Technical guide
Blanking separates the material (outlines, holes, slots); cold forming – bending and deep drawing – changes the shape of the sheet without separating it. Burrs, tears, wrinkles and springback are the typical defects, and they are prevented above all at the die design stage.
Quick answer
Blanking separates the material (outlines, holes, slots); cold forming – bending and deep drawing – changes the shape of the sheet without separating it. Burrs, tears, wrinkles and springback are the typical defects, and they are prevented above all at the die design stage.
| Burrs | Correct cutting clearances and sharp cutting edges (WIDIA, sintered steels) |
|---|---|
| Tears | Adequate radii and forming steps |
| Wrinkles | Blank holder and stage sequence |
| Springback | Compensation in the design and restriking |
Since 1969, we have been designing and building sheet metal dies in Rosà (VI): feasibility study with the customer, 3D CAD design, construction in our own toolroom and tryout with dimensional inspection. UNI EN ISO 9001:2015 certification by TÜV SÜD.
Yes, in progressive and transfer dies the stations combine blanking and forming.
With a pilot die before the final die.
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Bean Force
Up to 10× the force of a spring, from the bottom up, in a few centimetres. For press tools, high-pressure valves, seismic dissipators for racking and steel structures and wherever more force is needed.
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