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Heat insulating material for forging large-size forge piece

A technology for thermal insulation materials and large forgings, which is applied in applications, household appliances, and other household appliances, etc. It can solve the problems of binder loss, damage to the physical and mental health of the operator, and the temperature reduction of forgings, so as to achieve the effect of reducing the heat dissipation speed

Active Publication Date: 2012-10-10
CHINA ERZHONG GRP DEYANG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the forming mechanism of these coatings is not compatible with the heat preservation requirements of high-temperature forgings above 1200 ° C, or the binder in them loses its effect at high temperatures, or the coatings cannot form films at high temperatures
Whether it is water-based coating or solvent-based coating, it will absorb a large amount of heat and generate gas after contacting with high-temperature forgings. The water in water-based coatings is equivalent to quenching the forgings, which will cause a decrease in the temperature of the forgings and have an adverse effect on performance; a large amount of organic solvents in solvent-based coatings evaporate. Will pollute the environment and damage the physical and mental health of the operator

Method used

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  • Heat insulating material for forging large-size forge piece
  • Heat insulating material for forging large-size forge piece
  • Heat insulating material for forging large-size forge piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The type and amount of raw materials (in kilograms):

[0034] Vermiculite 10

[0035] Industrial alumina powder 5

[0036] expanded perlite 5

[0037] SiO 2 Micronized 20

[0038] Polystyrene hollow microspheres 0.2

[0039] Diammonium hydrogen phosphate 1.0

[0040] Sodium silicate 10

[0041]Aluminum phosphate 5

[0042] Expanded graphite 0.5

[0043] Aluminum fluorosilicate 0.01

[0044] After the above raw materials are baked and dried, they are weighed according to the proportion, and then placed in a V-shaped mixer in order to mix and disperse evenly to obtain the thermal insulation material for forging large forgings.

Embodiment 2

[0046] The type and amount of raw materials (in kilograms):

[0047] Vermiculite 10

[0048] Industrial alumina powder 8

[0049] expanded perlite 5

[0050] SiO 2 Micronized 25

[0051] Polystyrene hollow microspheres 0.5

[0052] Diammonium hydrogen phosphate 3.0

[0053] Sodium silicate 20

[0054] Aluminum phosphate 5

[0055] Expanded graphite 0.2

[0056] Aluminum fluorosilicate 0.01

[0057] After the above raw materials are baked and dried, they are weighed according to the proportion, and then placed in a V-shaped mixer in order to mix and disperse evenly to obtain the thermal insulation material for forging large forgings.

Embodiment 3

[0059] The type and amount of raw materials (in kilograms):

[0060] Vermiculite 10

[0061] Industrial alumina powder 8

[0062] expanded perlite 5

[0063] SiO 2 Micronized 30

[0064] Polystyrene hollow microspheres 0.3

[0065] Diammonium hydrogen phosphate 3.0

[0066] Sodium silicate 20

[0067] Aluminum phosphate 5

[0068] Expanded graphite 3

[0069] Aluminum fluorosilicate 0.01

[0070] After the above raw materials are baked and dried, they are weighed according to the proportion, and then placed in a V-shaped mixer in order to mix and disperse evenly to obtain the thermal insulation material for forging large forgings.

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Abstract

The invention belongs to the technical field of heat insulating materials, in particular to a heat insulating material for forging a large-size forging piece. The invention aims to provide a heat insulating material capable of meeting the heat-insulating requirement of the 1,200 DEG C above high-temperature large-size forging piece. The heat-insulating material comprises 40-75 parts of heat-insulating filler, 15-45 parts of high-temperature caking agent, 1.0-5 parts of high-temperature crosslinking agent, 0.3-10 parts of foaming agent and 0.01-1.5 parts of addition agent. The heat-insulating agent does not contain any liquid component and generate any volatilizing gas in the heat-insulting forming process, is sprayed to parts of the forging piece needed to be insulated by an air spraying,high-pressure air-free spraying or static spraying device and can form a high-temperature heat-insulating layer with the heat-conducting coefficient less than 0.1W / m*K on the surface of the forging piece.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, in particular to thermal insulation materials for forging large forgings. Background technique [0002] With the development and progress of science and technology, the number of large and extra-large forgings that need to be forged in the equipment manufacturing industry is increasing. The successful forging of these forgings is not only related to the product progress of the enterprise, but also has a great impact on the national economy and national security. influences. Such as high chromium backup rolls of super large rolling mills, main pipes of nuclear power reactors, ultra-supercritical rotors, etc. Since the tonnage of these forgings can reach hundreds of tons, it can reach up to 650 tons, and the length can reach more than 20 meters. To ensure the successful manufacture of these forgings, it is necessary to solve many technical problems, among which the heat prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B12/02C04B12/04
CPCC04B2111/28C04B2111/00482C04B2201/32C04B28/344Y02W30/91C04B12/04C04B14/106C04B14/185C04B14/202C04B14/303C04B16/0666C04B18/146C04B18/26C04B20/002C04B22/0013C04B22/085C04B22/103C04B22/124C04B22/126C04B22/16C04B24/126C04B24/128C04B24/38C04B38/0006C04B38/02C04B14/024
Inventor 白敏陈晓慈李丹任春媚
Owner CHINA ERZHONG GRP DEYANG HEAVY IND
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