CN105821464A - Electrophoresis test apparatus and bath blending process using same - Google Patents
Electrophoresis test apparatus and bath blending process using same Download PDFInfo
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- CN105821464A CN105821464A CN201610013771.3A CN201610013771A CN105821464A CN 105821464 A CN105821464 A CN 105821464A CN 201610013771 A CN201610013771 A CN 201610013771A CN 105821464 A CN105821464 A CN 105821464A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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Abstract
The invention discloses an electrophoresis test apparatus and a bath blending process using the same. The process comprises the following steps: sampling of solutions respectively in a new bath and in an old bath; mixing; detection of parameters of mixed bath solutions; loading of the mixed bath solutions onto the electrophoresis test apparatus for detection of the physical property parameters of an electrophoresis paint film; etc. According to the invention, small-scale small-dosage test before normal bath blending is carried out by using the electrophoresis test apparatus; the usage amounts of the solutions in the new bath and in the old bath during bath blending test are small; preparation is rapid; the solutions of a variety of ratios can be used for the bath blending test; if test results cannot meet requirements in examination, ratios can be repeatedly changed for preparation of the solutions until process requirements are met; after each performance meet requirements, the solutions are added into a large bath in proportion for normal production; and thus, the problem of waste of cost due to batch quality accidents probably caused by direct bath blending in the prior art is overcome, and production risks are reduced.
Description
Technical field
The present invention relates to a kind of painting dressing automobiles assay device and utilize the application testing and measuring technology of this device, more specifically, it relates to a kind of electrophoresis tests device and utilize the mixed groove technique of this device.
Background technology
Cathode electro-coating is a coating process critically important during car coating produces, and the vehicle body through pre-treatment is driven in the water soluble paint in ability cathode electrophoresis groove by conveying equipment.Under the effect of DC electric field, resin, face base material in water soluble paint uniformly separate out on negative electrode bodywork surface, the water-fast paint film of formation of deposits, and ability cathode electrophoresis includes electrophoresis, electro-deposition, electric osmose, electrolysis Four processes.In electrophoretic painting production process, along with persistently carrying out of electro-chemical reaction, tank liquor is constantly lost and quality deterioration, gradually has a negative impact final products performance, for needing in this production process to be periodically updated the old tank liquor degenerated, this renewal process is realized by the displacement of mixed groove.The electrophoresis that existing production scene is commonly used mixes groove method and is: produces according to order of classes or grades at school on the same day and terminates to be sampled old tank liquor composition analyzing, calculate and produced the resin and pigment consumed the same day, groove ratio is mixed further according to the old and new's electrophoretic paint material, directly with addition of new batch of graining paste, resin and solvent etc., directly feed in electrophoresis tank and then remake tank liquor analysis, as long as parameter meets technological requirement, the production of lower order of classes or grades at school can be carried out, on First vehicle body, hang ED with line during production and detect plate, go out groove post-drying and detect its paint film property.But after the method has following defects that mixed groove has adjusted, the physical and chemical parameter of mixed groove itself often easily reaches technological requirement, but, nonetheless, due to reasons such as the old tank liquor of electrophoresis are continually changing, the paint film appearance produced in actual production also can produce some changes, form some defects, as paint film is coarse, pin hole, piebaldism, shrinkage cavity, loss of gloss etc., and now produce and carried out, when the paint film property being detected the tank liquor generation after plate finds mixed groove by the ED on the first chassis is the most up to standard, the existing considerable defective products that there is drawbacks described above produces, thus cause quality of lot accident.The patent of invention of Publication No. CN1958174A discloses a kind of manufacturing technique for painting dressing automobiles on May 9th, 2007, wash operation including pre-cleaning operation, pre-degreasing process, degreasing process, 1 st pure water, table adjusts that operation, phosphatization operation, second pure water wash operation, passivation procedure, deionization washing step, electrophoresis operation, UF liquid washes operation, secondary UF liquid washes operation, secondary deionized water washes operation, it is characterized in that, in described production technology, use the PK double-strand calabash being provided with 3.5-4.5 m/min；When relating to degreasing process, phosphatization operation and electrophoresis operation, use the cell body adapting to this operation, make the average productive temp of single vehicle rise to 2.5-4.5 minute/.The present invention to solve in streamline manufacturing technique for painting dressing, the technical problem that can not produce in enormous quantities, and a kind of painting dressing automobiles pre-treatment, electrophoresis production technology are provided, he has small investment, floor space is little, operation and maintenance cost is few, process selectivity is strong, improve the advantages such as product quality.But this technique is not related to the solution of relevant issues during mixed groove technique and mixed groove.
