CN103008528A - Simple alcohol-based casting coating and preparation method thereof - Google Patents
Simple alcohol-based casting coating and preparation method thereof Download PDFInfo
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- CN103008528A CN103008528A CN2012104464434A CN201210446443A CN103008528A CN 103008528 A CN103008528 A CN 103008528A CN 2012104464434 A CN2012104464434 A CN 2012104464434A CN 201210446443 A CN201210446443 A CN 201210446443A CN 103008528 A CN103008528 A CN 103008528A
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Abstract
The invention discloses a simple alcohol-based casting coating and a preparation method thereof and belongs to the field of casting coatings. The coating comprises the following components in parts by weight: 65-75 parts of zircon power, 1.5-4 parts of lithium-based bentonite, 1-2.5 parts of clay, 0.8-3.5 parts of resin, 5-10 parts of silica sol, 0.1-0.3 part of polyvinyl butyral and 45-55 parts of industrial alcohol. The coating preparation method sequentially comprises the following steps of: 1, weighing and grinding the zircon power, adding and grinding lithium-based bentonite, adding and grinding clay and silica sol, adding and grinding resin, wherein the powder is uniformly ground; and adding an additive polyvinyl butyral into the powder, and fully grinding to prepare dry powder; and 2, slowly adding alcohol into the dry powder, stirring to a proper concentration, and preparation the coating. The defects in the prior art are overcome, the coating has good effects on aspects of suspension, brushing property, high-temperature cracking resistance and burnt-on sand resistance, and the produced casting piece is excellent in surface quality; and moreover, the coating is simple and rapid in process, short in production cycle, high in production efficiency, low in cost and good in market prospect.
Description
Technical field
The present invention relates to the alcohol-base foundry coating technical field.
Background technology
Cast paint is the skim refractory coating that is coated on casting mold (core) surface.It is for the quality of improving casting mold (core) working surface, and the foundry goods that obtains excellent surface quality has great importance.If cast paint is used appropriate, it should be able to play following effect in foundry work: prevent physics scab and chemical scab; Reduce the surface roughness value; Reinforcing sand mold surface, the sand washing phenomenon when reducing casting; The protection metal mold is also controlled the process of setting of foundry goods; Interaction between reinforced metal-coating-casting mold between (core) improves cast(ing) surface performance and internal soundness.
But the domestic cast paint product of China more still exists larger gap with external quality product technically at present, can not satisfy the technical quality requirement of domestic castings production.Its mass defect is mainly manifested in:
1, coating suspension poor stability.
2, production efficiency is low.In the preparation coating process, cause suspending agent and will reach 3-4 hour, the production cycle is long, troublesome poeration, and labour intensity is high, and production cost is also high.
3, affect workers ' health and environment.When being organobentonite, must cause with toluene or dimethylbenzene by suspending agent.This initator has excitant to skin, mucous membrane, and central nervous system is had anesthetic effect, and neurasthenic syndrome can occur Long Term Contact, and environment is had serious harm.
Although, a kind of " mould coating made of lithium bentonite and zirconite powder " (application number: 86105456) by name is disclosed at Chinese patent, also disclose a kind of name and be called " alcohol radical or water base sand powder penetration-prevention cast paint " (application number: 200510018167), but its quality and technical index poor performance, show as suspension poor, easily sink to the bottom and harden, the brushing difficulty.And another kind of " alcohol zircon flour coating for heavy castings and manufacture method thereof " (application number: patent 200610022334.4) by name, although increase in the quality and technical index performance, but its raw material components is complicated, needs to add zirconium English powder, lithium bentonite, deionized water, modification Magnesiumaluminumsilicate, nanoscale thickener (clay), alundum (Al2O3), water-soluble polyester resin, polyvinyl butyral resin (PVB), rosin, industrial alcohol, isopropyl alcohol, heavy aromatic solvent oil 150#.Aromatic hydrocarbon refers to benzene,toluene,xylene etc., the benzene of prolonged and repeated Low Level Exposure can cause slow poisoning, mainly is the infringement to nervous system, hemopoietic system, shows as headache, dizziness, insomnia, white blood cell continuous decrease, decrease of platelet and hemorrhagic tendency occurs, even bring out leukaemia.As seen heavy aromatic solvent oil has serious harm to human body.And this kind manufacture method production process required time is long, need more than the 24h such as the activated li base bentonite, making nanoscale thickener pregel needs more than the 24h, making modification Magnesiumaluminumsilicate pregel needs more than the 24h, making 10% polyvinyl butyral resin solution need leave standstill more than the 48h, production efficiency is low like this, has also virtually increased production cost.
