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Compound powder additive used for casting coatings and application of compound powder additive

A composite powder and casting coating technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of complex preparation process, high price of coatings, and high cost of materials, so as to achieve simple preparation process and save transportation The effect of cost saving and packaging cost saving

Inactive Publication Date: 2018-01-09
HUBEI ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-cost, simple preparation process, which can be applied to the current water-based casting coating and alcohol-based casting coating. Composite powder additive for water-based paints and alcohol-based paints

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of composite powder additive for casting coating of the present embodiment, the mass fraction of each component is: rectorite 22%, attapulgite 32%, carboxymethyl cellulose 8%, soybean powder 30%, camphorol 4%, iron oxide red 4%, the soybean powder refers to the dry soybean powder after steaming and ripening, drying at 95°C for 12 minutes, crushing to 200 mesh and sieving; when the above components are prepared as powder additives, the proportion After mixing the components evenly, crush them through a 200-mesh sieve.

[0020] According to the application of a composite powder additive for casting coatings in the preparation of water-based coatings in this embodiment, the refractory powder, additives and water are weighed according to the weight ratio of 1:0.08:1, and the internal fire powder and additives are first mixed. Mix evenly, add 2 / 3 of water, stir at 1100r / min for 13min, then add the remaining 1 / 3 of water, and stir at 1100r / min for 8min to prepare the c...

Embodiment 2

[0023] A kind of composite powder additive for casting coating of the present embodiment, the mass fraction of each component is: rectorite 17%, attapulgite 35%, carboxymethyl cellulose 6%, soybean powder 35%, camphorol 2%, iron oxide red 5%, the soybean powder refers to the dry soybean powder after steaming and ripening, drying at 90°C for 15 minutes, crushing to 200 mesh and sieving; when the above components are prepared as powder additives, the proportion After mixing the components evenly, crush them through a 200-mesh sieve.

[0024] According to the application of a composite powder additive for casting coatings in the preparation of water-based coatings in this embodiment, the refractory powder, additives and water are weighed according to the weight ratio of 1:0.08:1, and the internal fire powder and additives are first mixed. Mix evenly, add 2 / 3 of water, stir at 1000r / min for 15min, then add the remaining 1 / 3 of water, and stir at 1000r / min for 10min to prepare the ...

Embodiment 3

[0027] A kind of composite powder additive for casting coating of the present embodiment, the mass fraction of each component is: rectorite 28%, attapulgite 30%, carboxymethyl cellulose 10%, soybean powder 25%, camphorol 5%, iron oxide red 2%, the soybean powder refers to the dry soybean powder after steaming and ripening, drying at 100°C for 10 minutes, crushing to 200 mesh and sieving; when the above components are prepared as powder additives, the proportion After mixing the components evenly, crush them through a 200-mesh sieve.

[0028] The present invention also provides an application of a composite powder additive for casting coatings in the preparation of water-based coatings. According to the weight ratio of 1:0.08:1, refractory powder, additives and water are weighed, and the internal fire powder and Mix the additives evenly, add 2 / 3 of water, stir at 1200r / min for 10min, then add the remaining 1 / 3 of water, and stir at 1200r / min for 5min to prepare the coating, whi...

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PUM

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Abstract

The invention discloses a compound powder additive used for casting coatings. The compound powder additive is prepared from, by weight, 17-28% of rectorite, 30-35% of attapulgite, 6-10% of carboxymethocel, 25-35% of soybean meal, 2-5% of camphor phenol and 2-5% of iron oxide red, wherein the sum of the components is 100%, the soybean meal with the mesh of 200 is obtained by being cooked and curedprior to being smashed and sieved after dried at 90-100DEG C for 10-15 minutes, and the compound powder additive with the mesh of 200 is obtained by evenly mixing the components and smashing and sieving the same. The compound powder additive has good suspension rate, coatings prepared are insensitive to pH values, both water-based coatings and alcoholic-based coatings can reach the ideal suspension effect, and the additive is low in cost, simple in preparation and high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of casting coatings, in particular to a composite powder additive for casting coatings and its application. Background technique [0002] At present, the coatings used in the foundry industry at home and abroad are divided into two categories: alcohol-based coatings and water-based coatings according to the carrier liquid. Alcohol-based coatings mainly use methanol and ethanol as carrier liquids. After being coated on the working surface of the mold (core), the coating is generally dried by ignition; It is prone to blistering of the coating, poor bonding between the coating and the surface of the sand mold (core) or between layers of coatings, and the obtained dry coating is relatively loose, and the coating at the poorly bonded part is easily washed by the molten metal during pouring. It falls off from the surface of the sand mold (core), thereby losing the function of anti-sticking sand. In addition, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 黄建波张婷
Owner HUBEI ENG INST
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