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Low Pressure Carburizing of Large Transmission Parts
September 1, 2009
Often, the required hardness qualities of parts manufactured from steel can only be obtained through suitable heat
treatment. In transmission manufacturing, the case hardening process is commonly used to produce parts with a hard and wear-resistant surface and an adequate toughness in the core. A tremendous potential for rationalization, which is only
partially used, becomes available if the treatment time of the case hardening process is reduced. Low pressure carburizing (LPC) offers a reduction of treatment time in comparison to conventional gas carburizing because of the high carbon
mass flow inherent to the process (Ref. 1).