EP0381756A1 - Hot rolling equipment for strip coils - Google Patents

Hot rolling equipment for strip coils Download PDF

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Publication number
EP0381756A1
EP0381756A1 EP88904624A EP88904624A EP0381756A1 EP 0381756 A1 EP0381756 A1 EP 0381756A1 EP 88904624 A EP88904624 A EP 88904624A EP 88904624 A EP88904624 A EP 88904624A EP 0381756 A1 EP0381756 A1 EP 0381756A1
Authority
EP
European Patent Office
Prior art keywords
rolls
strip
rolling
facility
heating means
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Withdrawn
Application number
EP88904624A
Other languages
German (de)
French (fr)
Other versions
EP0381756A4 (en
Inventor
Sadakazu Nippon Kokan Kabushiki Kaisha-Nai Masuda
Fumio Nippon Kokan Kabushiki Kaisha-Nai Fujita
Tadayoshi Nippon Kokan K.K. Murakami
Masahiko Nippon Kokan K.K. Yoshino
Ryuichi Nippon Kokan Kabushiki Kaisha-Nai Yagi
Masamoto Nippon Kokan Kabushiki Kaisha-Nai Kamata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of EP0381756A1 publication Critical patent/EP0381756A1/en
Publication of EP0381756A4 publication Critical patent/EP0381756A4/en
Withdrawn legal-status Critical Current

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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
    • B21B1/40—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 foils which present special problems, e.g. because of thinness
    • 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
    • B21B1/30—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 non-continuous process
    • B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • 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
    • 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

