Coating Equipment

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coating the surface of the engineering mechanism products fabrication process is one important portion. Rust, corrosion coating quality is the production of the important aspects of aggregate quality. Appearance of the production not merely reflects the product quality protective and decorative properties, merely too constitute one important factor in product worth. The coating equipment is critical apt the starving part of the coating process. Painting equipment into the chief surface readiness ahead painting equipment, drawing equipment, coating drying and curing equipment, mechanized transport equipment, wash atmosphere equipment for temperature and moisture, and other ancillary equipment.

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Painting a process devise, painting purpose: 2, painting the main physical device type: type of Pok: 2.2 paint paint spray booth equipment 2.2.3.1 mutual classification 2.2 3.2 Other main structure of spray booth equipment namely includes 4 processes: electrophoresis surface manipulation characteristics: according to building is divided into: 2.4 mechanized transportation equipment coating equipment, coating equipment, process layout, surface coating technology, current energy-saving coatings from high swimming organic coating equipment, clean technology petitions designed to make painting a diversity of equipment utilization to fulfill a relatively high level, they absence to create a reasonable coating making line: we have to 1st decide the creation program, complete the process chart, program intending, before non- Standard equipment design, manufacture and installation. Therefore, process design, program arranging is to build production lines based ashore correct and logical route for the production operations and product quality will have a decisive clash. Process design include: the quality requirements of coated surface pre-treatment usage, spraying method, process,garethswebsite, coating performance, coating surroundings and period. Coating 1, coating the intention of: construction at painting, so paint the surface being coated to form a solid continuous coating and play its elaboration, protection and special traits such as the role of coating factor 1.1 is the opener to painting project: coating process and equipment, coating materials, operating environment, and painting treatment. Quality of the substance along coating the coating is access to quality elementary conditions. Coating process, equipment, painting environment is full coating substance properties, to obtain high-quality coatings, depress production costs and improve the economy efficiency of the required conditions. Painting the management is to assure that the implementation of the development process to ensure the reliability of coating quality, best value for money and attain the purpose of painting an important condition. 2, coating equipment, major equipment, painting the main surface preparation before painting is divided into equipment, painting equipment, coating drying and curing equipment, mechanized transport equipment, clean air equipment for temperature and humidity, and other ancillary equipment. 2.1 pre-coating surface preparation equipment 2.1.1 The purpose: to remove the alien body was brought painted pieces, such for oxide, rust, grease, etc., to cater for the requirements of a good pedestal coating, such for phosphorus, oxidation, passivation, to ensure nice corrosion resistance coating and decorative properties. 2.1.2 pre-treatment equipment can be divided into physical type, type of restrain. Physical type: ① remove impurities accompanied to the steel surface, with thinner to remove grease and other clay. ② If sulfate or corrosive salts, ought be cleaned with water, ziped air dryer. ③ In the iron panel pretreatment line ashore the shot alternatively sand-blasting method to oxidation,bstsg.net, rust and she cleaned of impurities, and then purified with a vacuum detergent or compressed air will be cleaned steel surface. Of Pok-style: dip-style, spurt, spray with manner dip, spray - Baptist - a medley of spray type. Mainly from the tank, bath heating, ventilation, bath agitation system, phosphorus of the ash handling system, composed of oil-water disjunction system. Among them, phosphorus-based slag and oil-water separation devices is a key system, phosphorus-based slag with the settlement method, spin fluid separation, inclined panel sedimentation method, sack filtration, plate and skeleton filter press and other usually accustomed methods. Oil-water separation are: adsorption, ultrafiltration, heat fuel separation and centrifugal method. 2.2 Equipment 2.2.1 paint paint paint paint method many ways, there is painting, dipping, air spray, high oppression airless spraying, electrostatic spraying, electrophoretic coating, pouring paint, roller coating method. 2.2.2 paint paint ideal environment for the environment should meet the good lighting, suitable temperature, humidity and air cleanliness, good ventilation and launch and explosion required. 2.2.3 The role of spray painting equipment apparatus is to spray a fog over the district among a definite limit and behind filtering, allowing operators to be in line with health conditions, safety standards of the going environment. Furthermore, it should invest a certain temperature, humidity, cleanliness of the construction conditions. 2.2.3.1 Category 1 common room spray) Dry spray booth: for small quantities and extra sophisticated parts of the painting; 2) spray painting room: appropriate for a small chip of paint; 3) water shutter spray booths: for medium-piece paint; 4) rotary spray booth water: appropriate for a massive decorative piece and necessitate a higher degree of precision essential is not too many paint. 