SU1456154A1 - Electrolyte for electric polishing of metal frames of dentures - Google Patents

Abstract

The invention relates to medicine, orthopedic dentistry. In order to reduce galvanism in the oral cavity and improve the quality of prostheses, an electrolyte is used for the electrochemical polishing of the metal frameworks of cobalt-chrome alloy prostheses. The electrolyte contains sulfuric acid solution, glycerin and a complex additive to create an active-passive state of the alloy surface.

Description

one

The invention relates to a department of medicine, namely to prosthetic dentistry.

The purpose of the invention is to reduce galvanism in the oral cavity and to improve the quality of the prostheses.

The electrolyte for electropolishing metal cobalt chrome alloy and stainless steel denture frames contains concentrated sulfuric acid, cobalt chloride, ethyl alcohol and water in the following ratios x-components,%: 9S PE Glycerin S 10 Ethyl alcohol, Water 5-10 Chlorine cobalt 0.001-0.01

Concentrated chamois

Acid Remaining

Sulfuric acid is an aggressive component of the polishing solution. It etches the oxide film of a cobalt-chromium alloy and helps to smooth its surface. Dilution of sulfuric acid with water prevents overtraining of the metal surface. The ratio of sulfuric acid and water is regulated and selected so as to prevent over-etching of the alloy surface, leaving a smoothing effect high.

Glycerin, ethyl alcohol and cobalt chloride are complex additives, which, during electropolishing and adsorbing on the anode, contribute to the creation of active gas.

Have

four

145615A

solid state of the alloy surface, which is necessary for high-quality polishing.

In addition, the introduction of glycerol as a polyhydric alcohol increases the gloss intensity of the alloy surface. The beneficial effect of the trihydric alcohol additive (glycerin) mainly affects the anode reflectivity.

The electrolyte operates in the range and at a density

ten

temperatures of 20-60 ° C current 0.2-0.5 A / cm it exposure 3-5 min. The electrolyte is non-toxic and is easily dissolved with water after mining.

The proposed electrolyte is prepared as follows. 20

The calculated amount of sulfuric acid is carefully added to the measured amount of distilled water while cooling and stirring. Ethyl alcohol, glycerin and cobalt chloride are added to the dilute solution of sulfuric acid 2S successively while cooling, to avoid heating the solution. The electrolyte does not require working through the current;

Example: To 536 ml (64.999%) of concentrated sulfuric acid, 41.5 ml (5%) of distilled water was added with stirring, the solution was cooled, and 41.5 ml (5% by volume) were successively added while cooling. ) ethyl alcohol, 206 ml (25% by volume) of glycerol and 0 027 g (0.001% vol.) of chloride-6LibTa. All is thoroughly mixed and poured into the electroplating bath. The prosthesis prepared for polishing is electro degreased, washed with water.

accurate water and curtain on the anode rod on a special suspension of titanium.

PRI me R 2o K 412 ml (49.9ob.%

concentrated sulfuric acid is subsequently added 82.5 MP (10 vol.%) distilled water, 82.5 ml (10 vol.%) ethyl alcohol, 247.5 ml (30 vol.%) glycerol and 0.27 g (0 , 01 vol.%) Cobalt chloride.

Froze K 490 ml. (59.40% by volume) of concentrated sulfuric acid after successively adding: „G. G. , - 1. -.Go (MZ oa "DIS.ILLIROU. L. G1 k.ar 7 W / Y I ESTIMATED

thirty

bath water, 60 ml (7.27% by volume) ethyl alcohol, 235 ml (28.48% by volume) glycerol, and 0.036 g (0.007% by volume) of cobalt chloride.

Claims (1)

Invention Formula The electrolyte for electropolishing the metal frameworks of dentures from cobalt-chromium alloy of stainless steel containing concentrated sulfuric acid, polyhydric alcohol and water, in order to reduce electroplating in the cavity p and improve the quality of the prosthesis, as electrolyte alcohol is electrolyte. contains glycerin and cobalt chloride and ethyl chloride at the following compositional ratios TOV, Vol.% 5 Glycerin Ethyl Alcohol Water Chloride Cobalt Concentrated Sulfuric Acid 25-30 5-10 5-10 0.001-0.01 Rest accurate water and veil on the anode rod on a special suspension made of titanium. PRI me R 2O K 412 ml (49.9ob.%) 82.5 MP (10 vol.%) distilled water, 82.5 ml (10 vol.%) ethyl alcohol, 247.5 ml (30 vol.%) glycerin and 0.27 g (0, 01% vol.) Cobalt chloride. Froze K 490 ml. (59.40% by volume) of concentrated sulfuric acid successively added-. (MOH oa “DIS.ILLIRO S about -.Go (MZ oa "DIS.ILLIROU .. l. G1 k.ar 7 W / Y I OTCHLSHLTE 0 bath water, 60 ml (7.27% by volume) ethyl alcohol, 235 ml (28.48% by volume) glycerol and 0.036 g (0.007% by volume) of cobalt chloride. Invention Formula The electrolyte for electropolishing the metal frameworks of cobalt-chrome alloy stainless steel dentures containing concentrated sulfuric acid, polyhydric alcohol and water, characterized in that, in order to reduce galvanism in the oral cavity and improve the quality of the prostheses, the polyol alcohol contains glycerin and additionally cobalt chloride and ethyl alcohol in the following ratios of components,% by volume 5 Glycerin Ethyl Alcohol Water Chloride Cobalt Concentrated Sulfuric Acid 25-30 5-10 5-10 0.001-0.01 Rest