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 : 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 (180 grade) or aluminum oxide powder on a water moistened swab. Feather the edge as shown on Figure 001 . - Rinse with de-mineralized water. - 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. - Using a prepared tampon move the tampon and apply plating solution at forward 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). 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).(f).5.e . - Rinse the area with cold running water. - 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. - Rinse the area with clean cold running water. - 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 or absorbent paper or clean cotton wool. - Inspect the treated area as described in Paragraph 2.B.(1).(e).5.d . NOTE: Make sure that the required paint coatings are applied within 16 hours. NOTE: Do not return used solutions in original containers. The solutions, rinsing water 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. e DALIC Solution 2023 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. Print Date: December 29, 2016 Page 26 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 : The treatment must be achieved in totality without interruption. - Manually abrade the area to be plated using a water wetted abrasive paper (180 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). 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 Paragraph 2.B.(1).(f).5.e . - Rinse the area with cold running water. - 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. - Rinse the area with clean cold running water. - Dry the repair area with an air blast or with a hot air dryer at a maximum temperature of 50° C (122° F). - Inspect the treated area as described in Paragraph 2.B.(1).(e).5.d . NOTE: Make sure that the required paint coatings are applied within 16 hours. NOTE: Do not return used solutions in original containers. The solutions, rinsing water 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. Print Date: December 29, 2016 Page 27 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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