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Powder-Metallurgy,-NC-Part-Programming-and-Metal-Casting-and-Gating-Systems
Assertion (A): Chills are used to reduce shrinkage porosity.
Reason (R): function of chill is to increase rate of solidification in a critical region.
Reason (R): function of chill is to increase rate of solidification in a critical region.
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This Chapter Powder-Metallurgy,-NC-Part-Programming-and-Metal-Casting-and-Gating-Systems consists of the following topics
