Several problems needing attention in the spraying

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Several problems that should be paid attention to in aluminum alloy spraying operation

1 production of fixture and selection of feeding method. The clamps hung at both ends shall be able to bear the pressure of considerable weight; The size of the contact point between the fixture and the outer surface of the profile shall be minimized during the manufacturing and use of the fixture used in the middle part, and the hanging rod placed vertically in the middle part shall be powdered in time. The hanging position in the hanger of profiles should also follow the corresponding principles. For some profiles with deep grooves, it is applicable to increase the powder amount and push the distance between the spray claw and the profile closer. The surface with large surface area or complex structure shall not be placed in the downward position, and the decorative surface and non decorative surface of the profile shall be distinguished at the same time

you can also purchase multiple sets of equipment for production at the same time. For some profiles with special shapes, adjust the position of the fixture in time to maintain a certain tilt angle at the position of the hanger, so as to enhance the stability during operation and facilitate powder adsorption. In addition, for some heavy profiles, when using the fixture in the middle position, the elbow part should have a certain radian. The radian of the fixture can ensure that the profiles are in the vertical position and ensure the smooth production process. In addition, with the increase of recycling times of conductive beams and hangers, the film will accumulate more and more. The coating itself is non-conductive, which will affect the conductivity of the conductive beam and hanger, and then affect the uniform distribution of powder on the surface of the profile. The coating on the conductive beam and hanger should be removed in an appropriate way

2 the pretreatment process is simpler than the ordinary pretreatment process before oxidation, mainly for degreasing and chromizing, with low raw material consumption and relatively easy daily maintenance. In the process of pretreatment, in order to improve production efficiency and reduce energy consumption in the drying process, large natural analog-to-digital (a/d) conversion circuits are used to disperse the imitation quantity into digital quantity racks, and as many profiles to be processed as possible. For some soft profiles, the cross bar should be placed in the middle of the profile, so that the groove part can be placed upward as far as possible, which is conducive to the evaporation of water. When there is still water residue after the drying process, in order to avoid damaging the chrome film on the surface of the profile and the profile is easy to deform when the temperature is too high, it should not be baked in the furnace, but can be dried by cooling or blowing with an air gun (without oil and gas). In addition, the profile must be properly tilted in and out of each slot and in the process of drip drying. Some enterprises are also engaged in 3D printing silicone angle, but it is easy to cause some profiles to slip, so a piece of stainless steel wire should be bound at one end of the rack as a preventive measure

3 problems needing attention in spray room. Before the formal powder spraying, you can try it several times. At this time, you can observe the powder amount and the uniformity of the powder distribution at both ends of the spraying room. LANXESS will further expand the production of high-performance materials in Germany. 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 surface of the profile is actually the powder with this atomization effect. Whether there is such atomized powder is the standard to control the distance between the spray claw and the profile

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