The impregnation tank shall be prepared according to the specification of the graphite die. The impregnation tank can be made of various materials according to the actual use. However, it is necessary to use materials with anti-acid corrosion, good sealing, no liquid infiltration, certain hardness and good durability.

If the size of the graphite mold to be processed is relatively small, we can use the method of painting. So that there is no need to use the impregnation tank and the impregnation solution. Simply apply the antioxidants evenly on the surface of the graphite rotor for 2 to 3 times. Pay attention to painting as slowly as possible, so that the impregnation solution can be more fully penetrated into the pores of graphite mold. 

Soak the graphite mold in the impregnation agent for about half an hour at room temperature and atmospheric pressure. If the antioxidation effect needs to be improved, the impregnation agent can be penetrated into the pores of the graphite mold by means of decompression impregnation. 

Place the impregnated graphite mold in a well ventilated place for natural drying for about 2 to 3 days.

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