Measuring the thickness of anti-rust coatings on urban outdoor metal furniture is crucial for ensuring longevity and corrosion resistance. Several reliable detection methods are commonly employed. Magnetic induction coating thickness gauges are ideal for ferrous substrates, using magnetic principles to measure non-magnetic coating layers. Eddy current testing works on non-ferrous metals like aluminum by generating electromagnetic fields. Ultrasonic thickness gauges provide precise measurements through sound wave reflection analysis, suitable for various metal types. For laboratory precision, cross-sectional microscopy involves cutting samples and examining coating layers under magnification. Additionally, destructive dry film methods like the Tooke gauge create physical incisions to measure coating depth. Regular verification using these techniques helps maintain structural integrity and aesthetic appeal of public benches, railings, and decorative fixtures exposed to urban weather conditions. Proper measurement ensures compliance with ISO 2808 and ASTM D7091 standards for protective coatings.
What are the detection methods for the anti-rust coating thickness of urban outdoor metal furniture?
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