Three, summary of the invention
The technical problem to be solved in the present inventionBe: overcome many defectives of prior art, study a kind of high-quality, the simple alcohol-base foundry coating of raw material components and high, the simple and efficient manufacture method of production efficiency.
Technical solution of the present invention is as follows:
A kind of simple and easy alcohol-base foundry coating, this coating is comprised of following raw materials according, each composition weight ratio:
Zirconium English powder 65-75 part, lithium bentonite 1.5-4 part, clay 1-2.5 part, resin 0.8-3.5 part, Ludox 5-10 part, polyvinyl butyral resin (PVB) 0.1-0.3 part, industrial alcohol 45-55 part.
The manufacture method of above-mentioned simple and easy alcohol-base foundry coating, must carry out successively according to the following steps:
1, preparation dry powder:
1. taking by weighing fire-resistant orthopaedics zirconium English powder 65-75 part rolled in container 8-15 minute;
2. adding suspending agent lithium bentonite 1.5-4 part rolled 3-7 minute;
3. add high-temperature agglomerant clay 1-2.5 part, Ludox 5-10 part was rolled 5-10 minute;
4. add normal temperature resin glue 0.8-3.5 part and rolled 3-7 minute, guarantee that powder rolls evenly;
5. add the additives polyvinyl butyral resin (PVB) of 0.1-0.3 part in the powder, fully roll and be prepared into dry powder in 3-5 minute;
2, preparation alcohol-base foundry coating:
It is suitable slowly to add 45-55 part alcohol in the dry powder and be stirred to coating concentration.
Manufacture process of the present invention has been omitted the elicitation procedure of suspending agent.
By the coating that above-mentioned embodiment makes, its key technical indexes is as shown in table 1.
The key technical indexes of table 1 coating of the present invention
With coating of the present invention and " alcohol radical or water base sand powder penetration-prevention cast paint " (application number: 200510018167) by name, " alcohol zircon flour coating for heavy castings and manufacture method thereof " (application number: patent 200610022334.4) is made comparisons, result such as table 2:
The contrast of table 2 performance indications
Coating of the present invention has following remarkable result:
The present invention is also advantageous in that except the defective that has effectively solved coating suspension, poor stability:
One, omits initiation or the swelling process of suspending agent, shortened the coating material production time, improved production efficiency.
Its elicitation procedure must be with toluene or dimethylbenzene when two, suspending agent was organobentonite, and the present invention does not need the elicitation procedure of suspending agent, has therefore avoided use toluene or dimethylbenzene, is conducive to workers ' health and environment.
Therefore three, common used dry powder mold paint is because need initiation or swelling process mostly to be greatly paste, the present invention can directly prepare the powdery finished product, and technique is simple, and the storage life is long, convenient transportation.
Four, the suspension of coating of the present invention is good, is difficult for precipitation.The 24h suspension reaches more than 99%, and the suspension index of this product is much higher than the corresponding index of national machinery industry standard JBT 9226-2008 " sand casting coating ".
Five, coating brushability of the present invention is good, can make fire resistant infilling evenly be covered with sand mold (core), improves the surface quality of sand mold (core), improves anti-stick sand ability, reduces the blemish of foundry goods.
Six, coating of the present invention has good thixotroping thickening effect.Coating after being long placed in after stirring 2 is enclosed clockwise along the graduated cylinder wall, is poured respectively beaker into, finds that still there is a large amount of sediments in the coating that traditional handicraft is produced in the graduated cylinder bottom, and precipitation-free thing bottom the coating of the present invention.
In a word, this formulation for coating material is simple, when the suspension stability that guarantees product is good, can shorten the production cycle, enhances productivity, and reduces cost, and the widely market demand is arranged.
Four, the specific embodiment
Embodiment 1:
1, coating is comprised of following component: 66 parts in zirconium English powder, 1.8 parts of lithium bentonites, 0.8 part of clay, 7 parts of Ludox, 2.5 parts of resins, 0.3 part of polyvinyl butyral resin (PVB), 45 parts of industrial alcohol.
