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一、前言碱性平炉钢真空碳脱氧工艺(简称 VCD法),是解决大型优质锻件冶金质量的一种新工艺,即根据碳的脱氧能力随着真空度的提高而增强的道理,使未经脱氧的沸腾钢水,在真空条件下仅依靠钢水中的碳来脱氧,以达到钢水完全脱氧的目的。VCD 法的脱氧产物是一氧化碳气体,在真空下被抽走,不污染钢液,提高了钢的纯洁度,使钢的疲劳强度、塑性和冲击韧性相应提高。
I. Introduction Alkaline flat hearth steel vacuum carbon deoxidation process (referred to as VCD method), is to solve large metallurgical quality forgings a new technology, that is, according to carbon deoxidation ability with the vacuum to enhance the truth, so that without Deoxidized boiling molten steel, deoxidation only rely on the carbon in the molten steel under vacuum conditions, in order to achieve the purpose of complete deoxidation of molten steel. The deoxygenation product of VCD method is carbon monoxide gas, which is pumped away under vacuum and does not pollute molten steel, which improves the purity of steel and increases the fatigue strength, ductility and impact toughness of steel accordingly.