Specific requirements for treatment before assembly of Lianggong valve:

1、根據加工要求，部分零部件需要做拋光處理，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、所有零部件進行脫脂處理

2. Degrease all parts

3、脫脂完成后進行酸洗鈍化，清洗劑不含磷

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

4、酸洗鈍化后用純凈水沖洗干凈，不能有藥劑殘留，碳鋼部件省去此步驟

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

5、逐個零部件用無紡布進行擦干，不能有線毛等留存部件表面，或者用潔凈的氮氣進行吹干

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、用無紡布或者濾紙沾分析純酒精對逐個零部件進行擦拭，直至沒有臟色。

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.

良工閥門裝配時技術要求：

Technical requirements for assembly of Lianggong valve:

1、安裝車間要保證潔凈，或者搭建臨時的潔凈區域，例如用新購的彩條布或者塑料薄膜等、，防止在安裝過程中有灰塵進入。

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、裝配工人要身著潔凈的純棉工作服，頭戴純棉帽，頭發不能外漏，腳穿干凈鞋子，手戴塑膠手套，脫脂。3、裝配用工具要在裝配前進行脫脂清洗，保證潔凈。

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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