CN102218502A - Isopropanol-based coating for lost foam casting steel and production method thereof - Google Patents

Isopropanol-based coating for lost foam casting steel and production method thereof Download PDF

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Publication number
CN102218502A
CN102218502A CN2011101977265A CN201110197726A CN102218502A CN 102218502 A CN102218502 A CN 102218502A CN 2011101977265 A CN2011101977265 A CN 2011101977265A CN 201110197726 A CN201110197726 A CN 201110197726A CN 102218502 A CN102218502 A CN 102218502A
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CN
China
Prior art keywords
coating
isopropyl alcohol
lost foam
isopropanol
production
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Pending
Application number
CN2011101977265A
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Chinese (zh)
Inventor
徐峰
冯小明
沈红舟
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ZHEJIANG CHENYU HEAVY INDUSTRY CO LTD
Shaanxi University of Technology
Original Assignee
ZHEJIANG CHENYU HEAVY INDUSTRY CO LTD
Shaanxi University of Technology
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Application filed by ZHEJIANG CHENYU HEAVY INDUSTRY CO LTD, Shaanxi University of Technology filed Critical ZHEJIANG CHENYU HEAVY INDUSTRY CO LTD
Priority to CN2011101977265A priority Critical patent/CN102218502A/en
Publication of CN102218502A publication Critical patent/CN102218502A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an isopropanol-based coating for lost foam casting steel and a production method thereof. The coating uses alumina-zirconia powder as a fireproof material, uses PVB (Polyvinyl Butyral) and phenol formaldehyde resin as adhesives, uses organic bentonite as a suspending agent, and takes suitable quantity of isopropanol as a material coating carrier. The production method comprises the following steps of firstly dissolving the PVB and the phenol formaldehyde resin in an alcohol; sufficiently mixing the mixed solution to form a colloida solution; subsequently mixing the organic bentonite and the alumina-zironia powder uniformly; finally conducting sufficient ball-grinding and mixing to the mixed aggregates, adhesive solutions and isopropanol for 45-70 minutes at the speed of 1450r/min, thus preparing the isopropanol-based coating for lost foam casting steel. The coating has low manufacturing cost, simple technological process and high casting quality, and is particularly suitable for roughcast production of complex and large cast steel.

