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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.:

US 10196781 B1

PDFFull Text
Date of Patent:
Feb. 05, 2019

Filed:

Aug. 09, 2016

Hypereutectoid steel rail and preparation method thereof

Applicants:

Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd., Panzhihua, CN;

Pangang Group Panzhihua Steel & Vanadium Co., Ltd., Panzhihua, CN;

Inventors:

Zhenyu Han, Panzhihua, CN;

Ming Zou, Panzhihua, CN;

Hua Guo, Panzhihua, CN;

Yuan Wang, Panzhihua, CN;

Dadong Li, Panzhihua, CN;

Yong Deng, Panzhihua, CN;

Jun Yuan, Panzhihua, CN;

Assignees:

PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE CO., LTD., Panzhihua, CN;

PANGANG GROUP PANZHIHUA STEEL & VANADIUM CO., LTD., Panzhihua, CN;

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

C Melissa Koslow

Int. Cl.
CPC ...
C21D 1/60 (2006.01); C21D 8/00 (2006.01); C21D 9/04 (2006.01); E01B 5/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/42 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C21D 1/613 (2006.01);
U.S. Cl.
CPC ...
E01B 5/02 (2013.01); C21D 1/60 (2013.01); C21D 1/613 (2013.01); C21D 8/005 (2013.01); C21D 9/04 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/42 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01);
Abstract

The present invention discloses a method for preparing hypereutectoid steel rail in which the composition of the billets adopted is: C: 0.86-1.05 wt. %; Si: 0.3-1 wt. %; Mn: 0.5-1.3 wt. %; Cr: 0.15-0.35 wt. %; Cu: 0.3-0.5 wt. %; P: 0.02-0.04 wt. %; S: ≤0.02 wt. %; Ni: ½-⅔ of the content of Cu; at least one of V, Nb and Re; Fe and unavoidable impurities of the rest. The present invention further provides a hypereutectoid steel rail prepared by the foregoing method. By the hypereutectoid steel rail preparation method provided by the present invention, the high-carbon billets with a specific composition provided by the present invention can be made into hypereutectoid steel rails with good corrosion resistance and tensile properties.

Find Patent Forward Citations

Han, Zhenyu. (2019). Hypereutectoid steel rail and preparation method thereof (U.S. Patent No. 10196781). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10196781

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