KR20180070951A - 무방향성 전기강판 및 그 제조방법 - Google Patents
무방향성 전기강판 및 그 제조방법 Download PDFInfo
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- KR20180070951A KR20180070951A KR1020160173568A KR20160173568A KR20180070951A KR 20180070951 A KR20180070951 A KR 20180070951A KR 1020160173568 A KR1020160173568 A KR 1020160173568A KR 20160173568 A KR20160173568 A KR 20160173568A KR 20180070951 A KR20180070951 A KR 20180070951A
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- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 150000004767 nitrides Chemical class 0.000 claims abstract description 41
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 18
- 150000003568 thioethers Chemical class 0.000 claims abstract description 18
- 229910052718 tin Inorganic materials 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000000137 annealing Methods 0.000 claims description 82
- 230000035699 permeability Effects 0.000 claims description 60
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 23
- 238000005097 cold rolling Methods 0.000 claims description 12
- 238000005098 hot rolling Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 150000001247 metal acetylides Chemical class 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 229910052745 lead Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052711 selenium Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 76
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 43
- 230000005381 magnetic domain Effects 0.000 description 36
- 239000002244 precipitate Substances 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 19
- 239000013078 crystal Substances 0.000 description 16
- 239000010949 copper Substances 0.000 description 13
- 239000011572 manganese Substances 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 13
- 239000010936 titanium Substances 0.000 description 11
- 230000004907 flux Effects 0.000 description 10
- 230000005415 magnetization Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000011575 calcium Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000005389 magnetism Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 6
- 230000005012 migration Effects 0.000 description 6
- 238000013508 migration Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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Abstract
Description
강종(wt%) | Si | Al | Mn | S | N | C | Cu | O | Sn | P |
A1 | 3.02 | 1.02 | 0.031 | 0.002 | 0.0045 | 0.0035 | 0.007 | 0.0002 | 0.05 | 0.05 |
