碳钢管酸洗和钝化工艺

碳钢管酸洗和钝化工艺

Pickling and passivation technics for Carbon steel pipe 工艺材料：

工艺流程：

除锈除油二合一处理→中和处理→皮膜钝化处理→自然干燥→管件外部涂防锈剂。

Process:

Rust removing and oil cleaning at one time →Neutralization→passivation →Natural drying →Coat the pipe outside with Antirust .

(1)防锈除油二合一处理槽：

Rust removing and oil cleaning tank:

按体积比：BR-101A ：CA-66：水＝１：６：３配制工作液。当大气气压低或者天气有雾时，按１％向槽内加入ＢＮ－１１１酸雾抑制剂，用来控制槽液酸雾挥发。

As the ratio by volume to make the working solution .When the atmos is

low or there is any fog , add 1% Acid fog inhibitor BN-111 by volume . (2)中和处理槽：

Neutralizer Tank :

春、夏、秋季时：按重量比8~10%加入中和剂BH-008配制工作液。

冬季气温低时：按比重3~5%加入TS-300配制工作液。

春夏秋工件以中和为主；冬季以清洗为主。

In the season of spring ,summer and autumn :Add Neutralizer BH-008 8~10% by weight to make the working solution .

In winter ,when the temperature is low :Add Passivator TS-300 3~5% by weight to make the working solution .

(3)皮膜钝化处理槽：

Passivation tank :

按重量比10~15%加入水质调节剂TS-300配制工作溶液。

Add Passivator 10~15% by weight to make the working solution .

工作槽液的工艺参数：

technic data for the Working solution liquid in the tanks :

除锈除油二合一处理槽：常温浸渍，时间：30~90min，PH值≤1.5

Rust removing and oil cleaning tank: soakage at the normal temperature , time :30~90min ,PH≤1.5 .

中和槽：

春夏秋季：PH≧12，常温浸渍时间3~5min；冬季PH≧9，浸渍时间3~5min，温度30℃左右。

Neutralizer Tank :

In the season of spring ,summer and autumn : liquid PH PH≧12, soakage time 3~5min; In winter PH≧12, soakage time 3~5min. working temperature about 30℃ .

皮膜钝化处理槽：PH值≧10常温浸渍时间5~10min。

Passivation tank :

Liquid PH ≧10 . soakage time 5~10min.

操作工艺规程：

Working engineering procedure .

(1)向挂具筐内摆放钢管工件时，尽量考虑管内溶液容易排放掉。When put pipes in the working basket , please consider that the liquid in the pipe is easy to drain out .

(2)将工件吊放到工作槽溶液中的时候，要上下吊挂数次，使管件在溶液

中上下摆动以加快除锈除油速度。

When put the working box in the liquid , the box should be lift and lowed many times in order to make the pipe luffing in the mixture , that will make the working process of Rust removing and oil cleaning much faster .

(3)工件从除锈除油槽、中和槽和皮膜钝化槽中吊出后，都应采用双机吊

钩装吊挂具架，前后分别提升下降，以排净管内溶液。

When the pipes is taking out from the working solution of rust removing and oil cleaning tank, Neutralizer Tank and Passivation tank all should be luffing many times in order to drain out the liquid in the pipe .

(4)经常测定工作槽液的PH值并适当补充工艺材料，以保持工作槽液的

工作条件和工艺参数在最佳状态。

Test the PH of the working solution often , add suitable material , in order to keep the liquid working in best condition .