Description

Lost foam cast steel isopropyl alcohol base coating and manufacture method thereof
Technical field
The present invention relates to a kind of coating and manufacture method thereof, specifically, relate to a kind of lost foam cast steel isopropyl alcohol base coating and manufacture method thereof.
Background technology
The lost foam casting technology is that the foamed plastic model bonding similar to the casting dimension shape is combined into model cluster, after brushing refractory coating and oven dry, be embedded in vibration molding in the dry sand, under condition of negative pressure, pour into a mould liquid metals, make the model gasification and occupy modal position, solidify the method that the cooling back forms required foundry goods.Lost foam paint plays important effect in lost foam casting process, be that lost foam casting obtains the requisite auxiliary material of any surface finish premium casting.Lost foam cast steel coating generally becomes to be grouped into by refractory material, suspending agent, binding agent, carrier fluid and additive etc. are several.Lost foam cast steel coating should generally should have following basic function: (1) buffer action.During cast molten metal and casting mold are kept apart, prevent that molten metal from infiltrating in the gap that forms glutinous sand and dry sand inflow molten metal and Foam Pattern in the sand mold, causes casting mold " crush ".(2) humidification.Dope layer can improve the strength and stiffness of foam plastics mould, prevents that apperance from destroying or be out of shape in transportation, and plays the effect of supporting dry sand at casting cycle, and do not cause the sand mold avalanche.(3) scavenging action.Dope layer can allow a large amount of gas of foamed plastics thermal decomposition successfully be discharged to outside the sandbox under negative pressure, reduces or prevents that foundry goods from producing defectives such as pore or surperficial carburetting.
The composition proportion and the performance of lost foam cast steel production requirement coating should adapt with lost foam casting process, otherwise will make foundry goods produce a large amount of pores, burning into sand and carburetting defective, cause the phenomenon that the steel-casting quality descends and percent defective increases.Therefore,, be necessary to develop new coating to adapt to the production demand for obtaining the high-quality steel-casting, particularly particularly urgent for the production of large-scale steel-casting.
Lost foam cast steel coating mainly is divided into two big classes at present: water based paint and alcohol-base paint.Gas forming amount when the cast steel water based paint is poured into a mould for reducing guarantees casting quality, necessary oven dry after foam plastics mould is coated with and coats, and coating stoving process process is longer.Require short foundry goods for the production cycle, and the brushing of the repairing of coating and running gate system bonding process coating, all need the coating of quick-dry type, therefore, the exploitation quick drying paint has important effect in lost foam casting production.And cast steel alcohol-base paint foam plastics mould is coated with and need not dries after coating, can realize that under field conditions (factors) the fast of coating does, can remove complicated drying course from, generally do not need additive in the alcohol-base paint, the thickness of coating is thinner than water-based coating, its gas permeability is better, and the cleaning of foundry goods is easy than water based paint, and a large amount of experiment has shown the quality height of lost foam cast steel alcohol-base paint than water based paint foundry goods.
Domestic lost foam cast steel is a kind of with alcohol-base paint to be methanol-based coating, its prescription relatively more commonly used is: with zirconium English powder is main refractory material, phenolic resins and rosin are the organic binder bond of coating, and bentonite and sodium carbonate are suspending agent, use methyl alcohol as coating vehicles.Each component prescription of its coating is as shown in table 1.
Proportioning (the quality: %) of each component of table 1 coating
The shortcoming methanol-based lost foam paint of prior art one because methanol prices is cheap, is widely used in the carrier of barreled alcohol radical paste marketed coating.But methyl alcohol toxicity is big, and it is big that the human eye is injured tool, and is bigger to operator's actual bodily harm, should progressively be substituted for environmental protection factor methanol-based coating.
Domestic lost foam cast steel is an ethanol based coating with the alcohol-base paint another kind, and its prescription relatively more commonly used is: with Cab-O-sil and bauxite is main refractory material, and PVB is an organic binder bond, uses ethanol as coating vehicles.Each component prescription of its coating is as shown in table 2.
Proportioning (the quality: %) of each component of table 2 coating
The shortcoming ethanol based lost foam paint of prior art two makes that water content surpasses 3% in the ethanol because general concentration of alcohol is restricted, and residual moisture is higher and influence the dry strength and the drying time of coating when being used for lost foam paint, and ethanol coating burns fast.
Isopropyl alcohol has good flammability, and burning is slow, and quantity of heat production is moderate, and gas forming amount is low, and even more important is that isopropyl alcohol is safe, and toxicity is little, and isopropyl alcohol coating has overcome fast weakness and the excessive harm of methyl alcohol toxicity of ethanol coating burning, and price is also relatively more cheap.The isopropyl alcohol lost foam paint of being invented has good heat endurance, and suspension and being coated with hangs that performance is good, and intensity and permeability are strong, and rate of drying is fast, and paint thickness is thin, anti-scab of coating and acupuncture better function, and coating is easily peeled off, and casting cleaning is convenient.Cost with isopropyl alcohol group lost mould coating material production foundry goods is low, and technical process is simple, and the casting quality height is particularly suitable for blank production complicated, large cast steel.So in foundry industry, isopropyl alcohol is used to the carrier fluid as alcohol-base paint, but in the prior art, do not find a kind of coating of isopropyl alcohol base quick-dry type as yet.
Summary of the invention
The objective of the invention is to avoid above-mentioned the deficiencies in the prior art, in order to shorten the production cycle of foundry goods, and satisfy the repairing of coating and the brushing of running gate system bonding process coating, make a kind of lost foam cast steel isopropyl alcohol base coating and the manufacture method thereof that just can pour into a mould as early as possible after the coating brushing.Technical solution of the present invention is as follows:
A kind of lost foam cast steel adopts zirconium aluminium stone flour as refractory material with isopropyl alcohol base coating, this coating, and PVB and phenolic resins are binding agent, and organobentonite is a suspending agent, and an amount of isopropyl alcohol is a material coating carrier fluid.
Further preferred, the quality proportioning of described coating is: zirconium aluminium stone flour is that 100 parts, PVB are that 1 part, phenolic resins are 1-2 part, organobentonite 2-5 part, isopropyl alcohol 40-45 part.
A kind of lost foam cast steel the steps include: with the manufacture method of isopropyl alcohol base coating
(1) earlier PVB and phenolic resins are dissolved in alcohol, fully stirring is colloidal solution;
(2) then organic group bentonite, zirconium aluminium stone flour are stirred;
(3) at last the aggregate, binder solution and the isopropyl alcohol that mix were stirred 45~70 minutes with 1450 rev/mins the abundant ball milling of speed in the lump, and be made into isopropyl alcohol group lost mould steel moulder's paint.
Beneficial effect of the present invention:
1, the lost foam cast steel of this programme invention adopts new special refractory material zirconium aluminium stone flour as the coating aggregate with isopropyl alcohol base coating, and having changed traditional lost foam cast steel coating is the prescription of aggregate with zirconium English powder, has avoided in the zircon flour coating because of SiO 2And the chemical scab defective that between the FeO chemical reaction takes place and cause;
2, zirconium aluminium stone flour price only is 1/5 of a zirconium English powder, and its coating cost has only just reduced about 1/5 with regard to one in refractory material and saved cost;
3, to adopt isopropyl alcohol be that coating becomes quick drying paint as carrier fluid in the present invention, avoided the complex process of water based paint oven dry, and technical process is simplified greatly;
4, isopropyl alcohol coating has overcome the fast weakness of ethanol coating burning and the shortcoming of the excessive harm of methyl alcohol toxicity;
5, show that by a large amount of experiments the lost foam cast steel of being invented is good with isopropyl alcohol base coating property, be very suitable in the production of carbon steel, steel alloy, the castings production cycle request is shorter, and the coating of the purposes such as brushing of the repairing of coating and running gate system bonding process coating.
The specific embodiment
A kind of lost foam cast steel adopts zirconium aluminium stone flour as refractory material with isopropyl alcohol base coating, this coating, and PVB and phenolic resins are binding agent, and organobentonite is a suspending agent, and an amount of isopropyl alcohol is a material coating carrier fluid.
Further preferred, the quality proportioning of described coating is: zirconium aluminium stone flour is that 100 parts, PVB are that 1 part, phenolic resins are 1-2 part, organobentonite 2-5 part, isopropyl alcohol 40-45 part.
Lost foam cast steel of the present invention adopts zirconium aluminium stone flour as refractory material with isopropyl alcohol base coating, this coating, and PVB and phenolic resins are that binding agent mixes to make and is used for improving strength of coating, and organobentonite is a suspending agent, and an amount of isopropyl alcohol is a material coating carrier fluid.Concrete each set of dispense ratio of coating is shown in Table 3.
Proportioning (the quality: %) of each component of table 3 coating
A kind of lost foam cast steel the steps include: with the manufacture method of isopropyl alcohol base coating
(1) earlier PVB and phenolic resins are dissolved in alcohol, fully stirring is colloidal solution;
(2) then organic group bentonite, zirconium aluminium stone flour are stirred;
(3) at last the aggregate, binder solution and the isopropyl alcohol that mix were stirred 45~70 minutes with 1450 rev/mins the abundant ball milling of speed in the lump, and be made into isopropyl alcohol group lost mould steel moulder's paint.

