KR20200072859A - 방향성 전기강판 및 그의 제조방법 - Google Patents
방향성 전기강판 및 그의 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 실시예에 의한 방향성 전기강판의 개략적인 단면도이다.
| 온도 영역별 산화능 | 식1 | 식 2 | 식 3 | 구분 | ||
| 제1 승온 단계 | 제2 승온 단계 | 균열 단계 | ||||
| 0.46 | 0.044 | 0.18 | 0.416 | 0.136 | 0.28 | 비교재1 |
| 0.39 | 0.012 | 0.53 | 0.378 | 0.518 | -0.14 | 비교재2 |
| 0.4 | 0.036 | 0.87 | 0.364 | 0.834 | -0.47 | 비교재3 |
| 0.33 | 0.07 | 0.22 | 0.26 | 0.15 | 0.11 | 비교재4 |
| 0.14 | 0.426 | 0.54 | -0.286 | 0.114 | -0.4 | 비교재5 |
| 0.36 | 0.329 | 0.96 | 0.031 | 0.631 | -0.6 | 비교재6 |
| 0.38 | 0.95 | 0.23 | -0.57 | -0.72 | 0.15 | 비교재7 |
| 0.59 | 0.8 | 0.49 | -0.21 | -0.31 | 0.1 | 비교재8 |
| 0.18 | 0.62 | 0.85 | -0.44 | 0.23 | -0.67 | 비교재9 |
| 1.18 | 0.027 | 0.16 | 1.153 | 0.133 | 1.02 | 비교재10 |
| 1.84 | 0.015 | 0.56 | 1.825 | 0.545 | 1.28 | 비교재11 |
| 1.02 | 0.027 | 0.71 | 0.993 | 0.683 | 0.31 | 비교재12 |
| 1.44 | 0.1 | 0.11 | 1.34 | 0.01 | 1.33 | 비교재13 |
| 1.83 | 0.388 | 0.47 | 1.442 | 0.082 | 1.36 | 발명재1 |
| 0.95 | 0.256 | 0.51 | 0.694 | 0.254 | 0.44 | 발명재2 |
| 0.79 | 0.398 | 0.47 | 0.392 | 0.072 | 0.32 | 발명재3 |
| 1.53 | 0.234 | 0.58 | 1.296 | 0.346 | 0.95 | 발명재4 |
| 0.71 | 0.423 | 0.33 | 0.287 | -0.093 | 0.38 | 발명재5 |
| 1.51 | 0.59 | 0.55 | 0.92 | -0.04 | 0.96 | 발명재6 |
| 1.71 | 0.406 | 0.46 | 1.304 | 0.054 | 1.25 | 발명재7 |
| 1.02 | 0.136 | 0.33 | 0.884 | 0.194 | 0.69 | 발명재8 |
| 1.69 | 0.116 | 0.46 | 1.574 | 0.344 | 1.23 | 발명재9 |
| 0.76 | 0.159 | 0.39 | 0.601 | 0.231 | 0.37 | 발명재10 |
| 0.97 | 0.266 | 0.51 | 0.704 | 0.244 | 0.46 | 발명재11 |
| 1.2 | 0.24 | 0.46 | 0.96 | 0.22 | 0.74 | 발명재12 |
| 0.84 | 0.067 | 0.51 | 0.773 | 0.443 | 0.33 | 발명재13 |
| 1.76 | 0.371 | 0.47 | 1.389 | 0.099 | 1.29 | 발명재14 |
| 1.27 | 0.26 | 0.74 | 1.01 | 0.48 | 0.53 | 비교재14 |
| 1.01 | 0.79 | 0.15 | 0.22 | -0.64 | 0.86 | 비교재15 |
