EoW May 2009

english technology news

Innovations in hardness testing

accordance with the trend for increasing automation and reduction of operator influence, while indentation setting, microscope positioning and optical measurement of the indentation are all performed completely automatically. The range of compound (XY) tables has also seen further improvements in support surface area, test load and travel. The new motorised tables are designed for test loads up to 250kg and have travel ranges up to 150mm x 50mm. The range of applications covered by the ZHU/zwicki-Line has been expanded to include fully automatic Jominy testing to ISO 642 and ASTM 255. In the Jominy (end-quenching) test the hardness of steel is determined by performing a hardness profile test with the Rockwell (HRC) or Vickers (HV30) method on a prepared specimen. Available from Zwick are motorised compound tables with appropriate Jominy tooling for three or five standardised specimens. Testing is carried out completely automatically with user-friendly testXpert® II software; the operator only has to enter the starting points and test sequence directions. The system is suitable for use in research and development, production and goods inwards testing. Zwick GmbH & Co KG – Germany Fax : +49 7305 10200

The latest developments in Zwick’s ZHU/ zwicki-Line provide a new system for classical and instrumented hardness testing. This fully automatic universal hardness testing system covers the Vickers, Knoop, Brinell, Rockwell, ball indentation and instrumented indentation methods. The ZHU/zwicki-Line for instrumented indentation testing in the macro range covers a wide range of applications and features hardware and electronics precisely tailored to the requirements of hardness testing, guaranteeing high reproducibility. In addition to instrumented indentation tests to determine hardness and other material parameters, the ZHU/zwicki-Line can perform all the classical hardness testing methods used for metals. Whichever method is used, the testing system records the load-indentation depth curve to provide additional material assessment. The instrumented indentation test includes elastic and plastic deformations in order to obtain the elastic and plastic material characteristic values. The core of the testing system is a hardness measuring head, into which the measuring systems for test load and indentation depth plus an indentor with hold-down device are integrated. For optical-based hardness testing methods to Vickers, Knoop and Brinell an add-on unit with measuring microscope is available. This unit is motorised in LaserLinc has released a new model in its Triton line of triple-axis micrometers. The Triton360 has a 60mm measure- ment window and a maximum of 12,000 measurements per second (4,000 per axis). The Triton360 is designed to providemore precise tracking of average diameter than two-axis micrometers, near-perfect ovality measurement, and improved flaw detection on opaque and clear products. The scanner can be used for pipe, cable, hose and other similar materials. Two Triton360s can be arranged on a dual-mount stand to provide six axes of measurement, 30 degrees apart.

Email : info@zwickroell.eu Website : www.zwick.de

Measurement and flaw detection

LaserLinc Inc – USA Fax : +1 937 318 2445 Email : info@laserlinc.com Website : www.laserlinc.com

Two Triton360s on a dual-mount stand ▲ ▲

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EuroWire – May 2009