Zinc series (immersion) - car seats

The zinc-based (immersion) process used in the production of automotive seats usually refers to the zinc-based phosphating immersion process, which is mainly used for the surface treatment of metal parts of seats. The following is an introduction to the process principle, processing flow, advantages and disadvantages:

Process principle

Zinc phosphating is a process of forming a phosphate chemical conversion film through chemical and electrochemical reactions. The metal parts of the seat are immersed in a phosphating solution containing zinc ions, phosphate ions and other additives. Under certain temperature and time conditions, the metal surface reacts with the phosphating solution to form an insoluble phosphate protective film, the main component of which is zinc phosphate and its hydrate. This protective film can improve the corrosion resistance and wear resistance of the metal surface, provide a good base for subsequent coating and other processes, and enhance the adhesion between the coating and the metal surface.

advantage

Good corrosion resistance: The zinc phosphating film can effectively isolate the metal from the external environment, prevent the corrosion of the metal by moisture, oxygen and other corrosive substances, thereby improving the corrosion resistance of the metal parts of the car seat and extending its service life.

Enhance coating adhesion: The phosphate film has a porous structure, which can increase the roughness and specific surface area of the metal surface, so that the subsequent paint, coating and other coatings can better adhere to the metal surface, improve the adhesion and bonding force of the coating, and reduce the phenomenon of coating shedding and blistering, thereby improving the appearance quality and durability of car seats.

Lower cost: Compared with some other surface treatment processes, such as electroplating and chemical plating, the cost of zinc phosphating immersion process is lower. The raw materials of phosphating solution are relatively cheap, and the process equipment is relatively simple, and the operating cost is not high. It is suitable for large-scale industrial production and can reduce production costs while ensuring product quality.

Easy to operate: The operation of this process is relatively simple and easy to master and control. By adjusting the composition, temperature, pH value and immersion time of the phosphating solution, the thickness and quality of the phosphating film can be easily controlled to meet the surface treatment requirements of different automotive seat metal parts.