Definitions

  • the present invention relates to a warm rolling facility suitable to thin plates, especially with less workability.
  • This invention has been developed in view of problems involved with the prior art, and is to provide a warm rolling facility which may carry out the rolling efficiently without causing cracks in thin steel sheets with less workability.
  • the strip is subjected to reverse rollings between tension reels, while it is always maintained at determined temperatures, whereby the facility could prevent cracks or breakages by bending and working
  • the facility is constructed with a rolling machine, tension reels disposed respectively at an inlet side and an outlet side of the rolling machine, deflector rolls between each of the tension reels and the rolling machine.
  • the tension reel is positioned in a warming furnace having a heating means, and the rolls and the deflector rolls are provided with heating means for the rolls.
  • the rolling machine is provided at the inlet and the outlet with heating apparatuses for the strip.
  • the strip is undertaken with the reverse rollings, and in a case of high Si steel sheet, the hot rolled coil of 2 mm thickness is ordinarily rolled to thickness of about 0.5 mm.
  • the rolls are preheated about 200°C (surface temperature) by heating means, and the defector rolls are also always preheated at about 200°C (surface temperature) by heating means.
  • the strip coil is kept at the temperatures between about 300 and 600°C in the warming furnace.
  • the strip which is uncoiled from one of the tension reels and sent from the warming furnace passes the deflector rolls and is rolled. Since the deflector rolls are heated, the strip passing thereon is avoided from decreasing of temperature, so that the strip is checked from bend ing or breakage at the deflector rolls.
  • the strip passing the deflector rolls is heated for securing the temperature of the strip to be rolled and goes into the rolling machine. Since the rolls are preheated, the strip is controlled to the minimum from escaping of the temperature at the rolls.
  • the strip from the rolls is heated by the heating means disposed at the outlet of the rolls, and passes the heated deflector rolls and is coiled by another tension reel within the warming furnace.
  • the strip is heated and maintained at the temperatures about from 200 to 600°C, and thus the rolling is repeated on the strip to reduce it to a thin sheet.
  • the strip is always maintained above the determined temperature (for example, more than 200°C) during the reverse rolling, and the rolling is carried out as exactly avoiding crackings, breakages by the bending or the working at the tension reels, the deflector rolls and the rolling parts.
  • the determined temperature for example, more than 200°C
  • the strip In the rolling of the high Si steel sheet, the strip is kept heated between each passes of the reverse rolls in warming furnace, so that recovery treatment is made between the passes and the maximum permeability is improved. That is, strain caused in the steel structure during the rolling is released moderately by the heating treatment at low temperatures in that the strip is kept heated within the warming furnace, and the coherent structure of the final product is changed by repeating causing of the strains in the steel structure and releasing of the strains, and as a result, the magnetic property is improved.
  • Fig.1 is an explanatory view showing one example of the invention
  • Fig.2 is a diagram showing air cooling of temperature in accordance with thickness of a strip
  • Fig.3 is a diagram showing decreasing of temperature of the strip by contacting the rolls during operation, in relation with the temperature of the surfaces of the rolls and the temperature after rolling the strip.
  • Fig.1 shows one embodiment of the invention where a rolling facility is provided with a rolling machine 1, tension reels 2a,2b disposed at an inlet and an outlet thereof, and deflector rolls 3 positioned between each of the tension reels and the roll ing machine.
  • the tension reels 2a,2b are positioned in warming furnaces 4a,4b having heating means.
  • Each of the warming furnaces 4 is constructed as a gas furnace having a heating burner 5.
  • the heating means appropriate ones may be used.
  • Heating apparatuses 6a,6b are provided at the inlet and the outlet of the rolling machine 1 for heating a running strip.
  • a heating furnace may be used which has a gas furnace (e.g., C gas furnace), an electric radiant heater or radiant tubes.
  • the deflector rolls 3 are positioned by two at the inlet and the outlet of the rolling machine.
  • Each of the deflector rolls 3 is provided with a heating means, and in the present embodiment, the deflector roll is allowed to pass an oil therewithin at high temperature.
  • heating means such may be employed which is disposed with a burner directly heating the surface of the roll, or housed with an electric heater within the roll.
  • Number of the deflector rolls gives influences to bending degree of the strip, and more than one are disposed in accordance with diameters of rolls or positioning conditions of the rolls.
  • the rolls 7 are provided with heating apparatuses for preheating the rolls, and in this embodiment, heating burners 9 stand against the vertical rolls 7. It is possible to compose a structure, as the heating means therefor, nozzles for supplying the oil at high temperature stand against back-up rolls 8 for preheating rolls 7 via the back-up rolls 8.
  • the numeral 10 designates a thickness measuring instrument, 11 designates thermometers, and 12 a lubricating grease supply.
  • the rolling machine 1 of this embodiment has four rolls, and others may be used as five, six rolls or planetary rolling machine, and a reverse rolling machine is not only one stand but also plural stands.
  • the heating apparatuses are positioned at the inlet and the outlet of each of the roll ing machines, thereby to carry out the rolling operation efficiently.
  • the strip coil (A) within the both warming furnaces 4a,4b is normally maintainted at the temperatures of 200 to 600°C, and each of the deflector rolls 3 is always heated to keep the temperatures of around 200°C on the surface.
  • the rolls 7 is preheated or heated to be around 200°C on the surface.
  • the strip (S) at about 200 to 600°C uncoiled from one of the tension reels 2 is bent by the deflector rolls 3 and sent to the rolls 7. Since the deflector rolls 3 are heated at about 200°C, the strip (S) runs as kept at least this temperature without causing breakage.
  • the strip (S) is introduced instantly into the heating apparatus 6a and heated to the rolling temperature, and reduced in thickness by the rolling machine 1. Since the rolls are heated or preheated, the strip is also here prevented from escaping of the temperature.
  • the rolls are not necessarily heated always, and for example, it is possible to preheat the strip fully at a beginning step so as to avoid the strip from decreasing of the temperature, and maintain the rolls at the determined temperature by heat conductivity from the strip.
  • the rolled strip (S) is introduced instantly into the heating apparatus 6b of the outlet and heated, and passes the deflector rolls 3 heated on the surface at about 200°C as stated above, and coiled to the tension reel 2b in the warming furnace 4b.
  • the strip (S) is rolled reversely between the tension reels 2a,2b to a determined thickness.
  • Fig.2 shows the decreasing of the temperature by the air cooling (decreasing from the temperature of 400°C of the strip in the atmosphere of 25°C) in response to the strip thickness.
  • the temperature largely decreases in the thin strip. If the strip were rolled without the heating means between the tension reels, the warming condition could not be kept.
  • Fig.3 is a diagram showing decreasing of temperature of the strip by contacting the rolls during the rolling operation, in relation with the temperature of the surfaces of the rolls and the temperature after rolling the strip. The strip is prevented from decreasing of the temperature effectively by maintaining the roll surface at the determined temperature.
  • the recovery treatment between the passes is carried out (the heating treatment at low temperatures of 300 to 600°C). Strain caused in the steel structure during the rolling by the recovery treatment between the passes is released moderately, and the coherent structure of the final product is improved in the magnetic property by repeating causing of the strains in the steel structure and releasing of the strains.
  • Each of the rolls 7 is supplied with a heat resistant lubricating grease (for example, the grease having an ignition point of more than 300°C) from a lubricating grease supply 12.
  • a heat resistant lubricating grease for example, the grease having an ignition point of more than 300°C
  • the back-up rolls 8 are applied with the oil of more than 200°C for preheating the rolls 7 via preheating of the back-up rolls.
  • the rolling can be performed on even such steel strips with less workability containing more than 4.0 wt%Si, without causing cracks or breakage in the strip.
  • the strip is subjected to the recovery treatment between the passes by keeping warmed between each passes of the reverse rolling, thereby to improve the magnetic property of the final product.
  • the present rolling facility may be applied to to rolling of thin plates with less workability such as high Si steels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

