CN1043897A - A kind of compound method of pattern casting superficial layer coating - Google Patents
A kind of compound method of pattern casting superficial layer coating Download PDFInfo
- Publication number
- CN1043897A CN1043897A CN 89100070 CN89100070A CN1043897A CN 1043897 A CN1043897 A CN 1043897A CN 89100070 CN89100070 CN 89100070 CN 89100070 A CN89100070 A CN 89100070A CN 1043897 A CN1043897 A CN 1043897A
- Authority
- CN
- China
- Prior art keywords
- superficial layer
- casting
- layer coating
- present
- compound method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The present invention relates to a kind of compound method of pattern casting superficial layer coating.Be specially adapted to prepare with sodium silicate shell dewaxing casting weight at 5 kilograms of superficial layer coating with interior steel, copper casting.Main points of the present invention are on the basis of existing superficial layer formulation for coating material, add an amount of tung oil, potter's clay and banana oil.The present invention prevents that to improving the quality of casting mold shell cast(ing) surface from producing interlayer, and the corrosion resistance of increase foundry goods etc. all has original effect, thereby can significantly reduce the percent defective of foundry goods, improves productivity effect.
The present invention can be widely used in all kinds of middle-size and small-size smart factories that cast.
Description
The present invention relates to a kind of compound method of precision-investment casting superficial layer coating, particularly about the invention of sodium silicate shell superficial layer coating compound method.
The superficial layer coating of model casting generally is to be mixed together by certain weight ratio by refractory material, binding agent, surfactant and solvent.The performance quality of superficial layer coating is one of key factor of decision shell and casting quality.When preparation superficial layer coating, the kind of casting mold, material, structure and the factors such as weight and environment temperature of foundry goods are often depended in raw-material selection and mutual weight proportion.At present, taking off the superficial layer coating of cured casting weight with sodium silicate shell, the prescription that adopts China Ministry of Astronautics Industry to promote usually the 5 kilograms of cured mould dipping of the confession with interior steel, copper casting usefulness:
Waterglass: 45～50%
Silica flour: 35～40%
Surfactant: 0.45～0.55%
Boric acid: 0.25～0.30%
Water: 10～15%
Wherein, modulus M=3.0～3.4 of waterglass, proportion d=1.27～1.3g/cm
3; Silica flour is No. 9 silica flours of 270 orders (without roasting); Optional higher alcohol ethylene oxide adduct of surfactant (as JFC) or alkyl phenol ethylene oxide adduct (as T * 10 etc.); Be that 100 milliliters, export value directly are 6 millimeters funnel viscometer when measuring with capacity, its viscosity number is between 30～35 seconds, and number range is pressed the temperature adjustment.With the superficial layer coating of this matching method preparation, its weak point is that the sintering strength of coating is not enough; The surface cohesive force is relatively poor, thereby very easily makes the surface of foundry goods produce a large amount of interlayers, accounts for 70% of foundry goods sum, and surperficial interlayer not only can influence following process, and can increase the percent defective of foundry goods, influences productivity effect.
The objective of the invention is to provide a kind of compound method with superficial layer coating of the strong and cohesive force of higher sintering; And for usefulness sodium silicate shell demoulding cast weight 5 kilograms of steel, copper casting with interior different shape special use, generation, minimizing casting wasted product rate to overcome the cast(ing) surface interlayer improve productivity effect.
Implementation of the present invention is: add an amount of tung oil, potter's clay and banana oil on the basis of aforementioned sodium silicate shell superficial layer formulation for coating material, be used for improving the sintering strength and the surperficial cohesive force of coating, guarantee that shell after, the roasting cured through reinforcing, taking off has any surface finish, a clear-cut and the die cavity of sufficient intensity is arranged.The described tung oil tung oil of making a living, its effect are to utilize to give birth to tung oil and have caking property preferably to improve the sintering strength of coating when high temperature; Described potter's clay is general acid potter's clay, and the purpose that adds potter's clay is because of potter's clay also has higher cohesive force except good plasticity is arranged, and can improve the surperficial cementitiousness of coating, prevents getting loose of die cavity inwall; Added banana oil can play infiltration and urge the effect of doing, and also can make surfactant and use.Main points of the present invention are: as the basis, increased living tung oil, potter's clay and three kinds of compositions of banana oil with existing superficial layer formulation for coating material, And has likened certain restriction to the weight that newly adds composition, and its total prescription is:
Waterglass: 45～50%
Silica flour: 35～40%
Surfactant: 0.45～0.55%
Boric acid: 0.25～0.30%
Water: 10～15%
Give birth to tung oil: 0.3～0.35%
Potter's clay: 0.55～0.65%
Banana oil: 0.1～0.2%
In the above-mentioned compound method to the requirement of waterglass, silica flour and surfactant all with existing prescription require identically, viscosity number is (number range is pressed the temperature adjustment) between 22～35 seconds.General when room temperature is lower than 0 ℃, got 30～35 seconds; Room temperature was got 28～30 seconds in the time of 0 ℃～25 ℃; During 25 ℃～35 ℃ of room temperatures, got 22～28 seconds.As long as mentioned component is mixed mutually, get final product during preparation with common mixer or artificial fully the stirring.During use the cured mould of foundry goods is flooded at twice, be 15 minutes ， And successively all are sprinkling upon cured mould coating with 270 orders and 200 order quartz sands surface each blanking time, and then reinforce with reinforced layered slurry.Cured through taking off, just can obtain any surface finish, a clear-cut after drying and have the shell of the die cavity of sufficient intensity.
Contribution of the present invention is to have overcome effectively the interlayer of cast(ing) surface, has reduced the casting wasted product rate, can improve the corrosion resistance of foundry goods simultaneously.If suitably adjust the weight ratio of banana oil, but also the substitution list surface-active agent uses.
