KR960023138A - Oriented electrical steel sheet with excellent magnetic properties and manufacturing method thereof - Google Patents

Oriented electrical steel sheet with excellent magnetic properties and manufacturing method thereof Download PDF

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Publication number
KR960023138A
KR960023138A KR1019940034282A KR19940034282A KR960023138A KR 960023138 A KR960023138 A KR 960023138A KR 1019940034282 A KR1019940034282 A KR 1019940034282A KR 19940034282 A KR19940034282 A KR 19940034282A KR 960023138 A KR960023138 A KR 960023138A
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South Korea
Prior art keywords
annealing
magnetic properties
excellent magnetic
steel sheet
electrical steel
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KR1019940034282A
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Korean (ko)
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KR970007334B1 (en
Inventor
이청산
우종수
최규승
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김만제
포항종합제철 주식회사
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Priority to KR1019940034282A priority Critical patent/KR970007334B1/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
    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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

Abstract

본 발명은 규소강 스라브의 성분을 조정하고, 일반 탄소강과 작업간섭이 일어나지 않게 되는 1250∼1320℃의 온도로 스라브를 가열하며, 후속되는 최종 고온소둔 공정에서 수소 및 질소의 혼합분위기는 물론 순수소 분위기의 열처리를 하므로서 기존공정에서 설비신설이나 보완이 없이도 안정적이며, 우수한 자기적 특성을 얻을 수 있는 방향성 전기강판을 제조하는 방법을 제공하는데 그 목적이 있다.The present invention adjusts the components of the silicon steel slab, heats the slab to a temperature of 1250-1320 ° C. where no work interference occurs with ordinary carbon steel, and in the subsequent final high temperature annealing process, the mixed atmosphere of hydrogen and nitrogen as well as pure hydrogen It is an object of the present invention to provide a method for manufacturing a grain-oriented electrical steel sheet that is stable and can obtain excellent magnetic properties without the establishment or supplementation of equipment in the existing process by heat treatment of the atmosphere.

본 발명은 중량%로, C : 0.040∼0.08%, Si : 2.90∼3.30%, Mn : 0.05∼0.25%, S≤0.006%, 산가용성 Al : 0.010∼0.018%, N : 0.004∼0.008%, 0.05%≤Sn+P≤0.15% 및 1≤Sn/p≤2의 조건을 만족하는 Sn 및 P, 잔부 Fe로 되는 자기적 특성이 우수한 방향성 전기강판 및 이와같이 조성되는 규소강 스라브를 1250∼1320℃의 온도에서 가열한 후, 통상방법으로 열간압연, 석출소둔, 급냉, 산세, 냉간압연, 탈탄소둔 및 소둔분리제를 도포한 다음, 순수소 가스분위기로 최종 고온소둔 처리하여 자기적 특성이 우수한 방향성 전기강판을 제조하는 방법을 제공함을 그 요지로 한다.The present invention is in weight%, C: 0.040 to 0.08%, Si: 2.90 to 3.30%, Mn: 0.05 to 0.25%, S≤0.006%, acid soluble Al: 0.010 to 0.018%, N: 0.004 to 0.008%, 0.05 A grain-oriented electrical steel sheet having excellent magnetic properties such as Sn and P satisfying the conditions of% ≤Sn + P≤0.15% and 1≤Sn / p≤2 and the balance Fe, and the silicon steel slab formed in this way were 1250 to 1320 占 폚. After heating at a temperature, hot rolling, precipitation annealing, quenching, pickling, cold rolling, decarbon annealing, and annealing separators are applied in a conventional manner, followed by final high temperature annealing with a pure oxygen gas atmosphere to provide excellent magnetic properties. The gist of the present invention is to provide a method for producing a steel sheet.

Description

자기적 특성이 우수한 방향성 전기강판 및 그 제조방법Oriented electrical steel sheet with excellent magnetic properties and manufacturing method thereof

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

제1도는 본 발명의 Sn 및 P의 첨가량과 자속밀도, B10간의 관계를 나타내는 그래프,1 is a graph showing the relationship between the amount of Sn and P added and the magnetic flux density, B 10 of the present invention,

제2도는 본 발명의 고온 소둔 승온중 혼합개스의 비율과 자기적 특성 및 2차 재결정 입도간의 관계를 나타내는 그래프.2 is a graph showing the relationship between the ratio of the mixed gas during the high temperature annealing temperature increase of the present invention and the magnetic properties and the secondary recrystallization grain size.

