CN103335996B - The measuring method that a kind of galvanized sheet passivating film film is heavy - Google Patents
The measuring method that a kind of galvanized sheet passivating film film is heavy Download PDFInfo
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- CN103335996B CN103335996B CN201310223989.8A CN201310223989A CN103335996B CN 103335996 B CN103335996 B CN 103335996B CN 201310223989 A CN201310223989 A CN 201310223989A CN 103335996 B CN103335996 B CN 103335996B
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Abstract
The invention discloses the measuring method that a kind of galvanized sheet passivating film film is heavy, comprise: utilize glow discharge optical emission spectrometry bioassay standard model Cr in Passive Film content to be contrasted by the Cr standard content of described Cr content and described standard sample of photo, 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; Use glow discharge optical emission spectrometry to measure model Cr content to be measured, utilize described corresponding relation, calculate the Cr standard content of described model to be measured.The measuring method that galvanized sheet passivating film film provided by the invention is heavy, utilize the corresponding relation of described Cr content and described Cr standard content, only need the mass percentage measuring model Cr element to be measured, the standard content of model Cr element to be measured can be obtained, improve the measurement efficiency that galvanized sheet passivating film film is heavy.
Description
Technical field
The present invention relates to the measuring method that a kind of passivating film film is heavy, the measuring method that particularly galvanized sheet passivating film film is heavy.
Background technology
The zinc coat of galvanized sheet, for iron substrate, belongs to anodic coating, can provide reliable electrochemical protection, be widely used in the industrial production.But zinc coat very easily corrodes in wet environment, therefore need to carry out surface passivating treatment and could strengthen its corrosion stability.Therefore the film of galvanized sheet surface passivated membrane heavily will directly affect its corrosion stability, in general measure passivating film film and heavily adopt the heavy tester of film, and need to shift to an earlier date input parameter and computing formula in its instrument, the experimental data accumulation that parameter and computing formula then need early stage a large amount of is formed, so use the heavy method of testing of this passivating film film to there is inefficient problem.
Summary of the invention
Technical matters to be solved by this invention is to provide the heavy measuring method of a kind of galvanized sheet passivating film film, solves the inefficient problem that the heavy measuring method of current galvanized sheet passivating film film exists.
For solving the problems of the technologies described above, the invention provides the measuring method that a kind of galvanized sheet passivating film film is heavy, comprising:
Step one: utilize glow discharge optical emission spectrometry bioassay standard model Cr in Passive Film content;
Step 2: the Cr standard content of described Cr content and described standard sample of photo is contrasted, obtains 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 glow discharge optical emission spectrometry to measure model Cr content to be measured, utilize described corresponding relation, calculate the Cr standard content of described model to be measured.
Further, this measuring method also comprises:
Described step one also comprises: utilize glow discharge optical emission spectrometry to measure the Cr content of more than two pieces standard sample of photo, and the Cr content data obtained is depicted as glow curve, then described glow curve is carried out matching and forms aura matched curve;
By the Cr standard content of described standard sample of photo, be depicted as typical curve, then described typical curve carried out matching and form standard fit curve;
Wherein, the ordinate of described glow curve or typical curve is Cr constituent content.
Further, described step 3 also comprises: utilize glow discharge optical emission spectrometry to measure the Cr content of described print to be measured, and by the corresponding relation of described aura matched curve and standard fit curve, calculates the Cr standard content of described print to be measured.
Further, the described corresponding relation by described aura matched curve and standard fit curve, the Cr standard content calculating described print to be measured comprises:
With the Cr content of described print to be measured for ordinate value makes the straight line parallel with transverse axis, a little one is intersected at described aura matched curve, the straight line with longitudinal axis is made again through described point one, and with described standard fit curve intersection in 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 glow discharge optical emission spectrometry bioassay standard model Cr in Passive Film element percentage composition, then the Cr standard percentage content provided with standard sample of photo contrasts, Cr element percentage composition and the corresponding relation both Cr standard percentage content can be calculated, measure the mass percentage of model Cr element to be measured again, utilize this corresponding relation can draw the thickness of galvanized sheet passivating film.Thus the measuring method that galvanized sheet passivating film film provided by the invention is heavy is after obtaining aura matched curve and standard fit curve, only need the mass percentage measuring model Cr element to be measured, the standard content of model Cr element to be measured can be obtained, improve the measurement efficiency that galvanized sheet passivating film film is heavy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of glow curve, typical curve and fitting a straight line thereof in the measuring method of the galvanized sheet passivating film film weight that the embodiment of the present invention provides;
Fig. 2 to Fig. 4 is the schematic diagram utilizing Fig. 1 to measure the Cr elemental standards 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 Cr element based on the essential element measuring passivating film film heavy, so use the content of Cr element to represent passivating film film weight.This measuring method overcome existing passivating film film heavy weight sensing instrument measure film heavy before, parameter and computing formula need be formed by accumulation lot of experimental data, and then cause measuring inefficient problem.
