CN105057570A - Water-based paint for lightweight evaporative pattern casting and enhanced by nanometer silicon carbide and preparing method of water-based paint - Google Patents

Water-based paint for lightweight evaporative pattern casting and enhanced by nanometer silicon carbide and preparing method of water-based paint Download PDF

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Publication number
CN105057570A
CN105057570A CN201510455186.4A CN201510455186A CN105057570A CN 105057570 A CN105057570 A CN 105057570A CN 201510455186 A CN201510455186 A CN 201510455186A CN 105057570 A CN105057570 A CN 105057570A
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China
Prior art keywords
coating
paint
water
silicon carbide
nanometer silicon
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Pending
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CN201510455186.4A
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Chinese (zh)
Inventor
刘和明
刘和兵
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MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
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MINGGUANG CITY LIUXIANG PUMP INDUSTRY Co Ltd
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Priority to CN201510455186.4A priority Critical patent/CN105057570A/en
Publication of CN105057570A publication Critical patent/CN105057570A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the technical field of evaporative pattern casting, and in particular to a water-based paint for lightweight evaporative pattern casting and enhanced by nanometer silicon carbide and a preparing method of the water-based paint. Zircon sand and calcium hexaluminate serve as refractory aggregate of the paint, wherein the zircon sand and calcium hexaluminate are different from each other in particle size, so that the breathability of a coating is improved. Mixed slurry of super-light clay and sodium carboxymethylcellulose serves as a suspension agent, so that the paint is made to have good suspension performance and thixotropy. The added nanometer silicon carbide enhances the heat resistance and mechanical properties of the coating. Sand viscidity prevention of the coating can be improved through scattered microcrystalline wax, and the microcrystalline wax is melted in the casting process, so that the breathability of the coating is further improved. The paint coating prepared through the method is light and thin, tenacious and firm, good in attachment to metal liquid, high in heat stability, free of polluting metal liquid and easy to strip after casting is finished, and the quality of castings is effectively improved.

