CN116651933B - Corner rolling method and device for plate and storage medium - Google Patents
Corner rolling method and device for plate and storage medium Download PDFInfo
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- CN116651933B CN116651933B CN202310961288.8A CN202310961288A CN116651933B CN 116651933 B CN116651933 B CN 116651933B CN 202310961288 A CN202310961288 A CN 202310961288A CN 116651933 B CN116651933 B CN 116651933B
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- 238000005096 rolling process Methods 0.000 title claims abstract description 351
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000003860 storage Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 70
- 230000009467 reduction Effects 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/224—Edge rolling of flat products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/222—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 rolling-drawing process; in a multi-pass mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a plate corner rolling method, a device and a storage medium, which belong to the technical field of medium plate rolling, and mainly solve the problem that the effect of the plane shape of a large single finished product rolled under the condition that a blank cannot be fully rolled in the prior art is poor; rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions; and rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to obtain the target plate.
Description
Technical Field
The invention relates to the technical field of rolling of medium plates, in particular to a plate corner rolling method, a plate corner rolling device and a storage medium.
Background
The continuous casting blank is adopted as a raw material in the production of the heavy and medium plate mill, and when a large single finished product is produced, the length of the blank of the continuous casting blank needs to be increased under the condition that the width specification of the blank is fixed. Because the length of the blank is increased and exceeds the capacity information of rolling mill equipment, the blank cannot be completely rotated on a rolling mill, and the widening rolling of the blank cannot be realized.
At present, a two-pass angle rolling technology is adopted to produce a large single finished product, and the widening rolling is realized by rotating a blank by a certain angle. However, in the existing twice angle rolling technology, two angles on the same side in the length direction of a blank are firstly bitten into each other, so that the length of one side which is bitten into each other after angle rolling is smaller than that of the other side, the plane shape effect of a rolled piece after angle rolling is affected, and the cutting loss is increased.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus and a storage medium for corner rolling of a sheet material, which mainly aims to solve the problem that the effect of the planar shape of a large single finished product rolled under the condition that the blank cannot be completely turned is poor in the prior art.
According to one aspect of the present invention, there is provided a method of corner rolling a sheet material, comprising:
determining a first steel turning angle and a second steel turning angle based on equipment capability information of the heavy and medium plate mill, an initial specification of a blank and a target specification of blank rolling;
rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions;
and rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to obtain the target plate.
Further, the determining the first turning angle and the second turning angle based on the equipment capacity information, the initial billet specification and the target billet rolling specification of the heavy and medium plate mill comprises:
acquiring a roll length from the equipment capacity information, acquiring a blank initial width from the blank initial specification, and acquiring a blank rolling target width from the blank rolling target specification;
determining the first turning angle based on the roll body length, the initial billet width, and the target billet rolling width;
and obtaining the reduction corresponding to each pass, and determining the second steel turning angle based on the reduction, the first steel turning angle, the initial width of the blank and the rolling target width of the blank.
Further, the first-pass and second-pass rolling based on the combined rolling direction of the transmission and the roller includes:
when the transmission device and the roller are determined to be in a first rolling direction, performing first-pass angle rolling on the slab at the first turning angle;
after the first angle rolling is finished, reversely braking the transmission device and the roller to enable the transmission device and the roller to be in a second rolling direction;
and performing second-pass angle rolling on the plate blank at the first turning angle, wherein the second-pass angle rolling is opposite to the first-pass angle rolling in direction.
Further, the rotating the slab based on the second turning angle, and performing the third pass and the fourth pass of the corner rolling based on the combined rolling direction of the transmission and the roll, respectively, includes:
rotating the slab based on the second steel turning angle after finishing the second pass angle rolling; when the transmission device and the roller are determined to be in the first rolling direction, performing third angle rolling on the slab at the second steel turning angle;
after the third angle rolling is finished, reversely braking the transmission device and the roller to enable the transmission device and the roller to be in a second rolling direction;
and performing fourth-pass angle rolling on the plate blank at the second turning angle, wherein the fourth-pass angle rolling is opposite to the third-pass angle rolling in direction.
Further, before the obtaining the corresponding rolling reduction of each pass, the method further includes:
acquiring a blank rolling target thickness from the blank rolling target specification;
and determining the reduction corresponding to each pass based on the blank rolling target thickness.
