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公开(公告)号:US06216521B1
公开(公告)日:2001-04-17
申请号:US09358929
申请日:1999-07-23
IPC分类号: B21D2500
摘要: Process for improving planeness of a metal sheet, in which the sheet is stretched between two jaws for a period of time, applying a controlled permanent elongation of greater than 0.5%. Transverse pressure is applied on at least one face of the sheet during at least part of the period time during which stretching is applied with at least one longitudinally movable roll, or with a metal bar clamped to an opposite face of the sheet.
摘要翻译: 使金属板的平面度提高的方法,其中片材在两个夹爪之间拉伸一段时间,施加大于0.5%的受控永久伸长率。 在至少一部分时间段期间,在片材的至少一个面上施加横向压力,在该时间段期间,使用至少一个可纵向移动的辊或者夹在板的相对面上的金属棒进行拉伸。