WO2011067910A1 - 真空溶解鋳造装置 - Google Patents
真空溶解鋳造装置 Download PDFInfo
- Publication number
- WO2011067910A1 WO2011067910A1 PCT/JP2010/006934 JP2010006934W WO2011067910A1 WO 2011067910 A1 WO2011067910 A1 WO 2011067910A1 JP 2010006934 W JP2010006934 W JP 2010006934W WO 2011067910 A1 WO2011067910 A1 WO 2011067910A1
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- WIPO (PCT)
- Prior art keywords
- sealed container
- partition
- space
- partition plate
- support roller
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/106—Shielding the molten jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
Definitions
- the present invention relates to a vacuum melting casting apparatus that melts a metal material to form a casting by a strip casting method.
- a melting furnace and a cooling roll are housed in a sealed container to which a vacuum exhaust pipe and a gas introduction pipe are connected, and the molten metal discharged from the melting furnace is stripped on the cooling roll. It is known to form a ribbon-shaped casting by casting and primary cooling. Moreover, in such a vacuum melting casting apparatus, there is also known one in which a rotating drum that receives a casting formed by a cooling roll and performs secondary cooling in a sealed container is accommodated (see, for example, Patent Document 1). . The rotating drum is rotatably supported in the sealed container by a support roller that abuts on the outer peripheral surface thereof.
- the vacuum melting and casting apparatus when the metal material put into the melting furnace is melted, first, the inside of the sealed container is evacuated to degas components such as moisture contained in the metal material. After that, when the metal material is dissolved to some extent, a gas such as an inert gas is introduced into the sealed container from the gas introduction pipe to increase the internal pressure of the sealed container so as to suppress the transpiration of the metal material in the melting furnace. Yes.
- an object of the present invention is to provide a vacuum melting casting apparatus with excellent productivity that can reduce the replacement frequency of the support roller.
- the present invention forms a casting by first cooling a melting furnace and a molten metal discharged from the melting furnace in a sealed container in which a vacuum exhaust pipe and a gas introduction pipe are connected.
- a vacuum melting casting apparatus in which a cooling roll and a rotating drum that receives and secondarily cools a casting formed by the cooling roll are housed, and the rotating drum is supported in an airtight container by a support roller that abuts the outer peripheral surface thereof.
- a partition portion is provided for partitioning the roller placement space in the sealed container in which the support roller is disposed from the main space in the sealed container in which the melting furnace is disposed.
- An air passage that connects the space and the main space is formed, and a vacuum exhaust pipe is connected to the sealed container so as to communicate with the main space, and a gas introduction pipe is connected so as to communicate with the roller arrangement space.
- the gas in the roller arrangement space is sucked into the main space through the air passage formed in the partition part, and also through the gas introduction pipe.
- the gas flows into the main space through the roller arrangement space and the air passage.
- the partition portion includes a first partition plate fixed to a portion of the outer peripheral surface of the rotary drum closer to the main space than a portion with which the support roller contacts, and a first partition plate on the inner wall surface of the sealed container. It is desirable that the air passage is formed by a gap between the first partition plate and the second partition plate. According to this, even when the evacuation or gas introduction is completed and no airflow is generated, the first and second partition plates become obstacles and the intrusion of dust into the roller arrangement space is suppressed. The support roller can be more effectively prevented from being exposed to the dust atmosphere.
- Sectional drawing of the vacuum melting casting apparatus of embodiment of this invention The expanded sectional view of the partition part of the vacuum melting casting apparatus of FIG.
- reference numeral 1 denotes a closed container which is a component of a vacuum melting casting apparatus.
- the hermetic container 1 includes a vertical cylindrical main container portion 11 and a horizontal cylindrical sub-container portion 12 that is connected to the lower front surface of the main container portion 11.
- An openable / closable lid 13 is provided at the upper end of the main container portion 11.
- a melting furnace 2, a tundish 3, and a cooling roll 4 are accommodated in the main container part 11, and a rotating drum 5 is accommodated in the sub container part 12.
- the melting furnace 2 is pivotally supported by a support column 21 erected in the main container 11 at the upper end of the front surface, and is tilted forward by a cylinder 22 from an upward posture indicated by a solid line in FIG. Being tilted to posture. Then, after putting the metal material into the melting furnace 2 in the upward posture with the lid 13 opened, the lid 13 is closed and the metal material is induction-heated and melted in the melting furnace 2. When the melting of the metal material is completed, the melting furnace 2 is tilted in an inclined posture, and the molten metal in the melting furnace 2 is discharged into the tundish 3.
- the tundish 3 has a ceramic box shape, and the molten metal is quantitatively strip-cast to the cooling roll 4 from a horizontally long slit provided in the nozzle 31 on the bottom surface thereof.
- the cooling roll 4 rotates at a rotational speed of 30 to 1000 rpm, and its outer peripheral surface is water-cooled from the inside.
