EP3571324A1 - Warmgewalztes stahlflachprodukt bestehend aus einem komplexphasenstahl mit überwiegend bainitischem gefüge und verfahren zur herstellung eines solchen stahlflachprodukts - Google Patents
Warmgewalztes stahlflachprodukt bestehend aus einem komplexphasenstahl mit überwiegend bainitischem gefüge und verfahren zur herstellung eines solchen stahlflachproduktsInfo
- Publication number
- EP3571324A1 EP3571324A1 EP18702129.0A EP18702129A EP3571324A1 EP 3571324 A1 EP3571324 A1 EP 3571324A1 EP 18702129 A EP18702129 A EP 18702129A EP 3571324 A1 EP3571324 A1 EP 3571324A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- steel
- flat steel
- steel product
- temperature
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 248
- 239000010959 steel Substances 0.000 title claims abstract description 248
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 63
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 47
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 40
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 39
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 36
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 35
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 30
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 30
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 30
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 29
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 28
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 23
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 22
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 17
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 16
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 16
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 16
- 229910052796 boron Inorganic materials 0.000 claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 229910001567 cementite Inorganic materials 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 238000005098 hot rolling Methods 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 27
- 238000001953 recrystallisation Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- 230000000717 retained effect Effects 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000003618 dip coating Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000011253 protective coating Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 8
- 239000000047 product Substances 0.000 description 76
- 239000010955 niobium Substances 0.000 description 44
- 239000010936 titanium Substances 0.000 description 39
- 235000019589 hardness Nutrition 0.000 description 36
- 239000011651 chromium Substances 0.000 description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 29
- 230000015572 biosynthetic process Effects 0.000 description 28
- 230000000694 effects Effects 0.000 description 27
- 239000011572 manganese Substances 0.000 description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 150000001247 metal acetylides Chemical class 0.000 description 13
- 230000009466 transformation Effects 0.000 description 13
- 239000011575 calcium Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 239000011777 magnesium Substances 0.000 description 9
- 230000000930 thermomechanical effect Effects 0.000 description 9
- 238000005275 alloying Methods 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 239000000470 constituent Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000008092 positive effect Effects 0.000 description 7
- 229910052718 tin Inorganic materials 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 238000005204 segregation Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001887 electron backscatter diffraction Methods 0.000 description 4
- 230000006911 nucleation Effects 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 4
- 235000012771 pancakes Nutrition 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 150000003568 thioethers Chemical class 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- YMUYTQCKKRCJMP-UHFFFAOYSA-N aluminum;calcium;oxygen(2-) Chemical class [O-2].[Al+3].[Ca+2] YMUYTQCKKRCJMP-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000029142 excretion Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 235000019587 texture Nutrition 0.000 description 2
- -1 titanium nitrides Chemical class 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910003178 Mo2C Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000001016 Ostwald ripening Methods 0.000 description 1
- 229910034327 TiC Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000001609 comparable effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- OCDVSJMWGCXRKO-UHFFFAOYSA-N titanium(4+);disulfide Chemical compound [S-2].[S-2].[Ti+4] OCDVSJMWGCXRKO-UHFFFAOYSA-N 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 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
- 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
- C21D8/0247—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
- 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
- C22C38/001—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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- 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
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
- C21D2211/001—Austenite
-
- 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
- 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
- C21D2211/003—Cementite
-
- 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
- C21D2211/005—Ferrite
-
- 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
- C21D2211/008—Martensite
Definitions
- Hot rolled flat steel product consisting of a
- the invention relates to a hot rolled flat steel product consisting of a complex phase steel with a predominantly bainitic structure and superior mechanical properties, excellent
- the invention relates to a method for producing a flat steel product according to the invention.
- the flat steel products according to the invention are rolled products, such as steel strips, steel sheets or blanks produced therefrom, and blanks whose thickness is substantially less than their width and length.
- rolled products such as steel strips, steel sheets or blanks produced therefrom, and blanks whose thickness is substantially less than their width and length.
- EP 1 636 392 B1 a hot-rolled, high-strength steel sheet with a predominantly bainitic or ferritic structure is known, which should have a superior formability. In doing so, in the sense of this
- Nb -% Nb
- Ti or V and B up to 0.01%
- Mo up to 1%
- Cr up to 1%
- Cu up to 2%
- Ni up to 1%
- Sn up to 0 , 2%
- Co up to 2%
- Ca 0.0005 - 0.005%
- Rem Rem: 0.001 - 0.05%
- Mg 0.0001 - 0.05%
- Ta 0.0001 - 0.05%
- a flat steel product which has a yield strength of more than 680 MPa and up to 840 MPa, a strength of 780-950 MPa, an elongation at break of more than 10% and a hole expansion of at least 45%.
- the flat steel product consists of a steel containing (in wt .-%) 0.04 - 0.08% C, 1, 2 1, 9% Mn, 0.1 - 0.3% Si, 0.07 - 0.125 % Ti, 0.05 - 0.35% Mo, 0.15% - 0.6%, if the Mo content is 0.05 - 0.11%, or 0.10 - 0.6% Cr, if the Mo content is 0.11-0.35%, up to 0.045%, up to 0.005-0.1% Al, 0.002% -0.01% N, up to 0.004% S, up to 0.020% P and optional 0.001 - 0.2% V, balance iron and unavoidable impurities.
- the structure of the flat steel product contains more than 70% by area of granular bainite and less than 20% by area of ferrite, the remainder of the structure consisting of low bainite, martensite and retained austenite and the sum of martensite and retained austenite is less than 5%.
