Calculation of Hydrogen Solubility in Al-Melt under Vacuum Condition

Qin Yiming; Zhuang Linzhong; Meng Zhibao; Chen Zhennan; Tang Xin

doi:10.15980/j.tzzz.2020.10.019

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Calculation of Hydrogen Solubility in Al-Melt under Vacuum Condition
Vol. 40, Issue 10, Pages: 1131-1134(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.10.019

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[1]秦颐鸣,庄林忠,蒙志保,陈贞南,唐鑫.真空条件下铝液中氢溶解度的计算[J].特种铸造及有色合金,2020,40(10):1131-1134.

Qin Yiming, Zhuang Linzhong, Meng Zhibao, et al. Calculation of Hydrogen Solubility in Al-Melt under Vacuum Condition. [J]. Special Casting & Nonferrous Alloys 40(10):1131-1134(2020)
[1]秦颐鸣,庄林忠,蒙志保,陈贞南,唐鑫.真空条件下铝液中氢溶解度的计算[J].特种铸造及有色合金,2020,40(10):1131-1134. DOI： 10.15980/j.tzzz.2020.10.019.

Qin Yiming, Zhuang Linzhong, Meng Zhibao, et al. Calculation of Hydrogen Solubility in Al-Melt under Vacuum Condition. [J]. Special Casting & Nonferrous Alloys 40(10):1131-1134(2020) DOI： 10.15980/j.tzzz.2020.10.019.

摘要

模拟计算了重力场和真空条件耦合作用下H溶解度随着铝熔池深度的变化。结果表明

H溶解度随着熔池深度和温度的降低而降低

随着真空度的提高而降低

而理论计算值均低于实际的H溶解度

可能是因为熔池深度方向H浓度不均匀或者存在H2气泡。通过控制真空度、熔池深度

可以控制铝液的H溶解度至较低范围。给出了铝液H溶解度低于0.2mL/100g时的真空度、熔池深度的理论控制范围。

Abstract

The effects of molten pool depth on H solubility in Al-melt under the coupling of gravity and vacuum condition were calculated.The results reveal that the H solubility is decreased with the decrease of molten pool depth and temperature and the increase of vacuum degree

while the H solubility for theoretical calculation were lower than that in actual measurement

which may be attributed to the uneven H concentration in the depth direction and the existence of H-gas bubbles.By controlling the degree of vacuum and the depth of molten pool

the lower H solubility can be achieved

and the theoretical range of the vacuum degree and the bath depth of Al-melt is suggested for the H solubility less than 0.2 mL/100 g.