Further, after the target board is obtained, the method further includes:
acquiring actual specification data of the target plate;
calculating a rectangular degree value corresponding to the target plate based on the actual specification data;
and if the rectangular degree value does not meet the rectangular degree threshold condition, adjusting the first steel turning angle and the second steel turning angle.
According to another aspect of the present invention, there is provided a corner rolling apparatus for a sheet material, comprising:
the turning angle determining module is used for determining a first turning angle and a second turning angle based on equipment capacity information of the heavy and medium plate mill, the initial specification of the blank and the target specification of the blank rolling;
the first control module is used for rotating the plate blank based on the first steel rotating angle and respectively carrying out first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions;
and the second control module is used for rotating the plate blank based on the second steel rotating angle, and respectively carrying out third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to obtain the target plate.
Further, the first control module includes:
a first pass control unit for performing a first pass angle rolling of the slab at the first turning angle when it is determined that the transmission and the roll are in a first rolling direction;
the reverse braking unit is used for reversely braking the transmission device and the roller after the first angle rolling is finished, so that the transmission device and the roller are in a second rolling direction;
and the second-pass control unit is used for performing second-pass angular rolling on the plate blank at the first turning angle, and the second-pass angular rolling is opposite to the first-pass angular rolling in direction.
Further, the second control module includes:
the third-pass control unit is used for rotating the slab based on the second steel turning angle after finishing the second-pass angle rolling; when the transmission device and the roller are determined to be in the first rolling direction, performing third angle rolling on the slab at the second steel turning angle;
the reverse braking unit is used for reversely braking the transmission device and the roller after the third corner rolling is finished, so that the transmission device and the roller are in a second rolling direction;
and the fourth-pass control unit is used for performing fourth-pass angular rolling on the plate blank at the second turning angle, and the fourth-pass angular rolling and the third-pass angular rolling are opposite in direction.
According to still another aspect of the present invention, there is provided a storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the method of squaring a sheet material as described above.
By means of the technical scheme, the technical scheme provided by the embodiment of the invention has at least the following advantages:
compared with the prior art, the method and the device for corner rolling of the plate determine the first steel turning angle and the second steel turning angle based on equipment capacity information of a heavy and medium plate mill, initial specifications of blanks and rolling target specifications of the blanks; rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions; and rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to finish angle rolling of the plate blank. According to the invention, through the first-fourth-pass corner rolling process, four corners of the slab are used as the first-biting corners, so that shape deviation caused by taking only two corners on the same side in the length direction as the first-biting corners is avoided, the plane shape effect of a rolled piece is improved, and the cutting loss of the slab is reduced.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 shows a schematic flow chart of a method for corner rolling a sheet material according to an embodiment of the present invention;
FIG. 2 is a schematic view showing rolling directions in an alternative method for corner rolling a sheet material according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for corner rolling of a sheet material according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method for corner rolling of a sheet material according to an embodiment of the present invention;
fig. 5 shows a schematic structural view of a plate corner rolling device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the invention provides a plate corner rolling method, which is shown in fig. 1 and comprises the following steps:
101. determining a first steel turning angle and a second steel turning angle based on equipment capability information of the heavy and medium plate mill, an initial specification of a blank and a target specification of blank rolling;
in the embodiment of the invention, the current execution end determines a first steel turning angle and a second steel turning angle based on equipment capacity information of a heavy and medium plate mill, an initial specification of a blank and a target specification of blank rolling. The current executing end can be a control end arranged on the site of the heavy and medium plate mill equipment, can also be a remote control end and the like, and the embodiment of the invention is not particularly limited. The equipment capability information includes roll diameter, roll length, maximum rolling force, maximum opening degree, rolling speed and the like, and the embodiment of the invention is not particularly limited. Wherein the initial blank specification includes a length, a width, and a thickness of the blank; the stock rolling target specification includes a stock rolling target width and a stock rolling target thickness. The first steel rotating angle is the included angle between the edge where the width of the slab is positioned and the axis of the roller, and can be recorded as an angle alpha; the second steel turning angle is the included angle between the side of a parallelogram corresponding to the side of the original slab where the width is located and the axis of the roller after the first pass rolling and the second pass rolling, and can be recorded as an angle beta.