- the bainite contained in the structure should be granular bainite, which differs from the so-called higher and lower, no further details are given made of the nature and nature in which the bainite is to be present, for an optimized property profile, in particular with regard to
- a criterion for the deformability is the edge crack sensitivity.
- Collar pulls, points or relief holes are examples of molded in steel flat products or molded components, in particular punched or cut edges that are differently deformed further and charged in practical use. Such edges are high in practical use of the respective flat steel product or molded therefrom component
- Edge crack sensitivity is of particular importance, are body or structural components of vehicles. In these components are regularly cut openings, recesses or the like in order to meet the component intended respective function or the requirements of lightweight construction. When driving, the components are exposed to high dynamically changing loads, such as occur for example in an automobile, which runs on a poor road and is exposed to massive shock loads. Practical investigations show that it always comes back to damage due to cracks, which emanate from a cutting edge of the component.
- the object was to develop a flat steel product which has a minimized edge crack sensitivity over a broad temperature spectrum and consists of a steel which consists of the most cost-effective alloying elements possible
- the invention has achieved this object in that such a flat steel product according to claim 1 is formed.
- a hot-rolled flat steel product according to the invention is accordingly produced from a complex phase steel, also referred to as "CP steel" in the state of the art, and has a hole expansion of at least 60% determined in accordance with ISO 16630: 2009 as well as, in each case, determined according to DIN EN ISO 6892 -1: 2014, a yield strength Rp0,2 of at least 660 MPa, a tensile strength Rm of at least 760 MPa and an elongation at break A80 of at least 10%.
- CP steel complex phase steel
- flat steel product consists of (in% by weight)
- % S respective S-content, where% S can also be "0".
- the constituents of the microstructure of a flat steel product according to the invention specified in area% are determined by light microscopy in a manner known per se. For this purpose, cross sections are considered. In practice, the following can then be used to determine the area proportions of the respective structural phases "bainite”, “ferrite”, “martensite” and “cementite”, for example:
- the transverse cuts are made in each case at five positions across the width of the starting and ending of the flat steel product at the hot rolling direction
- Flat steel product corresponds and from an edge region which is located about 10 cm away from the right edge of the flat steel product.
- the cuts in core layer, at 1/3-sheet thickness and on both surfaces are examined.
- the sections are polished and etched with 1% HNO3 acid. In each situation, three shots are made with 1000x magnification.
- the evaluated image section is for example 46 pm x 34.5 pm. The results of all image sections determined on the samples are arithmetically averaged.
- the percentage of retained austenite stated in% by volume is determined by X-ray diffraction (X-ray diffraction "XRD") in accordance with DIN EN 13925.
- ISO 16630 2009 specified procedure taking into account the following conditions: A test stamp with a diameter of
- the test punch point angle is 60 °.
- Test template inside diameter is 40 mm.
- the test matrix radius is 5 mm.
- the hold-down diameter is 55 mm.
- the punching of the holes is done with a punching speed of 4 mm / s without
- the hold-down force when punching the holes is 50 +/- 5 MPa.
- the hold-down pressure between hold-down and test matrix applied during the hole widening test is without
- the stamp speed is 1 mm / s. It will
- Steel flat product has a yield strength Rp0.2 of at least 660 MPa, typically 660-830 MPa, a tensile strength Rm of at least 760 MPa and an elongation at break A80 of at least 10% (in each case determined according to DIN EN ISO 6893-1: 2014), without a pronounced
- Notch impact values corresponding to a type II AK-T curve of at least 27J at test temperatures down to -80 ° C are notched impact values corresponding to a type II AK-T curve of at least 27J at test temperatures down to -80 ° C (so that its
- Toughness and characterized by the high hole expansion values edge tear resistance are maintained even at low temperatures.
- microstructure of a flat steel product according to the invention consists of at least 80 area% of bainite, with a completely bainitic structure in the technical sense with respect to the desired
- Microstructure constituents in particular also the proportions of ferrite and martensite, optimally as low as possible.
- the invention provides that the ferrite content in the structure of the flat steel product according to the invention is to be kept low, at least below 15 area%, in particular below 10 area% or, optimally, below 5 area%, should lie.
- the martensite content in the microstructure is one
- steel flat product according to the invention less than 15 area%, in particular less than 10 area% or, optimally, it is below 5 area%.
- the invention is based on the finding that the total amount of bainite in the microstructure of the flat steel product according to the invention and the nature of the bainite are of particular importance with regard to the desired optimized coordination of the mechanical properties, in particular the high hole expansion values, of a flat steel product according to the invention achieved, has a special meaning.
- bainite is a non-lamellar microstructure
- Austenite grain boundaries From the starting point, ferritic plates, so-called “sub-units”, grow into the austenite, which consist of disperse-rich ferritic bainite with a maximum of 0.03% by weight of dissolved C. These build up in orientation of the austenite grain almost parallel to one another and form so-called “sheaves”, ie “bundles” or “packages.” The sub-units are only separated from each other by small-angle grain boundaries on which carbides may also be present. The sheaves, on the other hand, continue to grow within the austenite grain until they meet an obstacle or one another therefore numerous sheaves within a former austenite grain, which have many large-angle grain boundaries with an angle> 45 ° to each other. The largest possible number of large-angle grain boundaries between the sheaves is advantageous for achieving good edge crack resistance, as these are obstacles to the formation and propagation of
- Microcracks serve.