This invention relates to rolling equipment suitably used to roll a strip coil made of fragile material such as high-silicon steel. This equipment is provided with a rolling mill, tension reels disposed at the inlet and outlet sides of the rolling mill, and deflector rolls disposed between the tension reels and rolling mill. The tension reels are provided in heat retaining furnaces having heating means. The rolling rolls and deflector rolls are provided with means for heating these rolls. Strip heating units are provided at the inlet and outlet of the rolling mill.

Description

    TECHNICAL FIELD
  • The present invention relates to a warm rolling facility suitable to thin plates, especially with less workability.
    • BACKGROUND OF THE INVENTION
  • Recently, from standpoint of saving natural sources and energy, small sizings and high efficiency of electromagnetic or electronic parts have been demanded, and soft magnetic property, especially Si steel sheets having excellent iron loss have been also required. It is known that soft magnetic properties of Si steel sheets are improved with increasing of addition of Si and exhibit the maximum permeability at about 6.5 wt%, and since natural electric resistance is high, the iron loss is made small. In this kind of steel sheets, if the Si content is less than 4.0 wt%, workability is abruptly worsened, and therefore it has been impossible to produce high Si steel sheets in industrial scales by the rolling process, but it has been found that the warm rolling could be performed on the thin steel sheets through studies.
  • However, ordinarily used rolling facilities could not secure bending deformation of the coil or temperatures of the materials, and are difficult to roll the high Si steel sheets. For example, Japanese Patent Application Laid-Open No.135,407/86 proposed a facility protecting from an uncoiling reel to first rolling stands with a warming wall, but this facility could not prevent cracks by bending at the deflector rolls or by rolling.
  • This invention has been developed in view of problems involved with the prior art, and is to provide a warm rolling facility which may carry out the rolling efficiently without causing cracks in thin steel sheets with less workability.
    • DISCLOSURE OF OF THE INVENTION
  • For accomplishing this object of the invention, the strip is subjected to reverse rollings between tension reels, while it is always maintained at determined temperatures, whereby the facility could prevent cracks or breakages by bending and working The facility is constructed with a rolling machine, tension reels disposed respectively at an inlet side and an outlet side of the rolling machine, deflector rolls between each of the tension reels and the rolling machine. The tension reel is positioned in a warming furnace having a heating means, and the rolls and the deflector rolls are provided with heating means for the rolls. Further, the rolling machine is provided at the inlet and the outlet with heating apparatuses for the strip.
  • In this rolling facility, the strip is undertaken with the reverse rollings, and in a case of high Si steel sheet, the hot rolled coil of 2 mm thickness is ordinarily rolled to thickness of about 0.5 mm. The rolls are preheated about 200°C (surface temperature) by heating means, and the defector rolls are also always preheated at about 200°C (surface temperature) by heating means. The strip coil is kept at the temperatures between about 300 and 600°C in the warming furnace. The strip which is uncoiled from one of the tension reels and sent from the warming furnace, passes the deflector rolls and is rolled. Since the deflector rolls are heated, the strip passing thereon is avoided from decreasing of temperature, so that the strip is checked from bend ing or breakage at the deflector rolls. The strip passing the deflector rolls is heated for securing the temperature of the strip to be rolled and goes into the rolling machine. Since the rolls are preheated, the strip is controlled to the minimum from escaping of the temperature at the rolls. The strip from the rolls is heated by the heating means disposed at the outlet of the rolls, and passes the heated deflector rolls and is coiled by another tension reel within the warming furnace. The strip is heated and maintained at the temperatures about from 200 to 600°C, and thus the rolling is repeated on the strip to reduce it to a thin sheet.
  • The strip is always maintained above the determined temperature (for example, more than 200°C) during the reverse rolling, and the rolling is carried out as exactly avoiding crackings, breakages by the bending or the working at the tension reels, the deflector rolls and the rolling parts.
  • In the rolling of the high Si steel sheet, the strip is kept heated between each passes of the reverse rolls in warming furnace, so that recovery treatment is made between the passes and the maximum permeability is improved. That is, strain caused in the steel structure during the rolling is released moderately by the heating treatment at low temperatures in that the strip is kept heated within the warming furnace, and the coherent structure of the final product is changed by repeating causing of the strains in the steel structure and releasing of the strains, and as a result, the magnetic property is improved.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Fig.1 is an explanatory view showing one example of the invention; Fig.2 is a diagram showing air cooling of temperature in accordance with thickness of a strip; and Fig.3 is a diagram showing decreasing of temperature of the strip by contacting the rolls during operation, in relation with the temperature of the surfaces of the rolls and the temperature after rolling the strip.
    • MOST PREFERRED EMBODIMENT FOR PRACTISING THE INVENTION
  • The invention will be explained with reference to embodiment shown in the attached drawings.
  • Fig.1 shows one embodiment of the invention where a rolling facility is provided with a rolling machine 1, tension reels 2a,2b disposed at an inlet and an outlet thereof, and deflector rolls 3 positioned between each of the tension reels and the roll ing machine.
