When most sprayers use automatic spray guns to spray, t […]
When most sprayers use automatic spray guns to spray, they only teach themselves by the way the master teaches the disciples. There is no clear calculation formula to express, only the experience that can be derived slowly from every failure. Once a technical expert from an Italian spray gun manufacturer came to China to exchange paint technology with technicians in the automotive repair industry in China. Under the guidance of experts, the following data can be obtained to give the best atomization effect:
1. The viscosity of the paint should be adjusted to 17 to 20 seconds (simple coating 4 cups), and the spray knob is turned to the maximum;
2. Tighten the paint flow rate adjustment knob, and then turn it back 2.5 points, turn the compressed air adjustment knob of the gun to the maximum, and adjust the pressure gauge to 2.5 to 2.5 bar;
3. The distance between the nozzle of the spray gun and the workpiece is twenty centimeters. The nozzle of the spray gun and the workpiece should be kept at a right angle of 90 degrees, and the running speed of the spray gun is about 80 centimeters per second;
4. The overlap of spray pattern is fog spray and flat spray, which is two to eleven, wet spray is two thirds. Due to the different facilities used, the time interval is different from the local climate at that time, depending on the actual situation.