A 320 SRM 51-21-11 APLICATION OF PROTECTIVE TREATMENT TO METAL PARTS

Customer : ENV 

Type : A320 

Rev. Date : Nov 01, 2016 

51-21-11 Application of Protective Treatment to Metal Parts 

Manual : SRM 

Selected effectivity : 


1. General 

A. The following sections detail the necessary treatments for metal repair parts. The required paint coatings 

are given in Chapter 51-23-11 . 

B. The Table Below shows the original protection and choice of alternative solutions for field repairs only. 

NOTE: This table does not cover major part replacement. 

NOTE: CAA protection is recommended, especially in areas subject to corrosion, nevertheless chemical 

conversion coating or wash primer is acceptable although the level of protection is degraded 

versus CAA. 

MATERIAL 

Aluminum 

ORIGINAL PROTEC- 

TION FOR DETACH- 

ABLE REPAIR PARTS 

 

REPAIR ALTERNAT- 

IVES 

General surface protection for corrosion prevention 

CAA unsealed + paint Chemical conversion 

 

coating + paint or wash 

Chemical conversion primer + paint 

coating + paint 

SAA unsealed + paint 

For surface protection of bonded repairs 

Hydrofluoric acid etching, 

Chemical conversion 

coating and Anti-corrosion 

Repair procedure 

calls for CAA Chapter 

51-21-11 2.A.(1) or 

TASK 51-77-13-911-013 , 

Para 2. B. (2) (a) 

bonding primer method 

Acid etching and anti-corrosion 

bonding primer 

method 

Phosphoric acid non tank 

anodizing (PANTA) and 

anti-corrosion bonding 

primer method 

PARAGRAPH 

2.A 


Para 2. A. (2). (c) 


Para 2. A. (2). (d) 


Para 2. A. (2). (e) 

Table 001 - Protective Treatments on Aluminum 

If the required treatments are not practicable, refer to the column 'Repair Alternative'. Use the 

abbreviation 'CAA' for Chromic Acid Anodizing and 'SAA' for Sulfuric Acid Anodizing. 

Anodic coating is considered to be the superior protection. 

The application of wash primer is preferred in those areas that would be difficult to clean after the 

application of chemical conversion coating. This would prevent a chemical product being trapped between 

parts and subsequently causing corrosion. 

MATERIAL 

STEEL 




 

Cadmium plating 

Cadmium plating + paint 


IVES 

Brush cadmium plating 

Brush cadmium plating 

plus paint (primer 

PARAGRAPH 

2.B 

Print Date: December 29, 2016 Page 1 of 29 

© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.







MATERIAL 




 

Phosphating + paint 

Zinc spraying 

Silver plating 

Chrome plating 


IVES 

or primer + top coat), or 

wash primer + primer + 

top coat if required. 

Phosphating or wash 

primer + paint 

Wash primer + paint 

None 

None 

PARAGRAPH 

Table 002 - Protective Treatments on Steel 

If the required treatments are not practicable, refer to the column 'Repair Alternative'. Use the 

abbreviation 'CAA' for Chromic Acid Anodizing and 'SAA' for Sulfuric Acid Anodizing. 

The repair alternatives in Table 002 are not allowed for bonded structure. 

MATERIAL 

Titanium 




Anodizing 

Cadmium plating 

Nickel plating 

APPLICATION IN SITU 

PARAGRAPH 

not applicable 2.C 

2. Procedure 

Table 003 - Protective Treatments on Titanium 

A. Aluminum 

WARNING: BE CAREFUL WHEN YOU USE CHEMICAL MATERIALS. OBEY THE MATERIAL MAN- 

UFACTURER INSTRUCTIONS AND THE LOCAL REGULATIONS. MAKE SURE THAT 

THERE IS A GOOD FLOW OF AIR THROUGH THE WORK AREA. DO NOT BREATHE 

THE FUMES. DO NOT SMOKE. DO NOT USE THESE MATERIALS NEAR A FLAME, 

SPARKS OR SOURCES OF HEAT. USE PROTECTIVE CLOTHING, GOGGLES AND 

GLOVES. IF YOU GET ONE OF THESE MATERIALS ON YOUR SKIN OR IN YOUR 

EYES, FLUSH IT AWAY WITH A FLOW OF CLEAN WATER. IF YOU GET ONE OF 

THESE MATERIALS IN YOUR MOUTH, GET IMMEDIATE MEDICAL AID. IN GENERAL, 

THESE MATERIALS ARE FLAMMABLE, POISONOUS AND SKIN IRRITATING. 

WARNING: PUT ON PROTECTIVE CLOTHING. ALL CHEMICAL COMPONENTS CAN CAUSE SKIN, 

EYE AND LUNG DAMAGE. 

(1). Chromic Acid Anodizing and Sulfuric Acid Anodizing (CAA, SAA, unsealed) 

(a) General 

1 CAA and SAA are galvanic procedures in which the surface of metal is given an oxide 

coating. The treatment increases the corrosion resistance of the material and gives a good 

surface for the adhesion of subsequent paint coatings. 

2 Make sure that subsequent paint coatings, if required, are applied within 16 hours after this 

treatment. 

(b) Safety Precautions 









WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERI- 

AL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS. 

WARNING: OBEY THE MANUFACTURER’S INSTRUCTIONS FOR THE MATERIALS WHICH 

YOU USE FOR THE CLEANING PROCEDURES BEFORE YOU START WITH THE 

CAA PROCESS. THESE CLEANING AGENTS ARE DANGEROUS. 

WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR EACH CHEMICAL WHICH YOU 

USE IN THIS PROCEDURE. THESE CHEMICALS ARE POISONOUS AND DANGER- 

OUS. 

(c) Procedure 

1 For details of the CAA process and the necessary equipment refer to the PMS Chapter 

01-02-08 . 

2 For details of the SAA process and the necessary equipment refer to the PMS Chapter 

01-02-09 . 

(2). Application of Chemical Conversion Coating 

CAUTION: 

MAKE SURE THAT YOU REMOVE ALL MASKING MATERIAL FROM THE REPAIR 

AREA WHEN THE WORK IS COMPLETED. IT IS VERY IMPORTANT TO MAKE 

SURE THAT THERE IS NO MASKING MATERIAL ON THE PITOT HEADS AND 

STATIC PORTS. 

(a) General 

1 The application of the product (Material No. 13-002 ), described in Paragraph 2.A.(2).(d) , is 

a non electrolytic process. It produces a protective coating and gives a good surface for the 

adhesion of the subsequent paint coatings. The product can be applied by brush, swab and 

immersion procedure. Brush application is suitable to field repairs. 

The use of ALODINE PEN 1132 (Material No. 13-005 ) is a non electrolytic process driedin-place 

coating. It can be used as an alternative to pretreatment for painting (Material No. 

13-002 ) for small touch up repairs not exceeding 20000 mm² (31 in²), refer to Paragraph 

2.A.(2).(e) . 

2 Before you start with this procedure, make sure that the surface shows bright metal. 




WARNING: OBEY THE MANUFACTURER’S INSTRUCTIONS WHEN YOU USE THE CLEANING 

AGENTS (MATERIAL NO. 11-003 AND 11-026). THESE CLEANING AGENTS ARE 

DANGEROUS. 

