WO2023003004A1 - Laminoir, laminoir tandem et mécanisme d'alimentation en liquide de refroidissement pour laminoir - Google Patents

Laminoir, laminoir tandem et mécanisme d'alimentation en liquide de refroidissement pour laminoir Download PDF

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Publication number
WO2023003004A1
WO2023003004A1 PCT/JP2022/028140 JP2022028140W WO2023003004A1 WO 2023003004 A1 WO2023003004 A1 WO 2023003004A1 JP 2022028140 W JP2022028140 W JP 2022028140W WO 2023003004 A1 WO2023003004 A1 WO 2023003004A1
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Prior art keywords
rolling mill
coolant
rolls
injection nozzles
pair
Prior art date
Application number
PCT/JP2022/028140
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English (en)
Japanese (ja)
Inventor
隆 乗鞍
Original Assignee
日本センヂミア株式会社
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Filing date
Publication date
Application filed by 日本センヂミア株式会社 filed Critical 日本センヂミア株式会社
Priority to JP2023536768A priority Critical patent/JPWO2023003004A1/ja
Priority to CN202280050003.9A priority patent/CN117642234A/zh
Priority to EP22845937.6A priority patent/EP4374982A1/fr
Publication of WO2023003004A1 publication Critical patent/WO2023003004A1/fr

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    • 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
    • B21B1/28—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 cold-rolling, e.g. Steckel cold mill
    • 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
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • 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
    • B21B45/02—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 for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B21B45/02—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 for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • 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
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally

Definitions

  • the present invention provides a rolling mill, tandem, suitable for rolling soft materials such as ordinary steel sheets and aluminum alloys, and particularly hard materials such as stainless steel sheets and copper alloys, to obtain strips of high product quality such as high sheet shape accuracy.
  • the present invention relates to a rolling mill and a coolant supply mechanism for the rolling mill.
  • Patent Document 1 discloses an example of a strip flatness control device in cold rolling that can correct poor flatness even when the flatness deviation exceeds the threshold value over the entire width of the strip. detects the worst flatness portion of the strip based on the deviation between the flatness detection value obtained by the flatness detector and the flatness target value, and issues a first coolant injection command for this worst flatness portion.
  • Patent Document 2 describes rolling a strip material using a pair of upper and lower work rolls.
  • a rolling mill comprising base coolant supply means for injecting base coolant to the work rolls and spot coolant supply means for injecting spot coolant to the work rolls, wherein the difference in operating temperature between the base coolant and the spot coolant is
  • the base coolant supply means and the spot coolant supply means are configured so that the flow rate ratio of the coolant injected from the base coolant supply means and the spot coolant supply means is set.
  • Patent Documents 1 and 2 when large-diameter work rolls are used for ordinary steel rolling or the like, a plurality of roll injection nozzles are arranged in a row on the entry side and/or the exit side in the width direction of the sheet.
  • the injection of coolant from the roll injection nozzle is turned on and off by selectively opening and closing each electromagnetic opening/closing valve provided in each coolant supply line of a plurality of injection nozzles to correct this local shape defect.
  • the present invention provides a rolling mill, a tandem rolling mill, and a rolling mill equipped with a coolant spray capable of selectively injecting coolant, which is applicable even to a rolling mill with a small space using small-diameter work rolls. provide a coolant supply mechanism for
  • the present invention includes a plurality of means for solving the above problems.
  • a coolant supply mechanism for injecting coolant to the work roll at least one of the side, the upper side, and the lower side, and the coolant supply mechanism is arranged in rows in the width direction of the metal strip.
  • a plurality of injection nozzles for injecting the coolant; a supply line for supplying the coolant to each of the injection nozzles; a header for storing the plurality of the injection nozzles; It is characterized by having a sliding member that selectively blocks or opens a line, and a driving unit that adjusts the coolant injection amount of each of the plurality of injection nozzles by moving the sliding member.
