1. Fixture making and feeding mode selection. Clamps suspended at both ends shall be able to withstand considerable pressure; The size of the contact point between the clamp and the outer surface of the profile shall be minimized during the production and use of the clamp used in the middle part, and the clamp shall be placed vertically in the middle in time. Replenish powder on the hanger rod. The hanging position in the profile clothes hanger shall also follow the corresponding principles. For some profiles with deep grooves, it is advisable to increase the powder output and push the distance between the spray claw and the profile. The surface with large surface area or complex structure should not be placed below, and the decorative surface and non decorative surface of the profile should be distinguished.

For some profiles with special shapes, the position of the clamp shall be adjusted in time to keep a certain inclination angle of the profile at the hanger position, so as to enhance the stability during operation and facilitate powder absorption. In addition, for some heavy profiles, when using the clamps in the middle position, the elbow should have a certain radian. The curvature of the fixture can ensure that the profile is in the vertical position and the production process is smooth. In addition, with the increase of the cycle times of the conductive beam and hanger, the coating film will be more and more. The film itself is non-conductive, which will affect the conductivity of the conductive beam and hanger, thus affecting the uniform distribution of the powder on the profile surface. The coating on the conductive beam and hanger shall be removed by appropriate methods.

2. The pre-treatment process is simpler than the ordinary pre-treatment process before oxidation, mainly for degreasing and chromate treatment, with low raw material consumption and relatively easy daily maintenance. In the pretreatment process, in order to improve the production efficiency and reduce the energy consumption in the drying process, large racks are often used to load as many profiles to be treated as possible. For some soft profiles, more cross bars should be placed in the middle of the profile, and the groove should be placed upward as far as possible to facilitate the evaporation of water. When there is still water residue after drying, to avoid damaging the burning film on the profile surface, the profile is easy to deform when the temperature is too high, and should not be put into the oven for baking. (no oil and gas). In addition, proper inclination angle must be maintained when the profiles enter and exit each slot and during the dripping process, but it is easy to cause some profiles to slip. As a precautionary measure, one end of the rack shall be bound with stainless steel wire mesh.

3. The problems that should be paid attention to in the painting room during metal spraying processing in the painting factory. Try spraying several times before formal spraying. At this time, the size of powder spraying amount and the uniformity of powder distribution at both ends of the spray booth can be observed. At this time, the powder runs in a straight line within 10cm from the end of the spray claw, and the other part exists in the form of atomized powder. The powder adsorbed on the profile surface is actually the powder with this atomization effect. The distance between the nozzle and the profile is controlled according to the effect of the powder.