CN103335996A - Measuring method for weight of passivating film of galvanized plate - Google Patents
Measuring method for weight of passivating film of galvanized plate Download PDFInfo
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- CN103335996A CN103335996A CN2013102239898A CN201310223989A CN103335996A CN 103335996 A CN103335996 A CN 103335996A CN 2013102239898 A CN2013102239898 A CN 2013102239898A CN 201310223989 A CN201310223989 A CN 201310223989A CN 103335996 A CN103335996 A CN 103335996A
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Abstract
The invention discloses a measuring method for the weight of a passivating film of a galvanized plate. The measuring method comprises the steps of: measuring the Cr content in the passivating film of a standard sample plate by utilizing a glow spectrometry, and comparing the Cr content with the standard Cr content of the standard sample plate to obtain a corresponding relation between the Cr content and the standard Cr content, wherein a measuring method for the standard Cr content of the standard sample plate comprises the steps of: adopting a film weight tester; measuring the Cr content of a sample plate to be measured by using the glow spectrometry, and calculating the standard Cr content of the sample plate to be measured by utilizing a corresponding relation. According to the measuring method for the weight of the passivating film of the galvanized plate, provided by the invention, the standard content of the Cr element in the sample plate to be measured can be obtained by only measuring the weight percentage content of the Cr element in the sample plate to be measured by utilizing the corresponding relation between the Cr content and the standard Cr content, so that the measuring efficiency of the weight of the passivating film of the galvanized plate is improved.
Description
Technical field
The present invention relates to the heavy measuring method of a kind of passivating film film, particularly the heavy measuring method of galvanized sheet passivating film film.
Background technology
The zinc coat of galvanized sheet belongs to anodic coating for iron substrate, reliable electrochemical protection can be provided, and is widely used in commercial production.But zinc coat very easily corrodes in wet environment, therefore need carry out the surface passivation processing and could strengthen its corrosion stability.Therefore the film of galvanized sheet surface passivated membrane heavily will directly influence its corrosion stability, in general measure the passivating film film and heavily adopt the heavy tester of film, and need in its instrument, shift to an earlier date input parameter and computing formula, parameter and computing formula then need great deal of experiment data accumulation in early stage to form, so use the heavy method of testing of this passivating film film to have inefficient problem.
Summary of the invention
Technical matters to be solved by this invention provides the heavy measuring method of a kind of galvanized sheet passivating film film, has solved the inefficient problem that the heavy measuring method of present galvanized sheet passivating film film exists.
For solving the problems of the technologies described above, the invention provides the heavy measuring method of a kind of galvanized sheet passivating film film, comprise:
Step 1: utilize aura spectrographic determination standard jig Cr in Passive Film content;
Step 2: the Cr standard content of described Cr content and described standard sample of photo is compared, obtain the corresponding relation of described Cr content and described Cr standard content, wherein, the measuring method of the Cr standard content of described standard sample of photo comprises the heavy tester of employing film;
Step 3: use aura spectrographic determination model Cr to be measured content, utilize described corresponding relation, calculate the Cr standard content of described model to be measured.
Further, this measuring method also comprises:
Described step 1 also comprises: utilize the Cr content of two above standard sample of photo of aura spectroscopy measurements, and the Cr content data that obtains is depicted as glow curve, then described glow curve is carried out match and form the aura matched curve;
Cr standard content with described standard sample of photo is depicted as typical curve, then described typical curve is carried out match and forms the standard fit curve;
Wherein, the ordinate of described glow curve or typical curve is the Cr constituent content.
Further, described step 3 also comprises: utilize the Cr content of the described print to be measured of aura spectroscopy measurements, and the corresponding relation by described aura matched curve and standard fit curve, calculate the Cr standard content of described print to be measured.
Further, described corresponding relation by described aura matched curve and standard fit curve, the Cr standard content that calculates described print to be measured comprises:
Cr content with described print to be measured is the straight line of ordinate value work and transverse axis, intersect at a little one with described aura matched curve, make the straight line parallel with the longitudinal axis through described point one again, and with described standard fit curve intersection in the point two, the ordinate value of described point two is the Cr standard content of described print to be measured.
