Aluminum plate surface treatment process

First, spraying:

It is dried after spraying colored paint on the surface of aluminum plate. The color of a good spray plate is evenly distributed, and the poor plate sees a corrugated distribution of color from the side. Most of the paint is matte, and there are two kinds of right-angled and chamfered edges. (The chamfering is the "V" shape of the patchwork joints). The sprayed board must be dried so that the paint film is firm. The current home decoration of this craft board has not been basically adopted, and most of them will be used in the decoration of large-scale plants. Because the relative prices are very cheap, there are still many manufacturers who are bidding low prices to attract consumers.

The spraying plate surface treatment process is as follows:

Semi-finished products - Degreasing - Cleaning - Chromating - Drying (drying) - Electrostatic powder coating - Curing, cooling - Next parts and inspection - Packaging storage.

A good spray plate is passivated before surface spraying. Any part of the surface is crossed with a sharp blade to draw a small 1MM*1MM grid. It is peeled off with a medical tape and the coating is not peeled off. The surface is not damaged after washing 100 times.

Second, roller:

After degreasing and chemical treatment on the surface of the aluminum plate, roll the coating with high-quality paint and dry and cure it. The flatness of the surface of the roller coating plate is higher than that of the painted plate. Pearlescent and matte color points, the market is mostly pearlescent. Its price is higher than spraying. The biggest feature of the roller coating is the high degree of color simulation; roller coating process quality is very different, in addition to all the materials, there is the color associated with it several times, such as two painted two rolls, It is to spray one time to bake one time, and then spray and bake again, so that the color is more even and smooth, and the good roll-coating board is also very expensive, vivid in color, and strong in durability.

Imported fluorocarbon roller coating is also a kind of roller coating, which is to add fluorocarbon to pigments to make the color adhesion stronger, the service life is longer, and the resistance to acid and alkali corrosion is often used in exterior decoration of buildings (not afraid of wind Blowing rain showers, the price is very high, is the highest grade of roller-coating.

Rolling surface treatment process is as follows:

Roll-coatings have topcoats, primers, and back-coatings. Back-coatings are primarily anti-oxidant and have a longer service life. Semi-finished products - on the machine - forming - the next piece and inspection - packaging storage.

Roller-coated surface is uniform, smooth, no leakage coating, shrinkage holes, scratches, falling off and other obvious defects. However, there are trace defects such as bubbles, pits, and inclusions on the surface. These are normal phenomena.

Third, film:

Choose high-gloss film or Symphony film, composite coated with professional adhesive on the surface. The film has bright luster and can be selected for a variety of colors, waterproof, fireproof, with excellent durability (weatherability, corrosion resistance, chemical resistance) and anti-pollution ability, and excellent UV protection performance. Membrane imported film and domestic film, imported film durability, gloss is better than domestic film, the market quality of the aluminum buckle plate more than South Korean LG film. The thickness of the aluminum buckle plate should be about 0.6mm, and the overall thickness of some small brand covering plates is 0.6mm thick, but it is to increase the thickness of the film to achieve the purpose of reducing the thickness of the substrate, and some of the plates and even the thickness of the substrate. Only 0.38mm.

The surface treatment process of the coated sheet is as follows:

The surface treatment and process flow of the film-covered board is the same as that of the roll-coating board, except that the surface of the film-covered board is (PVC film) covered with a solid surface, no wrinkles, scratches, falling off, and missing stickers. However, the surface is allowed to have a small amount of micro-wrinkles, concavities and convexities, etc. within 0.2 mm on both sides of the width direction.

Lamination process appeared in the late 1990s. The characteristics of the film is that it can be kept for decades without discoloration, discoloration, many colors, good sense, and easy to get rid of gray and good care. Japan and South Korea were among the first manufacturers to develop ceiling materials, which were later introduced into Taiwan and brought into China. At first, this technology was first used on the surface of electrical appliances, making electrical appliances look more beautiful and grade. In 2000, Taiwan Rising Company, which was engaged in the development of keels and ceilings, transferred this technology to aluminum ceilings and did not expect an unprecedented success. As a kitchen and toilet ceiling material, it has natural advantages: no fading, no shedding, no deformation, no fumes, easy cleaning, beautiful fashion, moisture resistance, acid and alkali resistance, and high cost performance. For most families, it has become the first choice for kitchen and bathroom ceiling decoration in large and medium-sized cities.

At present, the best coating material on the market is the product of South Korea's "LG" company. The film is mainly used for household appliances such as refrigerators and washing machines before it is used for smallpox. After many years of testing, its performance is stable, and it fully guarantees the promise of no discoloration for 30 years.