CN103118813B - Cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill - Google Patents

Cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill Download PDF

Info

Publication number
CN103118813B
CN103118813B CN201180018331.2A CN201180018331A CN103118813B CN 103118813 B CN103118813 B CN 103118813B CN 201180018331 A CN201180018331 A CN 201180018331A CN 103118813 B CN103118813 B CN 103118813B
Authority
CN
China
Prior art keywords
rolling
roller
calender rolls
intermediate calender
cold
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.)
Active
Application number
CN201180018331.2A
Other languages
Chinese (zh)
Other versions
CN103118813A (en
Inventor
安成晋一
岛谷文久
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.)
Co., Ltd of general sharp special metallurgical technology Japan
Original Assignee
Co Ltd Of General Sharp Special Metallurgical Technology Japan
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=46261527&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN103118813(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Co Ltd Of General Sharp Special Metallurgical Technology Japan filed Critical Co Ltd Of General Sharp Special Metallurgical Technology Japan
Publication of CN103118813A publication Critical patent/CN103118813A/en
Application granted granted Critical
Publication of CN103118813B publication Critical patent/CN103118813B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • 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
    • B21B27/02—Shape or construction of rolls
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • 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
    • 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
    • B21B1/36—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 cold-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/028—Sixto, six-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/06—Width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/02—Roll dimensions
    • B21B2267/06—Roll diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

The present invention is cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill.By making the operation roller minor diameter of 6 grades of roll mills, the rolling carried out with higher rolling rate of the rolling than steel plate hard so far and the steel plate to same rigidity can be realized, and the productivity ratio reduction caused because using the such minor diameter operation roller mill of the multi-high rolling mill of multi roll can not be produced.In the cold-rolling mill (51) that is rolled of the wide metallic plate (1) for more than 1500mm below 1900mm of maximum plate, to have for more than 600mm minimum plate is wide: the operation roller (2) of a pair up and down that rolling stock (1) is rolled; The respectively intermediate calender rolls (3) of a pair up and down of supports work roller (2); Support the reinforcement roller (4) of a pair up and down of intermediate calender rolls (3) respectively; The axial moving device (23) of intermediate calender rolls (3); The bending apparatus (10,11) of operation roller (2) and intermediate calender rolls (3), make the diameter of operation roller (2) in the scope of more than 300mm below 400mm, and make the diameter of intermediate calender rolls (3) in the scope of more than 560mm below 690mm.

