Dust Collector Filter Cage Spraying Method
As the skeleton of the bag dust collector, the importance of its quality is self-evident. So how can the performance of the dust collector framework be strengthened? Electrostatic painting of the dust collector framework is a good protection measure, which will be much better than the general galvanized dust collector framework.
- The galvanized dust collector framework is easily affected by environmental factors and thus corrodes, which directly reduces the life of the bag dust collector and the dust bag
- The adhesion and mechanical strength of the dust collector frame will increase after printing
- The frame of the dust collector after spraying can endure higher temperature
- Due to the spraying, the surface is smoother, which is conducive to installation
The principle of spraying the dust collector framework: the use of corona discharge phenomenon to make the powder coating adsorb on the workpiece. The process is as follows: the powder coating is sent to the spray gun by the compressed air gas from the powder supply system, and the high voltage generated by the high-voltage electrostatic generator is added to the front of the spray gun. Due to the corona discharge, a dense charge is generated near the powder, and the powder is sprayed from the nozzle. At this time, the charged paint particles are formed, which are attracted to the workpiece with the opposite polarity by the electrostatic force. As the sprayed powder increases, the charge accumulation is more. When it reaches a certain thickness, due to the electrostatic repulsion effect, it will not continue to adsorb, so that the entire workpiece obtains a certain thickness of powder coating, and then the powder is melted, leveled, and solidified after high temperature, that is, a hard coating film is formed on the surface of the workpiece.
In fact, spraying the dust collector skeleton is mainly to pay attention to the previous oil removal, rust removal and phosphating. When spraying, the polyester powder is preferably used, and the temperature is controlled between 180-260 degrees Celsius. After curing at high temperature, cooling is required.