  • FIG. 1 is a front view of a 20-high rolling mill according to a first embodiment of the present invention
  • FIG. 5 is a view taken along line II-II' of FIG. 4
  • FIG. 2 is a cross-sectional view taken along line III-III' of FIG. 1
  • FIG. 2 is a sectional view taken along line IV-IV' of FIG. 1
  • FIG. FIG. 5 is an explanatory diagram of all nozzle injection of injection nozzles in the 20-high rolling mill according to the first embodiment
  • FIG. 4 is an explanatory view of partial nozzle injection stop of injection nozzles in the 20-high rolling mill according to the first embodiment
  • FIG. 4 is an explanatory diagram of stopping injection of all injection nozzles in the 20-high rolling mill according to the first embodiment
  • FIG. 5 is a view taken along line II-II' of FIG. 4
  • FIG. 2 is a cross-sectional view taken along line III-III' of FIG. 1
  • FIG. 2 is a sectional view taken along line IV
  • FIG. 4 is an explanatory view of partial nozzle injection of injection nozzles in the 20-high rolling mill according to the first embodiment;
  • FIG. 4 is a front view of another form of the 20-high rolling mill according to the first embodiment of the present invention;
  • FIG. 10 is a cross-sectional view taken along line XX′ of FIG. 9; It is a front view of a 20-high rolling mill according to a second embodiment of the present invention.
  • 12 is a cross-sectional view taken along line XII-XII' of FIG. 11; FIG. FIG.
  • FIG. 11 is a view for explaining the state of all-nozzle injection of injection nozzles in the 20-high rolling mill according to the second embodiment; It is a figure explaining a state that only the cross section 35b in the 20-high rolling mill according to the second embodiment is closed. It is a figure explaining the state that only the cross section 35c in the 20-high rolling mill according to the second embodiment is closed.
  • FIG. 11 is an explanatory diagram illustrating how only the cross section 35d of the 20-high rolling mill according to the second embodiment is closed;
  • FIG. 11 is a view for explaining the state of all-nozzle injection of injection nozzles in a 20-high rolling mill according to another embodiment of the second embodiment;
  • FIG. 11 is a diagram for explaining how only a cross section 35b is opened in a 20-high rolling mill according to another embodiment of the second embodiment;
  • FIG. 11 is a diagram for explaining how only a cross section 35c is opened in a 20-high rolling mill according to another embodiment of the second embodiment;
  • FIG. 11 is an explanatory diagram for explaining how only a cross section 35d is opened in a 20-high rolling mill according to another embodiment of the second embodiment;
  • FIG. 11 is a view for explaining the state of injection from all the injection nozzles in a 20-high rolling mill according to still another embodiment of the second embodiment;
  • FIG. 11 is a view for explaining how only the cross section 35b of the 20-high rolling mill according to the second embodiment is closed;
  • FIG. 11 is a diagram for explaining how only a cross section 35c of a 20-high rolling mill according to still another embodiment of the second embodiment is closed;
  • FIG. 14 is a diagram for explaining how only the cross section 35d of the 20-high rolling mill according to the second embodiment is closed;
  • It is a front view of a four-high rolling mill according to a third embodiment of the present invention.
  • It is a front view of a six-high rolling mill according to a fourth embodiment of the present invention.
  • It is a front view of an 18-high rolling mill according to a fifth embodiment of the present invention.
  • FIG. 28 is a view taken along line VV in FIG. 27;
  • It is a front view of a 12-high rolling mill according to a sixth embodiment of the present invention.
  • It is a front view of a 20-high rolling mill according to a seventh embodiment of the present invention.
  • FIG. 11 is a front view of a tandem rolling mill according to an eighth embodiment of the present invention;
  • FIG. 1 A first embodiment of a rolling mill and a coolant supply mechanism for a rolling mill according to the present invention will be described with reference to FIGS. 1 to 10.
  • FIG. 1 A first embodiment of a rolling mill and a coolant supply mechanism for a rolling mill according to the present invention will be described with reference to FIGS. 1 to 10.
  • FIG. 1 A first embodiment of a rolling mill and a coolant supply mechanism for a rolling mill according to the present invention will be described with reference to FIGS. 1 to 10.
  • FIG. 1 is a front view of a 20-high rolling mill according to the first embodiment, which is a sectional view taken along line II' in FIG. 4,
  • FIG. 2 is a view taken along line II-II' in FIG.
  • FIG. 4 is a sectional view taken along line III-III', and
  • FIG. 4 is a sectional view taken along line IV-IV' of FIG.
  • FIG. 5 is an explanatory diagram of all nozzle injection of the injection nozzle
  • FIG. 6 is an explanatory diagram of partial nozzle injection stop of the injection nozzle
  • FIG. 7 is an explanatory diagram of all nozzle injection stop of the injection nozzle
  • FIG. It is explanatory drawing of nozzle injection.
