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半固态合金流变铸造的研究进展
引用本文:毛卫民,陈军,白月龙.半固态合金流变铸造的研究进展[J].特种铸造及有色合金,2004(2):4-8.
作者姓名:毛卫民  陈军  白月龙
作者单位:1. 北京科技大学
2. 福建三明钢铁公司
基金项目:国家重点基础研究发展(973)规划项目(G200006702-3),国家 86 3计划项目(G2002AA336 0 80),国家自然科学基金项目(50 374 0 1 2)
摘    要:总结了30余年来半固态合金流变铸造的研究和应用现状。介绍了传统机械搅拌式流变铸造工艺,由于其所制备的半固态合金浆料保存、输送麻烦,至今没有进入实际应用;评述了射室制备浆料式流变铸造工艺技术,其生产的压铸件经T6处理,力学性能与挤压铸件相当,但伸长率提高很多;介绍单、双螺旋流变射铸工艺,其特点是利用液态合金原料生产成本低,铸件气孔率低,但其所需设备和生产工艺还处在优化阶段;重点介绍了低过热度倾斜板浇注式流变铸造、低过热度浇注和弱机械搅拌式流变铸造的工艺特点和核心思想;分析了半固态合金流变铸造的发展前景。

关 键 词:流变铸造  半固态  合金
文章编号:1001-2249(2004)02-0004-05
修稿时间:2003年10月16

Research Progress in Semi-solid Alloy in Rheocasting Technology
Mao Weimin Bai Yuelong.Research Progress in Semi-solid Alloy in Rheocasting Technology[J].Special Casting & Nonferrous Alloys,2004(2):4-8.
Authors:Mao Weimin Bai Yuelong
Abstract:The research and application status of semi-solid al lo y rheocasting in about latest 30 years were surveyed. So far due to the storage a nd transport for prepared semi-solid slurry with difficuties, the conventional mechnical stirring technology cann't still be put into industrial practice. The slurry preparation in injection chamber was introduced. Tensile strength of ca s tings treated by T6 in rheocasting was equivalent to that of castings in squeezi ng casting while the elongation was much higher. Although the single or double s cre w rheocasting injection was characterized by short process, low production cost and low gas porosity, the equipment and technology still need to be optimized. T he technological features and essential principle of tilting plate pouring with low superheated alloy as well as low supreheated alloy with slightly mechanical stirring in semi-solid rheocasting were emphatically discribed combined with the prospec t analysis.
Keywords:Rheocasting  Semi-solid  Alloy  
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