The measuring method that galvanized sheet passivating film film provided by the invention is heavy, draw glow curve by glow discharge optical emission spectrometry bioassay standard model Cr in Passive Film element percentage composition, then the Cr standard percentage content provided with standard sample of photo contrasts, and calculates improvement factor.Measure the mass percentage of model Cr element to be measured again, comparison typical curve can draw Cr elemental standards content, i.e. passivating film thickness.
The measuring method that the galvanized sheet passivating film film that the embodiment of the present invention provides is heavy, comprises:
Step one: utilize glow discharge optical emission spectrometry to measure 8 pieces of standard jig Cr in Passive Film content, simultaneously known standard jig Cr in Passive Film standard content, as following table 1:
Table 1
The standard sample of photo Cr constituent content measured with glow discharge optical emission spectrometry and standard sample of photo Cr standard content are contrasted, the improvement factor obtained is about 1.3, prove that the 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: the Cr content data of the 8 pieces of standard sample of photo measured utilizing glow discharge optical emission spectrometry, is depicted as glow curve, then carries out matching and forms aura matched curve, see Fig. 1 by glow curve; By the Cr elemental standards content of these 8 pieces of standard sample of photo, be depicted as typical curve, then this typical curve carried out matching and form standard fit curve, see 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 measured;
Step 3: the Cr element mass percentage measuring print to be measured with glow discharge optical emission spectrometry, 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.With the Cr content of described print to be measured for ordinate value makes the straight line parallel with transverse axis, a little one is intersected at described aura matched curve, the straight line with longitudinal axis is made again through described point one, and with described standard fit curve intersection in point two, the ordinate value of described point two is the Cr standard content of described print to be measured.
For the print to be measured that test piece number (Test pc No.) in table 2 is 1, with Cr mass percentage Y=25.865mg/m
2make the straight line parallel with transverse axis, carry out crossingly obtaining intersection point one with aura matched curve, the straight line perpendicular to transverse axis is done by this intersection point one, and obtain intersection point two with standard fit curve intersection, do straight line perpendicular to the longitudinal axis by this intersection point two again and and longitudinal axis, read the ordinate of intersection point two and obtain the Cr standard content that test piece number (Test pc No.) is the print to be measured of 1, be this passivating film film weight; Fig. 2 to Fig. 4 is the schematic diagram of the mensuration process of the Cr standard content of print to be measured.
Table 3 is the Cr elemental standards content that print to be measured adopts this measuring method to obtain:
Table 3
Table 4 is that the Cr elemental standards content adopting this measuring method to obtain is measured comparing of the Cr elemental standards content of the print to be measured obtained with using the heavy instrument of conventional film:
Table 4
, according to error display, the passivating film film tuple measured by measuring method provided by the invention, according to being about 1% with the heavy data error of film measured with the coating weight measuring test instrument of routine, belongs within the scope of nominal error, on final data result without impact.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. the measuring method that galvanized sheet passivating film film is heavy, is characterized in that, comprise:
Step one: utilize glow discharge optical emission spectrometry bioassay standard model Cr in Passive Film content;
Step 2: the Cr standard content of described Cr content and described standard sample of photo is contrasted, obtains 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 glow discharge optical emission spectrometry to measure model Cr content to be measured, utilize described corresponding relation, calculate the Cr standard content of described model to be measured;
Described step one also comprises: utilize glow discharge optical emission spectrometry to measure the Cr content of more than two pieces standard sample of photo, and the Cr content data obtained is depicted as glow curve, then described glow curve is carried out matching and forms aura matched curve;
By the Cr standard content of described standard sample of photo, be depicted as typical curve, then described typical curve carried out matching and form standard fit curve;
Wherein, the ordinate of described glow curve or typical curve is Cr constituent content.
2. measuring method as claimed in claim 1, it is characterized in that, described step 3 also comprises:
Utilize glow discharge optical emission spectrometry to measure the Cr content of described print to be measured, and by the corresponding relation of described aura matched curve and standard fit curve, calculate the Cr standard content of described print to be measured.
3. measuring method as claimed in claim 2, is characterized in that, the described corresponding relation by described aura matched curve and standard fit curve, and the Cr standard content calculating described print to be measured comprises:
With the Cr content of described print to be measured for ordinate value makes the straight line parallel with transverse axis, a little one is intersected at described aura matched curve, the straight line with longitudinal axis is made again through described point one, and with described standard fit curve intersection in point two, the ordinate value of described point two is the Cr standard content of described print to be measured.
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| 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 |
| 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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| CN101349546A (en) * | 2008-09-11 | 2009-01-21 | 首钢总公司 | Method for detecting hot dip galvanizing plate iron aluminum central layer thickness |
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