CN103983580A - Detection device and method for adhesion degrees of metal powder coating - Google Patents
Detection device and method for adhesion degrees of metal powder coating Download PDFInfo
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- CN103983580A CN103983580A CN201410179945.4A CN201410179945A CN103983580A CN 103983580 A CN103983580 A CN 103983580A CN 201410179945 A CN201410179945 A CN 201410179945A CN 103983580 A CN103983580 A CN 103983580A
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Abstract
The invention relates to a detection device and method for adhesion degrees of a metal powder coating. The detection device comprises a powder electrostatic spraying gun, a powder spraying cabinet and a plurality of sample plates, wherein the powder spraying gun is connected to a powder storage cabinet; the powder spraying cabinet comprises one non-closed end, and the non-closed end is provided with a sample plate hook; a powder collecting plate is arranged just below the sample plate hook, and the width of the powder collecting plate is greater than that of the sample plates. The detection method comprises detection of the adhesion degrees of the metal powder coating in the sample plates with different spraying thicknesses, and detection of the adhesion degree of a metal powder coating recycled and reused for multiple times, so as to obtain the adhesion degrees of the metal powder coating under different production conditions. The method can obtain the adhesion degrees of the metal powder coating under various production technologies possibly adopted in the production process, and controls the production process according to the detection results.
Description
Technical field
The present invention relates to material tests field, especially a kind of checkout equipment for metal powder coating degree of adhesion and method thereof.
Background technology
Metal powder coating is the surface that by Bonding technique, metallic pigments is bonded in to ordinary powder by metallic pigments and general powdery paints.Bonding powdery paints is because metal powder and powdery paints are to be bonded together by physical heating, if bonding effect is not good, in the time of spraying application, can there is metal powder and powdery paints segregation phenomenon in it, cause the film coated surface irregular colour after spraying is dried even, there are the surface imperfection such as the silver powder particles that gathers to produce, affect product appearance and decorate properties.The conjugation of metal and powdery paints, adhesion effect can be carried out observe and decide by electron microscope conventionally.But this detection method is not only required with high costs, simultaneously cannot be for the production of the control of process.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of checkout equipment and method thereof of metal powder coating degree of adhesion, and it can detect the degree of adhesion between metal powder and powdery paints in process of production
For solving the problems of the technologies described above, the present invention relates to a kind of checkout equipment for metal powder coating degree of adhesion, it comprises powder static electricity spray gun, dust cabinet and polylith model, dust gun is connected to storage powder cabinet; The described cabinet that dusts includes the non-blind end of one side, is provided with model hook on non-blind end, is provided with collection powder plate under model hook, and the width of described collection powder plate is greater than model width.
Detection method based on the above-mentioned checkout equipment for metal powder coating degree of adhesion comprises following detecting step:
1) polylith model is demarcated respectively to coating thickness, and adopt powder static electricity spray gun to spray it, sprayed and rear it has been toasted; The coating thickness of every model is different each other;
2) adopt respectively measuring process 1 of color difference meter) in L value, a value and the b value of polylith model of spraying gained; Using L value, a value and the b value of the model of coating thickness minimum wherein as criterion calculation relative value, calculate respectively in all the other polylith models, its △ L value of comparing with criterion calculation relative value, △ a value and △ b value, and calculate the relative value of chromatism △ E of all the other polylith models;
3) get quantitative metal powder coating, taking thickness A as coating thickness, model is sprayed, and after spraying completes, model is toasted; Residual metallic powder is sprayed on the model after baking completely; After having sprayed, collect the metal powder coating being scattered to collection powder plate in spraying process, inserted in storage powder cabinet;
4) adopt the metal powder coating reclaiming in step 3), taking thickness A as coating thickness, new model is sprayed, and after spraying completes, model is toasted; Residual metallic powder is sprayed on the model after baking completely, collects the metal powder coating being scattered to collection powder plate in spraying process, inserted in storage powder cabinet;
