CN103335996A - Measuring method for weight of passivating film of galvanized plate - Google Patents

Measuring method for weight of passivating film of galvanized plate Download PDF

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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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苗雨芳
杨瑞枫
赵晓非
郑天然
李晓刚
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Shougang Group Co Ltd
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Abstract

本发明公开了一种镀锌板钝化膜膜重的测量方法,包含:利用辉光光谱法测定标准样板钝化膜中Cr含量将所述Cr含量与所述标准样片的Cr标准含量进行对比,得到所述Cr含量与所述Cr标准含量的对应关系,其中,所述标准样片的Cr标准含量的测量方法包含采用膜重测试仪;使用辉光光谱法测定待测样板Cr含量,利用所述对应关系,计算出所述待测样板的Cr标准含量。本发明提供的镀锌板钝化膜膜重的测量方法,利用所述Cr含量与所述Cr标准含量的对应关系,只需要测定待测样板Cr元素的质量百分含量,即可得到待测样板Cr元素的标准含量,提高了镀锌板钝化膜膜重的测量效率。

The invention discloses a method for measuring the film weight of a passivation film on a galvanized sheet, comprising: measuring the Cr content in the passivation film of a standard sample by using a glow spectrum method, and comparing the Cr content with the standard Cr content of the standard sample , 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 comprises adopting film weight tester; Use glow spectrometry to measure the Cr content of sample to be tested, utilize the According to the corresponding relationship, the Cr standard content of the sample to be tested is calculated. The method for measuring the weight of the passivation film on a galvanized sheet provided by the present invention uses the corresponding relationship between the Cr content and the Cr standard content, and only needs to measure the mass percentage content of the Cr element of the sample to be tested to obtain the The standard content of the Cr element in the template improves the measurement efficiency of the passivation film weight of the galvanized sheet.

Description

一种镀锌板钝化膜膜重的测量方法A method for measuring the weight of passivation film on galvanized sheet

技术领域technical field

本发明涉及一种钝化膜膜重的测量方法,特别涉及镀锌板钝化膜膜重的测量方法。The invention relates to a method for measuring the film weight of a passivation film, in particular to a method for measuring the film weight of a galvanized plate passivation film.

背景技术Background technique

镀锌板的镀锌层对于铁基板而言,属于阳极性镀层,能提供可靠的电化学保护,在工业生产中被广泛应用。但是镀锌层在潮湿环境中极易发生腐蚀,因此需要进行表面钝化处理才能增强其耐蚀性。因此镀锌板表面钝化膜的膜重将直接影响其耐蚀性,一般来说测定钝化膜膜重采用膜重测试仪,并需要在其仪器中提前输入参数及计算公式,而参数及计算公式则需要前期大量的实验数据积累形成,所以使用这种钝化膜膜重的测试方法存在效率低的问题。The galvanized layer of the galvanized sheet is an anodic coating for the iron substrate, which can provide reliable electrochemical protection and is widely used in industrial production. However, the galvanized layer is extremely prone to corrosion in a humid environment, so surface passivation treatment is required to enhance its corrosion resistance. Therefore, the film weight of the passivation film on the surface of the galvanized sheet will directly affect its corrosion resistance. Generally speaking, a film weight tester is used to measure the film weight of the passivation film, and parameters and calculation formulas need to be input in advance in the instrument, while the parameters and The calculation formula requires the accumulation of a large amount of experimental data in the early stage, so there is a problem of low efficiency when using this test method for the film weight of the passivation film.

发明内容Contents of the invention

本发明所要解决的技术问题是提供一种镀锌板钝化膜膜重的测量方法,解决了目前镀锌板钝化膜膜重的测量方法存在的效率低的问题。The technical problem to be solved by the present invention is to provide a method for measuring the weight of the passivation film on a galvanized sheet, which solves the problem of low efficiency in the current method for measuring the weight of the passivation film on a galvanized sheet.

