应用炼钢过程中夹杂物控制的热力学模型预测钢包精炼和钢液凝固后钢中氧化物夹杂的成分,在模型预测指导下进行了自润滑易切削钢工业生产试验,并对开发的易切削钢进行了切削性能测试.结果表明,钢中氧化物夹杂预测结果与实测结果一致;用无涂层P1O刀具进行的切削试验结果也表明,与传统含铅易切削钢相比,自润滑易切削钢在高速(v≥200 m/min)切削条件下,后刀面磨损降低200%;切削速度v=100 m/min时,二者相当;v=200 m/min时,前刀面月牙洼磨损降低200%,且月牙洼离刀刃较远.说明在高速切削条件下,开发的新一代自润滑易切削钢的切削性能明显优于传统含铅易切削钢,完全可替代传统含铅易切削钢.
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