Sheet metal-hollow body manufacturing method, involves producing sheet metal-hollow body from pre-form by filling compressed air or pressurized liquid between lower sheet metal and upper sheet metal, which are connected by welding seam

摘要

The method involves producing a sheet metal-hollow body from a pre-form (3) by filling compressed air or pressurized liquid between a lower sheet metal (1) and an upper sheet metal (2), which are connected by a welding seam (4). The pre-form is fastened to a cover (10) by a conical opening (5) that is formed at the sheet metals. A conical segment (6) is fastened with lateral inclination when the opening in the cover and the conical opening of the sheet metal are fastened by a conical pressure element (7). An independent claim is also included for a tool mold.