Description

Cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill
Technical field
The present invention relates to cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill.
Background technology
Wide at the maximum plate of specification of equipment is in the rolling equipment of about 1500 ~ 1900mm, according to practice so far, be the steel plate that the tandem rolling equipment of 4 grades or the 6 grades roll mills of about 420 ~ 630mm produces ordinary steel, high tension steel in large quantities by operation roller diameter.This situation can be confirmed according to the specification of equipment shown in such as non-patent literature 1.
On the other hand, in order to tackle the rolling of harder steel plate, and then tackle the rolling of higher rolling rate, the operation roller diameter reducing roll mill is effective.Such as, be the representational roll mill of roughly below 200mm as operation roller diameter, have the multi-high rolling mill of the such multi roll recorded in patent document 1.The production of multi-high rolling mill to the stone steel plate of stainless-steel sheet, electromagnetic steel plate etc. of these multi rolls is favourable.
At first technical literature
Patent document
Patent document 1: Japan Patent No. 3034928 publication
Non-patent literature
Non-patent literature 1: Japanese Tie Gang association joint research can cold-strip steel branch can be compiled/the cold-strip steel specification of equipment of Gai Ding China and plant configuration in steel plate portion
Non-patent literature 2: the 101 plastic working lecture coursewares [basis of plate rolling and application-convexity flatness] 62 pages of Fig. 1 .3.2
Summary of the invention
Wide at the maximum plate of specification of equipment is in the rolling equipment of about 1500 ~ 1900mm, be that the tandem rolling equipment of 4 grades or the 6 grades roll mills of about 420 ~ 630mm is produced and is mainly used to the ordinary steel of automobile, the steel plate of high tension steel by operation roller diameter, but in recent years, in the market of high-tensile steel, this demand constantly expands, and, contrast the demand of high-tensile steel harder so far, and then the identical high-tensile steel of hardness is improved constantly with the demand that higher rolling rate is rolled.Like this, in order to tackle the demand of the rolling of harder steel plate, and then in order to tackle the rolling demand of higher rolling rate, consider two kinds of following modes.
First first mode reduces the operation roller diameter of roll mill, is the representational roll mill of below 200mm, there is the multi-high rolling mill of above-mentioned multi roll as operation roller diameter.
But the minor diameter operation roller mill of the multi-high rolling mill of multi roll etc., is not suitable for a large amount of production, cannot expects high production rate.
Second method increases its number of units to the tandem roll mill of specification in the past.Although the rolling power of does not change, by increasing number of units, the rolling power raising that tandem roll mill is overall.That is, the feature of productivity ratio this tandem roll mill high can be maintained, and the rolling of the rolling of harder steel plate and the rolling rate of Geng Gao can be realized.But, increase the number of units of roll mill, the significantly increase of initial outlay can be caused in new construction, the significantly increase of additional investment can be caused in improvement project.
Like this, in above-mentioned rolling equipment in the past, there is the problem points of the productivity ratio reduction caused because using the such minor diameter operation roller mill of the multi-high rolling mill of multi roll, the significantly cost increase caused because setting up number of units etc.
The object of the present invention is to provide a kind of cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill, by making the operation roller minor diameter of 6 grades of roll mills, the rolling that the rolling than steel plate hard so far and the steel plate to same rigidity carry out with higher rolling rate can be realized, and the productivity ratio caused because using the such minor diameter operation roller mill of the multi-high rolling mill of multi roll can not be produced reduce.
Other object of the present invention is to provide a kind of cold-rolling mill, tandem rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill, maintain the high production rate that tandem rolling equipment all the time has, and do not carry out the rolling carried out with higher rolling rate of the rolling than steel plate hard so far and the steel plate to same rigidity with not setting up number of units.
Realizing the 1st technical scheme of above-mentioned purpose, is a kind of cold-rolling mill, to minimum plate wide for more than 600mm and the wide steel plate for more than 1500mm below 1900mm of maximum plate be rolled, it is characterized in that having: the operation roller of upper and lower a pair; Support the intermediate calender rolls of a pair up and down of this operation roller respectively; Support the reinforcement roller of a pair up and down of this intermediate calender rolls respectively; The axial moving device of this intermediate calender rolls; The bending apparatus of this operation roller and this intermediate calender rolls, makes the diameter of this operation roller in the scope of more than 300mm below 400mm, and makes the diameter of described intermediate calender rolls in the scope of more than 560mm below 690mm.
The present inventor's can holding plate shape the combination of roller diameter contact pressure between rolls can included in allowed band (limit) be studied well the cold-rolling mill of 6 grades, consequently find the combination of operation roller diameter as described above and intermediate calender rolls diameter, and found to obtain rolling rate high than ever thus.Consequently, the rolling carried out with higher rolling rate of the rolling than steel plate hard so far and the steel plate to same rigidity can be realized.
In addition, owing to being 6 grades of roll mills, therefore, it is possible to prevent the productivity ratio caused because using the such minor diameter operation roller mill of the multi-high rolling mill of multi roll from reducing.
And, by using operation roller little than ever, when forming tandem rolling equipment when using at least one cold-rolling mill of the present invention, the high production rate that tandem rolling equipment in the past has can be maintained, and realize while number of units can not be set up the rolling carried out with higher rolling rate of the rolling than steel plate hard so far and the steel plate to same rigidity.
2nd technical scheme, on the basis of above-mentioned 1st technical scheme, is characterized in that, as the drive unit of described roll mill, is provided with operation roll driving apparatus, operation roller described in its rotary actuation.
Driven by operation roller, with intermediate calender rolls or strengthen roller indirect driving compared with, there is not the worry of the slippage between roller.
In addition, there occurs between the operation roller that plate ruptures, the steel plate of fracture is nipped upper and lower in a folded fashion or be wound on operation roller, when operation roller sharply stops, by arranging overload protective device on operation roll driving apparatus, overload protective device can work immediately, and roll mill is stopped.
And owing to there is not the driving circumferential force to operation roller produced when intermediate calender rolls drives, thus operation roller therefore to horizontal direction flexure, can not can play the original shape controlling ability that roll mill has.
3rd technical scheme is on the basis of above-mentioned 2nd technical scheme, and it is characterized in that, described operation roll driving apparatus has the main shaft of gear type, and the driving force of motor is passed to described operation roller by it.
Thus, even if be identical major axis diameter, the transmitting torque larger than cross pin-type can also be obtained.
4th technical scheme is on the basis of the above-mentioned 2nd or the 3rd technical scheme, and it is characterized in that, described operation roll driving apparatus has overload protective device, and it is for preventing the breakage of described main shaft.
Thus, there occurs between the operation roller that plate ruptures, the steel plate of fracture is nipped upper and lower in a folded fashion or be wound on operation roller, under operation roller produces overladen situation, overload protective device can work immediately, can ensure that main shaft will make roll mill stop damagedly.
5th technical scheme is on the basis of arbitrary technical scheme of above-mentioned 1st ~ 4th technical scheme, it is characterized in that, also have roller bias unit, it can make the roller of the one party of described operation roller and described intermediate calender rolls enter side and even go out lateral deviation to put to rolling direction relative to the axle core of the roller of the opposing party.
Thereby, it is possible to suppress little as far as possible by the flexure of the horizontal direction of operation roller, stable operation can be carried out.
6th technical scheme, on the basis of above-mentioned 1st technical scheme, is characterized in that, as the drive unit of described roll mill, is provided with the intermediate calender rolls drive unit described intermediate calender rolls being carried out to rotary actuation.
Thus, usually, intermediate calender rolls diameter design must be larger than operation roller diameter, and therefore the drive shaft of drive unit also can design in the scope of intermediate calender rolls diameter, therefore, it is possible to be made into enough intensity for required torque.
7th technical scheme is on the basis of above-mentioned 6th technical scheme, and it is characterized in that, described intermediate calender rolls drive unit has the main shaft of cross pin-type, and the driving force of motor is passed to described intermediate calender rolls by it.
Thus compared with when use main gear shaft, roll driving apparatus is more cheap.
8th technical scheme is on the basis of the above-mentioned 6th or the 7th technical scheme, it is characterized in that, also have roller bias unit, it can make the roller of the one party of described operation roller and described intermediate calender rolls enter side and even go out lateral deviation to put to rolling direction relative to the axle core of the roller of the opposing party.
Thereby, it is possible to suppress little as far as possible by the flexure of the horizontal direction of operation roller, stable operation can be carried out.
9th technical scheme is a kind of tandem rolling equipment, and it has roll mill row, and this roll mill row have multiple stage roll mill, and it is characterized in that, described multiple stage roll mill comprises the cold-rolling mill described in any one technical scheme of at least one the above-mentioned 1st ~ 8th.
The roll mill of described multiple stage also can be all the cold-rolling mill described in any one technical scheme of the above-mentioned 1st ~ 8th.
Thereby, it is possible to the high production rate that maintenance tandem rolling equipment in the past has, and carry out while number of units can not be set up the rolling of steel plate harder than ever, and the steel plate of same rigidity also can be rolled with higher rolling rate.
10th technical scheme is a kind of reversible rolling equipment, and it has at least one reversible rolling machine, it is characterized in that, described reversible rolling machine comprises the cold-rolling mill described in any one technical scheme of at least one the above-mentioned 1st ~ 8th.
Thus, in reversible rolling equipment, the rolling carried out with higher rolling rate of the rolling than steel plate hard so far and the steel plate to same rigidity can be realized, and can prevent the productivity ratio caused because using the such minor diameter operation roller mill of the multi-high rolling mill of multi roll from reducing.
11st technical scheme is a kind of remodeling method of rolling equipment, and this rolling equipment has one or more roll mill, it is characterized in that, at least one roll mill is changed to the cold-rolling mill described in any one technical scheme of the above-mentioned 1st ~ 8th.
Thus, when rolling equipment is tandem rolling equipment, the high production rate that tandem rolling equipment in the past has can be maintained, and carry out the rolling of steel plate harder than ever while number of units can not be set up, and the steel plate of same rigidity also can be rolled with higher rolling rate.
In addition, when rolling equipment is reversible rolling equipment, existing equipment can be utilized, realize the rolling carried out with higher rolling rate of the ratio rolling of steel plate hard so far and the steel plate to same rigidity.
12nd technical scheme is a kind of method of operation of cold-rolling mill, it is characterized in that, uses the cold-rolling mill described in any one technical scheme of the above-mentioned 1st ~ 8th, with higher than 12% the rolling of rolling rate described in steel plate.
The effect of invention
According to the present invention, by making operation roller minor diameter, the rolling carried out with higher rolling rate of the rolling than steel plate hard so far and the steel plate to same rigidity can be realized, and can prevent the productivity ratio caused because using the such minor diameter operation roller mill of the multi-high rolling mill of multi roll from reducing.
