1.

Core oil and binders change their chemical properties at what temperature?(a) 200°F – 300°F(b) 300°F – 400°F(c) 400°F – 500°F(d) 500°F – 600°FThe question was posed to me during an internship interview.Enquiry is from Baking the Cores topic in chapter Core and Core Making of Casting-Forming-Welding I

Answer»

Right OPTION is (C) 400°F – 500°F

To explain I would say: Whenever any material is heated to a temperature HIGH for its PROPERTIES, there is a change in its chemical and physical aspects seen. Core oils and organic binders USED in backing the core, change their physical properties at 400°F – 500°F.



Discussion

No Comment Found

Related InterviewSolutions