company news about One coating one baking, two coating one baking, three coating one baking, two coating two baking, three coating two baking, four coating two baking automatic spray line What does it mean?

Powder sprayed surface coating is one coat one bake. Two paint is primer and top paint, three paint refers to primer, top paint, varnish, one baking two baking is the number of curing, two baking is two spraying, two curing.
The process is: the first spray (primer)→ baking → the second spray (top paint)→ baking, mainly in the fluorocarbon spray above the multi-point: first spray the bottom paint into the oven curing, and then spray the surface paint into the oven curing.

The project of one spray and one bake spraying line mainly includes chain mesa conveying system, electrostatic dust removal system, automatic spraying system, coating baking system, exhaust gas treatment system, dust-free compartment, workpiece rotation system, etc. The design of the line body is mainly based on the workpiece to decide, the material of the workpiece is plastic parts, the size of the workpiece is Φ60-230mm, the product conveying method is continuous conveying, the spraying operation mode is the forward machine or the 4-axis 6-axis machine online automatic spraying, the process speed is at least 3.0m/min (1-5m/min variable frequency adjustable). The fixture spacing is 152.4mm

The output of the workpiece determines the length of the wire body, and its process will affect the transmission speed of the wire body. This scheme designs an automatic spraying line with one coating and one baking. Through on-line spraying to the refeeder, the spraying room is equipped with an automatic dust removal system before the spraying room, the drying system is equipped with an infrared heating system, and the conveying system adopts a vertical chain conveying. Spraying line process flow: upper part - automatic dust removal (1m)- automatic spraying (2m)- leveling (at least 6m)- curing (8m, normal temperature -80°C)- cooling (3m, blow cold air)- lower part.

Spraying aluminum plate three coating two baking refers to: spraying three groups of spray guns, one primer, two color paint (fluorocarbon or polyester paint), three protective paint (varnish), two baking refers to the aluminum plate after three coating and then two baking. However, the current spray line process is basically: three paint and one bake, two paint and one bake.

Four coatings (primer, medium paint, color paint, varnish) is when the color paint contains a lot of metal pigments, a layer of intermediate coating is needed between the primer and the color paint. To protect the coating from UV rays, moisture, and chemicals, some paints that contain flash pigments and all paints that contain metallic pigments require varnish as an outer coating. Varnish can be used on any coating to increase protection, improve overall performance and simplify maintenance of coating systems.

The spraying equipment in the spraying line is composed of five parts, which are automatic dust removal cabinet, automatic spray painting chamber, curing furnace, cooling chamber and spray gun system. The process temperature, humidity and cleanliness control is also very important, such as baking area, the use of far infrared electric heating, a higher 80 ° C, the cleanliness of millions of degrees can be, electrostatic dust removal area and spraying area, cooling area cleanliness requirements are relatively higher, to reach 10,000, and the upper and lower parts of the area cleanliness requirements are lower, need 100,000. Of course, the cleanliness of the spraying workshop mainly depends on the process requirements of customers.