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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


                      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


                      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
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