RU2017131904A - Лист из текстурированной электротехнической стали и способ его изготовления - Google Patents

Лист из текстурированной электротехнической стали и способ его изготовления Download PDF

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RU2017131904A
RU2017131904A RU2017131904A RU2017131904A RU2017131904A RU 2017131904 A RU2017131904 A RU 2017131904A RU 2017131904 A RU2017131904 A RU 2017131904A RU 2017131904 A RU2017131904 A RU 2017131904A RU 2017131904 A RU2017131904 A RU 2017131904A
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sheet
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decarburization
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Ясуюки ХАЯКАВА
Кунихиро СЕНДА
Такаси ТЭРАСИМА
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    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/1272—Final recrystallisation annealing
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
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Claims (15)

1. Лист из текстурированной электротехнической стали, имеющей химический состав, содержащий в масс.%: С 0,005% или менее, Si 2,0-4,5% и Mn 0,5% или менее, а также содержащий Sb и P в соответствующих диапазонах, удовлетворяющих 0,01% ≤ [%Sb] ≤ 0,20% и 0,02% ≤ [%P] ≤ 2,0 × [%Sb], остальное представляет собой Fe и неизбежные примеси, причём когда стальной лист возбуждается до 1,0 Тл при 50 Гц в направлении, поперечном направлению прокатки, намагничивающая сила (TD-H10) и потери в железе (TD-W10) составляют соответственно (TD-H10) ≥ 200 А/м и (TD-W10) ≥ 1,60 Вт/кг.
2. Лист по п. 1, в котором химический состав дополнительно содержит в масс.%: один или нескольких элементов, выбранных из Ni 0,005-1,50%, Sn 0,03-0,20%, Cu 0,02-0,50%, Cr 0,02-0,50%, Mo 0,01-0,50% и Nb 0,002-0,01%.
3. Способ изготовления листа из текстурированной электротехнической стали, включающий:
получение стального сляба, имеющего химический состав, содержащий в масс.%: С 0,08% или менее, Si 2,0-4,5% и Mn 0,5% или менее, содержащий каждого из S, Se и O менее 50 млн-1, N менее 60 млн-1 и раств. Al менее 100 млн-1, а также содержащего Sb и P в соответствующих диапазонах, удовлетворяющих 0,01% ≤ [%Sb] ≤ 0,20% и 0,02% ≤ [%P] ≤ 2,0 × [%Sb], остальное представляет собой Fe и случайные примеси;
необязательно повторный нагрев стального сляба;
после этого горячую прокатку стального сляба для получения горячекатаного листа;
необязательно отжиг горячекатаного листа;
после этого холодную прокатку горячекатаного листа однократную или двукратную или многократную с промежуточным отжигом, выполненными между ними, для получения холоднокатаного листа с конечной толщиной листа;
после этого проведение обезуглероживания и отжига первичной рекристаллизации холоднокатаного листа для получения листа, подвергнутого обезуглероживанию и отжигу первичной рекристаллизации;
после этого нанесение отжигового сепаратора, в основном состоящего из MgO, на лист, подвергнутый обезуглероживанию и отжигу первичной рекристаллизации;
после этого выполнение отжига вторичной рекристаллизации листа, подвергнутого обезуглероживанию и первичной рекристаллизации, чтобы получить лист, подвергнутый отжигу вторичной рекристаллизации, и
дополнительно выполнение выравнивающего отжига листа, подвергнутого отжигу вторичной рекристаллизации,
причём 2,0-15,0 масс.% сульфата магния содержится в отжиговом сепараторе,
выравнивающий отжиг проводят при температуре 830°С или выше в атмосфере с парциальным давлением H2 0,3% или более, и
когда стальной лист возбуждается до 1,0 Тл при 50 Гц в направлении поперечном прокатке, намагничивающая сила (TD-H10) и потери в железе (TD-W10) составляют соответственно (TD-H10) ≥ 200 А/м и (TD-W10) ≥ 1,60 Вт/кг.
RU2017131904A 2015-02-13 2015-02-13 Лист из текстурированной электротехнической стали и способ его изготовления RU2688348C2 (ru)

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JP5754097B2 (ja) * 2010-08-06 2015-07-22 Ｊｆｅスチール株式会社 方向性電磁鋼板およびその製造方法
KR101625540B1 (ko) * 2012-07-26 2016-05-30 제이에프이 스틸 가부시키가이샤 방향성 전자 강판의 제조 방법
JP6031951B2 (ja) * 2012-11-09 2016-11-24 Ｊｆｅスチール株式会社 方向性電磁鋼板およびその製造方法
JP5949813B2 (ja) * 2013-03-07 2016-07-13 Ｊｆｅスチール株式会社 方向性電磁鋼板の製造方法

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