Chilled iron castings are__________________?
Correct answer: B. Highly wear resistant
- A. Easily machinable
- B. Highly wear resistant
- C. Soft on surface
- D. None of these
Explanation
Rapid cooling of chilled iron forms a hard white-iron layer rich in carbides at the casting surface. This makes chilled castings highly resistant to abrasion, although the hard surface is difficult to machine.
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