CN114951297A - Hot-rolled bar cooling bed material tracking and product quality tracing method - Google Patents
Hot-rolled bar cooling bed material tracking and product quality tracing method Download PDFInfo
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- CN114951297A CN114951297A CN202210756027.8A CN202210756027A CN114951297A CN 114951297 A CN114951297 A CN 114951297A CN 202210756027 A CN202210756027 A CN 202210756027A CN 114951297 A CN114951297 A CN 114951297A
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000001133 acceleration Effects 0.000 claims description 21
- 238000012546 transfer Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000010008 shearing Methods 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 4
- 239000002436 steel type Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 multiple length Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- G—PHYSICS
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- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06395—Quality analysis or management
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Abstract
The invention discloses a hot-rolled bar cooling bed material tracking and product quality tracing method. The method comprises the following steps: acquiring parameters related to the material of the cooling bed; calculating the real-time position of the rolled piece and the temperature of the rolled piece by using the acquired parameters; when the mode is an off-line mode, the temperature of the rolled piece when the rolled piece is put on a cooling bed is measured and calculated by using the calculated rolled piece parameters; if the measured lower cooling bed temperature is higher than the preset value, the cooling bed parameters are reversely calculated until the proper parameters meeting the lower cooling bed temperature requirement are obtained; and outputting the calculated proper parameters to corresponding equipment; when the mode is the online mode, the real-time tracking and the real-time display of the temperature state of the rolled piece are realized by utilizing the calculated parameters of the rolled piece; when the red inspection is unqualified, according to the sampling time, historical data is inquired, the corresponding rolled piece number and the corresponding billet number are quickly found, the current rolling process parameters are reversely inquired, the parameters are analyzed, and the adjustment reasons and suggestions are pushed in real time by combining with the expert experience.
Description
Technical Field
The invention relates to a hot-rolled bar cooling bed material tracking and product quality tracing system.
Background
In the production process of the hot rolled bar, the rolled piece after water cooling in the main rolling line area is sent to a multiple-length flying shear, and the multiple-length flying shear performs length optimization segmented shearing and is cut into multiple lengths suitable for the length of a cooling bed. The segmented rolled piece is conveyed by an input roller way, is braked by a friction brake plate and then is sent into a stepping cooling bed, and the rolled piece is cooled, sampled and aligned on the cooling bed. Before the cold bed is put down, one end of a rolled piece is aligned to one end of the cold bed in the output direction by an alignment roller way, then a row of steel groups are formed by a chain type transfer machine according to certain intervals and quantity, and the steel groups are transferred to the cold bed output roller way in rows by a steel transfer trolley device. The cold bed output roller way conveys the steel discharged from the cold bed to a cold shear to be cut into a fixed length. A typical cold bed process layout is shown in figure 1.
The cooling bed has two functions, namely cooling the rolled piece, cooling the high-temperature rolled piece (800-1000 ℃) to a low temperature (100-300 ℃), and straightening the rolled piece. The temperature evolution condition of the rolled piece on the cooling bed is difficult to calculate due to the complex influences of steel types, the size of the rolled piece, the section shape of the rolled piece, equipment factors and the like, and is usually estimated through some theoretical formulas at present.
After the cold bed sampling is carried out the hot inspection, when the product size does not meet the product requirement, the technological parameters causing the quality deviation must be researched, at the moment, the sampled rolled piece is associated with the production of the preorder process section, namely, the quality tracing becomes necessary, and through analysis, the technological parameters and the equipment parameters of the preorder process section such as a main rolling line area, a heating furnace and the like are adjusted, so that the product quality is ensured.
Disclosure of Invention
The invention provides a visual cooling bed material tracking system based on process parameter measurement, a differential algorithm and Web development, aiming at the condition that more information blanks exist in cooling bed process section material tracking, temperature evolution and product quality tracing after multi-length shearing at present. The method can be used for designing the size parameters (off-line mode) of the cooling bed, and can also be used for setting the technological parameters of the cooling bed and tracking the material and tracing the quality of the rolled piece on the cooling bed (on-line mode) during the actual production.