The measuring method that galvanized sheet passivating film film provided by the invention is heavy, by aura spectrographic determination standard jig Cr in Passive Film element percentage composition, the Cr standard percentage content that provides with standard sample of photo compares then, can calculate the two corresponding relation of Cr element percentage composition and Cr standard percentage content, measure the quality percentage composition of model Cr element to be measured again, utilize this corresponding relation can draw the thickness of galvanized sheet passivating film.Thereby the measuring method that galvanized sheet passivating film film provided by the invention weighs is after obtaining aura matched curve and standard fit curve, only need to measure the quality percentage composition of model Cr element to be measured, can obtain the standard content of model Cr element to be measured, improve the heavy measurement efficient of galvanized sheet passivating film film.
Description of drawings
Fig. 1 is the synoptic diagram of glow curve, typical curve and fitting a straight line thereof in the heavy measuring method of the galvanized sheet passivating film film that provides of the embodiment of the invention;
Fig. 2 to Fig. 4 utilizes Fig. 1 to measure the synoptic diagram of the Cr element standard content of three sample to be tested passivating films.
Embodiment
The measuring method that galvanized sheet passivating film film provided by the invention is heavy is the Cr element based on measuring the heavy essential element of passivating film film, so it is heavy to use the content of Cr element representing the passivating film film.This measuring method overcome the heavy weight sensing instrument of existing passivating film film measure film heavy before, thereby need to form parameters and computing formula by a large amount of experimental datas of accumulation, and then cause measuring inefficient problem.
The measuring method that galvanized sheet passivating film film provided by the invention is heavy, be to draw glow curve by aura spectrographic determination standard jig Cr in Passive Film element percentage composition, the Cr standard percentage content that provides with standard sample of photo compares then, calculates improvement factor.Measure the quality percentage composition of model Cr element to be measured again, the comparison typical curve can draw Cr element standard content, i.e. passivating film thickness.
The measuring method that the galvanized sheet passivating film film that the embodiment of the invention provides is heavy comprises:
Step 1: utilize 8 standard jig Cr in Passive Film of aura spectrographic determination content, known standard model Cr in Passive Film standard content simultaneously, as following table 1:
Table 1
，
To contrast with standard sample of photo Cr constituent content and the standard sample of photo Cr standard content of aura spectrographic determination, the improvement factor that obtains is about 1.3, prove that this method has authenticity and exploitativeness, wherein, standard sample of photo Cr in Passive Film standard content adopts the heavy tester of film to measure;
Step 2: will utilize the Cr content data of 8 standard sample of photo of aura spectrographic determination, and be depicted as glow curve, and then glow curve be carried out match and form the aura matched curve, referring to Fig. 1; Cr element standard content with these 8 standard sample of photo is depicted as typical curve, then this typical curve is carried out match and forms the standard fit curve, referring to Fig. 1, wherein, ordinate is the content of Cr in Passive Film, and horizontal ordinate is the sequence number for the standard sample of photo of measuring;
Step 3: with the Cr element quality percentage composition of aura spectrographic determination print to be measured, as table 2:
Table 2
；
Step 4: by the corresponding relation of aura matched curve and standard fit curve, calculate the Cr standard content of print to be measured.Cr content with described print to be measured is the straight line of ordinate value work and transverse axis, intersect at a little one with described aura matched curve, make the straight line parallel with the longitudinal axis through described point one again, and with described standard fit curve intersection in the point two, the ordinate value of described point two is the Cr standard content of described print to be measured.
Be that 1 print to be measured is example with test piece number (Test pc No.) in the table 2, with Cr quality percentage composition Y=25.865mg/m
2Make the straight line with transverse axis, intersect with the aura matched curve and to obtain intersection point one, do straight line perpendicular to transverse axis by this intersection point one, and obtain intersection point two with the standard fit curve intersection, done perpendicular to the straight line of the longitudinal axis and with the longitudinal axis by this intersection point two and intersect, the ordinate of reading intersection point two obtains the Cr standard content that test piece number (Test pc No.) is 1 print to be measured, and it is heavy to be this passivating film film; Fig. 2 to Fig. 4 is the synoptic diagram of mensuration process of the Cr standard content of print to be measured.
