JPS61169149A - Continuous casting method - Google Patents

Continuous casting method

Info

Publication number
JPS61169149A
JPS61169149A JP853685A JP853685A JPS61169149A JP S61169149 A JPS61169149 A JP S61169149A JP 853685 A JP853685 A JP 853685A JP 853685 A JP853685 A JP 853685A JP S61169149 A JPS61169149 A JP S61169149A
Authority
JP
Japan
Prior art keywords
mold
molten metal
ingot
continuous casting
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.)
Granted
Application number
JP853685A
Other languages
Japanese (ja)
Other versions
JPH051102B2 (en
Inventor
Masanori Kato
正憲 加藤
Kanji Tanaka
田中　完児
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Nippon Mining Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Mining Co Ltd filed Critical Nippon Mining Co Ltd
Priority to JP853685A priority Critical patent/JPS61169149A/en
Publication of JPS61169149A publication Critical patent/JPS61169149A/en
Publication of JPH051102B2 publication Critical patent/JPH051102B2/ja
Granted legal-status Critical Current

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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE:To cast continuously a unidirectionally solified ingot having decreased segregation with less internal defects by drawing impulsively the casting ingot in a good heat conductive and refractory casting mold of which one end projects to a molten metal bath and the other end contacts with a cooling structural body. CONSTITUTION:The good heat conductive and refractory casting mold 6 which consists of silicon nitride, silicon carbide, graphite, etc. and of which one end projects to the molten metal bath 1 and the other end contacts with the cooling structural body 5 is installed horizontally or vertically in a melting furnace 2. The casting ingot 3 in the mold 6 is impulsively drawn with the longer stop time then the drawing time. The molten metal in the mold 6 is unidirectionally solidified without the inclusion and cavities and with the decreased segregation and is thus continuously cast and drawn. The quality of the ingot 3 is additionally improved if the intermediate part of the mold 6 is externally heated to eliminate the influence of the outdoor air temp. or if an inert gas 4 is blown thereto.

Description

【発明の詳細な説明】 本発明は、金属の連続鋳造方法に関する。[Detailed description of the invention] The present invention relates to a continuous metal casting method.

特に一方向凝固が容易に得ることができる方法に関する
。In particular, it relates to a method by which unidirectional solidification can be easily obtained.

金属の連続鋳造においては、従来方法によれば樹枝状組
織が同方向に成長して得られる柱状晶が。In continuous metal casting, according to the conventional method, columnar crystals are obtained by growing dendritic structures in the same direction.

鋳型側壁より鋳物中央方向に成長し、中央部に等軸品が
成長する場合が多い。　また異物等が鋳物内部に蓄積さ
れ、内部欠陥が多く生じる。It grows from the side wall of the mold toward the center of the casting, and equiaxed products often grow in the center. Further, foreign matter and the like accumulate inside the casting, causing many internal 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２合金によっては２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, two-grain boundary cracking may occur depending on the two alloys, which is not preferable.

この欠点を解決するために、特公昭５５−４６２６５の
ように、鋳型を加熱し、鋳型出口部で凝固させる装置が
提案されているが、その運転においてブレークアウトを
起こし易く操業上難点があった。　また鋳型自体を加熱
するためヒータを鎚型内に内蔵させるものであり、好ま
しい構造ではなかった。In order to solve this problem, a device has been proposed as in Japanese Patent Publication No. 55-46265, which heats the mold and solidifies it at the mold outlet, but it is easy to cause breakouts during operation, making it difficult to operate. . Furthermore, a heater was built into the hammer mold to heat the mold itself, which was not a desirable structure.

即ち機器内電線等細物の導電用材としてのロツド等を製
造する際に要求される材質の項目である１、異物、ピン
ホール等内部欠陥の少ないこと。In other words, the material requirements for manufacturing rods and the like as conductive materials for thin objects such as electric wires in equipment are as follows: 1. There should be few internal defects such as foreign objects and pinholes.

２、長尺物で均一な品質をもつもので、偏析の少ないこ
と。2. It must be long and of uniform quality, with little segregation.

３、柱状晶が、ロットの中心に向かって成長しないこと
。3. Columnar crystals should not grow toward the center of the lot.

の条件を満たず製品を得ることが出来、さらに鋳造の際
に必要な項目である安全性を有することを満たす連続鋳
造方法が、要求されている。There is a need for a continuous casting method that can obtain a product without satisfying the following conditions, and that also satisfies safety, which is a necessary item during casting.