Description

Lightweight Water-based coating for lost foam casting that a kind of nanometer silicon carbide strengthens and preparation method thereof
Technical field
The present invention relates to Technology of EPC field, be specifically related to lightweight Water-based coating for lost foam casting of a kind of nanometer silicon carbide enhancing and preparation method thereof.
Background technology
Refractory Coating for Lost Foam Casting refers to one deck handtailor coating being coated in apperance outer surface in lost foam casting process, it plays critical effect in casting process, because apperance is made up of foamed plastics, the character such as gas permeability, strength of coating, rheological characteristic of coating all will produce vital impact to cast article, the lost foam paint of function admirable should meet: (1) can assist the intensity and rigidity that improve foam plastics mould, prevents apperance from destroying and distortion; (2) there is buffer action, molten metal and model are separated, prevent molten metal from infiltrating in dry sand, prevent cast(ing) surface from forming defect; (3) permeation functions, gets rid of apperance in time and decomposes the gas or liquid that produce, prevent foundry goods from occurring pore, carbon black defect etc.; (4) good sintering fissility, anti-sand viscosity, anti-metal liquid aggressivity etc. will be had; (5) characteristic such as good wetability, being coated with property, the feature of environmental protection, heat endurance, protection against the tide will be had.
Lost foam paint composition mainly comprises the compositions such as refractory aggregate, bonding agent, solvent, suspending agent and various additives, the adhesive properties used by it is divided and is mainly divided into several classes such as water based paint, alcohol-base paint, cold coating, wherein water based paint because cost lower apply in actual production comparatively extensive, but water based paint exists when coating is cleared up easily defeated and dispersed, easy scab, and the serviceability of most of product still existing defects, do not reach foregoing effect.
Summary of the invention
The object of the invention is to, prepare the lightweight Water-based coating for lost foam casting that a kind of nanometer silicon carbide strengthens, have high strength, the frivolous apperance coating of breathing freely, being easy to peel off cleaning to obtain, to achieve these goals, the technical solution used in the present invention is as follows:
The lightweight Water-based coating for lost foam casting that a kind of nanometer silicon carbide strengthens, it is characterized in that, this coating is made up of the raw material of following weight portion: 180-250 order zircon sand 50-60,250-325 order calcium hexaluminate 10-15, ultralight clay 2-3, nanometer silicon carbide 0.1-0.2, solid content are microwax emulsion 5-8, the OP-100.02-0.03 of 25-35%, polyquaternium 0.001-0.002, defoamer 0.01-0.02, white glue with vinyl 2-3, sodium carboxymethylcellulose 0.2-0.3, soft water 25-30.
The preparation method of the lightweight Water-based coating for lost foam casting that described a kind of nanometer silicon carbide strengthens, it is characterized in that, described preparation method is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into nanometer silicon carbide, ultralight clay, ultrasonic high-speed stirred makes it dispersed in the solution, add microwax emulsion more subsequently, be uniformly mixed grinding 40-50min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by zircon sand, calcium hexaluminate and the step (1) of 12-16 weight portion, after high-speed stirred dispersion 30-40min, add other leftover materials all again, and add soft water according to required slurry density, continue dispersed with stirring 40-50min again, to obtain final product.
The zircon sand that coating prepared by the present invention there are differences using particle diameter, calcium hexaluminate are as refractory aggregate, the gas permeability of coating is increased, and using ultralight clay and sodium carboxymethylcellulose mixed slurry as suspending agent, coating is made to have good suspension and thixotropy, the nanometer silicon carbide added enhances heat resistance and the mechanical property of coating, dispersion microwax can improve coating sand control viscosity, and in casting process fast melt, improve coating's permeability further; The paint coatings that this invention prepares is frivolous, firmly tough and tensile, and good with the stickiness of molten metal, heat endurance is high, does not pollute molten metal, and casting terminates rear easy stripping, effectively raises casting quality.
Detailed description of the invention
Embodiment
The coating of the present embodiment is made up of the raw material of following weight portion: 200 order zircon sand 55,325 order calcium hexaluminates 12, ultralight clay 2.5, nanometer silicon carbide 0.1, solid content are microwax emulsion 6, OP-100.02, polyquaternium 0.001, defoamer 0.01, white glue with vinyl 2.5, sodium carboxymethylcellulose 0.2, the soft water 28 of 30%.
The preparation method of this coating is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into nanometer silicon carbide, ultralight clay, ultrasonic high-speed stirred makes it dispersed in the solution, add microwax emulsion more subsequently, be uniformly mixed grinding 45min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by zircon sand, calcium hexaluminate and the step (1) of 15 weight portions, after high-speed stirred dispersion 35min, add other leftover materials all again, and add appropriate soft water, continue dispersed with stirring 40min, adjusting coating density is 65 Baume degrees, to obtain final product.
Coating property test result obtained by the present embodiment is:
Test item Testing result
Strength of coating (0.8mm thick coating) 4.65×10 5Pa
Gas permeability (0.8mm thick coating × 1200 DEG C) 4.20cm 4·(g·min) -1
Suspension (24h) 97%
Once be coated with thickness δ 0.4mm

Claims (2)

1. the lightweight Water-based coating for lost foam casting of a nanometer silicon carbide enhancing, it is characterized in that, this coating is made up of the raw material of following weight portion: 180-250 order zircon sand 50-60,250-325 order calcium hexaluminate 10-15, ultralight clay 2-3, nanometer silicon carbide 0.1-0.2, solid content are microwax emulsion 5-8, the OP-100.02-0.03 of 25-35%, polyquaternium 0.001-0.002, defoamer 0.01-0.02, white glue with vinyl 2-3, sodium carboxymethylcellulose 0.2-0.3, soft water 25-30.
2. the preparation method of the lightweight Water-based coating for lost foam casting of a kind of nanometer silicon carbide enhancing as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first OP-10, sodium carboxymethylcellulose are dropped in soft water, be stirred to after dissolving completely, drop into nanometer silicon carbide, ultralight clay, ultrasonic high-speed stirred makes it dispersed in the solution, add microwax emulsion more subsequently, be uniformly mixed grinding 40-50min, gained mixed slurry is for subsequent use;
(2) drop in agitator together with the slurry prepared by zircon sand, calcium hexaluminate and the step (1) of 12-16 weight portion, after high-speed stirred dispersion 30-40min, then add other leftover materials all, and add soft water according to required slurry density, continue dispersed with stirring 40-50min again, to obtain final product.
CN201510455186.4A 2015-07-27 2015-07-27 Water-based paint for lightweight evaporative pattern casting and enhanced by nanometer silicon carbide and preparing method of water-based paint Pending CN105057570A (en)