- Electron backscatter diffraction can determine. Generally, it can be assumed that the number of sheaves is decreasing
- Austenite grain boundary increases, i. the Scheaves are smaller and thus the structure is finer.
- a pronounced yield strength with so-called Lüders stretching is lacking in a flat steel product according to the invention due to its bainitic structure. Because of the predominantly bainitic microstructure of a flat steel product according to the invention, the mean free path of the dislocations of approximately twice the sheaf width can not build up an interaction in the form of a dislocation front in which the dislocations and the foreign atoms are formed by the formation of so-called "cotrell clouds". influence each other dynamically and would lead to said Lüders strain. Due to the lack of a pronounced yield strength is an optimal
- contents of carbon "C" of 0.01-0.1% by weight ensure that bainite contents of at least 80 area% are present in the microstructure of the steel according to the invention.
- these C contents ensure sufficient bainite strength. At least 0.01% by weight of C is required to form carbides and carbonitrides in a thermomechanical rolling in the presence of suitable carbide and carbonitride. Likewise, with C contents of at least 0.01% by weight in the steel according to the invention, the formation of pre-eutectoid ferrite in the course of thermomechanical rolling can be avoided.
- the positive effects of the presence of C in the steel according to the invention can be used particularly reliably if the C content is at least 0.04% by weight. Contents of more than 0.1 wt .-% C, however, would lead to a drastic decrease in toughness and, consequently, to a poorer processability of the steel.
- Silicon "Si" is contained in the complex phase steel of the present invention at levels of 0.1-0.45 wt% to retard carbide formation. Due to in consequence of the presence of Si in the inventive
- Si contents of at least 0.1 wt .-%, optimally at least 0.2 wt .-%, required. At levels above 0.45% by weight of Si, there would be a risk of segregation near the surface. These segregations would not only cause surface defects and reduce the weldability, but also the suitability of products made of steel according to the invention, in particular flat steel products, such as sheets or strips, for coating with a metallic protective layer,
- a Zn-based protective layer for example by hot dip coating or electrolytic coating
- the Si content can be limited to at most 0.3 wt .-%.
- Manganese "Mn” is contained in the complex phase steel according to the invention in contents of 1 - 2.5 wt .-%. Mn causes a strong
- MnS Conversion kinetics of austenite to ferrite and thus contributes to the lowering of the bainite start temperature.
- a low bainite start temperature has an effect favorable to the thermodynamic rolling out.
- Mn contributes to the setting of as technically unavoidable
- Contamination existing levels of sulfur at, if there are no sufficient amounts of other for the setting of S inventively provided elements, such as Ti, in the respective composite according to the invention steel alloy are present.
- the setting of S can avoid hot cracks.
- Mn can be used in the composite steel according to the invention in particular when the Mn content is at least 1.7% by weight.
- too high Mn contents would entail the risk of segregation, which could lead to inhomogeneities in the distribution of the properties of the steel material according to the invention.
- too high Mn contents would make it difficult to produce and transform the steel according to the invention.
- These negative effects can be avoided with particular certainty that the Mn content of the steel according to the invention is limited to at most 1.9% by weight.
- Aluminum "AI” in contents of 0,005 - 0,05 Gew. -% is used in the production of the steel according to invention for the deoxidation.
- Al contents of at least 0.02 wt .-% may be advantageous. Too high Al contents, however, would reduce the castability of the steel.
- Chromium "Cr” retards the pre-eutectic in a dissolved form
- the steel of a flat steel product according to the invention contains Cr in contents of 0.5-1% by weight.
- the positive effects of Cr can be used with particular certainty that the Cr content of the steel according to the invention is at least 0.6% by weight, in particular at least 0.65% by weight. Cr contents of at least 0.69 wt .-% have been found to be particularly advantageous. Cr contents of up to 0.8% by weight are particularly effective.
- Mo also delays all phase transformation operations. This delay can go so far that there is a spatial separation of the ferrite-bainite phase regions in the ZTU diagram. At the same time, Mo lowers the
- Bainite start temperature ie the temperature at which bainite formation begins. Mo also prevents the border segregation of other elements (eg phosphorus). In order to use these effects also in the steel according to the invention, the Mo content is at least 0.05% by weight, in particular at least 0.1% by weight. In the prior art, the positive effects of Mo for setting the respectively required high mechanical properties, such as an optimized
- Niobium "Nb” has comparable effects in the steel according to the invention as Mo. Nb is by forming fine precipitates one of
- Nb positively influences the recrystallization and thermomechanical rolling conditions.
- a content of at least 0.01 wt .-% Nb is required, with contents of at least 0.045 wt .-% have proven to be particularly advantageous.
- Nb contents of more than 0.1% by weight should be avoided because Nb contents above this limit would lead to the formation of coarser carbides and to a reduction in weldability.
- the effect of Nb in the steel according to the invention can be used particularly effectively if the Nb content is reduced to max. 0.06 wt.% Is limited. Practical experiments have shown that at Nb contents of 0.045-0.06% by weight and at
- Titanium "Ti” also forms fine carbides or carbonitrides, which cause a strong increase in strength. Contains for this purpose
- Efficiency in this regard can be achieved by limiting the Ti content to at most 0.13% by weight.
- the Ti content and the N content of a steel according to the invention interact.
- inital TiN forms whose presence also improves the mechanical properties
- Carbon equivalent which is low, regardless of which of the methods known in the art it is calculated, is low.
