CN116817806A - Device and method for judging thickness and quality of hot-rolled aluminum plate strip - Google Patents
Device and method for judging thickness and quality of hot-rolled aluminum plate strip Download PDFInfo
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- CN116817806A CN116817806A CN202310828064.XA CN202310828064A CN116817806A CN 116817806 A CN116817806 A CN 116817806A CN 202310828064 A CN202310828064 A CN 202310828064A CN 116817806 A CN116817806 A CN 116817806A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 31
- 238000005098 hot rolling Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 45
- 239000000523 sample Substances 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/02—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Control Of Metal Rolling (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The application relates to a device and a method for judging thickness and quality of a hot rolled aluminum plate strip. The thickness gauge is arranged in the hot rolling outlet area and used for detecting the thickness of a finished product at a strip outlet in hot rolling production in real time, the controller is used for receiving the thickness data of the strip detected by the thickness gauge, and the data acquisition device is used for acquiring and storing the thickness change data of each finished coiled material received by the controller in the production process. The thickness information of each roll of products stored in the data acquisition server can be accessed by production personnel through an upper computer.
Description
Technical Field
The application relates to the technical field of thickness quality detection of hot-rolled aluminum plate strips, in particular to a device and a method for judging thickness quality of hot-rolled aluminum plate strips.
Background
For hot rolled coils, the deviation of the actual thickness of the coil from the target thickness is an important basis for evaluating the quality of the product. If the thickness difference of the hot rolled coil fluctuates greatly, serious consequences such as unqualified quality, broken belt in the production process of the product and the like can be caused in the subsequent process when the product is further processed, and the quality, the production cost and the running stability of equipment are all affected. Therefore, it is particularly critical for hot rolling quality detection personnel to accurately judge the thickness difference quality of the product. The traditional standard for quality inspection personnel to judge the quality of the product thickness difference is that the thickness difference exceeding point number of the product is within a certain range, the product thickness difference is judged to be qualified, but when the thickness difference quality is judged by the standard, if the thickness difference of part of the products has single-point serious exceeding condition, or when the thickness difference is in severe oscillation type, the thickness difference quality of the products is poor for the later process although the thickness difference exceeding point number standard is met, namely the actual thickness difference condition of the products cannot be accurately reflected by the current thickness difference judging standard. In addition, the old calculation mode of the thickness difference exceeding standard point is greatly influenced by the length of the strip. For strips with shorter lengths, the thickness difference exceeding point in the production process is necessarily less than that of strips with longer lengths, so that for strips with different lengths, the thickness difference exceeding point mode is used for judging the thickness difference quality of the strips, and the thickness difference quality cannot be unified.
Disclosure of Invention
Accordingly, the application aims to provide a device and a method for judging thickness quality of a hot rolled aluminum plate strip, which can accurately judge thickness deviation quality of a product of an aluminum hot rolled coil.
In order to achieve the above purpose, the application adopts the following technical scheme: a hot rolled aluminum plate strip thickness quality judging device comprises an aluminum plate strip thickness gauge, a controller, a data acquisition unit and an upper computer; the controller is connected with the aluminum plate and strip thickness gauge, the data acquisition device and the upper computer; the aluminum plate strip thickness gauge is arranged in the hot rolling outlet area and used for detecting the thickness of a finished product of a strip outlet in hot rolling production in real time, the controller is used for receiving the thickness data of the strip detected by the aluminum plate strip thickness gauge, and the data acquisition device is used for acquiring and storing the thickness change data of each finished coiled material received by the controller in the production process; the thickness information of each roll of products stored in the data acquisition server is accessed by the production personnel through the upper computer.
