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Preparation method of water based flow coating for 3D printing sand mold

A 3D printing, sand molding technology, applied in casting molding equipment, coating, mold and other directions, to achieve the effect of no accumulation, superior fluidity, and low sintering temperature

Active Publication Date: 2016-06-15
NINGXIA KOCEL MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, traditional casting coatings have no solution to the above problems.

Method used

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  • Preparation method of water based flow coating for 3D printing sand mold
  • Preparation method of water based flow coating for 3D printing sand mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The production raw materials of a 3D printing sand mold water-based flow coating coating are: zircon powder refractory aggregate 70%, sodium bentonite 3%, sepiolite powder 1%, polyvinyl alcohol 0.5%, phosphate 0.2%, sulfonated amber Dioctyl acid sodium salt 0.1%, DY-preservative 0.2%, fluorite 0.3%, iron oxide red 1.0%, KST-202 defoamer 0.2%, water 23.5%.

[0036] A production process for 3D printing sand mold water-based flow coating, comprising the following steps:

[0037] a. Pretreatment of sodium bentonite and sepiolite powder: Mix 3% bentonite and 1% sepiolite with water at a ratio of 1:1 under stirring, completely disperse evenly, and let stand for 12-24 hours to obtain a pretreatment composite suspension slurry;

[0038] b. Pretreatment of polyvinyl alcohol: weigh 4 times the mass of polyvinyl alcohol in a bucket, slowly add 0.5% polyvinyl alcohol under stirring conditions, and then fully stir until it is completely dissolved, and filter it with a screen (to b...

Embodiment 2

[0043] The production raw materials of a 3D printing sand mold water-based flow coating coating are: zircon powder refractory aggregate 40.0%, andalusite powder refractory aggregate 25.0%, sodium bentonite 2.5%, sepiolite powder 1.0%, polyvinyl alcohol 0.6% , silica sol 0.2%, dioctyl sulfosuccinate sodium salt 0.2%, DY-preservative 0.2%, fluorite 0.7%, iron oxide red 1.4%, KST-202 defoamer 0.2%, water 28%.

[0044] A production process for 3D printing sand mold water-based flow coating, comprising the following steps:

[0045] a. Pretreatment of sodium bentonite and sepiolite powder: Mix 2.5% bentonite and 1% sepiolite with water at a ratio of 1:1 under stirring, completely disperse evenly, and let stand for 12-24 hours to obtain a pretreatment composite suspension slurry;

[0046] b. Pretreatment of polyvinyl alcohol: weigh 4 times the mass of polyvinyl alcohol in a bucket, slowly add 0.6% polyvinyl alcohol under stirring conditions, and then fully stir until it is complete...

Embodiment 3

[0051] The production raw materials of a 3D printing sand mold water-based flow coating coating are: white corundum refractory aggregate 40.0%, high alumina fine powder refractory aggregate 25.0%, sodium bentonite 2.5%, sepiolite powder 1.0%, polyvinyl alcohol 0.6% , phosphate 0.2%, dioctyl sulfosuccinate sodium salt 0.2%, DY-preservative 0.2%, fluorite 0.7%, iron oxide red 1.4%, KST-202 defoamer 0.2%, water 28%.

[0052] A production process for 3D printing sand mold water-based flow coating, comprising the following steps:

[0053] a. Pretreatment of sodium bentonite and sepiolite powder: Mix 2.5% bentonite and 1.0% sepiolite with water at a ratio of 1:1 under stirring, completely disperse evenly, and let stand for 12-24 hours to obtain a pretreatment composite suspension slurry;

[0054] b. Pretreatment of polyvinyl alcohol: weigh 4 times the mass of polyvinyl alcohol in a bucket, slowly add 0.6% polyvinyl alcohol under stirring conditions, and then fully stir until it is...

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Abstract

The invention relates to the technical field of 3D printing sand mold casting and in particular to a water based flow coating for a 3D printing sand mold and a preparation method of the water based flow coating. The water based flow coating is prepared from zircon powder, white corundum, high-aluminum fine powder, ferrochrome mineral powder, pyrophyllite powder, sillimanite powder, cyanite powder, andalusite powder, spodumene powder, sodium bentonite, sea-foam stone powder, polyvinyl alcohol, polyvinyl acetate emulsion, phosphate, silica sol, sulfonated dioctyl succinate sodium salt, preservative, a defoaming agent, fluorite, iron oxide red and water. The water based flow coating for the 3D printing sand mold has the advantages of excellent mobility, appropriate permeability, good leveling property, high-efficiency suspension stability, appropriate coating thickness, super strong anti-burn-on property, environment protection, no pollution and high efficiency.

Description

technical field [0001] The invention relates to the technical field of 3D printing sand mold casting, in particular to a water-based flow coating for 3D printing sand molds and a preparation method thereof. Background technique [0002] With the advancement of technology and changes in production and lifestyle, the foundry industry must also consider sustainable development. The future development of casting will show the characteristics of "variety of varieties, complex structure, and fast replacement" from the product demand. From the casting production, it requires high quality, reliability, high efficiency, intelligence, green and low carbon, and from the quality and production of casting products. The requirements for efficiency are getting higher and higher. The application of 3D printing technology to the design of the casting process realizes the integration of design, analysis and manufacturing processes, which greatly improves the efficiency of the research and dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 李天才
Owner NINGXIA KOCEL MOLD
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