Device for explosive gas forming

A device for explosive gas-forming, comprising:

• a first plate;
• a second plate located parallel to said first plate and connected thereto;
• a die for supporting a blank, said die being mounted on said first plate;
• an explosion chamber having a pair of sides one of which is adjacent to said die, said explosion chamber being fixed on said second plate;
• a detonation tube connected to the opposite side of said explosion chamber;
• a gas mixture igniter mounted in said detonation tube;
• means for connecting said explosion chamber to a gas mixture source;
• a part shaped as a body of revolution set in said explosion chamber defining an annular space formed between the external surface of said part and internal side surface of said explosion chamber;
• said annular space being filled with a gas mixture;
• the cross-sectional area of said annular space in the chamber cross-section being varied in the direction of propagation of the detonation wave front so as to preserve detonation conditions of the gas mixture burning in said explosion chamber, the part is hollow and barrel-shaped with a side wall produced from a resilient material, said part being adaptable for partial filling with liquid under pressure whose value is selected according to the composition and initial pressure of the gas mixture.

A device for explosive gas-forming, comprising:

• a first plate;
• a second plate located parallel to said first plate and connected thereto;
• a die for supporting a blank, said die being mounted on said first plate;
• an explosion chamber having a pair of sides one of which is adjacent to said die, said explosion chamber being fixed on said second plate;
• a detonation tube connected to the opposite side of said explosion chamber;
• a gas mixture igniter mounted in said detonation tube;
• means for connecting said explosion chamber to a gas mixture source;
• a part shaped as a body of revolution set in said explosion chamber defining an annular space formed between the external surface of said part and internal side surface of said explosion chamber;
• said annular space being filled with a gas mixture;
• the cross-sectional area of said annular space in the chamber cross-section being varied in the direction of propagation of the detonation wave front so as to preserve detonation conditions of the gas mixture burning in said explosion chamber, the part having a side surface equidistant from the internal surface of the explosion chamber, and through-ducts running in the body of the part in the direction of propagation of the detonation wave front, said ducts being selectively closed to ensure local straining of the blank.