  • the rolling mill 100 of the first embodiment is a 20-high rolling mill as shown in FIG.
  • a pair of upper and lower work rolls 2 are supported in contact with two pairs of upper and lower first intermediate rolls 3, respectively.
  • Two pairs of upper and lower first intermediate rolls 3 are supported in contact with three pairs of upper and lower second intermediate rolls 4, respectively.
  • Each of the three pairs of upper and lower second intermediate rolls 4 is supported in contact with four pairs of upper and lower split backing bearing shafts (not shown) composed of split backing bearings 5, shafts 6, and saddles (not shown). ing.
  • four pairs of upper and lower split backing bearing shafts are supported by a mill housing (not shown) with saddles.
  • coolant is injected to the pair of upper and lower work rolls 2 from the entrance and exit sides in the pass direction of the strip 1 and from the vertical direction for roll cooling and rolling lubrication.
  • a total of four coolant supply mechanisms are provided. Coolant oil is injected as a coolant spray 7 from this coolant supply mechanism.
  • 3 and 4 show portions of the surfaces of the pair of upper and lower work rolls 2 hit by the coolant spray 7 at this time as spray injection traces 19 .
  • coolant supply mechanism is provided on all of the entry side, exit side, upper side, and lower side of the strip 1 in the pass direction, it should be provided in at least one of these four locations. Just do it.
  • the coolant supply mechanism includes injection nozzles 8a, 8b, 8c, 8d, 8e, 8f, 8g, and 8h (hereinafter also referred to as "injection nozzles 8"), holes 9a, 9b, 9c, 9d, 9e, 9f, 9g, and 9h ( hereinafter referred to as "hole 9"), headers 12a, 12b, 12c, 12d (hereinafter referred to as “header 12"), tube 11, gears 13a, 13b, 13c, 13d, 13e, 13f, 13g, 13h (hereinafter referred to as "gear 13"), sector gears 14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h (hereinafter also referred to as "sector gear 14"), second pins 15a, 15b, 15c, 15d, 15e, 15f , 15g, 15h (hereinafter also referred to as "second pin 15”), pins 16a, 16b, 16c,
  • a plurality of injection nozzles 8 are arranged in rows in the width direction of the strip 1 and are members for injecting coolant onto the work rolls 2 .
  • the holes 9 are for supplying coolant to each injection nozzle 8 and are provided in the header 12 respectively.
  • the header 12 is a member that stores a plurality of injection nozzles 8 provided.
  • Coolant oil is supplied to coolant passages 10a, 10b, 10c, 10d, 10e, 10f, 10g, and 10h (hereinafter also referred to as "coolant passages 10") of the header 12 via pumps (not shown) and piping. , the tube 11 and the hole 9, the coolant spray 7 is injected from the injection nozzle 8. As shown in FIG.
  • the tube 11 is a member that selectively blocks or opens the holes 9 in the header 12, and is composed of a cylinder having a plurality of holes. More specifically, as shown in FIGS. 5 and 6, a plurality of elongated holes or holes are provided on the outer peripheral surface of the header 12, and the header 12 is attached to each header 12 so as to be rotatably slidable. Note that the number of holes does not need to be plural, and may be one.
  • the rolling mill 100 of the first embodiment has a drive mechanism for moving the tube 11 to adjust the coolant injection amount of each of the plurality of injection nozzles 8 provided.
  • the drive mechanism is composed of gear 13, sector gear 14, second pin 15, pin 16, fork end 17, hydraulic cylinder 18, and the like.
  • each sector gear 14 and each hydraulic cylinder 18 are connected via each pin 16 at a fork end 17 provided at the end of each hydraulic cylinder 18 .
  • Each sector gear 14 is configured to rotate around each second pin 15 .
  • the fan-shaped gears 14 mesh with the gears 13 provided on the tube 11 respectively.
  • the tube 11 is provided with a plurality of holes 11a on its outer peripheral surface. can be adjusted from 0 to a constant value, or switched between 0 and a constant value.
  • the rotation control of the tube 11 may be performed by a control unit (same as the control unit 57 of the seventh embodiment described later, not shown), or may be performed by an operator's operation.
  • the holes 11a are formed in a plurality of elongated hole patterns, when the rotation angle of the tube 11 in FIG. The positions of and coincide with each other in the plate width direction, and the coolant spray 7 is injected from all of the injection nozzles 8 .
