CN102658354A - Method for visualization of casing and filling processes - Google Patents
Method for visualization of casing and filling processes Download PDFInfo
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- CN102658354A CN102658354A CN2012101414077A CN201210141407A CN102658354A CN 102658354 A CN102658354 A CN 102658354A CN 2012101414077 A CN2012101414077 A CN 2012101414077A CN 201210141407 A CN201210141407 A CN 201210141407A CN 102658354 A CN102658354 A CN 102658354A
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Abstract
The invention provides a method for visualization of casing and filling processes. According to the main technical scheme provided by the invention, the method comprises the following steps of: carrying out numerical simulation on a filling process of a casting piece by using a computer; then shooting an actual filling process of the casting piece by using a high-temperature camera; combining a simulation result with a shooting result; and correcting the numerical simulation of the casting and filling processes of the casting piece by using an actual shooting result. Based on a corrected result, the defects of the casting piece can be subjected to predicting analysis; the casting process is improved; and the quality of the casting piece is improved. The numerical simulation i and the actual shooting n the filling process are suitable for sand casting of the casting pieces with various sizes. The filling process of the casting piece can be entirely and accurately observed through the combination, so that the casting and filling processes can be visualized. The method provided by the invention has the advantages of being mature in process, simple and convenient for process, and low in cost.
Description
Technical field
The invention belongs to the sand casting field, be specifically related to the observation that casting pouring fills the type flow process.
Background technology
Foundry goods be pouring metal melt in certain casting mold, solidify the cooling form.It is a very complicated process that pouring metal melt fills the type flow process.Different casting moulding systems can cause different metallic liquid cavity filling process, and this will directly influence the quality of foundry goods.The filling order of molten metal in casting mold is related to defectives such as misrun, cold shut, slag inclusion, volume gas with flow regime.The grasp casting pouring fills the type flowing law optimize casting technology, raising casting quality is had important effect.The opaque mold filling process of casting that makes of casting mold is difficult to direct observation.What existing numerical simulation technology can be observed foundry goods indirectly fills the type flow process, but because the uncertainty of parameters for numerical simulation makes numerical simulation result and actual result have deviation.Someone studies and adopts X ray that casting mold is carried out the mobile order of fluoroscopic observation molten metal, but is subject to casting dimension, and cost is high.
Summary of the invention
In order to overcome the above problems, the present invention proposes a kind of casting filling visualization method.Technical scheme of the present invention is to use computer that the cavity filling process of foundry goods is carried out numerical simulation, uses the high temperature camera that the actual cavity filling process of foundry goods is taken then, and analog result is combined with shooting results, realizes the visual of casting filling.
In above-described method, preferred: as to adopt computer that the casting pouring cavity filling process is carried out numerical simulation, observe the flow process of foundry goods molten metal indirectly at die cavity.
In above-described method, preferred: as to adopt the high temperature camera that the actual cavity filling process of foundry goods is taken.When the foundry goods moulding, the high temperature camera is embedded in the sand mold, makes cam lens be exposed to the casting mold cavity inner surface, can bury a plurality of high temperature cameras underground, make its visual field cover whole foundry goods, perhaps aim at the crucial local location of foundry goods.The high temperature camera links to each other with computer, when casting pouring, takes and each liquid metal filling mobility status local or crucial local location of record foundry goods.
In above-described method; Preferably: combining of type situation and numerical simulation filled in the foundry goods part that actual photographed is obtained; Utilize the actual result of taking that the casting pouring numerical simulation during filling mold is proofreaied and correct, can realize casting actual the visual of type of filling through the result after proofreading and correct.The mode of proofreading and correct can be according to the local actual filling time order of taking of foundry goods is revised the parameters for numerical simulation of mold filling process of casting; Improve the numerical simulation of mold filling process of casting, make that numerical simulation result is consistent with actual result or approach actual result.
