JPH039818B2 - - Google Patents
Info
- Publication number
- JPH039818B2 JPH039818B2 JP2981987A JP2981987A JPH039818B2 JP H039818 B2 JPH039818 B2 JP H039818B2 JP 2981987 A JP2981987 A JP 2981987A JP 2981987 A JP2981987 A JP 2981987A JP H039818 B2 JPH039818 B2 JP H039818B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- strand
- water
- mold
- cooling
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 11
- 238000009749 continuous casting Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 12
- 239000013078 crystal Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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
- B22D11/14—Plants for continuous casting
- B22D11/145—Plants for continuous casting for upward casting
Description
【発明の詳細な説明】
産業上の利用分野
本発明は鋳型を使用しない連鋳法及びその装置
に関する。更に詳しくは溶融金属から一工程で製
品に極く近似したテーパー付素形材、例えば両持
ちまたは片持ち梁桁、ゴルフのシヤフト等を製造
するに好適な引上げ連鋳法及びその装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a continuous casting method that does not use a mold and an apparatus therefor. More specifically, the present invention relates to a continuous pull casting method and an apparatus therefor suitable for producing tapered materials that closely resemble products, such as double-sided or cantilever girders, golf shafts, etc., from molten metal in one step.
従来技術
金属融液から長尺の素形材を製造する方法とし
て連続鋳造法が知られている。その方法では一次
冷却として水冷銅鋳造を使用する。この鋳型によ
つてストランドの断面形状は決定されるので、テ
ーパー付のストライドは製造することは不可能で
あり、これをテーパー付の製品とするためには、
切削加工、鍛造、スエージング、加熱−引張りな
どの工程が必要であつた。BACKGROUND OF THE INVENTION Continuous casting is known as a method for manufacturing long shaped materials from metal melt. The method uses water-cooled copper casting as the primary cooling. Since the cross-sectional shape of the strand is determined by this mold, it is impossible to manufacture a tapered stride, and in order to make a tapered product,
Processes such as cutting, forging, swaging, and heating/pulling were required.
また、鋳型を使用する方法として、その操業中
に鋳型の幅を変化させ、幅の相違する鋳塊を製造
する方法が提案されたが、得られるものは階段状
のものとなり、これも前記方法におけると同様に
テーパー付素形材とするには後加工を必要とする
欠点があつた。 Furthermore, as a method of using a mold, a method was proposed in which the width of the mold is changed during operation to produce ingots of different widths, but the resulting product is step-shaped, and this is also the method described above. Similar to the above, there was a drawback that post-processing was required to make a tapered material.
発明の目的
本発明は従来法における欠点を解消するべくな
されたもので、その目的は鋳型を使用しない引上
げ連鋳法によつて、テーパー付素形材も容易に製
造し得られる方法及び装置を提供するにある。Purpose of the Invention The present invention was made in order to eliminate the drawbacks of conventional methods, and its purpose is to provide a method and apparatus that can easily manufacture tapered shaped materials by a continuous pull casting method that does not use a mold. It is on offer.
発明の構成
本発明者らは前記目的を達成すべく鋭意研究の
結果、鋳型を使用しない引上げ法で尺長素形材を
製造するには、ストランドの直径、結晶組織、生
産性を制御するため強い冷却を必要とする。スト
ランドを強く冷却するには凝固界面の近い位置、
すなわち、溶融金属表面から近い位置で強く冷却
しなければならない。強い冷却には水を使用する
ことが望ましい。水平連鋳法、引上げ連鋳法では
水を使用し得られるが、引上げ連鋳法では直下に
溶融金属があり、これに水が滴下すると爆発等が
生ずるので、これをさけねばならない。Composition of the Invention As a result of intensive research to achieve the above object, the present inventors have found that in order to manufacture a long material by a drawing method that does not use a mold, it is necessary to control the diameter, crystal structure, and productivity of the strand. Requires intense cooling. To strongly cool the strand, place it near the solidification interface.
That is, the molten metal must be strongly cooled at a position close to the surface. It is desirable to use water for strong cooling. Water can be used in the horizontal continuous casting method and continuous pull casting method, but in the continuous pull casting method, there is molten metal directly below, and if water drips onto it, an explosion may occur, so this must be avoided.
本発明者らは引上げ連鋳法で、溶融金属表面か
ら近い位置で水を使用して強制冷却し、その下部
をガス噴射によりガスシールを行うと、溶融金属
に水が滴下されることがなく、しかも、引上げ速
度、溶融金属の温度及び強制冷却の強さを制御し
ながら引上げると、容易にテーパー付の素形材が
得られることを究明し得た。この知見に基づいて
本発明を完成した。 The present inventors used the pulling continuous casting method to forcibly cool the molten metal using water near the surface, and sealed the lower part with gas injection, thereby preventing water from dripping into the molten metal. Moreover, it has been found that a tapered material can be easily obtained by pulling the molten metal while controlling the pulling speed, temperature of the molten metal, and strength of forced cooling. The present invention was completed based on this knowledge.
本発明の要旨は、鋳型を使用しない引上げ連鋳
造において、溶融金属表面に近い位置でストラン
ドに水を噴射して強制冷却すると共に、その下部
に溶融金属に水が滴下しないようにガス噴射によ
りガスシールし、引上げ速度、溶融金属の温度及
び強制冷却の制御をしながら引上げ鋳造すること
を特徴とする鋳型を使用しない引上げ連鋳法及び
その装置にある。 The gist of the present invention is to forcibly cool the strand by injecting water close to the surface of the molten metal in continuous pulling casting without using a mold, and to prevent water from dripping into the molten metal at the bottom by injecting gas into the strand. The present invention relates to a continuous pull casting method that does not use a mold, which is characterized in that pull casting is performed while sealing and controlling the pulling speed, temperature of molten metal, and forced cooling, and its apparatus.
この方法を実施する装置を図面に基づいて説明
する。 An apparatus for implementing this method will be explained based on the drawings.
第１図は該装置の断面図を示す。１はストラン
ド、２は冷却箱、３は排気用導管、４は水噴射ノ
ズル、５はガイドロール、６はガス噴射ノズル、
７は排水用導管、８は水溜、９はガスシール用リ
ング、１０は溶融金属、１１は保持炉を示す。 FIG. 1 shows a cross-sectional view of the device. 1 is a strand, 2 is a cooling box, 3 is an exhaust conduit, 4 is a water injection nozzle, 5 is a guide roll, 6 is a gas injection nozzle,
7 is a drainage conduit, 8 is a water reservoir, 9 is a gas sealing ring, 10 is a molten metal, and 11 is a holding furnace.
溶融金属１０の表面に近い上部位置に冷却箱２
が設置され、該冷却箱の頂部に排気用導管３を、
その下部に水噴射ノズル４が設けられ、水噴射ノ
ズルより水を噴射してストランド１を強制冷却す
る。ストランド１はガイドロール５によつて保持
される。水噴射ノズル４の下部にガス噴射ノズル
６を設けてガスシールし、水の溶融金属１０に滴
下するのを防止する。ガス噴射はガスシール用リ
ング９により上向きに流れるようにし、水溜８に
水を落下させ、排水用導管７により外部に取り出
される。溶融金属１０の温度は保持炉１１によつ
て制御される。 A cooling box 2 is placed at an upper position close to the surface of the molten metal 10.
is installed, and an exhaust conduit 3 is installed at the top of the cooling box.
A water injection nozzle 4 is provided at the lower part of the strand 1, and the strand 1 is forcibly cooled by injecting water from the water injection nozzle. Strand 1 is held by guide rolls 5. A gas injection nozzle 6 is provided below the water injection nozzle 4 to provide a gas seal to prevent water from dripping into the molten metal 10. The gas jet is caused to flow upward by a gas sealing ring 9, causing water to fall into a water reservoir 8, and is taken out to the outside through a drainage conduit 7. The temperature of molten metal 10 is controlled by a holding furnace 11.
この場合、ストランドの直径、結晶組織、生産
性は、ストランドの引上げ速度、溶融金属の温度
及び強制冷却の強さにより支配され、これらを制
御することによつて所望のものとなし得られる。 In this case, the diameter, crystal structure, and productivity of the strand are controlled by the pulling rate of the strand, the temperature of the molten metal, and the intensity of forced cooling, and can be achieved as desired by controlling these.
求める素形材の断面形状が円形の場合は、スト
ランドと溶融金属との間に微小な相対運動、例え
ばストランドを回転する、溶融金属器を回転す
る、あるいは溶融金属を電磁的に運動させるなど
を行うことが望ましい。 If the cross-sectional shape of the material you are looking for is circular, it is necessary to perform minute relative movements between the strand and the molten metal, such as rotating the strand, rotating the molten metal container, or moving the molten metal electromagnetically. It is desirable to do so.
実施例
内径200mm、深さ350mmの湯溜りに、溶融純アル
ミニウムを693℃（過熱度33℃）に保持し、溶融
純アルミニウムの表面の酸化物を掻取り清浄にし
た後、直径20mmの純アルミニウム製ダミー棒を深
さ10mmに３分間浸漬して凝固を開始させた。Example: Hold molten pure aluminum at 693℃ (superheating degree 33℃) in a pot with an inner diameter of 200mm and a depth of 350mm. After scraping and cleaning the oxides on the surface of the molten pure aluminum, pure aluminum with a diameter of 20mm is placed. The dummy rod was immersed to a depth of 10 mm for 3 minutes to initiate coagulation.
