KR101018055B1 - 내화용 고강도 압연 강재 및 그 제조 방법 - Google Patents
내화용 고강도 압연 강재 및 그 제조 방법 Download PDFInfo
- Publication number
- KR101018055B1 KR101018055B1 KR1020087016006A KR20087016006A KR101018055B1 KR 101018055 B1 KR101018055 B1 KR 101018055B1 KR 1020087016006 A KR1020087016006 A KR 1020087016006A KR 20087016006 A KR20087016006 A KR 20087016006A KR 101018055 B1 KR101018055 B1 KR 101018055B1
- Authority
- KR
- South Korea
- Prior art keywords
- less
- steel
- strength
- mass
- rolling
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 87
- 239000010959 steel Substances 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 title description 18
- 230000009970 fire resistant effect Effects 0.000 title description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 31
- 238000005096 rolling process Methods 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 13
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 6
- 230000001186 cumulative effect Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000006104 solid solution Substances 0.000 description 44
- 230000000694 effects Effects 0.000 description 30
- 238000005728 strengthening Methods 0.000 description 21
- 229910052758 niobium Inorganic materials 0.000 description 15
- 229910052796 boron Inorganic materials 0.000 description 10
- 230000007547 defect Effects 0.000 description 10
- 239000002244 precipitate Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 9
- 238000005275 alloying Methods 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 208000034189 Sclerosis Diseases 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100065878 Caenorhabditis elegans sec-10 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical class [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C22C38/12—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
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 Steel (AREA)
Abstract
Description
Claims (6)
- 질량%로,C: 0.005% 이상 0.04% 미만,Mn: 0.8% 내지 1.7%,Si: 0.05% 이상 0.4% 미만,Nb: 0.02% 내지 1%,Ti: 0.005% 내지 0.02%,N: 0.005% 이하,B: 0.0003% 내지 0.003%,Al: 0.005% 내지 0.03%를 함유하고, 또한 질량%로, Ti/N가 2 내지 8의 범위 내이며, C-Nb/7.74가 0.02% 이하이고, 잔부가 Fe 및 불가피한 불순물로 이루어지는, 600℃에 있어서의 0.2% 내력의 실온에 있어서의 항복 강도(항복점이 불명료한 경우에는 0.2% 내력)에 대한 비가 0.50 이상인 것을 특징으로 하는 내화용 고강도 압연 강재.
- 제1항에 있어서,질량%로,Cr: 0.4% 이하(0%는 제외),Cu: 1% 이하(0%는 제외),Ni: 0.7% 이하(0%는 제외)중 어느 1종 또는 2종 이상을 추가로 함유하는 내화용 고강도 압연 강재.
- 질량%로,C: 0.005% 이상 0.04% 미만,Mn: 0.8% 내지 1.7%,Si: 0.05% 이상 0.4% 미만,Nb: 0.02% 내지 1%,Ti: 0.0O5% 내지 0.02%,N: 0.005% 이하,B: 0.0OO3% 내지 0.003%,Al: 0.005% 내지 0.03%를 함유하고, 또한 질량%로, Ti/N가 2 내지 8의 범위 내이며, C-Nb/7.74가 0.02% 이하며, 잔부가 Fe 및 불가피한 불순물로 이루어지는 주편을, 1250℃ 내지 1350℃의 온도역으로 가열한 후에 압연을 개시하고, 1000℃ 이하에서의 누적 압하율이 30% 이상이 되는 압연을 실시하는, 600℃에 있어서의 0.2% 내력과 실온에 있어서의 항복 강도(항복점이 불명료한 경우에는 0.2% 내력)의 비가 0.50 이상인 것을 특징으로 하는 내화용 고강도 압연 강재의 제조 방법.
- 제3항에 있어서,상기 주편은 질량%로,Cr: 0.4% 이하(0%는 제외),Cu: 1% 이하(0%는 제외),Ni: 0.7% 이하(0%는 제외)중 어느 1종 또는 2종 이상을 함유하는 내화용 고강도 압연 강재의 제조 방법.
- 질량%로,C: 0.005% 이상 0.04% 미만,Mn: 0.8% 내지 1.7%,Si: 0.05% 이상 0.4% 미만,Nb: 0.02% 내지 1%,Ti: 0.005% 내지 0.02%,N: 0.005% 이하,B: 0.0003% 내지 0.003%,Al: 0.005% 내지 0.03%를 함유하고, 또한 질량%로, Ti/N가 2 내지 8의 범위 내이며, C-Nb/7.74 가 0.02% 이하며, 잔부가 Fe 및 불가피한 불순물로 이루어지는 주편을, 1250℃ 내지 1350℃의 온도역으로 가열한 후에 압연을 개시하고, 상기 압연 종료 후 800℃ 내지 500℃의 온도범위에 있어서 0.1℃/초 내지 10℃/초의 평균 냉각 속도로 냉각하는, 600℃에 있어서의 0.2% 내력과 실온에 있어서의 항복 강도(항복점이 불명료한 경우는 0.2% 내력)의 비가 0.50 이상인 것을 특징으로 하는 내화용 고강도 압연 강재의 제조 방법.
