Transactions . poured intothe ingot moulds, carbon .41 ; this steel blew off, in cooling, alarge amount of gas, at the same time expelling a quantity of steel,which necessarily left the mass in a very porous condition. It waswithout the slightest difficulty rolled at a single heat into soundplate, gauge No. 11, like the sample, and is now on exhibition atthe fair of the American Institute for inspection, showing conclu-sively that porosity of the steel does not embarrass the process orinjure the product. A box like those previously described, only made of plate of fthinch in thickness, was fil
Transactions . poured intothe ingot moulds, carbon .41 ; this steel blew off, in cooling, alarge amount of gas, at the same time expelling a quantity of steel,which necessarily left the mass in a very porous condition. It waswithout the slightest difficulty rolled at a single heat into soundplate, gauge No. 11, like the sample, and is now on exhibition atthe fair of the American Institute for inspection, showing conclu-sively that porosity of the steel does not embarrass the process orinjure the product. A box like those previously described, only made of plate of fthinch in thickness, was filled with steel like the last, and subsequentlyrolled into ^-inch plate, of which a sample is presented. The re-duction was too rapid, and the nearly white heat of the plate whenfinished, accounts for the appearance of the surface. 170 THE WHEELER PROCESS FOR AVELDING IRON In another instance, sections of old steel rails cut to lengths of twofeet were laid close together on a plate of muck-bar, alternating tops. and bottoms, and held in position by a band of muck-plate bent soas to form the four sides of a box six inches deep, the top of the boxbeing another piece of muck-bar one inch thick and 15 x 28 inchesdimensions, as shown in the sketch. The steel in this box occupied less than half of the space withinit, necessitating a reduction between the rolls of more than threeinches before the metal could be compressed into a solid mass. Nodifficulty was experienced in rolling this pile into ^-inch plate at a
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