- the molten metal strip cast on the cooling roll 4 is primarily cooled and solidified on the outer peripheral surface of the cooling roll 4 to be peeled off from the cooling roll 4 as a ribbon-shaped casting. Then, the casting is put into the rotating drum 5 through the flange 41 inclined downward and forwardly cooled in the rotating drum 5.
- the rotating drum 5 is housed in a horizontal posture in the sub container 12.
- a plurality of support rollers 51 that contact the front and rear two portions of the lower half of the outer peripheral surface of the rotating drum 5 are arranged in the sub container portion 12, and the rotating drum 5 is rotated around the horizontal axis in the front-rear direction by these support rollers 51. It is supported so that it can rotate freely.
- the rotating shaft 52 protruding from the closed end on the front side (right side in FIG. 1) of the rotating drum 5 is protruded to the outside through the rotating seal portion 53 provided on the front end wall of the sub container portion 12, and the rotating shaft 52 is moved to the outside.
- the rotary drum 5 is connected to an external motor 54 via a belt 55 so that the rotary drum 5 is rotated forward and backward by the motor 54.
- a spiral protrusion 56 is provided on the inner peripheral surface of the rotating drum 5.
- the casting is fed from the opening end on the rear side (left side in FIG. 1) of the rotating drum 5 to the closed end side by the protrusion 56, and when the rotating drum 5 is reversed.
- the casting is sent to the opening end side of the rotary drum 5 so that the casting falls from the opening end to the discharge pipe 14 suspended from the bottom surface of the main container portion 11.
- the casting that has fallen on the discharge pipe 14 is stored in a recovery container under atmospheric pressure via a sealing chamber provided with a shut-off valve on each of the discharge pipe side and the atmospheric pressure side.
- a vacuum exhaust pipe 6 connected to a vacuum pump (not shown) and a gas introduction pipe 7 connected to a gas supply source such as an inert gas are connected to the sealed container 1.
- a gas such as an inert gas is introduced into the sealed container 1 from the gas introduction pipe 7 to increase the internal pressure of the sealed container 1, and the metal material in the melting furnace 2 I try to suppress transpiration.
- the melting furnace 2 arranges the roller arrangement space 1a (the space between the outer peripheral surface of the rotating drum 5 and the inner wall surface of the sub-container part 12) in the sealed container 1 in which the support roller 51 is arranged.
- a partition portion 8 is provided for partitioning from the main space 1b in the sealed container 1 (the space in the main container portion 11).
- the partition portion 8 is formed with an air passage 83 communicating the roller arrangement space 1a and the main space 1b.
- the vacuum exhaust pipe 6 is connected to the main container part 11 so as to communicate with the main space 1b
- the gas introduction pipe 7 is connected to the sub container part 12 so as to communicate with the roller arrangement space 1a.
- the partition portion 8 is fixed to a portion of the outer peripheral surface of the rotating drum 5 behind (close to the main space 1 b) with respect to the portion with which the support roller 51 on the rear side abuts.
- the inner diameter of the annular first partition plate 81 having a slightly smaller diameter and the inner wall surface of the sub container portion 12 is fixed so as to face the first partition plate 81.
- the inner diameter is slightly larger than the outer diameter of the rotary drum 5.
- an annular second partition plate 82 is formed by a gap between the first partition plate 81 and the second partition plate 82.
- the gas in the roller arrangement space 1 a is sucked into the main space 1 b through the air passage 83 formed in the partition portion 8, Further, when the gas is introduced into the sealed container 1 through the gas introduction pipe 7, the gas flows into the main space 1 b through the roller arrangement space 1 a and the air passage 83.
- the dust accumulated in the main space 1b is evacuated or gasified. Even if soaring at the time of introduction, intrusion of dust into the roller arrangement space 1a is prevented.
- the replacement frequency of the support roller 51 is 1 in 3 months when the partition portion 8 is omitted and both the vacuum exhaust pipe 6 and the gas introduction pipe 7 are connected to the main container portion 11 (the conventional example). In the present embodiment, it was greatly reduced to once every two years.
- one each of the first partition plate 81 and the second partition plate 82 constituting the partition portion 8 is provided, but a plurality of first and second partition plates 81 and 82 are provided.
- a maze-like air passage 83 may be formed between the partition plates 81 and 82. According to this, the penetration
- the first partition plate 81 is bent and the second partition plate 82 is bent so as to enter the bent portion 81 a of the first partition plate 81, so that the bent portion of the first partition plate 81 is bent.
- An air passage 83 may be formed between 81 a and the bent portion 82 a of the second partition plate 82.
