• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1993, Vol. 29 ›› Issue (4): 55-59.

• 论文 • 上一篇    下一篇

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减少铸造有色合金偏析的新途径

边秀房;李辉;马家骥   

  1. 山东工业大学
  • 发布日期:1993-07-01

NEW TECHNIQUE IMPROVING SEGREGATIONS IN NON-FERROUS CAST METALS

Bian Xiufang;Li Hui;Ma Jiaji   

  1. Shandong Polytechnic University
  • Published:1993-07-01

摘要： 介绍了一种减少有色铸造合金偏析的新的工艺措施——热速处理。通过该工艺，Pb-Sb合金，Al-Cu合金铸件的宏观偏析和微观偏析现象大大减轻；亚共晶Pb-8%Sb合金微观偏析系数K，由0.056变为0.635。从液体结构决定偏析状况的理论出发，探讨了新工艺减少偏析的机理。

关键词: 锅锑合金, 金属液, 快速凝固合金, 偏析

Abstract: The new technique improving segregations in non-ferrous cast metals is called Thermal-Rate Treatment. By the technique, the microsegregation and microsegregation in Pb-Sb and Al-Cu alloys are greatly improved. The micresogregation coefficient K, of hypoeutectic Pb-8%Sb alloy changed from 0.056 into 0.635 after treatment by the technique. The mechanism of the new technique to improve the segregations has been studied according to the theory that the structures of liquid metals are related to the segregation.

Key words: Metal liquid, Pb-Sb alloy, Repid solidification alloy, Segregation

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