KR930013187A - Manufacturing method of aging cold rolled steel sheet with excellent ductility - Google Patents

Manufacturing method of aging cold rolled steel sheet with excellent ductility Download PDF

Info

Publication number
KR930013187A
KR930013187A KR1019910022215A KR910022215A KR930013187A KR 930013187 A KR930013187 A KR 930013187A KR 1019910022215 A KR1019910022215 A KR 1019910022215A KR 910022215 A KR910022215 A KR 910022215A KR 930013187 A KR930013187 A KR 930013187A
Authority
KR
South Korea
Prior art keywords
steel sheet
cold rolled
rolled steel
aging
manufacturing
Prior art date
Application number
KR1019910022215A
Other languages
Korean (ko)
Other versions
KR940007274B1 (en
Inventor
윤정봉
Original Assignee
정명식
포항종합제철 주식회사
백덕현
재단법인산업과학기술 연구소
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 정명식, 포항종합제철 주식회사, 백덕현, 재단법인산업과학기술 연구소 filed Critical 정명식
Priority to KR1019910022215A priority Critical patent/KR940007274B1/en
Publication of KR930013187A publication Critical patent/KR930013187A/en
Application granted granted Critical
Publication of KR940007274B1 publication Critical patent/KR940007274B1/en

Links

Classifications

    • 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

Landscapes

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

Abstract

본 발명은 자동차의 내.외판등에 사용되는 냉간압연 강판을 제조하는 방법에 관한 것으로서, 55% 이상의 높은 연신율을 갖고, 성형성, 형상동결성, 및 비시효특성이 우수한 냉간압연강판을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method for manufacturing a cold rolled steel sheet used in the interior and exterior of automobiles, and to provide a cold rolled steel sheet having a high elongation of 55% or more and excellent formability, shape freezing, and non-aging characteristics. , Its purpose is.

본 발명은 저탄소강을 소재로하여 연성이 우수한 비시효성, 냉간압연강판을 상소둔에 의해 제조하는 방법에 있어서, 중량%로, C:0.01-0.03%, Mn:0.05-0.3%, B:15-45ppm, N:70ppm이하, 잔부 Fe및 불가피하게 함유된 불순물로 조성되고 ; 보론(B)/질소(N) 원자비가 0.8-2.0인 저탄소 알루미늄 킬드강을 통상의 방법으로 열간압연 및 냉간압연하여 630-680℃범위의 온도에서 1시간 이상 상소둔하여 연성이 우수한 비시효성 냉간압연강판을 제조하는 방법에 관한 것이다.The present invention is a method for producing a non-aging, cold rolled steel sheet having excellent ductility by using annealing, based on low carbon steel, in weight%, C: 0.01-0.03%, Mn: 0.05-0.3%, B: 15 -45 ppm, N: 70 ppm or less, remainder Fe and inevitably contained impurities; Low-carbon aluminum-kilted steel with boron (B) / nitrogen (N) atomic ratio of 0.8-2.0 is hot rolled and cold rolled in a conventional manner, and is annealed for at least 1 hour at a temperature in the range of 630-680 ° C. It relates to a method for producing a rolled steel sheet.

본 발명은 연신율이 55%이상인 고연서을 가질뿐만 아니라 성형성 및 형상동결성이 우수하며 비시효특성을 갖는 냉간압연강판을 제공하므로서 자동차의 내.외판용등 고연성을 요구하는 부품제조에 적절하게 이용될 수 있는 효과가 있는 것이다.The present invention not only has a high elongation of more than 55% elongation, but also provides a cold rolled steel sheet having excellent moldability, shape freezing, and non-aging characteristics, and is suitable for manufacturing parts requiring high ductility such as interior and exterior of automobiles. There is an effect that can be used.

Description

연성이 우수한 비시효성 냉간압연강판의 제조방법Manufacturing method of aging cold rolled steel sheet with excellent ductility

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

제1도는 본론첨가량에 따른 연신율변화를 나타내는 그래프,1 is a graph showing the change in elongation according to the addition amount of the main body,

제2도는 보론/질소원자비에 따른 연신율변화를 나타내는 그래프.2 is a graph showing the change in elongation according to the boron / nitrogen atom ratio.