  • the plate shape may cause harmful local tension at the 1/8 plate width portion, as shown in FIG.
  • the injection nozzle 8 is blocked by the tube 11 at this point 20a, and the coolant spray 7 is not injected at that point.
  • the portion of the work roll 2 where the coolant spray 7 is not sprayed (area A in FIG. 6) is not cooled more than the other portions, so only that portion thermally expands more than the other portions. , diameter increases.
  • the strip 1 is rolled more than the others by that amount, and the strip shape is improved to a gently sloping shape with no or less harmful localized tension.
  • the hole pattern of the tube 11 is not limited to the patterns shown in FIGS. As shown in FIGS. 7 and 8, if the tube 11A has a pattern of a plurality of short holes 11a1, when the rotation angle of the tube 11A in FIG. The positions of the holes 9 do not match at all locations in the plate width direction, and the coolant spray 7 is not injected from the injection nozzles 8 at all. In this condition, the plate shape may experience detrimental local elongation, as shown in FIG. 7, as in FIG.
  • the injection nozzle 8 is blocked by the tube 11A at the point 21a, and the coolant spray 7 is not injected at that point.
  • the portion of the work roll 2 where the coolant spray 7 is sprayed (area B in FIG. 8) is cooled more than the other portions, so only that portion has less thermal expansion and a smaller diameter than the other portions. Become.
  • the rolling is correspondingly lighter than otherwise, and the plate shape is improved to a gently sloping shape with no or less detrimental local elongation.
  • the injection amount of the injection nozzles 8 at the same widthwise position as the portion where the plate shape is locally stretched is reduced or set to zero, and/or the injection amount of the injection nozzles 8 at other widthwise positions is increased.
  • the cooling of that portion becomes relatively insufficient, the thermal crown of that portion of the work roll 2 grows, and the strip tends to extend only in that portion, and as a result, the local excessive tension of the strip shape is reduced. be.
  • the tube 11 is divided into two parts, one on the operating side and the other on the driving side, which are rotated independently of each other. It is effective when the shape is left-right asymmetrical.
  • the tube 11 may integrate the operation side and the drive side.
  • the pattern of the holes 11a of the tube 11 is bilaterally symmetrical about the center of the plate width
  • the coolant spray 7 is symmetrical about the widthwise center of the strip 1.
  • the pattern of the holes 11a does not have to be symmetrical with respect to the center of the plate width, and can be changed as appropriate.
  • FIG. 9 is a front view of another form of the 20-high rolling mill according to the first embodiment
  • FIG. 10 is a sectional view taken along line XX of FIG.
  • a rolling mill 100A shown in FIGS. 9 and 10 has the same configuration as the rolling mill 100 shown in FIG. 1, etc., except for the configuration of the drive mechanism that rotates the tubes 11 and 11A.
  • the drive mechanism of the rolling mill 100A includes rotary cylinders 25a, 25b, 25c, 25d, 25e, 25f, 25g and 25h (hereinafter also referred to as “rotary cylinder 25”), sprockets 24a, 24b, 24c, 24d, 24e, 24f and 24g. , 24h (hereinafter also referred to as “sprocket 24"), chains 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h (hereinafter also referred to as "chain 23”), sprockets 22a, 22b, 22c, 22d, 22e, 22f , 22g and 22h (hereinafter also referred to as "sprockets 22").
  • a sprocket 24 is attached to the output shaft of the rotary cylinder 25, and a chain 23 is meshed with the sprocket 24 so as to be able to drive. Furthermore, a sprocket 22 is meshed with the side of the chain 23 opposite to the side meshed with the sprocket 24 . Sprockets 22 are attached to the ends of tubes 11 and 11A.
  • a hydraulic motor or an electric motor can be used instead of the rotary cylinder 25.
  • a timing belt can be used as the chain 23 .
  • the rolling mill 100 of the first embodiment of the present invention described above includes at least one pair of work rolls 2 for rolling the strip 1, and one of the entry side, exit side, upper side, and lower side of the pass direction of the strip 1,
  • a coolant supply mechanism for injecting coolant to the work roll 2 is provided at least at one location, and the coolant supply mechanism is provided in a plurality of rows in the width direction of the strip 1 for injecting the coolant.
  • a hydraulic cylinder 18 for adjusting the coolant injection amount of each of the plurality of injection nozzles 8 by moving the tube 11 .
