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Inorganic heat-insulating coating for cooling iron and steel materials and its application method

A heat-insulating coating and steel material technology, applied in coatings, applications, household appliances, etc., can solve the problems of low maximum service temperature, easy peeling off of the coating, weak physical properties, etc., and achieve good service life and good insulation Thermal effect, effect of low thermal conductivity

Active Publication Date: 2022-06-07
陕西高精尖新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an inorganic heat-insulating coating for cooling iron and steel materials and its application method to solve the problem that the performance of high-temperature-resistant coatings in the prior art cannot meet the required standards, and the protective effect of the produced coating on iron and steel materials is not obvious. The temperature is low, the physical properties are not strong, and the coating is easy to fall off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An inorganic heat-insulating coating for cooling steel materials, which is formed by curing the inorganic heat-insulating paint, wherein the specific preparation process of the inorganic heat-insulating paint is as follows:

[0034] Weigh out 600 g of peraluminate cement, 200 g of fly ash, 60 g of slag powder, 90 g of silica fume powder, 300 g of aluminum dihydrogen phosphate, 300 g of aluminum hydroxide, 300 g of rare earth tantalate hollow spherical powder, and 200 g of silica aerogel , 200 g of expanded perlite powder, 80 g of magnesium oxide, 80 g of calcium oxide and 80 g of sodium fluorosilicate, which are placed in a mixer and stirred to obtain powder.

[0035] 1.2 kg of water glass solution, 4 g of inorganic fiber basalt and 40 g of cellulose were added to the mixer, and the mixture was continued to stir until it became a viscous slurry to obtain an inorganic thermal insulation coating. The components of the basalt fiber in this embodiment mainly include oxides ...

Embodiment 2

[0041] The difference from Example 1 is that the proportions of the components are different. Weigh out 500g of peraluminate cement, 100g of fly ash, 50g of slag powder, 60g of silica fume powder, 200g of aluminum dihydrogen phosphate, 200g of aluminum hydroxide, 200g of tantalate hollow spherical powder, 100g of silica aerogel, 100g of expanded perlite powder, 60g of magnesium oxide, 60g of calcium oxide, and 60g of sodium fluorosilicate are placed in a mixer and dry mixed to obtain powder.

[0042] Add 1 kg of water glass solution, 30 g of inorganic fiber basalt, and 30 g of cellulose into the mixer, and continue to stir until it becomes a viscous slurry to obtain an inorganic thermal insulation coating.

[0043] How to use the above inorganic coatings:

[0044] The steel plate is surface treated with acetone and sandpaper and then shot blasted. After welding a certain length of rivets on the steel plate, the paint is applied to the steel plate with a thickness of 20mm, and ...

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Abstract

The invention relates to the technical field of heat-insulating coatings, and specifically discloses an inorganic heat-insulating coating for cooling iron and steel materials and a method for using the same. It is formed by curing an inorganic heat-insulating coating. The raw materials of the inorganic heat-insulating coating include powder, Water glass solution, basalt fiber, cellulose and defoamer, the powder includes high aluminate cement, fly ash, slag powder, silica fume powder, aluminum dihydrogen phosphate, aluminum hydroxide, rare earth tantalate, Silica airgel, expanded perlite powder, magnesium oxide, calcium oxide and sodium fluorosilicate. When using the thermal insulation coating in this patent, the assessment temperature is 1000-1100°C, the backside temperature is 200-400°C, the assessment time is 300h, and it can be used for a long time. The heat insulation gradient is 600-800°C, and the coating strength is 20 -30MPa.

Description

technical field [0001] The invention relates to the technical field of thermal insulation coatings, in particular to an inorganic thermal insulation coating for cooling steel materials and a method for using the same. Background technique [0002] The energy consumption of iron and steel production accounts for about 10% of the national total energy consumption. Insulation materials are an important component of iron and steel production equipment and have a great impact on the energy consumption of equipment. At present, the main insulation materials used in the iron and steel industry are insulation bricks, Ceramic fiber, calcium silicate and other products, the thermal insulation effect of these materials is acceptable at low temperature, but with the increase of the use temperature, the thermal conductivity will also increase sharply, and the thermal insulation performance will decrease rapidly. [0003] The operating temperature of iron and steel industry equipment is u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B38/08B05D5/00B05D7/14B05D7/24
CPCC04B28/344B05D5/00B05D7/14B05D7/24C04B2111/00508C04B2111/00525B05D2202/10C04B12/04C04B7/32C04B18/08C04B18/141C04B18/146C04B14/303C04B14/064C04B14/36C04B14/185C04B22/066C04B22/064C04B22/126C04B14/4656C04B24/383Y02W30/91
Inventor 冯晶汪俊利建雨张益欣张陆洋李振军王峰
Owner 陕西高精尖新材料科技有限责任公司
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