180t转炉开发高等级汽车锻件用钢42CrMo-1工艺

Development of Steel 42CrMo-1 for High Grade Automobile Forgings by 180 Tons Converter

采用180 t转炉-LF-RH-350 mm×470 mm矩形坯连铸机开发高等级汽车锻件用钢42Cr Mo-1。化学成分利用窄带严格控制,使氧含量≤1.3×10-5,过热度≤22℃,并利用电磁搅拌、动态轻压下技术。结果统计的20炉成品汽车锻件用钢平均氧含量为1.1×10-5,晶粒度为7级,各项物理性能均达到高等级锻件用钢要求。

Development of high grade Automotive Forgings Using 180 tons steel mm ＊ 470-LF-RH-350 ＊ mm steel 42 Cr Mo-1. Chemical composition using narrowband strictly controlled, so that the oxygen content is less than or equal to 1.3 ＊ 10-5, heat is less than or equal to 22 degrees centigrade, and the use of electromagnetic stirring, dynamic soft reduction technology. Results the average oxygen content of the steel in the 20- furnace of the- furnace is 1.1 ＊ 10-5, the grain size is 7, and the physical properties of the furnace are high- grade forgings.