CN103983580B - A kind of detection method for metal powder coating degree of adhesion - Google Patents
A kind of detection method for metal powder coating degree of adhesion Download PDFInfo
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- CN103983580B CN103983580B CN201410179945.4A CN201410179945A CN103983580B CN 103983580 B CN103983580 B CN 103983580B CN 201410179945 A CN201410179945 A CN 201410179945A CN 103983580 B CN103983580 B CN 103983580B
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Abstract
The present invention relates to the present invention relates to a kind of detection device and its method for metal powder coating degree of adhesion, the detection device includes powder electrostatic gun, dust cabinet and polylith model, and dust gun is connected to storage powder cabinet；The cabinet that dusts, which includes, is provided with model hook on one side non-close end, non-close end, collection powder plate is provided with immediately below model hook, the width of the collection powder plate is more than model width；The detection method includes detecting metal powder coating degree of adhesion in the model under different coating thickness, and is detected to repeatedly reclaiming the metal powder coating degree of adhesion used, so as to obtain the degree of adhesion of the metal powder coating under different working conditions；The above method can obtain the degree of adhesion of metal powder coating under a variety of production technologies that may be used in production process, and production process is controlled according to testing result.
Description
Technical field
The present invention relates to material tests field, especially a kind of detection method for metal powder coating degree of adhesion.
Background technology
Metal powder coating is to be bonded in metallic pigments by Bonding techniques with general powdery paints by metallic pigments
The surface of ordinary powder.Bonding powdery paints due to metal dust and powdery paints is bonded together by physical heating,
If bonding effect is not good, metal powder and powdery paints segregation phenomenon can occur in spraying application for it, cause after spraying drying
Film coated surface irregular colour is even, has the surface defects such as the silver powder particles gathered to produce, influence product appearance and decoration performance.Metal
With the conjugation of powdery paints, adhesion effect can generally observe judgement by electron microscope.But this detection method is not
It is only required with high costs, while being not used to the control of production process.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of detection method of metal powder coating degree of adhesion, it can be in life
The degree of adhesion between metal dust and powdery paints is detected during production.
In order to solve the above technical problems, the present invention relates to a kind of detection method for metal powder coating degree of adhesion, its
Using following detection device：Powder electrostatic gun, dust cabinet and polylith model, and dust gun is connected to storage powder cabinet；The spray
Powder cabinet, which includes, is provided with model hook on one side non-close end, non-close end, collection powder plate, institute are provided with immediately below model hook
The width for stating collection powder plate is more than model width.
The detection method for metal powder coating degree of adhesion includes following detecting step：
1) demarcate coating thickness respectively to polylith model, and it is sprayed using powder electrostatic gun, spraying is completed
It is toasted afterwards；The coating thickness of every piece of model is different each other；
2) using color difference meter distinguish measuring process 1) in spraying obtained by polylith model L values, a values and b values；To wherein it spray
Apply the minimum model of thickness and be set to model Min, using model Min L values, a values and b values as criterion calculation relative value, count respectively
Calculate step 1) in be able in the polylith model of spray treatment, remaining each model is relative with criterion calculation in addition to model Min
△ L values, △ a values and △ b values that value compares, and calculate the relative color differences value △ of remaining each model in addition to model Min
E；
3) quantitative metal powder coating is taken, model A is sprayed by coating thickness of thickness θ, and is completed in spraying
Model A is toasted afterwards；Residual metallic powder is sprayed into completely on the model A after baking；After the completion of spraying, spray is collected
It is scattered to the metal powder coating on collection powder plate, is put into storage powder cabinet during painting；
4) step 3 is used) the middle metal powder coating reclaimed, model B is sprayed by coating thickness of thickness θ, and
Model B is toasted after the completion of spraying；Residual metallic powder is sprayed into completely on the model B after baking, collects spray
It is scattered to the metal powder coating on collection powder plate, is put into storage powder cabinet during painting；
5) repeat step 4) middle operation, model C, model D ... models N are sprayed successively, toasts and sprays place again
Reason, and be collected being scattered in spraying process to the metal powder coating on collection powder plate, until the dusty spray collected is not enough
To be sprayed；
6) measuring process 3 is distinguished using color difference meter) to step 5) in model A obtained by spraying, model B, model C ... samples
Plate N L values, a values and b values；Using step 3) in spraying obtained by model A L values, a values and b values as criterion calculation relative value,
Calculate respectively in model B, model C ... models N, its △ L values, △ a values and △ b value compared with criterion calculation relative value,
And calculate model B, model C ... models N relative color differences value △ E.