溶融純アルミニウムの表面から120mmの位置に
おいて、毎分1.5の水を噴射して温度勾配を56
℃／cmとした。その下部のガス噴射ノズルから毎
分60Nの窒素ガスを噴射して溶融金属に水が落
下しないようにした。 At a position 120 mm from the surface of molten pure aluminum, water is injected at a rate of 1.5 per minute to reduce the temperature gradient by 56 mm.
It was set as °C/cm. Nitrogen gas was injected at a rate of 60N per minute from the gas injection nozzle at the bottom to prevent water from falling onto the molten metal.
ストランドを毎分1/4回転させながら、引上げ
速度を毎分25mmとすることにより柱状晶からなる
−0.5％テーパー付（先細）丸棒を得た。 A -0.5% tapered (tapered) round bar made of columnar crystals was obtained by rotating the strand at 1/4 revolution per minute and setting the pulling speed to 25 mm per minute.
また引上げ速度を毎分11mmとすることにより柱
状晶からなる＋３％テーパー付（先太）丸棒を得
た。 Further, by setting the pulling speed to 11 mm/min, a +3% tapered (thick end) round bar made of columnar crystals was obtained.
アルミニウムの場合における引上げ長さ75mmで
のストランド直径と、溶融純アルミニウムの温度
及び引上げ速度との関係は第２の通りである。即
ち、溶融純アルミニウムの温度が高く、引上げ速
度が高いときは、細い丸棒が得られる。 In the case of aluminum, the relationship between the strand diameter at a pulling length of 75 mm, the temperature of molten pure aluminum, and the pulling speed is as shown in the second table. That is, when the temperature of molten pure aluminum is high and the pulling rate is high, a thin round bar can be obtained.
発明の効果
本発明の方法によると、次のような優れた効果
を奏し得られる。Effects of the Invention According to the method of the present invention, the following excellent effects can be achieved.
(1) 一次冷却である鋳型を使用しないため、スト
ランドの断面寸法を容易に変更し得られる。(1) Since no mold is used for primary cooling, the cross-sectional dimensions of the strands can be easily changed.
(2) 水で強制冷却するため、強制冷却の強さを引
上げ速度及び溶融金属の温度と共に制御するこ
とにより、順、逆テーパー付、あるいはテーパ
ーなしの素形材を容易に製造し得られる。(2) Since forced cooling is performed using water, by controlling the strength of the forced cooling along with the pulling speed and temperature of the molten metal, it is possible to easily produce shaped materials with forward, reverse tapers, or without a taper.
(3) テーパー付素形材を、溶融金属から１工程で
製造し得られるので、大幅なコスト低減をなし
得られる。(3) Since the tapered material can be manufactured from molten metal in one step, the cost can be significantly reduced.
(4) 強制冷却により凝固の際のＧ／Ｒ（Ｇ：温度
勾配、Ｒ：結晶成長速度）を広範囲に設定する
ことが可能となり、ストランドの結晶組織の制
御が容易である。これにより僅かの結晶粒から
なる柱状晶あるいは１個の結晶粒からなる単結
晶の素形状も製造し得られる。(4) Forced cooling makes it possible to set G/R (G: temperature gradient, R: crystal growth rate) during solidification over a wide range, making it easy to control the crystal structure of the strand. This makes it possible to produce a columnar crystal consisting of a few crystal grains or a single crystal elementary shape consisting of one crystal grain.
(5) ガスシールするため、水は溶融金属に滴下さ
れることがない。(5) Due to the gas seal, water cannot drip into the molten metal.
第１図は本発明の方法を実施する装置の断面図
で、第２図は溶融金属の温度をパラメーターとし
て引上げ速度と引上げ長さ75mmにおけるストラン
ドの直径との関係図である。
１：ストランド、２：冷却箱、３：排気用導
管、４：水噴射ノズル、５：ガイドロール、６：
ガス噴射ノズル、７：排水用導管、８：水溜、
９：ガスシール用リング、１０：溶融金属、１
１：保持炉。
FIG. 1 is a sectional view of an apparatus for carrying out the method of the present invention, and FIG. 2 is a diagram showing the relationship between the pulling speed and the diameter of the strand at a pulling length of 75 mm, using the temperature of the molten metal as a parameter. 1: Strand, 2: Cooling box, 3: Exhaust conduit, 4: Water injection nozzle, 5: Guide roll, 6:
Gas injection nozzle, 7: Drainage pipe, 8: Water reservoir,
9: Gas seal ring, 10: Molten metal, 1
1: Holding furnace.