- One of the most common methods for calculating the carbon equivalent is specified in the Steel-Iron-Material-Sheet SEW 088 Beiblatt 1: 1993-10. The hereafter intended for flat steel products according to the invention
- Carbon equivalent CET is regularly at values of not more than 0.45%, preferably at values of not more than 0.30%.
- the titanium nitrides effectively counteract significant grain coarsening and at the same time act as nuclei for crystal formation within the melt.
- the size of initially formed TiN particles is particularly dependent on the Ti: N ratio.
- the larger the value of the Ti / N ratio the more finely divided TiN particles are precipitated from a temperature of about 1300 ° C in the steel solidification, since all N atoms with Ti atoms can rapidly form a compound. Due to the fine distribution and small initial size of the TiN precipitates, excessive growth of the particles is prevented, which could otherwise occur as a result of Ostwald ripening between 1300 - 1 00 ° C during slab cooling and Ofenacre.
- the ratio of Ti divided by the Ti content and the N content% N can be% Ti /% N
- Nitrogen "N” is contained in the steel of the present invention at levels of 0.001-0.009% by weight to permit the formation of nitrides and carbonitrides. This effect can be achieved particularly reliably at N contents of at least 0.003% by weight. At the same time, the N content is max. 0.009 wt .-% in the steel according to the invention so limited that coarse Ti nitrides are largely avoided. To achieve this, the N content can be reduced to max. 0.006 wt .-% be limited.
- Sulfur "S” and phosphorus "P” are among the generally undesirable impurity constituents of a steel according to the invention, but in the course of melting they are technically unavoidably introduced into the steel.
- S forms the ductile compound MnS with Mn. This phase extends in the rolling direction during hot rolling and has a strong negative effect on the edge crack sensitivity due to its low strength compared to other phases. That's why the sulfur content should be
- TiS titanium sulfide
- T14C2S2 C titanium carbosulfide
- % Ti> (48/14)% N + (48/32)% S are, moreover, the Ti content% Ti, the N content% N and the S content% S of a steel according to the invention in relation to each other, that a sufficient formation of nucleation sites for the bainitic transformation by TiN and an optimized fineshness after welding is ensured.
- Nb content% Nb, the C content% C, N content% N and the S content% S of a steel according to the invention are coordinated so that an optimized Feinkömmaschine by the formation of a sufficient number of nucleation sites and an optimized Strength through the formation of Nb (C, N) taking into account the previously occurring setting of N by Ti. This can be expressed through the relationship
- Copper "Cu” also passes in the course of steel production as a rule unavoidable accompanying element in the steel according to the invention.
- the presence of higher levels of Cu would only contribute to a small extent to the increase in strength and would also have a negative impact on the formability of the steel. To the therefore predominantly negative
- the Cu content in the steel according to the invention to at most 0.1 wt .-%, in particular at most 0.06 wt .-%, limited.
- Magnesium "Mg” in the steel according to the invention also constitutes an accompanying element that inevitably enters the steel in the course of steel production.
- Mg can be used for deoxidizing in the production of a steel according to the invention.
- Mg forms with O and S fine oxides or sulfides, which can have a favorable effect on the ductility of the steel in the region of the heat-affected zone surrounding the respective weld during welding, by reducing the grain growth.
- the Mg content of a steel according to the invention is limited to max. 0.0005% by weight
- the content of oxygen "0" of a steel according to the invention is limited to max. 0.01 wt .-% limited to avoid the formation of coarse oxides, which would bring the risk of embrittlement of the steel.
- One or more elements from the group "Ni, B, V, Ca, Zr, Ta, W, REM, Co" may optionally be added to the steel according to the invention to achieve certain effects.
- the following specifications apply to the contents of the respectively optionally available alloying elements of this group:
- Nickel “Ni” may be present at levels of up to 1% by weight. Ni increases the strength of the steel. At the same time, Ni contributes to the improvement of low-temperature toughness (eg Charpy DIN EN ISO 148: 2011 impact test). Furthermore, the presence of Ni improves the
- Ni is only added as needed if a further enhancement of this property is desired. From a cost-benefit point of view, Ni contents of max. 0.3 wt .-% as particularly appropriate.
- Boron “B” can optionally be added to the steel according to the invention to retard the bainitic transformation and to promote the formation of needle-like structures in the structure of the steel according to the invention.
- B effects this enhancement of the conversion delays (ferrite-bainite and bainite-martensite).
- the steel according to the invention in the time-temperature transformation diagram (“ZTU diagram") has a very well-defined bainite region, which results in the cooling of the steel with comparatively low and widely varied cooling rates of For example, 5 - 50 ° C / s can be achieved.
- Nb Nb
- Negative effects of the presence of B, as well as the risk of grain boundary segregation, can be avoided by reducing the B content to max. 0.005 wt .-%, in particular 0.003 wt .-%, wherein the positive effects of the presence of B at levels of at least 0.0015 wt .-% can be safely used.
- Vanadium "V” may also optionally be added to a steel according to the invention to obtain fine V carbides or V carbonitrides in the microstructure of the steel and, as discussed above, in combination with B to form a distinctly exposed bainite region in the ZTU diagram promote. These positive effects can be safely used if at least 0.06 wt .-% V contained in the steel. Negative effects of the presence of V, such as the formation of V in
- V content in the alloyed steel according to the invention is limited to at most 0.3 wt .-%, in particular at most 0.15 wt .-%.
