JPWO2022255258A5 - - Google Patents
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- JPWO2022255258A5 JPWO2022255258A5 JP2022551749A JP2022551749A JPWO2022255258A5 JP WO2022255258 A5 JPWO2022255258 A5 JP WO2022255258A5 JP 2022551749 A JP2022551749 A JP 2022551749A JP 2022551749 A JP2022551749 A JP 2022551749A JP WO2022255258 A5 JPWO2022255258 A5 JP WO2022255258A5
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- mass
- annealing
- hot
- rolling
- temperature range
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- 238000000137 annealing Methods 0.000 claims 17
- 238000005096 rolling process Methods 0.000 claims 6
- 238000005097 cold rolling Methods 0.000 claims 4
- 238000000034 method Methods 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 claims 3
- 238000005098 hot rolling Methods 0.000 claims 3
- 239000010959 steel Substances 0.000 claims 3
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 2
- 238000005261 decarburization Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000001953 recrystallisation Methods 0.000 claims 2
- 229910052787 antimony Inorganic materials 0.000 claims 1
- 229910052797 bismuth Inorganic materials 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 229910052733 gallium Inorganic materials 0.000 claims 1
- 229910052732 germanium Inorganic materials 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 229910052745 lead Inorganic materials 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 229910052718 tin Inorganic materials 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
Claims (3)
任意選択的に、さらに、下記のA群からC群のうちの1群以上の成分を含有し、
A群;
Ni:0~1.00mass%、Sb:0~0.50mass%、Sn:0~0.50m
ass%、Cu:0~0.50mass%、Cr:0~0.50mass%、P:0~0.50mass%、Mo:0~0.50mass%、Nb:0~0.020mass%、V:0~0.010mass%、B:0~0.0025mass%、Bi:0~0.50mass%およびZr:0~0.10mass%のうちから選ばれる少なくとも1種、
B群;
Co:0~0.0500mass%、Pb:0~0.0100mass%のうちから選ば
れる少なくとも1種、
C群;
As:0~0.0200mass%、Zn:0~0.0200mass%、W:0~0.
0100mass%、Ge:0~0.0050mass%、Ga:0~0.0050mass%のうちから選ばれる少なくとも1種、
残部がFeおよび不可避的不純物からなる成分組成を有する鋼スラブを加熱した後、熱間圧延し、次いで、熱延板焼鈍を施した後もしくは施すことなく、1回もしくは中間焼鈍を挟む2回以上の冷間圧延して最終板厚の冷延板とし、脱炭焼鈍を兼ねた一次再結晶焼鈍し、焼鈍分離剤を塗布し、仕上焼鈍を施す方向性電磁鋼板の製造方法において、
上記スラブの加熱温度は1300℃以上とし、上記熱間圧延の粗圧延では、いずれかの圧延パスを1200℃以上の温度域で行った後、5s以上時間を空けて逆方向に次の圧延パスを行い、かつ、粗圧延の総圧下率を75%以上とすることを特徴とする方向性電磁鋼板の製造方法。 C: 0.02 to 0.10 mass%, Si: 2.5 to 5.5 mass%, Mn: 0.01 to 0.30 mass% and at least one of S and Se in total 0.001 to 0 Contains .040 mass%,
optionally, further comprising one or more of the following Groups A to C ingredients:
Group A;
Ni: 0 to 1.00 mass%, Sb: 0 to 0.50 mass%, Sn: 0 to 0.50m
ass%, Cu: 0 to 0.50 mass%, Cr: 0 to 0.50 mass%, P: 0 to 0.50 mass%, Mo: 0 to 0.50 mass%, Nb: 0 to 0.020 mass%, V: At least one selected from 0 to 0.010 mass%, B: 0 to 0.0025 mass%, Bi: 0 to 0.50 mass% and Zr: 0 to 0.10 mass%,
Group B;
Co: 0 to 0.0500 mass%, Pb: selected from 0 to 0.0100 mass%
at least one
Group C;
As: 0-0.0200 mass%, Zn: 0-0.0200 mass%, W: 0-0.
0100 mass%, Ge: 0 to 0.0050 mass%, Ga: at least one selected from 0 to 0.0050 mass%,
After heating a steel slab having a chemical composition in which the balance is Fe and unavoidable impurities, it is hot-rolled, and then hot-rolled sheet annealing is performed once or twice or more with intermediate annealing in between after or without hot-rolled sheet annealing. is cold-rolled to obtain a cold-rolled sheet having a final thickness, primary recrystallization annealing is performed in combination with decarburization annealing, an annealing separator is applied, and finish annealing is performed.
The heating temperature of the slab is 1300 ° C. or higher, and in the rough rolling of the hot rolling, after performing any rolling pass in a temperature range of 1200 ° C. or higher, the next rolling pass is performed in the opposite direction after an interval of 5 seconds or more. and making the total rolling reduction of rough rolling 75% or more.
