JPH0337818B2 - - Google Patents
Info
- Publication number
- JPH0337818B2 JPH0337818B2 JP62196305A JP19630587A JPH0337818B2 JP H0337818 B2 JPH0337818 B2 JP H0337818B2 JP 62196305 A JP62196305 A JP 62196305A JP 19630587 A JP19630587 A JP 19630587A JP H0337818 B2 JPH0337818 B2 JP H0337818B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molten metal
- gas
- core
- continuous casting
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 9
- 230000008023 solidification Effects 0.000 claims description 9
- 238000009749 continuous casting Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、長尺中空金属素材の連続鋳造方法に
係り、特には、複合材用母材として適する長尺中
空金属素材の製造に適した方法である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for continuous casting of a long hollow metal material, and particularly to a method for continuous casting of a long hollow metal material suitable as a base material for composite materials. It's a method.
［従来の技術］
管の如き中空金属素材を製造するには、角ある
いは丸棒状鋳片を作製してその中心部を穿孔する
方法や熱間押出による方法、連続鋳造による方法
などがある。[Prior Art] In order to manufacture hollow metal materials such as pipes, there are methods such as producing a rectangular or round bar-shaped slab and perforating the center thereof, a method using hot extrusion, and a method using continuous casting.
［発明が解決しようとする問題点］
従来の鋳片の中心部を穿孔する方法や熱間押出
による方法は多大な工数を必要とする上に寸法精
度や歩留りも十分でなく、コスト面で問題があ
る。又、連続鋳造においては、鋳型と中子との摩
擦のためブレークアウトを起しやすい。さらに柱
状晶が、鋳型側壁より鋳物中央方向に成長し、異
物等が鋳物内部に蓄積され、鋳造欠陥が生じやす
い。[Problems to be solved by the invention] Conventional methods of drilling the center of slabs and hot extrusion methods require a large number of man-hours, have insufficient dimensional accuracy and yield, and are problematic in terms of cost. There is. Furthermore, in continuous casting, breakouts are likely to occur due to friction between the mold and the core. Furthermore, columnar crystals grow from the side walls of the mold toward the center of the casting, and foreign matter and the like accumulate inside the casting, which tends to cause casting defects.
このため、塑性加工時に柱状晶成長方向に圧縮
された場合に、合金によつては粒界割れを生じ好
ましくない。 For this reason, when compressed in the direction of columnar crystal growth during plastic working, grain boundary cracking may occur depending on the alloy, which is undesirable.
したがつて、このような欠点のない長尺中空金
属素材の提供が望まれる。 Therefore, it is desired to provide a long hollow metal material that does not have such drawbacks.
［問題点を解決するための手段］
本発明は一端は溶融金属浴内に突出し、他端は
冷却構造体に接してなる鋳型の溶融金属浴側に中
空部を形成するための中子を保持し、かかる鋳型
を通じて、該鋳型の内壁面に不活性ガスおよび／
又は中性ガスを吹込みながら溶融金属を引抜速度
10〜150mm／分でパルス引抜きをして冷却固化す
ることを特徴とする長尺中空金属素材の連続鋳造
方法である。[Means for Solving the Problems] The present invention provides a method for holding a core for forming a hollow part on the molten metal bath side of a mold, which has one end protruding into the molten metal bath and the other end in contact with a cooling structure. Inert gas and/or gas is applied to the inner wall surface of the mold through the mold.
Or draw out the molten metal while blowing in neutral gas.
This is a continuous casting method for long hollow metal materials, which is characterized by pulse drawing at a rate of 10 to 150 mm/min and cooling and solidification.
本発明の対象となる金属は銅、金、銀、アルミ
ニウム、亜鉛、鉛、スズ等およびこれらの合金で
ある。 Metals targeted by the present invention include copper, gold, silver, aluminum, zinc, lead, tin, and alloys thereof.
