EP1069192A2 - Method of manufacturing a steel strip by flexible rolling - Google Patents
Method of manufacturing a steel strip by flexible rolling 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- Withdrawn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)
- Heat Treatment Of Sheet Steel (AREA)
- Metal Rolling (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zum Herstellen eines Bandes aus Stahl mit in Längsrichtung unterschiedlich dicken Abschnitten durch flexibles Walzen bei erhöhter Bandtemperatur. Um nach dem flexiblen Walzen ein Band mit einem in allen Bereichen noch für nachfolgende Umformungen, wie Tiefziehen, ausreichenden Umformvermögen zu haben, ohne daß das Band im Anschluß an das flexible Walzen einer Rekristallisationsglühung unterworfen wird oder beim Warmwalzen eine verhältnismäßig hohe Temperatur aufweisen muß, ist vorgesehen, daß für das Band eine besondere Stahlqualität verwendet wird und daß das Walzen bei einer Bandtemperatur unter der Rekristallisationstemperatur dieses Stahls und oberhalb von 300° C erfolgt.The invention relates to a method for producing a Band of steel with different in the longitudinal direction thick sections by flexible rolling with increased Strip temperature. To use a tape after flexible rolling one in all areas for subsequent ones Forming, such as deep drawing, sufficient formability to have without the band following the flexible Rolling is subjected to a recrystallization annealing or a relatively high temperature during hot rolling must have, it is provided that for the tape special steel quality is used and that the rolling at a strip temperature below that Recrystallization temperature of this steel and above of 300 ° C.
Description
Auf dem Gebiet des Karosseriebaues für Kraftfahrzeuge aber auch auf anderen Gebieten werden Bauteile aus Metall eingesetzt, die der erwarteten späteren Betriebsbelastung entsprechend bereichsweise unterschiedlich dimensioniert sind, insbesondere unterschiedlich dick sind. Solche Bauteile erhält man durch verschiedene formgebende Verfahren, wie Biegen, Tiefziehen oder Streckziehen aus Platinen, die bereichsweise eine unterschiedliche Dicke erhalten haben.In the field of body construction for motor vehicles but 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.
Die Platinen ihrerseits erhält man entweder durch Zusammenschweißen verschieden dicker Bleche oder aus Bändern, die durch flexibles Walzen in Längsrichtung unterschiedlich dicke Abschnitte haben. Während bei aus verschieden dicken Blechen zusammengeschweißten Platinen die Schweißnaht eine potentielle Schwachstelle für die weiteren formgebenden Verfahren bildet, ist die Weiterverarbeitung, insbesondere durch Tief- und Streckziehen, von Platinen, die aus durch flexibles Walzen hergestellten Bändern hergestellt werden, wegen der beim flexiblen Walzen erzielten unterschiedlichen Umformgrade in den verschieden dicken Bereichen problematisch. Im Grenzfall kann das Umformvermögen in den stärker verformten dünneren Bereichen bereits so weit erschöpft sein, daß das für das gewünschte Fertigerzeugnis erforderliche Tief- oder Streckziehen nicht mehr durchgeführt werden kann. 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.
