For the production of isostatic graphite products, the performance of the once impregnated product is far from meeting the performance requirements that the isostatic graphite products should have.

Therefore, in order to improve the physical and chemical indicators of isostatic graphite products, the impregnated graphite products must also be repeatedly baked and impregnated.

This method is also called multiple impregnation-baking process, which is a widely used method to improve the physical and chemical performance of isostatic graphite products. The more the number of impregnation, the tighter the surface of the graphite product and the less pores on the surface.  

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