CN103586409A - Fired mold preparation technology - Google Patents
Fired mold preparation technology Download PDFInfo
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- CN103586409A CN103586409A CN201310608847.3A CN201310608847A CN103586409A CN 103586409 A CN103586409 A CN 103586409A CN 201310608847 A CN201310608847 A CN 201310608847A CN 103586409 A CN103586409 A CN 103586409A
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Abstract
The invention relates to a fired mold preparation technology. The fired mold preparation technology comprises three steps including preparation of pattern materials, manufacturing of the fired mold and cooling of the fired mold. According to the fired mold preparation technology, polymerized rosin, modified rosin, paraffin and ethylene-vinyl acetate copolymer are adopted as the pattern materials to prepare the fired mold; the prepared fired mold is bright and clean in the surface, small in the percentage of contraction, and can meet high precision requirement and requirements of large precision castings.
Description
Technical field
The present invention relates to casting field, relate in particular to a kind of fusible pattern preparation technology.
Background technology
Full form casting process belongs to precision casting process, model casting claims again lost-wax casting, refer to fusible material and make apperance, on apperance surface, coated some layers of refractory material are made shell, again apperance fusing is discharged to shell, thereby obtain the casting mold without die joint, because apperance extensively adopts wax material manufacture, therefore model casting is called to lost-wax casting.The quality of fusible pattern quality directly has influence on geometry, dimensional accuracy and the surface roughness of foundry goods, the product of having relatively high expectations for casting accuracy and than relatively large part, must adopt intensity and heat endurance is higher, shrinkage factor is less mould material to prepare fusible pattern, thereby guarantee dimensional accuracy and the surface roughness of fusible pattern.But existing mould material, because shrinkage factor is large, heat endurance is low, can not meet the requirement of required precision height and large-scale precision foundry goods.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, provides that a kind of shrinkage factor is little, heat endurance is high, has certain toughness and flexible fusible pattern preparation technology.
For achieving the above object, the technical solution used in the present invention is: a kind of fusible pattern preparation technology, is characterized in that comprising the following steps:
The first step: configuration mould material, by mould material put into resistance furnace power frequency impression should change wax stove and melt being no more than at 200 ℃ of temperature;
Second step: manufacture fusible pattern, by temperature, be the mould material of the fusing of 70～85 ℃ put into manual semi-automatic insulation wax injector carry out die mould, pressurize 1～3min makes after the moulding of mould material, pass into cooling water, finally add parting compound, by the fusible pattern of moulding from manual isolate semi-automatic insulation wax injector;
The 3rd step: cooling fusible pattern, is placed on mould bases cooling 1h under room temperature by isolated fusible pattern.
Preferably, described mould material constituent and weight ratio thereof are: 15% newtrex, 45% modified rosin, 35% paraffin, 5% ethylene-vinyl acetate copolymer.
Preferably, described parting compound is alcohol: the intermixture that castor oil mass ratio is 1:1.
Preferably, described modified rosin is by being placed on rosin in porcelain crucible fusing at 160 ℃, after adding the additive of 10% triethanolamine and 5% to stir, at 230～240 ℃, reacts after 3～4h, is down to room temperature and obtains.
Preferably, described additive is a kind of in zinc powder, zinc oxide, zinc acetate.
Preferably, in the described first step, the charging sequence of mould material is: first paraffin is put into resistance furnace power frequency impression should change wax stove after being no more than and melting at 200 ℃ of temperature, in whipping process, add ethylene-vinyl acetate copolymer, after fine melt, add again newtrex, after newtrex fusing, finally add modified rosin melt and stir.
Preferably, described second step medium-pressure type temperature is 20～30 ℃.
The invention solves the defect existing in background technology, fusible pattern preparation technology of the present invention, by adopting newtrex, modified rosin, paraffin and ethylene-vinyl acetate copolymer as mould material, the fusible pattern any surface finish of making, shrinkage factor is little, can meet the requirement of required precision height and large-scale precision foundry goods.
The specific embodiment
The present invention is further detailed explanation in conjunction with the embodiments now.
