SU380598A1 - GLASS - Google Patents

Description

FIELD OF THE INVENTION The invention relates to a glass composition used for lol che decorative items.

Known glass, including Si02, AO, MgO, RjO, F, CuO, NiO. .

The aim of the invention is to obtain glass with different colors on the surface and in the volume.

This is achieved by the fact that the glass additionally contains RegOz, Cg3O3, PsOs, CaO with the following ratio of components (weight / o);

SiOa

55-59

ALO 7-11

MgO 4-8

RzO 6-9

F 2-4

CuO 0,2-4

NiO + CrgOs-fFzOa 0.6-09

P205 0,2-10

CaO 10-14,

and ZnO 1.2-2.8.

In order to obtain glass, the use of a bristle follows the following composition (weight h):

Perlite55-65

Quartz sand5-12

Dolomite or .moel 30-40 Phos | forny ahydride 0,2-16 Gly ozm0,1-5

Sodium fluorosilicate 8-12 with addition of 0.2–4% copper, 1.2–2.8%

2

tszha in oxide form or in the form of ..metalche, skoshochka.

The molten nipn temperature of 1400-1460 ° C is molded by means known in glassmaking.

Formed for heat treatment, molded products are maintained in the temperature range of 680-980 ° C for 5-6 hours (the temperature rises at a rate of 60 ° C per hour).

A compulsory condition in the heat treatment process is the presence of a weakly oxidizing atmosphere in the furnaces.

The cooling of the fusible products is performed at a rate of 80 ° C per hour.

As a result of the heat treatment, the products turn out to be of a dark dark color, and in the volume of y they remain a light color.

In glasses containing 0.2–4% of copper oxide, as a result of heat treatment, the surface is covered with a dark (smoky) color, so that the volume retains its whiteness.

The products obtained by the method described above, according to the dielectric pacifier between the two (overlapping and volume give asymmetry. The surface dark film has 10–18 times less resistance than the white base mass of the product.

The table shows the compositions of glasses and their properties:

Table

Table continuation

Subject invention

Claims (2)

1. Glass, including SiOz, HbOz, MgO, R2O, F, CuO, NiO, characterized in that, in order to provide different colors on the surface and. in volume, it additionally contains RegOz, Cr20z, PzOs, CaO in the following ratio of components (wt.%): 2. Glass according to claim 1, characterized in that 25 is d0 (zero "iteldo contains ZnO 1.2-2.8%.