Claims (1)

저탄소강을 소재로하여 연성이 우수한 비시효성, 냉간압연강판을 상소둔에 의해 제조하는 방법에 있어서, 중량%로, C:0.01-0.03%, Mn:0.05-0.3%, B:15-45ppm, N:70ppm이하, 잔부 Fe및 불가피하게 함유된 불순물로 조성되고 :보론(B)/질소(N) 원자비가 0.8-2.0인 저탄소 알루미늄 킬드강을 통상의 방법으로 열간압연 및 냉간압연하여 630-680℃범위의 온도에서 1시간 이상 상소둔함을 특징으로 하는 연성이 우수한 비시효성 냉간압연강판의 제조방법.In the method for producing a non-aging, cold rolled steel sheet having excellent ductility by using low carbon steel as annealing, in weight%, C: 0.01-0.03%, Mn: 0.05-0.3%, B: 15-45ppm, N: 70ppm or less, low-carbon aluminum-kilted steel with a balance of Fe and inevitably contained impurities and having a boron (B) / nitrogen (N) atomic ratio of 0.8-2.0, hot-rolled and cold-rolled in a conventional manner to produce 630-680. A method for producing an aging cold rolled steel sheet having excellent ductility, characterized by annealing at least 1 hour at a temperature in the range of ℃. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910022215A 1991-12-05 1991-12-05 Making method of cold rolling steel sheet KR940007274B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910022215A KR940007274B1 (en) 1991-12-05 1991-12-05 Making method of cold rolling steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910022215A KR940007274B1 (en) 1991-12-05 1991-12-05 Making method of cold rolling steel sheet

Publications (2)

Publication Number Publication Date
KR930013187A true KR930013187A (en) 1993-07-21
KR940007274B1 KR940007274B1 (en) 1994-08-12

Family

ID=19324211

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910022215A KR940007274B1 (en) 1991-12-05 1991-12-05 Making method of cold rolling steel sheet

Country Status (1)

Country Link
KR (1) KR940007274B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100256345B1 (en) * 1995-12-23 2000-05-15 이구택 The manufacturing method for high strength cold rolling steel sheet
KR100276340B1 (en) * 1996-12-24 2000-12-15 이구택 The manufacturing method of vacuum evaporation used low carbon cold rolling steel sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100256345B1 (en) * 1995-12-23 2000-05-15 이구택 The manufacturing method for high strength cold rolling steel sheet
KR100276340B1 (en) * 1996-12-24 2000-12-15 이구택 The manufacturing method of vacuum evaporation used low carbon cold rolling steel sheet

Also Published As

Publication number Publication date
KR940007274B1 (en) 1994-08-12

Similar Documents

Publication Publication Date Title
KR940002370A (en) Austenitic high manganese steel with excellent formability, strength and weldability, and its manufacturing method
KR840002036A (en) Manufacturing method of copper alloy and copper alloy plate for electric and electronic parts
KR960034447A (en) A thin steel sheet having excellent moldability and a manufacturing method thereof
KR920019959A (en) High temperature cold rolled steel for non-aging BH drawing
CA2371333A1 (en) Steel for plastic molds and process for the heat treatment thereof
US3201230A (en) Austenitic stainless steel
KR880004107A (en) Cold Rolled Steel Sheet and Manufacturing Method Thereof
ATE282096T1 (en) FERRITIC NIOBIUM STABILIZED 14 CHROME STEEL AND ITS USE IN MOTOR VEHICLES
KR930013187A (en) Manufacturing method of aging cold rolled steel sheet with excellent ductility
KR950032676A (en) Hot Rolled Ferrite Steels for Automobile Exhaust Materials
KR19990014738A (en) Ferritic stainless steel for automotive exhaust system equipment
KR870002292A (en) Cryogenic Alloys and Manufacturing Processes
KR950018528A (en) Manufacturing method of soft tin plated disc
KR970065740A (en) Manufacturing method of ferritic stainless steel excellent in corrosion resistance and moldability
KR950026994A (en) Direct rolled cold rolled steel sheet with excellent formability and manufacturing method
KR970001579A (en) Coil binding steel with excellent ductility and its manufacturing method
KR970006520A (en) Manufacturing method of cold rolled steel sheet for expansion vessel with excellent weldability and formability
KR950014345A (en) Manufacturing method of cold rolled steel sheet with excellent hardening and moldability
KR940009348A (en) Non-oriented electrical steel sheet with excellent magnetic properties and manufacturing method
JPS6051537B2 (en) Manufacturing method of aluminum killed cold rolled steel sheet with excellent hollowability
KR930013168A (en) Manufacturing method of cold rolled steel sheet having excellent shape freezing and press formability
KR960001147A (en) Non-oriented electrical steel sheet manufacturing method with excellent magnetic properties by hot rolling condition control
KR970006518A (en) Ferritic stainless steel manufacturing method with excellent formability and stiffness resistance
KR960017873A (en) Manufacturing method of non-oriented electrical steel sheet with high tensile strength
KR970015774A (en) High toughness coil binding steel and manufacturing method

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20030801

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee