SU1255415A1 - Composition of impregnator for abrasive tools - Google Patents

Abstract

The invention will improve the performance of an abrasive tool: dimensional stability, specific productivity, and reduce the power of grinding. To do this, the finished tool is impregnated with an impregnator, which includes copper stearic acid and copper sulfate 5-water at a ratio of--; Research Institute of components, wt.%: Copper stearic acid 85-92; copper sulfate 5-water 8-15. Stearic acid copper, which has lubricating and cooling properties, is prone to slagging and insufficient copper absorption. The addition of copper sulphate (copper sulphate 5-water) deprives the copper stearate of these disadvantages. from $ 3

Description

one

This invention relates to an impregnator composition for an abrasive tool used in grinding difficult-to-machine materials with a tendency to interact with a circle, such as stainless steels.

The aim of the invention is to improve the performance of an abrasive tool, increasing the dimensional resistance of the wheel, reducing grinding power, and increasing the productivity

The composition of the impregnator for an abrasive tool contains a compound of copper stearic acid and copper sulfate 5-aq-oh. The best is the following composition, wt.%:

Copper stearic acid 85-92

Copper sulfate

5-water 8-15

The functional purpose of the components is as follows. Stearic acid copper, which has lubricating and cooling properties, has a number of drawbacks, such as slagging and insufficient copper release. The addition of copper sulphate in the required proportion deprives the copper stearate of these disadvantages.

To prepare the impregnator, a portion of finely ground copper sulfate crystalline hydrate is added to the melt of copper stearate at 150 ° C.

The proposed composition has a high heat capacity, anti-friction and damping properties. When pressed to the circle, the impregnator fills the pores and coats the grains with a surface of 55415 .2

The mixture is held at a predetermined temperature for 1.5 hours, while further separation of the vitriol crystals occurs by the release of 5 water of crystallization with the formation of fine slowly settling particles of copper sulphate and partial decomposition products,

10 PRI me R 1. Prepare an impregnator of the composition, wt%: copper stearic acid 95; copper sulfate 5-water 5.

PRI mme R 2. Composition, wt.%: 15 copper Stearic acid 92; copper sulfate 5-water 8.

PRI me R 3, Composition, wt.%: Copper Stearic 88; copper sulfate 5-water 12. 20 Example4. Composition, wt.%: Copper Stearic 85; copper sulfate 5-water 15.

PRI me R 5. Composition, wt.%: Copper Stearic acid 82; copper serum 25 nokisla 5-water 18.

Comparative testing of the compositions was carried out on a surface grinding machine model ZG71 with carbide circles.

flint at lap speed

30 m / s and sorrow. Table 1.7 m / s, with mortise grinding, with 0.02 mm feed for double stroke on stainless steel specimens,

The test results are shown in the table.

This circle provides a high rate of cooling of the cutting grain,

chips and the surface being treated, prevents the circle from interacting with the material being processed.

The proposed mechanism of action of the impregnating composition is as follows. Copper stearates undergo tribochemical transformations, eventually releasing copper and disintegrating into a series of light and heavy aldehydes with the formation of a significant mass of shpaks. The free copper is partially deposited on the forming chips, being to some extent an insulating layer. Copper on the abrasive material is observed less often in the form of very fine inclusions. When using the proposed composition, the copper film on both the surface of the chip and the metal turns out to be significantly more dense, which is reflected in the technological properties of the composition. At the same time, shpaks are practically not formed, i.e. the circle does not go to bed.

As can be seen from the table, the use of an impregnator beyond the indicated concentrations is impractical due to the fact that, with an excess of stearic copper, the technological properties of the composition are reduced (Example 1). With an excess of copper sulfate, the technological properties of the composition deteriorate slightly, but a coarse sediment appears in the composition (Example 5),

Editor O. Yurkvedka Order 4763/18

Compiled by V.Vorobyov

Tehred V.Kadar Proofreader V.But ha

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VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Rauschska nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

12554154

The impregnation of the working surface of the abrasive wheel is carried out by a known method, according to which the impregnator is applied to the 5 cutting surface of the grinding wheel, rotating at working speed.

As a result of testing on stainless steel specimens,

ten

15

20

25

thirty

However, when using the proposed impregnator, the radial wear of the wheel decreases relatively well-known by 2.1 times, and the specific productivity increases by 2.1 times.

Claims (1)

Invention Formula The composition of the impregnator for abrasive tools, including salts of stearic acid, characterized in that, in order to improve the performance of the tool, it additionally contains 5-water sulfate copper, and as a salt of stearic acid - copper sulphate in the following ratio of components wt.%: Copper stearic acid 85-92 Copper sulfate 5-water 8-15