CN117216815A - Optimal blank design method for double-sizing order under MAS plane rectangular rolling working condition - Google Patents

Optimal blank design method for double-sizing order under MAS plane rectangular rolling working condition Download PDF

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Publication number
CN117216815A
CN117216815A CN202311059620.8A CN202311059620A CN117216815A CN 117216815 A CN117216815 A CN 117216815A CN 202311059620 A CN202311059620 A CN 202311059620A CN 117216815 A CN117216815 A CN 117216815A
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China
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blank
double
width
optimal
material type
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CN202311059620.8A
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Inventor
李�灿
周彩勤
杜方海
张以波
丁小恒
胡永斌
温红
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Nanjing Iron and Steel Co Ltd
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Nanjing Iron and Steel Co Ltd
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Priority to CN202311059620.8A priority Critical patent/CN117216815A/en
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Abstract

The application discloses an optimal blank design method of double-sizing orders under the working condition of MAS plane rectangle rolling, which relates to the technical field of metallurgy and comprises the following steps: defining a blank size for a double sizing order; establishing a reference material type library, wherein the reference material type library comprises blank sizes, product sizes and design yield; and grabbing the optimal material type of the double-scale order. By adopting the method provided by the application, the yield can be improved by 0.15% under the working condition of MAS plane rectangular rolling, the difference between the plate blank and the steel plate edge wire is 900 yuan/ton, the annual output is 215 ten thousand tons, and the benefit 2150000 is 0.15%, 900=290 ten thousand yuan.

