Manufacturing Industry
Aluminum plastic forming cuts cost in auto lift gate.(Forming/Processing)
Advanced Materials & Processes, April, 2004
An aluminum sheet-forming process called quick plastic forming (QPF) has been developed to provide improved styling flexibility, to simplify assembly, and to improve fuel economy by General Motors Corp., Warren, Mich. The QPF process has been adapted from a hot blow-forming aluminum process used in the aerospace industry.
In the QPF process, a heated aluminum sheet is subjected to high-pressure air that makes it conform to the shape of a hot tool. The high temperature improves formability so that even complex shapes can be manufactured. Dimensionally correct panels are possible because springback is nearly eliminated. Dies for the process are created directly from design data. The technology enables GM to make the entire outer panel of the Chevy Malibu Maxx...
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