[go: up one dir, main page]

KR960037851A - Hot-annealed cold rolled steel sheet excellent in formability and hardening hardening and its manufacturing method - Google Patents

Hot-annealed cold rolled steel sheet excellent in formability and hardening hardening and its manufacturing method Download PDF

Info

Publication number
KR960037851A
KR960037851A KR1019950009670A KR19950009670A KR960037851A KR 960037851 A KR960037851 A KR 960037851A KR 1019950009670 A KR1019950009670 A KR 1019950009670A KR 19950009670 A KR19950009670 A KR 19950009670A KR 960037851 A KR960037851 A KR 960037851A
Authority
KR
South Korea
Prior art keywords
hardening
formability
rolled
manufacturing
rolled steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
KR1019950009670A
Other languages
Korean (ko)
Other versions
KR0143469B1 (en
Inventor
한성호
김흥섭
정우창
최병섭
Original Assignee
김만제
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김만제, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소 filed Critical 김만제
Priority to KR1019950009670A priority Critical patent/KR0143469B1/en
Publication of KR960037851A publication Critical patent/KR960037851A/en
Application granted granted Critical
Publication of KR0143469B1 publication Critical patent/KR0143469B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C22C38/04—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

Landscapes

  • 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)

Abstract

본 발명은 자동차의 내외판재등에 사용되는 성형성 및 소부경화성이 우수한 상소둔형 냉연강판 및 그 제조방법에 관한 것으로 P 첨가 저탄소강 Al-킬드강의 합금성분 및 그 함량을 조절하고, 제조조건을 제어하여 기존의 상소둔재와는 다른 동축립의 미세조직을 형성시키므로서 성형성이 우수하며, 4.0㎏f/㎟ 이상의 소부경화량을 가진 인장강도 30∼35㎏f/㎟ 급의 냉연강판 그 제조방법을 제공하고자 하는데 그 목적이 있다.The present invention relates to an annealing cold rolled steel sheet having excellent formability and hardening hardening property used in interior and exterior sheet materials of automobiles, and a method of manufacturing the same. The alloy composition and content of P-added low carbon steel Al-kilted steel are controlled and manufacturing conditions are controlled. It is excellent in formability by forming microstructures of coaxial grains different from those of conventional annealing materials, and has a method of manufacturing cold rolled steel sheets having a tensile strength of 30 to 35 kgf / mm2 with a hardening hardness of 4.0 kgf / mm2 or more. The purpose is to provide.

상기한 목적을 달성하기 위한 본 발명은 중량％로, C : 0.005∼0.025％, Mn : 0.1∼0.4％, P : 0.04∼0.09％, S : 0.013％ 이하, Sol.Al : 0.02∼0.08％, N : 0.0012％ 이하, 나머지 Fe 및 기타 불가피한 불순물로 조성되고, 그 조직이 등축정인 성형성 및 소부경화성이 우수한 상소둔형 냉연강판 및 상기와 같이 조성되는 강을 1200℃이상의 온도에서 균질화 열처리하고 900∼950℃이 온도범위에서 마무리 열간압연한 후, 600℃ 이하의 온도범위에서 권취하고 냉간압연한 다음, 650∼740℃의 온도범위에서 상소둔하고 조질압연하여 성형성 및 소부경화성이 우수한 상소둔형 냉연강판의 제조방법을 제공함을 그 요지로 한다.The present invention for achieving the above object is by weight%, C: 0.005 to 0.025%, Mn: 0.1 to 0.4%, P: 0.04 to 0.09%, S: 0.013% or less, Sol.Al: 0.02 to 0.08%, N: 0.0012% or less, the remaining annealing-type cold-rolled steel sheet composed of the remaining Fe and other unavoidable impurities, and excellent in formability and hardening hardenability, whose structure is equiaxed, and the steel formed as described above, after homogenizing heat treatment at a temperature of 1200 ° C or higher, After hot-rolled at 950 ° C in the temperature range, it is wound up and cold-rolled at a temperature in the range of 600 ° C or less, and then annealed and temper-rolled in the temperature range of 650-740 ° C. Its main purpose is to provide a method for producing the same.

Description

성형성 및 소부경화성이 우수한 상소둔형 냉연강판 및 그 제조방법Hot-annealed cold rolled steel sheet excellent in formability and hardening hardening and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 범위를 만족하는 발명예 및 본 발명의 범위를 벗어나는 비교예의 미세조직 사진.Figure 1 is a microstructure photograph of the invention examples satisfying the scope of the present invention and comparative examples outside the scope of the present invention.

