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Method and tool for contracting tubular members by electro-hydraulic forming before hydroforming

United States Patent

March 15, 2011
View the Complete Patent at the US Patent & Trademark Office
A tubular preform is contracted in an electro-hydraulic forming operation. The tubular preform is wrapped with one or more coils of wire and placed in a chamber of an electro-hydraulic forming tool. The electro-hydraulic forming tool is discharged to form a compressed area on a portion of the tube. The tube is then placed in a hydroforming tool that expands the tubular preform to form a part.
Golovashchenko; Sergey Fedorovich (Beverly Hills, MI)
Ford Global Technologies, LLC (Dearborn, MI)
12/ 563,184
September 21, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with U.S. Government support under Contract No. DE-FG36-08GO18128 awarded by the Department of Energy. The Government has certain rights in this invention.