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Hujin Roller Industry
MR Ren 18916939942
MR Duan 18018278881
CZhujin@163.com
Group 5, Xiangxiang Village, Hengshanqiao Town, Wujin, Changzhou
MR Duan 18018278881
CZhujin@163.com
Group 5, Xiangxiang Village, Hengshanqiao Town, Wujin, Changzhou
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Rubber hardness and thickness
Time:2019-08-17 Hit Count:
Most of the rubber rollers use their good elasticity, so the choice of hardness and thickness is carefully decided. The choice of rubber hardness or thickness can not be arbitrarily chosen, but has a certain limit.
Because it is difficult to make high-strength rubber below JISA40 hardness, high-weight rubber rollers cannot be formulated with low hardness. The soft rubber has a very large compression deformation, and the internal heat is prone to aging and shortens the service life.
Rubber thickness is closely related to heat vulcanization and is partially limited. Because rubber itself is a poor conductor of heat, the increase in thickness is bound to cause uneven vulcanization. Usually, the rubber thickness is between 10 and 35 mm, and if it is less than 10 mm, it will be difficult to re-grind and reuse.
When the hardness is measured by a spring-type hardness tester, in principle, the rubber thickness is 12mm or more, and when the rubber roller rubber thickness is less than 12mm, the hardness will be higher due to the influence of the iron core during the measurement, especially the soft rubber. Greater impact. In addition, the measurement surface is smooth, and the pin is perpendicular to the measurement surface, and the pressure surface and the auxiliary pressure surface are gently contacted with the measurement surface to read the degree by the scale.