In order to achieve the purpose, the invention discloses a material tracking and product quality tracing method for a hot-rolled bar cooling bed, which at least comprises the following steps:
acquiring parameters related to the material of the cooling bed;
calculating the real-time position of the rolled piece and the temperature of the rolled piece by using the acquired parameters;
when the mode is an off-line mode, the temperature of the rolled piece is measured and calculated when the rolled piece is put on a cooling bed by using the calculated real-time position of the rolled piece and the temperature of the rolled piece;
if the measured lower cooling bed temperature is lower than the preset value, the cooling bed parameters are reversely calculated until suitable parameters meeting the lower cooling bed temperature requirement are obtained;
and outputting the calculated proper parameters to corresponding equipment;
when the mode is an online mode, real-time tracking of rolled piece materials and real-time display of temperature states are achieved by means of the calculated real-time positions of the rolled pieces and the temperatures of the rolled pieces; when unqualified products appear in red inspection, according to sampling time, historical data is inquired, corresponding rolled piece numbers and billet numbers are quickly found out, current rolling process parameters are inquired reversely, the parameters are analyzed, and adjustment reasons and suggestions are pushed to a main rolling line area in real time in combination with expert experience; thereby ensuring the subsequent product quality.
Further, for the off-line mode, the material-related parameters of the cooling bed include:
freely setting the speed of a rolled piece after multi-length shearing, the length of an acceleration roller way after multi-length shearing, the acceleration of the rolled piece on the acceleration roller way, the length and the acceleration of a cold bed input roller way, the temperature of the cold bed on the rolled piece, the length and the acceleration of a friction brake plate, the stepping pitch of the cold bed, the stepping period, the movement period of an alignment roller way, the size and the running speed of a chain type transfer machine, the size and the action time consumption of a steel moving trolley and the same shearing number of the cold shearing machine;
for the on-line mode, the material-related parameters of the cooling bed include: the length of the built-in multiple-length shear rear acceleration roller way, the length of the cold bed input roller way, the length of a friction braking plate, the cold bed stepping pitch, the size of a chain type transfer machine and the size of a steel moving trolley are combined.
Further, the system calculates the real-time position of the rolled piece and the temperature of the rolled piece according to the acquired parameters related to the cooling bed and the material, the designed steel grade, the multiple length and the product specification and based on a Fourier heat transfer two-dimensional difference algorithm by comprehensively considering heat conduction, heat convection and heat radiation.
The invention is achieved by using the respective necessary detection elements on the conventional cold bed process section. On one hand, when the hot-rolled bar is produced, material tracking and data acquisition of product size performance are realized, and the tracing of material position and product quality is visually displayed; on the other hand, based on preset temperatures of an upper cooling bed and a lower cooling bed of a rolled piece and based on a Fourier heat transfer two-dimensional differential evolution algorithm, the temperature evolution condition of the rolled piece in the stepping process of the cooling bed is simulated, so that suitable working parameters of the cooling bed are formulated.
Drawings
FIG. 1 is a diagram of a typical cold bed process layout for hot rolling bars.
Fig. 2 system off-line mode principle.
The online mode principle of the system of fig. 3.
The reference numbers in the schematic drawings illustrate: 1. multiple length flying shears; 2. accelerating the roller way; 3. a cold bed input roller way; 4. braking the apron board; 5. a cooling bed rack; 6. aligning the roller way; 7. a chain type transfer machine; 8. a steel moving trolley; 9. and (4) a cold bed output roller way.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The system has two modes of a separation line and an on-line mode, wherein the off-line mode is mainly used for designing size parameters when a cooling bed is designed, and the on-line mode is used for material tracking and product quality tracing during actual production. The following two modes of embodiments are described separately:
an off-line mode: selecting the designed steel type, multiple length, product specification and the like, inputting geometric parameters (such as the length of an acceleration roller way, the length of a cold bed input roller way, a braking distance, a stepping pitch, the size of a chain type transfer machine, the size of a steel transfer trolley and the like), inputting process parameters (such as the tail end speed of the acceleration roller way, the temperature of an upper cold bed, a stepping period, the temperature of a lower cold bed, the running period of the chain type transfer machine, the same shearing quantity of a fixed length machine and the like), calculating physical parameters (such as the average acceleration of the acceleration roller way, the average acceleration during braking, the running speed of a rolled piece at different positions and the like) required by material tracking according to the geometric parameters, calculating the theoretical temperature of the rolled piece at the lower cold bed by adopting a Fourier heat transfer two-dimensional difference algorithm (comprehensively considering heat conduction, heat convection and heat radiation) and judging the theoretical temperature, and calculating the main size parameters of the cold bed by a program if the temperature of the lower cold bed does not meet the process requirement, and repeating the above process for testing until the temperature requirement of the lower cooling bed is met, and finally obtaining the proper design parameters of the cooling bed.