Claims (1)
融金属表面に近い位置でストランドに水を噴射し
て強制冷却すると共に、その下部に溶融金属に水
が滴下しないようにガス噴射によりガスシール
し、引上げ速度、溶融金属の温度及び強制冷却の
強さを制御しながら引上げ鋳造することを特徴と
する鋳型を使用しない引上げ連鋳法。 ２ 溶融金属表面に近い上部位置に冷却箱を設置
し、該冷却箱は頂部に排気管を、その下部にスト
ランドガイド及びストランドを冷却するための水
噴射ノズルを、更にその下部にガス噴射ノズルと
水溜を設けて水が溶融金属に滴下しないように構
成され、ストランドを冷却箱を通じ引上げ鋳造す
るように構成したことを特徴とする鋳型を使用し
ない引上げ連鋳装置。[Claims] 1. In the pull continuous casting method that does not use a mold, water is injected onto the strand near the surface of the molten metal for forced cooling, and gas is injected below the strand to prevent water from dripping into the molten metal. A continuous pull casting method that does not use a mold, which is characterized by performing pull casting while controlling the pulling speed, temperature of the molten metal, and strength of forced cooling. 2. A cooling box is installed in the upper position near the molten metal surface, and the cooling box has an exhaust pipe at the top, a strand guide and a water injection nozzle for cooling the strands at the bottom, and a gas injection nozzle at the bottom. A continuous pulling casting device that does not use a mold, characterized in that a water reservoir is provided to prevent water from dripping into the molten metal, and the strand is pulled up and cast through a cooling box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2981987A JPS63199050A (en) | 1987-02-13 | 1987-02-13 | Drawing-up continuous casting method without using mold and its apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2981987A JPS63199050A (en) | 1987-02-13 | 1987-02-13 | Drawing-up continuous casting method without using mold and its apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63199050A JPS63199050A (en) | 1988-08-17 |
| JPH039818B2 true JPH039818B2 (en) | 1991-02-12 |
Family
ID=12286631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2981987A Granted JPS63199050A (en) | 1987-02-13 | 1987-02-13 | Drawing-up continuous casting method without using mold and its apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63199050A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02205232A (en) * | 1989-02-01 | 1990-08-15 | Natl Res Inst For Metals | Method and apparatus for drawing-up continuous casting |
| TW200633625A (en) * | 2005-03-03 | 2006-09-16 | Mitac Technology Corp | Adhesion material structure and process method thereof |
| JP5373728B2 (en) * | 2010-09-17 | 2013-12-18 | 株式会社豊田中央研究所 | Free casting method, free casting apparatus and casting |
| JP5755591B2 (en) | 2012-03-16 | 2015-07-29 | トヨタ自動車株式会社 | Cast body manufacturing method and manufacturing apparatus |
| JP5730836B2 (en) | 2012-10-31 | 2015-06-10 | トヨタ自動車株式会社 | Ribbed pipe and manufacturing method thereof |
| JP5924246B2 (en) | 2012-11-22 | 2016-05-25 | トヨタ自動車株式会社 | Pull-up continuous casting apparatus, pull-up continuous casting method, and solidification interface detection apparatus |
| JP5794259B2 (en) * | 2013-07-30 | 2015-10-14 | トヨタ自動車株式会社 | Pull-up type continuous casting apparatus and pull-up type continuous casting method |
| JP2015093308A (en) * | 2013-11-13 | 2015-05-18 | トヨタ自動車株式会社 | Up-drawing casting apparatus |
| JP6119579B2 (en) | 2013-11-26 | 2017-04-26 | トヨタ自動車株式会社 | Pull-up type continuous casting apparatus and pull-up type continuous casting method |
| JP6119578B2 (en) | 2013-11-26 | 2017-04-26 | トヨタ自動車株式会社 | Pull-up type continuous casting apparatus and pull-up type continuous casting method |
| JP6036711B2 (en) * | 2014-01-08 | 2016-11-30 | トヨタ自動車株式会社 | Pull-up type continuous casting apparatus and pull-up type continuous casting method |
| JP6701615B2 (en) | 2014-03-10 | 2020-05-27 | トヨタ自動車株式会社 | Pull-up continuous casting apparatus and pull-up continuous casting method |
| JP5915678B2 (en) | 2014-03-10 | 2016-05-11 | トヨタ自動車株式会社 | Pull-up type continuous casting apparatus and pull-up type continuous casting method |
| JP2015167989A (en) * | 2014-03-10 | 2015-09-28 | トヨタ自動車株式会社 | Drawing-up type continuous casting method |
| JP6156222B2 (en) | 2014-03-28 | 2017-07-05 | トヨタ自動車株式会社 | Pull-up continuous casting method and pull-up continuous casting apparatus |
| JP6265172B2 (en) * | 2015-06-15 | 2018-01-24 | 株式会社豊田中央研究所 | Pull-up continuous casting equipment |
-
1987
- 1987-02-13 JP JP2981987A patent/JPS63199050A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63199050A (en) | 1988-08-17 |
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