This equipment uses heat-resistant stainless steel as the air duct, and the material rack adopts high-speed lifting, which can enter the water tank within 3-6 seconds The electric push rod of the furnace cover is lifted and sealed strictly to isolate the workpiece material from the outside air. During the heating and insulation process, there is a high-strength convection fan inside the furnace, which forms a strong convection cycle inside the furnace, promoting uniform furnace temperature. The temperature difference at each point inside the furnace can be controlled within+1 ℃, thereby achieving uniform physical and mechanical properties of the annealed material.