KR970043182A - Method for manufacturing oriented electrical steel sheet by one cold rolling - Google Patents

Method for manufacturing oriented electrical steel sheet by one cold rolling Download PDF

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Publication number
KR970043182A
KR970043182A KR1019950055799A KR19950055799A KR970043182A KR 970043182 A KR970043182 A KR 970043182A KR 1019950055799 A KR1019950055799 A KR 1019950055799A KR 19950055799 A KR19950055799 A KR 19950055799A KR 970043182 A KR970043182 A KR 970043182A
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South Korea
Prior art keywords
oriented electrical
steel sheet
electrical steel
grain
minutes
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KR1019950055799A
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Korean (ko)
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KR100241005B1 (en
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홍병득
우종수
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김종진
포항종합제철 주식회사
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Publication of KR100241005B1 publication Critical patent/KR100241005B1/en

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Abstract

본 발명은 변압기 등과 같은 정지기기의 철심으로 사용되는 방향성 전기강판의 제조방법에 관한 것으로, 방향성 전기강판의 제조시 열연판을 최종두께로 1회 냉간압연한 다음 1차재결정 소둔시 그 조건을 적절히 제어하므로서, 기존의 두께 0.35mm 이하의 방향성 전기강판대비 동등이상의 자기적 특성을 갖는 방향성 전기강판의 제조방법을 제공하고자 하는데 그 목적이 있다.The present invention relates to a method for manufacturing a grain-oriented electrical steel sheet used as an iron core of a stationary device such as a transformer, and the like, in the manufacture of grain-oriented electrical steel sheet, the hot rolled sheet is cold rolled to the final thickness once, and then the conditions of the first recrystallization annealing are properly applied. By controlling, it is an object of the present invention to provide a method for producing a grain-oriented electrical steel sheet having a magnetic property equal to or greater than that of a conventional grain-oriented electrical steel sheet of 0.35 mm or less.

상기한 목적을 달성하기 위한 본 발명은 무게비로, Si: 2.95 ~ 3.1%, Mn: 0.06 ~ 0.08%, S: 0.022 ~ 0.026%, C: 0.01 ~ 0.05%, 나머지: Fe 및 불가피하게 첨가되는 원소로 이루어지는 강을 연주, 열간압연을 거쳐 열연판으로 만든 다음, 산세하여 냉간압연하고 탈탄을 겸한 1차재결정소둔을 하고, 고온소둔을 한다음 절연코팅하여 방향성 전기강판을 제조하는 방법에 있어서, 상기 1차 재결정소둔은 냉연판을 500~650℃의 온도범위에서 1-10분간 유지한 후 승온하여 800-850℃의 온도범위에서 1-10분간 습한 분위기에서 탈탄소둔하고, 이어 870-950℃의 온도범위에서 1-10분 유지한 후 냉각하는 것인 1회 냉간압연에 의한 방향성 전기강판의 제조방법에 관한 것을 그 요지로 한다.The present invention for achieving the above object by weight ratio, Si: 2.95 ~ 3.1%, Mn: 0.06 ~ 0.08%, S: 0.022 ~ 0.026%, C: 0.01 ~ 0.05%, the remainder: Fe and inevitably added elements In the method of producing a grain-oriented electrical steel sheet by playing a steel consisting of a hot rolled sheet through hot rolling, followed by pickling, cold rolling, decarburization and primary recrystallization annealing, followed by high temperature annealing. The primary recrystallization annealing is carried out by maintaining the cold rolled sheet in the temperature range of 500 ~ 650 ℃ for 1-10 minutes, and then the temperature is elevated, decarbonized annealing in a humid atmosphere for 1-10 minutes in the temperature range of 800-850 ℃, followed by 870-950 ℃ The gist of the present invention relates to a method for manufacturing a grain-oriented electrical steel sheet by one cold rolling, which is cooled after maintaining for 1 to 10 minutes in a temperature range.

Description

1회 냉간압연에 의한 방향성 전기강판의 제조방법Method for manufacturing oriented electrical steel sheet by one cold rolling

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

제1도는 본 발명의 범위를 만족하는 발명재 및 이를 만족하지 못하는 비교재의 1차 재결정 소둔후 자속밀도 및 2차 재결정된 결정립의 조직 사진.1 is a texture photograph of the magnetic flux density and the secondary recrystallized grain after the first recrystallization annealing of the invention material and the comparative material that do not satisfy the scope of the present invention.

Claims (1)

무게비로, Si: 2.95 ~ 3.1%, Mn: 0.06 ~ 0.08%, S: 0.022 ~ 0.026%, C: 0.01 ~ 0.05%, 나머지: Fe 및 불가피하게첨가되는 원소로 이루어지는 강을 연주, 열간압연을 거쳐 열연판을 만든 다음, 산세하여 냉간압연하고 탈탄을 겸한 1차재결정소둔을 하고, 고온소둔을 한다음 절연코팅하여 방향성 전기강판을 제조하는 방법에 있어서, 상기 1차 재결정소둔은 냉연판을 500~650℃의 온도범위에서 1-10분간 유지한 후 승온하여 800-850℃의 온도범위에서 1-10분간 습한 분위기에서 탈탄소둔하고, 이어 870-950℃의 온도범위에서 1-10분 유지한 후 냉각하는 것임을 특징으로 하는 1회 냉간압연에 의한 방향성 전기강판의 제조방법.By weight ratio, Si: 2.95 ~ 3.1%, Mn: 0.06 ~ 0.08%, S: 0.022 ~ 0.026%, C: 0.01 ~ 0.05%, remainder: Fe and inevitably added steel, hot rolled In the method of making a hot rolled sheet, followed by pickling, cold rolling, primary recrystallization annealing for decarburization, high temperature annealing, and insulation coating to produce a grain-oriented electrical steel sheet. After maintaining for 1-10 minutes in the temperature range of 650 ℃ and decarbonized in a humid atmosphere for 1-10 minutes in the temperature range of 800-850 ℃, and then maintained for 1-10 minutes in the temperature range of 870-950 ℃ Method for producing a grain-oriented electrical steel sheet by one cold rolling, characterized in that for cooling.
KR1019950055799A 1995-12-23 1995-12-23 The manufacturing method of oriented electric steel sheet with only one cold rolling processed KR100241005B1 (en)

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KR1019950055799A KR100241005B1 (en) 1995-12-23 1995-12-23 The manufacturing method of oriented electric steel sheet with only one cold rolling processed

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KR1019950055799A KR100241005B1 (en) 1995-12-23 1995-12-23 The manufacturing method of oriented electric steel sheet with only one cold rolling processed

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KR970043182A true KR970043182A (en) 1997-07-26
KR100241005B1 KR100241005B1 (en) 2000-03-02

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RU2597464C2 (en) * 2012-07-26 2016-09-10 ДжФЕ СТИЛ КОРПОРЕЙШН Method for making sheets of textured electrical steel
KR101594598B1 (en) * 2013-12-23 2016-02-16 주식회사 포스코 Method for manufacturing the oriented electrical steel sheet

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KR950008692B1 (en) * 1993-08-25 1995-08-04 포항종합제철주식회사 Process for production of oriented electrical steel sheet having excellent magnetic properties

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