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Modern high alloyed steels has combine the high strength, plasticity and tendency
to hardening, and low thermal conductivity. They belong to hard-to-work one. It is most
rational to use water LCL during mechanical processing of steels. Their advantages are:
better cooling ability than that of oil; relatively low cost, fire safety, less toxicity. But
the question of their corrosion activity arises. New requirements for environmental
safety must be taken into account when LCL are manufactured, used and utilization.
The solution can be achieved by using sunflower and rapeseed vegetable oils for LCL
synthesis. Ukraine occupies a leading place in the world in production volumes of these
oils. The replacement of petroleum oils on vegetable oils in LCL composition will
reduce harmful influence on humans and will significantly reduce environmental
pollution.
An important urgent task is the development of environmentally safe water LCL
for providing reliable corrosion protection of machined parts and equipment during the
work process and during the interoperate period under simultaneously reduction of
temperature and power-mechanical parameters of high strength steels machining.
Aanticorrosion action regularities of LCL on the basis of vegetable oils, the main
features of the protective action of new LCL against corrosion mechanism, and the
effectiveness of LCL influence on the process of high strength energy purpose steels
mechanical treatment are determined by the next investigation methods: corrosion -
gravimetric, electrochemical; LCL physico-chemical properties - according to DSTU, as
well as adsorption characteristics and complex thermochemical analysis, optical and
electron microscopy investigations; tribological parameters on the SMT-1 friction
machine.
Staging of LCL synthesis by vegetable oil modification with triethanolamine
(TEA) and monoethelenamine (MEA) and data on physico-chemical characteristics of
new products investigation are described. The reaction of transesterification of TEA
triglycerides and the double bonding of MEA of sunflower and rapeseed oils increased
anticorrosion and lubricity of LCL on their basis.
The investigation results of new LCL influence on the corrosion resistance of
12Kh18АG18Sh and 38KhN3МFА steels samples with polished surfaces and samples
