What is a Tempering Furnace?

A tempering furnace is a type of oven used for tempering, the process of heating to increase the toughness of iron-based alloys like cast iron or steel. Metals are usually placed in a tempering furnace after hardening, then heated to a specific temperature to remove excess hardness.

How Tempering Furnaces are Used

Tempering furnaces are used primarily to increase the toughness of metal or cast iron tools by decreasing the hardness of these products. These furnaces offer a range of temperatures because the amount of hardness removed depends on the metal’s composition and the desired outcome of the product. Springs require higher temperatures when placed inside the oven, while harder tools need to be tempered at lower temperatures.