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The graphite piping is a combination of non transparent graphite tube and pipe fittings, it can be divided into two kinds of graphite profiling tube and impregnation tube. Graphite profiling tube is made of the graphite powder and a certain proportion of the resin after mixing kneading and extruding, also known as the graphite plastic pipe. Graphite tube is used as heat exchanger tube. The impregnated graphite tube is divided into two categories, one is a thermoset resin graphite profiling tube , it’s got from roasting by high temperature (700 DEG C) and then impregnated with resin or we roast ,graphitiz and impregnate the extrusion pipe which as pitch the binder material. The former is called the carbonization tube, and…
EDM is a new processing technology in machinery manufacturing industry, EDM of many high hardness metal processing, and processing of complex shape, high precision parts, can be used as a tool for the anode copper material, also can use graphite materials. Graphite material used as a tool electrode for electrical discharge machining must have the following conditions: (1) the structure is compact and uniform, and there should not be coarse particles and large pores; (2) has high mechanical strength, and good processing performance, can produce acute, flake shape or complex; ; (3) the graphite electrode, which has a certain loss in the process of EDM, which should be as low as possible; (4) the discharge characteristics are stable and the…
Foundry machinery industry in the extensive use of graphite materials as mould pressure casting, centrifugal casting, super hard alloy hot extrusion processing, to train wheels, small precision parts can be used in graphite mold. The graphite mould can be repeatedly used for many times, and the casting after the mold release has a high degree of finish, and some can be used without further processing. As the graphite casting mould should be compact and low coefficient of thermal expansion of graphite, good oxidation resistance, used for casting the larger size of the graphite can be composed of coarse grains and small precision parts for casting graphite must use the fine particle structure of graphite. China used to manufacture a large…
