CN103170607A - Cast copper mould used for manufacturing giant magnetostrictive alloy bars - Google Patents
Cast copper mould used for manufacturing giant magnetostrictive alloy bars Download PDFInfo
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- CN103170607A CN103170607A CN2013101021301A CN201310102130A CN103170607A CN 103170607 A CN103170607 A CN 103170607A CN 2013101021301 A CN2013101021301 A CN 2013101021301A CN 201310102130 A CN201310102130 A CN 201310102130A CN 103170607 A CN103170607 A CN 103170607A
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Abstract
A cast copper mould used for manufacturing giant magnetostrictive alloy bars is composed of a cooling copper mould, a large base copper mould and cylindrical heat conducting bars. The cooling copper mould is in close fit with the large base copper mould, the heat conducting bars are cylindrical and assembled on two lateral faces of a large base, and the heat conducting bars are asymmetrically distributed so as to facilitate even dissipation of heat. Exhaust vents are formed in the bottom of the large base copper mould. Red copper is adopted as the material for the double layers of the copper moulds and the heat conducting bars. The crystallization cooling speed of alloy ingots can be improved substantially, and therefore the purposes of refining crystalline grains, reducing porosity of alloy structures and improving the alloy ingot structure performance are achieved. Meanwhile, due to the fast cooling speed, a liquid metal unordered phase structure is more likely to be maintained for alloys, not only is the magnetostriction performance greatly improved, but also the crystalline grains can be refined, the crystalline grains are enabled to be even in size, and the overall performance of the alloys is significantly improved.
Description
Technical field
Required casting mould when the present invention relates to a kind of vacuum induction melting method and preparing alloy belongs to the technology of die manufacturing of materials processing engineering field.
Background technology
The melting of giant magnetostrictive material is all generally with electric arc melting or induction melting.Electric arc melting need not cast, and need not mould yet, and the material volume of producing is very little, is commonly called as the button ingot.And induction melting must be cast in mould.Traditional mould is all simple red copper mould or water-cooled metal copper mould.Tradition red copper mould structure is simple, and cooling capacity is limited, the alloy bar material coarse microstructure that therefore casts out, poor-performing.Although water-cooled metal copper mould cooling capacity is strong, easily seep water, leak, cause moisture increase in vacuum drying oven, destroy vacuum environment.Water cooling mold causes the vacuum drying oven complex structure simultaneously, makes difficulty, greatly increases equipment cost.
Through By consulting literatures, the required Q235 mild steel metal die with reinforcement when Yiliang, Kunming Lee family of chemical industry equipment Foundry Works unit, Hu Shaobo have announced a kind of copper and smelt, (China, patent of invention, notification number 202539474U) increase the reinforcement cooling around steel mold in this technology, thereby thought the crystal grain of refinement casting alloy bar.Because the ratio of heat transfer coefficient copper of steel is little a lot, steel mold heat radiation chill effect itself is more far short of what is expected than copper mould.In addition, adopt reinforcement mainly to gain in strength, radiating effect is very limited.
Further searching document is found, the people such as the Zhang Yanlong of Lanzhou University of Science ﹠ Technology adopt the water-cooled copper mould to prepare the Fe82Ga18 alloy, (Zhang Yanlong, Ding Yutian, Hu Yong, Liu Fenxia, magnetostrictive effect and the microscopic structure research of king's ball .Fe82Ga18 alloy, foundry engieering, 2008,12:1703-1707).
The preparation giantmagnetostrictive alloy technology that analysis-by-synthesis has been announced learns,
The shortcoming that existing technology is difficult to overcome below existing:
During traditional cast metal mould, cooling velocity is little, and coarse grains is difficult to improve magnetostriction coefficient;
If the employing water cooling mold, mould easily leaks, and causes the destruction of the vacuum environment of vacuum equipment;
Water cooling mold causes the vacuum drying oven complex structure, makes difficulty, greatly increases equipment cost.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of large volume, large base copper metal die are provided, the crystallization cooling velocity of alloy cast ingot in the time of effectively increasing considerably the induction melting giant magnetostrictive material, thereby reach crystal grain thinning, reduce alloy structure loose, improve the purpose of alloy cast ingot structure property.The shortcomings such as the Fe-Ga alloy magnetostriction performance that can solve traditional preparation method's preparation is not high, casting character is not good enough.