  • the space is narrow, It is difficult to provide each electromagnetic on-off valve and piping in each coolant supply line of each injection nozzle provided in plurality.
  • each coolant supply line of a plurality of injection nozzles is provided with an electromagnetic on-off valve or piping, Then, the cost is high due to the large number of them.
  • the coolant supply mechanism of the present invention since the structure is simple, there is no need to install an electromagnetic on-off valve or piping, and it can be installed even in a narrow space in the case of small-diameter work rolls. Also, cost reduction is possible.
  • the amount of coolant of each injection nozzle 8 can be adjusted from 0 to a constant value, or can be switched between 0 and a constant value. Therefore, the amount of thermal crown of the work rolls is changed according to the difference in the local degree of cooling, and the plate shape is controlled, which is effective in improving local shape defects.
  • Such a rolling mill is suitable for rolling soft materials such as ordinary steel sheets and aluminum alloys, and particularly hard materials such as stainless steel sheets, electrical steel sheets and copper alloys, to obtain strips of high product quality such as high sheet shape accuracy. It can be called a rolling mill.
  • the sliding member is composed of cylindrical tubes 11 and 11A having a plurality of holes, it is possible to easily achieve partial coolant supply with a simple configuration.
  • the tubes 11 and 11A are divided into two parts, one on the driving side and the other on the working side, even if the surface shape of the strip plate 1 is left-right asymmetrical, it is possible to control the supply of coolant according to the surface shape. Therefore, it is possible to obtain a strip 1 having a higher quality surface profile.
  • FIG. 11 is a front view of a 20-high rolling mill according to the second embodiment
  • FIG. 12 is a cross-sectional view taken along line XII-XII' of FIG. 11, and
  • FIG. 14 is a diagram for explaining how only the cross section 35b is closed
  • FIG. 15 is a diagram for explaining how only the cross section 35c is closed
  • FIG. 16 is a diagram for explaining how only the cross section 35d is closed.
  • the rolling mill 100B of the second embodiment shown in FIG. The configuration is different, and the sliding member is composed of either the shields 26 and 37 or the shield plate 43 .
  • shields 26, 37 and shield plate 43 are composed of any one of a column having one or more projections, a column having one or more holes, or a ring-shaped plate movable in the plate width direction. The details will be described below.
  • coolant oil is supplied to the coolant flow path 10 of the header 12 via a pump (not shown) and piping.
  • primary holes 30a, 30b, 30c, 30d, 30e, 30f, 30g, 30h (hereinafter also referred to as "primary holes 30"), coolant flow paths 28a, 28b, 28c, 28d, 28e, 28f, 28g, 28h (hereinafter Shields 26a, 26b, 26c, 26d, 26e, 26f, 26g, and 26h (hereinafter also referred to as ⁇ shields 26''), and holes 29a, 29b, 29c, 29d, 29e, Coolant spray 7 is injected from injection nozzle 8 via 29f, 29g, and 29h (hereinafter also referred to as "hole 29").
  • protrusions 27a, 27b, 27c, 27d, 27e, 27f, 27g, and 27h are provided on the surface of the columnar shield 26, respectively. It is mounted within the coolant passage 28 as possible. A notch may be provided instead of or in addition to the projection 27 .
  • the driving mechanism of the shield 26 includes rotary cylinders 34a, 34b, 34c, 34d, 34e, 34f, 34g, 34h (hereinafter also referred to as “rotary cylinder 34"), sprockets 33a, 33b, 33c, 33d, 33e, 33f, 33g, 33h (hereinafter also referred to as “sprocket 33”), chains 32a, 32b, 32c, 32d, 32e, 32f, 32g, 32h (hereinafter also referred to as "chain 32"), sprockets 31a, 31b, 31c, 31d, 31e, 31f, 31g, and 31h (hereinafter also referred to as "sprocket 31").
  • a sprocket 33 is attached to the output shaft of the rotary cylinder 34a, and this sprocket 33 is meshed so that a chain 32a can be driven, and the other side of the chain 32 is meshed with a sprocket 31.
  • a sprocket 31 is attached to the end of the shield 26 .
  • a hydraulic motor or an electric motor can be used for the rotary cylinder 34 here.
  • the chain 32 may be a timing belt.
  • each hole 29 is opened and closed by rotating the protrusion 27 of the shield 26, and the coolant amount of the injection nozzle 8 is adjusted from 0 to a constant value, or switched between 0 and a constant value. make adjustments.
