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Laser transmission welding of polyamide tubes to plates

: Baylis, B.; Daly, P.; Herfurth, H.

Society of Plastics Engineers -SPE-:
Society of Plastics Engineers. Plastics encounter at ANTEC 2007. Annual technical conference. Vol.5 : May 6 - 11, 2007, Cincinnati, Ohio, USA
Brookfield, Conn.: SPE, 2007
ISBN: 978-1-604-23214-1
Society of Plastics Engineers (SPE Annual Technical Conference) <2007, Cincinnati/Ohio>
Plastics Encounter Trade Show <2007, Cincinnati/Ohio>
Conference Paper
Fraunhofer ILT ()

A major technical hurdle to overcome in making an all-plastic heat exchanger is welding tubes to the base plates of tanks. A heat exchanger that must remove a large quantity of heat quickly requires a large number of tubes, usually closely packed. Various techniques to achieve this have been investigated. The materials for tubes and tank plates were all polyamides; various combinations of PA 66, PA 612 and PPA were studied. Data on successful laser welds are presented.