controlled atmosphere heat treatment furnaces types

What are the types of controlled atmosphere heat treatment furnaces

The controlled atmosphere heat treatment furnace can be divided into two categories according to the different operation forms: periodic type and continuous type. In the two categories, the furnace can be divided into the following categories according to the different structure and movement modes of the furnace: periodic type furnace: such as sealed box type furnace (also called multi-purpose furnace) and well type furnace, which are suitable for various small batch production, bright quenching, bright annealing, carburizing and carbonitriding Etc.

Continuous furnace: such as pusher furnace, rotary hearth furnace and continuous controlled atmosphere carburizing production line, which can be used for bright quenching, tempering, carburizing, carbonitriding and other heat treatment. The basic structure of controllable atmosphere heat treatment furnace is basically the same as that of general heat treatment furnace, and its design and calculation method are the same as that of general heat treatment furnace.

Due to the controllable atmosphere to be introduced into the furnace, there should be some special requirements in the structure, which can be summed up in the following nine aspects:

1. Good furnace sealing;

2. Maintain positive pressure in the furnace;

3. The atmosphere in the furnace is uniform;

4. Use anti carburizing brick;

5. Suitable heating elements shall be used;

6. Set ventilation and exhaust device;

7. The front chamber, back chamber, quenching tank and furnace body are sealed;

8. Mechanical feeding device;

9. Set up safety explosion-proof device;