In addition, according to the present invention, the high production rate that tandem rolling equipment in the past has can be maintained, and carry out the rolling of steel plate harder than ever while number of units can not be set up, and the steel plate of same rigidity also can be rolled with higher rolling rate.
Accompanying drawing explanation
Fig. 1 is the side view of 6 grades of roll mills.
Fig. 2 represents the section direction view in the A direction of Fig. 1.
Fig. 3 represents the section direction view in the B direction of Fig. 1.
Fig. 4 represents the maximum load from the view point of guaranteeing good plate shape, when combining various intermediate calender rolls diameter to each operation roller, can the figure of the limit load of holding plate shape well.
Fig. 5 represents at that obtained by Fig. 4, each operation roller diameter with the combination relative to the intermediate calender rolls diameter of operation roller the best, according to the contact between the roller that the intensity by roller allows, is obtained the figure of the result of the rolling load that can allow by simulation.
Fig. 6 represents in that obtained by Fig. 4, each operation roller diameter with combination relative to the intermediate calender rolls diameter of operation roller the best, and adding Fig. 5 can the figure of the rolling load of the limit of retaining plate shape well.
Fig. 7 is when load the permission rolling load obtained according to Fig. 6 and is rolled, and obtains the rolling rate obtained with each operation roller diameter, and be appended to the figure of Fig. 6 by simulation.
Fig. 8 represents to make intermediate calender rolls constant diameter be the intermediate calender rolls diameter of a certain value when operation roller diameter is changed and the figure of the result of study identical with Fig. 7 of the combination of each operation roller diameter.
Fig. 9 be represent by wide for plate become 600mm with 1900m when the figure of each operation roller diameter and the result of study identical with Fig. 7 of the combination of best intermediate calender rolls diameter.
Figure 10 represents figure number of units needed for the situation of the situation of above-mentioned operation roller diameter 340mm and operation roller 475mm in the past being compared to the result of research in the rolling of 780MPa high-tensile steel.
Figure 11 represents the figure rolling rate of each of the situation of above-mentioned operation roller diameter 340mm and the situation of operation roller 475mm in the past and accumulation rolling rate being compared to the result of research in the rolling of 780MPa high-tensile steel.
Figure 12 to represent in the rolling of 1180MPa high-tensile steel the figure similarly number of units needed for the situation of operation roller diameter 340mm and the situation of operation roller 475mm in the past being compared to the result of research.
Figure 13 represents the figure similarly situation of operation roller diameter 340mm and the rolling rate of each of the situation of operation roller 475mm in the past and accumulation rolling rate being compared to the result of research in the rolling of 1180MPa high-tensile steel.
Figure 14 is the figure of the drive system of the operation roller type of drive observed from roll mill side.
Figure 15 is the summary longitudinal section of the main shaft of gear type.
Figure 16 A is the summary longitudinal section of the main shaft representing cross pin-type.
Figure 16 B is the A-A line sectional view of Figure 16 A.
Figure 17 is the figure representing the external diameter of main spindle coupling and the relation of maximum delivered moment of torsion.
Figure 18 A is the figure of the general configuration in the shaft coupling portion of the main shaft representing upper and lower a pair.
Figure 18 B is the figure of the configuration representing the shaft coupling portion can improving main axe intensity.
Figure 19 A is the figure of the operation roll driving apparatus representing the fluid pressure type torque limiter being provided with king post system as overload protective device.
Figure 19 B is the figure of the operation roll driving apparatus representing the fluid pressure type torque limiter being provided with coupling type as overload protective device.
Figure 19 C represents the figure as overload protective device, the shaft coupling output shaft of gear-box being connected to motor being arranged to the structure of safety pin.
Figure 20 A is the figure representing operation roller biasing means.
Figure 20 B is the figure representing intermediate calender rolls biasing means.
Figure 21 is the figure of the drive system of the intermediate calender rolls type of drive observed from roll mill side.
Figure 22 is the figure of the embodiment of the tandem rolling equipment representing use cold-rolling mill of the present invention and form.
Figure 23 is the figure of the embodiment of the reversible rolling equipment representing use cold-rolling mill of the present invention and form.
Figure 24 is the figure of the transformation example of the tandem rolling equipment representing use cold-rolling mill of the present invention and carry out.
Figure 25 is the figure of other transformation example of the tandem rolling equipment representing use cold-rolling mill of the present invention and carry out.
Figure 26 is the figure representing good plate shape.
Figure 27 is the figure representing the plate shape that can not be called good plate shape.
Detailed description of the invention
In the past, as described above, general steel plate and high-tensile steel owing to being mainly used in automobile require a large amount of production, therefore, use rolling equipment roller being longitudinally configured to 4 grades of row or the tandem of 6 grades, as described above, its operation roller diameter was about 420 ~ 530mm in the past.But, the rolling demand contrasting high-tensile steel hard so far improves constantly, and then improves constantly, in order to tackle these demands the demand that the high-tensile steel of same rigidity is rolled with higher rolling rate, in tandem roll mill, need compared with the past by operation roller minor diameter.
Here, the trend of the minor diameter of the tandem roll mill as background of the present invention and present situation are described.
Use the fact of the operation roller diameter of about 420 ~ 530mm in the past as previously mentioned all the time, but historically see, operation roller diameter is all changing every year, and as shown in non-patent literature 2, there is the trend of minor diameter.Exactly because the market demand of the rolling stock that this trend should be thinner, harder improves constantly.Even as ordinary steel and the high tension steel of object of the present invention; when being used in automobile and being used; because worldwide ground environmental protection consciousness improves; so; seek the lightness of the car body of the object for raising oil consumption performance and getting both of improving for the intensity of the object of the security guaranteed when colliding, thin, hard requirement is constantly strengthened.Therefore, in order to respond such demand, the minor diameter of the operation roller of roll mill is inevitable trend, but the fact is the scope still resting on foregoing operation roller diameter.
As its main cause, think in the past always abundant not to the research of the minor diameter of operation roller of tandem roll mill and the relation of the rolling power of roll mill.Invention people are conceived to the minor diameter of operation roller and the rolling power of roll mill of tandem roll mill, the impact brought the contact between shape controlling and roller operation roller diameter and rolling rate are synthetically studied, consequently, a new opinion is obtained: the scope that there is the operation roller diameter an of the best in rolling power.And confirm the following fact according to this opinion: operation roller can be made compared with putting into practice to realize the minor diameter of 20 ~ 25% in the past.
Below, the derivation being conceived to the best operation roller diameter of minor diameter of the present invention is described in detail.
First, use Fig. 1 ~ Fig. 3 that the formation of the cold-rolling mill that the present invention relates to is described.Fig. 1 represents the side view of 6 grades of roll mills, Fig. 2 and Fig. 3 represents the section direction view in A, B direction of Fig. 1 respectively.
As shown in Figure 1,6 grades of roll mills 51 have: directly contact with metallic plate and rolling stock (steel plate) 1 and the operation roller 2 of a pair be up and down rolled it; Support the intermediate calender rolls 3 of a pair up and down of this operation roller 2 respectively; Support the reinforcement roller 4 of a pair up and down of this intermediate calender rolls 3 respectively.Bearing housing 8 and bearing housing 9 is separately installed with at the roller end of operation roller 2 and intermediate calender rolls 3, as shown in Figure 2, be provided with the power of vertical direction is acted on and the operation bending device 10 that makes each roller bend thus and middle roll bend device 11 to these bearing housings 8 and bearing housing 9.And, be the structure supported via the bearing housing 6 carrying out with housing 5 strengthening roller 4.
Be provided with the hydraulic pressure rolling device 7 as rolling mechanism in the bottom of housing 5, make the bearing housing 6 of lower reinforcement roller 4 move up and down thus be rolled rolling stock 1 by this rolling mechanism.
In addition, operation bending device 10 can be given operation roller increases bending and reduces bending.
In addition, on the intermediate calender rolls 3 of upper and lower a pair, the mode that can move axially along roller is provided with roller mobile device 23 (Fig. 3).Use Fig. 3 that the example of this mobile device 23 is described.The bearing housing 9 of intermediate calender rolls 3 is clamped by intermediate calender rolls bias unit 19, and this intermediate calender rolls bias unit 19 is assembled on play block 12, and this play block 12 is entrenched on balance weight 17 and also can moves axially along roller.Here, arranging intermediate calender rolls bias unit 19 is to make intermediate calender rolls 3 move in the horizontal direction thus changing and the relative position of operation roller 2, and the details of the structure of intermediate calender rolls bias unit 19, object, effect is aftermentioned.The play block 12 of driving side and the holding plate 14 of middle roller bearing box 9 action through hydraulic cylinder 15 and link, and the play block 12 of fore side and the play block 12 of driving side are linked by stay 18.Thus, intermediate calender rolls 3 is integrated with play block 12 one-tenth.And, the traversing carriage 24 be fixed on housing 5 is provided with hydraulic cylinder 16, and this hydraulic cylinder 16 links with the play block 12 of driving side.According to such formation, hydraulic cylinder 16 can be driven to make intermediate calender rolls 3 and play block 12 be moved upward to position freely at roll shaft thus.Especially owing to being built-in with middle roll bend device 11 in intermediate calender rolls bias unit 19, therefore following characteristics is possessed: even if make intermediate calender rolls 3 move axially along roller, and/or intermediate calender rolls 3 is moved in the horizontal direction, the application point of bending force also can not change.
And, in the present embodiment, as shown in Figure 1, at the roller end of intermediate calender rolls 3, be attached to inclined-plane (chamfer) 3a of tapering about the 1000R in usual front end.Distance between the starting point of this inclined-plane 3a and the end of rolling stock 1 is called UC δ.When the starting point of inclined-plane 3a is positioned at the outside of plate end, with on the occasion of representing above-mentioned UC δ, represent with negative value when being positioned at inner side.
Below, the result simulated as model by the roll mill formed above 51 is described.
First, " the good plate shape " that occur in following explanation is defined.In the present invention, various change is carried out in the combination wide to operation roller diameter, intermediate calender rolls diameter, plate, thus the simulation of strip crown shape after being rolled, the load that this strip crown shape can meet the limit of following condition is shown as " load that can keep the limit of shape well ", and plate shape is now defined as " good plate shape ".
That is,
H (0) >=h (x) (0≤x≤b) ... formula 1
Further,
δ h (x)=0 (0 < x≤2/3b) ... formula 2
Here,
X: the coordinate of the plate width direction being initial point with the wide central portion of plate
B: the half of the wide B of plate
The side panel of h (x): x is thick
The strip crown amount (=h (0)-h (x)) (mm) of δ h (x): x
Concrete example shown in Figure 26 and Figure 27.So-called good plate shape is that Figure 26 is such, relative to central thickness of slab, and other part identical or thin (formula 1), and be from the wide central authorities of plate until the location plate convexity of the 2/3 strip crown shape that to be zero (formula 2) such.On the contrary, as shown in figure 27, relative to central thickness of slab, other part is thick, or the shape that compared with the position of the central authorities 2/3 wide with distance plate, strip crown non-vanishing (formula 2) is such from the position near the wide central authorities of plate, then not talkative strip crown shape is good.
