Title:
MEDIUM-STRENGTH STEEL RAIL AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/077838
Kind Code:
A1
Abstract:
A medium-strength steel rail. The weight percentages of the chemical components of the medium-strength steel rail are: 0.70-0.90% of carbon, 0.08-0.65% of silicon, 0.69-1.31% of manganese, 0.10-0.25% of chromium, less than or equal to 0.020% of phosphorus, less than or equal to 0.020% of sulfur and 96.85-98.41% of iron. According to the method for producing a medium-strength steel rail in the present invention, the steel rail hardness of the produced medium-strength steel rail is 350-370 HB, the abrasion loss is less than or equal to 0.40 g, the contact fatigue life is greater than or equal to 50,000 times, and the degree of opening of a 610 mm-long steel rail web is less than or equal to 3.0 mm/400 mm.
Inventors:
YUAN JUN (CN)
DENG YONG (CN)
CHEN CHONGMU (CN)
WANG YUAN (CN)
DENG YONG (CN)
CHEN CHONGMU (CN)
WANG YUAN (CN)
Application Number:
PCT/CN2022/102696
Publication Date:
May 11, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
PANGANG GROUP PANZHIHUA IRON & STEEL RES INSTITUTE CO LTD (CN)
International Classes:
C22C38/02; B21B1/085; C21D8/00; C21D9/04; C21D11/00; C22C38/04; C22C38/18; E01B5/02
Foreign References:
| CN113981325A | 2022-01-28 | |||
| CN112195413A | 2021-01-08 | |||
| CN1754973A | 2006-04-05 | |||
| CN106086622A | 2016-11-09 | |||
| CN112267063A | 2021-01-26 | |||
| CN105040532A | 2015-11-11 |
Attorney, Agent or Firm:
LIAN & LIEN IP ATTORNEYS (CN)
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