JP2019521246A - 高磁気誘導かつ低鉄損の無方向性ケイ素鋼板及びその製造方法 - Google Patents
高磁気誘導かつ低鉄損の無方向性ケイ素鋼板及びその製造方法 Download PDFInfo
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Abstract
Description
Siの含有量が、鋼の等級グレードAに対応する、0.1%≦Si≦0.30%である場合、磁束密度(磁気誘導)B50≧1.76T、鉄損P15/50≦7.00W/kgであり、
Siの含有量が、鋼の等級グレードBに対応する、0.3%<Si≦0.80%である場合、磁束密度B50≧1.75T、鉄損P15/50≦6.00W/kgであり、
Siの含有量が、鋼の等級グレードCに対応する、0.8%<Si≦1.20%である場合、磁束密度B50≧1.72T、鉄損P15/50≦4.00W/kgであり、
Siの含有量が、鋼の等級グレードDに対応する、1.2%<Si≦1.60%である場合、磁束密度B50≧1.70T、鉄損P15/50≦4.00W/kgである。
(1)製錬鋳造
上記の化学組成に基づいて、転炉製錬プロセス、RH精錬プロセス、及び連続鋳造プロセスを行い、鋳造スラブを形成する工程であり、上記連続鋳造プロセスでは、上記鋳造スラブの表面温度を1100℃から700℃に低下させる冷却プロセスにおける冷却速度を、2.5℃/分〜20℃/分に制御する。
(2)加熱
上記鋳造スラブを、加熱炉において加熱する工程であり、上記鋳造スラブの装入温度を600℃以下に制御する。
(3)次いで、熱間圧延、酸洗、冷間圧延、最終焼なまし、及びコーティングを行い、完成品の無方向性ケイ素鋼板を得る。
Siの含有量が、鋼の等級グレードAに対応する、0.1%≦Si≦0.30%である場合、磁束密度(磁気誘導)B50≧1.76T、鉄損P15/50≦7.00W/kgであり、
Siの含有量が、鋼の等級グレードBに対応する、0.3%<Si≦0.80%である場合、磁束密度B50≧1.75T、鉄損P15/50≦6.00W/kgであり、
Siの含有量が、鋼の等級グレードCに対応する、0.8%<Si≦1.20%である場合、磁束密度B50≧1.72T、鉄損P15/50≦4.00W/kgであり、
Siの含有量が、鋼の等級グレードDに対応する、1.2%<Si≦1.60%である場合、磁束密度B50≧1.70T、鉄損P15/50≦4.00W/kgである。
Claims (6)
- 化学組成が、質量パーセント基準で、C≦0.005%、Si:0.1%〜1.6%、Mn:0.1%〜0.5%、P≦0.2%、S≦0.004%、Al≦0.003%、N≦0.005%、Nb≦0.004%、V≦0.004%、及びTi≦0.003%であるとともに、残部がFe及び不可避的不純物である、高磁気誘導かつ低鉄損の無方向性ケイ素鋼板であって、
120≦[Mn]/[S]≦160、及び、
[Nb]/93+[V]/51+[Ti]/48+[Al]/27≦[C]/12+[N]/14
という関係を満たす、高磁気誘導かつ低鉄損の無方向性ケイ素鋼板。 - 前記化学組成において、120≦[Mn]/[S]≦140である、請求項1に記載の高磁気誘導かつ低鉄損の無方向性ケイ素鋼板。
- 前記Siの含有量が0.1%≦Si≦0.30%である場合、磁束密度B50≧1.76Tかつ鉄損P15/50≦7.00W/kgの電磁特性を有し、
前記Siの含有量が0.3%<Si≦0.80%である場合、磁束密度B50≧1.75Tかつ鉄損P15/50≦6.00W/kgの電磁特性を有し、
前記Siの含有量が0.8%<Si≦1.20%である場合、磁束密度B50≧1.72Tかつ鉄損P15/50≦4.00W/kgの電磁特性を有し、
前記Siの含有量が1.2%<Si≦1.60%である場合、磁束密度B50≧1.70Tかつ鉄損P15/50≦4.00W/kgの電磁特性を有する、
請求項1又は請求項2に記載の高磁気誘導かつ低鉄損の無方向性ケイ素鋼板。 - 請求項1〜請求項3のいずれか1つに記載の高磁気誘導かつ低鉄損の無方向性ケイ素鋼板の製造方法であって、
