EP0882807B1 - Feuerresistente nickelfreie Stähle für den Stahlbau und Verfahren zur Herstellung von Grobblech daraus - Google Patents
Feuerresistente nickelfreie Stähle für den Stahlbau und Verfahren zur Herstellung von Grobblech daraus Download PDFInfo
- Publication number
- EP0882807B1 EP0882807B1 EP98110023A EP98110023A EP0882807B1 EP 0882807 B1 EP0882807 B1 EP 0882807B1 EP 98110023 A EP98110023 A EP 98110023A EP 98110023 A EP98110023 A EP 98110023A EP 0882807 B1 EP0882807 B1 EP 0882807B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- steels
- yield point
- fire
- degrees
- 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.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title 2
- 229910052759 nickel Inorganic materials 0.000 title 1
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 238000009749 continuous casting Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011733 molybdenum Substances 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 238000003303 reheating Methods 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 238000000137 annealing Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- 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
- C22C38/18—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 fire-resistant nickel-free steels with a yield strength Re> 280 N / mm 2 and a yield strength ratio Re / Rm (yield strength R e : tensile strength R m ) between 0.4 and 0.6, in particular in the form of heavy plates for use in steel construction and a process for the production of heavy plates from it.
- Fire resistant steels must have high heat resistance have, so in steel construction a reduction of expensive Fire protection measures is made possible. At the same time a fire resistant steel to achieve a good one Deformation behavior a very low yield ratio Show Re / Rm. This increases the security of the Construction against mechanical failure Burden.
- the steels to be created according to the invention also have structural steel for steel structures requirements regarding To meet toughness and processing behavior and increased resistance to atmospheric corrosion To have (weather resistance).
- the critical temperature is reached when the at this temperature measured yield point below 2/3 of the yield point measured at room temperature has sunk.
- Conventional structural steels have about 350 ° C their critical temperature. Because of the need expensive fire protection measures for conventional structural steels Having to undertake to a considerable extent is one Inexpensive construction work is not guaranteed and a optimal use of space is often difficult.
- a number of suitable fire-resistant steels with yield strength values of at least 270 to 450 N / mm 2 and increased heat resistance are known, for example from EP 0 470 055 A2.
- the critical temperature could be up to max. 600 ° C can be raised. This has already improved fire protection.
- the improvement in the deformation behavior is very small because the yield strength ratio of these steels is only 10% lower than that of conventional structural steels with the same high yield strength.
- the object of the present invention is now based on proposing steels with which fire protection measures through a state of the art increased critical temperature can be further reduced can and at the same time a well known Steels improved ductility through a lower Have yield strength ratio. This is supposed to inexpensive and modern building design with high Security against mechanical failure of the construction enables and, in parallel, increased resistance against atmospheric corrosion.
- the steel according to the invention is used in free-standing or continuous casting cast into slabs, which after heating to 1050 to 1200 ° C are hot rolled at final rolling temperatures in Range from 920 to 1000 ° C. Then the Cooling in air.
- the heavy plates produced in this way with thicknesses to 50 mm are then in the temperature range from 880 to 950 ° C and can not be normalized for longer than 30 min additionally in the temperature range from 400 to 700 ° C be started.
- Steel creates a multi-phase structure that mainly consists of Ferrite and pearlite with embedded bainitic / martensitic Islands exist and moreover fine has distributed carbide deposits. On this The structure is based on the high heat resistance and the low Yield strength ratio as a prerequisite for good Deformability of the heavy plate.
- Table 1 lists the chemical compositions and the mechanical properties of three fire-resistant nickel-free steels according to the invention in the form of 20, 25 and 40 mm thick plate.
- the steels were cast into slabs, which were then heated to 1150 ° C and rolled into heavy plates. The final rolling temperature was 950 ° C. After rolling the sheets are cooled in air and then normalized annealing at 910 to 930 ° C with less than 30 min duration of hold.
- Table 2 contains the mechanical properties achieved with the new fire-resistant nickel-free steels.
