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Three kinds of calculation methods of rubber tube sizing material shrinkage
Three kinds of calculation methods of rubber tube sizing material shrinkage is mainly in accordance with the actual situation to calculate, mainly rubber and die cavity corresponding to the size; Shore Hardness Calculation of rubber materialshrinkage; vulcanization temperature calculation in rubber material shrinkagerate. Below small make up specific share it.
The calculation formula of A. rubber and die cavity corresponding size:
C= (L2 L1) / L1 X 100%
C rubber material shrinkage rate:
L1 room temperature measured by the size of rubber products;
L2 room temperature measurement of the mold cavity size.
B. to shore hardness empirical formula to calculate the material shrinkage ofrubber:
C= (2.8---0.02K) X 100%
K rubber hardness.
The general formula of shrinkage rate of C. in vulcanization temperaturecalculation of rubber material:
C= (alpha and beta) Delta T? R X 100%
Linear expansion coefficient alpha rubber;
Beta - mould material coefficient of linear thermal expansion,
Delta T - curing temperature and measurement temperature difference,
R rubber, sulfur, organic complexing agent in rubber volume percentage (%).
This article from the Shenzhen City Qiyu Silicone Rubber Co., Ltd.: http://www.szhcty.com/news_v.asp? Id=196
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