Automatic Cupping Test Machine Model 111

Automatic Cupping Test Machine Model 111

Parent Product
Sheet Metal Formability - Ductility Testers
Automatic Cupping Test Machine Model 111

Qualitest’s electronically controlled cupping test machine with electro-hydraulic drive and automatic test sequence, including crack detection, standardised cupping speed and a maximum drawing force of 45kN - Model 111.

This Cupping Test Machine is especially designed for an easy and quick quality conformance inspection and quality control on sheet and strip metal, but also particularly suitable for production monitoring because of its sturdy construction.

The testing machine, Model 111, is suitable:

  • For the CUPPING TEST on all ferrous and non-ferrous metals in accordance with the following standards

ISO 8490

DIN 50 101 / 50 102

EN 14-58

ASTM 643-84

EN 14-67

JIS Z-2247

As well as all national and international standards mentioning the ERICHSEN Cupping Test.

  • For the Olsen Test as used in the USA, if appropriate tools are set up.
Applications

There are important reasons for using the Cupping Test Machine, Model 111, for quality assurance:

  • Lowering of manufacturing costs by making spot checks on the drawing quality of cold rolled sheet during production or in the process department.
  • Sorting out of material of lower quality arriving at the Goods Inwards Department. Without special test preparation it is immediately possible to establish if the material supplied has the prescribed drawing quality.
  • Determining the most appropriate sheet thickness for a particular drawn workpiece to optimise the ratio of price to suitability for the manufacturing process.

Quantitative measurement of sheet quality by means of the ERICHSEN Cupping Value provides a basis of communication between sheet metal producers and users.

The form of the crack and the surface roughness (= grain size) also provide information on the quality of the sheet metal and is suitability for drawing, giving valuable information especially to the sheet metal producer.
The good functional layout of Model 111 makes this machine particularly user friendly. Operators without previous knowledge or experience can be quickly trained to operate the machine continuously.

The sturdy design and the hydraulic oil system employed ensure that minimum wear is experienced so that a good repeatability of the test results is assured over a long period of time.

Theory/Method

This testing machine is available as a work-top model with compact dimensions which requires only a minimum of space. All hydraulic and electronic control and drive units are enclosed in a sturdy sheet metal housing. The necessary control elements are clearly laid out on the front panel.

The test cylinder is installed at an angle, so that the test procedure can be carried out comfortably when seated. It is no longer necessary to open the test head to remove the specimen, as this is automatically released by the hydraulic specimen holder once the test has been conducted. The entire test procedure runs automatically, including crack detection.

When carrying out the Cupping Test the sheet metal specimen in the form of a strip is inserted in the test cylinder and centralised by locating diagonally. After pressing the "Start" push button the sheet holder force of 10kN as well as the drawing speed - both conforming to the standards - are adjusted automatically and the test procedure is initiated. As the testing machine is equipped with the function "automatic stop at specimen failure" the cupping procedure is automatically interrupted when a crack appears so that an objective test result will always be achieved. It is possible to delay the crack detection using a potentiometer. Often this facility is necessary for testing thicken sheet metal panels in order to achieve a uniquely defined crack in conformity with the standards.

Technical Specification

Model

Model 111

Drawing Force

Max. 45kN / 100bar

Drawing Speed

15 ± 5mm/min

Punch Stroke

21mm

Sheet Holder Force

10kN + 1.5kN

Specimen Sheet Width

105mm

Specimen Sheet Thickness

Up to approx. 2mm  (applicable for a tensile strength of approx. 400 N/mm2)

Dimensions

550 × 400 × 600mm (W × D × H)

Weight

Net. 100kg

Power Consumption

0.5kW