为解决上述技术问题,本发明提供了一种镀锌板钝化膜膜重的测量方法,包含:In order to solve the above technical problems, the invention provides a method for measuring the weight of a passivation film on a galvanized sheet, comprising:

步骤一:利用辉光光谱法测定标准样板钝化膜中Cr含量;Step 1: Utilize glow spectrometry to measure the Cr content in the passivation film of the standard sample;

步骤二:将所述Cr含量与所述标准样片的Cr标准含量进行对比,得到所述Cr含量与所述Cr标准含量的对应关系,其中,所述标准样片的Cr标准含量的测量方法包含采用膜重测试仪;Step 2: comparing the Cr content with the Cr standard content of the standard sample to obtain the corresponding relationship between the Cr content and the Cr standard content, wherein the measurement method of the Cr standard content of the standard sample includes using Film weight tester;

步骤三:使用辉光光谱法测定待测样板Cr含量,利用所述对应关系,计算出所述待测样板的Cr标准含量。Step 3: Determining the Cr content of the sample to be tested by using the glow spectrometry, and calculating the standard Cr content of the sample to be tested by using the corresponding relationship.

进一步地,本测量方法还包含:Further, this measurement method also includes:

所述步骤一还包含:利用辉光光谱法测量两块以上标准样片的Cr含量,并将得到的Cr含量数据绘制成辉光曲线,然后将所述辉光曲线进行拟合形成辉光拟合曲线;The first step also includes: measuring the Cr content of more than two standard samples by using glow spectroscopy, and drawing the obtained Cr content data into a glow curve, and then fitting the glow curve to form a glow fitting curve;

将所述标准样片的Cr标准含量,绘制成标准曲线,然后将所述标准曲线进行拟合形成标准拟合曲线;The Cr standard content of the standard sample is drawn into a standard curve, and then the standard curve is fitted to form a standard fitting curve;

其中,所述辉光曲线或标准曲线的纵坐标是Cr元素含量。Wherein, the ordinate of the glow curve or standard curve is Cr element content.

进一步地,所述步骤三还包含:利用辉光光谱法测量所述待测样片的Cr含量,并通过所述辉光拟合曲线与标准拟合曲线的对应关系,计算出所述待测样片的Cr标准含量。Further, the step 3 also includes: measuring the Cr content of the sample to be tested by using glow spectroscopy, and calculating the Cr content of the sample to be tested through the corresponding relationship between the glow fitting curve and the standard fitting curve. Cr standard content.

进一步地,所述通过所述辉光拟合曲线与标准拟合曲线的对应关系,计算出所述待测样片的Cr标准含量包含:Further, through the corresponding relationship between the glow fitting curve and the standard fitting curve, calculating the Cr standard content of the sample to be tested includes:

以所述待测样片的Cr含量为纵坐标值作与横轴平行的直线,与所述辉光拟合曲线相交于点一,再经所述点一作与纵轴平行的直线,并与所述标准拟合曲线相交于点二,所述点二的纵坐标值即为所述待测样片的Cr标准含量。Take the Cr content of the sample to be tested as the ordinate value to draw a straight line parallel to the horizontal axis, intersect with the glow fitting curve at point one, and then draw a straight line parallel to the vertical axis through the point one, and connect with the The standard fitting curve intersects at point two, and the ordinate value of the point two is the Cr standard content of the sample to be tested.

本发明提供的镀锌板钝化膜膜重的测量方法,通过辉光光谱法测定标准样板钝化膜中Cr元素百分含量,然后与标准样片给出的Cr标准百分含量进行对比,可以计算得到Cr元素百分含量与Cr标准百分含量二者的对应关系,再测定待测样板Cr元素的质量百分含量,利用该对应关系即可得出镀锌板钝化膜的膜厚。因而本发明提供的镀锌板钝化膜膜重的测量方法在得到辉光拟合曲线与标准拟合曲线后,只需要测定待测样板Cr元素的质量百分含量,即可得到待测样板Cr元素的标准含量,提高了镀锌板钝化膜膜重的测量效率。The method for measuring the weight of the passivation film on a galvanized sheet provided by the present invention is to measure the Cr element percentage content in the passivation film of the standard sample by glow spectrometry, and then compare it with the Cr standard percentage content provided by the standard sample, which can be Calculate the corresponding relationship between the Cr element percentage content and the Cr standard percentage content, and then measure the mass percentage content of the Cr element of the sample to be tested, and use the corresponding relationship to obtain the film thickness of the passivation film on the galvanized sheet. Therefore, after obtaining the glow fitting curve and the standard fitting curve in the method for measuring the weight of the passivation film on a galvanized sheet provided by the present invention, it only needs to measure the mass percentage content of the Cr element of the sample to be tested, and then the sample to be tested can be obtained. The standard content of the Cr element improves the measurement efficiency of the passivation film weight of the galvanized sheet.