Claims (2)

중량％로, C : 0.005∼0.025％, Mn : 0.1∼0.4％, P : 0.04∼0.09％, S : 0.013％ 이하, Sol.Al : 0.02∼0.08％, N : 0.0012％ 이하, 나머지 Fe 및 기타 불가피한 불순물로 조성되고, 그 조직이 등축정인 것을 특징으로 하는 성형성 및 소부경화성이 우수한 상소둔형 냉연강판.By weight%, C: 0.005 to 0.025%, Mn: 0.1 to 0.4%, P: 0.04 to 0.09%, S: 0.013% or less, Sol.Al: 0.02 to 0.08%, N: 0.0012% or less, remaining Fe and others An annealing cold rolled steel sheet excellent in formability and hardening hardenability, which is composed of unavoidable impurities and whose structure is equiaxed crystal. 중량％로, C : 0.005∼0.025％, Mn : 0.1∼0.4％, P : 0.04∼0.09％, S : 0.013％, Sol.Al : 0.02∼0.08％, N : 0.0012％ 이하, 나머지 Fe 및 기타 불가피한 불순물로 조성되는 강을 1200℃이상의 온도에서 균질화 열처리하고 900∼950℃이 온도범위에서 마무리 열간압연한 후, 600℃ 이하의 온도범위에서 권취하고 냉간압연한 다음, 650∼740℃의 온도범위에서 상소둔하고 조질압연하는 것을 포함하여 이루어짐을 특징으로 하는 성형성 및 소부경화성이 우수한 상소둔형 냉연강판의 제조방법.By weight%, C: 0.005-0.025%, Mn: 0.1-0.4%, P: 0.04-0.09%, S: 0.013%, Sol.Al: 0.02-0.08%, N: 0.0012% or less, remaining Fe and other unavoidable Homogenized heat-treated steel at impurity temperature of 1200 ℃ or higher and finishing hot rolling at 900 ~ 950 ℃ in the temperature range, then wound and cold-rolled in the temperature range of 600 ℃ or lower, and then in the temperature range of 650 ~ 740 ℃ Process for producing an annealing-type cold rolled steel sheet excellent in formability and baking hardening, characterized in that it comprises annealing and temper rolling. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950009670A 1995-04-24 1995-04-24 Method for manufacturing hot-annealed cold rolled steel sheet with excellent formability and hardening hardening Expired - Fee Related KR0143469B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950009670A KR0143469B1 (en) 1995-04-24 1995-04-24 Method for manufacturing hot-annealed cold rolled steel sheet with excellent formability and hardening hardening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950009670A KR0143469B1 (en) 1995-04-24 1995-04-24 Method for manufacturing hot-annealed cold rolled steel sheet with excellent formability and hardening hardening

Publications (2)

Publication Number Publication Date
KR960037851A true KR960037851A (en) 1996-11-19
KR0143469B1 KR0143469B1 (en) 1998-08-17

Family

ID=19412829

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950009670A Expired - Fee Related KR0143469B1 (en) 1995-04-24 1995-04-24 Method for manufacturing hot-annealed cold rolled steel sheet with excellent formability and hardening hardening

Country Status (1)

Country Link
KR (1) KR0143469B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100759197B1 (en) * 2006-06-30 2007-09-14 현대하이스코 주식회사 Heat Treatment Method Using Box Annealing Furnace for Cold Rolled Steel Sheets

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100514788B1 (en) * 2000-12-05 2005-09-14 주식회사 포스코 A method for manufacturing cold rolled steel sheets having superior surface quality
KR100920598B1 (en) * 2006-08-25 2009-10-08 주식회사 포스코 Bake-Hardenable Cold Rolled Steel Sheet with Superior Strength, Galvannealed Steel Sheet Using the Cold Rolled Steel Sheet and Method for Manufacturing the Cold Rolled Steel Sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100759197B1 (en) * 2006-06-30 2007-09-14 현대하이스코 주식회사 Heat Treatment Method Using Box Annealing Furnace for Cold Rolled Steel Sheets

