节能低成本高品质非调质钢的研发

 结合近年来国内外的发展趋势，从化学成分的精确稳定控制、硫化物控制，前轴、半轴和胀断连杆等典型零部件用非调质钢的开发，及非调质钢的长疲劳寿命化技术等方面对中国近年来非调质钢的部分研发工作进行了综合论述。为了进一步提高非调质钢的技术经济性，非调质钢的少无微合金化元素的低成本化、精确成分和尺寸控制是其中的重要发展方向。此外，随着冶金生产和零件制造技术的不断进步，为了替代调质处理的合结钢等以制造更多的保安件，具有更高的强韧性配合的贝氏体型非调质钢必将得到更多的应用。

Research and Development of Energy-Saving High Performance Microalloyed Forging Steels

Some of the research, development and applications of microalloyed steels for forging and bar products in China in recent years were summarized, concentrating mainly on precision chemical controlling, sulfide controlling, and typical steel products for automobile forgings components such as front axle, semi-axle, fracture splitting connecting rod and service lifetime increasing. It suggests that the development of cost saving medium carbon forging steel with no or less microalloying element, precision chemical elements and bar size controlling are some of the main trends for the purpose of further increasing the performance and cost balance of the steel products. Furthermore, with the development of modern metallurgy technology and component manufacturing technology, more applications of microalloyed bainitic forging steel with high strength and high toughness will be used for the production of steering and driving components.