Table 3 is Cr element standard contents that print to be measured adopts this measuring method to obtain:
Table 3
。
Table 4 is that the Cr element standard content that will adopt this measuring method to obtain is measured the comparison of the Cr element standard content of the print to be measured that obtains with using the heavy instrument of conventional film:
Table 4
, show according to error, be about 1% with measuring method provided by the invention the passivating film film tuple certificate of measuring and the film tuple of measuring with conventional coating weight measuring test instrument according to error, belong in the nominal error scope, final data result there is not influence.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to example the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. the measuring method that galvanized sheet passivating film film is heavy is characterized in that, comprises:
Step 1: utilize aura spectrographic determination standard jig Cr in Passive Film content;
Step 2: the Cr standard content of described Cr content and described standard sample of photo is compared, obtain the corresponding relation of described Cr content and described Cr standard content, wherein, the measuring method of the Cr standard content of described standard sample of photo comprises the heavy tester of employing film;
Step 3: use aura spectrographic determination model Cr to be measured content, utilize described corresponding relation, calculate the Cr standard content of described model to be measured.
2. measuring method as claimed in claim 1 is characterized in that,
Described step 1 also comprises: utilize the Cr content of two above standard sample of photo of aura spectroscopy measurements, and the Cr content data that obtains is depicted as glow curve, then described glow curve is carried out match and form the aura matched curve;
Cr standard content with described standard sample of photo is depicted as typical curve, then described typical curve is carried out match and forms the standard fit curve;
Wherein, the ordinate of described glow curve or typical curve is the Cr constituent content.
3. measuring method as claimed in claim 2 is characterized in that, described step 3 also comprises:
Utilize the Cr content of the described print to be measured of aura spectroscopy measurements, and the corresponding relation by described aura matched curve and standard fit curve, calculate the Cr standard content of described print to be measured.
4. measuring method as claimed in claim 3 is characterized in that, described corresponding relation by described aura matched curve and standard fit curve, and the Cr standard content that calculates described print to be measured comprises:
Cr content with described print to be measured is the straight line of ordinate value work and transverse axis, intersect at a little one with described aura matched curve, make the straight line parallel with the longitudinal axis through described point one again, and with described standard fit curve intersection in the point two, the ordinate value of described point two is the Cr standard content of described print to be measured.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770188A (en) * | 2015-11-24 | 2017-05-31 | 上海梅山钢铁股份有限公司 | A kind of detection method of tin plate chromium-free passivating film film weight |
| CN107884391A (en) * | 2017-10-12 | 2018-04-06 | 首钢集团有限公司 | Utilize the method for Sheets By Glow Discharge Aes measurement cold-rolled steel sheet zirconium film film weight |
| CN108180846A (en) * | 2017-11-30 | 2018-06-19 | 广州兴森快捷电路科技有限公司 | Organic guarantor welds the process control method of film and film thickness acquisition methods |
| CN110455868A (en) * | 2019-08-19 | 2019-11-15 | 昆明理工大学 | A method of concrete construction site early moist curing effect is detected using surface resistivity |
| CN113281326A (en) * | 2021-05-21 | 2021-08-20 | 安泰科技股份有限公司 | Characterization method of thickness of galvanized passivation film |
| CN114324431A (en) * | 2021-12-06 | 2022-04-12 | 青岛河钢复合新材料科技有限公司 | Method for testing film weight of chromium-free passive film of color-coated plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770188A (en) * | 2015-11-24 | 2017-05-31 | 上海梅山钢铁股份有限公司 | A kind of detection method of tin plate chromium-free passivating film film weight |
| CN107884391A (en) * | 2017-10-12 | 2018-04-06 | 首钢集团有限公司 | Utilize the method for Sheets By Glow Discharge Aes measurement cold-rolled steel sheet zirconium film film weight |
| CN108180846A (en) * | 2017-11-30 | 2018-06-19 | 广州兴森快捷电路科技有限公司 | Organic guarantor welds the process control method of film and film thickness acquisition methods |
| CN108180846B (en) * | 2017-11-30 | 2020-11-17 | 广州兴森快捷电路科技有限公司 | Process control method and film thickness obtaining method of organic solderability preservative film |
| CN110455868A (en) * | 2019-08-19 | 2019-11-15 | 昆明理工大学 | A method of concrete construction site early moist curing effect is detected using surface resistivity |
| CN113281326A (en) * | 2021-05-21 | 2021-08-20 | 安泰科技股份有限公司 | Characterization method of thickness of galvanized passivation film |
| CN114324431A (en) * | 2021-12-06 | 2022-04-12 | 青岛河钢复合新材料科技有限公司 | Method for testing film weight of chromium-free passive film of color-coated plate |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |
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