SU779322A1 - Enamel - Google Patents

Description

. . : 1 - The invention relates to ceramic production technology and is intended for household and artistic majolica and fine stone ceramics of low-temperature calcination. Known glaze 1, comprising the following components, wt. %; Si02 34.15-36.08; C.aO 5.65-6.02; 15.92-18.28; 13.20-15.7 RjO 7.67-8.60; 12.80-15.06; . MDO 4.09-4.29; TiO2 0.56-0.5; MpO 0.34-0.36, The disadvantage of this glaze is the high thermal expansion coefficient (58.4-60.5). 1 / hail The closest to the invention is the composition of the glaze 21, which includes the following components, by weight,%: SiOo 23.02-24.99; 7.93-8.16; CaO 6.16-6.92; TiOj 10.62-11.62; FegOa 0.15-0.16; 4.91-5.01; 0.92-0.94; 8203 8.16-9.98; MgO 0.15-0.16; ZnO 34.64-35.40. The disadvantage of this glaze is a high thermal expansion coefficient of 56.2 10 1 / hail. The purpose of the invention is to reduce the linear thermal expansion coefficient and obtain a chocolate-colored glaze. The goal is achieved by the fact that the glaze, including SiOj, TiOj, CaO, MgO,,, B-iO), additionally contains MpO2 and MpO with the following component ratio, wt.%, 14-40.02 TGOg.0.47 -0.54 ACjO} 11.85-12.38. . , 22-4.43 CaO3.45-3.65 MgO1.90-2.00 Na207.23-7.74, 40-1.47 V Oe21.30-25.75 MnOj5,, 00 MPO0.08-0 , 09. Andesite Tsikhis-Dzhvarskogr deposit 58-62, boric acid 18-22, borax () 13-15, MP025-7 are used as raw materials. Glaze is prepared according to technology. Raw materials are preliminarily crushed, mixed, and fritted at, after which 95% and Frit grinding mills are performed; refractory clay 5% j

To fineness residue on a sieve of 10,000 / resp / cm 0.1-0.2%. The resulting glaze is applied to the surface of products by spraying or dipping.

Components, weight,%

The composition of SiO (FejOj GdegO GSA GmdO 138.14 0.47 4.22 .11.35 3.451.90 239.17 0.48 4.24 .12.20 3.5151.95 339.91 0.54. 4.43 12 38 3,652.00:

In tab. 1 shows the composition of the proposed glazes.,

In tab. 2 - physical and chemical properties of glazes.

T a

persons I, O | K o1mpO I 7.74 1.4 0.08 25.75 5 7.36 1.430.08 23.54 6 7.231.470.09 21.30 7 Table 2 Composition

Dispersibility, sieve residue 10000 OTBj cm1

Three melting points Jfc;

0.15

0.2

0.1

Claims (1)

<claim-text> Formula of the invention </ claim-text> </ td> <td> <claim-text> cao </ claim-text> <claim-text> MDO </ claim-text> </ td> <td> <claim-text> 3.45-3.65 </ claim-text> <claim-text> 1.90-2.00 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Frosting, including TU <sub> 5 to </ sub> _ </ claim-text> </ td> <td> <claim> 2 </ sub> 2 </ sub> </ claim-text> </ td> <td> <claim-text> 7,23-7,74 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Ab <sub> 2 </ sub> O ", Pe <sub> 2 </ sub> O <sub> 3 </ sub>, CaO, MDO, Ia <sub> 2 </ sub> O, K <sub> g </ sub> 0, <sup> 50 </ sup> </ claim-text> </ td> <td> <claim-text> K <sub> 2 </ sub> O </ claim-text> </ td> <td> <claim-text> 1.40-1.47 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> different </ claim-text> </ td> <td> <claim> 2 </ sub> <<sub>? </ sub> </ claim-text> </ td> <td> <claim-text> 21.30-25.75 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> by the fact that, for the purpose of expansion and semi- </ claim-text> </ td> <td> <claim-text> MPO <sub> 2 </ sub> </ claim-text> </ td> <td> <claim-text> 5.00-7.00 </ claim-text> </ td> </ tr> <tr> <td> Chocolate-colored glaze, </ claim-text> </ td> <td> <claim-text> MPO </ claim-text> </ td> <td> <claim-text> 0.08-0.09 </ claim-text> </ td> </ tr> </ table> <claim-text> it additionally contains MpOg and MpO with the following ratio of components, weight,%: </ claim-text> <claim-text> 810g -38,14-40,02 </ claim-text> <claim-text> TU <sub> 2 </ sub> 0.47-0.54 &amp; 2Ο-Ϊ 11.85-12.38 D <sub> 2 </ sub> O <sub> 5 </ sub > 4.22-4.43 </ claim-text>