In the actual production of wood panel coating operation, I believe that the problem of paint hanging for many manufacturers is no stranger. What is the sag? The image is a little paint spray paint uneven, local thick film, ranging from the drop-like, while the local appearance of the corrugated or seawater receded the shore sand grain-like, very affect the beauty of the paint.
First, the analysis of the reasons for the emergence of coating sag, the main summary of the following points:
1, spray atomization and fan-shaped air compression is too small.
2, gun and workpiece transfer workpiece bit too close, and the speed is too slow.
3, the surface temperature of the plate and the coating ambient temperature is too low, the humidity is very high
4, paint the viscosity is insufficient
It can be seen that the reasons for sagging are very detailed production problems, so the details of the grasp is critical.
Second, the Sen proposed solution:
In general, the overall inspection and monitoring can be carried out with reference to the following ways to prevent the occurrence of sagging problems, which is particularly important before mass production to avoid greater losses.
1, adjust the air flow to set the atomization and fan per minute
2, in accordance with the manufacturer's operating instructions set the operation and distance parameters
3, to strengthen the sheet metal substrate pretreatment, conditional special dedicated spray paint room, control the indoor temperature
4, the deployment of paint to master a good proportion of a variety of paint the mutual nature.
According to Sener for many years with the customer's exchange and practical operation, summed up some of the above key points hope to give the majority of production enterprises to provide useful reference, seize the center, and then carefully visit the production process which did not do the details, Effectively avoid the wooden doors in the process of painting the problem of hanging.
Apr-10-2017