CN118293836A - Method for measuring and compensating thickness of aluminum-zinc plated plate - Google Patents
Method for measuring and compensating thickness of aluminum-zinc plated plate Download PDFInfo
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- CN118293836A CN118293836A CN202410344530.1A CN202410344530A CN118293836A CN 118293836 A CN118293836 A CN 118293836A CN 202410344530 A CN202410344530 A CN 202410344530A CN 118293836 A CN118293836 A CN 118293836A
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- aluminum
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- zinc
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- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007747 plating Methods 0.000 claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 239000011701 zinc Substances 0.000 claims description 13
- 229910052725 zinc Inorganic materials 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 7
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000012797 qualification Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The invention relates to a method for measuring and compensating the thickness of an aluminum-zinc plated plate, which comprises the following steps of S1, obtaining an expression for measuring the thickness of a material to be measured according to a thickness meter measuring principle; s2, obtaining an expression for measuring the total thickness of the aluminum-zinc plated plate by using a thickness gauge according to the expression in the step S1; s3, obtaining an actual thickness expression of the aluminum-zinc plated plate; s4, measuring the aluminum-zinc plated plate by using a thickness gauge, and compensating the plating type according to aluminum to obtain a compensated thickness expression; and S5, when the plating layer type is compensated according to aluminum, multiplying the plating layer thickness which is transmitted to the thickness gauge at first level by a compensation coefficient, so that the actual thickness expression of the aluminum-zinc plated plate is equal to the compensated thickness expression, and the measured thickness of the thickness gauge can be compensated to the actual thickness. The invention can compensate the thickness measurement of the aluminum-zinc plated plate, thereby achieving the purposes of eliminating measurement errors and improving the product quality.
Description
Technical Field
The invention relates to the technical field of galvanization, in particular to a thickness measurement compensation method for an aluminized zinc plate.
Background
In the process of producing an aluminized zinc plate by a cold rolling No.1 galvanization line, the accuracy of the measured value of an outlet finished product thickness gauge is poor, the deviation between the measured value and the actual thickness is more than 20 mu m, and a large number of products are sealed, so that a large amount of economic loss is caused.
According to analysis, the outlet thickness gauge of the No. 1 galvanized wire is a single material thickness gauge, and the thickness of the plating layer needs to be corrected because the plating layer and the substrate are different in material and different in radiation absorption capacity. The existing thickness gauge can only correct galvanized and aluminized layers and does not have the thickness compensation function of the aluminized and zinciferous layers, so that errors occur in measured values. Therefore, it is needed to find a thickness measurement compensation method for an aluminized zinc layer to improve the product quality.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for compensating thickness measurement of an aluminized zinc sheet, which compensates thickness of the aluminized zinc sheet, thereby eliminating measurement errors.
The technical scheme adopted by the invention is as follows:
The invention provides a thickness measurement compensation method for an aluminum-zinc plated plate, which comprises the following steps:
S1, according to a thickness gauge measurement principle, obtaining an expression for measuring the thickness of a material to be measured;
S2, obtaining an expression for measuring the total thickness of the aluminum-zinc plated plate by using a thickness gauge according to the expression in the step S1;
S3, obtaining an actual thickness expression of the aluminum-zinc plated plate;
s4, measuring the aluminum-zinc plated plate by using a thickness gauge, and compensating the plating type according to aluminum to obtain a compensated thickness expression;
And S5, when the plating layer type is compensated according to aluminum, multiplying the plating layer thickness which is transmitted to the thickness gauge at first level by a compensation coefficient, so that the actual thickness expression of the aluminum-zinc plated plate is equal to the compensated thickness expression, and the measured thickness of the thickness gauge can be compensated to the actual thickness.
Further, in the step S1, the expression of measuring the thickness of the material to be measured by the thickness gauge is i=i 0e-μd; wherein I 0 is the initial intensity of the ray; i is the intensity of the rays after passing through the tested body; d is the thickness of the measured material; mu is the absorption coefficient of the measured material; and (3) obtaining a measured thickness:
Further, in the step S2, the expression of the total thickness of the aluminized zinc sheet is i=i 0e-(μ1d1+μ2d2), so as to obtain a measured thickness:
Wherein d x is the thickness measured by the thickness gauge; d 1 is the substrate thickness; d 2 is the thickness of the aluminum zinc coating; mu 1 is the absorption coefficient of the substrate; mu 2 is the absorption coefficient of the aluminium zinc coating.