- the significantly higher heat resistance of the steels according to the invention which is characterized here by the yield strength Re at 600 ° C., which is between 250 and 283 N / mm 2, is particularly characteristic. This corresponds to a reduction in the yield strength compared to room temperature with more than 2.34 / 3 well over 2/3. This allows the critical temperature to be raised to over 600 ° C. As a result, the effort for additional insulation against heating the steel in the event of a fire can be significantly reduced.
- the improved deformability of the fire-resistant steels according to the invention compared to conventional steels is also clear.
- Steels according to the invention have an approx. 0.48 to 0.54. 15 to 20% lower yield strength ratio than conventional steels with the same high yield strength values.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Steel (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
- Chemically Coating (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
Claims (3)
- Feuerresistenter nickelfreier Stahl,insbesondere in Form von Grobblech, mit einer Streckgrenze Re > 280 N/mm2 und einem Streckgrenzenverhältnis Re/Rm zwischen 0,4 und 0,6 für den Stahlbau, mit folgender chemischer Zusammensetzung (in Masse-%) :0,06 bis 0,20 % C,0,20 bis 0,30 % Si,0,50 bis 1,60 % Mn,0,020 bis 0,045 % Allösl,0,50 bis 0,90 % Cr,0,10 bis 0,40 % Mo,0,01 bis 0,05 % V,bis 0,008 % N,bis 0,75 % Cu,bis 0,0040 % B,bis 0,0030 % Ca,
- Verfahren zur Herstellung von Grobblech mit Dicken bis 50 mm aus einem der Stahl der Zusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß der Stahl im Stand- oder Strangguß zu Brammen vergossen wird, die nach dem Erwärmen auf 1050 bis 1200 °C warmgewalzt werden bei Endwalztemperaturen zwischen 920 und 1000 °C mit anschließender Abkühlung an Luft und daß die Grobbleche im Temperaturbereich von 880 bis 950 °C nicht länger als 30 min normalgeglüht werden.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die warmgewalzten und normalgeglühten Grobbleche bei Temperaturen im Bereich von 400 bis 700 °C angelassen werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19724051A DE19724051C1 (de) | 1997-06-07 | 1997-06-07 | Grobbleche einer Dicke bis 50 mm aus feuerresistenten nickelfreien Stählen für den Stahlbau und Verfahren zur Herstellung von Grobblech daraus |
DE19724051 | 1997-06-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0882807A1 EP0882807A1 (de) | 1998-12-09 |
EP0882807B1 true EP0882807B1 (de) | 2000-11-22 |
Family
ID=7831778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98110023A Expired - Lifetime EP0882807B1 (de) | 1997-06-07 | 1998-06-02 | Feuerresistente nickelfreie Stähle für den Stahlbau und Verfahren zur Herstellung von Grobblech daraus |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0882807B1 (de) |
AT (1) | ATE197723T1 (de) |
DE (2) | DE19724051C1 (de) |
DK (1) | DK0882807T3 (de) |
ES (1) | ES2152726T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10258114B4 (de) * | 2001-12-14 | 2005-11-10 | V&M Deutschland Gmbh | Verwendung eines Stahles als Werkstoff zur Herstellung feuerresistenter, schweißbarer, warmgewalzter Hohlprofile, Träger, Formstahl oder Grobblech |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19856265A1 (de) * | 1998-12-07 | 2000-06-15 | Thyssenkrupp Stahl Ag | Verfahren zur Herstellung feuerresistenter Stahlbleche |
DE10060948C2 (de) * | 2000-12-06 | 2003-07-31 | Thyssenkrupp Stahl Ag | Verfahren zum Erzeugen eines Warmbandes aus einem einen hohen Mangan-Gehalt aufweisenden Stahl |
