Laser Welding
Thin Sections
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A laser beam can be focused to a very small spot diameter, creating a powerful, precise heat source suitable for welding. These high power densities mean that laser welding is generally fast with minimal amounts of heat and distortion. For example, welding speeds of over 10m/min are achievable in steel 1mm thick. Moreover, virtually any weldable material may be processed, making laser welding an ideal tool for high volume manufacturing. Lasers can be used for continuous welding by manipulation of either the laser or the component. The technique is applicable to 2D and 3D components, rotary welding, and even spot welding, where completion rates of 120,000 welds per hour are achieved in some industrial applications.
Benefits and Applications of Laser Welding
Lasers are ideal for high volume manufacturing as they have high welding speeds and level of automation allowing 24 hours a day operation. A laser welding cell can be very cost effective for an appropriate application. For example, a cell working a two shift system could cost around £60 per hour, including capital investment and running costs. At a welding speed of 10m/min this would be approximately £0.15 per metre of weld. Other benefits include low distortion, high accuracy and aesthetically appealing welds.
Lasers are capable of welding:
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Contact:
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Laser and Sheet Processes Group
TWI Ltd Granta Park Gt Abington Cambridge, CB21 6AL (previously CB1 6AL), UK |
email: lasers@twi.co.uk Tel: 01223 899000 Fax: 01223 890661 |
Copyright ©2004 TWI Ltd
