DE3407959A1 - Method for the continuous stretcher levelling of high-strength steel strip - Google Patents
Method for the continuous stretcher levelling of high-strength steel stripInfo
- Publication number
- DE3407959A1 DE3407959A1 DE19843407959 DE3407959A DE3407959A1 DE 3407959 A1 DE3407959 A1 DE 3407959A1 DE 19843407959 DE19843407959 DE 19843407959 DE 3407959 A DE3407959 A DE 3407959A DE 3407959 A1 DE3407959 A1 DE 3407959A1
- Authority
- DE
- Germany
- Prior art keywords
- strip
- stretcher
- straightening
- stretch
- levelling
- 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.)
- Ceased
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000005482 strain hardening Methods 0.000 abstract 1
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
Classifications
-
- 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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with 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
- C21D8/0205—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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
- B21B2045/006—Heating the product in vacuum or in inert atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
- C21D8/0252—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with application of tension
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)
- Straightening Metal Sheet-Like Bodies (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum kontinuierlichen Streck-The invention relates to a method for continuous stretching
richten von Stahlband durch definiertes Dehnen des Bandes zwischen Zuggerüsten einer Streckrichtanl age.straightening the steel strip by stretching the strip between Tensile scaffolding of a stretch straightening system.
Verfahren und Anlagen zum Streckrichten von Stahlbändern sind bekannt und dienen dazu, Fehler in der Planheit des Bandes durch Überstrecken des Materials im plastischen Bereich auszugleichen. In der Regel kommen bei durchlaufenden Bändern Zuggerüste zur Anwendung, in denen das Band um Umlenkrollen umgeführt wird, wobei zwischen den Umlenkrollen bzw. benachbarten Zuggerüsten unterschiedliche Drehzahlen bzw. Drehmomente eingestellt werden, die eine Zugkraft im Band bewirken. Bei entsprechend hoher Zugkraft wird dem Band eine bleibende Dehnung mitgeteilt, durch die die Bandformverbesserung hergestellt wird.Processes and systems for straightening steel strips are known and serve to eliminate errors in the flatness of the belt caused by overstretching the material to compensate in the plastic area. Usually come with continuous belts Tensile scaffolding for use in which the belt is guided around pulleys, whereby Different speeds between the pulleys or neighboring towing frames or torques can be set which cause a tensile force in the belt. With accordingly high tensile force, the tape is given a permanent elongation, which improves the shape of the tape will be produced.
Das Streckrichten von Normalstahlbändern mit ausgeprägten Fließgrenzen bereitet keine Schwierigkeiten, solange die Streckgrenze nicht zu hoch ist. Die Material verfestigung bleibt bei diesem Material in Grenzen.The stretch straightening of normal steel strips with pronounced yield points does not cause any problems as long as the yield strength is not too high. the Material hardening remains within limits with this material.
Das Streckrichten von hochfesten Stahlbändern bzw. Edelstahlbändern erfordert jedoch sehr hohe Innenzüge und es entsteht eine je nach Streckgrat sehr hohe unerwünschte Verfestigung des Materials. Aus diesem Grunde konnte man bisher hochfeste, bzw. Edelstahlbänder auf Streckrichtanlagen nicht streckrichten.The stretch straightening of high-strength steel strips or stainless steel strips However, it requires very high internal pulls and, depending on the stretch bone, there is a lot high undesirable solidification of the material. For this reason one could so far Do not straighten high-strength or stainless steel strips on straightening systems.
Der vorliegenden Erfindung liegt ausgehend von den geschilderten Problemen beim Richten von hochfesten Stahlbändern die Aufgabe zugrunde, ein Verfahren zu finden, mit dem feste bzw. Edelstahlbänder streckgerichtet werden konnten.The present invention is based on the problems described when straightening high-strength steel strips, the task is based on a process find, with which solid or stainless steel strips could be straightened.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß hochfeste Stahlbänder, insbesondere Edelstahlbänder bei Bandtemperaturen zwischen 600" und 1200"C streckgerichtet wurden.To solve the problem, the invention proposes that high-strength Steel belts, especially stainless steel belts at belt temperatures between 600 "and 1200 "C were straightened.
daß der steile Verlauf er Spannungs-Dehnungs-Kurve bei hochfesten Stählen unter dem Einfluß hoher Temperaturen stark abflacht und die hochfesten Stähle ein Spannungs-Dehnungsverhalten bekommen, daß dem Verhalten von Normal stählen im kalten Zustand ähnlich ist. Darüberhinaus ergibt sich bei Anwendung des vorgeschlagenen Verfahrens der Vorteil, daß bei dem Strecken des Bandes unter hohen Temperaturen keine Material verfestigung entsteht.that the steep course of the stress-strain curve at high strength Steels strongly flattened under the influence of high temperatures and high-strength steels get a stress-strain behavior that the behavior of normal steels in cold state is similar. In addition, when using the proposed Method has the advantage that when the tape is stretched at high temperatures no material solidification occurs.
Versuche mit Edelstahl qualitäten (z. B. X 5 CrNi 18 9) haben gezeigt, daß bei Temperaturen von 1000" bis 1100°C eine ausreichende Verringerung der Spannung des zu streckenden Materials eintritt, so daß das Dehnungsverhalten des Stahlbandes dem gewünschten Zweck entspricht.Tests with stainless steel qualities (e.g. X 5 CrNi 18 9) have shown that at temperatures of 1000 "to 1100 ° C a sufficient reduction in tension of the material to be stretched occurs, so that the elongation behavior of the steel strip corresponds to the intended purpose.
