1. How is fluidity defined? Why is it important? 2. Explain the reasons for hot tearing in castings. 1 answer below »

1. How is
fluidity defined? Why is it important?

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2. Explain
the reasons for hot tearing in castings.

3. Why is it
important to remove dross or slag during the pouring of molten metal into the
mold? What methods are used to remove them?