A2 | 3.54 | 0.3 | 0.05 | 0.0012 | 0.003 | 0.0012 | 0.01 | 0.009 | 0.02 | 0.003 |
A3 | 2.52 | 0.0035 | 0.048 | 0.0029 | 0.0023 | 0.002 | 0.0094 | 0.007 | 0.05 | 0.05 |
A4 | 2.51 | 0.0085 | 0.143 | 0.0053 | 0.0021 | 0.0034 | 0.012 | 0.003 | 0.05 | 0.05 |
A5 | 3.08 | 0.0093 | 0.141 | 0.0061 | 0.0006 | 0.0028 | 0.0112 | 0.001 | 0.05 | 0.05 |
A6 | 2.77 | 0.5 | 0.84 | 0.0012 | 0.002 | 0.0015 | 0.021 | 0.0006 | 0.07 | 0.05 |
A7 | 2.65 | 0.4 | 0.3 | 0.0012 | 0.0023 | 0.0053 | 0.0093 | 0.004 | 0.002 | 0.003 |
강종 | 결정립경 (㎛) |
황화물수, 기지부 |
질화물수, 기지부 |
산화물수, 표면부 |
황화물+탄화물+질화물, 표면부 |
비고 |
A1 | 123 | 43 | 263 | 18 | 154 | 비교예 1 |
A2 | 93 | 23 | 131 | 215 | 121 | 비교예 2 |
A3 | 88 | 49 | 31 | 123 | 84 | 발명예 1 |
A4 | 98 | 84 | 47 | 193 | 165 | 발명예 2 |
A5 | 104 | 148 | 16 | 148 | 132 | 발명예 3 |
A6 | 102 | 23 | 26 | 64 | 98 | 비교예 3 |
A7 | 147 | 31 | 126 | 98 | 123 | 비교예 4 |
강종 |
철손 W10/400 (W/kg) |
50Hz, Bm=1.0T, 상대투자율 |
400Hz, Bm=1.0T, 상대투자율 |
1000Hz, Bm=0.3T, 상대투자율 |
50Hz, Bm=1.0T, 압연방향 상대투자율 |
400Hz, Bm=1.0T, 압연방향 상대투자율 |
1000Hz, Bm=0.3T, 압연방향 상대투자율 |
비고 |
A1 | 13.52 | 7003 | 4325 | 2750 | 9865 | 5312 | 3212 | 비교예 1 |
A2 | 11.94 | 7154 | 5243 | 2830 | 10345 | 5632 | 3214 | 비교예 2 |
A3 | 10.26 | 10432 | 6931 | 3541 | 11234 | 7545 | 4023 | 발명예 1 |
A4 | 9.43 | 10542 | 6641 | 3264 | 11542 | 7321 | 4164 | 발명예 2 |
A5 | 9.71 | 11219 | 7636 | 3607 | 12131 | 8345 | 4323 | 발명예 3 |
A6 | 11.75 | 7850 | 6943 | 2950 | 10453 | 7325 | 3843 | 비교예 3 |
A7 | 12.59 | 7520 | 5431 | 2834 | 9540 | 6843 | 3125 | 비교예 4 |
강종 (wt%) |
Si | Al | Mn | S | N | C | Cu | O | Sn | P |
B | 3 | 0.005 | 0.1 | 0.005 | 0.0027 | 0.0022 | 0.007 | 0.0005 | 0.04 | 0.07 |
C | 3.3 | 0.007 | 0.3 | 0.003 | 0.0017 | 0.0014 | 0.004 | 0.0009 | 0.07 | 0.03 |
D | 2.9 | 0.87 | 0.23 | 0.0043 | 0.0027 | 0.0024 | 0.011 | 0.0017 | 0.09 | 0.04 |
강종 | 결정립경 (㎛) |
황화물수, 기지부 |
질화물수, 기지부 |
산화물수, 표면부 |
황화물+탄화물+질화물 수, 표면부 |
비고 |
B | 31 | 11 | 21 | 27 | 14 | 비교예 5 |
B | 47 | 13 | 18 | 21 | 25 | 비교예 6 |
B | 64 | 116 | 12 | 35 | 21 | 발명예 4 |
B | 94 | 21 | 15 | 41 | 31 | 발명예 5 |
B | 146 | 20 | 16 | 26 | 17 | 발명예 6 |
B | 206 | 16 | 21 | 34 | 18 | 비교예 7 |
B | 247 | 13 | 24 | 46 | 29 | 비교예 8 |
C | 32 | 5 | 20 | 41 | 21 | 비교예 9 |
C | 49 | 16 | 17 | 35 | 25 | 비교예 10 |
C | 61 | 107 | 8 | 113 | 46 | 발명예 7 |
C | 95 | 38 | 22 | 64 | 31 | 발명예 8 |
C | 143 | 18 | 14 | 36 | 8 | 발명예 9 |
C | 202 | 13 | 29 | 19 | 21 | 비교예 11 |
C | 225 | 11 | 19 | 56 | 19 | 비교예 12 |
D | 23 | 5 | 53 | 119 | 76 | 비교예 13 |
