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Qingdao Tennry Carbon Co.,Ltd is the professional manufacturer for graphite products.Mainly engaged in manufacturing,researching and selling graphite products,the advanced production line,testing room form the full researching and testing system with advance facilities and complete procedure.
The roasting process is actually a process in which the green body is carbonized into a binder coke through heat treatment. That is, the pressed green body is placed in a roasting furnace, and the air is insulated for heating. The binder undergoes a series of physical and chemical reactions at a certain temperature to form a certain thickness of coke film on the surface of the carbon aggregate. Through the binder coke, the carbon powder particles and the particles are connected into a whole with certain mechanical strength and physical and chemical properties.
The purpose of impregnation is to fill the pores and open pores in the aggregate coke particles with impregnants such as molten pitch. After secondary roasting, the porosity or ventilation porosity is reduced, and at the same time, the billet’s Density, strength, modulus of elasticity, linear expansion coefficient, or can improve corrosion resistance and wear resistance, reduce gas and liquid permeability, improve conductivity, etc.
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