Summary of the invention
Existing electrophoresis mixes groove technique and there is leak on quality control, easily causes quality of lot accident, for overcoming this defect, the invention provides a kind of electrophoresis tests device that can more effectively control painting dressing automobiles quality and utilizes the mixed groove technique of this device.
The technical scheme is that a kind of electrophoresis tests device, including electrophoresis tests sulculus, voltage stabilizing adjustable DC power supply and temp. controllable agitator, electrophoresis tests sulculus includes negative electrode, electrophoresis plate and anode, electrophoresis tests sulculus is placed on temp. controllable agitator, and negative electrode, anode electrically connect with voltage stabilizing adjustable DC power supply.This device can provide out process environments during electrophoresis liquid configuration in actual production, it is simple to carries out small lot electrophoresis liquid configuration processing simulation, so repeatedly can debug with production facility, it is to avoid a large amount of producer goods and the waste of the energy.
As preferably, temp. controllable agitator is provided with temperature adjustment knob and speed adjusting knob.Temp. controllable agitator has temperature regulation and mixing speed regulatory function, and by tachometer value and the temperature value of Adjustment Tests, paint fluid circulation and the heat-exchange system that can simulate electrophoresis tank in actual production regulate flowing velocity and the temperature painting liquid.
As preferably, voltage stabilizing adjustable DC power supply is provided with voltage-regulation knob and current adjusting knob.On voltage stabilizing adjustable DC power supply, voltage-regulation knob and current adjusting knob are set, for magnitude of voltage or the current value of Adjustment Tests, one section of low-voltage and the two-stage nitration high voltage of electrophoresis tank in actual production can be simulated.
As preferably, annode area and cathode area ultimate ratio are 1:5～1:3.Annode area on productive power swimming groove also in the range of 1:5～1:3, is therefore also adopted by the cathode and anode allocation ratio relation of same range with cathode area ultimate ratio at electrophoresis tests device, and test data is closer to actual production.
A kind of mixed groove technique utilizing described electrophoresis tests device, comprises the steps:
A. take old tank liquor in the mixed groove ratio of test and newly join each portion of tank liquor and be hybridly prepared into electrophoretic paint, and detecting mixing bath parameters；
B. the electrophoretic paint of preparation is injected in electrophoresis tests sulculus, electrophoresis plate is hung on negative electrode and immerses electrophoretic paint；
C. temp. controllable agitator is started；
D. connect voltage stabilizing adjustable DC power supply, by voltage-regulation knob, voltage is slowly raised to 58～62V from 0V in 14～16 seconds；Again voltage it was slowly raised to 168～172V from 58～62V in 14～16 seconds and keeps final voltage 148～152 seconds；
E. take out electrophoresis plate and rinse dewatering post-drying, the physical function parameter of electrodeposited paint film on detection electrophoresis plate, as met technological requirement, then by this proportioning, the electrophoresis tank in producing is fed；As being unsatisfactory for technological requirement, then change mixed groove than test preparation again until meeting technological requirement.
This technology utilization electrophoresis tests device formally mixes the little scope before groove, low dose of test, in mixed groove test, tank liquor consumption new, old is little, preparation is quickly, available multiple ratio mixes groove test, result of the test through inspection do not reach require time, can the most more rescale and heavily join, until meeting technological requirement, after guaranteeing that properties reaches requirement, just formal proportioning of pressing on vat throws groove, formally produce, the quality of lot accident that prior art can be avoided may to cause after directly mixing groove is thus brought and cost waste, reduce production risk.
As preferably, the temperature of temp. controllable agitator controls at 25～27 DEG C, and mixing speed is 2000～2200 revs/min.25～27 DEG C of technological requirements meeting actual production, mixing speed is that the tank liquor flow velocity caused when 2000～2200 revs/min tank liquor the newest, old quickly mixes, and after can ensure that again mixing, the internal physicochemical property of tank liquor is homogeneous.
