JPH0260422B2 - - Google Patents
Info
- Publication number
- JPH0260422B2 JPH0260422B2 JP61173333A JP17333386A JPH0260422B2 JP H0260422 B2 JPH0260422 B2 JP H0260422B2 JP 61173333 A JP61173333 A JP 61173333A JP 17333386 A JP17333386 A JP 17333386A JP H0260422 B2 JPH0260422 B2 JP H0260422B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- hole
- tube
- water
- circumferential direction
- 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
- B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、金属管の鋳造方法及びその鋳造に用
いる鋳型に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for casting metal tubes and a mold used for the casting.
従来の技術
近年、管の内外面に、管の軸方向に延びる直線
状あるいは、螺旋状の凸部を有する管が、熱交管
器用あるいは化学反応管用として需要が高まりつ
つある。BACKGROUND ART In recent years, demand for tubes having linear or spiral convex portions extending in the axial direction of the tube on the inner and outer surfaces of the tube has been increasing for use as heat exchanger tubes or chemical reaction tubes.
発明が解決しようとする問題点
しかし、従来は上記の管の製造にあたつて、管
の周部にフイン状の板を溶接して取り付けている
ために、生産性が著しく乏しいものであつた。Problems to be Solved by the Invention However, in the past, when manufacturing the above-mentioned pipes, a fin-like plate was welded and attached to the circumference of the pipe, resulting in extremely poor productivity. .
本発明は上記問題点を解決するもので、内外面
に凸部を有する管を経済的に、かつ効率的に生産
する金属管の鋳造方法及びその鋳造に用いる鋳造
を提供することを目的とする。 The present invention solves the above-mentioned problems, and aims to provide a metal tube casting method that economically and efficiently produces tubes having convex portions on the inner and outer surfaces, and a casting method used for the casting. .
問題点を解決するための手段
上記問題点を解決するため、本発明の鋳造方法
は、中央部に軸方向の冷却用の孔部が貫通形成さ
れた環状の冷却ジヤケツトの冷却力を、孔部の周
方向の任意の位置で軸方向に沿つて帯状に違え、
孔部内で形成される凝固殻に、前記任意の位置で
の帯状の局部的な冷却によつて偏肉を生じさせ
て、任意形状の管断面を成形する構成としたもの
である。そして、本発明の鋳型は、水冷ジヤケツ
トの中央部に形成された冷却用の孔部周囲に、冷
却水路を、前記孔部の周方向で複数室に区画し、
かつ前記孔部の軸方向で螺線状に形成して設けた
構成としたものである。Means for Solving the Problems In order to solve the above problems, the casting method of the present invention transfers the cooling power of an annular cooling jacket having an axial cooling hole formed through the center part to the hole. at any circumferential position along the axial direction,
The solidified shell formed in the hole is locally cooled in a band shape at the arbitrary position to produce an uneven thickness, thereby forming a pipe cross section of an arbitrary shape. In the mold of the present invention, a cooling water channel is divided into a plurality of chambers in the circumferential direction of the hole around the cooling hole formed in the center of the water-cooled jacket,
Further, the hole is formed in a spiral shape in the axial direction of the hole.
作 用
上記の本発明の鋳造方法は、水冷ジヤケツトの
冷却用の孔部の周方向での冷却むらにより、鋳造
管に偏肉が生ずることに着目したものであり、前
記の冷却むらを意図的につくり出し、孔部の周方
向の任意の位置に局部的な冷却力を作用させるこ
とにより、局部的に肉厚の大きい金属管を鋳造す
るものである。Effect The casting method of the present invention described above focuses on the fact that uneven thickness occurs in a cast tube due to uneven cooling in the circumferential direction of the cooling holes of a water-cooled jacket, and the above-mentioned uneven cooling is intentionally prevented. By applying a local cooling force to any position in the circumferential direction of the hole, a metal tube with a locally large wall thickness is cast.
また、本発明の鋳造用鋳型によれば、冷却水路
の隔室ごとに冷却水量を調整して、螺線状に冷却
力の差を作り、この螺線の送りに一致するよう
に、鋳造管もしくは鋳型を回転させながら鋳造管
を引き上げ、凝固殻を螺線状に偏肉させることに
より、内面に螺線状の凸部を有する管を鋳造す
る。 Further, according to the casting mold of the present invention, the amount of cooling water is adjusted for each compartment of the cooling water channel to create a difference in cooling power in a spiral shape, and the casting pipe is adjusted to match the feed of this spiral. Alternatively, a tube having a spiral convex portion on the inner surface is cast by pulling up the casting tube while rotating the mold and causing the thickness of the solidified shell to vary in a spiral shape.
