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Laser Welding Joins the Lightweighting Trend

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JAMES SCHLETT, EDITOR, [email protected]

To return the Cadillac brand to the global prestige luxury stage, General Motors threw as much as it could — 13 materials in all — into the sedan’s body to make it the lightest vehicle in its class. And then to join this “crazy quilt of aluminum, steel, magnesium and plastic,” as one industry watcher called it1, GM employed the auto industry’s most comprehensive and advanced mixed-materials manufacturing techniques, which are deployed by an army of 28 robots that weld the inner and outer frames of the vehicle (Figure 1). Figure 1. The aluminum roof...Read full article

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