3D printing sand mold water-based dip coating and preparation method thereof

A 3D printing and sand molding technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of unstable coating quality, high price, and large overall quality gap, and achieve improved hygiene and safety, long shelf life, and prevention of spoilage effect

Inactive Publication Date: 2018-12-11
贵阳灵峰铸造材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the water-based dipping coatings used in production are all imported or produced by joint venture manufacturers. The various performance indicators of the coatings are high. After application, the effect is good and there are no defects, but the price is expensive.
There are also relatively good domestic coatings, but the quality of the coatings is not stable, and the overall quality is far behind that of foreign coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A water-based dip-coating coating for 3D printing sand molds, which is composed of 60% composite refractory aggregate, 4.5% composite suspending agent, 1% composite binder, 0.3% penetrating agent, 0.4% leveling agent, DL -T201 preservative 0.1%, flux 4%, defoamer 0.2%, water 29.5% mixed configuration. The composite refractory aggregate is composed of two or more of zircon powder, spodumene powder, silicon carbide powder, magnesium aluminum spinel powder, magnesium chromium spinel powder, and aluminum chromium spinel powder according to 7:1 or 7: Prepared by mixing the amount of 1:0.5. Among them, the composite suspending agent is prepared by mixing sodium bentonite, attapulgite and polyacrylamide in a ratio of 1:1. The composite binder is prepared by mixing polyvinyl alcohol and α-starch. The penetrant is dioctyl sulfosuccinate sodium salt. The leveling agent is a fluorine-modified hydroxyl-containing acrylic resin. The co-solvent is made of fluorite and iron oxide ...

Embodiment 2

[0030]A water-based dip-coating coating for 3D printing sand molds, which is composed of 55% composite refractory aggregate, 5% composite suspending agent, 0.8% composite binder, 0.1% penetrating agent, 0.2% leveling agent, DL -T201 preservative 0.05%, flux 2%, defoamer 0.15%, water 36.7% mixed configuration. The composite refractory aggregate is composed of two or more of zircon powder, spodumene powder, silicon carbide powder, magnesium aluminum spinel powder, magnesium chromium spinel powder, and aluminum chromium spinel powder according to 7:1 or 7: Prepared by mixing the amount of 1:0.5. Among them, the composite suspending agent is prepared by mixing sodium bentonite, attapulgite and polyacrylamide in a ratio of 1:1. The composite binder is prepared by mixing polyvinyl alcohol and α-starch. The penetrant is dioctyl sulfosuccinate sodium salt. The leveling agent is a fluorine-modified hydroxyl-containing acrylic resin. The co-solvent is made of fluorite and iron oxide...

Embodiment 3

[0037] A water-based dip-coating coating for 3D printing sand molds, which is composed of 60% composite refractory aggregate, 4.5% composite suspending agent, 1% composite binder, 0.3% penetrating agent, 0.4% leveling agent, DL -T201 preservative 0.1%, flux 4%, defoamer 0.2%, water 29.5% mixed configuration. The composite refractory aggregate is composed of two or more of zircon powder, spodumene powder, silicon carbide powder, magnesium aluminum spinel powder, magnesium chromium spinel powder, and aluminum chromium spinel powder according to 7:1 or 7: Prepared by mixing the amount of 1:0.5. Among them, the composite suspending agent is prepared by mixing sodium bentonite, attapulgite and polyacrylamide in a ratio of 1:1. The composite binder is prepared by mixing polyvinyl alcohol and α-starch. The penetrant is dioctyl sulfosuccinate sodium salt. The leveling agent is a fluorine-modified hydroxyl-containing acrylic resin. The co-solvent is made of fluorite and iron oxide ...

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PUM

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Abstract

The invention relates to the technical field of 3D printing sand casting, in particular to a 3D printing sand mold water-based dip coating and a preparation method thereof. The 3D printing sand mold water-based dip coating is prepared from the following components in percentage by weight: 50 to 75% of composite refractory aggregate, 3 to 6% of composite suspending agent, 0.8 to 1.2% of composite binder, 0.1 to 0.5% of penetrant, 0.2 to 0.6% of leveling agent, 0.05 to 0.2% of DL-T201 preservative, 2 to 5% of flux, 0.1 to 0.3% of defoamer, and 25 to 38% of water. The invention also discloses a preparation method of the 3D printing sand mold water-based dip coating. The coating has excellent performance, excellent coating property, proper permeability, good leveling property, high suspensionstability, suitable coating thickness, good sintering peeling property and superior anti-sticking property. Compared with conventional coatings, the coating can be applied only once by dip coating. The penetration depth and coating thickness can meet the requirements. After drying, the coating strength is very high. No flow mark, no dripping, and no accumulation exist.

Description

technical field [0001] The invention relates to the technical field of 3D printing sand mold casting, in particular to a 3D printing sand mold water-based dip coating and a preparation method thereof. Background technique [0002] In order to promote the development, transformation and upgrading of China's manufacturing industry, the country launched the "Made in China 2025 Plan" to make the manufacturing industry embark on the road of innovative enterprises through technological innovation and the introduction of high-end smart equipment. [0003] 3D printing technology combines many high-tech advantages such as computer graphics processing, digital information control, electromechanical technology and material technology. At present, 3D printing technology is specifically applied to the modeling and core making department in the foundry process, which is used to quickly manufacture sand molds / cores and save molds. Compared with the traditional core making method, the indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 雍晓晋
Owner 贵阳灵峰铸造材料有限公司
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