SPECIAL INSTRUMENTS

Erichsen Cupping Tester

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The GBS-60B is suitable for processing test for metal plate and belt material. It can inspect the anisotropism of nonferrous metal plate and the plastic deformation performance of metal plate and belt material.

 

Cupping test basics:

• The system uses a steel ball or ball punch of a certain specification to press a specimen, which is clamped with a 10 KN force.

• The force is applied until the specimen is penetrated.

• The depth that ball punch penetrates into the specimen is the cupping value of the tested specimen, and this cupping value is used to estimate the plastic deformation performance of the material.

Deep drawing cups testing of non-ferrous metals:

• This method uses a column punch of a certain specification to impact a round plate with a certain external diameter between clamping mould and cups testing mould.

• The round plate extends along the radial direction and bends under the pressure of the punch, which turns the plate to a column cup, then two symmetrical ear shape protuberances, are formed on the edge of this cup, the anisotropism of material is estimated by measuring the ear rate.