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:
Feb. 12, 2019
Filed:
May. 22, 2012
Thore Lund, Gothenburg, SE;
Tobias Meyer, Mölndal, SE;
Staffan Larsson, Göteborg, SE;
Peter Neuman, Göteborg, SE;
Thore Lund, Gothenburg, SE;
Tobias Meyer, Mölndal, SE;
Staffan Larsson, Göteborg, SE;
Peter Neuman, Göteborg, SE;
Aktiebolaget SKF, Göteborg, SE;
Abstract
Method for heat treating a steel component () comprising the steps of: a) carbonitriding the steel component () at a temperature of 930-970° C., b) cooling the steel component (), d) re-heating the steel component () to a temperature of 780-820° C. and d) quenching the steel component (). The method comprises the step of either e) performing a bainite transformation at a temperature just above the martensite formation temperature, transforming 25-99% of the austenite into bainite at the temperature and then increasing the temperature to speed up the transformation of the remaining austenite into bainite, or f) holding the steel component () at an initial temperature (T) above the initial martensite formation temperature (Ms), and lowering the initial temperature (T) to a temperature (T) that is below the initial martensite formation temperature (Ms) but above the actual martensite formation temperature during the bainite transformation.