DE202010001508U1 (de) † | 2010-01-28 | 2010-05-27 | Verwaltungsgesellschaft Fuggerstraße GbR (vertreten durch den GF Thomas von Schreitter, 41352 Korschenbroich) | Austragsleiste |
CN102912224B (zh) * | 2012-11-02 | 2014-05-28 | 湖南华菱湘潭钢铁有限公司 | 一种低合金中厚钢板的生产方法 |
CN102912223B (zh) * | 2012-11-02 | 2014-05-28 | 湖南华菱湘潭钢铁有限公司 | 一种低合金中厚钢板的生产方法 |
CN111471920B (zh) * | 2020-04-30 | 2021-09-17 | 江苏利淮钢铁有限公司 | 一种u型螺栓用非调质钢及其生产方法 |
WO2023113645A1 (ru) * | 2021-12-14 | 2023-06-22 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Способ производства низколегированного рулонного проката категории прочности с390п |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3826691A (en) * | 1973-02-05 | 1974-07-30 | Bethlehem Steel Corp | Rolled ferrite-pearlite alloy plate and method of processing same |
JPS52152814A (en) * | 1976-06-14 | 1977-12-19 | Nippon Steel Corp | Thermo-mechanical treatment of seamless steel pipe |
US4138278A (en) * | 1976-08-27 | 1979-02-06 | Nippon Steel Corporation | Method for producing a steel sheet having remarkably excellent toughness at low temperatures |
US4720307A (en) * | 1985-05-17 | 1988-01-19 | Nippon Kokan Kabushiki Kaisha | Method for producing high strength steel excellent in properties after warm working |
CA1320110C (en) * | 1988-06-13 | 1993-07-13 | Hiroshi Tamehiro | Process for manufacturing building construction steel having excellent fire resistance and low yield ratio, and construction steel material |
JP2609722B2 (ja) * | 1989-03-18 | 1997-05-14 | 新日本製鐵株式会社 | 建築用耐熱ボルトおよびナットとそれらの製造方法 |
JPH0761684B2 (ja) * | 1989-04-13 | 1995-07-05 | タジマエンジニアリング株式会社 | インフレーションフィルム製造に於けるフィルム成形用冷風の供給方法及びその冷風供給装置 |
JPH0353045A (ja) * | 1989-07-19 | 1991-03-07 | Kawasaki Steel Corp | 低温靱性ならびに高温強度に優れた低合金耐熱鋼 |
DE69003202T2 (de) * | 1989-07-31 | 1994-03-31 | Mitsubishi Heavy Ind Ltd | Hochfeste, hitzebeständige, niedrig legierte Stähle. |
JPH0713250B2 (ja) * | 1990-06-26 | 1995-02-15 | 新日本製鐵株式会社 | 耐火性の優れた建築用低降伏比鋼の製造方法 |
IT1240519B (it) * | 1990-07-30 | 1993-12-17 | Marelli Autronica | Sistema per la trasmissione di segnali, particolarmente a bordo di autoveicoli, e relativo procedimento di funzionamento |
IT1242132B (it) * | 1990-08-01 | 1994-02-16 | Ilva Spa | Procedimento per la produzione di un acciaio strutturale resistente al fuoco |
TW363082B (en) * | 1994-04-26 | 1999-07-01 | Nippon Steel Corp | Steel sheet having high strength and being suited to deep drawing and process for producing the same |
-
1997
- 1997-06-07 DE DE19724051A patent/DE19724051C1/de not_active Expired - Fee Related
-
1998
- 1998-06-02 AT AT98110023T patent/ATE197723T1/de not_active IP Right Cessation
- 1998-06-02 DE DE59800345T patent/DE59800345D1/de not_active Expired - Lifetime
- 1998-06-02 DK DK98110023T patent/DK0882807T3/da active
- 1998-06-02 ES ES98110023T patent/ES2152726T3/es not_active Expired - Lifetime
- 1998-06-02 EP EP98110023A patent/EP0882807B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10258114B4 (de) * | 2001-12-14 | 2005-11-10 | V&M Deutschland Gmbh | Verwendung eines Stahles als Werkstoff zur Herstellung feuerresistenter, schweißbarer, warmgewalzter Hohlprofile, Träger, Formstahl oder Grobblech |
Also Published As
Publication number | Publication date |
---|---|
DK0882807T3 (da) | 2001-01-02 |
ATE197723T1 (de) | 2000-12-15 |
ES2152726T3 (es) | 2001-02-01 |
EP0882807A1 (de) | 1998-12-09 |
DE59800345D1 (de) | 2000-12-28 |
DE19724051C1 (de) | 1999-03-11 |
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