Method and mould arrangement for explosion forming

摘要

The invention is intended to improve a method for explosive forming of a workpiece by means of gas explosion, in which the workpiece is arranged in a intake area of a moulding tool, wherein the intake area is at least partially filled with liquid and the explosion is triggered by ignition of an explosive gas mixture, to the effect that the method is suitable and simplified for mass production. This object is solved by a method for explosive forming of a workpiece by means of gas explosion, in which the workpiece is arranged in a intake area of a moulding tool, wherein the intake area is at least partially filled with liquid and the explosion is triggered by means of ignition of an explosive gas mixture, in which the explosive gas mixture is provided at least partially above the surface of the liquid before the ignition.

主权项

1. A method for explosive forming of a work piece (12) having an interior by means of a gas explosion, comprising: arranging the work piece (12), including a work piece holding area (21), in an intake area (15) of a moulding tool (2); at least partially filling a work piece cavity (13), whose wall has a closed shape in cross-section, with liquid (26), providing in an ignition tube (8) an explosive gas mixture (23) in direct fluid communication with a surface of the liquid (22) prior to ignition, wherein the ignition tube (8) and the work piece (12) together form a sealed path having a substantially constant cross-section; and wherein the ignition tube (8) is brought into abutment with the work piece holding area (21) prior to triggering the explosion, triggering the explosion by igniting the explosive gas mixture (23) in the ignition tube (8) in order to form a detonation front propagating through the ignition tube and into the interior of the work piece (12).