Low-pressure vacuum carburizing is a state-of-the-art thermal process where carburizing is effected under very low pressures (7-13 mbar). Parts are first heated in vacuum to above the transformation temperature of the alloy and then exposed to carbon-carrying gas, or gas mixtures, under partial pressure. Nitrex has developed a revolutionary process called “Pulse-Pressure”, a method quickly becoming the industry standard.
Relative to conventional carburizing, the main advantages of the method are:
The basic aspects oF carburizing are described in the Conventional Carburizing section.
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