CN105157643A - Method for detecting polishing trace on painting surface - Google Patents
Method for detecting polishing trace on painting surface Download PDFInfo
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- CN105157643A CN105157643A CN201510690104.4A CN201510690104A CN105157643A CN 105157643 A CN105157643 A CN 105157643A CN 201510690104 A CN201510690104 A CN 201510690104A CN 105157643 A CN105157643 A CN 105157643A
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- steel plate
- vestige
- coating
- polishing
- lattice
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Abstract
The invention discloses a method for detecting the polishing trace on a painting surface. The method comprises steps of painting an electrophoresis steel plate with painting; performing polishing with sand paper; dividing areas; arranging film thickness bars; spraying painting with different amounts; executing visual observation; measuring chromatic aberration data by using a colorimeter; and measuring the thicknesses of the film thickness bars to complete the detection of the polishing trace on the painting surface. The method prevents repeated tests, shortens onsite problem treating time, and is fast and high in efficiency.
Description
Technical field
The present invention relates to the detection method of a kind of coating surface polishing vestige, particularly relate to a kind of detection method of automobile coating surface finish vestige.
Background technology
In the recent period, certain automobile making main engine plants is reflected in coating process, due to environmental problem, often occurs that individual sites needs to use sand papering, returns spray to cover the sand papering vestige occurred because of sand papering afterwards with coating.
In prior art, in order to determine to regurgitate coating consumption normally by actual production technique to one block of on-the-spot electrophoresis coating steel plate coating; Imitate the technique for grinding of on-the-spot sand paper afterwards, steel plate manufactures polishing cut; Last according to passing experience, return some coating of spray to polishing position, after visual judgement covering effect is good, baking steel plate, measures the thickness regurgitating coating, namely thinks that the coating regurgitating this thickness perfectly can hide polishing vestige.
But there are some problems in the method for this evaluation in reality judges.Such as, when testing, finding substantially can cover in polishing vestige after the coating that application 20 μm is thick, therefore judging to return the thick coating of spray 20 μm as qualified.But again verifying or finding that covering effect is bad after post coat experiment, have to stop commercial production, re-start improvement experiment.This front and back possible reason that differs is caused to be: 1) covering effect evaluation relies on visualization merely, there is subjective thought and dominates judged result, easily cause error.2) prior art is when judging, is in any environment, carry out improvement experiment, and it is very large to rely on merely visual judgement to affect by the light environment improving experimental field.
Therefore, the evaluation method of prior art causes the used in amounts returning spray paint that repetition test will be relied on to determine.The uncertainty of this result can cause producing in actual production delayed, production efficiency reduces, production cost to increase etc. problem.Existing method due to relied on artificial subjective factor too much, cause very easily error in judgement, be unfavorable for commercial production, and owing to only having individual data at every turn, cause and have to repeat to do over again to obtain satisfactory result.
Therefore, the detection method that a kind of new coating surface polishing vestige is provided is needed.
Summary of the invention
The object of the present invention is to provide the method for a kind of checking and appraising coating surface polishing vestige.
For achieving the above object, the present invention adopts following technical proposals:
A detection method for coating surface polishing vestige, comprises the following steps:
1) to electrophoresis coating steel plate coating;
2) use sand paper to polish in linear reciprocation mode the part surface of steel plate, steel plate is formed polishing vestige;
3) surface of steel plate is divided into some regions, making each region comprise at least one has polishing vestige position and at least one nothing polishing vestige position;
4) thickness bar is set at least one nothing polishing vestige position described;
5) to the coating of the different amount of each region spraying, wherein at least two coating contents having polishing vestige position to spray meet visual without polishing vestige;
6) thickness bar is taken off, steel plate is toasted;
7) steel plate after visualization baking, selects visual polishing vestige and hides good position;
8) from described visual polishing vestige hide good position select polishing vestige hide complete position;
Color difference meter is used to measure chromatism data, chromatism data without polishing vestige position is set as standard value, measure the chromatism data that described visual polishing vestige hides good position successively, if the chromatism data recorded is with close without the chromatism data at vestige position of polish, namely judge that this position hides complete position as vestige of polishing;
9) measure the thickness that described polishing vestige hides the thickness bar at complete position, complete the detection to coating surface polishing vestige.
