Design technology for producing side-stacked section materials

Abstract

The invention discloses a design technology for producing side-stacked section materials. Through rolling of an upper roller and a lower roller, bending deformation of the section materials in a hole pattern of a roller of each pass is carried out according to the preset angle, the numerical values of circular beads of the section materials are increased in the deformation process, the section materials keep a large circular bead before final side-stacking formation, approximate-parallelism rolling of the two sides of the section materials is completed, and filleted corners are flattened after rolling is completed. The internal stress of the circular beads of deformation is basically released in the last pass but one, finally sides of the large circular bead compensate for the two sides of the small circular bead through material compensation, and therefore the dimensional accuracy is not influenced, the side warping problem is effectively solved, and a mature technology improvement is realized.

Description

technical field [0001] The invention discloses a process for producing folded profile. Background technique [0002] In the open cold-formed profiles, due to the needs of use, it is often encountered in the case of overlapping, such as figure 1 shown. When designing this type of profile in the past, there will always be edge warpage in the final rolled profile, such as figure 2 As shown, his molding process is as follows image 3 As shown in the figure, it is gradually bent from 0° to the completion of folding. Because there is no R angle inside the folded profile, the R angle is very small during the entire deformation process. The most critical step before the completion of folding is almost no inner angle. After the edge is completely folded, the two sides are stacked inside the roll due to the external force. Since all the internal stress of the two straight sides is concentrated in the fillet during the deformation process, the internal stress is small because the f...

AI Technical Summary

Problems solved by technology

When designing this type of profile in the past, there will always be edge warpage in the final rolled profile, such as figure 2 As shown, his molding process is as follows image 3 As shown in the figure, it is gradually bent from 0° to the completion of folding. Because there is no R angle inside the folded profile, the R angle is very small during the entire deformation process. The most critical step before completing the folding is almost no inner angle. After the edge is completely folded, the two sides are stacked inside the roll due to the external force. Since all the internal stress of the two straight sides is concentrated in the fillet during the deformation process, the internal stress is small because the fillet is small. The relative increase until the rolling is completed and the internal stress is released after cutting, the result is edge warping, and how to solve this technical problem has always been a technical problem

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