作者: Steven R. Lotspaih , Wallace R. Birtch
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摘要: Tubular members for use in vehicle frames are easily and economically produced using a hydroforming process which high pressure fluid is presented to the interior of tubular member, thus causing tube expand meet walls forming die. can be formed having significant variations their circumference, diameter along lengths, or gage lengths by stamped blank predetermined shape into preformed roughly mirrors desired finished member.