一、概述由于钢一般是在大气气氛中冶炼,所以钢中必然含有氢、氧、氮等有害气体。采用通常加脱氧剂的办法来脱氧,所生成的氧化夹杂物也难免有不少残留于钢中。正是这些气体和夹杂物往往使钢产生种种缺陷。人们为了消除钢中的有害气体和夹杂物,增添有益成份,不断地进行了各方面的努力。利用真空处理来达到上述目的是这 First, an overview As the steel is generally smelting in the atmosphere, so the steel must contain hydrogen, oxygen, nitrogen and other harmful gases. Deoxidation is usually carried out by adding a deoxidizer, and the oxide inclusions generated are inevitably left with a lot of residue in the steel. It is these gases and inclusions that often give rise to defects in the steel. People in order to eliminate the harmful gases and inclusions in steel, add useful ingredients, continue to carry out all aspects of efforts. This is achieved using vacuum treatment