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.
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Inventors:
HAN ZHENYU (CN)
ZOU MING (CN)
GUO HUA (CN)
TAO GONGMING (CN)
WANG YUAN (CN)
WANG CHUNJIAN (CN)
JIA JIHAI (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:
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:
CN106086663A | 2016-11-09 | |||
CN105018705A | 2015-11-04 | |||
CN104195433A | 2014-12-10 | |||
CN102220545A | 2011-10-19 | |||
JP2005171327A | 2005-06-30 |
Attorney, Agent or Firm:
CHENGDU HONGQIAO PATENT LAW OFFICE (CN)
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