Carburizing is a heat treatment process used to increase the carbon content on the surface of a low-carbon steel or iron object in order to make it harder and more wear-resistant. This process involves heating the metal object in a carbon-rich atmosphere, such as methane or propane, at high temperatures for a prolonged period of time.
During the carburizing process, carbon diffuses into the surface of the metal and forms a layer of high-carbon steel, also known as case-hardening. This layer is typically only a few thousandths of an inch thick, but it greatly increases the surface hardness and wear resistance of the metal.
Carburizing is commonly used in the production of gears, bearings, and other parts that require high wear resistance. The process can be performed using a variety of techniques, including gas carburizing, liquid carburizing, and vacuum carburizing, each of which has its own advantages and disadvantages.
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