請求項1又は請求項2に記載の化学組成に基づいて、製錬プロセス、精錬プロセス、及び連続鋳造プロセスを行って、鋳造スラブを形成する工程1(製錬鋳造)であって、前記連続鋳造プロセスにおいて、前記鋳造スラブの表面温度を1100℃から700℃に低下させる冷却プロセスの冷却速度を2.5℃/分〜20℃/分に制御する、工程1と、
前記鋳造スラブを、加熱炉において加熱する工程2(加熱)であって、前記鋳造スラブの装入温度を600℃以下に制御する、工程2と、
次いで、熱間圧延、酸洗、冷間圧延、最終焼なまし、及びコーティングを行い、完成品の無方向性ケイ素鋼板を得る工程3と、
を含む、高磁気誘導かつ低鉄損の無方向性ケイ素鋼板の製造方法。 - 前記工程2における前記装入温度が300℃以下である、請求項4に記載の高磁気誘導かつ低鉄損の無方向性ケイ素鋼板の製造方法。
- 前記工程3によって得られた前記無方向性ケイ素鋼板は、
Siの含有量が0.1%≦Si≦0.30%である場合、磁束密度B50≧1.76Tかつ鉄損P15/50≦7.00W/kgの電磁特性を有し、
Siの含有量が0.3%<Si≦0.80%である場合、磁束密度B50≧1.75Tかつ鉄損P15/50≦6.00W/kgの電磁特性を有し、
Siの含有量が0.8%<Si≦1.20%である場合、磁束密度B50≧1.72Tかつ鉄損P15/50≦4.00W/kgの電磁特性を有し、
Siの含有量が1.2%<Si≦1.60%である場合、磁束密度B50≧1.70Tかつ鉄損P15/50≦4.00W/kgの電磁特性を有する、
請求項4又は請求項5に記載の高磁気誘導かつ低鉄損の無方向性ケイ素鋼板の製造方法。
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CN201610369192.2A CN105925884B (zh) | 2016-05-30 | 2016-05-30 | 一种高磁感、低铁损无取向硅钢片及其制造方法 |
PCT/CN2017/085324 WO2017206753A1 (zh) | 2016-05-30 | 2017-05-22 | 一种高磁感、低铁损无取向硅钢片及其制造方法 |
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CN102453837B (zh) * | 2010-10-25 | 2013-07-17 | 宝山钢铁股份有限公司 | 一种高磁感无取向硅钢的制造方法 |
JP5668460B2 (ja) * | 2010-12-22 | 2015-02-12 | Jfeスチール株式会社 | 無方向性電磁鋼板の製造方法 |
CN103361544B (zh) * | 2012-03-26 | 2015-09-23 | 宝山钢铁股份有限公司 | 无取向硅钢及其制造方法 |
CN104404396B (zh) * | 2014-11-24 | 2017-02-08 | 武汉钢铁(集团)公司 | 一种无需常化的高磁感无取向硅钢及用薄板坯生产方法 |
CN105925884B (zh) * | 2016-05-30 | 2018-03-09 | 宝山钢铁股份有限公司 | 一种高磁感、低铁损无取向硅钢片及其制造方法 |
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CN105925884A (zh) | 2016-09-07 |
US20190136336A1 (en) | 2019-05-09 |
JP6765448B2 (ja) | 2020-10-07 |
WO2017206753A1 (zh) | 2017-12-07 |
CN105925884B (zh) | 2018-03-09 |
RU2709544C1 (ru) | 2019-12-18 |
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