PRODUCTION METHOD OF GEOMETRIC OXIDE COMPACT

PROBLEM TO BE SOLVED: To provide a production method of a novel geometric oxide compact.SOLUTION: In a production method of a geometric oxide compact, a charging chamber is arranged in a metal mold bore that is guided from an upper part to a lower side by a perpendicular bore axis B through a die material, while a position of a lower part punch is maintained, an upper part punch is lowered, an axial direction starting distance A of two edge faces is reduced along the bore axis B to a prescribed axial direction end distance E for compaction, the upper punch is raised from a formed geometric molding precursor after the compaction, the lower part punch is raised thereby the geometric molding precursor is removed from the metal mold bore, the charging chamber is separated at least by an inner wall or the like of the metal mold bore, further, while at least one gaseous compound is formed, at least one part of a component of the molding precursor is decomposed, an oxide geometric compact is formed, and the die material is a hard metal that comprises 80 mass% or more of rigid material tungsten carbide and at least 5 mass% of metal property binder nickel. 【課題】新規な幾何学的酸化物成形体の製造方法の提供。【解決手段】充填チャンバが、垂直ボア軸Ｂによって上部から下方へ金型材料を通して導かれる金型ボア内に配置され、下部ポンチの位置を維持したまま上部ポンチを下降させ、ボア軸Ｂに沿って２つの端面の軸方向開始距離Ａを、圧密化のための所定の軸方向端部距離Ｅに減少させ、圧密化終了後、形成された幾何学的成形前駆体から上部ポンチを上昇させ、下部ポンチを上昇させることにより金型ボアから幾何学的成形前駆体を除去し、充填チャンバが少なくとも、金型ボアの内壁等によって区切られ、さらに、少なくとも１種の気体化合物を形成しながら、成形前駆体の成分の少なくとも一部が分解され、酸化物幾何学的成形体が形成され、金型材料が、８０質量％以上の硬質材料炭化タングステンと少なくとも５質量％の金属性結合剤ニッケルとから成る硬質金属である。【選択図】なし