The step 2) and step 6) in, calculate relative color differences value △ E and use equation below：
As a modification of the present invention, the step 1) and step 3) in 5), it includes before being sprayed
Detection to the detection device for metal powder coating degree of adhesion, its specific steps include：
1.1) detection powder electrostatic gun shower nozzle does not have powder aggregation；
1.2) detection specimen surface is smooth, and without granular absorption；
The step 1), step 3) in 5), its detection device used is detection approved apparatus.Using above-mentioned step
Suddenly, it can ensure that in detection process, and the spraying of metal powder coating is not by spray gun and model itself affect, so as to obtain for gold
Belong to the optimum detection data of powdery paints degree of adhesion.
As a modification of the present invention, the step 1) and step 3) to the method toasted to model in 5)
It is, model is placed in the environment of 160 to 200 DEG C, baking 10 to 20 minutes is carried out to it.Using above-mentioned design, it can make
The simulation that model realizes sheet fabrication in production process is obtained, so as to the detection data and reality of metal powder coating degree of adhesion
Border creation data is more proper.
As a modification of the present invention, the step 1) and step 3) in 5), the electrostatic electricity of powder electrostatic gun
Pressure is 50 to 60 kilovolts, and the distance between powder electrostatic gun and model are at most 25 millimeters.Using above-mentioned design, it can be true
Protect the good spraying effect of metal powder coating.
As a modification of the present invention, the step 1) in, it is different each other at least provided with 4 pieces of coating thickness
Model, and the coating thickness of multiple models is mutual into arithmetic progression.Using above-mentioned design, it can be sprayed thick by different models
Spend the relation of equal difference each other so that the distribution of its aberration relative value becomes apparent with change.
As a modification of the present invention, the step 1) in, in multiple models, it is micro- that minimum coating thickness is at least 60
Rice.Using above-mentioned design, it, which may be such that, holds suitable thickness as the model of criterion calculation relative value, it is to avoid when thickness is excessively thin
Metal dust viscosity is impacted, and then influences testing result.
As a modification of the present invention, the step 3) in, take metal powder coating to be at least 800 grams；The thickness
Degree θ is at least 80 microns.Using above-mentioned design, quantifying for metal powder coating may insure that it repeatedly reaches that the spraying of demarcation is thick
After degree, while still thering is abundant powdery paints to be used to repeatedly reclaim and use, so as to detect the metal powder coating after recovery use
Degree of adhesion.
Using the above-mentioned detection method for metal powder coating degree of adhesion, it passes through step 1) from step 2) detection is different
Metal powder coating degree of adhesion in model under coating thickness, by step 3) to step 6) for repeatedly reclaiming the metal used
Powdery paints degree of adhesion is detected, so as to obtain the degree of adhesion of the metal powder coating under different working conditions；The above method
The degree of adhesion of metal powder coating under a variety of production technologies that may be used in production process can be obtained, and according to testing result pair
Production process is controlled.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention；
Reference numerals list：
1-powder electrostatic gun, the 2-cabinet that dusts, 3-model, 4-storage powder cabinet, 5-model hook, 6-collection powder plate.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention.It should be noted that the word " preceding " used below in description,
" rear ", "left", "right", "up" and "down" refer to the direction in accompanying drawing, and word " interior " and " outer " refer respectively to direction or remote
From the direction of particular elements geometric center.
A kind of detection method for metal powder coating degree of adhesion, it uses following detection device：Powder electrostatic
Rifle 1, dust cabinet 2 and polylith model 3, and dust gun 1 is connected to storage powder cabinet 4；The cabinet 2 that dusts includes one side non-close
It is provided with end, non-close end immediately below model hook 5, model hook and is provided with collection powder plate 6；The width of the collection powder plate 6 is big
In the width of model 3.
The detection method for metal powder coating degree of adhesion includes following detecting step：
1) 4 pieces of models are demarcated with coating thickness respectively, and it is sprayed using powder electrostatic gun, after the completion of spraying
It is toasted；The coating thickness of every piece of model is respectively 60 microns, 80 microns, 100 microns, 120 microns；
2) using color difference meter distinguish measuring process 1) in spraying obtained by polylith model L values, a values and b values；To wherein it spray
L values, a values and the b values of the model that thickness is 60 microns are applied as criterion calculation relative value, is calculated respectively in remaining polylith model,
Its △ L values, △ a values and △ b value compared with criterion calculation relative value, and calculate the relative color differences value △ of remaining polylith model
E；
3) 1000 grams of metal powder coating is taken, model A is sprayed for coating thickness with 80 microns, and is completed in spraying
Model A is toasted afterwards；Residual metallic powder is sprayed into completely on the model A after baking；After the completion of spraying, spray is collected
It is scattered to the metal powder coating on collection powder plate, is put into storage powder cabinet during painting；
4) step 3 is used) the middle metal powder coating reclaimed, model B is sprayed for coating thickness with 80 microns, and
Model B is toasted after the completion of spraying；Residual metallic powder is sprayed into completely on the model B after baking, collects spray
It is scattered to the metal powder coating on collection powder plate, is put into storage powder cabinet during painting；
5) step 4 is used) the middle metal powder coating reclaimed, model C is sprayed for coating thickness with 80 microns, and
Model C is toasted after the completion of spraying；
6) measuring process 3 is distinguished using color difference meter) to step 5) in model A obtained by spraying, model B, model C L values,
A values and b values；Using step 3) in spraying obtained by model Min L values, a values and b values as criterion calculation relative value, calculate respectively
In model B and model C, its △ L values, △ a values and △ b value compared with criterion calculation relative value, and calculate model B and model
C relative color differences value △ E；
The step 2) and step 6) in, calculate relative color differences value △ E and use equation below：
As a modification of the present invention, the step 1) and step 3) in 5), it includes before being sprayed
Detection to the detection device for metal powder coating degree of adhesion, its specific steps include：
1.1) detection powder electrostatic gun shower nozzle does not have powder aggregation；
1.2) detection specimen surface is smooth, and without granular absorption；
The step 1), step 3) in 5), its detection device used is detection approved apparatus.Using above-mentioned step
Suddenly, it can ensure that in detection process, and the spraying of metal powder coating is not by spray gun and model itself affect, so as to obtain for gold
Belong to the optimum detection data of powdery paints degree of adhesion.
As a modification of the present invention, the step 1) and step 3) to the method toasted to model in 5)
It is, model is placed in the environment of 180 DEG C, baking 15 minutes is carried out to it.Using above-mentioned design, it may be such that model is realized
The simulation of sheet fabrication in production process, so as to the detection data and actual production data of metal powder coating degree of adhesion
It is more proper.
As a modification of the present invention, the step 1) and step 3) in 5), the electrostatic electricity of powder electrostatic gun
Pressure is 60 kilovolts, and the distance between powder electrostatic gun and model are 20 millimeters.Using above-mentioned design, it can ensure that metal powder
The good spraying effect of last coating.
Using the above-mentioned detection method for metal powder coating degree of adhesion, it passes through step 1) from step 2) detection is different
Metal powder coating degree of adhesion in model under coating thickness, by step 3) to step 6) for repeatedly reclaiming the metal used
Powdery paints degree of adhesion is detected, so as to obtain the degree of adhesion of the metal powder coating under different working conditions；The above method
The degree of adhesion of metal powder coating under a variety of production technologies that may be used in production process can be obtained, and according to testing result pair
Production process is controlled.