The first turning angle is determined such that the billet after turning does not exceed the length range of the roll body of the roll during rolling. Likewise, when determining the second turning angle, it is also necessary to keep the billet after turning from exceeding the roll length range of the roll during rolling.
102. Rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions;
in the embodiment of the invention, the current execution end rotates the slab based on the first steel rotation angle, namely, the included angle between the edge where the width of the slab is positioned and the axis of the roller forms an alpha angle. The current execution end performs a first pass and a second pass of angular rolling, respectively, based on a combined rolling direction of the transmission and the rolls, wherein the combined rolling direction comprises a set of two opposite rolling directions. As shown in fig. 2, (a) is a schematic drawing of the rolling direction of the first pass, and (b) is a schematic drawing of the rolling direction of the second pass, that is, the driving direction of the driving device is opposite and the rotating direction of the roller is opposite when the first pass rolling and the second pass rolling are performed.
103. And rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to obtain the target plate.
In the embodiment of the invention, the current execution end rotates the slab based on the second steel rotation angle, namely, after the first pass rolling and the second pass rolling, the included angle between the side of one parallelogram corresponding to the side of the original slab width and the axis of the roller is beta angle. And the current execution end performs third-pass angle rolling and fourth-pass angle rolling respectively based on the combined rolling direction of the transmission device and the roller to obtain the target plate. As shown in fig. 2, (c) is a schematic drawing of performing the third pass rolling at the second turning angle, and (d) is a schematic drawing of performing the fourth pass rolling at the second turning angle, that is, the transmission direction of the transmission device is opposite and the rotation direction of the roll is opposite when the third pass rolling and the fourth pass rolling are performed.
Further, as a refinement and expansion of the specific implementation manner of the above embodiment, in order to make the rolling process reach the target width of widening rolling more accurately, another plate corner rolling method is provided, and the step of determining the first turning angle and the second turning angle based on the equipment capability information of the heavy and medium plate mill, the initial specification of the blank and the target specification of blank rolling includes:
acquiring a roll length from the equipment capacity information, acquiring a blank initial width from the blank initial specification, and acquiring a blank rolling target width from the blank rolling target specification;
determining the first turning angle based on the roll body length, the initial billet width, and the target billet rolling width;
and obtaining the reduction corresponding to each pass, and determining the second steel turning angle based on the reduction, the first steel turning angle, the initial width of the blank and the rolling target width of the blank.
In the embodiment of the invention, a current execution end acquires the length of a roller body from equipment capacity information, acquires the initial width of a blank from the initial specification of the blank, and acquires the target width of blank rolling from the target specification of blank rolling; and determining a first steel turning angle alpha based on the length of the roll body, the initial width of the blank and the rolling target width of the blank, and ensuring that the blank after the steel turning angle alpha does not exceed the length range of the roll body of the roll in the rolling process. The current execution end obtains the corresponding rolling reduction of each pass, and determines the second steel turning angle based on the rolling reduction, the first steel turning angle, the initial width of the blank and the rolling target width of the blank, wherein the second steel turning angle is shown in the following formula:
wherein, the liquid crystal display device comprises a liquid crystal display device,the initial width of the blank; />The initial thickness of the blank is;αis a first steel rotation angle; />The thickness of the outlet is the thickness of the outlet after the first pass rolling and the second pass rolling;βthe steel is turned to a second steel turning angle; />Rolling a target width for the blank; />The target thickness is rolled for the blank. According to the steel turning angle calculation model, a first steel turning angle is given under the condition that the thickness of a blank rolling target is determinedαThe second steel rotation angle can be calculatedβ。
It should be noted that, before obtaining the corresponding reduction of each pass, the method further includes: obtaining a blank rolling target thickness from a blank rolling target specification by a current execution endThe method comprises the steps of carrying out a first treatment on the surface of the And determining the corresponding reduction of each pass based on the target thickness of the blank rolling. For example, the outlet thickness after the first and second pass rolling is known>And the initial thickness of the blank +.>The total reduction of the first pass and the second pass can be obtained>Then the depression is increased>The first pass and the second pass are distributed evenly to obtain the first pass reduction and the second pass reduction of +>2; the target thickness of the blank after the third pass and the fourth pass is known>The total reduction of the third and fourth passes can be obtained>Then the depression is increased>Dividing the first and second rolling passes into a third pass and a fourth pass to obtain a third rolling reduction and a fourth rolling reduction of +.>The embodiment of the invention is not particularly limited.
