Galvanization - Indian Laws - General

Words galvanization and galvanize As per Webster s Third New International Dictionary Unabridged, Vol. I, page 932 galvanization - the act or process of galvanizing; the application of an electric current to the human body for medical purposes. galvanize - 1 a. to subject to the action of an electric current, b. to arouse, stimulate, or excite as if by the application of an electric current; 2: to coat (iron or steel) with zinc-compare Electro galvanize. The Oxford English Dictionary, Volume IV, page 33 Galvanization - 2. The state of being galvanized. Galvanize - 2. To cover with a coating of metal by means of galvanic electricity. Commonly but incorrectly applied to the coating of iron with zinc to protect it from rusting, though no galvanic process is ordinarily employed. Longman Dictionary of Contemporary English by Chief Editor Paul Procter, page 467) galvanize - to put a covering of metal esp. zinc, over (a sheet of another metal, esp. iron), by using electricity: galvanized iron-compare Electroplate 2. to shock (someone) into action: The fear of losing his life galvanized him (into fighting back). The term is defined in the Condensed Chemical Dictionary as hereunder: galvanizing: Coating of a ferrous metal by passing it through a bath of molten zinc or by electrodeposition of zinc. In the former process, the iron and zinc combine to form an inter-metallic compound at the interface the outer surface being relatively pure zinc, which crystallizes as it cools to form the characteristic spangle . The electrodeposition method gives a uniform surface which may be either dull or bright. Duration of corrosion protection is directly related to the thickness of the zinc coating. See also sacrificial protection. The treatise Nomenclature-Explanatory Notes , Second Edition (1966), published by Customs Co-operation Council considered to be authority on the subject explains the requirements of galvanization thus: Semi-manufactures and articles of iron or steel are commonly subjected to various treatments to improve the properties or appearance of the metal, protect it against rusting and corrosion, etc. Such treatments, which do not affect the heading in which the goods are classified, include: (1) Annealing, tempering, case-hardening (by cementation) and similar heat-treatments or nitriding to improve the properties of the metal. (2) Descaling, pickling, scraping or other processes to remove the oxidation scale and crust formed during the heating of the metal; rough coating to prevent rusting (e.g., with oil grease, tar or red lead). (3) Finishing treatments (polishing, burnishing, glazing, artificial oxidation, phosphatizing, etc.). Metallization, for example: by cementation with zinc (sherardizing), or with aluminium, etc.; by electroplating (copper, chromium, nickel, cadmium, gold, silver-plating, etc.); by immersion in a bath of molten metal (e.g., zinc, tin or lead). Coating with non-metallic substances (enamelling, painting, lacquering, etc.); surface printing; etc. But, it is to be noted that insulated electric wire, cable, bars, etc., are excluded..... Indian Standard Specification for Hot-Dip Zinc Coatings on Steel Tubes published in 1978 by Indian Standards Institution, New Delhi, neatly brings out the necessity for galvanization thus: 0.2. The hot-dip galvanizing process is very widely used for obtaining protection against corrosion of a large variety of ferrous products. This standard has been formulated with a view to achieving efficient and economic protection of steel tube by a hot-dip galvanized coating of adequate and uniform thickness. ASSOCIATED MECHANICAL INDUSTRIES VERSUS COMMISSIONER OF COMMERCIAL TAXES, BANGALORE - 1986 (1) TMI 369 - KARNATAKA HIGH COURT