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Treatment of materials
surface treatment of ferrous alloy, other metallic or non metallic parts and materials, namely, electrochemical treatment, salt bath treatment, nitriding treatment, oxidising treatment, thermochemical treatment, thermochemical diffusion treatment, heat treatment, diffusion heat treatment, electrolytic or chemical surface conversion treatment, passivation treatment, surface impregnation treatment with organic compounds, metal diffusion treatment, physical vapour deposition treatment, vacuum deposition treatment, electrolytic coating, electroplating, ferrous alloy coating or plating treatment, coating or plating treatment by mechanical means, metal treatment, nickel plating, chromium plating, zinc plating, tin plating, silver plating, gold plating, tin-lead alloy plating, zinc-tin alloy and metal coating or plating treatment, copper-tin alloy coating treatment, chromium-nitride coating treatment, phosphorous-nickel alloy base coating treatment, cathode sputtering coating treatment, oil treatment, hardening, tempering, quenching; coating and plating of metals; nickel plating; chromium plating; zinc plating; tin plating; silver plating; gold plating; metal tempering; burnishing by abrasion; millworking; grinding; soldering; brazing; surface treatment by applying dry film lubricants or organic coatings containing solid lubricants or polymers, surface treatment by applying organic-metallic coatings, surface treatment by applying metal and metal alloy coatings with electric-arc spraying, surface treatment by applying metal, ceramic or cermet coatings with plasma-arc spraying