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Three proofing lacquer hyphenates/and operation process

Three proofing lacquer also called PCB electronic anti-corrosion paint, PCB extend, phi overburden oil, waterproof glue, JueYuanQi, moistureproof lacquer, anti-corrosion coatings, anticorrosive paint, waterproof, salt fog lacquer, dustproof paint, paint, the beatles overburden paint protection, three - such as glue, had used anti-corrosion paint of PCB a waterproof, moistureproof, dustproof "three proofing" performance and cold and hot shock resistance, ageing resistance, resistance to radiation, salt-fog resistant, ozone and corrosion resistance vibration, good flexibility, good adhesion, such as performance, thereby improving and prolonging their service life, ensure use of safety and reliability. In order to make three proofing lacquer play excellent performance, the operation process is very important. Three proofing lacquer using process has the following four:

Anti-corrosion paint brush besmear of operation of craft

Brushing besmear method is the most simple coating method. Usually used for local repair and maintenance, usable also reality check room environment or small batch trial-production/production, general is coated with quality requirement is not very high occasion.

Brush besmear of advantage is almost without equipment fixtures investment; Save coating material, Generally do not need to cover processes.

Defect is narrow scope, Efficiency lowest, The whole BanShua besmear has covered effect, coating consistency is worse, for manual operation, easy appear bubbles, corrugated, thickness nonuniformity defects, Need a large number of labor.

Three proofing lacquer operation of craft soaking and coating method

Soak besmear of coating process from initial inception, has had a extensive use, apply to need completely coated circumstance; Just as coated effect is concerned, soaking and coating method is one of the most effective ways.

Soak besmear of advantage is: can adopt manual or automatic coating. Which manual operation simple and small investment, Material transfer rate is high, can fully coated with the entire product without shielding effect. And automation soaking and coating equipment can meet the need of mass production.

Soak besmear of defect is: coating material container if open, with the increase of number of coating, can have impurities problems, it is necessary to change regularly materials and clean containers with solvent, according to the hair also needs supplemented unceasingly, Excessive and spare circuit board thickness after many materials for drip waste; Need covering part, Cover/remove the cover requires a lot of manpower and material resources, Coating quality is difficult to control. To cause sexual poor. Too much manual operation may cause of products into unnecessary physical damage.

Three proofing lacquer operation of craft spraying method

Spraying method is the industry the most commonly used coating method, divide again machines automatic spraying and manual spray. Among them, the machine automatically spraying applies to mass production, large or long-term production customers.

Advantage: can selectively spraying, high precision, even, high efficiency, and can automatically detect.

Defect is: high cost of operating the demand is higher, and the accuracy of the shadow (components may produce not cover anti-corrosion paint place).

And manual spraying is generally use handheld gun + tracheal + compressor (+ exhaust fan) combination. Advantage: low cost, suitable for medium customers. But it needs more pressure, can form 5KG WuZhang, so in atmospheric pressure regulating the demand is higher, if air pressure is not high, anti-corrosion paint not atomization, drawing, manual spraying on operation accuracy requirement is high.

Three proofing lacquer operation of craft curtain coating method

Curtain coating method is a less the anti-corrosion paint coating method.

Stored in high the vats anti-corrosion paint, through the nozzle or narrow gap under a curtain, shower shower in the shape of conveyors driven by the thing on besmear, forming a uniform film. Redundant anti-corrosion paint is flowing to container, through the pump to high trough of recycling.

Small batch production commonly used while manual operation, directly to the product pouring anti-corrosion paint, therefore curtain coating method called again poured finishes.

Mass production commonly used while automatic assembly line operation, by adjusting the nozzle of the size or narrow gap width, to control product on three proofing coating film thickness. If the paint film thicker, by the conveyor belt classics drying box out of the products, the film will appear bubbles. If the paint film is thinner, the product will appear show, drench besmear not uniform. Consequently curtain coating method called curtain coating.

According to the characteristics of different products, in order to increase anti-corrosion coating membrane on product adhesion, sometimes you should add sulfur, In order to increase product thickness, need more tests for products once or several curtain coating and add sulfur.

 

 Three proofing lacquer data table