EP4206336A1 - Tôle forte et procédé de traitement thermomécanique d'une matière de départ destiné à la fabrication d'une tôle forte - Google Patents
Tôle forte et procédé de traitement thermomécanique d'une matière de départ destiné à la fabrication d'une tôle forte Download PDFInfo
- Publication number
- EP4206336A1 EP4206336A1 EP21218235.6A EP21218235A EP4206336A1 EP 4206336 A1 EP4206336 A1 EP 4206336A1 EP 21218235 A EP21218235 A EP 21218235A EP 4206336 A1 EP4206336 A1 EP 4206336A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- rolling
- thickness
- cooling rate
- treatment method
- 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.)
- Withdrawn
Links
- 230000000930 thermomechanical effect Effects 0.000 title claims abstract description 19
- 238000003672 processing method Methods 0.000 title 1
- 239000002994 raw material Substances 0.000 title 1
- 238000001816 cooling Methods 0.000 claims abstract description 64
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000007858 starting material Substances 0.000 claims abstract description 18
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000011572 manganese Substances 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 8
- 239000011651 chromium Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 239000010955 niobium Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000010791 quenching Methods 0.000 description 7
- 230000000171 quenching effect Effects 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Images
Classifications
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- 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
- 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
- C21D8/0221—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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0242—Flattening; Dressing; Flexing
-
- 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
- C22C38/04—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
Definitions
- the invention relates to a thermomechanical treatment method for producing heavy plate from a steel alloy.
- thermomechanical treatment process In order to increase the toughness, especially the low-temperature toughness, of a heavy plate made of a steel alloy, WO2011/079341A2 a thermomechanical treatment process is known in which the heavy plate is hot-rolled in several stages and between two hot-rolling passes is accelerated cooled to below the Ar3 temperature and inductively heated to above the Ac3 temperature.
- thermomechanical treatment method for the production of heavy plate with which a low-stress heavy plate with high toughness values can be created in a reproducible manner.
- the invention solves the problem set by the features of claim 1.
- This optimized, comparatively high yield strength ratio R p0.2 /R m which can be between 0.70 and 0.90, for example, offers the advantage that the formability of the material increases as the yield strength ratio increases, but it should not be too high so that a certain "safety cushion" can still be given in the event of overloading with regard to material overload or cracks.
- the structure of the steel material can be further positively influenced by the accelerated cooling and the proportion of bainitic structures can be increased.
- the heavy plate according to the invention with a steel alloy each having in % by weight 0.01 to 0.20 carbon (C), 0.5 to 2.50 manganese (Mn), 0.05 to 0.80 silicon (Si), 0.01 to 0.20 aluminum (Al), ⁇ 0.05 phosphorus (P), ⁇ 0.01 Sulfur (S) and the remainder iron (Fe) and impurities unavoidable due to production, for example with a maximum of 0.05% by weight each and a maximum of 0.15% by weight in total have a high yield strength ratio R p0.2 /R m .
- this steel alloy can be used in % by weight individually or in combination from the group: 0 to 1.5 Chromium (Cr) 0 to 1.0 Molybdenum (Mo) 0 to 1.0 copper (Cu) 0 to 5.0 Nickel (Ni) 0 to 0.30 vanadium (V) 0 to 0.20 Titanium (Ti) 0 to 0.20 niobium (Nb) 0 to 0.005 boron (B) 0 to 0.015 nitrogen (N) 0 to 0.01 Calcium (Ca) exhibit.
- Chromium (Cr) 0 to 1.0 Molybdenum (Mo) 0 to 1.0 copper (Cu) 0 to 5.0 Nickel (Ni) 0 to 0.30 vanadium (V) 0 to 0.20 Titanium (Ti) 0 to 0.20 niobium (Nb) 0 to 0.005 boron (B) 0 to 0.015 nitrogen (N) 0 to 0.01 Calcium (Ca) exhibit.
- the steel alloy in each case in % by weight) 0.02 to 0.1 carbon (C), 1.0 to 2.0 manganese (Mn), 0.1 to 0.80 silicon (Si), 0.010 to 0.15 aluminum (Al), ⁇ 0.050 Phosphorus (P) and ⁇ 0.010 Sulfur (S) on. This can further improve the mechanical properties.
- the steel alloy can be used individually or in combination from the group (each in % by weight): 0 to 0.75 copper (Cu) 0 to 3.0 Nickel (Ni) 0 to 0.20 vanadium (V) 0 to 0.003 boron (B) exhibit.
- T1 the desired structural formation in the steel alloy according to the invention can still be achieved in the process be produced more reproducibly in order to achieve a high yield point ratio R p0.2 /R m with high toughness.
- the ratio of the first cooling rate KR1 to the second cooling rate KR2 is at least 2:1, this can enable the desired microstructure, consisting of ferrite, bainite and possibly martensite, to be produced more reproducibly and thus a high yield strength ratio R p0.2 /R m at high to achieve toughness.
