TPT May 2008

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

Multi orbital friction welding technology

Multi Orbital Systems GmbH, Germany, enable welding of thermoplastic tubes within seconds using innovative friction welding technology. This technology involves orbital stands that operate with a rotating motion. For example, the ends of two pipes are locked in a Mosys-machine.

They are then moved in the same direction with a 180° degree offset at micro orbital movements of 0.3mm to 1mm to create frictional heat. The workpieces are rubbed across their whole weld surface until the areas requiring joining are plasticized.

When this specific material plasticizing temperature is reached, the orbital motion stops in a

 A Mosys machine for multi orbital friction welding

already been welded with a high strength joint. A mobile application for thermoplastic pipes is to be developed in the near future, while there is also a plan to transfer this technology to metal pipeline applications. Multi Orbital Systems GmbH – Germany Fax : +49 9665 954543  Orbital stands operate with a rotating motion to achieve the weld

fraction of a second, while both ends are pressed together, creating a high strength join. The welding flash is much smaller than with common techniques, and no special cooling period is required. The multi orbital friction welding process is in use in the automobile industry and plastic profiles have

Email : service@m-o-sys.de Website : www.m-o-sys.de

Automated welding machines for short tubes

weil engineering GmbH, Germany, is a leading company in the design and construction of automated welding machines and systems for production of high quality short tubes. Short tubes are used in a wide variety of applications, as finished or semi finished products.  weil manufactures a range of automated welding machines for short tube production, including the ecomaster

In the automotive industry short tubes are used for mufflers, catalytic converters, structural body parts as well as hydroformed members and motor and transmission components. The heating and ventilation industry, household appliances, container production and machine building require high quality tubes. weil’s advanced equipment is employed by a number of leading manufacturers. This equipment is used in sheet metal handling, metal forming, rounding, welding and final processing of tubes. The company’s programme of modular components provides the combination of proven rounding and welding technologies from semi-automated operation to fully automated production. weil’s welding machines achieve excellent results in tube production and ensure high repeatability. They combine the roll forming process, the welding process and automated clamping procedures. The equipment is designed for efficient product change and short change over time. Machine design, software development, and assembly are provided by weil’s in-house departments. Aftersales service is also provided in cooperation with international sales agencies and the

company’s North American subsidiary. weil engineering GmbH – Germany Fax : +49 7631 18 09 49 Email : info@weil-engineering.de Website : www.weil-engineering.de

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