And (3) online mode: production planning data (such as steel types, product specifications, multiple length, the number of shear of a sizing machine and the like) are obtained by butting MES, programming size parameters (such as length of an acceleration roller way, length of a cooling bed input roller way, braking distance, stepping pitch, size of a chain type transfer machine, size of a steel transfer trolley and the like) are programmed, and first-stage production data are acquired in real time (such as temperature of an upper cooling bed, a skirtboard lifting detection signal, a stepping period, a temperature signal of a specific position of the cooling bed, a steel existence/nonexistence signal of a tooth socket end, a red detection result and the like). And then, calculating physical parameters (such as average acceleration of an acceleration roller way, average acceleration during braking, running speeds of the rolled piece at different positions and the like) of the running of the rolled piece based on the data, and calculating real-time temperatures of the rolled piece at different positions by adopting a Fourier heat transfer two-dimensional difference algorithm (comprehensively considering heat conduction, heat convection and heat radiation). When the temperature of the rolled piece under the cooling bed does not meet the requirement, the system prompts a parameter adjustment suggestion of the cooling bed, and after the suggestion is confirmed by an operator, primary execution is issued. When unqualified products are detected in red, material tracking historical data are searched in time according to sample numbers, corresponding steel billet numbers and corresponding rolling process parameters are found, the reasons of abnormity are analyzed, parameter adjustment suggestions are prompted and given to a main rolling line area, and after manual confirmation, primary execution is issued, so that subsequent product quality is guaranteed.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (3)
1. A hot-rolled bar cooling bed material tracking and product quality tracing method is characterized by at least comprising the following steps:
acquiring parameters related to the material of the cooling bed;
calculating the real-time position of the rolled piece and the temperature of the rolled piece by using the acquired parameters;
when the mode is an off-line mode, the temperature of the rolled piece is measured and calculated when the rolled piece is put on a cooling bed by using the calculated real-time position of the rolled piece and the temperature of the rolled piece;
if the measured lower cooling bed temperature is higher than the preset value, the cooling bed parameters are reversely calculated until the proper parameters meeting the lower cooling bed temperature requirement are obtained;
and outputting the calculated proper parameters to corresponding equipment;
when the mode is an online mode, real-time tracking of rolled piece materials and real-time display of temperature states are achieved by means of the calculated real-time positions of the rolled pieces and the temperatures of the rolled pieces; when unqualified products appear in the red inspection, historical data are inquired according to sampling time, corresponding rolled piece numbers and billet numbers are quickly found, current rolling process parameters are inquired reversely, the parameters are analyzed, and adjustment reasons and suggestions are pushed to a main rolling line area in real time according to expert experience.
2. A hot rolled bar cold bed material tracking and product quality tracing method as claimed in claim 1 wherein for off-line mode, said cold bed material related parameters include:
freely setting the speed of a rolled piece after multi-length shearing, the length of an acceleration roller way after multi-length shearing, the acceleration of the rolled piece on the acceleration roller way, the length and the acceleration of a cold bed input roller way, the temperature of the cold bed on the rolled piece, the length and the acceleration of a friction brake plate, the stepping pitch of the cold bed, the stepping period, the movement period of an alignment roller way, the size and the running speed of a chain type transfer machine, the size and the action time consumption of a steel moving trolley and the same shearing number of the cold shearing machine;
for the on-line mode, the material-related parameters of the cooling bed include: the length of the built-in multiple-length shear rear acceleration roller way, the length of the cold bed input roller way, the length of a friction braking plate, the cold bed stepping pitch, the size of a chain type transfer machine and the size of a steel moving trolley are combined.
3. The hot-rolled bar cooling bed material tracking and product quality tracing method according to claim 1, characterized in that the system calculates the real-time position of the rolled piece and the temperature of the rolled piece according to the acquired cooling bed and material related parameters, combined with the designed steel type, multiple length and product specification, based on a Fourier heat transfer two-dimensional difference algorithm, and comprehensively considering heat conduction, heat convection and heat radiation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210756027.8A CN114951297A (en) | 2022-06-29 | 2022-06-29 | Hot-rolled bar cooling bed material tracking and product quality tracing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210756027.8A CN114951297A (en) | 2022-06-29 | 2022-06-29 | Hot-rolled bar cooling bed material tracking and product quality tracing method |
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| Publication Number | Publication Date |
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| CN114951297A true CN114951297A (en) | 2022-08-30 |
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| CN202210756027.8A Pending CN114951297A (en) | 2022-06-29 | 2022-06-29 | Hot-rolled bar cooling bed material tracking and product quality tracing method |
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- 2022-06-29 CN CN202210756027.8A patent/CN114951297A/en active Pending
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