CN102660767A - Cooling transitional joint for directional solidification equipment of electromagnetic cold crucible - Google Patents
Cooling transitional joint for directional solidification equipment of electromagnetic cold crucible Download PDFInfo
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- CN102660767A CN102660767A CN201210167981XA CN201210167981A CN102660767A CN 102660767 A CN102660767 A CN 102660767A CN 201210167981X A CN201210167981X A CN 201210167981XA CN 201210167981 A CN201210167981 A CN 201210167981A CN 102660767 A CN102660767 A CN 102660767A
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- square
- rectangular parallelepiped
- hole
- directional solidification
- cuboid
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- 238000007711 solidification Methods 0.000 title claims abstract description 14
- 230000008023 solidification Effects 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 15
- 229910001338 liquidmetal Inorganic materials 0.000 abstract description 11
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract 1
- 229910000846 In alloy Inorganic materials 0.000 description 6
- 238000005086 pumping Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003870 refractory metal Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Crucibles And Fluidized-Bed Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A cooling transitional joint for directional solidification equipment of an electromagnetic cold crucible solves the problem that an initial solidification region is lengthened and the effective utilization rate of high-temperature materials is lowered during the process of preparing metal or alloy with high melting point by the aid of existing directional solidification equipment of the electromagnetic cold crucible. The cooling transitional joint comprises a cuboid and a cylinder, each side of the cuboid is provided with a square through hole, and distances from centers of the four square through holes to the bottom end face of the cuboid are the same. The height of the cuboid ranges from 10mm to 1000mm, the width of each square through hole ranges from 1mm to 500mm, and the distance from the bottom end face of each square through hole to the bottom end face of the cuboid ranges from 0mm to 40mm. The cooling transitional joint is used for connecting a sliding rod and a solidified ingot during cooling and directional solidification of liquid metal.
Description
Technical field
The present invention relates to a kind of cooled transition joint.
Background technology
When electromagnetic cold crucible liquid metal cooling directional freeze prepares refractory metal or alloy and begins; Need melt and accept the molten drop that drips after the fuel rod fusing (being the electromagnetic induction fusing) with bed material and form the molten bath, and connection pumping rod and bed material is exactly joint with material.Under the traction of pumping rod, coagulated ingot enters into liquid metal, thereby realizes forcing cooling (as shown in Figure 2).In for some time of the short-term that begins, high-melting point metal or alloy graining ingot are can not get into liquid metal, under the traction of pumping rod, at first are that joint gets into liquid metal, then are only refractory metal or alloy graining ingot and get into liquid metal.If the design of joint is incorrect, when coagulated ingot gets into liquid metal, has very big thermal stresses, thereby cause the material cracking.Whole directional freeze sample can be divided into the initial solidification district, stable growth district and final set district.Mostly the stable growth district is equiax crystal, is not directed column crystal or monocrystalline; The stable growth district is the chief component of directional freeze, is the part of hoping acquisition, and its tissue expectation is column crystal or monocrystalline; The final set district is the mushy zone that forms after having a power failure.If joint design is improper, will cause the length in initial solidification district elongated, the length in stable growth district shortens, thereby reduces the effective rate of utilization of material.
Summary of the invention
The purpose of this invention is to provide a kind of cooled transition joint that is used for the electromagnetic cold crucible apparatus for directional solidification; Present when preparing refractory metal or alloy to solve with the electromagnetic cold crucible apparatus for directional solidification, the elongated and low problem of effective rate of utilization high-temperature material of the length in initial solidification district.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: said joint comprises rectangular parallelepiped and right cylinder; The bottom face of rectangular parallelepiped is connected with the coaxial setting in cylindrical upper surface and the two processes one; The upper surface of rectangular parallelepiped has trapezoidal groove along medullary ray, and the junction, per two sides of rectangular parallelepiped is the arc surface transition, and cylindrical outside surface is provided with screw thread; Each side of rectangular parallelepiped has square through hole; The center of four square through holes all equates that with the distance of the bottom face of rectangular parallelepiped the height of rectangular parallelepiped is 10-1000mm, and the width of square through hole is 1-500mm; The height of square through hole is 1-500mm, and the distance between the bottom face of square through hole and the bottom face of rectangular parallelepiped is 0-400mm.
