Discussion
A soluble oil cutting fluid is required to emulsify readily with water in order to
Answer: B
Correct answer: combine water's cooling with oil's lubricity
Water is much the better coolant and oil much the better lubricant, and an emulsion delivers both from one fluid. The oil is supplied as a concentrate that must emulsify readily and stably when the operator adds water, since a poorly formed emulsion separates in the sump and delivers neither property reliably.
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