- SYMBOLS 1 Airtight container, 1a ... Roller arrangement space, 1b ... Main space, 2 ... Melting furnace, 4 ... Cooling roll, 5 ... Rotating drum, 51 ... Support roller, 6 ... Vacuum exhaust pipe, 7 ... Gas introduction pipe, 8 ... A partition part, 81 ... 1st partition plate, 82 ... 2nd partition plate, 83 ... Airflow path.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
Claims (2)
- 真空排気管と気体導入管とが接続された密閉容器内に、溶解炉と、溶解炉から出湯される溶湯を一次冷却して鋳造物を形成する冷却ロールと、冷却ロールで形成された鋳造物を受け入れて二次冷却する回転ドラムとが収納された真空溶解鋳造装置であって、
回転ドラムは、その外周面に当接する支持ローラで密閉容器内に回転自在に支持されるものにおいて、
支持ローラが配置された密閉容器内のローラ配置空間を溶解炉が配置された密閉容器内の主要空間から仕切る仕切り部が設けられ、仕切り部に、ローラ配置空間と主要空間とを連通する通気路が形成され、
密閉容器に、主要空間に連通するように真空排気管が接続され、ローラ配置空間に連通するように気体導入管が接続されることを特徴とする真空溶解鋳造装置。 - 前記仕切り部は、前記支持ローラが当接する部分よりも前記主要空間寄りの前記回転ドラムの外周面の部分に固定される第1仕切り板と、前記密閉容器の内壁面に、第1仕切り板に対向するように固定される第2仕切り板とで構成され、第1仕切り板と第2仕切り板との間の隙間で前記通気路が形成されることを特徴とする請求項1記載の真空溶解鋳造装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2011544188A JP5479491B2 (ja) | 2009-12-01 | 2010-11-29 | 真空溶解鋳造装置 |
CN2010800528328A CN102665962A (zh) | 2009-12-01 | 2010-11-29 | 真空熔化铸造装置 |
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JP2009273118 | 2009-12-01 | ||
JP2009-273118 | 2009-12-01 |
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WO2011067910A1 true WO2011067910A1 (ja) | 2011-06-09 |
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PCT/JP2010/006934 WO2011067910A1 (ja) | 2009-12-01 | 2010-11-29 | 真空溶解鋳造装置 |
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JP (1) | JP5479491B2 (ja) |
CN (1) | CN102665962A (ja) |
WO (1) | WO2011067910A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102784886A (zh) * | 2012-08-05 | 2012-11-21 | 胡立仁 | 一种球磨机衬板铸造方法 |
WO2015145945A1 (ja) * | 2014-03-27 | 2015-10-01 | 株式会社アルバック | 真空溶解鋳造装置 |
CN105710344A (zh) * | 2016-04-14 | 2016-06-29 | 北京北冶功能材料有限公司 | 一种高温合金母材真空铸造装置及使用方法 |
CN106799477A (zh) * | 2017-02-13 | 2017-06-06 | 芜湖君华材料有限公司 | 一种非晶合金互感器磁芯带材加工系统 |
CN109290536A (zh) * | 2018-09-18 | 2019-02-01 | 洛阳中赫非晶科技有限公司 | 一种非晶带材生产系统 |
Families Citing this family (3)
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CN103801667B (zh) * | 2012-11-08 | 2016-01-06 | 沈阳中北真空科技有限公司 | 稀土永磁合金真空感应熔炼速凝设备 |
CN103658573B (zh) * | 2013-12-09 | 2015-06-03 | 武汉钢铁(集团)公司 | 液态合金真空熔炼单辊甩带方法及其装置 |
CN106887322B (zh) * | 2017-03-03 | 2018-03-30 | 北京科技大学 | 一种高效制备纳米晶稀土永磁粉的方法 |
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JP2006192466A (ja) * | 2005-01-13 | 2006-07-27 | Ulvac Japan Ltd | 希土類金属含有合金の鋳造装置 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102784886A (zh) * | 2012-08-05 | 2012-11-21 | 胡立仁 | 一种球磨机衬板铸造方法 |
WO2015145945A1 (ja) * | 2014-03-27 | 2015-10-01 | 株式会社アルバック | 真空溶解鋳造装置 |
JPWO2015145945A1 (ja) * | 2014-03-27 | 2017-04-13 | 株式会社アルバック | 真空溶解鋳造装置 |
CN105710344A (zh) * | 2016-04-14 | 2016-06-29 | 北京北冶功能材料有限公司 | 一种高温合金母材真空铸造装置及使用方法 |
CN105710344B (zh) * | 2016-04-14 | 2019-02-22 | 北京北冶功能材料有限公司 | 一种高温合金母材真空铸造装置及使用方法 |
CN106799477A (zh) * | 2017-02-13 | 2017-06-06 | 芜湖君华材料有限公司 | 一种非晶合金互感器磁芯带材加工系统 |
CN109290536A (zh) * | 2018-09-18 | 2019-02-01 | 洛阳中赫非晶科技有限公司 | 一种非晶带材生产系统 |
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Publication number | Publication date |
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CN102665962A (zh) | 2012-09-12 |
JPWO2011067910A1 (ja) | 2013-04-18 |
JP5479491B2 (ja) | 2014-04-23 |
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