As preferably, in step D, electric current controls 0.1～0.15A.Electric current controls, 0.1～0.15A, to meet the manufacturing technique requirent of electrophoretic current 10A/M2, meet production actual requirement, it is ensured that this method has actual operability.
As preferably, mix bath parameters described in step A and include pH value, electrical conductivity, solid part, pigment, acid milliequivalent MEQ-ACID, alkali milliequivalent MEQ-BASE, solvent BC, solvent PM and total solvent content.The service behaviour that the acquisition of these parameters contributes to comprehensively, assessment mixes tank liquor exactly, direction is guided in the preparation improvement offer for mixing tank liquor.
As preferably, the physical function parameter of electrodeposited paint film described in step E includes outward appearance, shrinkage cavity grade, adhesive force, hardness, impact resistance, roughness, throwing power.These parameters can directly reflect the quality generating product of mixing tank liquor, contributes to more comprehensively, assesses more accurately mixed effect and the service behaviour of mixing tank liquor.
The invention has the beneficial effects as follows:
Avoid quality of lot accident, reduce production risk.The present invention utilizes electrophoresis tests device, before formal mixed groove produces, replace the little scope of tank liquor, low dose of test by a certain percentage, after guaranteeing that properties reaches requirement, just on vat, throw groove by proportioning formally to produce, the quality of lot accident being likely to occur after so can avoiding directly mixing groove by existing technique, reduces risk quality accident occur.
Accompanying drawing explanation
Fig. 1 is a kind of process chart of the present invention；
Fig. 2 is a kind of structural representation of electrophoresis tests device used in the present invention；
Fig. 3 is a kind of form of record mixing bath parameters in the present invention；
A kind of form of the electrodeposited paint film parameter that Fig. 4 is generated by tank liquor after the mixed groove of record in the present invention.
In figure, 1-negative electrode, 2-electrophoresis plate, 3-electrophoretic paint, 4-electrophoresis tests sulculus, 5-anode, 6-voltage stabilizing adjustable DC power supply, 7-voltage-regulation knob, 8-positive pole, 9-current adjusting knob, 10-negative pole, 11-temperature adjustment knob, 12-temp. controllable agitator, 13-speed adjusting knob.
Detailed description of the invention
The invention will be further described for specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1:
As shown in Figure 1 and Figure 2, a kind of electrophoresis tests device, including: electrophoresis tests sulculus 4, voltage stabilizing adjustable DC power supply 6 and temp. controllable agitator 12, electrophoresis tests sulculus 4 includes negative electrode 1, electrophoresis plate 2 and anode 5, anode 5 area and negative electrode 1 area ultimate ratio are 1:4, electrophoresis tests sulculus 4 is used for containing electrophoretic paint 3, and voltage stabilizing adjustable DC power supply 6 is provided with positive pole 8, negative pole 10, voltage-regulation knob 7, current adjusting knob 9 etc.；Temp. controllable agitator 12 is provided with speed adjusting knob 13, temperature adjustment knob 11 etc..Electrophoresis tests sulculus 4 is stably placed on temp. controllable agitator 12, and voltage stabilizing adjustable DC power supply 6 is placed on its side same plane；Utilizing cable that negative electrode 1 is connected with negative pole 10, anode 5 is connected with positive pole 8.
