TPT July 2010

I nspection & T esting

In-line gauges for diameter, ovality and shape

FOLLOWING new developments in high- tech laser optics, Zumbach Electronic has introduced the new Odac 550 laser scanner with HLF (high-accuracy large field) technology. This technology allows the generation of a highly collimated and accurate measuring field of 550mm (22") without any dead zone. It also means that the tube position in the field has no effect on the readings.

Single axis or multiple axis systems are available, in both static and oscillating configuration, applicable for hot or cold processes. Applications cover solutions for quality control (NDT) in cold status to hot processes like MPM sizing mills, SRM mills, conveyors, pilger mills, piercing mills, radial forges and extrusion presses. The sophisticated protection/cooling system ensures reliable operation and minimal maintenance. Other highlights include CSS (calibrated single scan) technology, 1,000 truemeasure- ments/s, mach 3 scan speed (meaning no dynamic errors), accuracies to within a few hundredths of a millimetre, and EPM method/software for polygonal deviations. Zumbach also produces Profilemaster ® systems, based on the latest technology, with laser contouring and CCD camera vision and processing. The systems capture the full product circumference/section and measure and monitor the relevant profile dimensions, angles and radii. The range of Profilemaster gauges includes versions for small precision profiles starting from a dimension of 2mm (0.08"), cold formed tubes and profiles, as well as medium size products, hot or cold, up to

Profilemaster SPS 140-N4 measuring unit

dimensions of approximately 250mm (10"). Depending on the process, maximum product temperature and size range, a number of standard models are available. Special systems are conceived and built upon specific request. Features include the latest ‘light cut’ technology; modular design with one to six laser/camera modules, depending on the type of profiles; fully static system; easy ‘teach-in’ from CAD product files; integrated protection and air cleaning system; and close-to-zero maintenance, with no wear parts. Zumbach Electronic AG – Switzerland

Steelmaster SMO 550 measuring unit

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Email: sales@zumbach.ch Website: www.zumbach.com

Improved test results for seamless and welded steel tubes

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INSTITUT Dr Foerster provides a comprehensive product range for non- destructive testing, metal detection and magnetics. The worldwide presence of the group of companies provides local qualified support. Rotomat is the company’s solution for detecting longitudinally oriented inner and outer defects for oil field and boiler tubes with test material diameter from 20 to 520mm.

The pole shoes are the precondition of magnetic flux leakage testing with rotating probe to obtain an optimum magnetic flux within the test material. A new generation of pole shoes in the Rotomat sensor system improves the test results. Quick and simple set-up is possible, because the new pole shoes are mechanically compatible with the existing ones. A steel tube with 406mm diameter and a wall thickness of 13mm is used as test material. Several artificial 5% outer defects with different length and width, two inner defects with 6% and 8%, as well as two bore holes with 1.6mm and 3.2mm diameter are inserted. The improved results are shown in the following result window of Rotomat DS test electronics. Institut Dr Foerster – Germany Fax: +49 7121 140459 Email: ts@foerstergroup.de Website: www.foerstergroup.de

    

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  

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           

Test results:

A represents 5% outer defect B represents 6% inner defect C represents 8% inner defect

D represents 3.2mm Ø bore hole E represents 1.6mm Ø bore hole

                 

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94

J uly 2010

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