KR101903008B1 - 무방향성 전기강판 및 그 제조방법 - Google Patents
무방향성 전기강판 및 그 제조방법 Download PDFInfo
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- KR101903008B1 KR101903008B1 KR1020160174362A KR20160174362A KR101903008B1 KR 101903008 B1 KR101903008 B1 KR 101903008B1 KR 1020160174362 A KR1020160174362 A KR 1020160174362A KR 20160174362 A KR20160174362 A KR 20160174362A KR 101903008 B1 KR101903008 B1 KR 101903008B1
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- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title description 13
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 68
- 238000000137 annealing Methods 0.000 claims description 43
- 229910052742 iron Inorganic materials 0.000 claims description 31
- 230000004907 flux Effects 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005097 cold rolling Methods 0.000 claims description 12
- 229910052787 antimony Inorganic materials 0.000 claims description 11
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 238000005098 hot rolling Methods 0.000 claims description 11
- 229910052718 tin Inorganic materials 0.000 claims description 11
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 7
- 239000010936 titanium Substances 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 12
- 230000005389 magnetism Effects 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000011572 manganese Substances 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000011162 core material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 150000003568 thioethers Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-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
- 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
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 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
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
Description
강종 (중량%) |
Si | Mn | Al | Zn | B |
A1 | 1.64 | 0.21 | 0.19 | 0.003 | 0.0037 |
A2 | 1.98 | 0.59 | 0.15 | 0.0005 | 0.0009 |
A3 | 2.23 | 0.29 | 0.75 | 0.0049 | 0.0029 |
A4 | 3.16 | 0.75 | 0.5 | 0.0028 | 0.0033 |
A5 | 1.32 | 0.34 | 0.52 | 0.0035 | 0.0002 |
A6 | 2.22 | 0.41 | 0.37 | 0.011 | 0.0019 |
A7 | 2.71 | 0.44 | 0.34 | 0.0025 | 0.0013 |
A8 | 2.87 | 0.63 | 0.81 | 0.0014 | 0.0017 |
A9 | 3.14 | 0.56 | 0.34 | 0.0008 | 0.0004 |
A10 | 2.89 | 0.32 | 0.66 | 0.0014 | 0.0018 |
A11 | 3.33 | 0.16 | 0.33 | 0.0025 | 0.0014 |
A12 | 2.53 | 0.18 | 0.44 | 0.0015 | 0.0062 |
강종 (중량%) |
P | C | S | N | Ti | Sn | Sb |
A1 | 0.04 | 0.001 | 0.0016 | 0.0037 | 0.0013 | 0.02 | 0.03 |
A2 | 0.03 | 0.0029 | 0.0016 | 0.0036 | 0.0019 | 0.02 | 0 |
A3 | 0.02 | 0.0024 | 0.0019 | 0.0013 | 0.0024 | 0 | 0.02 |