Below analog result is described.The high-tensile steel of the wide 1650mm of plate is used as sheet material.First, Fig. 4 be represent when various intermediate calender rolls diameter is combined with to each operation roller, can the figure of the limit load of holding plate shape well.Transverse axis is intermediate calender rolls diameter, and the longitudinal axis is rolling load (being the wide load of per unit plate: ton/mm here).In each situation of operation roller diameter 250mm, 300mm, 330m, 340mm, 380mm, 400mm, 450mm, 475mm, intermediate calender rolls diameter is changed, and calculate can the rolling load of the limit of holding plate shape well.When situation and the 340mm of operation roller diameter 330mm, there are differences hardly, therefore, by it and be a display.Consequently find following situation.Wherein, the numeric representation in the parantheses in figure is for the intermediate calender rolls diameter of the best of each operation roller diameter.
1. such as, when operation roller diameter is 475mm, when making intermediate calender rolls diameter increase successively from 500mm, can find out: until 580mm, the maximum of the load of holding plate shape well can all become large, but once more than 580mm, even if then continue to increase intermediate calender rolls diameter, can the maximum of the load of holding plate shape well also not change, the effect increasing intermediate calender rolls diameter becomes flat.Under such circumstances, in the operation of reality, consider the initial cost that roller makes and subsequent operating cost, roller diameter selectes value little as far as possible.In addition, if become large due to roller diameter, the size of roll mill entirety also can be caused to become large, therefore not preferred in equipment investment.Therefore, the intermediate calender rolls diameter of the best when operation roller diameter is 475mm is 580mm.Operation roller about other is also to find out best intermediate calender rolls diameter equally respectively.
2., along with operation roller diameter diminishes, best intermediate calender rolls diameter becomes large, this be due to: operation roller diameter is less, then the rigidity for the operation roller self of load can decline, and therefore, needs to supplement the larger-diameter intermediate calender rolls that this rigidity reduces.
3. along with operation roller diameter diminishes, can well holding plate shape load exist reduce trend.This be due to: along with operation roller diameter diminishes, the effect of operation bending becomes and only involves near plate end.
Next, at each operation roller diameter obtained according to Fig. 4 with the combination for the intermediate calender rolls diameter of the best of operation roller, according to the contact (hertz stress) between the roller that the intensity by roller allows, the rolling load (load that, per unit plate is wide: ton/mm) that can allow is obtained here by simulation.Its result as shown in Figure 5.Transverse axis is operation roller diameter, and the longitudinal axis is rolling load (load that per unit plate is wide: ton/mm).In addition, in this research, if become large due to the contact (hertz stress) between roller, then the problem that the surface that can produce roller owing to rotating fatigue is peeled off (cause and peel off) etc., therefore based on preventing the viewpoint of this problem from carrying out.
According to this figure, along with operation roller diameter diminishes, the rolling load that can allow is become large trend.Usually, the limit of the contact of this roller and the hardness relation of roller are very large, and hardness is higher, and the contact that can allow is higher.Usually, with strengthen roller, intermediate calender rolls, operation roller order improve hardness make, therefore, it is possible to allow contact with this order raise.On the contrary, the contact between roller is determined by the combination (geometrically) of roller diameter, and the less contact then between roller of diameter is higher.In the case of fig. 5, as being illustrated with Fig. 4, for the best intermediate calender rolls diameter for each operation roller diameter, less then this best intermediate calender rolls diameter of operation roller diameter is larger.This is that in Fig. 5, operation roller diameter diminishes, the main cause that the load that can allow more increases.In other words, to the intensity of the contact between each roller and each roller study as a result, the intensity strengthening roller becomes crucial, intermediate calender rolls diameter is larger, and the contact between intermediate calender rolls and reinforcement roller more reduces, therefore, become the such trend of Fig. 5 and show.
Further, to the combination of that drawn by Fig. 4, each operation roller diameter and the intermediate calender rolls diameter for the best of operation roller, calculating can the rolling load of the limit of retaining plate shape well, and is appended in Fig. 5 and obtains Fig. 6.According to Fig. 6, draw the permission rolling load becoming standard in the rolling of reality.That is, in two curves, that less numerical value is the permission rolling load of this operation roller diameter.Such as, when operation roller diameter is 475mm, according to the limit of contact, allow rolling load to be about 1.22ton/mm, when operation roller diameter is 250mm, according to the limit of plate shape, allow rolling load to be about 0.95ton/mm.
The rolling rate obtained by each operation roller diameter when obtaining by simulation the permission rolling load obtained by the way at load and be rolled, and be appended to Fig. 6 thus obtain Fig. 7.The longitudinal axis on diagram right side is rolling rate (%).
Can find out according to this figure, along with operation roller diameter diminishes from 475mm, the rolling rate obtained becomes large gradually, soon, near operation roller diameter 340mm, becomes peak value.If then reduce operation roller diameter further, rolling rate on the contrary reduces gradually.And can find out: in the scope that operation roller diameter is 300 ~ 400mm, rolling rate is about about 14.5 ~ 15% and almost equal, but when operation roller diameter is less than 300mm and when being greater than 400mm, no matter in which kind of situation, rolling rate all reduces.Operation roller diameter is the rolling rate about 14.5 ~ 15% drawn in the scope of 300 ~ 400mm, about exceeds about 21 ~ 25% compared with in the of 12% with the rolling rate obtained during the operation roller diameter used in the past.Like this, when each operation roller diameter, from can the rolling load of retaining plate shape well the limit and be subject to two viewpoints of the limit of rolling load of restriction of the contact between roller, the result of synthetically carrying out studying is, found obtaining in high rolling rate this point, the operation roller diameter of 300 ~ 400mm is suitable.
In addition, when select operation roller diameter peak value 340mm ± 5%, operation roller diameter is about 320 ~ 360mm, can obtain in this situation with the rolling rate of peak value almost equal about 15.0% high rolling rate.Therefore, obtaining in higher rolling rate this point, it is best for making operation roller diameter be the scope of 320 ~ 360mm (about 340 ± 5%).
Be more than the result of study of the limit rolling load (Fig. 5) of contact pressure between rolls to the combination based on each operation roller diameter and best intermediate calender rolls diameter, the limit rolling load (Fig. 6) of plate shape and rolling rate (Fig. 7), but intermediate calender rolls diameter also can not be optimum value.Namely, as described above, the scope of suitable operation roller diameter of the present invention is 300 ~ 400mm, and operation roller diameter is the intermediate calender rolls diameter of the best of the situation of 300mm is 630mm, operation roller diameter is the intermediate calender rolls diameter of the best of the situation of 400m is 600mm, as shown in Figure 4.And, when operation roller diameter is 400mm, if intermediate calender rolls diameter is more than 600mm, then the effect equal with the situation of 600mm can be obtained.In other words, for the operation roller of 300 ~ 400mm, in order to the diameter obtaining the intermediate calender rolls of the minimum needed for maximum effect is 630mm larger in 600mm and 630mm.On the other hand, there is use mobility scale in roller, it is generally about 10%.Accordingly, 1.1 times of intermediate calender rolls 630mm is about 690mm, and therefore, the upper limit for the intermediate calender rolls diameter of operation roller diameter 300 ~ 400mm is that 630 ~ 690mm is for best.
Fig. 8 represents to make intermediate calender rolls constant diameter be the intermediate calender rolls diameter of a certain value when operation roller diameter is changed and the figure of the result of study identical with Fig. 7 of the combination of each operation roller diameter.Show the result that intermediate calender rolls diameter is the situation of 530mm, 550mm, 560mm, 630mm, 690mm.According to these, when intermediate calender rolls diameter changes in the scope of 630mm ~ 690mm, the limit rolling load of contact pressure between rolls, the limit rolling load of plate shape and rolling rate are identical with the situation of the combination of the intermediate calender rolls diameter of the best as described above, namely can obtain the peak value of rolling rate in the scope that operation roller diameter is 300 ~ 400m.In addition, when the lower limit for determining intermediate calender rolls diameter, if arrange " in the scope that operation roller diameter is 300 ~ 400mm; if compare with the rolling rate obtained by best of breed (operation roller diameter 475mm and intermediate calender rolls diameter 580mm) in the past about improve 12% intermediate calender rolls diameter then effective " determinating reference, then the lower limit of intermediate calender rolls diameter is 560mm.Here, according to Fig. 8, when intermediate calender rolls diameter is 550mm, operation roller diameter is near 300mm, and the rolling rate obtained is less than 12% and is thus judged as discomfort.
According to more than, the scope being suitable for the intermediate calender rolls diameter of operation roller diameter 300 ~ 400mm is 560 ~ 690mm.
In addition, Fig. 4 ~ Fig. 8 makes sheet material be high-tensile steel, makes its plate wide to be result when 1650mm, and Fig. 9 is the figure of the result of study identical with Fig. 7 of the combination of the intermediate calender rolls diameter representing each operation roller diameter when wide for the plate 600mm of becoming and 1900mm being carried out and the best.According to these, change within the scope of 600mm ~ 1900mm even if plate is wide, the limit rolling load of contact pressure between rolls, the limit rolling load of plate shape and rolling rate are still wide with plate is that the situation of 1650mm is identical, can obtain the trend of high rolling rate in the scope of operation roller diameter 300 ~ 400mm.
Wherein, the diameter of the reinforcement roller used in current simulation is the wide maximum of plate is the 1370mm always adopted in the roll mill of about 1500 ~ 1900mm.But, this is only an example, in the roll mill that aforementioned panels is wide, as long as according to the recess diameter of reinforcement roller of required maximum rolling load and the size of neck bearing can be supported and the reinforcement roller diameter determined, even reinforcement roller diameter in addition also has no relations.Equally in this case, the rolling load of the limit of combination and the trend of the change of rolling rate of the operation roller diameter of Fig. 4 ~ as shown in Figure 9 and the intermediate calender rolls diameter of the best on the other side do not change, when comparing with identical reinforcement roller diameter, identically with the situation of the reinforcement roller diameter using 1370mm, compare with the combination of intermediate calender rolls diameter with operation roller diameter in the past, the present invention can be rolled with higher rolling rate.
Next, the effect that the roll mill of operation roller rolling rate in the scope of aforesaid operation roller diameter 300 ~ 400mm almost being become the 340mm of peak value is applicable to the situation of tandem rolling equipment is described.Best intermediate calender rolls diameter is now 620mm according to Fig. 4.On the other hand, for the prior art contrasted, be the tandem rolling equipment of operation roller diameter 475mm, best intermediate calender rolls diameter is now 580mm according to Fig. 4 equally.
First, Figure 10 is in the rolling of 780MPa high-tensile steel, number of units needed for the situation of the situation of above-mentioned operation roller diameter 340mm and operation roller 475mm is in the past compared to the result of research.As shown in Figure 6, if observe the permission rolling load that determined by contact and can that less numerical value in the limit rolling load of holding plate shape well, being 1.22ton/mm when then operation roller diameter is 475mm, is 1.13ton/mm when operation roller diameter is 340mm.Using these numerical value as the permission rolling load of each operation roller diameter, the standard of restriction is set.Consequently, when operation roller diameter 475mm, roll mill is 5 and can carries out desired rolling in permission rolling load.On the other hand, when operation roller diameter 340mm, can have relative to permission load when 5 and more than needed carry out desired rolling, even 4 of few 1 also can be carried out desired rolling.
