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采用较便宜的Nb和Mn代替部分昂贵的V,优化了生产用钢成分。对比分析了实验用钢B和生产用钢A的组织、析出和力学性能,并通过ANSYS/LS-DYNA非线性有限元软件对实验钢进行精轧3道次的模拟。结果表明,采用Nb和Mn代替部分V后,实验钢B力学性能满足挡圈性能要求,B钢的析出强化作用低于生产用钢A,但可通过细晶强化和固溶强化来弥补析出强化的降低,因此两种钢的强度相差较小。B钢晶粒尺寸较小,其伸长率高于A钢。另外,孔型充填情况良好,满足现场轧制需求。研究结果能为实际生产低成本车轮挡圈型钢提供理论依据。
The use of cheaper Nb and Mn instead of some expensive V, optimizing the production of steel components. The microstructure, precipitation and mechanical properties of experimental steel B and production steel A were compared and analyzed, and the finishing steel 3 passes were simulated by ANSYS / LS-DYNA nonlinear finite element software. The results show that the mechanical properties of experimental steel B meet the performance requirements of retaining ring when Nb and Mn are used instead of part V. The precipitation strengthening effect of B steel is lower than that of production steel A, but the precipitation strengthening can be compensated by the fine grain strengthening and solid solution strengthening Of the decrease, so the strength of the two kinds of steel less difference. B steel smaller grain size, its elongation is higher than the A steel. In addition, the hole filling is good, to meet the needs of on-site rolling. The results can provide theoretical basis for the actual production of low-cost wheel retaining ring steel.