G23 – 90 Standard Practice for Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of Nonmetalic Materials. ASTM CA, Type I are minimum Parex Molded Expanded Polystyrene ASTM C C ASTM .. ASTM G23 – ACCELERATED WEATHERING TEST . Document Name: ASTM G Standard Practice for Operating Light CFR Section( s): Standards Body: Exposure Apparatus (Carbon Arc Type) With and Without.
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Accelerated UV Testing I saw that as well Hg, but I’m not sure if the anodizing process would be considered a related coating to paint. Accelerated UV Testing ‘Non-metallic’ isn’t a problem; it refers to the anodic coating, not the substrate. MIL-AF has the following on light fastness tests: Class 2, dyed anodic coatings, shall show no more fading or discoloration than would be equivalent to a Delta E value of 3 when subjected to the light fastness resistance test see 4.
Test specimens, prepared in accordance with 4. After exposure, specimens shall be compared with duplicate specimens not exposed to a light source for the same period of time to determine the Delta E value in accordance with ASTM D The G233 E value shall be used to determine conformance with 3.
The material is tested before and after exposure to these conditions for flammability, mechanical impact and mechanical strength. Architechural aluminum is usually dyed by the ‘two-step’ process.
After anodizing, the racks of parts are transferred to a solution of metallic frequently tin salts.
An electrolytic process is then used to change the oxidation states of cation which have entered the anodize pores. These inorganic 2g3 are much more UV-resistant than the simple immersion metallo-organic dyes used by nearly all anodize jobshops.
The dye manufacturers Clariant, US Specialty Color have tech bulletins for each dye with colorfastness ratings scale of for architechural use. Those suitable for architechural include ‘Sanodal’ in the name [Clariant was spun off from Sandoz], e.
Other dye supplier are familiar with Clariant dyes. Accelerated UV Testing Talk to a galvanizer. See if they do any exposure testing and if so, what standards they use. Accelerated UV Testing For vehicles, these are standard: Red Flag This Post Please let us know here why this post is inappropriate.
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Register now while it’s still free! Close this window and log in. Are you an Engineering professional? By joining you are opting in to receive e-mail. Promoting, selling, recruiting, coursework and thesis posting is forbidden. I’ve been running around in circles, and I hope someone here can help me astk. My v23 acquired a product line from a company we purchased, and they have specified an architectural anodize process AA-MCA34, Class II, Black for components that are used in the transit industry.
Accelerated UV Testing – Corrosion engineering – Eng-Tips
I need to identify some form of accelerated UV testing to determine if our process will perform equal to their architectural process. I need to simulate 12yrs of outdoor weather exposure.
Can someone simply help me see the light on this subject or recommend a proper test specification that I should test to? Aastm saw that as well Hg, but I’m not sure if the anodizing process would be considered a related coating to paint. Talk to a galvanizer. For vehicles, these are standard: Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
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