Which of the following products is mostly produced by precision invest – McqOptions

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1.	Which of the following products is mostly produced by precision investment casting?
A.	Aluminium billets
B.	Rail
C.	Connecting rod and crankshaft
D.	Jewellery and surgical instruments
Answer» E.

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Investment casting is cheap process with no limits on size and mass of the casting.$
Castings produced by investment casting do not require any further machining for finishing of the surface.$
Which of the following products is mostly produced by precision investment casting?
If mercury is used as a pattern material in place of wax, then for the preparation of mould, mercury is kept at temperature____?