実施例
以下、本発明の一実施例を図面に基づいて説明
する。第１図において、水冷ジヤケツト１の中央
には、冷却用の孔部２が形成されている。水冷ジ
ヤケツト１の内部には、孔部２の周部に沿つて、
かつ孔部２の軸方向で螺線状に形成された複数の
隔壁３が、孔部２の周方向で等間隔に設けられて
おり、それぞれの隣接し合う隔壁３によつて、複
数の螺線状の冷却水路４が形成されている。Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. In FIG. 1, a cooling hole 2 is formed in the center of a water cooling jacket 1. As shown in FIG. Inside the water cooling jacket 1, along the circumference of the hole 2,
In addition, a plurality of partition walls 3 formed in a spiral shape in the axial direction of the hole 2 are provided at equal intervals in the circumferential direction of the hole 2, and each adjacent partition wall 3 forms a plurality of spiral partitions 3. A linear cooling water channel 4 is formed.
上記の構成によれば、冷却水路４の水量を各水
路ごとに調整し、孔部２の周囲に螺線状に冷却力
の差を作る。この状態で、孔部２内の溶湯は孔部
２の周方向で、各水路ごとに局部的に強く冷却さ
れ、形成される凝固殻の厚みに差が生じる。 According to the above configuration, the amount of water in the cooling water channel 4 is adjusted for each water channel to create a difference in cooling power around the hole 2 in a spiral shape. In this state, the molten metal in the hole 2 is locally strongly cooled in each channel in the circumferential direction of the hole 2, and the thickness of the solidified shell formed varies.
そして、鋳造される管を、冷却水路４の螺線の
ピツチに一致する様に、管側もしくは水冷ジヤケ
ツト１側を回転させながら引き上げる。この時凝
固殻は、冷却水路４の螺線に沿つて厚みに差が生
じ、管内面に螺線状の凸部を有する管が鋳造され
る。 Then, the cast tube is pulled up while rotating the tube side or the water cooling jacket 1 side so as to match the pitch of the spiral of the cooling water channel 4. At this time, the thickness of the solidified shell varies along the spiral of the cooling channel 4, and a tube having a spiral convex portion on the inner surface of the tube is cast.
第２図は、本発明の他の実施例を示すものであ
り、水冷ジヤケツト５の中央には、冷却用の孔部
６が形成されている。水冷ジヤケツト５の内部
は、孔部６の周方向に等間隔で配置された垂直隔
壁７により、複数室に区画され、それぞれの隣接
し合う隔壁７によつて複数の冷却水路８が形成さ
れている。各冷却水路８には、冷却水の供給管９
および排出管１０が連結されている。 FIG. 2 shows another embodiment of the present invention, in which a cooling hole 6 is formed in the center of a water-cooled jacket 5. As shown in FIG. The inside of the water cooling jacket 5 is divided into a plurality of chambers by vertical partition walls 7 arranged at equal intervals in the circumferential direction of the hole 6, and a plurality of cooling channels 8 are formed by each adjacent partition wall 7. There is. Each cooling water channel 8 has a cooling water supply pipe 9
and a discharge pipe 10 are connected.
上記の構成によれば、冷却水路８の水量を各水
路ごとに調整し、周方向に冷却力の差が作る。こ
の状態で、孔部６内の溶湯は、孔部６の周方向
で、各水路ごとに局部的に強く冷却され、形成さ
れる凝固殻の厚みに差が生じる。そして、鋳造さ
れる管を引き上げ、各冷却水路８に沿つて、凝固
殻の厚みの差を形成し、管内面に直線状の凸部を
有する管を鋳造する。 According to the above configuration, the amount of water in the cooling waterways 8 is adjusted for each waterway, and a difference in cooling power is created in the circumferential direction. In this state, the molten metal in the hole 6 is locally strongly cooled in each channel in the circumferential direction of the hole 6, and the thickness of the solidified shell formed varies. Then, the tube to be cast is pulled up, a difference in the thickness of the solidified shell is formed along each cooling channel 8, and a tube having linear convex portions on the inner surface of the tube is cast.
第３図に、水量分布とその分布で形成される管
の断面形状を示す。第３図より明らかなように各
冷却水路の水量を調整することにより図示のよう
な断面形状の管ａ，ｂ，ｃを鋳造出来る。 FIG. 3 shows the water volume distribution and the cross-sectional shape of the pipe formed by that distribution. As is clear from FIG. 3, by adjusting the amount of water in each cooling channel, pipes a, b, and c having the cross-sectional shapes shown can be cast.
