CN113926853A - Rolling method and device for high-grade non-oriented silicon steel - Google Patents
Rolling method and device for high-grade non-oriented silicon steel Download PDFInfo
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- CN113926853A CN113926853A CN202111083146.3A CN202111083146A CN113926853A CN 113926853 A CN113926853 A CN 113926853A CN 202111083146 A CN202111083146 A CN 202111083146A CN 113926853 A CN113926853 A CN 113926853A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 108
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 239000002994 raw material Substances 0.000 claims abstract description 43
- 238000009826 distribution Methods 0.000 claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 239000000839 emulsion Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 30
- 229910052710 silicon Inorganic materials 0.000 claims description 30
- 239000010703 silicon Substances 0.000 claims description 30
- 238000004590 computer program Methods 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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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
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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
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
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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
- B21B2001/221—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 by cold-rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2269/00—Roll bending or shifting
- B21B2269/02—Roll bending; vertical bending of rolls
- B21B2269/06—Intermediate roll bending
Abstract
The invention discloses a rolling method of high-grade non-oriented silicon steel, which is used for controlling a Sendzimir twenty-high rolling mill to roll a raw material strip steel, and comprises the following steps: determining the roll shape of a first intermediate roll and the roll shape of a second intermediate roll of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel; determining the effective plane amount of the first intermediate roll according to the alloy content of the raw material strip steel and the specification parameters; determining a convexity value of a radial adjusting mechanism of the Sendzimir twenty-high rolling mill according to the specification parameters; setting load distribution and tension when the Sendzimir twenty high rolling mill rolls according to the alloy content; and rolling the raw material strip steel according to the set load distribution and tension distribution, and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product. The method can reduce brittle fracture of high-grade non-oriented silicon steel in the rolling process and improve the rolling stability and production efficiency.
Description
Technical Field
The invention relates to the field of cold rolling, in particular to a rolling method and a device for high-grade non-oriented silicon steel.
Background
The high-grade non-oriented silicon steel is mainly applied to the fields of large and medium motors, high-energy-efficiency compressors and the like, and has the characteristics of low iron loss and high magnetic induction. In the production process of the high-grade non-oriented silicon steel, the high-grade non-oriented silicon steel is generally rolled by a single stand due to the limitations of high silicon content, large deformation resistance and other process characteristics, and the high-grade non-oriented silicon steel is generally poor in plasticity and easy to generate coiling brittle fracture in the rolling process of a single stand rolling mill, and particularly, the plasticity is poor along with the increase of the silicon content, so that the probability of coiling brittle fracture is higher during rolling. When the first pass of rolling is finished or the second pass of rolling is started, if the strip is broken during rolling, the success rate of strip threading and coiling of the steel coil is almost zero, and the whole coil of steel coil cannot be rolled and scrapped, so that the problem of brittle fracture during coiling of high-grade non-oriented silicon steel is urgently solved.
Disclosure of Invention
The invention aims to provide a rolling method and a device for high-grade non-oriented silicon steel, which can reduce brittle fracture of the high-grade non-oriented silicon steel in the rolling process and improve the rolling stability and the production efficiency.
The embodiment of the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides a rolling method for high-grade non-oriented silicon steel, which is used for controlling a sendzimir twenty-roller mill to roll a raw strip steel, and the method includes:
determining the roll shape of a first intermediate roll and the roll shape of a second intermediate roll of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel;
determining the effective plane amount of the first intermediate roll according to the alloy content of the raw material strip steel and the specification parameters;
determining a convexity value of a radial adjusting mechanism of the Sendzimir twenty-high rolling mill according to the specification parameters;
setting load distribution and tension when the Sendzimir twenty high rolling mill rolls according to the alloy content;
and rolling the raw material strip steel according to the set load distribution and tension distribution, and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product.
Optionally, the determining, according to the specification parameters of the raw material strip steel, the roll shape of a first intermediate roll and the roll shape of a second intermediate roll of the sendzimir twenty-high rolling mill includes:
and when the width of the raw material strip steel is within a preset width range, determining that the roller shape of the first middle roller is a conical roller and determining that the roller shape of the second middle roller is a convexity roller.