- 제5항에 있어서,상기 주편은 질량%로,Cr: 0.4% 이하(0%는 제외),Cu: 1% 이하(0%는 제외),Ni: 0.7% 이하(0%는 제외)중 어느 1종 또는 2종 이상을 함유하는 내화용 고강도 압연 강재의 제조 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006030962 | 2006-02-08 | ||
JPJP-P-2006-00030962 | 2006-02-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20080077240A KR20080077240A (ko) | 2008-08-21 |
KR101018055B1 true KR101018055B1 (ko) | 2011-03-02 |
Family
ID=38345311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020087016006A KR101018055B1 (ko) | 2006-02-08 | 2007-02-08 | 내화용 고강도 압연 강재 및 그 제조 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090020190A1 (ko) |
EP (1) | EP1983069A4 (ko) |
JP (1) | JP5114743B2 (ko) |
KR (1) | KR101018055B1 (ko) |
CN (1) | CN101379209A (ko) |
WO (1) | WO2007091725A1 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004062739A1 (de) * | 2004-12-27 | 2006-07-06 | Degussa Ag | Selbstreinigende Oberflächen mit durch hydrophobe Partikel gebildeten Erhebungen, mit verbesserter mechanischer Festigkeit |
JP4741528B2 (ja) * | 2007-02-09 | 2011-08-03 | 新日本製鐵株式会社 | 高温特性に優れた蒸気輸送配管用鋼板及び鋼管並びにそれらの製造方法 |
CN102400049B (zh) * | 2010-09-07 | 2014-03-12 | 鞍钢股份有限公司 | 一种490级别建筑结构用耐火钢板及其制造方法 |
CN102851596B (zh) * | 2011-06-28 | 2015-10-07 | 鞍钢股份有限公司 | 一种低成本490MPa级建筑结构用耐火钢板及其制造方法 |
JP5574059B2 (ja) | 2011-12-15 | 2014-08-20 | 新日鐵住金株式会社 | 低温靭性に優れた高強度h形鋼及びその製造方法 |
WO2014175122A1 (ja) | 2013-04-26 | 2014-10-30 | 新日鐵住金株式会社 | H形鋼及びその製造方法 |
CN104561819B (zh) * | 2014-11-26 | 2017-05-24 | 南京钢铁股份有限公司 | 一种q460级耐火耐候钢及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07286233A (ja) * | 1994-04-19 | 1995-10-31 | Nippon Steel Corp | 耐火性の優れた建築用低降伏比鋼材およびその製造方法 |
JP2000248335A (ja) | 1999-02-26 | 2000-09-12 | Nippon Steel Corp | 靭性に優れた低降伏比型耐火用熱延鋼板及び鋼管並びにそれらの製造方法 |
JP2000282167A (ja) | 1999-03-29 | 2000-10-10 | Nippon Steel Corp | 靱性に優れた低降伏比型鋼材及び鋼管並びにそれらの製造方法 |
JP2002146484A (ja) | 2000-11-10 | 2002-05-22 | Sanyo Special Steel Co Ltd | 高強度フェライト系耐熱鋼 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5877528A (ja) * | 1981-10-31 | 1983-05-10 | Nippon Steel Corp | 低温靭性の優れた高張力鋼の製造法 |
JPH08333651A (ja) * | 1995-06-06 | 1996-12-17 | Nippon Steel Corp | 耐haz硬化特性に優れた鋼材 |
JP3817064B2 (ja) * | 1998-04-22 | 2006-08-30 | 新日本製鐵株式会社 | 低降伏比型耐火用熱延鋼板及び鋼管並びにそれらの製造方法 |
JP3559455B2 (ja) * | 1998-08-10 | 2004-09-02 | 新日本製鐵株式会社 | 低降伏比型耐火用鋼材及び鋼管並びにそれらの製造方法 |
JP2001262225A (ja) * | 2000-03-14 | 2001-09-26 | Nkk Corp | 極厚h形鋼の製造方法 |
JP4362219B2 (ja) * | 2000-10-11 | 2009-11-11 | 新日本製鐵株式会社 | 高温強度に優れた鋼およびその製造方法 |
JP2002294391A (ja) * | 2001-03-29 | 2002-10-09 | Kawasaki Steel Corp | 建築構造用鋼及びその製造方法 |
JP2004360361A (ja) * | 2003-06-06 | 2004-12-24 | Nippon Steel Corp | 無耐火被覆鉄骨構造物 |
JP2005194869A (ja) * | 2003-12-10 | 2005-07-21 | Nippon Steel Corp | 耐火被覆を省略または削減可能な鉄骨構造物 |
JP4631299B2 (ja) * | 2004-03-25 | 2011-02-16 | Jfeスチール株式会社 | 耐火性に優れた低降伏比圧延h形鋼およびその製造法 |
-
2007
- 2007-02-08 KR KR1020087016006A patent/KR101018055B1/ko active IP Right Grant
- 2007-02-08 JP JP2007557917A patent/JP5114743B2/ja not_active Expired - Fee Related