According to actual production technique to electrophoresis coating steel plate coating.
Further, the coating of spraying is metal colored paint.Use metal colored paint to be characteristic by its changeable colors along with angle, because polishing position is tiny trench, the arrangement that metallic pigments can not be smooth, causes reflecting effect and normal portions variant, and the numerical value difference of chromatism measurement can be very large, be easier to judgement.
Further, sprayed coating is first spray metal colored paint, dodges after doing, spraying coating varnish.
Further, after taking off thickness bar, at 135-145 DEG C of baking steel plate 15-35min, be preferably at 140 DEG C of baking steel plate 30min.
Further, the steel plate after visualization baking is under mercury vapor lamp or has in the colorimetric lamp box of D65 light source and carry out visual judgement.
Further, film thickness measuring instrument is used to measure the thickness of thickness bar.
Further, described detection method, comprises the following steps:
(1) to electrophoresis coating steel plate coating, dry;
(2) use sand paper to polish in linear reciprocation mode the part surface of steel plate, steel plate is formed polishing vestige, make surface of steel plate be formed with polishing vestige position and without polishing vestige position
(3) steel plate is divided into some lattice from top to bottom, the numbering of lattice is followed successively by A from top to bottom
1to An, n be greater than 3 positive integer;
(4) thickness bar is pasted described without on polishing vestige position;
(5) A is covered
2to A
nlattice, to A
1lattice spraying steel plate coating;
Extremely
Cover A
n-2to A
nlattice, to A
1to A
n-1lattice spraying steel plate coating;
To A
1to A
nlattice spraying steel plate coating;
(6) thickness bar is taken off, steel plate is toasted;
(7) steel plate after visualization baking, selecting visual polishing vestige and hide good lattice, is A
n-x;
(8) use color difference meter to measure chromatism data, the chromatism data without polishing vestige position is set as standard value, measures A
n-xto A
1the chromatism data of lattice, if the chromatism data recorded is close with the chromatism data without vestige position of polishing, namely judges that these lattice are as polishing vestige covering Complete Lattice;
(9) measure the thickness that described polishing vestige hides the thickness bar of Complete Lattice, complete the detection to coating surface polishing vestige.
Beneficial effect of the present invention is as follows:
The present invention covers polishing vestige by the coating regurgitating different amount on a block plate, gradient application is carried out in once testing, obtain many group gradient test results, by can preferred plan be obtained to the contrast of gradient result data, avoid revision test, save the site problems corresponding time, improve work efficiency, save time, material saving.The present invention uses visualization and color difference meter to combine and evaluates covering effect, evaluates improve effect in the mode of data, thus enables polishing vestige improve experiment to rely on no longer merely visual, and evaluation result is more objective, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 shows the part run schematic diagram of method of the present invention.
Embodiment
In order to be illustrated more clearly in the present invention, below in conjunction with preferred embodiment, the present invention is described further.It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive, should not limit the scope of the invention with this below.
Embodiment
As shown in Figure 1, be the part run schematic diagram of method of the present invention.
A detection method for coating surface polishing vestige, comprises the following steps:
Use A4 (20CM*30CM) on-the-spot electrophoresis steel plate by actual production technique coating process, dry 30min at 140 DEG C;
Field polish sand paper is used vertically to polish from top to bottom at the center section of steel plate, reciprocal 10 times;
Use mark stroke lattice from top to bottom, the standardized lattice of every 5cm, totally 6 lattice;
Thickness bar is sticked on the right side of steel plate;
Cover after using tinplate bending, first cover 5 lattice, application first lattice, then cover 4 lattice, first and second lattice of application, by that analogy, enable film thinning successively, topmost is the thickest, and foot is the thinnest, can't see polishing trace until visual at the 4th to the 5th lattice; In the present embodiment, first use the application of metal colored paint, application coating varnish after the dry 5min of sudden strain of a muscle;
Tear thickness and cover bar, at 140 DEG C of baking 20min;
Under mercury vapor lamp or have in the colorimetric lamp box of D65 light source and carry out visual judgement, make marks at the visual lattice that can't see and the N/R lattice of visual color;
Color difference meter is used to measure the chromatism data of the visual lattice that can't see and above lattice, chromatism data without polishing vestige position is set as standard value, if the chromatism data of the lattice recorded is close with the chromatism data without vestige position of polishing, namely judge that these lattice are as polishing vestige covering Complete Lattice;
Use film thickness measuring instrument to measure the thickness data of Complete Lattice, experiment completes.