Here, Tu11Zhong, to the present invention with to compare in the past and to illustrate rolling rate and the accumulation rolling rate of in Figure 10 each.In addition, represent the present invention be total 4 situation, be the situation of total 5 in the past.First, bar chart is the rolling rate of each, and oblique line represents the present invention, and hollow expression in the past.Observe this figure known, in each, the present invention can obtain the rolling rate of than ever high 4 ~ 5%.On the other hand, broken line graph be by each platform after accumulation rolling rate, solid line represents the present invention, and dotted line represents in the past.Relatively, when have passed 3, the present invention can obtain the accumulation rolling rate of than ever many about 10%, and then becomes the result that can reduce number of units.
Then, Figure 12 to represent in the rolling of 1180MPa high-tensile steel the figure similarly number of units needed for the situation of operation roller diameter 340mm and the situation of operation roller 475mm in the past being compared to the result of research.First, when operation roller diameter 475mm, when for being rolled with 5, if the rolling load of each is suppressed in permissible value successively from prime, then have to increase the last the 5th middle load, result cannot carry out desired rolling.Therefore, if number of units is increased to 6, then the load of all number of units can be suppressed, in permissible value, can be rolled.On the other hand, when operation roller diameter 340mm, can desired rolling be carried out with whole 5, the larger advantage of few 1 compared with operation roller diameter 475mm in the past can be obtained.Here, represent in fig. 13 and the present invention and the result compared in the past are carried out to the rolling rate of each in Figure 12 and accumulation rolling rate identically with Figure 11.Wherein, represent that the present invention is the situation of total 5, be the situation of total 6 in the past.First, bar chart is the rolling rate of each, and oblique line represents the present invention, and hollow expression in the past.As can be seen here, in each, the present invention can obtain the rolling rate of than ever high 2 ~ 3%.On the other hand, broken line graph be by each platform after accumulation rolling rate, solid line represents the present invention, and dotted line represents in the past.Compare known to both, when have passed 4, the present invention can obtain the accumulation rolling rate of than ever many about 8%, and then becomes the result that can reduce number of units.
Above, according to the present invention, compared with the past, following larger advantage can be enjoyed: can be rolled with higher rolling rate, and then the number of units of tandem rolling equipment can also be reduced.
In cold-rolling mill of the present invention, as the type of drive of roll mill, any one that operation roller drives, intermediate calender rolls drives can be adopted, but preferably adopt operation roller to drive according to following reason.
In operation roller drives, owing to carrying out Direct driver to the operation roller of rolled plate, therefore with intermediate calender rolls or strengthen roller indirect driving compared with, there is not the worry of the slippage between roller.In addition, in the viewpoint in the operation in tandem rolling equipment, such as, when there occurs plate fracture, between the operation roller that the steel plate of fracture is nipped upper and lower sometimes in a folded fashion, or be wound on operation roller, operation roller can sharply stop.If become such state, when operation roller drives, immediately to (decelerator) and then the drive system effect overload to main shaft transmitting torque from motor to gear-box, therefore, be arranged at the overload protective device work of the midway of drive system, moment of torsion to the transmission of operation roller is blocked, and roll mill can stop.Here, as overload protective device, exist fluid pressure type torque limiter and use be called as safety pin once effect overload, carry out the method etc. of the pin cut off.And as another advantage that operation roller drives, owing to carrying out Direct driver to operation roller, therefore there is not the driving circumferential force to operation roller produced when intermediate calender rolls drives, thus therefore operation roller can not bend to horizontal direction.If operation roller to horizontal direction flexure, then can not play the original shape controlling ability that roll mill has, become larger advantage in product quality.
On the other hand, in intermediate calender rolls drives, usually, intermediate calender rolls diameter design must be larger than operation roller diameter, and therefore drive shaft also can design in the scope of intermediate calender rolls diameter, therefore, it is possible to produce enough intensity for required torque.But on the contrary, when plate fracture occurs as described above, sharply stop even if there is operation roller, can there is slippage while continue to rotate in the intermediate calender rolls driven, the damage of each roller is very large between operation roller.When especially there is plate fracture in tandem roll mill, can impact multiple stage.In addition, when intermediate calender rolls drives, owing to driving circumferential force to act on operation roller, therefore this driving circumferential force becomes the reason that operation roller is bent to horizontal direction.If operation roller bends to horizontal direction, then can cause the deterioration of plate shape, in product quality, become larger problem.
Therefore, in the present embodiment, pay the utmost attention to the advantage in operation, the type of drive as roll mill adopts operation roller to drive.
Next, the main shaft used in driving operation roller is described.
First, the drive system of Figure 14 and Figure 15 to the cold-rolling mill of present embodiment is utilized to be described.Figure 14 is the figure of the drive system of the operation roller type of drive observed from roll mill side, Figure 15 is the summary longitudinal section of the main shaft of gear type.
In Figure 14, cold-rolling mill 51 has operation roll driving apparatus 21 as its drive unit.Operation roll driving apparatus 21 has main shaft 20, gear-box 52, shaft coupling 53, the motor 54 of upper and lower a pair, the driving force of motor 54 is slowed down with the ratio of regulation by gear-box 52 or speedup or do not carry out speed change, and absorbed the displacement of short transverse by the main shaft 20 of upper and lower a pair, and be passed to the operation roller 2 of upper and lower a pair.
As shown in figure 15, the main shaft 20 of upper and lower a pair has jackshaft 61 respectively, is located at the gear coupling portion 62,63 at the two ends of jackshaft 61, and gear coupling portion 62,63 possesses respectively: the urceolus 64,65 being formed with internal tooth 64a, 65a; Be formed with the inner core 66,67 of external tooth 66a, the 67a engaged with internal tooth 64a, 65a of urceolus 64,65.The axial recess 68,69 of ellipse section is formed in the side contrary with jackshaft of urceolus 64,65, be inserted into recess 68,69 by the axle head of the output shaft by the axle head of operation roller 2 and gear-box 52, thus gear coupling portion 62,63 is connected with the output shaft of operation roller 2 and gear-box 52 respectively.
Figure 16 A and Figure 16 B is the figure of the main shaft representing cross pin-type in order to compare, Figure 16 A is summary longitudinal section, and Figure 16 B is the A-A line sectional view of Figure 16 A.The main shaft 20A of cross pin-type, there is at the two ends of jackshaft 71 cross pin shaft coupling portion 72,73, cross pin shaft coupling portion 72,73 possesses cross pin 76, the axial recess 74,75 of ellipse section is formed in the side contrary with jackshaft in cross pin shaft coupling portion 72,73, be inserted into recess 74,75 by the axle head of the output shaft by the axle head of operation roller 2 and gear-box 52, thus cross pin shaft coupling portion 72,73 is connected with the output shaft of operation roller 2 and gear-box 52 respectively.
The maximum delivered moment of torsion of main shaft of operation roller in unidirectional tandem roll mill in the past shown in Figure 17 and the relation of the external diameter of main spindle coupling.Solid line represents gear type main shaft, and dotted line represents cross pin-type main shaft.According to this figure, if the external diameter in identical shaft coupling portion, then gear type has the transmitting torque of about 1.7 times compared with cross pin-type.
In the present embodiment, adopt operation roller to drive operation roller minor diameter, consequently, main shaft also realizes minor diameter, although therefore main shaft is that minor diameter is applicable to the large gear type of transmitting torque.
Next, use Figure 18 A and Figure 18 B to when guaranteeing that the method for main axe intensity is described by when operation roller minor diameter.Figure 18 A represents the general configuration in the gear coupling portion of the main shaft of upper and lower a pair, and Figure 18 B represents the configuration in the gear coupling portion can improving main axe intensity.In figure, chain-dotted line is the gear centre position in gear coupling portion.
Usually, as shown in Figure 18 A, upper and lower a pair main shaft 20 roll mill side gear coupling segment with make the axial location in gear coupling portion 62 up and down mode involutory, that gear centre position is unanimous between the higher and lower levels formed.
Here, in order, the axle base of lower main axis is L, makes the diameter in shaft coupling portion 62 be D1.
To this, in the present embodiment, as shown in figure 18b, stagger up and down with the position of the gear coupling portion 62A by the main shaft 20A of upper and lower a pair and configure alternately, the mode that staggers up and down in gear centre position formed gear coupling part.
Here, in order, the axle base of lower main axis is L, makes the diameter of shaft coupling portion 62A be D2.
According to this formation owing to avoiding the upper and lower interference of gear coupling portion 62A, even if therefore the axle base L of upper lower main axis is identical, but gear coupling portion 62A can be made with in the past compared with (Figure 18 A), to become major diameter (D2 > D1), the most weak portion of main shaft and the intensity of gear coupling portion 62A can be improved.
Under the situation of the axle base reducing lower main axis of having to, main axe intensity can be guaranteed by this point at the minor diameter because of operation roller, thus very effective.
In addition, in this as embodiment, show the example of the main shaft of gear type, but the main shaft being applicable to cross pin-type also can obtain identical effect.
Next, Figure 19 A, Figure 19 B and the overload protective device of Figure 19 C to the breakage for preventing main shaft is used to be described.
Figure 19 A is the figure representing the operation roll driving apparatus being provided with the fluid pressure type torque limiter of king post system as overload protective device.In operation roll driving apparatus 21A, between the gear coupling portion 63 and the upper and lower output shaft of gear-box 52 of the main shaft 20 of upper and lower a pair, have fluid pressure type torque limiter 85, gear coupling portion 63 is connected with the upper and lower output shaft of gear-box 52 via fluid pressure type torque limiter 85.
Figure 19 B is the figure representing the operation roll driving apparatus being provided with the fluid pressure type torque limiter of coupling type as overload protective device.In operation roll driving apparatus 21B, between the power shaft and the output shaft of motor 54 of gear-box 52, have fluid pressure type torque limiter 86, the power shaft of gear-box 52 is connected with the output shaft of motor 54 via shaft coupling 53 and fluid pressure type torque limiter 86.
Figure 19 C represents as overload protective device, is provided with the figure of the structure of safety pin in the shaft coupling power shaft of gear-box being connected to motor.Shaft coupling 53 has shaft coupling halfbody 53c, 53d, and this shaft coupling halfbody 53c, 53d have flange portion 53a, 53b, and flange portion 53a, 53b are provided with safety pin 87.
When there occurs plate fracture, between the operation roller that the steel plate of fracture is nipped upper and lower sometimes in a folded fashion, or be wound on operation roller, operation roller can sharply stop.If become such state, then when operation roller drives, immediately to from motor 54 to gear-box 52 and then the drive system effect overload to main shaft 20 transmitting torque, therefore, be arranged at overload protective device (hydraulic torque limiter 85,86 or the safety pin 87) work of the midway of drive system, moment of torsion to the transmission of operation roller is blocked, and roll mill can stop.
As mentioned above, the overload protective device shown in Figure 19 A, 19B, 19C, under the intensity with operation roller minor diameter, main shaft self also has to the situation that reduces, can as the effective means of object of protection main shaft.
In addition, in the above description, the main shaft becoming the object arranging overload protective device is gear type, but also can be suitable for overload protective device to the main shaft of cross pin-type.
Fig. 2 and Fig. 3 be illustrated as used, in the roll mill of present embodiment, roller mobile device 23 (Fig. 3) is provided with intermediate calender rolls bias unit 19.Here, explanation is re-started to this intermediate calender rolls bias unit 19.
In Fig. 2 and Fig. 3, on the play block 12 of roller mobile device 23, be assembled with intermediate calender rolls bias unit 19.As the method for operating of this intermediate calender rolls bias unit 19, the method etc. using the method for hydraulic cylinder, use the method for screw jack, use wedge can be considered.