- the ratio of the first cooling rate KR1 to the second cooling rate KR2 is at least 3:1.
- the microstructure can be shifted further in the direction of martensite, which can be significantly influenced by the KR1 - therefore the value of the tensile strength can be higher, the higher the cooling rate ratio was selected.
- the yield point on the other hand, can be negatively influenced by this.
- the cooling rate ratio can be selected depending on the customer's requirements for the mechanical values of the desired product.
- the second cooling rate (KR2) is ⁇ 5° C./s, in particular ⁇ 3° C./s, the structure formation and the mechanical properties are influenced comparatively little.
- End forming is preferably carried out to a thickness of the heavy plate in the range from 8 to 150 mm (millimeters), in particular in the range from 25 to 120 mm.
- the straightening preferably takes place at a straightening temperature within a temperature range from the first temperature (T1) to the first temperature (T1) minus 100°C.
- the invention solves the problem set by the features of claim 11.
- the heavy plate can have a yield point ratio R p0.2 /R m of ⁇ 0.9 as a result of the thermomechanical treatment process.
- the yield point ratio R p0.2 /R m ⁇ 0.90.
- the heavy plate has a yield point ratio R p0.2 /R m of >0.70.
- the heavy plate preferably has a thickness in the range from 8 to 150 mm, in particular in the range from 25 to 120 mm.
- the respective cooling rate (KR1, KR2) or heating rate from the initial temperature to the final temperature is an average value, namely a cooling rate or heating rate averaged over the thickness of the starting material from the initial temperature to the final temperature.
- Both heavy plates A, B have the same steel alloy 0.060% by weight (C) carbon, 0.34% by weight (Si) silicon, 1.63% by weight (Mn) manganese, 0.012% by weight (P) phosphorus, 0.001% by weight (S) sulphur, 0.04% by weight (Al) aluminum, 0.40% by weight (Cr) chromium, 0.01% by weight (Ni) nickel, 0.20% by weight (Mo) molybdenum, 0.035% by weight (Nb) niobium, 0.014% by weight (Ti)titanium, 0.0003% by weight (B) boron, 0.0045% by weight (N) nitrogen, 0.0018% by weight (Ca) calcium and the remainder iron (Fe) and impurities that are unavoidable as a result of production, each with a maximum of 0.05% by weight and a maximum of
- first temperature profile 1 and the second temperature profile 2 differ at the end of the process of multi-stage cooling 3 to room temperature RT.
- the previous procedural steps are the same.
- the starting material, namely the slab, of the respective heavy plate A, B is heated 4 to above the Ac3 temperature, namely 1100° C. (degrees Celsius), for example with a slab heating device.
- the starting material is then partially formed by first rolling W1.
- quenching preferably water quenching
- the starting material is cooled from the first final rolling temperature, which is above Ac3, to below the Ar3 temperature, namely - as in 1 recognizable - the primary material is cooled or quenched to below Ar1 temperature.
- the starting material leaves the second rolling W2 with a second final rolling temperature EW2 ⁇ Ar3, namely 830 °C.
- EW2 ⁇ Ar3 a second final rolling temperature
- other heating sources are also conceivable, for example sources with radiant heat. This rapid heating, be it inductive or with radiant heat etc., takes place at a minimum of 12°C/min.
- This second roll W2 which can also be referred to as end rolls, is followed by two different multi-stage coolings 3 to room temperature RT (which is usually between 0 and 60 degrees Celsius, for example 20 degrees Celsius in these processes).
- a first stage 7a of cooling 3 after finish rolling W2 the starting material of heavy plate A is cooled or quenched from the second finish rolling temperature to a temperature T, namely 100° C., in an accelerated manner by water quenching at 20° C./s. After that, the starting material is straightened at this temperature T. The quenching is followed by cooling at 0.1° C./s in still air at ambient temperature to room temperature RT as the subsequent second stage 7b of the multi-stage cooling 3 .
- the multi-stage cooling 3 according to the invention can be seen from the starting material of the heavy plate B.
- the starting material is accelerated at a first cooling rate KR1, namely 20 °C/s, by water quenching from the second final rolling temperature EW2 to a first temperature T1, namely 420 °C (degrees Celsius). cooled or quenched.
- the starting material is warm-straightened with a degree of plasticization of 50%.
- the starting material has a temperature of around 420 °C (degrees Celsius) when straightened.
- a certain cooling before the start of straightening cannot be ruled out.
- hot straightening takes place at 320 degrees Celsius on the primary material.
- the primary material is cooled to room temperature (RT) at a second cooling rate KR2, namely 0.1° C./s in still air at ambient temperature.
- RT room temperature
- KR2 second cooling rate
- accelerated cooling can be understood to mean faster cooling than cooling at room temperature and still air, which is also often referred to as quenching.
- a block or a billet is also conceivable as the starting material.
- first and/or second rolling can consist of one or more part-rolls with possibly several part-rolling steps (passes), which is possible, for example, by reversing rolling.
