JP3021675B2 - Method and apparatus for manufacturing continuous cast rod having helical shape - Google Patents
Method and apparatus for manufacturing continuous cast rod having helical shapeInfo
- Publication number
- JP3021675B2 JP3021675B2 JP2406938A JP40693890A JP3021675B2 JP 3021675 B2 JP3021675 B2 JP 3021675B2 JP 2406938 A JP2406938 A JP 2406938A JP 40693890 A JP40693890 A JP 40693890A JP 3021675 B2 JP3021675 B2 JP 3021675B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- continuous casting
- casting
- rod
- section
- 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
Links
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
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、らせん状の溝を有し、
内外面に欠陥の少ない健全なる連続鋳造棒を製造する方
法および装置に関するものである。BACKGROUND OF THE INVENTION The present invention has a spiral groove,
The present invention relates to a method and an apparatus for producing a sound continuous cast rod having few defects on the inner and outer surfaces.
【０００２】[0002]
【従来の技術】らせん状の溝を有する長い棒を得る方法
として、たとえば、鋳造等により太い棒を得て、それを
押出し機等により角型の棒又は直線上の溝を有する棒を
得た後にその両端でひねりを加える方法や、転造等によ
り棒の表面にらせんを連続的に刻む方法等が知られてい
る。2. Description of the Related Art As a method for obtaining a long rod having a spiral groove, for example, a thick rod is obtained by casting or the like, and a square rod or a rod having a linear groove is obtained from an extruder or the like. A method of adding a twist at both ends later, a method of continuously cutting a spiral on the surface of a rod by rolling or the like, and the like are known.
【０００３】[0003]
【発明が解決しようとする課題】これらの方法でも、押
出し時に原料棒を連続的に供給することにより連続した
らせん状の溝を有する長い棒を得ることは可能である
が、接続面での押出し用潤滑材による汚染を避けること
や組織的な変化等を避けるのは難しい。Even THE INVENTION to be solved INVENTION These methods, to obtain a long rod with a continuous helical groove by continuously feeding the raw material rod during extrusion is a possible, in connection surface It is difficult to avoid contamination by extrusion lubricants and to avoid organizational changes.
【０００４】押出し加工後にそれぞれの端面を溶接等に
より接合することも可能であるが、接合部の欠陥の有無
の検出には時間と手間を必要とし、かつ、接合部のらせ
ん状の溝の変形もその手直しが複雑で困難を伴う仕事で
あった。Although it is possible to join the respective end faces by welding or the like after the extrusion, it takes time and effort to detect the presence or absence of a defect in the joint, and the deformation of the spiral groove in the joint is required. The rework was a complicated and difficult task.
【０００５】[0005]
【課題を解決するための手段】かかる事情に鑑み、本発
明者らは、らせん状の溝を有する長い棒の効率的な製造
方法について鋭意検討を行った結果、特殊な鋳型を用い
て被鋳造体又は鋳型部を回転させながら鋳造させること
によりらせん状の溝を有する長い棒が得られることを見
出し、本発明を完成させるに至ったものである。In view of such circumstances, the present inventors have conducted intensive studies on an efficient method of manufacturing a long rod having a spiral groove, and as a result, have found that a special mold is used for casting. The present inventors have found that a long rod having a spiral groove can be obtained by casting while rotating a body or a mold portion, thereby completing the present invention.
【０００６】すなわち、本発明は鋳型断面が多角形で鋳
型内壁面がらせん状、又は鋳型断面が円形で鋳型内壁面
にらせん状に刻まれた溝あるいは突起を有する連続鋳造
用鋳型を用い、そのらせん勾配に合わせた回転と引抜き
を行いながら鋳造することにより、らせん状の溝を有す
る鋳造棒を連続的に得ることを特徴とする連続鋳造方
法、および連続鋳造用鋳型の金属溶湯供給部側の内壁面
又は全体が、鋳造される金属の凝固温度以上に鋳型内部
あるいは外部に取付けた加熱体により加熱され、連続鋳
造棒取出し側が凝固温度以下に冷却される一体構造又は
組合わせ構造からなる鋳型を用いることを特徴とする連
続鋳造方法、およびその連続鋳造方法を用いることを特
徴とする連続鋳造装置を提供するものである。That is, the present invention relates to a casting method in which the cross section of a mold is polygonal.
