Roller refers to a cylindrical, rotatable object in machinery. A power source is commonly used in machinery to drive the roller to drive other materials forward, or use the roller to generate pressure to process the material.
1. The roller should have sufficient rigidity to ensure that the bending deformation does not exceed the allowable value under heavy load.
2. The surface of the roller should have sufficient hardness, generally required to reach HRC above 50 degrees, and has strong corrosion resistance. The coating has anti-stripping ability to ensure that the working surface of the roller has good wear resistance and corrosion resistance.
3. The working surface of the roller should be finely processed to ensure dimensional accuracy and surface roughness. The roughness should be above Ra0.16, and there should be no pores or grooves. The wall thickness of the working surface of the roller must be uniform, otherwise the temperature of the roller surface will be uneven, affecting the quality of the product.
4. The material of the roller should have good thermal conductivity, usually using chilled cast iron, and in special cases using cast steel or molybdenum chromium alloy steel, whether it is heated or cooled, it can achieve rapid and uniform.
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