| 摘要 |
PURPOSE:To provide a process for production for producing powder sintered parts having precise shapes. CONSTITUTION:A binder is mixed with sinterable powder of metals and/or ceramics to form a raw material 1 for sintering. This raw material for sintering is molded by press molding, etc., to form a blank shape molding 2. This blank shape molding is subjected to a treatment to solidify the binder to obtain a powder solidified blank 3 contg. 0.5 to 20vol.% binder. This powder solidified blank is mounted via a chuck 8 to a computer-controlled precision three- dimensional working machine, such as engraving machine or three-dimensional working robot, and is subjected to precision working, by which a precision worked body 4, such as, for example, an artificial femur joint bone head 10, is formed. Finally, this precision worked body is subjected to binder removal to form the body 5 removed of the binder. This body is sintered to form sintered parts 6. As a result, the powder solidified blank has adequate strength to permit smooth mounting V the working machine and precision working. The precision sintered parts, such as, for example, the complete roundness artificial femur joint bone head, are obtd. of the body is subjected to precision working. |
