Hot Wall Retort Furnaces

What are hot wall retort furnaces?

Hot wall retort furnaces are designed for heat treatment processes where the workload must be protected from oxidation, scaling or unwanted surface changes. The retort separates the workload from the furnace chamber atmosphere and allows thermal processing in a controlled or protective atmosphere.

This category includes chamber and pit retort furnaces with or without forced atmosphere circulation for applications requiring stable temperature control and controlled process conditions.

Typical applications

• Heat treatment in protective atmosphere
• Annealing with reduced oxidation and scaling
• Tempering and stress relieving in controlled conditions
• Nitriding, carburizing and carbonitriding processes
• Heat treatment of tools, components and precision parts
• Processing where surface quality must be protected
• Batch heat treatment with controlled atmosphere conditions

How to choose a hot wall retort furnace

• Process atmosphere – according to the protective atmosphere required by your process
• Process temperature – according to your material and heat treatment process
• Retort type – chamber or pit design according to loading and process requirements
• Atmosphere circulation – with or without forced circulation depending on temperature uniformity needs
• Workload size and weight – based on part dimensions, batch size and load capacity
• Surface quality requirements – important for processes where oxidation or scaling must be reduced
• Process control and documentation – for traceability, validation and repeatable heat treatment results

Retort furnace series in this category

• PKRC retort chamber furnaces – chamber retort furnaces with forced atmosphere circulation
• PKR retort chamber furnaces – chamber retort furnaces without forced circulation
• SRC retort pit furnaces – pit-type retort furnaces for vertical loading and larger charge volumes

FAQ

When should I choose a retort furnace?
Choose a retort furnace when your process requires heat treatment in a controlled or protective atmosphere and the workload must be protected from oxidation, scaling or contamination from the furnace chamber atmosphere.

What is the difference between PKR and PKRC retort furnaces?
PKR retort chamber furnaces are designed without forced atmosphere circulation. PKRC retort chamber furnaces include forced circulation, which helps improve atmosphere movement and temperature uniformity inside the retort.

Which protective atmosphere can be used?
Hot wall retort furnaces can be configured for different protective atmospheres according to the process requirements. The final atmosphere configuration depends on the application and material being processed.

Can LAC customize a retort furnace?
Yes, retort furnaces can be configured according to retort size, atmosphere system, circulation requirements, loading method, control system and process documentation needs.