Chamber Heat Treatment Furnace (Box Furnace)

Classification Based on Furnace Hearth Mechanism

1- Fixed Hearth

This type is usually used for heat treatment of low-volume parts or high-volume parts with low weight that can be loaded and unloaded easily.

This method reduces manufacturing costs and, consequently, lowers the final cost of the furnace.

2- Movable Hearth (Shuttle)

In this type of furnace, the hearth is pulled out of the main chamber by means of a gear motor using chains or wire ropes.

With this mechanism, loading and unloading parts is easier compared to the fixed-hearth type.

Manufacturing Methods

Box furnaces are designed and manufactured according to the door mechanism in the following ways:

1- Top-Lift Door Furnaces (Guillotine Type)

One of the advantages of this door mechanism is the easier loading and unloading of materials on the carriage. In other words, in this method, access to all sides of the carriage is easily possible.

It should be noted that manufacturing this mechanism is costly; therefore, the final price of the product is higher than that of heat treatment furnaces with other door mechanisms.

2- Hinged Door Furnaces

These can be designed and manufactured in two types: single-leaf and double-leaf (cabinet type).

In this type of furnace as well, access to all sides of the carriage is possible.

3- Fixed Door Furnaces (Mounted on the Carriage)

One of the advantages of this mechanism is the complete sealing of the furnace door, as well as the simultaneous opening and خروج of both the door and the carriage through a single mechanism, which makes the equipment more economical.

In this model of furnace, access to three sides of the carriage is limited.

In these furnace models, due to the enclosed heat treatment chamber, fuel consumption is highly optimized and energy loss is minimized as much as possible.