简介概要

Production of Integrated Automotive Part in High Pressure Diecasting Process Using Salt Core

来源期刊:JOURNAL OF RARE EARTHS2004年增刊第2期

论文作者:Hyun-Kwang Seok Jun-Su Kim Ki-Bae Kim

Key words:salt core; high pressure diecasting; casting part for automotive; fusible core;

Abstract: A new concept of salt core, a melting temperature of which is lower than the solidus temperature of cast alloy,was introduced to produce an integrated casting part having a complicated inner shape or requiring under-cut in high pressure die casting or squeeze casting process. A salt core, named a fusible core in this paper because the salt core can be easily extracted just as holding at a temperature under a solidus temperature of a casting alloy, was developed and applied to produce a fuel control part for automotive GDI engine in high pressure diecasting machine. A different salt material of a lower melting temperature than that of A1 alloy was mixed with a different ceramic particulate to improve a thermo-physical property of fusible core. The thermo-physical property of the fusible core was measured and a weight faction of the ceramic particulate was optimized. The selected core materials were poured in metallic mold by gravity to produce a fusible core for a fuel control part for automotive GDI engine. The fuel control part, which the fusible core was included inside, was successful to fabricate in a conventional diecasting machine with no melting of fusible core during casting.

详情信息展示

Production of Integrated Automotive Part in High Pressure Diecasting Process Using Salt Core

Hyun-Kwang Seok1,Jun-Su Kim2,Ki-Bae Kim1

(1.Advanced Materials Research Center,Korea Institute of Science and Technology,P.O.Box 131,Cheongryang,Seoul,130-650,Korea;
2.Research & Development Center,Technology Union Co.,Ltd,742-1,Paeksok-dong,Chonan-si,Chungchongnam-do,330-220,Korea)

Abstract:A new concept of salt core, a melting temperature of which is lower than the solidus temperature of cast alloy,was introduced to produce an integrated casting part having a complicated inner shape or requiring under-cut in high pressure die casting or squeeze casting process. A salt core, named a fusible core in this paper because the salt core can be easily extracted just as holding at a temperature under a solidus temperature of a casting alloy, was developed and applied to produce a fuel control part for automotive GDI engine in high pressure diecasting machine. A different salt material of a lower melting temperature than that of A1 alloy was mixed with a different ceramic particulate to improve a thermo-physical property of fusible core. The thermo-physical property of the fusible core was measured and a weight faction of the ceramic particulate was optimized. The selected core materials were poured in metallic mold by gravity to produce a fusible core for a fuel control part for automotive GDI engine. The fuel control part, which the fusible core was included inside, was successful to fabricate in a conventional diecasting machine with no melting of fusible core during casting.

Key words:salt core; high pressure diecasting; casting part for automotive; fusible core;

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