The heating furnace is a kind of equipment dedicated to heat treatment of product materials and produced workpieces. Different from the drying equipment, the main purpose of the heating furnace is not to heat general materials, but to heat metal products at a high temperature without oxidation or less oxidation so that they can be further processed.

With the development of science and technology, there are more and more types of heating furnaces, the most common of which are tube heating furnaces and regenerative heating furnaces. The working principle of the heating furnace is to work in a phase-change heat mode. In a closed container with no non-condensable gas, the intermediate substance is heated by the heat generated by the combustion of the fuel, such as turning water into water vapor, and then the water vapor enters the gas phase. The space, and then reach the outlet to transfer the heat it possesses to the working fluid in the condensing heat exchanger coil. Then the water vapor is condensed into liquid and falls back to the liquid phase space, where it is heated and evaporated by the fuel combustion again, and then continuously removes heat for the working fluid. Heating furnaces are divided into fuel heating furnaces, resistance heating furnaces, induction heating furnaces, microwave heating furnaces, etc.

Applications in petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, pharmaceuticals and many other industries.