A kind of tundish multifunctional liner and its preparation method and application

A tundish and multi-functional technology, applied in the direction of manufacturing tools, casting equipment, metal processing equipment, etc., can solve the problems of sintering and adhesion between the working layer and the permanent layer, and achieve easy turning and peeling, good thermal insulation function, and less smoke Effect

Active Publication Date: 2022-03-25
ZHEJIANG ZILI HIGH TEMPERATURE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a tundish multifunctional lining, which is an organic coating film using carbon black as the main raw material, and the carbon black is uniformly dispersed in the aqueous solution or organic solvent of the organic film-forming substance under the action of auxiliary agents such as dispersant and curing agent Formed by thermal curing in the dispersion medium, it is used to solve the technical problem of sintering and adhesion between the working layer and the permanent layer in the prior art, and at the same time has the functions of heat insulation, reducing the water consumption of the coating and preventing the tundish from dripping

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  • A kind of tundish multifunctional liner and its preparation method and application

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preparation example Construction

[0043] The preparation method of the multifunctional lining of the tundish of the following embodiments comprises the following steps:

[0044] (1) Preparation of film-forming substance solution: According to the technical requirements for the use of film-forming substances, first prepare a film-forming substance solution of a specified concentration, measure the film-forming substance, water and / or organic solvent according to the proportion, disperse, dissolve, and set aside.

[0045] (2) Preparation of multi-functional lining paint: the preparation of paint can be made by general water-based polyester paint. According to the design ratio, weigh carbon black, film-forming substance solution and additives, first add the film-forming substance solution into the mixer, start the agitator, and add carbon black and various additives into the film-forming substance solution one by one according to the order of feeding , full and high-speed stirring, and finally add water to adjust...

Embodiment 1

[0049] A tundish multifunctional lining coating, the mass parts of raw materials are: carbon black 19-45 parts, 3wt% polyvinyl alcohol aqueous solution 50-70 parts, tributyl phosphate is 0.1% of the total mass of carbon black and polyvinyl alcohol aqueous solution ~0.4%. Glycerin and polyethylene glycol are added in 10% to 15% of the mass of the polyvinyl alcohol aqueous solution in a compounding ratio of 4:1. Amino alcohol alkali-free solution organic decoagulant, Sima chemical PEPTAPON71S suspension stabilizer for glaze, Sima chemical GLYDOL N2002 carbon material wetting agent are respectively 0.1%~0.5%, 0.3%~0.6%, 0.5%~ of carbon black mass 1%. The amount of carbon black and polyvinyl alcohol varies slightly according to the construction method. The amount of carbon black can be increased appropriately for hand coating, while the fluidity of the slurry must be taken into account when spraying.

[0050] According to the above design ratio, weigh carbon black, film-forming ...

Embodiment 2

[0055] A tundish multifunctional lining coating, the mass parts of raw materials are: 30-50 parts of carbon black, 40-70 parts of styrene-acrylic emulsion (solid content 40wt%-50wt%), 0.2-0.5 parts of tributyl phosphate defoamer , 0.4-0.8 parts of alcohol ester twelve film-forming aids, 10-30 parts of water. The decondenser amino alcohol solution and the wetting agent Sima Chemical GLYDOL N2002 carbon material are respectively 0.1% to 0.5% and 0.5% to 1% of the carbon black mass.

[0056] First, add decoagulant and wetting agent to water, add carbon black for pre-dispersion, and stir at high speed to obtain slurry. Then, under low-speed stirring, slowly add styrene-acrylic emulsion to the slurry, keep stirring, and then add film-forming aids, defoamers, etc. to prepare a coating.

[0057] The performance index of slurry is: bulk density (25°C) 1.1~1.4g / cm 3 , Solid content 30wt% ~ 50wt%.

[0058] The slurry has a high viscosity and is suitable for hand-painted construction,...

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Abstract

The invention discloses a multifunctional liner for a tundish, a preparation method thereof and an application in a tundish. The multifunctional lining of the tundish, in terms of mass percentage, consists of raw materials: 15% to 50% of carbon black, 1.5% to 65% of film-forming substances, 7% to 70% of water and / or organic solvents, and 0.2% of additives ~15%; the tundish multifunctional lining is located between the permanent layer and the working layer of the tundish. The preparation method comprises steps: (1) dispersing and dissolving the film-forming substance in water and / or an organic solvent to obtain a film-forming substance solution; (2) adding carbon black and additives to the film-forming substance under stirring (3) The multifunctional lining coating is applied on the permanent layer of the tundish by hand coating and / or spraying, and formed into a film and baked to form the multifunctional lining of the tundish.

Description

technical field [0001] The invention relates to the field of iron and steel metallurgical equipment, in particular to a multifunctional lining for a tundish and a preparation method and application thereof. Background technique [0002] The tundish is mainly used as a container and distributor of molten steel in the continuous casting process, but with the development of clean steel technology, the metallurgical function of the tundish has been paid attention to and in-depth research has been carried out, and a number of tundish metallurgical technologies have been implemented Apply and scale quickly. For example, tundish purification function (dam wall slag retention, argon blowing and filtering impurity removal, flow field optimization, etc.), temperature adjustment function (liner insulation, powder spraying temperature adjustment, continuous temperature measurement, induction heating and plasma heating, etc.), refining Functions (alkaline coating, alkaline covering agen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D129/04C09D125/14C09D7/61C09D7/63B22D41/02
CPCC09D129/04C09D125/14C09D7/61C09D7/63B22D41/02C08K2201/011C08K3/04C08K5/521
Inventor 杨时标云海王玉龙刘光平成琰尹明强
Owner ZHEJIANG ZILI HIGH TEMPERATURE TECH CO LTD
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