Further, as a refinement and extension of the above embodiment, in order to make four corners of the blank engaged by the rolls respectively first, another method of corner rolling a sheet material is provided, as shown in fig. 3, the steps of performing the first pass corner rolling and the second pass corner rolling based on the combined rolling directions of the transmission and the rolls respectively include:
201. when the transmission device and the roller are determined to be in a first rolling direction, performing first-pass angle rolling on the slab at the first turning angle;
202. after the first angle rolling is finished, reversely braking the transmission device and the roller to enable the transmission device and the roller to be in a second rolling direction;
203. and performing second-pass angle rolling on the plate blank at the first turning angle, wherein the second-pass angle rolling is opposite to the first-pass angle rolling in direction.
In the embodiment of the present invention, as shown in fig. 2, after the blank is rotated at the first turning angle, as shown in (a) in fig. 2, a is defined as the selected point of the first contact roller in all the measurement points in the first pass angular rolling, b is defined as the selected point of the second contact roller in all the measurement points in the first pass angular rolling, c is defined as the selected point of the third contact roller in all the measurement points in the first pass angular rolling, and d is defined as the selected point of the last contact roller in all the measurement points in the first pass angular rolling; in the second pass angle rolling, the angle of the blank is not adjusted, and the transmission device and the roller are only braked reversely, so that the transmission device and the roller are in the second rolling direction, as shown in (b) of fig. 2, d is the point of the first contact roller in all the measuring points in the second pass angle rolling, c is the point of the second contact roller, b is the point of the third contact roller, and a is the point of the last contact roller.
As shown in fig. 4, the step of rotating the slab based on the second turning angle and performing the third pass and the fourth pass of the corner rolling based on the combined rolling direction of the transmission and the rolls, respectively, includes:
301. rotating the slab based on the second steel turning angle after finishing the second pass angle rolling; when the transmission device and the roller are determined to be in the first rolling direction, performing third angle rolling on the slab at the second steel turning angle;
302. after the third angle rolling is finished, reversely braking the transmission device and the roller to enable the transmission device and the roller to be in a second rolling direction;
303. and performing fourth-pass angle rolling on the plate blank at the second turning angle, wherein the fourth-pass angle rolling is opposite to the third-pass angle rolling in direction.
In the embodiment of the invention, after the current execution end detects that the second pass angular rolling is finished, the slab is rotated based on the second steel rotation angle, and the transmission device and the roller are reversely braked, so that the rolling direction of the third pass is the same as the rolling direction of the first pass, as shown in (c) of fig. 2, b is the point selected from the first contact roller in all the measurement points in the third pass angular rolling, a is the point selected from the second contact roller, d is the point selected from the third contact roller, and c is the point selected from the last contact roller. In the fourth pass angular rolling, the angle of the blank is not adjusted, and the transmission device and the roller are only braked reversely so that the rolling direction of the fourth pass is the same as the rolling direction of the second pass, as shown in (d) of fig. 2, c is the point of the first contact roller among all the measurement points in the fourth pass angular rolling, d is the point of the second contact roller, a is the point of the third contact roller, and b is the point of the last contact roller.
Further, as a refinement and expansion of the specific implementation manner of the foregoing embodiment, in order to analyze the effect after the corner rolling and adjust the parameters in time to further improve the rolling effect, another corner rolling method of a plate is provided, and after the step of obtaining the target plate, the method further includes:
acquiring actual specification data of the target plate;
calculating a rectangular degree value corresponding to the target plate based on the actual specification data;
and if the rectangular degree value does not meet the rectangular degree threshold condition, adjusting the first steel turning angle and the second steel turning angle.
In the embodiment of the invention, in order to more intuitively analyze the rolling effect, rolling experiments are carried out by adopting 2 normal-temperature lead block blanks with blank sizes of 16mm thick, 120mm wide and 160mm long. Wherein, the blank No. 1 carries out twice angle rolling experiments, and the blank No. 2 carries out four times angle rolling experiments. In addition, in order to make the rolled shapes of the two blanks comparableThe two rotation angles of the two rolling pieces are equal, the total rolling reduction is equal, and an isobaric rolling reduction mode is adopted. Setting of twice angle rolling=2mm，/>=2mm. The reduction of each pass of four-pass angle rolling is set to be 1mm.