In the present embodiment, determine the 4th, 5, the chromatism data of 6 lattice, the 5th lattice, the 6th lattice and standard value are close, the film thickness value of record the 5th lattice and the 6th lattice.
Be used in actual process by the film thickness value of the 5th lattice, cover polishing vestige, result shows, covers in technique at 50 times, can realize 42 times and cover completely.The another film thickness value adopting the 6th lattice for 8 times, achieves equally and covers completely.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give exhaustive to all embodiments, every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (6)
1. a detection method for coating surface polishing vestige, is characterized in that, comprise the following steps:
1) to electrophoresis coating steel plate coating;
2) use sand paper to polish in linear reciprocation mode the part surface of steel plate, steel plate is formed polishing vestige;
3) surface of steel plate is divided into some regions, making each region comprise at least one has polishing vestige position and at least one nothing polishing vestige position;
4) thickness bar is set at least one nothing polishing vestige position described;
5) to the coating of the different amount of each region spraying, wherein at least two coating contents having polishing vestige position to spray meet visual without polishing vestige;
6) thickness bar is taken off, steel plate is toasted;
7) steel plate after visualization baking, selects visual polishing vestige and hides good position;
8) from described visual polishing vestige hide good position select polishing vestige hide complete position;
Color difference meter is used to measure chromatism data, chromatism data without polishing vestige position is set as standard value, measure the chromatism data that described visual polishing vestige hides good position successively, if the chromatism data recorded is with close without the chromatism data at vestige position of polish, namely judge that this position hides complete position as vestige of polishing;
9) measure the thickness that described polishing vestige hides the thickness bar at complete position, complete the detection to coating surface polishing vestige.
2. the detection method of a kind of coating surface polishing vestige according to claim 1, it is characterized in that, the coating of spraying is metal colored paint.
3. the detection method of a kind of coating surface polishing vestige according to claim 1 and 2, it is characterized in that, sprayed coating is first spray metal colored paint, dodges after doing, spraying coating varnish.
4. the detection method of a kind of coating surface polishing vestige according to claim 1, is characterized in that, after taking off thickness bar, at 135-145 DEG C of baking steel plate 15-35min, is preferably at 140 DEG C of baking steel plate 30min.
5. the detection method of a kind of coating surface polishing vestige according to claim 1, is characterized in that, the steel plate after visualization baking is under mercury vapor lamp or has in the colorimetric lamp box of D65 light source and carry out visual judgement.
