基本信息:
- 专利标题: processo de fabricação de folha de aço elétrico de grão orientado.
- 申请号:BR112012029861 申请日:2011-05-19
- 公开(公告)号:BR112012029861B1 公开(公告)日:2021-06-29
- 发明人: CHIE HAMA , ISAO IWANAGA , KENICHI MURAKAMI , MASAHIDE URAGOH , NORIHIRO YAMAMOTO , NORIKAZU FUJII , YOSHIYUKI USHIGAMI
- 申请人: NIPPON STEEL & SUMITOMO METAL CORP , NIPPON STEEL CORP
- 专利权人: NIPPON STEEL & SUMITOMO METAL CORP,NIPPON STEEL CORP
- 当前专利权人: NIPPON STEEL & SUMITOMO METAL CORP,NIPPON STEEL CORP
- 优先权: JP2010119482 2010-05-25
- 主分类号: B21B3/02
- IPC分类号: B21B3/02 ; C21D8/12 ; C22C38/00 ; C22C38/60 ; H01F1/16
In a method of manufacturing a grain-oriented electrical steel sheet including a nitriding treatment (step S7) and adopting so-called "low-temperature slab heating", the finish temperature of finish rolling in hot rolling (step S2) is set to 950°C or below, the cooling is started within 2 seconds after completion of the finish rolling, and a steel strip is coiled at 700°C or below. The cooling rate over the duration from the end of finish rolling to the start of coiling is set to 10°C/sec or above. In annealing (step S3) of the hot-rolled steel strip, the heating rate in the temperature range from 800°C to 1000°C is set to 5°C/sec or above.
公开/授权文献:
信息查询:
EspacenetIPC结构图谱:
B | 作业;运输 |
--B21 | 基本上无切削的金属机械加工;金属冲压 |
----B21B | 金属的轧制 |
------B21B3/00 | 需要或允许专门轧制方法或程序的特殊成分合金材料的轧制 |
--------B21B3/02 | .轧制特种铁合金 |