Further, in the step S3, the actual thickness expression of the aluminized zinc sheet is:
Further, in the step S4, the expression of the thickness of the aluminum plating plate is:
Wherein d y is the measured thickness of the thickness gauge when the plating layer type is compensated according to aluminum; mu 3 is the absorption coefficient of aluminium.
Further, the step S5 specifically includes: when the coating type is compensated according to aluminum, the coating thickness d 2 which is first transmitted to the thickness gauge is multiplied by a compensation coefficientThe actual thickness can be compensated by measuring the thickness; wherein the method comprises the steps of
Determination of μ 2/μ1: taking a pure aluminum zinc sample plate, measuring by using a micrometer to obtain the actual thickness, and then obtaining the measured thickness by using a thickness meter, wherein mu 2/μ1 = measured thickness/actual thickness;
Determination of μ 3/μ1: as the thickness gauge has the function of aluminized layer compensation, checking internal parameters can obtain mu 3/μ1 =0.083;
Determining coefficients therefrom
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the thickness of the aluminum-zinc plated plate is compensated, so that the measurement error is eliminated, the thickness qualification rate of the aluminum-zinc plated plate can be greatly improved, and the product quality can be effectively improved.
Drawings
FIG. 1 is a schematic flow chart of a method for compensating thickness measurement of an aluminum-zinc plated plate according to the present invention;
FIG. 2 is a schematic diagram showing the exponential decay of the intensity of the thickness gauge radiation with the thickness of the measured object.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 1, the invention provides a method for measuring and compensating the thickness of an aluminum-zinc plated plate, which specifically comprises the following steps:
S1, according to the measuring principle of the strip steel thickness gauge: when the rays emitted by the ray source pass through the measured object, attenuation is generated, the attenuation amplitude of the rays depends on the material and the thickness of the measured object, and when the material of the measured object is unchanged, the intensity of the rays passing through the measured object decays exponentially along with the change of the thickness of the measured object, as shown in fig. 2; specifically, the formula can be expressed as i=i 0e-μd; wherein I 0 is the initial intensity of the ray; i is the intensity of the rays after passing through the tested body; d is the thickness of the measured material; mu is the absorption coefficient of the measured material; and (3) obtaining a measured thickness:
S2, obtaining an expression for measuring the total thickness of the aluminum-zinc plated plate by using a thickness gauge according to the expression in the step S1; the expression of the total thickness of the aluminized zinc sheet is i=i 0e-(μ1d1+μ2d2), resulting in a measured thickness:
Wherein d x is the thickness measured by the thickness gauge; d 1 is the substrate thickness; d 2 is the thickness of the aluminum zinc coating; mu 1 is the absorption coefficient of the substrate; mu 2 is the absorption coefficient of the aluminium zinc coating.
S3, obtaining an actual thickness expression of the aluminum-zinc plated plate; the actual thickness expression of the aluminized zinc plate is as follows:
S4, measuring the aluminum-zinc plated plate by using a thickness gauge, and compensating the plating type according to aluminum to obtain a compensated aluminum-plated plate thickness expression:
Wherein d y is the measured thickness of the thickness gauge when the plating layer type is compensated according to aluminum; mu 3 is the absorption coefficient of aluminium.
S5, when the plating layer type is compensated according to aluminum, multiplying the plating layer thickness d 2 which is first-order transmitted to the thickness meter by a compensation coefficientD y is equal to d, and the measured thickness can be compensated to the actual thickness;
Determination of μ 2/μ1: taking a pure aluminum zinc sample plate, measuring by using a micrometer to obtain the actual thickness, and then obtaining the measured thickness by using a thickness meter, wherein mu 2/μ1 = measured thickness/actual thickness;
Table 1 experimental data
In this example, μ 2/μ1 =0.333 was obtained from the above experimental data.