The invention has the beneficial effects as follows:
Adopt computer that numerical simulation is carried out in the type flow field of filling of foundry goods, the indirect observation casting pouring fills the type situation well.And adopt the high temperature camera to take the flow process of foundry goods molten steel, can intuitively observe the actual type situation of filling of foundry goods truly.The actual cavity filling process logarithm value Simulation result of taking is proofreaied and correct, and then can observe correction back single-casting and fill the type flow field accurately.Whether the result based on after proofreading and correct can misrun, cold shut, volume gas can occur by the forecast analysis foundry goods, and defectives such as slag inclusion are optimized system for casting and pouring, improve the quality of foundry goods.The numerical simulation of cavity filling process and actual photographed all are applicable to the sand casting of various sizes foundry goods, and both combinations can be observed mold filling process of casting in complete and accurate ground, realize the visual of casting filling.Technical maturity in this method, easy and simple to handle, cost is low.
Description of drawings
The shooting sketch map of Fig. 1 mold filling process of casting
Reference numeral: 1, foundry goods; 2, high temperature camera; 3, sand mold; 4, computer
The specific embodiment
Below in conjunction with Fig. 1 the visual preferred implementation process of casting filling mentioned among the present invention is set forth.Concrete steps are following:
The first step adopts computer that foundry goods 1 cast cavity filling process is carried out numerical simulation, observes the flow process of foundry goods 1 molten metal at die cavity indirectly.
Second step; When foundry goods 1 moulding, high temperature camera 2 is embedded in the sand mold, makes camera 2 camera lenses be exposed to the casting mold cavity inner surface, aim at the ingate of foundry goods 1; High temperature camera 2 links to each other with computer 4, when foundry goods 1 cast, takes the liquid metal filling mobility status with record foundry goods 1 ingate.
In the 3rd step, combining of type situation and numerical simulation filled in foundry goods 1 part that actual photographed is obtained, and utilizes the actual result of taking that foundry goods 1 cast numerical simulation during filling mold is proofreaied and correct, and can realize casting actual the visual of type of filling through the result after the correction.The mode of proofreading and correct can be according to the actual filling time order that foundry goods 1 ingate is taken the parameters for numerical simulation of foundry goods 1 cavity filling process to be revised, and makes that numerical simulation result is consistent with actual result or approaches actual result.
Claims (6)
1. a foundry goods fills the type visualization method; It is characterized in that the cavity filling process that uses a computer to foundry goods carries out numerical simulation, uses the high temperature camera that the actual cavity filling process of foundry goods is taken then; Analog result is combined with shooting results, realize the visual of casting filling.
2. fill the type visualization method according to claims 1 described a kind of foundry goods, it is characterized in that, adopt computer that the casting pouring cavity filling process is carried out numerical simulation, observe the flow process of foundry goods molten metal indirectly at die cavity.
3. fill the type visualization method according to claims 1 described a kind of foundry goods, it is characterized in that, adopt the high temperature camera that the actual cavity filling process of foundry goods is taken.
4. take mold filling process of casting according to claims 3 described employing high temperature cameras; It is characterized in that; When the foundry goods moulding, the high temperature camera is embedded in the sand mold, makes cam lens be exposed to the casting mold cavity inner surface, can bury a plurality of high temperature cameras underground; Make its visual field cover whole foundry goods, perhaps aim at the crucial local location of foundry goods.The high temperature camera links to each other with computer, when casting pouring, takes and each liquid metal filling mobility status local or crucial local location of record foundry goods.
5. fill the type visualization method according to claims 1 described a kind of foundry goods; It is characterized in that; The foundry goods part that actual photographed is obtained is filled the type situation and is combined with numerical simulation result; Utilize the actual result of taking that the casting pouring numerical simulation during filling mold is proofreaied and correct, can realize casting actual the visual of type of filling through the result after proofreading and correct.
