JPS62238339A - Melting method for alloy - Google Patents
Melting method for alloyInfo
- Publication number
- JPS62238339A JPS62238339A JP7979686A JP7979686A JPS62238339A JP S62238339 A JPS62238339 A JP S62238339A JP 7979686 A JP7979686 A JP 7979686A JP 7979686 A JP7979686 A JP 7979686A JP S62238339 A JPS62238339 A JP S62238339A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- melting
- electrode
- electrodes
- alloy
- 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.)
- Pending
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 31
- 239000000956 alloy Substances 0.000 title claims abstract description 31
- 238000002844 melting Methods 0.000 title claims abstract description 27
- 230000008018 melting Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract 2
- 239000007769 metal material Substances 0.000 claims description 11
- 229910052758 niobium Inorganic materials 0.000 abstract description 7
- 229910052719 titanium Inorganic materials 0.000 abstract description 6
- 150000002739 metals Chemical class 0.000 abstract description 3
- 229910001257 Nb alloy Inorganic materials 0.000 abstract 2
- 239000010955 niobium Substances 0.000 description 23
- 239000010936 titanium Substances 0.000 description 18
- 238000004090 dissolution Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000155 melt Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910020012 Nb—Ti Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical class NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、ニオブ（Ｎｂ）−チタン（Ｔｉ）合金等の
合金の製造方法に関し、特に、Ｎｂ等の融点が品い方の
金属材料の溶は残りがない高品質の合金を製造ηる方法
に関Ｊ８゜
［従来の技術ｌ
Ｎｂ−Ｔｉ合金は、近時、例えば直径が１０μｍ以下の
超伝導ｌｌＩ線として需要が多い。通常、構造用４４石
としてのＮｂは、プレスによりコンパクト成形し、この
コンバク１−を消耗電極どして真空アーク炉により溶解
している。しかし、Ｎ ｂ−Ｔｉ合金において、Ｎｂの
含有量が１０重量％以上になると、ＮｂのΦ的比率が大
きくなり過ぎてプレスによるコンパクト成形が不可能で
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing an alloy such as a niobium (Nb)-titanium (Ti) alloy, and in particular to a method for producing an alloy such as a niobium (Nb)-titanium (Ti) alloy. Concerning a method for producing high quality alloys with no melting residue [Prior art] Nb-Ti alloys are recently in high demand as superconducting III wires with a diameter of 10 μm or less, for example. Normally, Nb as a structural stone is compactly formed by pressing, and then melted in a vacuum arc furnace using this consumable electrode as a consumable electrode. However, in the Nb-Ti alloy, when the Nb content is 10% by weight or more, the Φ ratio of Nb becomes too large, making compact molding by pressing impossible.
このため、Ｎｂ含有吊が約５０％以上である超伝導用Ｎ
ｂ−Ｔｉ合金の場合には、第４図（ａ）乃至（ｅ）に示
寸ように方法で溶解されている。For this reason, superconducting N with a Nb content of about 50% or more
In the case of b-Ti alloy, it is melted by the method shown in FIGS. 4(a) to 4(e).
先ず、第４図（ａ＞に示ずように、Ｔｉ板１とＮｂ板２
とを合金成分目標値に見合う形状に切断し、これらの板
を第４図（ｂ）に示１゛ように多数重ね合わせて溶解素
材３を作る。次いで、この溶解素＋４３を第４図（Ｃ）
に示づように、真空アーク炉４に消耗電極５として設置
し、溶解素材３（消耗電極５）と真空アーク炉４の鋳型
６との間にア−りを形成する。これにより、電極５を溶
解して鋳型６に鋳込み、インゴット７を製造する。その
後、このインゴット７を、第４図（ｄ＞に示す゛ように
、複数個について溶接固定してブ［］ツク８を青、第４
図（ｅ）に示１ように、このブロック８を消耗主働とし
て真空アーク炉４で再溶解する。これにより、Ｎｂ−Ｔ
ｉ合金のインゴット９を得る。First, as shown in FIG. 4 (a), a Ti plate 1 and a Nb plate 2 are
The molten material 3 is prepared by cutting these plates into a shape that matches the target value of the alloy composition, and stacking a large number of these plates as shown in FIG. 4(b). Next, this lysin +43 is converted to Fig. 4 (C)
As shown in FIG. 2, a consumable electrode 5 is installed in the vacuum arc furnace 4, and an arc is formed between the melted material 3 (consumable electrode 5) and the mold 6 of the vacuum arc furnace 4. Thereby, the electrode 5 is melted and cast into the mold 6, and an ingot 7 is manufactured. Thereafter, a plurality of ingots 7 are welded and fixed as shown in FIG.