WARNING: OBEY THE MANUFACTURER INSTRUCTIONS WHEN YOU USE CHEMICAL CON- 

VERSION COATING (MATERIAL NO. 13-002). THIS PRODUCT IS POISONOUS. 

CAUTION: 

ENSURE THAT ALL MASKING MATERIALS ARE REMOVED FROM THE REPAIR 

AREA ON COMPLETION OF WORK, PAY SPECIAL ATTENTION TO PITOT HEADS 

AND STATIC PORTS. 

(c) Materials 









ITEM NOMENCLATURE QTY MATERIAL/REMARKS 

- Cleaning agent - Material No. 11-003 or 11-026 (Refer to 

CML) 

2 ALODINE 1200 or ALOCROME - Material No. 13-002 (Refer to CML) 

1200 

3 Concentrated nitric acid - 

4 Containers - Stainless steel or acid-resistant material 

5 Masking tape - 

6 Cotton cloth - 

7 Soft-bristle brushes - Fiber-bristled or nylon 

8 Hot-air dryer - 

9 SCOTCH-BRITE pads - 

- ALODINE 1000 or 1500 - Material No. 13-003 (Refer to CML) 

- ALODINE PEN 1132 - Material No. 13-005 (Refer to CML) 

- SCOTCH-BRITE pads Type A fine - Local purchase 

(d) Application of Chemical Conversion Coating by Brushing 

1 Preparation of Brush Solution 

NOTE: Use either Material No. 13-002 (CCC yellow) or 13-003 (CCC colorless) in accordance 

with the areas to be repaired. 

Use pretreatment for painting (Material No. 13-003 ) on: 

- unpainted parts 

- non-painted area around static ports 

- parts where electrical bonding is required 

- when required in specific repair procedure 

a 

Mix the powder (Material No. 13-002 or 13-003 )) with deionized water in a plastic or 

stainless steel container at room temperature. 

NOTE: Use the applicable proportions as follows: 

Material No. 13-002 (ALODINE 1200 or ALOCROME 1200) The proportion to 

mix is 22 to 30 g in 1 liter of demineralized water. Contact time is 3 to 5 minutes. 

Material No. 13-003 (ALODINE 1000 or 15000) The proportion to mix is: 

For ALODINE 1500 10 to 11 g in 1 liter of demineralized water. Contact time is 1 

to 3 minutes. 

For ALODINE 1000 3 to 3.8 g in 1 liter of demineralized water. Contact time is 2 

to 5 minutes. 

NOTE: Refer to Chapter 01-01-18 for the definition of demineralized water. 

b 

Allow the solution to stand for a minimum of 1 hour before use. 

NOTE: You can disregard small amounts of insoluble material which may appear. 

2 Preparation Prior to Application 

a 

Mask all surfaces so that no solution can pass into adjacent splices, seams or voids. 

NOTE: Surfaces which are painted, anodized or have been previously treated with the 

product (Material No. 13-002 or 13-003 ) need not to be masked. 

b 

Abrade the surface to be treated with SCOTCH-BRITE pads. 









c Clean the area with a clean cotton cloth soaked in cleaning agent (Material No. 11-003 

or 11-026 ). 

3 Application 

WARNING: MATERIALS SOAKED IN CHEMICAL CONVERSION SOLUTION (MATERI- 

AL NO. 13-002) CONSTITUTE A FIRE HAZARD. 

a 

Apply the solution onto the surface of the metal with a brush or lint-free cloth or by 

immersion procedure. Keep the surface moist by successive applications until a golden 

yellow film is obtained for Material No. 13-002 or an iridescent film is obtained for 

Material No. 13-003 . Darker powdery deposits will result in poor paint adhesion. 

CAUTION: 

CAUTION: 

DO NOT ALLOW THE APPLIED FILM TO BECOME DRY BEFORE IT IS 

RINSED WITH WATER. 

WHEN YOU RINSE AND DRY THE SOFT NEW COATING, EXERCISE CARE 

NOT TO DAMAGE THE FILM. 

b 

c 

d 

CAUTION: 

Rinse the area thoroughly with demineralized running clean water (minimum 2 minutes). 

Dry off the area with hot (maximum 60° C (140° F)), oil free low-pressure air. 

Apply the required paint coatings as soon as possible but within 16 hours (Refer to 

Chapter 51-23-11 ). 

WEAR PROTECTIVE EQUIPMENT AND OBEY MANUFACTURER’S INSTRUCTIONS. 

(e) Application of Chemical Conversion by Pen 

NOTE: The use of ALODINE PEN 1132 (Material No. 13-005 ) is a non-electrolytic process driedin-place 

coating. It can be used as an alternative to pretreatment for painting (Material 

No. 13-002 ) for small touch-up repairs not exceeding 20000 mm² (31 in²). 

1 Preparation prior to application 

a 

b 

Mask all the surfaces so that no solution can pass into adjacent splices, seams or voids. 

NOTE: Anodized areas or areas already treated with ALODINE PEN 1132 (Material No. 

13-005 ) need not to be masked. 

Abrade the surface to be treated with SCOTCH-BRITE pads. 

c Clean the area with a clean cotton cloth soaked in cleaning agent (Material No. 11-003 

or 11-026 ). 

d 

2 Application 

a 

b 

Dry the surface. 

Activation of the pen 

Remove the cap, hold the pen with the felt tip downwards. Press the tip of the pen 

against a cotton cloth. This will open the valve, allowing ALODINE 1132 to reach the 

application tip. A new unit should charge in 30 to 45 seconds. When the ALODINE wets 

the tip and the cotton cloth, release pressure. Unit is ready to use. The tip shall be not 

excessively wet prior to its use. 

Apply ALODINE 1132 to the part with firm, smooth, even and continues strokes. Overlap 

each stroke by 50% to ensure full coverage. 









NOTE: Do not allow the solution to puddle. If it is the case, it will burn the surface and 

adhesion loss can occur. 

Do not use too much solution. Just wet the surface and the solution should not 

run, if the surface is held vertical. 

It is recommended that the application start and stop just outside the bare aluminum 

area. 

Do not rinse. Do not wipe. 

No solution breaks must be observed, repeat Paragraph 2.A.(2).(e).1 if solution 

breaks. 

c 

d 

Let it dry for 5 minutes and apply a second coat in 90° direction as described in 

Paragraph 2.A.(2).(e).2.b . 

Let it dry for 1 hour at ambient temperature. 

NOTE: Light brown color is acceptable. Color shades, lines or overlap marks are acceptable. 

e 

Apply the required primer within 4 hours maximum. 

NOTE: Replace the cap after use. To recharge the pen, repeat the activation process. 

Store the pens head up to avoid leaks. 

(3). Application of Wash Primer (Material No. 16-020 ) 

(a) General 

1 The application of wash primer (Material No. 16-020 ) is a chemical pretreatment to increase 

the corrosion resistant properties of the metal and to give a good surface for the adhesion of 

further paint coatings. 

2 Wash primer (Material No. 16-020 ) is composed of a polyvinylbutyral basis and a hardener. 

The product must usually be thinned by a thinner to the appropriate viscosity for spray or 

brush application. 






DANGEROUS. 