6. the detection method of a kind of coating surface polishing vestige according to claim 1, it is characterized in that, described detection method, comprises the following steps:
(1) to electrophoresis coating steel plate coating, dry;
(2) use sand paper to polish in linear reciprocation mode the part surface of steel plate, steel plate is formed polishing vestige, make surface of steel plate be formed with polishing vestige position and without polishing vestige position
(3) steel plate is divided into some lattice from top to bottom, the numbering of lattice is followed successively by A from top to bottom
1to An, n be greater than 3 positive integer;
(4) thickness bar is pasted described without on polishing vestige position;
(5) A is covered
2to A
nlattice, to A
1lattice spraying steel plate coating;
Extremely
Cover A
n-2to A
nlattice, to A
1to A
n-1lattice spraying steel plate coating;
To A
1to A
nlattice spraying steel plate coating;
(6) thickness bar is taken off, steel plate is toasted;
(7) steel plate after visualization baking, selecting visual polishing vestige and hide good lattice, is A
n-x;
(8) use color difference meter to measure chromatism data, the chromatism data without polishing vestige position is set as standard value, measures A
n-xto A
1the chromatism data of lattice, if the chromatism data recorded is close with the chromatism data without vestige position of polishing, namely judges that these lattice are as polishing vestige covering Complete Lattice;
(9) measure the thickness that described polishing vestige hides the thickness bar of Complete Lattice, complete the detection to coating surface polishing vestige.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690104.4A CN105157643A (en) | 2015-10-22 | 2015-10-22 | Method for detecting polishing trace on painting surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690104.4A CN105157643A (en) | 2015-10-22 | 2015-10-22 | Method for detecting polishing trace on painting surface |
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| Publication Number | Publication Date |
|---|---|
| CN105157643A true CN105157643A (en) | 2015-12-16 |
Family
ID=54798587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510690104.4A Pending CN105157643A (en) | 2015-10-22 | 2015-10-22 | Method for detecting polishing trace on painting surface |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB644181A (en) * | 1948-04-27 | 1950-10-04 | Fairey Aviat Co Ltd | Improvements in or relating to fluid-carrying tanks for vehicles or craft |
| GB1404636A (en) * | 1971-11-17 | 1975-09-03 | Basf Farben & Fasern | Method and apparatus for determining the hiding power of paints |
| CN101548176A (en) * | 2006-12-05 | 2009-09-30 | 纳幕尔杜邦公司 | Method for characterizing hiding of coating compositions and apparatus used therefor |
| CN103278124A (en) * | 2013-05-10 | 2013-09-04 | 京东方科技集团股份有限公司 | Testing method and device for film thickness |
| CN103575733A (en) * | 2013-11-15 | 2014-02-12 | 宁波敏实汽车零部件技术研发有限公司 | Detection method for measuring thicknesses of multiple coating layers |
| CN104345135A (en) * | 2013-12-18 | 2015-02-11 | 浙江吉利控股集团有限公司 | Paint covering power measuring device and paint covering power measuring method |
| CN104458600A (en) * | 2013-09-17 | 2015-03-25 | 立邦涂料（中国）有限公司 | Method for evaluation of the compatibility of aqueous color paste and aqueous paint |
| CN104792291A (en) * | 2015-04-27 | 2015-07-22 | 中国工程物理研究院化工材料研究所 | Method for precisely measuring thickness of thin macromolecular coating layer |
-
2015
- 2015-10-22 CN CN201510690104.4A patent/CN105157643A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB644181A (en) * | 1948-04-27 | 1950-10-04 | Fairey Aviat Co Ltd | Improvements in or relating to fluid-carrying tanks for vehicles or craft |
| GB1404636A (en) * | 1971-11-17 | 1975-09-03 | Basf Farben & Fasern | Method and apparatus for determining the hiding power of paints |
| CN101548176A (en) * | 2006-12-05 | 2009-09-30 | 纳幕尔杜邦公司 | Method for characterizing hiding of coating compositions and apparatus used therefor |
| CN103278124A (en) * | 2013-05-10 | 2013-09-04 | 京东方科技集团股份有限公司 | Testing method and device for film thickness |
| CN104458600A (en) * | 2013-09-17 | 2015-03-25 | 立邦涂料（中国）有限公司 | Method for evaluation of the compatibility of aqueous color paste and aqueous paint |
| CN103575733A (en) * | 2013-11-15 | 2014-02-12 | 宁波敏实汽车零部件技术研发有限公司 | Detection method for measuring thicknesses of multiple coating layers |
| CN104345135A (en) * | 2013-12-18 | 2015-02-11 | 浙江吉利控股集团有限公司 | Paint covering power measuring device and paint covering power measuring method |
| CN104792291A (en) * | 2015-04-27 | 2015-07-22 | 中国工程物理研究院化工材料研究所 | Method for precisely measuring thickness of thin macromolecular coating layer |
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Application publication date: 20151216 |