WO1998042881A1 - Warmwalzen von stahlband - Google Patents
Warmwalzen von stahlband Download PDFInfo
- Publication number
- WO1998042881A1 WO1998042881A1 PCT/EP1998/001338 EP9801338W WO9842881A1 WO 1998042881 A1 WO1998042881 A1 WO 1998042881A1 EP 9801338 W EP9801338 W EP 9801338W WO 9842881 A1 WO9842881 A1 WO 9842881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ferrite
- temperature
- rolled
- rolling
- hot
- Prior art date
Links
Classifications
-
- 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
- B21B1/24—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 in a continuous or semi-continuous process
- B21B1/26—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 in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0231—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
- 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
- C21D8/0236—Cold 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation 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
- 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
-
- 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
- C22C38/02—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
-
- 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
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/02—Austenitic rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/04—Ferritic rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/16—Two-phase or mixed-phase 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Definitions
- the invention relates to a method for producing continuously cast and / or pre-rolled strips in the austenite area with homogeneous structures and properties from unalloyed and low-alloy steel by continuous hot rolling in two or more passes in the austenite area, starting from a temperature T> Ar 3 + 30 ° C. , with a total degree of deformation e h > ⁇ 30% and then in several passes in the ferrite area with a total degree of deformation e h > 60% and reels.
- the method according to the invention can advantageously be used for steels with (in mass%) max. 0.06% C, max. 1.5% Si, max. 0.6% Mn, 0.005 to 0.25% P, max. 0.03% S, max. Carry out 0.008% N and optionally up to a total of 1.5% of one or more of the elements Al, Ti, Nb, Zr, Cu, Sn, balance iron, including unavoidable impurities.
- the material and forming-technically difficult two-phase area austenite / ferrite is included in the rolling process, but easily overcome by intensive in-line cooling of the rolling stock.
- cooling during continuous finishing rolling offers advantages that have a positive effect on product quality.
- a structural state of high uniformity is achieved over the bandwidth, the strip thickness and the strip length.
- the hot strip produced according to the invention has a structure which is homogeneous over the cross section. The inhomogeneity across the thickness that is usually observed in conventional production is eliminated. The same applies to the coarse grain hems in the area near the surface and in particular in the band edge area.
- the excretion state is also favorably influenced.
- the new process is widely variable.
- the temperature range of the two-phase area can be positioned differently in the pass schedule through the targeted use of several cooling groups in front of and in the finishing line. Cooling in the course of finish rolling accelerates the austenite / ferrite conversion kinetics and advantageously narrows the temperature of the two-phase area. This saves commuting time that would otherwise be necessary to lower the temperature between the roughing and finishing lines.
- the combination of high finish rolling temperature with high coiling temperature leads to a soft hot strip, i.e. to a hot strip with largely softened structural condition.
- a reel is advantageously used at a short distance of, for example, 20 m to the outlet of the last finishing stand.
- This hot strip has properties that are required when using hot strip directly as a material.
- hot strips are either softened by a subsequent annealing process or further processed by cold rolling in order to then be heat-treated with or without a combination of surface finishing.
- the aforementioned combinations of final rolling temperature with reel temperature offer a variety of options for intervening in the property profile of the hot strips for direct consumption or in the property profile of the cold strip produced therefrom, which is easy to prove with texture images.
- the hot strip is advantageously finish-rolled at a temperature in the range between the final transformation temperature of the ferrite and up to 200 ° C. below, preferably less than 100 ° C. below, and then coiled at a temperature> 650 ° C.
- the hot strip can be brought to a coiling temperature at a core cooling rate of over 10 K / s at the latest 2 s after the end of the rolling with liquid and / or gaseous cooling media, such as water and / or water-air mixture be cooled, which is more than 200 ° C below the Ari temperature.
- liquid and / or gaseous cooling media such as water and / or water-air mixture be cooled
- the stated advantages apply both to hot strip for direct consumption and to the cold strip produced from it by subsequent cold rolling with a degree of rolling of> _ 30%, preferably> 60%, and recrystallizing annealing in a continuous process or in a bell annealer.
