Abstract: According to existing metallurgical quality issue for production of non-quenched and tempered steel MnVS series including low yield of sulfur, poor casting characteristics and low qualified ratio of steel products in nondestructive testing, with stable sulfur wire feeding speed 80 ~ 100 m/min, using premelted refining slag, slag basicity ≥3. 0 by adding lime in refining and optimizing casting and rolling parameters etc. the average yield of sulfur is up to 84%, carbon segregation extent decreases, first qualified ratio of macro-, micro-structure and heading upsetting of products is respectively up to 100%, 99. 10% and 100%, the products quality and comprehensive properties all meet the requirement of user.

摘要： 针对MnVS系非调质钢生产时存在的硫收得率低、钢水可浇性差、钢材探伤合格率低等冶金质量问题,通过稳定喂硫线速度80～100 m/min,采用预熔精炼渣、精炼配加石灰使渣碱度≥3.0,优化连铸和轧制工艺参数等工艺措施,使硫平均收得率达84%,铸坯碳偏析程度减少,钢材低、高倍组织和顶锻一次合格率分别达100%、99.10%和100%,产品实物质量及综合性能均满足用户需求。