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Positive surface irregularity is caused by excess metal penetration.

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+1 vote
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in Casting-Forming-Welding I by (687k points)
Positive surface irregularity is caused by excess metal penetration.

(a) True

(b) False

The question was posed to me during an interview for a job.

My question comes from Visual Inspection in division Inspection Testing in Foundries of Casting-Forming-Welding I

1 Answer

+1 vote
by (828k points)
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Best answer
The correct option is (a) True

For explanation I would say: During the formation of positive surface irregularity on the casting, an excess amount of metal has to penetrate into the ceramic mold material, or there should be an entrapment from air to liquid next to the pattern.

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