KR20040057330A - 용접성이 우수한 베이나이트 레일강 및 그 제조방법 - Google Patents
용접성이 우수한 베이나이트 레일강 및 그 제조방법 Download PDFInfo
- Publication number
- KR20040057330A KR20040057330A KR1020020084023A KR20020084023A KR20040057330A KR 20040057330 A KR20040057330 A KR 20040057330A KR 1020020084023 A KR1020020084023 A KR 1020020084023A KR 20020084023 A KR20020084023 A KR 20020084023A KR 20040057330 A KR20040057330 A KR 20040057330A
- Authority
- KR
- South Korea
- Prior art keywords
- less
- steel
- rail steel
- weldability
- manufacturing
- Prior art date
Links
Classifications
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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
- C21D8/0221—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
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- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
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 Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims (2)
- 화학적 조성이 중량%로, C : 0.25∼0.35%, Si : 0.40% 이하, Mn : 1.0∼2.0%, Mo : 0.3∼1.0%, W : 0.2∼1.0%, B : 0.002% 이하, Ti : 0.02% 이하, Nb : 0.02∼0.06%, P : 0.020% 이하, S : 0.010% 이하, N : 0.008% 이하이고, 나머지는 Fe와 기타 불가피한 불순물로 이루어지는 용접성이 우수한 베이나이트 레일강.
- 청구항 제1항의 화학적 조성으로 이루어지는 조성물을 오스테나이트 온도영역에서 열간압연한 후에, 베이나이트 변태가 완료되는 500∼300℃의 온도구간까지 1∼10℃/sec의 냉각속도로 가속냉각시킨 후, 상온까지 공냉시키는 과정을 포함하는 용접성이 우수한 베이나이트 레일강의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020084023A KR100955222B1 (ko) | 2002-12-26 | 2002-12-26 | 용접성이 우수한 베이나이트 레일강 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020084023A KR100955222B1 (ko) | 2002-12-26 | 2002-12-26 | 용접성이 우수한 베이나이트 레일강 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040057330A true KR20040057330A (ko) | 2004-07-02 |
KR100955222B1 KR100955222B1 (ko) | 2010-04-29 |
Family
ID=37349922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020020084023A KR100955222B1 (ko) | 2002-12-26 | 2002-12-26 | 용접성이 우수한 베이나이트 레일강 제조방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100955222B1 (ko) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU663023B2 (en) * | 1993-02-26 | 1995-09-21 | Nippon Steel Corporation | Process for manufacturing high-strength bainitic steel rails with excellent rolling-contact fatigue resistance |
JP3456427B2 (ja) | 1998-11-26 | 2003-10-14 | Jfeスチール株式会社 | 耐摩耗性と耐フレーキング性に優れたベイナイト型レール |
JP2000328138A (ja) | 1999-05-20 | 2000-11-28 | Nkk Corp | 耐摩耗性と耐フレーキング性に優れたベイナイト型レールの製造方法 |
KR100544657B1 (ko) * | 2001-12-21 | 2006-01-23 | 재단법인 포항산업과학연구원 | 내마모성이 우수한 레일용 베이나이트강 |
-
2002
- 2002-12-26 KR KR1020020084023A patent/KR100955222B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR100955222B1 (ko) | 2010-04-29 |
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