Optionally, determining the effective plane amount of the first intermediate roll according to the alloy content of the raw material strip steel and the specification parameters includes:
when the silicon content of the raw material strip steel is within a preset silicon content range and the width of the raw material strip steel is within the preset width range, determining the distance between the taper angle of the first intermediate roll and the edge of the raw material strip steel;
by the formula: and F-2 b, determining the effective plane amount of the first intermediate roll, wherein F is the effective plane amount of the first intermediate roll, W is the width of the raw material strip steel, and b is the distance between the taper angle of the first intermediate roll and the edge of the raw material strip steel.
Optionally, when the silicon content of the raw material strip steel is within a preset silicon content range, and the width of the raw material strip steel is within a preset width value range, determining the distance between the taper angle of the first intermediate roll and the edge of the raw material strip steel, including:
when the silicon content is 2.0 wt% -4.5 wt% and W is more than or equal to 900mm and less than or equal to 1050mm, determining that T is 375mm and b is 95 mm-115 mm;
when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1050mm and not more than 1100mm, determining that b is 90 mm-100 mm;
when the silicon content is 2.0-4.5 wt% and W is not less than 1100mm and not more than 1200mm, determining that b is 85-105 mm;
when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1200mm and not more than 1300mm, determining b is 80 mm-100 mm.
Optionally, the determining a crown value of a radial adjustment mechanism of the sendzimir twenty-high rolling mill according to the specification parameters includes:
the radial adjustment mechanism has a greater crown value when the given strip width is smaller.
Optionally, the setting of load distribution and tension distribution when the sendzimir twenty-roll mill rolls according to the alloy content includes:
when the silicon content of the raw material strip steel is within the preset silicon content range, setting the first pass load distribution to be 20-50%, setting the other pass load distribution to be 15-45%, and setting the unit tension of each pass to be 4.0-25.0 kg/mm2。
Optionally, the rolling is performed on the strip steel according to the set load distribution and the set tension, and the spraying is performed at the preset emulsion flow rate, so as to obtain a finished product, including:
setting the flow rate of the emulsion to be 20-30% of the maximum flow rate of the emulsion when starting rolling in each pass; and setting the maximum flow of the emulsion to be 50-60% of the maximum flow when each pass of stable rolling is set.
In a second aspect, an embodiment of the present invention provides a rolling apparatus for high-grade non-oriented silicon steel, including:
the first determining module is used for determining the roll shape of a first intermediate roll and the roll shape of a second intermediate roll of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel;
the second determining module is used for determining the effective plane quantity of the first intermediate roll according to the alloy content of the raw material strip steel and the specification parameters;
the third determining module is used for determining the convexity value of a radial adjusting mechanism of the Sendzimir twenty-high rolling mill according to the specification parameters;
the setting module is used for setting load distribution and tension when the Sendzimir twenty-high rolling mill rolls according to the alloy content;
and the control module is used for rolling the raw material strip steel according to the set load distribution and tension distribution and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product.
In a third aspect, an embodiment of the present invention provides a rolling apparatus for high-grade non-oriented silicon steel, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method for rolling high-grade non-oriented silicon steel of any one of the first aspects.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, the computer program being executed by a processor to implement the steps of the method for rolling high-grade non-oriented silicon steel described in any one of the first aspects.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the rolling method of the high-grade non-oriented silicon steel provided by the embodiment of the invention, the roll shapes of the first intermediate roll and the second intermediate roll and the convexity value of the radial adjusting mechanism are determined according to the alloy content of the raw material strip steel and the specification parameters, the effective plane amount of the first intermediate roll and the load distribution and tension during rolling are set, and the rolling is carried out by adopting the preset emulsion flow during rolling, so that the tensile stress at the edge of the strip steel can be effectively reduced, the high-grade non-oriented silicon steel is prevented from being subjected to brittle fracture due to the tensile stress during the rolling process, the cold rolling stability of the high-grade non-oriented silicon steel is improved, and the quality of the high-grade non-oriented silicon steel is ensured. When the high-grade non-oriented silicon steel is rolled by the rolling method provided by the invention, the rolling process is stable, and the rolling brittle fracture rate is reduced from 4.8% before the use of the method to 1.2% after the use of the method.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for rolling high-grade non-oriented silicon steel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a Sendzimir twenty high roll mill controlled by the rolling method for high grade non-oriented silicon steel shown in FIG. 1 to roll a strip of stock steel;
fig. 3 is a schematic structural view of a rolling device for high-grade non-oriented silicon steel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a rolling method of high-grade non-oriented silicon steel according to an embodiment of the present invention. In the embodiment, the rolling method is used for controlling a Sendzimir twenty-high roll mill to roll the raw strip steel 3 so as to obtain the finished high-grade non-oriented silicon steel.
