Three points to note in the pre-spraying process:

One: What is spraying? Spraying is a coating method that is dispersed into uniform and fine droplets by means of pressure or centrifugal force through a spray gun or disc atomizer, and is applied to the surface of the object to be coated.

Two: Hardware spraying process selection. Hardware spraying can be divided into air spraying, airless spraying, electrostatic spraying and various derivative methods of the above basic spraying forms, such as large flow and low pressure atomizing spraying, thermal spraying, automatic spraying, multi-group spraying, etc. The spray treatment method should be determined according to the use of different materials.

Three: Conventional hardware stroller non-standard screw spraying pretreatment. Degreasing and degreasing→water washing→pickling and rust removal→water washing→neutralization→water washing→surface conditioning→phosphating→water washing→drying→coating/ie electrostatic powder spraying (the time used for degreasing, degreasing, pickling and rust removal under normal conditions is every Road craft must be greater than 25 minutes).

1: When there is no rusted workpiece, the processing flow is as follows. Pre-degreasing → degreasing → hot water washing → cold water washing → cold water washing → pre-conditioning → surface conditioning → phosphating → cold water washing → pure water washing (1) → pure water washing (2).

2: When there is a rusted workpiece, the processing flow is as follows. Pre-degreasing → degreasing → hot water washing → cold water washing → pickling → cold water washing → surface conditioning → phosphating → cold water washing → pure water washing (1) → pure water washing (2)

www.junlygroup.com