WARNING: OBEY THE MANUFACTURER INSTRUCTIONS WHEN YOU PREPARE AND APPLY 

WASH PRIMER (MATERIAL NO. 16-020). DO NOT LET ANY MATERIAL COME IN 

CONTACT WITH THE SKIN, EYES OR MOUTH. DO NOT INHALE VAPORS. WORK 

IN WELL VENTILATED AREA. 

CAUTION: 

ENSURE THAT ALL MASKING MATERIALS ARE REMOVED FROM THE REPAIR 

AREA ON COMPLETION OF WORK, PAY SPECIAL ATTENTION TO PITOT HEADS 

AND STATIC PORTS. 

(c) Materials 










1 Cleaning agent - Material No. 11-003 or 11-026 (Refer to 

CML) 

2 Wash primer - Material No. 16-020 (Refer to CML) 

3 Application tool - According to manufacturer's instructions 

4 Masking tape and paper - 

5 Cotton cloth - 

B. Steel Alloys 

(d) Procedure 

1 Mask off the area, which is not to be treated, with masking tape and paper. 

2 Clean the area with a cotton cloth, soaked in cleaning agent (Material No. 11-003 or 

11-026 ). 

NOTE: Make sure that the area shows a bright metal surface. 

3 Mix the wash primer solution according to the material manufacturer's instructions. 

4 Apply wash primer (Material No. 16-020 ) according to the material manufacturer's 

instructions. 

(1). Cadmium Plating 

(a) General 

NOTE: After application subsequent paint coatings must be applied within a period of 

16 hours. For the determination of the required paint coatings refer to Chapter 

51-23-11 . 

1 Cadmium plating is a procedure in which the surface of the material is given a layer of 

cadmium. If corrosion occurs it will remove the thin layer first. This is referred to as sacrificial 

corrosion. 

2 There are two different procedures used to put the cadmium onto the surface of the material. 

The first method describes a cadmium plating procedure, in which the metal parts are put 

into several immersion baths. The second method describes the 'DALIC' Process, which is 

suitable for field repairs. 

3 Before you start the cadmium plating procedure, make sure that the parts are clean, show a 

bright metal surface and are free from corrosion (Refer to Chapter 51-74-00 ). 

4 It is recommended that cadmium plating is carried out by trained and approved personnel. 




WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR EACH MATERIAL WHICH YOU 

USE FOR CLEANING PROCEDURES BEFORE YOU START THE CADMIUM PLAT- 

ING. THESE CLEANING AGENTS ARE HARMFUL. 


USE IN THIS PROCEDURE. THESE CHEMICALS ARE POISONOUS AND HARM- 

FUL. 









(c) Cadmium Plating (Immersion Procedure) 

1 For details of this cadmium-plating procedure and the necessary equipment refer to PMS 

Chapter 01-02-02 . 

(d) Cadmium Plating ('DALIC' Process) for steel with a maximum tensile strength of 1100 N/mm ² 

(159 KSI). 

NOTE: Alternative procedures given in Paragraph 2.B.(1).(e) for steels and in Paragraph 2.B.(1). 

(f) for stainless steels. 

1 Materials and Equipment 

Contact AIRBUS to obtain the reference source for the 'DALIC' materials. 

NOTE: For the power supply you need a 'DALIC' rectifier. Dishes for the solutions must be 

made out of glass, polythene or porcelain material. For electrodes use 'DALIC' tampons 

which have to be prepared in accordance with the material manufacturer's instructions. 

2 Subsidiary Materials 


1 'DALIC' cleaning and deoxidizing - 

solution 

2 'DALIC' cadmium/zinc passivating 

- 

solution 

3 Trichloroethane - Material No. 11-026 (Refer to CML) 

4 Lint-free cloth - 

5 'DALIC' membrane - 


7 Brush or swab - 


9 'DALIC' cadmium alkaline solution 

- 

10 'DALIC' cadmium acid solution - For all materials refer to the 'DALIC' instruction 

manual 

11 'DALIC' nickel epais solution - 

12 'DALIC' etch/activator solution - 

Number 4 

13 'DALIC' etch/activator solution - 

Number 3 

14 Aluminum oxide powder or 

Scotch-brite pads 

- 

3 How to Obtain the Correct Thickness 

The thickness of the deposited metal is controlled by the ampere-hour meter. It further 

depends upon the area to be plated and the specific plating factor. The specific plating factor 

gives the number of ampere hours required to produce a deposit in mm or inches onto a 

surface area of square centimeters or square inches. 

SOLUTION 

FACTOR WHEN YOU FACTOR WHEN YOU 

MEASURE IN (mm or cm) MEASURE IN (in) 

Nickel epais solution 1.282 210 









SOLUTION 

FACTOR WHEN YOU 

MEASURE IN (mm or cm) 

FACTOR WHEN YOU 

MEASURE IN (in) 

Cadmium alkaline solution 0.488 80 

Cadmium acid solution 0.488 80 

Table 004 - Specific Plating Factor 

- Example: You have to plate an area of 25 cm² (3.875 in²) with cadmium alkaline solution. 

The required thickness is 0.015 mm. The correct ampere-hours setting is: 0.488 x 0.015 x 

25 = 0.183 ampere-hours 

- Example: You have to plate the same area with the same thickness, but you measure in 

inches. The thickness is 0.0006 in and the area has the size of 3.87 sq.in Determine the 

correct number of ampere-hours as follows: 80 x 0.0006 x 3.87 = 0.183 ampere-hours 

4 Inspection 

The cadmium deposit must be fine grain, smooth, and free from blisters, pitting, burns and 

other defects. Ensure that the cadmium deposit has good adherence to the metal surface. 

Check this with an adhesive tape. Put a strip of adhesive tape onto the treated surface and 

draw it quickly away. The adhesive tape must be free from cadmium particles. 

5 Procedure for non stainless steel 

a 

b 

Remove all grease from the repair area with a clean cloth soaked in trichloroethane 

(Material No. 11-026 ). 

When the cleaning agent has evaporated, mask off all areas which are not to be treated. 

WARNING: CLEANING AND DEOXIDIZING SOLUTION IS HARMFUL. 

c 

d 

With a prepared tampon apply the cleaning and deoxidizing solution (Item 1 in the 

Table of Subsidiary Materials). Do this at cathodic plating polarity (see manufacturer's 

instructions) and 10 to 12 volts. Move the tampon in contact and over the surface until 

you get a regular clean surface which is free from water breaks. This should take about 5 

to 10 seconds per square inch (6.5 cm² (1.007 in²)). 

Rinse the area with clean cold running water. 

WARNING: CADMIUM ALKALINE SOLUTION IS DANGEROUS. 

e 

With a prepared tampon apply the cadmium alkaline solution (Item 9 in the Table of 

Subsidiary Materials). Do this at cathodic plating polarity and 8 to 12 volts. Move the 

tampon in contact with and over the surface until you get the required thickness. You 

should move the tampon at a speed of approximately 10 to 38 cm (4 to 15 in) per 

second. 

NOTE: For unspecified thickness, the deposit must average between 0.015 mm (0.0006 

in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(d).3 . 

f 

g 


Abrade slightly the treated surface with a Scotch-brite pad or aluminum oxide and 

cotton wool. It will brighten the cadmium deposit before passivation and improve its 

appearance. 

