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利用圆柱坐标系的连续速度场推导出圆管等壁空拉拔制力的计算式。实践证明,拔制力理论计算值与实测值相比,其相对误差在工程允许的误差范围之内。该计算式可用于圆管空拉拔制力计算。
Using the continuous velocity field in the cylindrical coordinate system, the formula for calculating the drawing force of the wall tube is deduced. Practice has proved that the draw force theoretical calculated value compared with the measured value, the relative error within the allowable error within the project. The formula can be used to calculate the drawing force of round tube.