D | 3 | 33 | 94 | 196 | 96 | 비교예 14 |
D | 51 | 139 | 5 | 554 | 3 | 발명예 10 |
D | 75 | 97 | 40 | 115 | 11 | 발명예 11 |
D | 83 | 31 | 2 | 153 | 4 | 발명예 12 |
D | 213 | 37 | 39 | 79 | 6 | 비교예 15 |
D | 203 | 42 | 88 | 97 | 60 | 비교예 16 |
강종 |
최종 소둔시간 (min) |
철손 W10/400 (W/Kg) |
50Hz, Bm=1.0T, 상대투자율 |
400Hz, Bm=1.0T, 상대투자율 |
1000Hz, Bm=0.3T, 상대투자율 |
50Hz, Bm=1.0T, 압연방향 상대투자율 |
400Hz, Bm=1.0T, 압연방향 상대투자율 |
1000Hz, Bm=0.3T, 압연방향 상대투자율 |
비고 |
B | 0.1 | 14.2 | 8231 | 4356 | 2736 | 9876 | 4866 | 2955 | 비교예 5 |
B | 0.5 | 12.01 | 9123 | 5412 | 2934 | 10901 | 6159 | 3217 | 비교예 6 |
B | 1.3 | 10.11 | 11245 | 7081 | 3569 | 13476 | 7982 | 3897 | 발명예 4 |
B | 2 | 10.09 | 13210 | 8023 | 3705 | 15842 | 9120 | 4017 | 발명예 5 |
B | 3.5 | 10.32 | 12312 | 7452 | 3591 | 14691 | 8407 | 3886 | 발명예 6 |
B | 5 | 12.21 | 8741 | 4566 | 2813 | 10404 | 5127 | 3080 | 비교예 7 |
B | 10 | 12.35 | 8454 | 4521 | 2801 | 10099 | 5125 | 3038 | 비교예 8 |
C | 0.1 | 14.83 | 7231 | 4123 | 2700 | 8589 | 4646 | 2879 | 비교예 9 |
C | 0.5 | 12.35 | 8341 | 5207 | 2834 | 9909 | 5904 | 3055 | 비교예 10 |
C | 1.3 | 10.37 | 11197 | 6991 | 3560 | 13425 | 7915 | 3853 | 발명예 7 |
C | 2 | 10.33 | 12843 | 7890 | 3704 | 15322 | 8985 | 4000 | 발명예 8 |
C | 3.5 | 10.63 | 12105 | 7212 | 3590 | 14500 | 8193 | 3915 | 발명예 9 |
C | 5 | 12.54 | 8322 | 4312 | 2811 | 9898 | 4857 | 3030 | 비교예 11 |
C | 10 | 12.83 | 8043 | 4299 | 2785 | 9574 | 4837 | 2999 | 비교예 12 |
D | 0.1 | 13.92 | 6973 | 4323 | 2723 | 9766 | 5289 | 3148 | 비교예 13 |
D | 0.5 | 13.39 | 7119 | 5215 | 2735 | 10306 | 5628 | 3147 | 비교예 14 |
D | 1.3 | 10.91 | 10379 | 6858 | 3520 | 11157 | 7510 | 3964 | 발명예 10 |
D | 2 | 10.68 | 10540 | 6569 | 3205 | 11463 | 7302 | 4115 | 발명예 11 |
D | 3.5 | 9.93 | 11139 | 7564 | 3549 | 12119 | 8281 | 4235 | 발명예 12 |
D | 5 | 12.90 | 7840 | 6893 | 2870 | 10422 | 7258 | 3831 | 비교예 15 |
D | 10 | 14.34 | 7512 | 5356 | 2741 | 9523 | 6784 | 3041 | 비교예 16 |
강종(wt%) | Si | Al | Mn | S | N | C | Cu | O | Sn | P | 기타 |
E | 2.5 | 0.0031 | 0.052 | 0.0051 | 0.0021 | 0.0013 | 0.0052 | 0.0003 | 0.043 | 0.051 | Ca:0.0005 Ni:0.021 Cr:0.015 Ti:0.0007 |
열연판 소둔온도 (℃) |
열연판소둔시간 (분) |
최종 소둔온도 (℃) |
최종 소둔시간 (분) |
식 2 만족 여부 | 비고 |
920 | 0.5 | 1000 | 2 | x | 비교예 17 |
920 | 2 | 1000 | 2 | x | 비교예 18 |
920 | 25 | 1000 | 2 | o | 비교예 19 |
960 | 0.1 | 1000 | 2 | x | 비교예 20 |
960 | 0.5 | 1000 | 2 | x | 비교예 21 |
960 | 3.5 | 1000 | 2 | o | 발명예 13 |
960 | 5.5 | 1000 | 2 | o | 발명예 14 |
960 | 25 | 1000 | 2 | o | 발명예 15 |
1000 | 1.1 | 1000 | 2 | x | 비교예 22 |
1000 | 2.5 | 1000 | 2 | o | 발명예 16 |
