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对汽车板提高连浇炉数到10炉后钢水洁净度及耐火材料使用情况进行现场工业试验,分析了10炉连浇浇铸过程中T[O]、钢水中[N]质量分数变化,夹杂物分布情况,并对浇铸后耐火材料使用情况进行了分析。研究结果表明,开浇第1炉T[O]质量分数控制在28×10~(-6),[N]质量分数为18×10~(-6),T[O]平均质量分数为28.1×10~(-6),整体控制较好;[N]质量分数控制稳定在17.2×10~(-6)左右。开浇第一炉夹杂物数量并不多,第1炉达到6.46个/mm~2,最后1炉夹杂物分布情况为9.06个/mm~2,整体控制水平较好。10炉连浇后塞棒及中间包工作层厚度耐火材料均可满足现场工艺要求。
On-board industrial tests were conducted to improve the cleanliness of molten steel and the use of refractories after the number of continuous casting furnaces in the automobile plate was increased to 10 and the changes of T [O], [N] mass fraction in the molten steel and the inclusions Distribution, and the use of refractories after casting were analyzed. The results show that the mass fraction of T [O] is 28 × 10 -6, the mass fraction of [N] is 18 × 10 -6, the average mass fraction of T [O] is 28.1 × 10 ~ (-6), the overall control is better; [N] mass fraction control is stable at about 17.2 × 10 ~ (-6). Casting the first furnace inclusions is not much, the first furnace to 6.46 / mm ~ 2, the last furnace inclusions distribution of 9.06 / mm ~ 2, the overall level of control is better. After the 10 furnace pouring stopper and tundish working layer thickness of refractory materials can meet the site requirements.