The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2019
Filed:
Mar. 29, 2016
Sikorsky Aircraft Corporation, Stratford, CT (US);
Jonathan Buckley, Stratford, CT (US);
Bruce D. Hansen, Shelton, CT (US);
SIKORSKY AIRCRAFT CORPORATION, Stratford, CT (US);
Abstract
A method of carburizing a steel component having a composition of Fe-16.3Co-7.5Ni-3.5Cr-1.75Mo-0.2W-0.11C-0.03Ti-0.02V includes generating a low pressure vacuum in a carburization furnace having the steel component therein, heating the steel component to an optimal carburization temperature while in the low pressure vacuum, performing a boost cycle to introduce carbon rich gas into the carburization furnace while the steel component is at the optimal carburization temperature and in the low pressure vacuum, and performing a diffuse cycle by ceasing introduction of the carbon rich gas into the carburization furnace to allow for diffusion of the carbon into the steel component to occur and while the steel component is at the optimal carburization temperature and in the low pressure vacuum. The boost cycle and the diffuse cycle are repeated to achieve a carbon content at a surface of the steel component of between 0.40 wt. % and 0.55 wt. %.