The practical metal-worker's assistant : containing the arts of working all metals and alloys, forging of iron and steel, hardening and tempering, melting and mixing, casting and founding, works in sheet metal, the processes dependent on the ductility of the metals, soldering, and the most improved processes, and tools employed by metal-workers, with the application of the art of electro-metallurgy to manufacturing processes : collected from original sources, and from the works of Holtzapffel, Bergeron, Leupold, Plumier, Napier, and others ... (1851)
Byrne, Oliver · Philadelphia : H.C. Baird · leaf 138
a violentexplosion, or when more slowly formed and locked up without suffi-cient freedom for escape, the casting will be said to be blown, assome of the bubbles of air will displace the fluid metal and render itspongy or porous. It not unfrequently happens that castings whichappear externally good… … The explanatory diagram, Fig. 76, is intended to elucidate someof the circumstances concerning the construction of moulds, whichin the greater number of cases are made only in two parts, but in 134 CASTING AND FOUNDING. other cases are divided into several. The figure to be moulded issupposed to be…
Metal-work · Electrometallurgy · Metallurgy
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