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Machine translation
1. (WO1980001656) DIE-CASTING METHOD AND APPARATUS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001656    International Application No.:    PCT/JP1979/000033
Publication Date: 21.08.1980 International Filing Date: 14.02.1979
IPC:
B22D 17/00 (2006.01), B22D 17/10 (2006.01), B22D 27/11 (2006.01)
Applicants:
Inventors:
Priority Data:
JP79/00033 14.02.1979 WO
Title (EN) DIE-CASTING METHOD AND APPARATUS
(FR) PROCEDE DE COULEE SOUS PRESSION ET APPAREILLAGE
Abstract: front page image
(EN)A die-casting method and apparatus adapted to be used for production of, for example, housing members of compressors, pumps or the like, wherein a molten metal injected into a forging die cavity (30) may be applied with pressure through a location other than an injection port. This invention has for its object to improve the sliding property of a plunger (36) for applying the forging pressure. The pressure plunger (36) is slidably fitted in a pressure sleeve (35) which has an enlarged portion (35a), said pressure plunger (36) being also provided with a reduced portion (36d), so that the pressure plunger (36) may be smoothly moved with the solidified metal layer being kept in the minute gap formed between the pressure sleeve (35) and the pressure plunger (36). Thus, the flash of the solidified metal layer is prevented from clogging in a portion between the pressure sleeve (35) and the pressure plunger (36), so that the sliding movement of the pressure plunger (36) is kept normal.
(FR)Procede de coulee sous pression et appareillage utilises pour la fabrication de pieces de batis de compresseurs, pompes ou leurs analogues, dans lequel un metal fondu injecte dans une cavite de forgeage par matricage (30) peut subir l"application d"une pression par un emplacement autre que celui de l"orifice d"injection. L"invention a pour objet l"amelioration des proprietes de glissement d"un piston (36) servant a appliquer la pression de forgeage. Le plongeur a pression (36) coulisse dans un manchon de pression (35) qui possede une partie elargie (35a) ledit piston (36) etant egalement pourvu d"une partie reduite (36d) afin que le piston (36) puisse etre deplace sans a coups avec le metal solidifie restant dans l"espace minime forme entre le manchon de pression (35) et le piston (36). Ainsi, la couche de metal solidifiee est empechee d"obturer l"espace entre le manchon de pression (35) et le piston (36) afin que le mouvement de coulissement du piston reste normal.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)