Also Published As

Publication number Publication date
KR0143469B1 (en) 1998-08-17

Similar Documents

Publication Publication Date Title
CA2414138C (en) Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel
KR940702231A (en) COLD ROLLED STEEL SHEET AND HOT DIP AINC-COATED COLD ROLLED STEEL SHEET HAVING EXCELLENT BAKE HARDENABILITY, NON-AGING PROPERTIES AND FORMABILITY, AND PROCESS FOR PRODUCING SAME)
CN103080357A (en) High-strength cold-rolled steel sheet having excellent stretch flange properties, and process for production thereof
JPS61217529A (en) Method for manufacturing high-strength steel plate with excellent ductility
KR930017636A (en) Manufacturing method of steel plate for high strength can
CN111218620A (en) High-yield-ratio cold-rolled dual-phase steel and manufacturing method thereof
JP7239685B2 (en) Hot-rolled steel sheet with high hole expansion ratio and method for producing the same
JPS62182225A (en) Production of high-strength steel sheet having good ductility
JP4457681B2 (en) High workability ultra-high strength cold-rolled steel sheet and manufacturing method thereof
JP2000144258A (en) Method for producing Ti-containing ferritic stainless steel sheet with excellent ridging resistance
JPH0759726B2 (en) Method for manufacturing high strength cold rolled steel sheet with excellent local ductility
KR950016903A (en) Manufacturing method of high strength can steel sheet with low anisotropy
CN113215484A (en) Phase-change induced plasticity steel and preparation method and application thereof
KR960037851A (en) Hot-annealed cold rolled steel sheet excellent in formability and hardening hardening and its manufacturing method
KR960021198A (en) Manufacturing method of cold rolled steel sheet with excellent formability and hardening hardening
JP2793284B2 (en) Manufacturing method of ultra-high strength cold rolled steel sheet with excellent bake hardenability
KR20190049294A (en) Ultra high strength steel sheet having good cold workability and its manufacturing method
KR970001579A (en) Coil binding steel with excellent ductility and its manufacturing method
JP3043901B2 (en) Method for producing high-strength cold-rolled steel sheet and galvanized steel sheet with excellent deep drawability
JPS6052551A (en) Steel having high ductility and high workability and its production
JPH01191739A (en) Production of hot rolled steel sheet having excellent workability, baking hardenability and room temperature delayed aging property
JPH0774412B2 (en) High-strength thin steel sheet excellent in workability and resistance to placement cracking and method for producing the same
JP2004232018A (en) Manufacturing method of composite structure type high tensile cold rolled steel sheet with excellent deep drawability
JPH10147816A (en) Method for producing high-carbon hot-rolled steel sheet and high-carbon cold-rolled steel sheet excellent in formability
JP2003013176A (en) High ductility cold rolled steel sheet excellent in press formability and strain age hardening characteristics and method for producing the same

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19950424

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19950424

Comment text: Request for Examination of Application

PG1501 Laying open of application
E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 19971226

Patent event code: PE09021S01D

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 19980312

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 19980409

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 19980409

End annual number: 3

Start annual number: 1

PG1601 Publication of registration
PR1001 Payment of annual fee

Payment date: 20010327

Start annual number: 4

End annual number: 4

PR1001 Payment of annual fee

Payment date: 20020410

Start annual number: 5

End annual number: 5

PR1001 Payment of annual fee

Payment date: 20030327

Start annual number: 6

End annual number: 6

PR1001 Payment of annual fee

Payment date: 20040401

Start annual number: 7

End annual number: 7

PR1001 Payment of annual fee

Payment date: 20050404

Start annual number: 8

End annual number: 8

PR1001 Payment of annual fee

Payment date: 20060404

Start annual number: 9

End annual number: 9

PR1001 Payment of annual fee

Payment date: 20070405

Start annual number: 10

End annual number: 10

PR1001 Payment of annual fee

Payment date: 20080410

Start annual number: 11

End annual number: 11

PR1001 Payment of annual fee

Payment date: 20090410

Start annual number: 12

End annual number: 12

PR1001 Payment of annual fee

Payment date: 20100412

Start annual number: 13

End annual number: 13

PR1001 Payment of annual fee

Payment date: 20110411

Start annual number: 14

End annual number: 14

FPAY Annual fee payment

Payment date: 20120403

Year of fee payment: 15

PR1001 Payment of annual fee

Payment date: 20120403

Start annual number: 15

End annual number: 15

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

Termination category: Default of registration fee

Termination date: 20140309