- Thin strips with a final thickness of less than 3 mm should preferably be rolled using lubricants in the ferrite area.
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)
- Metal Rolling (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1999-7008813A KR100506541B1 (ko) | 1997-03-26 | 1998-03-07 | 강대의 열간 압연 방법 |
CA002284635A CA2284635A1 (en) | 1997-03-26 | 1998-03-07 | Hot-rolling steel strip |
AT98912456T ATE199101T1 (de) | 1997-03-26 | 1998-03-07 | Warmwalzen von stahlband |
AU67286/98A AU728353B2 (en) | 1997-03-26 | 1998-03-07 | Hot-rolling of steel strip |
JP54480498A JP2001520707A (ja) | 1997-03-26 | 1998-03-07 | 鋼ストリップの熱間圧延 |
EP98912456A EP0970256B1 (de) | 1997-03-26 | 1998-03-07 | Warmwalzen von stahlband |
DE59800464T DE59800464D1 (de) | 1997-03-26 | 1998-03-07 | Warmwalzen von stahlband |
US09/381,892 US6284069B1 (en) | 1997-03-26 | 1998-03-07 | Hot-rolling steel strip |
GR20010400371T GR3035532T3 (en) | 1997-03-26 | 2001-03-08 | Hot-rolling steel strip |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712616.2 | 1997-03-26 | ||
DE19712616A DE19712616C2 (de) | 1997-03-26 | 1997-03-26 | Warmwalzen von Stahlband |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998042881A1 true WO1998042881A1 (de) | 1998-10-01 |
Family
ID=7824623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/001338 WO1998042881A1 (de) | 1997-03-26 | 1998-03-07 | Warmwalzen von stahlband |
Country Status (11)
Country | Link |
---|---|
US (1) | US6284069B1 (de) |
EP (1) | EP0970256B1 (de) |
JP (1) | JP2001520707A (de) |
KR (1) | KR100506541B1 (de) |
AT (1) | ATE199101T1 (de) |
AU (1) | AU728353B2 (de) |
CA (1) | CA2284635A1 (de) |
DE (2) | DE19712616C2 (de) |
ES (1) | ES2155285T3 (de) |
GR (1) | GR3035532T3 (de) |
WO (1) | WO1998042881A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT509707B1 (de) * | 2010-05-04 | 2011-11-15 | Siemens Vai Metals Tech Gmbh | Verfahren zum warmwalzen von stahlbändern und warmwalzstrasse |
DE102016114579B4 (de) | 2016-08-05 | 2021-12-09 | Technische Universität Dresden | Harvesterkopf für die Holzernte und Messeranordnung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE807881R (fr) * | 1973-11-27 | 1974-05-27 | Centre Rech Metallurgique | Procede pour la fabrication de toles pour emboutissage |
EP0067374A2 (de) * | 1981-06-11 | 1982-12-22 | Hennigsdorfer Stahl Engineering Gmbh | Verfahren zur thermomechanischen Behandlung beim kontinuierlichen Warmwalzen von Walzstahl |
DE3437637A1 (de) * | 1984-10-13 | 1986-04-24 | Thyssen Stahl AG, 4100 Duisburg | Verfahren zur herstellung von grobblech |
EP0306076A1 (de) * | 1987-09-01 | 1989-03-08 | Hoogovens Groep B.V. | Herstellung von umformbarem Stahlband |
DE19520832A1 (de) * | 1994-10-20 | 1996-04-25 | Mannesmann Ag | Verfahren und Vorrichtung zur Herstellung von Stahlband mit Kaltwalzeigenschaften |
DE19600990A1 (de) * | 1996-01-14 | 1997-07-17 | Thyssen Stahl Ag | Verfahren zum Warmwalzen von Stahlbändern |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8802892A (nl) * | 1988-11-24 | 1990-06-18 | Hoogovens Groep Bv | Werkwijze voor het vervaardigen van vervormingsstaal en band vervaardigd daarmee. |
