SU1058988A1 - Paste for decorative polishing of metal product surface - Google Patents

Abstract

PASTE FOR DECORATIVE POLISHING OF THE SURFACE OF METAL AND BWD PRODUCTS, containing abrasive, stearin, oleans: new acid, soda ash and kerosene, which, in order to improve the polishing properties, reduce the removal of Me of tal when polishing products from colored metals and stainless steel, improving working conditions, it contains titanium dioxide pigment as a form in the following ratio of components, May. %: Titanium dioxide 65-75 pigment 21-31 Stearin. 1.8-3.0 Oleic acid Calcined 0.2-1.0 soda Ostyl Kerosene SL

Description

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This invention relates to pastes for decorative polishing of products from stainless steel, gold and other non-ferrous metals, gold-plated surfaces, for example, in jewelry industry, household chemicals, for the manufacture of metallographic sections in mechanical engineering and in other areas. Known paste containing titanium carbide ij as an abrasive. Such paste is used for finishing and grinding metal surfaces, but cannot be used for decorative polishing because of its large grain size (-10 µm), which does not ensure sufficient decorativeness of the product to be polished (roughness, gloss ). Furthermore, the titanium carbide contained in the paste is expensive. The closest to the technical essence and the achieved effect is a paste for decorative polishing of the surface of metal products containing abrasive, stearin oleic acid, soda ash and kerosene (j2j. Known paste contains cheaper abrasive compared to titanium carbide, however, due to low hiding power (covering ability) and relative coarseness it is not effective enough for decorative polishing of details. In addition, the hexavalent chromium compounds that are part of the paste are toxic, which contributes to unfavorable working conditions due to possible acute and chronic intoxication of the workers. Another disadvantage of the paste is that it removes the surface layer from the polished product. This leads to losses, especially when processing products from precious The aim of the invention is to improve the polishing properties, reduce the removal of metals when polishing products from non-ferrous metals and stainless steel, improving working conditions. This goal is achieved by the fact that the known paste for decorative V polishing of the surface of metal products containing abrasive, stearin, oleic acid, soda ash and kerosene contains pigmented titanium dioxide as an abrasive in the following ratio of components, wt%: Titanium dioxide pigment 65- 75 Steorin21-31 Oleic acid 1.8-3.0 Caldinated. soda 0.2–1.0 Kerosene. Remaining To obtain a paste in a tank on a steam boye at 50 ° C, a wax sample is melted (paraffin or stearin), titanium dioxide, oleic acid, kerosene, surfactant are added to the melt. The mixture is heated, stirring, until a homogeneous mass is obtained. Due to the fact that the granularity of titanium dioxide is 0.20, 8 microns, the abrasive forms a molecular dispersion with an organic base, which has increased opacity with; 1: polishing and polishing properties that improve the cleanliness and brilliance of the polished surface. Three paste compositions are prepared and each sample is processed with 4 samples of pasMepcavt 40x50x2 Yul from nickel silver. The paste is applied to the sample surface in a thin layer, then wipe the surface with a dry cloth until the paste is completely removed. Polished parts do not need to be washed. The quality of the surface after polishing is determined by the parameter of the roughness of the micrometers under the surface of the metallographic microscope MIM-8 and the profilograph of the profile-meter 201. The full strength of the paste is determined by the method of GOST 291273 - Chromium oxide technical. Tests of three variants of the composition of the proposed paste gave the results presented in the table.

3.0

1.8

2.2

As can be seen from the table, the surface roughness after b processing by the proposed paste is lower than after the treatment of the known one, which results in a one-class increase in the surface cleanliness to improve the decorative appearance of the product. This is explained by an increase in the hiding power and the polishing ability of the paste.

Technical advantages of the paste

In comparison with chrome polishing, PCP paste (of the type TOY) consists in improving the quality of polishing, i.e. in reducing roughness.

0.8 0.50 0.00135 Non-toxic, 01

0.2 0.100 0.00138 Idem

0.01

- -

0.2 0.200 0.00140

0.01

(0.020 R-)

an increase in the gloss of the polished surface and in a reduced :: and metal removal. The working conditions are improved due to the lack of toxicity of the proposed paste, the elimination of possible acute and chronic occupational intoxication of workers.

Practical use of the paste is intended for enterprises in the metal-working laboratories and measurement laboratories, and it is also possible to use household chemicals for polishing consumer goods.

Claims (1)

/ PASTE FOR DECORATIVE POLISHING OF SURFACE OF PRODUCTS FROM METAL-,, BW, containing abrasive, stearin, olei ·, new acid, soda ash and kerosene, characterized in that, in order to improve polishing properties, reduce the removal of metal when polishing products from non-ferrous metals and stainless steel, improving working conditions, it contains pigment titanium dioxide as a forming material in the following ratio of components, May. %: Pigmented titanium dioxide stearin. Oleic acid soda ash Kerosene 65-75 21-31 1.8-3.0 0.2-1.0 Else S