Wegen dieser bekannten Probleme für dem flexiblen Walzen
folgende formgebende Verfahren ist es bekannt,
zusätzliche Maßnahmen zu ergreifen, um dem durch das
flexible Walzen erzeugten Band eine ausreichende
Verformungsfähigkeit für weitere formgebende Verfahren zu
erhalten oder zu geben. So ist es bekannt
(DE 33 43 709 A1; R. Kopp et al., 
Bei einem anderen bekannten Verfahren des flexiblen Walzens (DE 197 04 300 A1) erfolgt das Walzen bei erhöhter Bandtemperatur, vorzugsweise mit einer Bandtemperatur oberhalb der Rekristallisationstemperatur des metallischen Werkstoffes. Mit diesem Verfahren lassen sich relativ große Dickenreduzierungen bei verhältnismäßig kleinen Walzkräften mit verhältnismäßig großer Walzgeschwindigkeit erzielen, weil die Fließspannung des auf erhöhte Temperatur gebrachten metallischen Werkstoffes gegenüber der im kalten Zustand des Werkstoffes geringer ist. Nachteilig ist bei diesem Verfahren allerdings, daß das Band auf eine verhältnismäßig hohe Temperatur, vorzugsweise auf eine oberhalb der Rekristallisationstemperatur liegende Temperatur, gebracht werden muß, damit es während des flexiblen Walzens zu einer dynamischen Rekristallisation des Werkstoffgefüges kommt. Dadurch wird erreicht, daß die mechanischen Eigenschaften des Werkstoffes nach dem flexiblen Walzen in etwa denen vor dem flexiblen Walzen entsprechen und es nicht zu einer unerwünscht hohen Verfestigung des Werkstoffes mit einer praktischen Erschöpfung des Umformvermögens in den dünneren Bandabschnitten kommt. Nachteilig ist allerdings, daß das Band auf die verhältnismäßig hohe, die dynamische Rekristallisation gewährleistende Temperatur vor dem flexiblen Walzen gebracht werden muß.In another known method of flexible Rolling (DE 197 04 300 A1) is done with the rolling increased strip temperature, preferably with a Belt temperature above the recrystallization temperature of the metallic material. Leave with this procedure relatively large reductions in thickness relatively small rolling forces with relatively achieve high rolling speed because the Yield stress of the brought to elevated temperature metallic material compared to the cold state of the material is less. The disadvantage of this Procedure, however, that the tape on a relatively high temperature, preferably to a above the recrystallization temperature Temperature, must be brought so that it during the flexible rolling for dynamic recrystallization of the material structure comes. This ensures that the mechanical properties of the material after flexible rolling roughly the same as before flexible rolling correspond and it does not become an undesirably high Solidification of the material with a practical Exhaustion of the formability in the thinner Band sections comes. The disadvantage, however, is that Band on the relatively high, the dynamic Temperature before recrystallization flexible rollers must be brought.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen eines Bandes aus Stahl durch flexibles Walzen bei erhöhter Bandtemperatur zu schaffen, das nach dem flexiblen Walzen in allen Bereichen auch ohne anschließendes Rekristallisationsglühen und ohne vorheriges Erwärmen bis auf eine für eine dynamische Rekristallisation ausreichend hohe Temperatur ein ausreichendes Umformvermögen für nachfolgende Umformungen, wie Tiefziehen, hat.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.
Diese Aufgabe wird erfindungsgemäß bei einem Verfahren zum Herstellen eines Bandes aus Stahl mit in Längsrichtung unterschiedlich dicken Abschnitten durch flexibles Walzen bei erhöhter Bandtemperatur dadurch gelöst, daß für das Band ein Stahl mit einem austenitischen Gefüge verwendet wird, der in Gewichtsprozent maximal 0,05 % Kohlenstoff, 2 % - 4 % Aluminium, 2 % - 4 % Silizium und 20 % - 50 % Mangan und/oder Nickel und/oder Molybdän enthält, und weiter dadurch gelöst, daß das flexible Walzen bei einer Bandtemperatur unter der Rekristallisationstemperatur dieses Stahls und oberhalb von 300° C erfolgt.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.
