Overview of the production process of the hottest

2022-10-04
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Overview of graphite crucible production process

crucible is a refractory graphite crucible made of crystalline natural graphite as the main raw material and plastic refractory clay as the binder, which is mainly used to smelt special alloy loaded steel and melt non-ferrous metals and their alloys after matching with different types of clinker. In terms of the performance and application of products, graphite crucible is an integral part of refractory materials

crucibles can be divided into three categories: graphite crucible, clay crucible and metal crucible. In the graphite crucible, there are three kinds of common graphite crucible, special-shaped graphite crucible and high-purity graphite crucible. Due to different properties, uses and service conditions, various types of graphite crucibles also differ in raw materials, production methods, process technology and product models and specifications

the main raw material of graphite crucible is crystalline natural graphite. Therefore, it maintains the original physical and chemical properties of natural right ink

that is, it has good thermal conductivity and high temperature resistance. In the process of high temperature use, the coefficient of thermal expansion is small, and it has certain strain resistance to rapid heating and rapid cooling. It has strong corrosion resistance to acid and alkaline solutions and excellent chemical stability

the type of crucible will affect the overall measurement accuracy of the equipment; There are many time numbers and specifications in the test experiment. When applied, it is not limited by the production scale, batch size and the variety of smelting materials. It can be selected arbitrarily, which has strong applicability and can ensure the purity of the melted materials

graphite crucible has the above excellent properties, so it is widely used in the smelting of alloy tool steel and the smelting of non-ferrous metals and their alloys in metallurgy, casting, machinery, chemical industry and other industrial sectors. And has a better technical and economic effect

The types of crucibles are generally divided into three categories: the first type is copper smelting crucible, whose specifications are steel strand and other materials) "No.",; The second type is copper alloy crucible, with 100 numbers for special round and 100 numbers for round. The third type is crucible for steel making, with 100 numbers

the specification (size) of the crucible is usually expressed by the size of the sequence number. Crucible 1 has a capacity to melt 1000g of brass, which benefits all amputees and weighs 180g. When melting different metals or alloys, the melting amount of the crucible can be calculated by multiplying the unit weight specification number of the crucible by the corresponding metal and alloy coefficient

the raw materials for crucible production can be summarized into three types. The first is crystalline natural graphite, the second is plastic fire-resistant

clay, and the third is calcined hard kaolin skeleton clinker. In recent years, high temperature resistant synthetic materials, such as silicon carbide, alumina, Emery and ferrosilicon, have been used as the framework clinker of the crucible. This kind of clinker has a significant effect on improving the quality of crucible products and enhancing the density and mechanical strength of crucible

there are three methods to shape the crucible. The more primitive method is hand molding. The second is rotational molding, and the third is compression molding. (end)

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