A kind of casting copper mould structure for preparing the giantmagnetostrictive alloy bar of the present invention comprises cooling copper mold, large base copper mold and cylindrical heat conducting bar;
Cooling copper mold is assemblied in large base copper mold, and employing closely cooperates, and base copper mold bottom is provided with steam vent greatly; Cylindrical heat conducting bar is assemblied in the two sides of large base, adopts asymmetric distribution, is beneficial to distributing of heat, and cylindrical heat conducting bar diameter can be 20mm, 8 ~ 10 of its numbers;
Cooling copper mold, large base copper mold and heat conducting bar material therefor are red copper;
Molten metal enters in cooling copper mold, closely cooperate owing to adopting between cooling copper mold and large base copper mold, connect closely, and have larger thermograde, therefore be easy to the heat of molten metal is passed in large base copper mold, molten metal obtains rapidly cooling, and the cylindrical heat conducting bar that is distributed in large base copper mold dual-side is further with in the heat leading-in pole in large base copper mold, final heat is distributed uniformly, not only refinement crystal grain, and the crystallite dimension that obtains is more even.
The invention has the beneficial effects as follows:
The present invention adopts the strong refrigeration technique of large volume red copper mould first, because the capacity of heat transmission of metal is more a lot of soon than water-cooled cooling speed, the alloy of this mould preparation makes alloy more keep the unordered phase structure of liquid metal because cooling velocity is fast, significantly improves Magnetostriction.
Compared with the prior art, the prepared alloy grain of the present invention is tiny, and homogeneous chemical composition and casting character significantly improve.The heat conducting bar of asymmetric distribution can be with in the spread heat in large base copper mold and uniform leading-in pole.Not only can crystal grain thinning, and the size that can make crystal grain is evenly, significantly improves the combination property of alloy.
Description of drawings
Fig. 1 is the structure front view of the casting copper mould of preparation giantmagnetostrictive alloy bar of the present invention;
Wherein: 1. cooling copper mold 2. cylindrical heat conducting bars of large base copper mold 3.;
Fig. 2 is the structure top view of the casting copper mould of preparation giantmagnetostrictive alloy bar of the present invention;
Fig. 3 is the concrete size front view of the large base copper mold of the casting copper mould embodiment of preparation giantmagnetostrictive alloy bar of the present invention;
Fig. 4 is the concrete size top view of the large base copper mold of the casting copper mould embodiment of preparation giantmagnetostrictive alloy bar of the present invention;
Fig. 5 is the cooling copper mold size of the casting copper mould front view of the described preparation giantmagnetostrictive alloy bar of invention;
In Fig. 3-5: Φ A is diameter of rod Φ B=Φ A+(40 ~ 50) mm Φ C=Φ B+100mm Φ D=1 ~ 2mm H=h+60mm h is bar length e ≈ 20mm.
The specific embodiment
A kind of large base copper mold of casting copper mould and concrete size of cooling copper mold for preparing the giantmagnetostrictive alloy bar of the present invention seen Fig. 3-5.
Below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated:
In Fig. 1, a kind of metal casting copper mould for preparing the giantmagnetostrictive alloy bar, formed by cooling copper mold (1), large base copper mold (2) and cylindrical heat conducting bar (3), cooling copper mold (1) is assemblied in large base copper mold (2), employing closely cooperates, and base copper mold (2) bottom is provided with the 2mm steam vent greatly;
9 cylindrical heat conducting bars (3) are assemblied in the two sides of large base, adopt asymmetric distribution, are beneficial to distributing of heat;
Cooling copper mold, large base copper mold and heat conducting bar material therefor are red copper;
During work, molten metal enters in cooling copper mold (1), closely cooperates owing to adopting between cooling copper mold (1) and large base copper mold (2), connects closely, and has larger thermograde.Therefore be easy to the heat of molten metal is passed in large base copper mold (2), molten metal obtains rapidly cooling.And the cylindrical heat conducting bar (3) that is distributed in large base copper mold (2) dual-side is further with in the heat leading-in pole in large base copper mold (2).Final heat is distributed uniformly, not only refinement crystal grain, and the crystallite dimension that obtains is more even.
