Title:
METHOD FOR CONTROLLING SURFACE QUALITY OF NICKEL-BASED STEEL PLATE
Document Type and Number:
WIPO Patent Application WO/2023/155511
Kind Code:
A1
Abstract:
A method for controlling the surface quality of a nickel-based steel plate, comprising the following chemical components and the percentages by mass: C: 0.03%-0.07%; Si: 0.10%-0.30%; Mn: 0.60%-0.90%; P: ≤0.005%; S: ≤0.002%; Nb: ≤0.020%; V: ≤0.010%; Ti: ≤0.030%; Cr: ≤0.30%; Mo: ≤0.30%; Ni: 0.50%-9.50%; Cu: ≤0.05%; Al: 0.020%-0.050%; N: ≤0.0045%; H: ≤0.0002%; and the balance being Fe and inevitable impurities. By optimization of a smelting process, the surface treatment of a casting blank and the refining of a heating furnace process, the surface quality of a steel plate is improved.
Inventors:
QIAO MINGLIANG (CN)
WU JUNPING (CN)
ZHAI DONGYU (CN)
WU JUNPING (CN)
ZHAI DONGYU (CN)
Application Number:
PCT/CN2022/132286
Publication Date:
August 24, 2023
Filing Date:
November 16, 2022
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C21D8/02; B05D7/14; B23P15/00; C21C7/10; C22C38/02; C22C38/04; C22C38/06; C22C38/08; C22C38/12; C22C38/14; C22C38/18; C22C38/42; C22C38/44; C22C38/46; C22C38/48; C22C38/50
Foreign References:
| CN114525389A | 2022-05-24 | |||
| CN111440990A | 2020-07-24 | |||
| CN109694987A | 2019-04-30 | |||
| CN107921509A | 2018-04-17 | |||
| CN105331890A | 2016-02-17 | |||
| CN110129676A | 2019-08-16 | |||
| CN103602888A | 2014-02-26 | |||
| CN105441798A | 2016-03-30 |
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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