摘要
阐述了ML40Cr冷镦钢生产情况,对采用氧气顶吹转炉→LF钢包精炼炉→小方坯连铸→高速线材轧制生产的冷镦钢盘条进行了综合检验分析.结果表明,生产的10 mm盘条金相组织为铁素体+珠光体,晶粒度9～10级;钢中A、B、D类非金属夹杂物的级别分别为0.5级、1.0～1.5级和1.5～2.0级,单位面积内当量直径5μm的夹杂物个数为20～22个/mm2,夹杂物平均直径为3.656～3.891μm,夹杂物含量相对较少,夹杂物尺寸相对比较细小;轧材的综合力学性能良好,同时具有良好的塑性变形能力,可以满足标准件生产要求.
Production of ML40Cr cold heading wire rod coils was described.Cold heading wire rod produced by the process of basic oxygen furnace → LF ladle refining furnace → billet continuous casting→ high-speed wire rolling was tested.The microstructure of the produced wire rod with diameter of 10 mm was ferrite and pearlite,the grain size was grade 9 to 10.The non-metallic inclusion grades of A,B,D type are 0.5,1.0~1.5 and 1.5~2.0 respectively.The amount of inclusion with equivalent diameter of 5 μm was 20~22 entries/mm2,which is considered to be relatively less and fine,and the average diameter of inclusion was 3.656~3.891 μm.Based on the excellent combined mechanical properties and plastic degeneration ability,it is considered that the produced cold heading wire rod is satisfied for the requirements of standard parts production.
出处
《材料与冶金学报》
CAS
2011年第3期164-167,共4页
Journal of Materials and Metallurgy
基金
国家自然科学基金资助(51074039)
