RU2013114861A - METHOD FOR PRODUCING PRODUCTS FROM TEXTURED ELECTRICAL STEEL WITH HIGH DENSITY OF MAGNETIC FLOW - Google Patents

METHOD FOR PRODUCING PRODUCTS FROM TEXTURED ELECTRICAL STEEL WITH HIGH DENSITY OF MAGNETIC FLOW Download PDF

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RU2013114861A
RU2013114861A RU2013114861/02A RU2013114861A RU2013114861A RU 2013114861 A RU2013114861 A RU 2013114861A RU 2013114861/02 A RU2013114861/02 A RU 2013114861/02A RU 2013114861 A RU2013114861 A RU 2013114861A RU 2013114861 A RU2013114861 A RU 2013114861A
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steel
temperature
normalization
strip
sheets
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RU2552562C2 (en
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Ци СЮЙ
Каньи ЧЭНЬ
Гобао ЛИ
Вэйчжун ЦЗЮ
Бинчжан ЦЗЮ
Дэцзюнь СУ
Жэньбяо ЧЖАН
Хай ЛЮ
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Баошан Айрон Энд Стил Ко., Лтд.
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • C21D8/0284—Application of a separating or insulating coating
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
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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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1222—Hot rolling
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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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1233—Cold rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1272—Final recrystallisation annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • 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
    • C21D8/1283—Application of a separating or insulating coating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets

Abstract

Способ производства изделия из текстурированной электротехнической стали с высокой плотностью магнитного потока, включающий следующие шаги:1) выплавка и отливка:химический состав текстурированной электротехнической стали таков, мас.%: С - 0,035-0,065, Si - 2,9-4,0, Mn - 0,05-0,20, S - 0,005-0,01, Al - 0,015-0,035, N - 0,004-0,009, Sn - 0,005-0,090, Nb - 0,200-0,800, железо Fe и неустранимые включения - остальное; при этом после выплавки во вращающейся печи или электрической печи расплавленную сталь подвергают вторичному рафинированию, а затем отливают стальные слябы;2) горячая прокатка:стальные слябы нагревают в нагревательной печи до 1090-1200°С, а затем посредством горячей прокатки получают стальную полосу при начальной температуре 1180°C с завершающим шагом при конечной температуре 860°C, после чего стальную полосу охлаждают ламинарным потоком воды до уровня ниже 650°C, а затем ее закручивают в рулон;3) нормализация:свернутую в рулон полосу нормализуют при температуре нормализации 1050-1180°C в течение 1-20 с, затем при температуре нормализации 850-950°C в течение 30-200 с, после чего сразу охлаждают со скоростью охлаждения 10-60°C/с;4) холодная прокатка:после нормализации из стальной полосы посредством холодной прокатки получают листы стали с толщиной, соответствующей итоговому изделию, с суммарным коэффициентом обжатия не менее 75%;5) обезуглероживающий отжиг:выполняют обезуглероживание листов стали до температуры 800-860°C при темпе роста температуры 15-35°C/с, выдерживая их при данной температуре в течение 90-160 с;6) нанесение покрытия из MgO:на листы стали наносят покрытие, химический состав которого таков, мас.%: NHCl - 0,1-10 и PN- 0,5-30, MgO, являющийся основным компонентом, - остальное;7) высокотемператA method of manufacturing a product from textured electrical steel with a high magnetic flux density, comprising the following steps: 1) smelting and casting: the chemical composition of the textured electrical steel is as follows, wt.%: C - 0.035-0.065, Si - 2.9-4.0, Mn - 0.05-0.20, S - 0.005-0.01, Al - 0.015-0.035, N - 0.004-0.009, Sn - 0.005-0.090, Nb - 0.200-0,800, Fe iron and unrecoverable inclusions - the rest; after melting in a rotary kiln or electric furnace, the molten steel is subjected to secondary refining, and then steel slabs are cast; 2) hot rolling: steel slabs are heated in a heating furnace to 1090-1200 ° C, and then a hot strip is obtained by hot rolling at the initial at a temperature of 1180 ° C with a final step at a final temperature of 860 ° C, after which the steel strip is cooled by a laminar flow of water to a level below 650 ° C, and then it is twisted into a roll; 3) normalization: the strip rolled into a roll is normalized at a temperature of normalization of 1050-1180 ° C for 1-20 s, then at a temperature of normalization of 850-950 ° C for 30-200 s, after which it is immediately cooled with a cooling rate of 10-60 ° C / s; 4) cold rolling : after normalization, sheets of steel with a thickness corresponding to the final product with a total reduction ratio of at least 75% are obtained from the steel strip through cold rolling; 5) decarburization annealing: decarburization of the steel sheets to a temperature of 800-860 ° C is performed at a temperature growth rate of 15- 35 ° C / s, keeping them at a given temperature for е 90-160 s; 6) coating from MgO: a coating is applied to the steel sheets, the chemical composition of which is, wt.%: NHCl - 0.1-10 and PN-0.5-30, MgO, which is the main component, - the rest; 7) high temperature

Claims (1)

