Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 400
interstices and thus take on the form desired. In dropforging the metal must l-e heatc<l to a high temperature so as to be in asoft and plastic condition. A connnon type of drop luunmer uscti for this kind of work isis shown in Fig. 1(>2. The hammer in this case is fastcnc<l to a boardand… … Fig. 1().5. be done automatically or by a foot treadle. Drop hammers are alsobuilt in the same general way as steam hannners. Dies for dropforging generally consi.st of a roughing or breaking-down die wheretiie rough stock is first given appro.ximately the desired shape and asmoothing flie when…
Mechanical engineering
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