EP2255021A2 - Stahllegierung für einen niedrig legierten stahl zur herstellung hochfester nahtloser stahlrohre - Google Patents
Stahllegierung für einen niedrig legierten stahl zur herstellung hochfester nahtloser stahlrohreInfo
- Publication number
- EP2255021A2 EP2255021A2 EP09712055A EP09712055A EP2255021A2 EP 2255021 A2 EP2255021 A2 EP 2255021A2 EP 09712055 A EP09712055 A EP 09712055A EP 09712055 A EP09712055 A EP 09712055A EP 2255021 A2 EP2255021 A2 EP 2255021A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- max
- alloy
- content
- tubes
- 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
Links
- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 238000005098 hot rolling Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000007792 addition Methods 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- 238000005275 alloying Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 230000000930 thermomechanical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- ZLANVVMKMCTKMT-UHFFFAOYSA-N methanidylidynevanadium(1+) Chemical class [V+]#[C-] ZLANVVMKMCTKMT-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
Definitions
- the invention relates to a steel alloy for a low-alloy steel for producing high-strength weldable seamless steel pipes according to claim 1.
- the invention relates to tubes which may also have deviating cross-sections and are provided as construction tubes for particularly highly stressed welded steel structures, for example in crane, bridge, ship, hoist and truck construction.
- Such tubes can in addition to circular cross sections depending on the requirements and application z. B. have square, rectangular or polygonal cross-sections.
- Steel alloys for such steel pipes are known for example from DE 199 42 641 A1.
- This known steel alloy in addition to minor additions of chromium, molybdenum and vanadium as a special feature for a low-alloy steel waiving nickel addition of tungsten in the range of 0.30 - 1, 00%.
- Construction tubes for the above-mentioned applications are subject to the highest demands in terms of strength and toughness at low temperatures up to -4O 0 C.
- the tubes In order to achieve the required properties, the tubes must be subjected to a tempering treatment after hot rolling.
- FGS 70 the steel known from DE 19942641 A1 as FGS 70, all the required minimum values for yield strength, tensile strength, elongation at break and impact energy were reliably achieved.
- the strength-increasing mechanism which at the same time leads to an increase in toughness, is known to reduce the grain size. You can z. Example by the addition of nickel or molybdenum and the associated reduction in the transformation temperature can be achieved.
- Vanadium is also used to increase strength. This concept is based on the solid-solution hardening of vanadium and the precipitation of finest vanadium carbides during annealing. With the aforementioned alloy concepts, however, the required properties can not be achieved.
- a reduction of the grain size to improve the mechanical properties can in principle be carried out by thermomechanical treatment.
- thermo-mechanical treatment concepts do not allow for the required reduction in forming temperature for the application of known thermo-mechanical treatment concepts.
- the object of the invention is to provide a low-cost steel alloy for a low-alloy steel for producing high-strength weldable seamless steel pipes, in particular construction pipes, which meets the minimum requirements for yield strength, tensile strength and impact energy safely and beyond ensures good overall weldability and during hot rolling leads to optically flawless surfaces.
- the remainder is iron with impurities caused by melting, with optional addition of one or more elements of Al, Ni, Nb and Ti, with the proviso that the ratio V / N has a value of 4 to 12 and the Ni content of the steel is not. is more than 0.40%.
- the steel alloy according to the invention is based on the development of the known from DE 199 42 641 A1 tungsten-alloy Feinkombaustahls.
- the invention includes the innovative concept of raising the recrystallization stop temperature significantly above the final rolling temperature by targeted micro-alloying with vanadium and nitrogen. Based on extensive thermodynamic calculations, the ratio of the contents of V and N must be between 4 and 12 in order to achieve the desired effect.
- an optional alloying of one or more alloying elements of Al 1 Ni, Nb and Ti is provided according to requirements. These requirements can be z. B. from different to be rolled wall thicknesses of the tubes, which may be in the range of less than 10 mm to about 80 mm and in particular for larger wall thicknesses require a Zuleg réelle said elements in order to achieve the required properties by grain refining.
- the Ni content is with max. 0.40% low enough to produce a sufficiently good surface quality for the tube contour method mainly used for this steel grade.
- the Ni content is limited to 0.20%, preferably 0.15%, in particular not more than 0.10% to achieve a sufficient surface quality.
- the seamless steel tubes produced from an operating melt with the steel alloy of the invention listed below have excellent strength and toughness properties.
- the values are the mean values of four tensile specimens or four notched-bar impact specimens.
- the samples were taken as longitudinal samples from heat-treated tubes made in-house.
