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Why does the cold roll of cold rolling mill peel off

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作者来源: 铝箔轧机 发布时间:2022-09-09
导读:In the process of using the cold rolling mill, it was found that the cold roll peeled off, so the rolling could not be continued, so as not to affect the produc...

In the process of using the cold rolling mill, it was found that the cold roll peeled off, so the rolling could not be continued, so as not to affect the product quality. In this case, it is not only necessary to simply replace the drum, but also to find out the cause, so as to extend the service life of cold rolling.
The uneven quality of cold roll may be caused by grain dislocation or impurities in cold roll. This makes the cold roll work for a long time, because of the friction between the roll surface and the edge of the plate, the cutting stress is too large, resulting in peeling.
So, what is the cause of grain dislocation in the cold rolling mill? On the one hand, when the adhesive roll appears in the production process, the pressure will increase immediately, resulting in pits or bulges on the roll surface, which is easy to cause peeling. On the other hand, in the rolling process, there will be operation errors or large feeding, resulting in burns on the roll surface. At this time, the grinding liquid will cause crystal variation and form spalling.


In addition, if the rolling force is too large in the production process of the cold rolling mill, which exceeds the allowable stress, it will lead to roller fatigue and damage, and also lead to roller peeling. In addition, if the cold roll fails to completely grind the crack car last time, it will lead to crack propagation and roll peeling in the next use.
In view of the above reasons, in the rolling process of the cold rolling mill, it is necessary to strictly control the rolling force and feed rate and operate in strict accordance with the correct process; In addition, relevant inspections must be carried out to reduce unnecessary problems.

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