TPT January 2009

T echnology U pdate

Latest model from a frontrunner in rollforming machines

application. Special electro positioning devices provide a fast adjustment for each profile and an accurate cutoff. It is possible to achieve a cutoff accuracy of ±0.024" (0.6mm). With each cutoff or punching cycle the servo-drive of the machine accelerates an enormous 10 metric tons within a distance of only 7.9" (200mm) to the full rollforming speed. The technology behind this latest Dreistern machine especially serves the productivity and quality goals of demanding profile manufacturers. The market for heavy precision profiles is experiencing above average growth. Therefore, it is no surprise that Dreistern’s P3.200 can be found at Europe’s most successful rollforming companies. Dreistern GmbH & Co KG – Germany Fax : +49 7622 391 205

Siempelkamp, Germany, designs and constructs crimping presses for the production of pipes, specialising in custom built presses with large press capacities. The company has supplied a new crimping press to Europipe, after eleven months of development, four months of construction, two weeks of preliminary testing and acceptance testing. The physical dimensions of this system are also impressive, as it contains nearly 40 forming stands and a cutoff unit for maximum 52ft (16m) long cross sections. This machine can work both continuously and in Start-Stop ® operation, providing an unsurpassed flexibility when bringing highly precise punch patterns into the finished profile. Dreistern has launched a rollforming machine for profile cross sections of up to 23.62" x 7.87" (600mm x 200mm) and wall thickness of 0.197" in (5mm). This machine was launched at the recent Euroblech 2008 exhibition. Usually machines of this calibre are designed for relatively simple profile geometry and looser tolerances. However, this P3.200 system is completely different as it enables the production of complex profile geometry, with extremely tight tolerances and short changeover times (even for complete product changeovers).

As the first of three presses, the crimping press will carry out the initial bending of the edges of up to 50mm thick and up to 18m long sheet metal made of high-strength steel, which will be formed into pipeline pipes by the two downstream presses. The disassembly of the huge machine took almost two weeks, and five weeks were allowed for the reassembly and start-up of the press. Disassembly and transport were planned and overseen by Siempelkamp. For the construction of the press, Siempelkamp had to reinforce the foundation of its factory workshop. The largest parts had to be transported on a specially made low-loading truck (with 600 horsepower and 160 tyres) and a ship, because they were too heavy for the The punch patterns task is handled by the cutoff system ‘Jumbo’. The 79" x 89" (2.0 x 2.25m) large table surface houses two separate presses. One serves the separation of the profile and the other is used for hole-punching. Alternatively, shears, presses, cutoff saws, or high-speed cutoff saws can be mounted on this table. Due to hydraulic-clamping the changeover takes only a few minutes. This means that it is now possible to select the optimal cutoff process tailored to each  The P3.200 rollforming machine is used to manufacture profile cross sections

Email : sales@dreistern.com Website : www.dreistern.com

Europipe commission new crimping press

 The crimping press during disassembly at Siempelkamp

 Four heavy-duty cranes were needed to load the crossbeam onto the cargo ship highway bridges along the way. The heavy goods vehicle transporting the crossbeam of the new press had an overall load of 355 tons. Fully assembled, the machine has dimensions of 9 x 13 x 16m, and has a pressing capacity of up to 11,000 tons. Siempelkamp Maschinen- und Anlagenbau GmbH & Co KG – Germany Fax : +49 2151 925683 Email : ralf.griesche@siempelkamp.com Website : www.siempelkamp.com

 Fully loaded, the special transporter truck had a weight of 355 tons

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J anuary 2009

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