ã€China Aluminum Network】 Four points to note in the aluminum oxide post-treatment process:
(1) Wash with hot water. The aim of hot water washing is to age the film. However, the water temperature and time must be strictly controlled. The water temperature is too high and the film thickness is reduced. If the treatment time is too long, similar problems as above may occur. The suitable temperature and time are: temperature 40-50°C time 0.5- 1MIN
(2) Drying. It is better to dry and dry naturally, and the workpieces that are filled with hot water are slung on the shelf and let the free water on the working surface flow straight downward. The water droplets flowing to the lower corners are sucked off with a towel, and the color of the film dried in this way is not affected and appears natural.
(3) Aging. The aging method can be determined according to the weather conditions. There is sunlight in the summer can be exposed to sunlight, rainy days or winter can be oven baking, the process conditions are: temperature 40 ~ 50 °C time 10 ~ 15min
(4) Rework of defective parts. Unqualified conductive oxide film should be singled out before the drying and aging process, because the film is difficult to remove after drying and aging and will affect the roughness of the workpiece surface. The author of this problem has carried out some groping in the process, after a variety of methods and found that using the following methods works well, the method is simple, without affecting the surface quality of the workpiece, the specific process is as follows. First, the unqualified workpiece is clamped on the aluminum anodizing jig, then anodized in the sulfuric acid solution of aluminum in anodizing method for 2 ~ 3min, until the film layer is soft, shedding, and then slightly washed by alkali solution and nitric acid After the light is released, the conductive anodization can be resumed.
This aluminum alloy ladder is light, handy, and easily portable. It is equipped with the hook, the D shaped anti-skid ladder rung, as well as the anti-skid tape of telegraph pole.
Our working platform is aluminum alloy frame style. The item number is 22251. This product can be used on the tension support for balance line, high altitude crimping, and other operation. When the load is excessive, the number of lifting rope should be increased and a test is taken. This rope is supposed to fasten the bottom material.
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