本発明は、以上の要望を満たすものである。The present invention satisfies the above needs.

即ち、鋳型の一端は、溶融金属浴に突出し、他端は、冷
却構造体に接した構造である装置を用いて、鎚造塊をパ
ルス引抜きで引抜く連続鋳造方法である。　さらに、本
発明の実施態様として、以下のものを提供する。That is, this is a continuous casting method in which a hammered ingot is pulled out by pulse drawing using a device in which one end of the mold protrudes into a molten metal bath and the other end is in contact with a cooling structure. Furthermore, the following are provided as embodiments of the present invention.

鋳型の材料が、熱良導体の耐火物である上記鋳造装置。The casting apparatus described above, wherein the material of the mold is a refractory material that is a good thermal conductor.

鋳型の一端と他端の間に、保温用発熱体を設けたーに記
鋳造方法。A casting method in which a heat-retaining heating element is provided between one end and the other end of the mold.

鋳型の冷却構造体の溶融金属浴側から、鋳型壁面に不活
性ガス及び又は中性ガスを吹き込む構造とされた上記鋳
造方法。The above-mentioned casting method has a structure in which inert gas and/or neutral gas is blown into the mold wall surface from the molten metal bath side of the cooling structure of the mold.

以下本発明について、詳細に述べる。The present invention will be described in detail below.

本発明方法が適用される金属は、銅、金、銀、アルミニ
ウム、亜鉛、鉛、スズ等およびこれらの合金等である。Metals to which the method of the present invention is applied include copper, gold, silver, aluminum, zinc, lead, tin, and alloys thereof.

　特に熱良導体のものが好ましい。In particular, those with good thermal conductivity are preferred.

本発明の鋳型の一端は、溶融金属浴に突出している。　
突出させることにより溶融金属の熱により鋳型を加熱す
るものである。　この事により別の加熱手段を用いずに
過剰加熱することなく溶湯の入「１側で凝固面を保持で
きる。　また同時に、一方向凝固を可能とし、結晶粒の
非常に大きい特進組織を得ることができるものである。One end of the mold of the present invention projects into the molten metal bath.
By making the mold protrude, the mold is heated by the heat of the molten metal. This makes it possible to maintain the solidification surface on the first side of the molten metal without using another heating means or overheating.At the same time, it is possible to solidify in one direction and obtain a special structure with very large crystal grains. It is something that can be done.

さらに鋳型の他端は、冷却構造体に接した構造である。Furthermore, the other end of the mold is in contact with the cooling structure.

　鋳型の一方を加熱し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。One-way solidification can be preferably performed by heating one end of the mold and cooling the other end.

また同時に鋳型出口部で溶融金属は、全く存在しない。At the same time, no molten metal is present at the mold outlet.

　これによりブレークアラ１〜のない連続鋳造を可能と
するものである。さらにブレークアウトがなく結晶粒の
大きな鋳塊を得るためには、パルス引抜により行うこと
が、安定な操業及び安定品質の製品を得ることが、見出
された。　パルス引抜とは、一定時間引抜を停止し、そ
の後引抜を行う方法である。　例えば、４．５秒停止し
、０゜５秒引抜くという断続的引抜きである。　停止と
引抜きのそれぞれの時間は、それぞれ短時間で交互に行
われ、かつ停止時間が、引抜き時間より長い方が良い。This enables continuous casting without breakage. Furthermore, in order to obtain an ingot with large crystal grains without breakout, it has been found that pulse drawing provides stable operation and a product of stable quality. Pulse extraction is a method in which extraction is stopped for a certain period of time and then extraction is performed. For example, this is an intermittent withdrawal in which the material is stopped for 4.5 seconds and then withdrawn for 0.5 seconds. It is better that the stop and pull-out times are short and alternate, and the stop time is longer than the pull-out time.

　好ましくは、停止時間／引抜時間が、５以−ｆｚであ
ることが好ましい。Preferably, the stop time/pulling time is 5 or more -fz.

また１回の引抜き長さは、小さい方が良い。Furthermore, the length of one pullout is preferably smaller.

好ましくは、３ｍｍ／回以下である。Preferably, it is 3 mm/time or less.