WARNING: CADMIUM/ZINC PASSIVATING SOLUTION IS HARMFUL. 









h 

i 

Apply passivation solution (Item 2 in the Table of Subsidiary Materials) with a brush or 

swab to the plated surface. Allow the solution to remain in contact for 5 to 10 seconds 

until a yellow or gold appearance is obtained. 


CAUTION: 

THE PASSIVATED FILM IS RELATIVELY FRAGILE UNTIL DRY. AVOID 

TOUCHING IT BEFORE THE RELEVANT STEP IS COMPLETED. 

j 

Dry the repair area with a hot-air dryer at a maximum temperature of 50° C (122° F). 

NOTE: If step 2.B.(1).(d).5.j is impracticable, rinse with hot water to aid drying and 

gently dab the surface with soft clean tissues or clean cotton wool until the surface 

is dry. 

k Inspect the treated area as described in Paragraph 2.B.(1).(d).4 . 

NOTE: Make sure that the required paint coatings are applied within 16 hours. 

6 Procedure for Stainless Steel 

a Do the steps 2.B.(1).(d).5.a to 2.B.(1).(d).5.d . 

WARNING: ETCH/ACTIVATOR SOLUTION NUMBER 4 IS HARMFUL. 

b 

c 

With a prepared tampon apply the etching solution (Item 12 in the Table of Subsidiary 

Materials). Do this at a reversed polarity (anodically, see manufacturer's instructions) 

and 10 to 14 volts. Move the tampon in contact with and over the complete surface 

concerned. Continue until an evenly etched and smutted appearance is obtained. 



d 

e 


Materials). Do this at a reversed polarity (anodically, see manufacturer's instructions) 

and 10 to 12 volts. Move the tampon in contact with and over the complete surface 

concerned until the surface will not lighten further. 



f 


Materials). Do this at cathodically polarity (see manufacturer's instructions) and 10 to 12 

volts. Move the tampon in contact with and over the complete surface concerned for 2 to 

3 seconds per square inch (6.5 cm² (1.007 in²)). 

WARNING: NICKEL EPAIS SOLUTION IS DANGEROUS. 

g 

Move the tampon with nickel epais solution (Item 11 in the Table of Subsidiary Materials) 

over the moistened area at cathodically plating polarity (see manufacturer's instructions) 

and 6 to 10 volts, until 0.0025 mm (0.0001 in) has been deposited, refer to Paragraph 

2.B.(1).(d).3 . 









NOTE: Move the tampon at about 10 to 25 cm (4 to 10 in) per second. 

h 


WARNING: CADMIUM ACID SOLUTION IS DANGEROUS. 

i 

With a prepared tampon apply the cadmium acid solution (Item 10 in the Table of the 

Subsidiary Materials). Do this at the plating polarity (see manufacturer's instruction) and 

8 to 10 volts. Move the tampon in contact with and over the surface until you get the 

required thickness. You should move the tampon at a speed of approximately 15 to 61 

cm (6 to 24 in) per second. 

NOTE: For unspecified thickness, the deposit must average between 0.015 mm (0.0006 

in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(d).3 . 

j Do steps 2.B.(1).(d).5.f thru 2.B.(1).(d).5.k . 

(e) Cadmium brush plating (or pad cadmium plating DALIC process) for steels (excluding stainless 

steels) with a maximum tensile strength of 1420 N/mm² (205 KSI). 

NOTE: This process is to be used to repair damaged protective treatment film not exceeding 700 

mm² (1.085 in²). The process is not allowed on any steel with carburized areas 

For larger surface perform multiple repairs. 

This process must be carried out by trained and approved personnel. An operator training 

service is available from the solution suppliers. 

1 Equipment 

- Power supply: Variable rectifier 30 volt 20 amp minimum fitted with voltmeter, ammeter, 

ampere hour meter, reversing switch and on/off switch. 

- Dishes for solutions glass polyethylene or porcelain flat bottom dishes of convenient size. 

- Electrodes: Use DALIC or DALIC UK or SIFCO tampons which have to be prepared in 

accordance with the material manufacturer's instructions. For optimum deposit speed area 

and shape of the anode must be determined by the area and the shape of the part to be 

plated the size should be s/6 < S < s/3 for SIFCO solution and s/8 < S < s/5 for DALIC 

solution where "s" is the area to be treated and "S" the area of the anode. 

- Hot air dryer (oil free). 

2 Repair Materials 


1 Cleaning Agent AR Material No. 11-003 or 11-026 (Refer to 

CML) 

2 Lint free cloth, cotton wool AR Local Purchase 

3 Abrasive Paper - Silicon Carbide 

(grade 120) 

4 Abrasive Paper - Aluminum Oxide 

AR Local Purchase 

(grade 320 - water resistant) 

or finer or red SCOTCH-BRITE 

pads 

5 Masking tape AR PVC insulating tape or 3M No. 470 or aluminum 

tape Material No. 08-052 (Refer to 

CML) 

6 Brush or Swab AR Local Purchase 

Print Date: December 29, 2016 Page 11 of 29 









7 De-mineralized Water AR 

8 Aluminium Oxide Powder (80 microns) 

AR DALIC Reference CC115 

9 Brush Plating Tools (use graphite 

anode) and Bonnets 

AR Separate anodes, bonnets and solution 

must be used at each stage of the 

process .Do not use steel tools containing 

more than 5% of chromium 

10 DALIC Cadmium plating Solution AR 

2023 

 

11 Chromic finish solution AR 

 

12 SIFCO Cadmium LHE 

 

13 SIFCO Passivating Solution 

 

Code 11028 from DALIC Code DPS6123 

from DALIC UK 

Passivateur No. 2 Code 10033 from DAL- 

IC Cadmium/Zinc Passivating Code DFS 

8010 from DALIC UK 

Code SPS 5070 from SIFCO 

Code SSS 3002 from SIFCO 

Storage conditions: Keep away from humidity and light at a temperature between 5° C 

to 30° C. Recommended shelf life is three years in original container except dalic solution 

2023 one year. 

DALIC 41, Rue des Eaux, B.P. 90139 35501 VITRE - France Tel: (33) 

2.99.75.53.80 Fax: (33) 2.99.74.49.31 service@dalicworld.com 

DALIC UK Ltd South Lodge House, 68-70 Frogge Street Ickleton 

(South Cambridge Shire) CB 10-1 SH - UK Tel: 0 1799 532 002 Fax: 0 

1799 532 003 info.dalicuk@tiscali.co.uk 

Storage conditions: 21° C to 43° C RH 30 to 90, keep away from humidity and light 

at a temperature between 5° C to 30° C. Recommended shelf life is three years in original 

container and one year for SIFO5070. 

SIFCO applied surface concepts 16, rue de la Noue Guimante 

Lots 22/23 PA de la Courtilliere 77400 Saint-Thibault des Vignes 

www.electrolyseautampon.com 

3 How to obtain the correct thickness 



gives the number of ampere hours required to produce a deposit in mm or inches onto a 


SOLUTION 

FACTOR FOR 

MEASUREMENT 

IN (mm) 


MEASUREMENT 

IN (in) 

DALIC Code 2023 0.4 70 

SIFCO SPS 5070 0.4 70 


Example 1: 

You have to plate an area of 25 cm² (3.875 in²) with SPS 5070 cadmium LHE plating 

solution. The required thickness is 0.015 mm. The correct ampere hours setting is: 0.4 x 

0.015 x 25 = 0.15 ampere hours. 

