JPS6068146A - Electromagnetic stirrer in mold - Google Patents
Electromagnetic stirrer in moldInfo
- Publication number
- JPS6068146A JPS6068146A JP17322283A JP17322283A JPS6068146A JP S6068146 A JPS6068146 A JP S6068146A JP 17322283 A JP17322283 A JP 17322283A JP 17322283 A JP17322283 A JP 17322283A JP S6068146 A JPS6068146 A JP S6068146A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- center
- current
- coils
- molten metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 10
- 238000009749 continuous casting Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005266 casting Methods 0.000 abstract 2
- 230000036651 mood Effects 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はモールド内電磁攪拌装置に関し、特にモールド
内の溶湯の回転流の渦中心を自由に所望の位置に移動さ
せ得る上記装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an in-mold electromagnetic stirring device, and more particularly to the above-mentioned device that can freely move the vortex center of a rotating flow of molten metal in a mold to a desired position.
従来、リニアモーター型電磁攪拌装置のコイルは、同一
の制御装置によって作動している。Conventionally, the coils of a linear motor electromagnetic stirrer are operated by the same control device.
その場合、それぞれのコイルによって発生する磁束密度
分布は必ずしも一致しない。そのため溶湯に発生する回
転流の渦中心が鋳型中心と一致しなくなる。そうした場
合、凝固シェルの厚さが均一でなくなシ、凝固収縮ある
いは熱収縮による力が不均一に作用することによって鋳
片の形状がひし形に変形したり、ブレークアウトを引き
起こしたシする。In that case, the magnetic flux density distributions generated by the respective coils do not necessarily match. Therefore, the center of the vortex of the rotating flow generated in the molten metal does not coincide with the center of the mold. In such a case, the thickness of the solidified shell is not uniform, and the force due to solidification shrinkage or thermal contraction acts unevenly, causing the shape of the slab to be deformed into a diamond shape or breakout.
本発明は、上記の欠点を解決するためになされたもので
、連続鋳造機鋳型の周辺に２個以上配置したリニアモー
ター型電磁攪拌装置の各々の電磁攪拌コイルを別々の制
御系統とし、各電磁攪拌コイルの電流、周波数等の電気
条件を独立に変えることによシ溶湯の渦の位置を自由に
制御できるようにしたことを特徴とするモールド内電磁
攪拌装置に関するものである。The present invention has been made in order to solve the above-mentioned drawbacks, and has a separate control system for each electromagnetic stirring coil of a linear motor type electromagnetic stirring device, which is arranged in two or more pieces around a mold of a continuous casting machine. The present invention relates to an in-mold electromagnetic stirring device characterized in that the position of a vortex in molten metal can be freely controlled by independently changing electric conditions such as current and frequency of a stirring coil.
すなわち本発明では、連続鋳造機鋳型の周辺に２個以上
配置したリニアモーター型電磁攪拌装置のコイルを別々
に制御することによジ、該鋳型内で発生する溶湯の回転
流の渦中心を鋳型中心と一致させ、これによって鋳片の
変形、ブレークアウトを防止し、また溶湯の連続鋳造機
鋳型への注湯位置が例えば第１図において、鋳型１の中
心からＤ面側にずれた場合、３面の凝固シェルが厚くな
ることから、コイル２，２の電流を変化させることによ
り、鋳型１の渦中心を移動させて凝固シェルの厚さを均
一にするものである。That is, in the present invention, by separately controlling the coils of two or more linear motor type electromagnetic stirrers arranged around the continuous casting machine mold, the center of the vortex of the rotating flow of molten metal generated in the mold is controlled. This prevents deformation and breakout of the slab, and if the position of pouring the molten metal into the mold of the continuous casting machine deviates from the center of the mold 1 toward the D side as shown in FIG. 1, for example, Since the solidified shell on three sides becomes thicker, the vortex center of the mold 1 is moved by changing the current of the coils 2, 2 to make the thickness of the solidified shell uniform.
ところで、浴湯の回転流の渦中心は、コイルの電流を増
加させると、そのコイルに近づく。By the way, when the current in a coil is increased, the center of the vortex of the rotating flow of bath water approaches the coil.
