LUBRICANT-COOLANT FOR MACHINING OF METALS Russian patent published in 1999 - IPC

FIELD: lubricant-coolants used for metal machining and may be used, in particular, in broaching operation. SUBSTANCE: lubricant-coolant contains, wt. %: oleic acid, 2.0-3.0; borax, 1.0-2.0; vegetable extract condensed from solid fraction of pig manure, 5.0-10.0 (calculated on dry material); water, the balance. Use of the extract in the capacity of antifriction addition in composition of lubricant-coolant increases stability of cutting tool due to reduction of friction coefficient between tool and worked part. Lubricant-coolant does not liberate harmful odors in operation and is ecologically safe. Used lubricant-coolant may be utilized in agriculture as a fertilizer or plant growth stimulant. Degreasing of parts after machining is excluded. Lubricant-coolant is fireproof. Testing of the lubricant-coolant on friction machine by ring-ring test has shown reduction of friction torque and friction coefficient by 20-28%. Cutting tool stability on lathe is increased by 17-37%. EFFECT: higher efficiency. 2 tbl