The transfer rate of the paint sprayed by the robot refers to the proportion of the paint that is finally attached to the surface of the product to the total flow of the paint sprayed from the spray gun, also called the paint rate. The higher the paint transfer rate during robot spraying, the better. Let's share the details of Songle Robot below.

Robot spraying work video

The development history of the entire coating equipment can also be regarded as a history of improving the transfer rate of coatings, because it is closely related to the two themes of coating manufacturing costs and environmental protection. The main parameters that affect the transfer rate of robot spraying include: atomizer type, static electricity level, spraying parameters, conductivity, etc. What kind of spraying equipment is used is the first factor in determining the transfer rate, because the transfer rate of different equipment has obvious differences.

The transfer rate of some major atomizers ranges from small to large: ordinary air spray guns, electrostatic air spray guns, and rotary cups. Static electricity is the second major factor affecting the transfer rate of coatings. The difference between the presence or absence of static electricity and the level of static electricity is very obvious during construction. During electrostatic spraying, the paint particles are charged to cause the paint to adsorb to the workpiece, so the charged particles that reach the surface of the workpiece first need to transfer the charge quickly, maintain the voltage difference between the workpiece surface and the spray gun, and ensure that the space electric field strength between the two is effective for the paint transfer Rate is very critical.

This adds another factor, that is, the grounding state of the workpiece directly affects the transfer rate of the paint. This factor is especially obvious when spraying workpieces with poor conductivity, such as plastic bumpers. Tests have shown that when using ROBOBEL spray paint, the transfer rate of generally grounded and well grounded products differs by 10% to 20%. For example, the measured transfer rate of ROBOBEL625 when spraying SVW2000 threshold strips grounded by metal clips is about 70%, but only about 50% in the case of poor grounding. For air spray guns, the atomization air pressure has a greater impact on the transfer rate. Excessive atomization pressure will increase the rebound airflow after the air is sprayed on the sprayed surface, preventing subsequent small paint particles from reaching the sprayed surface, resulting in a decrease in the transfer rate.