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SWRH77A和ZGMn13钢中氢含量测量
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Abstract:
本工作针对两种具有重要用途的钢种SWRH77A盘条帘线钢和ZGMn13，用载气热萃取法测定了不同凝固条件下的氢含量。发现随着冷却速率的增加，氢在材料中的溶解程度增加，从而导致氢含量增加。在相同凝固条件下，氢在铸造耐磨钢ZGMn13中的含量比SWRH77A中要大。通过使用冷却速度更快的铸铁模具，测得的氢含量也可以作为液态合金中的氢含量的参考。
In this work, the hydrogen content under different solidification conditions was measured by car-rier gas thermal extraction method for two kinds of steel grades with important applications, SWRH77A wire cord steel and ZGMn13. It is found that with the increasing of cooling rate, the de-gree of dissolution of hydrogen increases, resulting in an increase in hydrogen content. Under the same solidification conditions, the content of hydrogen in cast wear-resistant steel ZGMn13 is higher than that in SWRH77A. By using cast iron molds with faster cooling speed, the measured hydrogen content can also roughly reflect the hydrogen content in the liquid alloy.
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