Claims (3)

1. a lost foam cast steel is characterized in that with isopropyl alcohol base coating, and this coating adopts zirconium aluminium stone flour as refractory material, and PVB and phenolic resins are binding agent, and organobentonite is a suspending agent, and an amount of isopropyl alcohol is a material coating carrier fluid.
2. lost foam cast steel according to claim 1 is characterized in that the quality proportioning of described coating is with isopropyl alcohol base coating: zirconium aluminium stone flour is that 100 parts, PVB are that 1 part, phenolic resins are 1-2 part, organobentonite 2-5 part, isopropyl alcohol 40-45 part.
3. claim 1 or 2 described lost foam cast steels is characterized in that with the manufacture method of isopropyl alcohol base coating, the steps include:
(1) earlier PVB and phenolic resins are dissolved in alcohol, fully stirring is colloidal solution;
(2) then organic group bentonite, zirconium aluminium stone flour are stirred;
(3) at last the aggregate, binder solution and the isopropyl alcohol that mix were stirred 45~70 minutes with 1450 rev/mins the abundant ball milling of speed in the lump, and be made into isopropyl alcohol group lost mould steel moulder's paint.
CN2011101977265A 2011-07-15 2011-07-15 Isopropanol-based coating for lost foam casting steel and production method thereof Pending CN102218502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101977265A CN102218502A (en) 2011-07-15 2011-07-15 Isopropanol-based coating for lost foam casting steel and production method thereof

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Application Number Priority Date Filing Date Title
CN2011101977265A CN102218502A (en) 2011-07-15 2011-07-15 Isopropanol-based coating for lost foam casting steel and production method thereof

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CN102218502A true CN102218502A (en) 2011-10-19

