Excerpt: ... equal. Relative to shape, it is interesting to note that rounds, squares, octagons and other three axial bodies, with two of their axes equal, have the same surface for the unit weight. For example: SizeLengthSurfaceWeight Surface for 1 lb. 2 in. Sq.12 in. 96.0 sq. in. 13.60 lb. 7.06 sq. in. 2 in. Round12 in. 75.4 sq. in. 10.68 lb. 7.06 sq. in. Although this discussion is at present based upon mathematical analysis, it is hoped that it will open up a new field of investigation in which but little work has been ...
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Excerpt: ... equal. Relative to shape, it is interesting to note that rounds, squares, octagons and other three axial bodies, with two of their axes equal, have the same surface for the unit weight. For example: SizeLengthSurfaceWeight Surface for 1 lb. 2 in. Sq.12 in. 96.0 sq. in. 13.60 lb. 7.06 sq. in. 2 in. Round12 in. 75.4 sq. in. 10.68 lb. 7.06 sq. in. Although this discussion is at present based upon mathematical analysis, it is hoped that it will open up a new field of investigation in which but little work has been done, and may assist in settling the as yet unsolved question of the effect of size and shape in the heat treatment of steel. HEAT-TREATING EQUIPMENT AND METHODS FOR MASS PRODUCTION The heat-treating department of the Brown-Lipe-Chapin Company, Syracuse, N. Y., runs day and night, and besides handling all the hardening of tools, parts of jigs, fixtures, special machines and appliances, carburizes and heat-treats every month between 150,000 and 200,000 gears, pinions, crosses and other components entering into the construction of differentials for automobiles. The treatment of the steel really begins in the mill, where the steel is made to conform to a specific formula. On the arrival of the rough forgings at the Brown-Lipe-Chapin factory, the first of a long series of inspections begins. Page 122 Annealing Method.
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