The multichamber device belongs to pulsed methods of forming and is mainly intended for use in small-scale production. The process of forming is carried out under pressure of an elastic disk due to kinetic energy of the piston accumulated throughout the working cycle. The piston is accelerated under pressure of high-temperature gas, which is formed in the combustion chamber during the combustion of gaseous fuel mixes. The paper suggests design modifications of the existing device in order to expand its technological potential by increasing the kinetic energy of the piston. This is achieved due to end-to-end channel in the elastic disk and the piston connecting a head-end volume of the working cylinder with the combustion chamber, where the backpressure valve is installed at the end of the channel on the side of the combustion chamber. Keywordssheet forming, elastic medium, gas forming, kinetic energy, backpressure valve, multichamber device, fuel mix, gas pressureInternational Symposium on Engineering and Earth Sciences (ISEES 2018)

This article is devoted to expanding the technological capabilities of the gas-forming stamping method by increasing the pressure of combustion products acting on the surface of a workpiece stamped. Therefore, a scheme of a two-chamber device and a method for compressing the fuel mixture is proposed. The essence of the method is that of carrying out the stamping products under the high gas pressure, which is created by compression and subsequent combustion of the gaseous fuel mixture. To ensure the compression of the fuel mixture, the device is equipped with two combustion chambers separated by a piston. Due to this method, the pressure rises sharply. Under the influence of the combustion products' pressure, the workpiece is intensely deformed and fills the cavity of the matrix. This method of sheet stamping, implemented on a two-chamber device, will increase the gas pressure on the surface of the forged workpiece to 70-80 MPa at a fuel mixture pressure of 1 MPa, which ensures stamping of a variety range of parts in almost all branches of small-scale production related to metalworking.