当前,冶金工业的主要任务是降低钢铁产品的成本。以前是从改善钢的性能,使其符合用户越来越复杂的要求作为开发研究的主要方向,而目前对成本比对质量更加关注。由于必须控制成本,所以对微量合金钢产生了极大的兴趣,因为此种钢产品对生产厂家和用户在经济上都有好处。虽然微合金化的使甩有将近三十年的历史,此类钢的生产和应用却十分有限。在西 Currently, the main task of the metallurgical industry is to reduce the cost of steel products. In the past, the main direction of development and research was to improve the performance of steel and make it comply with the increasingly complicated requirements of users. At present, the cost versus the quality is more concerned. Due to the need to control costs, there has been a great deal of interest in microalloyed steels because such steels are economically beneficial to manufacturers and users alike. Although microalloyed for about three decades, the production and use of such steels has been limited. In the west