2331 銅合金のセミソリッド鋳造(S30 半溶融・半凝固加工の最先端)

概要

論文の詳細を見る
In order to develop a new semisolid casting process for Cu-Sn and- Cu-Ni -alloys, an inclined cooling plate was used. Molten copper alloys containing 1.5 to 8.0-Sn mass and 1.5 to 9.0 mass% Ni%-are poured onto the inclined cooling plate, and numerous primary copper crystals are generated on the plate's surface. These crystals then move with the molten alloy into a permanent mold, where small copper crystals become granular in the mold maintained at the isothermal holding conditions. As a result, fine and granular crystal structures are obtained. The crystal size decreased proportionally to the amount of Sn and- Ni added to copper until 3 mass%, after which the crystals size remained constant at 78μm. The finest grain size, 65μm, is obtained by casting at liquidus temperature +30K, and by using a 300mm cooling plate inclined at 60 degrees.
一般社団法人日本機械学会の論文
2005-09-18