Description

Optimal blank design method for double-sizing order under MAS plane rectangular rolling working condition
Technical Field
The application relates to the technical field of metallurgy, in particular to an optimal blank design method for a double-sizing order under a MAS plane rectangular rolling working condition.
Background
Taking a certain domestic middle plate rolling line as an example, the roughing mill has the MAS plane rectangular function after being modified. In the conventional plate rolling line, the function of the roughing mill MAS plane rectangle is not fully exerted, and the yield of the plate during rolling is low.
Disclosure of Invention
The application aims to solve the technical problem of overcoming the defects of the prior art and providing an optimal blank design method for double-sizing orders under the working condition of MAS planar rectangular rolling.
In order to solve the technical problems, the technical scheme of the application is as follows:
an optimal blank design method for a double-sizing order under the working condition of MAS planar rectangular rolling comprises the following steps:
defining a blank size for a double sizing order;
establishing a reference material type library, wherein the reference material type library comprises blank sizes, product sizes and design yield;
and grabbing the optimal material type of the double-scale order.
As a preferable scheme of the optimal blank design method of the double-sizing order under the working condition of MAS planar rectangular rolling, the application comprises the following steps: the blank sizes defining the double-sized order include:
when the thickness of the blank is 150mm or 180mm, the furnace charging conditions of the widening material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2660 mm; when the width of the blank is more than or equal to 2050mm, the length of the blank is between 850 and 2660 mm; the charging conditions of the full-longitudinal rolling material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2700mm or 4300-5650 mm; when the blank width is more than or equal to 2050, the blank length is 1450-2700mm or 4300-5650 mm;
when the thickness of the blank is 220mm or 260mm or 320mm, the furnace charging conditions of the widening material type are as follows: when the blank width is less than 2050mm, the blank length is 2050-2660 mm; when the width of the blank is more than or equal to 2050mm, the length of the blank is 1000-2660 mm; the charging conditions of the full-longitudinal rolling material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2700mm or 4300-5650 mm; when the blank width is more than or equal to 2050, the blank length is 1450-2700mm or 4300-5650 mm.
As a preferable scheme of the optimal blank design method of the double-sizing order under the working condition of MAS planar rectangular rolling, the application comprises the following steps: the judging conditions of the broadening material type are as follows: the rolling target width-blank minimum size is more than 25, and the judging conditions of the full-longitudinal rolling material are as follows: the rolling target width-blank minimum size is less than or equal to 25.
As a preferable scheme of the optimal blank design method of the double-sizing order under the working condition of MAS planar rectangular rolling, the application comprises the following steps: the establishing the reference material type library comprises the following steps:
twelve reference blank sizes of 220mm x 1665mm, 220mm x 1865mm, 220mm x 2065mm, 220mm x 2265mm, 180mm x 166 mm, 180mm x 1865mm, 180mm x 2065mm, 180mm x 2265mm, 260mm x 1860 mm, 260mm x 2060mm, 260mm x 2260mm, 260mm x 2560mm are established.
As a preferable scheme of the optimal blank design method of the double-sizing order under the working condition of MAS planar rectangular rolling, the application comprises the following steps: the grabbing the optimal material type of the double-sizing order comprises the following steps:
when the thickness of the order is less than 20mm, screening the material type with the continuous casting widening ratio between 1.05 and 1.5;
screening the blank with the length of 1900-2700 mm or 4300-5650mm when the thickness of the blank is 180mm or 220 mm; screening the blank with the length of 2000-2700 mm or 4300-5650mm when the thickness of the blank is 260 mm;
and screening the blank with the highest design yield from the reference material type library to be used as the optimal material type.
As a preferable scheme of the optimal blank design method of the double-sizing order under the working condition of MAS planar rectangular rolling, the application comprises the following steps: the continuous casting widening ratio is a rolling target width/continuous casting width.
The beneficial effects of the application are as follows:
by adopting the method provided by the application, the yield can be improved by 0.15% under the working condition of MAS plane rectangular rolling, the difference between the plate blank and the steel plate edge wire is 900 yuan/ton, the annual output is 215 ten thousand tons, and the benefit 2150000 is 0.15%, 900=290 ten thousand yuan.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a reference stock library in the method for designing an optimal blank for a double sizing order under the working condition of MAS planar rectangular rolling provided by the present application.
Detailed Description
In order that the application may be more readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
The embodiment of the application provides an optimal blank design method for a double-sizing order under the working condition of MAS planar rectangular rolling. The method comprises the following steps of S101-S103, wherein the specific steps are as follows:
step S101: the blank size of the double sizing order is defined.
Specifically, when the thickness of the blank is 150mm or 180mm, the furnace charging conditions of the stretching material type are as follows: when the blank width is less than 2050mm, the blank length is 2050-2660 mm; when the width of the blank is more than or equal to 2050mm, the length of the blank is between 850 and 2660 mm; the charging conditions of the full-longitudinal rolling material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2700mm or 4300-5650 mm; when the blank width is more than or equal to 2050, the blank length is 1450-2700mm or 4300-5650 mm.
When the thickness of the blank is 220mm or 260mm or 320mm, the furnace charging conditions of the widening material type are as follows: when the blank width is less than 2050mm, the blank length is 2050-2660 mm; when the width of the blank is more than or equal to 2050mm, the length of the blank is 1000-2660 mm; the charging conditions of the full-longitudinal rolling material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2700mm or 4300-5650 mm; when the blank width is more than or equal to 2050, the blank length is 1450-2700mm or 4300-5650 mm.
The conditions for determining the spread material were: rolling target width-blank minimum dimension > 25. The judging conditions of the full-longitudinal rolling material are as follows: the rolling target width-blank minimum size is less than or equal to 25.
Step S102: and establishing a reference material type library, wherein the reference material type library comprises blank sizes, product sizes and design yield.
Specifically, when designing a blank, twelve reference shapes of 220mm x 1665mm, 220mm x 1865mm, 220mm x 2065mm, 220mm x 2265mm, 180mm x 166 mm, 180mm x 1865mm, 180mm x 2065mm, 180mm x 2265mm, 260mm x 1860 mm, 260mm x 2060mm, 260mm x 2260mm, 260mm x 2560mm are first established. Meanwhile, when the thickness of the order is more than or equal to 20mm, a single-row-channel non-standard-section full-longitudinal rolling material is established. If the subsequent machine No. 3 is adjusted to 220 sections, whether to increase 220 x 1860, 220mm x 2060mm, 220mm x 2260mm and 220mm x 2560mm sections is considered.
A "cut" type order, order width=1600, 1800, 2000, 2200, 2500, is a standard order width, at which time no more non-standard width full-tandem rolling stock needs to be added to the reference stock. A standard order width "cut" type order requires the creation of 12 reference stock types in the process.
The order width is not the non-standard order width unless mentioned above. The 'trimming' type order, 180, 220 blank thickness, add and put the rule 65m on the basis of order width, set up the single row of material type of non-standard width; for example, the order width 2100 is increased by 180mm 2165mm, 220mm 2165mm and 260mm 2160mm sections. Non-standard order width, 15 reference pattern libraries need to be built.
Step S103: and grabbing the optimal material type of the double-scale order.
Specifically, the continuous casting widening ratio is firstly screened. Wherein the continuous casting widening ratio is a rolling target width/continuous casting width. The method comprises the following steps: when the thickness of the order is less than 20mm, screening the material type with the continuous casting widening ratio of 1.05-1.5; when the thickness of the order is more than or equal to 20mm, the step is skipped, and the screening of the continuous casting widening ratio is not carried out.
And then screening the size of the blank, specifically: screening the blank with the length of 1900-2700 mm or 4300-5650mm when the thickness of the blank is 180mm or 220 mm; when the thickness of the blank is 260mm, screening the blank with the length of 2000mm-2700mm or 4300mm-5650 mm.
And finally, selecting a blank with the highest yield from the reference material type library to be used as an optimal material type.
Taking the order of fig. 1 as an example, a double-sizing order with the specification of 10mm x 2000mm x 14000mm is adopted, and before the method is not adopted, the adopted blank size material type is 220mm x 2065mm x 2056mm, the order is rolled, and the design yield is only 89.9%. After the method is adopted, 220mm x 1865mm x 2255mm blanks are intelligently screened out by a system to roll the order, the yield is designed to be as high as 90.8%, and compared with the method not adopted, the yield is improved by 0.9%, and the method has very obvious effect on improving the yield of the order.
In addition to the above embodiments, the present application may have other embodiments; all technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the application.

