SU1162762A1 - Priming enamel frit for cast iron - Google Patents

Abstract

FRITTA GROUND ENAMEL FOR A CAST IRON, including SiOj. impact strength, it additionally contains FeO, MnO as a manganese oxide, and SOj as a sulfur compound with the following ratio of components, wt%: -59.78 53.17 SiOi -0.3 0.1 1.3 F 0.8-0, 07 0.01Crj .05-0.3 0.1MnO -13.7 9.1BL 3.4-13, 7 CaO 0.6-1, 2 TiOj, 0.2 -0, 3 (L -0.3 0.1 SO, -8.6 7.5 AljO -11.7 8.3 0.2 -0.9 MgO -0.7 0.2 FiOs -0.06 0.01 FeO

Description

The invention relates to the composition of soil enamels intended for enameling cast iron products such as baths, shower trays, etc. The composition of soil enamel dp cast iron is known, containing, in wt%: SiOi 67.7, 12.18; AljO 5.74; FsjOj 0.3-, CaO 1.78; 11.3j F 1.0 Cl. However, the cost of this soil is quite high. The closest is the composition of the Frit of the soil enamel for cast iron containing, wt.%: SiOj 35-60, BtO, 6-15, TiOj. 4-8, 0.1-10 F 1.5-5, but at least one oxide from the group Naj, 0,, 14-2 at least one oxide from the groups MgO, CaO, ZnO, SrO, BaO 4-11 at least one oxide from the group CoO, CuO, NiO, MnOg, 1.5-9, S 0.05 and at least one oxide from the group, ZrOg, SnOg., Pj.05-, Vj, 0f, , MoO,, WOg 0.5-8 A disadvantage of the known composition is the low strength of the coating per impact. The aim of the invention is to increase impact strength. The goal is achieved by the fact that the frit of ground enamel for cast iron, including SiOj.,,,, CaO,, F, TiOj, MgO,,,,, manganese oxide and compound, also contains FeO, contains and as a sulfur compound SOj, in the following ratio of components, wt%: SiOsL53,17-59,78 St "i9.1-13.7, 5-8.6 Fej.0j0.1-0.3 F0, 8-1.3 TiOj.0.6-1.2 KdO0.2-0.3 SOi0.1-0.3 CaO3.4-13.7 MgO0.2-0.9 PjOj-0.2-0, 7 feO0.01-0.06 8.3-11.7 0.01-0.07 0.1-0.3 The enamel coating is prepared using cupola slags (5-30% by weight) and waste titanium powder enamel (5-15 wt.%). Slags are formed as by-products in the smelting of cast iron — in cupolas, which are pelletized into water to produce small granules. Fibrous slags contain the following components, wt%: SiOg. 41.42, SOj 0.97; FeO 0.2; , 0.21; TiOa 0.70; 9.67; CaO 41.93; MgO 2.76; MnO 1.18; 0.22, 0.37; Na 0 0.37. Titanium powder enamel waste is formed with kiln exhaust gases during transportation, grinding, enameling, and in settling tanks. Titanium powder enamel contains the following components, wt%: SiOa 21.51} K, O 1.28; 17.24; MgO 0.73, BS.OJ 26.62-, TiO 6.87; AUp, 16.98, 4.5, F 4.26; , 0.01. T.PL. The charge 1220-1240C, the duration of melting 1 h - 1 h 20 min. The melted and granulated water frit is ground in a MOKjJbw method to a grinding fineness of 20-24 ml (residue on a Lysenko device). Ground enamel is applied by slip method on cast-iron products and burned in a muffle furnace at 900-920 C. Slip additives, per 100 mash. Frits are given in Table. 1. Properties of the compositions are given in table. 2. The use of the proposed formulations will allow to increase the adhesion strength of the enamel coating with the cast iron, as well as reduce its cost due to the use of cupola slags and waste of titanium powder enamel.

Table i

.Thermal expansion coefficient, 3L 10 degrees 253 266 0,0189 0.0207 air flow rate, m

Impact strength

0.59 J

1.18 1.77 2.35 1.18 1.77 272 273 276 279 0.0213 0.0212 0.0215 0.0218

Claims (1)

SOIL FREAM FRIT FOR CAST IRON, including SiOj., B _t 0),, Al _t Oji Re ^ О ^, СаЦ, Na /), F ', TiO _t , MgO, Cr ₂ O ₃ , KJ), Pt0 ^, oxide manganese and a sulfur compound, characterized in that, in order to increase impact strength, it additionally contains FeO, as an MnO oxide, as MnO, and as a sulfur compound, SOj in the following ratio of components, wt.%: SiOt 53.17-59.78 Fe ^ oj 0.1-0.3 F ' 0.8-1.3 Cr _x O> 0.01-0.07 MnO 0.1-0.3 ΒΛ 9.1-13.7 Cao 3.4-13.7 TiOt 0.6-1.2 K _t 0 0.2-0.3 so ₃ 0.1-0.3 Aljoy 7.5-8.6 Na ₂ 0 8.3-11.7 MgO 0.2-0.9 Fios 0.2-0.7 FeO 0.01-0.06