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China, Chinese Aluminum Casting Parts Pre-Reatment Powder Coating Painting Spray Surface Treatment1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Powder Coating MachineSpray Paint MachinePowder Coating Treatment
Shenzhen Xinqinfeng Industrial Equipment Co., Ltd.
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Product Description Aluminum Casting Parts Pre-reatment Powder Coating Painting Spray Surface Treatment Product Description 1.ApplicationPhosphating is widely used in anti-corrosion technology and the metal cold deformation processing industry. The main improvements in phosphating technology include: low-temperature phosphating, various methods for controlling the thickness of the phosphating film, and continuous steel strip high-speed phosphating.2. Basic PrincipleThe phosphating process involves both chemical and electrochemical reactions. The reaction mechanisms of phosphating for different phosphating systems and different substrates are quite complex. Although scientists have conducted extensive research in this area, they have not yet fully understood it. Currently, many scholars agree that the phosphating film formation process mainly consists of the following four steps:The acidic erosion reduces the concentration of H+ on the surface of the base metal.Accelerant (oxidizing agent) acceleratesMultistage dissociation of phosphate groupsThe phosphate ions precipitate and crystallize to form a phosphating film.This mechanism can not only explain the phosphating film formation processes of zinc-based, manganese-based and zinc-calcium-based systems, but also guide the design of phosphating formulations and processes. The phosphating mechanisms of zinc materials and aluminum materials are basically the same as the above. The phosphating speed of zinc materials is faster, and the phosphating film only has a single composition of zinc phosphate salt, and there is very little sludge. For aluminum materials, more fluorine compounds are generally added to form AlF3 and AlF63-, and the phosphating process of aluminum materials is basically the same as the above mechanism.3. Phosphating ClassificationAccording to temperatureHigh-temperature phosphating: This process is carried out at a temperature range of 90 to 98oC, with a treatment time of 10 to 20 minutes. The thickness of the phosphating film can reach 10 to 30 g/m2.Medium-temperature phosphating: This process is carried out at a temperature range of 50 to 70 oC, with a treatment time of 10 to 15 minutes. The thickness of the phosphating film can reach 1 to 7 g/m2.Normal (low) temperature phosphating: This process is carried out at a temperature range of 15 to 35oC, with a treatment time of 20 to 60 minutes. The thickness of the phosphating film is only 0.2 to 7 g/m2. Detailed Photos Produciton line photo Company Information FAQFAQIs it safe to order from XINQINFENG? Yes,100% sure you are safe to order from us. XINQINFENG exported to many countries and we are the famous factory produce spray equipment more than 17 years in China.How to delivery?By sea for big order ,by courier for small order ,by airlines.How to pay?We accept the paypal ( but credit card not accepted),Western Union ,Bank transfer , money gram,etc.Which model should I choose?When spray specially metallic powders, according to your product shapes and the coating job details. For example, need to change colors often or only few colors, then choose the box feed unit or hopper feed unit. The small hopper unit is good for lab test or small work.Can I customized the machines?Yes, we are a professional team for powder coating equipments, Our technician will design for you specially according to your needs and your factory, workpiece etc information.What should I offer if I want to customized the machine?a. Your factory available for the equipment dimension by L x W x Hb. Your max workpiece or product weight and size by L x W x Hc. Your product surface condiation(with oil or dust?) and some pictures if possibled. Your output capacity(for machine line)e. Your industrial electric power in V-Phase-Hz.Can you install for us?Yes, we can install overseas for you. But the engineers overseas installation cost, round trip air tickets, accommodation, meals and transport charges are on the buyers.
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