Extrusion method of cemented carbide round bar and square material

摘要

The present invention relates to a manufacturing method of a cemented carbide cutting tool material for producing cemented carbide rods and materials of various sizes in an excellent quality and economical manner. In the past, a raw material powder and a binder, which is a palpable wax, Since it is manufactured by the method of completely sintering after re-forming, it is uneconomical due to the loss of metal powder, the limited length of the material is limited, and the quality of the material deteriorates due to the partial density and carbon difference in the long material The present invention is a method of kneading a binder with a raw material powder, a paraffin wax and a carnauba wax, extruding it in an extruder, removing a binder in the material by a heated vaporization burr, and sintering the formed product. Shortening the length of the material and making the material uniform in density without being limited in length It is used as a material, such as a drill, aendeumil, Square tip cutting tools.