第４図〜第５図は、さらに本発明の他の実施例
を示すものであり、水冷ジヤケツト１１の中央
に、冷却用の孔部１２を形成してある。孔部１２
の周囲には、冷却水路１３が設けられており、冷
却水路１３は、環状の仕切壁１４によつて、内路
１３ａと外路１３ｂに仕切られている。外路１３
ａには、周方向の複数箇所に、冷却水を供給する
供給管１５が設けられており、供給管１５は、水
冷ジヤケツト１１の底部近傍で開口している。 4 and 5 show still another embodiment of the present invention, in which a cooling hole 12 is formed in the center of a water cooling jacket 11. Hole 12
A cooling water channel 13 is provided around the cooling water channel 13, and the cooling water channel 13 is partitioned into an inner path 13a and an outer path 13b by an annular partition wall 14. Geiro 13
A is provided with supply pipes 15 for supplying cooling water at a plurality of locations in the circumferential direction, and the supply pipes 15 are opened near the bottom of the water-cooled jacket 11.
内路１３ｂの上部には、冷却水の排出管１６が
連結されている。 A cooling water discharge pipe 16 is connected to the upper part of the inner path 13b.
上記の構成において、冷却水を、供給管１５に
よつて水冷ジヤケツト１１の底部まで導き、底部
にて冷却水路１３内に放出する。この時供給管１
５の開口近辺では、冷却水の流速が大きく、その
為に、局部的に冷却力が強くなる。そして、孔部
１２内の溶湯は、供給管１５の開口近傍で局部的
に強く冷却されて、形成される凝固殻の厚みに差
が生じ、第６図に示すような断面形状の管ｄが鋳
造される。 In the above configuration, the cooling water is guided to the bottom of the water cooling jacket 11 through the supply pipe 15 and discharged into the cooling water channel 13 at the bottom. At this time, supply pipe 1
The flow velocity of the cooling water is high near the opening 5, and therefore the cooling power is locally strong. The molten metal in the hole 12 is locally strongly cooled near the opening of the supply pipe 15, and the thickness of the solidified shell formed differs, resulting in a pipe d having a cross-sectional shape as shown in FIG. to be cast.
第７図〜第８図は、さらに本発明の他の実施例
を示すものであり、水冷ジヤケツト１７の中央に
は、孔部１８が形成されており、孔部１８の周囲
には、冷却水路１９が設けられている。孔部１８
には、円筒状のダイス２０を挿入装着してある。
ダイス２０は、たとえば黒鉛、セラミツク材等の
熱伝導率の良いもので形成されている。 7 and 8 show still another embodiment of the present invention, in which a hole 18 is formed in the center of the water cooling jacket 17, and a cooling water channel is formed around the hole 18. 19 are provided. Hole 18
A cylindrical die 20 is inserted into the holder.
The dice 20 are made of a material with good thermal conductivity, such as graphite or ceramic material.
そしてダイス２０の内面には、周方向の任意の
位置において、ダイス２０の長さ方向の溝２０ａ
が形成してある。 The inner surface of the die 20 has grooves 20a extending in the length direction of the die 20 at any position in the circumferential direction.
is formed.
冷却水路１９には、冷却水の供給管２１および
排出管２２が連結されており、水冷ジヤケツト１
７の周囲は、耐火物２３で覆われている。 A cooling water supply pipe 21 and a discharge pipe 22 are connected to the cooling water channel 19, and the water cooling jacket 1
7 is covered with a refractory material 23.
上記の構成において、鋳型を溶湯に浸漬して管
を引き抜きながら、ダイス２０の外周を水冷ジヤ
ケツト１７内の冷却水によつて均一に冷却する。
しかしダイス２０には、溝２０ａが形成されてい
るため、第９図に示すように外周に軸心方向の突
部ｅを有した管ｆを鋳造できる。このとき、ダイ
ス２０の内面に伝達される冷却力は、ダイスの肉
厚の差によつて周方向において差が生じる。この
ため、ダイス２０内の溶湯は、ダイス２０が薄肉
とされた溝部２０ａで局部的に強く冷却されるた
め、形成される管の内面は正しく円筒状となる。
また第１図〜第６図で説明したものと第７図〜第
８図で説明したものとを組み合せることにより、
管の内外面の任意の位置に凸部を有する管を鋳造
することも可能である。 In the above structure, the outer periphery of the die 20 is uniformly cooled by the cooling water in the water cooling jacket 17 while the mold is immersed in the molten metal and the tube is pulled out.
However, since the groove 20a is formed in the die 20, it is possible to cast a tube f having a protrusion e in the axial direction on the outer periphery as shown in FIG. At this time, the cooling force transmitted to the inner surface of the die 20 varies in the circumferential direction due to the difference in wall thickness of the die. Therefore, the molten metal in the die 20 is locally strongly cooled in the thin groove portion 20a of the die 20, so that the inner surface of the formed tube becomes properly cylindrical.
