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английский) 2:
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When wire drawing hole diameter drawplates each time decreases.
Punching sheet metal includes forging, bending and trimming.
Small deformation of the sheet under tension helps to retain the new shape of the part.
Reshaping when punching is performed by compressing between two dies.
The sheet edges during punching are cut to obtain the final dimensions.
When forging detail must be hot to reduce the effort required and increase the ductility of the metal.
After forging, closed-die parts do not require much machining.
With the minting of metal deformation is small and the imprint formed on the metal surface.
The landing is used to make the heads of nails and bolts.
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