国内外易切削钢的现状和研究进展

易切削钢比普通碳素钢有较好的切削性能和更好的产品表面光洁度。随着自动化加工工业和汽车工业的发展,易切削钢的使用量不断增加。目前,国外普遍采用电弧炉二次精炼连铸流程生产易切削钢。工业化国家切削钢已形成标准化系列产品,并伴随连铸技术的广泛采用,使易切削钢具有均匀的切削性能。现有易切削钢种为易切削碳钢、渗碳钢、调质钢和不锈钢,并不断将易切削钢扩展到诸如模具钢、高锰钢、耐热钢、高工钢等钢类。在分析国内外易切削钢发展的基础上,讨论了易切削钢生产工艺、钢种的发展方向。

Present Status and Development of Research on Free Cutting Steel at Home and Abroad

The cutting ability of free cutting steel is better than that of common carbon steel to get better surface degree of finish of products. With developing of automobile industry, the consumption of free cutting steel continuously increases. At present, the cutting steels are wide produced by flow sheet of arc furnace- secondary refining- concasting in abroad. The standardized series products of free cutting steel have been developed and with wide using concasting technology, the free cutting steels have uniform cutting properties. Now the grades of free cutting steel include free cutting carbon steels, carburizing steels, quenching and tempering steels and stainless steels, and steadily add to the steel grades of die steels, high manganese steels, heat resistant steels and high speed and tool steels. Base on the development of free cutting steel at home and abroad, the development trend of production process and steel grade.