Embodiment: (room temperature is 0 ℃～25 ℃)
1) be that the water of 3.0～3.4 waterglass and 10～13% is put into volume and mixed greater than 500 liters open-top receptacle and stir with 45～47% moduluses, measuring its proportion with densimeter then is 1.27～1.3g/cm
3Get final product.
2) get 270 order silica flours (without roasting) 35～38%; Surfactant 0.5%; Boric acid 0.25%; Give birth to tung oil 0.33%; Potter's clay 0.6% and banana oil 0.15% mix with above-mentioned water glass solution, with mixer or manually stir.
3) with being 100 milliliters easily, outlet diameter is the viscosity number that 6 millimeters funnel viscometer is measured coating, and available a spot of silica flour or waterglass are adjusted.When the viscosity number of surveying can use during at 28～30 seconds.
The useful life of above-mentioned superficial layer coating is five days.
Claims (1)
1, a kind of compound method of pattern casting superficial layer coating, the mixture of forming with waterglass, silica flour, surfactant, boric acid and water is as basic coating, feature of the present invention is to add to give birth to tung oil, potter's clay and banana oil in described basic coating, and the weight proportion of its blending constituent is:
Waterglass: 45～50%;
Silica flour: 35～40%;
Surfactant: 0.45～0.55%;
Boric acid: 0.25～0.30%;
Water: 10～15%;
Give birth to tung oil: 0.3～0.35%;
Potter's clay: 0.55～0.65%;
Banana oil: 0.1～0.2%;
Stir after the mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100070 CN1043897A (en) | 1989-01-03 | 1989-01-03 | A kind of compound method of pattern casting superficial layer coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100070 CN1043897A (en) | 1989-01-03 | 1989-01-03 | A kind of compound method of pattern casting superficial layer coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1043897A true CN1043897A (en) | 1990-07-18 |
Family
ID=4853679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100070 Pending CN1043897A (en) | 1989-01-03 | 1989-01-03 | A kind of compound method of pattern casting superficial layer coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043897A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319668C (en) * | 2005-09-16 | 2007-06-06 | 海南三箭科技开发有限公司 | Cast powder for casting high melting point metal and its usage |
| CN101412073B (en) * | 2008-11-25 | 2010-04-21 | 李德全 | Special paint for lost foam casting |
| CN102794386A (en) * | 2011-05-25 | 2012-11-28 | 宁波吉威熔模铸造有限公司 | Investment casting type shell fabric material |
| CN102806304A (en) * | 2011-05-31 | 2012-12-05 | 宁波至诚新材料有限公司 | Shell material for fused mould casting |
-
1989
- 1989-01-03 CN CN 89100070 patent/CN1043897A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319668C (en) * | 2005-09-16 | 2007-06-06 | 海南三箭科技开发有限公司 | Cast powder for casting high melting point metal and its usage |
| CN101412073B (en) * | 2008-11-25 | 2010-04-21 | 李德全 | Special paint for lost foam casting |
| CN102794386A (en) * | 2011-05-25 | 2012-11-28 | 宁波吉威熔模铸造有限公司 | Investment casting type shell fabric material |
| CN102794386B (en) * | 2011-05-25 | 2015-04-08 | 宁波吉威熔模铸造有限公司 | Investment casting type shell fabric material |
| CN102806304A (en) * | 2011-05-31 | 2012-12-05 | 宁波至诚新材料有限公司 | Shell material for fused mould casting |
| CN102806304B (en) * | 2011-05-31 | 2015-05-06 | 宁波至诚新材料有限公司 | Shell material for fused mould casting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105964891B (en) | A kind of phosphate inorganic adhesive sand with high fluidity and preparation method thereof | |
| KR20180131538A (en) | Curing agent for casting water glass and its manufacturing method and use | |
| CN1050827C (en) | Molded article | |
| CN106478030B (en) | Mattess cement-base wear-resistant material and preparation method thereof of nickel slag preparation | |
| CN110498634B (en) | Graphene water dispersion, graphene concrete and preparation method thereof | |
| CN110744031B (en) | Metal ceramic wear-resistant material of three-dimensional network ceramic framework and preparation method thereof | |
| CN110078438A (en) | A kind of polypropylene fiber concrete and preparation method thereof | |
| CN104073673A (en) | Preparation method of ceramic reinforced metal-based composite material | |
| CN1043897A (en) | A kind of compound method of pattern casting superficial layer coating | |
| CN103978152A (en) | Paint for centrifugal-type rollers | |
| US4226626A (en) | Binder composition containing alcohol | |
| CN101314824B (en) | Method for producing metal-based composite material | |
| CN102794400A (en) | Method for indirectly manufacturing low-melting-point alloy mold | |
| CN101786843B (en) | Novel oversize burning-free mullite bedding brick | |
| US2827386A (en) | Method of manufacturing concrete | |
| CN111761028A (en) | Method for manufacturing formwork through lock key investment casting | |
| CN109986021A (en) | A kind of precoated sand and preparation method thereof | |
| CN110526655A (en) | A kind of cement-based self-leveling Wear-resisting terrace material and preparation method thereof of Modified Nickel slag preparation | |
| CN101143933B (en) | Solid epoxy plastic plate and producing method thereof | |
| RU2131856C1 (en) | Concrete mix and method of its preparation | |
| CN108017389A (en) | A kind of mould ceramic material | |
| CN117623703A (en) | Method for preparing clean slurry by using waste slurry of stirring station | |
| GB2040295A (en) | Molding sand mixture for the manufacture of molds and cores | |
| SU863141A1 (en) | Suspension for producing casting ceramic moulds made with use of investment patterns | |
| SU1435365A1 (en) | Self-hardening sand for making moulds and cores |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |