CN105728649A - Casting process of iron casting - Google Patents
Casting process of iron casting Download PDFInfo
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- CN105728649A CN105728649A CN201410753900.3A CN201410753900A CN105728649A CN 105728649 A CN105728649 A CN 105728649A CN 201410753900 A CN201410753900 A CN 201410753900A CN 105728649 A CN105728649 A CN 105728649A
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- iron
- resin sand
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- casting
- sand
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Abstract
The invention discloses a casting process of an iron casting. The casting process comprises the following preparation steps of resin sand preparation, modeling, demolding, coating, casting and cooling, and the finished product is prepared through the six steps. The casting process is obtained by improving a shell molding casting method. The step of coating is used for treatment, so that the finally-obtained finished product is not prone to generating burrs, the technological process is simple, final resin sand can be collected for standby application, and environmental pollution is reduced.
Description
Technical field
The present invention relates to casting iron field, be specifically related to a kind of iron castings casting technique.
Background technology
Progress along with science and technology, metal casting technique has obtained significant progress, define the practical foundry engieering being representative with Negative casting of EPC, shell moulding casting, investment casting technique etc., at present due to the convenience of shell moulding casting, Practical Performance, general producer adopts in this way, but the product produced in this technique has burr to be occurred, it addition, this technique is also comparatively laborious.
Summary of the invention
It is an object of the invention to provide a kind of iron castings casting technique, described iron castings casting technique technological process is simple, and the product produced will not have burr to occur.
For achieving the above object, the technical solution used in the present invention is: a kind of iron castings casting technique, and its preparation process is as follows:
1) preparation of resin sand: adopt sea sand to mix composition with resin, firming agent by 100:1.5～2:0.5～1, prepare resin sand；
2) moulding: the resin sand that above-mentioned steps prepares is heated and sends into the target product shape having been loaded with casting and prepare in metal pattern iron flask, then heat metal pattern, make resin sand at one layer of resin sand formwork of described metal pattern surface adhesion；
3) demoulding: the metal pattern being stained with resin sand formwork is heated solidification 1～2min, then carries out the demoulding, cooling, then obtains target product shell mould；
4) brush: be sent in stream machine by the shell mould after the demoulding and its surface carries out brushing process, the Baume degrees brushing the coating selected is 40～50, and is wherein added with ethanol；
5) casting: by after brushing shell mould send into sandbox having boxing connected vacuum machine, open vacuum machine and sandbox taken out pressure, maintain pressure in sandbox and under vacuum conditions, be subsequently adding molten iron and carry out casting process；
6) cooling: the iron flask after having cast at room temperature is cooled down, then raps the resin sand in iron flask and remove resin sand therein, obtaining finished iron foundry goods.
Further, described step 1) in the clay content of sea sand less than 1%, moisture is less than 1%, and the order number of sea sand is 30～50 orders.
Further, described resin is furane resins.
Further, described firming agent is sulfonic acid.
Further, described step 2) in heating-up temperature be 150～200 DEG C.
Further, described step 3) in heating-up temperature be 250～300 DEG C.
Further, described step 4) in ethanol account for the 1～2% of gross mass.
Further, described step 4) and 5) between be provided with a standing step, the shell mould after brush is placed on indoor standing 5～10min.
Beneficial effect: present invention application brushing step processes so that the finished product finally obtained is not easy burr occur, technological process is simple, and last resin sand can also collect stand-by, decreases environmental pollution.
Detailed description of the invention
Embodiment 1
A kind of iron castings casting technique, its preparation process is as follows:
1) preparation of resin sand: adopting sea sand to mix composition with furane resins, sulfonic acid by 100:1.5:0.5, prepare resin sand, the clay content of the sea sand wherein selected is less than 1%, and moisture is less than 1%, and the order number of sea sand is 50 orders；
2) moulding: the resin sand that above-mentioned steps prepares is heated and sends into the target product shape having been loaded with casting and prepare in metal pattern iron flask, then metal pattern is heated, making resin sand at one layer of resin sand formwork of described metal pattern surface adhesion, above-mentioned heating-up temperature is 150 DEG C；
3) demoulding: being heated the metal pattern being stained with resin sand formwork solidifying 1min, then carry out the demoulding, cooling, then obtain target product shell mould, above-mentioned heating-up temperature is 250 DEG C；
4) brush: be sent in stream machine by the shell mould after the demoulding and its surface carries out brushing process, the Baume degrees brushing the coating selected is 40, and is wherein added with ethanol, and ethanol accounts for the 1～2% of gross mass；
5) casting: by after brushing shell mould send into sandbox having boxing connected vacuum machine, open vacuum machine and sandbox taken out pressure, maintain pressure in sandbox and under vacuum conditions, be subsequently adding molten iron and carry out casting process；
6) stand: the shell mould after brush is placed on indoor standing 5min；
7) cooling: the iron flask after having cast at room temperature is cooled down, then raps the resin sand in iron flask and remove resin sand therein, obtaining finished iron foundry goods.
