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Unformatted text preview: 11.13 What are some of the general defects encountered in casting processes? Name and briefly describe three. (1) misruns - the casting solidifies before filling the mold cavity; (2) cold shuts - two portions of metal flow together but there is lack of fusion at the joint (3) cold shots - solid globules of cast metal become entrapped in the casting (4) shrinkage cavity - a depression on the casting surface or an internal void in the casting caused by solidification shrinkage (5) microporosity - a network of small voids throughout the casting caused by localized solidification shrinkage (6) hot tearing - a crack in the casting caused by a mold that does not yield to the metal during the early stages of solidification shrinkage 1) d 2) a 4) b 6) c, e, f, h 7 ) b 8) e 12) a, d, f 13) a, b, d, f 15) c 16) c...
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- Spring '07