Internal high-pressure forming process and apparatus

Details Internal high-pressure forming process and apparatus Internal high-pressure forming process and apparatus

1995-05-08

1998-01-27

Bryant, David P.

Metal working

Method of mechanical manufacture

Utilizing transitory attached element or associated separate...

72 61, 228157, B23P 1700, B21P 2818, B23K 3102

Patent

active

057110590

ABSTRACT:
To produce an elongate hollow metal body with a cross-sectional contour varying in the longitudinal direction by the internal high-pressure forming process in an internal high-pressure forming press, a sheet-metal blank composed of two blank parts of identical area is first produced, each part having, apart from additional joining-area parts provided in the region of the longitudinal edges, in the longitudinal direction at least the length of the longitudinal hollow body and in the transverse direction at most half the length of the respective cross-sectional contour. Subsequently, the two blank parts are laid one on top of the other and are joined together, in particular welded, in the region of the joining-area parts. Thereafter, the sheet-metal blank is expanded by introducing a pressure medium between the two blank parts held within a tool consisting of two dies. The tool is so shaped that, when it is closed onto the blank, it produces a curved shape in the blank, with the result that the hollow body produced by expansion is curved and can have a cross-sectional contour which varies along its length.

REFERENCES:
patent: 3172194 (1965-03-01), Pauls
patent: 3768288 (1973-10-01), Jury
patent: 5016805 (1991-05-01), Cadwell
patent: 5070717 (1991-12-01), Boyd et al.
patent: 5083371 (1992-01-01), Leibfried et al.
patent: 5115963 (1992-05-01), Yasui
patent: 5228615 (1993-07-01), Iijima et al.
patent: 5240376 (1993-08-01), Velicki
patent: 5253419 (1993-10-01), Collot et al.
patent: 5349839 (1994-09-01), Weykamp et al.
patent: 5404630 (1995-04-01), Wu
patent: 5481892 (1996-01-01), Roper et al.
Metal Industry, Feb. 22, 1946, pp. 144-147.
"Blech", Nov. 1957, p. 160.

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