Bei dem erfindungsgemäßen Verfahren wird das Band
warmgewalzt, allerdings bei einer vergleichsweise
niedrigen Temperatur. Die gegenüber dem Kaltwalzen leicht
erhöhte Temperatur ermöglicht ein Walzen mit
verhältnismäßig hoher Walzgeschwindigkeit bei
verhältnismäßig niedrigen Walzkräften beziehungsweise
hohen Umformgraden, ohne daß es dabei zu einer
abschnittsweise zu hohen Verfestigung mit einer
weitgehenden Erschöpfung des Umformvermögens kommt. Eine
rekristallisierende Glühung im Anschluß an das flexible
Walzen erübrigt sich deshalb. Ein solches flexibles
Die Einhaltung der Walztemperatur unterhalb der
Rekristallisationstemperatur des Stahls reicht für sich
allein aus, um es praktisch nicht zur Grobkornbildung
kommen zu lassen. Eine beschleunigte Abkühlung ist nicht
zwingend erforderlich, um das gewünschte ausreichende
Umformvermögen zu erhalten. Dennoch ist es vorteilhaft,
wenn entsprechend einer Ausgestaltung der Erfindung das
flexibel gewalzte Band unmittelbar nach dem flexiblen
Walzen mit einer Abkühlgeschwindigkeit von > 10 K/sec auf
eine Temperatur < 500° C beschleunigt abgekühlt wird. Die
damit verbundenen Vorteile bestehen darin, daß zum einen
Ausscheidungen, die eine negative Auswirkung auf die
Umformbarkeit des Stahls haben, unterbunden werden und
daß zum anderen die durch die vorangegangene Verformung
erzielte Verfestigung nahezu vollständig erhalten bleibt,
weil der Verfestigungszustand sozusagen
Vorzugsweise erfolgt das flexible Walzen bei einer Bandtemperatur zwischen 500° C und 900° C.Flexible rolling is preferably carried out at one Belt temperature between 500 ° C and 900 ° C.
Beim flexiblen Walzen sollte das Band in jedem Abschnitt in der Dicke um mindestens 3 % reduziert werden. Da unterschiedlich dicke Abschnitte gewünscht sind, bedeutet das, daß die Dickenreduzierung in den dünneren Abschnitten wesentlich größer ist. Vorzugsweise wird das Band in den später dickeren Bereichen um maximal 15 % und in den später dünneren Bereichen um 20 % - 50 % in der Dicke reduziert. Die Dickenreduzierung auch in den dickeren Bereichen hat zum Zweck, das von einer Haspel durch den Walzspalt gezogene Band nicht unkontrolliert durch den Walzspalt laufen zu lassen.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.
Mit dem erfindungsgemäßen Verfahren ist es möglich, hochfesten Stahl (≥ 300 N/mm2 Streckgrenze) mit vergleichsweise hohen Walzgeschwindigkeiten um 50 m/min und großen Umformgraden (15 % - 50 % Dickenabnahme) ohne Grobkornbildung flexibel zu walzen. Die dafür eingesetzten üblichen Anfangsbanddicken bei Karosserieblechen aus Stahl liegen im Bereich von 1 mm - 2,5 mm.With the method according to the invention it is possible to flexibly roll high-strength steel (≥ 300 N / mm 2 yield strength) with comparatively high rolling speeds around 50 m / min and large degrees of deformation (15% - 50% reduction in thickness) without coarse grain formation. The usual initial strip thicknesses used for steel body panels are in the range of 1 mm - 2.5 mm.
Claims (5)
dadurch gekennzeichnet, daß für das Band ein Stahl mit einem austenitischen Gefüge verwendet wird, der in Gewichtsprozent maximal 0,05 % Kohlenstoff, 2 % - 4 % Aluminium, 2 % - 4 % Silizium und 20 % - 50 % Mangan und/oder Nickel und/oder Molybdän enthält, und daß das flexible Walzen bei einer Bandtemperatur unter der Rekristallisationstemperatur dieses Stahls und oberhalb von 300° C erfolgt.Process for producing a steel strip with sections of different thicknesses in the longitudinal direction by flexible rolling at an increased strip temperature,
characterized in that a steel with an austenitic structure is used for the strip, in weight percent maximum 0.05% carbon, 2% - 4% aluminum, 2% - 4% silicon and 20% - 50% manganese and / or nickel and / or contains molybdenum, and that the flexible rolling takes place at a strip temperature below the recrystallization temperature of this steel and above 300 ° C.
dadurch gekennzeichnet, daß das flexible Walzen bei einer Bandtemperatur zwischen 500° C und 900° C erfolgt.Method according to claim 1,
characterized in that the flexible rolling takes place at a strip temperature between 500 ° C and 900 ° C.
