Havrylyuk M. Development of environment friendly lubricating and cooling liquid with high corrosion protection action for mechanical treatment of high strength steels

New of environment friendly lubricating and cooling liquids (LCL) for anti-corrosion protection of parts and equipment in the inter-operative period after mechanical treatment of high strength steels are proposed. The reaction of reetherifcation of triglycerides with triethanolamine and double bonding amination of sunflower and rapeseed oil monoethanolamine has increased corrosion and lubricating ability of LCL on their basis. The mechanism of action of the proposed LCL, which consists in its chemisorption on the steel surface after mechanical treatment, is described. It is shown that in the new LCL the corrosion of 38KhN3МFА steel proceeds under anode control. It has been established that significant corrosion protection for the LCLs use during treatment of high- strength steels is combined with an increase in the durability of the tool during turning of 38KhN3МFА steel in 1.6 times and an increase in the speed of drilling of 12Kh18АG18Sh steel in comparison with LCLo in 1.3 times. The results of LCL tribological investigations correlate with electrochemical and adsorption measurements data. The industrial test of the new LCL at the enterprise "Navigator L" LTD confirmed its post-operation protective effect caused by steel corrosion and the possibility of its application in the mechanical treatment of the rotor and band steels during power unit repair.