  • The tension reels 2a,2b are positioned in warming furnaces 4a,4b having heating means. Each of the warming furnaces 4 is constructed as a gas furnace having a heating burner 5. As the heating means, appropriate ones may be used.
  • Heating apparatuses 6a,6b are provided at the inlet and the outlet of the rolling machine 1 for heating a running strip. As the heating apparatus, a heating furnace may be used which has a gas furnace (e.g., C gas furnace), an electric radiant heater or radiant tubes.
  • The deflector rolls 3 are positioned by two at the inlet and the outlet of the rolling machine. Each of the deflector rolls 3 is provided with a heating means, and in the present embodiment, the deflector roll is allowed to pass an oil therewithin at high temperature. As other heating means, such may be employed which is disposed with a burner directly heating the surface of the roll, or housed with an electric heater within the roll. Number of the deflector rolls gives influences to bending degree of the strip, and more than one are disposed in accordance with diameters of rolls or positioning conditions of the rolls.
  • The rolls 7 are provided with heating apparatuses for preheating the rolls, and in this embodiment, heating burners 9 stand against the vertical rolls 7. It is possible to compose a structure, as the heating means therefor, nozzles for supplying the oil at high temperature stand against back-up rolls 8 for preheating rolls 7 via the back-up rolls 8.
  • The numeral 10 designates a thickness measuring instrument, 11 designates thermometers, and 12 a lubricating grease supply.
  • The rolling machine 1 of this embodiment has four rolls, and others may be used as five, six rolls or planetary rolling machine, and a reverse rolling machine is not only one stand but also plural stands. In the plural stands, the heating apparatuses are positioned at the inlet and the outlet of each of the roll ing machines, thereby to carry out the rolling operation efficiently.
  • According to the above mentioned rolling facility, the strip coil (A) within the both warming furnaces 4a,4b is normally maintainted at the temperatures of 200 to 600°C, and each of the deflector rolls 3 is always heated to keep the temperatures of around 200°C on the surface. The rolls 7 is preheated or heated to be around 200°C on the surface.
  • The strip (S) at about 200 to 600°C uncoiled from one of the tension reels 2 is bent by the deflector rolls 3 and sent to the rolls 7. Since the deflector rolls 3 are heated at about 200°C, the strip (S) runs as kept at least this temperature without causing breakage. The strip (S) is introduced instantly into the heating apparatus 6a and heated to the rolling temperature, and reduced in thickness by the rolling machine 1. Since the rolls are heated or preheated, the strip is also here prevented from escaping of the temperature. The rolls are not necessarily heated always, and for example, it is possible to preheat the strip fully at a beginning step so as to avoid the strip from decreasing of the temperature, and maintain the rolls at the determined temperature by heat conductivity from the strip.
  • The rolled strip (S) is introduced instantly into the heating apparatus 6b of the outlet and heated, and passes the deflector rolls 3 heated on the surface at about 200°C as stated above, and coiled to the tension reel 2b in the warming furnace 4b. The strip (S) is rolled reversely between the tension reels 2a,2b to a determined thickness.
  • Fig.2 shows the decreasing of the temperature by the air cooling (decreasing from the temperature of 400°C of the strip in the atmosphere of 25°C) in response to the strip thickness. The temperature largely decreases in the thin strip. If the strip were rolled without the heating means between the tension reels, the warming condition could not be kept. Fig.3 is a diagram showing decreasing of temperature of the strip by contacting the rolls during the rolling operation, in relation with the temperature of the surfaces of the rolls and the temperature after rolling the strip. The strip is prevented from decreasing of the temperature effectively by maintaining the roll surface at the determined temperature.
  • When the high Si steel strip is subjected to the reverse rolling and if the strip (S) is maintained for a determined time (normally 1 to 10 min.) in the warming furnaces 4a,4b between each passes, the recovery treatment between the passes is carried out (the heating treatment at low temperatures of 300 to 600°C). Strain caused in the steel structure during the rolling by the recovery treatment between the passes is released moderately, and the coherent structure of the final product is improved in the magnetic property by repeating causing of the strains in the steel structure and releasing of the strains.
  • Each of the rolls 7 is supplied with a heat resistant lubricating grease (for example, the grease having an ignition point of more than 300°C) from a lubricating grease supply 12.
  • When a supply device of an oil at high temperature is provided as a heating means of the rolls, the back-up rolls 8 are applied with the oil of more than 200°C for preheating the rolls 7 via preheating of the back-up rolls.
  • According to the present invention, since the reverse rolling can be undertaken while the strip is always maintained above 200°C at which the bending or roling reduction is loaded to the strip, the rolling can be performed on even such steel strips with less workability containing more than 4.0 wt%Si, without causing cracks or breakage in the strip.
  • In the case of the high Si steel, the strip is subjected to the recovery treatment between the passes by keeping warmed between each passes of the reverse rolling, thereby to improve the magnetic property of the final product.
    • INDUSTRIAL APPLICABILITY
  • The present rolling facility may be applied to to rolling of thin plates with less workability such as high Si steels.

