FIELD: metallurgy.
SUBSTANCE: stamping is performed in two stages. In this case, the first intermediate moulded article is produced on the first stage, using the first stamping device for the drawing. The first stamping device contains the matrix die, the workpiece holder and the punch. On the second step of stamping by bending, the end product is produced from the intermediate moulded product. The second stamping device, containing the punch, the cushion and the die for pressing the first intermediate product onto the punch.
EFFECT: buckles and cracks formation on the workpiece flanges is reduced.
8 cl, 13 dwg
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