Three basic types of cutting fluids are used in the manufacturing process: water soluble oils, straight cutting oils, and chemical fluids. The following are the various functions of metal cutting fluids:
(1) To cool the cutting tool as a primary function, and to cool the work piece;
(2) To reduce the heat generated by friction through lubrication;
(3) To provide anti-weld properties in order to prevent welding of the chip to the tool; and
(4) To wash away the chips [19].
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