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New Welding Technology Allows More Aluminum Use.
Issued at 2012-09-27
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General Motors Research & Development invented an industry-first aluminum welding technology that is expected to enable more use of the lightweight metal on future vehicles. GM's new resistance spot-welding process uses a patented multi-ring domed electrode that does what smooth electrodes are unreliable at doing - welding aluminum to aluminum. By using this process, GM expects to eliminate nearly 2 pounds of rivets from aluminum body parts such as hoods, lift gates and doors.
Source: IH Daily
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