以上の連続鋳造装置をより好ましくするためには、鋳型
の材料としては、熱良導体の耐火物を用いることが好ま
しい。　例えば、窒化珪素、炭化珪素、黒鉛等である。In order to make the above continuous casting apparatus more preferable, it is preferable to use a refractory material with good thermal conductivity as the material for the mold. For example, silicon nitride, silicon carbide, graphite, etc.

さらに鋳型の一端と他端の間に、鋳型の温度が、外気に
左右されることのないよう保温用発熱体を設けることが
好ましい。　鋳型の全周を囲むように形成することが好
ましい。Furthermore, it is preferable to provide a heat-retaining heating element between one end and the other end of the mold so that the temperature of the mold is not influenced by the outside air. It is preferable to form the mold so as to surround the entire periphery of the mold.

＝４＝ また、鋳型の冷却構造体の溶融金属浴側から、鋳型壁面
に不活性ガス及び又は中性ガスを吹き込む構造とする。=4= Also, the structure is such that inert gas and/or neutral gas is blown into the mold wall surface from the molten metal bath side of the cooling structure of the mold.

　この構造とすることにより、凝固した金属の偏析を防
止し、溶融金属の温度を均一に保持するものである。　
上記ガスは、少なくとも溶融金属の鋳型への入口部の溶
体を攪拌混合する役割をなすものである。　冷却構造体
に接した鋳型の部分より、少くとも鋳型の入口側から、
装入できる構造であることが好ましい。This structure prevents segregation of the solidified metal and maintains a uniform temperature of the molten metal.
The gas serves at least to stir and mix the solution at the entrance of the molten metal to the mold. From the part of the mold in contact with the cooling structure, at least from the inlet side of the mold,
It is preferable that the structure is such that it can be loaded.

さらに本発明に用いる鋳造装置は、溶解炉又は保持炉の
下部に鋳型を設けたもの、あるいは、溶解炉又は保持炉
の側壁槽に鋳型を設けたものであっても良い。Furthermore, the casting apparatus used in the present invention may be one in which a mold is provided at the lower part of a melting furnace or a holding furnace, or one in which a mold is provided in a side wall tank of a melting furnace or a holding furnace.

本発明方法を用いるに適した製品の大きさとしては、あ
まり大径のものは、適さない。　例えば、直径が２０ｍ
ｍ以下の大きさのものである。　これは、鋳型の温度が
、溶融金属あるいは半固体金属に伝わる範囲であること
が好ましい一方向凝固を可能にするためである。As for the size of the product suitable for using the method of the present invention, a product with a very large diameter is not suitable. For example, the diameter is 20m
The size is less than m. This is because the temperature of the mold is preferably within a range that can be transmitted to the molten metal or semi-solid metal in order to enable unidirectional solidification.

以上のように本発明を実施することにより、以下の効果
を得ることができる。By implementing the present invention as described above, the following effects can be obtained.

（１）　ブレークアウトの危険がなく、一方向凝固組織
の長尺金属塊を得ることができる。(1) A long metal lump with a unidirectionally solidified structure can be obtained without the risk of breakout.

（２）異物の混入、ピンホールがない長尺金属塊を得る
ことができる。(2) It is possible to obtain a long metal lump that is free from foreign matter and pinholes.

（３）偏析が少ない一方向凝固の錆塊を得ることができ
る。(3) A unidirectionally solidified rust mass with little segregation can be obtained.

（４）紡塊表面が、極めて滑らかである。(4) The surface of the spindle is extremely smooth.

（５）一方向凝固のため、加工性が極めて良い。(5) Due to unidirectional solidification, workability is extremely good.

（６）結晶粒の大きい長尺金属塊を得ることができるた
め、機器内電線（例えば、オーディオ機器用電線）等の
細物の導電線用材としてのロッドを製造するために適す
る。(6) Since a long metal lump with large crystal grains can be obtained, it is suitable for manufacturing rods as materials for thin conductive wires such as electrical wires for equipment (for example, electrical wires for audio equipment).

実施例１ 第１図に示した装置を用いて実施した。Example 1 The experiment was carried out using the apparatus shown in FIG.

溶解炉（２）底部側壁に取付けた１１ｍｍ径の孔を有す
るグラファイト鋳型（６）に外径１０゜６ｍｍの純銅棒
の端を溶融金属（１）供給側より１ｃｍ内側に位置させ
る。The end of a pure copper rod with an outer diameter of 10° and 6 mm is placed 1 cm inside the supply side of the molten metal (1) in a graphite mold (6) having an 11 mm diameter hole attached to the bottom side wall of the melting furnace (2).