In a preferred embodiment, the aluminum plate strip thickness gauge comprises a high-voltage ray source generator positioned above the outlet roller way and a ray source receiving probe positioned below the roller way, the ray is emitted by the upper high-voltage ray source generator and then is received by the lower ray source receiving probe through the aluminum strip in the roller way, the aluminum plate strip thickness gauge receives the probe signal and analyzes the attenuation rate of the ray to calculate the actual thickness of the current strip, and the measuring period of the thickness gauge is 4 milliseconds; the ten thousands of sampling points with the period of 4 milliseconds which are reserved in the strip production process form a complete thickness difference curve, and the measurement data are stored in a data collector.
The application also provides a thickness quality judging method of the hot-rolled aluminum plate strip, which adopts the thickness quality judging device of the hot-rolled aluminum plate strip and comprises the following steps:
step 1: detecting that the strip is located at a finish rolling inlet and is about to start production, and clearing the total number of sampling points stored before, the number of sampling points exceeding an allowable range;
step 2: judging the alloy of the strip produced at present, and setting different allowable upper and lower limits delta Hmax and delta Hmin for different alloy products;
step 3: when the production length of the strip exceeds 100 meters and enters a stable production stage, starting to collect the current sampling point thickness difference delta H and calculating the total number of sampling points, and counting 1 when the delta H is delta Hmax or delta H < [ delta ] Hmin and the number of the over-limit sampling points; setting a plurality of ranges such as delta Hmax1, delta Hmin1 or delta Hmax2 and delta Hmin2, and calculating the number of overrun sampling points under different limit values;
step 4: stopping collecting the total number of sampling points and the number of overrun sampling points when the strip is produced to 100 meters at the tail end, and dividing the number of overrun sampling points by the total number of sampling points to obtain the percentage of qualified sampling points; finally, calculating the standard deviation of the integral thickness difference curve; comparing the percentage and standard deviation of the qualified sampling points with the set qualified standard to quickly and accurately judge whether the thickness deviation quality of the strip is qualified or not;
and 5, storing the data in a data memory, and enabling quality detection personnel to access the data stored in the data memory through an upper computer to check the thickness difference quality condition of the strip.
Compared with the prior art, the application has the following beneficial effects: the thickness deviation quality condition of the aluminum hot rolled coil product can be accurately judged.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of the present application;
FIG. 2 is a schematic diagram of a specific application example of a preferred embodiment of the present application, specifically, an upper computer display diagram of a thickness deviation quality judging method of R3528324;
fig. 3 is a schematic diagram of a specific application example of the preferred embodiment of the present application, specifically, an upper computer display diagram of a thickness deviation quality judging method of R3620211.
Detailed Description
The application will be further described with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application; as used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The application relates to a device and a method for judging thickness and quality of a hot rolled aluminum plate strip, and referring to FIG. 1, the device comprises an aluminum plate strip thickness gauge 1, a controller 2, a data collector 3 and an upper computer 4. The thickness gauge is arranged in a hot rolling outlet area and used for detecting the thickness of a finished product of a strip outlet in hot rolling production in real time, the controller 2 is used for receiving the thickness data of the strip detected by the thickness gauge, and the data collector 3 is used for collecting and storing the thickness change data of each finished coiled material received by the controller in the production process. The thickness information of each roll of the product stored in the data acquisition server can be accessed by the producer through the upper computer 4.
In the application, the thickness gauge 1 consists of a high-voltage ray source generator positioned above an outlet roller way and a ray source receiving probe positioned below the roller way, rays are emitted by the upper ray source generator and then are received by the lower ray receiving probe through an aluminum strip in the roller way, the thickness gauge 1 receives a probe signal and analyzes the decay rate of the rays to calculate the actual thickness of the current strip, and the measuring period of the thickness gauge 1 is 4 milliseconds. The ten thousands of sampling points with a period of 4 milliseconds which are reserved in the whole strip production process form a complete thickness difference curve, and the measurement data are stored in the data collector 3.
