EP1069192A2 - Procédé de fabrication d' une bande en acier par laminage flexible - Google Patents
Procédé de fabrication d' une bande en acier par laminage flexible Download PDFInfo
- Publication number
- EP1069192A2 EP1069192A2 EP00111354A EP00111354A EP1069192A2 EP 1069192 A2 EP1069192 A2 EP 1069192A2 EP 00111354 A EP00111354 A EP 00111354A EP 00111354 A EP00111354 A EP 00111354A EP 1069192 A2 EP1069192 A2 EP 1069192A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- strip
- flexible rolling
- temperature
- steel
- 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- Withdrawn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
- 238000005096 rolling process Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000001953 recrystallisation Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000000137 annealing Methods 0.000 abstract description 5
- 238000005098 hot rolling Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 5
- 238000005097 cold rolling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
-
- 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
- C21D8/0231—Warm 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
- C21D2221/00—Treating localised areas of an article
Definitions
- components are also made of metal in other areas used that of the expected later operating load dimensioned differently in some areas are, in particular are of different thicknesses.
- Such Components are obtained through various shaping Processes such as bending, deep drawing or stretch drawing Boards that have different thicknesses in some areas have received.
- the boards in turn can be obtained either Welding sheets of different thicknesses or from Belts by flexible rolling in the longitudinal direction have sections of different thickness. While at out different thickness of sheet metal welded together the weld seam is a potential weak point for the forms another shaping process is the Further processing, especially by deep and Stretch drawing, from blanks made by flexible Rolls made of rolls are produced because of the different achieved in flexible rolling Forming degrees in different thicknesses problematic. In the limit case, the formability in the more deformed thinner areas so far be exhausted, that for the desired Finished product required deep drawing or stretch drawing can no longer be carried out.
- the invention has for its object a method to make a steel band through flexible Rolling at elevated strip temperature to create that after flexible rolling in all areas without subsequent recrystallization annealing and without warm up to one for dynamic Recrystallization sufficiently high temperature sufficient formability for subsequent Forming, such as deep drawing, has.
- This object is achieved in a method for making a steel band with in Sections of different thickness in the longitudinal direction flexible rolling at an increased strip temperature solved that for the tape a steel with a austenitic structure is used, which in Weight percent maximum 0.05% carbon, 2% - 4% Aluminum, 2% - 4% silicon and 20% - 50% manganese and / or contains nickel and / or molybdenum, and further solved in that the flexible rolling at a Belt temperature below the recrystallization temperature of this steel and above 300 ° C.
- the strip is hot rolled, but at a comparatively low temperature.
- the slightly elevated temperature compared to cold rolling enables rolling at a relatively high rolling speed at relatively low rolling forces or high degrees of forming, without this leading to a section-wise too high strengthening with extensive exhaustion of the forming capacity.
- a recrystallizing annealing after the flexible rolling is therefore unnecessary.
- Such a flexible Half-hot rolling "with the above-mentioned properties of the strip is made possible by the special steel quality.
- This half-warm flexible rolling of the strip of the special steel quality can reduce the rolling resistance by a factor of 2-5 compared to cold rolling.
- the flexibly rolled strip is cooled to a temperature of ⁇ 500 ° C. accelerated immediately after the flexible rolling with a cooling rate of> 10 K / sec.
- Flexible rolling is preferably carried out at one Belt temperature between 500 ° C and 900 ° C.
- the strip In flexible rolling, the strip should be in every section reduced in thickness by at least 3%. There sections of different thickness are desired that the thickness reduction in the thinner Sections is much larger. Preferably that is Band in the later thicker areas by a maximum of 15% and in the later thinner areas by 20% - 50% in the Reduced thickness. Thickness reduction also in the The purpose of thicker areas is that of a reel belt pulled through the nip is not uncontrolled to run through the nip.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19933113 | 1999-07-15 | ||
| DE1999133113 DE19933113C1 (de) | 1999-07-15 | 1999-07-15 | Verfahren zum Herstellen eines Bandes aus Stahl durch flexibles Walzen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1069192A2 true EP1069192A2 (fr) | 2001-01-17 |
| EP1069192A3 EP1069192A3 (fr) | 2004-06-02 |
Family
ID=7914849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00111354A Withdrawn EP1069192A3 (fr) | 1999-07-15 | 2000-05-26 | Procédé de fabrication d' une bande en acier par laminage flexible |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1069192A3 (fr) |
| DE (1) | DE19933113C1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152065A3 (fr) * | 2000-05-02 | 2004-01-02 | Klaus-Peter Dr. Erkel | Procédé de fabrication d'acier inoxydable austénitique à haute résistance mécanique |
| CN106170567A (zh) * | 2014-01-17 | 2016-11-30 | 艾普伦 | 具有厚度变化的带材的制造方法以及相应的带材 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10201009C1 (de) * | 2002-01-11 | 2003-10-16 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung eines Produkts aus Stahl und danach hergestelltes Produkt |
| DE10259230B4 (de) * | 2002-12-17 | 2005-04-14 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen eines Stahlprodukts |
| DE102004054444B3 (de) * | 2004-08-10 | 2006-01-19 | Daimlerchrysler Ag | Verfahren zur Herstellung von Stahlbauteilen mit höchster Festigkeit und Plastizität |
| DE102008005158A1 (de) | 2008-01-18 | 2009-07-23 | Robert Bosch Gmbh | Bauelement, insbesondere eine Kraftfahrzeugkomponente, aus einem höherfesten austenitischen Stahl mit TRIP-, TWIP- und/oder SIP-Effekt |
| DE102015112889A1 (de) * | 2015-08-05 | 2017-02-09 | Salzgitter Flachstahl Gmbh | Hochfester manganhaltiger Stahl, Verwendung des Stahls für flexibel gewalzte Stahlflachprodukte und Herstellverfahren nebst Stahlflachprodukt hierzu |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5024899B2 (fr) * | 1971-09-18 | 1975-08-19 | ||
| JPS59109466A (ja) * | 1982-12-16 | 1984-06-25 | Nissan Motor Co Ltd | 主として曲げ荷重を受ける部位に用いられる自動車用メンバの製造方法 |
| DE19704300B4 (de) * | 1997-02-06 | 2008-07-10 | Benteler Ag | Verfahren zur Herstellung von Platinen mit unterschiedlichen Dicken |
-
1999
- 1999-07-15 DE DE1999133113 patent/DE19933113C1/de not_active Expired - Fee Related
-
2000
- 2000-05-26 EP EP00111354A patent/EP1069192A3/fr not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152065A3 (fr) * | 2000-05-02 | 2004-01-02 | Klaus-Peter Dr. Erkel | Procédé de fabrication d'acier inoxydable austénitique à haute résistance mécanique |
| CN106170567A (zh) * | 2014-01-17 | 2016-11-30 | 艾普伦 | 具有厚度变化的带材的制造方法以及相应的带材 |
| US10526680B2 (en) | 2014-01-17 | 2020-01-07 | Aperam | Method for manufacturing a strip having a variable thickness and associated strip |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1069192A3 (fr) | 2004-06-02 |
| DE19933113C1 (de) | 2000-09-07 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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| RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7C 21D 8/02 A |
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| REG | Reference to a national code |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
Effective date: 20041203 |