New Technology Joins Aluminum & Steel
New Technology Joins Aluminum & Steel
Jason Sandefur
Mazda Motor Corp. reported that it has developed the technology to join aluminum and steel using frictional heat. The technology can reduce costs by eliminating the need for fasteners. Mazda created the technology to join aluminum materials using frictional heat in 2003. But because aluminum and steel have different fusing temperatures, they could not be joined at the atomic level, making it necessary to use fasteners.
The new technology uses plated steel sheet. When a pin is pushed onto the aluminum side, frictional heat causes the aluminum to change shape. The plating is also pushed outward, causing the steel sheet and aluminum to come into contact and join at the atomic level.
Mazda said the heating method would help in the development of lighter bodies that use more aluminum. The automaker plans to use the new technology to join the aluminum trunk and steel bolt holding fixtures on its newly remodeled Roadster to be released during the second half of 2005. �2005 FastenerNews.com
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