EP2964792A2 - Procédé servant à produire un produit plat en acier laminé à froid apte à l'emboutissage et à l'étirage, produit plat en acier et utilisation d'un produit plat en acier de ce type - Google Patents
Procédé servant à produire un produit plat en acier laminé à froid apte à l'emboutissage et à l'étirage, produit plat en acier et utilisation d'un produit plat en acier de ce typeInfo
- Publication number
- EP2964792A2 EP2964792A2 EP14708856.1A EP14708856A EP2964792A2 EP 2964792 A2 EP2964792 A2 EP 2964792A2 EP 14708856 A EP14708856 A EP 14708856A EP 2964792 A2 EP2964792 A2 EP 2964792A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cold
- rolled
- flat steel
- steel
- hot
- 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 84
- 239000010959 steel Substances 0.000 title claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000010409 ironing Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 239000000161 steel melt Substances 0.000 claims abstract description 7
- 238000009489 vacuum treatment Methods 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 238000005097 cold rolling Methods 0.000 claims description 16
- 238000005098 hot rolling Methods 0.000 claims description 14
- 238000009847 ladle furnace Methods 0.000 claims description 9
- 239000010960 cold rolled steel Substances 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 235000013361 beverage Nutrition 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 239000000443 aerosol Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 description 42
- 238000005096 rolling process Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 239000000155 melt Substances 0.000 description 11
- 238000009749 continuous casting Methods 0.000 description 10
- 238000003856 thermoforming Methods 0.000 description 10
- 239000011572 manganese Substances 0.000 description 9
- 239000011575 calcium Substances 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 6
- 239000002243 precursor Substances 0.000 description 5
- 239000005028 tinplate Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- -1 calcium aluminates Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0436—Cold rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/041—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing involving a particular fabrication or treatment of ingot or slab
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0426—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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
Definitions
- the invention relates to a method for producing a cold-rolled, up to 0.5 mm thick flat steel product for deep-drawing and ironing applications. Moreover, the invention relates to a flat steel product produced according to such a method and to an advantageous use of a corresponding flat steel product.
- Hot strip production are coordinated so that a continuous sequence of casting and the
- Hot strip which is intended in particular for the production of tinplate with a typical thickness of at most 0.5 mm, in particular at most 0.251 mm, could therefore not be produced in the past on a casting-rolling plant. Tinplates of this thickness will be
- Continuous casting in the slab or thin slab also does not crush residual calcium aluminate inclusions during hot rolling, but retain their size.
- Macroscopic Ca-aluminate inclusions can therefore be used in cold rolling or forming processes, for example, shell defects on the
- Molten steel is poured into a slab or cast strip containing (by weight) ⁇ 0.003% C, 0.5-0.35% Mn, ⁇ 0.025% P, ⁇ 0.020% S, ⁇ 0.004% Si, ⁇ 0.002 AI, ⁇ 0.004% N, in total ⁇ 0.1% Cr, Cu, Ni, Sn and Mo, ⁇ 0.004% N, each ⁇ 0.005% Nb, Ti, Zr and V, ⁇ 0.0030% B and balance Fe and unavoidable impurities.
- the steel melt according to the known method after its melting is first subjected to a vacuum treatment and then a ladle furnace treatment.
- the oxygen activity of the molten steel for continuous casting or strip casting should be as low as possible in order to avoid pore formation in the cast product and casting defects.
- Adjustment of the oxygen content or the oxygen activity takes place by a targeted addition of aluminum in an amount which, depending on the result of monitoring the current
- Oxygen activity of the melt is determined according to the target that the oxygen content of the melt at the end of the pan treatment is below 100 ppm.
- Step a) produces a steel melt containing (in% by weight) up to 0.008% C, up to 0.005% Al, up to 0.043% Si, 0.15-0.5% Mn, up to 0.02% P , up to 0.03% S, up to 0.020% N and each optionally up to 0.03% Ti and up to 0.03% Nb, the remainder containing iron and unavoidable impurities, the unavoidable
- the S-contents of the melt according to the invention are typically in the range of 0.005-0.03 wt%.
- the Al content of the melt is typically at least 0.001% by weight.
- Optimal Al contents of the molten steel ready for casting are in the range of 0.001-0.002% by weight.
- the molten steel is subjected to a secondary metallurgical treatment during production, omitting a Ca treatment, which, in addition to a conventional vacuum treatment, produces a ladle furnace.
- Treatment includes. In the ladle furnace treatment, the molten steel
- Mn content% Mn and Fe content% Fe is% Mn +% Fe ⁇ 15 wt. -%, in particular ⁇ 9 wt .-%.
- the measures provided for in the production of the molten steel according to the invention are based on the finding that the ladle slag must be kept well fluid for a good absorption of non-metallic inclusions in the melt. This can be done by a conventional
- Vacuum treatment in a RH or DH plant can not be achieved.
