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At present, anodic oxidation, electrophoretic coating and powder coating are one of the three main surface treatment methods for aluminum profiles, each of which has its own advantages and occupies a considerable market share respectively. Powder spraying uses powder coating, and the process adopts electrostatic spraying, using the friction gun to make the powder particles…
DetailsShot blasting is the use of high-speed rotation of the impeller to small steel or iron shot thrown out of the high-speed impact on the surface of the parts, so you can remove the oxidation layer on the surface of the parts. At the same time steel or iron shot high-speed impact on the surface…
DetailsGeneral knowledge of sandblasting rust removal Sandblasting to remove rust is to use compressed air as the power to form a high-speed jet beam to spray material (copper ore, quartz sand, diamond sand, iron sand, Hainan sand) at high speed to the surface of the workpiece to be treated, so that the appearance or shape…
DetailsI. Pretreatment. Plating, painting, spraying and all covered processing before sandblasting treatment, the surface is absolutely clean, while greatly improving the coverage had adhesion and corrosion resistance. Second, cleaning. Casting parts, stamping parts, welding parts, heat treatment parts and other metal workpieces to oxide, residue, dirt; non-metallic products surface cleaning, ceramic embryo parts surface…
DetailsSolvent-based coatings contain solvents, which emit a large amount of VOC (Volatile Organic Compounds) during the production and construction process, endangering human health and causing environmental pollution. According to statistics, the global annual VOC emissions to the atmosphere are up to several million tons. VOC is a major pollutant in the paint shop, including benzene,…
DetailsSandblasting to remove rust is to use compressed air as the power to form a high-speed jet beam to spray material (copper ore, quartz sand, diamond sand, iron sand, Hainan sand) at high speed to the surface of the workpiece to be treated, so that the appearance or shape of the outer…
DetailsAccording to the operating temperature, can be divided into high-temperature phosphating, medium-temperature phosphating, low-temperature phosphating. 1) low-temperature phosphating, at room temperature, long processing time, in addition to medium-temperature phosphating has been added to the composition, in order to accelerate the speed of phosphating, but also add fluoride, the advantage of low-temperature work, without heating. The…
Details1 Causes of nozzle failure 1.1 Erosion. When the high flow rate of liquid passing through the nozzle hole at the metal surface, it will produce erosion of the nozzle hole, resulting in lower nozzle pressure, spray state becomes irregular. The chance of erosion of the nozzle depends on the hardness of the liquid, spray pressure,…
DetailsIn the spraying process to produce “three wastes” is inevitable, which is the main part of the “three wastes” spraying exhaust gas. Spraying exhaust from the thinner volatilization, organic solvents will not be attached to the surface of the paint with the paint, in the spraying and curing process will be released, the formation of…
DetailsSpraying voltage1.1 In a certain range, when the spraying voltage increases, the powder adhesion increases, but when the voltage exceeds 90KV, the powder adhesion decreases with the increase of voltage.1.2 When the voltage increases, the initial growth rate of the powder layer increases, but with the increase of the spraying time, the effect of voltage…
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