. Transactions. FiG. 3.—.Sheet-archixg machine axd furnace conveyor, showing bowed SHEETS ON their SUPPORTS ENTERING THE FURNACE. ing as far as possible from oxidation. The carrier delivers the sheets toflattening rolls, which pass them on to another carrier operating atlower temperature, upon which they cool. Articles of other shapes than sheets, such as wire and tubes, can like-wise be copper plated on the same principle and by the use of similarcontinuous automatic apparatus. Other metals as well as copper, suchas tin, lead, and alloys of different metals, can also be used as the platingmet
. Transactions. FiG. 3.—.Sheet-archixg machine axd furnace conveyor, showing bowed SHEETS ON their SUPPORTS ENTERING THE FURNACE. ing as far as possible from oxidation. The carrier delivers the sheets toflattening rolls, which pass them on to another carrier operating atlower temperature, upon which they cool. Articles of other shapes than sheets, such as wire and tubes, can like-wise be copper plated on the same principle and by the use of similarcontinuous automatic apparatus. Other metals as well as copper, suchas tin, lead, and alloys of different metals, can also be used as the platingmetal. JOSEPH W. RICHARDS 369. VOL. LX. 2i 370 AUTOMATIC COPPER PLATING DISCUSSION A, Silverman,* Pittsburgh, Pa.—Prof. Richards has described avery interesting process. In addition to the method described, electro-plating and a number of other processes have been used. In one, thetwo metals were heated and united under hydraulic pressure; in a second,the steel was coated with an alloy, brass for example, and the moltencopper cast around this. The process that I would like to bring to theattention of the metallurgists present consists simply of pouring moltencopper, brass, or cupro-nickel around a clean red-hot steel billet. It iscovered by the Roth patents. The 8-in. cylindrical billet containingabout 70 per cent, steel (core) and 30 per cent, copper is hot drawn orrolled until several inches in diameter and afterward cold drawn orrolled to rod, wire of any desired diameter, or sheet. The wire is used forelectrical conduits where conductivity and high tensile strength arerequired, also for the manufacture of cab
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