1000 | 3.5 | 1000 | 2 | o | 발명예 17 |
1000 | 5.5 | 1000 | 2 | o | 발명예 18 |
1050 | 0.5 | 1000 | 2 | x | 비교예 23 |
1050 | 1.1 | 1000 | 2 | x | 비교예 24 |
1050 | 2 | 1000 | 2 | o | 발명예 19 |
1100 | 1.1 | 1000 | 2 | x | 비교예 25 |
1140 | 1.1 | 1000 | 2 | x | 비교예 26 |
1170 | 1.1 | 1000 | 2 | x | 비교예 27 |
1000 | 2.5 | 920 | 2.5 | o | 발명예 20 |
1000 | 2.5 | 960 | 2.5 | o | 발명예 21 |
1020 | 2.5 | 1000 | 2.5 | o | 발명예 22 |
1020 | 2.5 | 1050 | 2.5 | x | 비교예 28 |
1020 | 2.5 | 1140 | 2.5 | x | 비교예 29 |
1020 | 2.5 | 1170 | 2.5 | x | 비교예 30 |
결정립경 (㎛) |
황화물수, 기지부 |
질화물수, 기지부 |
산화물수, 표면부 |
황화물+탄화물+질화물 수, 표면부 |
비고 |
66.1 | 312 | 327 | 143 | 312 | 비교예 17 |
70.9 | 213 | 217 | 126 | 59 | 비교예 18 |
140.9 | 32 | 53 | 154 | 59 | 비교예 19 |
65.9 | 208 | 215 | 154 | 95 | 비교예 20 |
67.2 | 174 | 205 | 115 | 375 | 비교예 21 |
77.0 | 76 | 43 | 156 | 124 | 발명예 13 |
83.9 | 64 | 51 | 182 | 116 | 발명예 14 |
146.1 | 43 | 23 | 174 | 72 | 발명예 15 |
69.8 | 98 | 106 | 130 | 55 | 비교예 22 |
73.2 | 135 | 97 | 169 | 143 | 발명예 16 |
78.0 | 165 | 121 | 147 | 120 | 발명예 17 |
83.3 | 182 | 143 | 157 | 117 | 발명예 18 |
67.0 | 228 | 252 | 108 | 231 | 비교예 23 |
68.6 | 132 | 146 | 102 | 125 | 비교예 24 |
71.6 | 98 | 85 | 176 | 142 | 발명예 19 |
70.3 | 42 | 57 | 126 | 47 | 비교예 25 |
68.9 | 267 | 295 | 123 | 505 | 비교예 26 |
70.3 | 412 | 417 | 113 | 135 | 비교예 27 |
84.7 | 163 | 131 | 45 | 108 | 발명예 20 |
86.9 | 154 | 105 | 54 | 123 | 발명예 21 |
91.4 | 186 | 106 | 193 | 105 | 발명예 22 |
94.9 | 103 | 119 | 239 | 111 | 비교예 28 |
101.0 | 121 | 145 | 365 | 431 | 비교예 29 |
105.4 | 107 | 132 | 351 | 561 | 비교예 30 |
50Hz, Bm=1.0T, 상대투자율 |
400Hz, Bm=1.0T, 상대투자율 |
1000Hz, Bm=0.3T, 상대투자율 |
50Hz, Bm=1.0T, 압연방향 상대투자율 |
400Hz, Bm=1.0T, 압연방향 상대투자율 |
1000Hz, Bm=0.3T, 압연방향 상대투자율 |
비고 |
4143 | 2845 | 1359 | 4722 | 3300 | 1611 | 비교예 17 |
6531 | 4508 | 2176 | 7449 | 5136 | 2470 | 비교예 18 |
9327 | 6485 | 3230 | 10697 | 7405 | 3661 | 비교예 19 |
3986 | 2739 | 1292 | 4555 | 3176 | 1540 | 비교예 20 |
4474 | 3114 | 1482 | 5115 | 3550 | 1774 | 비교예 21 |
10132 | 7068 | 3483 | 11588 | 8080 | 3997 | 발명예 13 |
12639 | 8810 | 4327 | 14524 | 10163 | 5014 | 발명예 14 |
13151 | 9134 | 4509 | 15119 | 10517 | 5256 | 발명예 15 |
9140 | 6308 | 3111 | 10463 | 7228 | 3563 | 비교예 22 |
10727 | 7420 | 3637 | 12297 | 8524 | 4217 | 발명예 16 |
14286 | 9990 | 4913 | 16389 | 11421 | 5709 | 발명예 17 |
15167 | 10589 | 5263 | 17376 | 12155 | 6055 | 발명예 18 |
9118 | 6366 | 3146 | 10400 | 7240 | 3591 | 비교예 23 |
9723 | 6799 | 3345 | 11163 | 7773 | 3798 | 비교예 24 |
