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. 24, 2015
Filed:
Jun. 17, 2011
Applicants:
Matthew Yao, Belleville, CA;
Louw Dejong, Maple Ridge, CA;
Danie Dewet, Kingston, CA;
Inventors:
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 15/00 (2006.01); C22C 19/07 (2006.01); B22F 3/10 (2006.01); F16L 9/14 (2006.01); B22F 7/08 (2006.01); C22C 32/00 (2006.01); B22F 5/10 (2006.01);
U.S. Cl.
CPC ...
C22C 19/07 (2013.01); B22F 7/08 (2013.01); C22C 32/0052 (2013.01); B22F 5/106 (2013.01); B22F 2999/00 (2013.01);
Abstract
A pipe or pipe fitting for use in harsh environment such as in petroleum refinery processes for cracking petroleum feedstocks, the pipe or pipe fitting comprising a 0.25 to 2.5 mm thick Co-based metallic coating on an internal surface of the pipe body, the coating having a hypereutectic microstructure characterized by carbides in a cobalt matrix and an average carbide grain size of less than 50 microns, and the Co-based metallic composition overlays the pipe internal surface at an interface which is free of heat-affected zone and which has a diffusion zone which is less than 0.002 inches thick.