According to GB/T 1345.2-92 and ISO 2808-1984, the wet film thickness of a coating is measured using a wheel gauge. This method involves rolling the device across the surface of the wet paint, and the thickness is determined by reading the scale on the wheel, which is typically marked in micrometers (μm). This technique is widely used for measuring the wet film thickness of paints, coatings, and varnishes. The equipment required includes a wheel gauge that is engraved with markings ranging from 0 to 100 μm, starting from the rounded edge and extending toward the center of the wheel. The wheel gauge is constructed from stainless steel, ensuring durability and accuracy during repeated use. This tool is essential for quality control in the painting and coating industry, as it allows for quick and reliable measurements without damaging the coated surface. It is especially useful in industrial settings where precise application of coatings is critical for performance and aesthetics. Proper calibration and regular maintenance of the wheel gauge are recommended to ensure consistent and accurate results over time.
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