The invention steel, tie tyanyum such as a refractory material or of aluminum, magnesium-steel, is used to the friction stir tool for the welding of different materials, such as titanium, a spark plasma sintering process, a high density, in a short time by a single fixed by using the high-strength , high toughness and high wear resistance of friction stir welding having a tulyong tungsten carbide-cobalt relates to a sintered body manufacturing method.
The present invention in accordance with the friction stir welding tulyong tungsten carbide-cobalt sintered body manufacturing method is tungsten carbide powder and cobalt powder mixing a mixed powder to carbide ball and alcohol mixture to high-strength stainless steel container to a sealing for sealing step, a sealing said high-strength stainless and the drying step of drying in a vacuum oven the mixed pulverized powder, dry mixed and pulverized to the pulverization step and inserted into the energy ball milling apparatus for the vessel to the mixed and pulverized, to remove the alcohol contained in the mixed milled powder the powder and the filling step of filling a mold with a graphite material, and a mounting step of mounting the filled mold the mixed pulverized powder in the chamber of a spark plasma sintering apparatus, evacuating step of evacuating an interior of the chamber, and a molding step of molding a product by keeping the pressure constant in the mixed pulverized powder in the mold temperature of the above were mixed and pulverized powder, and then after they are heated in the forming step mixing powdered tungsten carbide in the mold-cobalt sintered lowering the pressure while maintaining the pressure at the lowest pressure (10MPa) and a cooling step for cooling the interior of the chamber.