As shown in FIG. 1 (e), this block 8 is remelted in a vacuum arc furnace 4 as a consumable material. As a result, Nb-T
An ingot 9 of i-alloy is obtained.
［発明が解決しようとする問題点１
しかしながら、この従来の溶解方法には、先ず、溶解素
材を必要とするために製造コストが高く、作業効率が悪
いという欠点がある。つまり、Ｎｂ板及びＴｉ板を夫々
所定の寸法の板幅にきり揃える必要があるため、歩留ま
りが低く、元来Ｎｂ及びＴｉが高価であることに加えて
歩醒まりが低いことによりＮｂ−Ｔｉ合金の製造コスト
が極めて高い。また、Ｎｂ板及びＴｉ板を重ね合わせて
溶接で固定する必要があるため、作業が繁雑であり、溶
接時の雰囲気又は電極により合金が汚染されるおそれが
あるので、作業性が極めて低い。[Problem to be Solved by the Invention 1] However, this conventional melting method has the disadvantages of high manufacturing cost and poor working efficiency because it requires a melting material. In other words, it is necessary to trim the Nb plate and the Ti plate to a predetermined width, so the yield is low. The manufacturing cost of the alloy is extremely high. Furthermore, since it is necessary to overlap the Nb plate and the Ti plate and fix them by welding, the work is complicated, and the alloy may be contaminated by the atmosphere or electrode during welding, so the workability is extremely low.
一方、従来の溶解方法においては、Ｎｂ及びＴｉを均一
に溶解させることが困難である。、Ｎｂは王ｉよりも融
点が約８００℃高い。このため、Ｎ［）板及びＴｉ板を
・重ね合わせた溶［１４を電極としてアーク溶解した場
合には、融点が低い１′１が選択的に溶解してしまう現
家が発生覆る６従って、Ｎｂ板がその下端で規則的に溶
解′ｔ！す、小片等の固相のまま鋳型内に落下してしま
うことがある。On the other hand, in conventional melting methods, it is difficult to uniformly dissolve Nb and Ti. , Nb has a melting point about 800°C higher than that of King I. For this reason, when arc melting is performed using a stack of N plates and Ti plates as an electrode, 1'1 with a low melting point is selectively melted. The Nb plate regularly melts at its lower end! In some cases, the solid phase, such as small pieces, may fall into the mold.
そう１」ると、冷却されている鋳型内に存在するＮｂ−
Ｔｉ合金の溶融プール内で、Ｎｂ小片は溶解し難く凝固
界面に捕捉されて溶は残る。このように湿【ツ残ったＮ
ｂは、例え、１１ＩＭ以下の微粒子であっても、後工
程の二次溶解及び三次溶解において溶解されず、インゴ
ット製品に残存する。そうすると、このインゴット製品
を極細線に線引きする際に、溶は残ったＮｂ微粒子が加
工時の破断の要因になる。If so, the Nb-
In the molten pool of the Ti alloy, Nb particles are difficult to dissolve and are trapped at the solidification interface, leaving the molten metal behind. This is how wet [tsu remained N]
Even if the particle b is 11 IM or less, it remains in the ingot product without being dissolved in the secondary and tertiary melting steps in the subsequent steps. Then, when this ingot product is drawn into an ultra-fine wire, the fine Nb particles remaining in the melt become a cause of breakage during processing.
この発明は、かかる事情にＬみてなされたものであって
、成分素材の訂【）残りが発生せずに合金組成が均一に
混合され、溶解中の汚染が抑制され、低コストで溶解す
ることができる合金の溶解方法を提供することを目的と
１−る。This invention was made in view of the above circumstances, and it is possible to uniformly mix the alloy composition without causing any residue of component materials, suppress contamination during melting, and melt at low cost. The purpose of the present invention is to provide a method for melting alloys that allows for the melting of alloys.
