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材料变形阻力是热加工过程中影响轧制力能参数基本因素之一。由于在变形过程中,加工条件与变形区参数的变化,影响钢的变形阻力。采用理论公式精确计算变形阻力是比较困难的。作者在凸轮试验机上进行了低碳钢、含 Ti 低合金钢在高温下变形阻力测定。在试验过程中对各个影响因素进行控制,得到了一系列真应力—真应变曲线。通过对试验结果进行深入分析,按钢种建立了变形阻力数学模型。同志式相比,在相同情况下精度提高9%。试验结果更符合武钢钢种情况。
Material deformation resistance is one of the basic factors that affect the rolling force parameters during hot working. Due to the deformation process, the processing conditions and the deformation zone parameters, the impact of deformation resistance of steel. It is more difficult to calculate the deformation resistance accurately by theoretical formula. The authors conducted a cam test machine on the deformation resistance of low carbon steel, Ti-containing low alloy steel at high temperature. In the test process to control the various factors, has been a series of true stress - true strain curve. Through in-depth analysis of the test results, the mathematical model of deformation resistance is established according to the type of steel. Compared with the gay type, the accuracy is improved by 9% under the same conditions. The test results are more in line with the situation of Wuhan Steel.