关键词: 易切削钢, 冶金工艺, , 进 展

Abstract: 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- concocting 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.