CN105363660A - Automobile part surface pretreatment method - Google Patents
Automobile part surface pretreatment method Download PDFInfo
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- CN105363660A CN105363660A CN201510834057.6A CN201510834057A CN105363660A CN 105363660 A CN105363660 A CN 105363660A CN 201510834057 A CN201510834057 A CN 201510834057A CN 105363660 A CN105363660 A CN 105363660A
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Abstract
The invention discloses an automobile part surface pretreatment method. A workpiece to be treated is placed on a workbench top of vacuum plasma treatment equipment, a spraying gun of the vacuum plasma treatment equipment moves at a constant speed relative to the workpiece within the scope 10 mm-25 mm away from the surface of the workpiece, the spraying gun is used for spraying plasma beams to the surface of the workpiece, and vacuum plasma treatment is conducted on the surface of the workpiece, wherein the speed of movement of the spraying gun relative to the workpiece ranges from 80 mm/s to 500 mm/s. After vacuum plasma treatment is conducted on the surface of the workpiece, pollutants and dust are removed, so that the procedures of grinding, high-pressure washing and the like are omitted, the technical process is simplified, and production efficiency is improved; meanwhile, the tension of the surface of the workpiece can be enhanced greatly, the paint adhesive force is remarkably improved, the treated workpiece can be coated directly without the need of base coating, and therefore the production cost is reduced, and the product good rate is increased.
Description
Technical field
The present invention relates to auto parts machinery technical field of surface, particularly auto parts machinery process for surface preparation.
Background technology
The auto parts machinery that some materials as plastics, ethylene propylene diene rubber (EPDM) section bar, aluminium and so on are made, as air bag cover, steering wheel etc., before carrying out coating process, in order to ensure painting effect, need first to carry out pretreatment to surface of the work, its objective is the spot such as greasy dirt, dirt slag, organic pollutant removing surface of the work, clean surface of the work, improve tension force and the adhesion strength of surface of the work, in order to avoid produce the defect such as bubble, coating adhesion shakiness in coating process simultaneously.
Before carrying out application to the above-mentioned type workpiece at present, pretreated method generally comprises polishing, the links such as high pressure washing, with clean surface of the work, simultaneously, because environmental-friendly water-base coating is widely applied in auto parts machinery application, this aqua type coating needs surface of the work to have stronger tension force (> 50mN/m), surface of the work could be attached to well, form stable sprayed coating, and the workpiece of plastic material, its surface tension is poor, general lower than 35mN/m, so behind polishing finished piece(s) surface, also need to carry out primary coat, thus avoid aqua type coating to be directly coated with being contained in surface of the work.This method operation is loaded down with trivial details, and production efficiency is low, and cost is higher, and easily produces the underproof phenomenon of application and cause product fraction defective when processing the workpiece of some molding surface complexity.
Summary of the invention
The object of the invention is to provide a kind of auto parts machinery process for surface preparation for the deficiencies in the prior art, be applicable to the workpiece of the inert material such as plastic cement or aluminium, the method has enhancing surface of the work tension force, thus realize the advantage of stable spraying effect, there is simplification of flowsheet simultaneously, enhance productivity, reduce production cost, improve the advantage of the rate of pass.
The technical solution used in the present invention is: a kind of auto parts machinery process for surface preparation, is positioned over by pending workpiece on the work top of vacuum plasma treatment equipment; The spray gun of described vacuum plasma treatment equipment at the uniform velocity moves at the position opposite piece of distance surface of the work 10 ~ 25mm, beam-plasma is injected into surface of the work, carries out vacuum plasma treatment to surface of the work; The translational speed of described spray gun opposite piece is 80mm/s ~ 500mm/s.
Preferably, the input voltage of described vacuum plasma treatment equipment is 220V.
Preferably, the environment temperature of carrying out vacuum plasma treatment is 20 DEG C ~ 35 DEG C.
Preferably, after carrying out vacuum plasma treatment to surface of the work, 2 ~ 5 hours time of application waited for by workpiece.
Preferably, described spray gun is arranged symmetrically with along vacuum plasma treatment equipment center line.
Advantage of the present invention and beneficial effect are: auto parts machinery process for surface preparation, and its process is positioned on the work top of vacuum plasma treatment equipment by pending workpiece; The spray gun of described vacuum plasma treatment equipment at the uniform velocity moves at the position opposite piece of distance surface of the work 10 ~ 25mm, beam-plasma is injected into surface of the work, carries out vacuum plasma treatment to surface of the work; The translational speed of described spray gun opposite piece is 80mm/s ~ 500mm/s; Surface of the work is after vacuum plasma treatment, and namely pollutant and dust are eliminated, thus saves the operations such as polishing and high pressure washing, simplifies technological process, improves production efficiency; And the chemical constitution of surface of the work changes, the energy that plasma has makes the oxygen in the molecule of surface of the work and air and nitrogen react, form new active functional group group, this active functional group group makes the tension force of surface of the work greatly strengthen, significantly improve the bonding force to coating, the workpiece after processing directly can carry out application, no longer needs primary coat, thus reduce production cost, improve the acceptance rate of product.
Detailed description of the invention
Be further described the specific embodiment of the present invention below in conjunction with embodiment, following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
A kind of auto parts machinery process for surface preparation, is positioned on the work top of vacuum plasma treatment equipment by pending workpiece; The spray gun of described vacuum plasma treatment equipment at the uniform velocity moves at the position opposite piece of distance surface of the work 10 ~ 25mm, beam-plasma is injected into surface of the work, carries out vacuum plasma treatment to surface of the work; The translational speed of described spray gun opposite piece is 80mm/s ~ 500mm/s.
