SU1313676A1 - Method for impregnating abrasive tool - Google Patents

Abstract

This invention relates to the manufacture of an abrasive tool. The aim of the invention is to increase the edge resistance of the abrasive tool and is achieved by increasing the strength of the binder and reducing the coefficient of friction between the surface of the abrasive wheel and the material being processed, for which the abrasive tool is impregnated with an aqueous solution containing the following ingredients, wt.%: Liquid glass 5 -10, potassium permanganate 1-3; water is the rest, and then subjected to heat treatment at 100-140 s. The invention can be used to improve the performance properties of an abrasive tool when it is manufactured. 2 tab. i (L

Description

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This invention relates to the manufacture of an abrasive tool.

The purpose of the invention is to increase the durability of the tool by increasing its edge resistance.

The abrasive tool on ceramic cement is impregnated with a composition comprising liquid glass, a filler, which takes potassium permanganate and water.

The components of the composition is chosen in the following ratio, mas:

5-10 liquid glass

Potassium permanganate 1-3

WaterEverything

Heat treatment at the same time lead ghri 100-140 ° C.

The selected temperature range determines the possibility of obtaining a durable binder glass and the absence of the decomposition process of potassium permanganate.

When the concentration of liquid glass in the impregnating composition is below 5%, an insufficient amount of binder is formed, which reduces the edge resistance of the circles. An increase in the concentration of liquid glass over 10% leads to a deterioration of the conditions for placing chips in the pores of the abrasive tool, the brining of the wheels and, as a result, the appearance of pulping.

A decrease in potassium permanganate of less than 1% drastically reduces the effect of using a chemically active substance. The likelihood of a burnout is high. An increase in potassium permanganate over 3% is inappropriate, since an excess of potassium permanganate precipitates due to a decrease in its solubility, due to the presence of liquid glass in the solution.

The effectiveness of the method of processing an abrasive tool is visible from the following examples.

The capillary circles of the characteristic 25A25PSM27K6 were impregnated with a solution containing, in wt.%: Liquid glass 7, potassium permanganate 2; water the rest After impregnation, the circles were subjected to heat treatment at 80,100,120,140, 160 ° C for 3 hours

When grinding parts made of steel Р9К5 (НРС64-66), having grooves with a radius of interface of the face and diameter of the depression R 1.0 ± 0.3 mm, on a K-250-01 machine (speed of a circle of 25 m / s, speed of a part 30 m / min, grinding depth 0.01 mm for 5-10 s)

76 2

Is it edge-resistant (according to the number of ground parts that have a suitable geometry) and the stability of the circles (according to the number of parts that have been decrypted without a burnout). The processing efficiency of the wheels is determined by the yield of parts.

The test results are summarized in table 1.

As can be seen from Table 1, the optimal heat treatment temperature is.

Example 1. Preparing a solution containing, wt.%: Liquid glass 3,

potassium permanganate 0.5-, water the rest.

After impregnation with the solution, the circles were heat-treated at 120 ° C for 3 hours.

And p and m e r 2. Preparing a solution; containing, wt.%: liquid glass 5; potassium permanganate, water the rest. After impregnation, the circles were thermoed at 120 ° C for 3 hours.

PRI me R 3. Circles impregnated with a solution containing, wt.%: Liquid Glass 7, potassium permanganate 2; water else. Thermally impregnated circles are treated for 3 hours. Example4. Circles were soaked in solution. Contains wt.%; liquid glass 10; potassium permanganate 3-, water the rest. The impregnated circles were heat treated at 120 ° C for 3 hours.

PRI me R 5. Circles soaked in a solution containing, wt.%: Liquid glass 12; potassium permanganate 4; water the rest. Thermally impregnated circles were thermally treated at 120 ° C for 3 hours,

PRI me R 6. Circles propitapi solution by a known method, containing, oil: liquid glass 23; aluminum powder 7; water the rest. The impregnated circles were thermally treated for 3 hours. The test results are summarized in Table 2.

As can be seen from table 2, the best results are provided by the circles treated in examples 2-4. The yield of suitable parts is increased up to 5-10 times in comparison with the non-impregnated wheel: And up to 2-4 times in comparison with the known method.

Claims (1)

Formula invented shadows The method of impregnating an abrasive tool, in which the latter is passed through with a composition comprising liquid glass, a filler and water, after which the tool is heat treated, which also differs in that NIN tool resistance by increasing-) 0 and the heat treatment is carried out at 100-140 s. Table 1 Temperature Indicator, С 80 I 100 1 120 I 140 I 160 Kromkostoykost, quantity of details4-6 8-10 10-12 11-13 10-12 Durability, number of parts15-16 14-15 12-13 11-12 4-6 Table 2 Circle 25A25PSM27K6 Edging resistance, durability, quantity quantity of parts hoists epu 1 2 3 4 5 6 1-2 5-7 8-10 10-12 13-16 15-17 3-5 its edge resistance, potassium permanganate is introduced into the composition as a filler, the components of the composition are taken in a ratio, wt.%: Liquid glass 5-10 Permanganate Kali 1-3 WaterEverything, 3-4 10-12 15-16 12-13 8g-10 5-6 6-7