Relationship between solid fraction and
distribution of Pb in Al-Pb ingot
distribution of Pb in Al-Pb ingot
(1. Department of Mechanical Engineering,
Tsinghua University, Beijing 100084, P.R.China;
2.Metal Forming Department, Northeastern University,
Shenyang 110006, P.R.China;
3.Department of Metal Forming,
University of Science and Technology Beijing,
Beijing 100083, P.R.China;
4.Anshan Automobile Fittings Factory,
Anshan 114014, P.R.China)
Tsinghua University, Beijing 100084, P.R.China;
2.Metal Forming Department, Northeastern University,
Shenyang 110006, P.R.China;
3.Department of Metal Forming,
University of Science and Technology Beijing,
Beijing 100083, P.R.China;
4.Anshan Automobile Fittings Factory,
Anshan 114014, P.R.China)
Abstract: The influence of solid fraction of Al-28Pb alloy mushy on distribution of Pb in Al-Pb ingot was studied. The special electromagnetic stirring apparatus was used to prepare Al-28Pb alloy mushy and the relationship between solid fraction and stirring temperature was gotten. The results show that when solid fraction of Al-28Pb alloy mushy is less than 45%, Pb precipitation usually happens in the ingot. However, Pb precipitation in casting reduces gradually with increasing solid fraction of mushy, and when solid fraction is larger than 45%, Pb precipitation in casting can be removed.
Key words: Al-28Pb alloy; solid fraction; stirring temperature; alloy mushy