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铸铁护栏的防锈处理及防锈工艺流程!

来源:http://www.zgcjxdw.com添加时间:2021-02-06 16:51:07

目前铸铁护栏有效、实用的防锈方法是热浸镀锌。即在铸铁护栏在熔化的锌液中在表面生成锌铁合金层及纯锌层,用以隔绝铁艺工件被氧化的机会。防锈期长达20-50年以上,期间无需维修,安全可靠,是铁艺工件的佳防锈方法。

At present, hot dip galvanizing is an effective and practical anti rust method for cast iron guardrails. That is to say, a zinc iron alloy layer and a pure zinc layer are formed on the surface of the cast iron guardrail in the molten zinc liquid, so as to isolate the chance of iron work pieces being oxidized. The antirust period is more than 20-50 years without maintenance. It is safe and reliable. It is a good antirust method for iron work pieces.

热浸镀锌的工艺流程

Technological process of hot dip galvanizing

1、酸洗前检查处理

1. Inspection and treatment before pickling

检查铁艺工件是否具备本厂镀锌的工艺孔(排气、出入锌夜、吊挂),铁艺工件表面的锈蚀程度,表面覆盖物能否被盐酸除去(如有油漆、油脂等应采用火烧、打磨、碱洗等法除去)。

Check whether the ironwork pieces have the process holes for galvanizing in our factory (exhaust, zinc night, hanging), the corrosion degree of the surface of the ironwork pieces, and whether the surface covering can be removed by hydrochloric acid (if there is paint, grease, etc。, it should be removed by fire, grinding, alkali washing, etc。)。

2、脱脂(碱洗)

2. Degreasing (alkali washing)

配有加热设备,消除铁艺工件表面的油脂、涂料等。

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

                                      QQ截图20160713182644.png

3、水洗

3. Water washing

清除铁艺工件表面的碱水及附着物。

Remove alkaline water and attachments on the surface of iron work pieces.

4、酸洗

3d捕鱼4. Pickling

除去铁锈、氧化皮等其它表面覆盖物

Remove rust, scale and other surface coverings

5、酸洗后检查处理:

3d捕鱼5。 Inspection and treatment after pickling:

酸洗效果是否理想,如酸洗不充分,再次酸洗,如果酸洗前处理不彻底,需重新处理后再次酸洗。

Whether the pickling effect is ideal, if the pickling is not sufficient, pickling again, if the pickling is not thorough, it needs to be treated again and then pickling again。

6、水洗

6。 Water washing

除去铁艺工件表面的酸水及其它附着物

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

7、上助镀剂

7. Upper plating aid

再次清洗工件表面,保证表面在镀锌之前不在生锈。

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

8、烘干

8. Drying

提高铁艺工件温度,避免铁艺表面水分过多,在镀锌时发生爆炸。

Increase the temperature of iron work piece to avoid too much water on iron surface and explosion during galvanizing。

9、热浸锌

9。 Hot dip galvanizing

工件浸泡于440℃-470℃熔融的锌液中,达到一定时间后提出,铁艺工件表面被获得一层锌铁合金层和纯锌层镀层。

3d捕鱼When the workpiece is immersed in molten zinc at 440 ℃ - 470 ℃ for a certain time, a layer of zinc iron alloy and pure zinc coating are obtained on the surface of the workpiece。

10、钝化

10. Passivation

提供工件表面抗大气的腐蚀性能,减少或延长白锈出现的时间。

Provide the corrosion resistance of workpiece surface to atmosphere, reduce or extend the time of white rust.

11、冷却

11. Cooling

防止工件激冷回缩,产生集体组织开裂。

It can prevent the work piece from chilling and shrinking, resulting in collective structure cracking.

12、精整

12。 Finishing

清除锌瘤及附着在镀层表面的锌灰

Removal of zinc nodules and zinc dust adhering to the coating surface

13、检验

13. Inspection

镀层的检验和测定,工件的外观检查。

Inspection and measurement of coating, appearance inspection of workpiece.

上一篇:球墨井盖未来的发展将会如何?

下一篇:铸铁护栏所用油漆的干燥时间有多长?


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