The application relates to a thickness quality judging method of a hot-rolled aluminum plate strip, which comprises the following steps: analyzing the thickness condition of each coil of finished strip stored in the data acquisition server 3, comparing the actual thickness deviation of the strip measured by the thickness gauge 1 with a set standard thickness deviation allowable value to judge whether the thickness measured at any time in the production process is within an allowable range or not, and if the measured thickness deviation exceeds the allowable range, then a quality detector can judge that the thickness of the aluminum strip produced at the moment exceeds the standard and the quality of the product is unqualified. And the modification is needed to ensure that the product quality meets the subsequent use requirement.
In the application, the standard algorithm for judging the thickness difference quality of the strip is as follows: firstly, the thickness difference curve of the head and the tail of the strip material in the production process is severely fluctuated, and the thickness difference curve recorded by the data acquisition device 3 in the production process of the aluminum coil is cut off by 100 meters at the head and the tail for the purpose of data accuracy (the head and the tail have great fluctuation of the strip material tension and the measured thickness difference data fluctuation is severely non-referential at the moment in the process of strip material production). And then comparing each sampling point with the upper limit and the lower limit of the allowable thickness difference for the thickness difference curve after cutting, and counting for 1 time if the thickness difference sampling point acquired at the current moment exceeds the upper limit and the lower limit of the allowable thickness difference. And finally dividing the number of the thickness difference overrun sampling points in the current strip production process by the total number of the sampling points to obtain the thickness difference qualified point percentage. By setting a plurality of upper and lower limits, the percentages of a plurality of different thickness difference standards can be obtained. And finally, calculating standard deviation of the thickness difference curve after head and tail cutting, and judging the integral fluctuation condition of the thickness difference. The thickness difference condition of the strip can be accurately judged by combining the qualification percentage of the thickness difference sampling points and the standard deviation of the thickness difference curve.
The algorithm and control manner of the controller 2 are as follows:
step 1: detecting that the strip is located at the finish rolling inlet and is about to start production, and clearing the total number of sampling points stored before, the number of sampling points exceeding the allowable range.
Step 2: judging the alloy of the strip produced at present, and setting different allowable upper and lower limits delta Hmax and delta Hmin for different alloy products;
step 3: when the strip production length exceeds 100 meters and enters a stable production stage, the current sampling point thickness difference delta H is started to be collected, the total number of sampling points is calculated, and when delta H > deltaHmax (or delta H < [ delta ] Hmin), the number of the overrun sampling points is counted by 1. A plurality of ranges such as Δhmax1, Δhmin1 or Δhmax2, Δhmin2 may be set, and the number of overrun sampling points at different limits is calculated.
Step 4: and when the strip is produced to the final tail 100 meters, stopping collecting the total number of sampling points and the number of overrun sampling points, and dividing the number of overrun sampling points by the total number of sampling points to obtain the percent of qualified sampling points. And finally, calculating the standard deviation of the integral thickness difference curve. And comparing the percentage and standard deviation of the qualified sampling points with the set qualified standard to quickly and accurately judge whether the thickness deviation quality of the strip is qualified.
And 5, storing the data in a data memory, and enabling quality detection personnel to access the data stored in the data memory through an upper computer to check the thickness difference quality condition of the strip.
Fig. 2-3 are schematic diagrams of specific application examples of the present application. Wherein, R3528324 is a normal coil with thickness deviation quality, and R3620211 is an abnormal coil with thickness deviation quality. Fig. 2 is a view showing an upper computer of the thickness deviation quality determination method of R3528324, and fig. 3 is a view showing an upper computer of the thickness deviation quality determination method of R3620211. Table 1 shows an example of the method for judging the deviation quality of the thickness of the strip.
