Metallographic preparation device for material science and engineering

The invention relates to the technical field of material science and engineering, and discloses a metallographic preparation device for material science and engineering, which comprises a metallographic preparation main body and a movable long plate, the outside of the metallographic preparation main body is fixedly connected with a fixed column II, the fixed column II is fixedly connected with a fixed column short fixed block, and the fixed column short fixed block is provided with a sliding mechanism. The sliding mechanism comprises a tail rotating handle, a motor gear and a rotating motor, the end, away from the short fixing block of the fixing column, of the tail rotating handle is fixedly connected with the movable long plate, a clamping fixing base is fixedly connected to the movable long plate, and a first clamping handle is fixedly connected to the clamping fixing base; and a second clamping handle is fixedly connected to the end, away from the first clamping handle, of the clamping fixing base, a met