The blowtorch used to heat casting alloys:
A) may operate on a combination of natural gas and compressed air for low-temperature alloys.
B) may operate on a combination of natural gas and oxygen for higher-temperature alloys.
C) must heat the alloy sufficiently to ensure a low viscosity of the alloy for casting.
D) A, B, and C.
E) A and C.
Correct Answer:
Verified
Q6: Which of the following sequences describing the
Q17: An invested wax pattern is allowed to
Q17: Which of the following statements is(are) true
Q18: Most casting is done:
A) by press molding.
B)
Q20: The investment material is _; the wax
Q22: Investment is retained in a _ while
Q23: Casting alloys are melted using:
A) a blowtorch.
B)
Q24: If a metal sprue is used,it must
Q25: If base-metal castings are pickled,_ will occur.
A)
Q26: A sprue forms a channel in the
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