2, preparation method for coating:
(1) preparation dry powder:
1. taking by weighing 66 parts in fire resistant infilling zirconium English powder rolled in container 10 minutes;
2. adding 1.8 parts in suspending agent lithium soil rolled 5 minutes;
3. adding 7 parts of 0.8 part of high-temperature agglomerant clays, Ludox rolled 6 minutes;
4. add 2.5 parts of normal temperature resin glues and rolled 5 minutes, guarantee that powder rolls evenly;
5. in powder, add 0.3 part additives polyvinyl butyral resin PVB, fully rolled 5 minutes, be prepared into dry powder;
(2) preparation alcohol-base foundry coating:
It is suitable slowly to add 45 parts of alcohol in the dry powder and be stirred to coating concentration.
The key property test result of the implementation case coating sees Table 3.
Embodiment 2:
1, coating is comprised of following component: 70 parts in zirconium English powder, 2 parts of lithium bentonites, 1.5 parts of clays, 8 parts of Ludox, 2.8 parts of resins, 0.2 part of polyvinyl butyral resin (PVB), 50 parts of industrial alcohol.
2, preparation method for coating:
(1) preparation dry powder:
1. taking by weighing 70 parts in fire resistant infilling zirconium English powder pours into and rolls 12 minutes in the container;
2. adding 2 parts in suspending agent lithium soil rolled 5 minutes;
3. adding 8 parts of 1.5 parts of high-temperature agglomerant clays, Ludox rolled 8 minutes;
4. add 2.8 parts of normal temperature resin glues and rolled 5 minutes, guarantee that powder rolls evenly in container;
5. in powder, add 0.2 part additives polyvinyl butyral resin PVB, fully rolled 5 minutes, be prepared into dry powder;
(2) preparation alcohol-base foundry coating:
It is suitable slowly to add 50 parts of alcohol in the dry powder and be stirred to coating concentration.
The key property test result of the implementation case coating sees Table 3.
Embodiment 3:
1, coating is comprised of following component: 75 parts in zirconium English powder, 3.5 parts of lithium bentonites, 2.5 parts of clays, 10 parts of Ludox, 3.5 parts of resins, 0.25 part of polyvinyl butyral resin (PVB), 55 parts of industrial alcohol.
2, preparation method for coating:
(1) preparation dry powder:
1. taking by weighing 75 parts in fire resistant infilling zirconium English powder rolled in container 15 minutes;
2. adding 3.5 parts in suspending agent lithium soil rolled 7 minutes;
3. adding 10 parts of 2.5 parts of high-temperature agglomerant clays, Ludox rolled 10 minutes;
4. add 3.5 parts of normal temperature resin glues and rolled 6 minutes, guarantee that powder rolls evenly;
5. in powder, add 0.25 part additives polyvinyl butyral resin PVB, fully rolled 5 minutes, be prepared into dry powder;
(2) preparation alcohol-base foundry coating:
It is suitable slowly to add 55 parts of alcohol in the dry powder and be stirred to coating concentration.
The key property test result of the implementation case coating sees Table 3.
Below further specify by experiment Application of coatings effect of the present invention:
Coating of the present invention (alcohol zircon coating) has carried out the key property test and has produced the contrast experiment in Lanzhou Lan Shi Foundry Inc. with Britain Fushi section (FOSECO) similar coating, and situation is as follows:
1. key property test
Take the method for random sampling, extract approximately 4kg coating sample and carried out the test of following key property, result such as table 3:
Table 3 key property test result
2. produced on-site test
Select respectively each a kind on valve casing, high-pressure inner cylinder foundry goods, compare test at crust.
Valve casing class foundry goods is selected figure number: the F-D600C-261110A main air valve housing part of doing experiment.This foundry goods gross weight: 7900KG, molten steel gross weight: 12000KG.This foundry goods has certain representativeness in valve casing class foundry goods.
High-pressure inner cylinder class foundry goods is selected figure number: second part of doing experiment of D100D-021112A001 hp outer cylinder.This foundry goods gross weight: 8930KG, molten steel gross weight: 18000KG.This foundry goods has certain representativeness in various Engine Body Castings.
Appearance surfaces behind the foundry goods drawing, any surface finish at coating of the present invention position, without scab phenomenon.
3. conclusion
Show by above-mentioned key property test and produced on-site test: coating of the present invention is having good effect aspect suspension, brushability, high-temperature resistant property, the anti-stick grittiness, the excellent surface quality of the foundry goods of producing.
Claims (2)
1. a simple and easy alcohol-base foundry coating and manufacture method thereof, it is characterized in that: this coating is comprised of following raw materials according, each composition weight ratio: refractory aggregate zirconium English powder 65-75 part, lithium bentonite 1.5-4 part, clay 1-2.5 part, resin 0.8-3.5 part, Ludox 5-10 part, polyvinyl butyral resin (PVB) 0.1-0.3 part, industrial alcohol 45-55 part.
