CN102873261A - Lost foam coating and preparation method thereof - Google Patents
Lost foam coating and preparation method thereof Download PDFInfo
- Publication number
- CN102873261A CN102873261A CN2012103195765A CN201210319576A CN102873261A CN 102873261 A CN102873261 A CN 102873261A CN 2012103195765 A CN2012103195765 A CN 2012103195765A CN 201210319576 A CN201210319576 A CN 201210319576A CN 102873261 A CN102873261 A CN 102873261A
- Authority
- CN
- China
- Prior art keywords
- parts
- coating
- sodium
- water
- polyvinyl acetate
- 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.)
- Granted
Links
Abstract
The invention relates to a lost foam coating which comprises the following components in part by weight: 30-40 parts of mullite powder, 10-20 parts of quartz powder, 25-35 parts of bauxite, 1-3 parts of bentonite, 2-3 parts of silica sol, 3-7 parts of polyvinyl acetate, 0.3-0.7 part of sodium carboxymethyl cellulose, 0.1-0.5 part of sodium alkyl benzene sulfonate,0.1-0.5 part of sodium sulfate, 0.1-0.5 part of n-caprylic alcohol, 0.1-0.5 part of fatty alcohol polyoxyethylene ether, and 110 parts of water. The invention further discloses a preparation method of the coating. The coating prepared according to the invention has the advantages of good suspension property, high strength, uniformity in coating, good leveling property, finish surface, no bubble, no crack and the like; the viscosity variation of the coating is determined according to the needs of a user; different coating thicknesses can be realized with different viscosities; and the coating is high in strength an has no defects of holes and crack after being dried.
Description
Technical field
The present invention relates to casting field, particularly the Technology of EPC field.
Background technology
Lost foam casting (claiming again cavityless casting) is that the bubbles model bonding similar to the casting dimension shape is combined into model cluster, after brushing fireproof coating and oven dry, be embedded in vibration molding in the dried quartz sand, under negative pressure, pour into a mould, make the model gasification, liquid metals occupies modal position, solidifies the rear novel casting method that forms foundry goods of cooling.
Compare with the conventional cast technology, lost foam casting has following characteristics: 1. casting quality is good, and cost is low; 2. material is not limit, and size is all suitable; 3. dimensional accuracy is high, and any surface finish reduces the cleaning work amount; 4. internal flaw greatly reduces, dense structure; 5. can realize extensive, production in enormous quantities, can greatly improve operating environment, reduce labour intensity, reduce energy resource consumption.
Although lost foam casting process is comparatively fast developed at present, coating technology does not also reach desirable requirement.Directly affect the quality of foundry goods because of coating property, coating contacts except isolating metal liquid and the direct of molding sand, prevents that foundry goods from producing outside penetration and the chemical scab, also has an important function: form and keep the foundry goods die cavity.So must have higher normal temperature strength and elevated temperature strength, and suitable hot permeability will be arranged.
Yet the quality of coating also has the shortcoming of each side at present, and not high such as normal temperature strength, the extruding that is subject to molding sand during moulding tends to produce local deformation, so that cast foundry goods out becomes waste product.Perhaps elevated temperature strength is low, occur during casting that the foundry goods die cavity subsides or coating peel off also can so that foundry goods scrap.Do not have in addition suitable hot permeability, too high ventilative meeting causes the die cavity probability that subsides to increase, and crosses low-permeable and can cause foundry goods to produce the defectives such as pore, elephant skin.
Summary of the invention
For the existing defective of prior art, the new coating of the characteristics such as one of purpose of the present invention is to provide a kind of and has that suspension is good, intensity is high, coating is even, good leveling property, any surface finish, still, flawless, and the preparation method of described coating further is provided.
The invention provides a kind of lost foam paint, comprise following components by weight percent: 35 parts of mullite powders, 15 parts of silica flours, 30 parts of bauxites, 2 parts of bentonites, 2.5 parts of Ludox, 5 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.3 part of sodium alkyl benzene sulfonate, 0.3 part in sodium sulphate, 0.3 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
In one embodiment of the invention, the components by weight percent of described lost foam paint is as follows: 30 parts of mullite powders, 20 parts of silica flours, 30 parts of bauxites, 1 part of bentonite, 3 parts of Ludox, 3 parts of polyvinyl acetate, 0.7 part of sodium carboxymethylcellulose, 0.1 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.2 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
In another embodiment of the present invention, the components by weight percent of described lost foam paint is as follows: 30 parts of mullite powders, 20 parts of silica flours, 30 parts of bauxites, 1 part of bentonite, 3 parts of Ludox, 3 parts of polyvinyl acetate, 0.7 part of sodium carboxymethylcellulose, 0.1 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.2 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
In another embodiment of the present invention, the components by weight percent of described lost foam paint is as follows: 40 parts of order mullite powders, 15 parts of silica flours, 25 parts of bauxites, 3 parts of bentonites, 2 parts of Ludox, 5 parts of polyvinyl acetate, 0.3 part of sodium carboxymethylcellulose, 0.2 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.1 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
In another embodiment of the present invention, the components by weight percent of described lost foam paint is as follows: 40 parts of mullite powders, 10 parts of silica flours, 35 parts of bauxites, 2 parts of bentonites, 2.5 parts of Ludox, 7 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.5 part of sodium alkyl benzene sulfonate, 0.1 part in sodium sulphate, 0.5 part of n-octyl alcohol, 0.5 part of AEO, 110 parts in water.
The present invention also provides a kind of preparation method of lost foam paint, may further comprise the steps:
1) bentonite is added 20 parts of water, stir into bentonite slurry; 2) with mullite powder, silica flour, bauxite stirs in milling apparatus, makes the refractory powder base-material; 3) in base-material, add 70 parts water, so that base-material is moistening and stir and open; Simultaneously Ludox, polyvinyl acetate, sodium carboxymethylcellulose, sodium alkyl benzene sulfonate, sodium sulphate, n-octyl alcohol, AEO are added 20 parts of water, be mixed with the aqueous solution; 4) bentonite slurry, refractory powder base-material are added the above-mentioned aqueous solution, the mixed coating of making under constantly stirring.
Further, the agitating mode of described step 1) was specially: with the rotating speed high-speed stirred more than the 1000rpm 6 hours.
Further, the agitating mode of described step 4) is specially: after 1 hour, kept the following rotating speed stirring at low speed of 600rpm 10 hours with the rotating speed high-speed stirred more than the 1000rpm.
The coating that the present invention prepares out, have that suspension is good, intensity is high, coating is even, the advantage such as good leveling property, any surface finish, still, flawless, the variation of coating viscosity is looked the user and need to be determined, different viscosities can obtain different coating thickness, intensity is high after the coating drying, and coating is without cavity, crack defect.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
One) raw material
35 parts of 150 order mullite powders, 15 parts of 150 order silica flours, 30 parts of 200 order bauxites, 2 parts of bentonites, 2.5 parts of Ludox, 5 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.3 part of sodium alkyl benzene sulfonate, 0.3 part in sodium sulphate, 0.3 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
Two) preparation:
1) 2 parts of bentonites add 20 parts of water, and high-speed stirred became bentonite slurry in 6 hours;
2) 35 parts of mullite powders, 15 parts of silica flours, 30 parts of bauxites stir in milling apparatus, make the refractory powder base-material;
3) then add 70 parts water in base-material, so that base-material is moistening and stir and open; Simultaneously 2.5 parts of Ludox, 5 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.3 part of sodium alkyl benzene sulfonate, 0.3 part in sodium sulphate, 0.3 part of n-octyl alcohol, 20 parts of water of 0.3 part of adding of AEO are mixed with the aqueous solution;
4) bentonite slurry, refractory powder base-material are added the above-mentioned aqueous solution, the mixed coating of making under constantly stirring.
Embodiment 2
One) raw material
30 parts of 200 order mullite powders, 20 parts of 100 order silica flours, 30 parts of 320 order bauxites, 1 part of bentonite, 3 parts of Ludox, 3 parts of polyvinyl acetate, 0.7 part of sodium carboxymethylcellulose, 0.1 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.2 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
Two) preparation:
1) 1 part of bentonite adds 20 parts of water, and high-speed stirred became bentonite slurry in 6 hours;
2) 30 parts of mullite powders, 20 parts of silica flours, 30 parts of bauxites stir in milling apparatus, make the refractory powder base-material;
3) then add 70 parts water in base-material, so that base-material is moistening and stir and open; Simultaneously 3 parts of Ludox, 3 parts of polyvinyl acetate, 0.7 part of sodium carboxymethylcellulose, 0.1 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.2 part of n-octyl alcohol, 20 parts of water of 0.3 part of adding of AEO are mixed with the aqueous solution;
4) bentonite slurry, refractory powder base-material are added the above-mentioned aqueous solution, the mixed coating of making under constantly stirring.
