來源：http://www.xiangbolan.com 發布時間：2021-08-10 15:58:59
When we operate with insulated aluminum plate, we may encounter the oxidation of insulated aluminum plate. How should we deal with this situation?
(1) Rinse with hot water. The purpose of hot water washing is to aging the film. However, the water temperature and time shall be strictly controlled. If the water temperature is too high, the film becomes thinner and the color becomes lighter. The above-mentioned similar problems will also occur when the treatment time of industrial thermal insulation aluminum plate is too long. The appropriate temperature and time are: temperature 40 ~ 50 ℃ and time 0.5 ~ 1min
(2) Dry. It is better to dry naturally. The workpiece filled with barley washed by hot water is hung obliquely on the shelf, so that the free water on the working surface is downward in a straight direction. The water drops flowing to the lower corner are absorbed with a towel. The color of the film dried by this method is not affected and appears natural.
(3) Aging. The aging method of thermal insulation aluminum plate can be determined according to the climatic conditions. It can be exposed to the sun in summer with sunlight. It can be baked in an oven in cloudy and rainy days or winter. The process conditions are: temperature 40 ~ 50 ℃ and time 10 ~ 15min
(4) Repair of nonconforming parts. Unqualified conductive oxide film parts should be picked out before drying and aging process, because it is difficult to remove the film after drying and aging and will affect the surface roughness of the workpiece. We can first clamp the unqualified workpiece on the fixture for aluminum anodizing, and then conduct anodizing according to the anodizing method of aluminum in sulfuric acid solution for 2 ~ 3min. After the film is soft and falls off, we can conduct conductive anodizing again after a little cleaning with alkali solution and nitric acid.