Alcohol-based non-zirconium composite refractory aggregate spray paint for wet cast steel and preparation method thereof

A refractory aggregate and non-zirconium technology, which is applied in the field of alcohol-based non-zirconium composite refractory aggregate spraying coating and preparation for wet cast steel, can solve the problem of inability to form a refractory isolation layer, poor anti-sticking effect, and sticking sand or sand inclusion defects and other problems, to achieve excellent suspension stability, less sand sticking defects, and the effect of coating without peeling

Active Publication Date: 2013-09-18
HUBEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the alcohol-based non-zirconium single refractory aggregate coating is used for wet spraying, and the anti-sticking effect is far inferior to that of the alcohol-based zircon powder coating, and it is easy to form sticky sand or sand inclusion defects near the gate of the steel casting.
The reason is that the refractory aggregate is generally a single refractory powder such as corundum, magnesia, mullite, etc. These refractory powders have high s

Method used

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  • Alcohol-based non-zirconium composite refractory aggregate spray paint for wet cast steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Step 1, additive prefabrication:

[0050] 1.1 Mix 2.0 parts by weight of magnesium aluminum silicate superfine powder with 4 parts by weight of water, add 15 parts by weight of grain ethanol and 3 parts by weight of silica sol, put it into a colloid mill and grind for 8 minutes to make paste A;

[0051] 1.2 Dissolve 0.3 parts by weight of polyvinyl butyral in 30 parts by weight of methanol to obtain a transparent solution A, mix the transparent solution A with the paste A evenly, put it into a colloid mill and grind for 8 minutes to make a paste B;

[0052] 1.3 Dissolve 2 parts by weight of modified rosin ester in 6 parts by weight of methanol to obtain a transparent solution B, mix the transparent solution B with 1 part by weight of calcium-based bentonite, put it into a colloid mill and grind for 8 minutes to make a paste C ;

[0053] 1.4 Add paste B, paste C and 5 parts by weight of methanol into a high-speed mixer and stir for 20 minutes to make paste D. The speed...

Embodiment 2

[0058] Step 1, additive prefabrication:

[0059] 1.1 Mix 2.5 parts by weight of magnesium aluminum silicate superfine powder with 5 parts by weight of water, add 20 parts by weight of grain ethanol and 5 parts by weight of silica sol, put it into a colloid mill and grind for 12 minutes to make paste A;

[0060] 1.2 Dissolve 0.5 parts by weight of polyvinyl butyral in 35 parts by weight of methanol to obtain a transparent solution A, mix the transparent solution A with the paste A evenly, put it into a colloid mill and grind for 12 minutes to make a paste B;

[0061] 1.3 Dissolve 3 parts by weight of modified rosin ester in 9 parts by weight of methanol to obtain a transparent solution B, stir the transparent solution B and 1.5 parts by weight of calcium-based bentonite evenly, put it into a colloid mill and grind for 12 minutes to make paste C ;

[0062] 1.4 Add paste B, paste C and 10 parts by weight of methanol into a high-speed mixer and stir for 30 minutes to make paste D...

Embodiment 3

[0067] Step 1, additive prefabrication:

[0068] 1.1 Mix 2.3 parts by weight of magnesium aluminum silicate superfine powder with 4.5 parts by weight of water, add 17 parts by weight of grain ethanol and 4 parts by weight of silica sol, put it into a colloid mill and grind for 10 minutes to make paste A;

[0069] 1.2 Dissolve 0.4 parts by weight of polyvinyl butyral in 32 parts by weight of methanol to obtain a transparent solution A, mix the transparent solution A with the paste A evenly, put it into a colloid mill and grind for 10 minutes to make a paste B;

[0070] 1.3 Dissolve 2.5 parts by weight of modified rosin ester in 7.5 parts by weight of methanol to obtain a transparent solution B, stir the transparent solution B and 1.2 parts by weight of calcium-based bentonite evenly, put it into a colloid mill and grind for 10 minutes to make paste C ;

[0071] 1.4 Add paste B, paste C and 8 parts by weight of methanol into a high-speed mixer and stir for 25 minutes to make pa...

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Abstract

The invention discloses an alcohol-based non-zirconium composite refractory aggregate spray paint for wet cast steel and a preparation method thereof. The spray paint is prepared from the components in parts by weight: 65-70 parts of mullite powder, 30-35 parts of magnesium aluminum spinel powder, 8-10 parts of cordierite flour, 2-5 parts of forsterite powder, 2.0-2.5 parts of magnesium silicate aluminum powder, 1-1.5 parts of calcium bentonite, 4-5 parts of water, 3-5 parts of ludox, 2-3 parts of modified rosin ester, 0.3-0.5 part of butyral resin, 41-54 parts of methyl alcohol, 15-20 parts of grain ethanol, and 10-15 parts of isopropanol. The alcohol-based non-zirconium composite refractory aggregate spray paint disclosed by the invention is low in cost; and the alcohol-based non-zirconium composite refractory aggregate spray paint with high cost can be replaced for spraying green sand.

Description

[0001] technical field [0002] The invention belongs to the technical field of molding materials for casting, and in particular relates to an alcohol-based non-zirconium composite refractory aggregate spray coating for wet cast steel and a preparation method thereof. Background technique [0003] In foundry production, steel castings produced by sand molding process account for more than 90% of the total output of steel castings. The types of sand molds used in the production of steel castings generally include sodium silicate sand, resin sand, clay green sand, etc. In order to prevent steel castings from sticking sand defects, these sand molds need to be coated with casting coatings. At present, the sand mold coatings used in the production of steel castings mainly include alcohol-based zircon powder coatings, corundum powder coatings, quartz powder coatings, and magnesia powder coatings. Among these coatings, the anti-sand sticking effect of steel castings is the alcoh...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 黄晋张友寿夏露李四年宋仲明武永亮鄢卓明
Owner HUBEI UNIV OF TECH
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