6.Repairing Magnesium Parts
修理镁零件
A.Method No. 406A: Minor Damage Repair
Method No. 406A:轻微损坏修理
NOTE: Refer to Method No. 403L for repair of paint coatings for magnesium parts.
注：镁零件的油漆涂层修理请参考Method No. 403L。
Repair minor damage to magnesium-alloy parts as follows:
按如下步骤修复镁合金零件的轻微损伤：
WARNING: WHENEVER MAGNESIUM-ALLOY PARTS ARE REWORKED, CARE MUST BE EXERCISED TO REMOVE ALL DUST, FILLINGS, TURNINGS, AND SHAVINGS AS THEY ARE FORMED. MAGNESIUM IN THESE FORMS IS HIGHLY FLAMMABLE, AND UNDER CERTAIN CONDITIONS, EXPLOSIVE. PERSONNEL SHALL WEAR PROTECTIVE COVERING AT ALL TIMES.
警告：当镁合金零件被返工（再加工）时，必须小心去除所有形成的粉尘、填充物、切削物和削片。这些形式的镁极易燃，在特定条件下具有爆炸性。工作人员应始终穿戴防护罩。
CAUTION: WHEN YOU DO THIS PROCEDURE, BE SURE TO USE GOOD SHOP PRACTICES AND COMMON SENSE, ABUSIVE BLENDING CAN CAUSE DAMAGE THAT IS HARMFUL TO THE LIFE AND FUNCTION OF THE REPAIRED PART.
注意：执行本步骤时，务必采用良好的车间操作规范和常识，不当的打磨可能对修复零件的寿命和功能造成有害损坏。
(1) Blend damage with abrasive cloth C08-0001 and oil to remove burrs, scratches and galling.
使用砂布C08-0001和油进行打磨损伤处理，以去除毛刺、划痕和擦伤。
(2) Repair areas of magnesium parts which are corroded, or where original surface treatment is no longer effective, as follows:
对镁零件的腐蚀区域或原始表面处理不再有效的区域进行如下修理：
(a) Remove corrosion with wire brush C08-0030 or abrasive cloth C08-0001, where close tolerances are not necessary.
在不需要严格公差的情况下，使用钢丝刷C08-0030或砂布C08-0001去除腐蚀。
(b) Apply touch-up solution where close tolerances must be observed.
在必须遵守严格公差的情况下，使用修补溶液。
1 Use Dow 19 touch-up solution. Refer to Method No. 402G for mixing instructions.
使用Dow 19修补溶液。有关混合说明，请参见Method No.402G
2 Increase temperature of solution to 180 to 200°F (82 to 93°C).
将溶液温度升高至180至200 F (82至93 C）。
(c) After treating defective surface, fully flush parts with clean tap water.
处理缺陷表面后，用清洁的自来水彻底冲洗零件。
(d) Immediately dry part in an oven at 250°F (121°C) for two hours.
立即放入烤箱，以250°F (121°C) 烘烤两小时。
(e) Apply touch-up solution on cleaned magnesium parts areas or where original treatment is not effective. Use a brush.
在清洁的镁零件区域或原始处理无效的区域上涂补漆溶液。使用刷子。
1 Use Dow 19 touch-up solution. Refer to Method No. 402H for mixing instructions.
使用Dow 19修补溶液。有关混合说明，请参见Method No. 402H。
2 Increase temperature of magnesium touch-up solution to 160 to 200°F (71 to 93°C). Make sure solution remains on surface for a minimum of five inutes.
将镁补漆溶液的温度升高至160 to 200°F (71 to 93°C)。确保溶液在表面保持至少五分钟。
WARNING: USE THE CORRECT PERSONAL PROTECTION. THIS CHEMICAL SOLUTION CAN CAUSE SKIN, EYE AND LUNG DAMAGE. THE DANGER AND PRECAUTIONS FOR EACH CHEMICAL IS DIFFERENT.
警告：使用正确的个人防护设备。本化学品溶液可能造成皮肤、眼睛和肺部损伤。每种化学品的危险和注意事项不同。
(f) Cover treated surface with one coat of primer C03-0007.
用一层底漆C03-0007覆盖处理过的表面。
(g) Air dry part for 15 to 30 minutes.
用干燥空气干燥15至30分钟。
(h) Bake part for one hour at 150 to 175°F (66 to 79°C), or 30 minutes at 275 to 300°F (135 to 149°C).
在150-175°F (66-79°C)下烘烤一小时，或者在275-300°F(135-149°C）下烘烤30分钟。
(i) Touch up bare spots on painted surfaces. Refer to Method No. 409A or 409B, as specified in applicable manual.
对涂漆表面的裸露部位进行修补。请参考适用手册中规定的Method No. 409A 或 409B。