5) repeating step 4) middle operation, until the dusty spray of collecting is not enough to spray;
6) adopt respectively measuring process 3 of color difference meter) to the L value, a value and the b value that spray the polylith model of gained in step 5); Using L value, a value and the b value of model that sprays gained in step 3) as criterion calculation relative value, calculate respectively in all the other polylith models, its △ L value of comparing with criterion calculation relative value, △ a value and △ b value, and calculate the relative value of chromatism △ E of all the other polylith models;
Described step 2) with step 6) in, calculate relative value of chromatism △ E and adopt following formula:
As a modification of the present invention, described step 1) and step 3) to 5) in, it all includes the detection to the checkout equipment for metal powder coating degree of adhesion before spraying, and its concrete steps comprise:
1.1) detect powder static electricity spray gun spray nozzle and there is no powders;
1.2) detect model surface smoothing, and adsorb without particle;
Described step 1), step 3) to 5) in, its checkout equipment adopting is detection approved apparatus.Adopt above-mentioned steps, it can guarantee in testing process, and the spraying of metal powder coating is not affected by spray gun and model self, thereby acquisition is for the optimum detection data of metal powder coating degree of adhesion.
As a modification of the present invention, described step 1) and step 3) to 5) in method that model is toasted be, model is placed under the environment of 160 to 200 DEG C, it is toasted 10 to 20 minutes.Adopt above-mentioned design, it can make model realize the simulation of sheet material processing in production run, thereby makes detection data and actual production data to metal powder coating degree of adhesion more proper.
As a modification of the present invention, described step 1) and step 3) to 5) in, the electrostatic potential of powder static electricity spray gun is 50 to 60 kilovolts, and the distance between powder static electricity spray gun and model is at most 25 millimeters.Adopt above-mentioned design, it can guarantee the good spraying effect of metal powder coating.
As a modification of the present invention, in described step 1), be at least provided with 4 coating thickness different model each other, and the coating thickness of multiple models becomes arithmetic progression each other.Adopt above-mentioned design, it can be by the different model coating thickness relation of equal difference each other, makes the distribution of its aberration relative value more obvious with variation.
As a modification of the present invention, in described step 1), in multiple models, minimum coating thickness is at least 60 microns.Adopt above-mentioned design, it can make to hold suitable thickness as the model of criterion calculation relative value, avoids thickness to cross when thin metal powder viscosity is impacted, and then affect testing result.
As a modification of the present invention, in described step 3), the metal powder coating of getting is at least 800 grams; Described thickness A is at least 80 microns.Adopt above-mentioned design, quantitatively can guaranteeing after its coating thickness that repeatedly reaches demarcation of metal powder coating still has abundant powdery paints for repeatedly reclaiming use simultaneously, thereby detects the degree of adhesion that reclaims the metal powder coating after using.
Adopt the above-mentioned checkout equipment for metal powder coating degree of adhesion and method thereof, it is by step 1) and step 2) detect metal powder coating degree of adhesion in the model under different coating thickness, detect for the metal powder coating degree of adhesion that repeatedly reclaims use by step 3) to step 6), thereby obtain the degree of adhesion of the metal powder coating under different working conditions; Said method can obtain the degree of adhesion of metal powder coating under the multiple production technology that may adopt in production run, and according to testing result, production run is controlled.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention;
Reference numerals list:
1-powder static electricity spray gun, the 2-cabinet that dusts, 3-model, 4-storage powder cabinet, 5-model hook, 6-collection powder plate.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand following embodiment and only be not used in and limit the scope of the invention for the present invention is described.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometric center.
A kind of checkout equipment for metal powder coating degree of adhesion as shown in Figure 1, it comprises powder static electricity spray gun 1, dust cabinet 2 and polylith model 3, dust gun 1 is connected to storage powder cabinet 4; The described cabinet 2 that dusts includes the non-blind end of one side, is provided with model hook 5 on non-blind end, is provided with collection powder plate 6 under model hook, and the width of described collection powder plate 6 is greater than model 3 width.