Nach einem weiteren Merkmal der Erfindung ist vorgesehen, das Streckrichten des Bandes im Ofenteil einer Bandbehandlungsanlage bei Ofentemperatur durchzuführen. Dieser Gedanke ermöglicht es, den Streckrichtvorgang in den Glühofen einer Bandbehandlungsanlage zu legen, wozu lediglich die Zuggerüste jeweils vor und hinter dem Ofen anzuordnen sind. Das Band bedarf dann keiner zusätzlichen Aufheizung, weil der Streckrichtvorgang mit der im Ofen herrschenden Temperatur vorgenommen wird.According to a further feature of the invention, the stretch straightening is provided of the strip in the furnace part of a strip treatment plant at furnace temperature. This idea makes it possible to carry out the stretch-straightening process in the annealing furnace of a strip processing plant to lay, including only to arrange the towing frames in front of and behind the furnace are. The tape then does not need any additional heating because of the stretch-straightening process is carried out with the temperature prevailing in the furnace.
Nach einem anderen Merkmal der Erfindung erfolgt das Streckrichten in der Hochtemperaturzone des Ofenteils. Bei einer vorgestimmten Dehnung stellt sich je nach Material eine dieser zugeordnete Spannung ein. Da bei gleichbleibender Dehnung die zugeordnete Spannung von der Temperatur abhängig ist und mit hoher Temperatur geringer wird, erfolgt diese Dehnung und damit das Streckrichten in der Zone des Ofens, wo die höchste Temperatur herrscht.According to another feature of the invention, the stretch straightening takes place in the high temperature zone of the furnace part. Provides a predetermined stretch Depending on the material, a voltage assigned to this occurs. Since with the same Elongation the associated stress is temperature dependent and with high temperature becomes less, this stretching and thus the straightening takes place in the zone of the Oven where the temperature is highest.
Um ein Anlaufen der Bandoberfläche zu verhindern ist nach einem weiteren Vorschlag der Erfindung vorgesehen, daß das Streckrichten unter Schutzgas erfolgt.In order to prevent tarnishing of the belt surface is after another Proposal of the invention provides that the stretch straightening takes place under protective gas.
Claims (4)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843407959 DE3407959A1 (en) | 1984-03-03 | 1984-03-03 | Method for the continuous stretcher levelling of high-strength steel strip |
| SE8500595A SE8500595L (en) | 1984-03-03 | 1985-02-08 | SET TO CONTINUOUSLY STRUCTURAL HOGHALL FIXED STALBAND |
| BE0/214587A BE901849A (en) | 1984-03-03 | 1985-02-28 | METHOD OF CONTINUOUSLY DRAWING A HIGHLY RESISTANT STEEL STRIP AND PRODUCTS THUS OBTAINED. |
| JP4159985A JPS60210322A (en) | 1984-03-03 | 1985-03-01 | Method of continuous tension straightening of strip material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843407959 DE3407959A1 (en) | 1984-03-03 | 1984-03-03 | Method for the continuous stretcher levelling of high-strength steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3407959A1 true DE3407959A1 (en) | 1985-11-28 |
Family
ID=6229557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19843407959 Ceased DE3407959A1 (en) | 1984-03-03 | 1984-03-03 | Method for the continuous stretcher levelling of high-strength steel strip |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS60210322A (en) |
| BE (1) | BE901849A (en) |
| DE (1) | DE3407959A1 (en) |
| SE (1) | SE8500595L (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006042569B3 (en) * | 2006-09-11 | 2008-01-31 | Hugo Vogelsang Gmbh & Co. Kg | Procedure for continuous hardening of steel strips, comprises heating the strip material for hardening on hardening temperature, quenching the strips, and pressing the strips mechanically under heating to tempering temperature |
| WO2011037759A3 (en) * | 2009-09-24 | 2011-09-01 | Ati Properties, Inc. | Processes for reducing flatness deviations in alloy articles |
-
1984
- 1984-03-03 DE DE19843407959 patent/DE3407959A1/en not_active Ceased
-
1985
- 1985-02-08 SE SE8500595A patent/SE8500595L/en not_active Application Discontinuation
- 1985-02-28 BE BE0/214587A patent/BE901849A/en not_active IP Right Cessation
- 1985-03-01 JP JP4159985A patent/JPS60210322A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006042569B3 (en) * | 2006-09-11 | 2008-01-31 | Hugo Vogelsang Gmbh & Co. Kg | Procedure for continuous hardening of steel strips, comprises heating the strip material for hardening on hardening temperature, quenching the strips, and pressing the strips mechanically under heating to tempering temperature |
| WO2011037759A3 (en) * | 2009-09-24 | 2011-09-01 | Ati Properties, Inc. | Processes for reducing flatness deviations in alloy articles |
| US9822422B2 (en) | 2009-09-24 | 2017-11-21 | Ati Properties Llc | Processes for reducing flatness deviations in alloy articles |
| US10260120B2 (en) | 2009-09-24 | 2019-04-16 | Ati Properties Llc | Processes for reducing flatness deviations in alloy articles |
Also Published As
| Publication number | Publication date |
|---|---|
| SE8500595L (en) | 1985-09-04 |
| JPS60210322A (en) | 1985-10-22 |
| BE901849A (en) | 1985-06-17 |
| SE8500595D0 (en) | 1985-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8131 | Rejection |