  • the positions of the protrusions 27 and the positions of the holes 29 do not coincide in the plate width direction, and the coolant spray 7 is injected from all the injection nozzles 8 in the plate width direction.
  • the escape groove 36e (36a, 36b, 36c, 36d) allows the coolant to bypass, so the coolant spray 7 is injected.
  • FIG. 17 is a diagram for explaining how all the injection nozzles in a 20-high rolling mill according to another embodiment of the second embodiment are jetting
  • FIG. 18 is a diagram for explaining how only the cross section 35b is opened
  • FIG. FIG. 20 is a diagram for explaining how only the cross section 35c is opened
  • FIG. 20 is an explanatory diagram for explaining how only the cross section 35d is opened.
  • the sliding member is a columnar shield 37 having one or more channel holes 38 instead of the shield 26 .
  • each hole 29 is opened and closed by moving the channel hole 38 by rotating the shield 37, and the coolant amount of the injection nozzle 8 is adjusted from 0 to a constant value, or from 0 to a constant value. perform switching adjustment.
  • the positions of the passage holes 38 and the positions of the holes 29 all match, and the coolant spray 7 is injected from all the injection nozzles 8 in the plate width direction.
  • the shields 26 and 37 may integrate the operating side and the driving side in the same manner as the tubes 11 and 11A.
  • the coolant spray 7 is symmetrical.
  • the structure is simple.
  • the patterns of the projections 27 and the flow channel holes 38 do not have to be symmetrical about the center of the plate width, and can be changed as appropriate.
  • FIG. 21 is a diagram for explaining the state of all injection nozzles in a 20-high rolling mill according to still another embodiment of the second embodiment;
  • FIG. FIG. 24 is a diagram explaining how only the cross section 35c is closed, and
  • FIG. 24 is a diagram illustrating how only the cross section 35d is closed.
  • the sliding member can be a shield plate 43 that can move in the plate width direction instead of the shields 26 and 37, as shown in FIG. 21 and the like.
  • the shielding plate 43 is arranged outside the screw shaft 42.
  • the shielding plate 43 shifts in the axial direction of the screw shaft 42 (that is, in the width direction of the plate) to appropriately open and close the holes 29. Then, the coolant amount of the injection nozzle 8 is adjusted from 0 to a constant value, or is switched between 0 and a constant value.
  • the positions of the shielding plate 43 and the positions of the holes 29 do not match at the positions of the cross sections 35a, 35b, 35c, and 35e, and the coolant spray 7 is injected.
  • the position of the shielding plate 43 and the position of the hole 29 match, and the injection amount of coolant is reduced or zero.
  • the screw shaft 42 can be integrated on the operation side and the drive side, and the operation side and the drive side can be reverse-threaded with right-handed and left-handed threads.
  • the shielding plate 43 can be symmetrically moved between the operating side and the driving side only by one-side rotational driving of the operating side or the driving side.
  • the coolant spray 7 is sprayed symmetrically, but there is an advantage that the drive device is only on one side, the operation side or the drive side, and the structure is simple.
  • the sliding member is any one of a columnar shield 26 having one or more projections, a columnar shield 37 having one or more holes, or a shield plate 43 movable in the plate width direction. Also by configuring with, it is possible to easily realize partial supply of coolant with a simple configuration.
  • FIG. 25 is a front view of a four-high rolling mill according to the third embodiment.
  • the rolling mill 100C of the third embodiment is a four-high rolling mill, and a strip 1 as a rolling material is rolled by a pair of upper and lower work rolls 2. As shown in FIG. The pair of upper and lower work rolls 2 are supported in contact with a pair of upper and lower reinforcing rolls 44, respectively.
  • the rolling mill 100C also has the coolant supply mechanism described in the first and second embodiments.
  • a four-high rolling mill 100C as in the third embodiment has a relatively small number of rolls and ample space.
  • the coolant supply mechanism described in the above-described first and second embodiments does not use many electromagnetic valves and has a simple structure, which has the advantage of being inexpensive.
  • FIG. 26 is a front view of a six-high rolling mill according to the fourth embodiment.
  • the rolling mill 100D of the fourth embodiment is a six-high rolling mill, and the strip 1, which is the material to be rolled, is rolled by a pair of upper and lower work rolls 2.
