Patent ID: 7137201
Filing Date: 2006-11-21
Classification: B21D,B23K,B62D,C21D,Y10T

Abstract:
1. Method for the production of a three-dimensionally shaped structural part having a basic metal sheet and at least one smaller locally arranged reinforcing metal sheet, comprising connecting the basic metal sheet, in a flat state or in an incompletely formed preforming state, to the reinforcing metal sheet at a point predetermined for a subsequent reinforcing point, and subsequently joint forming the parts of a resulting patched composite metal sheet structure by an openable and closeable forming tool in a forming press, wherein heating of the patched composite metal sheet structure before the joint forming to a temperature which is above a forming temperature of the material, then forming the patched composite metal sheet structure in a hot state into a desired shape with subsequently cooling thereof in the forming tool in a closed state, or in a following fixing tool, with a desired forming state being fixed mechanically, and parts of the patched composite sheet metal structure are heated to above a structural transformation temperature of the material above which the material structure is in an austenitic state.