Disclosed is a multifunctional
vacuum furnace. The multifunctional
vacuum furnace is characterized in that the front portion of the body of a heating chamber is provided with a movable front left
air door and a movable front right
air door, a rear left reversing
air door and a rear right reversing air door are symmetrically installed at the air
flue end outside the heating chamber, air door air cylinders are installed outside a furnace shell, and air cylinder
piston rods penetrate through the furnace shell to be connected with air door pin shafts through sealing structures. The multifunctional
vacuum furnace has the advantages that in the heating process, the front left air door and the front right air door are closed, no air through hole is formed,
energy loss in the heating process is avoided, energy is saved, and it is ensured that heating is more uniform; and in the cooling process, the opening degree of the front left air door and that of the front right air door are large, meanwhile, the rear left air door and the rear right air door can achieve reversing, in other words,
airflow alternately flows in a reversing mode inside the heating chamber, outside the heating chamber, on the left of the heating chamber and on the right of the heating chamber, reversing time can be set, accordingly, workpieces are uniformly cooled, the
cooling speed is increased, and the furnace
discharge time is shortened. The problem that production efficiency is affected is solved,
energy consumption is lowered to minimum, product performance is higher, and production efficiency is improved.