摘要
对于冷拔钢材生产中的某典型产品，用不同直径的原料和不同锥角的模具进行实验。根据测得的拉拔力，用非线性回归进行参数估计，对上界法拉拔应力计算公式进行了修正，提高了拉拔力预报的精度．
The experiments of the typical product in com-drawing steels have being carried out with different diameter raw materials and different angle dies.According to the drawing force data,we have made a parameter estimate with the nonlinear regression,revised the upper-bond method formula of drawing stresses calculation,improved the forecast precision of drawing forces.
关键词
拉拔
拉拔应力
模具
锥角
冷拉拔
s:Drawing,Drawing Stresses
Die's Conical-Angle