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873261A (en) * 2012-08-31 2013-01-16 太仓科博尔精密铸业有限公司 Lost foam coating and preparation method thereof
CN102942887A (en) * 2012-11-22 2013-02-27 西安工程大学 Foamed plastic binder for lost form casting and method for preparing binder
CN103042168A (en) * 2012-12-30 2013-04-17 安岳县金龙机械制造有限公司 Lost foam casting coating and preparation method thereof
CN103406489A (en) * 2013-08-13 2013-11-27 上海市机械制造工艺研究所有限公司 High-concentration alcohol-based paint used in cast steel
CN103586405A (en) * 2013-10-30 2014-02-19 吴江市液铸液压件铸造有限公司 Alcohol-based powder coating for cast iron
CN106141077A (en) * 2016-08-30 2016-11-23 阜阳市富鑫铸造机械有限公司 A kind of highly-breathable dispellable mould casting isopropyl alcohol-base paint and preparation method thereof
CN106141076A (en) * 2016-08-30 2016-11-23 阜阳市富鑫铸造机械有限公司 A kind of nonferrous metal lost foam casting isopropyl alcohol-base paint and preparation method thereof
CN106141079A (en) * 2016-08-30 2016-11-23 阜阳市富鑫铸造机械有限公司 A kind of high intensity dispellable mould casting isopropyl alcohol-base paint and preparation method thereof
CN106334779A (en) * 2016-08-30 2017-01-18 阜阳市富鑫铸造机械有限公司 Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof
CN106580579A (en) * 2016-12-13 2017-04-26 重庆佐恩家具有限公司 Seat for special group
CN107520399A (en) * 2017-08-14 2017-12-29 金华万里扬机械制造有限公司 A kind of casting alcohol-base paint and preparation method thereof
CN110961570A (en) * 2019-12-31 2020-04-07 三祥新材股份有限公司 Preparation method of zirconium oxide composite spray coating for metal mold casting

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CN101288897A (en) * 2008-04-29 2008-10-22 即墨市海隆机械有限公司 Production method of water based paint special for lost foam
CN101486068A (en) * 2009-02-12 2009-07-22 上海市机械制造工艺研究所有限公司 Alcohol group zircon powder coating for large casting

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CN101288898A (en) * 2008-04-29 2008-10-22 即墨市海隆机械有限公司 Production method of casting alcohol based paints using resin bonded sand
CN101288897A (en) * 2008-04-29 2008-10-22 即墨市海隆机械有限公司 Production method of water based paint special for lost foam
CN101486068A (en) * 2009-02-12 2009-07-22 上海市机械制造工艺研究所有限公司 Alcohol group zircon powder coating for large casting

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873261A (en) * 2012-08-31 2013-01-16 太仓科博尔精密铸业有限公司 Lost foam coating and preparation method thereof
CN102873261B (en) * 2012-08-31 2015-03-04 太仓科博尔精密铸业有限公司 Lost foam coating and preparation method thereof
CN102942887A (en) * 2012-11-22 2013-02-27 西安工程大学 Foamed plastic binder for lost form casting and method for preparing binder
CN103042168B (en) * 2012-12-30 2015-06-03 安岳县金龙机械制造有限公司 Lost foam casting coating and preparation method thereof
CN103042168A (en) * 2012-12-30 2013-04-17 安岳县金龙机械制造有限公司 Lost foam casting coating and preparation method thereof
CN103406489A (en) * 2013-08-13 2013-11-27 上海市机械制造工艺研究所有限公司 High-concentration alcohol-based paint used in cast steel
CN103406489B (en) * 2013-08-13 2017-09-15 上海市机械制造工艺研究所有限公司 A kind of cast steel high density alcohol-base paint
CN103586405A (en) * 2013-10-30 2014-02-19 吴江市液铸液压件铸造有限公司 Alcohol-based powder coating for cast iron
CN103586405B (en) * 2013-10-30 2016-04-27 吴江市液铸液压件铸造有限公司 A kind of cast iron alcohol radical powder-type coating
CN106141077A (en) * 2016-08-30 2016-11-23 阜阳市富鑫铸造机械有限公司 A kind of highly-breathable dispellable mould casting isopropyl alcohol-base paint and preparation method thereof
CN106141079A (en) * 2016-08-30 2016-11-23 阜阳市富鑫铸造机械有限公司 A kind of high intensity dispellable mould casting isopropyl alcohol-base paint and preparation method thereof
CN106334779A (en) * 2016-08-30 2017-01-18 阜阳市富鑫铸造机械有限公司 Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof
CN106141076A (en) * 2016-08-30 2016-11-23 阜阳市富鑫铸造机械有限公司 A kind of nonferrous metal lost foam casting isopropyl alcohol-base paint and preparation method thereof
CN106580579A (en) * 2016-12-13 2017-04-26 重庆佐恩家具有限公司 Seat for special group
CN107520399A (en) * 2017-08-14 2017-12-29 金华万里扬机械制造有限公司 A kind of casting alcohol-base paint and preparation method thereof
CN110961570A (en) * 2019-12-31 2020-04-07 三祥新材股份有限公司 Preparation method of zirconium oxide composite spray coating for metal mold casting
CN110961570B (en) * 2019-12-31 2021-05-25 三祥新材股份有限公司 Preparation method of zirconium oxide composite spray coating for metal mold casting

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