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Coating for casting of ductile iron wheel hub of wind turbine and preparation method and application

A technology for wind turbines and coatings, applied in casting molding equipment, coatings, molds, etc., can solve the problems of poor anti-sulfurization effect, and achieve the effects of good anti-sulfur, high tensile strength and high elongation.

Active Publication Date: 2020-08-18
四川东树新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Aiming at the problem of poor anti-sulfurization effect of the coatings used in the current production of casting coatings for ductile iron hubs of wind power generators, the present invention proposes a casting coating

Method used

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  • Coating for casting of ductile iron wheel hub of wind turbine and preparation method and application
  • Coating for casting of ductile iron wheel hub of wind turbine and preparation method and application
  • Coating for casting of ductile iron wheel hub of wind turbine and preparation method and application

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Experimental program
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preparation example Construction

[0055] The preparation method of the coating for the casting of the ductile iron hub of the wind power generator is carried out according to the following steps:

[0056] a, mixing the carrier liquid, binder and suspending agent to obtain a mixed solution;

[0057] b. Add refractory aggregate A or refractory aggregate B into the mixture, and mix well to obtain sand core coating or sand mold coating.

[0058] Preferably, in step b, the obtained coating has a Baume degree of 110-120°Bé.

[0059] The concrete preparation method of coating of the present invention is preferably:

[0060] 1) Add the carrier liquid, binder, and suspending agent into the stirring container, adjust the speed of the dispersion disc to 1500r / min, and stir and disperse for 30-50 minutes;

[0061] 2) Add the refractory aggregate into the mixing container, adjust the speed of the dispersion disc to 1500r / min, and stir and disperse for 50-80 minutes;

[0062] 3) After stirring and dispersing, use the car...

Embodiment 1

[0068] Prepare sand core coatings X1-X5, see Table 1 for the specific components of each group; prepare sand mold coatings XG1-XG5, see Table 2 for specific components; the parts stated in the table are parts by weight.

[0069] Preparation method:

[0070] 1) Add the carrier liquid, binder and suspending agent into the stirring container, adjust the speed of the dispersion disc to 1500r / min, and stir and disperse for 40 minutes;

[0071] 2) Put the refractory aggregate into the mixing container, adjust the rotating speed of the dispersing disc to 1500r / min, stir and disperse for 65 minutes, and obtain the sand core coating or sand mold coating.

[0072] Table 1

[0073]

[0074]

[0075] Table 2

[0076]

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Abstract

The invention relates to a coating for casting of a wind power generator ductile iron hub and a preparation method and application thereof and belongs to the field of casting coating preparation. Thecoating for casting of the wind power generator ductile iron hub comprises a sand core coating and a sand mold coating located in two independent units. The coating comprises, by weight, 20-50 parts of carrier liquid, 2-5 parts of binding agent, 4-7 parts of suspending agent and 50-70 parts of refractory aggregate. The refractory aggregate of the sand core coating comprises quartz powder, pyrophyllite, mica powder, mullite and red iron oxide in the weight ratio of 10-13 to 9-12 to 1-4 to 3-8 to 0.5-2. The refractory aggregate of the sand mold coating comprises amorphous graphite, flake graphite, bauxite and zircon powder in the weight ratio of 3-7 to 0.5-3 to 3-7 to 1-2. The coating provided by the invention has the good sulfur prevention and sulfur adsorption effects and can effectively prevent nodularization degeneration of nodular cast iron.

Description

technical field [0001] The invention relates to a coating for casting a ductile iron hub of a wind power generator and a preparation method thereof, and belongs to the field of casting coating preparation. Background technique [0002] Foundry coatings generally consist of refractory materials, carrier fluids, binders, suspending agents and other additives. It is widely used in various molds and cores in foundry production. It has the functions of preventing sand sticking of castings, reducing the surface roughness of castings, increasing the service life of sand molds, and improving the surface material of castings. [0003] Foundry coatings can be classified in a number of ways. According to the degree of fire resistance, it can be divided into high refractoriness coatings, medium refractoriness coatings and low refractoriness coatings; according to the carrier liquid used, it can be divided into water-based coatings and alcohol-based coatings; according to the casting m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00B22C23/02
CPCB22C3/00B22C23/02
Inventor 张林
Owner 四川东树新材料有限公司