- Ca may be selectively present in the steel of the present invention at levels of 0.0005-0.005 weight percent to facilitate molding of non-metallic inclusions (predominantly sulfides, eg, MnS) which, if present, could increase edge crack sensitivity to effect.
- Ca is an inexpensive element for deoxidizing if particularly low oxygen contents are to be set in order to reliably avoid, for example, the formation of harmful Al oxides in the steel according to the invention.
- Ca can contribute to the setting of S present in the steel. Ca makes up together With Al spherical calcium-aluminum oxides and thereby integrates sulfur on the surface of the calcium-aluminum oxides with a.
- Zirconium "Zr”, tantalum “Ta” or tungsten “W” can optionally also be added to the steel according to the invention in order to promote the formation of a fine-grained microstructure by forming carbides or carbonitrides.
- the contents of Zr, Ta or W contents in a steel according to the invention are set such that from a cost-benefit point of view and with regard to possibly negative effects of the presence of too large contents, such as an impairment of the cold workability of the steel according to the invention the sum of the contents of Zr, Ta and W is at most 2% by weight.
- Rare earth metals "REM” can be added to the steel of the present invention at levels of 0.0005-0.05% by weight
- nonmetallic inclusions predominantly sulfides, e.g., MnS
- REM can contribute to grain refining.
- Levels of REM above about 0.05% by weight should be avoided since such high levels may entail the risk of clogging and thus adversely affect the castability of the steel.
- the invention is therefore based on the idea that only low levels of molybdenum are to be used, but that a complete substitution of Mo is not expedient. Therefore, a steel according to the invention contains an obligatory constituent of 0.05-0.1 wt.% Mo.
- contents of Cr and Nb are present at a very low carbon content, in order to achieve the advantageous effect of higher Mo known from the prior art To substitute levels.
- the combination according to the invention of the C, Mo, Cr and Nb contents achieves optimized precipitation behavior.
- the carbides are finer, retard thereby retard the re-crystallization of austenite even more during thermomechanical rolling and thereby contribute particularly strong to the structural refinement of the bainite obtained in the flat steel product.
- Alloying elements C, Si, Mn, Ni, Cr and Mo can determine the hardness of the steel flat product according to the invention in the microstructure while at the same time taking into account the hardness setting
- Cooling rates are specifically influenced.
- the central goal is to set the hardness of the phase components so that they do not deviate too much from one another.
- HvM 127 + 949% C + 27% Si + 11% Mn + 8% Ni + 16% Cr + 21 * ln dT / dt, and the theoretical hardness HvF of the structure of the flat steel product
- the ratio (Hv - HvB) / Hv describes the difference in hardness between the theoretical total hardness and the bainite hardness as dominating phase and as such is an indication of the homogeneity of the hardness distribution in the structure of a flat steel product according to the invention
- the bainitic phase dominating the steel flat product according to the invention ie, the smaller the deviation between the hardness Hv and the hardness HvB, the better the behavior of a flat steel product according to the invention in hole widening.
- the same purpose may be served if, in the presence of ferrite in the structure of the flat steel product for those already mentioned above
- the ratio (HvB - HvF) / HvF describes the difference between the theoretical hardness HvB of the structure of an inventive
- Phase boundaries can have.
- Steel according to the invention are coordinated so that the calculated according to formula (3) theoretical hardness HvB of the structure of In the case of bainites containing flat steel products, the amount of theoretical hardness of the ferrite contained in the structure of the steel may not exceed 35% of the theoretical hardness calculated in accordance with formula (6).
- the risk of microcracks arising from phases in the structure between which differences in strength exist may be minimized out.
- By limiting the deviation of the theoretical hardnesses HvB and HvF in the manner according to the invention by suitably coordinating the contents of the alloy constituents, it is possible to ensure an optimized distribution of properties in the flat steel product according to the invention, also with regard to the hole expansion behavior.
- % Nb respective Nb content
- % N respective N content
- % S respective S-content, where% S can also be "0"; b) pouring the melt into a precursor; c) heating the precursor to a 1100-300 ° C amount
- the initial rolling temperature WAT of the precursor at the start of hot rolling is 1000-1250 ° C and the final rolling temperature WET of the finish hot-rolled strip is 800-950 ° C, and
- the hot rolling is carried out in a temperature range RLT-RST with a decrease ratio d0 / d1 of at least 1.5
- thermomechanical hot rolling process carried out as operating step d) before the cooling phase in which the phase transformation takes place.
- Thermomechanical rolling is here to produce as many nucleation sites as possible as a starting point for the crystal formation just before the phase transformation. For this, a recrystallization of the austenite during rolling above the Ac3 temperature of the steel must be suppressed.
- this first step in the sense of a conventional pre-rolling can be carried out under consideration of the conditions mentioned here.
- the first rolling step may also comprise more than one hot rolling pass. It is important that in the course of the first rolling step or pre-rolling the recrystallization is still complete and should not be hindered.
- the subsequent rolling passes in the hot-rolled finishing section are then carried out in such a way that the recrystallization is steadily more strongly inhibited. This happens predominantly by precipitations of the added alloying elements, which exert a direct effect on the recrystallization boundaries.
