CN114965935A - Strip steel quality judgment method and system based on customer requirements - Google Patents
Strip steel quality judgment method and system based on customer requirements Download PDFInfo
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G01N2021/8874—Taking dimensions of defect into account
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Abstract
The invention discloses a strip steel quality judgment method based on customer requirements, which comprises the following steps: s1, judging the product of the current strip steel and the corresponding product grade, wherein the product comprises: cold rolling base material, acid washing base material and hot rolling product; s2, acquiring the defect types of the current strip steel and the corresponding defect grades; s3, detecting whether the defect type of the strip steel and the corresponding defect grade are in the allowable range of the product grade of the corresponding product, if so, determining that the surface quality of the current strip steel is qualified, otherwise, determining that the surface quality of the current strip steel is unqualified. The plate belt surface quality is automatically detected in a grading manner based on the customer demands, so that the difference of manual judgment can be effectively reduced, the judgment standard is more consistent and standardized, and the judgment accuracy and the judgment efficiency of the surface defects are favorably improved.
Description
Technical Field
The invention belongs to the technical field of surface quality judgment, and particularly relates to a strip steel quality judgment method and system based on customer requirements.
Background
The existing strip steel surface quality judgment is to acquire a defect image of the strip steel surface through a meter inspection instrument, acquire the number of defects, the defect type, the defect length and the defect area in a roll unit, and judge the defect number, the defect length and the defect area corresponding to the defect grade based on a set judgment rule, but the judgment method cannot be applied to orders or the personalized requirements of users.
Disclosure of Invention
The invention provides a strip steel quality judgment method based on customer requirements, and aims to solve the problems.
The invention is realized in such a way, and provides a strip steel quality judgment method based on customer requirements, which comprises the following steps:
s1, judging the product of the current strip steel and the corresponding product grade, wherein the product comprises: cold rolling base material, acid washing base material and hot rolling product;
s2, acquiring the defect types of the current strip steel and the corresponding defect grades;
s3, detecting whether the defect type of the strip steel and the corresponding defect grade are in the allowable range of the product grade of the corresponding product, if so, determining that the surface quality of the current strip steel is qualified, otherwise, determining that the surface quality of the current strip steel is unqualified.
Further, the method for judging the product of the current strip steel and the corresponding product grade is as follows:
s11, detecting whether the current strip steel mark is a cold-rolled base material mark, if so, executing a step S12, and if not, executing a step S13;
s12, judging that the current strip steel is a cold-rolled base material, determining the grade of the cold-rolled base material based on the surface grade of a target finished product, and sending the current strip steel to a unit corresponding to the next process, wherein the next process is galvanizing, continuous annealing, cover annealing or color coating;
s13, detecting whether the current strip steel mark is an acid pickling base material mark or not, if so, judging that the current strip steel is the acid pickling base material, determining the grade of the acid pickling base material based on the surface grade of the target finished product, if not, determining the current strip steel hot rolling product, and determining the hot rolling product to which the current strip steel belongs based on the target purpose.
Further, the target finished product surface level is a set value, and is set based on the requirements of customers.
Further, the method for determining the defect grade of the strip steel comprises the following steps:
counting the number of defects with the defect length exceeding a length threshold or the defect area larger than an area threshold;
the defect grade corresponding to the numerical value interval where the defect quantity is located is the defect grade of the corresponding type of defect, and the defect grade is higher when the defect quantity is larger.
Further, before step S3, the method further includes the following steps:
defining the product grade of each product, and determining the allowable highest defect grade of each product grade for each type of defect on the upper surface and the lower surface.
Further, the method for judging whether the current defect type of the strip steel and the defect grade corresponding to the defect type are in the products corresponding to the products or not is specifically as follows:
counting the defect types and the corresponding defect grades of the upper surface of the strip steel, and detecting whether the defect grades are smaller than the allowable highest defect grade of the corresponding defects on the upper surface;
counting the defect types and the corresponding defect grades of the lower surface of the strip steel, and detecting whether the defect grades are smaller than the allowable highest defect grade of the corresponding defects on the lower surface;
if the detection results are yes, whether the defect type of the strip steel and the corresponding defect grade are within the allowable range of the product grade of the corresponding product or not is judged.
