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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P10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。
The thermodynamic model of inclusions control in steelmaking process was used to predict the composition of inclusions in the steel after ladle refining and liquid steel solidification. Under the guidance of the model predictions, the industrial production tests of self-lubricating free cutting steel were carried out. The developed cutting steel The cutting performance test was carried out. The results show that the prediction results of oxide inclusions in steel are consistent with the measured results. The results of cutting tests with uncoated P10 tools also show that compared with the conventional lead free cutting steel, m / min), the flank wear is reduced by 200%; when the cutting speed is v = 100 m / min, the two are equivalent; when v = 200 m / min, the wear on the rake face is reduced by 200% Wa away from the blade far. The results show that the cutting performance of a new generation of self-lubricating free-cutting steel developed at high-speed cutting conditions is obviously better than the traditional lead-free cutting steel, which can completely replace the traditional lead-free cutting steel.