Technical method for producing isostatic pressure graphite

Abstract

The invention provides a technical method for producing isostatic pressure graphite, which comprises the following steps: using refinery coke or pitch coke as raw materials; crushing raw materials to 5 to 20 mum through airflows; then, carrying out treatment through work procedures such as primary mixing squeezing and sheet milling, extrusion forming, fast carbonization, crushing, sieving, secondary mixing squeezing and sheet milling, crushing, sieving, pre-forming, isostatic pressure forming, calcination, impregnating, graphitization and the like; and obtaining fine particle isostatic pressure isotropical graphite materials. Compared with traditional coarse particle graphite materials, the invention has the characteristics of fine and compact structure, good uniformity, excellent mechanical property, isotropy and the like, and is particularly suitable for the production of large-specification graphite products.

Description

technical field [0001] The invention relates to a manufacturing method of a graphite material, in particular to a process method of an isostatic isotropic graphite material with excellent mechanical properties. Background technique [0002] Graphite material has the characteristics of high temperature resistance, corrosion resistance, self-lubrication, etc., and has been widely used in many fields. With the development of science and technology, various application fields have put forward higher requirements for the performance of graphite materials. Graphite materials are usually prepared by using calcined coke as aggregate carbon and modified pitch as binder, after mechanical mixing, molding, carbonization, impregnation and graphitization heat treatment. However, in the above process, more than one-third of the binder decomposes and volatilizes during the roasting process, resulting in a difference in volume shrinkage between the filler and the binder, which eventually re...

AI Technical Summary

Problems solved by technology

However, in the above process, more than one-third of the binder decomposes and volatilizes during the roasting process, resulting in a difference in volume shrinkage between the filler and the binder, which eventually results in graphite materials with high porosity, poor structure uniformity, Disadvantages such as obvious interfaces, resulting in lower mechanical strength of the final material

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