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针对塞棒、上水口吹氩时,吹入的氩气有多少进入到结晶器钢水内和氩气在结晶器断面上如何分布的问题,采用1:1水模型,重点研究了吹气量、吹气方式、拉速、浸入式水口倾角等工艺参数对不同宽度结晶器内气体分布状况的影响。结果表明,吹气量和吹气方式对结晶器内气体分布几乎没有影响,而拉速和水口倾角基本上就决定了宽度方向上的气体分布状况。小的结晶器断面宽度、小的水口倾角、高拉速时窄面附近含气比例更高,氩气泡更易被凝固坯壳所捕捉而使铸坯产生气泡缺陷。
Aiming at the problem of how to distribute the argon in the mold steel and argon gas in the mold section by using the 1: 1 water model, Gas method, casting speed, submerged nozzle angle and other process parameters on the distribution of gas in different widths of the mold. The results show that the amount of air blown and the mode of inflow have little effect on the gas distribution in the mold, while the rate of pulling and the nozzle inclination basically determine the gas distribution in the width direction. Small crystallizer cross-sectional width, small nozzle angle, high rate of gas near the narrow surface near the gas content is higher, argon bubbles more likely to be captured by the solidification of the shell to make the slab bubble defects.