Method for obtaining material properties and method for manufacturing press-formed products

Abstract

The present invention provides a technology that enables easy and accurate acquisition of material properties that affect the dimensional accuracy of presses, even within a press line.The method for acquiring material properties of a metal plate for press working involves performing a stretching process on the metal plate, measuring the forming load and die stroke during the stretching process, and measuring the thickness of the metal plate, and then determining the yield stress of the metal plate from the measured forming load, die stroke, and thickness.

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