Preliminary Requirements

Safety Requirements

WARNING

IT IS THE RESPONSIBILITY OF THE OPERATOR TO OBTAIN AND OBSERVE THE MATERIAL MANUFACTURER'S SAFETY DATA SHEETS FOR CONSUMABLE MATERIALS (THESE CONTAIN INFORMATION SUCH AS HAZARDOUS INGREDIENTS, PHYSICAL/CHEMICAL CHARACTERISTICS, FIRE HAZARD DATA, EXPLOSION HAZARD DATA, REACTIVITY HAZARD DATA, HEALTH HAZARD DATA, PRECAUTIONS FOR SAFE HANDLING, AND USE AND CONTROL MEASURES), AND ALSO TO TAKE LOCAL REGULATIONS INTO CONSIDERATION.

Procedure

1. SUBTASK 70-38-02-160-001 Acid Addition Agent CoMat 01-219 or Wetting Agent CoMat 01-563 Solutions

   1. These solutions are aqueous and contain 1 percent by volume of either CoMat 01-219 ACID ADDITION AGENT or CoMat 01-563 WETTING AGENT.

   2. Make up the solution in a stainless steel tank. Keep a temperature of 59 deg F to 77 deg F (15 deg C to 25 deg C).

   3. Control the solution as specified in SPM TASK 70-38-02-200-502, SUBTASK 70-38-02-180-001.

2. SUBTASK 70-38-02-160-002 Phosphoric Acid Solution CoMat 01-016

   1. The solution is aqueous and contains 3.67 lb/gal (440 g/l) of CoMat 01-016 PHOSPHORIC ACID H3PO4. The solution is made up by adding 330 ml of CoMat 01-016 PHOSPHORIC ACID H3PO4 (specific gravity 1.65) to 670 ml of water.

   2. Make up the solution in a polythene tank. Keep the solution at a temperature of 59 deg F to 77 deg F (15 deg C to 25 deg C).

   3. Control the solution as specified in SPM TASK 70-38-02-200-502, SUBTASK 70-38-02-180-002.

3. SUBTASK 70-38-02-160-003 Brushing Conversion Solutions

   1. Use one of the SUBTASK 70-38-02-160-003-00x conversion brushing solutions.

4. SUBTASK 70-38-02-160-003-001 Make-up of Brushing Conversion Solution CoMat 07-023

   1. Mix equal volumes of Part A and Part B of CoMat 07-023 CHROMATE CONVERSION COATING FOR ALUMINUM, BRUSH TYPE in a polythene container. Use the mixture immediately and discard all solution not used.

      NOTE

      The performance of brushing conversion solution CoMat 07-023 CHROMATE CONVERSION COATING FOR ALUMINUM, BRUSH TYPE becomes unsatisfactory if you keep the solution in storage.

5. SUBTASK 70-38-02-160-003-002 Make-up of Brushing Conversion Solution CoMat 07-109

   1. Make up the CoMat 07-109 CHROMATE CONVERSION COATING FOR ALUMINUM, BRUSH TYPE to the manufacturer's instructions in a polythene container. Use polythene containers for storage of the solution.

   2. Control the solution as specified in SPM TASK 70-38-02-200-502, SUBTASK 70-38-02-180-003.

   3. Alternatively, it is permitted to purchase the solution ready to use from the manufacturer.

6. SUBTASK 70-38-02-160-003-003 Make-up of Brushing Conversion Solution CoMat 07-165

   1. Make up and control the CoMat 07-165 CHROMATE CONVERSION COATING to the manufacturer's instructions.

7. SUBTASK 70-38-02-160-003-004 Make-up of Brushing Conversion Solution CoMat 02-136

   1. Add 1.06 oz.wt (30 g) of the CoMat 02-136 CHROMATE CONVERSION SALT to approximately 500 ml of CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER. Stir to dissolve. Add 0.02 fl.oz (0.528 ml) of CoMat 02-137 WETTING AGENT. Mix the solutions then add CoMat 01-201 DISTILLED, DEIONIZED, DEMINERALIZED, OR REVERSE OSMOSIS (RO) WATER to make the volume 1 liter.