The present invention has following beneficial effect: the rectangular parallelepiped height among the present invention increases, and each side has square through-hole, when mounted, lets the Ga-In alloy get into the cavity, has so just strengthened the contact area of Ga-In alloy and joint.By the one dimensional heat transfer formula:
Can know that because the increase of area A, the Q that then conducts heat increases; So the heat of melt can pass to liquid metal better; Can bring at least two benefits like this: one of which, make the temperature of temperature and liquid metal at joint top more approaching, this can be avoided because after coagulated ingot gets into liquid metal; The excessive temperature head of coagulated ingot and liquid metal causes, the sample cracking; Its two, after soaking time finishes, the beginning pull, this must cause the unstability of solid-liquid interface.The increase of heat transfer capacity must be quickened the stable solid-liquid interface of solid-liquid interface formation as early as possible of unstability, so can shorten the length in initial solidification district, improves the effective rate of utilization of high-temperature material.
Description of drawings
Fig. 1 is an one-piece construction stereographic map of the present invention, and Fig. 2 is the integrally-built front view of the present invention, and Fig. 3 is the vertical view of Fig. 2, and Fig. 4 is the side-view of Fig. 3.
Embodiment
Embodiment one: combine Fig. 1-Fig. 4 that this embodiment is described; The said joint of this embodiment comprises rectangular parallelepiped 1 and right cylinder 2; The bottom face of rectangular parallelepiped 1 is connected with the coaxial setting in the upper surface of right cylinder 2 and the two processes one, and the upper surface of rectangular parallelepiped 1 has trapezoidal groove 1-1 along medullary ray, and the junction, per two sides of rectangular parallelepiped 1 is the arc surface transition; The outside surface of right cylinder 2 is provided with screw thread; Each side that it is characterized in that rectangular parallelepiped 1 has square through hole 1-2, and the center of four square through hole 1-2 all equates the height h of rectangular parallelepiped 1 with the distance of the bottom face of rectangular parallelepiped 1
1Be 10-1000mm, the width c of square through hole 1-2 is 1-500mm, and the height h of square through hole 1-2 is 1-500mm, and between the bottom face of the bottom face of square through hole 1-2 and rectangular parallelepiped 1 is 0-400mm apart from l.
Embodiment two: combine 1 embodiment of figure explanation, the height h of the right cylinder 2 of this embodiment
2Be 5-200mm, the diameter D of right cylinder 2 is 5-500mm, and this structure is used to connect pumping rod.Other embodiment is identical with embodiment one.
Principle of work: the trapezoidal groove 1-1 on the joint connects collet, and the outside surface of right cylinder 2 is provided with screw thread and is used for being connected with pumping rod.Wherein the effect of collet is mainly reflected in two aspects: one, accept the molten drop of fuel rod; Its two, upper end fusing increases melt volume.After soaking time finishes, start pull-out mechanism, pumping rod moves down, and moves the material bar and gets into the Ga-In alloy.The bottom of moving the material bar stabilizes to Ts, and the temperature of Ga-In alloy is Tr, and the bottom of moving the material bar is H apart from the height of Ga-In alloy, and then the one dimensional heat transfer formula is:
Because A increases, must reduce T
S, could compensate the increase of A, so the square through hole of joint helps reducing the temperature of lower end of moving the material bar, the temperature of lower end temperature and Ga-In alloy of moving the material bar is approaching, when this helps preventing to move the material bar and gets into mold, because the material that excessive temperature differentials causes ftractures.
Claims (2)
1. cooled transition joint that is used for the electromagnetic cold crucible apparatus for directional solidification; Said joint comprises rectangular parallelepiped (1) and right cylinder (2); The coaxial setting in upper surface of the bottom face of rectangular parallelepiped (1) and right cylinder (2) and the two are connected processes one, and the upper surface of rectangular parallelepiped (1) has trapezoidal groove (1-1) along medullary ray, and the junction, per two sides of rectangular parallelepiped (1) is the arc surface transition; The outside surface of right cylinder (2) is provided with screw thread; Each side that it is characterized in that rectangular parallelepiped (1) has square through hole (1-2), and the center of four square through holes (1-2) all equates the height (h of rectangular parallelepiped (1) with the distance of the bottom face of rectangular parallelepiped (1)
1) be 10-1000mm, the width (c) of square through hole (1-2) is 1-500mm, and the height (h) of square through hole (1-2) is 1-500mm, and the distance (l) between the bottom face of the bottom face of square through hole (1-2) and rectangular parallelepiped (1) is 0-400mm.