On intermediate calender rolls bias unit 19, be also built-in with the middle roll bend device 11 intermediate calender rolls being paid to vertical curve.It is the structure of intermediate calender rolls 3, play block 12 and intermediate calender rolls bias unit 19 always movement on roller length direction simultaneously.Intermediate calender rolls bias unit 19 action in the rolling direction by the means of hydraulic cylinder, screw jack, wedge etc., this actuating quantity is detected by position detector.Each intermediate calender rolls bias unit 19 is controlled up and down individually or simultaneously.
Bias unit of the present invention, even if intermediate calender rolls 3 is biased in the rolling direction, the position of roller vertical curve device 11 is also always constant apart from the center of intermediate calender rolls 3 is " L1 ", in addition on roller length direction, due to the arrangement that the center being intermediate calender rolls bias unit 19 is consistent with the center of the bearing of bearing housing 9, therefore can not to the inclined load of bearing effect of bearing housing 9.
Above-mentioned intermediate calender rolls bias unit to be illustrated, but operation roller bias unit can also be used.And this operation roller bias unit is built-in with bending device too certainly, and can be suitable for hydraulic cylinder, screw jack, wedge etc. as action means, its actuating quantity is detected by position detector.
Next, the action effect that pair roller is biased is described.
The present invention relates to the minor diameter of operation roller, but usually, when reducing operation roller diameter, being well known that and easily producing flexure in the horizontal direction in rolling.As described above, adopt and be used for the means suppressing little as far as possible by the flexure of horizontal direction, be effective in stable operation.
Below, first, main cause operation roller producing flexure is described.Rough classification being carried out to the horizontal force acting on operation roller and can be divided into following 4 classes, in fact determining direction and the size of flexure by making a concerted effort.
The difference of the tension force before and after (a) operation roller
B when () operation roller drives, for driving intermediate calender rolls and strengthening the driving circumferential force of roller
C when () intermediate calender rolls drives, to be subject to from intermediate calender rolls driving circumferential force
The component of d rolling load that () produces because of the relative dislocation (hereinafter referred to as biased) of the center of operation roller and intermediate calender rolls.
In these four factors, (a), (b), (c) are determined by the rolling condition in operation, can grasp its value, but change more difficult wittingly.On the other hand, (d) is by rolling load and biased determine, rolling load and (a) ~ (c) in the same manner, be difficult to change wittingly, if but can change biased, be then the horizontal force that can change its value.
Like this, as the means that the flexure for the horizontal direction by operation roller suppresses little as far as possible, known bias unit is set on roll mill, thus the horizontal force acting on operation roller can be operated.Specifically, grasp in advance horizontal force (a), (b), (c) make a concerted effort and rolling load, determine the size be biased in the mode of making a concerted effort mutually to balance with (d) of (a), (b), (c), then the horizontal force acting on operation roller can be made in theory to be zero.But, in the rolling of reality, be difficult to accurate grasp (a), (b), (c); in addition; each value changes in time thus cannot fully zero setting, even in theory, also usually can set biased in the mode of remaining horizontal force to a certain degree.
Above, the effect on operation roller that describes has the main cause of horizontal force and biased effect, but roughly comprises two kinds in this bias unit.Figure 20 A and Figure 20 B is the figure representing these two kinds of biasing means.As described above, so-called being biased is that the center of operation roller and the center of intermediate calender rolls are relatively misplaced, therefore, it is possible to consider making operation roller move in the horizontal direction thus pay biased method and make intermediate calender rolls move in the horizontal direction as shown in fig. 20b thus pay biased method as shown in FIG. 20 A.
Next, be biased compare biased with intermediate calender rolls to operation roller to be described.No matter which kind of mode, by carrying out being biased thus the object reducing the horizontal deflection of operation roller not existing difference.But, in the operation of reality, difference as follows can be considered.First, in operation roller is biased, owing to making operation roller move, therefore following unfavorable condition can be produced.
(1) when setting biased before rolling starts, need to pull open upper and lower operation roller, therefore the position of operation roller before changing with change after,, there is the possibility that cannot be started rolling by the impression paid rolling stock swimmingly in changing relative to the rolling position of rolling stock of operation roller.
(2) when changing biased in rolling, owing to being rolled steel plate while make operation roller move in the horizontal direction, therefore worry to impact rolling quality.
To this, in intermediate calender rolls is biased, there is the advantage that can not produce these unfavorable conditions.That is,
(1) when setting biased before rolling starts, do not need to pull open upper and lower operation roller, even and if change the position of intermediate calender rolls, the rolling position relative to rolling stock of operation roller also can not change, therefore, it is possible to expect the smooth and easy beginning of rolling.
(2), when changing biased in rolling equally, independently make intermediate calender rolls move in the horizontal direction with the operation roller be rolled steel plate, therefore there is not the worry that rolling quality is impacted.
In cold-rolling mill of the present invention, adopt operation roller to be biased or intermediate calender rolls is biased any one can, but consider aforesaid comparative result, preferred intermediate calender rolls is biased.
Next, Figure 21 is utilized to be described the embodiment that have employed the situation that intermediate calender rolls drives in the present invention.Figure 21 is the figure of the drive system of the intermediate calender rolls type of drive observed from roll mill side.
In Figure 21, the roller of cold-rolling mill 51A forms identical with the embodiment shown in Fig. 1 ~ Fig. 3.And the cold-rolling mill 51A of present embodiment, as its drive unit, there is intermediate calender rolls drive unit 22.Intermediate calender rolls drive unit 22 has main shaft 90, gear-box (decelerator) 94, shaft coupling 95, the motor 96 of upper and lower a pair, the driving force of motor 96 is slowed down with the ratio of regulation by gear-box 94 or speedup or do not change speed, and absorbed the displacement of short transverse by the main shaft 90 of upper and lower a pair, and be passed to the intermediate calender rolls 3 of upper and lower a pair.
The main shaft 90 of upper and lower a pair is such as the main shaft of the cross pin-type using Figure 14 A and Figure 14 B to be illustrated, and has jackshaft 91 respectively, is located at the cross pin shaft coupling portion 92,93 at the two ends of jackshaft 91.The main shaft 90 of cross pin-type has the advantage than main gear shaft cheapness.
In addition, cold-rolling mill 51A has roller bias unit, and this roller bias unit can make the roller of the one party in intermediate calender rolls 3 and operation roller 2 enter side or go out lateral deviation to put to rolling direction relative to the axle core of the roller of the opposing party.This roller bias unit identically with the embodiment shown in Fig. 1 ~ 3, be preferably intermediate calender rolls bias unit, but also can be operation roller bias unit.
Other formation of the platform side of cold-rolling mill 51A is identical with the embodiment shown in Fig. 1 ~ Fig. 3.
Next, the embodiment of cold-rolling mill of the present invention to the Application Example of rolling equipment is described.
Figure 22 is the figure of the embodiment of the tandem rolling equipment representing use cold-rolling mill of the present invention and form.Tandem rolling equipment has the roll mill row be made up of 5 roll mill 100a ~ 100e, and roll mill 100a ~ 100e is all made up of above-mentioned cold-rolling mill of the present invention, such as cold-rolling mill 51 (Figure 14).Thereby, it is possible to the high productivity that maintenance tandem rolling equipment in the past has, and carry out while number of units can not be set up the rolling of steel plate harder than ever, and the steel plate of same rigidity also can be rolled with higher rolling rate.In addition, roll mill 100a ~ 100e also can be the formation at least comprising a cold-rolling mill of the present invention, equally in this case, compared with the rolling equipment be all made up of roll mill in the past, can carry out the rolling of high rolling rate.
Figure 23 is the figure of an example of the embodiment of the reversible rolling equipment representing use cold-rolling mill of the present invention and form.Reversible rolling equipment has 1 reversable cold-rolling machine 110, is configured with in the side that enters out of roll mill 110 the winding decoiling equipment 111,112 coiled, between roll mill 110 and winding decoiling equipment 111,112, be configured with deflection roller 113,114.And roll mill 110 is made up of above-mentioned cold-rolling mill of the present invention, such as cold-rolling mill 51.The high production rate that reversible rolling equipment in the past has can be maintained thus, and carry out the rolling of steel plate harder than ever while reversible rolling path number of times can not be increased, and the steel plate of same rigidity also can be rolled with higher rolling rate.In addition, reversible rolling equipment also can have 2 roll mills, makes at least 1 in 2 to be above-mentioned cold-rolling mill of the present invention, such as cold-rolling mill 51, thus, compared with the rolling equipment be all made up of roll mill in the past, can carry out the rolling of high rolling rate.
Figure 24 is the figure of the transformation example of the tandem rolling equipment representing use cold-rolling mill of the present invention and carry out.Tandem rolling equipment before transformation, has the roll mill row be made up of the roll mill 120a ~ 120e in the past of 5, in illustrated transformation example, last roll mill 120e is changed to above-mentioned cold-rolling mill of the present invention, such as cold-rolling mill 51.In this situation, both the roll mill entirety of 1 can be changed, also can the roll mill of 1 be transformed partly.Thereby, it is possible to the high productivity that the tandem rolling equipment before maintenance transformation has, and carry out while number of units can not be set up the rolling than steel plate harder before transformation, and the steel plate of same rigidity also can be rolled with higher rolling rate.In addition, the roll mill carrying out changing also can be more than 2 or 2.
Figure 25 represents to employ cold-rolling mill of the present invention and the figure of other transformation example of the tandem rolling equipment carried out.Tandem rolling equipment before transformation has the roll mill be made up of 5 roll mill 120a ~ 120e in the past and arranges, and in illustrated transformation example, adds arrange above-mentioned cold-rolling mill of the present invention, such as cold-rolling mill 51 in the side that goes out of roll mill row.Thereby, it is possible to the high production rate that the tandem rolling equipment before maintenance transformation has, and the rolling than steel plate harder before transformation can be carried out, and the steel plate of same rigidity also can be rolled with higher rolling rate.In addition, add the position that roll mill of the present invention is set also can be roll mill row enter side or both sides.
In addition, although not shown, even the reversible rolling equipment shown in Figure 23, also by this reversable cold-rolling machine 110 is changed to above-mentioned cold-rolling mill of the present invention, can transform identically with tandem rolling equipment.Thereby, it is possible to utilize existing equipment, carry out the rolling of steel plate harder than ever, and the steel plate of same rigidity also can be rolled with higher rolling rate.
The explanation of Reference numeral
1 rolling stock (steel plate)
2 operation rollers
3 intermediate calender rolls
3a inclined-plane
4 strengthen roller
5 housings
6,8,9 bearing housings
10 operation bending devices
11 middle roll bend devices
12 play blocks
14 holding plates
15 hydraulic cylinders
16 hydraulic cylinders
17 balance weights
18 stays
19 intermediate calender rolls bias units
The main shaft of 20 gear types
The main shaft of 20A cross pin-type
21,21A, 21B operation roll driving apparatus
22 intermediate calender rolls drive units
23 roller mobile devices (axial moving device)
51,51A cold-rolling mill
52 gear-boxes (decelerator)
53 shaft couplings
53a, 53b flange portion
53c, 53d shaft coupling halfbody
54 motor
61 jackshafts
62,63 gear coupling portions
62A gear coupling portion
64,65 urceolus
64a, 65a internal tooth
66,67 inner cores
66a, 67a external tooth
68,69 recesses
71 jackshafts
72,73 cross pin shaft coupling portions
74,75 recesses
76 cross pins
85,86 fluid pressure type torque limiters
87 safety pins
90 main shafts
91 jackshafts
92,93 cross pin shaft coupling portions
94 gear-boxes
95 shaft couplings
96 motor