Referring to fig. 2, the sendzimir twenty-roll mill includes a first intermediate roll 1, a work roll 2, and a second intermediate roll (not shown). The first intermediate roll 1 comprises a Sendzimir twenty high roll mill having a roll center 3, and when rolling is performed, a raw strip 4 is positioned between the work rolls 2 and is symmetrical about the center 3.
Please refer to fig. 1 again. The rolling method of the high-grade non-oriented silicon steel comprises the following steps:
and step S1, determining the roll shape of a first intermediate roll 1 and the roll shape of a second intermediate roll 2 of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw material strip steel 4.
Specifically, when the width of the raw material strip steel 4 is within a preset width range, the roller shape of the first intermediate roller 1 is determined to be a tapered roller, and the roller shape of the second intermediate roller 2 is determined to be a crowned roller.
In this embodiment, the preset width ranges from 900mm to 1050 mm. The roller shape of the first intermediate roller 1 is a conical roller with two sections of tapers at one end, the taper length is T, the taper height is h, the taper slope is the ratio of h to T, the value is between 1 per thousand and 3 per thousand, in the first intermediate roller 1, the taper of the previous first intermediate roller 1 is on the working side, the taper of the next first intermediate roller 1 is on the transmission side, the lengths and slopes of the tapers are the same, the roller shape of the second intermediate roller 2 is a convex roller with a parabolic curve, and the convexity is 0.05-0.15%.
And step S2, determining the effective plane quantity of the first intermediate roll 1 according to the alloy content of the raw material strip steel 4 and the specification parameters. The method specifically comprises the following steps:
and step S21, when the silicon content of the raw material strip steel 4 is within a preset silicon content range and the width of the raw material strip steel 4 is within the preset width range, determining the distance between the taper angle of the first intermediate roll 1 and the edge of the raw material strip steel 4. In one embodiment, when the silicon content is 2.0 wt% to 4.5 wt% and 900mm ≦ W ≦ 1050mm, T375 mm and b 95mm to 115mm are determined; when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1050mm and not more than 1100mm, determining that T is 300mm and b is 90 mm-100 mm; when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1100mm and not more than 1200mm, determining that T is 255mm and b is 85 mm-105 mm; when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1200mm and not more than 1300mm, determining that T is 255mm and b is 80 mm-100 mm.
Step S22, by the formula: and determining the effective plane amount of the first intermediate roll 1, wherein F is the effective plane amount of the first intermediate roll 1, W is the width of the raw strip 4, and b is the distance between the taper angle of the first intermediate roll 1 and the edge of the raw strip 4.
And step S3, determining the convexity value of the radial adjusting mechanism of the Sendzimir twenty-high rolling mill according to the specification parameters.
In particular, the radial adjustment mechanism (ASU) has a higher camber value when the given width of the raw strip 4 is smaller.
In one embodiment, when W is 900mm ≦ 1050mm, the ASU convexity is determined to be 60;
when W is more than or equal to 1050mm and less than or equal to 1100mm, determining the convexity of the ASU to be 50;
when W is more than or equal to 1100mm and less than or equal to 1200mm, determining the convexity of the ASU to be 40;
when W is more than or equal to 1200mm and less than or equal to 1300mm, the convexity of the ASU is determined to be 35.