- the RLT Recrystallization Limit Temperature
- the RST Recrystallization Limit Temperature
- RLT and RST are always above the Ac3 temperature of the steel, with the RST being the lowest temperature to start the pancaking process of the austenite grains. Between the RLT and RST temperature is about 30%
- Tnr non-recrystallization temperature
- Tnr is meant the temperature at which a complete static recrystallization is largely suppressed and only a fraction of 30% can recrystallize. This is required to create a pancake structure
- the invention stipulates that the acceptance ratio d0 / d1 defined as the quotient of the initial thickness d0 and the final thickness d1 should amount to at least 1.5. Optimized pancake structures are obtained when the decrease ratio d0 / d1 at the Tnr temperature is about 2.
- thermomechanical rolling when the thickness decrease achieved over the entire temperature range RLT - RST, in which the recrystallization is avoided, results in a decrease ratio d0 / d1 of more than 6.
- thermo - mechanical rolling in the temperature range RLT - RST it has proved to be expedient if the difference WAT - WET between the hot rolling start temperature WAT and the
- Hot rolling end temperature WET is more than 150 ° C, in particular at least 155 ° C.
- the cooling rate of the cooling between the end of the hot rolling and the beginning of the hasp should be at least 15 K / s, in particular higher than 15 K / s, and preferably more than 25 K / s, in particular more than 40 K / s.
- the specifications according to the invention within an available intensive cooling time of typically ten Seconds to achieve a complete bainitic transformation to form a fine texture.
- Nb one of the most effective elements for the recrystallization delay Nb is its ability to form fine precipitates in high temperature ranges. By deliberately adding Nb, it is therefore possible to influence the illustrated temperature limits and in particular the position of the Tnr. At the same time, Nb delays very effectively the phase transformation (so-called solute drag effect) through the formation of precipitates.
- the carbon saturation of bainitic ferrite is 0.02-0.025%, which means that stoichiometrically, the carbon for the
- claimed alloy spans the carbide formers is.
- the reel temperature HT is at least 350 ° C. lower
- Coiler temperature values would lead to an undesirably increased martensite content in the microstructure of the resulting hot-rolled steel flat product.
- the reel temperature is limited to 600 ° C or less, because higher
- Affect hole widening properties It is therefore desirable to have as uniform a bainitic structure as possible.
- Reel temperature HT readily throughout the invention be selected range, with reel temperatures of 350 - 550 ° C have proven particularly useful here.
- Hot-dip coating applied metallic protective coating Zn-based it may be expedient to adjust the Si content of the steel constituting the flat steel product in the manner already explained above.
- the molten steel A - M indicated in Table 1 have been melted, of which the melts D - G are alloyed according to the invention, whereas the melts A - C and H - M are not according to the invention.
- the slabs are after thorough heating in the temperature range of 1000 - 1300 ° C with a hot rolling start temperature WAT in a
- Hot strips undergo a thermomechanical rolling, in which they over a temperature range RLT - RST with a
- Total decrease ratio d0 / d1gesges have been deformed, wherein at the non-recrystallization temperature Tnr in each case a decrease ratio d0 / d1 Tnr has been observed.
- the hot rolling was finished with a hot rolling end temperature WET.
- the hot tapes with this temperature WET coming out of the hot rolling stand are with a cooling rate t8 / 5 on the respective
- % Mo respective Mo content of the steel calculated for a 3 mm thick sheet, the decrease ratio d0 / d1ges, the decrease ratio d0 / d1Tnr, the cooling rate t8 / 5, and the coiling temperature HT are indicated.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP2017051141 | 2017-01-20 | ||
PCT/EP2018/050963 WO2018134186A1 (de) | 2017-01-20 | 2018-01-16 | Warmgewalztes stahlflachprodukt bestehend aus einem komplexphasenstahl mit überwiegend bainitischem gefüge und verfahren zur herstellung eines solchen stahlflachprodukts |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3571324A1 true EP3571324A1 (de) | 2019-11-27 |
EP3571324B1 EP3571324B1 (de) | 2021-11-03 |
Family
ID=57860869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18702129.0A Active EP3571324B1 (de) | 2017-01-20 | 2018-01-16 | Warmgewalztes stahlflachprodukt bestehend aus einem komplexphasenstahl mit überwiegend bainitischem gefüge und verfahren zur herstellung eines solchen stahlflachprodukts |
Country Status (9)
Country | Link |
---|---|
US (1) | US11220721B2 (de) |
EP (1) | EP3571324B1 (de) |
JP (1) | JP7216002B2 (de) |
KR (1) | KR102500776B1 (de) |
