60Si2MnA spring steel must has good metallurgical quality,surface quality,metallographic structure and so on.The production process of spring steel wire rod is introduced,in the process of converter smelting,average value of tapping carbon content is no less than 0.12%;in the LF refining process,the basicity of slag is controlled from 1.5 to 2.5;in the VD vacuum degassing process,the total vacuum time is no less than 20 min;in the continuous casting process,the superheat degree is controlled to be 20 ～ 30 ℃,the casting speed is controlled 1.6 ～ 1.9 m/min,the stack cooling time is no less than 24 h;the process control parameters of heating furnace are given;reducing sizing temperature control is no more than 880 ℃,wire laying temperature is no more than 860 ℃,the roller speed is 0.16 ～0.30 m/s.The wire rod is analyzed and the result shows:the inclusions mainly belong to B and D type,inclusion leveling no more than 1.5 grade,decarburization depth is no more than 1.0％D,the properties indexes meet the requirements of the users for producing oil quenching and tempering spring wire.%60Si2MnA弹簧钢必须具有良好的冶金质量、表面质量、金相组织、尺寸精度.介绍了弹簧钢盘条生产工艺,转炉冶炼过程中,平均出钢w(C) ≥0.12%;LF精炼过程中,炉渣碱度控制在1.5 ～2.5;VD真空脱气过程中,总真空时间≥20 min;连铸过程中,控制过热度20～30℃,拉速控制1.6～ 1.9 m/min,堆冷时间不少于24 h;给出加热炉工艺控制参数;减定径温度控制≤880℃,吐丝温度≤860℃,辊道速度0.16 ～0.30 m/s.对盘条进行分析,结果表明:夹杂物主要以B类、D类为主,夹杂物级别≤1.5级,脱碳层深度≤1.0%D,各项性能指标均达到用户生产油淬火回火弹簧钢丝的要求.
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