KR960007798A - Manufacturing method of oriented electrical steel sheet with excellent glass coating properties - Google Patents

Manufacturing method of oriented electrical steel sheet with excellent glass coating properties Download PDF

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Publication number
KR960007798A
KR960007798A KR1019940021390A KR19940021390A KR960007798A KR 960007798 A KR960007798 A KR 960007798A KR 1019940021390 A KR1019940021390 A KR 1019940021390A KR 19940021390 A KR19940021390 A KR 19940021390A KR 960007798 A KR960007798 A KR 960007798A
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KR
South Korea
Prior art keywords
annealing
steel sheet
electrical steel
oriented electrical
less
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Application number
KR1019940021390A
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Korean (ko)
Other versions
KR970007032B1 (en
Inventor
최규승
Original Assignee
김만제
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
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Application filed by 김만제, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소 filed Critical 김만제
Priority to KR1019940021390A priority Critical patent/KR970007032B1/en
Priority to JP51372794A priority patent/JP2607869B2/en
Priority to PCT/KR1994/000160 priority patent/WO1995013401A1/en
Priority to US08/481,353 priority patent/US5653821A/en
Priority to EP95900316A priority patent/EP0709470B1/en
Priority to DE1994628537 priority patent/DE69428537T2/en
Publication of KR960007798A publication Critical patent/KR960007798A/en
Application granted granted Critical
Publication of KR970007032B1 publication Critical patent/KR970007032B1/en

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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
    • C21D8/12—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
    • 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
    • C21D1/76—Adjusting the composition of the atmosphere
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon

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

Abstract

본 발명은 변압기, 전동기, 발전기 및 기타 전자기기등의 철심재료로 사용되는 방향성 전기강판의 제조방법에 관한 것으로써 저온스라브 가열방법에서의 최종 마무리 소둔 전공정인 2차 회복소둔 공정을 개량함으로써 우수한 그라스 피막특성을 갖는 방향성 전기강판을 제조하고자 하는데, 그 목적이 있다. 중량%로 C;0.035-0.050%, Si;2.9-3.3%, P:0.016% 이하, 용존 Al:0.011-0.017%, N:0.0080-0.012%, S:0.007%, 이하 Ni과 Cr의 단독 또는 복합:0.06-0.18%, Mn:0.32%이하 Cu:0.6%이하 잔부 Fe 및 기타 불가피한 불순물 조성되는 강 슬라브를 1250-1320℃의 온도구간에 서 재가열하여 열간압연한후 이후 열연판 소둔을 행하지 않고 1차 냉간압연에 의해 0.60-0.75㎜ 두께로 한 다음 820-870℃의 습수소 분위기에서 탈탄소둔을 행한후 최 종 두께로 2차 냉간압연을 행한 다음, 중간 회복 수둔을 행하고 MgO를 주성분으로 하는 소둔분리제를 도포한 후 1150-1200℃의 10시간 이상의 최종마무리 소둔을 행하여 방향성 전기강판을 제조하는방법에 있어서 상기 중간회복소둔이 600-750℃의 온도구간 및 PH20/PH2가 0.62-0.88인 습윤분위기하에서 45초-2분동안 행해지는 것을 특징으로 하는 그라스 피막 특성이 우수한 방향성 전기강판의 제조방법을 그 요지로 한다.The present invention relates to a method for manufacturing a grain-oriented electrical steel sheet used as iron core materials for transformers, electric motors, generators, and other electronic devices, and improves the secondary recovery annealing process, which is the final step of final annealing in low temperature slab heating. To produce a grain-oriented electrical steel sheet having a coating property, the purpose is. By weight% C; 0.035-0.050%, Si; 2.9-3.3%, P: 0.016% or less, dissolved Al: 0.011-0.017%, N: 0.0080-0.012%, S: 0.007%, hereinafter Ni and Cr alone or Composite: 0.06-0.18%, Mn: 0.32% or less Cu: 0.6% or less Remaining Fe and other unavoidable impurities Steel slab composed of 1250-1320 ° C is reheated at a temperature range of 1250-1320 ° C and then hot rolled without annealing. It is 0.60-0.75mm thick by primary cold rolling, then decarbonized annealing in a humidified hydrogen atmosphere of 820-870 ℃, then secondary cold rolling to the final thickness, followed by intermediate recovery annealing and MgO as the main component. In the method for producing a grain-oriented electrical steel sheet by applying the annealing separator after the final finishing annealing of 1150-1200 ℃ 10 hours or more, the intermediate recovery annealing temperature range 600-750 ℃ and PH20 / PH2 is 0.62-0.88 Excellent directionality in glass coating, characterized in that it is conducted for 45 seconds-2 minutes in a humid atmosphere. The manufacturing method of an electrical steel sheet is made into the summary.

