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Galvanizing linear materials

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Apparatus for hot dip galvanizing iron metal outside surfaces of tubular form linear element, comprising reservoir of molten zinc, inert gas enclosure; annular nozzle trough in which elements are advanced; temp. control for Zn; means for pre-heating elements to above that of reservoir; means for effecting flow of Zn from reservoir through central opening of nozzle to create jet of molten Zn converging on element; and means for driving element so that every point of outside surface of element makes contact with jet of Zn for <0.1s,

Galvanizing Plant and Operation (Part 1)

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Discussion on prec. papers. Queries on process simulation and limitations of computers

Galvanizing, Sherardizing & other Zinc Diffusion Coatings

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Transl'n from Russian (1972), in ass'n with Zinc Dev't Ass'n; reprinted 1980. Brief information on Zn & its properties. Phase diagram of iron-zinc system. Physico-chemical conditions & methods for formation of zinc coatings on iron & steel; structure of zinc coatings obtained by various methods; Zinc coating in powder mixtures; Zn diffusion coating by vapour phase method (sherardizing); powder mixtures; effect of chemical composition of steels on thickness & structure of zinc coating; effect of temperature & time on thickness, structure & properties of coating; diffusion in hydrogen & ammonia; vacuum method of Zn diffusion coating; change in weight & dimensions of items after Zn diffusion coating in H, ammonia or vacuum. Technology of Sherardizing process; Zinc coating of steel tubes & iron castings. Hot Dip Galvanising. Reaction of iron & steel with molten zinc; formation of iron-zinc phase in HDG. Structure & thickness of Zn coating on various grades of steel. Effect of temperature & time on thickness, structure & properties of Zn coating. Effect of alloying metals in molten Zn on thickness, structure, properties of coating. Technology of HDG, HDG of tubes. Basic equipment for HDG.

Galvanizing, Sherardizing & Other Zinc Diffusion Coatings

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Cont'n of prev. record. Diffusion annealing of Zn coatings. Heat treatment of Zn coatings, structure of Zn coatings & kinetics of phase changes after diffusion annealing in resistance or induction furnaces; X-ray analysis of Zn coatings; Distribution (depth profile) of iron concentrations through Zn coatings. Ductility & mechanical properties of zinc coated steel. Technology of steel tube galvanising; Inspection & Post-Treatment; Meas't of coating thickness. Electrochemical method for study of structure & thickness (coulometric); metallographic studies. Post-treatments. Stripping corrosion products from zinc coated work; joining zinc-coated articles. Treatment for storage & transportation. Corrosion & protective properties of Zn diffusion coatings. Corrosion resistance under conditions of alternating immersion and in flowing aggressive aqueous media; Performance under industrial conditions. Effect of Zn coatings on corrosion fatigue & other properties.

Galvannealed sheet steel and process for production thereof.

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ltra-low carbon steel with nickel preplate for hot dip galvanising.

Galvannealed steel sheet

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Galvannealed steel sheet for automobiles has tensile strength of =340 MPa, paint bake harden ability of =10MPa, and excellent resistance to powering when press-formed and to chipping. Steel contains (%) C 0.004-0.008, Si 2.5xP -0.2, Mn 0.1-0.4, P 0.017-0. 045, sol. Al 0.003-0.08, Ti0.002-0.015, Nb 0.01-0.03 (Ti + Nb = 0.012-0.035. Sheet is galvanised, heated up to Fe-Zn alloying temp. at =20C° and cooled at =10C°/s.

Galvannealed steel sheet

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Galvannealed steel sheet comprises base metal of specified composition yielding steel sheet with tensile strength of >340 MPS, paint bake harden ability >10MPa and excellent powdering resistance and low temp. chipping resistance.

Galvannealed steel sheet and manufacturing method

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Hot-dip galvanizing method,plus alloying inclusive of Al to obtain Zn-Fe layer with 7-12% Fe content.

Galvannealed steel sheet having superior adhesiveness of plated film and method for manufacturing the same.

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Galvannealed steel sheet with antipowdering property

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Galvannealed steel sheet is made by zinc coating steel strip in Zn bath containing 0.05-0.13% Al at <470°C (strip temp. <495°C) and adjusting treatment so that coating has 8-12% wt Fe.

Galvano '91

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Proceedings of international symposium, Varna, Bulgaria, 1991.

Galvano goes Internet - first impressions are good

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Notes on new venture where Leuze Verlag, publishers of Galvanotechnik, have set up web-site.

Galvano-gasometric study of magnesium anode

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Electrochemical and eudiometric study of hydrogen evolution & factors affecting this. A new parameter, transition current density, is described. 22 refs

Galvanoluminescence of aluminium during anodising in non-dissolving electrolytes

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Title process was carried out in aqueous & non-aqueous electrolytes such as dimethylformamide (DMF) with ammonium salicylate or aq. borate. Anodic galvanoluminescence (AG) is reported as function of charge passed & other parameters. The role of impurity or minor component metals is reported. 5 refs

Galvanomechanical method of chromium coating

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Use of galvanomechanical Cr deposition method, which provides means of decreasing thickness of Cr coatings by factor of 1.5-2 is proposed for Cr coating of internal surfaces of components. Since in this method electrolyte is circulated in closed system comprising bath-working chamber- cleaning system-bath, evolution of harmful vapours into atmos. is sharply decreased.