A preparation technology, it comprises the following steps:
The first step: configuration mould material, by mould material put into resistance furnace power frequency impression should change wax stove and melt being no more than at 200 ℃ of temperature;
Second step: manufacture fusible pattern, by temperature, be the mould material of the fusing of 70～85 ℃ put into manual semi-automatic insulation wax injector carry out die mould, pressurize 1～3min makes after the moulding of mould material, pass into cooling water, finally add parting compound, by the fusible pattern of moulding from manual isolate semi-automatic insulation wax injector;
The 3rd step: cooling fusible pattern, is placed on mould bases cooling 1h under room temperature by isolated fusible pattern.
Mould material constituent and weight ratio thereof in the present invention are: 15% newtrex, 45% modified rosin, 35% paraffin, 5% ethylene-vinyl acetate copolymer.
Preferably, parting compound is alcohol: the intermixture that castor oil mass ratio is 1:1.
Further, modified rosin is by being placed on rosin in porcelain crucible fusing at 160 ℃, after adding the additive of 10% triethanolamine and 5% to stir, at 230～240 ℃, reacts after 3～4h, is down to room temperature and obtains.Rosin is carried out to modification, can reduce the acid number of rosin, improve corrosion resistance and heat endurance; Modified rosin is added in mould material, can reduce shrinkage factor, the raising heat endurance of mould material.
Preferably, additive is a kind of in zinc powder, zinc oxide, zinc acetate.
Further, in the first step, the charging sequence of mould material is: first paraffin is put into resistance furnace power frequency impression should change wax stove after being no more than and melting at 200 ℃ of temperature, in whipping process, add ethylene-vinyl acetate copolymer, after fine melt, add again newtrex, after newtrex fusing, finally add modified rosin melt and stir; Second step medium-pressure type temperature is 20～30 ℃.
Embodiment 1:
A preparation technology, it comprises the following steps:
The first step: configuration mould material, by mould material put into resistance furnace power frequency impression should change wax stove and melt being no more than at 200 ℃ of temperature; Mould material constituent and weight ratio thereof are: 15% newtrex, 45% modified rosin, 35% paraffin, 5% ethylene-vinyl acetate copolymer; Modified rosin is by being placed on rosin in porcelain crucible fusing at 160 ℃, after adding the additive of 10% triethanolamine and 5% to stir, at 230～240 ℃, reacts after 3～4h, is down to room temperature and obtains; Additive is a kind of in zinc powder, zinc oxide, zinc acetate; Charging sequence is: first paraffin is put into resistance furnace power frequency impression should change wax stove after being no more than and melting at 200 ℃ of temperature, in whipping process, add ethylene-vinyl acetate copolymer, after fine melt, add again newtrex, after newtrex fusing, finally add modified rosin melt and stir.
Second step: manufacture fusible pattern, by temperature, be the mould material of the fusing of 70～85 ℃ put into manual semi-automatic insulation wax injector carry out die mould, pressurize 1～3min makes after the moulding of mould material, pass into cooling water, finally add parting compound, by the fusible pattern of moulding from manual isolate semi-automatic insulation wax injector; Parting compound is alcohol: the intermixture that castor oil mass ratio is 1:1; This step medium-pressure type temperature is 20～30 ℃.
The 3rd step: cooling fusible pattern, is placed on mould bases cooling 1h under room temperature by isolated fusible pattern.
Fusible pattern preparation technology of the present invention, by adopting newtrex, modified rosin, paraffin and ethylene-vinyl acetate copolymer as mould material, the fusible pattern any surface finish of making, shrinkage factor is little, can meet the requirement of required precision height and large-scale precision foundry goods.
Above foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, related personnel can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on description, must determine technical scope according to claim scope.
Claims (7)
1. a fusible pattern preparation technology, is characterized in that comprising the following steps:
The first step: configuration mould material, by mould material put into resistance furnace power frequency impression should change wax stove and melt being no more than at 200 ℃ of temperature;
Second step: manufacture fusible pattern, by temperature, be the mould material of the fusing of 70～85 ℃ put into manual semi-automatic insulation wax injector carry out die mould, pressurize 1～3min makes after the moulding of mould material, pass into cooling water, finally add parting compound, by the fusible pattern of moulding from manual isolate semi-automatic insulation wax injector;
The 3rd step: cooling fusible pattern, is placed on mould bases cooling 1h under room temperature by isolated fusible pattern.
