SU1263661A1 - Frit for enamel coating of steel - Google Patents

Abstract

The purpose of the invention is to increase the temperature coefficient of linear expansion and reduce the number of pigments in the preparation of colored coatings. According to the invention, the frit for the enamel coating for steel contains, in wt%: SiO 35-40; 2-7.5; 12-15; 14-18; 1-3.5; TiO, 3-7; 5-7.5; ZrO 0.5-3.5; MgO 0.5-2; CaO 0.8-2.5; ZnO 0.5-5; mo 0.5-6; 0.25-3, moreover, the ratio of MnO to FejO is 2. The proposed composition has a impact strength of 0.11-0.14 kgm, TCRNR

Description

The invention relates to systems of non-ferrous anti-corrosion color-free glass-free enamel coatings on thin sheet low-carbon steel and can be used for household electrical engineering, household appliances, commercial equipment and gas appliances.

310 „

39.30

A1.0

7.30

WHO

14.80

i6.00

3.50

T10 „

4.50

P “OS

6.00

ZrOa

1.00 MgO 0.80

Cao

2.00 MnO 2.00 ZnO 1.80

Fe.Oj.

1.00 2 MnO

Fe; o;

To prepare the frit colored vitreous using the following shihtnye materials: quartz sand, borax crystalline, sodium nitrate, aluminum hydroxide, potassium nitrate, manganese paste, calcium carbonate, trisodium phosphate or tripolyphosphate, zircon ore, zinc oxide, titanium dioxide, magnesium oxide and iron oxide.

After pre-mixing, the charge materials are poured into an industrial rotary kiln on a hot fuel and cooked at 1200-1250 ° C for 85-95 minutes, followed by granulation on water.

The grinding of enamel is carried out in a ball mill to a fineness of 8-10 units (in a vessel of Lysenko, Azarov method), the weight of which is 1.72-1.75 g / cm.

The following components are loaded into the mill.

The purpose of the invention is to increase the temperature coefficient of linear expansion and reduce the number of pigments in the preparation of colored lokrati.

The invention is illustrated by the following specific compositions of frits, containing, in wt.%:

35.00 40.00

39.70

7.00- 7.50 2.00

15.00 12.00 14.50

14.00 17.45

18.00

3.40 1.00 3.30 4.30 7.00 3.00

6.80

7.50

5.00

0.50

3.50

1.50 0.50 2.00 1.00

2.30

0.80

1.00

6.00 0.50 4.00

2.00 0.50 5.00

3.00

0.25

2.00

2

2

2

Frit100

Clay4-5

Pigment

(1024,1038,

1016,1018,159,

VK-45) 1-1.5

Chloride

potassium, I

Sand

ground1-3

Water35-45

The enamel slip is applied to preloaded parts, for example, from 0.8 KP steel in a known manner, dried and fired in a seven-toned conveyor electric furnace for 3-5 minutes at a temperature of 680-850 ° C.

The table shows the properties of the proposed frits. 126012001250

720-820720-800700-820

um 0,130,110,14

102

Consumption of pigments of yellow, orange, red, brown per 100 mach. frit,

May.4.

1250 700-820 0.12

100

98

101

1-1.5

1-1.5

equals 2.

Claims (1)

The claims ₂₅ Frit for enamel coating for steel, including Si0 ₂ , AL, O ₃ , Β ^, Ο ^, Na, O, K, 0, TiO ,, P, 0 ₆ , ZrO _t , MgO.CaO, ZnO and manganese oxide, characterized in that, in order to increase the temperature coefficient of linear expansion and reduce the number of pigments in the preparation of colored coatings, it additionally contains Fe, 0 ₃ , and as Manganese oxide ⁵⁵ contains MnO in the following component ratios, May.%: SiO 35-40 A1 _g O ₃ 2-7.5 in, about ₃ 12-15 Na 0 14-18 K ₂ 0 1-3,5 TiO, 3-7 ^p ₂ about ₅ 5-7.5 ZrO, 0.5-3.5 MgO 0.5-2 Cao 0.8-2.5 Zno 0.5-5 MnO 0.5-6 Fe, 0 ₃ 0.25-3, moreover, the ratio of MnO and Fe, O _a is 2