SU767182A1 - Cutting fluid for mechanical working of metals - Google Patents

Description

. one . . The invention relates to cutting fluids (coolant), used 1m, for mechanical machining of products from brittle-destructive materials such as cast iron. TCI-rocky found coolant based on petroleum products, such as kerosene 1. However, these coolants have a number of drawbacks: they are toxic, due to the presence of aromatic hydrocarbons, and flammable, relatively low flash temperature prevents hydrocarbons from being used at high-speed treatment processes. Comparable to the proposal, it is a cutting fluid for mechanical, metal-based processing of metals, sodium nitrite, triethanol, and tetraborne-cyrlate, sodium 2. However, the known coolant has a disadvantage in its low penetrability, which is not possible to achieve in final processes processing the required quality of the treated surface (not higher than grade 7). The aim of the invention is a coolant with improved penetrating properties, the use of which improves the quality of the surfaces to be treated. The goal is achieved by the fact that, based on water, sodium nitrite, triethanolamine, and tetraborate sodium, the coolant additionally contains oxafluoroalkanesulfonates of the general formula CrH5 (OCFz SG) OCFj CFt SO, Jt, where M is Ma / K, NH4 NR, R - CgH, n 1,2. Non-degradable coolant has the following composition, wt.% Triethylamine 0.5-2 Sodium nitrite 0.2-0.6 TetrabornnoksOi sodium-0.2-0.5 OxaFluoroalkyasulfonates 0.05-1.0 Water Up to 100 In table. 1 shows the recipe for coolant.

Table

C2F50CF2CF (CE) OCF2CF (C OCF2CF,; -0.1 C2F bcF2CF (CF OCF2CF (C) OCF2CF2SqзNEdd --- 0.1.

VodoYo YuODo YuODo 100 Up to 100 Up to 100 Up to 100

These coolant formulations have been tested with ajiwaiHOM hning cast iron nipples SCH 21-40; diameter, 4 mm, length 80 mm, ABX 50-i6- diamond bars: nl, 5; j АСР 125/100, М1,100; reciprocating speed

The roughness of the treated surface.

Composition

3

four

 b

Known

Coolant formulations are prepared in the same way as compounds 3 and 4 only when used as oxafluoroalkanesul: phosphates CaFsOeFiCFCCFp OCF2CF2SO; NH and CgF, respectively. OCFjCF (CF OCFjCF (CF) OCPj CF SOgNM

When testing these compounds with diamond milling in the conditions described above, they provided a class of roughness corresponding to compositions 3 and 4.

Thus, the above tests proved that the application of the proposed coolant provides a highly penetrating ability of the coolant to the treatment area, which makes it possible to increase the cleanliness of the treated surface by class I.

Claims (1)

Invention Formula Lubricating and cooling; acifflicocfb for metal machining movement 10 m / min; pressure of 2 atm; Honing duration 1; min. Coolant recipes 1-6 tested in comparison with the known. . The test results are shown in Table. 2.;:::.,:. T a b l and c a. 2 7S 8 B 8 a 8 d 8 a 8 5. 6 B based on water, sodium nitrite, three ethanolamine and tetraborate sodium, which, in order to improve the quality of the surface to be treated, doyolitelnoe liquid contains oxafluoroalkanesulfonates of the general formula CiF5 (OCPzCF) n OCFj CfI {WjK, CPH - where M - Na, K, YND, NRy H R - DOWN CjHg, n 1,2, with the following content of components, weight. %: 0.2-0.6 Sodium Nitrite 0.5-2.0 Triethanolamine Tetraborate nat0, 2-0.5 riy Oxafluoroalkanesulfo0.05-1.0 Nata Up to 100. Water 5767182g Sources of information, cutting, M .. Chem. 1972 taken into account in the examination, p. 160-li9. i.yit, 1, N. Kurchik and others. Lubricating SsbJSf materials for metal treatment (prototype)