2012 John Wiley& Sons, Inc. 2012 John Wiley& Sons Inc M P Groover, Fundamentals

Question

2012 John Wiley& Sons, Inc. 2012 John Wiley& Sons Inc M P Groover, Fundamentals of Mod F MISSOURI WESTERN STATE UNIVERSITY College of Professional Stedie Departmret of Engineering Technology MET -Manufacturing Methods Name 1. Sand casting is of which type? a) Die mold b)expendable mold c) permanent mold d) expensive mold 2. In casting, total solidification time is defined as which of the following? Time between pouring and complete solidification. b) a) time between pouring and complete cooling to room temperature. c) time between solidification and complete cooling to room temperature. d) time to give up the heat of fusion (melting) 3. In casting, a flask is which of the following? A) Beverage bottle for the foundrymen. B) box which holds the cope and drag. C) container for holding molten liquid metal D) metal that extrudes between the mold halves 4. In sand casting, the volumetric size of the pattern comparing to the casted product is which of the following? a) The same size. B) smaller. C) bigger. D) not relevant. 5. For which of the following reasons is a green-mold so-named? a) Green is the color of the mold. B) mold is cured. C) mold is dry. D) moisture is contained in t mold Cupolas are furnaces most often used to melt which of the following metals? a) Aluminum b) bronze e)Cast Iro 6. d) Zinc alloy Coke in a casting cupola is which of the following? a) Foundrymen's favorite soda e) the refractory lining of the cupola 7. b) a type of coal that is used to melt the metal d) the material used to prevent oxidation A misrun is which of the following defects in casting? a) Globules of metal becoming entrapped in the casting. b) metal is not properly poured into downsprue. c) metal solidifies before filling the cavity d) microporosity and "pipe" formation &. 9. Silica as a raw material for glass-making is which of the following composition? c) Siso a) Al O3 b) Sio d) Sio

Explanation / Answer

1) b) expendable mold.....because this method of mold casting involves the use of temporary, non-reusable molds.

2) a) Time between pouring and complete solidification

3) b) box which holds the cope and drag

4) c) bigger...in order to conider the shrinkage of casted product

5) d) moisture is contained in the mold

6) c) Cast Iron

7) d) the material used to prevent oxidation

8) c) metal solidifies before filling the cavity

9) d) SiO2....it is raw material composition of Silica

10) b) 1500 to 1600 C

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