Improving the design of a dual-chamber device for gas forming
Small-scale production is typical for many industries. Therefore, it is very important to increase its efficiency. One of the solutions to this problem is using gas pressure forming. A dual-chamber device for gas pressure forming significantly increases gas pressure acting on the surface of a formed blank by pre-compression and combustion of the fuel mixture in the cavity adjacent to the blank. This paper suggests improving the design of a dual-chamber device for gas forming in order to increase its technical and economic characteristics. This is achieved by transferring the ignition spark plug from the upper chamber to the cavity adjacent to the formed blank and optimizing the design parameters of the device. In this case, if the pressure of the fuel mixture is 1 MPa, the gas pressure acting on the surface of the formed blank is 70... 80 MPa. This approach makes it possible to fabricate a wide range of parts by gas forming.