１問題点を解決するための手段］
この発明にかかる合金の溶解方法は、第１４１の金属材
料からなる電極と第２種の金属材料からなる電極とをチ
ャンバ内に設置し、これらの電極と鋳型との間にアーク
を形成し、電極先端を溶解して鋳型内に鋳込み、爾後、
各電極の電流密度を制御しつつ電極と鋳型内溶湯との間
にアークを形成することを特徴とする。Means for Solving Problem 1] The method for melting an alloy according to the present invention includes installing an electrode made of the 141st metal material and an electrode made of the second type metal material in a chamber, and dissolving these electrodes. An arc is formed between the electrode and the mold, the tip of the electrode is melted and poured into the mold, and then
It is characterized by forming an arc between the electrodes and the molten metal in the mold while controlling the current density of each electrode.
［作用１
この発明によれば、チャンバ内で第１種の金属材料から
なる電極と、第２種の金属材料からなる電極とが同時に
アークにより溶解される。これらの金属材料の溶湯は鋳
型内で混合され、この溶湯ブールは鋳型により冷却され
て凝固し、所望の合金インゴットが製造される。この場
合に、各電極の電流密度を個別に制御することにより、
第１種の金属材料及び第２種の金属材料の溶解量を個別
に制御することができ、所望の組成の合金を得ることが
できる。従って、予め、第１種の金属材料と第２種の金
属材料とを所望の組成になるように切り１１ηえて溶解
素材を用意ダるということが不要であるので、製造コス
トが低いと共に、作業が繁雑になることがない。また、
各金属Ｈ科を確実に溶解することができるので、溶は残
りが発生することがなく、線引き加工時の破断を防止す
ることができる。[Operation 1] According to the present invention, an electrode made of the first type of metal material and an electrode made of the second type of metal material are simultaneously melted by an arc in the chamber. The molten metal materials are mixed in a mold, and the molten boule is cooled and solidified by the mold to produce a desired alloy ingot. In this case, by individually controlling the current density of each electrode,
The dissolved amounts of the first type of metal material and the second type of metal material can be individually controlled, and an alloy with a desired composition can be obtained. Therefore, it is not necessary to prepare the melted material by cutting the first type metal material and the second type metal material to have the desired composition in advance, so the manufacturing cost is low and the work is easy. is not complicated. Also,
Since each of the metals in the H group can be reliably melted, no residual melt remains, and breakage during wire drawing can be prevented.
［実施例］
以下、添付の図面を参照してこの発明の実施例について
具体的に説明ダる。第１図はこの発明の第１の実施例を
示づ一０真空アーク溶解炉のチャンバ１０が、水冷され
た銅製鋳型１１の上に設置されている。このチャンバ１
０は適宜の排気手段に連結されていて、チャンバ１０及
び鋳型１１に囲まれた空間が低圧（例えば、１０″ｚト
ル）に保持されるようになっている。鋳型１１の外側に
は、溶湯撹拌用の磁場を鋳型１１内の溶湯１３に印加す
るコイル１２が配設されている。[Embodiments] Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the invention, in which a vacuum arc melting furnace chamber 10 is placed over a water-cooled copper mold 11. This chamber 1
0 is connected to a suitable exhaust means so that the space surrounded by the chamber 10 and the mold 11 is maintained at a low pressure (for example, 10"z Torr). A coil 12 is provided that applies a magnetic field for stirring to the molten metal 13 in the mold 11.
ヂｔ・ンバ１０の上壁には、１対の導電性支持棒１５．
１６がその下半部をチャンバ１０内に挿入して適宜の絶
縁性部材を介１ノで支持されている。A pair of conductive support rods 15.
16 is inserted with its lower half into the chamber 10 and supported via a suitable insulating member.
