Microcomputer controlled electro-hydraulic servo expansion ring testing machine

The machine is mainly composed of main machine, pressure sensor, double ball chain extensometer, upper and lower locking plate, inner film, oil bladder, servo oil source, safety protection device, automatic sample feeding car, etc.; mainly used to determine the requirements of steel pipe to meet the requirements The circumferential total stress of the circumferential total strain. The main engine adopts the four-column structure of the lower cylinder of the cylinder, and the servo lock is used between the bottom plate and the top plate. The expansion ring pressure is controlled by high-pressure servo, which can be tested at a given strain rate. The double-ball chain extensometer measures the circumferential deformation of the sample and the pressure sensor measures the expansion ring pressure. The test is controlled by the special test software of the expansion ring. The process ends when the process reaches the preset total strain, and the local test process can achieve full automatic control. The machine is mainly composed of main machine, pressure sensor, double ball chain extensometer, upper and lower locking plate, inner film, oil bladder, servo oil source, safety protection device and automatic sample feeding car.
Load: 2000KN