附图说明Description of drawings

图1是本发明实施例提供的镀锌板钝化膜膜重的测量方法中辉光曲线、标准曲线及其拟合直线的示意图;Fig. 1 is the schematic diagram of glow curve, standard curve and fitting straight line thereof in the measurement method of galvanized sheet passivation film film weight that the embodiment of the present invention provides;

图2至图4是利用图1测定三个待测试样钝化膜的Cr元素标准含量的示意图。Fig. 2 to Fig. 4 are schematic diagrams of determining standard content of Cr element in passivation films of three test samples by using Fig. 1 .

具体实施方式Detailed ways

本发明提供的镀锌板钝化膜膜重的测量方法,基于测定钝化膜膜重的主要元素为Cr元素,所以使用Cr元素的含量代表着钝化膜膜重。本测量方法克服了现有钝化膜膜重测重仪测定膜重前,需通过积累大量实验数据从而形成参数及计算公式,进而导致测量效率低的问题。The method for measuring the weight of the passivation film on a galvanized sheet provided by the present invention is based on the fact that the main element for determining the weight of the passivation film is Cr, so the content of the Cr element is used to represent the weight of the passivation film. This measurement method overcomes the problem of low measurement efficiency due to the accumulation of a large amount of experimental data to form parameters and calculation formulas before the existing passivation film weight measuring instrument measures the film weight.

本发明提供的镀锌板钝化膜膜重的测量方法,是通过辉光光谱法测定标准样板钝化膜中Cr元素百分含量来绘制辉光曲线,然后与标准样片给出的Cr标准百分含量进行对比,计算出矫正因子。再测定待测样板Cr元素的质量百分含量,比对标准曲线即可得出Cr元素标准含量,即钝化膜膜厚。The measuring method of the passive film film weight of the galvanized sheet provided by the present invention is to measure the Cr element percentage content in the passivation film of the standard sample by glow spectrometry to draw the glow curve, and then compare with the Cr standard percentage that the standard sample provides. Comparing the sub-contents, the correction factor is calculated. Then measure the mass percentage content of the Cr element of the sample to be tested, and compare it with the standard curve to obtain the standard content of the Cr element, that is, the film thickness of the passivation film.

本发明实施例提供的镀锌板钝化膜膜重的测量方法,包含:The method for measuring the weight of the passivation film on a galvanized sheet provided in the embodiments of the present invention includes:

步骤一:利用辉光光谱法测定8块标准样板钝化膜中Cr含量,同时已知标准样板钝化膜中Cr标准含量,如下表1:Step 1: Use glow spectrometry to measure the Cr content in the passivation film of 8 standard samples. At the same time, the standard content of Cr in the passivation film of the standard sample is known, as shown in Table 1 below:

表1Table 1

Figure BDA00003312789500031
Figure BDA00003312789500031

,

将用辉光光谱法测定的标准样片Cr元素含量与标准样片Cr标准含量对比,得到的矫正因子约为1.3,证明该方法具有真实性及可实施性,其中,标准样片钝化膜中Cr标准含量是采用膜重测试仪进行测定的;Comparing the Cr element content of the standard sample measured by glow spectroscopy with the standard Cr standard content, the correction factor obtained is about 1.3, which proves that the method is authentic and feasible. Among them, the Cr standard in the passivation film of the standard sample The content is measured by a film weight tester;

