File:Factory and industrial management (1891) (14778309671).jpg

Identifier: factoryindustria35newy (find matches)
Title: Factory and industrial management
Year: 1891 (1890s)
Authors:
Subjects: Engineering Factory management Industrial efficiency
Publisher: New York (etc.) McGraw-Hill (etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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ABOVE, STRAIGHT-LINE CUTTliNG OF 50-MILLIMEIKE PLAih.^. IlKLuW , .^LOTTIxNGARMOR PLATE TO A DEPTH OF 6 OR 7 CENTIMETRES. was then driven out with a punch. The maximum thickness whichhas yet been cut is 210 milHmetres (8.27 inches) in armor plate,but 300 milHmetres has been reached in round shafting. 556 THE ENGINEERING MAGAZINE.
Text Appearing After Image:
ABOVE, CUTTING OFF A MAIN SHAFT. BELOW, CUTTING A BEARING LENGTHWISE. It has seemed of interest to examine the influence of this oxygencutting upon mechanical properties of the metal. Naturally, therewas fear that a certain zone of metal would be superheated and thatit might even be oxidized to some depth. To determine these points i METAL CUTTING AND WELDING BY FUSION. 557 the double oxy-hydrogen and oxygen blow-pipe was used to cut aplate 15 millimetres thick, 500 millimetres long, and 250 millimetreswide. The practical tests were threefold; i.—Micrography demon-strated that the material was a normal mild steel of about 0.15 percent carbon. The examination of a metal section showed that therewas no decarburization even on the extreme edge, and that at a veryslight depth the pearlite showed the somewhat coarse structure ofslightly overheated metal. Everywhere else the structure was strict-ly normal. 2.—Shock tests upon test pieces 10 by 10 by 60 millimetres notchedto a depth of 2

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