- OD outer diameter
- WD wall thickness
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09712055T PL2255021T3 (pl) | 2008-02-20 | 2009-01-23 | Stop stalowy dla stali niskostopowej do wytwarzania rur stalowych bez szwu o wysokiej wytrzymałości |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008010749A DE102008010749A1 (de) | 2008-02-20 | 2008-02-20 | Stahllegierung für einen niedrig legierten Stahl zur Herstellung hochfester nahtloser Stahlrohre |
PCT/DE2009/000088 WO2009103259A2 (de) | 2008-02-20 | 2009-01-23 | Stahllegierung für einen niedrig legierten stahl zur herstellung hochfester nahtloser stahlrohre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2255021A2 true EP2255021A2 (de) | 2010-12-01 |
EP2255021B1 EP2255021B1 (de) | 2011-08-31 |
Family
ID=40791306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09712055A Active EP2255021B1 (de) | 2008-02-20 | 2009-01-23 | Stahllegierung für einen niedrig legierten stahl zur herstellung hochfester nahtloser stahlrohre |
Country Status (14)
Country | Link |
---|---|
US (1) | US8865061B2 (de) |
EP (1) | EP2255021B1 (de) |
JP (1) | JP5486515B2 (de) |
KR (1) | KR101563604B1 (de) |
CN (1) | CN101952472B (de) |
AR (1) | AR070612A1 (de) |
AT (1) | ATE522634T1 (de) |
DE (1) | DE102008010749A1 (de) |
ES (1) | ES2372801T3 (de) |
MX (1) | MX2010008975A (de) |
PL (1) | PL2255021T3 (de) |
RU (1) | RU2482211C2 (de) |
UA (1) | UA100548C2 (de) |
WO (1) | WO2009103259A2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010004155A1 (de) * | 2010-01-04 | 2011-07-07 | V & M Deutschland GmbH, 40472 | Verbindungsanordnung von unter Axialdruck stehenden Hohlprofilen aus Stahl |
ES2846779T3 (es) | 2016-07-13 | 2021-07-29 | Vallourec Deutschland Gmbh | Acero microaleado y método para producir dicho acero |
CN108251747B (zh) * | 2018-02-05 | 2020-01-10 | 衡阳华菱钢管有限公司 | 起重机臂架用钢管及其制造方法 |
CN111020369B (zh) * | 2019-10-31 | 2021-04-23 | 鞍钢股份有限公司 | 耐高温95ksi级火驱稠油热采用无缝钢管及制造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3628712A1 (de) * | 1986-08-23 | 1988-02-25 | Kloeckner Stahl Gmbh | Denitrierter, niedriglegierter, hochfester, grubenbestaendiger feinkornbaustahl |
DE4446709A1 (de) * | 1994-12-15 | 1996-06-27 | Mannesmann Ag | Verwendung einer Stahllegierung für Konstruktions-Hohlprofile |
DE19942641A1 (de) | 1999-08-30 | 2001-03-22 | Mannesmann Ag | Verwendung einer Stahllegierung zur Herstellung hochfester nahtloser Stahlrohre |
CN1482648A (zh) * | 2000-03-02 | 2004-03-17 | 住友金属工业株式会社 | 彩色显象管荫罩框及框架构件 |
FR2823226B1 (fr) * | 2001-04-04 | 2004-02-20 | V & M France | Acier et tube en acier pour usage a haute temperature |
EP1408131A1 (de) * | 2002-09-27 | 2004-04-14 | CARL DAN. PEDDINGHAUS GMBH & CO. KG | Stahlzusammensetzung und daraus hergestellte Gesenkschmiedeteile |
RU2243284C2 (ru) * | 2002-12-02 | 2004-12-27 | Открытое акционерное общество "Волжский трубный завод" | Сталь повышенной коррозионной стойкости и бесшовные трубы, выполненные из нее |
DE102005046459B4 (de) * | 2005-09-21 | 2013-11-28 | MHP Mannesmann Präzisrohr GmbH | Verfahren zur Herstellung von kaltgefertigten Präzisionsstahlrohren |
-
2008
- 2008-02-20 DE DE102008010749A patent/DE102008010749A1/de not_active Withdrawn
-
2009
- 2009-01-23 RU RU2010138609/02A patent/RU2482211C2/ru active
- 2009-01-23 KR KR1020107018414A patent/KR101563604B1/ko active IP Right Grant
- 2009-01-23 CN CN2009801057998A patent/CN101952472B/zh active Active
- 2009-01-23 PL PL09712055T patent/PL2255021T3/pl unknown
- 2009-01-23 EP EP09712055A patent/EP2255021B1/de active Active
- 2009-01-23 ES ES09712055T patent/ES2372801T3/es active Active
- 2009-01-23 US US12/918,457 patent/US8865061B2/en active Active
- 2009-01-23 WO PCT/DE2009/000088 patent/WO2009103259A2/de active Application Filing
- 2009-01-23 MX MX2010008975A patent/MX2010008975A/es active IP Right Grant
- 2009-01-23 AT AT09712055T patent/ATE522634T1/de active
- 2009-01-23 JP JP2010547035A patent/JP5486515B2/ja active Active
- 2009-01-23 UA UAA201011078A patent/UA100548C2/ru unknown
- 2009-02-18 AR ARP090100558A patent/AR070612A1/es active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2009103259A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009103259A2 (de) | 2009-08-27 |
EP2255021B1 (de) | 2011-08-31 |
CN101952472B (zh) | 2013-03-06 |
RU2010138609A (ru) | 2012-03-27 |
AR070612A1 (es) | 2010-04-21 |
JP5486515B2 (ja) | 2014-05-07 |
RU2482211C2 (ru) | 2013-05-20 |
DE102008010749A1 (de) | 2009-09-24 |
ATE522634T1 (de) | 2011-09-15 |
WO2009103259A3 (de) | 2009-11-12 |
ES2372801T3 (es) | 2012-01-26 |
PL2255021T3 (pl) | 2012-01-31 |
UA100548C2 (ru) | 2013-01-10 |
US8865061B2 (en) | 2014-10-21 |
KR20100122083A (ko) | 2010-11-19 |
JP2011514932A (ja) | 2011-05-12 |
US20110315277A1 (en) | 2011-12-29 |
MX2010008975A (es) | 2010-11-12 |
CN101952472A (zh) | 2011-01-19 |
KR101563604B1 (ko) | 2015-10-27 |
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Inventor name: SCHUETZ, MARKUS Inventor name: STALLYBRASS, CHARLES Inventor name: KAUCKE, CHRISTOPH Inventor name: SCHNEIDER, ANDRE Inventor name: SANDERS, HEINZ Inventor name: KUBLA, GUIDO |
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