Description

그라스 피막 특성이 우수한 방향성 전기강판의 제조방법Manufacturing method of oriented electrical steel sheet with excellent glass coating properties

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (1)

중량%로 C;0.035-0.050%, Si;2.9-3.3%, P:0.016% 이하, 용존 Al:0.011-0.017%, N:0.0080-0.012%, S:0.007%, 이하 Ni과 Cr의 단독 또는 복합:0.06-0.18%, Mn:0.32%이하 Cu:0.6%이하 잔부 Fe 및 기타 불가피한 불순물 조성되는 강스라브를 1250-1320℃의 온도구간에서 재가열하여 열간압연한후, 열연판 소둔을 행하지 않고 1차 냉간압연에 의해 0.60-0.75㎜ 두께로 한 다음 820-870℃의 습수소 분위기에서 탈탄소둔을 행한후 최종 두께로 2차 냉간압연을 행한 다음, 중간 회복 수둔을 행하고 MgO를 주성분으로 하는 소둔분리제를 도포한 후 1150-1200℃의 10시간 이상의 최종마무리 소둔을 행하여 방향성 전기강판을 제조하는방법에 있어서 상기 중간회복소둔이 600-750℃의 온도구간 및 PH20/PH2가 0.62-0.88인 습윤분위기하에서 45초-2분동안 행해지는 것을 특징으로 하는 그라스 피막 특성이 우수한 방향성 전기강판의 제조방법.By weight% C; 0.035-0.050%, Si; 2.9-3.3%, P: 0.016% or less, dissolved Al: 0.011-0.017%, N: 0.0080-0.012%, S: 0.007%, hereinafter Ni and Cr alone or Composite: 0.06-0.18%, Mn: 0.32% or less Cu: 0.6% or less Residual Fe and other unavoidable impurities Steel slab composed of 1250-1320 ° C is reheated and hot rolled, and then hot-rolled sheet annealing is performed. The thickness of 0.60-0.75 ㎜ by secondary cold rolling, followed by decarbonization annealing in a humid hydrogen atmosphere of 820-870 ℃, followed by secondary cold rolling to the final thickness, followed by an intermediate recovery annealing and annealing separation with MgO as the main component In the method for producing a grain-oriented electrical steel sheet by applying a final finish annealing of 1150-1200 ℃ 10 hours or more after applying the agent, the intermediate recovery annealing temperature range 600-750 ℃ and P H20 / P H2 is 0.62-0.88 Excellent directional film with glass coating, characterized in that it is conducted for 45 seconds-2 minutes in a humid atmosphere. The method of the steel sheet. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940021390A 1993-11-09 1994-08-29 Method for manufacturing oriented electrical steel sheet having excellent plating properties KR970007032B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1019940021390A KR970007032B1 (en) 1994-08-29 1994-08-29 Method for manufacturing oriented electrical steel sheet having excellent plating properties
JP51372794A JP2607869B2 (en) 1993-11-09 1994-11-09 Method for manufacturing grain-oriented electrical steel sheet by low-temperature slab heating
PCT/KR1994/000160 WO1995013401A1 (en) 1993-11-09 1994-11-09 Production method of directional electromagnetic steel sheet of low temperature slab heating system
US08/481,353 US5653821A (en) 1993-11-09 1994-11-09 Method for manufacturing oriented electrical steel sheet by heating slab at low temperature
EP95900316A EP0709470B1 (en) 1993-11-09 1994-11-09 Production method of directional electromagnetic steel sheet of low temperature slab heating system
DE1994628537 DE69428537T2 (en) 1993-11-09 1994-11-09 METHOD FOR PRODUCING STEEL SHEET WITH DIRECTIONAL MAGNETIZATION USING LOW SLAM HEATING TEMPERATURES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940021390A KR970007032B1 (en) 1994-08-29 1994-08-29 Method for manufacturing oriented electrical steel sheet having excellent plating properties

Publications (2)

Publication Number Publication Date
KR960007798A true KR960007798A (en) 1996-03-22
KR970007032B1 KR970007032B1 (en) 1997-05-02

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KR1019940021390A KR970007032B1 (en) 1993-11-09 1994-08-29 Method for manufacturing oriented electrical steel sheet having excellent plating properties

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