论文部分内容阅读
一、前言从七十年代开始,国外就开始了对 Cr-ack Free Steel(简称 CF 钢)的研制。其中以日本发展得最快,它较为成熟的钢号有:新日本制铁公司的 WEL—TEN 60 CF和 WEL—TEN62CF;日本钢管公司的 NK—HITEN60U 和 NK—HITEN62U;神户制钢公司的 K—TEN62CF;川崎制铁所的RIVER ACE 60A,RIVER ACE62A、住友金属公司的 SUMITEN60F、SUMITEN62F。CF 这类钢主要是通过低碳微量多元合金化和调质处理来获得低碳当量(Ceq<
I. Preface From the seventies, foreign countries began the research and development of Cr-ack Free Steel (referred to as CF steel). Among them, Japan has the fastest growing steel grades. The more mature steel grades include WEL-TEN 60 CF and WEL-TEN 62CF from Nippon Steel Corporation, NK-HITEN 60U and NK-HITEN 62U from Nippon Steel Corporation, K -TEN62CF; RIVER ACE 60A, RIVER ACE 62A from Kawasaki Steel Works, SUMITEN 60F, SUMITEN 62F from Sumitomo Metal Industries, Ltd. CF steel is mainly low-carbon micro-alloying and quenching to achieve low carbon equivalent (Ceq <