JP2590386B2 - Pipe continuous casting method - Google Patents
Pipe continuous casting methodInfo
- Publication number
- JP2590386B2 JP2590386B2 JP2308326A JP30832690A JP2590386B2 JP 2590386 B2 JP2590386 B2 JP 2590386B2 JP 2308326 A JP2308326 A JP 2308326A JP 30832690 A JP30832690 A JP 30832690A JP 2590386 B2 JP2590386 B2 JP 2590386B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- molten metal
- mold
- continuous casting
- mold hole
- 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.)
- Expired - Lifetime
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- Continuous Casting (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は中子を具えた水冷鋳型によって管を連続鋳造
する方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for continuously casting a tube with a water-cooled mold having a core.
（従来の技術） 鋼管を連続鋳造する方法として第１図に示す、下向き
中子付き連続鋳造法、第２図に示す横向き中子付き連続
鋳造法、第３図に示す引上げ中子付き連続鋳造法が知ら
れている。(Prior Art) As a method for continuously casting a steel pipe, a continuous casting method with a downward core shown in FIG. 1, a continuous casting method with a horizontal core shown in FIG. 2, and a continuous casting with a pulling core shown in FIG. The law is known.
上記は何れも冷却鋳型（１）の型孔（11）内に中子
（３）を配備し、中子（３）型孔（11）との環状空間に
型孔（11）の一端側から溶湯（６）を流入させ、冷却鋳
型（１）の奪熱によって溶湯（６）を凝固させつつ溶湯
凝固層（61）を型孔（11）の他端側から引き出して管を
連続鋳造するものである。In any of the above, the core (3) is provided in the mold hole (11) of the cooling mold (1), and the annular space between the core (3) and the mold hole (11) is provided from one end side of the mold hole (11). Injecting molten metal (6), solidifying molten metal (6) by heat of cooling mold (1), pulling out molten solidified layer (61) from the other end side of mold hole (11), and continuously casting pipe It is.
第１図の下向き中子付き連続鋳造法では、溶湯（６）
を型孔（11）の上から流入させ溶湯凝固層（61）を下方
に引き出す。In the continuous casting method with a downward core in FIG. 1, the molten metal (6)
From the mold hole (11), and the molten metal solidified layer (61) is drawn downward.
第２図の横向き中子付き連続鋳造法では、溶湯（６）
を横向きの型孔（11）の一端から流入させ、溶湯凝固層
（61）を他端から引き出す。In the continuous casting method with a horizontal core shown in FIG.
Is introduced from one end of the horizontal mold hole (11), and the molten metal solidified layer (61) is pulled out from the other end.
第３図の上向き中子付き連続鋳造法では、冷却鋳型
（１）の下部を溶湯槽（２）に浸けて、型孔（11）の下
方から溶湯（６）を流入させ、溶湯凝固層（61）を上方
に引上げる。In the continuous casting method with an upward core shown in FIG. 3, the lower part of the cooling mold (1) is immersed in the molten metal tank (2), and the molten metal (6) flows in from below the mold hole (11). 61) Pull up.
尚、第３図において、中子（３）を省略しても管の連
続鋳造は可能であるが、中子（３）を用いることによっ
て鋳造管の肉厚の均一化が画れる。In FIG. 3, continuous casting of the tube is possible even if the core (3) is omitted, but by using the core (3), the thickness of the cast tube can be made uniform.
（発明が解決しようとする課題） 上記中子付き連続鋳造法において、溶湯（６）が冷却
凝固する際、体積が収縮して筒状溶湯凝固層（61）の内
径及び外径が縮小する。(Problem to be Solved by the Invention) In the continuous casting method with the core, when the molten metal (6) is cooled and solidified, the volume shrinks and the inner diameter and the outer diameter of the cylindrical molten metal solidified layer (61) are reduced.
溶湯凝固層（61）の内径の縮小により、中子（３）を
抱き込む力が作用し、溶湯凝固層（61）が中子（３）を
円滑に通過できない問題がある。Due to the reduction in the inner diameter of the molten metal solidified layer (61), a force for embracing the core (3) acts, and there is a problem that the molten metal solidified layer (61) cannot pass through the core (3) smoothly.
本発明は、上記問題を解決できる管の連続鋳造法を明
らかにするものである。The present invention clarifies a continuous casting method for pipes that can solve the above-mentioned problems.