Claims (3)

중량%로, C : 0.040∼0.08%, Si : 2.90∼3.30%, Mn : 0.05∼0.25%, S≤0.006%, 이하, 산가용성 Al : 0.010∼0.018%, N : 0.004∼0.008%, 0.05%≤Sn+P≤0.15% 및 1≤Sn/p≤2의 조건을 만족하는 Sn 및 P, 나머지 Fe로 조성됨을 특징으로 하는 자기적 특성이 우수한 방향성 전기강.By weight%, C: 0.040 to 0.08%, Si: 2.90 to 3.30%, Mn: 0.05 to 0.25%, S≤0.006%, or less, acid-soluble Al: 0.010 to 0.018%, N: 0.004 to 0.008%, 0.05% A directional electrical steel with excellent magnetic properties, characterized in that it is composed of Sn and P satisfying the conditions of ≤ Sn + P ≤ 0.15% and 1 ≤ Sn / p ≤ 2, the remaining Fe. 중량%로, C : 0.040∼0.08%, Si : 2.90∼3.30%, Mn : 0.05∼0.25%, S≤0.006%, 산가용성 Al : 0.010∼0.018%, N : 0.004∼0.008%, 0.05%≤Sn+P≤0.15% 및 1≤Sn/p≤2의 조건을 만족하는 Sn 및 P, 잔부 Fe로 조성된 규소강 스라브를 1250∼1320℃의 온도에서 가열한 후, 통상방법으로 열간압연, 석출소둔, 급냉, 산세, 냉간압연, 탈탄소둔 및 소둔분리제를 도포한 다음, 순수소 가스분위기로 최종 고온소둔하는 것을 특징으로 하는 자기적 특성이 우수한 방향성 전기강판의 제조방법.By weight%, C: 0.040 to 0.08%, Si: 2.90 to 3.30%, Mn: 0.05 to 0.25%, S≤0.006%, acid soluble Al: 0.010 to 0.018%, N: 0.004 to 0.008%, 0.05% ≤Sn The silicon steel slab composed of Sn and P and the balance Fe satisfying the conditions of + P≤0.15% and 1≤Sn / p≤2 was heated at a temperature of 1250 to 1320 ° C, followed by hot rolling and precipitation annealing in a conventional manner. After applying a quenching, pickling, cold rolling, decarbon annealing and annealing separator, the final high temperature annealing with pure oxygen gas atmosphere, characterized in that the manufacturing method of a grain-oriented electrical steel with excellent magnetic properties. 제2항에 있어서, 열간압연된 판의 두께는 2.0∼2.3mm이고, 석출소둔은 950∼1200℃온도범위에서 30초∼30분간 행해지며, 냉간압연시 최종 냉간압하율은 60∼90% 범위이고, 탈탄소둔은 800∼900℃온도범위의 습윤수소 또는 습윤질소 및 수소 혼합가스 분위기에서 30초∼10분간 행해지며, 소둔분리제는 MgO, TiO2및 Na2B4O중에서 선택된 1종을 사용하며, 최종고온소둔은 1200℃에서 5시간 행해짐을 특징으로 하는 자기적 특성이 우수한 방향성 전기강판의 제조방법.The thickness of the hot rolled plate is 2.0 to 2.3mm, the precipitation annealing is carried out for 30 seconds to 30 minutes at a temperature range of 950 ~ 1200 ℃, the final cold reduction rate during cold rolling range of 60 to 90% Decarbonization annealing is carried out in a wet hydrogen or wet nitrogen and hydrogen mixed gas atmosphere of 800 ~ 900 ℃ temperature range for 30 seconds to 10 minutes, the annealing separator is selected from MgO, TiO 2 and Na 2 B 4 O And a high temperature annealing is performed at 1200 ° C. for 5 hours. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034282A 1994-12-14 1994-12-14 Method for manufacturing oriented electrical steel sheet having magnetic properties KR970007334B1 (en)

Priority Applications (1)

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KR960023138A true KR960023138A (en) 1996-07-18
KR970007334B1 KR970007334B1 (en) 1997-05-07

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CN103534366B (en) * 2011-12-19 2015-03-25 Posco公司 Grain-oriented electrical steel sheet having low core loss and high magnetic flux density, and method for manufacturing same
CN103630338B (en) * 2012-08-28 2016-08-03 哈尔滨飞机工业集团有限责任公司 The ground experiment structure of pressure refuelling system

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