With the wide application of graphite products, theGraphite crucibleIt has the advantages of high temperature resistance, heat shock resistance, corrosion resistance, oxidation resistance, less metal pollution, etc. It is deeply used in precious metal smelting and analytical instrument industry. Let's briefly introduce the materials and characteristics of graphite crucibles.
The materials of graphite crucible can be generally divided into artificial graphite, graphite clay material and graphite silicon carbide material. The artificial graphite crucible is made of graphite electrode material.
Graphite clay crucible is mainly composed of natural flake graphite and clay. Now it is only used when cast iron, cast steel melt at high temperature and precious metals melt at a small amount.
The crucible made of graphite silicon carbide is mainly composed of natural flake graphite and silicon carbide. Crucibles made of this material are used for most of the melting of non-ferrous metals such as copper alloys and aluminum alloys. At present, the demand for graphite silicon carbide crucibles accounts for about 97% of the total.
Graphite crucibles have taken as many measures as possible in terms of raw materials and manufacturing to meet the use under Cruel conditions.
The main characteristics are listed as follows:
(1) high thermal conductivity: due to the use of graphite and other raw materials with high thermal conductivity, the melting time is shortened;
(2) thermal shock resistance: it has strong thermal shock resistance and is not easy to crack for rapid cooling and heating;
(3) high heat resistance: high fire resistance, 1200 ~ 1600 ℃ high temperature;
(4) corrosion resistance: strong corrosion resistance to molten soup;
(5) resistance to mechanical impact: it has a certain strength against mechanical impact (when molten materials are put into use, etc.);
(6) oxidation resistance: graphite is easy to oxidize at high temperature in the oxidation mist, and the oxidation consumption is less due to the oxidation prevention treatment;
(7) anti adhesion: because graphite is not easy to adhere to molten soup, the penetration and adhesion of molten soup are less;
(8) very little metal pollution: there is very little metal pollution because there is no impurity mixed into the polluted molten soup;
(9) impact of slag collector (slag remover): it has good impact performance of slag collector (slag remover).
& nbsp; & nbsp; & nbsp; The above are the characteristics of the graphite crucible and the material of the graphite crucible. I believe you can choose a more suitable one according to your own useGraphite crucible
