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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
Prior art date
Application number
KR1019950018312A
Other languages
Korean (ko)
Other versions
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)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet 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

Publications (2)

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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 Coil binding band steel with excellent ductility and manufacturing method
KR100544539B1 (en) * 2001-12-21 2006-01-24 주식회사 포스코 High strength high toughness coil binding band steel and manufacturing method

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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