Deep Drawing and Cupping Testing Machine for Sheet Metals – TT-CTDD60

Computer-Controlled Deep Drawing and Cupping Testing Machine TT-CTDD60 is a precision instrument for testing the process performance of metal sheets and strips. The Erichsen cupping test is conducted according to standards ISO 20482, ISO 1520, and GB/T 9753. The deep drawing or earing test device complies with EN1669 and ISO 11531 standards. The hole expansion test device adheres to ISO 16630 and GB/T 24524 standards.

This machine conforms to GB/T 4156-2007 "Metal Material Sheet and Thin Belt Erichsen Cupping Test" for evaluating the plastic deformation performance of metal sheets and strips. It can also be used for "Metal Material Ear Test Method" and "Non-Ferrous Metal Cup Test Method" to test the anisotropy of non-ferrous metal plates. With the relevant mold, it can also conduct tests according to national standards "Color Paint and Varnish Cup Process Test" and "Metal Sheet Forming Performance and Test Method."

The cupping test involves using a specified steel ball or ball punch to apply pressure to the sample with a 10kN clamping force until the sample develops a penetration crack. The depth of the punch penetration (in mm) represents the cupping test value of the plate, which is used to determine the material's plastic deformation performance.

The cup punching test involves pressing a wafer (φ55, φ100) between the pressure rim and the die. Under the punch's impulse, the sample undergoes radial extension and bending plastic deformation, forming a cylindrical cup. This test determines the anisotropy indicated by the ear production rate. The sample is a disc, and the tensile ratio of the disc to the punch diameter is 1.8.