SU1129227A1 - Cutting fluid for metal machining - Google Patents

Abstract

LUBE-COOLED LIQUID FOR MECHANICAL METAL TREATMENT, containing water, sodium SU01,1129227 3

Description

11 The invention relates to coolant lubricants (coolant fluids) used in metal cutting. Coolant for mechanical processing of metals, known as aqueous solutions of electrolytes or aqueous emulsions of mineral oils with various types, are known. Li 3 additives. There are known coolant based on water with (addition of oleic acid, nitrite nat {) and OP-7, caustic soda of water glass, borax and oxidized petrolatum 2, as well as with the addition of eulfofresol, kerosene, oleic acid, borax and triethanolamine III However, such liquids are unstable, toxic, clinging to the formation of sticky resinous sediments .; The closest in terms of composition and achievable result to the proposed is the coolant of ICP-45E mechanical machining of metals, May.%: Sodium salt of sulphated petroleum acid Chlorinated para-12-12 fin 0.5-1.5 Trisodium phosphate 2-4 Triethanol amine 4 -6 Sodium nitrite Non-ionic wetter 3-5 water Else Water However, this fluid is not sufficiently effective when grinding parts, especially since it has insufficient lubricating properties, as a result of which there is a decrease in the durability of grinding wheels and performance abotki. The purpose of the invention is to increase the processing performance and durability of the cutting tool. This goal is achieved by the fact that a cooling fluid for machining of metals containing water, sodium salt of sulfonated oil acids, chlorinated paraffin, trisodium phosphate, triethanolamine, sodium nitrite and a non-ionic wetting agent, additionally contains N, N-methylene-5is-oxazo-lipidir when The following ratio of components, May. %: Sodium salt of acids of sulfonated oil - 1, 5-2,5 7 Chlorinated paraffin. 0.45-0.75 Trisodium Phosphate - 0.06-0.10 Triethanolamine 0.15-0, .25 Sodium nitrite 0.15-0.25 Non-ionic wetting agent 0, 15-0.25 N, N-methyl-5c - oxazolidine 0.12-0.20 Water Else Additive N, N-methylene-5m6 -oxazolidine is obtained by condensation at a molar ratio of 1: 1.5 to 1: 2: monoethanolamine with formaldehyde or a formaldehyde substance (formalin, paraform, etc. ) at 75-80 ° С 5J .. The following substances are used to prepare the coolant: sodium fats sulfate oil acids (diesel oil D-11) TU 3820132-79i chlorinated paryfin containing 40% chlorine TU 6-01-511 -76, Trisodium phosphate GOST 201-76, triethanolamine 1TU. 6-02-91, sodium nitrite GOST 19906-74, Non-ionic wetting agent, for example OP-7, GOST 8433-57. Coolant is prepared by simply mixing the components. The following coolant compositions are prepared (Table 1). In order to evaluate the lubricating properties of the coolant, these liquids (compounds 1-5) are tested in comparison with the known coolant lubricant IHP-45E (composition 6) on a four-ball friction machine CSM-3.2 according to GOST 9490-75. At the same time, the diameter of wear spot (dj) on the balls is determined when tested for 1 hour under a load of 392 °. The results are presented in table. 2. In order to assess the operational and technological properties, the proposed coolant compositions are tested when grinding samples from steel ShH-15 under a load of 0.3 MPa with an abrasive wheel of software 150-15 x X 32 characteristics 24А25СМ2К. To compare the results, a 5% emulsion from commercial emulsol EGT-2 (composition 7), also used in grinding operations, is also tested. The test results are presented in Table. 3. As can be seen from the data table. 3, the application of the proposed composition of the coolant when grinding samples of steel ShH-15 contributes to a significant increase in processing performance and reduce the consumption of abrasive tools

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(9.2 and 3.2 times, respectively) and the known liquids used for providing besprizhogovy grinding-like mechanical operations at higher loads and during processing, ensures that the same roughness of the treated is processed without grinding.

Thus, the proposed coolant for lubricating properties exceeds

5 kah and contributes to the increase in processing performance and durability of the cutting tool.

Table 1

table 2

Table 3

Claims (1)

LUBRICANT COOLANT FOR MECHANICAL PROCESSING OF METALS, containing water, sodium salt of sulfonated petroleum acid acids, chlorinated paraffin, trisodium phosphate, triethanolamine, sodium nitrite and a nonionic wetting agent, which increases the productivity of the tool and the result the liquid additionally contains Ν, Ν'-methylene-6 ″ s-oxazolvdine in the following ratio of components, wt.%: Sodium salt of acids of sulfonated petroleum oil Chlorinated paraffin Trisodium phosphate Triethanolamine Sodium nitrite Nonionic wetting agent N, N ^r -methylene-5is-oxazolidine Water 1.5-2.5 0.45-0.75 0.06-0.10 0.15-0.25 0.45-0.25 0.15-0.25 0.12-0.20 Rest to to to to> 1 1129227