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RU2017118524A - Способ изготовления текстурированной листовой электротехнической стали - Google Patents

Способ изготовления текстурированной листовой электротехнической стали Download PDF

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RU2017118524A
RU2017118524A RU2017118524A RU2017118524A RU2017118524A RU 2017118524 A RU2017118524 A RU 2017118524A RU 2017118524 A RU2017118524 A RU 2017118524A RU 2017118524 A RU2017118524 A RU 2017118524A RU 2017118524 A RU2017118524 A RU 2017118524A
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Такэси ИМАМУРА
Ясуюки ХАЯКАВА
Масанори ТАКЕНАКА
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ДжФЕ СТИЛ КОРПОРЕЙШН
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Claims (18)

1. Способ изготовления текстурированной листовой электротехнической стали, включающий в себя:
повторный нагрев стального сляба в температурном диапазоне, составляющем 1300°С или менее, причем стальной сляб имеет состав, содержащий в % (масс.) или ч./млн. (масс.) С от 0,002% до 0,08%, Si от 2,0% до 8,0%, Mn от 0,005% до 1,0%, N менее чем 50 ч./млн., S менее чем 50 ч./млн., Se менее чем 50 ч./млн. и раств. Al менее чем 100 ч./млн., при этом балансовые компоненты представляют собой Fe и неизбежные примеси;
горячую прокатку повторно нагретого стального сляба для получения горячекатаной листовой стали;
необязательно отжиг в горячем состоянии горячекатаной листовой стали;
холодную прокатку горячекатаной листовой стали однократно, или двукратно, или многократно с промежуточным отжигом между ними для получения холоднокатаной листовой стали, имеющей конечную толщину листа;
проведение обезуглероживающего отжига холоднокатаной листовой стали, который также используется в качестве первичного рекристаллизационного отжига;
нанесение отжигового сепаратора на поверхность листовой стали после обезуглероживающего отжига; и
проведение конечного отжига листовой стали с нанесенном отжиговым сепаратором,
при этом стальной сляб также содержит в % (масс.) по меньшей мере один из компонентов, выбранных из: Sn от 0,010% до 0,200%, Sb от 0,010% до 0,200%, Mo от 0,010% до 0,150% и Р от 0,010% до 0,150%,
причем удовлетворяется соотношение Td ≥ Tf, где Td (°С) – наибольшая температура, при которой листовую сталь подвергают отжигу при обезуглероживающем отжиге, а Tf (°C) – наибольшая температура до начала вторичной рекристаллизации листовой стали при конечном отжиге.
2. Способ по п. 1, в котором листовую сталь выдерживают при температуре Td (°С) или менее в течение 20 часов и более при конечном отжиге.
3. Способ по п. 1 или 2, в котором конечный отжиг листовой стали проводят при температуре от 400°С до 700°С в течение 10 часов и более.
4. Способ по п. 1 или 2, в котором атмосферой отжига до начала вторичной рекристаллизации при конечном отжиге является атмосфера N2.
5. Способ по п. 1 или 2, в котором стальной сляб также содержит в % (масс.) или ч./млн. (масс.) по меньшей мере один компонент, выбранный из: Ni от 0,010% до 1,50%, Cr от 0,01% до 0,50%, Cu от 0,01% до 0,50%, Bi от 0,005% до 0,50%, Те от 0,005% до 0,050% и Nb от 10 ч./млн. до 100 ч./млн.
6. Способ по п. 3, в котором атмосферой отжига до начала вторичной рекристаллизации при конечном отжиге является атмосфера N2.
7. Способ по п. 3, в котором стальной сляб также содержит в % (масс.) или ч./млн. (масс.) по меньшей мере один компонент, выбранный из: Ni от 0,010% до 1,50%, Cr от 0,01% до 0,50%, Cu от 0,01% до 0,50%, Bi от 0,005% до 0,50%, Те от 0,005% до 0,050% и Nb от 10 ч./млн. до 100 ч./млн.
8. Способ по п. 4, в котором стальной сляб также содержит в % (масс.) или ч./млн. (масс.) по меньшей мере один компонент, выбранный из: Ni от 0,010% до 1,50%, Cr от 0,01% до 0,50%, Cu от 0,01% до 0,50%, Bi от 0,005% до 0,50%, Те от 0,005% до 0,050% и Nb от 10 ч./млн. до 100 ч./млн.
9. Способ по п. 6, в котором стальной сляб также содержит в % (масс.) или ч./млн. (масс.) по меньшей мере один компонент, выбранный из: Ni от 0,010% до 1,50%, Cr от 0,01% до 0,50%, Cu от 0,01% до 0,50%, Bi от 0,005% до 0,50%, Те от 0,005% до 0,050% и Nb от 10 ч./млн. до 100 ч./млн.
RU2017118524A 2014-10-30 2015-10-30 Способ изготовления текстурированной листовой электротехнической стали RU2676199C2 (ru)

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JP2014221910A JP6260513B2 (ja) 2014-10-30 2014-10-30 方向性電磁鋼板の製造方法
JP2014-221910 2014-10-30
PCT/JP2015/005486 WO2016067636A1 (ja) 2014-10-30 2015-10-30 方向性電磁鋼板の製造方法

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JP2016089194A (ja) 2016-05-23
CN107075603A (zh) 2017-08-18
KR20170070240A (ko) 2017-06-21
BR112017008589A2 (pt) 2017-12-19
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RU2676199C2 (ru) 2018-12-26
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