Claims (12)

1. a cold-rolling mill, to minimum plate wide for more than 600mm and the wide steel plate for more than 1500mm below 1900mm of maximum plate be rolled, it is characterized in that,
Have:
The operation roller (2,2) of upper and lower a pair;
Support the intermediate calender rolls (3,3) of a pair up and down of this operation roller respectively;
Support the reinforcement roller (4,4) of a pair up and down of this intermediate calender rolls respectively;
The axial moving device (23) of this intermediate calender rolls;
The bending apparatus (10,11) of this operation roller and this intermediate calender rolls,
Make the diameter of this operation roller in the scope of more than 300mm below 400mm, and make the diameter of described intermediate calender rolls in the scope of more than 560mm below 690mm.
2. cold-rolling mill as claimed in claim 1, is characterized in that,
As the drive unit of described cold-rolling mill, be provided with the operation roll driving apparatus (21) described operation roller (2,2) being carried out to rotary actuation.
3. cold-rolling mill as claimed in claim 2, is characterized in that,
Described operation roll driving apparatus (21) has the main shaft (20,20) of gear type, and the driving force of motor (54) is passed to described operation roller (2,2) by it.
4. cold-rolling mill as claimed in claim 3, is characterized in that,
Described operation roll driving apparatus (21A; 21B) there is overload protective device (85; 86; 87), it is for preventing the breakage of described main shaft (20,20).
5. the cold-rolling mill as described in any one of Claims 1 to 4, is characterized in that,
Also have roller bias unit (19), it can make the roller of the one party of described operation roller (2,2) and described intermediate calender rolls (3,3) enter side and even go out lateral deviation to put to rolling direction relative to the axle core of the roller of the opposing party.
6. cold-rolling mill as claimed in claim 1, is characterized in that,
As the drive unit of described cold-rolling mill, be provided with the intermediate calender rolls drive unit (22) described intermediate calender rolls (3,3) being carried out to rotary actuation.
7. cold-rolling mill as claimed in claim 6, is characterized in that,
Described intermediate calender rolls drive unit (22) has the main shaft (90,90) of cross pin-type, and the driving force of motor (96) is passed to described intermediate calender rolls (3,3) by it.
8. cold-rolling mill as claimed in claims 6 or 7, is characterized in that,
Also have roller bias unit (19), it can make the roller of the one party of described operation roller (2,2) and described intermediate calender rolls (3,3) enter side and even go out lateral deviation to put to rolling direction relative to the axle core of the roller of the opposing party.
9. a tandem rolling equipment, has roll mill row, and this roll mill row have multiple stage roll mill (100a ~ 100e), it is characterized in that,
Described multiple stage roll mill comprises the cold-rolling mill (51) described in any one of at least one claim 1 ~ 8.
10. a reversible rolling equipment, it has at least one reversible rolling machine (110), it is characterized in that,
Described reversible rolling machine comprises the cold-rolling mill (51) described in any one of at least one claim 1 ~ 8.
The remodeling method of 11. 1 kinds of rolling equipments, this rolling equipment has one or more roll mill (110; 120a ~ 120e), it is characterized in that,
At least one roll mill is changed to the cold-rolling mill (51) described in any one of claim 1 ~ 8.
The method of operation of 12. 1 kinds of cold-rolling mills, is characterized in that, uses the cold-rolling mill described in any one of claim 1 ~ 8, with higher than 12% the rolling of rolling rate described in steel plate (1).
CN201180018331.2A 2011-09-20 2011-09-20 Cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill Active CN103118813B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/071391 WO2013042204A1 (en) 2011-09-20 2011-09-20 Cold rolling mill, tandem rolling facility, reversing rolling facility, method for modifying rolling facility, and method for operating cold rolling mill

