Deformation testing machine Model 227

semi-automaticmotorizedfor sheet metal

The Model 227 bead test instrument is designed to determine numerically the technical properties of stamping paints and plastic coatings on standard 33 mm cylindrical cups. It forms a defined bead in the cup under controlled deforming conditions and uses a conducting fluid to detect cracking electrically, providing reproducible measurements suitable for direct comparison.


Test principle
Standard cups (Erichsen stamping paint test pieces) are produced from coated strip using ERICHSEN cupping and deep-drawing cup test machines (Models 212 and 242). During deep drawing the coating is subjected to stresses similar to practical conditions; deformation severity increases towards the upper rim of the cup. The Model 227 forms a bead to a defined depth until the deformation limit of the stamping paint is reached. A conducting fluid wets the coated surface and penetrates fine cracks; when the fluid contacts the metal surface an electrical reading indicates the degree of cracking.


Scope of delivery

• Bead Test Instrument, Model 227, without beading tool

Characteristics / Technical specifications

• Drive: Electric
• Fuses: 2 A
• Dimensions: Width approx. 300 mm; Height approx. 200 mm; Depth approx. 400 mm
• Net weight: approx. 40 kg
• Motor rating: 250 VA / 2780 min^-1
• Power supply: 230 V ~ 0.5 kW
• Portable / Stationary: Stationary