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Patent Searching and Data


Title:
HYPER-EUTECTOID STEEL RAIL AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/010494
Kind Code:
A1
Abstract:
Provided are a hyper-eutectoid rail and a method for producing the same, comprising rolling a steel billet containing V and Ti. The steel billet contains 0.85% to 0.94% by weight of carbon on the basis of the total weight of the steel billet. The relationship among a rolling starting temperature T starting and a rolling finishing temperature T finishing and a vanadium content [V] and a titanium content [Ti] satisfies the following formula: T starting =1100+a([V]+5[Ti]), and T finishing =750+b([V]+5[Ti]), wherein, 500≤a≤800,300≤b≤500. [V] is 0.03% to 0.08% by weight, [Ti] is 0.011% to 0.02% by weight, and [V]+5 [Ti] is 0.12% to 0.14% by weight on the basis of the total weight of the steel billet. The hypereutectic rails prepared by this method have excellent toughness and comprehensive properties.

Inventors:
HAN ZHENYU (CN)
ZOU MING (CN)
GUO HUA (CN)
TAO GONGMING (CN)
WANG YUAN (CN)
WANG CHUNJIAN (CN)
JIA JIHAI (CN)
Application Number:
PCT/CN2017/085651
Publication Date:
January 18, 2018
Filing Date:
May 24, 2017
Export Citation:
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Assignee:
PANGANG GROUP PANZHIHUA IRON & STEEL RES INSTITUTE CO LTD (CN)
International Classes:
C22C38/12; C21D8/00; C22C38/02; C22C38/04; C22C38/14; C22C38/18
Foreign References:
CN106086663A2016-11-09
CN105018705A2015-11-04
CN104195433A2014-12-10
CN102220545A2011-10-19
JP2005171327A2005-06-30
Attorney, Agent or Firm:
CHENGDU HONGQIAO PATENT LAW OFFICE (CN)
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