What is the operation process of carburizing multi-purpose furnace?

What is the operation process of carburizing multi-purpose furnace?

The price of multi-chemical furnace is uneven, and it is also affected by the operating process. Next, let's take a look at the operating process of carburizing multi-purpose furnace. Nitriding furnace has the characteristics of low processing temperature, short time, small deformation of the workpiece, properties: high fatigue limit and good wear resistance.

1. The gas nitriding furnace before nitriding must be the workpiece that has been normalized or tempered first.

2. Scrub the surface of the gas nitriding furnace with gasoline and alcohol first, and there shall be no rust spots, oil and dirt.

3. After loading into the furnace, tighten the furnace cover compression bolt symmetrically.

4. The water inlet of the furnace tank and the furnace cover is passed into the cooling water for circulating water cooling. The lower end of the cooling water in the pipe on the lid of the gas nitriding furnace is the water inlet, and the upper end is the water outlet. The furnace tank is separately fed and drained. All the water pipes on the lid of the gas nitriding furnace can be connected in series according to the principle of low inlet and high inlet.

5. Before heating up the gas nitriding furnace, nitrogen exhaust should be sent first, and the discharge flow should be more than twice that of the use. After 10 minutes of exhaust, set the temperature control meter to 150℃, turn the automatic heating switch on, heat the gas nitriding furnace exhaust side at 150℃ to maintain 2h exhaust, and then set the temperature control meter to 530℃, reduce the ammonia flow rate, maintain the positive pressure in the furnace, and have small upward pressure of air flow at the exhaust port. When the furnace temperature rises to 530℃, constant temperature and constant flow nitriding 3-20h. Then increase the ammonia pressure, let the exhaust gas maintain a moderate pressure, nitriding 4-70h, and then reduce the ammonia pressure, nitrogen removal 1-2h, cut off the power supply, give a small amount of ammonia gas.