A4 | 0.02 | 0.0016 | 0.002 | 0.0015 | 0.0015 | 0.04 | 0 |
A5 | 0.04 | 0.0012 | 0.0026 | 0.0019 | 0.0007 | 0 | 0 |
A6 | 0.05 | 0.001 | 0.0017 | 0.0018 | 0.0027 | 0 | 0.03 |
A7 | 0.01 | 0.0034 | 0.0032 | 0.0026 | 0.0023 | 0.03 | 0.01 |
A8 | 0.01 | 0.0027 | 0.003 | 0.002 | 0.0021 | 0.05 | 0 |
A9 | 0.07 | 0.0007 | 0.0025 | 0.0035 | 0.0011 | 0 | 0.01 |
A10 | 0.03 | 0.0012 | 0.0035 | 0.0036 | 0.0021 | 0 | 0 |
A11 | 0.05 | 0.0026 | 0.0028 | 0.0035 | 0.0033 | 0.01 | 0.01 |
A12 | 0.02 | 0.0031 | 0.0015 | 0.0039 | 0.0012 | 0.03 | 0.02 |
강종 | 소둔 분위기중 H2 비율(부피%) | ([Zn]+[B])×100/[H2] | Si 산화물 밀도(개/㎛2) | 철손 (W15/50, W/kg) | 자속밀도 (B50, T) | 비고 |
A1 | 39 | 0.017 | 4 | 2.72 | 1.75 | 발명예 |
A2 | 30 | 0.005 | 10 | 3.75 | 1.68 | 비교예 |
A3 | 22 | 0.035 | 3 | 2.64 | 1.74 | 발명예 |
A4 | 12 | 0.051 | 2 | 2.18 | 1.7 | 발명예 |
A5 | 40 | 0.009 | 8 | 3.94 | 1.69 | 비교예 |
A6 | 17 | 0.076 | 6 | 3.5 | 1.67 | 비교예 |
A7 | 21 | 0.018 | 2 | 2.56 | 1.73 | 발명예 |
A8 | 5 | 0.062 | 7 | 3.29 | 1.65 | 비교예 |
A9 | 20 | 0.006 | 14 | 3.03 | 1.65 | 비교예 |
A10 | 24 | 0.013 | 3 | 2.34 | 1.71 | 발명예 |
A11 | 15 | 0.026 | 4 | 2.14 | 1.7 | 발명예 |
A12 | 12 | 0.064 | 8 | 3.33 | 1.67 | 비교예 |
Claims (12)
- 중량%로 Si: 1.0 내지 4.0%, Mn: 0.1 내지 1.0%, Al: 0.1 내지 1.0%, Zn: 0.001 내지 0.01%, B: 0.0005 내지 0.005% 및 잔부는 Fe 및 불가피한 불순물을 포함하고,
강판 표면에 대하여, 입경이 50 내지 200nm인 Si 산화물의 밀도가 5개/㎛2 이하인 무방향성 전기강판. - 제1항에 있어서,
P:0.001 내지 0.1 중량%, C: 0.005 중량% 이하, S: 0.001 내지 0.005 중량%, N:0.005 중량% 이하 및 Ti: 0.005 중량% 이하를 더 포함하는 무방향성 전기강판. - 제1항에 있어서,
Sn 및 Sb 중 1종 이상을 단독 또는 그 합량으로 0.06 중량% 이하 더 포함하는 무방향성 전기강판. - 제1항에 있어서,
Cu: 0.05 중량% 이하, Ni: 0.05 중량% 이하, Cr: 0.05 중량% 이하, Zr: 0.01 중량% 이하, Mo: 0.01 중량% 이하, 및 V: 0.01 중량% 이하 중 1종 이상을 더 포함하는 무방향성 전기강판. - 삭제
- 제1항에 있어서,
철손(W15 /50)이 2.80W/kg 이하이고, 자속밀도(B50)이 1.70T 이상인 무방향성 전기강판. - 중량 %로 Si: 1.0 내지 4.0%, Mn: 0.1 내지 1.0%, Al: 0.1 내지 1.0%, Zn:0.001 내지 0.01%, B: 0.0005 내지 0.005% 및 잔부는 Fe 및 불가피한 불순물을 포함하는 슬라브를 가열하는 단계;
슬라브를 열간 압연하여 열연판을 제조하는 단계;
상기 열연판을 냉간압연하여 냉연판을 제조하는 단계 및
상기 냉연판을 최종 소둔하는 단계를 포함하고,
상기 최종 소둔하는 단계는 분위기 가스로서 수소 가스를 포함하고,
상기 분위기 가스 내의 수소 가스 함량 비가 하기 식 1을 만족하는 무방향성 전기강판의 제조방법.
[식 1]
0.01≤([Zn]+[B])×100/[H2]≤0.06
(식 1에서, [Zn] 및 [B]는 각각 Zn 및 B의 함량(중량%)을 나타내고, [H2]는 분위기 가스 내의 수소 가스 함량(부피%)를 나타낸다.) - 제7항에 있어서,
상기 슬라브는 P:0.001 내지 0.1 중량%, C: 0.005 중량% 이하, S: 0.001 내지 0.005 중량%, N:0.005 중량% 이하 및 Ti: 0.005 중량% 이하를 더 포함하는 무방향성 전기강판의 제조방법. - 제7항에 있어서,
상기 슬라브는 Sn 및 Sb 중 1종 이상을 단독 또는 그 합량으로 0.06 중량% 이하 더 포함하는 무방향성 전기강판의 제조방법. - 제7항에 있어서,
상기 슬라브는 Cu: 0.05 중량% 이하, Ni: 0.05 중량% 이하, Cr: 0.05 중량% 이하, Zr: 0.01 중량% 이하, Mo: 0.01 중량% 이하, 및 V: 0.01 중량% 이하 중 1종 이상을 더 포함하는 무방향성 전기강판의 제조방법. - 제7항에 있어서,
상기 열연판을 제조하는 단계 이후,
상기 열연판을 열연판 소둔하는 단계를 더 포함하는 무방향성 전기강판의 제조방법. - 삭제
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