JP2006095577A - Cross rolling mill and rolling equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cross rolling mill, in which the work rolls and their roll chocks used for a 2-high rolling mill, which performs cross-rolling at a large cross-angle, are replaceable for the work rolls, the back-up rolls, and their roll chocks used for a 4-high rolling mill, which performs cross-rolling at a minute cross-angle. <P>SOLUTION: The cross rolling mill has: an upper intermediate housing 2, which is supported by the upper part of a fixed housing 1 inside the fixed housing 1; a lower intermediate housing 3, which is disposed under the upper intermediate housing 2 and supported by the lower part of the fixed housing 1 inside the fixed housing 1; and screw shafts 13, 14, 15, 16, 21, 22, 23, 24, which are disposed in the inlet side and the outlet side of the fixed housing 1 and relatively cross the upper intermediate housing 2 and the lower intermediate housing 3. The upper and lower intermediate housings 2, 3 are made to house work rolls 25, 26 and their roll chocks 34, 35 used for the 2-high rolling mill, which performs cross-rolling at a large cross-angle, or to house the work rolls, the back-up rolls, and their roll chocks used for the 4-high rolling mill, which performs cross-rolling at a minute cross-angle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cross rolling mill and rolling equipment.

  Conventionally, as one of rolling mills for rolling a material to be rolled such as a strip steel plate, it has an upper work roll and a lower work roll, and the upper work roll and the 2. Description of the Related Art A two-stage cross rolling mill that performs large cross rolling with a cross angle with a lower work roll of 3 ° to 40 ° is known (see, for example, Patent Document 2 below). When large cross rolling is performed using such a two-stage cross rolling mill, the material to be rolled is rolled and simultaneously subjected to shear deformation in the sheet width direction, thereby improving workability and rolling material having good properties. (For example, refer to the following non-patent document 1). In such a two-stage cross rolling mill, since the gap at the end of the upper and lower work rolls becomes too large compared to the gap at the center of the upper and lower work rolls, it is necessary to use a large concave crown roll. For this reason, in the rolling mill (four-stage cross rolling mill) described in Patent Document 2 below, since the diameter difference between the roll length of the work roll and the backup roll is excessive, the work roll and the backup are accompanied by the difference in roll peripheral speed. Slip occurs between the rolls. Therefore, since it is difficult to put the four-stage cross rolling mill into practical use by large cross rolling, the two-stage cross rolling is performed when the material is improved in a relatively thick range such as hot rolling or rough rolling. Large cross rolling in a machine is used.

  As another rolling mill, it has an upper work roll and a lower work roll, and the cross angle between the upper work roll and the lower work roll is 0 ° to 3 ° in a state in which the respective central axes are kept substantially parallel. A four-stage cross (pair cross) rolling mill that performs fine cross-rolling with crossing is known (see, for example, Patent Document 1 below). In this four-stage cross rolling mill, an upper backup roll is disposed above the upper work roll, and a lower backup roll is disposed below the lower work roll. In such a four-stage cross rolling mill, a material to be rolled is rolled by applying a rolling load to the upper work roll and the lower work roll through the upper backup roll and the lower backup roll. It is generally known that the effect of improving the thickness accuracy in the sheet width direction of the material to be rolled can be obtained.

Japanese Patent Publication No.58-31242 JP 2004-74260 A (paragraph number [0015], FIG. 1) T. Hanamura et al., “Influence of cross rolling on processability”, CAMP-ISIJ, Vol. 15, (2002) -1226

  Recently, rolling of light alloys such as magnesium and aluminum has been studied as a material to be rolled. That is, some of these light alloys have smaller hardness and lower rolling reaction force at the time of rolling than steel and the like used as a conventional material to be rolled. The material of the light alloy is improved by carrying out large cross rolling with the above-described two-stage cross rolling mill, and then performing fine cross rolling with the above-described four-stage cross rolling mill to improve the thickness accuracy in the sheet width direction. Rolling has been studied. However, since such a light alloy is less demanding than steel and the like, if rolling is performed using a plurality of rolling mills such as a two-stage cross rolling mill and a four-stage cross rolling mill, the manufacturing cost increases. There was a problem.