この支持棒１５．１６はその長手方向を鉛直にして配設
されており、下端に、夫々、純Ｔｉ丸棒であるＴｉ電極
１７及び純Ｎ Ｉ）丸棒であるＮｂ電極１８が固定いれ
ている。支持棒１５．１６には、人々直流電源１９．２
０の負端子が接続されており、直流電源１９．２０の正
端子は鋳型１１に接続されている。これにより、電極１
７．１８と鋳型１１又は溶湯１３との間に直流電圧が印
加され、アーク２２が形成される。アーク２２の熱にに
す、電極１７．１８の下端が溶＠すると、電極１７゜１
８が適宜の駆動手段により徐々に降Ｆされる。The support rods 15 and 16 are arranged with their longitudinal direction vertical, and a Ti electrode 17, which is a pure Ti round rod, and an Nb electrode 18, which is a pure Ni round rod, are fixed to their lower ends, respectively. There is. The support rod 15.16 has a direct current power supply 19.2
The negative terminal of DC power source 19 and 20 is connected to mold 11. As a result, electrode 1
A DC voltage is applied between 7.18 and the mold 11 or the molten metal 13, and an arc 22 is formed. When the lower ends of the electrodes 17 and 18 melt due to the heat of the arc 22, the electrodes 17°1
8 is gradually lowered by an appropriate driving means.
溶解速度検出装置２１は支持棒１５．１６に転勤するロ
ーラを有し、支持棒１５．１６、即ち電極１７．１８の
降下を個別的に検出してその溶解速度を検出する。The dissolution rate detection device 21 has a roller that is transferred to the support rod 15.16 and detects the descent of the support rod 15.16, ie the electrode 17.18, individually to determine its dissolution rate.
次に、このように構成された装置の動作について説明す
る。消耗電極１８として、例えば、直径が２５１１のｌ
１４Ｎｂ丸棒を設置し、消耗電極１７として、例えば、
直径が３６．５ｎＩｌの純Ｔｉ丸棒を設置づる。鋳型底
面にＮｂ−Ｔｉ合金胃アーク開始板（図示せｆ）を載置
した後、−１ヤンバ１０内を１０−２ トルの真空下に
保持し、電極下端とｊ７−り聞始板との間にアーク２２
を形成慢−る。このアーク２２の熱により電極１７．１
８のト端が溶融し、溶温か鋳型１１に溜る。爾後、Ｊの
溶湯１３ど電極１７．１８との間でアークが形成され、
電極が溶解して次第にその長さが知くなる。溶湯１３は
」イル１２から発生覆゛る磁場により撹拌されつつ鋳型
１１により冷却されて凝固し、Ｎｂ−Ｔ１インゴット１
４が鋳造される。この場合に、電極の溶解につれて溶湯
湯面と電極下端どの間の距離が一定になるように電極が
下降駆動される。Next, the operation of the device configured in this way will be explained. As the consumable electrode 18, for example, a diameter of 2511 l is used.
A 14Nb round bar is installed as the consumable electrode 17, for example.
A pure Ti round rod with a diameter of 36.5 nIl is installed. After placing the Nb-Ti alloy gastric arc starting plate (f not shown) on the bottom of the mold, the inside of the -1 yenbar 10 is maintained under a vacuum of 10-2 Torr, and the lower end of the electrode and the j7-yield starting plate are between arc 22
Forming and arrogant. The heat of this arc 22 causes the electrode 17.1 to
8 is melted, and the molten liquid accumulates in the mold 11. After that, an arc is formed between the molten metal 13 and the electrodes 17 and 18 of J,
As the electrode melts, its length gradually becomes known. The molten metal 13 is cooled and solidified by the mold 11 while being stirred by the surrounding magnetic field generated from the Nb-T1 ingot 1.
4 is cast. In this case, as the electrode melts, the electrode is driven downward so that the distance between the molten metal surface and the lower end of the electrode becomes constant.
溶解速度検出装置２１は電極１７．１８の溶解速度を検
出し、この溶解速度ツメ電極１７．１８で同一になるよ
うに直流電源１９．２０からの電流密度が調節される。The dissolution rate detection device 21 detects the dissolution rate of the electrode 17.18, and the current density from the DC power source 19.20 is adjusted so that the dissolution rate is the same at the dissolution rate claw electrode 17.18.