Mold wall is spiral, or the mold cross-section with a continuous casting mold having a groove or projection carved spirally in the mold wall surface is circular, casting while rotating and pulling tailored to its helical slope Thereby, the continuous casting method characterized by continuously obtaining a casting rod having a spiral groove, and the inner wall surface or the whole of the continuous metal mold on the side of the molten metal supply section of the casting mold for continuous casting is at least the solidification temperature of the metal to be cast. to be heated by the heating element attached to the mold inside or outside, the method continuous casting which is characterized by using a mold made of unitary construction or a combination structure continuously cast bar extraction side is cooled below the solidification temperature, and its continuous casting Method
The present invention provides a continuous casting apparatus.
【０００７】以下、本発明について詳細に述べる。本発
明は、あらゆる金属およびその合金について適用できる
が、凝固直後の被鋳造体は、鋳型部の回転又は被鋳造体
自身の回転による剪断力に耐えることが必要であり、純
金属又は少量の合金元素を含む系がより適する。Hereinafter, the present invention will be described in detail. The present invention can be applied to all metals and their alloys, but the casting immediately after solidification needs to withstand the shearing force due to the rotation of the mold part or the rotation of the casting itself, and the pure metal or a small amount of alloy Systems containing elements are more suitable.
【０００８】らせん状の鋳造棒を得る為の回転は、被鋳
造体をらせん勾配に合わせて回転しながら引き抜くこと
によって得られる。鋳造棒が長くなれば、スプールやボ
ビン等の治具に巻き取りながら、その巻き取り治具ごと
回転してもよい。[0008] The rotation for obtaining the spiral casting rod is obtained by pulling out the casting while rotating it in accordance with the spiral gradient. If the casting rod becomes longer, the winding jig may be rotated together with the jig such as a spool or a bobbin.
【０００９】鋳造棒を回転するかわりに、鋳型部をらせ
ん勾配に合わせて回転させながら鋳造棒を引き抜くこと
によってもらせん状の溝を有する鋳造棒を連続的に得る
ことができる。[0009] Instead of rotating the casting rod, the casting rod is pulled out while rotating the mold part in accordance with the helical gradient, whereby a casting rod having a spiral groove can be continuously obtained.
【００１０】本発明における回転機構としては、鋳型部
を回転させる機構、巻き取り治具を回転させる機構、金
属溶湯を供給する溶湯保持部と鋳型部とを一体として回
転させる機構等が可能である。As the rotating mechanism in the present invention, a mechanism for rotating the mold section, a mechanism for rotating the winding jig, a mechanism for integrally rotating the molten metal holding section for supplying the molten metal and the mold section, and the like are possible. .
【００１１】らせん状の溝を有する長い棒が細径の場
合、あるいは、らせんの刻みが細密である場合は、連続
鋳造用の鋳型が鋳造方向と反対方向の一方向性凝固をさ
せ得るものであることが望ましく、かつ、その凝固界面
形状は鋳造棒表面側の凝固が中心部の凝固より遅れがち
のもの程好ましい。When a long rod having a spiral groove has a small diameter, or when a spiral has a fine notch, a continuous casting mold can unidirectionally solidify in a direction opposite to a casting direction. It is preferable that the solidification interface shape is such that the solidification on the surface side of the cast rod tends to lag behind the solidification at the center.
【００１２】この目的のためには、鋳造される金属の凝
固温度以下の冷却部分と凝固温度以上の加熱部分とから
鋳型が構成されていることが効果的である。又冷却部出
口側に直接水をかける等して冷却を強化することも温度
差を増加させるのに効果的である。[0012] For this purpose, it is effective that the casting mold is composed of a cooling portion below the solidification temperature of the metal to be cast and a heating portion above the solidification temperature. It is also effective to increase the temperature difference by strengthening the cooling by spraying water directly on the outlet side of the cooling section.