Claims (8)

1. A warm rolling facility for steel strip coils, provided with a rolling machine, tension reels disposed at an inlet and an outlet of the rolling machine, and deflector rolls positioned between each of the tension reels and the rolling machine, wherein the tension reels are disposed within warming furnaces having heating means, rolls and the deflector rolls are provided with heating means for heating the rolls, and the rolling machine is positioned at the inlet and outlet thereof with heating means for the strip.
2. The facility as claimed in claim 1, wherein the heating means directly heat the rolls.
3. The facility as claimed in claim 1, wherein the heating means indirectly heat the rolls via back-up rolls.
4. The facility as claimed in claim 3, wherein the heating means are nozzles means for supplying oil at high temperature, standing against the back-up rolls.
5. The facility as claimed in claim 1, 2, 3 or 4, provided with the rolling machines having a plurality of stands, and strip heating apparatuses at the inlet and the outlet of the rolling machine.
6. The facility as claimed in claim 1, 2, 3, 4 or 5, wherein the heating means for the deflector rolls are constructed for flowing heating medium within the rolls.
7. The facility as claimed in claim 1, 2, 3, 4 or 5, wherein the heating means for the deflector rolls heat the rolls outside thereof.
8. The facility as claimed in claim 1, 2, 3, 4, 5 or 6, provided with lubricating grease supply to vicinity of the rolls.
EP19880904624 1987-03-06 1988-05-23 Hot rolling equipment for strip coils Withdrawn EP0381756A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62050293A JPS63220901A (en) 1987-03-06 1987-03-06 Warm rolling equipment for strip coil

