EuroWire November 2015

News Technology

Systems for cleaning and testing of welding wires

▲ ▲ The Wire Welding Test Equipment (WWTE) from GEO-Reinigungstechnik

measurement curves that are relevant for assessing the quality such as conveying resistance F (N), welding current I (A), the welding voltage U (V) and the wire speed both directly after the wire feed rollers as well as directly in front of the welding gun. It is precisely the ratio of those latter two parameters, which in addition to conveying resistance can provide information on the weldability of the wire. Thanks to the rapid measurement of the wire speed immediately after the conveyor rollers and directly at the welding gun, micro-welds in the contact tip and the slip in the conveyor rollers can be reliably detected, and informed conclusions on improving the quality of wire can be drawn. The galvanically separated measuring signals are displayed and stored using special software as waveforms on a time axis. They can be issued or printed out separately, one above the other or superimposed. By creating reference measurements and the allocation of a tolerance range, fast measurements can be made for quality assurance in welding wire production. The measuring device can be used with all standard MIG/MAG welding equipment to test all types of welding wires fromØ0.8mm to Ø2mm. GEO-Reinigungstechnik GmbH – Germany Website : www.geo-reinigungstechnik.de

Since GEO-Reinigungstechnik GmbH (GEO) has specialised in the development, planning and production of cleaning equipment for wires, cables, strand, strips, tubes and similar longitudinal configurations. High performance systems for surface treatment, based on mechanical or wet-chemical processes, are custom-designed and manufactured. Ultrasonic modules and high-pressure nozzles, integrated in space-saving in-line systems with fluid management, guarantee good results in non-contact and residue-free aqueous cleaning, both in single lines as well as multi-wire cleaning. Steam nozzles and mechanical systems with brushes or textiles complement the options to optimise the surface quality. This includes, due to its highly versatile usability, the ‘Primary Wire Wipe’ (PWW) wiping system, which uses non-woven tapes both to reduce drawing agents and loosely adherent metal particles, as well as for the application of release agents, adhesives, lubricants and welding wire finish. The latest system in GEO’s portfolio is a measuring device for the testing of welding wires. Starting from the fact that the quality of a weld is critically dependent on the quality of the welding wire and the arc and apart from the metallurgical characteristics, the surface quality and their sliding and contact properties play a crucial role, the Wire Welding Test Equipment (WWTE) provides 1995

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November 2015