2. according to the said cooled transition joint that is used for the electromagnetic cold crucible apparatus for directional solidification of claim 1, it is characterized in that the height (h of right cylinder (2)
2) be 5-200mm, the diameter (D) of right cylinder (2) is 5-500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167981.XA CN102660767B (en) | 2012-05-28 | 2012-05-28 | Cooling transitional joint for directional solidification equipment of electromagnetic cold crucible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167981.XA CN102660767B (en) | 2012-05-28 | 2012-05-28 | Cooling transitional joint for directional solidification equipment of electromagnetic cold crucible |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102660767A true CN102660767A (en) | 2012-09-12 |
| CN102660767B CN102660767B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210167981.XA Expired - Fee Related CN102660767B (en) | 2012-05-28 | 2012-05-28 | Cooling transitional joint for directional solidification equipment of electromagnetic cold crucible |
Country Status (1)
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| CN1631577A (en) * | 2004-12-22 | 2005-06-29 | 华南理工大学 | Method for manufacturing die containing interior passageway and its application in directional solidification |
| CN2861904Y (en) * | 2005-11-09 | 2007-01-24 | 泰山集团泰安市普瑞特机械制造有限公司 | Interpolated cooling plate |
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| CN101087084A (en) * | 2007-05-25 | 2007-12-12 | 奇瑞汽车有限公司 | A cooling water cover of electromotive motorcar and its cooling method |
| CN101121999A (en) * | 2007-09-14 | 2008-02-13 | 哈尔滨工业大学 | Method for continuously casting titanium alloy near single-crystal ingot by using electromagnetic cold crucible |
| JP2009541194A (en) * | 2006-06-23 | 2009-11-26 | アール・イー・シー・スキャンウェハー・アー・エス | Reusable crucible and method for manufacturing the same |
| CN201850330U (en) * | 2010-09-06 | 2011-06-01 | 江西同人电子材料有限公司 | Seed crystal clamp |
-
2012
- 2012-05-28 CN CN201210167981.XA patent/CN102660767B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6256395A (en) * | 1985-09-04 | 1987-03-12 | ワツカ−・ケミトロニク・ゲゼルシヤフト・フユア・エレクトロニク・グルントシユトツフエ・ミツト・ベシユレンクテル・ハフツング | Manufacture of silicon rod and equipment |
| JP2003525196A (en) * | 2000-03-03 | 2003-08-26 | カール−ツァイス−スティフツング | Method and apparatus for growing large volume oriented monocrystals. |
| CN1490436A (en) * | 2002-10-15 | 2004-04-21 | 北京有色金属研究总院 | Silicon seed crystal holder for monocrystal silicon by vertical pulling process |
| US20040261691A1 (en) * | 2003-06-25 | 2004-12-30 | Kentaro Doguchi | Crystallization apparatus and method |
| CN1597188A (en) * | 2004-08-11 | 2005-03-23 | 哈尔滨工业大学 | Multifunction cold crucible electromagnetic precision shaping and directional solidification device |
| CN1631577A (en) * | 2004-12-22 | 2005-06-29 | 华南理工大学 | Method for manufacturing die containing interior passageway and its application in directional solidification |
| CN2861904Y (en) * | 2005-11-09 | 2007-01-24 | 泰山集团泰安市普瑞特机械制造有限公司 | Interpolated cooling plate |
| CN2896808Y (en) * | 2006-03-23 | 2007-05-02 | 讯凯国际股份有限公司 | Water-cooling radiating device and water cooling head |
| JP2009541194A (en) * | 2006-06-23 | 2009-11-26 | アール・イー・シー・スキャンウェハー・アー・エス | Reusable crucible and method for manufacturing the same |
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| CN101121999A (en) * | 2007-09-14 | 2008-02-13 | 哈尔滨工业大学 | Method for continuously casting titanium alloy near single-crystal ingot by using electromagnetic cold crucible |
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| CN102660767B (en) | 2015-06-10 |
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Granted publication date: 20150610 |