TPT March 2009

TUBE RUSS I A 2009

generation Mosweld, based on a Mosfet type inverter able to work up to 450kHz. As typical working frequencies in the tube welding process are in the range of 300- 450kHz, Mosfets are the most cost-effective choice for this application. A system control board is provided on this unit, which communicates with the inverter through optical fibres. The inverter is a current fed type, composed of an essential number of modules connected in parallel: the output oscillating circuit is directly connected to the inverter. Mosweld has advantages including high efficiency, modular design, easy maintenance, short circuit proofing, reliability, and much lower voltage inside the cabinets compared with oscillator tube technology. In addition, power components are not subject to obsolescence, while the welder uses the same coils as the Classic oscillator tube welder.

Framag GmbH Austria

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Framag is the manufacturer of high-speed carbide circular sawing machines that provide precise cutting quality, low tool costs, high cutting capacity, and robust and durable design. The company’s machinery can handle a range of workpiece dimensions from 70-200mm (square) and 130mm x 260mm (rectangle), in materials including alloyed and unalloyed steel, carbon steel and tempered steel. The diameter of saw- blades is from 710mm to 910mm, with cutting speeds up to 250m/min, and length of cut pieces from 100mm to 600mm. The company has recently supplied its customized technology to QSZ – QualitätsSägeZentrum GmbH in Germany. The first phase of this deal comprises material positioning ‘for perfect cut’ by frequency-controlled infeed and discharge conveyor as well as by two opposite positioned laser units to control the conveyors. A positioning accuracy of ±5mm is possible. In the second phase the sawing unit will be fitted with a support grate, material feed unit (positioning accuracy of ±0.5mm) and a scrap removal device. This allows a fully automated operation of the whole sawing process.

range of rotating heads to inspect longitudinal defects on wire and bar. Six different sizes are available, from Ø 2mm to 220mm. Website : www.cmseddyscan.com  CMS is a manufacturer of eddy current inspection systems

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Elmaksan Turkey

With over 25 years of experience, Elmaksan is the manufacturer of an extensive machinery range including pipe and profile lines, cut-to-length lines, slitting lines, multi blanking lines, trapeze lines, open profile lines, slitting knives and spacers. The company also offers coil process equipment, automatic packing machines, levelers, rotary shears, multiple cutting units and associated spare parts. Each of these lines can be modified to meet the specific production needs of the user. Elmaksan operates two large facilities, one located in Istanbul (5,000m 2 ) and another in Kocaeli (22,000m 2 ), staffed by over 150 people. More than 80 per cent of the total volume of production is exported abroad to 40 different countries all over the world. With a constantly expanding product range, the company’s machinery is designed, manufactured and supplied according to

 The new solid-state welder generation Mosweld (250kW)

The modular structure and a complete diagnosis system allow very quick and easy maintenance in order to reduce production stops. A special digital control system has been developed for an optimum phase locking (and then for efficiency increase), with the possibility to follow the change of frequency due to load variation, at any working condition. For a quick and cheap solution in case of technical problems, Saet Group offers a special service in remote mode called Teleservice. This allows the company’s engineers to operate from its premises directly into the welding unit installed at the customer ’ s plant. Website : www.saetgroup.com

the highest quality standards. Website: www.elmaksan.net

The state-of-the-art circular sawing machine type KKS 1250 billets for sawing of solid material (round, square, rectangular) is equipped with a centric main and auxiliary clamping device as well as with a height adjustable table. The advantage is the hydraulic support of bent or curved material and protection of the saw blade against jam in the cut. Thus it allows much higher durability of the sawing blades. On average more than 50m² saw blade tool life is reached.  The state-of-the-art circular sawing machine type KKS 1250

Emmedi (Saet Group) Italy

Emmedi, the welding and annealing division of the Saet Group, is a leading manufacturer of solid-state welders. The company has introduced the new solid-state welder

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M arch 2009

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