Energy-saving high-temperature radiating spray coating material for silicon steel annealing furnace as well as preparation method and application thereof

A high-temperature radiation and annealing furnace technology, applied in furnaces, furnace types, heat treatment furnaces, etc., can solve the problems of heat resistance, corrosion resistance, wear resistance, poor combination of coating and furnace lining, and restrictions on the promotion and application of refractory coatings, etc. Problems, to achieve good physical properties, shielding heat loss, high thermal infrared emissivity effect

Active Publication Date: 2019-01-04
SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing protective coatings have various problems such as unsatisfactory coating effect and poor protective effect, especially problems such as poor combination of coating and furnace lining, low density, poor heat resistance, corrosion resistance, and wear resistance. , which severely limits the popularization and application of refractory coatings in silicon steel annealing furnaces

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  • Energy-saving high-temperature radiating spray coating material for silicon steel annealing furnace as well as preparation method and application thereof
  • Energy-saving high-temperature radiating spray coating material for silicon steel annealing furnace as well as preparation method and application thereof

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Embodiment 1

[0022] This embodiment provides an energy-saving high-temperature radiation spray coating for silicon steel annealing furnace. The raw materials include: in weight percentage, pure corundum 50%, silicon carbide 5%, zirconia 6%, alumina 12%, zirconium silicate 22%, La 2 O 3 5%, and the particle size of the pure corundum is ≤0.05mm, the particle size of the silicon carbide is 10-50nm, the particle size of the zirconia is 120-150nm, the particle size of the alumina is 20-40μm, silicic acid The particle size of zirconium is 5-15μm, the La 2 O 3 The particle size is 70-100μm.

[0023] The above-mentioned silicon carbide, zirconia, alumina, and zirconium silicate are uniformly mixed according to the ratio and then high-temperature sintered to obtain a solid solution. The high-temperature sintering temperature is 1200°C and the time is 1h. The solid solution is ground and crushed with pure corundum, La 2 O 3 High-temperature doping, high-temperature doping temperature 1000 ℃, time is 3 h...

Embodiment 2

[0041] This embodiment provides an energy-saving high-temperature radiation spray coating for silicon steel annealing furnace. The raw materials include: in weight percentage, pure corundum 47%, silicon carbide 7%, zirconia 7%, alumina 12%, aluminum silicate 20%, Ce 2 O 3 7%, and the particle size of the pure corundum is ≤0.05mm, the particle size of the silicon carbide is 10-50nm, the particle size of the zirconia is 120-150nm, the particle size of the alumina is 20-40μm, silicic acid The particle size of aluminum is 5-15μm, the Ce 2 O 3 The particle size is 70-100μm.

[0042] The above-mentioned silicon carbide, zirconia, alumina, and aluminum silicate are uniformly mixed according to the ratio and then high-temperature sintered to obtain a solid solution. The high-temperature sintering temperature is 1250°C and the time is 2h. The solid solution is ground and crushed with pure corundum and Ce 2 O 3 High-temperature doping, high-temperature doping temperature 900 ℃, time is 3 ho...

Embodiment 3

[0048] This embodiment provides an energy-saving high-temperature radiation spray coating for silicon steel annealing furnace. The raw materials include: 55% pure corundum, 5% silicon carbide, 6% zirconium oxide, 10% alumina, sodium silicate in weight percentage 20%, Ce 2 O 3 4%, and the pure corundum particle size≤0.05mm, the silicon carbide particle size is 10-50nm, the zirconia particle size is 120-150nm, the alumina particle size is 20-40μm, silicic acid The particle size of sodium is 5-15μm, the Ce 2 The particle size of O is 70-100 μm.

[0049] The above-mentioned silicon carbide, zirconia, alumina, and aluminum silicate are uniformly mixed according to the ratio and then high-temperature sintered to obtain a solid solution. The high-temperature sintering temperature is 1250°C and the time is 2h. The solid solution is ground and crushed with pure corundum and Ce 2 O 3 High-temperature doping, high-temperature doping temperature 900 ℃, time is 3 hours, energy-saving high-temp...

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Abstract

The invention provides an energy-saving high-temperature radiating spray coating material for a silicon steel annealing furnace. The energy-saving high-temperature radiating spray coating material comprises the following raw materials: pure corundum, silicon carbide, zirconium oxide, aluminum oxide, a silicate refractory material and a rare earth element oxide. The invention further provides a preparation method of the energy-saving high-temperature radiating spray coating material. According to the invention, the blackness of a base material is improved, excellent properties such as heat resistance, high strength, corrosion resistance, wear resistance and the like are kept, and the overall strength and compactness of a coating are further improved. The activity of reactants can be improved due to the doping of the rare earth element oxide, and at the same time, the rare earth element oxide is a preferable material for doping and stabilizing a coating structure. Further, based on the characteristics of the coating material, after the coating material is sprayed for the first time, a reasonable heating curve of the silicon steel annealing furnace is established; the coating with a dense structure is formed after spraying and combined with a furnace lining well, so that the furnace lining is effectively protected, and the peeling of the refractory material is prevented.

Description

Technical field [0001] The invention belongs to the technical field of silicon steel annealing furnace production, and specifically relates to an energy-saving high-temperature radiation spray coating for silicon steel annealing furnace, and a preparation method and application thereof. Background technique [0002] In the actual production process of the silicon steel annealing furnace, due to the high temperature of the annealing furnace and the fast production rhythm, the refractory materials in the furnace body continue to age with the passage of time, the temperature of the furnace shell is high, and the refractory materials in the furnace often peel off and fall off. Not only does the energy consumption of the furnace remain high, but the falling refractory often causes embossing defects in the strip steel. [0003] Therefore, it is usually necessary to protect the surface of the lining of the annealing furnace to reduce the direct erosion of the lining by the flame and high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D9/00C04B35/101
CPCC04B35/101C04B2235/3217C04B2235/3224C04B2235/3244C04B2235/3427C04B2235/3826C04B2235/6562C04B2235/6567C04B2235/9607C21D1/26C21D9/00
Inventor 于浩淼汤小超谢宇王磊胡志远孙茂林余威
Owner SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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