Detection method based on the above-mentioned checkout equipment for metal powder coating degree of adhesion comprises following detecting step:
1) 4 models are demarcated respectively to coating thickness, and adopt powder static electricity spray gun to spray it, sprayed and rear it has been toasted; The coating thickness of every model is respectively 60 microns, 80 microns, 100 microns, 120 microns;
2) adopt respectively measuring process 1 of color difference meter) in L value, a value and the b value of polylith model of spraying gained; Be that L value, a value and the b value of the model of 60 microns is as criterion calculation relative value using coating thickness wherein, calculate respectively in all the other polylith models, its △ L value of comparing with criterion calculation relative value, △ a value and △ b value, and calculate the relative value of chromatism △ E of all the other polylith models;
3) get 1000 grams of metal powder coatings, taking 80 microns as coating thickness, model is sprayed, and after spraying completes, model is toasted, this model is labeled as to the first spray proof; Residual metallic powder is sprayed on the model after baking completely; After having sprayed, collect the metal powder coating being scattered to collection powder plate in spraying process, inserted in storage powder cabinet;
4) adopt the metal powder coating reclaiming in step 3), taking 80 microns as coating thickness, new model is sprayed, and after spraying completes, model is toasted, this model is labeled as to the second spray proof; Residual metallic powder is sprayed on the model after baking completely, collects the metal powder coating being scattered to collection powder plate in spraying process, inserted in storage powder cabinet;
5) adopt the metal powder coating reclaiming in step 4), taking 80 microns as coating thickness, new model is sprayed, and after spraying completes, model is toasted, this model is labeled as to the 3rd spray proof
6) adopt respectively measuring process 3 of color difference meter) to the L value, a value and the b value that spray the polylith model of gained in step 5); Using L value, a value and the b value of model that sprays gained in step 3) as criterion calculation relative value, calculate respectively in all the other polylith models, its △ L value of comparing with criterion calculation relative value, △ a value and △ b value, and calculate the relative value of chromatism △ E of all the other polylith models;
Described step 2) with step 6) in, calculate relative value of chromatism △ E and adopt following formula:
As a modification of the present invention, described step 1) and step 3) to 5) in, it all includes the detection to the checkout equipment for metal powder coating degree of adhesion before spraying, and its concrete steps comprise:
1.1) detect powder static electricity spray gun spray nozzle and there is no powders;
1.2) detect model surface smoothing, and adsorb without particle;
Described step 1), step 3) to 5) in, its checkout equipment adopting is detection approved apparatus.Adopt above-mentioned steps, it can guarantee in testing process, and the spraying of metal powder coating is not affected by spray gun and model self, thereby acquisition is for the optimum detection data of metal powder coating degree of adhesion.
As a modification of the present invention, described step 1) and step 3) to 5) in method that model is toasted be, model is placed under the environment of 180 DEG C, it is toasted 15 minutes.Adopt above-mentioned design, it can make model realize the simulation of sheet material processing in production run, thereby makes detection data and actual production data to metal powder coating degree of adhesion more proper.
As a modification of the present invention, described step 1) and step 3) to 5) in, the electrostatic potential of powder static electricity spray gun is 60 kilovolts, and the distance between powder static electricity spray gun and model is 20 millimeters.Adopt above-mentioned design, it can guarantee the good spraying effect of metal powder coating.
Adopt the above-mentioned checkout equipment for metal powder coating degree of adhesion and method thereof, it is by step 1) and step 2) detect metal powder coating degree of adhesion in the model under different coating thickness, detect for the metal powder coating degree of adhesion that repeatedly reclaims use by step 3) to step 6), thereby obtain the degree of adhesion of metal powder coating under different working conditions; Said method can obtain the degree of adhesion of metal powder coating under the multiple production technology that may adopt in production run, and according to testing result, production run is controlled.
