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对受拉伸弯曲带材在第1个弯曲辊上的弯矩卸载阶段进行了分析，结果表明带材在第一个弯曲辊上拉伸弯曲后产生的残余曲率相当大，必须在后续的计算中予以考虑．同时，对带材拉伸弯曲过程中各种中性轴、中性轴之间的关系及其在带材中的位置变化情况进行了讨论，明确指出了受拉伸弯曲带材的第1次弯曲和第2次弯曲的不同点．对受拉伸弯曲带材的多次弯曲时的纵向延伸计算进行了讨论．
The bending moment unloading phase of the tensioned bent strip on the first bending roller was analyzed. The results show that the residual curvature of the strip after stretching and bending on the first bending roller is considerable, and must be calculated in the following calculation Be considered. At the same time, the relationship between the neutral axis and the neutral axis in the process of drawing and bending of the strip and its position change in the strip are discussed. It is pointed out clearly that the first The difference between the bend and the second bend. The calculation of the longitudinal extension of a multi-flexurally stretched strip is discussed.