Erichsen cupping test
Erichsen cupping test
-according to DIN 50101, ISO 20482, ...-
One of the world's best-known test methods for sheet metal, patented as early as 1913 by the founder of our company, is the Erichsen cupping test.
The Erichsen deep-drawing test is used to determine the stretch-forming capacity of sheet metals in accordance with (DIN EN 10139 and DIN EN 10130), which have a thickness of 0.1 mm to 2 mm and a width of 90 mm or more.
Deep drawing (stretch forming) is the name given to the deformation process of a sheet metal under biaxial stress. The sheet is deformed with a rigid tool.
The sheet to be tested is clamped between the sheet holder and the die and formed with a hardened ball punch. This process is continued at a specified speed until a fine, continuous crack appears in the sheet. The distance travelled by the ball punch to the crack is referred to as the indentation value "IE" (in mm) and represents an important quality feature of the tested sheet metal.
This fast and inexpensive type of testing is often used in incoming goods inspection and - without long sample preparation - directly in the production process.
Test principle
