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A metallic powder is basically used as a coating for the heat transfer enhancement.

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in Casting-Forming-Welding I by (687k points)
A metallic powder is basically used as a coating for the heat transfer enhancement.

(a) True

(b) False

This question was addressed to me in semester exam.

My enquiry is from Salvaging Techniques in section Salvage of Defective Castings of Casting-Forming-Welding I

1 Answer

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Best answer
Correct answer is (a) True

The explanation is: A coating containing particles such as metallic particles or its powder is applied to the defective area. This sets in intimate contact with the area and brazed by an electric arc wire sprayed thermal process. The selected size of metallic particles depends on the provided heat transfer enhancement.

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