12765 | 8923 | 4460 | 14597 | 10147 | 5059 | 발명예 19 |
9182 | 6364 | 3171 | 10486 | 7276 | 3600 | 비교예 25 |
9542 | 6673 | 3304 | 10895 | 7607 | 3746 | 비교예 26 |
9334 | 6479 | 3193 | 10695 | 7416 | 3646 | 비교예 27 |
10231 | 7104 | 3533 | 11701 | 8136 | 4038 | 발명예 20 |
10872 | 7603 | 3730 | 12495 | 8662 | 4287 | 발명예 21 |
10312 | 7153 | 3546 | 11772 | 8160 | 4052 | 발명예 22 |
9431 | 6523 | 3195 | 10811 | 7529 | 3726 | 비교예 28 |
9213 | 6350 | 3102 | 10585 | 7396 | 3673 | 비교예 29 |
9120 | 6318 | 3069 | 10439 | 7288 | 3631 | 비교예 30 |
20 : 기지부
Claims (16)
- 중량 %로 Si: 2.0% 내지 4.0%, Al: 0.001% 내지 2.0%, S: 0.0005% 내지 0.009%, Mn: 0.02% 내지 1.0%, N: 0.0005% 내지 0.004%, C: 0.004% 이하(0%를 포함하지 않는다), Cu: 0.005% 내지 0.07%, O: 0.0001% 내지 0.007%, Sn 또는 P를 각각 단독 또는 이들의 합량으로 0.05% 내지 0.2% 및 잔부는 Fe 및 불순물을 포함하는 무방향성 전기강판에 있어서,
상기 무방향성 전기강판은 두께 방향으로 강판의 표면으로부터 2㎛까지의 표면부 및 표면으로부터 2㎛를 초과하는 기지부로 구성되고,
상기 기지부 내의 동일 면적에서 10nm 내지 100nm 직경의 황화물의 개수가 10nm 내지 100nm 직경의 질화물의 개수보다 많은 무방향성 전기강판. - 제1항에 있어서,
상기 기지부 내에서, 10nm 내지 100nm 직경의 황화물 및 10nm 내지 100nm 직경의 질화물의 합의 개수가 250㎛2 면적당 1 내지 200인 무방향성 전기강판. - 제1항에 있어서,
상기 표면부의 동일 면적에서 10nm 내지 100nm 직경의 산화물의 개수가 10nm 내지 100nm 직경의 탄화물, 질화물 및 황화물의 개수의 합보다 많은 무방향성 전기강판. - 제1항에 있어서,
상기 표면부에서 10nm 내지 100nm 직경의 산화물의 개수는 250㎛2 면적당 1 내지 200인 무방향성 전기강판. - 제1항에 있어서,
하기 식 1을 만족하는 무방향성 전기강판.
[식 1]
[Sn]+[P] > [Al]
(단, [Sn], [P] 및 [Al]는 각각 Sn, P 및 Al의 함량(중량%)를 나타낸다.) - 제1항에 있어서,
Ti:0.0005 내지 0.003 중량%, Ca 0.0001% 내지 0.003%, 및 Ni 또는 Cr을 각각 단독 또는 이들의 합량으로 0.005 중량% 내지 0.2 중량% 더 포함하는 무방향성 전기강판. - 제1항에 있어서,
Sb를 0.005 중량% 내지 0.15 중량% 더 포함하는 무방향성 전기강판. - 제1항에 있어서,
Mo를 0.001 중량% 내지 0.015 중량% 더 포함하는 무방향성 전기강판. - 제1항에 있어서,
Bi, Pb, Mg, As, Nb, Se 및 V 중 1종 이상을 각각 단독 또는 합량으로 0.0005 중량% 내지 0.003 중량% 더 포함하는 무방향성 전기강판. - 제1항에 있어서,
평균 결정립경이 50 내지 200㎛인 무방향성 전기강판. - 제1항에 있어서,
50 Hz의 Bm= 1.0T 조건에서의 상대투자율은 8000을 초과하고,
400 Hz의 Bm= 1.0T 조건에서의 상대투자율은 4000을 초과하고,
1000 Hz의 Bm=0.3T 조건에서의 상대투자율은 2000을 초과하는 무방향성 전기강판. - 중량 %로 Si: 2.0% 내지 4.0%, Al: 0.001% 내지 2.0%, S: 0.0005% 내지 0.009%, Mn: 0.02% 내지 1.0%, N: 0.0005% 내지 0.004%, C: 0.004% 이하(0%를 포함하지 않는다), Cu: 0.005% 내지 0.07%, O: 0.0001% 내지 0.007%, Sn 또는 P를 각각 단독 또는 이들의 합량으로 0.05% 내지 0.2% 및 잔부는 Fe 및 불순물을 포함하는 슬라브를 가열하는 단계;
슬라브를 열간 압연하여 열연판을 제조하는 단계;
상기 열연판을 열연판 소둔하는 단계;
소둔된 열연판을 냉간 압연하여 냉연판을 제조하는 단계; 및
상기 냉연판을 최종 소둔하는 단계;
를 포함하고,
상기 열연판 소둔하는 단계 및 상기 최종 소둔하는 단계는 하기 식 2를 만족하고,
최종 소둔된 무방향성 전기강판은 두께 방향으로 강판의 표면으로부터 2㎛까지의 표면부 및 표면으로부터 2㎛를 초과하는 기지부로 구성되고,
상기 기지부 내의 동일 면적에서 10nm 내지 100nm 직경의 황화물의 개수가 10nm 내지 100nm 직경의 질화물의 개수보다 많은 무방향성 전기강판의 제조방법.