   2. Control the solution as specified in SPM TASK 70-38-02-200-502, SUBTASK 70-38-02-180-003.

8. SUBTASK 70-38-02-160-003-005 Make-up of Solution Code 206 Brushing Conversion Solution CoMat 01-275

   1. This is an aqueous solution that has a nominal concentration of 2 oz.wt/gal (15 g/l) CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINUM CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM.

   2. Do the applicable procedure to make the solution:

      1. For each gallon of solution, dissolve 2 oz.wt of CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM in approximately 0.125 gal (0.473 l) of water and then add this solution to approximately 0.75 gal (2.83 l) of water. Fully mix the solution and then add sufficient water to increase the solution volume to 1 gal (3 l).

      2. For each liter of solution, dissolve 15 g of CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM in approximately 0.125 liters of water and then add this solution to approximately 0.75 liters of water. Fully mix the solution and then add sufficient water to increase the solution volume to 1 liter.

   3. Control the solution as specified in SPM TASK 70-38-02-200-502, SUBTASK 70-38-02-180-003.

9. SUBTASK 70-38-02-160-003-006 Make-up of Brushing Conversion Solution CoMat 01-588

   1. CoMat 01-588 CHROMATE CONVERSION COMPOUND is supplied ready-to-use. Use it as-received.

10. SUBTASK 70-38-02-160-004 Dipping/Immersion Conversion Solutions

    1. Use one of the SUBTASK 70-38-02-160-004-00x dipping/immersion conversion solutions.

11. SUBTASK 70-38-02-160-004-001 Make-up of Dipping Conversion Solution CoMat 01-275 (Deleted)

    This subtask is deleted.

12. SUBTASK 70-38-02-160-004-002 Make-up of Dipping Conversion Solution CoMat 01-275

    1. This is an aqueous solution that contains CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM.

    2. Make up and keep the solution as specified in the manufacturer's instructions.

    3. Control the solution to the manufacturer's instructions.

13. SUBTASK 70-38-02-160-004-003 Make-up of Dipping Conversion Solution CoMat 07-172 (Deleted)

    1. This subtask is deleted.

14. SUBTASK 70-38-02-160-004-004 Make-up of Dipping Conversion Solution CoMat 07-173

    1. This is an aqueous solution that contains CoMat 07-173 CHROMATE CONVERSION COATING in water.

    2. Make up and keep the solution as specified in the manufacturer's instructions.

    3. Control the solution as specified by the manufacturer.

15. SUBTASK 70-38-02-160-004-005 Make-up of Immersion Conversion Solution CoMat 02-136

    1. This is an aqueous solution that contains 0.75 oz/gal to 2.24 oz/gal (5.65 g/l to 17 g/l) of CoMat 02-136 CHROMATE CONVERSION SALT.

    2. Make up and keep the solution as specified in the manufacturer's instructions.

    3. Control the solution as specified in the manufacturer's instructions.

16. SUBTASK 70-38-02-160-004-006 Make-up of Immersion Conversion Solution CoMat 07-029

    1. This is an aqueous solution that contains 0.87 oz/gal to 1.27 oz/gal (6.5 g/l to 9.5 g/l) of CoMat 07-029 CHROMATE CONVERSION COATING FOR ALUMINUM, IMMERSION TYPE.

    2. Make up the solution in a polythene or stainless steel tank. Add CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE to a new bath to bring the pH to between 1.9 and 2.1. The necessary amount of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE to adjust the pH is approximately 800 ml of CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE for each 100 l of solution. Let the new solution stabilize at ambient temperature to let the pH decrease to its usual operating range of 1.5 to 2.0. Operate the solution at a temperature between 90 deg F (32 deg C) and 95 deg F (35 deg C).

    3. Control the solution as specified in the manufacturer's instructions.

17. SUBTASK 70-38-02-160-004-007 Make-up of Immersion Conversion Solution CoMat 07-106

    1. For the make-up and control, refer to the manufacturer's instructions.

18. SUBTASK 70-38-02-160-008 Conversion Drying-off Solution (Deleted)

    This subtask is deleted.

19. SUBTASK 70-38-02-100-001 Make-up of the Solutions

    1. This subtask is deleted. The contents are now in individual subtasks.