DE102022124366A1 - Verfahren zur Herstellung eines warmgewalzten Stahlflachprodukts zum Einsatz in der Rohrfertigung - Google Patents
Verfahren zur Herstellung eines warmgewalzten Stahlflachprodukts zum Einsatz in der Rohrfertigung Download PDFInfo
- Publication number
- DE102022124366A1 DE102022124366A1 DE102022124366.4A DE102022124366A DE102022124366A1 DE 102022124366 A1 DE102022124366 A1 DE 102022124366A1 DE 102022124366 A DE102022124366 A DE 102022124366A DE 102022124366 A1 DE102022124366 A1 DE 102022124366A1
- Authority
- DE
- Germany
- Prior art keywords
- hot
- flat steel
- rolled flat
- temperature
- steel product
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 15
- 238000005096 rolling process Methods 0.000 claims description 53
- 238000001816 cooling Methods 0.000 claims description 26
- 229910052718 tin Inorganic materials 0.000 claims description 16
- 229910052720 vanadium Inorganic materials 0.000 claims description 15
- 238000005098 hot rolling Methods 0.000 claims description 12
- 229910052796 boron Inorganic materials 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000001953 recrystallisation Methods 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- 229910001563 bainite Inorganic materials 0.000 claims description 6
- 229910001562 pearlite Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000000047 product Substances 0.000 description 53
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 229910001567 cementite Inorganic materials 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000000399 optical microscopy Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007430 reference method Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
-
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C22C38/02—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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- 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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium 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
- C21D2211/002—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
- C21D2211/005—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
- C21D2211/009—Pearlite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022124366.4A DE102022124366A1 (de) | 2022-09-22 | 2022-09-22 | Verfahren zur Herstellung eines warmgewalzten Stahlflachprodukts zum Einsatz in der Rohrfertigung |
| PCT/EP2023/075277 WO2024061729A1 (fr) | 2022-09-22 | 2023-09-14 | Procédé de fabrication d'un produit plat en acier laminé à chaud destiné à être utilisé dans la fabrication de tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022124366.4A DE102022124366A1 (de) | 2022-09-22 | 2022-09-22 | Verfahren zur Herstellung eines warmgewalzten Stahlflachprodukts zum Einsatz in der Rohrfertigung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102022124366A1 true DE102022124366A1 (de) | 2024-03-28 |
Family
ID=88143909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102022124366.4A Pending DE102022124366A1 (de) | 2022-09-22 | 2022-09-22 | Verfahren zur Herstellung eines warmgewalzten Stahlflachprodukts zum Einsatz in der Rohrfertigung |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102022124366A1 (fr) |
| WO (1) | WO2024061729A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007030207A1 (de) | 2007-06-27 | 2009-01-02 | Benteler Automobiltechnik Gmbh | Verwendung einer hochfesten Stahllegierung zur Herstellung von Strahlrohren mit hoher Festigkeit und guter Umformbarkeit |
| US20110253267A1 (en) | 2001-07-13 | 2011-10-20 | Jfe Steel Corporation | High strength steel pipe of api x65 grade or higher and manufacturing method therefor |
| DE102013107010A1 (de) | 2013-07-03 | 2015-01-22 | Thyssenkrupp Steel Europe Ag | Anlage und Verfahren zum Warmwalzen von Stahlband |
| WO2016063513A1 (fr) | 2014-10-23 | 2016-04-28 | Ｊｆｅスチール株式会社 | Tuyau en acier soudé de haute résistance pour gonfleur de coussin gonflable de sécurité, et son procédé de fabrication |
| WO2016143270A1 (fr) | 2015-03-06 | 2016-09-15 | Ｊｆｅスチール株式会社 | Tuyau en acier soudé par résistance électrique à haute résistance et procédé de fabrication s'y rapportant |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5842725A (ja) * | 1981-09-04 | 1983-03-12 | Kobe Steel Ltd | 加工性のすぐれた高強度熱延鋼板の製造法 |
| BR112012004577A2 (pt) * | 2009-09-02 | 2016-04-05 | Nippon Steel Corp | chapa de aço para oleoduto de alta resistência e aço para uso em oleoduto de alta resistência com excelente tenacidade a baixa temperatura |
| JP6394812B2 (ja) * | 2016-03-31 | 2018-09-26 | Ｊｆｅスチール株式会社 | 薄鋼板およびめっき鋼板、並びに、熱延鋼板の製造方法、冷延フルハード鋼板の製造方法、熱処理板の製造方法、薄鋼板の製造方法およびめっき鋼板の製造方法 |
