What is the purpose of graphitization of graphite electrodes?Graphitization is a high-temperature heat treatment that heats the calcined product in the protecti
graphite electrodes
What is the purpose of graphitization of graphite electrodes?
Graphitization is a high-temperature heat treatment that heats the calcined product in the protective medium in the graphitization furnace to a high temperature, so that the hexagonal carbon atom planar grid is transformed from the disordered overlap in the two-dimensional space to the ordered overlap in the three-dimensional space, and it has a high temperature heat treatment with a graphite structure. Process. the purpose is:
(1) Improve the thermal and electrical conductivity of the product.
(2) Improve the thermal shock resistance and chemical stability of the product.
(3) Improve the lubricity and abrasion resistance of the product.
(4) Eliminate impurities and improve product strength.
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or