What are the inspection standards for color coated rolls

Inspect the appearance of the color coated roll, including the smoothness, color, and absence of obvious scratches, dents, bubbles, foreign objects, etc. on the coating surface. The appearance requirements should meet the product specifications and relevant national standards.

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Color coated roll (color coated roll) is a metal material with high decorative, anti-corrosion, and weather resistance, widely used in fields such as architecture, home appliances, and automobiles. The inspection standards for color coated rolls mainly include the following aspects:
Appearance quality
Inspect the appearance of the color coated roll, including the smoothness, color, and absence of obvious scratches, dents, bubbles, foreign objects, etc. on the coating surface. The appearance requirements should meet the product specifications and relevant national standards.
Dimension and Tolerance
Check the width, thickness, length and other dimensions of the color coated roll, as well as whether its tolerance meets the product specifications and relevant national standards.
Coating performance
The coating performance includes coating thickness, adhesion, hardness, wear resistance, corrosion resistance, etc. The testing of coating performance should be carried out in accordance with relevant national standards and industry norms.
Weather resistance
Weathering resistance refers to the anti-aging, UV resistance, salt fog resistance, moisture resistance and other properties of color coated roll in the natural environment. Weather resistance testing can refer to relevant standards and specifications.
Mechanical properties
Mechanical properties include bending, tensile strength, yield strength, elongation, etc. When inspecting the mechanical properties of color coated rolls, relevant standards and specifications should be referred to.
chemical composition
Inspect the chemical composition of the color coated roll, mainly including the composition of the coating material and the composition of the metal substrate. The detection of chemical composition should be carried out in accordance with relevant national standards and industry norms.

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