炉には、溶融された純銅５０　ｋ、　ｇを入れ１０００
℃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（５）にＢＱＩ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。Put 50 kg and 100 g of molten pure copper into the furnace.
It was kept at ℃. BQI water was passed through the cooling structure (5) installed on the side opposite to the molten metal supply side, and the solidification position of pure copper was set on the molten metal supply side in the mold.

グラフアイ１〜鋳型に、第」図に示すとと＜Ｎ２ガスを
（４）より導入し、鋳造ロッド（３）の表面を覆いつつ
溶融金属中へ噴出させた。　溶融金属を攪拌し、温度お
よび金属成分のバラツキをなくす働きをなした。　尚Ｎ
２ガスが、溶融金属側のみに放出されるよう、ガスシー
ル（８）を設けた。As shown in Figure 1, N2 gas was introduced into the mold from (4) and was ejected into the molten metal while covering the surface of the casting rod (3). It stirred the molten metal and worked to eliminate variations in temperature and metal composition. Nao N
A gas seal (8) was provided so that the two gases were released only to the molten metal side.

凝固したロッドを連続的に０．５秒で２ｍｍ引抜、その
後４秒停止するピンチロール（７）によるパルス引抜き
を行った。The solidified rod was continuously pulled out by 2 mm in 0.5 seconds, and then pulsed with pinch rolls (7), which was stopped for 4 seconds.

この結果得られた純銅は、一方向凝固のものであり、結
晶粒が極めて大きいものであった。The resulting pure copper was unidirectionally solidified and had extremely large crystal grains.

実施例２ 第２図、第３図、第４図の装置においても、実施例１−
と同様に行ったところ、好ましい一方向凝固のロッドが
得られた。Example 2 In the apparatuses shown in FIGS. 2, 3, and 4, Example 1-
When the procedure was carried out in the same manner as above, a preferable unidirectionally solidified rod was obtained.

尚、第３図、第４図では、外気温の影響を少なくするた
めに設けた保温用発熱体（９）を設けたものを使用した
。In addition, in FIGS. 3 and 4, a device equipped with a heat-retaining heating element (9) was used in order to reduce the influence of outside temperature.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、横型連続鋳造において、適用された本発明で
ある。　第２図は、下向の連続鋳造装置を示す。　第３
図および第４図は、第１図および第２図の態様に対し、
保温用発熱体を設けたものである。 （１）は、溶融金属、（２）は、溶解炉、（３）は、鋳
造ロッド、（４）は、Ｎ２ガス導入口、（５）は、冷却
構造体、（６）は、グラファイト鋳型である。 特許出願人　日１６鉱栗抹式会社 代理人弁理１．　（７５６９）並用啓志第１図 第２図 ｉ　Ｈ＝ 第３図 第４図FIG. 1 shows the present invention applied to horizontal continuous casting. FIG. 2 shows a downward continuous casting apparatus. Third
Figures 1 and 4 show the embodiments of Figures 1 and 2,
It is equipped with a heating element for heat retention. (1) Molten metal, (2) Melting furnace, (3) Casting rod, (4) N2 gas inlet, (5) Cooling structure, (6) Graphite mold It is. Patent Applicant Date: 16th January 16th, 2015, Attorney for the Chestnut Machine Company 1. (7569) Keishi Junyo Figure 1 Figure 2 i H= Figure 3 Figure 4

Claims (4)

【特許請求の範囲】[Claims] （１）鋳型の一端は、溶融金属浴に突出し、他端は、冷
却構造体に接した構造である装置を用いて、鋳造塊をパ
ルス引抜で引抜くことを特徴とする連続鋳造方法。(1) A continuous casting method characterized in that the cast ingot is pulled out by pulse drawing using a device in which one end of the mold protrudes into a molten metal bath and the other end is in contact with a cooling structure. （２）鋳型の材料が、熱良導体の耐火物であることを特
徴とする特許請求の範囲第１項記載の連続鋳造方法。(2) The continuous casting method according to claim 1, wherein the material of the mold is a refractory material that is a good thermal conductor. （３）鋳型の一端と他端の間に、保温用発熱体を設けた
ことを特徴とする特許請求範囲第１項記載の連続鋳造方
法。(3) The continuous casting method according to claim 1, characterized in that a heat-retaining heating element is provided between one end and the other end of the mold. （４）鋳型の冷却構造体の溶融金属浴側から、鋳型壁面
に不活性ガス及び又は中性ガスを吹き込む構造とされて
いることを特徴とする特許請求の範囲第１項記載の連続
鋳造方法。(4) The continuous casting method according to claim 1, characterized in that the inert gas and/or neutral gas is blown into the mold wall surface from the molten metal bath side of the cooling structure of the mold. .
JP853685A 1985-01-22 1985-01-22 Continuous casting method Granted JPS61169149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP853685A JPS61169149A (en) 1985-01-22 1985-01-22 Continuous casting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP853685A JPS61169149A (en) 1985-01-22 1985-01-22 Continuous casting method

