Pay attention to aluminum after oxidation treatment

1. Rinse with hot water. The purpose of hot water washing is to age the film. However, the level and time should be strictly controlled, the water temperature is too high, the film is thinner, and the color is lighter. Handling time is too long will also present the above similar results, the appropriate temperature and time is: temperature 40~50℃ time 0.5~1MIN.
2. Boring. Dry to natural drying is good, the workpiece of the filling highland barley washed by hot water is hung on the shelf, so that the free water on the surface of the task flows downward in a straight direction. The water droplets flowing to the corner of the lower end are sucked away with a towel, and the color of the film layer dried by this method is not affected, which appears natural.
3. Aging. Aging method can be determined according to climatic conditions, there is daylight in the winter can be exposed in the sun, aluminum oxidation rainy days or summer can be baked in the oven, the process conditions are: temperature 40~50℃ time 10~15min.
4. Repair of unqualified parts. The unqualified conductive oxide film should be picked out before the boring and aging process, because the film layer is difficult to remove after boring and aging and will affect the surface roughness of the workpiece. For non-conforming workpieces, we can take the following complex measures to stop processing.
First of all, the unqualified workpiece is clamped on the fixture used for aluminum anodizing, and then stop the anodizing treatment for 2 to 3min according to the anodizing method of aluminum alloy profiles in sulfuric acid solution, until the film layer is solid and scattered, and then the conductive anodizing can be stopped again after a little cleaning by alkaline solution and nitric acid light.
Aluminum oxide swing cesium art requirements, the workpiece into the heat disposal or welding process before the need to be cleaned by inorganic solvents, remove the surface of the oil, but currently can not do this, so the surface of the workpiece constitutes a layer of oil sintering coke, this layer of coke in inorganic solvents is difficult to remove, if soaked in lye will cause partial corrosion, pitting or forming uneven, Seriously affect the quality of goods.