Why should rolling oil be used in quality control of cold rolled stainless steel sheets

- Jan 25, 2019 -

In the process of rolling cold-rolled stainless steel, in order to ensure the quality of the stainless steel plate, one of the factors must be the use of rolling oil. Because the cold rolling of the stainless steel sheet is a processing method in which the rolling member is plastically deformed by applying pressure to the rolling member under a certain condition under certain conditions.

 

When the stainless steel sheet is pressed, the section will be reduced, the shape of the product will change, the length of the board will extend, and the width will be accompanied by the widening. At this time, the surface of the rolled piece and the roll will form a relative sliding, forming friction, accompanied by friction. Heat and deformation heat. During the rolling process, under the action of the pressure in the deformation zone, the rolls will be elastically deformed, and the stainless steel sheet will be plastically deformed. The rolling oil enters the deformation zone through the wedge action of the stainless steel sheet, and adheres to the stainless steel plate and the roll, thereby achieving the lubrication and cooling effect.

The role of rolling oil in the cold rolling process of stainless steel sheets is as follows.

 

One is to lubricate the rolls and the stainless steel plate to reduce the external friction between the rolled metal and the rolls, so as to reduce the roll wear, reduce the total rolling pressure and energy consumption, increase the pass reduction rate, and reduce the rolling pass times. Increase the rolling speed.

 

The second is to adequately cool the rolling deformation zone. By means of the cooling effect of the rolling oil, the softening of the rolls and the change of the roll shape can be avoided, the rolling process of the cold rolling of the stainless steel plate is more stable, the precision and the shape of the stainless steel plate are strictly controlled, and the precision and surface smoothness of the stainless steel plate after rolling are ensured. .

 

The third is to clean the surface of the rolling zone and the stainless steel plate to prevent mechanical scratches on the surface of the roll and the stainless steel plate, and at the same time, to adhere a layer of oil film on the surface of the rolled stainless steel plate, which is beneficial to achieve rust prevention during the turnaround of the subsequent process.

 

The performance of the rolling oil will directly affect the stability of the rolling process and the surface quality of the stainless steel plate. In order to ensure the stable rolling process, the rolling oil should meet the following performance requirements and have excellent lubricating properties. Secondly, it has good cooling performance; it has excellent rust prevention performance, good detergency, good chemical stability and environmental protection.


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