181hw10s - 3) Problem 11.17, p 257 Referring to Figs 11.22...

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Full name:________________________________ Lab group: L 5 _ _ (-5 pt for wrong info) HW10, ET181, Spring 10. Due by 6 pm on Wed, Apr 28. Cited problems are from the 4 rd edition of textbook. The Grader is not responsible for missing paper; please staple your sheets. Please use both sides of this and your papers. 1) Multiple choice questions Page 255-256 Question Answer 11.1 D 11.4 B 11.10 B, C 11.11 A, B, F 11.16 C 1) Problem 20.21, p 481 p1/2
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Full name:________________________________ Lab group: L 5 _ _ (-5 pt for wrong info) p2/2 2) Problem 11.6, p 257.
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Unformatted text preview: 3) Problem 11.17, p 257 Referring to Figs 11.22 and 11.23, pp 249-250. Penetration is caused by liquid metal flowing into sand parts of core, cope, or drag (Fig. 11.23e) Corrective actions Possible defective consequence Reduce pouring temperature so the metal will solidify faster Cold shut and misrun due to premature solidification. Increase sand packing for denser sand Captured moisture in the sand cannot vent out easily, therefore, moisture can form porosity near the cast surface as pin holes or sand blow....
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This note was uploaded on 10/04/2010 for the course ENTC ENTC 181 taught by Professor Hung during the Spring '09 term at Texas A&M.

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181hw10s - 3) Problem 11.17, p 257 Referring to Figs 11.22...

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