Blank guided forming

Details Blank guided forming Blank guided forming

2005-03-22

2005-03-22

Tolan, Ed (Department: 3725)

Metal deforming

With temperature modification of tool or of specified...

Cooling

C072S342940, C072S379200

Reexamination Certificate

active

06868708

ABSTRACT:
The invention relates to workpiece control shaping of metal, preferably in the form of plates or bands, which metal workpiece has a high tensile limit, preferably about 1000 N/mm2, and is intended to be further shaped. Along predetermined folding notches or zones across the workpiece, the tensile limit of the material is reduced by heating to a tensile limit, which is substantially lower than that of adjacent base material, and when the workpiece has cooled it is subjected to subsequent bending, folding, or shaping operations to provide a two- or three-dimensional shape/extension of the workpiece along the treated folding notches or zones.

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International Search Report PCT/SE01/00392 dated May 31, 2001.

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