Embodiment 3
One) raw material
40 parts of 180 order mullite powders, 15 parts of 150 order silica flours, 25 parts of 200 order bauxites, 3 parts of bentonites, 2 parts of Ludox, 5 parts of polyvinyl acetate, 0.3 part of sodium carboxymethylcellulose, 0.2 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.1 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
Two) preparation:
1) 3 parts of bentonites add 20 parts of water, and high-speed stirred became bentonite slurry in 6 hours;
2) 40 parts of mullite powders, 15 parts of silica flours, 25 parts of bauxites stir in milling apparatus, make the refractory powder base-material;
3) then add 70 parts water in base-material, so that base-material is moistening and stir and open; Simultaneously 2 parts of Ludox, 5 parts of polyvinyl acetate, 0.3 part of sodium carboxymethylcellulose, 0.2 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.1 part of n-octyl alcohol, 20 parts of water of 0.3 part of adding of AEO are mixed with the aqueous solution;
4) bentonite slurry, refractory powder base-material are added the above-mentioned aqueous solution, the mixed coating of making under constantly stirring.
Embodiment 4
One) raw material
40 parts of 200 order mullite powders, 10 parts of 120 order silica flours, 35 parts of 260 order bauxites, 2 parts of bentonites, 2.5 parts of Ludox, 7 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.5 part of sodium alkyl benzene sulfonate, 0.1 part in sodium sulphate, 0.5 part of n-octyl alcohol, 0.5 part of AEO, 110 parts in water.
Two) preparation:
1) 2 parts of bentonites add 20 parts of water, and high-speed stirred became bentonite slurry in 6 hours;
2) 40 parts of mullite powders, 10 parts of silica flours, 35 parts of bauxites stir in milling apparatus, make the refractory powder base-material;
3) then add 70 parts water in base-material, so that base-material is moistening and stir and open; Simultaneously 2.5 parts of Ludox, 7 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.5 part of sodium alkyl benzene sulfonate, 0.1 part in sodium sulphate, 0.5 part of n-octyl alcohol, 20 parts of water of 0.5 part of adding of AEO are mixed with the aqueous solution;
4) bentonite slurry, refractory powder base-material are added the above-mentioned aqueous solution, the mixed coating of making under constantly stirring.
After tested, each performance indications of the lost foam paint for preparing of said method are as shown in table 1.
Table 1
Embodiment 5
Use embodiment 1 ~ 4 prepared lost foam paint to carry out foundry goods according to following technique.
Extension is coated with: the evaporative pattern apperance at first immerses coating, the dry processing after taking out.Can hang according to the foundry goods situation and to be coated with the repetition said process 2 ~ 5 times.Gas forming amount when pouring into a mould for reducing guarantees casting quality, must dry after foam plastics mould is coated with and coats, guarantee to make enough drying times coating oven dry, baking thoroughly, temperature is controlled at 40 degree, 2 ~ 8 hours time, use in case of necessity microwave drying dry, to accelerate dry run.
Casting: then model is placed to fill out in the sandbox and do sand, shake consolidation, and covered with plastic film is to vacuumizing in the sandbox on sandbox, after the casting, evaporative pattern gasifies, and molten metal is filled into, takes out foundry goods after cooling.
Effect: satisfying under due normal temperature and the elevated temperature strength, the advantages such as lost foam paint has that suspension is good, intensity is high, coating is even, good leveling property, any surface finish, still, flawless, the variation of coating viscosity is looked the user and need to be determined, different viscosities can obtain different coating thickness, intensity is high after the coating drying, and coating is without cavity, crack defect.
The above is preferred embodiment of the present invention only, is not to limit practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (8)
1. lost foam paint comprises following components by weight percent:
Mullite powder 30-40 part, silica flour 10-20 part, bauxite 25-35 part, bentonite 1-3 part, Ludox 2-3 part, polyvinyl acetate 3-7 part, sodium carboxymethylcellulose 0.3-0.7 part, sodium alkyl benzene sulfonate 0.1-0.5 part, sodium sulphate 0.1-0.5 part, n-octyl alcohol 0.1-0.5 part, AEO 0.1-0.5 part, 110 parts in water.
2. a coating as claimed in claim 1 is characterized in that, comprises following components by weight percent:
35 parts of mullite powders, 15 parts of silica flours, 30 parts of bauxites, 2 parts of bentonites, 2.5 parts of Ludox, 5 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.3 part of sodium alkyl benzene sulfonate, 0.3 part in sodium sulphate, 0.3 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
3. a coating as claimed in claim 1 is characterized in that, comprises following components by weight percent:
30 parts of mullite powders, 20 parts of silica flours, 30 parts of bauxites, 1 part of bentonite, 3 parts of Ludox, 3 parts of polyvinyl acetate, 0.7 part of sodium carboxymethylcellulose, 0.1 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.2 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
4. a coating as claimed in claim 1 is characterized in that, comprises following components by weight percent:
40 parts of mullite powders, 15 parts of silica flours, 25 parts of bauxites, 3 parts of bentonites, 2 parts of Ludox, 5 parts of polyvinyl acetate, 0.3 part of sodium carboxymethylcellulose, 0.2 part of sodium alkyl benzene sulfonate, 0.5 part in sodium sulphate, 0.1 part of n-octyl alcohol, 0.3 part of AEO, 110 parts in water.
