Jiacheng graphite mould manufacturers share their experience with you after years of practical management. Through the analysis of the working conditions, damage types and causes of graphite mould, Jiacheng graphite mould thinks that graphite materials should have the following technical properties:

Which is the best one for Jiacheng graphite mould

1、 Suitable resistivity: the resistivity of graphite material should match with different heating methods and hot pressing winding process conditions. Resistivity can be used to characterize the transformation process of graphite structure, that is, the degree of graphitization. The resistivity of the material is proportional to its thermal conductivity, which is low and high. The degree of graphitization also affects the wettability, lubricity, strength, coefficient of thermal expansion, modulus of elasticity, specific heat and a series of properties of the material, which affect the performance of the mold.

2、 Excellent oxidation resistance: oxidation of stone strength material is the primary source of mold damage. Therefore, the smaller the impurity content of graphite material, the better. The impurities are mainly various metal elements, and most of them play a catalytic role in the oxidation of stone materials. The lower the porosity is, the better the pore size is, especially the open porosity. This is because the oxidation process of graphite is related to the diffusion rate of oxidation gas, which is controlled by the diffusion rate of oxidation gas.

3、 Structure of graphite material: the structure of graphite material should be fine and compact to ensure high bulk density, low porosity and high surface finish of processing die.

4、 . mechanical strength: the mechanical strength is high, especially the tensile strength and compressive strength of the material should be high.

5、 Thermal shock resistance: if the thermal expansion coefficient is small and the thermal conductivity and tensile strength are high, the material's ability to withstand thermal shock can be greatly improved and the material's thermal stability will be better.

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Jiacheng graphite mold manufacturers and you share hope to help you, interested in learning more welcome to call Jiacheng graphite mold, looking forward to working with you!