2. a kind of fusible pattern preparation technology according to claim 1, is characterized in that: described mould material constituent and weight ratio thereof are: 15% newtrex, 45% modified rosin, 35% paraffin, 5% ethylene-vinyl acetate copolymer.
3. a kind of fusible pattern preparation technology according to claim 1, is characterized in that: described parting compound is alcohol: the intermixture that castor oil mass ratio is 1:1.
4. a kind of fusible pattern preparation technology according to claim 2, it is characterized in that: described modified rosin is by being placed on rosin fusing at 160 ℃ in porcelain crucible, after adding the additive of 10% triethanolamine and 5% to stir, at 230～240 ℃, react after 3～4h, be down to room temperature and obtain.
5. a kind of fusible pattern preparation technology according to claim 4, is characterized in that: described additive is a kind of in zinc powder, zinc oxide, zinc acetate.
6. a kind of fusible pattern preparation technology according to claim 5, it is characterized in that: in the described first step, the charging sequence of mould material is: first paraffin is put into resistance furnace power frequency impression should change wax stove after being no more than and melting at 200 ℃ of temperature, in whipping process, add ethylene-vinyl acetate copolymer, after fine melt, add again newtrex, after newtrex fusing, finally add modified rosin melt and stir.
7. a kind of fusible pattern preparation technology according to claim 1, is characterized in that: described second step medium-pressure type temperature is 20～30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310608847.3A CN103586409A (en) | 2013-11-27 | 2013-11-27 | Fired mold preparation technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310608847.3A CN103586409A (en) | 2013-11-27 | 2013-11-27 | Fired mold preparation technology |
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| CN103586409A true CN103586409A (en) | 2014-02-19 |
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| CN201310608847.3A Pending CN103586409A (en) | 2013-11-27 | 2013-11-27 | Fired mold preparation technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889368A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Method for manufacturing front cover of minibus |
| CN104945917A (en) * | 2014-03-27 | 2015-09-30 | 江苏泰尔新材料股份有限公司 | Precision casting wax |
| CN108031792A (en) * | 2018-01-10 | 2018-05-15 | 芜湖市金贸流体科技股份有限公司 | A kind of cured material of silica sol precision casting and the mold making process based on the wax material |
| RU2792535C1 (en) * | 2022-12-15 | 2023-03-22 | федеральное государственное автономное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" | Method for preparing a wax model used for high precision casting on model |
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| CN102690462A (en) * | 2012-05-30 | 2012-09-26 | 中国人民公安大学 | Moulding material for tool marks |
| CN102876054A (en) * | 2012-09-03 | 2013-01-16 | 广西大学 | Packing mold material used in investment precision casting |
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| US4758613A (en) * | 1985-03-26 | 1988-07-19 | Komatsu Haumetto Kabushiki Kaisha | Pattern material used for investment casting |
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| CN101147954A (en) * | 2007-10-29 | 2008-03-26 | 福建省建阳市汽车锻压件厂 | Investment precision casting process for producing automobile I-shaped front shaft |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104945917A (en) * | 2014-03-27 | 2015-09-30 | 江苏泰尔新材料股份有限公司 | Precision casting wax |
| CN104945917B (en) * | 2014-03-27 | 2017-07-18 | 江苏泰尔新材料股份有限公司 | A kind of hot investment casting wax |
| CN104889368A (en) * | 2015-05-27 | 2015-09-09 | 含山县恒翔机械制造有限公司 | Method for manufacturing front cover of minibus |
| CN108031792A (en) * | 2018-01-10 | 2018-05-15 | 芜湖市金贸流体科技股份有限公司 | A kind of cured material of silica sol precision casting and the mold making process based on the wax material |
| RU2792535C1 (en) * | 2022-12-15 | 2023-03-22 | федеральное государственное автономное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" | Method for preparing a wax model used for high precision casting on model |
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Application publication date: 20140219 |
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