【００１３】一方向性凝固を確実にするためには、加熱
部と冷却部との温度差が大きい程好ましく、この目的の
ためには両者の間に断熱層を設けることが必要である。In order to ensure the unidirectional solidification, it is preferable that the temperature difference between the heating part and the cooling part is large. For this purpose, it is necessary to provide a heat insulating layer between the two parts.
【００１４】加熱部は溶湯保持部からの伝熱により金属
溶湯の凝固温度以上に保持し得るが、冷却部との間に断
熱層を設けても完全な一方向性凝固の達成は必ずしも十
分ではないので、鋳型内部又は外部に発熱体を設けるこ
とが好ましい。このような発熱体としては電気抵抗によ
る発熱体や誘電コイルによる発熱体等が利用できる。The heating section can maintain the temperature of the molten metal at or above the solidification temperature by heat transfer from the molten metal holding section. However, even if a heat insulating layer is provided between the heating section and the cooling section, it is not always sufficient to achieve complete unidirectional solidification. Therefore, it is preferable to provide a heating element inside or outside the mold. As such a heating element, a heating element based on electric resistance, a heating element based on a dielectric coil, or the like can be used.
【００１５】このような加熱部、断熱部、冷却部を有す
る鋳型を用いてらせん勾配に合わせた回転を行いながら
連続鋳造することにより、らせん状の溝を有する連続鋳
造棒を単純な工程により容易に製造することが可能とな
った。By continuously casting while rotating according to a helical gradient using a mold having such a heating section, a heat insulating section and a cooling section, a continuous casting rod having a spiral groove can be easily formed by a simple process. It became possible to manufacture.
【００１６】なお、本発明における鋳型断面の基本形状
は円であるが、三角形から多角形の中で任意の形状のも
のを選ぶことができる。たとえば、断面が矩形で鋳型内
壁面がらせん状であれば、らせん状の外観を持ったもの
が得られる。断面が円であれば鋳型内壁面にらせん状に
刻まれた溝あるいは突起を有する鋳型を用いることによ
り、らせん状の溝を有する連続鋳造棒を得ることができ
る。Although the basic shape of the cross section of the mold in the present invention is a circle, any shape can be selected from triangles to polygons. For example, if the cross section is rectangular and the inner wall surface of the mold is helical, one having a helical appearance can be obtained. If the cross section is a circle, a continuous cast rod having a spiral groove can be obtained by using a mold having grooves or projections spirally formed on the inner wall surface of the mold.
【００１７】本発明において得られる連続鋳造棒のらせ
ん状の溝の形状については、引抜きが可能であれば任意
の形状のものを選ぶことができる。Regarding the shape of the spiral groove of the continuous cast rod obtained in the present invention, any shape can be selected as long as it can be drawn.
【００１８】以下、本発明を実施例により詳細に説明す
るが、本発明はこれらに限定されるものではない。Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.
【００１９】[0019]
【実施例】第１図は本発明の方法を実施する鋳造装置の
一例であり、鋳造開始時の状況を示している。溶解保持
炉１には発熱体２、溶湯保持ルツボ３を有し、アルミ溶
湯４が溶解保持されている。溶解ルツボの横壁には鋳型
加熱ヒーター８を内蔵した黒鉛製加熱部５と銅製で内部
が水冷される鋳型冷却部６とその間の伝熱を妨害する厚
さ１mmの石綿布製断熱部７を有する組合せ鋳型が取付け
られている。FIG. 1 shows an example of a casting apparatus for carrying out the method of the present invention, showing a situation at the start of casting. The melting and holding furnace 1 has a heating element 2 and a molten metal holding crucible 3, and the molten aluminum 4 is melted and held. A combination of a graphite heating section 5 having a built-in mold heater 8, a copper mold cooling section 6 having a water-cooled interior, and a 1 mm thick asbestos cloth heat insulating section 7 which hinders heat transfer therebetween is provided on the side wall of the melting crucible. A mold is attached.
