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对300 t RH真空处理前钢中氢含量的影响因素进行分析,得出转炉原辅料加入量的影响很小,湿度有一定的影响,合金加入量影响最大。对300 t RH真空3种模式下的脱氢工艺进行分析研究,结果表明:本处理钢种,可以根据真空度的高低,合理控制处理时间,RH脱氢效果十分显著,RH处理结束w(H)达到2×10~(-6)以下,脱氢率可达70%~80%;轻处理和脱碳钢种,处理前w(H)较低,只要严格控制合金加入时机,RH处理结束w(H)都能稳定达到1.3×10~(-6)以下,脱氢率可达10%以上。
The influence factors of the hydrogen content in the steel before 300 t RH vacuum treatment were analyzed. It was concluded that the influence of the raw materials of the converter on the hydrogen content was small and the humidity had a certain influence, and the alloy addition amount had the greatest impact. The dehydrogenation process in three modes of 300 t RH vacuum was studied. The results showed that: the treatment of steel species, according to the level of vacuum, the reasonable control of treatment time, RH dehydrogenation effect is very significant, RH treatment end w (H ) Reaches below 2 × 10 -6, the dehydrogenation rate can reach 70% ~ 80%; light treatment and decarburization steel, before treatment w (H) is low, as long as the timing of the alloy is strictly controlled, RH treatment is completed w (H) can reach 1.3 × 10 ~ (-6) or less, and the dehydrogenation rate can reach more than 10%.