Workpiece's spring-back is considered in this paper, deformation's history is assured in the next pass, and then square rectangle tube in continue roll forming process lay a foundation.
文中考虑了轧件的弹复，保证了下一道次变形历史的延续，从而为真实模拟方矩形连续辊弯成形过程奠定基础。
Cold-roll void forming sheet is an important product in cold-roll forming sheet, which usually includes pipe, square tube, rectangle tube and unusual tube made by special requirements.
冷弯空心型钢是冷弯型钢中的一类重要产品，其通常包括圆管、方、矩形管以及按照特殊要求制作的异形管。
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