Which Characteristics Are Necessary for a Blowtorch to Heat Casting

question 18

Multiple Choice

Which characteristics are necessary for a blowtorch 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

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