In the case of a total reduction of 4mm, the outlet thickness h of the twice-angle rolling 1 =14mm，h 2 After-rolling width b is set by two-pass corner rolling process experiments with the diameter of 12mm 2 The first turning angle is α=20°, the second turning angle β is calculated by the following formula:
the parameters of the two-pass and four-pass setting in the examples of the present invention are shown in table 1 below, with β=17.5°, calculated.
Table 1 comparison table of parameter settings for two-pass and four-pass corner rolling
Based on the parameters set in table 1, two times of corner rolling experiments are performed on the blank No. 1, after four times of corner rolling experiments are performed on the blank No. 2, actual specification data of the target plates after rolling of the blank No. 1 and the blank No. 2 are measured, as shown in table 2:
table 2 specification comparison table
Wherein ab, cd, ad and bc represent the respective side lengths of the rolled target plate; ac and bd represent two diagonals of the rolled target sheet. The values of the degree of rectangularity corresponding to the target plate number 1 and the target plate number 2 are calculated based on the actual specification data in the above table 2, respectively, as follows:
the rectangular degree value of the No. 1 target plate is as follows:
the rectangular degree value of the No. 2 target plate is as follows:
the calculation result of substituting each actual specification data of the rolled piece into the calculation formula of the rectangular degree value is closer to 1, so that the rectangular degree of the rolled piece is better. In the embodiment of the invention, the calculation result of the rectangular degree value of the two-pass angular rolling is 1.0095, the calculation result of the rectangular degree value of the four-pass angular rolling is 1.0071, and the rectangular effect of the rolled piece obtained by the data comparison four-pass angular rolling process is better than that of the two-pass angular rolling.
Compared with the prior art, the method for corner rolling of the plate determines the first steel turning angle and the second steel turning angle based on equipment capacity information of a heavy and medium plate mill, initial specifications of blanks and target specifications of blank rolling; rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions; and rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to finish angle rolling of the plate blank. According to the invention, through the first-fourth-pass corner rolling process, four corners of the slab are used as the first-biting corners, so that shape deviation caused by taking only two corners on the same side in the length direction as the first-biting corners is avoided, the plane shape effect of a rolled piece is improved, and the cutting loss of the slab is reduced.
As an implementation of the method shown in fig. 1, an embodiment of the present invention provides a plate corner rolling device, as shown in fig. 5, including:
a rotation angle determination module 41 for determining a first steel rotation angle and a second steel rotation angle based on the equipment capability information of the heavy and medium plate mill, the initial specification of the billet, and the target specification of the billet rolling;
a first control module 42 for rotating the slab based on the first turning angle and performing a first pass and a second pass of corner rolling based on a combined rolling direction of the transmission and the rolls, respectively; the combined rolling direction comprises a group of two reverse rolling directions;
and a second control module 43, configured to rotate the slab based on the second turning angle, and perform third-pass and fourth-pass corner rolling based on the combined rolling direction of the transmission device and the roller, respectively, so as to obtain a target plate.
Further, the rotation angle determining module 41 is further configured to:
acquiring a roll length from the equipment capacity information, acquiring a blank initial width from the blank initial specification, and acquiring a blank rolling target width from the blank rolling target specification;
determining the first turning angle based on the roll body length, the initial billet width, and the target billet rolling width;
and obtaining the reduction corresponding to each pass, and determining the second steel turning angle based on the reduction, the first steel turning angle, the initial width of the blank and the rolling target width of the blank.
Further, the first control module 42 includes:
a first pass control unit for performing a first pass angle rolling of the slab at the first turning angle when it is determined that the transmission and the roll are in a first rolling direction;
the reverse braking unit is used for reversely braking the transmission device and the roller after the first angle rolling is finished, so that the transmission device and the roller are in a second rolling direction;
and the second-pass control unit is used for performing second-pass angular rolling on the plate blank at the first turning angle, and the second-pass angular rolling is opposite to the first-pass angular rolling in direction.
