Title:
WEAR-RESISTANT STEEL AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/151301
Kind Code:
A1
Abstract:
The present invention relates to the technical field of steel production. Disclosed are a wear-resistant steel and a production method therefor. The wear-resistant steel comprises the following chemical components in percentage by mass: C: 0.10％-0.45％; Si: 0.20％-0.55％; Mn: 0.50％-1.50％; P≤0.015％; S≤0.003％; Nb≤0.060％; V≤0.030％; Ti: 0.008％-0.025％; Cr: 0.20％-1.00％; Ni≤1.80％; Mo≤0.50％; Al: 0.025％-0.055％; B: 0.0010％-0.0030％; Mg: 0.0010％-0.0018％; N≤0.0045％; and the balance of Fe and inevitable impurities. On the premise that a high-strength martensite structure of a wear-resistant steel plate is ensured, micro-alloying elements is quantified, thereby reducing the quantity and the size of carbonitrides; and the cooling speed and austenite temperature of a casting blank are regulated and controlled, and a secondary quenching optimization process is used, thereby refining structure grains, eliminating the structure stress, and avoiding the occurrence of delayed cracks in the wear-resistant steel during a cutting and grinding process of the casting blank and the steel plate.
Inventors:
QIAO MINGLIANG (CN)
WU JUNPING (CN)
WU JUNPING (CN)
Application Number:
PCT/CN2022/125395
Publication Date:
August 17, 2023
Filing Date:
October 14, 2022
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; C21C7/00; C21C7/10; C21D1/18; C21D8/02; C22C38/04; C22C38/06; C22C38/22; C22C38/24; C22C38/26; C22C38/28; C22C38/32; C22C38/44; C22C38/46; C22C38/48; C22C38/50; C22C38/54
Foreign References:
| CN114525450A | 2022-05-24 | |||
| CN107058882A | 2017-08-18 | |||
| JP2017193740A | 2017-10-26 | |||
| CN108754317A | 2018-11-06 |
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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