摘要
研制了一种铝合金熔体净化新型熔剂ＪＤＮ－Ｉ。分析了该熔剂发生作用的机理，实验结果表明，同无熔剂覆盖相比，通过发生一系列的物理和化学反应，ＪＤＮ－Ｉ熔剂可使 Ａ３５６和 Ａｌ９９．９熔体在 ７２０℃时的含氢量分别由 ０．３０ ｍＬ/１００ｇＡｌ下降到０．０９ｍＬ／１００ｇＡｌ和从０．２５ｍＬ／１００ｇＡｌｇ下降到０．１４ｍＬ／１００ｇＡｌ，而在７００℃时的含氢气量分别由０．１８ｍＬ／ｌ００ｇＡｌ下降到０．０８ｍＬ／１００ｇＡｌ和从０．１９ｍＬ／１００ｇＡｌ下降到０．１２ｍＬ／１００ｇＡｌ，除气效果显著。
The degassing effect of a new flux JDN -I containing RE compounds was investigated. The experimental results indicate that in comparison with by no flux, by covering the flux on the melt at 720℃ ,the hydrogen content of A356 melt has been decreased from 0.30mL /100gAl to 0.09mL /100gAl and that of A199.9 melt from 0.25mL/100gAl to 0. 14ml/100gAl, and at 700℃ ,the hydrogen content of A356 melt has been decreased from 0.18mL/100gAl to 0.08mI/100gAl and that of A199.9 melt from 0.19mL /100gAl to 0.12mL /100gAl. The degassing mechanism of the flux has been aslo discussed simply.
出处
《轻合金加工技术》
CAS
2001年第9期13-15,17,共4页
Light Alloy Fabrication Technology
基金
国家重点研究开发规划项目-973专项(G1999064900)。
关键词
铝熔体
铝合金
熔体净化
熔剂
除氢
A356 alloy
Al99.9
rare earth flux, hydrogen content
