Tempering furnaces are used in various heat treatment applications, including those requiring an inert atmosphere. The recirculation blower provides high-speed vertical downward airflow for excellent heat transfer. Precision microprocessor-based temperature control and energy-saving insulation maximize the performance of these rugged devices.
Steel is used in products in almost every industry, and undergoes various heat treatment processes before reaching the final product manufacturing stage. Tempering is a heat treatment process used to reduce the brittleness of hardened steel and eliminate internal strain caused by other metal treatment processes. Although the tempering process is very old, dating back to at least 1200 to 1100 BC, tempering is still one of the most advanced steel strengthening methods.
Heat treatment will change the chemical composition of the metal surface. Heating steel to a critical temperature produces austenite, a metal alloy that combines carbon and iron to give steel strength. Quenching produces martensite, which is a steel with a hard crystalline needle-like structure that can lead to brittleness. The tempering process reduces the brittle quality of martensite by transforming the needle-like structure into a cluster-like structure that is not easy to break, thereby improving the quality of the steel used to manufacture the final product.