CN106334779A - Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof - Google Patents
Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof Download PDFInfo
- Publication number
- CN106334779A CN106334779A CN201610766370.5A CN201610766370A CN106334779A CN 106334779 A CN106334779 A CN 106334779A CN 201610766370 A CN201610766370 A CN 201610766370A CN 106334779 A CN106334779 A CN 106334779A
- Authority
- CN
- China
- Prior art keywords
- powder
- isopropanol
- thermal shock
- shock resistance
- preparation
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses lost foam casting isopropanol-based paint with high thermal shock resistance. As for the paint, an isopropanol-water combined system with high stability and moderate volatilization and combustion speeds is adopted as a solvent carrier, an aluminum oxide-organobentonite/polyethylene glycol sol system is applied in cooperation, an acrylate emulsion serves as a binding agent, and calcium hexaluminate powder, fused alumina powder and cordierite powder are mixed to serve as a heat-insulating refractory aggregate. The product obtained by compounding all the raw materials effectively overcomes the defects of traditional water-based or alcohol-based paint and has excellent coating performance and thermal shock resistance. A high-stability, heat-preserving and air-permeable coating can be formed on the surface of a mould, and precision and quality of castings are effectively improved.
Description
Technical field
The present invention relates to lost foam paint technical field, the dispellable mould casting isopropanol of more particularly, to a kind of highly heatproof and shockproof
Base coating and preparation method thereof.
Background technology
Lost foam casting be foam mould adopt bindless dry sand combine vacuum pumping technology cavityless casting, be by with
The similar bubbles model bonding of casting dimension shape is combined into model cluster, brush coating after drying, and is embedded in drystone sand and shakes
Dynamic moulding, pours into a mould under negative pressure, so that model is gasified, and liquid metals occupies modal position, forms the new of foundry goods after solidification cooling
Casting method.Technology of EPC has the advantages that prominent than traditional foundry engieering, is presently the most advanced casting
Technique, is referred to as 21 century Green foundry both at home and abroad.
In lost foam casting process actual application, the lost foam paint performance of use is directly connected to the property of foundry goods
Can, the such as defect such as the burning into sand of foundry goods presence, pore, residue all can be improved by improving the performance of coating.In order to improve
The combination property of coating, technical staff attempts traditional coating is carried out performance improvement, wherein " lost foam cast steel alcohol-base paint
Exploitation " literary composition, using isopropanol as carrier solvent, solves some that common methanol-based, ethanol base and water based paint exist
Defect, obtains the foundry goods of high-quality under experimental conditions, but isopropanol easily aoxidizes in atmosphere, increased preservation difficult
Degree, practical application also there be difficulties involved when.
Content of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of dispellable mould casting of highly heatproof and shockproof different
Third alcohol-base paint and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of dispellable mould casting isopropyl alcohol-base paint of highly heatproof and shockproof, this coating is made up of the raw material of following weight portion: six aluminum
Sour calcium powder 4-5, electro-corundum powder 20-30, cordierite powder 12-18, alumina sol 3-5, solid content are the acrylic acid of 20-25%
Ester emulsion 4-5, organobentonite 0.1-0.2, Polyethylene Glycol 0.1-0.2, butyl glycol ether 3-5, thiourea 0.001-0.002, different
Propanol 10-15, deionized water 6-8.
A kind of preparation method of the dispellable mould casting isopropyl alcohol-base paint of described highly heatproof and shockproof is:
(1) first isopropanol, butyl glycol ether, thiourea are mixed homogeneously with the deionization of 3-5 weight portion, be configured to solution for standby；
(2) alumina sol, organobentonite are put in the deionized water of surplus, after sonic oscillation 40-50min, add poly- second
Glycol, stirs hybrid reaction 30-40min, and resulting material is standby；
(3) material that step (2) will be added after calcium hexaluminate powder, electro-corundum powder, cordierite powder mixing and stirring to prepare, stirs
Mix 40-50min, be eventually adding the material that step (1) is prepared, obtain final product after stirring 40-50min.
The lost foam casting coating of present invention preparation is with the isopropanol-water of high stability, moderate volatilization and burning velocity
Compound system, as solvent carrier, is equipped with the sol system of aluminium oxide-organobentonite/Polyethylene Glycol, and with acrylate breast
As bonding agent, as insulating refractory aggregate, various raw materials compound liquid for calcium hexaluminate powder, electro-corundum powder, the mixing of cordierite powder
The product obtaining effectively improves traditional water base or alcohol-base paint defect, has good being coated with property and thermal shock resistance,
The coating of high stability, heat-preservation ventilating can be formed in die surface, effectively raise precision and the quality of foundry goods.
Specific embodiment
A kind of dispellable mould casting isopropyl alcohol-base paint of highly heatproof and shockproof, this coating is made up of the raw material of following weight portion:
Calcium hexaluminate powder 4, electro-corundum powder 20, cordierite powder 12, alumina sol 3, solid content are 20% acrylic acid ester emulsion 4, have
Machine bentonite 0.1, Polyethylene Glycol 0.1, butyl glycol ether 3, thiourea 0.001, isopropanol 10, deionized water 6.
The preparation method of this embodiment coating is:
(1) first isopropanol, butyl glycol ether, thiourea are mixed homogeneously with the deionization of 3 weight portions, be configured to solution for standby；
(2) alumina sol, organobentonite are put in the deionized water of surplus, after sonic oscillation 40min, add poly- second two
Alcohol, stirs hybrid reaction 30min, and resulting material is standby；
(3) material that step (2) will be added after calcium hexaluminate powder, electro-corundum powder, cordierite powder mixing and stirring to prepare, stirs
Mix 40min, be eventually adding the material that step (1) is prepared, obtain final product after stirring 40min.