このようにして、Ｔｉ電極１７に１００ＯＡ、Ｎｂ電極
１８に４７００Ａ３１Ｔｌ電して、内径が１００１１１
の水冷銅鋳型１１にＮｂ−Ｔｉ合金をｌ造したところ、
陥析及び溶は残りがないＮｂ−Ｔｉ合金（Ｎｂ４７％：
Ｔｉ５３％）を得ることができた。In this way, by applying 100OA to the Ti electrode 17 and 4700A31T to the Nb electrode 18, the inner diameter was 100111.
When Nb-Ti alloy was made in the water-cooled copper mold 11,
Nb-Ti alloy (Nb47%:
53% Ti) was obtained.
次に、この発明の第２の実施例について、第２図及び第
３図を参照して説明する。この実施例は、連続鋳造型の
溶解方法についてのものである。チャンバ３０内に、筒
状の鋳型が設置されており、この鋳型３１内には、引き
抜き装置３２のダミーバ３３が嵌入されている。このダ
ミーバ３３の上には、所望の組成のｌ’Ｊｂ−Ｔｉ合金
からなるアーク開始板３４が載置されている。純Ｔｉの
丸棒（例えば、直径２５１１＋１＞からなる消耗型＋￥
ｉ３５と、純Ｎｂの丸棒（例えば、直径３６．５＋ａｍ
）からなる消耗電極３６とが鋳型３１の上方に、例えば
、鉛直方向に４５度傾斜させて配設されている。これら
の電極３５．３６は夫々′＃電性の支持棒３７゜３８を
介してチャンバ３０の土壁に支持されている。雷４ｆｊ
３５，３６とダミーバ３３との間には、夫々、直流電源
３９．４０が接続されている。なお、支持棒３７．３８
には溶解速度の検出装置４１が取り付Ｃブられている。Next, a second embodiment of the present invention will be described with reference to FIGS. 2 and 3. This example concerns a method for melting a continuous casting mold. A cylindrical mold is installed in the chamber 30, and a dummy bar 33 of the extraction device 32 is fitted into the mold 31. An arc initiation plate 34 made of l'Jb-Ti alloy having a desired composition is placed on the dummy bar 33. A round bar of pure Ti (e.g., a consumable type with a diameter of 2511+1)
i35 and pure Nb round bar (for example, diameter 36.5+am
) is disposed above the mold 31 at an angle of 45 degrees in the vertical direction, for example. These electrodes 35 and 36 are supported on the earthen walls of the chamber 30 via electrically conductive support rods 37 and 38, respectively. thunder 4fj
DC power supplies 39 and 40 are connected between 35 and 36 and the dummy bar 33, respectively. In addition, support rod 37.38
A dissolution rate detection device 41 is attached to the holder.
また、鋳型３１の外側には磁ＩＴて１用のコイル４５が
配設されて＆３す、これにより鋳型内の溶湯を電磁撹拌
するようになっている。Further, a coil 45 for the magnetic IT 1 is disposed outside the mold 31, so that the molten metal in the mold is electromagnetically stirred.
この第２の実施例にＪ３いても、直流電源３９゜４０か
ら電極３５．３６とアーク開始板３４との間に給電でる
と、アーク４２が形成される。このアーク４２により電
＋１ｉ３５．３６の下端が溶融し、融液が鋳型３１内に
鋳込まれる。溶解が進行すると、第３図に示すように、
電極３５．３６の下端が鋳型３１の間口上縁に位置する
ように電極３５゜３６が下降駆動される。一方、鋳型３
１内の溶湯４３はコイル４５から発生するｌｉｌ＆場に
より撹拌されつつ鋳型３１により冷加されで凝固し、Ｎ
ｂ−Ｔｉインゴット４４が鋳造される。引き抜、、！装
置３２のダミーバ３３は連続的に下降し、インゴット４
４が下方に引き抜かれる。この実施例においても、内径
が１５０＋ｏｎの鋳型を使用し、電極３５゜３６にお（
プる溶解速度が一定になるように各電極に流れる電流を
制御し！こところ、Ｎｂ４７％−丁１５３％の均一なイ
ンゴットが連続的に鋳造された。この１５合のＴｉ電十
の通電電流は１０００Ａであり、Ｎｂ電極の通電電流は
４７００Ａであつ ノこ 。Even in this second embodiment, an arc 42 is formed when power is supplied between the electrodes 35, 36 and the arc initiation plate 34 from the DC power supply 39.40. This arc 42 melts the lower end of the electrode 35.36, and the melt is cast into the mold 31. As the dissolution progresses, as shown in Figure 3,
The electrodes 35 and 36 are driven downward so that the lower ends of the electrodes 35 and 36 are located at the upper edge of the opening of the mold 31. On the other hand, mold 3
The molten metal 43 in the coil 45 is cooled and solidified by the mold 31 while being stirred by the lil & field generated by the coil 45.
