Enclosed Type

Lengzha open-book leveling line defect in the material

by：Transon 2020-10-29

Lengzha open-book leveling line material of defects in longitudinal curl, horizontal warping, distortion and edge rocker phenomenon. Rolled in the pick-up, curled will lead to the longitudinal and transverse defects. At the end of the inner surface of the coil relative to the outer surface of the rolling material to produce a vertical extension. The longitudinal extension will cause material lateral contraction, resulting in a horizontal eagerly. In its broad material defects embodied in wavy edge concave and convex, coil crack and center. Wavy edge and center of concave and convex tend to occur on a wide and thin material. In pick-up in the process of cold rolling mill of defect can also cause material cross section on the thickness of the part is lower than other places. Therefore, thinner parts slightly longer than thicker material, which makes in the region of the long wave. This article reprinted from laser cutting machine

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