TPT March 2007

Technology Update

Perfect TIG welding in all locations

Lorch Schweißtechnik, Germany, has introduced the full digital inverter T-series for mobile TIG and MMA welding. The new T-series has been developed for TIG-welding quality either in the workshop or in the field. Available in two versions with 220A as DC or AC/DC, the machine combines pure power, high user comfort and perfect welding results. The ultramodern control concept is based on the theory of ‘three steps and

weld’, backed up by the Lorch SmartBase expert database. The ‘T’ calculates the best welding adjustment with just a few parameters. High-grade steel and aluminium railings can be welded without welding spatters, with thin seams and a perfect optic. In addition, with the newly developed Lorch Macs alternating current procedure, aluminium can be welded perfectly within a thin sheet range and also, with Fastpuls, at up to 2kHz.

› The T-series TIG welding machine from Lorch

The T-series has a patented Sine-Power Management system that offers 220A maximum welding current at 230V mains without turning off the fuse, even with a long cable. At only 15kg net weight, the T-series has a strong duty cycle of 35 per cent at TIG and electrode welding, and welding is undertaken without breaks. Due to the strong construction the T-series also offers twice as much dropping security as demanded by law, plus perfect dust protection. Lorch Schweißtechnik GmbH – Germany Fax : +49 71 91 5 03 297

Rotary sizing mill for online and offline applications Kusakabe, Japan, an innovative tube and pipe mill manufacturer, is continuing to expand the applications for the Rotary Sizing Mill concept as an alternative to sizing tube and pipe with a diameter range from 30-650mm (1.2 to 25.6"). The Rotary Sizing Mill (RSM) concept uses two cages of cylindrical rolls in a planetary configuration around the tube. The internal diameter of the cage of rollers is set smaller than the incoming tube. As the cage of rollers rotates around and along the tube, in a similar manner to a nut on a thread, the tube diameter is reduced. This technology is being applied to both online applications on tube and pipe mills and offline applications where the outside diameter needs to be reduced and surface finish improved. The variable diameter outcome of the RSM makes the machine ideally suitable for sizing small production runs of odd sized tubes without the need to purchase extra tooling.

Email : info@lorch.biz Website : www.lorch.biz

Mr Yukio Kusakabe, executive director, stated, “ The RSM technology brings a totally new concept to the ERW, TIG and laser tube and pipe industry.” The RSM is a smaller machine requiring less tooling; the tooling is of a simple parallel design that is easy to manufacture and maintain. The internal diameter created by the cage of rollers is infinitely adjustable within the upper and lower limits of the cage configuration. Surface finish improvements over the original strip in excess of 30 per cent

Custom-made extrusion lines for the Russian market

Battenfeld Germany,

Extrusionstechnik

GmbH,

manufactures tailor-made extrusion lines for the production of pipes, profiles and thermoforming sheet. Russia has developed into one of the company’s most important export markets, and it has responded to the rising demand for high-performance machinery concepts fi Battenfeld Extrusionstechnik specialises in the manufacture of extrusion lines

› The Rotary Sizing Mill (RSM) concept is available for a growing number of applications

have been achieved with roll marks and pick up eliminated, thereby reducing polishing costs. Tooling wear is less than conventional tooling wear and also benefits from the absence of wear impact on tube quality or precision. Improvements in diameter accuracy are achieved and are comparable to drawn tube capabilities. RSM offers other benefits including reduced energy consumption, floor space, tooling, maintenance costs, changeover times and scrap.

Kusakabe Electric & Machinery Co Ltd – Japan Fax : +81 78 992 9139 Email : sales@kusakabe.com • Website : www.kusakabe.com

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