  • the pair of upper and lower work rolls 2 are supported in contact with a pair of upper and lower intermediate rolls 45
  • the pair of upper and lower intermediate rolls 45 are respectively supported in contact with a pair of upper and lower reinforcing rolls 46 .
  • the rolling mill 100D also has the coolant supply mechanism described in the first and second embodiments.
  • a six-high rolling mill 100D like the fourth embodiment has a relatively small number of rolls and has ample space.
  • the coolant supply mechanism described in the above-described first and second embodiments does not use many electromagnetic valves and has a simple structure, which has the advantage of being inexpensive.
  • FIG. 27 is a front view of an 18-high rolling mill according to the fifth embodiment
  • FIG. 28 is a VV arrow view of FIG.
  • the rolling mill 100E of the fifth embodiment is an 18-high rolling mill, and the strip 1, which is the material to be rolled, is rolled by a pair of upper and lower work rolls 2.
  • the pair of upper and lower work rolls 2 are supported in contact with a pair of upper and lower intermediate rolls 47
  • the pair of upper and lower intermediate rolls 47 are respectively supported in contact with a pair of upper and lower reinforcing rolls 48 .
  • the work rolls 2 are horizontally supported by four pairs of support rolls 49 and eight pairs of support bearings 50 that support the support rolls 49 .
  • the support bearing 50 is supported by the arm 52 via the shaft 51 and the arm 52 is supported by the side beam 53 .
  • the rolling mill 100E also has the coolant supply mechanism described in the first and second embodiments.
  • the tube 11 is rotatably built in the side beam 53.
  • FIG. 29 is a front view of a 12-high rolling mill according to the sixth embodiment.
  • the rolling mill 100F of the sixth embodiment is a 12-high rolling mill, and a strip 1, which is a material to be rolled, is rolled by a pair of upper and lower work rolls 2.
  • the pair of upper and lower work rolls 2 are each contacted and supported by two pairs of upper and lower intermediate rolls 54 , and the two pairs of upper and lower intermediate rolls 54 are respectively contacted and supported by three pairs of upper and lower split backing bearing shafts 55 .
  • the rolling mill 100F also has the coolant supply mechanism described in the first and second embodiments.
  • FIG. 30 is a front view of a 20-high rolling mill according to the seventh embodiment.
  • the rolling mill 100G of the seventh embodiment is a 20-high rolling mill, and shape detection rollers 56 for detecting the plate shape of the strip 1 are provided on the delivery side of the rolling mill 100G.
  • a control unit 57 is provided to control the operation of the hydraulic cylinder 18 so as to move the tube 11 so as to correct the shape defect of local elongation or tension based on the plate shape detected by the shape detection roller 56 .
  • the control unit 57 is preferably configured by a computer or the like including a CPU, a storage medium, a display device, and the like.
  • the control unit 57 adjusts the coolant amount of each injection nozzle 8 by adjusting the pattern of the plurality of long holes or holes on the outer peripheral surface of the tube 11 and the rotation angle of the tube 11 to correct this local shape defect.
  • the injection amount of the injection nozzles 8 at the plate width direction position that is the same as the portion where the plate shape is locally stretched can be decreased or set to 0, and the injection amounts of the other injection nozzles 8 can be increased.
  • a shape detection roller 56 is arranged on the delivery side of the rolling mill to detect the plate shape of the strip 1, and a shape defect such as local elongation or tension is detected based on the plate shape detected by the shape detection roller 56.
  • a control unit 57 for controlling the operation of the hydraulic cylinder 18 to move the tubes 11 and 11A, the shields 26 and 37, and the shield plate 43 so as to correct, the shape of the strip plate 1 can be adjusted. Coolant supply control can be performed more easily, and further improvement of the plate shape can be realized more easily.
  • control unit 57 reduces or sets the injection amount of the injection nozzles 8 at the same position in the plate width direction as the portion where the plate shape is locally stretched, and increases the injection amount of the other injection nozzles 8 so that the plate shape
  • the plate shape can be improved more reliably. can be planned.
  • FIG. 31 is a front view of a tandem rolling mill in which a plurality of stands of 20-high rolling mills according to the eighth embodiment are arranged.
  • the eighth embodiment is a tandem rolling mill 200 in which a plurality of rolling mills are arranged in stands.
  • the final stand is provided with the rolling mill 100 described in the first embodiment. Since the rolling mill 100 of the first embodiment is arranged at the final stand, it is effective in correcting local shape defects in the plate shape in the final rolling pass.
