Title:
BAINITE CAST STEEL FOR SEMI-AUTOGENOUS GRINDING MILL, PREPARATION METHOD THEREFOR, AND BAINITE CAST STEEL LINER OF SEMI-AUTOGENOUS GRINDING MILL
Document Type and Number:
WIPO Patent Application WO/2022/237263
Kind Code:
A1
Abstract:
Bainite cast steel for a semi-autogenous grinding mill, a preparation method therefor, and a bainite cast steel liner of the semi-autogenous grinding mill, which relate to the technical field of wear-resistant steel. The bainite cast steel comprises the following chemical compositions by mass percentage: 0.4-1.0wt％ C, 1.0-2.0wt％ Si, 0.5-1.5wt％ Mn, 1.0-2.0wt％ Cr, 0.2-0.8wt％ Mo, 0.3-0.8wt％ Cu, 0.3-1.5wt％ Ni, 0-0.08wt％ Al, P≤0.03％, S≤0.025％, and the remainder is Fe and unavoidable impurities. The preparation method uses a two-step isothermal quenching process to convert a matrix structure into bainite interphase austenite, so that the prepared bainite steel has the properties of high strength, high toughness and high wear resistance compared to conventional chromium-molybdenum steel, high manganese steel and Hardox plates. Meanwhile, when the prepared bainite cast steel is used for the bainite cast steel liner of the semi-autogenous grinding mill, the service life of the liner can be significantly improved.
Inventors:
BIAN BOQIAN (CN)
PAN QING (CN)
ZHENG HAO (CN)
LU XIANWEN (CN)
LIU ZHIJIE (CN)
PAN QING (CN)
ZHENG HAO (CN)
LU XIANWEN (CN)
LIU ZHIJIE (CN)
Application Number:
PCT/CN2022/076813
Publication Date:
November 17, 2022
Filing Date:
February 18, 2022
Export Citation:
Assignee:
JIANGXI NAIPU MINING MACHINERY CO LTD (CN)
International Classes:
C22C38/02; B02C17/22; B22C9/02; C21D1/20; C21D6/00; C21D9/00; C22C33/06; C22C38/04; C22C38/06; C22C38/42; C22C38/44
Foreign References:
| CN113235005A | 2021-08-10 | |||
| JP2003306741A | 2003-10-31 | |||
| CN105018859A | 2015-11-04 | |||
| CN109913751A | 2019-06-21 | |||
| CN108396237A | 2018-08-14 | |||
| CN112695253A | 2021-04-23 | |||
| GB2208388A | 1989-03-30 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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