Example 2: 









You have to plate the same area with the same thickness but you measure in inches. The 

thickness is 0.0006 in and the area has the size of 3.87 sq.inch. Determine the correct 

number of ampere hours as follows: 70 X 0.0006 X 3.87 = 0.162 ampere-hours. 

4 Inspection 

The cadmium deposit must be fine grain, smooth and free from blisters, pitting, burns and 



draw it quickly away. The adhesive tape must be free from cadmium particles. For more 

information refer to PMS Chapter 01-02-21 . 

5 Procedure 

a 

b 

c 

d 

Remove all grease from the repair area (minimum one inch outside the repair area) with 

a clean cloth soaked in cleaning agent (Material No. 11-003 or 11-026 ) and wipe dry 

with a clean cloth or absorbent paper. 

Mask as necessary to define the area to be plated. If the area was already plated with 

cadmium, the brush plating must overlap the existing cadmium by about 4 mm (0.157 

in), refer to Figure 001 . 

Brush Plating Procedure 

Use one of the alternative procedures given in Paragraph 2.B.(1).(e).5.d and 2.B.(1). 

(e).5.e . 

Using SIFCO solutions 

NOTE: Prepare the work place with all the items. Start the power pack, adjust the 

voltage to 20 V and the current to the maximum and ensure the power pack is 

set in 'forward' polarity. Set the bonnet on the plating tool. Wet it first with demineralised 

water, squeeze with hand and paper, then place the electrode in the 

cadmium solution. 

- Manually abrade the area to be plated using a water wetted abrasive paper (320 

grade or finer) or fine SCOTCH-BRITE pad and water. Feather the edge as shown on 

Figure 001 . 

- Rinse with demineralized water. Wipe with a clean wet cloth and wipe dry with a clean 

cloth. 

- Before switching on the current, wipe the area to be treated with a pad dampened 

with the plating solution (Item 12) or soak a tampon with the plating solution and start 

the appropriate tampon movement over the plating area. Ensure you have a liquid 

break free condition otherwise repeat 2.B.(1).(e).5.d Paragraph 2. 

- Using a prepared tampon move the tampon and apply plating solution at forward 

current cathodic plating polarity (part connected to (-) terminal and electrode (+) see 

manufacturer's instructions), plate at 15 to 20 V until a visible layer of cadmium is 

deposited, then reduce voltage to 8 to 14 V. Move the tampon in contact and over the 

surface and until you get the required thickness (see the required ampere hours in 

Paragraph 2.B.(1).(e).4 at a speed of approximately 6 to 24 m/min or 20 to 80 feet per 

minute. During plating do not allow the surface to dry and move the tampon to avoid 

the deposit to darken (burning). 

NOTE: For unspecified thickness the deposit must average between 0.015 mm (0.0006 

in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(e).4 . 

- Rinse the area with clean cold running water. 

- Apply passivating solution (Item 13) with a brush or swab to the plated surface. 

Allow the solution to remain in contact for 15 to 30 seconds until a yellow or gold 

appearance is obtained. 










- Dry the repair area with an air blast or with a hot air dryer at a maximum temperature 

of 50° C (122° F) or gently dab the surface with soft clean tissues, absorbent paper or 

clean cotton wool. 

- Inspect the treated areas as described in Paragraph 2.B.(1).(e).4 . 


NOTE: Do not return used solutions in original containers. The solutions, rinsing water 

and used bonnets must be processed or destroyed by an approved organization. 

Contaminated packaging if not re-used with the same product is also special 

waste to be sent to an approved organization for recycling or disposal. 

e DALIC Solution 2023 

NOTE: Prepare the work place with all the items. Start the power pack, adjust the 

voltage to 20 V and the current to the maximum and ensure the power pack is 

set in 'forward' polarity. Set the cover material on the plating tool. Wet it first with 

demineralised water, squeeze with hand and paper, then place the electrode in 

the cadmium solution. 

- Lightly dry abrade the area to be treated using 120 grade abrasive paper (around 3 

perpendicular cross pattern) 

- Re-apply aluminium or PVC masking tape. 

- Hand abrade area to be cadmium plated using 120 grade paper and water. 

- Clean with clean cloth dampened with demineralized water. 

- Lightly manually abrade the area using aluminium oxide powder, water and cotton 

wool. 

- Rinse with de-mineralized water. 

- Clean with clean cotton wool or clean cloth dampened with demineralized water, 

ensure that there is no longer black residues on the cloth. 

- Rinse with demineralized water. 

NOTE: Do not swab DALIC cadmium solution on the area to be plated. 

- Connect the piece to (-) terminal and the electrode to (+) terminal (red plug, +) to the 

power supply pack. 

- Plate at 20 V until 12 to 15% of the total current quantity calculated is reached. 

- Repeat 2.B.(1).(e).5.e Paragraph 3 thru Paragraph 8 to remove the first cadmium 

layer. 

- Set to 0 the current quantity meter. 

- Plate again at 20 V until 12 to 15% of the total current quantity calculated is reached 

then reduce to 11 V until the required current quantity is reached. 

NOTE: Ensure fast electrode movement to prevent 'burning' of the deposit (use a speed 

of around 25 m/min (80 feet / min). Put the electrode on the tape and start to 

move the electrode over the surface, sweep the surface very quickly. 

For unspecified thickness the deposit must average between 0.015 mm (0.0006 

in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(e).4 . 

- Rinse with clean cold running water. 

- Remove the masking. 

- Rinse with water. 

- Dry with hot air dryer. 

- Clean with cleaning agent (Material No. 11-026 ). 









- Apply passivating solution (Item 11) with a brush or swab to the plated surface. Allow 

the solution to remain in until a yellow or gold appearance is obtained. 



of 50° C (122° F) or gently dab the surface with soft clean tissues, absorbent paper or 

clean cotton wool. 

- Inspect the treated areas as described in 2.B.(1).(e).5.e Paragraph 4. 



and used bonnets must be processed or destroyed by an approved organization. 

Contaminated packaging if not re-used with the same product is also special 

waste to be sent to an approved organization for recycling or disposal. 

(f) 

Cadmium brush plating (or pad cadmium plating DALIC process) for stainless steels with 

maximum tensile strength of 1100 N/mm² (159 KSI). 

NOTE: This process must be carried out by trained and approved personnel. An operator training 


1 Equipment 

- Power supply: variable rectifier minimum fitted with voltmeter, ammeter, ampere-hour 

meter, reversing switch and on/off switch. 

- Dishes for solutions glass polyethylene or porcelain flat bottom dishes of convenient size. 

- Electrodes: Use DALIC, DALIC UK or SIFCO tampons which have to be prepared in 

accordance with the material manufacturer's instructions. For optimum deposit speed area 


plated. The size should be s/6 < S < s/3 where "s" is the area to be treated and "S" the 

area of the anode. 

- Hot air dryer (oil free). 

