The vertical
quenching furnace comprises a deep well
heating furnace, a
quenching liquid
pool, a feeding port, a discharging port, a heating wire and a communicating structure, the feeding port is formed in the top of the deep well
heating furnace, the discharging port is formed in the bottom of the deep well
heating furnace, the top of the
quenching liquid
pool is connected with the discharging port of the deep well heating furnace, and the heating wire is installed on the inner wall of the deep well heating furnace. The furnace
pipe is of a detachable structure, the communicating structure is connected with the deep well heating furnace and the quenching liquid
pool, the heights and sizes of the quenching liquid pool and the deep well heating furnace are adjusted according to the size of a workpiece, and through the design of vertical hoisting and closed connection, the
contact time of the workpiece and air in the process from discharging to quenching is effectively shortened, the oxidation risk is reduced, and the quenching quality is improved; the device has the advantages of reducing
temperature difference and
hardness difference, improving workpiece quality, being environment-friendly, safe and the like, and is suitable for quenching requirements of different workpieces in different scenes.