Tungsten Copper Process — Deformation Processing (2/2)

The related researchers adapted different proportions of tungsten-copper alloy (W-20Cu, W-30Cu, W-40Cu) products after infiltrated for cold rolling and intermediate annealing at the deformation process, each pass compression 5% -10%, up to 50% of the total final amount of deformation. Wherein the amount of deformation <25%, the material is only deformed in copper; when the amount of deformation reaches 50%, tungsten materials began to stretch along the rolling direction. Some foreign scholars sintered density of the obtained tungsten copper W-40Cu material extrusion, hot forging and cold forging obtained after tungsten copper rod; a sintered density of only 75% of the tungsten copper plate W-40Cu after cold rolling billet can be made of tungsten copper sheet; and cold rolled billet, and then cold-rolled, cold drawing was also prepared tungsten wire having a diameter of 0.3mm of material.

This deformation after machining tungsten copper alloy has fully dense tissue, mechanical strength and excellent electrical and thermal conductivity, which can be widely used in many areas of application and to meet different needs. Compared with cold deformation processing, hot deformation process refers to the metal under the recrystallization temperature of the plastic deformation, the common processing methods includes bending forging, hot pressing and pulling molding. Different from cold deformation processing (Since the process breaking the original balance of forces inside the metal, resulting in the release of stress, the original force balance is broken and the deformation, which does not reach yield point of the metal material), metal hot deformation processing has plastic deformation and reaches the yield point of the material. However, it is difficult to control the processing temperature, which can not ensure the structure and comprehensive properties of tungsten copper completely.

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