Claims (1)
1. casting copper mould for preparing the giantmagnetostrictive alloy bar is characterized in that: described mould structure comprises cooling copper mold, large base copper mold and cylindrical heat conducting bar;
Cooling copper mold is assemblied in large base copper mold, and employing closely cooperates, and base copper mold bottom is provided with steam vent greatly; Cylindrical heat conducting bar is assemblied in the two sides of large base, adopts asymmetric distribution, is beneficial to distributing of heat, and cylindrical heat conducting bar diameter can be 20mm, 8 ~ 10 of its numbers;
Cooling copper mold, large base copper mold and heat conducting bar material therefor are red copper;
The heat that molten metal enters in cooling copper mold molten metal passes in large base copper mold, molten metal obtains rapidly cooling, and the cylindrical heat conducting bar that is distributed in large base copper mold dual-side is further with in the heat leading-in pole in large base copper mold, and final heat is evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101021301A CN103170607A (en) | 2013-03-28 | 2013-03-28 | Cast copper mould used for manufacturing giant magnetostrictive alloy bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101021301A CN103170607A (en) | 2013-03-28 | 2013-03-28 | Cast copper mould used for manufacturing giant magnetostrictive alloy bars |
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| Publication Number | Publication Date |
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| CN103170607A true CN103170607A (en) | 2013-06-26 |
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| CN2013101021301A Pending CN103170607A (en) | 2013-03-28 | 2013-03-28 | Cast copper mould used for manufacturing giant magnetostrictive alloy bars |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031805A (en) * | 2017-11-15 | 2018-05-15 | 西安理工大学 | A kind of electric arc melting droplet casting mould |
| CN108687314A (en) * | 2018-05-02 | 2018-10-23 | 西安理工大学 | A kind of electric arc melting droplet casting water cooling assembling die |
| CN110218934A (en) * | 2019-07-26 | 2019-09-10 | 南昌工程学院 | A kind of Fe-Ga-Ce-B alloy bar material and preparation method thereof and a kind of cooling copper mould |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004167530A (en) * | 2002-11-19 | 2004-06-17 | Nissan Motor Co Ltd | Mold, and method of cooling casting |
| WO2008116643A1 (en) * | 2007-03-28 | 2008-10-02 | Rwth Aachen | Mold and method for the production of a casting by means of casting |
| CN101468390A (en) * | 2007-12-27 | 2009-07-01 | 财团法人金属工业研究发展中心 | Mold cooling apparatus |
| CN202539474U (en) * | 2012-03-23 | 2012-11-21 | 昆明市宜良化工设备铸造厂 | Raw copper mold with preset strengthening ribs |
-
2013
- 2013-03-28 CN CN2013101021301A patent/CN103170607A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004167530A (en) * | 2002-11-19 | 2004-06-17 | Nissan Motor Co Ltd | Mold, and method of cooling casting |
| WO2008116643A1 (en) * | 2007-03-28 | 2008-10-02 | Rwth Aachen | Mold and method for the production of a casting by means of casting |
| CN101468390A (en) * | 2007-12-27 | 2009-07-01 | 财团法人金属工业研究发展中心 | Mold cooling apparatus |
| CN202539474U (en) * | 2012-03-23 | 2012-11-21 | 昆明市宜良化工设备铸造厂 | Raw copper mold with preset strengthening ribs |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031805A (en) * | 2017-11-15 | 2018-05-15 | 西安理工大学 | A kind of electric arc melting droplet casting mould |
| CN108687314A (en) * | 2018-05-02 | 2018-10-23 | 西安理工大学 | A kind of electric arc melting droplet casting water cooling assembling die |
| CN108687314B (en) * | 2018-05-02 | 2020-11-17 | 西安理工大学 | Water-cooling combined die for electric arc melting and drop casting |
| CN110218934A (en) * | 2019-07-26 | 2019-09-10 | 南昌工程学院 | A kind of Fe-Ga-Ce-B alloy bar material and preparation method thereof and a kind of cooling copper mould |
| CN110218934B (en) * | 2019-07-26 | 2020-06-09 | 南昌工程学院 | Fe-Ga-Ce-B alloy bar and preparation method thereof and cooling copper die |
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Application publication date: 20130626 |