Title:
HIGH WEAR RESISTANCE STEEL FOR COAL MINING AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/155447
Kind Code:
A1
Abstract:
A high wear resistance steel for coal mining and a production method therefor. Chemical components and mass percentages are as follows: C: 0.15-0.30 %, Si: 0.20-0.50 %, Mn: 0.90-1.40 %, P ≤ 0.015 %, S ≤ 0.0020 %, Nb: ≤ 0.030 %, V: ≤ 0.020 %, Ti: 0.008-0.015 %, Cr: 0.30-0.90 %, Ni ≤ 0.60 %, Mo: 0.20-0.50 %, Al: 0.025-0.050 %, B: 0.0010-0.0020 %, Mg: 0.0010-0.0018 %, N ≤ 0.0045%, H ≤ 0.0002%, and the balance being Fe and unavoidable impurities. The steel grade of a product is 360-500 HBW, and the thickness specification is 3-180 mm. By means of micro-alloying dispersed particles of a magnesium metallurgy technique, the wear resistance of the product is improved.
Inventors:
QIAO MINGLIANG (CN)
ZHAI DONGYU (CN)
YANG LIU (CN)
ZHANG YUANYU (CN)
ZHAI DONGYU (CN)
YANG LIU (CN)
ZHANG YUANYU (CN)
Application Number:
PCT/CN2022/124119
Publication Date:
August 24, 2023
Filing Date:
October 09, 2022
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C21D1/18; C21C7/064; C21D8/02; C22C38/02; C22C38/04; C22C38/06; C22C38/12; C22C38/14; C22C38/22; C22C38/28; C22C38/32
Foreign References:
| CN107058882A | 2017-08-18 | |||
| US20150184270A1 | 2015-07-02 | |||
| CN107299279A | 2017-10-27 | |||
| CN113046628A | 2021-06-29 | |||
| JP2003034839A | 2003-02-07 | |||
| CN114525379A | 2022-05-24 | |||
| CN114686768A | 2022-07-01 | |||
| CN114672735A | 2022-06-28 | |||
| CN114525450A | 2022-05-24 |
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM ( ORDINARY PARTNERSHIP ) (CN)
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