- Heavy plate B therefore has higher toughness values compared to heavy plate A and a desired yield strength ratio R p0.2 /R m in the range from 0.70 to 0.90.
- figure 2 shows two different alloy compositions according to the invention, the elements of which are each given in % by weight.
- the remainder of these alloys is iron (Fe) and impurities that are unavoidable due to production, each with a maximum of 0.05% by weight and a maximum of 0.15% by weight in total.
- Alloy 1 has slightly higher levels of carbon and chromium and can therefore achieve higher mechanical properties. Depending on customer requirements, however, a lower tensile strength can also be desired, as alloy 2 shows. Heavy plates with these alloys 1 and 2 were produced.
- figure 4 shows schematically the optimal range of the first temperature T1, referred to as the cooling stop temperature, and provides corresponding explanations.
- the customer needs a heavy plate with a specific range of tensile strength (R m ) and yield point R p0.2 (0.2% proof stress) - these should each be within a certain range in order to to process the product accordingly.
- the inventors have recognized that by suitably setting the cooling stop temperature (T1), the mechanical properties can be influenced and, in particular, the yield point ratio (STV), namely R p0.2 /R m , can be optimized. If the first temperature T1 is too low, for example below 250° C., the tensile strength becomes too high and/or the yield point becomes too low. On the other hand, if the first temperature T1 is too high, the tensile strength falls again or the yield point may even become too high, as a result of which the yield point ratio becomes comparatively unfavorable.
- An optimal range for T1 must therefore be selected, which according to the invention is in the range from 250°C to 500°C, in particular in the range from 300°C to 450°C.
- the mechanical properties can be further influenced by suitable setting of the straightening temperature—and in particular the yield point ratio (STV), namely R p0.2 /R m , can be further optimized.
- STV yield point ratio
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21218235.6A EP4206336A1 (fr) | 2021-12-29 | 2021-12-29 | Tôle forte et procédé de traitement thermomécanique d'une matière de départ destiné à la fabrication d'une tôle forte |
PCT/EP2022/088053 WO2023126507A1 (fr) | 2021-12-29 | 2022-12-29 | Plaque lourde et procédé de manipulation thermomécanique pour un matériau de départ pour la production d'une plaque lourde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21218235.6A EP4206336A1 (fr) | 2021-12-29 | 2021-12-29 | Tôle forte et procédé de traitement thermomécanique d'une matière de départ destiné à la fabrication d'une tôle forte |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4206336A1 true EP4206336A1 (fr) | 2023-07-05 |
Family
ID=80123361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21218235.6A Withdrawn EP4206336A1 (fr) | 2021-12-29 | 2021-12-29 | Tôle forte et procédé de traitement thermomécanique d'une matière de départ destiné à la fabrication d'une tôle forte |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4206336A1 (fr) |
WO (1) | WO2023126507A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6320414A (ja) * | 1986-07-14 | 1988-01-28 | Sumitomo Metal Ind Ltd | 高靭性高張力鋼板の製造法 |
EP2340897A1 (fr) * | 2009-12-23 | 2011-07-06 | Voestalpine Grobblech GmbH | Procédé de traitement thermomécanique pour tôles épaisses |
JP2012207237A (ja) * | 2011-03-29 | 2012-10-25 | Jfe Steel Corp | 多層盛溶接部の靭性に優れた降伏強さ500MPa級厚鋼板およびその製造方法 |
JP2013139610A (ja) * | 2012-01-05 | 2013-07-18 | Jfe Steel Corp | 引張強さ780MPa以上の高張力厚鋼板およびその製造方法 |
JP2015218360A (ja) * | 2014-05-16 | 2015-12-07 | 新日鐵住金株式会社 | 圧延鋼材及びその製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2860738B1 (fr) | 2003-10-13 | 2006-02-03 | Vai Clecim | Procede d'augmentation de la precision du controle de la trajectoire du produit dans une machine a planer a rouleaux imbriques et installation de planage permettant la mise en oeuvre du procede. |
CN103320692B (zh) * | 2013-06-19 | 2016-07-06 | 宝山钢铁股份有限公司 | 超高韧性、优良焊接性ht550钢板及其制造方法 |
KR102307903B1 (ko) * | 2019-11-04 | 2021-09-30 | 주식회사 포스코 | 저온 충격인성이 우수한 고강도 강재 및 그 제조방법 |
CN113737088B (zh) * | 2020-05-28 | 2022-10-21 | 宝山钢铁股份有限公司 | 低屈强比、高韧性及高焊接性800MPa级钢板及其制造方法 |
EP3964592A1 (fr) | 2020-09-07 | 2022-03-09 | ThyssenKrupp Steel Europe AG | Produit en acier plat laminé à chaud et procédé de fabrication d'un produit en acier plat laminé à chaud |
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2021
- 2021-12-29 EP EP21218235.6A patent/EP4206336A1/fr not_active Withdrawn
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2022
- 2022-12-29 WO PCT/EP2022/088053 patent/WO2023126507A1/fr unknown
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