（課題を解決する手段） 本発明は、型孔（11）内に中子（３）を具えた水冷鋳
型（１）の、該型孔（11）の一端から溶湯（６）を流入
させ、水冷鋳型（１）内で凝固した溶湯凝固層（61）を
型孔の他端から引き出して管を連続鋳造する方法におい
て、発熱体（４）を内蔵した中子（３）を発熱体の発熱
により積極的に加熱して中子（３）の周面全体の温度を
溶湯の凝固温度以上に保持し、型孔面は冷却ジャケット
（12）によって積極的に冷却し、溶湯の該中子（３）に
接する部分は凝固を阻止し、溶湯の水冷鋳型（１）の型
孔面に接している部分は速やかに凝固させることを特徴
とする。(Means for Solving the Problems) The present invention allows a molten metal (6) to flow from one end of a mold hole (11) of a water-cooled mold (1) having a core (3) in a mold hole (11), In a method of continuously casting a tube by drawing out a molten solidified layer (61) solidified in a water-cooled mold (1) from the other end of a mold hole, a core (3) containing a heating element (4) is heated by the heating element. To maintain the temperature of the entire peripheral surface of the core (3) at or above the solidification temperature of the molten metal. The mold hole surface is actively cooled by the cooling jacket (12). The portion in contact with 3) prevents solidification, and the portion in contact with the mold hole surface of the water-cooled mold (1) of the molten metal is rapidly solidified.
（作用及び効果） 中子（３）の表面温度を溶湯（６）の凝固温度以上に
保っているため、型孔（11）に接する部分の溶湯（６）
が冷却凝固しても、中子（３）に接する部分の溶湯
（６）は液相のままであり、従来の様に溶湯凝固層（6
1）による中子（３）に対する抱き込み力は生じない。(Operation and Effect) Since the surface temperature of the core (3) is maintained at a temperature equal to or higher than the solidification temperature of the molten metal (6), the molten metal (6) in a portion in contact with the mold hole (11)
Even if the molten metal is cooled and solidified, the portion of the molten metal (6) in contact with the core (3) remains in the liquid phase, and the molten solidified layer (6
The embracing force on the core (3) by 1) does not occur.
中子（３）の表面温度を溶湯（６）の凝固温度より少
し高い温度に保持すれば、型孔（11）の出口部分での液
相の厚みを極めて薄くでき、第１図の下向き連続鋳造、
第２図の横向き連続鋳造であっても、中子（３）に接す
る溶湯（６）の液相部分を通じて溶湯槽（２）内の溶湯
（６）が、中子（３）を通過した管内に流出することは
防止できる。If the surface temperature of the core (3) is maintained at a temperature slightly higher than the solidification temperature of the molten metal (6), the thickness of the liquid phase at the outlet of the mold cavity (11) can be made extremely thin, and the downward continuation in FIG. casting,
Even in the horizontal continuous casting shown in FIG. 2, the molten metal (6) in the molten metal tank (2) passes through the core (3) through the liquid phase portion of the molten metal (6) in contact with the core (3). Can be prevented.
（実施例） 第１図は本発明を実施するための連続鋳造装置の一例
を示しており、冷却鋳型（１）の上方に溶湯槽（２）、
下方に溶湯凝固層（61）に対する引出し装置（５）を設
けている。(Example) FIG. 1 shows an example of a continuous casting apparatus for carrying out the present invention, and a molten metal tank (2) is provided above a cooling mold (1).
A drawer (5) for the molten solidified layer (61) is provided below.
冷却鋳型（１）は、中央部に上下に貫通する型孔（1
1）を有し、該型孔を冷却ジャケット（12）で包囲して
いる。The cooling mold (1) has a mold hole (1
1), and the mold cavity is surrounded by a cooling jacket (12).
型孔（11）の上面開口は、溶湯槽（２）の底面の孔
（21）に連通している。The upper opening of the mold hole (11) communicates with the hole (21) on the bottom surface of the molten metal tank (2).
型孔（11）内の上部に、型孔（11）と同心に円筒状の
中子（３）を吊下げ固定して配備する。A cylindrical core (3) is suspended and fixed concentrically with the mold hole (11) and disposed above the mold hole (11).
中子（３）は発熱体（４）、実施例では電気ヒータを
内蔵しており、発熱体（４）の発熱により中子（３）を
加熱して、中子（３）の表面全体を溶湯（６）の凝固温
度以上に高めることができる。The core (3) incorporates a heating element (4), in this embodiment, an electric heater. The core (3) is heated by the heat generated by the heating element (4), and the entire surface of the core (3) is cleaned. The temperature can be raised to the solidification temperature of the molten metal (6) or higher.
溶湯凝固層（61）の引出し装置（５）は、型孔（11）
の下方延長上の溶湯凝固層（61）の引出し移行路を挟ん
で一対のピンチローラ（51）（51）を対向配備し構成さ
れる。The drawing device (5) for the solidified layer of molten metal (61) is
A pair of pinch rollers (51), (51) are arranged opposite to each other with a draw-out transition path of the molten solidified layer (61) on the downward extension of the pair.
