Crucibles can be divided into three categories: graphite crucibles, clay crucibles, and metal material crucibles. In graphite crucibles, there are three types: regular graphite crucibles, irregular graphite crucibles, and high-purity graphite crucibles. Various types of graphite crucibles differ in performance, main uses, and application standards, resulting in differences in commonly used raw materials, production methods, production processes, and product specifications and models.

The main raw material of graphite crucible is pure natural graphite in crystalline form. Therefore, it maintains the various physical and chemical characteristics of pure natural ink.

Namely, it has excellent thermal conductivity and heat resistance, and has a small coefficient of linear expansion throughout the high-temperature application process. It has certain strain resistance performance for rapid heating and quenching. Strong corrosion resistance to acid and alkaline solutions, with high-quality organic chemical reliability.

There are many specifications and models of crucibles, which are not limited by production scale, large batch size, and types of smelting chemicals during use. They can be randomly selected, have a strong applicability, and can ensure the purity of the smelting chemicals.

Graphite crucibles, due to their superior performance, are widely used in industries such as metallurgy, forging, mechanical equipment, and chemical plants for the smelting of alloy tool steel, rare metals, and aluminum alloys. And it has good practical effects in safety engineering.

The types of crucibles can be roughly divided into three categories: the first type of copper smelting crucible, with its specification and model number,; The second type is a copper crucible for alloy smelting, with a special ring having one hundred numbers and a ring having one hundred numbers. The third type is a crucible for iron smelting, with one hundred numbers.

The specification and model (size) of the crucible are usually indicated by the serial number size. The second crucible has a capacity to melt 1000g of copper, and its net weight is 180g. When smelting different metal materials or aluminum alloys, the melting amount of the crucible can be calculated by multiplying the density specification and model number of the crucible by the relative metal material and aluminum alloy index.

The raw materials for the production and manufacturing of crucibles can be classified into three categories. One is pure natural graphite with crystalline structure, and the other is ductile fire resistance

Clay is a hard kaolin type framework cement clinker that has undergone calcination. In recent years, heat-resistant composite materials have gradually been chosen, such as carbon carbon composite materials, alumina alumina and silicon iron, as framework cement clinker for crucibles. This type of cement clinker has a significant effect on improving the quality of crucible products, increasing the relative density and impact toughness of crucibles.

There are three ways to form a clamp pot, and the oldest method of forming is hand molding. The second method is rotary molding, and the third method is compression molding