Natural graphite crucible usually contains about 50% clay minerals, while the impurity (ash content) of artificial graphite crucible is less than 1%, which is used for refining high-purity metals, and high-purity graphite (ash content <20ppm) after special purification treatment. Artificial graphite crucibles are often used to melt small amounts of precious metals and high-purity metals or high-melting-point metals and oxides. It can also be used as a crucible for gas analysis in steel.

Graphite crucible has high thermal conductivity and the performance is stable at high temperatures, thus maintaining good performance even under high temperature use process. Its thermal expansion coefficient is very small. Shock cooling and shock heating conditions will little impact the performance of crucible. Graphite crucible has superior performance in smelting alloy tool steel, nonferrous metals and other alloys, so it is widely used in metallurgical, casting, mechanical, chemical industries and other industrial sectors. The application of graphite crucibles receives good technical and economic effect. 

The graphite crucibles in our factory have made great progress in both the manufacturing level and the technical level. Our advantages are as follows: 

1. High mechanical density: graphite crucible has strong electrical conductivity due to its high density and mature production process; 

2. Long service life: Because of the special glaze layer on the graphite crucible surface and high molding density of materials, the corrosion resistance of products has been greatly improved, greatly extending the service life of the graphite crucible

3. Advanced graphitization process: graphite crucible product performance has been improved through graphitization. If natural graphite is used for graphitization during the process, the thermal conductivity of the crucible will be enhanced. It is best not to place graphite crucible with high temperature on metal articles with too low temperature right after processing, so as to avoid surface cracking caused by temperature drop.   

When there are many kinds of alloys to be smelted and the quantity is relatively small, the graphite crucible can be used to reach the best smelting effect. The only thing you need to do is to change the graphite crucible for another type of metals to be smelted. Keep in mind that the refractory inside a graphite crucible should be replaced in time when the graphite crucible is used for smelting, or the smelted metal will be easily polluted.   

Graphite crucibles diameters ranging processed by Xingtai Lingte Technology Co., Ltd.:

From 100 mm to 1000 mm, or perform customized processing according to your demands.    

Characteristics of graphite crucible: 

● High thermal conductivity

● High temperature resistance and high corrosion resistance 

● Good chemical stability