Breakthrough Welding Technique Supports GM’s Fuel-Economy Efforts
Electrode makes resistance welding effective for aluminum panels
General Motors Corp.’s research arm has developed a resistance spot welding technology it claims is the first for the auto industry: it is based on a patented electrode design that is more reliable for welding aluminum. The importance of this is that it will allow the automaker to make greater use of aluminum in automotive bodies (e.g., hoods, liftgates, doors), which will lower vehicle weight and thereby improve fuel economy.
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