步骤二:将利用辉光光谱法测定的8块标准样片的Cr含量数据,绘制成辉光曲线,然后将辉光曲线进行拟合形成辉光拟合曲线,参见图1;将该8块标准样片的Cr元素标准含量,绘制成标准曲线,然后将该标准曲线进行拟合形成标准拟合曲线,参见图1,其中,纵坐标为钝化膜中Cr的含量,横坐标是用于测定的标准样片的序号;Step 2: Draw the Cr content data of 8 standard samples measured by glow spectroscopy into a glow curve, and then fit the glow curve to form a glow fitting curve, see Figure 1; the 8 standard samples The standard content of the Cr element of the sample is drawn into a standard curve, and then the standard curve is fitted to form a standard fitting curve, see Figure 1, where the ordinate is the content of Cr in the passivation film, and the abscissa is used for determination The serial number of the standard sample;

步骤三:用辉光光谱法测定待测样片的Cr元素质量百分含量,如表2:Step 3: Determination of the Cr element mass percentage content of the sample to be tested by glow spectrometry, as shown in Table 2:

表2Table 2

Figure BDA00003312789500042
Figure BDA00003312789500042

;

步骤四:通过辉光拟合曲线与标准拟合曲线的对应关系,计算出待测样片的Cr标准含量。以所述待测样片的Cr含量为纵坐标值作与横轴平行的直线,与所述辉光拟合曲线相交于点一,再经所述点一作与纵轴平行的直线,并与所述标准拟合曲线相交于点二,所述点二的纵坐标值即为所述待测样片的Cr标准含量。Step 4: Calculate the standard Cr content of the sample to be tested through the corresponding relationship between the glow fitting curve and the standard fitting curve. Take the Cr content of the sample to be tested as the ordinate value to draw a straight line parallel to the horizontal axis, intersect with the glow fitting curve at point one, then draw a straight line parallel to the vertical axis through the point one, and connect with the The standard fitting curve intersects at point two, and the ordinate value of the point two is the Cr standard content of the sample to be tested.

以表2中试样号为1的待测样片为例,以Cr质量百分含量Y=25.865mg/m2,作与横轴平行的直线,与辉光拟合曲线进行相交得到交点一,由该交点一做垂直于横轴的直线,并与标准拟合曲线相交得到交点二,再由该交点二做垂直于纵轴的直线并与纵轴相交,读出交点二的纵坐标得到试样号为1的待测样片的Cr标准含量,即为该钝化膜膜重;图2至图4即为待测样片的Cr标准含量的测定过程的示意图。Taking the sample to be tested with the sample number 1 in Table 2 as an example, take the Cr mass percentage Y=25.865mg/m 2 , draw a straight line parallel to the horizontal axis, and intersect with the glow fitting curve to obtain intersection point 1, Draw a straight line perpendicular to the horizontal axis from the intersection point 1, and intersect with the standard fitting curve to obtain intersection point 2, then draw a straight line perpendicular to the vertical axis from the intersection point 2 and intersect with the vertical axis, read the ordinate of intersection point 2 to obtain the test The Cr standard content of the sample to be tested with sample number 1 is the film weight of the passivation film; Figures 2 to 4 are schematic diagrams of the determination process of the Cr standard content of the sample to be tested.

表3是待测样片采用本测量方法得到的Cr元素标准含量:Table 3 is the standard content of Cr element obtained by using this measurement method for the sample to be tested:

表3table 3

Figure BDA00003312789500051
Figure BDA00003312789500051

.

表4是将采用本测量方法得到的Cr元素标准含量与使用常规的膜重仪测定得到的待测样片的Cr元素标准含量的比较:Table 4 is the comparison of the Cr element standard content obtained by this measuring method with the Cr element standard content of the sample to be tested obtained by using a conventional film weight meter:

表4Table 4

Figure BDA00003312789500052
Figure BDA00003312789500052

,根据误差显示,用本发明提供的测量方法测定的钝化膜膜重数据与用常规的膜重测定仪测定的膜重数据误差约为1%,属于正常误差范围内,对最终数据结果无影响。According to the error display, the error of the film weight data of the passive film measured by the measurement method provided by the invention and the film weight data measured by the conventional film weight measuring instrument is about 1%, which belongs to the normal error range, and has no influence on the final data result. Influence.

