Deep nitriding method for 32cr3move material
A nitriding and deep-layer technology, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of no forming, deep nitriding layer depth, etc., and achieve the effect of controlling the deformation of parts
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[0022] The fixed ring gear used in an aero-engine is made of 32Cr3MoVE, and the maximum outer diameter reaches φ648mm. The ring gear is subjected to deep nitriding treatment, and the steps are as follows:
[0023] (1) Prepare the fixed ring gear to be deep-layer nitriding made of 32Cr3MoVE material;
[0024] (2) Quenching and tempering treatment: put the parts in a heating furnace and heat them up to 950°C for 1 hour and 55 minutes for oil cooling, then heat them up to 630°C for 3.5 hours and then air-cool them, then machine them to rough out the deep nitriding surface of the parts;
[0025] (3) Stabilization treatment: put the parts in the nitriding furnace, raise the temperature to 560°C, keep it warm for 11 hours, fill it with argon gas at the same time of heating up and keeping warm, the flow rate is 3L / min, cool down after keeping warm, the flow rate of argon gas during cooling When the temperature is greater than 6L / min and the temperature drops to 140°C, the argon gas w...
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