SU836066A1 - Polishing composition - Google Patents

Description

The invention relates to the processing of optical glass, such as quartz and optical sieve, and can be used in the optical-mechanical and optical-electronic industries in the manufacture of optical components. A polishing compound, abrasive filler, glycerol and a mixture of polyethylene glycol higher fatty esters are known. alcohols ij. This composition is intended for polishing metal surfaces. The aim of the invention is to improve the quality of the surface of optical components during their polishing and polishing. This goal is achieved by the fact that, as an abrasive filler, it contains poliri and also contains zodi in the following ratio, wt.% : 25-30 Polyrite 0.2-1 Glycerol A mixture of polyethylene glycol ethers of the highest 0.1-0.5 fatty alcohols Else Vlda To obtain the proposed composition, the chemical components are weighed and dissolved in water . Then the calculated weight of polyrite is added. In order to assess the influence of components on the process of polishing and finishing parts from an optical ceramic of the brand SO-115-M, the dependence of the quality of the treated surface and its scattering coefficient on the concentration of surface-active substances was investigated. The processing was carried out on a ZSH-35OU machine with constant technological parameters: the number 9 of spindle speeds was 12 rpm, the number of carriage moves was 16 x / min, the polishing pad was SP-4 grade peat-cane resin, the treatment method was RTM deep polishing 3-46-70, the finishing time for all types of the tested compositions is the same and equal to 3 hours. The ambient temperature is 22-24 ° C. The substrates used are mirrors with a diameter of 30 mm, a thickness of 8 mm, made of carbon steel CO-115-M and quartz. The delivery of the suspension was carried out manually, brushing it, without letting it dry.

The surface purity was determined under a microscope MBS-2 at 16.

Compositions for polishing are given in table. 1, the test results are listed in Table. 2

The results of the comparative tests show that the use of known compositions for polishing optical glass does not allow to obtain polished surfaces with high purity (). The composition flj due to its high viscosity forms a thick layer of fluid between the part and

tool, reducing the removal of material. In addition, the diamond micropowder places deep scratches on the surface.

The proposed composition, containing surfactants, has good wetting and lubricating properties. This makes it possible to obtain a surface with a low coefficient of light scattering (less than 0.01%, which improves the performance characteristics of optical components, for example mirrors made of quartz and glass).

Table 1

Up to 100 up to 100 up to 100

Water Diamond

Claims (1)

Invention Formula A polishing compound containing an abrasive filler, glycerin, and a mixture of polyethylene glycol ethers of higher fatty alcohols, in order to improve the surface quality of the optical table 2 Note When polishing and fine-tuning them, it contains as a abrasive filler palite and additionally contains water in the following ratio of components, wt.%: 25-30 Polyrite 0.2-1 Glycerol 5 A mixture of polyethylene glycol ethers of higher fatty alcohol, 1-0.5 WaterEverything else 836066 6 Sources of information taken into account during the examination, “1. USSR author's certificate No. 299524, cl. From 09 G 1/02, 1969.