Patent ID: 8875553

Claim:
A tool arrangement ( 1 ) for explosive forming of a work piece ( 12 ), comprising: a moulding tool ( 2 ) having a contact surface ( 20 ) defining an opening ( 17 ) connected to an intake area ( 15 ) into which the work piece ( 12 ) is introduced, the work piece ( 12 ) having a work piece cavity ( 13 ) whose wall has a closed shape in cross-section; an ignition tube ( 8 ) having a contact surface ( 18 ) corresponding in shape to said contact surface ( 20 ) of said moulding tool ( 2 ) and wherein said ignition tube ( 8 ) is configured for containing and igniting an explosive gas mixture ( 23 ) in order to generate a detonation front, wherein the ignition tube ( 8 ) and the work piece ( 12 ) directly abut each other to form a sealed path having a substantially constant cross-section for the propagation of the detonation front and wherein in a working position, said contact surface 120 ) of said moulding tool ( 2 ) and said contact surface ( 18 ) of said ignition tube ( 8 ) cooperate to clamp the workpiece therebetween: and means ( 28 ) for at least partially filling the work piece cavity ( 13 ) with liquid ( 26 ), wherein the explosive gas mixture ( 23 ) is in direct fluid communication with the surface of the liquid ( 22 ) prior to ignition.