【００２０】本実施例では鋳型は横向に取り付けられて
いるがルツボ底部に同様の鋳型を真下向に取り付けても
以下の操作は全く同様に行い得る。鋳型の内径は３０mm
φでその内壁には高さ５mm、底辺１０mm、ピッチ６０mm
の三角形をした線状の突起が１本刻まれている。In this embodiment, the mold is mounted horizontally, but the same operation can be performed in the same manner even if the same mold is mounted directly downward on the bottom of the crucible. The inner diameter of the mold is 30mm
The inner wall is 5mm high, 10mm bottom, 60mm pitch
One triangular linear projection is engraved.
【００２１】鋳造の開始にあたってはアルミ溶湯が鋳型
から洩れないようにダミーブロック９で栓をしておく必
要がある。鋳型を満たしたアルミ溶湯は冷却部にて凝固
し、ダミーブロックと強く接合する。凝固は断熱部まで
進行するが、温度制御装置により加熱部がアルミの凝固
温度より数℃高く設定してあるためにそれ以上凝固は進
行せず、凝固部からの伝熱による冷却のために凝固界面
の形状は進行方向に向かってやや凸型となる。At the start of casting, it is necessary to plug the dummy block 9 so that the molten aluminum does not leak from the mold. The molten aluminum filling the mold solidifies in the cooling section and is strongly bonded to the dummy block. Coagulation Suruga progress to heat insulation section, coagulation more to the heating unit has been set the number ℃ higher than the solidification temperature of the aluminum by a temperature controller proceeds
Not line the shape of the solidification interface for cooling by heat transfer from the solidifying portion becomes slightly convex toward the traveling direction.
【００２２】冷却部の凝固を確認した後、５０mm／min
の引抜速度にて鋳型内壁面のらせん形状に合わせてダミ
ーブロックおよび連続鋳造棒を回転させながら連続鋳造
を行った。After confirming the solidification of the cooling section, 50 mm / min
Continuous casting was performed while rotating the dummy block and the continuous casting rod according to the spiral shape of the inner wall surface of the mold at a drawing speed of.
【００２３】第２図は廻転及び回転引抜用ロール対１１
と連続鋳造された外壁にらせん溝を持つ連続鋳造棒１２
の外観を示す。FIG. 2 shows a pair of rolls 11 for rotating and drawing.
And continuous casting rod 12 with spiral grooves on the outer wall
The appearance of is shown.
【００２４】得られた連続鋳造棒の外観は、なめらかな
らせんを完全に復刻しており、又内部にひけ巣等の欠陥
は無かった。The appearance of the obtained continuous cast rod was a perfect reproduction of a smooth spiral, and there were no defects such as shrinkage cavities inside.
【００２５】[0025]
【発明の効果】このように、本発明によれば、らせん状
の外観を有し内部に欠陥の無い長い連続棒を連続的に鋳
造することができ、その工業的価値は極めて大きい。As described above, according to the present invention, it is possible to continuously cast a long continuous rod having a helical appearance and having no defect inside, and its industrial value is extremely large.
【００２６】[0026]
【図１】加熱冷却組合せ鋳型装置による連続鋳造開始時
の側断面図。FIG. 1 is a side sectional view at the start of continuous casting by a combined heating and cooling mold apparatus.
【図２】鋳造中の鋳型装置の側断面図と鋳造された連続
鋳造棒の外観図。FIG. 2 is a side sectional view of a casting apparatus during casting and an external view of a cast continuous casting rod.