本発明の鋳型の一端は溶融金属浴内に突出して
いるが、このことにより溶融金属の熱により鋳型
を加熱する。したがつて、別の加熱手段を用いず
に過剰加熱することなく、鋳型の溶融金属の入口
側で凝固面を保持できる。さらに鋳型の他端は冷
却構造体に接しているので、鋳型の一方を加熱
し、同時に他端を冷却することにより、一方向凝
固を好ましく行い得るものである。さらに、本発
明において重要なことは、中子でも適当に加熱さ
れた状態となつているため、管の厚さ方向におけ
る中央部から凝固されることが好ましいことであ
る。そして鋳型出口部では溶融金属は全く存在し
ないので、ブレークアウトのない連続鋳造が可能
となる。鋳型が熱良導性の耐火物であれば、上記
効果は一層向上する。例えば、窒化珪素、炭化珪
素、黒鉛等である。 One end of the mold of the present invention protrudes into the molten metal bath, thereby causing the mold to be heated by the heat of the molten metal. Therefore, a solidified surface can be maintained on the inlet side of the molten metal of the mold without using a separate heating means and without overheating. Furthermore, since the other end of the mold is in contact with the cooling structure, unidirectional solidification can be preferably performed by heating one end of the mold and simultaneously cooling the other end. Furthermore, what is important in the present invention is that since the core is also in an appropriately heated state, it is preferable to solidify from the center in the thickness direction of the tube. Since no molten metal exists at the mold outlet, continuous casting without breakouts is possible. If the mold is made of a refractory material with good thermal conductivity, the above effects will be further improved. For example, silicon nitride, silicon carbide, graphite, etc.
引抜速度は10〜150mm／分の範囲がよい。この
範囲内で、金属溶湯から中子先端までの凝固域を
極力小さくすることができ（凝固域は５〜10mmが
よい）、鋳造体の一方向凝固ないしは単結晶化が
得られる。 The drawing speed is preferably in the range of 10 to 150 mm/min. Within this range, the solidification zone from the molten metal to the tip of the core can be made as small as possible (the solidification zone is preferably 5 to 10 mm), and unidirectional solidification or single crystallization of the cast product can be achieved.
又、引抜きはパルス引抜で行う。例えば0.5秒
引抜いて4.5秒停止するような条件がよい。この
場合、上記引抜速度は平均値である。 Further, the drawing is performed by pulse drawing. For example, conditions such as pulling out for 0.5 seconds and stopping for 4.5 seconds are good. In this case, the above-mentioned drawing speed is an average value.
さらに鋳造時に鋳型内の凝固界面近傍の金属溶
湯の位置に不活性ガスおよび／又は中性ガスを吹
き込むことにより、金属溶湯の成分偏析をなく
し、勾配を小さくすることにより、一方向凝固を
より有効に行わしめる。 Furthermore, by injecting inert gas and/or neutral gas into the molten metal near the solidification interface in the mold during casting, unidirectional solidification is made more effective by eliminating component segregation of the molten metal and reducing the gradient. to be carried out.
鋳型の内壁や中子の外壁の形状を適宜変更する
ことによつて任意の断面形状をもつた中空金属素
材が得られる。 By appropriately changing the shapes of the inner wall of the mold and the outer wall of the core, a hollow metal material with an arbitrary cross-sectional shape can be obtained.
［実施例］ 実施例を図面に基づいて説明する。[Example] Examples will be described based on the drawings.
第１図中１は溶解炉で、底部側壁に、11mm径の
孔３を有するグラフアイト鋳型２を設け、その溶
融金属４側に、第２図に示すような形状の円柱部
８mmφ5の中子５を取付体６により固定した。そ
して、外径10.8mm、内径8.1mmの銅管をグラフア
イト鋳型２内に挿入し、その端部が中子５に接す
るように位置させた。 1 in Fig. 1 is a melting furnace, in which a graphite mold 2 having a hole 3 with a diameter of 11 mm is provided on the bottom side wall, and a cylindrical part 8 mm φ5 core having a shape as shown in Fig. 2 is installed on the molten metal 4 side. 5 was fixed by a mounting body 6. Then, a copper tube having an outer diameter of 10.8 mm and an inner diameter of 8.1 mm was inserted into the graphite mold 2 and positioned so that its end was in contact with the core 5.