Also, by combining what was explained in FIGS. 1 to 6 and what was explained in FIGS. 7 to 8,
It is also possible to cast a tube with protrusions at arbitrary positions on the inner and outer surfaces of the tube.
発明の効果
以上述べたごとく本発明によれば、湯道の周方
向の任意の位置を軸方向に沿つて帯状に局部的に
冷却することによつて、断面任意形状の管を鋳造
することが出来る。Effects of the Invention As described above, according to the present invention, by locally cooling an arbitrary position in the circumferential direction of the runner in a band shape along the axial direction, a pipe with an arbitrary cross-sectional shape can be cast. I can do it.
第１図は、本発明の一実施例を示す全体斜視
図、第２図は、本発明の他の実施例を示す平断面
図、第３図、第２図の鋳型による水量分布と鋳造
管の断面形状を示す図、第４図は、本発明のさら
に他の実施例を示す縦断面図、第５図は、第４図
のＡ−Ａ矢視平断面図、第６図は第５図の鋳型で
鋳造される管の断面形状を示す図、第７図は、本
発明のさらに他の実施例を示す縦断面図、第８図
は第７図のＡ−Ａ矢視平断面図、第９図は第７図
の鋳型で鋳造される管断面図である。
１，５，１１，１７……水冷ジヤケツト、２，
６，１２，１８……孔部、３，７……隔壁、４，
８，１３，１９……冷却水路。
FIG. 1 is an overall perspective view showing one embodiment of the present invention, FIG. 2 is a plan sectional view showing another embodiment of the present invention, FIG. 4 is a vertical sectional view showing still another embodiment of the present invention, FIG. 5 is a plan sectional view taken along the line A-A in FIG. 4, and FIG. 7 is a longitudinal sectional view showing still another embodiment of the present invention, and FIG. 8 is a planar sectional view taken along the line A-A in FIG. 7. , FIG. 9 is a sectional view of a tube cast with the mold of FIG. 7. 1, 5, 11, 17...water cooling jacket, 2,
6,12,18...hole, 3,7...partition, 4,
8, 13, 19...Cooling water channel.
Claims (1)
れた環状の冷却ジヤケツトの冷却力を、孔部の周
方向の任意の位置で軸方向に沿つて帯状に違え、
孔部内で形成される凝固殻に、前記任意の位置で
の帯状の局部的な冷却によつて偏肉を生じさせ
て、任意形状の管断面を形成することを特徴とす
る金属管の鋳造方法。 ２ 水冷ジヤケツトの中央部に形成された冷却用
の孔部周囲に、冷却水路を、前記孔部の周方向で
複数室に区画し、かつ前記孔部の軸方向で螺旋状
に形成して設けたことを特徴とする金属管の鋳造
用鋳型。[Scope of Claims] 1. The cooling power of an annular cooling jacket having an axial cooling hole formed through the center thereof can be varied in a band shape along the axial direction at any position in the circumferential direction of the hole. ,
A method for casting a metal tube, characterized in that the solidified shell formed in the hole is locally cooled in a band shape at the arbitrary position to produce an uneven wall thickness, thereby forming a tube cross section of an arbitrary shape. . 2. A cooling water channel is provided around a cooling hole formed in the center of the water cooling jacket by partitioning it into a plurality of chambers in the circumferential direction of the hole and forming a spiral in the axial direction of the hole. A mold for casting metal pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17333386A JPS6330148A (en) | 1986-07-22 | 1986-07-22 | Method for casting metallic pipe and casting mold used for said casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17333386A JPS6330148A (en) | 1986-07-22 | 1986-07-22 | Method for casting metallic pipe and casting mold used for said casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6330148A JPS6330148A (en) | 1988-02-08 |
| JPH0260422B2 true JPH0260422B2 (en) | 1990-12-17 |
Family
ID=15958484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17333386A Granted JPS6330148A (en) | 1986-07-22 | 1986-07-22 | Method for casting metallic pipe and casting mold used for said casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6330148A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428456A (en) * | 1990-05-18 | 1992-01-31 | Kubota Corp | Cooling mold for drawing-up continuous casting |
| JPH0422541A (en) * | 1990-05-18 | 1992-01-27 | Kubota Corp | Drawing up continuous casting method and cooled mold thereof |
| TWI374379B (en) | 2007-12-24 | 2012-10-11 | Wintek Corp | Transparent capacitive touch panel and manufacturing method thereof |
-
1986
- 1986-07-22 JP JP17333386A patent/JPS6330148A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6330148A (en) | 1988-02-08 |
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