Attention should be paid to aluminum oxidation treatment

Attention should be paid to aluminum oxidation treatment

In order to create a hard surface on the aluminum surface, some aluminum workpieces will be oxidized to process. In this way, the process effect can not only improve the performance of aluminum workpieces, but also improve the appearance of workpieces. However, some matters need to be paid attention to after the aluminum oxidation treatment, otherwise the use effect of aluminum workpiece is not good, and even lead to the early damage of aluminum.

Rinse with hot water

The purpose is to age the film layer, but the water temperature and time should be strictly controlled. Processing time is too long also can appear the similar problems, appropriate temperature and time is: temperature of 40 ~ 50 ℃ 0.5 ~ 1 minutes.

Second, the dry

It is better to dry by natural air, and the workpiece washed with hot water is slanted on the shelf, so that the free water on the working surface is straight down to the bottom. The water that flows to the corner edge of lower end USES towel to absorb, the film layer color that is dried by this method is not affected, appear natural.

Three, aging

Aging method according to climate condition to decide, there are in the summer the sun exposure in the sun, the aluminum oxide rainy or winter available oven roasted, process condition is: temperature of 40 ~ 50 ℃ 10 ~ 15 minutes.

Repair of unqualified parts

The unqualified conductive oxide film should be selected before drying and aging process. After drying and aging, the film layer is difficult to be removed and will affect the roughness of workpiece surface. For the unqualified workpieces, we can take the following simple measures to solve.

First, the unqualified workpiece is clamped on the clamping device for aluminum anodization. Then, the anodization process of aluminum in sulfuric acid solution is performed for 2~3min. After the film layer is soft and peeling, the conductive anodization can be re-conducted after the alkali solution is cleaned and the nitric acid is exposed to light.

Aluminum oxide pendulum cesium art requirements artifacts into heat treatment or subject to organic solvent cleaning before welding process, free surface oil, but now can't do it, so form a layer of oil on sintering of coking on the surface of workpiece, this layer of coking content in organic solvents is difficult to remove all, if soaked in lye can cause local corrosion, pitting or cause uneven, seriously affecting the quality of the product.