- the ladle furnace treatment according to the invention however, the ladle slag can be intensively liquefied via the heating with electrodes. As a result, it is very well suited to absorb non-metallic inclusions rising to the bath surface and thus further improve the degree of purity of the molten steel after the vacuum treatment.
- the inventive method is also that in the vacuum and the subsequent ladle furnace treatment slag is kept in contact with the molten steel, in which a certain oxygen potential is set before the vacuum treatment.
- This Oxygen potential "a 0 -Slag" of the ladle slag must correspond to the required oxygen activity "a 0 -Melt"
- Oxygen activity a 0 deposit is too high, it results in the unfavorable situation that, due to the tendency to
- Ladle slag can be used.
- Ladle slag to less than 15 wt .-%, in particular ⁇
- the molten steel produced in the manner according to the invention is continuously cast into a strand in step b), from which one or more thin slabs are then separated in a conventional manner, which are subsequently separated in a continuous process sequence
- Precursor is then in step c) in
- the respective precursor can be brought to a temperature of 1000 - 1250 ° C optimal for the further process sequence before hot rolling. This can
- Hot rolling itself will optimally with a
- Hot rolling start temperature which is in the range of 950 - 1200 ° C
- a hot rolling end temperature which is in the range of 800 - 950 ° C.
- Cold rolling may be preceded by a surface treatment which mechanically or chemically removes scale and other contaminants adhering to the hot strip in a conventional manner.
- the cold rolling itself can be one or more stages
- the first stage of cold rolling should be carried out with a degree of deformation of more than 85%, in particular more than 90%, and the second stage of cold rolling with a degree of deformation of 0.4-50%, in particular at least 1% , where degrees of deformation of 4 - 42% are particularly practical.
- the cold-rolled steel flat product according to the invention can be coated with a metallic protective layer.
- a metallic protective layer it may for example be an electrolytic
- Casting rolling process can be avoided by producing the flat steel products based on an alloy concept with minimized Al contents.
- low ⁇ l contents can be dispensed with a Ca treatment of the melt, so that the formation of the deformation properties interfering calcium aluminates is excluded.
- flat steel products produced according to the invention fulfill the highest demands on their formability. So they are suitable for all forming applications, for one according to ISO 11531 certain tension of less than 0.86 mm is required. In particular, are suitable
- flat steel products produced according to the invention are particularly suitable for the production of packaging for loose goods.
- These packages are typically cans and similar containers suitable for packaging
- flat steel products according to the invention can be used for the production of closures for such containers, bottle caps for closing bottles or spray cans.
- the flat steel product according to the invention leads to the
- the degree of purity is before the refining process, which may for example be in the form of the order of a metallic coating, such as a tinning or chrome plating, based on the number of non-metallic inclusions with an extent> 70 pm means
- Electromagnetic measurement method has been determined over the entire volume. The classification was based on the number of inclusions per m 2 according to the following conditions:
- very good rated samples can be used without restriction for all packaging steel applications.
- "Satisfactory” rated samples may be for certain, uncritical
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
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Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013102273.1A DE102013102273A1 (de) | 2013-03-07 | 2013-03-07 | Verfahren zum Erzeugen eines kaltgewalzten Stahlflachprodukts für Tiefzieh- und Abstreckziehanwendungen, Stahlflachprodukt und Verwendung eines solchen Stahlflachprodukts |
