Claiming a surface hardness of around 1,900 Vickers (compared to 800 Vickers for standard case hardened pin chains), Delta(reg)-treated drive chains extend service life in abrasive environments. Developed by the French company SEDIS, the Delta thermochemical treatment process resembles chrome hardening. Atomic chromium combines with the steel in treated parts to create a surface that is integral to the pin material. This prevents the risk of flaking associated with electrolytic chrome plating. In addition, the high-temperature diffusion process produces surfaces of regular thickness adhering to the substrate. After treatment, metal at the center of the part remains unchanged, producing a highly resistant, hardened and tempered steel. The surface is covered with a complex chromized coating made up primarily of extremely hard chrome carbide. Typical applications: power transmission, conveyors, and lift equipment. Call Jen-Georges Bernhard at +33-3-25-76-29-50
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