Is metal spraying the same as plastic spraying? What is the difference?

Plastic oil injection is a surface processing method which heats the hot oil injection material to a molten or semi-molten state through a heat source, sprays it on the surface of the workpiece after being atomized by high-pressure airflow, and forms a special coating on the surface of the workpiece, which is called hot oil injection.

The so-called hardware spray is to spray oil on hardware materials. The spraying method is basically the same.

Also, the temperature of plastic and hardware is different, and the temperature of hardware is higher than that of plastic (provided by Xiong Hui Electronics).