The deformation brings great inconvenience to welding or internal assembly. <br>If the deformation is too large, we must reshape the workpiece to meet the requirements of the subsequent process. <br>But this kind of deformation is very difficult. <br>In order to reduce the amount of shaping as much as possible, it is necessary to analyze the cause of this kind of deformation when a qualified cylinder is rolled at one time. And take appropriate measures to prevent or make up and eliminate.
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