CN (1) | CN110291215B (de) |
CA (1) | CA3051157A1 (de) |
ES (1) | ES2906276T3 (de) |
MX (1) | MX2019008649A (de) |
WO (1) | WO2018134186A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112575267A (zh) * | 2019-09-27 | 2021-03-30 | 宝山钢铁股份有限公司 | 一种高扩孔复相钢及其制造方法 |
BR112022011738A2 (pt) * | 2019-12-20 | 2022-08-30 | Tata Steel Ijmuiden Bv | Tira de aço laminada a quente de alta resistência que tem alta taxa de expansão de furos |
CN113122769B (zh) * | 2019-12-31 | 2022-06-28 | 宝山钢铁股份有限公司 | 低硅低碳当量吉帕级复相钢板/钢带及其制造方法 |
CN111411295B (zh) * | 2020-03-24 | 2021-06-15 | 首钢集团有限公司 | 一种多相钢构件及其制备方法、应用 |
WO2021213647A1 (de) * | 2020-04-22 | 2021-10-28 | Thyssenkrupp Steel Europe Ag | Warmgewalztes stahlflachprodukt und verfahren zu seiner herstellung |
CN111500940B (zh) * | 2020-06-08 | 2020-10-16 | 南京工程学院 | 具有抑制摩擦火花特性的合金钢锻造制动盘及其制造方法 |
CN114107797A (zh) * | 2020-08-31 | 2022-03-01 | 宝山钢铁股份有限公司 | 一种980MPa级贝氏体析出强化型高扩孔钢及其制造方法 |
EP3964591A1 (de) * | 2020-09-07 | 2022-03-09 | ThyssenKrupp Steel Europe AG | Warmgewalztes stahlflachprodukt und verfahren zur herstellung eines warmgewalzten stahlflachprodukts |
EP4234742A1 (de) * | 2021-01-12 | 2023-08-30 | Nippon Steel Corporation | Warmgewalztes stahlblech |
CN113481436A (zh) * | 2021-06-29 | 2021-10-08 | 鞍钢股份有限公司 | 一种800MPa级热轧复相钢及其生产方法 |
CN115110004B (zh) * | 2022-07-20 | 2023-10-24 | 武汉科技大学 | 一种超高冲击韧性中碳贝氏体钢及其热处理方法 |
CN116219279B (zh) * | 2022-12-23 | 2024-04-16 | 鞍钢股份有限公司 | 一种高强度高韧性核反应堆安全壳用钢及其制造方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4114521B2 (ja) * | 2002-12-04 | 2008-07-09 | Jfeスチール株式会社 | 成形性に優れる超高強度冷延鋼板およびその製造方法 |
JP2004232708A (ja) | 2003-01-29 | 2004-08-19 | Toyo Tire & Rubber Co Ltd | 液体封入式防振装置 |
TWI248977B (en) | 2003-06-26 | 2006-02-11 | Nippon Steel Corp | High-strength hot-rolled steel sheet excellent in shape fixability and method of producing the same |
US8038809B2 (en) | 2005-03-28 | 2011-10-18 | Kobe Steel, Ltd. | High strength hot rolled steel sheet excellent in bore expanding workability and method for production thereof |
JP3889765B2 (ja) * | 2005-03-28 | 2007-03-07 | 株式会社神戸製鋼所 | 穴拡げ加工性に優れた高強度熱延鋼板およびその製造方法 |
JP5194878B2 (ja) | 2007-04-13 | 2013-05-08 | Jfeスチール株式会社 | 加工性および溶接性に優れる高強度溶融亜鉛めっき鋼板およびその製造方法 |
JP4978741B2 (ja) * | 2010-05-31 | 2012-07-18 | Jfeスチール株式会社 | 伸びフランジ性および耐疲労特性に優れた高強度熱延鋼板およびその製造方法 |
JP5812115B2 (ja) * | 2011-12-27 | 2015-11-11 | Jfeスチール株式会社 | 高張力熱延鋼板及びその製造方法 |
EP2690183B1 (de) * | 2012-07-27 | 2017-06-28 | ThyssenKrupp Steel Europe AG | Warmgewalztes Stahlflachprodukt und Verfahren zu seiner Herstellung |
DE102013009232A1 (de) | 2013-05-28 | 2014-12-04 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung eines Bauteils durch Warmumformen eines Vorproduktes aus Stahl |
PL3305935T3 (pl) * | 2014-03-25 | 2019-11-29 | Thyssenkrupp Steel Europe Ag | Płaski produkt stalowy o wysokiej wytrzymałości i zastosowanie płaskiego produktu stalowego o wysokiej wytrzymałości |
WO2016005780A1 (fr) * | 2014-07-11 | 2016-01-14 | Arcelormittal Investigación Y Desarrollo Sl | Tôle d'acier laminée à chaud et procédé de fabrication associé |
DE102014017274A1 (de) * | 2014-11-18 | 2016-05-19 | Salzgitter Flachstahl Gmbh | Höchstfester lufthärtender Mehrphasenstahl mit hervorragenden Verarbeitungseigenschaften und Verfahren zur Herstellung eines Bandes aus diesem Stahl |
KR101630975B1 (ko) * | 2014-12-05 | 2016-06-16 | 주식회사 포스코 | 구멍 확장성이 우수한 고항복비형 고강도 냉연강판 및 그 제조방법 |
JP6252692B2 (ja) * | 2015-07-27 | 2017-12-27 | Jfeスチール株式会社 | 高強度熱延鋼板およびその製造方法 |
CN108913991B (zh) * | 2018-06-20 | 2020-07-03 | 武汉钢铁有限公司 | 具有良好扩孔性能980MPa级冷轧复相钢及其制备方法 |
-
2018
- 2018-01-16 MX MX2019008649A patent/MX2019008649A/es unknown
- 2018-01-16 KR KR1020197023249A patent/KR102500776B1/ko active IP Right Grant
- 2018-01-16 ES ES18702129T patent/ES2906276T3/es active Active
- 2018-01-16 CN CN201880007977.2A patent/CN110291215B/zh active Active
- 2018-01-16 US US16/479,315 patent/US11220721B2/en active Active
- 2018-01-16 EP EP18702129.0A patent/EP3571324B1/de active Active
- 2018-01-16 WO PCT/EP2018/050963 patent/WO2018134186A1/de unknown
- 2018-01-16 CA CA3051157A patent/CA3051157A1/en active Pending
- 2018-01-16 JP JP2019534381A patent/JP7216002B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2020507007A (ja) | 2020-03-05 |
JP7216002B2 (ja) | 2023-01-31 |
US11220721B2 (en) | 2022-01-11 |
KR20190110562A (ko) | 2019-09-30 |
CN110291215A (zh) | 2019-09-27 |
US20190338384A1 (en) | 2019-11-07 |
KR102500776B1 (ko) | 2023-02-17 |
CA3051157A1 (en) | 2018-07-26 |
WO2018134186A1 (de) | 2018-07-26 |
CN110291215B (zh) | 2022-03-29 |
MX2019008649A (es) | 2019-12-16 |
ES2906276T3 (es) | 2022-04-18 |
EP3571324B1 (de) | 2021-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3571324B1 (de) | Warmgewalztes stahlflachprodukt bestehend aus einem komplexphasenstahl mit überwiegend bainitischem gefüge und verfahren zur herstellung eines solchen stahlflachprodukts | |
EP3305935B1 (de) | Hochfestes stahlflachprodukt und verwendung eines hochfesten stahlflachprodukts | |