- 2007-02-08 WO PCT/JP2007/052658 patent/WO2007091725A1/ja active Application Filing
- 2007-02-08 US US12/223,690 patent/US20090020190A1/en not_active Abandoned
- 2007-02-08 CN CNA2007800048687A patent/CN101379209A/zh active Pending
- 2007-02-08 EP EP07708393A patent/EP1983069A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07286233A (ja) * | 1994-04-19 | 1995-10-31 | Nippon Steel Corp | 耐火性の優れた建築用低降伏比鋼材およびその製造方法 |
JP2000248335A (ja) | 1999-02-26 | 2000-09-12 | Nippon Steel Corp | 靭性に優れた低降伏比型耐火用熱延鋼板及び鋼管並びにそれらの製造方法 |
JP2000282167A (ja) | 1999-03-29 | 2000-10-10 | Nippon Steel Corp | 靱性に優れた低降伏比型鋼材及び鋼管並びにそれらの製造方法 |
JP2002146484A (ja) | 2000-11-10 | 2002-05-22 | Sanyo Special Steel Co Ltd | 高強度フェライト系耐熱鋼 |
Also Published As
Publication number | Publication date |
---|---|
EP1983069A4 (en) | 2011-03-02 |
WO2007091725A1 (ja) | 2007-08-16 |
JP5114743B2 (ja) | 2013-01-09 |
CN101379209A (zh) | 2009-03-04 |
US20090020190A1 (en) | 2009-01-22 |
KR20080077240A (ko) | 2008-08-21 |
JPWO2007091725A1 (ja) | 2009-07-02 |
EP1983069A1 (en) | 2008-10-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5079793B2 (ja) | 高温特性と靭性に優れた鋼材及びその製造方法 | |
US4521258A (en) | Method of making wrought high tension steel having superior low temperature toughness | |
JP5079794B2 (ja) | 高温強度、靭性に優れた鋼材並びにその製造方法 | |
JP6829765B2 (ja) | 低降伏比型超高強度鋼材及びその製造方法 | |
KR101018055B1 (ko) | 내화용 고강도 압연 강재 및 그 제조 방법 | |
KR101185977B1 (ko) | 고온 강도, 인성 및 재열 취화 저항 특성이 우수한 내화 강재 및 그 제조 방법 | |
JP5098210B2 (ja) | 耐火用鋼材およびその製造方法 | |
JPH10306316A (ja) | 低温靭性に優れた低降伏比高張力鋼材の製造方法 | |
JP2019504199A (ja) | 低降伏比型高強度鋼材及びその製造方法 | |
JP4959402B2 (ja) | 耐表面割れ特性に優れた高強度溶接構造用鋼とその製造方法 | |
JP2006241510A (ja) | 大入熱溶接部hazの低温靭性に優れた高強度溶接構造用鋼とその製造方法 | |
JP5008879B2 (ja) | 強度および低温靭性の優れた高張力鋼板および高張力鋼板の製造方法 | |
JPH0413406B2 (ko) | ||
KR100431850B1 (ko) | 저항복비를 갖는 고강도 강 및 그 제조방법 | |
JP4757858B2 (ja) | 高温強度、靭性及び耐再熱脆化特性に優れた耐火鋼材並びにその製造方法 | |
JPH093591A (ja) | 極厚高張力鋼板およびその製造方法 | |
JP4757857B2 (ja) | 高温強度、靭性及び耐再熱脆化特性に優れた耐火鋼材並びにその製造方法 | |
JP4762450B2 (ja) | 母材靭性と溶接部haz靭性に優れた高強度溶接構造用鋼の製造方法 | |
JP2005029841A (ja) | 大入熱溶接部hazの低温靭性に優れた高強度溶接構造用鋼とその製造方法 | |
JP4105991B2 (ja) | 超大入熱溶接部haz靭性に優れた高強度溶接構造用鋼とその製造方法 | |
KR19990039203A (ko) | 고장력 열연강판의 제조방법 | |
JP4959401B2 (ja) | 耐表面割れ特性に優れた高強度溶接構造用鋼とその製造方法 | |
JP2005029840A (ja) | 母材靭性と溶接部haz靭性の両方に優れた高強度溶接構造用鋼とその製造方法 | |
JP5168045B2 (ja) | 高温強度、靭性及び耐再熱脆化特性に優れた耐火鋼材並びにその製造方法 | |
JPH04314824A (ja) | 溶接性の優れた低降伏比70kgf/mm2級高張力鋼の製造法 |
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: 20140204 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20150119 Year of fee payment: 5 |
|
FPAY | Annual fee payment |
Payment date: 20160119 Year of fee payment: 6 |
|
FPAY | Annual fee payment |
Payment date: 20170119 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20180202 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20190130 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20200205 Year of fee payment: 10 |