The life of a pattern is most likely to depend upon which of the following term?(a) Number of castings produced(b) Type of cooling rate of the casting(c) Size of the casting(d) Size of the patternI have been asked this question during an interview for a job.This intriguing question comes from Difference between Pattern and Casting in division Pattern and Pattern Making of Casting-Forming-Welding I

The life of a pattern is most likely to depend upon which of the follo

1.	The life of a pattern is most likely to depend upon which of the following term?(a) Number of castings produced(b) Type of cooling rate of the casting(c) Size of the casting(d) Size of the patternI have been asked this question during an interview for a job.This intriguing question comes from Difference between Pattern and Casting in division Pattern and Pattern Making of Casting-Forming-Welding I
Answer» Right CHOICE is (a) Number of castings produced The explanation is: Obviously, the more casting produced means more EXPOSURE of the PATTERN to the ELEVATED temperature of molten metals and hence, slowly causing distortion to the sand grains as well as the pattern material.

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