Claims (7)
1. a kind of detection method for metal powder coating degree of adhesion, it is characterised in that described viscous for metal powder coating
Right detection method uses following detection device：Powder electrostatic gun, dust cabinet and polylith model, dust gun connection
To storage powder cabinet；The cabinet that dusts, which includes, is provided with model hook on one side non-close end, non-close end, immediately below model hook
Collection powder plate is provided with, the width of the collection powder plate is more than model width；
The detection method for metal powder coating degree of adhesion includes following detecting step：
1) demarcate coating thickness respectively to polylith model, and it is sprayed using powder electrostatic gun, it is right after the completion of spraying
It is toasted；The coating thickness of every piece of model is different each other；
2) using color difference meter distinguish measuring process 1) in spraying obtained by polylith model L values, a values and b values；Thickness will wherein be sprayed
The minimum model of degree is set to model Min, and using model Min L values, a values and b values as criterion calculation relative value, step is calculated respectively
It is rapid 1) in be able in the polylith model of spray treatment, remaining each model and criterion calculation relative value phase in addition to model Min
Δ L values, Δ a values and the Δ b values compared, and calculate the relative color differences value Δ E of remaining each model in addition to model Min；
3) quantitative metal powder coating is taken, model Min is sprayed by coating thickness of thickness θ, and after the completion of spraying
Model A is toasted；Residual metallic powder is sprayed into completely on the model A after baking；After the completion of spraying, spraying is collected
During be scattered to collection powder plate on metal powder coating, be put into storage powder cabinet in；
4) step 3 is used) the middle metal powder coating reclaimed, model B is sprayed by coating thickness of thickness θ, and in spray
Model B is toasted after the completion of painting；Residual metallic powder is sprayed into completely on the model B after baking, collected spray coated
It is scattered to the metal powder coating on collection powder plate, is put into storage powder cabinet in journey；
5) repeat step 4) in operate, model C, model D ... models N are sprayed successively, toasted and spray treatment again, and
It is collected being scattered in spraying process to the metal powder coating on collection powder plate, until the dusty spray collected is not enough to carry out
Spraying；
6) measuring process 3 is distinguished using color difference meter) to step 5) in model A obtained by spraying, model B, model C ... models N
L values, a values and b values；Using step 3) in spraying obtained by model A L values, a values and b values be used as criterion calculation relative value, distinguish
Calculate in model B, model C ... models N, its Δ L values, Δ a values and Δ b value compared with criterion calculation relative value, and count
Calculate model B, model C ... models N relative color differences value Δ E.
2. according to the detection method for metal powder coating degree of adhesion described in claim 1, it is characterised in that the step
1) and step 3) in 5), it includes to the detection device for metal powder coating degree of adhesion before being sprayed
Detection, its specific steps include：
1.1) detection powder electrostatic gun shower nozzle does not have powder aggregation；
1.2) detection specimen surface is smooth, and without granular absorption；
The step 1), step 3) in 5), its detection device used is detection approved apparatus.
3. according to the detection method for metal powder coating degree of adhesion described in claim 1 or 2, it is characterised in that described
Step 1) and step 3) be to the method toasted to model in 5), model is placed in the environment of 160 to 200 DEG C,
Baking 10 to 20 minutes is carried out to it.
4. according to the detection method for metal powder coating degree of adhesion described in claim 3, it is characterised in that the step
1) and step 3) in 5), the electrostatic potential of powder electrostatic gun is 50 to 60 kilovolts, powder electrostatic gun and model it
Between distance be at most 25 millimeters.
5. according to the detection method for metal powder coating degree of adhesion described in claim 4, it is characterised in that the step
1) in, at least provided with 4 pieces of coating thickness different model each other, and multiple models coating thickness each other into equal difference
Ordered series of numbers.
6. according to the detection method for metal powder coating degree of adhesion described in claim 5, it is characterised in that the step
1) in, model Min coating thickness is at least 60 microns.
7. according to the detection method for metal powder coating degree of adhesion described in claim 6, it is characterised in that the step
3) in, metal powder coating is taken to be at least 800 grams；The thickness θ is at least 80 microns.
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| CN114384022B (en) * | 2021-12-23 | 2024-08-27 | 老虎表面技术新材料（苏州）有限公司 | Method for testing application stability of powder coating composition in electrostatic spraying process |
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Address after: No. 82, Huada Road, Jiangsu Yangzi River International Chemical Industrial Park, Jiangsu, Suzhou, Jiangsu Patentee after: Jiangnan powder coating (Zhangjiagang) Co., Ltd. Address before: No. 82, Huada Road, Jiangsu Yangzi River International Chemical Industrial Park, Jiangsu, Suzhou, Jiangsu Patentee before: Zhangjiagang Jiangnan Powder Coating Co., Ltd. |