FIELD: chemical-thermal treatment.
SUBSTANCE: to improve tribological properties of nitrided steel articles, the method of making steel articles involves nitriding (210) of a steel article at nitrification temperature in range of 350–650 °C to obtain a nitrided steel article. Nitrided steel items are hardened (220) in reactive hardening oil at nitrification temperature. Reactive hardening oil contains at least one of S, P, B, Mo and W. Thus hardening additionally contains coating (222) of nitrated steel item with solid lubricant containing at least one of S, P, B, Mo and W. Also disclosed are a device for making steel articles, hardening oil and a steel article obtained using said method.
EFFECT: disclosed are steel articles coated with solid lubricant, method and device for their production, and hardening oil used in their production.
25 cl, 9 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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