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WO2025200245A1 - Acier au silicium non orienté à haute performance et son procédé de préparation - Google Patents

Acier au silicium non orienté à haute performance et son procédé de préparation

Info

Publication number
WO2025200245A1
WO2025200245A1 PCT/CN2024/112602 CN2024112602W WO2025200245A1 WO 2025200245 A1 WO2025200245 A1 WO 2025200245A1 CN 2024112602 W CN2024112602 W CN 2024112602W WO 2025200245 A1 WO2025200245 A1 WO 2025200245A1
Authority
WO
WIPO (PCT)
Prior art keywords
oriented silicon
silicon steel
performance non
temperature
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/112602
Other languages
English (en)
Chinese (zh)
Inventor
易正鑫
张毅
金宇晨
乔军
冯育磊
贺立红
李志超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wisdri Engineering and Research Incorporation Ltd
Original Assignee
Wisdri Engineering and Research Incorporation Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wisdri Engineering and Research Incorporation Ltd filed Critical Wisdri Engineering and Research Incorporation Ltd
Publication of WO2025200245A1 publication Critical patent/WO2025200245A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • 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
    • C21D8/1216—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
    • 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
    • C21D8/1216—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
    • C21D8/1272—Final recrystallisation annealing
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention belongs to the technical field of metal materials, and in particular relates to high-performance non-oriented silicon steel and a preparation method thereof.
  • Electricity is an indispensable energy source in modern society, the most common and important.
  • the production, transmission, and use of electrical energy are inseparable from generators, transmission transformers, motors, and various electrical equipment and components such as ballasts, amplifiers, voltage regulators, relays, and rectifiers.
  • Electromagnetic principles enable the conversion of mechanical energy into electrical energy, voltage into current, and the driving of electromechanical devices.
  • a key component of these devices is the electromagnet core, the raw material of which is electrical steel, a cornerstone of the power and electrical industry.
  • Silicon steel is the most widely used soft magnetic material in industry, and industrial non-oriented silicon steel is the most widely used electrical steel, widely used in various motors.
  • the performance of non-oriented silicon steel sheets not only directly affects power loss but also determines the performance, size, weight, and cost of products such as motors and transformers. Therefore, reducing iron loss and magnetic anisotropy and improving magnetic induction have become key research areas for silicon steel.
  • the object of the present invention is to provide a non-oriented silicon steel with low iron loss and high magnetic permeability.
  • the present invention provides a high-performance non-oriented silicon steel, which comprises the following components, in percentage by mass: C: 0-0.003%, Si: 1.0-4.5%, Al: 0.022-1.0%, Mn: 0.12-0.93%, N: 0-0.003%, S: 0-0.003%, P: 0-0.005%, and the remainder is Fe and unavoidable impurities.
  • the present invention also provides a method for preparing the above-mentioned high-performance non-oriented silicon steel, comprising the following steps: smelting molten steel according to a set composition, casting the molten steel into ingots, hot rolling, normalizing pickling, cold rolling and annealing the ingots to obtain high-performance non-oriented silicon steel.
  • the annealing comprises the following steps: (1) heating to an annealing temperature at a rate of 200-600° C./s in an inert atmosphere; and (2) maintaining the temperature at the annealing temperature and then cooling.
  • the annealing temperature is 700-1100°C.
  • Figure 2 is a comparison of magnetic properties in the TD direction under different insulation processes: (left) iron loss, (right) magnetic induction.
  • the hot coil is normalized and pickled and then cold rolled to obtain a 0.35 mm thick cold rolled strip.
  • the cold rolled strip is subjected to annealing process.
  • This embodiment provides a high-performance non-oriented silicon steel, which includes the following components, in percentage by mass: C: 0.003%; Si: 2.9%; Al: 0.75%; Mn: 0.15%; N: 0.0025%; S: 0.0015%; P: 0.002%, and the remainder is Fe and unavoidable impurities.
  • the hot coil is normalized and pickled and then cold rolled to obtain a 0.35 mm thick cold rolled strip.
  • This comparative example provides a non-oriented silicon steel.
  • the high-performance non-oriented silicon steel comprises the following components, in percentage by mass: C: 0.003%; Si: 2.9%; Al: 0.75%; Mn: 0.15%; N: 0.0025%; S: 0.0015%; P: 0.002%, and the remainder is Fe and unavoidable impurities.
  • the non-oriented silicon steel is prepared by the following steps.
  • the hot coil is normalized and pickled and then cold rolled to obtain a 0.35 mm thick cold rolled strip.
  • the cold rolled strip is subjected to annealing process.
  • This comparative example provides a non-oriented silicon steel.
  • the high-performance non-oriented silicon steel comprises the following components, in percentage by mass: C: 0.003%; Si: 2.9%; Al: 0.75%; Mn: 0.15%; N: 0.0025%; S: 0.0015%; P: 0.002%, and the remainder is Fe and unavoidable impurities.
  • the non-oriented silicon steel is prepared by the following steps.
  • P 15/50 is approximately 2.81 W/Kg
  • B 50 is approximately 1.71 T
  • P 10/400 is approximately 21.82 W/Kg
  • B 50 is approximately 1.72 T.
  • P 15/50 is approximately 2.69W/Kg
  • B 50 is approximately 1.70T
  • P 10/400 is approximately 21.54W/Kg
  • B 50 is approximately 1.71T.
  • P 15/50 is approximately 2.76W/Kg
  • B 50 is approximately 1.70T
  • P 10/400 is approximately 21.50W/Kg
  • B 50 is approximately 1.70T.
  • route 3 has the best magnetic properties.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

