Numerical Simulation of Inner Vacuum Sucking Method
Hydrogen is the only gas that is appreciably soluble in aluminum and its alloys. Its solubility is small but its effects on the mechanical properties and finishing characteristics of aluminum alloys are significant. In this paper, a patented degassing process, which is based on the vacuum metallurgy principle, is proposed. A porous head that is connected with a vacuum system is immersed in the molten aluminum. The vacuum is started within the porous head and the dissolved hydrogen atom will diffuse directionally towards the head according to Sieverts law, and is removed by the vacuum system. The Ficks diffusion equation was used for explaining hydrogen transfer in the molten aluminum under the function of vacuum. RPT experiment was carried out to evaluate effectiveness of the new degassing process. The experiment indicates that the hydrogen content can be dramatically reduced to as low as the level of 0.05ml/100gAl by the use of this new process.
Jianmin Zeng Caimin Huang Diehong Zhang
Key Lab.Of Nonferrous Materials and New Processing Technology, Guangxi University,Nanning, P.R.China Key Lab.of Nonferrous Materials and New Processing Technology, Guangxi University, Nanning, P.R.Chin
国际会议
桂林
英文
1-5
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）