溶解炉１内には溶融させた純銅50Kgを入れ、
1250℃に保持した。溶融金属供給側と反対側に設
置された冷却構造体７に８／分の水を通じ、純
銅の凝固位置を鋳型内の溶融金属供給側に設定し
た。グラフアイト鋳型２内面にはガス供給管８よ
りN2ガスを導入し、鋳造ロツド９の表面に覆い
つつ溶融金属中へ噴出させ、溶融金属を撹拌し、
温度および金属成分のバラツキをなくす働きをさ
せた。なお、N2ガスが溶融金属側のみに放出さ
れるようグラフアイト鋳型２の外部側の鋳造ロツ
ド９との接触位置にガスシール１０を設けてあ
る。 Put 50kg of molten pure copper into melting furnace 1,
It was maintained at 1250°C. 8/min of water was passed through the cooling structure 7 installed on the side opposite to the molten metal supply side, and the solidification position of the pure copper was set on the molten metal supply side in the mold. N2 gas is introduced into the inner surface of the graphite mold 2 from the gas supply pipe 8, and is sprayed into the molten metal while covering the surface of the casting rod 9, stirring the molten metal.
This worked to eliminate variations in temperature and metal composition. A gas seal 10 is provided on the outside of the graphite mold 2 at a position in contact with the casting rod 9 so that the N2 gas is released only to the molten metal side.
凝固したロツドは連続的に0.5秒で２mm引抜き、
その後4.5秒停止するピンチロール１１によりパ
ルス引抜を行つた。 The solidified rod is continuously pulled out by 2 mm in 0.5 seconds,
Thereafter, pulse extraction was performed using the pinch roll 11, which was stopped for 4.5 seconds.
この結果得られた銅管は一方向凝固のもので、
表面は滑らからものであつた。又、外径10.9mm、
内径7.9mmで偏径差（最大径−最小径）は各々
0.05mm、0.03mmであつた。 The resulting copper tube is unidirectionally solidified,
The surface was smooth. Also, outer diameter 10.9mm,
The inner diameter is 7.9mm, and the eccentric diameter difference (maximum diameter - minimum diameter) is each
They were 0.05mm and 0.03mm.
上記実施例は所謂横型であるが、縦型にしても
同様に実施できる。 Although the above embodiment is of a so-called horizontal type, it can be similarly implemented in a vertical type.
又、得られる中空金属素材は第３図に示す円管
状の他に第４図ないし第８図に示すように内外面
共に種々の形状のものが変形例として考えられ
る。 In addition to the cylindrical shape shown in FIG. 3, the obtained hollow metal material may have various shapes both inside and outside as shown in FIGS. 4 to 8 as modified examples.
［発明の効果］
本発明によれば、長尺物でかつ寸法精度もよい
ので、塑性加工、機械加工なしで管として使用す
ることができる。又、一方向凝固材であるので直
接冷間引抜き加工ができ、複合材用母材として適
する。例えば銅合金の場合は、超電導材用銅合金
管、CP線、ジメツト線用銅管等に利用すること
ができる。また、高純度銅で一方向凝固あるいは
単結晶の管が得られることにより、3R値が非常
に高いものが得られる。例えばAg0.1ppm、
S0.03ppmで単結晶に近い高純度銅管では3R値は
5000を示した。[Effects of the Invention] According to the present invention, since it is a long product and has good dimensional accuracy, it can be used as a pipe without plastic working or machining. Furthermore, since it is a unidirectionally solidified material, it can be directly cold-drawn, making it suitable as a base material for composite materials. For example, in the case of copper alloy, it can be used for copper alloy tubes for superconducting materials, copper tubes for CP wires, dimeth wires, etc. Furthermore, by producing unidirectionally solidified or single-crystal tubes using high-purity copper, products with extremely high 3R values can be obtained. For example, Ag0.1ppm,
The 3R value for high-purity copper tubes with S0.03ppm and close to single crystal
Showed 5000.
さらに中子と鋳型の内面形状を変えるだけで、
任意の断面形状の製品が得られるので、例えば断
面方向にスライスしてエツチングすると美しい装
飾品等として使用することができる。 Furthermore, by simply changing the inner shape of the core and mold,
Since products with arbitrary cross-sectional shapes can be obtained, for example, by slicing and etching in the cross-sectional direction, it can be used as beautiful ornaments.
