SU608772A1 - Glass - Google Patents

Description

Table 1

In both qualitative and quantitative terms, the composition of the glass offered is advantageously different from that of the iroti type glass.

PHO was replaced with CaO in order to prevent the processes of stratification of the glass melt and reduce the cost of the composition. The color of the glass melt has been improved and its resistance to the formation of secondary bubbles, which appeared in the prototype glass with minor fluctuations in the temperature of production, has been improved due to the fact that NaO is injected with soda and nitrate, excluding sodium sulfate.

To neutralize the green color imparted to the glass by impurity iron oxides, physical decolourants are additionally added.

In order to improve working conditions, reduce the table 2

environmental pollution and cheapening of the composition, the content of Az2O3 was reduced from 0.16 to 0.1%. The BaOZ content was reduced from 1.36% to 0.85% in order to reduce the cost and increase the stability of the technological properties of the glass mass.

On each charge spent three boiling in dvuhsotlitrovyh pots fourteen-oven. Cooking and working properties were determined (the ability to be molded by the method of blowing and pressing, the speed of cooking and clarification, chemical homogeneity, density, and translucency of glasses were measured).

In tab. 3 shows the characteristics of the glasses of the proposed formulations and glass prototype, welded in a pot.

Table 3

Composition 2, as having the best characteristics, was brewed after cold repair in a bath of a mechanized production furnace, in which a glass prototype was made before the repair.

The resulting glass melt is characterized by stability properties, there are no cases of bubbles and striae on the products.

In tab. 4 shows the basic properties of the glass mass of composition 2 and the composition of the prototype welded in the same bath furnace.

Table 4

As can be seen from the above tables, the proposed glass has more acceptable properties for a two-stage mechanized production of products on the leg than a prototype glass. This is confirmed by the increase in the productivity of machines from 12-14 to 16-17 thousand units per day. Glass is introduced into production.

Claims (2)

1. Glass for the mechanized production of high-quality tableware in a two-step process, including SiO2, Na2O, KaO, CaO, BaO, BrOg, HbOz, A82Oz, characterized in that, in order to increase the uniformity of glass 5 and its translucency in the visible region of the spectrum, it contains these components in the following amounts, wt. %: SiOa69-72 NajO8-15 0 K202-9.0 CaO4.8-9.0 BaO1-5 UZOZ0,5-1,0 AlaOa0,5-2,5 five A82Oz0,1-0,2 2. Glass according to claim 1, characterized in that, in order to increase the whiteness, it further comprises a weight. %: Se0.002-0.004 Nd2030,01-0,02 0 NiO0.001-0.0015 Sources of information taken into account in the examination 1. USSR author's certificate No. 451642, cl. With OZS 3/04, 1973. 2. The patent of England No. 1353935, cl. With 1M, publ. 1974.