Batch furnaces are widely used in heat treating processes.
They are designed to handle a batch of components at a time.
Components are charged into the furnace and heated from room temperature to a predetermined maximum temperature.
They are then kept at that temperature for a specified time.
Afterward, they are cooled at a specified rate.
The next batch of components undergoes the same heat treatment process.
Batch furnaces can be used for various types of heat treatment cycles.
These include carburizing, hardening, annealing, nitriding, normalizing, stress-relieving annealing, and more.
They can be operated with or without a controlled atmosphere.
Batch furnaces are often used for low volumes of parts.
They are also suitable for parts that require deep cases or long cycle times.
Parts that are difficult to handle in continuous furnaces are often processed in batch furnaces.
Large-sized parts that are only a few in number can also be processed in batch furnaces.
Batch furnaces can be of horizontal or vertical type.
Some commonly used batch furnaces include:
- Box-type batch furnaces
- Bogie-hearth furnaces
- Salt bath furnaces
- Muffle furnaces
- Pit furnaces
- Sealed-quench furnaces
- Bell furnaces
- Tempering furnaces
- Vacuum furnaces
- Fluidized-bed furnaces
Batch furnaces are less costly compared to continuous furnaces.
They can be tailored to specific applications.
Batch furnaces are generally less complex to operate and maintain.
However, they require more work in process to form groups of components for loading into the furnace.
They also require fixtures such as baskets or racks to group parts together within the furnace.
Continue exploring, consult our experts
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