The Graphite crucible has good thermal conductivity and high temperature resistance. It has the resistance property to strain for quick heating and cooling and its thermal expansion coefficient is small in the process of high temperature. It has good corrosion resistance to acid and alkaline solution and good chemical stability. the graphite crucible is widely used in the melting of alloy tool steel and non-ferrous metal and its alloy smelting, and has a good technical and economic effects in metallurgy, casting, machinery, chemical and other industrial sectors.
At present, there are two kinds of production processes of graphite crucible in China: plastic forming process and cold isostatic pressing forming process. the plastic forming process which as the clay the adhesive has a long production cycle, high labor intensity, low efficiency, coal burning, severe pollution, many Chinese manufacturers use this process because of less investment now, and the isostatic pressing technology equipment using clean energy natural gas sintering, it solves the problem of pollution fundamentally and reduce the the production process of nearly 10, short cycle, high efficiency.
Our company can supply the following types of crucible at present:
The main components of graphite crucible are natural flake graphite and adhesive, so it has the advantages such as fast heat conduction, high temperature resistance, good thermal stability and no reaction with the melt, it’s the non-ferrous metal casting container. it is ideal for the melting of aluminum, copper and other metals.
Quartz crucible has the advantages of high purity ,high temperature resistance, with big size ,good thermal insulation, economization on energy ,quality stability etc.
Fused quartz crucibles are used in the manufacture of silicon metal for semiconductor wafer applications and polysilicon.
Silicon carbide crucible, we make it from putting the silicon carbide particles which in different content inside the raw material of the graphite crucible, such as the content is 50%, there are 24%, there are other different content, of course, it can also be customized according to the different requirements of customers.
Porcelain/Ceramics/Corundum crucibles are used in laboratory testing.