dadurch gekennzeichnet, daß das Band nach dem flexiblen Walzen mit einer Abkühlgeschwindigkeit von > 10 K/sec auf eine Temperatur < 500° C beschleunigt abgekühlt wird.The method of claim 1 or 2,
characterized in that the strip is cooled to a temperature <500 ° C accelerated after the flexible rolling at a cooling rate of> 10 K / sec.
dadurch gekennzeichnet, daß beim flexiblen Walzen in jedem Abschnitt des Bandes dessen Dicke um mindestens 3 % reduziert wird. Method according to one of claims 1 to 3,
characterized in that the thickness of the flexible rolling is reduced by at least 3% in each section of the strip.
dadurch gekennzeichnet, daß das Band in den später dickeren Abschnitten um maximal 15 % und in den später dünneren Abschnitten um 20 % bis 50 % in der Dicke reduziert wird.Method according to claim 4,
characterized in that the band in the later thicker sections is reduced by a maximum of 15% and in the later thinner sections by 20% to 50% in thickness.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999133113 DE19933113C1 (en) | 1999-07-15 | 1999-07-15 | Variable thickness steel strip production by flexible warm rolling of an austenitic steel containing manganese, nickel and/or molybdenum for use in e.g. automobile bodywork production |
| DE19933113 | 1999-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1069192A2 true EP1069192A2 (en) | 2001-01-17 |
| EP1069192A3 EP1069192A3 (en) | 2004-06-02 |
Family
ID=7914849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00111354A Withdrawn EP1069192A3 (en) | 1999-07-15 | 2000-05-26 | Method of manufacturing a steel strip by flexible rolling |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1069192A3 (en) |
| DE (1) | DE19933113C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152065A3 (en) * | 2000-05-02 | 2004-01-02 | Klaus-Peter Dr. Erkel | Process for producing high strength austenitic stainless steel |
| CN106170567A (en) * | 2014-01-17 | 2016-11-30 | 艾普伦 | There is the manufacture method of the band of thickness change and corresponding band |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10201009C1 (en) * | 2002-01-11 | 2003-10-16 | Salzgitter Flachstahl Gmbh | Method of manufacturing a steel product and product made thereafter |
| DE10259230B4 (en) * | 2002-12-17 | 2005-04-14 | Thyssenkrupp Stahl Ag | Method for producing a steel product |
| DE102004054444B3 (en) * | 2004-08-10 | 2006-01-19 | Daimlerchrysler Ag | Method for making steel articles with high rigidity and plasticity comprises mechanical shaping of steel in which twinning induce plasticity or shearband induced plasticity is produced, to give increase in rigidity of at least 30 percent |
| DE102008005158A1 (en) | 2008-01-18 | 2009-07-23 | Robert Bosch Gmbh | Automotive fuel injection component for diesel or petrol engine is machined from austenitic steel having transformation induced plasticity |
| DE102015112889A1 (en) * | 2015-08-05 | 2017-02-09 | Salzgitter Flachstahl Gmbh | High-strength manganese-containing steel, use of the steel for flexibly rolled flat steel products and production methods together with flat steel product for this purpose |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5024899B2 (en) * | 1971-09-18 | 1975-08-19 | ||
| JPS59109466A (en) * | 1982-12-16 | 1984-06-25 | Nissan Motor Co Ltd | Method for manufacturing automotive members mainly used in parts that receive bending loads |
| DE19704300B4 (en) * | 1997-02-06 | 2008-07-10 | Benteler Ag | Method for producing boards with different thicknesses |
-
1999
- 1999-07-15 DE DE1999133113 patent/DE19933113C1/en not_active Expired - Fee Related
-
2000
- 2000-05-26 EP EP00111354A patent/EP1069192A3/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152065A3 (en) * | 2000-05-02 | 2004-01-02 | Klaus-Peter Dr. Erkel | Process for producing high strength austenitic stainless steel |
| CN106170567A (en) * | 2014-01-17 | 2016-11-30 | 艾普伦 | There is the manufacture method of the band of thickness change and corresponding band |
| 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 |
|---|---|
| DE19933113C1 (en) | 2000-09-07 |
| EP1069192A3 (en) | 2004-06-02 |
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