In another embodiment, the predetermined ASU value before the first start rolling of the raw strip 4 may be further determined by combining the crown of the second intermediate roll 2 and the width of the given raw strip 4, in this embodiment, the crown of the second intermediate roll 2 is 0.15%.
And step S4, setting load distribution and tension when the Sendzimir twenty high rolling mill rolls according to the alloy content. In this embodiment, the raw strip 4 is subjected to a predetermined pass, for example, 4 to 7 passes.
When the silicon content of the raw material strip steel 4 is within the preset silicon content range, setting the first pass load distribution to be 20-50%, setting the other pass load distribution to be 15-45%, and setting the unit tension of each pass to be 4.0-25.0 kg/mm2。
And step S5, rolling the raw material strip steel 4 according to the set load distribution and tension distribution, and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product. In this embodiment, the thickness of the finished product is 0.2-1.0 mm.
The step S5 specifically includes:
setting the flow rate of the emulsion to be 20-30% of the maximum flow rate of the emulsion when starting rolling in each pass; and
when stable rolling of each pass is set, the maximum emulsion flow is set to be 50-60% of the maximum flow.
It will be appreciated that the above-mentioned preset values are confirmed at the rolling surface definition before the first start.
Based on the same inventive concept as the method, an embodiment of the present invention further provides a rolling apparatus 100 for high-grade non-oriented silicon steel, as shown in fig. 3, which is a schematic structural diagram of an embodiment of the apparatus 100, and the apparatus 100 includes:
the first determining module 10 is used for determining the roll shape of a first intermediate roll 1 and the roll shape of a second intermediate roll 2 of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel 4;
the second determining module 20 is used for determining the effective plane amount of the first intermediate roll 1 according to the alloy content of the raw material strip steel 4 and the specification parameters;
a third determining module 30, configured to determine a crown value of a radial adjusting mechanism of the sendzimir twenty-high rolling mill according to the specification parameter;
the setting module 40 is used for setting load distribution and tension when the Sendzimir twenty-high rolling mill rolls according to the alloy content;
and the control module 50 is used for rolling the raw material strip steel 4 according to the set load distribution and tension distribution, and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product.
Based on the same inventive concept as that in the previous embodiment, the embodiment of the present invention further provides a rolling device for high-grade non-oriented silicon steel, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of any one of the above rolling methods for high-grade non-oriented silicon steel.
Based on the same inventive concept as in the previous embodiment, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of any of the foregoing methods for determining an occurrence position of a hot continuous rolling mill chattering mark.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
according to the rolling method of the high-grade non-oriented silicon steel provided by the embodiment of the invention, according to the alloy content of the raw material strip steel 4 and the specification parameters, the roll shapes of the first intermediate roll 1 and the second intermediate roll 2 and the convexity values of the radial adjusting mechanisms are determined, the effective plane amount of the first intermediate roll 1 and the load distribution and tension during rolling are set, and the rolling is carried out by adopting the preset emulsion flow during rolling, so that the tensile stress at the edge of the strip steel can be effectively reduced, the high-grade non-oriented silicon steel is prevented from being subjected to brittle fracture due to the tensile stress during the rolling process, the stability of cold rolling of the high-grade non-oriented silicon steel is improved, and the quality of the high-grade non-oriented silicon steel is ensured. When the high-grade non-oriented silicon steel is rolled by the rolling method provided by the invention, the rolling process is stable, and the rolling brittle fracture rate is reduced from 4.8% before the use of the method to 1.2% after the use of the method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A rolling method of high-grade non-oriented silicon steel is used for controlling a Sendzimir twenty-high roll mill to roll a raw material strip steel, and is characterized by comprising the following steps:
determining the roll shape of a first intermediate roll and the roll shape of a second intermediate roll of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel;
determining the effective plane amount of the first intermediate roll according to the alloy content of the raw material strip steel and the specification parameters;
determining a convexity value of a radial adjusting mechanism of the Sendzimir twenty-high rolling mill according to the specification parameters;
setting load distribution and tension when the Sendzimir twenty high rolling mill rolls according to the alloy content;
and rolling the raw material strip steel according to the set load distribution and tension distribution, and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product.
