Sheet Metal Cupping Tester Model 100

ASTM E 643-84, ISO 8490, DIN 50 101, DIN 50 102

Application

Qualitest’s Sheet Metal Testing Machine for manual operation provides a maximum drawing force of 30kN and a blank-holder force according to the standard, of 10kN - Model 100.

The manually operated Testing Machine is intended for measuring the drawing qualities of ferrous and non-ferrous metal by means of the CUPPING TEST in accordance with

Purpose

The Qualitest Sheet Metal Testing Machine, Model 100, provides a means to measure the drawing quality of sheet metal with very little effort.

By establishing the quality of material which is still just satisfactory for producing a particular drawn workpiece the lowest cost material suitable for the part can be established. The standardised Cupping Test is in this way useful for the Purchasing Department, as part of an order specification.

The surface grain size is shown up clearly on the tip of the bulge produced in the Cupping Test, and this can be interpreted as a numerical value with the aid of the grain scale. On this basis, the grain size of the sheet metal can also be fixed at the out-set. No special skills are required to operate the machine. Anybody can use it after instruction.

Description

The Sheet Metal Testing Machine, Model 100, is a bench mounted unit with a cast iron machine body and a cylindrical test head. To conduct the cupping test the sheet metal specimen or foil is entered into an opening through the test head. The screw-in blankholder is set for the sheet thickness using the scale provided.

The test head is then tightened manually against a stop on the locating sleeve. This clamps the blank with a force of 10kN as required by the cupping test standards mentioned above. The clutch pin is pulled outwards from the locating sleeve, the test head is turned clockwise and the cupping process commences. The cupping test value reached is displayed on a digital counter.

The forming process and the appearance of the crack can be observed conveniently looking down onto the blankholder. In poor light, or when using the smaller test tools nos. 5 and 11, we recommend the use of a special microscope with battery operated lamp.

Technical Specifications