TPT May 2008

T ube & P ipe W elding: T rends & P rogress

resistant containers that ensure consistent performance. With Lincoln Pipeliner consumables, operators can achieve a clean weld deposit, uniform bead shape and excellent puddle control providing good wash-in at the weld toes. This range of consumables is manufactured under a quality system certified to ISO 9001 requirements and manufactured to actual lot control and testing. No matter what the application, there is a Pipeliner product that provides an excellent welding solution. Lincoln Electric’s global network of manufacturing and distribution facilities allows optimal mobilization and deployment of resources for pipe contractors. The Lincoln Electric Company offers advanced design, development and manufacture of arc welding products, robotic arc-welding systems, plasma and oxyfuel cutting equipment. Lincoln Electric Company – USA Fax : +1 216 486 1751 Website : www.lincolnelectric.com

Portfolio of premium consumables for pipeline welding

Pipeliner ® is Lincoln Electric’s portfolio of premium SMAW (stick), GMAW (MIG), and FCAW (flux-cored) consumables developed specifically to meet the rigorous demands of the global pipe welding industry. According to the company, they are the most thoroughly tested pipe welding consumables on the market today. Lincoln Electric provides innovative welding technology, equipment and

consumables for pipeline construction. Every Pipeliner consumable is designed to work in partnership with an array of Lincoln Electric equipment, providing optimized results in quality and productivity on the most demanding types of applications Pipeliner electrodes stand up to the harshest environments, as they are packaged in hermetically-sealed, moisture-

 Lincoln offers a comprehensive range of Pipeliner welding wire

Faster weld-speeds with less energy

Increasing safety standards and an obligation to reduce weight and material content have increased the importance of high strength steels for many uses. Because of their structural rigidity more and more profiles will be designed as welded ‘hollow’ shapes. For these applications, induction welding offers some interesting alternatives. Dreistern, Germany, has launched a new weld-table offering advantages when working with these materials. The design

provides up to 100kN of press-force, sufficient for most profiling demands. Due to its quick-change design, all product- related components are changed over in a very short time. Individual reproducible settings of all rolls and lateral adjustments ensure exact alignment of strip edges and profile, increasing the accuracy of the welded shape. Composite tubes combine both the corro- sion resistance properties of plastic tubes and the bursting pressure of metal pipes. Dreistern’s collaboration with the extruder

 High-speed laser-welding of welded shapes

Welding physics limit the maximum possible weld speed for all welding techniques, including laser welding. Laser experts use the term ‘humping’ to refer to a dynamic process in the weld pool that occurs particularly at high welding speeds, causing unwanted humps and deficiencies to form at periodic intervals along the weld. By varying the parameters, it is possible to push the humping threshold to higher speeds. Trumpf and Dreistern have cooperated to develop a new production system for manufacturing tube sections at high speeds. Dreistern GmbH & Co KG – Germany Fax : +49 7622 391 205

manufacturer Maillefer has helped to evolve the system technology. Another milestone was the integration of the disc-laser, a new gen- eration laser support- ing weld-speeds of up to 60m/min. The Trumpf disc-laser is equipped with a highly dynamic seam- tracking system. Despite higher welding speeds, this new technology actually reduces energy consumption.

 Fast and energy efficient laser-technology for composite tubes

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

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M ay 2008

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