论文部分内容阅读
由于5356铝合金塑性较差,连铸时易发生“拉断”现象,很难直接连铸出直径不大于12 mm的连铸坯。为实现焊丝用5356连铸坯精细成形,对5356铝合金连铸的实验装置设计、熔体处理以及连铸工艺参数等方面进行了研究,采用三因素三水平正交试验研究了铝合金液温度、连铸速度和氮气充气压力对连铸坯的影响。结果表明:连铸速度是影响连铸坯表面质量的最主要因素。通过正交试验得出了最佳工艺参数为铝合金液温度780℃,连铸速度30mm/min,充气压力0.03MPa。
Due to poor ductility of 5356 aluminum alloy, continuous casting prone to “pull off ” phenomenon, it is difficult to directly cast a continuous casting slab diameter of not more than 12 mm. In order to realize the fine forming of 5356 continuous casting billet, the experiment design of 5356 aluminum alloy continuous casting, melt processing and continuous casting process parameters were studied. The liquid temperature of aluminum alloy was studied by three-factor and three-level orthogonal experiment , Continuous casting speed and nitrogen inflation pressure on the slab. The results show that continuous casting speed is the most important factor affecting the surface quality of slab. Through the orthogonal experiment, the optimum technological parameters are as follows: aluminum alloy liquid temperature 780 ℃, continuous casting speed 30mm / min, inflation pressure 0.03MPa