A b-Ti ingot 44 is cast. Pull it out! The dummy bar 33 of the device 32 is continuously lowered and the ingot 4
4 is pulled downward. In this example as well, a mold with an inner diameter of 150+ on is used, and the electrodes are placed at 35° and 36° (
Control the current flowing through each electrode so that the dissolution rate is constant! At this time, uniform ingots of 47% Nb and 153% Nb were continuously cast. The current flowing through the 15-meter Ti electrode was 1000 A, and the current flowing through the Nb electrode was 4700 A.
なＪ３、この実施例において、電極３５．３６はぞの長
手方向が鉛直方向に対して傾斜するように配設されるが
、これに限らず、長手方向が鉛直になるように電極３５
．３６を設置してもよい。J3, in this embodiment, the electrodes 35 and 36 are arranged so that their longitudinal directions are inclined with respect to the vertical direction; however, the electrodes 35 and 36 are arranged so that their longitudinal directions are vertical.
．． 36 may be installed.
また、上記いずれの実施例においても、合金組成の調整
は、電極の長さの減少速度又は消耗速度（ａｍ、、、／
分）が各電極について同一になるように通電電流を調整
し、電極の断面積（直径）を成分濃度（Ｎｂ：４７％−
Ｔｉ；５３％）に応じて選定するか、又は、電極の溶融
速度（ｋｇ／分）が成分濃度に応じて所定の速度になる
ように、各電極の電流密度及び電極の送り速度を個別的
に調整すればよい。Furthermore, in any of the above embodiments, the adjustment of the alloy composition is the rate of decrease in the length of the electrode or the rate of wear (am, , /
The applied current was adjusted so that the current was the same for each electrode, and the cross-sectional area (diameter) of the electrode was adjusted so that the component concentration (Nb: 47% -
Ti; 53%), or the current density and feed rate of each electrode can be adjusted individually so that the melting rate (kg/min) of the electrode is a predetermined rate depending on the component concentration. Just adjust it.
更に、直流電源に限らず、交流電源によっても電極を溶
解することができることは勿論である。Furthermore, it goes without saying that the electrodes can be melted not only by a DC power source but also by an AC power source.
この場合に、交流の位相をずらすか、又は直流電源を重
畳させることにより、アーク放電が安定的に維持される
ように１にとが好ましい。In this case, it is preferable to shift the phase of the alternating current or to superimpose the direct current power so that the arc discharge can be stably maintained.
更にまた、コイル１２．４５により、鋳型内の溶湯を電
磁撹拌することは必ずしし必要ではない。Furthermore, it is not absolutely necessary to electromagnetically stir the molten metal in the mold by the coil 12.45.
［発明の効果１
この発明によれば、金属Ｈ料の溶ＣＪ残りが＜’Ｋ ＜
、溶解月利の汚染が抑制される。また、溶解木材を予め
用意１Ｊることか不要であるので、高品質の合金を低コ
ス１〜で製Ｂ 、ｌることができる。[Effect of the invention 1 According to this invention, the melt CJ residual of the metal H material is <'K <
, the pollution of dissolved monthly interest is suppressed. Furthermore, since it is not necessary to prepare melted wood in advance, a high quality alloy can be produced at a low cost of 1~1.
