---
title: "Internally Heated Salt Bath Furnaces"
url: "https://uptonindustries.com/products/salt-bath-furnaces/internally-heated/"
description: "Internally heated salt bath furnaces for non-chloride salts, with electric immersion heaters, air- or water-cooled electrodes, and gas-fired radiant tubes."
site: "Upton Industries"
updated: "2026-09-25T03:54:29+00:00"
breadcrumbs: "Home > Products > Salt Bath Furnaces > Internally Heated Salt Bath Furnaces"
---

# Internally Heated Salt Bath Furnaces

Internally heated salt bath furnaces for non-chloride salts, with carbon-steel or stainless-steel liners.

## Upton Internally Heated Steel-Lined Salt Bath Furnaces

![Internally Heated Salt Bath Furnaces](https://uptonindustries.com/wp-content/uploads/2018/04/internally-heated-salt-bath-furnaces.jpg)

*Fig. 1 Internally Heated Salt Bath Furnace*

Upton builds internally heated salt bath furnaces for non-chloride salt applications. Liners are available in carbon steel or stainless steel to suit operating conditions.

## Immersion Heating Method

Lower-temperature applications can use electric immersion heaters. At elevated temperatures, furnaces can use air- or water-cooled electrodes with transformers. Gas-fired units use radiant tubes.

## Thermal Process Applications

Upton internally heated salt bath furnaces are used for ferrous and non-ferrous processes including tempering, case hardening, caustic bath cleaning, paint stripping, and vinyl or plastic curing.

## Processes

- [Annealing](https://uptonindustries.com/application/annealing/)
- [Austempering](https://uptonindustries.com/application/austempering/)
- [Curing](https://uptonindustries.com/application/curing/)
- [Degreasing](https://uptonindustries.com/application/degreasing/)
- [Descaling](https://uptonindustries.com/application/descaling/)
- [Drawing](https://uptonindustries.com/application/drawing/)
- [Ferritic Nitriding](https://uptonindustries.com/application/ferritic-nitriding/)
- [Glass Strengthening](https://uptonindustries.com/application/glass-strengthening/)
- [Laboratory Operations](https://uptonindustries.com/application/laboratory-operations/)
- [Marquenching](https://uptonindustries.com/application/marquenching/)
- [Martempering](https://uptonindustries.com/application/martempering/)
- [Metal Cleaning](https://uptonindustries.com/application/metal-cleaning/)
- [Neutral Hardening](https://uptonindustries.com/application/neutral-hardening/)
- [Nitinol Processing](https://uptonindustries.com/application/nitinol-processing/)
- [Nitinol Shape Setting](https://uptonindustries.com/application/ni-tn-memory-shaping-setting/)
- [Paint Stripping](https://uptonindustries.com/application/paint-stripping/)
- [Precipitation Hardening](https://uptonindustries.com/application/precipitation-hardening/)
- [Silver Annealing](https://uptonindustries.com/application/silver-annealing/)
- [Stress Relieving](https://uptonindustries.com/application/stress-relieving/)
- [Tempering](https://uptonindustries.com/application/tempering/)
- [Wire Patenting](https://uptonindustries.com/application/wire-patenting/)

## Spare parts

Upton carries these parts for this furnace:

- [Immersion Heaters](https://uptonindustries.com/products/replacement-spare-parts/#part-immersion-heaters)

[All replacement & spare parts](https://uptonindustries.com/products/replacement-spare-parts/)

## Downloads

- [Internally Heated Salt Bath Furnaces (Electrodes)](https://uptonindustries.com/wp-content/uploads/2018/04/upton-internally-heated-salt-bath-furnace.pdf)
- [Internally Heated Salt Bath Furnaces (Heaters)](https://uptonindustries.com/wp-content/uploads/2018/04/upton-internally-heated-salt-bath-furnace-heaters.pdf)

Upton Industries · Roseville

Upton builds the furnace

[586-771-1200](tel:+15867711200)

Kolene Corporation · Detroit

Kolene supplies the salts and heat-treating chemicals

[313-273-9220](tel:+13132739220) [Buy salt from Kolene](https://www.kolene.com/product/heat-treat-chemicals/)

Upton Industries, A Kolene Company.

## Request a quote for an Internally Heated Salt Bath Furnace built to your spec

Tell us your part sizes, load weight, process temperature and the salt you plan to run.

[Request a quote](https://uptonindustries.com/contact/?need=equipment&equipment=salt-bath&ref=Internally%20Heated%20Salt%20Bath%20Furnaces)