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What are the damages of graphite electrode to humans?
May 21,2019January 10, 2019
Graphite electrode materials have the advantages of soft texture, good thermal conductivity and high temperature resistance, and are widely used. Taking the mold industry as an example, graphite has gradually replaced the advantages of low electrode consumption, fast processing speed, high temperature resistance and high processing precision. Copper electrode has become the mainstream of processing electrode. In addition to ordinary machining, high-precision and high-efficiency high-speed machining technology is widely used in graphite processing. What are the damages of graphite electrode to humans?
Graphite is a kind of heterogeneous brittle material with microscopic defects, which is characterized by structural inhomogeneity, porosity and brittleness, which has an important influence on the processing of its materials. Studies at home and abroad have shown that graphite material machining is very different from metal materials: metal materials are obtained by plastic deformation to obtain strip or knot cutting to achieve material removal; while graphite materials are generated by brittle fracture to form chipping chip particles. Or dust to achieve.
Graphite dust has a great impact on the service life and machining accuracy of machine tools and tools. If graphite dust enters the main shaft, it will cause unstable clamping, shorten tool life, increase machining surface roughness, increase downtime, and reduce workpiece machining dimensional accuracy and spindle bearing service life. Machine tools generally have protective covers made of transparent materials for observation during processing. If the graphite dust smear protective cover will reduce the visibility, affecting the operator's line of sight, resulting in increased waste.