Aluminum alloy passivation in the process and temperature plays a very important role in the passivation effect, the influence of temperature exists in the passivation pretreatment and passivation process, to do a good job in aluminum alloy passivation, can not ignore the important element of temperature, so it is necessary to discuss the influence of temperature in the passivation process.

Firstly, the influence of degreasing temperature on the degreasing effect must be paid attention to when the aluminum alloy passivation process is pretreated. In order to ensure the surface of the workpiece is clean without grease, the temperature must be controlled when degreasing. If the temperature is too high, the activated agent in the degreasing agent will decompose due to high temperature, and the active agent will disappear, resulting in poor degreasing effect.

Secondly, aluminum alloy passivation process, the other a process affected by temperature is the temperature of the passivation solution, with the water temperature in south China region, typically between 10 to 22 degrees, the temperature range, the passivation solution can be normal use, but in special weather or the northern region winter of our country, the water temperature may be below 10 degrees, the temperature range, the passivation effect will be more bad, so must be heat treatment; In addition, in order to improve the corrosion resistance of aluminum alloy, can also take the way of heating treatment, but zui high temperature does not exceed 40 degrees, otherwise, the passivation effect is not good.

It can be seen that the temperature is very important in the aluminum alloy passivation process, it is related to the success and failure of the passivation process, must cause the potion supplier and the use of manufacturers attention.