Patent ID: 6098262
Filing Date: 2000-08-08
Classification: B21D,B23K,Y10T

Abstract:
Process for manufacturing a hollow body from two flat metal bars disposed on one another, comprising: seam-welding the metal bars with a parting line defined therebetween to produce a plate composite; trimming the plate composite by beam cutting a seam-welded area thereof to produce trimmed edges; charging the plate composite into a high pressure forming tool such that the trimmed edges are situated within a die sinking of the forming tool; closing the forming tool to clamp the plate composite only in an area of a pressure fluid inlet of the forming tool; introducing high pressure fluid through the pressure fluid inlet into a parting line between the metal bars; widening the metal bars of the plate composite until they are conformed to a contour of the die sinking; and then cutting off a fluid inlet area of the plate composite after the widening.