La présente invention concerne un acier au silicium non orienté à haute performance, comprenant les composants suivants en pourcentage en poids : C : 0 à 0,003 %, Si : 1,0 à 4,5 %, Al : 0,022 à 1,0 %, Mn : 0,12 à 0,93 %, N : 0 à 0,003 %, S : 0 à 0,003 %, P : 0 à 0,005 %, le reste étant du Fe et des impuretés inévitables. La présente invention concerne en outre un procédé de préparation de l'acier au silicium non orienté à haute performance, et un processus de recuit par chauffage flash et conservation de chaleur instantanée est utilisé. L'acier au silicium non orienté à haute performance est un acier au silicium non orienté ayant une faible perte dans le fer et une perméabilité élevée, présente une perte dans le fer Pt d'environ 2,81 W/Kg et une intensité d'induction magnétique B d'environ 1,71 T à basse fréquence, et présente une perte dans le fer Pt d'environ 21,82 W/Kg et une intensité d'induction magnétique B d'environ 1,72 T à haute fréquence.
PCT/CN2024/112602 2024-03-28 2024-08-16 Acier au silicium non orienté à haute performance et son procédé de préparation Pending WO2025200245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202410363296.7A CN118326258A (zh) 2024-03-28 2024-03-28 一种高性能无取向硅钢及其制备方法
CN202410363296.7 2024-03-28

Publications (1)

Publication Number Publication Date
WO2025200245A1 true WO2025200245A1 (fr) 2025-10-02

Family

ID=91775132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/112602 Pending WO2025200245A1 (fr) 2024-03-28 2024-08-16 Acier au silicium non orienté à haute performance et son procédé de préparation

Country Status (2)

Country Link
CN (1) CN118326258A (fr)
WO (1) WO2025200245A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118326258A (zh) * 2024-03-28 2024-07-12 中冶南方工程技术有限公司 一种高性能无取向硅钢及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102453837A (zh) * 2010-10-25 2012-05-16 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
CN113897543A (zh) * 2021-08-31 2022-01-07 中冶南方工程技术有限公司 无取向电工钢以及制造方法
CN115896597A (zh) * 2022-11-24 2023-04-04 江西荣和特种消防设备制造有限公司 一种消防设备电枢铁心用低成本、高性能薄规格无取向硅钢的制备方法
CN116445806A (zh) * 2022-01-07 2023-07-18 宝山钢铁股份有限公司 一种磁性能优良的无取向电工钢板及其制造方法
CN118326258A (zh) * 2024-03-28 2024-07-12 中冶南方工程技术有限公司 一种高性能无取向硅钢及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102453837A (zh) * 2010-10-25 2012-05-16 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
CN113897543A (zh) * 2021-08-31 2022-01-07 中冶南方工程技术有限公司 无取向电工钢以及制造方法
CN116445806A (zh) * 2022-01-07 2023-07-18 宝山钢铁股份有限公司 一种磁性能优良的无取向电工钢板及其制造方法
CN115896597A (zh) * 2022-11-24 2023-04-04 江西荣和特种消防设备制造有限公司 一种消防设备电枢铁心用低成本、高性能薄规格无取向硅钢的制备方法
CN118326258A (zh) * 2024-03-28 2024-07-12 中冶南方工程技术有限公司 一种高性能无取向硅钢及其制备方法

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