Composite carburizing and quenching heat treatment method of gear
A heat treatment method and compound infiltration technology, applied in the field of heat treatment, can solve the problems of reducing wear resistance, toughness and comprehensive mechanical properties of gears, low surface hardness of gears, and high austenite content, so as to improve comprehensive mechanical properties and improve Wear resistance, effect of refining martensitic needles
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[0039] The purpose, advantages and characteristics of the present invention will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are only typical examples of applying the technical solutions of the present invention, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the protection scope of the present invention.
[0040] The compound carburizing and quenching heat treatment method of locomotive traction gear disclosed in this embodiment is as follows figure 2 As shown, it includes the following steps:
[0041] S1, carburizing step: put the locomotive traction gear into a carburizing furnace with an initial temperature of about 900°C, heating to 920°C, and passing carburizing agent into the carburizing furnace to form a carburizing atmosphere. The carburizing agent is methanol, ethane , Propane, ethanol, propanol, ethyl acetate, any one or a combination of ...
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