2 Repair Materials 



CML) 


3 Abrasive Paper - Silicon Carbide 

(grade 120) 




or finer or red SCOTCH-BRITE 

pads 

5 Masking Tape AR PVC insulating tape or 3M No. 470 or aluminum 


CML) 







AR 

Separate anodes, bonnets and solution 














2023 

 


 

12 ATTAQUE No. 3 

 


 

14 NICKELAGE EP 

 


 


 

17 SIFCO Electrolytic Degreasing 

Solution 

 

18 Nickel Plating Solution 

 

19 ACTIVATOR No. 4 

 

20 ACTIVATOR No. 1 

 

AR 

AR 

AR 

AR 


from DALIC UK 




Code 10005 from DALIC or DCN ETCH- 

ING Code DPR 5075 from DALIC UK 

Code 10004 from DALIC or ACTIVAT- 

OR/ETCH No. 3 Code DPR5003 from 

DALIC UK 

Code 11028 FROM DALIC or Nickel 

EPAIS Code DPS6340 from DALIC UK 



Code SCM 4100 from SIFCO 





to 30° C. Recommended shelf life is three years in original container. 








container. 

SIFCO applied surface concepts 16, rue de la Noue Guimante Lots 

22/23 PA de la Courtilliere 77400 Saint-Thibault des Vignes http:// 





gives the number of ampere-hours required to produce a deposit in mm or inches onto a 


SOLUTION 

FACTOR FOR MEASURE- 

MENT 

IN (mm) 

DALIC Code 2023 0.4 70 


MENT 

IN (in) 









SOLUTION 


MENT 

IN (mm) 

SIFCO SPS 5070 0.4 70 

NICKEL EP/EPAIS 1.78 290 

Nickel SPS 5600 1.5 250 


MENT 

IN (in) 

Table 006 

Example 1: 


solution. The required thickness is 0.015 mm, the correct ampere hours setting is: 0.4 x 

0.015 x 25 = 0.15 ampere-hours. 

Example 2: 

You have to plate the same area with the same thickness, but you measure in inches. The 


number of ampere hours as follows: 70 x 0.0006 x 3.87 = 0.162 ampere-hours. 

4 Inspection 




draw it quickly away. The adhesive tape must be free from cadmium particles. Refer to PMS 

Chapter 01-02-21 for more information. 

5 Procedure 

a 

b 

c 








Use one of the alternative procedures given in Paragraph 2.B.(1).(f).5.d and 2.B.(1). 

(f).5.e . 

d SIFCO Solution SPS 5070 

NOTE: Prepare the work place with all the tools and solutions. 

Use a different and identified tool for each solution. 

First wet with demineralised water the bonnets set on the plating tools then 

squeeze with hand and paper and let soak with solution for a minimum of 2 

minutes. 

The treatment must be achieved in totality without interruption. 

- Manually abrade the area to be plated using a water wetted abrasive paper (320 

grade or finer) or fine SCOTCH-BRITE pad and water or aluminum oxide powder on a 

water moistened swab. Feather the edge as shown on Figure 001 . 


- Electrolytically clean with deoxidizing solution (Item 27) at 10 to 20 volts forward 

current. 

- Rinse with demineralized water ensuring a water break free surface. 

- Anodically etch with solution ACTIVATOR No. 4 SCM 4250 (Item 19) at 8 to 15 volts 

reverse current. 










- Cathodically etch with solution ACTIVATOR No. 1 SCM 4200 (Item 20) at 8 to 15 

volts forward current. 

- Do not allow to dry. Plate without delay a layer of nickel using plating solution (Item 

18) at 6 to 10 volts for the ampere minutes required to obtain 5 microns (2 to 7 

microns). 


- Do not allow to dry. Before switching on the current, wipe the area to be treated with 

a pad dampened with the plating solution (Item 15) or soak a tampon with the plating 

solution and start the appropriate tampon movement over the plating area. 


current or cathodic plating polarity ( part (-) and tool (+)) see manufacturer's 

instructions (Item 15). Plate at 8 V and move the tampon in contact and over 

the surface and until you get the required thickness (for required ampere-hours 

refer to Paragraph 2.B.(1).(f).5.e . During plating move the tampon at a speed of 

approximately 6-24 m/min or 20-80 feet per minute. During plating do not allow the 

surface to dry and move the tampon to avoid the deposit to darken (burning). 


in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(f).3 ). 

- Rinse the area with cold running water. 

- If required for appearance abrade slightly the treated surface with a SCOTCH-BRITE 

pad or aluminum oxide and cotton wool. It will brighten the cadmium deposit before 

passivation. 

- Apply passivating solution (Item 16) with a brush or swab to the plated surface. Allow 

the solution to remain in contact until a yellow or gold appearance is obtained. 



of 50° C (122° F) or gently dab the surface with soft clean tissues or absorbent paper 

or clean cotton wool. 

- Inspect the treated area as described in Paragraph 2.B.(1).(e).5.d . 



and used bonnets must be processed within the firm or destroyed by an 

approved organization. Contaminated packaging if not re-used with the same 

product is also special waste to be sent to an approved organization for recycling 

or disposal 






minutes. 


- Manually abrade the area to be plated using a water wetted abrasive paper (220 

grade), feather the edges as shown on Figure 001 . Clean with demineralized water 

and several cloths or papers without drying the surface. 

- Manually abrade the area using a water wetted red abrasive sponge, clean with 

demineralized water and several cloths or papers without drying the surface. 









(2). Phosphating 

(a) General 

- Manually abrade the area using alumina powder and a wetted cotton wool piece, 

clean carefully with demineralized water and several cloths or papers without drying 

the surface. The surface in final must be free from residues. 

NOTE: Before switching on the current, wipe the area to be treated with a tampon 

soaked with the indicated solution (Item 12) and start the appropriate tampon 

movement over the plating area. 

- Etch with ATTAQUE No. 3 Solution at 11 V, reverse polarity (part (+) and tool (-)), 

apply 0.25 Ah/dm² of area to be treated. 


- Etch for cleaning with ATTAQUE No. 2 solution (Item 13) at 11 V, reverse polarity 

(part (+) and tool (-)), apply 0.25 Ah/dm² of area to be treated. 


- Plate a nickel under layer with the NICKELAGE EP Solution (Item 14) at 6 to 10V, 

cathodic plating polarity or forward current (part (-) and tool (+)), for the ampere 

minutes required to obtain 5 microns (2 to 7 microns). 


- Plate around 3 µm cadmium with CADMIUM 2023 solution (Item 10) at 6 V, cathodic 

plating polarity or forward current (part (-) and tool (+)) then increase to 8 V to achieve 

the required thickness (see the required ampere-hours in Paragraph 2.B.(1).(f).5.e . 

During plating move the tampon at a speed of approximately 6 to 24 m/min or 20 to 

80 feet/minute. During plating do not allow the surface to dry and move the tampon to 

avoid the deposit to darken (burning). 


in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(f).5.e . 


- Apply passivating solution (Item 11) with a piece of cotton wool. Do soft and regular 

movements on the plated surface for 15 to 30 seconds until a yellow or gold colour is 

obtained. 



of 50° C (122° F). 

- Inspect the repair as described in Paragraph 2.B.(1).(e).5.d . 