１．溶解保持炉 ７．断熱部 ２．ヒーター ８．鋳型加熱ヒー
ター ３．溶湯保持ルツボ ９．ダミーブロッ
ク ４．アルミ溶湯 １０．鋳型内壁の
らせん状突起 ５．鋳型加熱部 １１．回転引抜用
ロール対 ６．鋳型冷却部 １２．連続鋳造棒1. Melt holding furnace 7. Heat insulation part 2. Heater 8. 2. Mold heating heater Melt holding crucible 9. Dummy block 4. Molten aluminum 10. 4. Spiral protrusions on the inner wall of the mold Mold heating section 11. 5. Roller pair for rotary drawing Mold cooling unit 12. Continuous casting rod
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/00 B22D 11/04 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) B22D 11/00 B22D 11/04
Claims (3)
状、又は鋳型断面が円形で鋳型内壁面にらせん状に刻ま
れた溝あるいは突起を有する連続鋳造用鋳型を用い、そ
のらせん勾配に合わせた回転と引抜きを行いながら鋳造
することにより、らせん状の溝を有する鋳造棒を連続的
に得ることを特徴とする連続鋳造方法。1. A continuous casting mold having a polygonal cross section of a mold and a spiral inner wall surface of the mold , or a circular cross section of the mold and having grooves or projections spirally cut on the inner wall surface of the mold, wherein the spiral gradient is reduced. A continuous casting method characterized by continuously obtaining a casting rod having a spiral groove by performing casting while performing combined rotation and drawing.
面又は全体が、鋳造される金属の凝固温度以上に鋳型内
部あるいは外部に取付けた加熱体により加熱され、連続
鋳造棒取出し側が凝固温度以下に冷却される一体構造又
は組合せ構造からなる鋳型を用いることを特徴とする請
求項１記載の連続鋳造方法。2. A continuous casting mold is heated by a heater attached to the inside or outside of the continuous casting mold at a temperature higher than the solidification temperature of the metal to be cast. The continuous casting method according to claim 1, wherein a mold having an integral structure or a combination structure cooled to a temperature or lower is used.
を用いることを特徴とする連続鋳造装置。3. The continuous casting method according to claim 1 or 2.
A continuous casting apparatus characterized by using:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2406938A JP3021675B2 (en) | 1990-12-26 | 1990-12-26 | Method and apparatus for manufacturing continuous cast rod having helical shape |
| CA 2057166 CA2057166A1 (en) | 1990-12-26 | 1991-12-06 | Process for producing continuously cast bar having helical contour and apparatus therefor |
| DE19914141872 DE4141872A1 (en) | 1990-12-26 | 1991-12-18 | Continuous casting process and mould for casting metal bar - by withdrawal with simultaneous rotation in accordance with spiral slope |
| US07/983,473 US5240065A (en) | 1990-12-26 | 1992-12-03 | Continuously casting an aluminum bar having a herical contour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2406938A JP3021675B2 (en) | 1990-12-26 | 1990-12-26 | Method and apparatus for manufacturing continuous cast rod having helical shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04224047A JPH04224047A (en) | 1992-08-13 |
| JP3021675B2 true JP3021675B2 (en) | 2000-03-15 |
Family
ID=18516559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2406938A Expired - Lifetime JP3021675B2 (en) | 1990-12-26 | 1990-12-26 | Method and apparatus for manufacturing continuous cast rod having helical shape |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3021675B2 (en) |
| CA (1) | CA2057166A1 (en) |
| DE (1) | DE4141872A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT508822B1 (en) * | 2009-09-29 | 2013-11-15 | Siemens Vai Metals Tech Gmbh | COZIL FOR THE FORMING OF METALLIC MELT TO A METAL STRIP WITH CIRCULAR OR POLYGONAL CROSS SECTION IN A CONTINUOUS CASTING MACHINE |
-
1990
- 1990-12-26 JP JP2406938A patent/JP3021675B2/en not_active Expired - Lifetime
-
1991
- 1991-12-06 CA CA 2057166 patent/CA2057166A1/en not_active Abandoned
- 1991-12-18 DE DE19914141872 patent/DE4141872A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CA2057166A1 (en) | 1992-06-27 |
| JPH04224047A (en) | 1992-08-13 |
| DE4141872A1 (en) | 1992-07-02 |
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