The coating property test result obtaining is:
Density: 1.22g/mm3；Suspensibility >=92% after 72h；Viscosity: 62mp.s；Thixotroping rate: 15%；Breathability: 22.5cm2.
(kpa.min)-1；Strength of coating: 845.2g/mm.
It is squeegeed onto forming, on foam plastic sample surface, the dope layer that thickness is 0.5mm, subsequent drying is cast after processing
Steel part is poured into a mould, and the steel casting surface obtaining is bright and clean, surface roughness≤ra10.5 μm, no shrinkage cavity, burning into sand.
Claims (2)
1. a kind of dispellable mould casting isopropyl alcohol-base paint of highly heatproof and shockproof is it is characterised in that this coating is by following weight portion
Raw material is made: calcium hexaluminate powder 4-5, electro-corundum powder 20-30, cordierite powder 12-18, alumina sol 3-5, solid content are
The acrylic acid ester emulsion 4-5 of 20-25%, organobentonite 0.1-0.2, Polyethylene Glycol 0.1-0.2, butyl glycol ether 3-5, thiourea
0.001-0.002, isopropanol 10-15, deionized water 6-8.
2. the preparation method of the dispellable mould casting isopropyl alcohol-base paint of a kind of highly heatproof and shockproof as claimed in claim 1, it is special
Levy and be, described preparation method is:
(1) first isopropanol, butyl glycol ether, thiourea are mixed homogeneously with the deionization of 3-5 weight portion, be configured to solution for standby；
(2) alumina sol, organobentonite are put in the deionized water of surplus, after sonic oscillation 40-50min, add poly- second
Glycol, stirs hybrid reaction 30-40min, and resulting material is standby；
(3) material that step (2) will be added after calcium hexaluminate powder, electro-corundum powder, cordierite powder mixing and stirring to prepare, stirs
Mix 40-50min, be eventually adding the material that step (1) is prepared, obtain final product after stirring 40-50min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766370.5A CN106334779A (en) | 2016-08-30 | 2016-08-30 | Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766370.5A CN106334779A (en) | 2016-08-30 | 2016-08-30 | Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106334779A true CN106334779A (en) | 2017-01-18 |
Family
ID=57823908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610766370.5A Withdrawn CN106334779A (en) | 2016-08-30 | 2016-08-30 | Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106334779A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218502A (en) * | 2011-07-15 | 2011-10-19 | 浙江宸宇重工有限公司 | Isopropanol-based coating for lost foam casting steel and production method thereof |
| CN105057571A (en) * | 2015-07-27 | 2015-11-18 | 明光市留香泵业有限公司 | High-thermostability water-based paint containing nanometer wollastonite for lost foam casting and manufacturing method of water-based paint |
| CN105344926A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Precise casting composite primary layer coating for connecting rod |
-
2016
- 2016-08-30 CN CN201610766370.5A patent/CN106334779A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218502A (en) * | 2011-07-15 | 2011-10-19 | 浙江宸宇重工有限公司 | Isopropanol-based coating for lost foam casting steel and production method thereof |
| CN105057571A (en) * | 2015-07-27 | 2015-11-18 | 明光市留香泵业有限公司 | High-thermostability water-based paint containing nanometer wollastonite for lost foam casting and manufacturing method of water-based paint |
| CN105344926A (en) * | 2015-10-26 | 2016-02-24 | 无锡市永亿精密铸造有限公司 | Precise casting composite primary layer coating for connecting rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105522112B (en) | Magnesium alloy investment casting high collapsibility ceramic shell and preparation method thereof | |
| CN103506566B (en) | For the coating and preparation method thereof of lost foam casting | |
| CN102806310B (en) | Metal component casting process | |
| CN102218502A (en) | Isopropanol-based coating for lost foam casting steel and production method thereof | |
| CN106040965A (en) | Molding sand for casting | |
| CN103658508A (en) | Cast steel lost foam coating formula | |
| CN102240776A (en) | Coating for lost mould cast steel and manufacture method thereof | |
| CN102371336B (en) | A kind of Water-based coating for lost foam casting | |
| CN103861998A (en) | Investment casting method | |
| CN107414016A (en) | A kind of cast paint for overlay film sand mold and preparation method thereof | |
| Choi et al. | Application of dual coating process and 3D printing technology in sand mold fabrication | |
| CN106040992A (en) | Casting sand core paint dipping process | |
| CN104073673A (en) | Preparation method of ceramic reinforced metal-based composite material | |
| CN102836951B (en) | Aluminum alloy EPC (Expendable Pattern Casting) coating and preparation method thereof | |
| CN102699273B (en) | Precision casting method for large-scale aluminium alloy impeller | |
| CN111375731B (en) | Integral preparation process of large-scale framework high-temperature titanium alloy casting | |
| CN107987539A (en) | A kind of moltening mold castings complex wax formula | |
| CN108296428A (en) | A kind of dry powder lost foam casting coating | |
| CN106334779A (en) | Lost foam casting isopropanol-based paint with high thermal shock resistance and preparation method thereof | |
| CN106141076A (en) | A kind of nonferrous metal lost foam casting isopropyl alcohol-base paint and preparation method thereof | |
| CN111940694A (en) | Method for manufacturing water-soluble salt core for high-pressure casting | |
| CN103008534A (en) | Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production | |
| CN105728640A (en) | High-strength and high-toughness water-based lost foam coating for magnesium alloy casting and preparation method thereof | |
| CN106141078A (en) | A kind of dispellable mould casting isopropyl alcohol-base paint of the easy demoulding of high-lubricity and preparation method thereof | |
| JP4925289B2 (en) | Method for producing a gypsum mold for casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170118 |