  Therefore, the present invention has been proposed in view of the above-mentioned problems, a work roll for a two-high rolling mill capable of large crossing and a roll chock thereof, a work roll for a four-high rolling mill capable of micro-crossing, a backup roll, and those rolls. An object of the present invention is to provide a cross rolling mill and a rolling facility that can replace a roll chock.

  A cross rolling mill according to a first aspect of the present invention for solving the above-described problem is provided in a fixed housing, an upper intermediate housing supported by an upper portion of the fixed housing, and a lower portion of the upper intermediate housing in the fixed housing. A lower intermediate housing supported by a lower portion of the fixed housing, and a driving means disposed on the entrance side and the exit side of the fixed housing and relatively crossing the upper intermediate housing and the lower intermediate housing. In the upper and lower intermediate housing, a work roll for a two-high rolling mill capable of large crossing and a roll chock thereof, or a work roll and a backup roll for a four-high rolling mill capable of micro-crossing, and a roll chock thereof are accommodated. And Examples of the driving means include a screw shaft and a hydraulic servo cylinder.

  A cross rolling mill according to a second invention for solving the above-described problem is the cross rolling mill according to the first invention, wherein the upper roll housed in the upper intermediate housing is driven by the driving means. The lower roll housed in the lower intermediate housing is crossed with a drive side or work side different from the fulcrum of the upper roll as a fulcrum.

  A rolling facility according to a third invention for solving the above-described problem is characterized in that a heating furnace is arranged on one side or both sides of the cross rolling mill described in the first invention or the second invention.

  According to the cross rolling mill according to the first aspect of the present invention, in the fixed housing, the upper intermediate housing supported by the upper portion of the fixed housing, and the fixed housing is disposed below the upper intermediate housing and fixed. A lower intermediate housing supported by a lower portion of the housing, and a driving means disposed on the entry side and the exit side of the fixed housing to cross the upper intermediate housing and the lower intermediate housing relative to each other. By storing the work roll for 2-high rolling mill and its roll chock capable of large crossing, or the work roll and backup roll for 4-high rolling mill capable of micro-crossing and their roll chock in the intermediate housing, one cross In the rolling mill, the material of the material to be rolled can be improved, Can be rolled rolled material to a predetermined thickness. That is, the work roll for the two-high rolling mill capable of large crossing and the roll chock thereof are accommodated in the upper and lower intermediate housing, the upper work roll for the two-high rolling mill accommodated in the upper intermediate housing, and the lower intermediate roll Rolling the material to be rolled to a large cross of 3 ° to 40 ° with the lower work roll for a two-high mill accommodated in the housing to improve the material of the material to be rolled, The upper and lower work rolls for two-high mills and their roll chocks are taken out from the upper and lower intermediate housings, and the micro rollable four-high mill work rolls and backup rolls and their roll chocks are accommodated in the upper and lower intermediate housings. And an upper work roll and a backup roll for a four-high rolling mill housed in the upper intermediate housing and their rolls. The material to be rolled that has been subjected to the large cross rolling is a fine cross of 0 ° to 3 ° between the roll chock, the lower work roll for the four-high rolling mill housed in the lower intermediate housing, the backup roll, and the roll chock. It can be further rolled until it reaches a predetermined thickness. Therefore, manufacturing cost can be suppressed by applying such a rolling mill to rolling materials, such as a light alloy which has only a small amount of demand.

  The cross rolling mill according to the second invention is the cross rolling mill described in the first invention, wherein the upper roll housed in the upper intermediate housing is driven or driven by the driving means. And the lower roll housed in the lower intermediate housing is crossed with the driving side or working side different from the fulcrum of the upper roll as a fulcrum, thereby crossing the upper and lower rolls. The drive mechanism may be provided on either the drive side or the work side, and the cross is compared with the double cross method in which the center of the drive side and the work side in the longitudinal direction of the upper and lower rolls is crossed as a fulcrum. Since the number of mechanisms installed can be reduced, the structure can be simplified and the cost of the cross rolling mill itself can be achieved. It can be reduced.

  According to the rolling equipment concerning the 3rd invention, hot rolling or warm rolling is possible by arranging a heating furnace on one side or both sides of the cross rolling machine described in the 1st invention or the 2nd invention. Furthermore, even if the material to be rolled by the cross rolling mill is thin and easy to dissipate heat, or due to the physical properties of the material to be rolled per se, the material to be rolled is heated in the heating furnace. Since it can heat immediately, the said to-be-rolled material can be rolled efficiently and the manufacturing cost can be reduced.