第１図はこの発明の第１の実施例を示す図、第２図及び
第３図はこの発明の第２の実施例を示す図、第４図（ａ
）乃至（ｅ）は従来のＮｂ−Ｔｉ合金の製造方法を示１
模式図である。。
１０．３０：チャンバ、１１．３１：鋳型、１３゜４３
：溶湯、１４．４１インゴツト、１７，１８．３５，３
６：電極、１９．２０，３９，４０；直流電源、２２．
４２：アーク
出願人代理人 弁理士 鈴江武彦
第２図
第３図
第４図
特許庁長官 宇 賀 道 部 殿
１、事件の表示
特願昭６１−７９７９６号
２、発明の名称
合金の溶解方法
３、補正をする者
事件との関係 特許出願人
（４１２） 日本鋼管株式会社
４、代理人
＼、−一／’
７、補正の内容
明細書第２頁、第５行目にｌ’−Ｎｂｊとあるのを、［
ＴｉＪに訂正する。FIG. 1 shows a first embodiment of the invention, FIGS. 2 and 3 show a second embodiment of the invention, and FIG.
) to (e) show the conventional manufacturing method of Nb-Ti alloy 1
It is a schematic diagram. . 10.30: Chamber, 11.31: Mold, 13°43
: Molten metal, 14.41 ingot, 17, 18.35, 3
6: Electrode, 19.20, 39, 40; DC power supply, 22.
42: Ark Applicant's Representative Patent Attorney Takehiko Suzue Figure 2 Figure 3 Figure 4 Commissioner of the Patent Office Michibe Uga 1, Indication of Case Patent Application No. 1983-79796 2, Title of Invention Method for Melting Alloys 3 , Relationship with the case of the person making the amendment Patent applicant (412) Nippon Koukan Co., Ltd. 4, Agent ＼, -1/' 7. On page 2, line 5 of the statement of contents of the amendment, l'-Nbj There is [
Corrected by TiJ.
Claims (3)
料からなる電極とをチャンバ内に設置し、これらの電極
と鋳型との間にアークを形成し、電極先端を溶解して鋳
型内に鋳込み、爾後、各電極の電流密度を制御しつつ電
極と鋳型内溶湯との間にアークを形成することを特徴と
する合金の溶解方法。(1) An electrode made of a first type of metal material and an electrode made of a second type of metal material are installed in a chamber, an arc is formed between these electrodes and the mold, and the tip of the electrode is melted. A method for melting an alloy, which comprises casting the alloy into a mold and then forming an arc between the electrode and the molten metal in the mold while controlling the current density of each electrode.
の範囲第１項に記載の合金の溶解方法。(2) The method for melting an alloy according to claim 1, wherein the mold has a bottom.
の範囲第１項に記載の合金の溶解方法。(3) The method for melting an alloy according to claim 1, wherein the mold is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7979686A JPS62238339A (en) | 1986-04-07 | 1986-04-07 | Melting method for alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7979686A JPS62238339A (en) | 1986-04-07 | 1986-04-07 | Melting method for alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62238339A true JPS62238339A (en) | 1987-10-19 |
Family
ID=13700178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7979686A Pending JPS62238339A (en) | 1986-04-07 | 1986-04-07 | Melting method for alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62238339A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941066A (en) * | 2010-10-15 | 2011-01-12 | 哈尔滨工业大学 | Ceramic casting mold applied to metal casting under electric field treatment and method for casting titanium aluminum-based alloy by using same |
| CN109457119A (en) * | 2018-11-26 | 2019-03-12 | 抚顺特殊钢股份有限公司 | A kind of simple method of controlling of titanium alloy vacuum consumable melting current voltage matches |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60218437A (en) * | 1984-04-16 | 1985-11-01 | Nippon Kokan Kk <Nkk> | Arc melting method |
-
1986
- 1986-04-07 JP JP7979686A patent/JPS62238339A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60218437A (en) * | 1984-04-16 | 1985-11-01 | Nippon Kokan Kk <Nkk> | Arc melting method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941066A (en) * | 2010-10-15 | 2011-01-12 | 哈尔滨工业大学 | Ceramic casting mold applied to metal casting under electric field treatment and method for casting titanium aluminum-based alloy by using same |
| CN109457119A (en) * | 2018-11-26 | 2019-03-12 | 抚顺特殊钢股份有限公司 | A kind of simple method of controlling of titanium alloy vacuum consumable melting current voltage matches |
| CN109457119B (en) * | 2018-11-26 | 2021-05-14 | 抚顺特殊钢股份有限公司 | Simple control method for titanium alloy vacuum consumable remelting current and voltage matching |
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