最后所应说明的是,以上具体实施方式仅用以说明本发明的技术方案而非限制,尽管参照实例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围,其均应涵盖在本发明的权利要求范围当中。Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (4)

1.一种镀锌板钝化膜膜重的测量方法,其特征在于,包含:1. A method for measuring the weight of a galvanized sheet passivation film, characterized in that, comprising: 步骤一:利用辉光光谱法测定标准样板钝化膜中Cr含量;Step 1: Utilize glow spectrometry to measure the Cr content in the passivation film of the standard sample; 步骤二:将所述Cr含量与所述标准样片的Cr标准含量进行对比,得到所述Cr含量与所述Cr标准含量的对应关系,其中,所述标准样片的Cr标准含量的测量方法包含采用膜重测试仪;Step 2: comparing the Cr content with the Cr standard content of the standard sample to obtain the corresponding relationship between the Cr content and the Cr standard content, wherein the measurement method of the Cr standard content of the standard sample includes using Film weight tester; 步骤三:使用辉光光谱法测定待测样板Cr含量,利用所述对应关系,计算出所述待测样板的Cr标准含量。Step 3: Determining the Cr content of the sample to be tested by using the glow spectrometry, and calculating the standard Cr content of the sample to be tested by using the corresponding relationship. 2.如权利要求1所述的测量方法,其特征在于,2. measuring method as claimed in claim 1, is characterized in that, 所述步骤一还包含:利用辉光光谱法测量两块以上标准样片的Cr含量,并将得到的Cr含量数据绘制成辉光曲线,然后将所述辉光曲线进行拟合形成辉光拟合曲线;The first step also includes: measuring the Cr content of more than two standard samples by using glow spectroscopy, and drawing the obtained Cr content data into a glow curve, and then fitting the glow curve to form a glow fitting curve; 将所述标准样片的Cr标准含量,绘制成标准曲线,然后将所述标准曲线进行拟合形成标准拟合曲线;The Cr standard content of the standard sample is drawn into a standard curve, and then the standard curve is fitted to form a standard fitting curve; 其中,所述辉光曲线或标准曲线的纵坐标是Cr元素含量。Wherein, the ordinate of the glow curve or standard curve is Cr element content. 3.如权利要求2所述的测量方法,其特征在于,所述步骤三还包含:3. measuring method as claimed in claim 2, is characterized in that, described step 3 also comprises: 利用辉光光谱法测量所述待测样片的Cr含量,并通过所述辉光拟合曲线与标准拟合曲线的对应关系,计算出所述待测样片的Cr标准含量。The Cr content of the sample to be tested is measured by glow spectroscopy, and the standard Cr content of the sample to be tested is calculated through the corresponding relationship between the glow fitting curve and the standard fitting curve. 4.如权利要求3所述的测量方法,其特征在于,所述通过所述辉光拟合曲线与标准拟合曲线的对应关系,计算出所述待测样片的Cr标准含量包含:4. measuring method as claimed in claim 3, is characterized in that, described by the corresponding relation of described glow fitting curve and standard fitting curve, calculates that the Cr standard content of described sample to be tested comprises: 以所述待测样片的Cr含量为纵坐标值作与横轴平行的直线,与所述辉光拟合曲线相交于点一,再经所述点一作与纵轴平行的直线,并与所述标准拟合曲线相交于点二,所述点二的纵坐标值即为所述待测样片的Cr标准含量。Take the Cr content of the sample to be tested as the ordinate value to draw a straight line parallel to the horizontal axis, intersect with the glow fitting curve at point one, then draw a straight line parallel to the vertical axis through the point one, and connect with the The standard fitting curve intersects at point two, and the ordinate value of the point two is the Cr standard content of the sample to be tested.
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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
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 for detecting the early wet curing effect of concrete construction site by 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)

* Cited by examiner, † Cited by third party
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 for detecting the early wet curing effect of concrete construction site by 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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