  The best mode for carrying out the cross rolling mill according to the present invention will be specifically described below based on examples.

  FIG. 1 is a schematic view when the cross rolling mill according to the first embodiment of the present invention is used as a two-stage cross rolling mill, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof. 4 is a cross-sectional view taken along arrow IV-IV in FIG. In FIG. 3, the one-dot chain line is the roll center of the upper and lower work rolls for the two-high rolling mill, the two-dot chain line is the line center of the strip of the material to be rolled, and the intersection of the roll center and the line center is two-stage rolling The cross rotation center of the upper and lower work rolls for machines is shown.

  As shown in FIG. 1, the cross rolling mill according to the first embodiment of the present invention includes a fixed housing 1, an upper intermediate housing 2 that is supported on the upper portion of the fixed housing 1, and a fixed housing. 1, the lower intermediate housing 3 is disposed below the upper intermediate housing 2 and supported by the lower portion of the fixed housing 1. The upper intermediate housing 2 is supported via a support device 4 (see FIG. 2) disposed on the upper portion of the fixed housing 1. The lower intermediate housing 3 is supported on the lower portion of the fixed housing 1 via the liner 5.

  As shown in FIGS. 1 and 5, the upper intermediate housing 2 can accommodate an upper work roll 25 and a roll chock 34 thereof, which will be described later, for a two-stage rolling mill (two-stage rolling mill) capable of large crossing. An upper work roll 27 and a backup roll 51 for a four-high rolling mill (four-stage cross rolling mill) capable of micro-crossing, which will be described later, and roll chocks 52 and 53 thereof can be accommodated. Similarly, the lower intermediate housing 3 can accommodate a lower work roll 26 for a two-stage cross rolling mill and a roll chock 35 described later, and a lower work roll 28 and a backup roll 54 for a four-stage cross rolling mill, which will be described later. And those roll chocks 55 and 56 can be accommodated.

  As shown in FIG. 1, drive mechanisms 6 and 7 are attached to the input side and the output side of the fixed housing 1 on the work side, and a drive rod 8 is connected to the output shaft. Examples of the drive mechanisms 6 and 7 include a motor and a handle. Four worm speed reducers 9, 10, 11, and 12 are mounted on the inlet side of the fixed housing 1, and the worm speed reducers 9, 10, 11, and 12 are connected to the lower end of the drive rod 8. The base end portions of the screw shafts 13, 14, 15, 16 are drivingly connected to the worm speed reducers 9, 10, 11, 12 respectively. The tip portions 13a, 14a of the upper screw shafts 13, 14 abut on the side portion 2a on the entry side in the upper intermediate housing 2, and the tip portions 15a, 16a of the lower screw shafts 15, 16 are in contact with the lower intermediate housing 3. Is in contact with the exit-side entrance 3a.

  Similarly, four worm speed reducers 17, 18, 19, and 20 are mounted on the exit side of the fixed housing 1, and the worm speed reducers 17, 18, 19, and 20 are connected to the lower end of the drive rod 8. Yes. The base ends of the screw shafts 21, 22, 23, and 24 are drivingly connected to the worm reducers 17, 18, 19, and 20, respectively. The tip portions 21 a and 22 a of the screw shafts 21 and 22 are in contact with the outlet side portion 2 b of the upper intermediate housing 2, and the tip portions 23 a and 24 a of the screw shafts 23 and 24 are the outlet side side of the lower intermediate housing 3. It is in contact with the portion 3b. The same drive mechanism is also installed on the drive side of the fixed housing 1.

