Inspection and treatment before pickling

檢查鐵藝工件是否具備本廠鍍鋅的工藝孔（排氣出入鋅夜吊掛），鐵藝工件表面的銹蝕程度，表面覆蓋物能否被鹽酸除去（如有油漆油脂等應(yīng)采用火燒打磨堿洗等法除去）。

Check whether the iron work piece has the galvanized process hole of the factory (exhaust and zinc hanging at night), the degree of corrosion on the surface of the iron work piece, and whether the surface covering can be removed by hydrochloric acid (if there is paint grease, it shall be removed by fire grinding, alkali washing, etc.).

脫脂（堿洗）

Degreasing (alkali washing)

配有加熱設(shè)備，消除鐵藝工件表面的油脂涂料等。

Equipped with heating equipment to eliminate grease and coating on the surface of iron work pieces.

水洗

washing

清除鐵藝工件表面的堿水及附著物。

Remove alkali water and attachments on the surface of wrought iron workpieces.

酸洗

pickling

除去鐵銹氧化皮等其它表面覆蓋物

Remove rust, scale and other surface coverings

酸洗后檢查處理：

Inspection and treatment after pickling:

酸洗效果是否理想，如酸洗不充分，再次酸洗，如果酸洗前處理不徹底，需重新處理后再次酸洗。

Whether the pickling effect is ideal. If the pickling is insufficient, pickling shall be carried out again. If the treatment before pickling is not complete, pickling shall be carried out again after re treatment.

水洗

washing

除去鐵藝工件表面的酸水及其它附著物

Remove acid water and other attachments on the surface of iron work pieces

上助鍍劑

Upper plating aid

再次清洗工件表面，保證表面在鍍鋅之前不在生銹。

Clean the workpiece surface again to ensure that the surface does not rust before galvanizing.

烘干

dry

提高鐵藝工件溫度，避免鐵藝表面水分過(guò)多，在鍍鋅時(shí)發(fā)生爆炸。

Raise the temperature of wrought iron workpiece to avoid excessive moisture on the surface of wrought iron and explosion during galvanizing.

熱浸鋅

Hot dip galvanizing

工件浸泡于440℃-470℃熔融的鋅液中，達(dá)到一定時(shí)間后提出，鐵藝工件表面被獲得一層鋅鐵合金層和純鋅層鍍層。

After the workpiece is immersed in molten zinc at 440 ℃ - 470 ℃ for a certain time, a layer of zinc iron alloy layer and pure zinc layer are obtained on the surface of iron workpiece.

鈍化

passivation

提供工件表面抗大氣的腐蝕性能，減少或延長(zhǎng)白銹出現(xiàn)的時(shí)間。

Provide atmospheric corrosion resistance of workpiece surface to reduce or prolong the time of white rust.

冷卻

cooling

防止工件激冷回縮，產(chǎn)生集體組織開裂。

Prevent the workpiece from chilling and retracting, resulting in collective structure cracking.

精整

Finishing

清除鋅瘤及附著在鍍層表面的鋅灰

Remove zinc nodules and zinc dust attached to the coating surface

檢驗(yàn)

test

鍍層的檢驗(yàn)和測(cè)定，工件的外觀檢查。

Inspection and measurement of coating and appearance inspection of workpiece.