5. a coating as claimed in claim 1 is characterized in that, comprises following components by weight percent:
40 parts of mullite powders, 10 parts of silica flours, 35 parts of bauxites, 2 parts of bentonites, 2.5 parts of Ludox, 7 parts of polyvinyl acetate, 0.5 part of sodium carboxymethylcellulose, 0.5 part of sodium alkyl benzene sulfonate, 0.1 part in sodium sulphate, 0.5 part of n-octyl alcohol, 0.5 part of AEO, 110 parts in water.
6. preparation method of lost foam paint as claimed in claim 1 comprises:
1) bentonite is added 20 parts of water, stir into bentonite slurry;
2) with mullite powder, silica flour, bauxite stirs in milling apparatus, makes the refractory powder base-material;
3) in base-material, add 70 parts water, so that base-material is moistening and stir and open; Simultaneously Ludox, polyvinyl acetate, sodium carboxymethylcellulose, sodium alkyl benzene sulfonate, sodium sulphate, n-octyl alcohol, AEO are added 20 parts of water, be mixed with the aqueous solution;
4) bentonite slurry, refractory powder base-material are added the above-mentioned aqueous solution, the mixed coating of making under constantly stirring.
7. the preparation method of lost foam paint according to claim 5 is characterized in that, the agitating mode of described step 1) is specially: with the rotating speed high-speed stirred more than the 1000rpm 6 hours.
8. according to claim 6 or the preparation method of 7 described lost foam paints, it is characterized in that, the hybrid mode of described step 4) is specially: after 1 hour, kept the following rotating speed stirring at low speed of 600rpm 10 hours with the rotating speed high-speed stirred more than the 1000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319576.5A CN102873261B (en) | 2012-08-31 | 2012-08-31 | Lost foam coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319576.5A CN102873261B (en) | 2012-08-31 | 2012-08-31 | Lost foam coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102873261A true CN102873261A (en) | 2013-01-16 |
| CN102873261B CN102873261B (en) | 2015-03-04 |
Family
ID=47474899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210319576.5A Active CN102873261B (en) | 2012-08-31 | 2012-08-31 | Lost foam coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102873261B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357814A (en) * | 2013-07-24 | 2013-10-23 | 翼城县福旺铸造实业有限公司 | Lost foam casting-use paint formula and technology method thereof |
| CN105081204A (en) * | 2015-08-28 | 2015-11-25 | 安徽国能亿盛环保科技有限公司 | Preparation method of lost foam coating |
| CN105817571A (en) * | 2016-05-27 | 2016-08-03 | 马鞍山市兴隆铸造有限公司 | Anti-sagging modified quartz-based mica powder full mold paint and preparation method thereof |
| CN107497991A (en) * | 2017-08-21 | 2017-12-22 | 安徽省含山县兴建铸造厂 | A kind of heavy punch piece coating for dispellable mould casting |
| CN108380815A (en) * | 2018-05-24 | 2018-08-10 | 靖江市黎明铸造材料厂 | Lost foam casting hardens ghost coating and preparation method thereof |
| CN112658207A (en) * | 2020-11-25 | 2021-04-16 | 北京星航机电装备有限公司 | Rapid composite casting method of aerospace high-strength aluminum alloy |
| CN114406184A (en) * | 2021-12-31 | 2022-04-29 | 来安县科来兴实业有限责任公司 | Lost foam processing technology of casting mold core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444827A (en) * | 2008-12-24 | 2009-06-03 | 西安理工大学 | Pyrophillite lost foam casting coating and preparation method thereof |
| CN101497104A (en) * | 2009-03-11 | 2009-08-05 | 杨玉光 | Lost foam paint and method for producing the same |
| 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 |
| CN102240776A (en) * | 2011-07-15 | 2011-11-16 | 浙江宸宇重工有限公司 | Coating for lost mould cast steel and manufacture method thereof |
| CN102366816A (en) * | 2011-10-11 | 2012-03-07 | 许立新 | Preparation method of water-based coating for lost foam casting |
-
2012
- 2012-08-31 CN CN201210319576.5A patent/CN102873261B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444827A (en) * | 2008-12-24 | 2009-06-03 | 西安理工大学 | Pyrophillite lost foam casting coating and preparation method thereof |
| CN101497104A (en) * | 2009-03-11 | 2009-08-05 | 杨玉光 | Lost foam paint and method for producing the same |
