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Special sand mold coating material produced from alumina powder as main raw material

A technology of alumina powder and main raw materials, which is applied in the field of special coatings for sand molds, can solve problems such as cost reduction, and achieve the effects of reducing use costs, good social and economic benefits, and reasonable formula

Inactive Publication Date: 2018-11-30
郑州远东耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a special coating for sand molds produced with alumina powder as the main raw material, which can effectively solve the problem of reducing the cost of producing coatings with alumina powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The special paint for sand molds in this embodiment includes the following raw materials by weight: 5.3kg of water, 10.75kg of aluminum oxide powder, 6g of xanthan gum, and 38g of polyethylene.

[0016] The preparation method of the special coating for sand mold of the present embodiment comprises the following steps:

[0017] (1) Pour 4.5kg of water into the mixer, and add 250g of alumina powder and 6g of xanthan gum, and stir until evenly mixed;

[0018] (2) Add the remaining alumina powder into the mixture prepared in step (1), and stir until uniform;

[0019] (3) Pour 0.8kg of water into the pot, add 38g of polyethylene, put it on the fire, and boil until the polyethylene is completely melted;

[0020] (4) Pour the polyethylene solution in step (3) into the mixture prepared in step (2) while it is hot, and stir evenly to obtain the product.

[0021] The Baume degree of the special coating for sand mold is 79.

Embodiment 2

[0023] The special coating for sand mold of this embodiment comprises the raw materials of following weight: water 6kg, aluminum oxide powder 12.75kg, xanthan gum 8g, polyethylene 40g;

[0024] The preparation method of the special coating for sand mold of the present embodiment comprises the following steps:

[0025] (1) Pour 5kg of water into the mixer, and add 250g of alumina powder and 8g of xanthan gum, and stir until evenly mixed;

[0026] (2) Add the remaining alumina powder into the mixture prepared in step (1), and stir until uniform;

[0027] (3) Pour 1kg of water into the pot, add 40g of polyethylene, put it on the fire, and boil until the polyethylene is completely melted;

[0028] (4) Pour the polyethylene solution in step (3) into the mixture prepared in step (2) while it is hot, and stir evenly to obtain the product.

[0029] The Baume degree of the prepared special coating for sand mold is 80.5.

Embodiment 3

[0031] The special paint for sand molds in this embodiment includes the following raw materials by weight: 6.7kg of water, 14.75kg of aluminum oxide powder, 10g of xanthan gum, and 42g of polyethylene.

[0032] The preparation method of the special coating for sand mold of the present embodiment comprises the following steps:

[0033] (1) Pour 5.5kg of water into the mixer, and add 250g of alumina powder and 10g of xanthan gum, and stir until evenly mixed;

[0034] (2) Add the remaining alumina powder into the mixture prepared in step (1), and stir until uniform;

[0035] (3) Pour 1.2kg of water into the pot, add 42g of polyethylene, put it on the fire, and boil until the polyethylene is completely melted;

[0036] (4) Pour the polyethylene solution in step (3) into the mixture prepared in step (2) while it is hot, and stir evenly to obtain the product.

[0037] The Baume degree of the prepared special coating for sand mold is 82.

[0038] From the above situation, it can b...

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Abstract

The invention relates to a special sand mold coating material produced from alumina powder as a main raw material. The technical scheme is as follows: the special sand mold coating material comprisesthe following raw materials by weight: 5.3kg to 6.7kg of water, 10.75kg to 14.75kg of alumina powder, 6g to 10g of xanthan gum and 38g to 42g of polyethylene. According to the special sand mold coating material, the production cost of an electrically-fused brick sand mold coating material is greatly reduced, and the coating material cost of electrically-fused bricks per ton can be saved by about 200 RMB; the alumina powder has refractoriness capable of reaching 2,010 DEG C to 2,050 DEG C, and thus, the requirements of high-temperature resistant coating materials of electrically-fused brick sand molds on high-temperature resistance can be met; the market price of the alumina powder per ton is 3,200 RMB, and the use cost of the coating material can be greatly reduced as the electrically-fused brick sand mold coating material; and by using the alumina powder as the sand mold coating material, the fitness is higher, a layer of crust is formed after the coating material is sintered, thus, gas generated from resin combustion is prevented from polluting brick faces, crusts formed by the coating material at high temperatures will successfully and naturally fall off during brick discharging, the brick faces are more convenient in cleaning, and the efficiency of cleaning of the brick faces is increased.

Description

technical field [0001] The invention relates to a coating for zirconium corundum electric fused bricks, in particular to a special coating for sand molds produced with alumina powder as the main raw material. Background technique [0002] In order to produce higher quality electric fused bricks, the sand molds produced by electric fused bricks have been upgraded to resin sand sand molds. The resin sand sand molds will produce carbon dioxide gas and other gases under high temperature during the casting process. These gases will make The brick surface is blue in color and has many pores on the brick surface. In order to avoid these shortcomings, the inner core of the sand mold needs to be painted with high-temperature resistant paint, and the coating is used to isolate the gas from harming the surface of the fused brick. The high-temperature paint used in the fused brick sand mold It is a water-based paint made of zirconium main material and other additives without auxiliary m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3217
Inventor 龙沾卫
Owner 郑州远东耐火材料有限公司
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