Further, the second control module 43 includes:
the third-pass control unit is used for rotating the slab based on the second steel turning angle after finishing the second-pass angle rolling; when the transmission device and the roller are determined to be in the first rolling direction, performing third angle rolling on the slab at the second steel turning angle;
the reverse braking unit is used for reversely braking the transmission device and the roller after the third corner rolling is finished, so that the transmission device and the roller are in a second rolling direction;
and the fourth-pass control unit is used for performing fourth-pass angular rolling on the plate blank at the second turning angle, and the fourth-pass angular rolling and the third-pass angular rolling are opposite in direction.
Further, the device further comprises a depression amount determining module for:
acquiring a blank rolling target thickness from the blank rolling target specification;
and determining the reduction corresponding to each pass based on the blank rolling target thickness.
Further, the device also comprises an adjusting module for:
acquiring actual specification data of the target plate;
calculating a rectangular degree value corresponding to the target plate based on the actual specification data;
and if the rectangular degree value does not meet the rectangular degree threshold condition, adjusting the first steel turning angle and the second steel turning angle.
Compared with the prior art, the angle rolling device for the plate provided by the embodiment of the invention determines a first steel turning angle and a second steel turning angle based on equipment capacity information of a heavy and medium plate mill, initial specifications of blanks and target specifications of blank rolling; rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions; and rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to finish angle rolling of the plate blank. According to the invention, through the first-fourth-pass corner rolling process, four corners of the slab are used as the first-biting corners, so that shape deviation caused by taking only two corners on the same side in the length direction as the first-biting corners is avoided, the plane shape effect of a rolled piece is improved, and the cutting loss of the slab is reduced.
According to one embodiment of the present invention, there is provided a storage medium storing at least one executable instruction for performing the method of corner rolling a sheet material in any of the method embodiments described above.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method of corner rolling a sheet material, comprising:
determining a first steel turning angle and a second steel turning angle based on equipment capability information of the heavy and medium plate mill, an initial specification of a blank and a target specification of blank rolling;
rotating the plate blank based on the first steel rotating angle, and respectively performing first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions;
rotating the plate blank based on the second steel rotating angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to obtain a target plate;
the determining of the first steel turning angle and the second steel turning angle based on the equipment capacity information, the initial specification of the blank and the target specification of the blank rolling of the heavy and medium plate mill comprises the following steps:
acquiring a roll length from the equipment capacity information, acquiring a blank initial width from the blank initial specification, and acquiring a blank rolling target width from the blank rolling target specification;
determining the first turning angle based on the roll body length, the initial billet width, and the target billet rolling width;
obtaining the corresponding reduction of each pass, and determining the second steel turning angle based on the reduction, the first steel turning angle, the initial width of the blank and the target width of the blank rolling;
the first-pass angle rolling and the second-pass angle rolling based on the combined rolling direction of the transmission device and the roller respectively comprise the following steps:
when the transmission device and the roller are determined to be in a first rolling direction, performing first-pass angle rolling on the slab at the first turning angle;
after the first angle rolling is finished, reversely braking the transmission device and the roller to enable the transmission device and the roller to be in a second rolling direction;
performing second-pass angle rolling on the plate blank at the first steel turning angle, wherein the second-pass angle rolling is opposite to the first-pass angle rolling in direction;
the rotating the slab based on the second turning angle, and performing the third-pass and the fourth-pass angle rolling based on the combined rolling direction of the transmission and the roller, respectively, includes:
rotating the slab based on the second steel turning angle after finishing the second pass angle rolling; when the transmission device and the roller are determined to be in the first rolling direction, performing third angle rolling on the slab at the second steel turning angle;
after the third angle rolling is finished, reversely braking the transmission device and the roller to enable the transmission device and the roller to be in a second rolling direction;
and performing fourth-pass angle rolling on the plate blank at the second turning angle, wherein the fourth-pass angle rolling is opposite to the third-pass angle rolling in direction.
2. The method of corner rolling a sheet material according to claim 1, wherein the method of corner rolling a sheet material further comprises, prior to the obtaining of the reduction corresponding to each pass:
acquiring a blank rolling target thickness from the blank rolling target specification;
and determining the reduction corresponding to each pass based on the blank rolling target thickness.
