Sigmapi Systems Ltd
Lowstir - Low Cost Friction Stir Welding
Friction stir welding is a welding technique invented by TWI (The Welding Institute) in 1991. The process requires no melting (the weld is made in solid state) and produces high quality welds on a wide variety of metals.
Sigmapi Systems Limited has been working with TWI, Applied Measurements Ltd, Suffolk Precision Ltd and Fatronik to produce a low-cost version friction stir welder. The product, LOWSTIR TM, has undergone rigorous testing at several sites and is now being marketed worldwide.
The product allows you to convert an existing milling machine into a friction stir welder and automatically monitors the process through an easy to use operator interface to provide feedback on the quality of the weld produced.
Friction stir welding has been proven to be highly effective on aluminium and its alloys, and work is currently being carried out to identify the optimum operational parameters for different thicknesses of metals.
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