SU1458336A1 - Enamel composition - Google Patents

Abstract

The invention relates to the manufacture. Of pigment-free colored enamels for coating household articles and gas appliances. In order to reduce the cooking time and to obtain a coating of tobacco-colored enamel, it contains, in wt.%: SiOj 23-27; Ali0.i6-10; BiO, 14-19; 5-7; 16.0-18.5; TiOi 6.0-8.4; , 1.0-2.5; ZnO 3.5-6.0; CaO 3.2-6.5; MgO 1.3-3.5; MnOj 1.5-3.0. The cooking time of the frit is 70-75 minutes. The coefficient of thermal expansion of the enamel (101-

Description

one

The invention relates to silicate-rich low-temperature pigment-free colored glass enamels and can be used to obtain silicate, coatings on household appliances and gas appliances.

The aim of the invention is to reduce the cooking time and obtain tobacco-colored groves.

The specific compositions of the enamel are shown in table 1, and their properties in table 2.

For the preparation of the charge, the following charge materials are used: quartz sand, trisodium phosphate, boric acid, sodium nitrate, alumina, magnesium oxide, manganese oxide.

titanium oxide, calcium oxide, zinc oxide and chromium oxide.

The frit was boiled at 1200-1230 ° C for 70-75 minutes, followed by granulation in water.

In order to obtain a pshiker and a frit, they grind it in a ball mill, adding 35–45% water, 4–5Z clay, magnesium oxide O, 3–0.5% of the mass of the frit, to a grinding fineness of 8 units. (on the vessel Lysenko, Azarov method), the proportion of 1.72-1.74 g / cm.

The resulting schlicker is sprayed on pre-primed steel samples and, after drying, is burned at 760-780 seconds for 3 minutes.

cl

00 WITH

00

but

31458336

The proposed composition allows shortening the cooking time and obtaining the fry cooking time, making tobacco-colored digs, it has an additional color-stable coating that does not contain CtjOj, and as a result of its manganese oxide, MnOj with the following, superior composition known, ratio of components, wt.%:

, 0-27,0

AljO, 6.0-10.0 .BjO, 14.0-19.0 10

Claims (1)

and the absence of a toxic element (fluorine) in the composition of the mixture improves the condition of production WIR, which contributes to environmental protection. Invention Formula 5.0-7.0 16.0-18.5 6.0-8.4 3.5-6.0 1.3-3.5 1.5-3.0 1.0-2.5 Enamel, including SiO,, Bj.0, P2.05. , TiOj, ZnO, MgO, CaO, manganese oxide, distinguishes between 15 and so that, for the purpose of scrapping6, 0-10.0 14.0-19.0 5.0-7.0 16.0-18.5 6.0-8.4 3.5-6.0 1.3-3.5 1.5-3.0 1.0-2.5 25,426,626,827,023,0 7,56,06,310,08,5 18.519,018,016,014.0 17.616,516,018,518,5 8.48,48,36,08,0 6,15,06,47,07,0 5,03,54,76,05,5 1,02,01,52,52,5 3,03,53,21, 33.5 6.06.55.83.26.5 1.53,03,02,53,0 Cooking temperature, With cooking boom, min 1230. 12301220 1220 1200 1200-1260 757570 70 70 85-95 Table 1 Table 2 Composition Property -: 1 h G 2 3 I I | I9 known 720 - 800700-820 Roasting interval, With Spreadability at 780 C, mm Color Coefficient of thermal expansion, ei Yu Oh, hail Relative adhesion strength of the coating (impact), j The mirror reflection coefficient of coatings annealed at 780 ° C, 3 min,% (determined on a BF-2 instrument) Purity of color,% Brightness,% 108 720 - 800700-820 42 43 42 43 38-40 Tobacco 105 Depending on pi 107 101 102 98.0-10 0.52 0.54 0.51 0.54 0.52 1.1-1, 61 62 84 83 21 21.5 61 .83 22 64 85 20 64 84 21 In all compounds, and known toxic fluorine is not contained. Composition -: 43 720 - 800700-820 42 43 42 43 38-40 Tobacco Depending on the pygmy ta 108 105 107 101 102 98.0-102.0 0.52 0.54 0.51 0.54 0.52 1.1-1.3 62 83 21.5 61 .83 22 64 85 20 64 84 21