Embodiment 2
A kind of iron castings casting technique, its preparation process is as follows:
1) preparation of resin sand: adopting sea sand to mix composition with furane resins, sulfonic acid by 100:1.75:0.75, prepare resin sand, the clay content of the sea sand wherein selected is less than 1%, and moisture is less than 1%, and the order number of sea sand is 40 orders；
2) moulding: the resin sand that above-mentioned steps prepares is heated and sends into the target product shape having been loaded with casting and prepare in metal pattern iron flask, then metal pattern is heated, making resin sand at one layer of resin sand formwork of described metal pattern surface adhesion, above-mentioned heating-up temperature is 175 DEG C；
3) demoulding: being heated the metal pattern being stained with resin sand formwork solidifying 1.5min, then carry out the demoulding, cooling, then obtain target product shell mould, above-mentioned heating-up temperature is 275 DEG C；
4) brush: be sent in stream machine by the shell mould after the demoulding and its surface carries out brushing process, the Baume degrees brushing the coating selected is 45, and is wherein added with ethanol, and ethanol accounts for the 1～2% of gross mass；
5) casting: by after brushing shell mould send into sandbox having boxing connected vacuum machine, open vacuum machine and sandbox taken out pressure, maintain pressure in sandbox and under vacuum conditions, be subsequently adding molten iron and carry out casting process；
6) stand: the shell mould after brush is placed on indoor standing 7.5min；
7) cooling: the iron flask after having cast at room temperature is cooled down, then raps the resin sand in iron flask and remove resin sand therein, obtaining finished iron foundry goods.
Embodiment 3
A kind of iron castings casting technique, its preparation process is as follows:
1) preparation of resin sand: adopting sea sand to mix composition with furane resins, sulfonic acid by 100:2:1, prepare resin sand, the clay content of the sea sand wherein selected is less than 1%, and moisture is less than 1%, and the order number of sea sand is 30 orders；
2) moulding: the resin sand that above-mentioned steps prepares is heated and sends into the target product shape having been loaded with casting and prepare in metal pattern iron flask, then metal pattern is heated, making resin sand at one layer of resin sand formwork of described metal pattern surface adhesion, above-mentioned heating-up temperature is 200 DEG C；
3) demoulding: being heated the metal pattern being stained with resin sand formwork solidifying 2min, then carry out the demoulding, cooling, then obtain target product shell mould, above-mentioned heating-up temperature is 300 DEG C；
4) brush: be sent in stream machine by the shell mould after the demoulding and its surface carries out brushing process, the Baume degrees brushing the coating selected is 50, and is wherein added with ethanol, and ethanol accounts for the 1～2% of gross mass；
5) casting: by after brushing shell mould send into sandbox having boxing connected vacuum machine, open vacuum machine and sandbox taken out pressure, maintain pressure in sandbox and under vacuum conditions, be subsequently adding molten iron and carry out casting process；
6) stand: the shell mould after brush is placed on indoor standing 10min；
7) cooling: the iron flask after having cast at room temperature is cooled down, then raps the resin sand in iron flask and remove resin sand therein, obtaining finished iron foundry goods.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the spirit and scope of the present invention is defined.Under the premise without departing from design concept of the present invention, various modification that technical scheme is made by this area ordinary person and improvement, protection scope of the present invention all should be dropped into.
Claims (9)
1. an iron castings casting technique, it is characterised in that its preparation process is as follows:
1) preparation of resin sand: adopt sea sand to mix composition with resin, firming agent by 100:1.5～2:0.5～1, prepare resin sand；
2) moulding: the resin sand that above-mentioned steps prepares is heated and sends into the target product shape having been loaded with casting and prepare in metal pattern iron flask, then heat metal pattern, make resin sand at one layer of resin sand formwork of described metal pattern surface adhesion；
3) demoulding: the metal pattern being stained with resin sand formwork is heated solidification 1～2min, then carries out the demoulding, cooling, then obtains target product shell mould；
4) brush: be sent in stream machine by the shell mould after the demoulding and its surface carries out brushing process, the Baume degrees brushing the coating selected is 40～50, and is wherein added with ethanol；
5) casting: by after brushing shell mould send into sandbox having boxing connected vacuum machine, open vacuum machine and sandbox taken out pressure, maintain pressure in sandbox and under vacuum conditions, be subsequently adding molten iron and carry out casting process；
6) cooling: the iron flask after having cast at room temperature is cooled down, then raps the resin sand in iron flask and remove resin sand therein, obtaining finished iron foundry goods.
2. a kind of iron castings casting technique according to claim 1, it is characterised in that described step 1) in the clay content of sea sand less than 1%, moisture is less than 1%, and the order number of sea sand is 30～50 orders.
3. a kind of iron castings casting technique according to claim 1, it is characterised in that described resin is furane resins.
4. a kind of iron castings casting technique according to claim 1, it is characterised in that described firming agent is sulfonic acid.
5. a kind of iron castings casting technique according to claim 1, it is characterised in that described step 2) in heating-up temperature be 150～200 DEG C.
6. a kind of iron castings casting technique according to claim 1, it is characterised in that described step 3) in heating-up temperature be 250～300 DEG C.
7. a kind of iron castings casting technique according to claim 1, it is characterised in that described step 4) in ethanol account for the 1～2% of gross mass.
8. a kind of iron castings casting technique according to claim 1, it is characterised in that described step 4) with 5) between be provided with a standing step, the shell mould after brush is placed on indoor standing 5～10min.
9. a kind of iron castings casting technique according to claim 1, it is characterised in that described step 6) in the resin sand of removing collect stand-by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753900.3A CN105728649A (en) | 2014-12-10 | 2014-12-10 | Casting process of iron casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753900.3A CN105728649A (en) | 2014-12-10 | 2014-12-10 | Casting process of iron casting |
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| Publication Number | Publication Date |
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| CN105728649A true CN105728649A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410753900.3A Pending CN105728649A (en) | 2014-12-10 | 2014-12-10 | Casting process of iron casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893372A (en) * | 2020-08-10 | 2020-11-06 | 安徽恒升铸业有限公司 | As-cast production process of low-temperature impact toughness nodular cast iron |
| CN113953461A (en) * | 2021-11-03 | 2022-01-21 | 上海艾诺特殊钢铸造有限公司 | Process for casting screwed pipe of paper machine |
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| US20080105996A1 (en) * | 2006-11-07 | 2008-05-08 | Ford Motor Company | Process for Making Reusable Tooling |
| CN101509667A (en) * | 2009-03-09 | 2009-08-19 | 上海市机械制造工艺研究所有限公司 | Grate production process for steel mill sintering apparatus |
| CN101780537A (en) * | 2009-12-28 | 2010-07-21 | 临沂蒙凌铸钢有限公司 | Method for casting low-alloy cast steel automobile axle housing through V-process technology |
| CN102294434A (en) * | 2011-08-05 | 2011-12-28 | 谌征 | Composite molding casting process |
| CN102294461A (en) * | 2011-09-09 | 2011-12-28 | 西峡县众德汽车部件有限公司 | Method for producing nodular cast iron automobile differential shell through vacuum (V) casting and V mould |
| CN103212667A (en) * | 2013-03-26 | 2013-07-24 | 山东蒙凌工程机械股份有限公司 | Production process for casting gearbox housing by using V method, and V-method mold |
| CN103920852A (en) * | 2014-04-30 | 2014-07-16 | 三明市毅君机械铸造有限公司 | Precision casting process of large casting |
-
2014
- 2014-12-10 CN CN201410753900.3A patent/CN105728649A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105996A1 (en) * | 2006-11-07 | 2008-05-08 | Ford Motor Company | Process for Making Reusable Tooling |
| CN101509667A (en) * | 2009-03-09 | 2009-08-19 | 上海市机械制造工艺研究所有限公司 | Grate production process for steel mill sintering apparatus |
| CN101780537A (en) * | 2009-12-28 | 2010-07-21 | 临沂蒙凌铸钢有限公司 | Method for casting low-alloy cast steel automobile axle housing through V-process technology |
| CN102294434A (en) * | 2011-08-05 | 2011-12-28 | 谌征 | Composite molding casting process |
| CN102294461A (en) * | 2011-09-09 | 2011-12-28 | 西峡县众德汽车部件有限公司 | Method for producing nodular cast iron automobile differential shell through vacuum (V) casting and V mould |
| CN103212667A (en) * | 2013-03-26 | 2013-07-24 | 山东蒙凌工程机械股份有限公司 | Production process for casting gearbox housing by using V method, and V-method mold |
| CN103920852A (en) * | 2014-04-30 | 2014-07-16 | 三明市毅君机械铸造有限公司 | Precision casting process of large casting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893372A (en) * | 2020-08-10 | 2020-11-06 | 安徽恒升铸业有限公司 | As-cast production process of low-temperature impact toughness nodular cast iron |
| CN113953461A (en) * | 2021-11-03 | 2022-01-21 | 上海艾诺特殊钢铸造有限公司 | Process for casting screwed pipe of paper machine |
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Application publication date: 20160706 |