| 1.88 | 0.81 | 0.38 | 1.07 | -0.43 | 1.5 | 비교재16 |
| 0.96 | 0.85 | 0.85 | 0.11 | 0 | 0.11 | 비교재17 |
| 2.48 | 0.015 | 0.13 | 2.465 | 0.115 | 2.35 | 비교재18 |
| 3.4 | 0.031 | 0.48 | 3.369 | 0.449 | 2.92 | 비교재19 |
| 2.43 | 0.019 | 0.92 | 2.411 | 0.901 | 1.51 | 비교재20 |
| 3.45 | 0.056 | 0.12 | 3.394 | 0.064 | 3.33 | 비교재21 |
| 3 | 0.381 | 0.43 | 2.619 | 0.049 | 2.57 | 비교재22 |
| 3.13 | 0.202 | 0.71 | 2.928 | 0.508 | 2.42 | 비교재23 |
| 3.26 | 0.72 | 0.21 | 2.54 | -0.51 | 3.05 | 비교재24 |
| 2.44 | 0.71 | 0.52 | 1.73 | -0.19 | 1.92 | 비교재25 |
| 2.94 | 0.69 | 0.63 | 2.25 | -0.06 | 2.31 | 비교재26 |
| 철손 (W17/50) | 자속밀도 (B8) | 전기강판 기재 내의 Co 함량(중량%) | 금속 산화물 층으로의 Co 확산양(중량%) | 금속 산화물 층 내의 Co 함량(중량%) | 평균 β각도(O) | 구분 |
| 0.88 | 1.86 | 0.0204 | 0.0116 | 0.476 | 6 | 비교재1 |
| 0.85 | 1.88 | 0.0196 | 0.0124 | 0.509 | 5.4 | 비교재2 |
| 0.91 | 1.86 | 0.0232 | 0.0088 | 0.361 | 5.8 | 비교재3 |
| 0.88 | 1.89 | 0.021 | 0.011 | 0.452 | 4.6 | 비교재4 |
| 0.84 | 1.9 | 0.0208 | 0.0112 | 0.46 | 3.7 | 비교재5 |
| 0.87 | 1.88 | 0.0239 | 0.0081 | 0.333 | 5.8 | 비교재6 |
| 0.88 | 1.86 | 0.0236 | 0.0084 | 0.345 | 5.5 | 비교재7 |
| 0.88 | 1.89 | 0.0205 | 0.0115 | 0.472 | 5.1 | 비교재8 |
| 0.9 | 1.86 | 0.0244 | 0.0076 | 0.312 | 5.4 | 비교재9 |
| 0.88 | 1.89 | 0.0234 | 0.0086 | 0.353 | 5.1 | 비교재10 |
| 0.84 | 1.9 | 0.0214 | 0.0106 | 0.435 | 4.4 | 비교재11 |
| 0.88 | 1.89 | 0.0203 | 0.0117 | 0.481 | 5.4 | 비교재12 |
| 0.86 | 1.89 | 0.0201 | 0.0119 | 0.489 | 4.5 | 비교재13 |
| 0.8 | 1.92 | 0.0287 | 0.0033 | 0.136 | 2.6 | 발명재1 |
| 0.8 | 1.92 | 0.0317 | 0.0003 | 0.012 | 2.9 | 발명재2 |
| 0.81 | 1.92 | 0.0272 | 0.0048 | 0.197 | 1.8 | 발명재3 |
| 0.8 | 1.92 | 0.0269 | 0.0051 | 0.209 | 1.9 | 발명재4 |
| 0.81 | 1.94 | 0.0283 | 0.0037 | 0.152 | 2.7 | 발명재5 |
| 0.79 | 1.93 | 0.0265 | 0.0055 | 0.226 | 2.6 | 발명재6 |