  Accordingly, the drive mechanisms 6 and 7 installed on the working side and the drive side of the fixed housing 1 are driven through the drive rod 8 and the worm speed reducers 9, 10, 11, 12, 17, 18, 19, 20. The screw shafts 13, 14, 15, 16, 21, 22, 23, and 24 act to rotate the upper intermediate housing 2 and the lower intermediate housing 3 in opposite directions, and the working side and the driving side are also reversed. It can be made to cross relatively by driving in the direction. That is, the upper intermediate housing 2 and the lower intermediate housing 3 are crossed, respectively, and an upper work roll 25 for a later-described two-stage cross rolling mill housed in the upper intermediate housing 2 and a later-described housed in the lower intermediate housing 3. The above-mentioned four-stage cross rolling mill, which can be relatively crossed with the lower work roll 26 for a two-stage cross rolling mill at a relative angle of 3 ° to 40 ° and is housed in the upper intermediate housing 2. The cross angle between the upper work roll 27 for use and the lower work roll 28 for a four-stage cross rolling mill, which will be described later, housed in the lower intermediate housing 3 can be relatively finely crossed at 0 ° to 3 °. It has become. In the present embodiment, the screw shafts 13, 14, 15, 16, 21, 22, 23, 24 are used as the driving means. However, a hydraulic servo cylinder may be used, and the screw shafts 13, 14, 15, 16 may be used. , 21, 22, 23, and 24 have the same effect. By using the driving means as described above, the work rolls 27 and 28 for the four-stage cross rolling mill have the same effects as the work rolls 25 and 26 for the two-stage cross rolling mill.

  Hydraulic cylinders 29, 30, 31, 32 for scraping are respectively mounted on the inlet side and the outlet side of the fixed housing 1, and their tips are respectively on the inlet side and the outlet side of the upper intermediate housing 2. The side portions 2a and 2b are in contact with the entrance and exit side portions 3a and 3b of the lower intermediate housing 3, respectively.

  Here, the structure when the cross rolling mill according to the first embodiment of the present invention is used as a two-stage cross rolling mill will be described below.

  As shown in FIGS. 1 to 4, the upper intermediate housing 2 supports a roll chock 34 of the upper work roll 25 for a two-stage cross rolling mill via a chock clamp 33. The shaft part of the upper work roll 25 for a two-stage cross rolling mill is rotatably supported by the roll chock 34. Similarly, the lower intermediate housing 3 supports a roll chock 35 of a lower work roll 26 for a two-stage cross rolling mill via a chock clamp (not shown). The roll chock 35 rotatably supports the shaft portion of the lower work roll 26 for a two-stage cross rolling mill. Accordingly, the lower work roll 26 for the two-stage cross rolling mill and the upper work roll 25 for the two-stage cross rolling mill are arranged so as to face each other and cross in a plane parallel to the material to be rolled. ing.

  The upper work roll 25 for a two-stage cross rolling mill and the lower work roll 26 for a two-stage cross rolling mill are connected to a pinion stand 42 via universal joints 38 and 39, and the pinion stand 42 is connected to a motor 43. .

  Lowering devices 44 and 45 are provided on the working side and the driving side of the upper portion 1a of the fixed housing 1, respectively, and can be driven separately. The reduction devices 44 and 45 are provided with reduction screws 46 and 47, respectively. At the tips of these reduction screws 46 and 47, a pressing member 48 extending in the direction of entering and exiting the fixed housing 1 is provided, and the side portions 48 a and 48 b are arranged so as to contact the inside of the fixed housing 1, respectively. The roll chock 34 of the upper work roll 25 for a two-stage cross rolling mill is squeezed down. A cradle 50 is disposed below the roll chock 35 of the lower work roll 26 for the two-stage cross rolling mill, and receives the reduction by the reduction screws 46 and 47 via the roll chock 35.

  Therefore, by driving the reduction screws 46 and 47, the strip S of the material to be rolled is rolled down via the roll chock 34 of the upper work roll 25 for the two-stage cross rolling mill and the upper work roll 25 for the two-stage cross rolling mill. It has become. In this embodiment, the reduction screws 46 and 47 have been described. However, a reduction cylinder may be used, and the same effect as the reduction screws 46 and 47 is achieved.

  Here, the structure when the cross rolling mill according to the first embodiment of the present invention is used as a four-stage cross rolling mill will be described below with reference to the drawings.

  FIG. 5 is a schematic view when the cross rolling mill according to the first embodiment of the present invention is used as a four-stage cross rolling mill, and FIG. 6 is a front view thereof. However, the same members as those used when the above-described cross rolling mill is used as a two-stage cross rolling mill are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 5 and 6, the upper intermediate housing 2 includes an upper work roll 27 for a four-stage cross rolling mill, an upper backup roll 51 that applies a rolling load to the upper work roll 27 for a four-stage cross rolling mill, A roll chock 52 of the upper work roll 27 for a four-stage cross rolling mill and a roll chock 53 of the upper backup roll 51 are accommodated. The shaft part of the upper work roll 27 for the four-stage cross rolling mill is rotatably supported by the roll chock 52 of the upper work roll 27 for the four-stage cross rolling mill, and the upper backup roll 51 is supported by the roll chock 53 of the upper backup roll 51. A shaft portion of 51 is rotatably supported. However, the roll chock 52 of the upper work roll 27 for the four-stage cross rolling mill is held in the roll chock 53 of the upper backup roll 51, and the upper work roll 27 for the four-stage cross rolling mill and the backup roll 51 are always parallel. It has a structure.

