Gear quenching device for powder metallurgy

The invention discloses a gear quenching device for powder metallurgy, and relates to the technical field of gear quenching, the gear quenching device comprises a water tank, the top of the water tank is fixedly connected with a heating part, the inner wall of the water tank is slidably connected with a moving part and a placing part, and the placing part is used for placing a gear; the bottom of the water tank is fixedly connected with a collecting part, and the bottom of an inner cavity of the water tank is fixedly connected with the bottom of a placing part. By arranging the clamping mechanism, a gear is placed on a placing plate, two clamping arms are extruded, the gear is placed on the placing plate, an extrusion ring abuts against the inner wall of the gear, and meanwhile the clamping arms are loosened; the two clamping arms are driven to reset through the elastic ring, meanwhile, the clamping blocks abut against the outer surface of the gear to clamp and fix the gear, and the situation that the gear de