Plasma is called again electricity slurry, the ionized gas shape material that the positron-electron that the atom after being deprived of by portions of electronics and atom are ionized rear generation forms; When common gases temperature raises, the warm-up movement aggravation of gas particle, makes, between particle, strong collision occurs, electronics in a large amount of atom or molecule is knocked, thus makes gas produce ionization, after gas ionization, not only there is atom in space, also have cation and free electron, namely form plasma.After the electricity slurry bundle that plasma is formed is ejected into surface of the work, pollutant and the dust of surface of the work will be brushed, make the chemical constitution of surface of the work change simultaneously, the energy that plasma has makes the oxygen in the molecule of surface of the work and air and nitrogen react, form new active functional group group, this active functional group group makes the tension force of surface of the work greatly strengthen, and can significantly improve the bonding force of base material to coating.
Described in the present embodiment, the translational speed of spray gun opposite piece is 80mm/s ~ 500mm/s, be preferably 100mm/s ~ 300mm/s, this is because, if spray gun translational speed is too fast, then surface of the work can not get sufficient process, if and described spray gun translational speed is excessively slow, the material molecule chain of surface of the work then can be caused to rupture, this can reduce the bulk strength of material on the contrary, the adhesive effect of storeroom can be affected simultaneously, so the present embodiment is different according to the material of surface of the work, the speed selected is 100mm/s ~ 300mm/s.
In the present embodiment, the input voltage of described vacuum plasma treatment equipment is 220V.
In the present embodiment, the environment temperature of carrying out vacuum plasma treatment is 20 DEG C ~ 35 DEG C.
Show after tested, the workpiece of TPO material only has low surface tension between 38mN/m to 40mN/m not having pre-treatment front surface tension force; And according to known technology, only have when surface tension >=50mN/m time, just possess the tension force forming good adhesion.By described in the present embodiment after environment temperature 20 DEG C ~ 35 DEG C carries out vacuum plasma pretreatment, surface of the work tension force improves greatly, even can reach the peak value of 72mN/m, has possessed the tension force forming good adhesion.
In the present embodiment, after carrying out vacuum plasma treatment to surface of the work, 2 ~ 5 hours time of application waited for by workpiece.
In the present embodiment, described spray gun is arranged symmetrically with along vacuum plasma treatment equipment center line.
Described spray gun is arranged symmetrically with along vacuum plasma treatment equipment center line; In a big way and process surface of the work equably, while raising treatment effeciency, stable treatment effect can be obtained, processes the cell body of surface of the work, hole wall, step, bent angle, high spot well.
The above is only preferred embodiments of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. an auto parts machinery process for surface preparation, is characterized in that: be positioned over by pending workpiece on the work top of vacuum plasma treatment equipment; The spray gun of described vacuum plasma treatment equipment at the uniform velocity moves at the position opposite piece of distance surface of the work 10 ~ 25mm, beam-plasma is injected into surface of the work, carries out vacuum plasma treatment to surface of the work; The translational speed of described spray gun opposite piece is 80mm/s ~ 500mm/s.
2. auto parts machinery process for surface preparation according to claim 1, is characterized in that: the input voltage of described vacuum plasma treatment equipment is 220V.
3. auto parts machinery process for surface preparation according to claim 1, is characterized in that: the environment temperature of carrying out vacuum plasma treatment is 20 DEG C ~ 35 DEG C.
4. auto parts machinery process for surface preparation according to claim 1, is characterized in that: after carrying out vacuum plasma treatment to surface of the work, and 2 ~ 5 hours time of application waited for by workpiece.
5. the auto parts machinery process for surface preparation according to Claims 1-4 any one, is characterized in that: described spray gun is arranged symmetrically with along vacuum plasma treatment equipment center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834057.6A CN105363660A (en) | 2015-11-24 | 2015-11-24 | Automobile part surface pretreatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834057.6A CN105363660A (en) | 2015-11-24 | 2015-11-24 | Automobile part surface pretreatment method |
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| CN105363660A true CN105363660A (en) | 2016-03-02 |
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| CN201510834057.6A Pending CN105363660A (en) | 2015-11-24 | 2015-11-24 | Automobile part surface pretreatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000818A (en) * | 2016-06-13 | 2016-10-12 | 安徽越天特种车桥有限公司 | Vehicle fitting surface treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101199964A (en) * | 2006-12-12 | 2008-06-18 | 福特全球技术公司 | System for plasma treating a plastic component |
| CN101462106A (en) * | 2008-12-19 | 2009-06-24 | 东莞广泽汽车饰件有限公司 | Pretreatment method of atmospheric plasma on surface of automobile accessory |
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2015
- 2015-11-24 CN CN201510834057.6A patent/CN105363660A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101199964A (en) * | 2006-12-12 | 2008-06-18 | 福特全球技术公司 | System for plasma treating a plastic component |
| CN101462106A (en) * | 2008-12-19 | 2009-06-24 | 东莞广泽汽车饰件有限公司 | Pretreatment method of atmospheric plasma on surface of automobile accessory |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000818A (en) * | 2016-06-13 | 2016-10-12 | 安徽越天特种车桥有限公司 | Vehicle fitting surface treatment process |
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Application publication date: 20160302 |
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