Priority Applications (1)

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CN201510455186.4A CN105057570A (en) 2015-07-27 2015-07-27 Water-based paint for lightweight evaporative pattern casting and enhanced by nanometer silicon carbide and preparing method of water-based paint

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Application Number Priority Date Filing Date Title
CN201510455186.4A CN105057570A (en) 2015-07-27 2015-07-27 Water-based paint for lightweight evaporative pattern casting and enhanced by nanometer silicon carbide and preparing method of water-based paint

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CN105057570A true CN105057570A (en) 2015-11-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105562592A (en) * 2016-01-11 2016-05-11 明光市留香泵业有限公司 Low-carbon-residue high-temperature-creep-resisting lost foam casting water-based paint with nanophase ceramic powder solution enhancement function and preparation method of water-based paint
CN105983649A (en) * 2016-01-11 2016-10-05 明光市留香泵业有限公司 Ceramic micro powder containing reinforced low-carbon-residue high-breathability water-based paint for lost foam casting and preparation method thereof
CN107052232A (en) * 2017-06-28 2017-08-18 安徽华飞机械铸锻有限公司 A kind of full-mold casting coating and preparation method thereof
CN110093049A (en) * 2018-01-28 2019-08-06 吴军 A kind of chemical pump wear-resistant paint and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413437A (en) * 1990-05-07 1992-01-17 Kawasaki Steel Corp Molding material for casting high melting point active metal
CN1196282A (en) * 1997-04-11 1998-10-21 周清运 Coating for dispellable mould casting
CN1363436A (en) * 2001-12-11 2002-08-14 上海交通大学 Casting paint for adsorptive lost Al-alloy mould and its preparing process
CN102366816A (en) * 2011-10-11 2012-03-07 许立新 Preparation method of water-based coating for lost foam casting
CN103056289A (en) * 2013-01-25 2013-04-24 马鞍山市华达冶金机械有限公司 Casting paint for high-chromium cast iron and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0413437A (en) * 1990-05-07 1992-01-17 Kawasaki Steel Corp Molding material for casting high melting point active metal
CN1196282A (en) * 1997-04-11 1998-10-21 周清运 Coating for dispellable mould casting
CN1363436A (en) * 2001-12-11 2002-08-14 上海交通大学 Casting paint for adsorptive lost Al-alloy mould and its preparing process
CN102366816A (en) * 2011-10-11 2012-03-07 许立新 Preparation method of water-based coating for lost foam casting
CN103056289A (en) * 2013-01-25 2013-04-24 马鞍山市华达冶金机械有限公司 Casting paint for high-chromium cast iron and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105562592A (en) * 2016-01-11 2016-05-11 明光市留香泵业有限公司 Low-carbon-residue high-temperature-creep-resisting lost foam casting water-based paint with nanophase ceramic powder solution enhancement function and preparation method of water-based paint
CN105983649A (en) * 2016-01-11 2016-10-05 明光市留香泵业有限公司 Ceramic micro powder containing reinforced low-carbon-residue high-breathability water-based paint for lost foam casting and preparation method thereof
CN107052232A (en) * 2017-06-28 2017-08-18 安徽华飞机械铸锻有限公司 A kind of full-mold casting coating and preparation method thereof
CN110093049A (en) * 2018-01-28 2019-08-06 吴军 A kind of chemical pump wear-resistant paint and preparation method thereof

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Application publication date: 20151118