Si Content Change in A356.2 Aluminum Alloy Melted by Tower Melting Furnace

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Si Content Change in A356.2 Aluminum Alloy Melted by Tower Melting Furnace
Vol. 30, Issue 11, Pages: 1045-1047(2010)
Published： 2010 ，
DOI：

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[1]刘宏磊,梁勇,刘智峰.塔式熔炼炉熔化A356.2铝合金中Si含量变化分析[J].特种铸造及有色合金,2010,30(11):1045-1047+978.

Si Content Change in A356.2 Aluminum Alloy Melted by Tower Melting Furnace. [J]. Special Casting & Nonferrous Alloys 30(11):1045-1047(2010)
[1]刘宏磊,梁勇,刘智峰.塔式熔炼炉熔化A356.2铝合金中Si含量变化分析[J].特种铸造及有色合金,2010,30(11):1045-1047+978. DOI：

Si Content Change in A356.2 Aluminum Alloy Melted by Tower Melting Furnace. [J]. Special Casting & Nonferrous Alloys 30(11):1045-1047(2010) DOI：

摘要

通过对A356.2合金在塔式熔炼炉熔化过程中Si含量的变化的分析

揭示了铝液中Si含量发生周期性波动的原因

并进行了对比试验和生产验证。结果表明

铝液中Si含量发生有规律的变化

其原因在于A356.2合金锭中存在Si成分偏析及塔式熔炼炉的特殊结构。验证了熔化区合金中的Si含量与保温区合金中的Si含量之问存在差异

对此提出了有效的预测和控制措施。

Abstract

Origination of periodical change of Si content in liquid aluminum alloy was described by analyzing Si change in A356.2 aluminum alloy melted by tower melting furnace.Comparative experiment and practical production were conducted.The results reveal that periodical change of Si content in the liquid A356.2 alloy is attributed to composition segregation of Si phase in the A356.2 ingot and special structure of tower melting furnace.Difference of Si content in melting stage and in holding stage was verified

and countermeasures were presented.