论文部分内容阅读
针对冷封顶镇静钢液芯轧制中,有一部份不能实现液芯轧制的实际情况而提出的新研究课题。采用钢锭在液芯状态下翻倒90°,然后进行模似凝固轧制的方法,研究了缩孔的分布,偏心率等。对封闭缩孔焊合的影响。通过模拟钢锭钻眼轧制的方法得出:缩孔偏心率对封闭缩孔焊合有显著影响;缩孔大小、压下规程对其亦有影响,从而提出铸后在铸车上或在均热炉内带液芯将钢锭翻倒90°的设想。通过现厂对冷封顶A_3,D_(21)镇静钢的工业实验,用对比的方法,证实了带液芯翻倒对钢材内部质量的影响。实验表明,封闭缩孔得到了焊合,钢材质量满足了国家标准。
In the cold-sealed roof, there are some new research topics that can not be realized in the actual situation of the liquid-core rolling. Using ingot tilting 90 ° in the state of the liquid core, and then the method of the like solidification rolling, the study of the distribution of shrinkage cavities, eccentricity and so on. The impact of closed shrinkage welding. Through simulation of ingot rolling method, the shrinkage eccentricity has a significant effect on closed shrinkage welding. The size of shrinkage cavity and the rules of pressing down also affect it, Assuming that the ingot is tilted by 90 ° with a liquid core in the furnace. Through the factory on the cold top A_3, D_ (21) killed steel industrial experiments, with a comparative method, confirmed the liquid core overturned on the internal quality of steel. Experiments show that closed shrinkage has been welded, the quality of steel to meet the national standard.