BUP sheet metal testing machines
With the ZwickRoell BUP sheet metal testing machine, different tests and typical test methods up to 1000 kN can be performed.
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The Swift deep drawing cup test is a method used for the determination of sheet metal forming properties. The test is also referred to as limiting drawing ratio test or LDR test.
The limiting drawing ratio (LDR) test evaluates the deep drawability of sheet metals. It indicates the maximum ratio of circular blanks to the diameter of the die, by deep drawing the blank into a cup, without crack formation.