6. In babbitting, all metal parts that will come in contact with the molten babbitt should...

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6. In babbitting, all metal parts that will come in contact with the molten babbitt should be preheated to about 250F (121C). The preheating is necessary to A. prevent the babbitt metal from cooling too fast. B. obtain a thin layer of babbitt liner. C. facilitate the removal of the mandrel after the pour. D. prevent the dross from sticking to them. 6. In babbitting, all metal parts that will come in contact with the molten babbitt should be preheated to about 250F (121C). The preheating is necessary to A. prevent the babbitt metal from cooling too fast. B. obtain a thin layer of babbitt liner. C. facilitate the removal of the mandrel after the pour. D. prevent the dross from sticking to them.