Способ производства изделия из текстурированной электротехнической стали с высокой плотностью магнитного потока, включающий следующие шаги:A method of manufacturing a product from textured electrical steel with a high magnetic flux density, comprising the following steps: 1) выплавка и отливка:1) smelting and casting: химический состав текстурированной электротехнической стали таков, мас.%: С - 0,035-0,065, Si - 2,9-4,0, Mn - 0,05-0,20, S - 0,005-0,01, Al - 0,015-0,035, N - 0,004-0,009, Sn - 0,005-0,090, Nb - 0,200-0,800, железо Fe и неустранимые включения - остальное; при этом после выплавки во вращающейся печи или электрической печи расплавленную сталь подвергают вторичному рафинированию, а затем отливают стальные слябы;the chemical composition of textured electrical steel is as follows, wt.%: C - 0.035-0.065, Si - 2.9-4.0, Mn - 0.05-0.20, S - 0.005-0.01, Al - 0.015-0.035 , N - 0.004-0.009, Sn - 0.005-0.090, Nb - 0.200-0.800, Fe iron and fatal inclusions - the rest; after melting in a rotary kiln or electric furnace, the molten steel is subjected to secondary refining, and then steel slabs are cast; 2) горячая прокатка:2) hot rolling: стальные слябы нагревают в нагревательной печи до 1090-1200°С, а затем посредством горячей прокатки получают стальную полосу при начальной температуре 1180°C с завершающим шагом при конечной температуре 860°C, после чего стальную полосу охлаждают ламинарным потоком воды до уровня ниже 650°C, а затем ее закручивают в рулон;steel slabs are heated in a heating furnace to 1090-1200 ° C, and then by hot rolling a steel strip is obtained at an initial temperature of 1180 ° C with a final step at a final temperature of 860 ° C, after which the steel strip is cooled by a laminar flow of water to a level below 650 ° C, and then it is rolled up; 3) нормализация:3) normalization: свернутую в рулон полосу нормализуют при температуре нормализации 1050-1180°C в течение 1-20 с, затем при температуре нормализации 850-950°C в течение 30-200 с, после чего сразу охлаждают со скоростью охлаждения 10-60°C/с;the rolled strip is normalized at a normalization temperature of 1050-1180 ° C for 1-20 s, then at a normalization temperature of 850-950 ° C for 30-200 s, after which it is immediately cooled at a cooling rate of 10-60 ° C / s ; 4) холодная прокатка:4) cold rolling: после нормализации из стальной полосы посредством холодной прокатки получают листы стали с толщиной, соответствующей итоговому изделию, с суммарным коэффициентом обжатия не менее 75%;after normalization, from the steel strip by means of cold rolling, sheets of steel with a thickness corresponding to the final product, with a total reduction ratio of at least 75%, are obtained; 5) обезуглероживающий отжиг:5) decarburization annealing: выполняют обезуглероживание листов стали до температуры 800-860°C при темпе роста температуры 15-35°C/с, выдерживая их при данной температуре в течение 90-160 с;decarburization of steel sheets to a temperature of 800-860 ° C is carried out at a temperature growth rate of 15-35 ° C / s, keeping them at this temperature for 90-160 s; 6) нанесение покрытия из MgO:6) MgO coating: на листы стали наносят покрытие, химический состав которого таков, мас.%: NH4Cl - 0,1-10 и P3N5 - 0,5-30, MgO, являющийся основным компонентом, - остальное;the steel sheets are coated, the chemical composition of which is, wt.%: NH 4 Cl - 0.1-10 and P 3 N 5 - 0.5-30, MgO, which is the main component, the rest; 7) высокотемпературный отжиг:7) high temperature annealing: листы стали сначала нагревают до температуры 700-900°C, затем вторично нагревают до 1200°C при темпе вторичного увеличения температуры 9-17°C/ч и выдерживают при 1200°C в течение 20 ч для выполнения очищающего отжига;the steel sheets are first heated to a temperature of 700-900 ° C, then reheated to 1200 ° C at a rate of secondary temperature increase of 9-17 ° C / h and kept at 1200 ° C for 20 hours to perform a cleaning annealing; 8) нанесение слоя изоляционного покрытия:8) applying a layer of insulating coating: после высокотемпературного отжига поверхностей стальных листов на них наносится изоляционное покрытие, а затем, после горячего вытягивания, отпуска и отжига, получают итоговое изделие из текстурированной электротехнической стали с высокой плотностью магнитного потока и превосходными магнитными свойствами. after high-temperature annealing of the surfaces of steel sheets, an insulating coating is applied to them, and then, after hot drawing, tempering, and annealing, the final product is made of textured electrical steel with a high magnetic flux density and excellent magnetic properties.
RU2013114861/02A 2010-09-30 2011-04-14 Method of production of texturised electrical steel sheet with high magnetic flux density RU2552562C2 (en)

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CN2010102989547A CN102443736B (en) 2010-09-30 2010-09-30 Method for producing high magnetic flux-density oriented silicon steel product
PCT/CN2011/072768 WO2012041054A1 (en) 2010-09-30 2011-04-14 Production method of grain-oriented silicon steel with high magnetic flux density

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CN104120233A (en) * 2014-07-02 2014-10-29 东北大学 Method of rolling to prepare oriented high-silicon steel plate
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