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 PDFInfo
- 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
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)
- Mechanical Engineering (AREA)
- Materials 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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950009670A KR0143469B1 (en) | 1995-04-24 | 1995-04-24 | The making method of cold rolling steel plate with forming |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950009670A KR0143469B1 (en) | 1995-04-24 | 1995-04-24 | The making method of cold rolling steel plate with forming |
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 KR0143469B1 (en) | 1995-04-24 | 1995-04-24 | The making method of cold rolling steel plate with forming |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0143469B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100759197B1 (en) * | 2006-06-30 | 2007-09-14 | 현대하이스코 주식회사 | Baf heat treating method for ultra deep drawing cold rolled steel sheet |
Families Citing this family (2)
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 |
-
1995
- 1995-04-24 KR KR1019950009670A patent/KR0143469B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100759197B1 (en) * | 2006-06-30 | 2007-09-14 | 현대하이스코 주식회사 | Baf heat treating method for ultra deep drawing cold rolled steel sheet |
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 | |
JPS61217529A (en) | Manufacture of high strength steel sheet superior in ductility | |
JP7239685B2 (en) | Hot-rolled steel sheet with high hole expansion ratio and method for producing the same | |
KR930017636A (en) | Manufacturing method of steel plate for high strength can | |
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) | Production of titanium-containing ferritic stainless steel sheet excellent in 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 | |
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 | |
KR20190049294A (en) | Ultra high strength steel sheet having good cold workability and its manufacturing method | |
JP2793284B2 (en) | Manufacturing method of ultra-high strength cold rolled steel sheet with excellent bake hardenability | |
CN114369758A (en) | High-strength high-toughness hot stamping steel matrix and preparation method and application thereof | |
KR970001579A (en) | Coil binding steel with excellent ductility and its manufacturing method | |
JPS6052551A (en) | Steel having high ductility and high workability and its production | |
JP3043901B2 (en) | Method for producing high-strength cold-rolled steel sheet and galvanized steel sheet with excellent deep drawability | |
JP2004232018A (en) | Method for producing complex structure type high tension cold-rolled steel sheet excellent in deep drawability | |
JPH01191739A (en) | Production of hot rolled steel sheet having excellent workability, baking hardenability and room temperature delayed aging property | |
KR950008708A (en) | Manufacturing method of ultra-high strength cold rolled steel sheet with excellent spot weldability and press workability | |
JPH0774412B2 (en) | High-strength thin steel sheet excellent in workability and resistance to placement cracking and method for producing the same | |
JPH05186824A (en) | Production of cold rolled steel sheet having high strength and high ductility and excellent in aging characteristic | |
JP2003013176A (en) | High-ductility cold-rolled steel sheet superior in press formability and strain aging hardening characterisitics, and manufacturing method therefor | |
JP2000073123A (en) | Production of titanium-containing ferritic stainless steel sheet excellent in workability | |
JPS5848616B2 (en) | Manufacturing method for low yield ratio hot-rolled high-strength steel plate with excellent ductility |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20120403 Year of fee payment: 15 |
|
LAPS | Lapse due to unpaid annual fee |