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本钢采用铁水预处理-120t转炉吹炼-LF精炼-4.8t铸锭-800轧机流程生产Φ150mm的热锻用非调质钢48MnV(%:0.42~0.47C,0.98~1.18Mn,0.06~0.10V,0.008~0.035S,≤0.025P).LF精炼时加N-Mn合金调整钢中N含量,吹氩,精炼后喂Si-Ca线.经分析,钢材中氢含量(0.6~1)×10-6,氧含量(8~15)×10-6,氮含量(108~149)×10-6,轧材的力学性能为抗张强度σb815~880MPa,屈服强度σs4