SU968061A1 - Cutting fluid for metal cutting - Google Patents

Description

The invention relates to the field of metalworking production, in particular, to coolant lubricants (LCL) from various cutting processes. Hydrocarbon-based coolant-based lubricants are known, in which anti-wear and extreme-pressure additives are used with various sulfur and chlorine-containing substances tl. However, their use in metalworking in many cases is limited either by high toxicity (chlorine-containing components) or by corrosivity to non-ferrous alloys, which is typical of sulfur-containing substances. The disadvantages include, in a number of cases, the low productivity, primarily due to tool wear at intense cutting speeds. The closest in composition to the present invention is a coolant for mechanical treatment of metals,; 12, having the following composition,; wt.%: Agrified sperm whale fat Dibutyl ester of trichloromethylphosphinic acid 1-10 Tetrachlorophenol 0.1-0.5 Mineral oil Else Coolant known not enough effect. It is effective when processing doped materials without providing high tool life. The aim of the invention is to increase the durability of the machining tool. This goal is achieved by the fact that a cutting fluid for metal cutting, containing mineral oil and a sulfur-containing additive, as the latter contains N, e6-methoxyfatyl and iopicolinamides of the formula With the following (Composition ratio, wt.%: M, ° C -Methoxyphenyl- (-Tiopicolinamide 0.5-10 Rest Mineral oil

Coolant compositions are prepared as follows.

The required amount of.-Methoxyphenyl-4-thiopicolinamide is dissolved in mineral oil, for example, in IC-12A at a temperature of 60-70 ° C and cooled.

The use of a derivative of thiopicolinamide as an active additive allows to intensify the pro. cutting process due to chemisorption effect.

To conduct a comparative trial, a trial of experimental coolant compositions were prepared, which are presented in Table. one.

Table 1

Comparative tests of coolant 1-5 compared to the known 6 when milling alloyed Art. H18N9T. The experiments were carried out on a vertical milling machine, the tool is an end milling head with two carbide plates T5K10. Cutting depth 1.5 mm. Composition Indicator

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From the presented results (Table 2) it follows that the proposed; the composition allows to significantly increase the efficiency of metal cutting.

When milling alloyed 60 Art. X18H9T durability of the tool in comparison with the known composition is increased by 1.7 times, while significantly improving sanitary conditions. 65

feed - 0.11 mm / tooth, processing speed - 60 m / min. All experiments were carried out until the teeth of the cutter were worn on the back edge of 1 mm. The coolant was fed to the cutting zone by irrigation. Consumption 10-12 l / min.

The test results are presented in Table. 2 ..

table 2

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Claims (2)

Invention Formula The cutting fluid is a metal cutting fluid containing mineral oil and sulfur-containing additives, which, in order to increase the durability of the processing tool, the fluid contains N, o-methoxy-nyl-o (:, - thiopicolinamide formula coolant .. | with the following ratio of components, wt.%: M, 0 (- methoxyphenyl-01 thiopicolinamide 0.5-10 Mineral oil The rest 80614 Sources of information taken into account during the examination, 1. Kurchik N. N. et al. Lubricants materials for metal cutting. M. Chemie, 1972, pp. 160161. 2. USSR author's certificate 341828, cl. C 10 M 1/38, 1972 {prototype).