第１図は本発明の実施に適した装置の縦断面
図、第２図は同中子の斜視図、第３図ないし第８
図は製品の変形例を示す斜視図である。
１……溶解炉、２……グラフアイト鋳型、３…
…孔、４……溶融金属、５……中子、６……取付
体、７……冷却構造体、８……ガス供給管、９…
…鋳造ロツド、１０……ガスシール、１１……ピ
ンチロール。
FIG. 1 is a longitudinal sectional view of an apparatus suitable for carrying out the present invention, FIG. 2 is a perspective view of the same core, and FIGS.
The figure is a perspective view showing a modified example of the product. 1... Melting furnace, 2... Graphite mold, 3...
... hole, 4 ... molten metal, 5 ... core, 6 ... mounting body, 7 ... cooling structure, 8 ... gas supply pipe, 9 ...
...Casting rod, 10...Gas seal, 11...Pinch roll.
Claims (1)
造体に接してなる鋳型の溶融金属浴側に製品に中
空部を形成するための中子を保持し、かかる鋳型
を通じて、該鋳型の内壁面に不活性ガスおよび／
又は中性ガスを吹込みながら溶融金属を引抜速度
10〜150mm／分でパルス引抜きをして冷却固化す
ることを特徴とする長尺中空金属素材の連続鋳造
方法。 ２ 鋳型の材料が熱良導性の耐火物よりなる特許
請求の範囲第１項記載の長尺中空金属素材の連続
鋳造法。[Scope of Claims] 1. A mold that holds a core for forming a hollow part in a product on the molten metal bath side of a mold having one end protruding into the molten metal bath and the other end in contact with a cooling structure, and such a mold Inert gas and/or gas are applied to the inner wall surface of the mold through
Or draw out the molten metal while blowing in neutral gas.
A continuous casting method for long hollow metal materials, characterized by pulse drawing at a rate of 10 to 150 mm/min and cooling and solidification. 2. The method for continuous casting of a long hollow metal material according to claim 1, wherein the mold material is made of a refractory material with good thermal conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19630587A JPS6440142A (en) | 1987-08-07 | 1987-08-07 | Continuous casting method for long hollow raw metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19630587A JPS6440142A (en) | 1987-08-07 | 1987-08-07 | Continuous casting method for long hollow raw metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440142A JPS6440142A (en) | 1989-02-10 |
| JPH0337818B2 true JPH0337818B2 (en) | 1991-06-06 |
Family
ID=16355598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19630587A Granted JPS6440142A (en) | 1987-08-07 | 1987-08-07 | Continuous casting method for long hollow raw metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6440142A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6462248A (en) * | 1987-09-02 | 1989-03-08 | Showa Denko Kk | Continuously cast billet of light metal or its alloy having modified cross section |
| JP5412406B2 (en) * | 2010-11-17 | 2014-02-12 | 本田技研工業株式会社 | Core support bracket and method for manufacturing the same |
| CN103008582A (en) * | 2012-12-18 | 2013-04-03 | 广东工业大学 | Continuous casting device and method for copper pipe with straight fins at inner wall |
| JP6237300B2 (en) * | 2014-02-10 | 2017-11-29 | 三菱マテリアル株式会社 | Manufacturing method of ribbed copper tube and continuous casting mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59212146A (en) * | 1983-05-16 | 1984-12-01 | Chuetsu Gokin Chuko Kk | Horizontal type continuous casting method |
| JPS60130449A (en) * | 1983-12-20 | 1985-07-11 | Kawasaki Steel Corp | Continuous casting device for hollow billet |
| JPS61176454A (en) * | 1985-01-31 | 1986-08-08 | Nippon Mining Co Ltd | Continuous casting device |
-
1987
- 1987-08-07 JP JP19630587A patent/JPS6440142A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59212146A (en) * | 1983-05-16 | 1984-12-01 | Chuetsu Gokin Chuko Kk | Horizontal type continuous casting method |
| JPS60130449A (en) * | 1983-12-20 | 1985-07-11 | Kawasaki Steel Corp | Continuous casting device for hollow billet |
| JPS61176454A (en) * | 1985-01-31 | 1986-08-08 | Nippon Mining Co Ltd | Continuous casting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440142A (en) | 1989-02-10 |
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