DE60301588T2 (de) | Hochfestes Stahlblech und hochfestes Stahlrohr mit sehr guter Verformbarkeit und Verfahren zu dessen Herstellung | |
DE112008000562B4 (de) | Stahlplatte mit geringer Heißrissanfälligkeit und einer Streckgrenze von 800 MPa sowie Verfahren zu deren Herstellung | |
EP2855717B1 (de) | Stahlflachprodukt und verfahren zur herstellung eines stahlflachprodukts | |
EP2690183B1 (de) | Warmgewalztes Stahlflachprodukt und Verfahren zu seiner Herstellung | |
EP1807542A1 (de) | Höherfestes, twip-eigenschaften aufweisendes stahlband oder -blech und verfahren zu dessen herstellung mittels "direct strip casting " | |
EP2905348B1 (de) | Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts | |
EP3332046B1 (de) | Hochfester aluminiumhaltiger manganstahl, ein verfahren zur herstellung eines stahlflachprodukts aus diesem stahl und hiernach hergestelltes stahlflachprodukt | |
DE60318277T2 (de) | Stahlrohr mit einem niedrigem Streckgrenze/Zugfestigkeit-Verhältnis | |
WO2014016421A1 (de) | Kaltgewalztes stahlflachprodukt und verfahren zu seiner herstellung | |
WO2015024903A1 (de) | Verfahren zum herstellen eines stahlbauteils | |
DE112006003553B9 (de) | Dicke Stahlplatte für eine Schweißkonstruktion mit ausgezeichneter Festigkeit und Zähigkeit in einem Zentralbereich der Dicke und geringen Eigenschaftsänderungen durch ihre Dicke und Produktionsverfahren dafür | |
EP3847284B1 (de) | Warmgewalztes stahlflachprodukt und verfahren zu seiner herstellung | |
WO2020201352A1 (de) | Warmgewalztes stahlflachprodukt und verfahren zu seiner herstellung | |
WO2022184580A1 (de) | Kaltgewalztes stahlflachprodukt und verfahren zu seiner herstellung | |
EP3964591A1 (de) | Warmgewalztes stahlflachprodukt und verfahren zur herstellung eines warmgewalzten stahlflachprodukts | |
WO2017211952A1 (de) | Verfahren zur herstellung eines kaltgewalzten stahlbandes mit trip-eigenschften aus einem hochfesten, manganhaltigen stahl | |
WO2020239676A1 (de) | WARMGEWALZTES STAHLFLACHPRODUKT MIT OPTIMIERTER SCHWEIßEIGNUNG UND VERFAHREN ZUR HERSTELLUNG EINES SOLCHEN STAHLFLACHPRODUKTS | |
WO2021063746A1 (de) | Verfahren zur herstellung eines stahlproduktes sowie ein entsprechendes stahlprodukt | |
WO2020187419A1 (de) | Verfahren zur herstellung eines warmgewalzten stahlflachproduktes mit unterschiedlichen eigenschaften, ein entsprechend warmgewalztes stahlflachprodukt sowie eine entsprechende verwendung | |
WO2024046913A1 (de) | Verfahren zur herstellung eines kaltgewalzten stahlflachprodukts | |
EP4301885A1 (de) | Stahlflachprodukt, verfahren zu seiner herstellung und verwendung eines solchen stahlflachprodukts | |
WO2023025635A1 (de) | Kaltgewalztes stahlflachprodukt und verfahren zu seiner herstellung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190617 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20200629 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20210602 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THYSSENKRUPP AG Owner name: THYSSENKRUPP STEEL EUROPE AG Owner name: THYSSENKRUPP HOHENLIMBURG GMBH |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1444003 Country of ref document: AT Kind code of ref document: T Effective date: 20211115 Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502018007675 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2906276 Country of ref document: ES Kind code of ref document: T3 Effective date: 20220418 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220303 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220303 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220203 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220204 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502018007675 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220131 |
|
26N | No opposition filed |
Effective date: 20220804 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220203 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220116 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220116 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220203 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230125 Year of fee payment: 6 Ref country code: ES Payment date: 20230224 Year of fee payment: 6 Ref country code: CH Payment date: 20230126 Year of fee payment: 6 Ref country code: AT Payment date: 20230125 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20230124 Year of fee payment: 6 Ref country code: IT Payment date: 20230126 Year of fee payment: 6 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230519 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20240124 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20240222 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20240125 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211103 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240123 Year of fee payment: 7 Ref country code: CH Payment date: 20240202 Year of fee payment: 7 |