  Similarly, the lower intermediate housing 3 includes a lower work roll 28 for a four-stage cross rolling mill, a lower backup roll 54 that applies a rolling load to the lower work roll 28 for a four-stage cross rolling mill, and a lower part for a four-stage cross rolling mill. A roll chock 55 of the work roll 28 and a roll chock 56 of the lower backup roll 54 are accommodated. The shaft portion of the lower work roll 28 for the four-stage cross rolling mill is rotatably supported by the roll chock 55 of the lower work roll 28 for the four-stage cross rolling mill, and the lower backup roll is supported by the roll chock 56 of the lower backup roll 54. The shaft portion of 54 is rotatably supported. However, the roll chock 55 of the lower work roll 28 for the four-stage cross rolling mill is held in the roll chock 56 of the lower backup roll 54 in the same manner as the upper side. Thus, the lower work roll 28 for the four-stage cross rolling mill and the upper work roll 27 for the four-stage cross rolling mill are arranged so as to face each other and cross in a plane parallel to the material to be rolled. ing. The upper work roll 27 for a four-stage cross rolling mill and the lower work roll 28 for a four-stage cross rolling mill are connected to a pinion stand 42 via universal joints 38 and 39, respectively.

  Accordingly, by driving the reduction screws 46 and 47, the strip S of the material to be rolled is reduced via the roll chock 53 of the upper backup roll 51, the upper backup roll 51, and the upper work roll 27 for the four-stage cross rolling mill. It has become.

  In the above-mentioned cross rolling mill 60, as shown in FIG. 3, the upper and lower work rolls 25, 26 for a two-stage cross rolling mill or the like by the action of the screw shafts 13, 14, 15, 16, 21, 22, 23, 24 or Although the cross rotation center in the longitudinal direction of the upper and lower work rolls 27 and 28 for the four-stage cross rolling mill has been described by using both cross systems in which the centers of the driving side and the working side are relatively crossed, respectively. 7, the lower work roll 26 disposed on the lower side of the work rolls is crossed with the driving side or the work side of the upper work rolls 25 and 27 disposed on the upper side among the work rolls as a fulcrum. , 28 may be a single-cross method in which the driving side or the working side different from the fulcrum of the upper work rolls 25 and 27 is used as a fulcrum. By using such a single-cross method, the number of drive mechanisms for crossing the work rolls 25, 26, 27, and 28 can be reduced as compared with the two-cross method, thereby simplifying the structure. And the cost of the cross rolling mill itself can be reduced.

Below, the rolling equipment using the cross rolling mill which concerns on the 1st Example of this invention is demonstrated using figures.
FIG. 8 is a schematic view of rolling equipment using the cross rolling mill according to the first embodiment of the present invention.

  As shown in FIG. 8, the rolling equipment 62 includes a cross rolling mill 60 and a heating furnace 61 arranged on the entry side (one side) of the cross rolling mill 60. Examples of the heating furnace 61 include an electric furnace and a tunnel furnace that heats the material to be rolled in a tunnel, and a winding furnace (coiler furnace) that winds the material to be rolled and applies heat in the furnace. In the rolling equipment 62 having such a configuration, the material to be rolled can be heated in the heating furnace 61, and the heated material to be rolled can be hot-rolled or warm-rolled by the cross rolling machine 60.