| 0.79 | 1.94 | 0.0273 | 0.0047 | 0.193 | 1.9 | 발명재7 |
| 0.8 | 1.92 | 0.0301 | 0.0019 | 0.078 | 2.9 | 발명재8 |
| 0.81 | 1.92 | 0.0271 | 0.0049 | 0.201 | 2.9 | 발명재9 |
| 0.79 | 1.94 | 0.031 | 0.001 | 0.041 | 2.1 | 발명재10 |
| 0.81 | 1.93 | 0.0318 | 0.0002 | 0.008 | 2.6 | 발명재11 |
| 0.8 | 1.91 | 0.0271 | 0.0049 | 0.201 | 2.6 | 발명재12 |
| 0.81 | 1.94 | 0.0264 | 0.0056 | 0.23 | 2.1 | 발명재13 |
| 0.81 | 1.93 | 0.0276 | 0.0044 | 0.181 | 2.6 | 발명재14 |
| 0.84 | 1.89 | 0.0234 | 0.0086 | 0.353 | 3.8 | 비교재14 |
| 0.85 | 1.89 | 0.0198 | 0.0122 | 0.501 | 5.1 | 비교재15 |
| 0.86 | 1.9 | 0.0197 | 0.0123 | 0.505 | 3.5 | 비교재16 |
| 0.85 | 1.88 | 0.0209 | 0.0111 | 0.456 | 5.1 | 비교재17 |
| 0.95 | 1.86 | 0.0195 | 0.0125 | 0.513 | 5.9 | 비교재18 |
| 0.85 | 1.88 | 0.0217 | 0.0103 | 0.423 | 5.2 | 비교재19 |
| 0.93 | 1.85 | 0.0253 | 0.0067 | 0.275 | 5.1 | 비교재20 |
| 0.86 | 1.88 | 0.019 | 0.013 | 0.534 | 5 | 비교재21 |
| 0.84 | 1.9 | 0.0239 | 0.0081 | 0.333 | 3.7 | 비교재22 |
| 0.85 | 1.89 | 0.021 | 0.011 | 0.452 | 5.1 | 비교재23 |
| 0.95 | 1.87 | 0.0252 | 0.0068 | 0.279 | 5.3 | 비교재24 |
| 0.88 | 1.88 | 0.0252 | 0.0068 | 0.279 | 5.2 | 비교재25 |
| 0.89 | 1.85 | 0.0251 | 0.0069 | 0.283 | 5.2 | 비교재26 |
Claims (11)
- 중량%로, Si: 2.0 내지 6.0%, C: 0.005% 이하(0%를 제외함), Sb: 0.01 내지 0.05%, Sn:0.03 내지 0.08%, Cr:0.01 내지 0.2% 및 Co: 0.0003 내지 0.097% 포함하고, 잔부 Fe 및 불가피한 불순물을 포함하는 전기강판 기재 및
상기 전기강판 기재의 표면 상에 위치하는 금속 산화물층을 포함하고,
상기 금속 산화물층은 Co를 0.0005 내지 0.25 중량% 포함하는 방향성 전기강판. - 제1항에 있어서,
상기 전기강판 기재는 Al: 0.005 내지 0.04 중량%, Mn: 0.01 내지 0.2 중량%, N:0.01 중량% 이하, S:0.01 중량% 이하 및 P:0.0005 내지 0.045 중량% 중 1종 이상을 더 포함하는 방향성 전기강판. - 제1항에 있어서,
상기 금속 산화물층은 Si:10 내지 30 중량%, O: 30 내지 55 중량%, Mg:25 내지 50 중량% 및 잔부 Fe 및 불가피한 불순물을 더 포함하는 방향성 전기강판. - 제1항에 있어서,
상기 금속 산화물층의 두께는 0.5 내지 10 ㎛인 방향성 전기강판. - 제1항에 있어서,
상기 전기강판 기재는 결정립을 포함하고, 결정립의 평균 β 각도가 3° 이하인 방향성 전기강판.
