GUNT, Cupping Test, WP 300.11, Device_1920559
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GUNT, Cupping Test, WP 300.11, Device

This accessory for WP 300 makes it possible to investigate the material properties of thin sheet metal. To do this, the specimens are deformed in practice-oriented cupping experiments and then examined.

The accessory contains a punch, a hold-down clamp, a die and a mirrored cylinder for analysing the specimen. The assembled test device is installed in the compression area of the WP 300 experimental unit, between bottom crossbar and crosshead.

A thin sheet metal specimen is clamped between the die and the hold-down device.

The specimen in then deformed until it cracks by means of a spherical drawing punch. The mirror allows you to observe the specimen from below and to see exactly when the crack starts. Thin sheet metal with a thickness up to 2mm can be studied with the device.

The depth achieved in mm is defined as a standard of comparison for cold formability. In addition, the type of the rupture and the surface structure of the sagging area are analysed.

A set of specimens is included to carry out experiments. The set contains five specimens each of aluminium, copper, brass and steel.

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