Solid lubricant-coated steel articles, method and apparatus for manufacturing thereof and quenching oil used in the manufacturing
AssigneesApplied Nano Surfaces Sweden AB, Bodycote VäRmebehandling AB
InventorsMikael Berg, Mikael Fällström, Boris Zhmud
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Abstract
A method for manufacturing of steel articles comprises nitriding (210) a steel article at a nitrification temperature in the interval 350-650° C., giving a nitrided steel article. The nitrided steel article is quenched (220) in a reactive quenching oil from the nitrification temperature. The reactive quenching oil comprises at least one of S, P, B, Mo and W. Thereby, the quenching additionally comprises coating (222) of the nitrided steel article by a solid lubricant comprising at least one of S, P, B, Mo and W. An apparatus for manufacturing of steel articles, a quenching oil and a steel article produced by the method are also disclosed.
Claims6
A method for manufacturing of steel articles, comprising the steps of:
- nitriding a steel article at a nitrification temperature in the interval 350-650° C., giving a nitrided steel article;
- and
- quenching said nitrided steel article in a reactive quenching oil from said nitrification temperature;
- said reactive quenching oil comprising at least one of S, P, B, Mo and W;
- whereby said step of quenching additionally comprises coating of said nitrided steel article by a solid lubricant comprising at least one of S, P, B, Mo and W.
Dependencies are inferred from the claim text.