3. The method for corner rolling of a sheet material according to any one of claims 1 to 2, wherein after the target sheet material is obtained, the method for corner rolling of a sheet material further comprises:
acquiring actual specification data of the target plate;
calculating a rectangular degree value corresponding to the target plate based on the actual specification data;
and if the rectangular degree value does not meet the rectangular degree threshold condition, adjusting the first steel turning angle and the second steel turning angle.
4. A plate corner rolling device, characterized in that it performs the plate corner rolling method according to claim 1, comprising:
the turning angle determining module is used for determining a first turning angle and a second turning angle based on equipment capacity information of the heavy and medium plate mill, the initial specification of the blank and the target specification of the blank rolling;
the first control module is used for rotating the plate blank based on the first steel rotating angle and respectively carrying out first-pass angle rolling and second-pass angle rolling based on the combined rolling direction of the transmission device and the roller; the combined rolling direction comprises a group of two reverse rolling directions;
the second control module is used for rotating the plate blank based on the second steel turning angle, and respectively performing third-pass angle rolling and fourth-pass angle rolling based on the combined rolling direction of the transmission device and the roller to obtain a target plate;
the first control module includes:
a first pass control unit for performing a first pass angle rolling of the slab at the first turning angle when it is determined that the transmission and the roll are in a first rolling direction;
the reverse braking unit is used for reversely braking the transmission device and the roller after the first angle rolling is finished, so that the transmission device and the roller are in a second rolling direction;
the second-pass control unit is used for performing second-pass angular rolling on the plate blank at the first turning angle, and the second-pass angular rolling is opposite to the first-pass angular rolling in direction;
the second control module includes:
the third-pass control unit is used for rotating the slab based on the second steel turning angle after finishing the second-pass angle rolling; when the transmission device and the roller are determined to be in the first rolling direction, performing third angle rolling on the slab at the second steel turning angle;
the reverse braking unit is used for reversely braking the transmission device and the roller after the third corner rolling is finished, so that the transmission device and the roller are in a second rolling direction;
and the fourth-pass control unit is used for performing fourth-pass angular rolling on the plate blank at the second turning angle, and the fourth-pass angular rolling and the third-pass angular rolling are opposite in direction.
5. A storage medium having stored therein at least one executable instruction for performing operations corresponding to the method of corner rolling of sheet material according to any one of claims 1-3.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990053855A (en) * | 1997-12-24 | 1999-07-15 | 이구택 | Method for manufacturing a steel sheet with excellent corner perpendicularity |
| JP2007130672A (en) * | 2005-11-11 | 2007-05-31 | Jfe Steel Kk | Slab rolling method |
| CN102873105A (en) * | 2012-10-18 | 2013-01-16 | 广西柳州银海铝业股份有限公司 | Prediction method for rectangular flat material angular rolling width |
| CN111215459A (en) * | 2019-11-12 | 2020-06-02 | 中冶京诚工程技术有限公司 | Rolling mill area production equipment with push plate angle-adjustable push bed and hot rolling production line |
| CN115544423A (en) * | 2022-07-14 | 2022-12-30 | 南京钢铁股份有限公司 | Method for calculating width of rolled piece in angle rolling process of wide and thick plate rolling mill |
-
2023
- 2023-08-02 CN CN202310961288.8A patent/CN116651933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990053855A (en) * | 1997-12-24 | 1999-07-15 | 이구택 | Method for manufacturing a steel sheet with excellent corner perpendicularity |
| JP2007130672A (en) * | 2005-11-11 | 2007-05-31 | Jfe Steel Kk | Slab rolling method |
| CN102873105A (en) * | 2012-10-18 | 2013-01-16 | 广西柳州银海铝业股份有限公司 | Prediction method for rectangular flat material angular rolling width |
| CN111215459A (en) * | 2019-11-12 | 2020-06-02 | 中冶京诚工程技术有限公司 | Rolling mill area production equipment with push plate angle-adjustable push bed and hot rolling production line |
| CN115544423A (en) * | 2022-07-14 | 2022-12-30 | 南京钢铁股份有限公司 | Method for calculating width of rolled piece in angle rolling process of wide and thick plate rolling mill |
Non-Patent Citations (2)
| Title |
|---|
| 曹建宁等.中厚板角轧宽展技术的研发与应用.轧钢.2021,全文. * |
| 赵家骏编.板带钢生产.冶金工业出版社,1992,全文. * |
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