Publications (2)

Publication Number Publication Date
CN103118813A CN103118813A (en) 2013-05-22
CN103118813B true CN103118813B (en) 2016-01-20

Family

ID=46261527

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201180018331.2A Active CN103118813B (en) 2011-09-20 2011-09-20 Cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill

Country Status (6)

Country Link
EP (1) EP2572808B1 (en)
JP (1) JP4928653B1 (en)
KR (1) KR101424375B1 (en)
CN (1) CN103118813B (en)
BR (1) BR112012027654B1 (en)
WO (1) WO2013042204A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103639202A (en) * 2013-11-29 2014-03-19 四川省川威集团有限公司 Rolling mill
DE202014010279U1 (en) * 2014-12-17 2015-04-08 Achenbach Buschhütten GmbH & Co. KG Roll stand with displacement device
JP6470134B2 (en) 2015-07-08 2019-02-13 Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 Rolling mill and rolling method
JP6354718B2 (en) * 2015-09-25 2018-07-11 Ｊｆｅスチール株式会社 Cold tandem rolling mill and manufacturing method of high strength cold rolled steel sheet
DE102019200005A1 (en) 2019-01-02 2020-07-02 Sms Group Gmbh Rolling device
JP6992783B2 (en) * 2019-03-28 2022-01-13 Ｊｆｅスチール株式会社 Setting method and setting device for the upper limit of roll offset amount in tandem rolling equipment
JP7313768B2 (en) * 2019-05-23 2023-07-25 スチールプランテック株式会社 Rolling mill, rolling method and work roll operation method
WO2021116460A1 (en) * 2019-12-11 2021-06-17 Sms Group Gmbh Hot-rolling stand for a hot-rolling mill and for producing a flat metal product, hot-rolling mill and method for operating a hot-rolling mill
WO2021205548A1 (en) * 2020-04-07 2021-10-14 Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ 株式会社 Rolling mill, method for manufacturing rolling mill, and method for modifying rolling mill
US20220118492A1 (en) * 2020-10-21 2022-04-21 Digi Drives Private Limited Cold rolling mill
CN112934957B (en) * 2021-01-22 2022-08-19 深圳市鸿森精科实业有限公司 Aluminum alloy cold rolling mechanism
IT202200006743A1 (en) * 2022-04-05 2023-10-05 Danieli Off Mecc CAGE, GROUP AND ROLLING PROCEDURE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712416A (en) * 1984-03-13 1987-12-15 Sms Schloemann-Siemag Ag Six-high roll stand with offset inner backup rolls
EP0543014A1 (en) * 1991-05-16 1993-05-26 Kawasaki Steel Corporation Six-stage rolling mill
JP3285805B2 (en) * 1997-12-22 2002-05-27 株式会社日立製作所 Rolling mill drive device and control method thereof
CN101337235A (en) * 2001-07-11 2009-01-07 株式会社日立制作所 Rolling mill, rolling equipment and rolling method
CN101961728A (en) * 2009-07-22 2011-02-02 三菱日立制铁机械株式会社 Milling train and tandem mill with this milling train

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185508A (en) * 1983-04-08 1984-10-22 Hitachi Ltd Multiple rolling mill
JPS61100230A (en) 1984-10-24 1986-05-19 興和株式会社 Method and apparatus for fabricating heart surface exciting propagation chart
JPH05337507A (en) * 1992-06-04 1993-12-21 Mitsubishi Heavy Ind Ltd Roll cross type tandem rolling mill line
JP2845097B2 (en) * 1993-03-18 1999-01-13 株式会社日立製作所 Hot steel plate rolling equipment and rolling method
KR950010601B1 (en) * 1993-12-31 1995-09-20 포항종합제철주식회사 Method for rolling condition extablishment of cold rolling process
DE69623343T2 (en) * 1996-04-03 2003-04-24 Hitachi, Ltd. ROLLING MILL, ROLLING METHOD AND ROLLING MACHINE
JP3307551B2 (en) * 1996-07-02 2002-07-24 株式会社日立製作所 Drive for rolling mill, rolling mill and rolling method
JPH1133608A (en) * 1997-07-11 1999-02-09 Hitachi Ltd Rolling mill and rolling method
JP4172214B2 (en) * 2001-07-11 2008-10-29 株式会社日立製作所 Rolling mill, rolling equipment and rolling method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712416A (en) * 1984-03-13 1987-12-15 Sms Schloemann-Siemag Ag Six-high roll stand with offset inner backup rolls
EP0543014A1 (en) * 1991-05-16 1993-05-26 Kawasaki Steel Corporation Six-stage rolling mill
JP3285805B2 (en) * 1997-12-22 2002-05-27 株式会社日立製作所 Rolling mill drive device and control method thereof
CN101337235A (en) * 2001-07-11 2009-01-07 株式会社日立制作所 Rolling mill, rolling equipment and rolling method
CN101961728A (en) * 2009-07-22 2011-02-02 三菱日立制铁机械株式会社 Milling train and tandem mill with this milling train

Also Published As

Publication number Publication date
JP4928653B1 (en) 2012-05-09
KR20130054965A (en) 2013-05-27
WO2013042204A1 (en) 2013-03-28
BR112012027654B1 (en) 2018-03-13
BR112012027654A2 (en) 2016-08-16
JPWO2013042204A1 (en) 2015-03-26
CN103118813A (en) 2013-05-22
KR101424375B1 (en) 2014-07-31
EP2572808B1 (en) 2014-05-21
EP2572808A1 (en) 2013-03-27

Similar Documents

Publication Publication Date Title
CN103118813B (en) Cold-rolling mill, tandem rolling equipment, reversible rolling equipment, the remodeling method of rolling equipment and the method for operation of cold-rolling mill
US6286354B1 (en) Rolling mill and rolling method and rolling equipment
CN101918153B (en) Rolling mill, and tandem rolling mill having the same
EP1230991B1 (en) Tandem rolling mill facility and rolling method using the same
CN87107665A (en) Multi-frame continuous rolling mill for casting machine of flat blank
CN1883833A (en) Multi-roller multi-frame reversing cold mill and rolling method therefor
JP4135351B2 (en) Multi-row rolling mill, method of use thereof and rolling equipment
KR100307121B1 (en) Rolling mill and rolling method and rolling equipment
CN209255478U (en) Unilateral rack moves omnipotent reversible blooming mill
CN101961729B (en) Rolling mill and tandem rolling mill having the same
EP2869945B1 (en) Continuously operating casting and rolling system
CN100563860C (en) Milling train and rolling equipment
JPS636282B2 (en)
JP2708228B2 (en) 5-high rolling mill
KR100975537B1 (en) Drive arrangement for rolling mill
CN113941596B (en) Vertical universal rolling mill for die flat steel, flat steel rolling production line and method thereof
CN203184356U (en) Hydraulic coreless rolling machine
JP4165223B2 (en) Hot multi-high rolling mill and rolling method of hot multi-high rolling mill
JPH0780508A (en) Casting/hot rolling continuing equipment
CN117600221A (en) Arrangement pattern of continuous casting, rolling and straightening steel rail production rolling mill
CN2201994Y (en) Three-roller rolling mill
RU2243841C1 (en) Shape bending mill
JP2020131206A (en) Bar steel/wire rough rolling method
JP2002066619A (en) Cold rolling method for steel strip
JP2004009119A (en) Hot rolling equipment and hot rolling method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20151110

Address after: Tokyo, Japan, Japan

Applicant after: Co., Ltd of general sharp special metallurgical technology Japan

Address before: Tokyo, Japan, Japan

Applicant before: Mitsubishi Hitachi Steel, Ltd.

C14 Grant of patent or utility model
GR01 Patent grant