| 摘要 |
PURPOSE:To perform sintering with high accuracy without being accompanied by strain during sintering, in sintering a human body implant having good corrosion resistance composed of Ti, Ta, TiAlV, CrCo stainless steel or the like, by filling a mold with a selectively conditioned powder to mold said powder in a state heated to a temp. at the highest not easily generating the reaction of the mold in contact with the powder and the surrounding gas. CONSTITUTION:The cavity formed by fitting lower and upper molds 4, 5 in a cylindrical mold 3 is filled with a sintered powder 6. The powder 6 is selected from such a viewpoint that there is corrosion resistance and no toxicity non harmfulness is shown in a living body and Ti or a Ti alloy is utilized or two or more kinds of metals are compounded before use. The upper mold 5 is pressed to the powder 6 in the cavity of the molds by the pressurization of a cylinder 7. At the time of press molding, the filled powder 6 is heated by a heating means such as a coil so as to be easily molded and it is important to control heating temp. so that the powder 6 is not reacted with the surrounding molds 3, 4, 5 and air and the heating temp. is controlled to an optimum degree according to the kind of the sintered powder 6. |