6. the actual result that 5 described utilizations are taken according to claims is proofreaied and correct the casting pouring numerical simulation during filling mold; It is characterized in that; The mode of proofreading and correct can be according to the local actual filling time order of taking of foundry goods is revised the parameters for numerical simulation of mold filling process of casting; Improve the numerical simulation of mold filling process of casting, make that numerical simulation result is consistent with actual result or approach actual result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101414077A CN102658354A (en) | 2012-05-03 | 2012-05-03 | Method for visualization of casing and filling processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101414077A CN102658354A (en) | 2012-05-03 | 2012-05-03 | Method for visualization of casing and filling processes |
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| CN102658354A true CN102658354A (en) | 2012-09-12 |
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| CN2012101414077A Pending CN102658354A (en) | 2012-05-03 | 2012-05-03 | Method for visualization of casing and filling processes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691882A (en) * | 2013-12-17 | 2014-04-02 | 上海交通大学 | Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy |
| CN104001875A (en) * | 2014-05-12 | 2014-08-27 | 河海大学 | Metal liquid filling type flow regime viewer |
| CN106845007A (en) * | 2017-02-16 | 2017-06-13 | 重庆长安汽车股份有限公司 | A kind of method for lifting high-pressure casting cavity filling process CAE analysis precision |
| CN108256239A (en) * | 2018-01-23 | 2018-07-06 | 华中科技大学 | A kind of Forecasting Methodology suitable for Mold Filling Process cold shut defect |
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| JPH01215452A (en) * | 1988-02-25 | 1989-08-29 | Mazda Motor Corp | Device for controlling die temperature |
| JP2003251443A (en) * | 2002-03-01 | 2003-09-09 | Nisshin Steel Co Ltd | Method and system for controlling flow passage opening/ closing means at occurrence of breakout |
| CN1631579A (en) * | 2004-12-24 | 2005-06-29 | 中国科学院金属研究所 | Visible casting method |
| CN2790638Y (en) * | 2004-12-24 | 2006-06-28 | 中国科学院金属研究所 | Visulized casting real-time observing system |
| CN202024943U (en) * | 2011-02-24 | 2011-11-02 | 中国矿业大学 | Device for physically simulating liquid metal flow under upright centrifuge field |
| CN102389967A (en) * | 2011-10-25 | 2012-03-28 | 岳睿 | Pouring system based on camera and pyrometer control |
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2012
- 2012-05-03 CN CN2012101414077A patent/CN102658354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215452A (en) * | 1988-02-25 | 1989-08-29 | Mazda Motor Corp | Device for controlling die temperature |
| JP2003251443A (en) * | 2002-03-01 | 2003-09-09 | Nisshin Steel Co Ltd | Method and system for controlling flow passage opening/ closing means at occurrence of breakout |
| CN1631579A (en) * | 2004-12-24 | 2005-06-29 | 中国科学院金属研究所 | Visible casting method |
| CN2790638Y (en) * | 2004-12-24 | 2006-06-28 | 中国科学院金属研究所 | Visulized casting real-time observing system |
| CN202024943U (en) * | 2011-02-24 | 2011-11-02 | 中国矿业大学 | Device for physically simulating liquid metal flow under upright centrifuge field |
| CN102389967A (en) * | 2011-10-25 | 2012-03-28 | 岳睿 | Pouring system based on camera and pyrometer control |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691882A (en) * | 2013-12-17 | 2014-04-02 | 上海交通大学 | Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy |
| CN103691882B (en) * | 2013-12-17 | 2015-07-08 | 上海交通大学 | Complicated thin-walled investment casting and method for evaluating casting performance of nickel-based alloy |
| CN104001875A (en) * | 2014-05-12 | 2014-08-27 | 河海大学 | Metal liquid filling type flow regime viewer |
| CN106845007A (en) * | 2017-02-16 | 2017-06-13 | 重庆长安汽车股份有限公司 | A kind of method for lifting high-pressure casting cavity filling process CAE analysis precision |
| CN108256239A (en) * | 2018-01-23 | 2018-07-06 | 华中科技大学 | A kind of Forecasting Methodology suitable for Mold Filling Process cold shut defect |
| CN108256239B (en) * | 2018-01-23 | 2020-07-10 | 华中科技大学 | Prediction method suitable for cold shut defect in casting and mold filling process |
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Application publication date: 20120912 |