The invention is realized in this way, a strip steel quality judging system based on customer's demand, the said system includes:
a meter detector, a data acquisition platform and a production and marketing integrated system,
recording the surface grades of the strip steel products and the target finished products required by the customers from the production and marketing integrated system, and reading the surface grades of the strip steel products and the target finished products required by the customers from the production and marketing integrated system by the data acquisition platform;
the meter detector is used for detecting the surface defect data of the current strip steel, judging the defect type and the corresponding defect grade of the strip steel and uploading the defect type and the corresponding defect grade to the data acquisition platform;
and the data acquisition platform judges the product and the product grade of the current strip steel, detects whether the defect type of the current strip steel and the corresponding defect grade are in the allowable range of the product grade of the corresponding product, if so, determines that the surface quality of the current strip steel is qualified, otherwise, determines that the surface quality of the current strip steel is unqualified.
Further, the product grade of the product to which the current strip steel belongs is determined based on the target finished product surface grade.
Further, the method for judging the product to which the current strip steel belongs specifically comprises the following steps:
s11, detecting whether the current strip steel identification is a cold-rolled base material identification, if so, executing a step S12, and if not, executing a step S13;
s12, judging that the current strip steel is a cold-rolled base material, and sending the current strip steel to a unit corresponding to the next process, wherein the next process is galvanizing, continuous annealing, cover annealing or color coating;
s13, detecting whether the current strip steel mark is an acid pickling base material mark, if so, judging that the current strip steel is the acid pickling base material, and if not, determining that the current strip steel hot rolling product.
The plate belt surface quality is automatically detected in a grading manner based on the customer demands, so that the difference of manual judgment can be effectively reduced, the judgment standard is more consistent and standardized, and the judgment accuracy and the judgment efficiency of the surface defects are favorably improved.
Drawings
Fig. 1 is a flowchart of a method for determining strip steel quality based on customer requirements according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.
Fig. 1 is a flowchart of a method for determining strip steel quality based on customer requirements according to an embodiment of the present invention, where the method specifically includes the following steps:
s1, judging the product of the current strip steel and the corresponding product grade, wherein the product comprises: cold rolling base material, acid washing base material and hot rolling product;
in the embodiment of the invention, the method for judging the product of the current strip steel and the corresponding product grade is as follows:
s11, detecting whether the current strip steel mark is a cold-rolled base material mark, if so, executing a step S12, and if not, executing a step S13;
s12, judging that the current strip steel is a cold-rolled base material, determining the grade of the cold-rolled base material based on the surface grade of a target finished product, and sending the current strip steel to a unit corresponding to the next process, wherein the next process is galvanizing, continuous annealing, cover annealing or color coating;
s13, detecting whether the current strip steel mark is an acid pickling base material mark or not, if so, judging that the current strip steel is the acid pickling base material, determining the grade of the acid pickling base material based on the surface grade of the target finished product, if not, determining the current strip steel hot rolling product, and determining the hot rolling product to which the current strip steel belongs based on the target purpose.
TABLE 1 product grade corresponding to finished product surface grade
04-car inner plate, 05-car outer plate, 06-car structural plate, 23-for car structure, 19, for car beam, 25-for steel for car wheel, 65-for cold forming high-strength structural member; 3-common household appliance plate/door panel, 10-structure, 14-EI iron core, 15-air conditioner compressor, 16-refrigerator compressor, 17-household motor, 18-medium and small motor, 46-raw material for cold-rolled product, 48-bundling belt, 50-household appliance, 69-motor for automobile driving, 09-pipeline, 01-building, 02-household appliance panel, 07-common structure plate, 112-outsourcing processing, 113-household appliance plate for forming, 103-cold-rolling base, 12-HSLA, 20-common structure steel, 36-special, 43-sofa, 45-hot-rolling pickling plate, 47-user flat direct use, 58-coating base material use and 107-tube making.
S2, acquiring the defect types of the current strip steel and the corresponding defect grades;
detecting the surface defects of the strip steel by a meter detector, acquiring defect types, defect quantity, defect length, defect positions and defect areas, and counting the number of the defects of which the defect length exceeds a length threshold value or the defect area is larger than an area threshold value in a specified area; the defect grade corresponding to the numerical value interval where the defect quantity is located is the defect grade of the corresponding type of defect, and the defect grade is higher when the defect quantity is larger.
