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本文通过对结瘤炉次进行的统计分析,对结瘤钢样和耐火材料进行的化学分析、电子探针、显微镜鉴定,初步认为:在浇注含钛含铝较高的钢种时,由于大量高熔点的TiN、TiS、TiO_2、Al_2O_3、MnO·Al_2O_3等固体微细质点悬浮于钢中,使钢水变粘稠。这些高熔点悬浮物,在钢水温度下降,静压力降低的情况下,一部分悬挂沉积在冲蚀后粗糙多孔的水口表面。这可能是造成结瘤的重要原因。试验指出:适当控制钢水温度,改变脱氧制度(脱氧剂采用缓慢、分批、交替加入的方法),基本上解决了滑动水口结瘤堵塞问題,保证了含钛含铝较高钢种的顺利浇注,提高了钢质。
In this paper, through the statistical analysis of the nodulation heats, the chemical analysis of the nodular steel samples and refractory materials, electron probe and microscopic identification, it is preliminarily believed that when pouring the steel containing higher content of titanium and aluminum, High-melting TiN, TiS, TiO 2, Al 2 O 3, MnO · Al 2 O 3 and other solid fine particles suspended in the steel, the molten steel becomes thick. These high-melting-point suspended matter, in the molten steel temperature drops, the static pressure decreases, the part of the suspension deposition in the erosion of rough porous surface of the nozzle. This may be an important cause of nodulation. The test shows that: proper control of molten steel temperature, change the deoxidation system (deoxidizer slow, batch, alternately adding method), basically solve the sliding nozzle nodulation blockage to ensure the smooth casting of higher grade aluminum containing titanium , Increased steel.