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金属塑性变形抗力对预测塑性成形时的载荷,选用设备、确定合理的模具结构,选用工具材料,制订最佳工艺规范等都是不可缺少的重要依据。特别是温塑性成形的温度范围内(对钢一般在室温以上至850℃以下)的变形抗力,过去的研究资料不多,本文对10钢,45钢,40Cr钢,GCr15钢,G8Cr15钢,ICr18Ni9Ti钢和Ti6Al4V钛合金等七种材料,在通用的机械压力机上用均匀压缩的方法进行了实验研究。变形程度ε_F采用50％和30％二种,变形温度有室温300℃,400℃,500℃,600℃,700℃,800℃和850℃所得实验结果建立了K_f—t℃—ε_F关系曲线,并通过数学分柝计算建立了数学模型,为实际应用提供可靠依据。
Metal plastic deformation resistance Plastic forming load forecasting, selection of equipment, to determine a reasonable mold structure, selection of tool materials, development of the best process specifications are all indispensable important basis. In particular, the plastic deformation temperature range (the steel is generally above room temperature to 850 ℃ or less), the deformation resistance, the previous research is limited, the 10 steel, 45 steel, 40Cr steel, GCr15 steel, G8Cr15 steel, ICr18Ni9Ti Steel and Ti6Al4V titanium alloy seven kinds of materials, in a common mechanical press with uniform compression method of experimental study. The deformation degree ε_F was established by using 50% and 30% of the two kinds of deformation temperature at room temperature 300 ℃, 400 ℃, 500 ℃, 600 ℃, 700 ℃, 800 ℃ and 850 ℃ experimental results obtained K_f-t ℃ -ε_F curve, Mathematical model is established by mathematical division, which provides a reliable basis for practical application.