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

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Customer : ENV Type : A320 Rev. Date : Nov 01, 2016 51-21-11 Application of Protective Treatment to Metal Parts Manual : SRM Selected effectivity : 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. (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 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 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 Print Date: December 29, 2016 Page 6 of 29 © AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
Customer : ENV Type : A320 Rev. Date : Nov 01, 2016 51-21-11 Application of Protective Treatment to Metal Parts Manual : SRM Selected effectivity : ITEM NOMENCLATURE QTY MATERIAL/REMARKS 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. (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 INSTRUCTIONS FOR EACH MATERIAL WHICH YOU USE FOR CLEANING PROCEDURES BEFORE YOU START THE CADMIUM PLAT- ING. THESE CLEANING AGENTS ARE HARMFUL. WARNING: OBEY THE MANUFACTURER INSTRUCTIONS FOR EACH CHEMICAL WHICH YOU USE IN THIS PROCEDURE. THESE CHEMICALS ARE POISONOUS AND HARM- FUL. Print Date: December 29, 2016 Page 7 of 29 © AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
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A 320 SRM 51-21-11 APLICATION OF PROTECTIVE TREATMENT TO METAL PARTS

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