Lap joint welding of dissimilar materials

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  • Optimised structural design
  • High-strength joints
  • Weight saving

Technology Market 

Welding of dissimilar materials is the key technology to improve productivity and quality in different fields including:

  • Transportation: reduction of vehicle weight, and hence gas emissions, by joining light alloys with high strength joints (e.g. aluminium alloys to steel)
  • Energy production: joining steels difficult to weld

The welding technology proposed by the UCL meets the market demand for joining with high-strength joints dissimilar materials that are traditionally difficult to weld.

The UCL invention

UCL has patented (developed) a friction based welding process that ensures obtaining a high-strength joint between dissimilar materials, even for dissimilar materials that are traditionally difficult to join (such as steel and aluminium). This high-strength joint avoids premature cracking. The production rate can reach a weld of 1 meter long produced in less than 2 minutes.

Technology Status

This work is the subject of two patent applications:

VAN DER REST C., SIMAR A., JACQUES P.J. , Method for welding at least two layers; EP12166124.3, april 2012, and PCT/EP2013/058844, april 2013.

(internal file number : UCL-045)


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