Aluminum alloy airport chair metal parts need to prepare before spraying process

by:OUHE     2020-06-04
Aluminum alloy spraying airport chairs, waiting chairs hardware fittings need to prepare before the five common process 1. Weather conditions: coating construction must choose in good weather conditions, in the rain, fog, snow, or larger dust under the condition of construction is forbidden, spraying construction about the most appropriate temperature 25 ℃, humidity below 80% RH. 2. Substrate processing: aluminum alloy substrate should burnish, such as oxidation processing first. Surface should be cleaning, degreasing, and ensure clean and dry with no dirt, dust free, fill and level up, such ability to paint spraying, and to ensure that the substrate before spraying dry. 3. Spray gun standard: spray can choose diameter of 1. 5 - 2. 0 mm gun, spray gun pressure should be adjusted to 3 - 4kg/cm2。 The fog to pressure to 3 - 4kg/cm4. Wet the surface as far as possible, uniform spraying 2 - 3 times. Measured hours to properly adjust the volume of oil, the oil film surface prone to particles. 5. Air compressors and air compressor: before construction, should look after water filter to avoid any film pinhole.
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