RU1794906C - Enamel slip - Google Patents

Abstract

Usage: to obtain a single-layer glass enamel coatings for enameling products of the pelvic apparatus, sanitary ware and household products. The inventive: contains, by weight: frit 100, clay 5-6, borax crystalline 0.2-0.25, silica sand 15, water 45-50, zinc oxide 2.5-3.5, sodium octaborate 0 , 15-0.20, VK-95 4-5.5 ceramic paint, and the frit has a composition, wt.%: Silicon oxide 42-46 BF $ f (2. Boron oxide 15-18 BF V20z, titanium oxide 0.5 -1.8 BF Ti02, alumina 5-7 BF ABO3, calcium oxide 4-7 BF CaO, magnesium oxide 0.7-3 BF MdO. Sodium oxide 18-23 BF Na2O, iron oxide 0.9-2.9 BF Re20z, cobalt oxide 0.2-0.8 BF CoaOz, nickel oxide 1-2.8 BF MJ, manganese oxide 0.5-2.5 BF Mp02, fluorine 0.7-2 BF F. Coating characteristic: firing interval 820 - 880 ° C, spreadability 55-75 mm, adhesive strength 5 points, spall area less than 1%, coating color brown-red, 3 tablets (L

Description

The invention relates to slip compositions for the production of single-layer glass-enamel coatings and can be used in the enameling of gas equipment, sanitary ware and household products.

Known composition of the enamel coating, containing, parts by weight: frit 100, quartz ground sand 1-3, clay 4-6, potassium chloride 0.01-0.1, water 35-45, fluorspar 0.5-4, moreover, the total content of quartz sand and fluorspar is 2-6.5, and the frit contains, wt.%:

CaO0.2-1.5

Na20 18-21

K202-4

Li200.5-2

ZnO 0.5-3

CuO 0.3-0.6

Mn02 0.5-1

Co20z 0.8-1.4

Re20z 1-5

The disadvantage of this composition is the inability to obtain a single-layer coating of brown-red color.

The closest is the composition of the enamel slip 2 containing, by weight:

Frit100

Clay5-6

Quartz sand15

Borax is crystalline 0.4-0.6

Water45-50

VI y

4b

8

Moreover, the frit contains May.%:

SI0242-46

B20z 15-18

TI020.5-1.8

A120z 5-7

CaO4-7

MdO0.7-4

NaaO 18-23

RB20z 0.9-2.9

So20z 0.2-0.8

NiO1-2.8

Mpr2 0.5-2.5

F 0.7-2

However, when using the known residue, it is not possible to obtain a groundless puff of brownish-red color.

The aim of the invention is to reduce the firing temperature and to obtain a brown-red colorless coating.

The enamel slip to obtain a single-layer coating contains a frit containing May. %: Si0242-46

820315-18

TU20.5-1.8

A 20z5-7

CaO4-7

MdO0.7-4

Na2018-23

RegOz0.8-2.9

So20z0.2-0.8

N101-2.8

Mn02Q.5-2., 5

F6.7-2 -100 May. hours:

Clay5.6 m.h.

Borax

crystalline 0.20-0.25 wt.h.

Sand

quartz 15 parts by weight

Water45-50 parts by weight

Zinc oxide 2.5-3.5 parts by weight

Octaborate

sodium 0.15-0.20 parts by weight

Paint

ceramic

VK-954-5.5 parts by weight

The enamel slip described herein will provide a brown-red, uncoated coating with a low melting point.

Enamel is prepared using the following technology.

Raw materials: silica sand, borax technically, boric acid, titanium oxide, alumina, chalk, magnesium oxide, nitrate

sodium, iron oxide, cobalt oxide, nickel oxide, manganese oxide, fluorspar are thoroughly mixed in a mixer for 10-15 minutes. Melting is carried out in a batch furnace at 12401270 ° C for 150 minutes, then poured into cold running water.

To prepare the enamel slurry, the components indicated in the proposed composition are loaded into a ball mill and

grind to a fineness of grinding of 18-20 units in a Lysenko vessel, specific gravity 1.65-1.68 g / cm3.

An enamel slip is applied to the articles by dipping and spraying. After glazing, the articles are dried and fired in an electric oven for 3-5 minutes in the temperature range of 820-880 ° C.

After firing, brown-red products with a shiny surface are obtained, corresponding to TU 51-02-254-88.

The compositions of enamel slips are given in table 1; as the frits, the compositions shown in Table 2 can be used. Properties of formulations and coatings on them

basis are given in table.3.

The developed enamel slip compositions have a brown-red color with a low melting point, and have an adhesion strength of 5 points.

Enamel combines at the same time the functions of cover and soil, which eliminates deformation and chips on the products during the firing process.

The compositions give a stable brown-red, shiny, smooth, defect-free coating with a low melting point ..

Claims (1)

SUMMARY OF THE INVENTION Enamel slip comprising a frit, formulation, May. % g SI0242-46 V20z 15-18 TU2 0.5-1.8 5-7 CaO4-7 MdO 0.7-3 clay, quartz sand, crystalline borax and water, characterized in that in order to reduce the firing temperature and to obtain a brownish-gray primerless coating, it additionally contains zinc oxide, sodium octaborate and VK-95 ceramic paint in the following ratio of components, parts by weight: Frit100 Clay 5-6 Quartz sand15 Crystal Drill 0.2-0.25 Water45-50 Zinc Oxide 2.5-3.5 Sodium Octabrate 0.15-0.20 Ceramic VK-954-5.5 paint Table 1 table 2 Table 3