- Process
- Stress Relieving
- Equipment types
- Salt bath furnacesBatch, specialty & pit furnaces
- Systems
- 6
Plan your equipment
Send part dimensions, load, atmosphere and production pattern, and we’ll discuss whether a salt bath, batch, belt or pit furnace suits your stress relieving.
Salt bath furnaces
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Externally Heated Salt Pot Furnaces
Externally heated salt pot furnaces with carbon-steel or stainless-steel liners, electric resistance heaters or Upton Hurricane gas burners, for intermittent service.
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Internally Heated Salt Bath Furnaces
Internally heated salt bath furnaces for non-chloride salts, with carbon-steel or stainless-steel liners.
Externally or internally heated
Both are steel-lined salt bath furnaces. They differ in where the heat enters the salt: through the wall of a pot, or directly in the bath.
| Externally Heated Salt Pot Furnaces | Internally Heated Salt Bath Furnaces | |
|---|---|---|
| Heat enters | From outside the pot, through its wall | In the salt, from heat sources immersed in the bath |
| Electric | Electric resistance heaters | Immersion heaters for lower-temperature work; air- or water-cooled electrodes with transformers at elevated temperatures |
| Gas | Upton Hurricane tangential burners, designed to minimize flame impingement on the salt pot | Radiant tubes |
| Suited to | Intermittent service | Non-chloride salt applications |
| Liner | Carbon steel or stainless steel, selected for the operating conditions | |
| Drawings (PDF) | ||
To quote either furnace, send us:
- Part sizes
- Load weight
- Process temperature
- The salt you plan to run
Batch, specialty & pit furnaces
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Box Furnaces
Electric or gas-fired box furnaces with fan recirculation; a charge-table model is available as the U-BCE.
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Car Bottom Furnaces
Electric or gas-fired car-bottom furnaces with fan recirculation and a ColdCar loading hearth.
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Belt Furnaces
Electric or gas-fired continuous belt furnaces with fan recirculation and variable-speed belt drives.
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Pit Type Furnaces
Electric or gas-fired pit furnaces with stainless-steel retorts and bottom-mounted circulation fans.