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Process data of rapid hard anodizing of aluminum

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—— Process data of rapid hard anodizing of aluminum ——

Process data of rapid hard anodizing of aluminum
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1, a brief introduction
  Quick hard anodizing The process is mainly used for rapid hard anodizing of aluminum parts such as cylinders, gears, bearings, pistons, steam impellers, leveling machines, steam plugs, rolling bars and guide rails. is a special anodic oxidation surface treatment technology . Experiments and applications have proved that the aluminum material treated by hard anodic oxidation can not only greatly improve the surface hardness and wear resistance of aluminum, but also improve the surface heat resistance and insulation performance, and can greatly inhibit the thermal cracking of parts at high temperature. Hard oxidation of aluminum has become one of the conventional treatment methods for aluminum parts. The melting point of anodic oxide film is as high as 2000 ℃, the thermal conductivity is less than 0.16 w/m.k
2, and the technical characteristics are
  Rapid Hard Anodizing Process adopts Rapid Anodizing Method , developed in 1996. It is a mature process, especially suitable for local oxidation of parts, and can overcome the shortcomings of traditional anodizing such as long time, extremely low productivity and troublesome sealing and insulation. By using special cooling method and increasing oxidation current density, combined with rapid oxidation equipment. During the electrolysis process, the oxidation current gradually decreases along the burn curve (coking curve), which effectively avoids the discovery of burn phenomenon and prevents the dissolution of anodic oxide film, thus achieving rapid growth of oxide film, improving production efficiency and reducing energy consumption. After rapid anodizing , the thickness of oxide film can reach 90um, the time of hard oxidation is 5 ~ 10 minutes, and the Vickers hardness is about HV300.    
       
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