2.2.3.2 Spray Booth main structure 1) chamber body: the role is too finite to paint fog among a certain scope. 2) mist filter: sub-dry and wet two. Dry: The baffles or filter periodical to paint blur filter down. Wet: The gas-water merging, the mist particles separated from the air. (Wet chamber in terms of relative dry a mini more environmentally friendly) 3) Water afford system: Wet spray booth to ensure the normal rotation of water required. 4) The ventilation system: the air afford, exhaust components, the device has a certain temperature, humidity and air cleanliness, to ensure namely indoor air was a laminar flow state. 5) Zhao Ming devices: to ensure that equipment in good light Zhao degrees. Other equipment 2.2.4 Impregnation device workpiece inundated in fluid paint, the use of liquid paint adhesion adhesion to the surface membrane of paint. 2.2.5 electrostatic spraying electrostatic spraying equipment: electrostatic field based on the conviction role of the dictate achieved. Generally contain electrostatic spray booth, high-voltage electrostatic generator, electrostatic spray equipment, paint supply device, security devices and other components. 2.2.6 Electrophoresis painting equipment electrophoretic coating: Electrophoresis is the Yin and Yang electrophoretic coating, applied voltage under the achieve of charged ions migrate to the cathode of the paint, and with the cathode surface effects arising from the formation of non-dissolved alkaline deposition on the surface. It consists of four processes: 1) electrolysis (decomposition) repercussion at the cathode for the electrolysis initial reaction of hydrogen and hydroxyl ions OH, this reaction causes the formation of a high alkaline cathode surface border floor, while the role of a cation with the hydroxyl water-insoluble material, coating deposition, equation: H2O → OH + H 2) electrophoretic activity (mobility, migration) and H + cation resin in the electric field, move to the cathode, when anions migrate to the anode process. 3) electrochemical deposition (precipitation) in the surface to be coated, alkali cation resin and the role of the cathode surface, and the precipitation is not in the sediments deposited on the workpiece to be coated. 4) electro-osmotic (dehydration) coating on the surface of solid and semi-transparent nature of the film, with a cloud of pores, water is leaking from the cathode coating in the row to the cordless field, occasioning dehydration, coating, and coating membrane is adsorbed on the surface, and to complete the electrophoresis process. Electrophoretic specifics of surface treatment: electrophoresis coating membrane has plump, uniform, flat, smooth avails, electrophoresis coating hardness, adhesion, corrosion resistance, impact resistance, penetration superior to other coating processes. 2.2.7 Electrostatic abrasive coating equipment powder coating with a good economic, no pollution, high efficiency, a spray coating thickness can approach 50 μ m or more. Electrostatic abrasive coating equipment including powder room, high-voltage electrostatic generator, electrostatic spray pistol for powder, powder recovery element and other components. 2.3 2.3.1 drying equipment drying equipment drying equipment and the makeup of the important categories there are various types of categories, normally according to production organization, compartment body shape, the use of stamina, heat convey, circulation of air in the room at the heating mode of classification modes: convection drying, radiation drying, convection + radiation drying; by structure is divided into: straight-through, bridge, half bridge, the dead-end type, double type, П fonts and so on. Main components: 1) chamber body: the circulation of peppery air does not drip, so that the indoor temperature is kept within a certain range; 2) heating system: a radiation heating and convection heating to ensure the indoor air temperature control within the requirements of the process; 3 ) Duct: guide hot air circulating in the drying room, the heat to the workpiece 4) Air filter: filter dust in the air 5) air heater; heated indoor air circulation 6) Fans: coerced hot air circulation drying room 7) air curtain system: to prevent the hot air to leak out, to cultivate thermal efficiency; 8) temperature control system: to ensure that the indoor temperature of every process requirements of the device. 2.4 mechanized mechanized transportation equipment, transportation equipment, air transport and is divided into two major categories of floor transportation. Air transport are: general {overhead|on the published of} conveyors, double fetter hanging conveyor, light overhead conveyors, product unlock suspension conveyor, lift their own transport and so on. Ground transportation are: reverse product conveyor, skid conveyor, necklace conveyor tank, common ground conveyor. The role of mechanized equipment in the coating lines to connect various types of activity equipment, organization and coordination role to fulfill settled action. 3, coating equipment, the main test requirements 1) drying oven type of equipment the main test of uniformity, normally controlled at ± 5 ℃, use oven thermometer with a most of 6 test situations. 2) tests of Zhao painting level equipment, temperature, humidity and average air speed: painting class for the claiming requirements of equipment in their degree of Zhao 800 ~ 1000Lx, temperature requirements at 23 ± 2 ℃, respective humidity 55 ± 5%, average wind speed 0.45 ~ 0.55m / s. 3) All equipment in the operating area of ​​the rumpus ≤ 85db. Coating equipment coating equipment process layout layout design process is good or bad, the use of coating production lines is critical. If the coating process equipment layout properly, even now the production of a single device, no stuff how, the all coating line is not good to use. Coating equipment layout technology immediately common typical mistakes are listed below: 1, yield fewer than the design program: Some designs do not consider painting equipment hanging direction, regardless of hanging space, regardless of the downhill, horizontal stoop interference, without regard to refusal rate of productiin due time, painting equipment utilization, product tip production capability. Lead to yield fewer than the design program. 