| JP6424908B2 (ja) * | 2017-02-06 | 2018-11-21 | Ｊｆｅスチール株式会社 | 溶融亜鉛めっき鋼板およびその製造方法 |
| JP6930297B2 (ja) * | 2017-08-31 | 2021-09-01 | 日本製鉄株式会社 | 熱延鋼板およびスプライン軸受ならびにそれらの製造方法 |
-
2022
- 2022-09-22 DE DE102022124366.4A patent/DE102022124366A1/de active Pending
-
2023
- 2023-09-14 WO PCT/EP2023/075277 patent/WO2024061729A1/fr unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110253267A1 (en) | 2001-07-13 | 2011-10-20 | Jfe Steel Corporation | High strength steel pipe of api x65 grade or higher and manufacturing method therefor |
| DE102007030207A1 (de) | 2007-06-27 | 2009-01-02 | Benteler Automobiltechnik Gmbh | Verwendung einer hochfesten Stahllegierung zur Herstellung von Strahlrohren mit hoher Festigkeit und guter Umformbarkeit |
| DE102013107010A1 (de) | 2013-07-03 | 2015-01-22 | Thyssenkrupp Steel Europe Ag | Anlage und Verfahren zum Warmwalzen von Stahlband |
| WO2016063513A1 (fr) | 2014-10-23 | 2016-04-28 | Ｊｆｅスチール株式会社 | Tuyau en acier soudé de haute résistance pour gonfleur de coussin gonflable de sécurité, et son procédé de fabrication |
| WO2016143270A1 (fr) | 2015-03-06 | 2016-09-15 | Ｊｆｅスチール株式会社 | Tuyau en acier soudé par résistance électrique à haute résistance et procédé de fabrication s'y rapportant |
Non-Patent Citations (1)
| Title |
|---|
| DIN EN ISO 6892-1:2017 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024061729A1 (fr) | 2024-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1573075B1 (fr) | Procede de fabrication d'un produit en acier | |
| EP2924140B1 (fr) | Procédé de génération d'un produit plat en acier haute résistance | |
| EP2710158B1 (fr) | Produit plat en acier hautement résistant et son procédé de fabrication | |
| DE60214086T2 (de) | Hochduktiles Stahlblech mit exzellenter Pressbarkeit und Härtbarkeit durch Verformungsalterung sowie Verfahren zu dessen Herstellung | |
| DE60121233T2 (de) | Hochfestes Kaltgewalztes Stahlblech mit hoch r-Wert, exzellenter Reckalterungseigenschaften und Alterungsbeständigkeit sowie Verfahren zur dessen Herstellung | |
| EP2855718B1 (fr) | Produit en acier plat et procédé de fabrication d'un produit en acier plat | |
| EP2690183B1 (fr) | Produit plat en acier laminé à chaud et son procédé de fabrication | |
| EP3535431B1 (fr) | Produit d'acier à teneur en manganèse intermédiaire pour application à basse température et son procédé de fabrication | |
| EP3504349B1 (fr) | Procédé de fabrication d'une bande d'acier à résistance très élevée présentant des propriétés améliorées lors du traitement ultérieur et une telle bande d'acier | |
| EP2905348B1 (fr) | Produit en acier plat de haute résistance avec une structure bainitique-martensitique et procédé de fabrication d'un tel produit acier plat | |
| EP3974554A1 (fr) | Produit plan en acier ayant une bonne résistance au vieillissement et son procédé de fabrication | |
| EP3512968B1 (fr) | Procédé pour fabriquer un produit plat en acier à partir d'un acier au manganèse et produit plat en acier résultant | |
| EP2009120B1 (fr) | Utilisation d'un alliage d'acier très solide destiné à la fabrication de tuyaux en acier très résistants et ayant une bonne déformabilité | |
| EP4301886A1 (fr) | Produit plat en acier laminé à froid et son procédé de production | |
| EP1453984B1 (fr) | Procede de production de feuillards ou de toles a chaud en acier microallie | |
| DE102016115618A1 (de) | Verfahren zur Herstellung eines höchstfesten Stahlbandes mit verbesserten Eigenschaften bei der Weiterverarbeitung und ein derartiges Stahlband | |
| WO2023025635A1 (fr) | Produit plat en acier laminé à froid et son procédé de production | |
| EP1396549B1 (fr) | Procédé pour la fabrication d'une bande d' acier exempt de perlite laminée à chaud et bande à chaud obtenue | |
| DE102018132901A1 (de) | Verfahren zur Herstellung von konventionell warmgewalzten Warmbanderzeugnissen | |
| EP3719147A1 (fr) | Produit en acier plat laminé à chaud et son procédé de fabrication | |
| DE102022124366A1 (de) | Verfahren zur Herstellung eines warmgewalzten Stahlflachprodukts zum Einsatz in der Rohrfertigung | |
| EP1396550A1 (fr) | Procédé pour la fabrication d' une bande à chaud | |
| EP1411140B1 (fr) | Procédé de fabrication de tôles ou de bandes d'acier laminées à froid ayant une excellente formabilité | |
| DE102018132816A1 (de) | Verfahren zur Herstellung von thermo-mechanisch hergestellten profilierten Warmbanderzeugnissen | |
| EP4139492A1 (fr) | Produit d'acier plat laminé à chaud et son procédé de fabrication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R012 | Request for examination validly filed | ||
| R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: C21D0008020000 Ipc: C22C0038040000 |