Different processes to choose the different roller
In particular, mirror roll roller for plastic packaging industry is not prepared an important and indispensable component, whether it is rolling, extrusion or tape casting are inseparable from the rollers. Production of quality precision roller surface and internal structure of the rational flow and processing accuracy is good or bad, will directly affect the quality of plastic products, in particular, is especially true for the plastic film. Thus providing a high quality plastic film roll film products for manufacturers is particularly important. A wide range of roller, and has its unique role, divided by process rolling stick, pressure bachelor, tape roll so divided by function and purpose of the heating roll, cooling rolls, away from the roller, roller, etc., by structure divided into seamless roller, centrifugal casting and forging roll. In short, plastic products, different processes require different roller, therefore, as a roller roller manufacturer in the production process to undertake, should be for different products, different process design and manufacture of the corresponding roller, roller in order to ensure the production process to play its normal role. Regardless of what technology means to the roller structure, design, material selection and processing should meet some essential requirements:
1. Roller should have sufficient rigidity to ensure that under heavy load, bending does not exceed the allowable value.
2. HRC5 Roller surface should have sufficient hardness, general requirements to HRC5
0 degrees, with strong corrosion resistance. Coatings have anti-stripping ability, to ensure that the working surface of the roller has good wear resistance and corrosion resistance.
3. Roller work surface should be fine processing, in order to ensure dimensional accuracy and surface roughness. Roughness should Ra0.16 above, can not have pores or grooves. Working surface roller thickness to be uniform, otherwise it would be uneven roll surface temperature, affecting the product quality.
4. Roller material should have good thermal conductivity, usually chilled cast iron, cast steel or special circumstances chrome molybdenum alloy steel used, whether heating or cooling, can achieve rapid and uniform.
5. Roller designed to facilitate the processing and low cost.