(이 때, β 각도란 압연수직면을 기준으로 보았을 때, 집합 조직의 [001]방향이 압연 방향축과 이루는 각도를 의미한다.) - 중량%로, Si: 2.0 내지 6.0%, C: 0.02 내지 0.08%, Sb: 0.01 내지 0.05%, Sn:0.03 내지 0.08%, Cr:0.01 내지 0.2% 및 Co: 0.0005 내지 0.1% 포함하고, 잔부 Fe 및 불가피한 불순물을 포함하는 슬라브를 가열하는 단계;
상기 슬라브를 열간 압연하여 열연판을 제조하는 단계;
상기 열연판을 냉간 압연하여 냉연판을 제조하는 단계;
상기 냉연판을 1차 재결정 소둔하는 단계; 및
상기 1차 재결정 소둔한 냉연판을 2차 재결정소둔하는 단계;를 포함하고,
상기 1차 재결정 소둔하는 단계는 제1 승온 단계, 제2 승온 단계 및 균열 단계를 포함하고,
상기 제1 승온 단계의 산화능은 0.7 내지 2.0이고, 제2 승온 단계의 산화능은 0.05 내지 0.6이고, 균열 단계의 산화능은 0.3 내지 0.6인 방향성 전기강판 제조방법. - 제6항에 있어서,
상기 제1 승온 단계의 산화능 및 상기 제2 승온 단계의 산화능이 하기 식 1을 만족하는 방향성 전기강판 제조방법.
[식 1]
0.3 ≤ [P1] - [P2] ≤ 1.6
(식 1에서 [P1] 및 [P2]는 각각 제1 승온 단계의 산화능 및 제2 승온 단계의 산화능을 의미한다.) - 제6항에 있어서,
상기 제2 승온 단계의 산화능 및 상기 균열 단계의 산화능이 하기 식 2를 만족하는 방향성 전기강판 제조방법.
[식 2]
-0.1 ≤ [P3] - [P2] ≤ 0.5
(식 2에서 [P2] 및 [P3]는 각각 제2 승온 단계의 산화능 및 균열 단계의 산화능을 의미한다.) - 제6항에 있어서,
상기 제1 승온 단계의 산화능 및 상기 균열 단계의 산화능이 하기 식 3를 만족하는 방향성 전기강판 제조방법.
[식 3]
0.3 ≤ [P1] - [P3] ≤ 1.5
(식 3에서 [P1] 및 [P3]는 각각 제1 승온 단계의 산화능 및 균열 단계의 산화능을 의미한다.) - 제6항에 있어서,
상기 제1 승온 단계는 상기 냉연판을 710 내지 770℃의 종료온도까지 승온하는 단계이고,
상기 제2 승온 단계는 제1 승온 단계의 종료 온도에서 830 내지 890℃의 종료온도까지 온도를 승온하는 단계이고,
상기 균열 단계는 제2 승온 단계의 종료 온도 내지 900℃의 범위에서 온도를 유지하는 단계인 방향성 전기강판 제조방법. - 제6항에 있어서,
상기 2차 재결정 소둔하는 단계는 900 내지 1210℃의 균열 온도에서 수행하는 방향성 전기강판 제조방법.
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| US17/413,893 US12331375B2 (en) | 2018-12-13 | 2019-12-10 | Grain-oriented electrical steel sheet and method for producing same |
| EP19894709.5A EP3896187A4 (en) | 2019-12-10 | Grain-oriented electrical steel sheet and method for producing same | |
| CN201980083117.1A CN113195770B (zh) | 2018-12-13 | 2019-12-10 | 取向电工钢板及其制造方法 |
| JP2021534183A JP7365414B2 (ja) | 2018-12-13 | 2019-12-10 | 方向性電磁鋼板およびその製造方法 |
| PCT/KR2019/017394 WO2020122558A1 (ko) | 2018-12-13 | 2019-12-10 | 방향성 전기강판 및 그의 제조방법 |
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| WO2020122558A1 (ko) | 2020-06-18 |
| CN113195770A (zh) | 2021-07-30 |
| JP7365414B2 (ja) | 2023-10-19 |
| JP2022512498A (ja) | 2022-02-04 |
| CN113195770B (zh) | 2023-03-14 |
| US12331375B2 (en) | 2025-06-17 |
| US20220064749A1 (en) | 2022-03-03 |
| EP3896187A1 (en) | 2021-10-20 |
| KR102171694B1 (ko) | 2020-10-29 |
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