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    冷拔无缝钢管进行酸洗除锈方法

    2018-12-13 09:05:02 无锡盛发地坪科技有限公司 阅读

    冷拔无缝钢管在生产中也是不断地进行发挥出来巨大的作用的,但是冷拔钢管在进行维护和保养的过程中并不是一番风顺的,由于这样或者是那样的原因导致冷拔钢管生锈的现象是比较多的,对于冷拔钢管生锈的后果是不能进行使用了,丧失了冷拔钢管原来的特性。这个时候就要进行酸洗了,那么冷拔钢管是怎样进行酸洗除锈的呢?

    Cold-drawn seamless steel pipe is also playing a great role in production, but the process of maintenance and maintenance of cold-drawn steel pipe is not smooth, because of this or that reason, the phenomenon of cold-drawn steel pipe rusting is more, for the consequence of cold-drawn steel pipe rusting can not be used, lost the original characteristics of cold-drawn steel pipe. 。 At this time, pickling will be carried out, so how do cold-drawn steel pipes do pickling and rust removal? 

    冷拔钢管及氧化物在盐酸和硫酸中的溶解度不同。20℃时,每100g试件在10%的盐酸溶液中可溶解7.5g三氧化二铁,而在10%的硫酸溶液中只能溶解0.98g三氧化二铁。在相同温度、浓度下,盐酸对铁件的溶解度大于硫酸7倍以上。所以在钢铁表面除锈多用盐酸。盐酸除锈速度快、效率高、不产生氢脆、表面状态好,在配制洗液时又比硫酸安全、经济。

    The solubility of cold-drawn steel pipe and oxide in hydrochloric acid and sulfuric acid is different. Ferric trioxide can be dissolved 7.5 g in 10% hydrochloric acid solution and 0.98 g in 10% sulfuric acid solution at 20 C. At the same temperature and concentration, the solubility of hydrochloric acid to iron parts is more than 7 times higher than that of sulfuric acid. Therefore, hydrochloric acid is often used to remove rust on steel surface. Hydrochloric acid has the advantages of fast rust removal, high efficiency, no hydrogen embrittlement and good surface condition. It is safer and more economical than sulfuric acid in the preparation of lotion.

    用酸洗的办法危害工人身体健康,排放废液会造成工业污染,需要"三废"治理,酸洗后还很容易产生氧化皮锈层,如果钢铁设备长期暴露在空气中,会很快被腐蚀,人们正在寻求能替代此种方法的新工艺。在冷加工行业如:接管、拉丝、挤压、深拉延等工序,要求磷化膜提供减摩润滑性能,一般采用锌系磷化,一是锌系磷化膜皂化后形成润滑性很好的硬脂酸锌层,二是锌系磷化操作温度比较低,可在40、60或90℃条件下进行磷化处理,磷化时间4~10min,有时甚至几十秒钟即可,磷化膜重量要求≥3g/m2便可。

    The method of pickling endangers the health of workers. Discharging waste liquor will cause industrial pollution. It needs to be treated by "three wastes". It is easy to produce oxide rust layer after pickling. If steel equipment is exposed to air for a long time, it will be corroded quickly. People are looking for a new technology to replace this method. In cold processing industry, such as takeover, wire drawing, extrusion and deep drawing, phosphating film is required to provide anti-friction and lubrication performance. Zinc phosphating film is generally used. First, zinc stearate layer with good lubricity is formed after saponification of zinc phosphating film. Second, zinc phosphating operation temperature is relatively low. Phosphating treatment can be carried out at 40, 60 or 90 degrees C. Phosphating time is 4-10 minutes, sometimes even tens of minutes. The weight of phosphating film should be more than 3g/m2 in seconds.

    冷拔钢管的酸洗要依据化学原理进行,但是酸洗比较费时间和经历,大家可以根据自己的实际情况进行适当的去选择,另外当冷拔冷拔钢管出现生锈的时候不要急于用肥皂水和洗衣液进行冲洗,以免出现各种各样的不利的影响!

    Pickling of cold-drawn steel pipes should be carried out according to chemical principles, but pickling takes time and experience. Everyone can choose it appropriately according to their actual situation. In addition, when the cold-drawn steel pipes are rusty, don't rush to wash them with soap water and laundry detergent, so as to avoid all kinds of adverse effects.



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