2. a kind of simple and easy alcohol-base foundry coating according to claim 1 and manufacture method thereof is characterized in that: must prepare successively according to the following steps:
A. prepare dry powder: 1. take by weighing refractory aggregate zirconium English powder 65-75 part and in container, rolled 8-15 minute; 2. adding suspending agent lithium bentonite 1.5-4 part rolled 3-7 minute; 3. add high-temperature agglomerant clay 1-2.5 part, Ludox 5-10 part was rolled 5-10 minute; 4. add normal temperature resin glue 0.8-3.5 part and rolled 3-7 minute, guarantee that powder rolls evenly; 5. add the additives polyvinyl butyral resin (PVB) of 0.1-0.3 part in the powder, fully roll and be prepared into dry powder in 3-5 minute;
B. prepare alcohol-base foundry coating: it is suitable slowly to add 45-55 part alcohol in the dry powder and be stirred to coating concentration.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084529A (en) * | 2014-06-16 | 2014-10-08 | 芜湖市鸿坤汽车零部件有限公司 | Modified steel slag alcohol-based casting coating and making method thereof |
| CN104209455A (en) * | 2014-09-12 | 2014-12-17 | 沈阳工业大学 | Refractory aggregate, stainless steel casting paint consisting of same and preparation method thereof |
| CN104550679A (en) * | 2014-12-29 | 2015-04-29 | 三峡大学 | Environment-friendly alcohol-based coating for sand mold casting |
| 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 |
| CN107377867A (en) * | 2017-08-22 | 2017-11-24 | 汉川市石金科技有限公司 | A kind of steel moulder's paint and preparation method thereof |
| 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 |
| CN108220869A (en) * | 2016-12-15 | 2018-06-29 | 杭州冠南精密铸造有限公司 | A kind of carburization process of excavator bucket teeth |
| CN109465382A (en) * | 2018-11-15 | 2019-03-15 | 孔强用 | A kind of quick-drying alcohol-base foundry coating and preparation method thereof |
| CN110315025A (en) * | 2019-07-22 | 2019-10-11 | 宜兴市国昌轧辊有限公司 | A kind of self-control cast steel roll mould wash and preparation method thereof |
| CN113680959A (en) * | 2021-09-08 | 2021-11-23 | 张宇 | Novel casting alcohol-based paint and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084529A (en) * | 2014-06-16 | 2014-10-08 | 芜湖市鸿坤汽车零部件有限公司 | Modified steel slag alcohol-based casting coating and making method thereof |
| CN104209455A (en) * | 2014-09-12 | 2014-12-17 | 沈阳工业大学 | Refractory aggregate, stainless steel casting paint consisting of same and preparation method thereof |
| CN104209455B (en) * | 2014-09-12 | 2016-04-13 | 沈阳工业大学 | A kind of refractory aggregate and consisting of stainless steel cast paint and preparation method thereof |
| CN104550679A (en) * | 2014-12-29 | 2015-04-29 | 三峡大学 | Environment-friendly alcohol-based coating for sand mold casting |
| CN104550679B (en) * | 2014-12-29 | 2017-03-15 | 三峡大学 | A kind of sand casting environment-friendly type alcohol-base paint |
| 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 |
| CN108220869A (en) * | 2016-12-15 | 2018-06-29 | 杭州冠南精密铸造有限公司 | A kind of carburization process of excavator bucket teeth |
| 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 |
| CN107377867A (en) * | 2017-08-22 | 2017-11-24 | 汉川市石金科技有限公司 | A kind of steel moulder's paint and preparation method thereof |
| CN107377867B (en) * | 2017-08-22 | 2019-10-18 | 汉川市石金科技有限公司 | A kind of steel moulder's paint and preparation method thereof |
| CN109465382A (en) * | 2018-11-15 | 2019-03-15 | 孔强用 | A kind of quick-drying alcohol-base foundry coating and preparation method thereof |
| CN110315025A (en) * | 2019-07-22 | 2019-10-11 | 宜兴市国昌轧辊有限公司 | A kind of self-control cast steel roll mould wash and preparation method thereof |
| CN113680959A (en) * | 2021-09-08 | 2021-11-23 | 张宇 | Novel casting alcohol-based paint and preparation method thereof |
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Application publication date: 20130403 |