company news about Several problems should be paid attention to in aluminum alloy spraying operation

1. The making of fixture and the selection of feeding method. The fixture hanging at both ends should ensure that it can withstand considerable weight pressure; In the process of making and using the fixture used in the middle part, the size of the contact point between the fixture and the outer surface of the profile should be reduced as far as possible, and the hanging rod part placed vertically should be supplemented in time. The position of the hanging device in the profile should also follow the corresponding principle. For some profiles with deep grooves, increasing the amount of powder and pushing the distance between the spray claw and the profile are suitable. Surfaces with large surface areas or complex structures should be prohibited from being placed in a downward position, and the decorative and non-decorative surfaces of profiles should also be distinguished. For some special shapes of profiles, timely adjust the position of the fixture, so that the profile in the position of the hanging device to maintain a certain tilt Angle, in order to enhance the stability of the operation process, easy powder adsorption. In addition, for some heavier profiles, when using the fixture in the middle position, the elbow part should have a certain arc, and the curvature of the fixture can ensure that the profile is in a vertical position to ensure a smooth production process. In addition, the conductive beam and hanger will accumulate more and more with the increase of the number of cycles. The coating itself is non-conductive, which will affect the conductivity of the conductive beam and the hanger, and then affect the uniform distribution of the powder on the surface of the profile. The coating film on the conductive beam and the hanger should be removed in an appropriate way. 2 The pre-treatment process is more simple than the ordinary pre-treatment process before oxidation, mainly for degreasing and chromium, raw material consumption is low, and daily maintenance work is relatively easy. In order to improve production efficiency and reduce energy consumption in the drying process, large racks are used to install as many profiles to be treated as possible. For some soft profiles, a cross bar should be placed in the middle of the profile, so that the groove part is placed upward as far as possible, which is conducive to the evaporation of water. When the drying process is completed, there is still water remaining, in order to avoid destroying the surface of the profile film and deformation of the profile when the temperature is too high, it should not be put into the furnace to bake, can be used to cool dry or air gun (no oil and gas) blow dry. In addition, the profile in and out of each slot and in the drip drying process, must maintain the appropriate tilt Angle, but it is easy to cause some profiles to slip, should be used in a certain end of the rack part of a stainless steel wire mesh as a preventive measure. 3 Problems that should be paid attention to in the spray room. Before the formal powder spraying, you can try to spray several times, then you can observe the size of the powder amount and the uniformity of the powder distribution at both ends of the spray room. At this time, the powder runs in a straight line within 10cm from the end of the spray claw, and the other part is in the form of atomized powder. The powder adsorbed on the surface of the profile is actually the powder of this atomization effect. Whether there is a powder of this atomization effect is used as a standard to control the distance between the spray claw and the profile.