A kind of mixed groove technique utilizing electrophoresis tests device, comprises the steps:
A. determining that the test of 10% mixes groove ratio, mix groove ratio according to this test and take old tank liquor with beaker respectively and newly join each portion of tank liquor, old volume of bath solution is new volume of bath solution 9 times；
B. by two kinds of tank liquor mixing, being sufficiently stirred for temp. controllable agitator 12, mixing speed is 2000 revs/min, is configured to electrophoretic paint 3, and the electrophoretic paint this configured is designated as No. 1 sample；
C. detection mixing bath parameters, surveyed reference record is in table as shown in Figure 3, and the parameter that need to survey includes pH value, electrical conductivity, solid part, pigment, acid milliequivalent MEQ-ACID, alkali milliequivalent MEQ-BASE, solvent BC, solvent PM and total solvent content；
D. being injected by the electrophoretic paint 3 of above-mentioned preparation in the electrophoresis tests sulculus 4 of electrophoresis tests device, liquid level is from negative electrode 1 contact rod 20mm；
E. electrophoresis plate 2, hang on negative electrode 1；
F. open the on and off switch of temp. controllable agitator 12, rotate 12 to 26 DEG C of temp. controllable agitator, select agitation as appropriate speed, it is ensured that electrophoretic paint 3 directed flow is good；
G. soft start, connects voltage stabilizing adjustable DC power supply 6, rotational voltage adjusting knob 7, manually voltage is slowly raised to 60V from 0V, and pressure rising time is 15 seconds；
H. rotational voltage adjusting knob 7, is slowly raised to 170V voltage from 60V, and pressure rising time is 15 seconds, then keeps voltage 170V constant 150 seconds, and electric current is 0.1A, meets the manufacturing technique requirent of electrophoretic current 10A/M2；
I. close down temp. controllable agitator 12, cut off voltage stabilizing adjustable DC power supply 6；
J. take out electrophoresis plate 2, after deionized water rinsing dewatering, put in the constant temperature oven that temperature is 173～176 DEG C and toast 20 minutes；
K. on detection electrophoresis plate 2, whether the physical function parameter of electrodeposited paint film meets technological requirement, surveyed reference record is in table as shown in Figure 4, the parameter that need to survey includes outward appearance, shrinkage cavity grade, adhesive force, hardness, impact resistance, roughness, throwing power, if meeting technological requirement, then by this proportioning, the electrophoresis tank in producing is fed；If the technological requirement of being unsatisfactory for, then changing mixed groove ratio, again prepare and test, the most again preparing once, sample number into spectrum is changed the most accordingly, until meeting technological requirement.
Embodiment 2:
Liquid level is from negative electrode 1 contact rod 19mm, rotate 12 to 25 DEG C of temp. controllable agitator, in step B, mixing speed is 2200 revs/min, in step G, in 16 seconds, voltage is slowly raised to 62V from 0V, in step H, in 16 seconds, voltage is slowly raised to 172V from 62V and maintains 172V voltage 148 seconds, and electric current controls constant temperature oven in 0.15A, step J and controls at 173 DEG C, toasting 19 minutes, anode 5 area and negative electrode 1 area ultimate ratio are 1:5.
Embodiment 3:
Liquid level is from negative electrode 1 contact rod 21mm, rotate 12 to 27 DEG C of temp. controllable agitator, in step G, in 14 seconds, voltage is slowly raised to 58V from 0V, in step H, in 14 seconds, voltage is slowly raised to 168V from 58V and maintains 168V voltage 152 seconds, electric current controls at 0.13A, in step J, constant temperature oven controls at 176 DEG C, toasts 21 minutes, and anode 5 area and negative electrode 1 area ultimate ratio are 1:3.
Claims (9)
1. an electrophoresis tests device, it is characterized in that including electrophoresis tests sulculus (4), voltage stabilizing adjustable DC power supply (6) and temp. controllable agitator (12), electrophoresis tests sulculus (4) includes negative electrode (1), electrophoresis plate (2) and anode (5), electrophoresis tests sulculus (4) is placed on temp. controllable agitator (12), and negative electrode (1), anode (5) electrically connect with voltage stabilizing adjustable DC power supply (6).
Electrophoresis tests device the most according to claim 1, is characterized in that temp. controllable agitator (12) is provided with temperature adjustment knob (11) and speed adjusting knob (13).
Electrophoresis tests device the most according to claim 1, is characterized in that voltage stabilizing adjustable DC power supply (6) is provided with voltage-regulation knob (7) and current adjusting knob (9).
4., according to the electrophoresis tests device described in claim 1 or 2 or 3, it is characterized in that anode (5) area and negative electrode (1) area ultimate ratio are 1:5～1:3.
