低压铸坯是继连铸坯之后,又一钢坯生产新工艺。其优点不仅是缩短生产过程,大幅度节约能源,提高金属收得率,而且产品具有良好的强度和塑性,各向异性也很小,所以六十年代以来,此法在欧美各国应用日广。笔者对低压铸造圆坯进行了比较系统的试验研究,试图为我国圆管坯供应探索新的途径。 1.试验情况试验钢种有35号钢、45号钢,铸坯外径为90～140mm,先后共试验32炉约100t左右。正常铸坯表 Low-pressure billet is the second billet after the production of a new process. Its advantage is not only to shorten the production process, save energy, improve the metal yield, and the product has good strength and plasticity, anisotropy is also very small, so since the sixties, this method is widely used in Europe and the United States. The author of the low pressure casting round billet for a more systematic experimental study, trying to supply our country round tube to explore new ways. 1. Test conditions Test steel with 35 steel, 45 steel, slab diameter of 90 ~ 140mm, a total of 32 furnaces were tested about 100t. Normal billet table