[식 2]
[열연판 소둔 온도]×[열연판 소둔 시간] > [최종 소둔 온도]×[최종 소둔 시간]
(단, [열연판 소둔 온도] 및 [최종 소둔 온도]는 각각 열연판 소둔하는 단계 및 최종 소둔하는 단계에서의 온도(℃)를 나타내고, [열연판 소둔 시간] 및 [최종 소둔 시간]은 각각 열연판 소둔하는 단계 및 최종 소둔하는 단계에서의 시간(분)을 나타낸다.) - 제12항에 있어서,
상기 슬라브를 가열하는 단계에서 슬라브를 1100℃ 내지 1200℃로 가열하는 무방향성 전기강판의 제조방법. - 제12항에 있어서,
상기 열연판 소둔하는 단계에서, 950℃ 내지 1150℃의 온도에서 1분 내지 30분 동안 소둔하는 무방향성 전기강판의 제조방법. - 제12항에 있어서,
상기 최종 소둔하는 단계에서, 900℃ 내지 1150℃의 온도에서 1분 내지 5분 동안 소둔하는 무방향성 전기강판의 제조방법. - 제12항에 있어서,
냉연판을 제조하는 단계는 1회의 냉간 압연하는 단계를 포함하거나 또는 중간소둔을 사이에 둔 2회 이상의 냉간 압연하는 단계를 포함하는 무방향성 전기강판의 제조방법.
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CN114134422A (zh) * | 2021-12-02 | 2022-03-04 | 武汉英杰寰宇贸易有限公司 | 具有优良抗层状撕裂性能软磁钢及制备方法 |
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- 2017-12-19 JP JP2019532678A patent/JP6847226B2/ja active Active
- 2017-12-19 CN CN201780077554.3A patent/CN110073021B/zh active Active
- 2017-12-19 WO PCT/KR2017/015027 patent/WO2018117602A1/ko active Application Filing
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KR20200035761A (ko) * | 2018-09-27 | 2020-04-06 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
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WO2021167065A1 (ja) * | 2020-02-20 | 2021-08-26 | 日本製鉄株式会社 | 無方向性電磁鋼板用の熱延鋼板、無方向性電磁鋼板、およびその製造方法 |
JPWO2021167065A1 (ko) * | 2020-02-20 | 2021-08-26 | ||
CN115135788A (zh) * | 2020-02-20 | 2022-09-30 | 日本制铁株式会社 | 无取向性电磁钢板用热轧钢板、无取向性电磁钢板及其制造方法 |
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KR20220089734A (ko) * | 2020-12-21 | 2022-06-29 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
WO2022139337A1 (ko) * | 2020-12-21 | 2022-06-30 | 주식회사 포스코 | 무방향성 전기강판 및 그 제조방법 |
CN114134422A (zh) * | 2021-12-02 | 2022-03-04 | 武汉英杰寰宇贸易有限公司 | 具有优良抗层状撕裂性能软磁钢及制备方法 |
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CN110073021A (zh) | 2019-07-30 |
KR101918720B1 (ko) | 2018-11-14 |
EP3556884A1 (en) | 2019-10-23 |
CN110073021B (zh) | 2021-08-06 |
JP6847226B2 (ja) | 2021-03-24 |
US20200087748A1 (en) | 2020-03-19 |
EP3556884A4 (en) | 2019-10-23 |
WO2018117602A1 (ko) | 2018-06-28 |
JP2020509182A (ja) | 2020-03-26 |
US11060162B2 (en) | 2021-07-13 |
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