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利用40tVOD精炼炉脱碳冶炼00Cr13Ni4Mo超低碳马体不锈钢.通过合理控制炉内参数得到,吹氧时炉内真空度在26660Pa左右,停吹氧时真空度在7998Pa;开吹温度控制在1600℃左右,停吹温度在1750～1800℃左右;开吹时提高供氧强度至570Nm3·h-1左右,吹炼后期降低供氧强度至550Nm3·h-1左右,可以避免铬的大量氧化;控制氧枪高度在75mm;开吹供氩强度控制在48.4NL3·min-1,提高低碳区供氩量至117.5NL3·min-1,用以加快钢包内钢水环流速度.
Using 40tVOD refining furnace decarburization smelting 00Cr13Ni4Mo ultra-low carbon horse stainless steel obtained through reasonable control of the furnace parameters, the oxygen blowing furnace vacuum at about 26660Pa, stopping blowing oxygen vacuum at 7998Pa; blowing temperature control at 1600 ℃ , The stop-blowing temperature is about 1750-1800 ℃; the oxygen supply intensity is increased to 570Nm3 · h-1 at the time of blowing, and the oxygen supply intensity is reduced to 550Nm3 · h-1 at the late stage of blowing to avoid the massive oxidation of chromium; Oxygen lance height is 75mm; open argon supply intensity is controlled at 48.4NL3 · min-1, and the argon supply in low carbon area is raised to 117.5NL3 · min-1 to speed up the steel circulation velocity in the ladle.