4. Repairing Aluminum Parts
修理铝制零件
B.Method No. 404B: Heavy Corrosion, Hard Carbon, Paint, and Scale Removal
Method No. 404B:去除严重腐蚀、硬质碳、油漆和水垢
Remove heavy corrosion, hard carbon, paint, and scale from aluminum-alloy parts as follows:
按如下步骤去除铝合金零件上的严重腐蚀、硬质碳、油漆和氧化皮：
CAUTION: MAKE SURE TO TAKE CARE IN MASKING AND SEALING OF PARTS TO MAKE SURE ALL AIR/OIL PORTS, STRUCTURAL OPENINGS, AND RELATED SURFACES OF PARTS ARE PROTECTED FROM OVERBLAST.
注意：务必小心地对零件进行遮蔽和密封，以确保所有空气/油口、结构开口和零件的相关表面都受到保护，以免受到过度喷砂的影响。
(1) Mask all surfaces that can be damaged with the abrasive blasting.
遮盖所有可能被喷砂损坏的表面。
(2) Put the part in a standard sandblast cabinet.
将零件放入标准喷砂柜中。
(3) Set sandblast cabinet pressure to 15 to 30 psig (103 to 207 kPa).
将喷砂柜压力设定为15至30 psig（103至207 kPa）。
WARNING: USE THE CORRECT PERSONAL PROTECTION. GRIT BLAST PROCEDURES WILL CAUSE LOOSE PARTICLES THAT CAN GET IN YOUR EYES.
警告：使用正确的个人防护。喷砂程序会产生松散的颗粒，可能进入眼睛。
CAUTION: KEEP SANDBLAST NOZZLE IN MOTION TO PREVENT BLAST FROM DWELLING ON ONE SPOT.
注意：保持喷砂嘴持续运转，以防止砂粒在某个位置停留。
(4) Sandblast the part with sand blast media C04-0038. Air pressure must be reduced as required to control the action on base metal of part.
用砂喷射介质C04-0038对零件进行喷砂。按需降低气压，以控制对零件基体金属的作用。
(5) Remove the part from sandblast cabinet, remove unwanted sand blast with clean compressed air.
从喷砂柜中取出零件，用清洁的压缩空气清除不需要的喷砂。
