Weirton Steel Corporation

Tony Georgetti

Lowell W Austin

John A Sinsel

Ralph Wilkerson

Jerry L Mullens

Eugene J Chelen

Methods and apparatus enabling simultaneous electrolytic tinplating of bottom and top surfaces of continuous-strip flat-rolled steel substrate while moving in the direction of its length, are disclosed. Both surfaces are plated in a first cell of a multi-cell horizontally-oriented tinplating line. The stannous ion plating source and the source of electrical power, for each surface, differ. Tin pellets for an upper surface anode are confined in a solution-permeable material confined, within an electrically-conductive lining. Dissolution of surface iron from the steel strip is substantially eliminated, improving the stannous ion plating solution quality, eliminating requirements for harmful additives, and increasing the variety of electrolytically tinplated continuous-strip steel products and processes.

Electrolytic tinplating of steel substrate and apparatus

Single station apparatus and processing procedures for packaging production-tonnage coils of flat-rolled sheet metal so as to provide protection from (i) packaged atmosphere, (ii) ambient atmosphere, and (iii) changing ambient atmospheric conditions. Such coil is positioned centrally of such single station apparatus for integrated polymeric stretch-film encapsulation of such wound coil and for securing such coil to a pallet. A centrally-located support of such structure enables pivotal circumscribing movement of a power-driven source of polymeric stretch-film with provisions for control of stretch-film tension. A pallet-mounted sheet metal coil, with its central axis vertically-oriented and with bottom and top planar surfaces protected, is circumferentially wound free of any requirement for movement of pallet or coil so as to encapsulate such coil, in effect, providing hermetic sealing of the coil. And the encapsulated coil is affixed to such pallet by continuous-length polymeric stretch-film wrapping. Coil encapsulating and securing of the coil to the pallet are carried out by integrated processing and by integrated apparatus. A rectangular configuration pallet platform surface requires no central opening for metal strand banding to secure the coil to the pallet, resulting in safer and more efficient palletizing of a coil and release from the pallet.

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McDonald, PA, United States of America

Tony Georgetti