すなわち、コイルの電流が増加すると、その前面におけ
る磁束密度は大きくなる。それによって溶湯の流速は大
きくなり、対面に対して負圧が増加し、渦中心は電流を
増加したコイルに近づくようになる。本発明は、この原
理を応用したものである。That is, as the current in the coil increases, the magnetic flux density at its front surface increases. As a result, the flow velocity of the molten metal increases, the negative pressure increases with respect to the opposite side, and the vortex center approaches the coil where the current is increased. The present invention applies this principle.
本発明装置の一実施態様例を第２図に示す。An example of an embodiment of the device of the present invention is shown in FIG.
第２図において、連続鋳造機鋳型１の周囲に、リニアモ
ーター型コイル２を２個以上配置し、ケーブル３によっ
てそれぞれの制御盤に接続し、電流、周波数等の電気条
件を各コイル別々に独立に制御する。これにより、上記
した原理に基づいて、溶湯の回転流の渦中心を所望の位
置に自由に移動させることができ、鋳片の変形、ブレー
クアウトが防止でき、しかも凝固シェルの厚さも均一に
でき、この結果、健全な連続鋳造を行うことができる。In Fig. 2, two or more linear motor type coils 2 are arranged around a continuous casting machine mold 1, connected to each control panel by a cable 3, and electrical conditions such as current and frequency are controlled independently for each coil. to control. Based on the above-mentioned principle, this allows the center of the vortex of the rotating flow of molten metal to move freely to a desired position, prevents deformation and breakout of the slab, and evens out the thickness of the solidified shell. As a result, sound continuous casting can be performed.
第１図は本発明装置の作用を説明するだめの図、第２図
は本発明装置の一実施態様例を示す図である。
復代理人 内 １） 明
復代理人 萩 原 亮 −FIG. 1 is a diagram for explaining the operation of the device of the present invention, and FIG. 2 is a diagram showing an embodiment of the device of the present invention. Sub-agents 1) Meifuku agent Ryo Hagiwara -
Claims (1)
ー型電磁攪拌装置の各々の電磁攪拌コイルを別々の制御
系統とし、各電磁攪拌コイルの電流、周波数等の電気条
件を独立に変えることによシ溶湯の渦の位置を自由に制
御できるようにしたことを特徴とするモールド内電磁攪
拌装置。By using a separate control system for each electromagnetic stirring coil of two or more linear motor type electromagnetic stirring devices placed around the continuous casting machine mold, and changing the electrical conditions such as current and frequency of each electromagnetic stirring coil independently. An in-mold electromagnetic stirring device characterized in that the position of a vortex of molten metal can be freely controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17322283A JPS6068146A (en) | 1983-09-21 | 1983-09-21 | Electromagnetic stirrer in mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17322283A JPS6068146A (en) | 1983-09-21 | 1983-09-21 | Electromagnetic stirrer in mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6068146A true JPS6068146A (en) | 1985-04-18 |
Family
ID=15956393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17322283A Pending JPS6068146A (en) | 1983-09-21 | 1983-09-21 | Electromagnetic stirrer in mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6068146A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100601085B1 (en) * | 2001-10-15 | 2006-07-14 | 주식회사 포스코 | Continuous casting method using EMS process whose stirring power is increased by time-periodic magnetic field strength control |
| JP2006281314A (en) * | 2005-03-11 | 2006-10-19 | Jfe Steel Kk | Steel continuous casting method |
| US20180369903A1 (en) * | 2015-12-30 | 2018-12-27 | Ergolines Lab S.R.L. | Production plant of metal rods, casting machine, casting process and control method of electromagnetic stirrer devices of molten metal |
-
1983
- 1983-09-21 JP JP17322283A patent/JPS6068146A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100601085B1 (en) * | 2001-10-15 | 2006-07-14 | 주식회사 포스코 | Continuous casting method using EMS process whose stirring power is increased by time-periodic magnetic field strength control |
| JP2006281314A (en) * | 2005-03-11 | 2006-10-19 | Jfe Steel Kk | Steel continuous casting method |
| US20180369903A1 (en) * | 2015-12-30 | 2018-12-27 | Ergolines Lab S.R.L. | Production plant of metal rods, casting machine, casting process and control method of electromagnetic stirrer devices of molten metal |
| US10792730B2 (en) * | 2015-12-30 | 2020-10-06 | Ergolines Lab S.R.L. | Production plant of metal rods, casting machine, casting process and control method of electromagnetic stirrer devices of molten metal |
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