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2, the main equipment

Painting the main equipment is divided into surface pretreatment before painting equipment, paint, coating, drying and curing equipment, mechanization conveying equipment, clean constant temperature and humidity air supply equipment and other ancillary equipment.

2.1 the coating surface pretreatment equipment

The purpose of 2.1.1 pretreatment:

Remove the coated with foreign body, such as scale, grease, rust stain, provide good base suitable for the requirements of the coating, such as phosphate, oxidation, passivation, to ensure that the coating has good anticorrosion performance and decorative performance.

2.1.2 pretreatment equipment is mainly divided into physical, chemical formula.

Physical form:

1) remove Yu Gangban surface impurities, with thinner to remove oil and dirt.

(2) sulfate or corrosive salts, if any, should be in clean water and dry with compressed air.

(3) on the steel pretreatment line, in order to shot blast or method will scale, rust and her impurity was removed, and then use a vacuum cleaner or by the purification of the compressed air to the steel surface clean.

Chemical formula:

Immersion type, jet combination, spray, spray - combining spray type.

Mainly by the bath tub, bath heating system, ventilation system, mixing system, phosphate slag system, oil water separation system, etc. Among them, phosphate slag and oil-water separation device is the key system, phosphate slag have settlement method, rotating liquid separation and inclined plate sedimentation, bag filter, commonly used methods, such as plate and frame filter press.

Oil-water separation mainly include: adsorption method, ultrafiltration method, hot oil separation and centrifugation.

2.2 paint equipment

2.2.1 coating method

Paint a lot of methods, have to brush paint, varnished, air spraying, high-pressure airless spraying, electrostatic spraying, electrophoresis paint, spray paint, roller coating method, etc.

2.2.2 painting environment

Ideal painting environment should meet good daylighting, proper temperature, humidity and cleanliness of the air, good ventilation and requirement for fire and explosion prevention.

2.2.3 paint spraying equipment

Is the role of paint spraying equipment of spray paint fog limited in a certain area and through filtering processing, make the operator gets conform to the hygiene safety standards, and working environment. In addition, you should provide a certain temperature, humidity, cleanliness of the construction conditions.

2.2.3.1 common spray room category

1) dry spray paint room: applicable to small batch workpiece painting;

2) spray type spray room: suitable for small workpiece paint;

3) water curtain spray chamber: applicable to medium artifacts of painting;

4) screw type water spray room: suitable for decorative demanding large artifacts in the paint.

2.2.3.2 spray room main structure

1) Chambers: the role is to spray mist restrictions in a certain range.

2) paint mist filtering device: dry and wet type two kinds.

Dry: through the baffle plate or filter to filter paint mist.

Wet: through an air water mixture, paint fog particles separated from the air.

3) water supply system: ensure that wet spray room needed for the normal cycle of water.

4) ventilation system: consists of air supply and exhaust air, to provide equipment has a certain temperature, humidity and cleanliness of the air, ensure indoor air laminar flow state.

5) lighting: to ensure that the equipment has good light.

2.2.4 leaching paint equipment

The workpiece immersion in the liquid paint, use paint liquid adhesive to make a layer of coating surface adhesion.

2.2.5 electrostatic spraying equipment

Electrostatic painting: based on the principle of electrostatic field on the charge. Generally includes electrostatic spray paint room, high-voltage electrostatic generator, electrostatic spray gun device, for the paint device, safety device, etc.

2.2.6 electrophoretic coating equipment

Electrophoresis paint: under the action of applied electric field, the ionization coating particles dispersed in the water, by electrophoretic coating on the working surface to form a protective coating.

2.2.7 powder electrostatic spraying equipment

Powder coating has good economy and no environmental pollution, high efficiency and a spray can make the coating thickness reaches more than 50 microns.

Powder electrostatic spraying equipment mainly includes the powder room, high-voltage electrostatic generator, electrostatic powder spraying gun, powder, powder recovery unit, etc.

2.3 drying equipment

2.3.1 main classification and drying equipment

Drying equipment have all kinds of classification, according to production organization way, the room usually body shape, use energy, heat transfer, such as air indoors and in a circular manner classification according to the heating mode can be divided into:

Convection drying, drying of radiation, convection + radiation drying;

In the form of the structure:

Straight-through, bridge, half bridge, the dead end, double, П fonts, etc.

Main composition:

1) Chambers: make the circulation of hot air does not overflow, keep indoor temperature within a certain range;

2) heating system: the radiation heating and convection heating, assure indoor air temperature control within the scope of the technical requirements;

3) duct: guide the heat in dry indoor air circulation, the quantity of heat to the workpiece

4) air filter: filter the dust in the air

5) air heater; Heat the indoor air circulation

6) fan: forced drying indoor hot air circulation

7) air curtain system: to prevent hot air spillover, increase thermal efficiency;

8) temperature control system, ensure indoor temperature meet the process requirements of paragraphs.

2.4 mechanization conveying equipment

Mechanization conveying equipment is mainly divided into two major categories of air and ground transportation.

Air transport are: ordinary hanging conveyor, double chain, hanging conveyor, light hanging conveyor, product type, hanging conveyor, hoist transmission of bicycle, etc.

Ground transportation: reverse product put conveyor, skid transportation, tanks, common ground conveyor chain conveyor, etc.

Mechanized equipment is used in the organization and coordination effect in the coating production line.

3, coating equipment, the main test requirements

1) drying equipment is mainly to test the uniformity of furnace temperature, usually control at + / - 5 ℃, using with a maximum test oven thermometer 6 position.

2) paint mainly such equipment testing average intensity of illumination, temperature, humidity and wind speed, higher requirements for the spray paint its illumination demand such equipment in 800 ~ 1000 lx, temperature in 23 + 2 ℃, relative humidity and 55 + / - 5%, the average wind speed 0.45 ~ 0.55 m/s.

3) all the equipment in the operating area noise or less 85 db.

Is in metal, plastic, wood surface with high-pressure electrostatic suction side effects such as spray paint or powder coating on the surface, with a certain high temperature equipment make it cured < including spray gun, spraying room, recycling equipment, transportation equipment, high temperature curing equipment, and the pretreatment equipment, etc.