2, coating equipment, process period is insufficient: some of the design in mandate to reduce costs, by reducing the process time to achieve their goals. Common, such as: painting production line is not enough time before the conversion process, resulting in a string liquid; curing temperature while the time is not considered, resulting in curing bad; painting leveling lack of time, resulting in the leveling film is not enough; cool ample behind curing, paint ( or lower circumstance) while the workpiece overheating. 3, poorly designed transportation equipment: There are numerous parts of the transportation methods, poorly designed production capability, process technology, the upper and lower parts will have adverse consequences. Common with hanging chain conveyor, the load capacity, towing capacity and interference need to calculate the painting. The speed of the chain aiding the equipment must have the corresponding requirements. Painting equipment for smooth chain, the synchronization is also required. 4, coating equipment, unsuitable selection: Due to different requirements, equipment culling are another, and a kind of coating equipment has its advantages and its drawbacks. The design can not annotate to the user to create and found it unsatisfactory. For example, spray drying tunnel with a wind screen insulation, cleanliness requirements of the workpiece is not installed purification equipment. Such errors are the most common coating process equipment layout errors. Coating surface coating technology, fashionable energy-saving equipment, coating equipment, coating technology, new energy-saving surface swimming paint coating from the kernel of self-activity of deposited polymer latex, latex polymer structure involved, triggering system, molecular weight distribution, rubber mote size, since the swimming system stability and movement control, affect the representation of painting from swimming. In order to obtain high quality and energy-saving coatings from swimming, there are key technologies: (1) vinylidene chloride monomer from swimming appearance the third-generation artificial latex paint from swimming classes that are vinylidene chloride cream. From the molecular structure, using partial vinyl chloride monomer (CH2 = CCl2) synthetic polymer emulsion, due to partial PVC molecular chain structure is structured, it is formed by the coating with excellent anti-permeability, efficacious prevent water, oxygen and other corrosive medium into the coating and the substrate interface, so it has great water resistance, oil resistance, solvent resistance and performance of Pok pills. More famous is that it can be cured at 100 ℃, film, and acrylic film-forming temperature of 170 ℃, Gupian vinyl coating swimming classes since there are significant vigor savings. Currently there is no suitable for swimming from the vinylidene chloride emulsion paint, to be developed. Since swimming is a special coating of water dispelled latex paint, colloidal particle size of 100 ~ 300nm, in the presence of surfactant, radiated in the redox-active agency with the acidic aqueous solution. Pok from the heat point of outlook, it is a relatively settled and absolutely erratic system, under certain conditions, destabilization of the emulsion particles will collect. Since swimming is deposited below the premise of the overall stability of the system, the interface in the metal and emulsion destabilization of the local area to create such conditions, leaving the latex deposited on the metal surface in the process. When metalline steel piece immersed in the bath, the acid system, the steel dissolved into Fe2 +, the vigorous proxy in the system will be oxidized to Fe2 + Fe3 +. When Fe3 + ions at the interface exceeds a certain quantity, the latex particles that produce local destabilization of cohesion and deposited on the metal surface, so swimming since the deposition process is essentially a reaction of Pok, and so the swimming is also known as the deposition of the bund. High naturalness applications of organic coating equipment coating equipment with high organic clean plate formation, the obvious high quality requirements, coating smooth and delicate, pastel specifics; and film adhesion is lusty, has good bending function, complex processing in the prelude, the coating does not crack, do not peel; have some anti-pollution, cozy to clean and scrub traits, more secondhand in clean room walls. High-purity organic functional organic coated canvas is a coated sheet products. As China's economy continues to grow, principally in recent annuals, Ji electronic, biological, pill and other high-tech industry's fast growth, coating equipment, clean room is widely accustom in various industries. Organic coated sheet as a clean room the main structure, has also been widely used. Electronic plant, hospital, edible processing vegetation cleanliness levels from cheap to high in turn divided into ten thousand, one thousand, one hundred. Often said that the cleanliness class is 100 cubic feet in a space larger than 0.5 micron particles that is not necessary to Ji in the 100, 10 cubic feet of space is a 0.5-micron particles must not Ji at 10, 1000 can not be more than 1000. Further reading: 1

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