SU795922A1 - Composition for producing abrasive tool - Google Patents

Description

The invention relates to the manufacture of diamond-abrasive tool and can be used for the preliminary polishing nonmetallic,-crystal materials, for example stek- ^e la, the glass-ceramic.

Known abrasive mass based on an organic binder for the manufacture of abrasive tools, including chromium oxide.

A tool made of known mass can improve the cleanliness of the surface to be treated _ however, greasing of the tool occurs, which leads to a decrease in productivity.

The purpose of the invention is to increase the productivity of the tool by eliminating its salinity.

This goal is achieved in that as a filler in the mass introduced iron sulfate in the following ratio of components, wt.%: 25

Abrasive 4,5-11,5 Epoxy resin  40.0-50.0 Hardener 2.5-6.0 Plasticizer 5.5-11.5 thirty

Chromium oxide 22.0-35.0 Iron sulfate 3.0-8.5 Iron sulfate is a water-soluble salt that, when working in an aqueous medium, is washed out of the abrasive mass, which contributes to the renewal of the surface of the tool. In addition, iron sulfate is chemically active with respect to glass and glass. As a result of the interaction of these materials, the surface layers of glass and glass are transformed into easy-to-work gel-like layers consisting of silicon oxide, this eliminates the salting of the tool, stabilizes the removal of glass over time, and increases the productivity of the process.

Depending on the hardness of the processed material, synthetic diamonds, elbor or silicon carbide are taken as an abrasive powder.

Example. Samples of the components are placed in porcelain cups, weighed on an analytical balance, then mixed in a laboratory enameled mixer to obtain a uniform abrasive mass. The abrasive mar is poured into the mold and polymerized (cured) in the following mode at 25 * 0 for 24 hours, then at 120¾ for 4 hours.

The introduction of iron sulfate accelerates the polishing process only within certain limits of its concentration in an abrasive tool. Its low concentrations (less than 3.0 9% by weight) do not accelerate polishing, while large (more than 8.5% by weight) slow down the process, which is associated with an increase in the acidity of the medium and the formation of a protective film of silica gel on the treated surface.

The use of the proposed mass for abrasive tools in the processing of glass and glass makes it possible to increase the yield of glass products with a surface finish of 13 cells. up to 95%, eliminate the salting of the tool, stabilize the removal of glass in time, reduce the processing time of a glass unit by half by 20.

Claims (1)

The invention relates to the manufacture of diamond-abrasive tools and can be used for the preliminary polishing of metal materials, such as glass, glass. A known abrasive mass based on an organic binder for the manufacture of abrasive tools comprising chromium oxide. A tool made from a known weight improves the cleanliness of the surface to be machined, however, the brushing of the tool takes place, which leads to a decrease in productivity. The purpose of the invention is to increase the productivity of the tool by eliminating its salinacy. The goal is to achieve that iron sulphate is introduced into the mass as a filler with the following ratio of components, wt.%: 4.5-11.5 Abrasive Epoxy 40.0-50.0 2.5-6.0 Hardener 5.5- 11.5 Plasticizer Chromium oxide 22.0-35.0 Ferrous sulphate 3.0-8.5 Ferrous sulphate is a salt soluble in water, which, when operated in an aqueous medium, is washed away from the abrasive mass, which contributes to the renewal of the tool surface. In addition, iron sulphate is a chemically active substance with respect to glass and cycl1. As a result of the interaction of these materials, the surface layers of glass and screening are transformed into easily processed gel-like layers consisting of silicon oxide, eliminating the clogging of the tool, stabilizing the removal of glass over time, and increasing the productivity of the process. Depending on the hardness of the material being processed, synthetic diamonds, elbor or silicon carbide are taken as an abrasive powder. Example. Component weights are placed in porcelain cups, weighed on an analytical balance, then mixed in a laboratory enameled mixer until a homogeneous abrasive mass is obtained. The abrasive is poured into a mold and polymerized (cured) in the next mode for 24 hours, then for 4 hours. The introduction of iron sulfate accelerates the polishing process only within certain limits of its concentration in the abrasive tool. Its low concentrations (less than 3.0 9% by weight) do not accelerate the polishing / abundant (more than 8.5% by weight) slow down the process, which is associated with an increase in the acidity of the medium and the formation of a silica gel on the treated surface of the protective film. The use of the proposed mass for an abrasive tool in the processing of glass and sieve makes it possible to increase the yield of glassware with a 13 cl clean surface. up to 95%, eliminate the brining of the tool, stabilize the removal of the glass over time, reduce the processing time of the glassware unit by half. inetti of inaccuracy of claim No. Formula of the Invention The mass for the manufacture of an abrasive tool containing an abrasive, an oxide resin, a hardener, a plasticizer, chromium oxide, and a filler, which makes it possible amoi, iron sulphate is introduced as a filler mass at a ratio of components, sec.%: 4.5–11.5 Epoxy abrasive 40.0–50.0 2.5–6.0 hardener 5.5–11.5 Plasticizer Chromium oxide 22.0-35.0 3.0-8.5 iron sulfate Sources of information, taken into account during examinations 1. USSR Author's Certificate 323427, cl. From 09 G 1/02, 1969.