然して、溶湯（６）を型孔（11）の上から流入させ、
冷却鋳型（１）によって溶湯（６）を凝固せしめ溶湯凝
固層（61）を下方に引き出す。However, the molten metal (6) is allowed to flow from above the mold hole (11),
The molten metal (6) is solidified by the cooling mold (1), and the molten metal solidified layer (61) is drawn downward.
中子（３）の表面温度を溶湯の凝固温度より稍高い温
度に保つと、型孔（11）に接する部分の溶湯（６）が冷
却凝固しても、中子（３）に接する部分の溶湯（６）は
液相状態のままであり、従来の様に溶湯凝固層（61）に
よる中子（３）に対する抱き込み力は生じない。If the surface temperature of the core (3) is maintained at a temperature slightly higher than the solidification temperature of the molten metal, the portion of the molten metal (6) in contact with the mold hole (11) cools and solidifies, but the portion of the molten metal (6) in contact with the core (3) does The molten metal (6) remains in a liquid phase state, and no embracing force on the core (3) by the molten solidified layer (61) is generated unlike the related art.
第２図は、横向き中子付き連続鋳造装置を示してお
り、左右に貫通する型孔（11）を有する冷却鋳型（１）
の該型孔（11）の一端側に溶湯槽（２）を隣接配備し、
他端側に引出し装置（５）を配備している。型孔（11）
の溶湯槽（２）側には発熱体（４）を内蔵した中子
（３）が配備されている。FIG. 2 shows a continuous casting apparatus with a horizontal core, and a cooling mold (1) having a mold hole (11) penetrating left and right.
A molten metal tank (2) is provided adjacent to one end of the mold hole (11);
A drawer (5) is provided at the other end. Mold hole (11)
A core (3) containing a heating element (4) is provided on the side of the molten metal tank (2).
第３図は、中子付き引上げ連続鋳造装置を示してい
る。FIG. 3 shows a pulling continuous casting apparatus with a core.
上下に貫通する型孔（11）を有する冷却鋳型（１）の
下部を溶湯槽（２）に浸け、発熱体（４）を内蔵した中
子（３）を型孔（11）内の下部に配備し、型孔（11）の
上方に引出し装置（５）を配備している。A lower part of a cooling mold (1) having a die hole (11) penetrating vertically is immersed in a molten metal tank (2), and a core (3) containing a heating element (4) is placed in a lower part in the die hole (11). The drawing device (5) is provided above the mold cavity (11).
第２図の横向き中子付き連続鋳造法では、溶湯（６）
を横向きの型孔（11）の一端から流入させ、溶湯凝固層
（61）を他端側に引き出す。In the continuous casting method with a horizontal core shown in FIG.
Is introduced from one end of the horizontal mold hole (11), and the molten metal solidified layer (61) is drawn out to the other end.
第３図の上向き中子付き連続鋳造法では、冷却鋳型
（１）の下部を溶湯槽（２）に浸けて、型孔（11）の下
方から溶湯（６）を流入させ、溶湯凝固槽（61）を上方
に引上げる。In the continuous casting method with an upward core shown in FIG. 3, the lower part of the cooling mold (1) is immersed in the molten metal tank (2), and the molten metal (6) flows from below the mold hole (11). 61) Pull up.
第２図、第３図の連続鋳造方法の場合も、第１図の場
合と同様、中子（３）の表面温度を溶湯（６）の凝固温
度以上に保つと、型孔（11）に接する部分の溶湯（６）
が冷却凝固しても、中子（３）に接する部分の溶湯
（６）は液相状態のままであり、従来の様に溶湯凝固層
（61）による中子（３）に対する抱き込み力は生じな
い。In the case of the continuous casting method shown in FIGS. 2 and 3, similarly to the case of FIG. 1, when the surface temperature of the core (3) is maintained at or above the solidification temperature of the molten metal (6), the die hole (11) is formed. Molten metal in contact area (6)
Even when is cooled and solidified, the molten metal (6) in the portion in contact with the core (3) remains in a liquid phase state, and the embracing force of the molten metal solidified layer (61) on the core (3) is different from the conventional one. Does not occur.
中子（３）の表面温度を溶湯凝固層（61）よりやや高
い温度に保持することにより、型孔（11）の出口部分で
の液相の厚みを極めて薄くでき、第１図の下向き連続鋳
造、第２図の横向き連続鋳造であっても、中子（３）に
接する溶湯（６）の液相部分を通じて溶湯槽（２）内の
溶湯（６）が、中子（３）を通過した管内に流出するこ
とを防止できる。By maintaining the surface temperature of the core (3) slightly higher than that of the solidified layer of the molten metal (61), the thickness of the liquid phase at the outlet of the mold cavity (11) can be made extremely thin. Even in the casting and the horizontal continuous casting shown in FIG. 2, the molten metal (6) in the molten metal tank (2) passes through the core (3) through the liquid phase portion of the molten metal (6) in contact with the core (3). It can be prevented from flowing into the drained pipe.