NOTE: Do not return used solutions in original containers. These solutions, rinsing water 

and used bonnets must be disposed by an approved organization. Contaminated 

packaging if not re-used with the same product is also special waste to be 

sent to an approved organization for recycling or disposal. 

1 The phosphorisation is a procedure in which the surface of the metal is given a layer of 

phosphoric acid solution. You do this with a brush when the parts are installed or you can put 

them into a phospheric bath. 

2 This protective treatment is necessary after the removal of corrosion or when a repair 

procedure breaks the original surface protection. All corrosion and the paint coatings must 

be removed until a clean metallic surface is obtained, before you start with phosphating. 

Before brush phosphating, the corrosion can be removed mechanically. When the parts are 









phosphated in a bath and strongly oxidized, the corrosion must be removed by abrasive 

blasting (Refer to Chapter 51-74-00 ). 

3 For the required paint coatings after this treatment refer to Chapter 51-23-11 . 






DANGEROUS. 

WARNING: OBEY THE MANUFACTURER INSTRUCTIONS WHEN YOU USE THE PHOSPHORIC 

SOLUTION (MATERIAL NO. 05-041 OR 05-042). THESE PHOSPHORIC SOLUTIONS 

ARE DANGEROUS. 

(c) Brush Phosphating of Steel Parts in Installed Position 

1 Materials 


1 Phosphoric solution - Material No. 05-042 (Refer to CML) 

2 Cleaning agent - Material No. 11-003 or 11-026 (Refer to 

CML) 

3 Cheese cloth - 

4 Brush - 



2 Procedure 

a 

Clean and remove grease from the repair area with a clean cloth, soaked in cleaning 

agent (Material No. 11-003 or 11-026 ). 

b Mask all adjacent surfaces on which the phosphoric solution (Material-Number 05-042 ) 

can possibly cause damage. 

WARNING: PHOSPHORIC SOLUTION (MATERIAL NO. 05-042) IS DANGEROUS. 

c 

Apply a large quantity of phosphoric solution (Material No. 05-042 ) with a brush or a 

clean cloth. Permit the solution to penetrate for 10 minutes. 

d 

e 

NOTE: The surface must, when treated correctly, show a grey-white color. Do the phosphating 

procedure again if necessary. 

Clean the surface with a clean cloth, soaked in water. 

Dry the area with hot air. 

f Apply the required paint coatings (Refer to Chapter 51-23-11 ). 

(d) Phosphating of Steel Parts by Immersion in a Phosphoric Bath 

1 For details of this treatment and the necessary equipment refer to PMS Chapter 01-01-10 . 

(3). Hard Chromium Plating 

(a) General 









1 Hard chromium plating is a procedure in which the surface of the material is given a 

chromium layer. 

2 Hard chromium plating is required when: 

- the original chromium layer becomes thinner by friction than is permitted, 

- or the material under the chromium layer is corroded. 




WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR THE MATERIALS WHICH YOU 

USE FOR CLEANING PROCEDURES BEFORE HARD CHROMIUM PLATING. 


USE IN THIS PROCEDURE. 

(c) Procedure 

For details of hard chromium plating and the necessary equipment refer to PMS Chapter 

01-02-11 . 

(4). Silver Plating 

(a) General 

1 Silver Plating is a procedure in which the surface of the material is given a layer of silver. You 

do this with the silver electrolytic process. Silver plating is used for its electrical conductive 

properties and its resistance to fretting corrosion under hot conditions. 





USE FOR CLEANING PROCEDURES BEFORE SILVER PLATING. THESE MATERI- 

ALS ARE DANGEROUS. 


USE IN THIS PROCEDURE. SOME OF THESE MATERIALS CONTAIN IRRITANTS. 

(c) Procedure 

For details of silver plating and the necessary equipment refer to PMS Chapter 01-02-01 . 

(5). Zinc Spraying 

(a) General 

1 Zinc spraying is a procedure in which the surface of the metal is given a zinc layer. This 

can be necessary when the steel repair parts touch aluminum components and galvanic 

corrosion can occur. 

2 The zinc layer is a type of sacrificial protection. The corrosion effects initially damage the zinc 

layer and not the material below the protective layer. 




Print Date: December 29, 2016 Page 21 of 29 









USE FOR CLEANING PROCEDURES BEFORE ZINC SPRAYING. THESE MATERI- 

ALS ARE DANGEROUS. 

WARNING: OBEY THE MANUFACTURER INSTRUCTIONS WHEN YOU SPRAY ZINC WITH A 

SPRAY GUN. THE METALLIC DUST IN THE AIR IS HIGHLY EXPLOSIVE. MAKE 

SURE THAT YOU DO THE SPRAYING PROCEDURE IN A GOOD VENTILATED 

AREA. USE PROTECTIVE CLOTHES FOR ALL PARTS OF YOUR BODY AND DO 

NOT INHALE THE METALLIC DUST. 

WARNING: OBEY THE MANUFACTURER INSTRUCTIONS WHEN YOU USE PROPANE OR 

ACETYLENE GAS. BOTH GASES ARE HIGHLY FLAMMABLE. 

(c) Procedure 

For details of zinc spraying and the necessary equipment refer to PMS Chapter 01-02-24 . 

(6). Vacuum Cadmium Plating 

C. Titanium 

(a) General 

1 Vacuum cadmium plating is a procedure in which the surface of the metal is given a layer 

of cadmium. This layer of cadmium is a type of sacrificial protection. The corrosion effects 

initially damage the cadmium and not the metal under the protective layer. 

2 This procedure is specially used for high-tensile steels with a tensile strength more than 1450 

N/mm ² (210 KSI). Other procedures of cadmium plating are not permitted for high-tensile 

steel because of the embrittlement of the material. 




WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR THE MATERIAL WHICH YOU 

USE FOR THE CLEANING PROCEDURES BEFORE VACUUM CADMIUM PLATING. 

THESE CLEANING AGENTS ARE DANGEROUS. 


USE IN THIS PROCEDURE. THESE CHEMICALS ARE POISONOUS AND DANGER- 

OUS. 

(c) Procedure 

For details of vacuum cadmium plating and the necessary equipment refer to PMS Chapter 

01-02-38 . 

(1). Anodizing 

(a) General 

1 Anodizing of titanium is a procedure in which the surface of the material is given a very 

thin anodic coating. This protective treatment decreases galvanic corrosion when it is 

used without further protections. This coating gives a good surface for the adhesion of dry 

lubricants. 

2 This protective treatment is necessary when titanium touches other metals and galvanic 

effects have to be prevented. 

3 Make sure that the required paint coatings are supplied within 16 hours after this treatment. 












WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR THE MATERIAL WHICH YOU 

USE FOR THE CLEANING PROCEDURE BEFORE ANODIZING. THESE CLEANING 

AGENTS ARE DANGEROUS. 


USE IN THIS PROCEDURE. THESE CHEMICALS ARE DANGEROUS. 

(c) Procedure 

For details of anodizing titanium and the necessary equipment refer to PMS Chapter 01-02-10 . 

D. Copper Alloys 

(1). Cadmium Plating 

(a) General 

1 There are two different procedures used to put cadmium onto the surface of the material. 

The first method describe a cadmium plating procedure, in which the metal parts are put into 

several immersion baths. The second method describes the portable plating DALIC process, 

which is suitable for field repairs. 