Claims (8)
1. for a checkout equipment for metal powder coating degree of adhesion, it is characterized in that, the described checkout equipment for metal powder coating degree of adhesion comprises powder static electricity spray gun, dust cabinet and polylith model, and dust gun is connected to storage powder cabinet; The described cabinet that dusts includes the non-blind end of one side, is provided with model hook on non-blind end, is provided with collection powder plate under model hook, and the width of described collection powder plate is greater than model width.
2. for a detection method for metal powder coating degree of adhesion, it is characterized in that, the described detection method for metal powder coating degree of adhesion comprises following detecting step:
1) polylith model is demarcated respectively to coating thickness, and adopt powder static electricity spray gun to spray it, sprayed and rear it has been toasted; The coating thickness of every model is different each other;
2) adopt respectively measuring process 1 of color difference meter) in L value, a value and the b value of polylith model of spraying gained; Using L value, a value and the b value of the model of coating thickness minimum wherein as criterion calculation relative value, calculate respectively in all the other polylith models, its △ L value of comparing with criterion calculation relative value, △ a value and △ b value, and calculate the relative value of chromatism △ E of all the other polylith models;
3) get quantitative metal powder coating, taking thickness A as coating thickness, model is sprayed, and after spraying completes, model is toasted; Residual metallic powder is sprayed on the model after baking completely; After having sprayed, collect the metal powder coating being scattered to collection powder plate in spraying process, inserted in storage powder cabinet;
4) adopt the metal powder coating reclaiming in step 3), taking thickness A as coating thickness, new model is sprayed, and after spraying completes, model is toasted; Residual metallic powder is sprayed on the model after baking completely, collects the metal powder coating being scattered to collection powder plate in spraying process, inserted in storage powder cabinet;
5) repeating step 4) middle operation, until the dusty spray of collecting is not enough to spray;
6) adopt respectively measuring process 3 of color difference meter) to the L value, a value and the b value that spray the polylith model of gained in step 5); Using L value, a value and the b value of model that sprays gained in step 3) as criterion calculation relative value, calculate respectively in all the other polylith models, its △ L value of comparing with criterion calculation relative value, △ a value and △ b value, and calculate the relative value of chromatism △ E of all the other polylith models.
3. according to the detection method for metal powder degree of adhesion claimed in claim 2, it is characterized in that, described step 1) and step 3) to 5) in, it all includes the detection to the checkout equipment for metal powder coating degree of adhesion before spraying, and its concrete steps comprise:
1.1) detect powder static electricity spray gun spray nozzle and there is no powders;
1.2) detect model surface smoothing, and adsorb without particle;
Described step 1), step 3) to 5) in, its checkout equipment adopting is detection approved apparatus.
4. according to the detection method for metal powder degree of adhesion described in claim 2 or 3, it is characterized in that, described step 1) and step 3) to 5) in method that model is toasted be, model is placed under the environment of 160 to 200 DEG C, it is toasted 10 to 20 minutes.
5. according to the detection method for metal powder degree of adhesion claimed in claim 4, it is characterized in that, described step 1) and step 3) to 5) in, the electrostatic potential of powder static electricity spray gun is 50 to 60 kilovolts, and the distance between powder static electricity spray gun and model is at most 25 millimeters.
6. according to the detection method for metal powder degree of adhesion claimed in claim 5, it is characterized in that, in described step 1), be at least provided with 4 coating thickness different model each other, and the coating thickness of multiple models becomes arithmetic progression each other.
7. according to the detection method for metal powder degree of adhesion claimed in claim 6, it is characterized in that, in described step 1), in multiple models, minimum coating thickness is at least 60 microns.
8. according to the detection method for metal powder degree of adhesion claimed in claim 6, it is characterized in that, in described step 3), the metal powder coating of getting is at least 800 grams; Described thickness A is at least 80 microns.
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Cited By (2)
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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. |
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