KR970001579A - Coil binding steel with excellent ductility and its manufacturing method - Google Patents

Coil binding steel with excellent ductility and its manufacturing method Download PDF

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Publication number
KR970001579A
KR970001579A KR1019950018312A KR19950018312A KR970001579A KR 970001579 A KR970001579 A KR 970001579A KR 1019950018312 A KR1019950018312 A KR 1019950018312A KR 19950018312 A KR19950018312 A KR 19950018312A KR 970001579 A KR970001579 A KR 970001579A
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KR
South Korea
Prior art keywords
temperature range
less
manufacturing
excellent ductility
binding steel
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Application number
KR1019950018312A
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Korean (ko)
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KR0143478B1 (en
Inventor
김흥섭
정우창
동계수
Original Assignee
김종진
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
권오훈
삼정강업 주식회사
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Application filed by 김종진, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소, 권오훈, 삼정강업 주식회사 filed Critical 김종진
Priority to KR1019950018312A priority Critical patent/KR0143478B1/en
Publication of KR970001579A publication Critical patent/KR970001579A/en
Application granted granted Critical
Publication of KR0143478B1 publication Critical patent/KR0143478B1/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
    • C21D8/02—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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

본 발명은 열연 및 냉연선재의 결속용으로 사용되는 코일결속용 대강 및 그제조방법에 관한 것으로, 강의 성분 및 그 함량을 적절히 조정하고 제조공정중 회복소둔공정을 추가하므로서, 인장강도 85㎏f/㎟ 이상, 연신율 10.0％ 이상의 연성이 우수한 철강코일 제품의 결속용 대강을 제조하는 방법을 제조하고자 하는데, 그 목적이 있다.The present invention relates to a coil binding steel and a method for manufacturing the same, which are used for binding hot-rolled and cold-rolled wires, and having a tensile strength of 85 kgf / An object of the present invention is to manufacture a method for manufacturing a steel sheet for binding steel products having excellent ductility of at least 2 mm 2 and an elongation of at least 10.0%.

상기한 목적을 달성하기 의한 본 발명은 중량％로 C:0.07∼0.13％, Mn:1.0∼The present invention by achieving the above object is in the weight% C: 0.07 to 0.13%, Mn: 1.0 to

2.0％, Si:0.3∼0.8％, P:0.02％ 이하, S:0.02％ 이하, 가용성 Al:0.02∼0.08％, N:0.006％ 이하, Ti:0.03∼0.10％ 나머지: Fe 및 불가피하게 함유되는 불순물로 조성되는 슬라브를 1200∼1250℃의 온도범위에서 균질화 처리한 후 Ar3온도 이상인 900∼950℃의 온도범위에서의 마무리 열간압연하고, 500∼700℃의 온도범위에서 권취한 다음 45∼65％의 압하율로 최종두께까지 냉간압연하여, 480∼560℃의 온도범위로 유지되는 상소둔로에서 회복소둔 한후 430∼470℃의 온도범위에서 볼루잉 하여 연성이 우수한 코일결속용 대강을 제조하는 방법을 제공함을 그 요지로 한다.2.0%, Si: 0.3 to 0.8%, P: 0.02% or less, S: 0.02% or less, soluble Al: 0.02 to 0.08%, N: 0.006% or less, Ti: 0.03 to 0.10% remainder: Fe and inevitably contained The slab composed of impurities is homogenized at a temperature range of 1200 to 1250 ° C, followed by finishing hot rolling at a temperature range of 900 to 950 ° C that is more than an Ar 3 temperature, and then wound at a temperature range of 500 to 700 ° C, and then 45 to 65 ° C. Cold rolling to the final thickness at a% reduction rate, recovery annealing in an annealing furnace maintained at a temperature range of 480 to 560 ° C., and then boiling at a temperature range of 430 to 470 ° C. to produce a coil binding steel having excellent ductility. The idea is to provide a method.

Description

연성이 우수한 코일 결속용 대강 및 그 제조방법Coil binding steel with excellent ductility and its manufacturing method

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

제1도는 본 발명에 따른 발명강과 비교강을 블루잉 처리한 후 인장시험하여 얻은 인장강도-연신율을 비교한 그래프.1 is a graph comparing the tensile strength-elongation obtained by tensile testing after bluing the inventive steel and the comparative steel according to the present invention.

Claims (2)

중량％로 C:0.07∼0.13％, Mn:1.0∼2.0％, Si:0.3∼0.8％, P:0.020％ 이하, S:0.02％ 이하, 가용성 Al:0.02∼0.08％, N:0.006％ 이하, Ti:0.03∼0.10％ 나머지: Fe 및 불가피하게 함유되는 불순물로 조성됨을 특징으로 하는 연성이 우수한 코일 결속용 대강.C: 0.07 to 0.13%, Mn: 1.0 to 2.0%, Si: 0.3 to 0.8%, P: 0.020% or less, S: 0.02% or less, Soluble Al: 0.02 to 0.08%, N: 0.006% or less, Ti: 0.03% to 0.10% Remainder: A coil roughness having excellent ductility, characterized by being composed of Fe and inevitable impurities. 제1항과 같이 조성되는 슬라브를 1200∼1250℃의 온도범위에서 균질화 처리한후 Ar3온도 이상인 900∼950℃의 온도범위에서의 마무리 열간압연하고, 500∼700℃의 온도범위에서 권취한 다음 45∼65％의 압하율로 최종두께까지 냉간압연하여, 480∼560℃의 온도범위로 유지되는 상소둔로에서 회복소둔 한후, 430∼470℃의 온도범위에서 볼루잉 하여 이루어짐을 특징으로 하는 연성이 우수한 코일 결속용 대강의 제조방법.The slab formed as described in claim 1 is homogenized at a temperature range of 1200 to 1250 ° C., followed by finishing hot rolling at a temperature range of 900 to 950 ° C. above Ar 3 temperature, and then wound at a temperature range of 500 to 700 ° C. Ductile cold rolling to a final thickness at a reduction ratio of 45 to 65%, recovery annealing in an annealing furnace maintained at a temperature range of 480 to 560 ° C., and voiling at a temperature range of 430 to 470 ° C. This excellent coil binding method for manufacturing a rough steel. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950018312A 1995-06-29 1995-06-29 The making method of coil strip with ductile KR0143478B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950018312A KR0143478B1 (en) 1995-06-29 1995-06-29 The making method of coil strip with ductile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950018312A KR0143478B1 (en) 1995-06-29 1995-06-29 The making method of coil strip with ductile

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KR970001579A true KR970001579A (en) 1997-01-24
KR0143478B1 KR0143478B1 (en) 1998-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100244630B1 (en) * 1995-09-25 2000-03-02 이구택 The manufacturing method for steel strip and same product with coil unity

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431609B1 (en) * 1999-12-21 2004-05-17 주식회사 포스코 Manufacturing of high toughness steel band for coil banding
KR100544540B1 (en) * 2001-12-21 2006-01-24 주식회사 포스코 High Strength Cold-Rolled Steel Sheet with Good Elongation for Coil Packaging Band And A Method for Manufacturing Thereof
KR100544539B1 (en) * 2001-12-21 2006-01-24 주식회사 포스코 High Strength Cold-Rolled Steel Sheet with Good Toughness for Coil Packaging Band and A Method for Manufacturing Thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100244630B1 (en) * 1995-09-25 2000-03-02 이구택 The manufacturing method for steel strip and same product with coil unity

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