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Powdery casting coating as well as preparation method and use method thereof

A casting coating and powdery technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of separation of alcohol, aggregate and additives, poor solubility of additives and alcohol, and difficulty in obtaining qualified coatings. Achieve good suspension stability, excellent adhesion, and avoid accidents such as fire or explosion

Inactive Publication Date: 2016-09-14
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the powdery coating is prepared without the participation of alcohol, the coating needs to be miscible with alcohol when it is used. However, at this time, the solubility of the additives and alcohol is poor, and it cannot be completely dissolved, and it is easy to have a gap between alcohol, aggregate and additives. Separated from each other, floating on the surface of alcohol, it is difficult to obtain qualified paint

Method used

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  • Powdery casting coating as well as preparation method and use method thereof
  • Powdery casting coating as well as preparation method and use method thereof

Examples

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Effect test

Embodiment 1

[0029] The powder casting coating of the present embodiment is composed of the following components by weight percentage: 91% of refractory aggregate, 2.7% of sodium bentonite, 0.9% of rosin, 0.72% of polyvinyl butyral, and 0.18% of hydroxypropyl methylcellulose %, water 4.5%. Among them, the particle size of the refractory material is selected as 325 mesh; the viscosity of hydroxypropyl methylcellulose is selected as 10mpa.s; the particle size of polyvinyl butyral is selected as 800 mesh, and the viscosity is 20mpa.s; the rosin is selected as maleic rosin , the particle size is 400 mesh; the particle size of sodium bentonite is selected as 600 mesh.

[0030] Preparation Process:

[0031] (1) Prepare 91 kilograms of refractory aggregate: weigh 30 kilograms of zircon powder, 21 kilograms of corundum powder, and 40 kilograms of bauxite, and mix them for later use;

[0032] (2) Take by weighing 2.7 kilograms of sodium bentonite, 0.9 kilograms of rosin, 0.72 kilograms of polyvin...

Embodiment 2

[0042] The powder casting coating of this embodiment is composed of the following components by weight percentage: 90% of refractory aggregate, 3.6% of sodium bentonite, 1.3% of rosin, 0.75% of polyvinyl butyral, 0.15% of hydroxypropyl methylcellulose %, water 4.2%. Among them, the particle size of the refractory material is selected as 325 mesh; the viscosity of hydroxypropyl methylcellulose is selected as 15mpa.s; the particle size of polyvinyl butyral is selected as 700 mesh, and the viscosity is 5mpa.s; the rosin is selected as maleic rosin , the particle size is 500 mesh; the particle size of sodium bentonite is selected as 700 mesh.

[0043] Preparation Process:

[0044] (1) Prepare 90 kg of refractory aggregate: weigh 30 kg of zircon powder, 20 kg of mullite powder, 20 kg of corundum powder, and 20 kg of bauxite, and mix them for later use;

[0045] (2) Take by weighing 3.6 kilograms of sodium bentonite, 1.3 kilograms of rosin, 0.75 kilograms of polyvinyl butyral, and...

Embodiment 3

[0055] The powder casting coating of this embodiment is composed of the following components by weight percentage: 89% of refractory aggregate, 3.6% of sodium bentonite, 1.3% of rosin, 0.75% of polyvinyl butyral, 0.25% of hydroxypropyl methylcellulose %, water 5.1%. Among them, the particle size of the refractory material is selected as 325 mesh; the viscosity of hydroxypropyl methylcellulose is selected as 5mpa.s; the particle size of polyvinyl butyral is selected as 600 mesh, and the viscosity is 3mpa.s; the rosin is selected as maleic rosin , the particle size is 500 mesh; the sodium bentonite particle size is selected as 800 mesh.

[0056] Preparation Process:

[0057] (1) Prepare 89 kilograms of refractory aggregate: take 89 kilograms of bauxite for subsequent use;

[0058] (2) Take by weighing 3.6 kilograms of sodium bentonite, 1.3 kilograms of rosin, 0.75 kilograms of polyvinyl butyral, and 0.25 kilograms of hydroxypropyl methylcellulose;

[0059] (3) Mix the powders...

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Abstract

The invention provides a powdery casting coating as well as a preparation method and a use method thereof. The powdery casting coating provided by the invention is composed of the following components in percentage by weight: 89-92% of refractory aggregates, 2.6-3.6% of sodium bentonite, 0.64-1.3% of rosin, 0.58-0.75% of polyvinyl butyral, 0.15-0.25% of hydroxypropyl methyl cellulose, and 4.0-5.1% of water. The powdery casting coating provided by the invention is alcohol-free, and capable of being mutually infiltrated and fused with alcohol in use to obtain a qualified coating.

Description

technical field [0001] The invention relates to the field of sand casting coatings, in particular to a powder casting coating and its preparation method and application method. Background technique [0002] As a quick-drying coating, alcohol-based casting coatings have been widely used in foundry companies. Coatings are produced by specialized enterprises. In order to obtain better alcohol-based casting coatings, it is necessary to achieve good mutual solubility of various alcohol-based coating additives, and organically combine with refractory aggregates to obtain good suspension stability, good brushing feeling, and the coating does not wear when used. Blistering, non-peeling, high-strength alcohol-based casting coatings, and alcohol-based coating additives can be better dissolved under the action of alcohol. Therefore, most of the existing alcohol-based casting coatings need to use a large amount of Alcohol. [0003] However, alcohol is a volatile substance, which not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 张友寿夏露黄晋晏骏玮李四年
Owner HUBEI UNIV OF TECH
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