PCT/EP2014/054368 WO2014135645A2 (fr) | 2013-03-07 | 2014-03-06 | Procédé servant à produire un produit plat en acier laminé à froid apte à l'emboutissage et à l'étirage, produit plat en acier et utilisation d'un produit plat en acier de ce type |
Publications (2)
Publication Number | Publication Date |
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EP2964792A2 true EP2964792A2 (fr) | 2016-01-13 |
EP2964792B1 EP2964792B1 (fr) | 2017-05-03 |
Family
ID=50239620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14708856.1A Not-in-force EP2964792B1 (fr) | 2013-03-07 | 2014-03-06 | Procédé servant à produire un produit plat en acier laminé à froid apte à l'emboutissage et à l'étirage, produit plat en acier et utilisation d'un produit plat en acier de ce type |
Country Status (8)
Country | Link |
---|---|
US (1) | US10184159B2 (fr) |
EP (1) | EP2964792B1 (fr) |
CN (1) | CN105189790A (fr) |
CA (1) | CA2903936C (fr) |
DE (1) | DE102013102273A1 (fr) |
ES (1) | ES2636187T3 (fr) |
RU (1) | RU2661687C2 (fr) |
WO (1) | WO2014135645A2 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201205243D0 (en) | 2012-03-26 | 2012-05-09 | Kraft Foods R & D Inc | Packaging and method of opening |
GB2511559B (en) | 2013-03-07 | 2018-11-14 | Mondelez Uk R&D Ltd | Improved Packaging and Method of Forming Packaging |
GB2511560B (en) | 2013-03-07 | 2018-11-14 | Mondelez Uk R&D Ltd | Improved Packaging and Method of Forming Packaging |
JP5958630B2 (ja) * | 2014-10-10 | 2016-08-02 | Jfeスチール株式会社 | 王冠用鋼板およびその製造方法 |
NZ733727A (en) * | 2015-02-26 | 2018-08-31 | Jfe Steel Corp | Steel sheet for crown cap, method for producing steel sheet for crown cap, and crown cap |
KR102373161B1 (ko) * | 2017-05-10 | 2022-03-10 | 현대자동차주식회사 | 부식환경에서 내식성을 향상시킨 차량용 저합금 내식강과 그 제조방법 |
RU2689491C1 (ru) * | 2018-07-30 | 2019-05-28 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Способ производства тонких холоднокатаных полос для нанесения полимерного покрытия |
CN111349869B (zh) * | 2018-12-24 | 2021-10-22 | 宝山钢铁股份有限公司 | 一种高强度覆铝基板用钢及其制造方法 |
RU2758716C1 (ru) * | 2020-08-20 | 2021-11-01 | Публичное акционерное общество «Северсталь» (ПАО "Северсталь") | Способ производства горячекатаного проката из инструментальной стали |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2575827B2 (ja) * | 1988-07-18 | 1997-01-29 | 川崎製鉄株式会社 | 清浄度に優れた連続鋳造用極低炭素鋼の製造方法 |
FR2730942B1 (fr) * | 1995-02-24 | 1997-05-16 | Lorraine Laminage | Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede |
FR2767078B1 (fr) | 1997-08-07 | 1999-10-22 | Lorraine Laminage | Procede d'elaboration d'une tole mince en acier a ultra bas carbone pour la realisation de produits emboutis pour emballage et tole mince obtenue |
JP4013505B2 (ja) * | 2000-11-27 | 2007-11-28 | 住友金属工業株式会社 | 極低炭素薄鋼板とその製造方法 |
JP3630136B2 (ja) * | 2001-12-14 | 2005-03-16 | 住友金属工業株式会社 | 自動車用の極低炭素鋼の製造方法 |
JP4328124B2 (ja) * | 2003-04-24 | 2009-09-09 | 新日本製鐵株式会社 | 缶特性が著しく良好な極薄容器用鋼板およびその製造方法 |
JP4214036B2 (ja) * | 2003-11-05 | 2009-01-28 | 新日本製鐵株式会社 | 表面性状、成形性および加工性に優れた薄鋼板およびその製造方法 |
CN102575308A (zh) * | 2009-07-30 | 2012-07-11 | 塔塔钢铁艾默伊登有限责任公司 | 生产超低碳钢板坯、带材或片材的过程 |
CN101941021B (zh) * | 2010-08-13 | 2013-05-08 | 济南钢铁股份有限公司 | 一种基于asp工艺生产超深冲级冷轧钢板的方法 |
-
2013
- 2013-03-07 DE DE102013102273.1A patent/DE102013102273A1/de not_active Withdrawn
-
2014
- 2014-03-06 RU RU2015142506A patent/RU2661687C2/ru active
- 2014-03-06 CA CA2903936A patent/CA2903936C/fr not_active Expired - Fee Related
- 2014-03-06 US US14/772,788 patent/US10184159B2/en not_active Expired - Fee Related
- 2014-03-06 CN CN201480025895.2A patent/CN105189790A/zh active Pending
- 2014-03-06 WO PCT/EP2014/054368 patent/WO2014135645A2/fr active Application Filing
- 2014-03-06 ES ES14708856.1T patent/ES2636187T3/es active Active
- 2014-03-06 EP EP14708856.1A patent/EP2964792B1/fr not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
CN105189790A (zh) | 2015-12-23 |
RU2015142506A (ru) | 2017-04-12 |
US20160010172A1 (en) | 2016-01-14 |
EP2964792B1 (fr) | 2017-05-03 |
CA2903936C (fr) | 2018-04-17 |
WO2014135645A3 (fr) | 2015-03-26 |
RU2015142506A3 (fr) | 2018-03-07 |
US10184159B2 (en) | 2019-01-22 |
DE102013102273A1 (de) | 2014-09-25 |
RU2661687C2 (ru) | 2018-07-19 |
CA2903936A1 (fr) | 2014-09-12 |
ES2636187T3 (es) | 2017-10-05 |
WO2014135645A2 (fr) | 2014-09-12 |
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