High-temperature in-situ stretching device based on vacuum cavity environment

The high-temperature in-situ stretching device based on the vacuum cavity comprises a heating part, a stretching part, a vacuum part and a display part, the heating part comprises a base, a furnace body and a heating wire, the stretching part comprises a base, a micro motor, a transmission worm, a lead screw, a supporting sliding table, a clamping piece and a sample, and the vacuum part comprises the vacuum cavity and a vacuum pump. The display part comprises a data line, a video extensometer, a display screen and a rotary translation clamping device, the four sets of heating parts are distributed in the middle of the stretching device, a heating base and the clamping part are provided with cooling backflow devices for cooling to prevent the stretching device from being damaged by too high temperature, and the vacuum cavity is provided with two observation lenses. A vacuum high-temperature experiment environment is created, real-time observation is carried out through the video extensometer, and the function