2 Before you start the cadmium plating procedure, make sure that the parts are clean, show a 

bright metal surface and are free from corrosion, refer to Chapter 51-74-00 . 

3 It is recommended that cadmium plating is carried out by trained and approved personnel. 

(b) Safety precautions 



WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR EACH MATERIAL WHICH YOU 

USE FOR CLEANING PROCEDURES BEFORE YOU START THE CADMIUM PLAT- 

ING. THESE CLEANING AGENTS ARE HARMFUL. 


USE IN THIS PROCEDURE. THESE CHEMICALS ARE POISONOUS AND HARM- 

FUL. 

(c) Cadmium plating immersion procedure in accordance with AMS-QQ-P-416 Type II. 

NOTE: Use class 2 thickness unless otherwise noted in repair instructions/drawing. 

(d) Cadmium brush plating (or pad cadmium plating DALIC process) for copper alloys 

NOTE: This process must be carried out by trained and approved personnel, an operator training 


1 Equipment 

Power supply: variable rectifier minimum fitted with voltmeter, ammeter, ampere-hour meter, 

reversing switch and on/off switch. 

Dishes for solutions glass polyethylene or porcelain flat bottom dishes of convenient size. 









Electrodes: Use DALIC or DALIC UK or SIFCO tampons which have to be prepared in 

accordance with the material manufacturer's instructions, for optimum deposit speed area 


plated the size should be s/6 < S < s/3 where "s" is the area to be treated and "S" the area of 

the anode. 

Hot air dryer (oil free) 

2 Materials 



CML) 





or finer 

4 Masking tape AR PVC insulating tape or 3M No. 470 or aluminum 


CML) 



7 SCOTCH-BRITE pads - red AR Local Purchase 





AR 


2023 

 


 

12 Cleaning de-oxidizing solution 

 


 


 


 

16 SIFCO Electrolytic Degreasing 

Solution 

 

17 Etching dismutting solution 

 

AR 

AR 

Separate anodes, bonnets and solution 





from DALIC UK 




DECA Z from DALIC Code 10007 

Code 10004 from DALIC or ACTIVAT- 

OR/ETCH No. 3 Code DPR5003 from 

DALIC UK 




SCM 4350 from SIFCO 


to 30° C. Recommended shelf life is three years in original container. 
















container. 

SIFCO applied surface concepts 16, rue de la Noue Guimante Lots 

22/23 PA de la Courtilliere 77400 Saint-Thibault des Vignes http:// 





gives the number of ampere-hours required to produce a deposit in mm or inches onto a 


SOLUTION 


MEASUREMENT 

IN (mm) 


MEASUREMENT 

IN (in) 

DALIC Code 2023 0.4 70 

SIFCO SPS 5070 0.4 70 


Example 1: 


solution. The required thickness is 0.015 mm, the correct ampere hours setting is: 0.4 x 

0.015 x 25 = 0.15 ampere-hours. 

Example 2: 

You have to plate the same area with the same thickness, but you measure in inches. The 


number of ampere hours as follows: 70 x 0.0006 x 3.87 = 0.162 ampere-hours. 

4 Inspection 




draw it quickly away. The adhesive tape must be free from cadmium particles. Refer to PMS 

Chapter 01-02-21 for more information. 

5 Procedure 

a 

b 

c 








Use one of the alternative procedures given in Paragraph 2.D.(1).(d).5.d and 2.D.(1). 

(d).5.e . 

d SIFCO Solution SPS 5070 













minutes. 



grade) or aluminum oxide powder on a water moistened swab. Feather the edge as 

shown on Figure 001 . 


- Electrolytically clean with deoxidizing solution (Item 16) at 10 to 15 volts forward 

current. 

- Rinse with de-mineralized water ensuring a water break free surface. 

- Before switching on the current, wipe the area to be treated with a pad dampened 

with the etching solution (Item 17) or soak a tampon with the plating solution and start 

the appropriate tampon movement over the plating area. 

- Anodically etch with solution SCM 4350 at 10 to 15 volts reverse current. 

- Rinse with cold clean running water. 

- Do not allow to dry. Before switching on the current, wipe the area to be treated with 

a pad dampened with the plating solution (Item 14) or soak a tampon with the plating 

solution and start the appropriate tampon movement over the plating area. 


current or cathodic plating polarity (part (-) and tool (+)) see manufacturer's 

instructions (Item 14). Plate at 6 to 20 V and move the tampon in contact and over 

the surface and until you get the required thickness (for required ampere-hours 

refer to Paragraph 2.B.(1).(f).5.e . During plating move the tampon at a speed of 

approximately 6 to 24 m/min or 20 to 80 feet per minute. During plating do not allow 

the surface to dry and move the tampon to avoid the deposit to darken (burning). 


in) and a minimum of 0.01 mm (0.0004 in), refer to Paragraph 2.B.(1).(f).5.e . 


- Apply passivating solution (Item 15) with a brush or swab to the plated surface. Allow 

the solution to remain in contact until a yellow or gold appearance is obtained. 



of 50° C (122° F) or gently dab the surface with soft clean tissues or absorbent paper 

or clean cotton wool. 







or disposal. 






minutes. 











grade) or aluminum oxide powder on a water moistened swab. Feather the edge as 

shown on Figure 001 . 

- Clean with de-mineralized water and several cloths or papers without drying the 

surface. 

- Cathodically clean with cleaning/deoxidizing solution DECA Z solution (Item 12) at 12 

to 15 volts forward current. 

- Rinse with cold clean running water ensuring a water break free surface. 

- Anodically etch with etch ACTIVATOR solution No. 3 (Item 13) at 12 to 15 volts, 

reverse polarity (part (+) and tool (-)). 

- Rinse with cold clean running water. 

- Swab cadmium 2023 plating solution and apply to the surface area to be treated. 

- Saturate tampon with cadmium 2023 solution and apply to the surface area to be 

treated. 

- Cadmium plate with the cadmium solution (Item 10) at 8 to 10 V, cathodic plating 

polarity or forward current (part (-) and tool (+)) to achieve the required thickness (for 

required ampere-hours refer to Paragraph 2.B.(1).(f).5.e . During plating move the 

tampon at a speed of approximately 6 to 24 m/min or 20 to 80 feet/minute. During 

plating do not allow the surface to dry and move the tampon to avoid the deposit to 

darken (burning). 


in) and a minimum of 0.01 mm (0.0004 in) refer Paragraph 2.B.(1).(f).5.e . 


- Apply passivating solution (Item 11) with a piece of cotton wool. Do soft and regular 

movements on the plated surface for 15 to 30 seconds until a yellow or gold 

appearance is obtained. 



of 50° C (122° F). 







or disposal. 









DAMAGED AREA 

PLATING DAMAGED IN THIS AREA 

NS6 51 21 11 0 AAM0 00 0 

BLENDING AREA 

AT LEAST 4mm (0.157in.) 

TRANSITION AREA 

Figure 001 (sheet 1) / 51-21-11 Typical surface preparation 









End of document

A 320 SRM 51-21-11 APLICATION OF PROTECTIVE TREATMENT TO METAL PARTS

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