What air compressor is good for electroplating spraying industry

air compressor in electroplating plant useful:

1, blowing sand before plating

2. After cleaning, blow air to remove water

3, the product is useful to spray varnish after electroplating

4, some small tanks are also useful for compressed air stirring

cleaning after spraying water-based paint After each spray, the water-based paint should be poured back into the paint can as soon as possible, and then rinse the paint spray gun with clean water. After the paint in the paint spray gun is controlled out, add a little water to the paint cup and spray it from the nozzle after full shaking. Wipe off any paint left on the surface of the paint spray gun and then put it in the sink to clean. Turn the paint spray gun upside down in the sink and flush the siphon with warm water to let the water flow out of the nozzle. Wipe or blow dry all accessories after cleaning. If the paint cup has a lid, you can leave the remaining nitrocellulose or water-based paint in the paint cup without emptying the paint cup, just clean the paint spray gun.

Cleaning after spraying nitro paint If you need to spray paint intermittently throughout the day, it is not necessary to clean the paint spray gun every time before completing today's painting work. When the paint spray gun needs to be cleaned, remove the compressed air hose and the paint cup, and then press the trigger to allow the paint accumulated in the paint spray gun to return and drip into the paint cup. After completing these steps, you can thoroughly clean the paint gun as described earlier. After cleaning, there is likely to be a little thinner left in the paint cup. You can ignore it and directly put the paint cup back on the paint spray gun for the next use. Do not press the trigger again after the final completion of cleaning, so as to prevent the thinner accumulated in the paint spray gun from flowing back into the paint cup, thus ensuring that the internal parts are clean and preventing adhesion. Note that this method cannot be used in the case where a water-based paint is used.

Painting is not uniform, the old flow paint mainly depends on 3 technical points. 1, is the distance of the spray gun. 2, is the paint concentration. 3. The moving speed of the spray gun.

Point 1: Spray gun and paint as far as possible to keep vertical, and then from left to right or from top to bottom. The distance is about 20cm.

Point 2; The paint concentration is too thick. Only you have tried it slowly and the description is not clear.

Point 3; The speed of the spray gun should be uniform and parallel, and the spray fan should press about 1/3 of the previous sweep. As for the speed of movement depends on your eyes. When you are not skilled, you only have to look at the smoothness of the newly sprayed place when spraying paint. If it is foggy, you haven't sprayed enough. You can make up for it. If it is smooth, you can spray enough. In a short time, never spray the smooth place again. Take the mist to the critical point of smoothness. More will flow, less paint is not smooth, not full. In addition: the spray gun should be adjusted to a fan-shaped spray surface and perpendicular to the moving direction.

Before spraying, the furniture should be polished without any nest or bulge. It is said that the complexity is the usage of the spray gun. Before using it, the spray gun should be cleaned up. The movement speed of the spray gun should be uniform, not fast or slow, which will affect the effect and prevent paint flow.

Large-diameter primer spray, small-diameter topcoat spray, but this is not a standard, for example: a 1.4mm caliber spray gun, for example, primer and topcoat can be sprayed. The caliber of the spray gun is: 1.0mm 1.3mm 1.5mm 1.8mm 2.0mm 2.5mm 3.0m 0.5mm and other caliber; The caliber of the spray gun is generally different according to the purpose, and the caliber selected is different, and different calibers have been selected according to the needs of the operation. For example, it is generally 1.3 or less on the vehicle. If it is a large object, the surface may use a large diameter. If you need face spray, medium spray, caliber selection is not the same. Multi-layer spray paint, according to the different drying time of spray paint, the interval is also different. If the spray paint with a long drying time is generally a small-caliber spray paint gun, if it is fast, then choose a larger-caliber spray paint gun.

The spray distance between the spray gun mouth and the surface of the coated object should be 30~60cm.

1. It is generally stipulated that if the coating is too close, it is easy to cause poor dispersion and accumulation, and if the coating is too slow, uniform coating cannot be obtained. Therefore, arm action instead of wrist action should be used when spraying. If the coating is too far away, the coating will be too thin due to the flying of the coating, and flying dust may also be generated to adhere to the film surface, which can be controlled by one and a half "ten" or two. The operation of the spray gun shall be perpendicular to the surface of the object to be coated, and the thickness of each spraying shall generally be a "ten", from right to left and thicker;

2. The moving speed of the spray gun shall be 3~4 m/, and the spraying shall be repeated continuously from top to bottom and then from bottom to top without leakage.

3, in order to make the coating uniform and dense; 3~1/, because the arm action spraying can reach the purpose of equality and vertical, wrist action will produce a circular arc action with the wrist as the fulcrum. At the same time, when spraying, the spraying surface of the latter stroke should overlap 1/of the width of the coating surface of the previous stroke to make the spraying uneven until the spraying of the entire spraying surface is completed. The spraying operation sequence is usually from left to right, spraying on the entire spraying surface of a horizontal and vertical two-line spraying for a "ten" spray gun use method:

paint spray gun use methods:

● Pour paint: stir and shake the paint to be sprayed, pour it into the paint cup under the paint spray gun, try to pour all the paint into the paint cup, and then package the paint bucket and paint spray gun to prevent the paint from volatilizing.

● Spraying: When spraying, place the paint spray gun about 20cm away from the object to be sprayed and press the trigger. Before formal spraying, it is necessary to test whether the spitting effect is good or not and whether the traces are uniform on the unwanted objects, and the newly sprayed paint should be wet. When spraying, the spray slurry should be perpendicular to the surface of the object, and the action should be quickly cooked and evenly moved, in order to ensure uniform spraying.

● Cleaning: After each painting, the paint cup under the painting shall be cleaned. The whole spray slurry shall be removed for cleaning. Press the paint trigger to let the paint in the spray gun flow back into the paint cup to complete the cleaning of the whole spray gun. Maintenance: After each spray paint cleaning, it is also necessary to maintain the spray gun, such as adding a little lubricating oil on it, so that the spray gun can be lubricated at any time and can work at any time.

Air-free nozzles can be used. Ordinary nozzles work with air, which is easy to atomize and inappropriate. Airless spraying is the use of plunger pumps, diaphragm pumps and other forms of booster pump to pressurize the liquid-like paint, and then delivered to the airless spray gun through a high-pressure hose, and finally the airless nozzle releases hydraulic pressure, instantaneous atomization and sprays to the surface of the coated material to form a coating layer. Because the paint does not contain air, it is called airless spraying, referred to as airless spraying. Airless spraying machine is widely used in Europe and the United States and other countries in the world, has become the primary problem faced by coating companies, many domestic coating companies equipped with Germany, the United States and other high-pressure airless spraying equipment, consolidate and continue to increase their market share, increase the advanced and efficient service content. Nowadays, high pressure airless spraying has become a hot topic in the coating industry.

Spraying special air compressor can choose Shanghai granklin air compressor.