The present invention is illustrated by taking "oxygen compression" defects as an example, as shown in Table 2, wherein S0-S4 are defect grades, and higher defect grades indicate more serious defects of this type.
TABLE 2 determination of defect grade of oxygen compression defect
S3, detecting whether the current defect type and the corresponding defect grade of the strip steel are within the allowable range of the product grade of the corresponding product, if so, determining that the surface quality of the current strip steel is qualified, otherwise, determining that the surface quality of the current strip steel is unqualified.
Defining the product grade of each product, and determining the allowable highest defect grade of each product grade for each type of defect on the upper surface and the lower surface.
Counting the defect types and the corresponding defect grades of the upper surface of the strip steel, and detecting whether the defect grades are smaller than the allowable highest defect grade of the corresponding defects on the upper surface;
counting the defect types and the corresponding defect grades of the lower surface of the strip steel, and detecting whether the defect grades are smaller than the allowable highest defect grade of the corresponding defects on the lower surface;
if the detection results are yes, whether the defect type of the strip steel and the corresponding defect grade are within the allowable range of the product grade of the corresponding product or not is judged.
Generally, the quality requirement of the upper surface of the strip steel is stricter than that of the lower surface of the strip steel, and the quality of the surface of the strip steel is judged to be qualified only if the upper surface and the lower surface of the strip steel meet the corresponding quality requirements.
The FA-FD is used for representing the product grade, the FD is the highest product grade, the higher the product grade is, the stricter the quality requirement is, and the requirements of the oxygen pressure defect (namely the oxygen pressure component sorting degree) on the product grade are only explained, and the following table is shown:
TABLE 3 Defect grade requirement of product grade to oxygen defect
For FA product grade, the allowable highest defect grade of the upper surface oxygen compression defect is S2, and the allowable highest defect grade of the lower surface oxygen compression defect is S3.
In addition, the invention also provides a strip steel quality judgment system based on customer requirements, which comprises:
the meter detection instrument, the data acquisition platform and the production and marketing integrated system;
inputting the strip steel product, the target finished product surface grade and the product application required by a customer from the production and marketing integrated system, and reading the strip steel product, the target finished product surface grade and the product application required by the customer from the production and marketing integrated system by the data acquisition platform;
the meter detector is used for detecting the surface defect data of the current strip steel, judging the defect type and the corresponding defect grade of the strip steel and uploading the defect type and the corresponding defect grade to the data acquisition platform;
the data acquisition platform judges the product to which the current strip steel belongs and the product grade of the current strip steel, detects whether the defect type of the current strip steel and the corresponding defect grade of the current strip steel are in the allowable range of the product grade of the corresponding product, if the detection result is positive, the surface quality of the current strip steel is determined to be qualified, otherwise, the surface quality of the current strip steel is determined to be unqualified;
the method for judging the product of the current strip steel specifically comprises the following steps:
s11, detecting whether the current strip steel mark is a cold-rolled base material mark, if so, executing a step S12, and if not, executing a step S13;
s12, judging that the current strip steel is a cold-rolled base material, and sending the current strip steel to a unit corresponding to the next process, wherein the next process is galvanizing, continuous annealing, cover annealing or color coating;
s13, detecting whether the current strip steel mark is an acid pickling base material mark or not, if so, judging that the current strip steel is the acid pickling base material, and if not, determining the current strip steel hot rolling product;
and determining the product grade of the product to which the current steel strip belongs based on the target finished product surface grade.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (9)
1. A strip steel quality judgment method based on customer requirements is characterized by comprising the following steps:
s1, judging the product of the current strip steel and the corresponding product grade, wherein the product comprises: cold rolling base material, acid washing base material and hot rolling product;
s2, acquiring the defect types of the current strip steel and the corresponding defect grades;
s3, detecting whether the defect type of the strip steel and the corresponding defect grade are in the allowable range of the product grade of the corresponding product, if so, determining that the surface quality of the current strip steel is qualified, otherwise, determining that the surface quality of the current strip steel is unqualified.