Claims (6)

1. An optimal blank design method for a double-sizing order under the working condition of MAS planar rectangular rolling is characterized by comprising the following steps: comprising the following steps:
defining a blank size for a double sizing order;
establishing a reference material type library, wherein the reference material type library comprises blank sizes, product sizes and design yield;
and grabbing the optimal material type of the double-scale order.
2. The method for designing the optimal blank for the double sizing order under the working condition of planar rectangular MAS rolling according to claim 1, wherein the method comprises the following steps of: the blank sizes defining the double-sized order include:
when the thickness of the blank is 150mm or 180mm, the furnace charging conditions of the widening material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2660 mm; when the width of the blank is more than or equal to 2050mm, the length of the blank is between 850 and 2660 mm; the charging conditions of the full-longitudinal rolling material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2700mm or 4300-5650 mm; when the blank width is more than or equal to 2050, the blank length is 1450-2700mm or 4300-5650 mm;
when the thickness of the blank is 220mm or 260mm or 320mm, the furnace charging conditions of the widening material type are as follows: when the blank width is less than 2050mm, the blank length is 2050-2660 mm; when the width of the blank is more than or equal to 2050mm, the length of the blank is 1000-2660 mm; the charging conditions of the full-longitudinal rolling material are as follows: when the blank width is less than 2050mm, the blank length is 2050-2700mm or 4300-5650 mm; when the blank width is more than or equal to 2050, the blank length is 1450-2700mm or 4300-5650 mm.
3. The method for designing the optimal blank for the double sizing order under the working condition of planar rectangular MAS rolling according to claim 2, which is characterized in that: the judging conditions of the broadening material type are as follows: the rolling target width-blank minimum size is more than 25, and the judging conditions of the full-longitudinal rolling material are as follows: the rolling target width-blank minimum size is less than or equal to 25.
4. The method for designing the optimal blank for the double sizing order under the working condition of planar rectangular MAS rolling according to claim 1, wherein the method comprises the following steps of: the establishing the reference material type library comprises the following steps:
twelve reference blank sizes of 220mm x 1665mm, 220mm x 1865mm, 220mm x 2065mm, 220mm x 2265mm, 180mm x 166 mm, 180mm x 1865mm, 180mm x 2065mm, 180mm x 2265mm, 260mm x 1860 mm, 260mm x 2060mm, 260mm x 2260mm, 260mm x 2560mm are established.
5. The method for designing the optimal blank for the double sizing order under the working condition of planar rectangular MAS rolling according to claim 1, wherein the method comprises the following steps of: the grabbing the optimal material type of the double-sizing order comprises the following steps:
when the thickness of the order is less than 20mm, screening the material type with the continuous casting widening ratio between 1.05 and 1.5;
screening the blank with the length of 1900-2700 mm or 4300-5650mm when the thickness of the blank is 180mm or 220 mm; screening the blank with the length of 2000-2700 mm or 4300-5650mm when the thickness of the blank is 260 mm;
and screening the blank with the highest design yield from the reference material type library to be used as the optimal material type.
6. The method for designing the optimal blank for the double sizing order under the working condition of planar rectangular MAS rolling according to claim 5, which is characterized in that: the continuous casting widening ratio is a rolling target width/continuous casting width.
CN202311059620.8A 2023-08-22 2023-08-22 Optimal blank design method for double-sizing order under MAS plane rectangular rolling working condition Pending CN117216815A (en)

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Application Number Priority Date Filing Date Title
CN202311059620.8A CN117216815A (en) 2023-08-22 2023-08-22 Optimal blank design method for double-sizing order under MAS plane rectangular rolling working condition

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