TABLE 1 example method for determining the quality of a deviation in thickness of a strip
| Sequence number | Ingot number | Alloy | Strip gauge | Upper and lower limits of thickness difference | Standard deviation of thickness difference curve (greater than 7 disqualification) | Qualified sampling point duty cycle (less than 97% disqualification) | Determination result |
| 1 | R3528324 | 3104 | Width 1803mm x thickness 2.0mm | ±15μm | 6.0763 | 98.195% | Qualified product |
| 2 | R3620211 | 3104 | 1797mm wide by 2.1mm thick | ±15μm | 7.0076 | 96.807% | Failure to pass |
Claims (3)
1. The device for judging the thickness and the quality of the hot rolled aluminum plate strip is characterized by comprising an aluminum plate strip thickness gauge, a controller, a data acquisition device and an upper computer; the controller is connected with the aluminum plate and strip thickness gauge, the data acquisition device and the upper computer; the aluminum plate strip thickness gauge is arranged in the hot rolling outlet area and used for detecting the thickness of a finished product of a strip outlet in hot rolling production in real time, the controller is used for receiving the thickness data of the strip detected by the aluminum plate strip thickness gauge, and the data acquisition device is used for acquiring and storing the thickness change data of each finished coiled material received by the controller in the production process; the thickness information of each roll of products stored in the data acquisition server is accessed by the production personnel through the upper computer.
2. The device for judging the thickness quality of the hot rolled aluminum plate strip according to claim 1, wherein the aluminum plate strip thickness gauge comprises a high-voltage ray source generator positioned above an outlet roller way and a ray source receiving probe positioned below the roller way, rays are emitted by the upper high-voltage ray source generator and then are received by the lower ray source receiving probe through the aluminum strip in the roller way, the aluminum plate strip thickness gauge receives probe signals and analyzes the attenuation rate of the rays to calculate the actual thickness of the current strip, and the measuring period of the thickness gauge is 4 milliseconds; the ten thousands of sampling points with the period of 4 milliseconds which are reserved in the strip production process form a complete thickness difference curve, and the measurement data are stored in a data collector.
3. The method for judging the thickness quality of the hot-rolled aluminum plate strip is characterized by comprising the following steps of:
step 1: detecting that the strip is located at a finish rolling inlet and is about to start production, and clearing the total number of sampling points stored before, the number of sampling points exceeding an allowable range;
step 2: judging the alloy of the strip produced at present, and setting different allowable upper and lower limits delta Hmax and delta Hmin for different alloy products;
step 3: when the production length of the strip exceeds 100 meters and enters a stable production stage, starting to collect the current sampling point thickness difference delta H and calculating the total number of sampling points, and counting 1 when the delta H is delta Hmax or delta H < [ delta ] Hmin and the number of the over-limit sampling points; setting a plurality of ranges such as delta Hmax1, delta Hmin1 or delta Hmax2 and delta Hmin2, and calculating the number of overrun sampling points under different limit values;
step 4: stopping collecting the total number of sampling points and the number of overrun sampling points when the strip is produced to 100 meters at the tail end, and dividing the number of overrun sampling points by the total number of sampling points to obtain the percentage of qualified sampling points; finally, calculating the standard deviation of the integral thickness difference curve; comparing the percentage and standard deviation of the qualified sampling points with the set qualified standard to quickly and accurately judge whether the thickness deviation quality of the strip is qualified or not;
and 5, storing the data in a data memory, and enabling quality detection personnel to access the data stored in the data memory through an upper computer to check the thickness difference quality condition of the strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310828064.XA CN116817806A (en) | 2023-07-07 | 2023-07-07 | Device and method for judging thickness and quality of hot-rolled aluminum plate strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310828064.XA CN116817806A (en) | 2023-07-07 | 2023-07-07 | Device and method for judging thickness and quality of hot-rolled aluminum plate strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116817806A true CN116817806A (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310828064.XA Pending CN116817806A (en) | 2023-07-07 | 2023-07-07 | Device and method for judging thickness and quality of hot-rolled aluminum plate strip |
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| Country | Link |
|---|---|
| CN (1) | CN116817806A (en) |
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2023
- 2023-07-07 CN CN202310828064.XA patent/CN116817806A/en active Pending
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