Publications (2)

Publication Number Publication Date
EP0381756A1 true EP0381756A1 (en) 1990-08-16
EP0381756A4 EP0381756A4 (en) 1991-09-11

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ID=12854860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880904624 Withdrawn EP0381756A4 (en) 1987-03-06 1988-05-23 Hot rolling equipment for strip coils

Country Status (4)

Country Link
EP (1) EP0381756A4 (en)
JP (1) JPS63220901A (en)
KR (1) KR900700195A (en)
WO (1) WO1989011348A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200927315A (en) * 2007-10-16 2009-07-01 Ihi Metaltech Co Ltd Method for magnesium hot rolling and magnesium hot rolling apparatus
JP2021523011A (en) * 2018-05-08 2021-09-02 マテリオン コーポレイション How to Make Metal Matrix Composite Strip Products
CN112789124B (en) * 2018-05-08 2023-07-25 万腾荣公司 Method for heating a strip product

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240082A (en) * 1925-04-07 1925-09-24 Anton Pomp Improvements relating to the rolling, drawing and the like of iron and steel alloys of high silicon content
FR703514A (en) * 1929-10-10 1931-05-01 Improvements to the means for cooling or heating, from the inside, hollow rotating parts, in particular rolling mill rolls
DE702241C (en) * 1936-02-20 1941-02-03 Emil Vits Rolling mill with direct heating of the rolling stock
US2376240A (en) * 1942-02-14 1945-05-15 Crucible Steel Co America Apparatus for cold rolling
US3616669A (en) * 1969-06-13 1971-11-02 United Eng Foundry Co Method of and apparatus for rolling flat strip
DE2629440A1 (en) * 1976-06-30 1978-01-05 Alma Atinsk Z Tyazhelogo Mash Liquid cooled roller for hot rolling mills - has coolant pipes which enter the ends of the roller and cool the whole roller area
EP0061441A2 (en) * 1981-03-25 1982-09-29 VOEST-ALPINE Aktiengesellschaft Apparatus for the hot rolling of striplike or tabular rolling stock
JPS63180311A (en) * 1987-01-22 1988-07-25 Nippon Steel Corp Hot rolling mill
JPS6453706A (en) * 1987-08-24 1989-03-01 Nippon Steel Corp Device for heating and rolling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191503A (en) * 1983-04-15 1984-10-30 Hitachi Ltd Steckel mill

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240082A (en) * 1925-04-07 1925-09-24 Anton Pomp Improvements relating to the rolling, drawing and the like of iron and steel alloys of high silicon content
FR703514A (en) * 1929-10-10 1931-05-01 Improvements to the means for cooling or heating, from the inside, hollow rotating parts, in particular rolling mill rolls
DE702241C (en) * 1936-02-20 1941-02-03 Emil Vits Rolling mill with direct heating of the rolling stock
US2376240A (en) * 1942-02-14 1945-05-15 Crucible Steel Co America Apparatus for cold rolling
US3616669A (en) * 1969-06-13 1971-11-02 United Eng Foundry Co Method of and apparatus for rolling flat strip
DE2629440A1 (en) * 1976-06-30 1978-01-05 Alma Atinsk Z Tyazhelogo Mash Liquid cooled roller for hot rolling mills - has coolant pipes which enter the ends of the roller and cool the whole roller area
EP0061441A2 (en) * 1981-03-25 1982-09-29 VOEST-ALPINE Aktiengesellschaft Apparatus for the hot rolling of striplike or tabular rolling stock
JPS63180311A (en) * 1987-01-22 1988-07-25 Nippon Steel Corp Hot rolling mill
JPS6453706A (en) * 1987-08-24 1989-03-01 Nippon Steel Corp Device for heating and rolling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8911348A1 *

Also Published As

Publication number Publication date
KR900700195A (en) 1990-08-11
JPS63220901A (en) 1988-09-14
WO1989011348A1 (en) 1989-11-30
EP0381756A4 (en) 1991-09-11

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