What are the main aspects of the influence of the roll surface roughness of the cold roll on the rolled product?

The influence of the roll surface roughness of the cold roll on the rolled product is mainly manifested in the following aspects:
1. Surface quality: The roughness of the roll surface is an important factor affecting the surface quality of rolled products. If the roughness of the roll surface is too large, it will lead to quality problems such as unevenness and scratches on the surface of the rolled product, which will affect the appearance and performance of the product. Specifically, when the roll roughness is large, it is easy to produce thin cracks on the surface of the sheet, which can cause the surface quality of the material to deteriorate and destroy the integrity of the material.


2. Rolling force: The roughness of the roll surface will increase the friction during rolling, thereby increasing the rolling force. This affects the productivity of the rolling mill and can increase production costs.
3. Product thickness and plate shape: The roughness of the roll surface will also affect the thickness and plate shape of the rolled product. If the roughness of the roll surface is uneven, it will lead to uneven thickness of the rolled product and poor plate shape, which will affect the quality of the product and the use effect.
4. Roll life: Similar to hot rolls, the roughness of the roll surface of cold rolls will also affect its service life. Excessive roughness accelerates the wear and fatigue damage of the rolls, shortening their service life.
In addition, it is worth noting that under the condition of lubrication and rolling, the degree of influence of roll surface roughness on the surface quality of aluminum will be restricted by the thickness and condition of the oil film between the rolled piece and the roll. Therefore, when selecting cold rolls, it is necessary to select the appropriate roll surface roughness according to the actual rolling needs and product quality requirements, so as to ensure that the production needs can be met and the product quality can be guaranteed. At the same time, it is also necessary to regularly inspect and maintain the cold rolls to ensure their normal operation and prolong their service life.

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