2. The method for determining strip steel quality based on customer needs of claim 1, wherein the determination method of the product to which the current strip steel belongs and the corresponding product grade is as follows:
s11, detecting whether the current strip steel mark is a cold-rolled base material mark, if so, executing a step S12, and if not, executing a step S13;
s12, judging that the current strip steel is a cold-rolled base material, determining the grade of the cold-rolled base material based on the surface grade of a target finished product, and sending the current strip steel to a unit corresponding to the next process, wherein the next process is galvanizing, continuous annealing, cover annealing or color coating;
s13, detecting whether the current strip steel mark is an acid pickling base material mark or not, if so, judging that the current strip steel is the acid pickling base material, determining the grade of the acid pickling base material based on the surface grade of the target finished product, if not, determining the current strip steel hot rolling product, and determining the hot rolling product to which the current strip steel belongs based on the target purpose.
3. The method of claim 1, wherein the target finished product surface level is a set value set based on a customer's request.
4. The method for determining strip steel quality based on customer requirements as claimed in claim 1, wherein the method for determining the defect grade of the strip steel is as follows:
counting the number of defects with the defect length exceeding a length threshold or the defect area larger than an area threshold;
the defect grade corresponding to the numerical value interval where the defect quantity is located is the defect grade of the corresponding type of defect, and the defect grade is higher when the defect quantity is larger.
5. The method for determining strip quality based on customer demand according to claim 1, further comprising the steps of, before step S3:
defining the product grade of each product, and determining the allowable highest defect grade of each product grade for each type of defect on the upper surface and the lower surface.
6. The method for judging the quality of the strip steel based on the customer requirement as claimed in claim 5, wherein the judgment method within the allowable range includes the following steps:
counting the defect types and the corresponding defect grades of the upper surface of the strip steel, and detecting whether the defect grades are smaller than the allowable highest defect grade of the corresponding defects on the upper surface;
counting the defect types and the corresponding defect grades of the lower surface of the strip steel, and detecting whether the defect grades are smaller than the allowable highest defect grade of the corresponding defects on the lower surface;
if the detection results are yes, whether the current defect type of the strip steel and the corresponding defect grade of the strip steel are within the allowable range of the product grade of the corresponding product is judged.
7. A system for determining strip steel quality based on customer demand, the system comprising:
a meter detector, a data acquisition platform and a production and marketing integrated system,
inputting the strip steel product, the target finished product surface grade and the product application required by a customer from the production and marketing integrated system, and reading the strip steel product, the target finished product surface grade and the product application required by the customer from the production and marketing integrated system by the data acquisition platform;
the meter detector is used for detecting the surface defect data of the current strip steel, judging the defect type and the corresponding defect grade of the strip steel and uploading the defect type and the corresponding defect grade to the data acquisition platform;
and the data acquisition platform judges the product to which the current strip steel belongs and the product grade of the current strip steel, detects whether the defect type of the current strip steel and the corresponding defect grade of the current strip steel are in the allowable range of the product grade of the corresponding product, if so, the surface quality of the current strip steel is determined to be qualified, otherwise, the surface quality of the current strip steel is determined to be unqualified.
8. The system for determining strip quality based on customer demand of claim 7, wherein the product grade of the product to which the current strip belongs is determined based on the target finished product surface grade.
9. The system for determining strip steel quality based on customer demand according to claim 7, wherein the method for determining the product to which the current strip steel belongs is as follows:
s11, detecting whether the current strip steel mark is a cold-rolled base material mark, if so, executing a step S12, and if not, executing a step S13;
s12, judging that the current strip steel is a cold-rolled base material, and sending the current strip steel to a unit corresponding to the next process, wherein the next process is galvanizing, continuous annealing, cover annealing or color coating;
s13, detecting whether the current strip steel mark is an acid pickling base material mark, if so, judging that the current strip steel is the acid pickling base material, and if not, determining that the current strip steel hot rolling product.
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Cited By (1)
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| CN115931905A (en) * | 2023-02-02 | 2023-04-07 | 北京百度网讯科技有限公司 | POY product detection method and device, electronic equipment and storage medium |
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