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Surface irregularities of the solidifying casting can increase the temperature at the interface.(a) True(b) FalseI got this question during an interview for a job.Query is from Solidification with Predominant Interface Resistance in section Cooling and Solidification of Casting-Forming-Welding I

Answer»

Right choice is (b) False

To ELABORATE: The surface irregularities of the solidifying casting results in irregular contacts to establish between the die wall and the casting PRODUCED. This always results in a temperature drop across the interface. The extent of temperature drop or the degree of resistance mainly DEPENDS on the contact area, physical and thermal properties of the materials in contact.



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