  • any one of the rolling mills 100A, 100B, 100C, 100D, 100E, 100F, and 100G of the modified examples of the first embodiment to the seventh embodiment can be provided.
  • Any one or more of the rolling mills 100, 100A, 100B, 100C, 100D, 100E, 100F, and 100G described in the first to seventh embodiments may be installed in other stands, not limited to the final stand. can be provided.
  • Hydraulic cylinder (drive part) 19 Spray injection traces 20a, 21a Locations (closed) 20b, 21b... places (open) 22, 22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h... Sprockets (driving parts) 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h ... chain (driving part) 24, 24a, 24b, 24c, 24d, 24e, 24f, 24g, 24h... Sprockets (driving parts) 25, 25a, 25b, 25c, 25d, 25e, 25f, 25g, 25h...
  • rotary cylinder (driving part) 26, 26a, 26b, 26c, 26d, 26e, 26f, 26g, 26h... shields (sliding members) 27, 27a, 27b, 27c, 27d, 27e, 27f, 27g, 27h... Projections 28, 28a, 28b, 28c, 28d, 28e, 28f, 28g, 28h... Coolant passages (supply lines) 29, 29a, 29b, 29c, 29d, 29e, 29f, 29g, 29h... holes (supply lines) 30, 30a, 30b, 30c, 30d, 30e, 30f, 30g, 30h...

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

Abstract

Ce mécanisme d'alimentation en liquide de refroidissement pour injecter un liquide de refroidissement dans un cylindre de travail 2 comprend : une pluralité de buses d'injection 8 qui injectent un liquide de refroidissement et qui sont disposées dans une rangée dans le sens de la largeur de la plaque d'une plaque de bande 1 ; des trous 9 pour fournir le liquide de refroidissement aux buses d'injection 8 respectives ; des collecteurs 12 pour loger la pluralité de buses d'injection 8 ; des tubes 11 bloquant ou laissant sélectivement ouverts les trous 9 à l'intérieur des collecteurs 12 ; et des vérins hydrauliques 18 qui déplacent les tubes 11 pour régler la quantité d'injection de liquide de refroidissement de chacune de la pluralité de buses d'injection 8 fournies. Grâce à la configuration mentionnée ci-dessus, l'invention concerne : un laminoir comprenant un pulvérisateur de liquide de refroidissement qui peut injecter de manière sélective un liquide de refroidissement et qui peut être appliqué à un laminoir qui a peu d'espace dans lequel des rouleaux de travail de petit diamètre sont utilisés ; un laminoir tandem ; et un mécanisme d'alimentation en agent de refroidissement pour un laminoir
PCT/JP2022/028140 2021-07-21 2022-07-20 Laminoir, laminoir tandem et mécanisme d'alimentation en liquide de refroidissement pour laminoir WO2023003004A1 (fr)

Priority Applications (3)

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JP2023536768A JPWO2023003004A1 (fr) 2021-07-21 2022-07-20
CN202280050003.9A CN117642234A (zh) 2021-07-21 2022-07-20 轧机、串联式轧机以及轧机用冷却剂供给机构
EP22845937.6A EP4374982A1 (fr) 2021-07-21 2022-07-20 Laminoir, laminoir tandem et mécanisme d'alimentation en liquide de refroidissement pour laminoir

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JP2021-120162 2021-07-21
JP2021120162 2021-07-21

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EP (1) EP4374982A1 (fr)
JP (1) JPWO2023003004A1 (fr)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106509U (fr) * 1980-12-18 1982-07-01
JPH0450965Y2 (fr) * 1983-03-16 1992-12-01
JP3728784B2 (ja) 1995-11-13 2005-12-21 株式会社間組 シールド掘進機の到達方法
JP2006315084A (ja) * 2005-05-10 2006-11-24 T Sendzimir Inc 改良された側部支持６段圧延機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106509U (fr) * 1980-12-18 1982-07-01
JPH0450965Y2 (fr) * 1983-03-16 1992-12-01
JP3728784B2 (ja) 1995-11-13 2005-12-21 株式会社間組 シールド掘進機の到達方法
JP2006315084A (ja) * 2005-05-10 2006-11-24 T Sendzimir Inc 改良された側部支持６段圧延機

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EP4374982A1 (fr) 2024-05-29
JPWO2023003004A1 (fr) 2023-01-26
CN117642234A (zh) 2024-03-01

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