Influence of Environmentally Friendly Coolant-Lubricants on the Thermal Loading of the Cutting Process When Countersinking

The paper considers the influence of environmentally friendly coolant-lubricants on the temperature parameters of the cutting process during hole countersinking. Structural steel 20, corrosion-resistant steel 12X18N10T and titanium alloy VT1-0 were selected as the processed materials. Mineral oils, as well as environmentally friendly vegetable oils and esters based on them were used as coolant-lubricants. The coolant-lubricants feed was carried out using an environmentally oriented dosing unit, which allowed the lubricant to be sprayed into the cutting zone in portions of an aerosol, which provided greater penetration and reduced the liquid consumption. The study of the temperature state of the cutting process was carried out using an artificial, chromel-copel thermocouple, the junction of which was placed in the immediate vicinity of the cutting zone. The data obtained when using vegetable oils as a coolant-lubricant in operations running under conditions of pronounced adhesive wear indicate their competitiveness not only with mineral oils, but also with traditionally used oil coolant-lubricants.

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