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板带材在受到第一次拉伸弯曲作用后的残余曲率仍然很大是不能忽略的,因此连续拉弯矫直机延伸率的分析必须分段进行。对于两弯一矫中延伸率的计算,可以通过分析第一次正弯和反弯时板带材应力应变的变化情况,结合板形缺陷、剩余弯曲曲率和张力损耗的影响,分段推出重要的工艺参数延伸率,并给出总的延伸率计算公式。
The residual curvature of the strip after being subjected to the first tensile bending can not be neglected. Therefore, the analysis of the elongation of the continuous draw straightening machine must be carried out in stages. For the calculation of the elongation in two-bend-one-turn, the stress-strain changes of the first strip and the second bend can be analyzed in combination with the influence of the plate-shaped flaw, the residual bend curvature and the tension loss, Process parameters of elongation, and gives the total elongation of the formula.