尚、本発明は、長尺の中子を鋳造速度に応じて冷却鋳
型を貫通して供給しながら管を連続鋳造する中子付き鋳
包連続鋳造に実施できることは勿論であり、更に、上記
実施例の構成に限定されることはなく、特許請求の範囲
で種々の変形が可能である。It should be noted that the present invention can be of course applied to a core-casting continuous casting in which a continuous core is continuously cast while supplying a long core through a cooling mold in accordance with a casting speed. It is not limited to the configuration of the example, and various modifications are possible within the scope of the claims.
第１図は下向き中子付き連続鋳造装置の断面図、第２図
は中子付き横向き連続鋳造装置の断面図、第３図は中子
付き引上げ連続鋳造装置の断面図である。 （１）……冷却鋳型、（２）……溶湯層 （３）……中子、（４）……発熱体FIG. 1 is a cross-sectional view of a continuous casting apparatus with a downward core, FIG. 2 is a cross-sectional view of a horizontal continuous casting apparatus with a core, and FIG. 3 is a cross-sectional view of a pull-up continuous casting apparatus with a core. (1) ... cooling mold, (2) ... molten layer (3) ... core, (4) ... heating element
Claims (1)
た水冷鋳型（１）の、該型孔（11）の一端から溶湯
（６）を流入させ、水冷鋳型（１）内で凝固した溶湯凝
固層（61）を型孔の他端から引き出して管を連続鋳造す
る方法において、発熱体（４）を内蔵した中子（３）を
発熱体により積極的に加熱して中子（３）の周面の温度
を溶湯の凝固温度以上に保持し、型孔面は冷却ジャケッ
ト（12）によって積極的に冷却し、溶湯の中子（３）に
接する部分は凝固を阻止し、溶湯の水冷鋳型（１）の型
孔（11）内面に接している部分は凝固させながら管を鋳
造することを特徴とする管の連続鋳造方法。A water-cooled mold (1) having a core (3) in a mold hole (11) penetrated therein, and a molten metal (6) flowing from one end of the mold hole (11). In the method of drawing out the solidified layer of molten metal (61) solidified in the above from the other end of the mold hole and continuously casting the tube, the core (3) containing the heating element (4) is positively heated by the heating element. The temperature of the peripheral surface of the core (3) is maintained above the solidification temperature of the molten metal, the mold hole surface is actively cooled by the cooling jacket (12), and the part in contact with the core (3) of the molten metal is solidified. A method of continuously casting a pipe, wherein the pipe is cast while solidifying a portion of the molten metal that is in contact with the inner surface of the mold hole (11) of the water-cooled mold (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2308326A JP2590386B2 (en) | 1990-11-13 | 1990-11-13 | Pipe continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2308326A JP2590386B2 (en) | 1990-11-13 | 1990-11-13 | Pipe continuous casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04178242A JPH04178242A (en) | 1992-06-25 |
| JP2590386B2 true JP2590386B2 (en) | 1997-03-12 |
Family
ID=17979710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2308326A Expired - Lifetime JP2590386B2 (en) | 1990-11-13 | 1990-11-13 | Pipe continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2590386B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5047491B2 (en) * | 2005-11-24 | 2012-10-10 | 三菱電機株式会社 | Rare earth-iron-boron magnet alloy, manufacturing method and manufacturing apparatus thereof |
| CN103056316A (en) * | 2012-06-29 | 2013-04-24 | 大连大山铜业有限公司 | Copper pipe continuous casting device for crystallizer |
| JP6390432B2 (en) * | 2015-01-07 | 2018-09-19 | 三菱マテリアル株式会社 | Cu-Ga alloy cylindrical sputtering target, Cu-Ga alloy cylindrical ingot, method for producing Cu-Ga alloy cylindrical sputtering target, and method for producing Cu-Ga alloy cylindrical ingot |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5897463A (en) * | 1981-12-02 | 1983-06-09 | Atsumi Ono | Continuous casting method for metallic pipe |
| IT1187705B (en) * | 1985-07-24 | 1987-12-23 | Montefluos Spa | FLUORINATED POLYMERS AND RESINS FROM THEM |
| JPS62275547A (en) * | 1985-10-14 | 1987-11-30 | Nippon Light Metal Co Ltd | Method and apparatus for producing hollow billet |
-
1990
- 1990-11-13 JP JP2308326A patent/JP2590386B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04178242A (en) | 1992-06-25 |
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