Overfladefinish

Overfladefinish, or surface finish, is the final treatment applied to a material’s surface to achieve the desired visual appearance and set functional properties such as hardness, wear resistance, corrosion protection, and friction. It covers both how a surface looks and how it behaves, including texture, reflectivity, color uniformity, and the presence of coatings or treatments.

Common types include visual finishes, which determine appearance (gloss levels from high-gloss to matte, texture such as brushed or satin), and functional finishes, which provide protection or enhanced performance through coatings or surface treatments. Finishing can involve mechanical methods (grinding, sanding, polishing, buffing, brushing), chemical methods (etching, passivation, pickling), and coating or plating processes (paint, varnish, powder coating, electroplating, anodizing, PVD/CVD coatings, thermal spraying). Surface texturing and laminates may also be used to tailor tactile and optical properties.

Measurement and specification play a central role. Visual appearance is often described by gloss, measured with a gloss meter at standardized angles, and color uniformity. Surface roughness is quantified by parameters such as Ra and Rz using profilometry. Engineering drawings and specifications may designate finish requirements with roughness values or finish symbols, influencing fit, function, and aesthetics.

Applications span automotive, electronics, furniture, machinery, and construction. The choice of overfladefinish balances aesthetics, ease of cleaning, environmental considerations, cost, and performance in the intended environment. Standards from ISO and other bodies address roughness, gloss, and color measurements to ensure consistency and comparability across products.