記
・鋼スラブを加熱し、1100~1400℃の温度域で1パス以上の粗圧延をした後、800~1300℃の温度域で2パス以上の仕上圧延をして熱延板とし、その後、400~750℃の巻取温度でコイルに巻き取る熱間圧延工程
・熱延板焼鈍を行う場合は、800~1250℃の温度域で5s以上保持した後、800℃から350℃まで5~100℃/sで冷却する熱延板焼鈍工程
・冷間圧延を1回行う場合は、その総圧下率を50~92%の範囲とし、冷間圧延を2回以上行う場合は、最終板厚に仕上げる最終冷間圧延の総圧下率を50~92%の範囲とする冷間圧延工程
・中間焼鈍を行う場合は、800~1250℃の温度域で5s以上保持した後、800℃から350℃まで5~100℃/sで冷却する中間焼鈍工程
・H2とN2とを含み、かつ露点が20~80℃以下の湿潤雰囲気下で、750~950℃の温度域で10s以上保持する脱炭焼鈍を兼ねた一次再結晶焼鈍工程
・MgOを主成分とする焼鈍分離剤を鋼板表面に片面当たり3g/m2以上塗布する焼鈍分離剤塗布工程
・少なくとも1050~1300℃の温度に3hr以上保持する純化処理を含む、800℃以上の温度域の一部の雰囲気をH2含有雰囲気とする仕上焼鈍工程 3. The method for producing a grain-oriented electrical steel sheet according to claim 1, wherein the step satisfies the following conditions.
The steel slab is heated and rough-rolled in a temperature range of 1100 to 1400°C for one pass or more, and then finish-rolled in a temperature range of 800 to 1300°C for two passes or more to obtain a hot-rolled sheet. Hot rolling process of winding into a coil at a coiling temperature of 400 to 750 ° C. When hot-rolled sheet annealing is performed, after holding for 5 seconds or more in the temperature range of 800 to 1250 ° C., 5 to 100 degrees from 800 ° C. to 350 ° C. Hot-rolled sheet annealing process cooling at ℃ / s ・When cold rolling is performed once, the total reduction rate is in the range of 50 to 92%, and when cold rolling is performed twice or more, the final sheet thickness Cold rolling process with a total rolling reduction of the final cold rolling to be finished in the range of 50 to 92% When intermediate annealing is performed, after holding for 5 seconds or more in the temperature range of 800 to 1250 ° C., from 800 ° C. to 350 ° C. Intermediate annealing step cooling at 5 to 100 ° C./s Decarburization held for 10 seconds or more in a temperature range of 750 to 950 ° C. in a moist atmosphere containing H 2 and N 2 and having a dew point of 20 to 80 ° C. or less A primary recrystallization annealing process that also serves as annealing Annealing separator coating process in which 3 g/m 2 or more of an annealing separator containing MgO as a main component is applied to the surface of the steel sheet. A final annealing process, including purification treatment, in which a part of the atmosphere in the temperature range of 800°C or higher is made into an atmosphere containing H2
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021090806 | 2021-05-31 | ||
JP2021090806 | 2021-05-31 | ||
PCT/JP2022/021772 WO2022255258A1 (en) | 2021-05-31 | 2022-05-27 | Method for producing grain-oriented electromagnetic steel sheet |
Publications (3)
Publication Number | Publication Date |
---|---|
JPWO2022255258A1 JPWO2022255258A1 (en) | 2022-12-08 |
JPWO2022255258A5 true JPWO2022255258A5 (en) | 2023-05-15 |
JP7439943B2 JP7439943B2 (en) | 2024-02-28 |
Family
ID=84324160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2022551749A Active JP7439943B2 (en) | 2021-05-31 | 2022-05-27 | Manufacturing method of grain-oriented electrical steel sheet |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP7439943B2 (en) |
WO (1) | WO2022255258A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4204891A (en) * | 1978-11-27 | 1980-05-27 | Nippon Steel Corporation | Method for preventing the edge crack in a grain oriented silicon steel sheet produced from a continuously cast steel slab |
JPH0310020A (en) * | 1989-05-08 | 1991-01-17 | Kawasaki Steel Corp | Production of grain-oriented silicon steel sheet excellent in magnetic property and surface characteristic |
JPH0892644A (en) * | 1994-09-29 | 1996-04-09 | Kawasaki Steel Corp | Production of grain-oriented silicon steel sheet excellent in magnetic property |
JP3849146B2 (en) * | 1994-12-05 | 2006-11-22 | Jfeスチール株式会社 | Method for producing unidirectional silicon steel sheet |
JP4568875B2 (en) * | 2004-03-16 | 2010-10-27 | Jfeスチール株式会社 | Method for producing grain-oriented electrical steel sheets with excellent magnetic properties |
RU2697115C1 (en) * | 2016-03-09 | 2019-08-12 | ДжФЕ СТИЛ КОРПОРЕЙШН | Method for production of textured steel sheet from electrical steel |
JP6465054B2 (en) * | 2016-03-15 | 2019-02-06 | Jfeスチール株式会社 | Production method and production equipment row of grain-oriented electrical steel sheets |
JP6788237B2 (en) * | 2018-09-27 | 2020-11-25 | Jfeスチール株式会社 | Electrical steel sheet and its manufacturing method |
-
2022
- 2022-05-27 WO PCT/JP2022/021772 patent/WO2022255258A1/en active Application Filing
- 2022-05-27 JP JP2022551749A patent/JP7439943B2/en active Active
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