Method for producing a nitrided part of an aircraft turbomachine

2:

• The method according to claim 1, wherein the nitriding step lasts less than 150 hours.

3:

• The method according to claim 2, wherein the nitriding step lasts less than 100 hours.

4:

• The method according to claim 1, wherein the nitriding step is performed at a temperature is comprised between 450° C. and 550° C.

5:

• The method according to claim 1, wherein a nitriding steel from which the a semi-finished blank is made includes nitriding alloying elements and a carbon content comprised between 0.15% and 0.8%, preferably between 0.15% and 0.65%.

6:

• The method according to claim 1, wherein the nitriding step is performed on a nitriding depth which is less than 1.5 mm and which is preferably comprised between 0.1 mm and 1 mm.

7:

• The method according to claim 1, wherein the preliminary heat treatment carried out on a blank or on a steel bar from which said blank is obtained, is a hardening and tempering treatment.

8:

• The method according to claim 1, wherein, a surface preparation by sandblasting and/or phosphating is carried out prior to the nitriding step.

9:

• The method according to claim 1, wherein a finishing operation is carried out on the nitrided steel part, said polishing operation being performed through grinding and/or electrochemical polishing and/or tribofinishing.

10:

• The method according to claim 1, wherein the nitrided steel part is toothed, said nitrided steel part comprising teeth and wherein the induction hardening step takes place on all the teeth simultaneously or locally.