5. utilize a mixed groove technique for electrophoresis tests device described in claim 1, it is characterized in that comprising the steps:
A. take old tank liquor in the mixed groove ratio of test and newly join each portion of tank liquor and be hybridly prepared into electrophoretic paint (3), and detecting mixing bath parameters；
B. the electrophoretic paint (3) of preparation is injected in electrophoresis tests sulculus (4), electrophoresis plate (2) is hung over negative electrode (1) and above and immerses electrophoretic paint (3)；
C. temp. controllable agitator (12) is started；
D. connect voltage stabilizing adjustable DC power supply (6), by voltage-regulation knob (7), voltage is slowly raised to 58～62V from 0V in 14～16 seconds；Again voltage it was slowly raised to 168～172V from 58～62V in 14～16 seconds and keeps final voltage 148～152 seconds；
E. take out electrophoresis plate (2) and rinse dewatering post-drying, the physical function parameter of the upper electrodeposited paint film of detection electrophoresis plate (2), as met technological requirement, then by this proportioning, the electrophoresis tank in producing is fed；As being unsatisfactory for technological requirement, then change mixed groove than test preparation again until meeting technological requirement.
Mixed groove technique the most according to claim 5, is characterized in that the temperature of temp. controllable agitator (12) controls at 25～27 DEG C, and mixing speed is 2000～2200 revs/min.
Mixed groove technique the most according to claim 5, is characterized in that in step D, electric current controls 0.1～0.15A.
Mixed groove technique the most according to claim 5, is characterized in that mixing bath parameters described in step A includes pH value, electrical conductivity, solid part, pigment, acid milliequivalent MEQ-ACID, alkali milliequivalent MEQ-BASE, solvent BC, solvent PM and total solvent content.
9., according to the mixed groove technique according to any one of claim 5 to 8, it is characterized in that the physical function parameter of electrodeposited paint film described in step E includes outward appearance, shrinkage cavity grade, adhesive force, hardness, impact resistance, roughness, throwing power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610013771.3A CN105821464B (en) | 2016-01-08 | 2016-01-08 | A kind of electrophoresis tests device and the mixed slot technique using the device |
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| CN201610013771.3A CN105821464B (en) | 2016-01-08 | 2016-01-08 | A kind of electrophoresis tests device and the mixed slot technique using the device |
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| CN105821464A true CN105821464A (en) | 2016-08-03 |
| CN105821464B CN105821464B (en) | 2019-03-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374718A (en) * | 2018-02-12 | 2019-02-22 | 蔚来汽车有限公司 | Film properties detection method and device on electrophoresis |
| CN111088515A (en) * | 2019-12-31 | 2020-05-01 | 枣阳市旺前电泳涂料有限公司 | High-throwing-power electrophoretic paint mixing tank method |
| CN115747922A (en) * | 2022-11-22 | 2023-03-07 | 东风柳州汽车有限公司 | Recovery method of electrophoresis tank liquid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201770796U (en) * | 2010-08-31 | 2011-03-23 | 重庆长安汽车股份有限公司 | Electrophoretic apparatus used in laboratory |
| CN204039531U (en) * | 2014-08-28 | 2014-12-24 | 香港生产力促进局 | A kind of electrophoretic deposition set on conductive surface |
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2016
- 2016-01-08 CN CN201610013771.3A patent/CN105821464B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201770796U (en) * | 2010-08-31 | 2011-03-23 | 重庆长安汽车股份有限公司 | Electrophoretic apparatus used in laboratory |
| CN204039531U (en) * | 2014-08-28 | 2014-12-24 | 香港生产力促进局 | A kind of electrophoretic deposition set on conductive surface |
Non-Patent Citations (1)
| Title |
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| 王书燕: "电泳混槽实验研究", 《现代涂装》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374718A (en) * | 2018-02-12 | 2019-02-22 | 蔚来汽车有限公司 | Film properties detection method and device on electrophoresis |
| CN111088515A (en) * | 2019-12-31 | 2020-05-01 | 枣阳市旺前电泳涂料有限公司 | High-throwing-power electrophoretic paint mixing tank method |
| CN115747922A (en) * | 2022-11-22 | 2023-03-07 | 东风柳州汽车有限公司 | Recovery method of electrophoresis tank liquid |
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| CN105821464B (en) | 2019-03-29 |
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