2. The method of rolling high-grade non-oriented silicon steel as claimed in claim 1, wherein the determining the roll profile of the first intermediate roll and the roll profile of the second intermediate roll of the sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel comprises:
and when the width of the raw material strip steel is within a preset width range, determining that the roller shape of the first middle roller is a conical roller and determining that the roller shape of the second middle roller is a convexity roller.
3. The method of rolling high-grade non-oriented silicon steel as claimed in claim 1, wherein the determining the effective plane amount of the first intermediate roll according to the alloy content of the raw strip and the specification parameters comprises:
when the silicon content of the raw material strip steel is within a preset silicon content range and the width of the raw material strip steel is within the preset width range, determining the distance between the taper angle of the first intermediate roll and the edge of the raw material strip steel;
by the formula: and F-2 b, determining the effective plane amount of the first intermediate roll, wherein F is the effective plane amount of the first intermediate roll, W is the width of the raw material strip steel, and b is the distance between the taper angle of the first intermediate roll and the edge of the raw material strip steel.
4. The method of rolling high-grade non-oriented silicon steel as claimed in claim 3, wherein the determining the distance between the taper angle of the first intermediate roll and the edge of the raw strip when the silicon content of the raw strip is within a preset silicon content range and the width of the raw strip is within a preset width value range comprises:
when the silicon content is 2.0-4.5 wt% and W is not less than 900mm and not more than 1050mm, determining that b is 95-115 mm;
when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1050mm and not more than 1100mm, determining that b is 90 mm-100 mm;
when the silicon content is 2.0-4.5 wt% and W is not less than 1100mm and not more than 1200mm, determining that b is 85-105 mm;
when the silicon content is 2.0 wt% -4.5 wt% and W is not less than 1200mm and not more than 1300mm, determining b is 80 mm-100 mm.
5. The method of rolling high-grade non-oriented silicon steel of claim 1, wherein the determining a crown value of a radial adjustment mechanism of the sendzimir twenty-high rolling mill based on the gauge parameters comprises:
the radial adjustment mechanism has a crown value that is greater when the given width of the strip of feedstock is smaller.
6. The method of rolling high-grade non-oriented silicon steel as claimed in claim 1, wherein the setting of load distribution and tension distribution when the sendzimir twenty-high rolling mill is rolling according to the alloy content comprises:
when the silicon content of the raw material strip steel is within the preset silicon content range, setting the first pass load distribution to be 20-50% and the other pass load distributions to be 15-45%And setting the unit tension of each pass to be 4.0-25.0 kg/mm2。
7. The method for rolling high-grade non-oriented silicon steel as claimed in claim 1, wherein the step of rolling the strip steel according to the set load distribution and tension and spraying at the preset emulsion flow rate to obtain the finished product comprises the following steps:
setting the flow rate of the emulsion to be 20-30% of the maximum flow rate of the emulsion when starting rolling in each pass; and
when stable rolling of each pass is set, the maximum emulsion flow is set to be 50-60% of the maximum flow.
8. A rolling device for high-grade non-oriented silicon steel is characterized by comprising:
the first determining module is used for determining the roll shape of a first intermediate roll and the roll shape of a second intermediate roll of the Sendzimir twenty-high rolling mill according to the specification parameters of the raw strip steel;
the second determining module is used for determining the effective plane quantity of the first intermediate roll according to the alloy content of the raw material strip steel and the specification parameters;
the third determining module is used for determining the convexity value of a radial adjusting mechanism of the Sendzimir twenty-high rolling mill according to the specification parameters;
the setting module is used for setting load distribution and tension when the Sendzimir twenty-high rolling mill rolls according to the alloy content;
and the control module is used for rolling the raw material strip steel according to the set load distribution and tension distribution and spraying at a preset emulsion flow rate in the rolling process to obtain a finished product.
9. A rolling equipment of high-grade non-oriented silicon steel is characterized by comprising:
a memory for storing a computer program;
a processor for executing the computer program to carry out the steps of the method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, is adapted to carry out the steps of the method of any one of claims 1 to 7.
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