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板材的弯曲成形一般有两种:一种是热弯曲成形;一种是冷弯曲成形。在施工中应采用那一种工艺方法,将由工件板厚、弯曲半径的大小和受力的重要程度而定。从节省能源节省工吋和改善劳动条件的观点出发,在弯曲半径符合于材料的塑性;弯曲后不发生裂纹的情况下尽量采用冷弯曲成形。在冷弯曲过程中由于材料的弹性,当工件压力取消后,工件的尺寸和形状发生了和模
There are two types of sheet metal bending: one is thermal bending and the other is cold bending. In the construction should be used that kind of process, will be the workpiece thickness, the size of the bending radius and the degree of importance of the force may be. From the perspective of saving energy and saving working hours and improving working conditions, the bending radius is in accordance with the plasticity of the material; cold bending is preferably used when no cracks occur after bending. In the cold bending process due to the material’s elasticity, when the workpiece pressure is canceled, the size and shape of the workpiece and mold