IT1244295B (it) * | 1990-07-09 | 1994-07-08 | Giovanni Arvedi | Processo ed impianto per l'ottenimento di nastri di acciaio avvolti, aventi caratteristiche di laminati a freddo ottenuti direttamente in linea di laminazione a caldo |
NL9100911A (nl) * | 1991-03-22 | 1992-10-16 | Hoogovens Groep Bv | Inrichting en werkwijze voor het vervaardigen van warmgewalst staal. |
WO1996012573A1 (de) * | 1994-10-20 | 1996-05-02 | Mannesmann Ag | Verfahren und vorrichtung zur herstellung von stahlband mit kaltwalzeigenschaften |
-
1997
- 1997-03-26 DE DE19712616A patent/DE19712616C2/de not_active Expired - Fee Related
-
1998
- 1998-03-07 US US09/381,892 patent/US6284069B1/en not_active Expired - Fee Related
- 1998-03-07 AT AT98912456T patent/ATE199101T1/de active
- 1998-03-07 KR KR10-1999-7008813A patent/KR100506541B1/ko active IP Right Grant
- 1998-03-07 WO PCT/EP1998/001338 patent/WO1998042881A1/de active IP Right Grant
- 1998-03-07 ES ES98912456T patent/ES2155285T3/es not_active Expired - Lifetime
- 1998-03-07 JP JP54480498A patent/JP2001520707A/ja active Pending
- 1998-03-07 CA CA002284635A patent/CA2284635A1/en not_active Abandoned
- 1998-03-07 DE DE59800464T patent/DE59800464D1/de not_active Expired - Lifetime
- 1998-03-07 AU AU67286/98A patent/AU728353B2/en not_active Ceased
- 1998-03-07 EP EP98912456A patent/EP0970256B1/de not_active Expired - Lifetime
-
2001
- 2001-03-08 GR GR20010400371T patent/GR3035532T3/el not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE807881R (fr) * | 1973-11-27 | 1974-05-27 | Centre Rech Metallurgique | Procede pour la fabrication de toles pour emboutissage |
EP0067374A2 (de) * | 1981-06-11 | 1982-12-22 | Hennigsdorfer Stahl Engineering Gmbh | Verfahren zur thermomechanischen Behandlung beim kontinuierlichen Warmwalzen von Walzstahl |
DE3437637A1 (de) * | 1984-10-13 | 1986-04-24 | Thyssen Stahl AG, 4100 Duisburg | Verfahren zur herstellung von grobblech |
EP0306076A1 (de) * | 1987-09-01 | 1989-03-08 | Hoogovens Groep B.V. | Herstellung von umformbarem Stahlband |
DE19520832A1 (de) * | 1994-10-20 | 1996-04-25 | Mannesmann Ag | Verfahren und Vorrichtung zur Herstellung von Stahlband mit Kaltwalzeigenschaften |
DE19600990A1 (de) * | 1996-01-14 | 1997-07-17 | Thyssen Stahl Ag | Verfahren zum Warmwalzen von Stahlbändern |
Also Published As
Publication number | Publication date |
---|---|
CA2284635A1 (en) | 1998-10-01 |
JP2001520707A (ja) | 2001-10-30 |
EP0970256A1 (de) | 2000-01-12 |
DE19712616C2 (de) | 1999-07-15 |
ATE199101T1 (de) | 2001-02-15 |
GR3035532T3 (en) | 2001-06-29 |
DE19712616A1 (de) | 1998-10-01 |
US6284069B1 (en) | 2001-09-04 |
KR20010005742A (ko) | 2001-01-15 |
KR100506541B1 (ko) | 2005-08-08 |
AU6728698A (en) | 1998-10-20 |
DE59800464D1 (de) | 2001-03-15 |
EP0970256B1 (de) | 2001-02-07 |
ES2155285T3 (es) | 2001-05-01 |
AU728353B2 (en) | 2001-01-04 |
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