Determination of μ 3/μ1: as the thickness gauge has the function of aluminized layer compensation, checking internal parameters can obtain mu 3/μ1 =0.083;
From this, the coefficients can be determined
Therefore, when the plating layer type is compensated according to aluminum, the plating layer thickness d 2 which is first transmitted to the thickness gauge is multiplied by a coefficient of 0.727, and the actual thickness can be compensated by measuring the thickness.
The following are specific experimental data after compensation value input:
Table 2 experimental data
In conclusion, the invention realizes the compensation function of the thickness gauge for measuring the thickness of the aluminum-zinc plated plate by modifying the first-level program, thereby ensuring that the measured value of the thickness gauge is more accurate and the thickness qualification rate of the aluminum-zinc plated plate is effectively ensured.
The invention is not fully described in detail in the prior art.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (6)
1. An aluminized zinc sheet thickness measurement compensation method, characterized by comprising the following steps:
S1, according to a thickness gauge measurement principle, obtaining an expression for measuring the thickness of a material to be measured;
S2, obtaining an expression for measuring the total thickness of the aluminum-zinc plated plate by using a thickness gauge according to the expression in the step S1;
S3, obtaining an actual thickness expression of the aluminum-zinc plated plate;
s4, measuring the aluminum-zinc plated plate by using a thickness gauge, and compensating the plating type according to aluminum to obtain a compensated thickness expression;
And S5, when the plating layer type is compensated according to aluminum, multiplying the plating layer thickness which is transmitted to the thickness gauge at first level by a compensation coefficient, so that the actual thickness expression of the aluminum-zinc plated plate is equal to the compensated thickness expression, and the measured thickness of the thickness gauge can be compensated to the actual thickness.
2. The method for compensating thickness measurement of an aluminum-zinc plated plate according to claim 1, wherein the method comprises the steps of: in the step S1, the expression of measuring the thickness of the material to be measured by the thickness gauge is i=i 0e-μd; wherein I 0 is the initial intensity of the ray; i is the intensity of the rays after passing through the tested body; d is the thickness of the measured material; mu is the absorption coefficient of the measured material; and (3) obtaining a measured thickness:
3. The method for compensating the thickness measurement of the aluminum-zinc plated plate according to claim 2, wherein the method comprises the following steps: in the step S2, the expression of the total thickness of the aluminized zinc sheet is i=i 0e-(μ1d1+μ2d2), so as to obtain a measured thickness:
Wherein d x is the thickness measured by the thickness gauge; d 1 is the substrate thickness; d 2 is the thickness of the aluminum zinc coating; mu 1 is the absorption coefficient of the substrate; mu 2 is the absorption coefficient of the aluminium zinc coating.
4. A method for compensating for thickness measurement of an aluminized zinc sheet according to claim 3, characterized by: in the step S3, the actual thickness expression of the aluminized zinc plate is:
5. The method for compensating thickness measurement of an aluminum-zinc plated plate according to claim 4, wherein the method comprises the steps of: in the step S4, the thickness expression of the aluminum plating plate is:
Wherein d y is the measured thickness of the thickness gauge when the plating layer type is compensated according to aluminum; mu 3 is the absorption coefficient of aluminium.
6. The method for compensating thickness measurement of an aluminum-zinc plated plate according to claim 5, wherein the method comprises the steps of: the step S5 specifically includes: when the coating type is compensated according to aluminum, the coating thickness d 2 which is first transmitted to the thickness gauge is multiplied by a compensation coefficientThe actual thickness can be compensated by measuring the thickness; wherein the method comprises the steps of
Determination of μ 2/μ1: taking a pure aluminum zinc sample plate, measuring by using a micrometer to obtain the actual thickness, and then obtaining the measured thickness by using a thickness meter, wherein mu 2/μ1 = measured thickness/actual thickness;
Determination of μ 3/μ1: as the thickness gauge has the function of aluminized layer compensation, checking internal parameters can obtain mu 3/μ1 =0.083;
Determining coefficients therefrom
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118293836A true CN118293836A (en) | 2024-07-05 |
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