Publications (2)

Publication Number Publication Date
JPS61169149A true JPS61169149A (en) 1986-07-30
JPH051102B2 JPH051102B2 (en) 1993-01-07

Family

ID=11695871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP853685A Granted JPS61169149A (en) 1985-01-22 1985-01-22 Continuous casting method

Country Status (1)

Country Link
JP (1) JPS61169149A (en)

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JPS6367416A (en) * 1986-09-09 1988-03-26 斎藤　敏定 Driving member
JPH01224141A (en) * 1988-03-03 1989-09-07 Nippon Mining Co Ltd Method and apparatus for continuous casting
JPH01313149A (en) * 1988-06-10 1989-12-18 Nippon Mining Co Ltd Manufacture of zn alloy wire and its use
US4899801A (en) * 1986-06-10 1990-02-13 Asaba Co., Ltd. Method for continuous casting of metal and an apparatus therefor
JPH08108251A (en) * 1995-05-08 1996-04-30 Nikko Kinzoku Kk Production of copper pipe material for super-conductivity
WO2005028143A1 (en) * 2003-09-24 2005-03-31 Sumitomo Metal Industries, Ltd. Continuous casting mold and method of continuous casting for copper alloy
JP2007083254A (en) * 2005-09-20 2007-04-05 Fujikura Ltd Wire rod, its manufacturing method and its manufacturing apparatus for producing the same
JP2007196264A (en) * 2006-01-26 2007-08-09 Fujikura Ltd Method for producing rough drawn wire and device therefor
WO2018154962A1 (en) * 2017-02-23 2018-08-30 住友電気工業株式会社 Method for manufacturing copper wire rod

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US10851184B2 (en) 2014-08-22 2020-12-01 Cydex Pharmaceuticals, Inc. Fractionated alkylated cyclodextrin compositions and processes for preparing and using the same

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JPS5870946A (en) * 1981-10-26 1983-04-27 Mitsubishi Heavy Ind Ltd Mold device for horizontal casting machine
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US4899801A (en) * 1986-06-10 1990-02-13 Asaba Co., Ltd. Method for continuous casting of metal and an apparatus therefor
JPS6367416A (en) * 1986-09-09 1988-03-26 斎藤　敏定 Driving member
JPH0158365B2 (en) * 1986-09-09 1989-12-11 Toshisada Saito
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JPH01313149A (en) * 1988-06-10 1989-12-18 Nippon Mining Co Ltd Manufacture of zn alloy wire and its use
JPH08108251A (en) * 1995-05-08 1996-04-30 Nikko Kinzoku Kk Production of copper pipe material for super-conductivity
WO2005028143A1 (en) * 2003-09-24 2005-03-31 Sumitomo Metal Industries, Ltd. Continuous casting mold and method of continuous casting for copper alloy
JP2007083254A (en) * 2005-09-20 2007-04-05 Fujikura Ltd Wire rod, its manufacturing method and its manufacturing apparatus for producing the same
JP4738115B2 (en) * 2005-09-20 2011-08-03 株式会社フジクラ Wire rod, manufacturing method thereof, and manufacturing apparatus thereof
JP2007196264A (en) * 2006-01-26 2007-08-09 Fujikura Ltd Method for producing rough drawn wire and device therefor
WO2018154962A1 (en) * 2017-02-23 2018-08-30 住友電気工業株式会社 Method for manufacturing copper wire rod
CN110325297A (en) * 2017-02-23 2019-10-11 住友电气工业株式会社 The manufacturing method of copper wires
JPWO2018154962A1 (en) * 2017-02-23 2019-12-12 住友電気工業株式会社 Copper wire manufacturing method

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