  The material to be rolled is repeatedly rolled until it reaches a predetermined thickness. However, when the thickness of the material to be rolled is large, the material to be rolled is rolled by using the cross rolling mill 60 as a two-stage cross rolling mill, and when the sheet thickness of the material to be rolled becomes thinner than a predetermined thickness, cross rolling is performed. The material to be rolled is further rolled using the machine 60 as a four-stage cross rolling mill. That is, the upper and lower work rolls 25 and 26 for the two-stage cross rolling mill and their roll chocks 34 and 35, the upper and lower work rolls 27 and 28 for the four-stage cross rolling mill, the backup rolls 51 and 54, and the roll chocks 52 and 53 thereof. , 55 and 56 are exchanged to roll the material to be rolled. Therefore, both the material improvement of the material to be rolled by large cross rolling and the thickness accuracy improvement in the sheet width direction by micro cross rolling can be performed simultaneously with one rolling mill. Therefore, manufacturing cost can be suppressed by applying such a cross rolling mill 60 to rolling materials, such as a light alloy which has only a small amount of demand.

  Even if the material to be rolled by the cross rolling mill 60 is thin and easy to dissipate heat or due to the physical properties of the material itself, the material to be rolled is immediately heated in the heating furnace 61. Therefore, the material to be rolled can be efficiently rolled, and the manufacturing cost can be reduced.

  Moreover, although demonstrated using the rolling equipment 62 which has arrange | positioned the heating furnace 61 on the one side of the cross rolling mill 60 above, you may arrange | position a heating furnace on both the entrance side and the exit side of the cross rolling mill 60, respectively. . By arranging the heating furnace in this way, even if the material rolled by the cross rolling mill 60 becomes thin and easily radiates heat, or easily radiates heat due to the physical properties of the material to be rolled, Since it can heat, the said to-be-rolled material can be rolled still more efficiently.

  It is useful when rolling a material with a low hardness such as a light alloy.

It is the schematic when using the cross rolling mill which concerns on the 1st Example of this invention as a two-stage cross rolling mill. It is a front view when using the cross rolling mill concerning the 1st example of the present invention as a two-stage cross rolling mill. It is a top view when using the cross rolling mill concerning the 1st example of the present invention as a two-stage cross rolling mill. It is IV-IV arrow sectional drawing in FIG. It is the schematic when using the cross rolling mill concerning the 1st example of the present invention as a four-stage cross rolling mill. It is a front view when using the cross rolling mill concerning the 1st example of the present invention as a four-stage cross rolling mill. It is explanatory drawing when the drive means of a single cross system is applied to the cross rolling mill which concerns on 1st Example of this invention. It is the schematic of the rolling equipment using the cross rolling mill which concerns on the 1st Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed housing 2, 3 Intermediate housing 4 Support apparatus 5 Liner 6, 7 Drive mechanism 8 Drive rod 9, 10, 11, 12 Worm reducer 13, 14, 15, 16 Screw shaft 17, 18, 19, 20 Worm reducer 21, 22, 23, 24 Screw shaft 25 Upper work roll 26 for two-stage cross rolling mill Lower work roll 27 for two-stage cross rolling mill Upper work roll 28 for four-stage cross rolling mill Lower work roll 29 for four-stage cross rolling mill , 30, 31, 32 Hydraulic cylinder 33 Chock clamp 34, 35 Roll chock 38, 39 Universal joint 42 Pinion stand 43 Motor 44, 45 Reduction device 46, 47 Reduction screw 48 Press member 49 Liner 50 Receiving base 51 Upper backup rolls 52, 53 Roll chock 54 Lower backer Roll 55, 56 Roll chock 60 Cross rolling machine 61 Heating furnace 62 Rolling equipment

Claims (3)

An upper intermediate housing supported on an upper portion of the fixed housing in the fixed housing; a lower intermediate housing disposed below the upper intermediate housing and supported on a lower portion of the fixed housing in the fixed housing; Driving means disposed on the entry side and the exit side of the fixed housing, and relatively crossing the upper intermediate housing and the lower intermediate housing;
The upper and lower intermediate housings accommodate a work roll for a two-high rolling mill capable of large crossing and a roll chock thereof, or a work roll and a backup roll for a four-high rolling mill capable of micro-crossing, and a roll chock thereof. Cross rolling machine. A cross rolling machine according to claim 1,
The driving means crosses the upper roll housed in the upper intermediate housing with the driving side or the working side as a fulcrum, and the lower roll housed in the lower intermediate housing is different from the fulcrum of the upper roll. Or the cross rolling machine characterized by being crossed by using a work side as a fulcrum.   A rolling facility characterized in that a heating furnace is arranged on one side or both sides of the cross rolling mill according to claim 1 or 2.

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