Precautions for coating production line

1. Attention should be paid to the installation of painted objects on the coating production line. Plan the hanger and the method of mounting the object on the coating production line through trial dipping in advance to ensure that the workpiece is in the best position during the dipping process. The largest plane of the object to be coated should be straight, and the other planes should present an angle of 10° to 40° with the horizontal, so that the remaining paint can flow out smoothly on the painted surface.

  2. When painting, in order to prevent the solvent from spreading in the workshop and prevent dust from being mixed into the paint tank, the dipping tank should be maintained.

  3. After the large objects are dipped and coated, they should wait for the solvent to completely evaporate before sending them into the drying room.

  4. In the process of painting, pay attention to the viscosity of the paint. The viscosity should be tested 1-2 times per shift. If the viscosity increases by 10%, it is necessary to add solvent in time. When adding the solvent, the dip coating operation should be stopped. After mixing uniformly, check the viscosity first, and then continue the operation.

   5. The thickness of the paint film determines the advancing speed of the object on the coating production line and the viscosity of the paint solution. After controlling the viscosity of the paint solution, the coating production line should determine the appropriate forward speed according to the maximum speed of the paint film about 30um, and according to different equipment, experiments. At this rate, the object to be coated is evenly advanced. The advance rate is fast, and the paint film is thin; the advance rate is slow, and the paint film is thick and uneven.

  6. ​​During the dip coating operation, sometimes there may be differences in the thickness of the paint film being coated and the lower part, especially thick accumulation on the lower edge of the coated object. In order to improve the decorativeness of the coating, when dipping in small batches, brush techniques need to be used to remove the remaining paint drops, or centrifugal force or electrostatic attraction equipment can be used to remove the paint drops.

  7. When dipping the wooden parts, pay attention to the time not too long to avoid the wood sucking in too much paint, resulting in slow drying and waste.

   8. Enhance ventilation equipment to avoid solvent vapor damage; pay attention to the arrangement of fire prevention measures and regularly check the coating production line.

Post time: Aug-03-2021