Selected articles from January 2007 issue published on TheFabricator.com:
Energy input at one location in a part during forming is redistributed throughout the part as the forming process advances. The result must be an adequate force transmitted back to the location of target strains and displacements.
Cutting shear, or the angle ground into the end of a punch, has a big effect on punch deflection and breakage, as well as press tonnage required. Retainers, which hold the punch to the die shoe, also are important. The backing plates, ball lock punch retainers, and headed styles of punches and retainers all require careful consideration.
Compared with cold-formed parts, hot-stamped parts provide better formability at high temperatures and exhibit no springback on the final part.
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