Disappeared mould and water-based paint composite powder additive used for sand casting

A technology of sand casting and water-based coatings, which is applied to casting molding equipment, coatings, casting molds, etc. It can solve the problems of human body and environmental hazards, cumbersome preparation process, and high price, and achieve transportation cost savings, good benefits, and low prices. low effect

Inactive Publication Date: 2007-07-25
刘玉满
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  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the preparation process of water-based coatings in the foundry industry at home and abroad is quite cumbersome: refractory powder + binder + wetting agent + defoamer + preservatives such as formaldehyde solution + water → after mixing and stirring for 24 hours → re-stirring or It can be used after rolling for more than 5 hours, and the price is about 20,000 yuan per ton. Almost all commercial water-based coatings in the foundry industry at home and abroad use highly toxic materials such as phenol or formaldehyde as preservatives, which are extremely harmful to humans and the environment. Large; the suspension of domestic and foreign advanced casting water-based coating slurry is about 95%, it will settle after 8 hours, and it will ferment and produce bubbles in a few days, so it cannot be used
In addition, there is no one-time sand mixing operation in place in the international foundry industry, that is, there is no need to add any other materials except refractory base material and carrier water, and there is no water-based coating powder composite additive suitable for all refractory base materials. It is a powdery composite additive suitable for castings of all corresponding materials, both for all sand molds and for lost foam casting

Method used

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  • Disappeared mould and water-based paint composite powder additive used for sand casting

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Embodiment Construction

[0022] The raw materials in the formula of the present invention, except the ripened fern potato powder, all other raw materials belong to commercialized purchased powder materials.

[0023] To produce 1000kg of the lost foam and sand casting water-based coating additives, weigh 250kg of fern potato powder made from fern root plant tubers or potato pieces, which are cooked, dried and crushed through a 120-mesh sieve below 100°C, Carboxymethylcellulose sodium 120kg, calcium-based bentonite 320kg, sodium carbonate 60kg, magnesium sulfate 80kg, sodium chloride 60kg, medical disinfectant powder 60kg, cryolite powder 50kg, mix evenly, crush through a 120-mesh sieve, and pack in separate bags. .

[0024] When using, mix 100 parts by weight of refractory base powder with 10 parts by weight of this powder, add 120 parts by weight of water, stir for 10 minutes, and then it can be used. You can also adjust the required concentration by adding water, and then stir for 5 minutes. Use or ...

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Abstract

A composite powdered additive for the water-base paint used for investment mould and casting sand mould is prepared from filix root starch, carboxymethyl cellulose sodium, Ca-based benton, sodium carbonate, magnesium sulfate, sodium chloride, and medical disinfecting powder through proportional mixing and pulverizing.

Description

Technical field: [0001] The invention relates to casting paint additives, in particular to lost foam and sand casting water-based paint composite powder additives. Background technique: [0002] At present, the preparation process of water-based coatings in the foundry industry at home and abroad is quite cumbersome: refractory powder + binder + wetting agent + defoamer + preservatives such as formaldehyde solution + water → after mixing and stirring for 24 hours → re-stirring or It can be used after rolling for more than 5 hours, and the price is about 20,000 yuan per ton. Almost all commercial water-based coatings in the foundry industry at home and abroad use highly toxic materials such as phenol or formaldehyde as preservatives, which are extremely harmful to humans and the environment. Large; domestic and foreign advanced casting water-based coating slurry has a suspension of about 95%, and it will settle for 8 hours, and it will ferment for a few days to produce air bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 刘玉满刘翔
Owner 刘玉满
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