| 摘要 |
PURPOSE:To produce a blank for producing a powder sintered article of precision shape. CONSTITUTION:A raw material powder obtained by mixing a binder soln. with metallic and/or sintering powders is formed into the blank shape, the solvent is vaporized to obtain a powder caked blank 4 having a low content of the binder, the blank is fixed to a precision three-dimensional working machine such as an engraving machine and a three-dimensional working robot controlled by a computer through a chuck 5 and precision-worked by a cutting tool 6, and the blank is degreased to remove the binder and then sintered. Consequently, the blank is smoothly fixed to the working machine and precision-worked since the blank is appropriately strengthened by the binder, the blank is not shrunk or warped in degreasing because the binder content is low, and a precision sintered article is obtained. |
