SU1673328A1 - Water-base working fluid electric erosion-resistant treatment - Google Patents

Abstract

The invention relates to electrophysical processing methods, namely to EDM processing with a non-profiled electrode tool (wire). The aim of the invention is to increase processing performance, improve the quality of the treated surface and increase the durability of the electrode tool. This is achieved by adding 2- / acanoyloxy / ethyl dimethylammonium N-toluenesulfonate to the working medium in a water-based medium in the following ratio of components, wt%: 2- / alkanoyloxy / ethyl dimethylammonium N-toluenesulfonate 0.05-0.45

water - the rest. 1 tab.

Description

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WITH

The invention relates to electrophysical processing methods, namely to electroerosive processing (EZO) by non-profiled electrode-tool (wire).

The aim of the invention is to improve the processing performance and durability of the electrode tool, improving the quality of the treated surface.

To achieve this goal, p-toluenesulfonate - 2- {alkanoyloxy) ethyl dimethylammonium was additionally introduced into the working water based on tap water:

CH3- (CH2) e-COOCH2K4 (CH3)

in the following ratio of components, wt.%: 2- (alkanoyloxy) ethyl dimethylammonium p-toluenesulfonate - 0.05 ... 0.45; water - the rest.

A positive effect is achieved due to the fact that p-toluenesulfonate-2- (alkanoyloxy) ethyl dimethylammonium decomposes due to thermal decomposition in the discharge channel into a number of compounds leading to a change in physicochemical

characteristics of the near-electrode layers of the working fluid, intensifies the processes of updating the working medium in the interelectrode gap (MEP) and evacuating the erosion products from the treatment area, reduces the concentration of the erosion products suspended in the working fluid, has an inhibiting effect on the corrosion processes of metals molecules of the benzene cycle

The 2- (alkanoyloxy) ethyldimethylammonium p-toluenesulfonate introduced into the aqueous medium is capable of forming complex compounds with a low electrical conductivity with the microparticles of the removed metal, which contributes to a decrease in the electrical conductivity of interelectrons OI XI CO CJ

yu so

native environment, improving processing performance, reducing electrode-wire wear, increasing the working life of the working environment. The possibility of the formation of such metal complexes is due to the presence in the p-toluenesulfonate 2 - (elkanoyl) ethyldimethylammonium carbonyl groups, through which coordination occurs.

The invention is illustrated by the following examples. In all cases, the processing was carried out on an electroerosive cutting machine with CNC mod. 453 1FZ at a frequency of 8 kHz. Brass wire L63 with a diameter of 0.25 mm served as an electrode tool. Rectangular specimens of U8GA steel, VK-10 hard alloy, 10 bronze ОЦС 3.5-7 3 and D16 aluminum with dimensions 100x20x5 mm, cutting height 5 mm were subjected to processing. The examples provide quantitative data for U8GA steel. Test results for other alloys are shown in the table.

Example 1. Preparing a working medium, a solution in 100 liters of tap water 50 g of n-then 2- (alkanoyloxy) ethyldimethylammonium ursulfonate, followed by stirring for 10 ... 15 minutes.

In the resulting medium, an EEE was produced by wire electrode of samples made of U8GA steel. The processing capacity is 21 mm / min, which is 100% higher than the capacity achieved on the prototype medium - tap water with the addition of 0.3% hydroxyethylidene di-phosphonic acid (HEDP). The consumption of the electrode-wire as compared with the prototype was reduced by 7.9% (from 6.8 to 6.3 mm / s).

The roughness of the treated surface is the same and is Ra 1.8 microns.

PRI mme R 2. Prepare a working medium by dissolving 300 g of p-toluenesulfonate 2- (alkanoyloxy) ethyl dimethylammonium in 100 liters of tap water, followed by stirring for 10-15 minutes. In the resulting medium, an EEE was produced by wire electrode of samples made of U8GA steel.

Processing capacity is 29 mm / min, which is 45% higher than the throughput achieved on the prototype medium. The electrode-wire consumption decreased by 38.7% (from 6.8 to 4.9 mm / s) while reducing the surface roughness by 12.5% (from 1.8 to 1.6 µm).

PRI me R 3. Prepare a working medium, a solution in 100 liters of tap water 450

g of 2- (alkanoyloxy) ethyldimethylammonium n-toluenesulfonate followed by stirring for 10 .. 15 minutes. In the resulting medium, an EEE was produced by wire electrode of samples made of U8GA steel. The processing capacity is 32 mm / min, which is 60% higher than the capacity achieved on the prototype medium. Electrode flow-provo

Comparison with the prototype decreased by 47.8% (from 6.8 to 4.6 mm / s) while reducing the surface roughness by 20% (from 1.8 to 1.5 µm).

5P 4. Measure 4. Prepare a working environment

500 g p-toluenesulfonate 2 - (alkanoyloxy) ethyl dimethylammonium solution in 100 liters of tap water, followed by stirring for 10-15 minutes.

0V the resulting medium is produced EEE

electrode-wire samples made of steel U8GA. The processing capacity is 30 mm / min, which is 50% higher than the productivity achieved on the prototype medium. Electrode-wire consumption as compared with the prototype decreased by 19.3% (from 6.8 to 5.7 mm / s) while reducing the surface roughness by 5.8 (from 1.8 to 1.7 microns).

The analysis of the obtained results allowed us to draw the following conclusions.

When using the working environment with the addition of p-toluenesulfonate 2- (alkanoyl. Si) ethyldimethylammonium in the amount of

5 less than 0.05% for various processed materials, an increase in processing performance by 3 ... 10% is observed while the consumption of electrode-wire is reduced by 4 ... 12%. With an increase in the content of the additive

0 in the range of 0.05 ... 0.45% there was a significant increase in productivity by 1.3 ... 1.6 times while reducing the consumption of the electrode-wire by 1.2 ... 1.4 times. The roughness of the treated surface

5 compared with the prototype environment decreased by 20%.

With the increase in the content of p-toluensulfonate 2- (alkanoyl) ethyldimethylammonium more than 0.45% was observed

0 some deterioration of technological indicators of processing, so a further increase in the content of the additive in the working environment is impractical.

Claims (1)

5 Formula of Invention A water-based working medium for electroerosion treatment with an electrode-wire, characterized in that, in order to increase processing performance, improve the quality of the surface to be treated, and increase the durability of the tool electrode, it contains 2- (alkanoyloxy) etidimethylammonium n-toluenesulfonate at the following the ratio of components, wt.%: 2- {alkanoyloxy) ethyldimethylammonium p-toluenesulfonate Water