Precautions in the Production of Industrial Aluminum Profiles
Category： Industry News
1. Precautions in the powder-coating booth: Before commencing formal powder application, perform several test sprays. During these tests, observe the powder flow at both ends of the spray gun and assess the uniformity of powder distribution. The powder within 10 cm of the spray nozzle tip travels in a straight line; the powder that adheres to the profile surface is precisely this atomized powder. Whether or not such atomized powder is produced serves as the criterion for controlling the distance between the spray gun and the profile.
1. Precautions in the powder-coating booth: Before commencing formal powder application, perform several test sprays. During these tests, observe the powder output at both ends of the spray gun and assess the uniformity of powder distribution. The powder within 10 cm of the spray nozzle tip travels in a straight line; the powder that adheres to the profile surface is precisely this atomized powder. Whether or not such atomized powder is produced serves as the criterion for controlling the distance between the spray gun and the profile.
2. Fixture fabrication and material-loading method selection: Fixtures used for hanging at both ends must be capable of withstanding substantial compressive loads; for fixtures employed in the mid-section, the contact area between the fixture and the outer surface of the profile should be minimized during both fabrication and operation, and powder replenishment at the vertically oriented hanging rod in the middle should be performed promptly. In addition, the positioning of the profile within the fixture must adhere to the relevant principles.
3. The pre-oxidation pretreatment process is relatively simple, mainly consisting of degreasing and chromating, with low raw material consumption. To enhance production efficiency and reduce energy consumption during the drying stage, industrial aluminum profiles are typically loaded onto larger racks to maximize the number of profiles processed at one time.
4. Once the drying process is complete but some moisture still remains, in order to avoid damaging the passivation film on the profile surface and preventing deformation caused by excessive temperature, the profile should no longer be placed back into the oven for further drying. Instead, it can be allowed to air-dry or dried using a compressed-air gun.
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