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Temperature control of silicon zirconium coating agent is an important parameter for medium-temperature phosphating

2022-12-29 08:13:26
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Phosphorus-free ceramic is a chemical material in chemical production activities, and it has many types. Different types of phosphating agents play different roles in different environments. The temperature of phosphating is an important parameter of phosphating control, which has an important impact on the formation of products. So how is the specific phosphating temperature controlled? Let's get to know Xiao Bian now.


The phosphating temperature is an important parameter of phosphating control, which has an important impact on the formation of phosphating film. The medium temperature phosphating temperature has a significant impact on the phosphating film formation speed. This is because of the ionization balance in the phosphating solution, which is an endothermic process. Therefore, the temperature rises, the balance shifts to the right, and the film formation speed increases. However, too high temperature will result in thick and rough phosphating film and increased sediment. Therefore, reducing the phosphating temperature is not conducive to phosphating. At this time, some phosphating films are sparse, poor corrosion resistance, and even easy to rust.


Generally speaking, different phosphating solution formulations have different phosphating temperatures, but generally speaking, the higher phosphating temperature of the phosphating agent is conducive to the formation of the phosphating film. Because of the higher temperature, the faster reaction speed, the shorter phosphating time. However, too high temperature will ionize a large amount of Zn2+and PO43 - to form Zn3 (PO4) 2 sediment, resulting in ineffective consumption of phosphating agent and easy to make the workpiece hang ash.


Through the introduction of the article, we know the importance of phosphating temperature control. Improper temperature control is likely to affect the formation of phosphating film. Chunlei Haoyu Chemical provides all kinds of phosphating agents, which are widely used, but the correct use is very important. I hope our introduction will help you!


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