Specific requirements for treatment before assembly of Lianggong valve:

1、根据加工要求，部分零部件需要做抛光处理，表面不能有加工毛刺等

1. According to the processing requirements, some parts need to be polished, and there shall be no machining burrs on the surface

2、所有零部件进行脱脂处理

2. Degrease all parts

3、脱脂完成后进行酸洗钝化，清洗剂不含磷

3. Pickling and passivation shall be carried out after degreasing, and the cleaning agent does not contain phosphorus

4、酸洗钝化后用纯净水冲洗干净，不能有药剂残留，碳钢部件省去此步骤

4. After pickling and passivation, rinse with purified water without reagent residue. This step is omitted for carbon steel parts

5、逐个零部件用无纺布进行擦干，不能有线毛等留存部件表面，或者用洁净的氮气进行吹干

5. Wipe the parts one by one with non-woven cloth, do not leave the surface of parts such as wire wool, or blow dry with clean nitrogen

6、用无纺布或者滤纸沾分析纯酒精对逐个零部件进行擦拭，直没有脏色。

6. Wipe the parts one by one with non-woven fabric or filter paper stained with analytical pure alcohol until there is no dirty color.

良工阀门装配时技术要求：

Technical requirements for assembly of Lianggong valve:

1、安装车间要保证洁净，或者搭建临时的洁净区域，例如用新购的彩条布或者塑料薄膜等、，防止在安装过程中有灰尘进入。

1. The installation workshop shall be clean, or a temporary clean area shall be built, such as newly purchased color strip cloth or plastic film, to prevent dust from entering during installation.

2、装配工人要身着洁净的纯棉工作服，头戴纯棉帽，头发不能外漏，脚穿干净鞋子，手戴塑胶手套，脱脂。3、装配用工具要在装配前进行脱脂清洗，保证洁净。

2. Assembly workers shall wear clean cotton overalls, cotton hats, hair shall not leak out, feet shall wear clean shoes, hands shall wear plastic gloves and degrease. 3. The assembly tools shall be degreased and cleaned before assembly to ensure cleanliness.

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