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:
Jul. 30, 2019
Filed:
Jun. 26, 2015
Applicants:
Thyssenkrupp Steel Europe Ag, Duisburg, DE;
Thyssenkrupp Ag, Essen, DE;
Inventors:
Volker Smukala, Bochum, DE;
Ralf Sünkel, Ratingen, DE;
Assignee:
ThyssenKrupp AG, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 19/08 (2006.01); B21D 22/02 (2006.01); B21D 37/16 (2006.01); C21D 1/673 (2006.01); C21D 9/34 (2006.01);
U.S. Cl.
CPC ...
C21D 1/673 (2013.01); B21D 19/088 (2013.01); B21D 22/022 (2013.01); B21D 37/16 (2013.01); C21D 9/34 (2013.01);
Abstract
A method and device for producing a press-quenched part having a rim hole with a collar formed at the periphery of the rim hole includes inserting a temperature-controlled die into the rim hole of the part. The temperature of the temperature-controlled die is controlled such that the temperature of the part in a region of the collar is held above the martensite start temperature of the material from which the part is made. While the temperature of the collar is being held above the martensite start temperature, the remainder of the part is press quenched.