| 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 |
| CN102240776A (en) * | 2011-07-15 | 2011-11-16 | 浙江宸宇重工有限公司 | Coating for lost mould cast steel and manufacture method thereof |
| CN102366816A (en) * | 2011-10-11 | 2012-03-07 | 许立新 | Preparation method of water-based coating for lost foam casting |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357814A (en) * | 2013-07-24 | 2013-10-23 | 翼城县福旺铸造实业有限公司 | Lost foam casting-use paint formula and technology method thereof |
| CN105081204A (en) * | 2015-08-28 | 2015-11-25 | 安徽国能亿盛环保科技有限公司 | Preparation method of lost foam coating |
| CN105817571A (en) * | 2016-05-27 | 2016-08-03 | 马鞍山市兴隆铸造有限公司 | Anti-sagging modified quartz-based mica powder full mold paint and preparation method thereof |
| CN107497991A (en) * | 2017-08-21 | 2017-12-22 | 安徽省含山县兴建铸造厂 | A kind of heavy punch piece coating for dispellable mould casting |
| CN108380815A (en) * | 2018-05-24 | 2018-08-10 | 靖江市黎明铸造材料厂 | Lost foam casting hardens ghost coating and preparation method thereof |
| CN108380815B (en) * | 2018-05-24 | 2020-06-16 | 靖江市黎明铸造材料厂 | Lost foam casting hardening hollow shell coating and preparation method thereof |
| CN112658207A (en) * | 2020-11-25 | 2021-04-16 | 北京星航机电装备有限公司 | Rapid composite casting method of aerospace high-strength aluminum alloy |
| CN114406184A (en) * | 2021-12-31 | 2022-04-29 | 来安县科来兴实业有限责任公司 | Lost foam processing technology of casting mold core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102873261B (en) | 2015-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102873261B (en) | Lost foam coating and preparation method thereof | |
| CN102836950B (en) | Lost foam coating and preparation method thereof | |
| CN101767184B (en) | Lost foam casting cast iron coating for preventing carbon defects and preparation method thereof | |
| CN102407275B (en) | Expendable pattern casting (EPC) molding shell paint for casting steel and preparation method thereof | |
| CN102847871A (en) | Lost foam paint and preparation method thereof | |
| CN105522112B (en) | Magnesium alloy investment casting high collapsibility ceramic shell and preparation method thereof | |
| CN102836953A (en) | Cast iron lost foam coating and preparation method thereof | |
| CN105522111A (en) | Manufacturing method for ventilation type shell | |
| CN101524739A (en) | Precision-investment casting method | |
| CN102836952A (en) | Resin sand type casting coating and preparation method thereof | |
| CN102836957A (en) | Lost foam coating and preparation method thereof | |
| CN102240776A (en) | Coating for lost mould cast steel and manufacture method thereof | |
| CN102836951B (en) | Aluminum alloy EPC (Expendable Pattern Casting) coating and preparation method thereof | |
| CN103042173A (en) | Negative-pressure airflow expendable pattern based energy-saving and effect-enhancing casting process | |
| CN102873262B (en) | Lost foam coating and preparation method thereof | |
| CN107052243B (en) | A kind of cast iron lost foam casting process | |
| CN102873263B (en) | Lost foam casting technology for sand burning-resistance cast steel | |
| CN111496185A (en) | Production process of lost foam casting | |
| CN102430704B (en) | Preparation method for lost foam casting paint | |
| CN102836956A (en) | Sand adhering prevention cast steel EPC (Expendable Pattern Casting) coating and preparation method thereof | |
| CN104226907A (en) | Lost foam casting process capable of compacting sand further | |
| CN102836954B (en) | Lost foam coating and preparation method thereof | |
| CN106270372B (en) | A kind of cast iron lost foam paint and preparation method thereof | |
| CN114178486B (en) | Shell for improving sand sticking on surface of high-temperature alloy after casting and preparation method thereof | |
| CN103008534A (en) | Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215431 Jiangsu city of Suzhou province Taicang City Liuhe Town Liu Village Patentee after: Suzhou Cobol Machine Tool Group Co., Ltd. Address before: 215431 Jiangsu city of Suzhou province Taicang Liuhe Liu Hutai Road No. 89 New Village Patentee before: Taicang Keboer Precision Casting Co., Ltd. |