JPH07252544A - Method for rapidly melting hyper-eutectic al-si base alloy and apparatus therefor - Google Patents
Method for rapidly melting hyper-eutectic al-si base alloy and apparatus thereforInfo
- Publication number
- JPH07252544A JPH07252544A JP3997194A JP3997194A JPH07252544A JP H07252544 A JPH07252544 A JP H07252544A JP 3997194 A JP3997194 A JP 3997194A JP 3997194 A JP3997194 A JP 3997194A JP H07252544 A JPH07252544 A JP H07252544A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- hypereutectic
- melting
- molten metal
- flame
- 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
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、過共晶Ａｌ−Ｓｉ系合
金を急速溶解するのに利用される過共晶Ａｌ−Ｓｉ系合
金の急速溶解方法および急速溶解装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapid melting method and a rapid melting apparatus for a hypereutectic Al-Si alloy used for rapidly melting a hypereutectic Al-Si alloy.
【０００２】[0002]
【従来の技術】Ａｌ−Ｓｉ系合金は、図５の状態図に示
すように、共晶温度が約５７７℃であり、共晶点のＳｉ
含有量は約１１．３原子％（約１１．７重量％）であっ
て、共晶付近の合金はシルミン（ｓｉｌｕｍｉｎ）とし
て良く知られている。2. Description of the Related Art An Al--Si alloy has a eutectic temperature of about 577 ° C. as shown in the state diagram of FIG.
The content is about 11.3 atomic% (about 11.7% by weight), and an alloy near the eutectic is well known as silumin.
【０００３】このＡｌ−Ｓｉ系合金（Ｓｉのほか、Ｎ
ｉ，Ｍｇ，Ｃｕ，Ｍｎ等を添加して改良したものもあ
る）は、湯流れ性が良好であり、鋳肌もきれいで鋳物用
合金としてきわめてすぐれているうえ、耐食性が良く、
軽量で熱膨張係数も小さく、熱および電気の伝導性が良
いなどの多くの利点をもっていることから、広く実用に
供されている。This Al--Si alloy (Si, N,
i, Mg, Cu, Mn, etc. are also added) and have good melt flowability, a clean casting surface, are extremely excellent as an alloy for casting, and have good corrosion resistance.
Since it is lightweight, has a small coefficient of thermal expansion, and has good heat and electrical conductivity, it is widely used in practice.
【０００４】このようなＡｌ−Ｓｉ系合金を用いて鋳造
品を製造する場合には、まず、Ａｌ−Ｓｉ系合金を溶解
することから始まるが、この溶解に際しては、例えば、
図２に示すような急速溶解装置を用いることもあった。When a cast product is produced using such an Al--Si alloy, it first starts by melting the Al--Si alloy.
In some cases, a rapid melting device as shown in FIG. 2 was used.
【０００５】図２に示す急速溶解装置２１は、若干傾斜
した炉床２２の上部に、より大きく傾斜した溶解部２３
をそなえ、溶解部２３に装入したＡｌ−Ｓｉ系合金
（Ａ）を溶解するための火炎照射用バーナー２４をそな
えていると共に、炉床２２の下端部に連続して溶湯保持
部２５を有し、溶湯保持部２５内の合金溶湯（Ｃ）を所
定温度に保持する溶湯温度保持用バーナー２６をそなえ
ている。また、溶解部２３の上方には予熱部（予熱塔）
２７をそなえていると共に、Ａｌ−Ｓｉ系合金の投入口
２８および排熱ダクト２９をそなえた構造をなすもので
ある。The rapid melting apparatus 21 shown in FIG. 2 has a slightly tilted upper part of a hearth 22 and a larger tilted melting part 23.
And a burner 24 for flame irradiation for melting the Al-Si alloy (A) charged in the melting section 23, and a molten metal holding section 25 continuously provided at the lower end of the hearth 22. A burner 26 for holding the molten metal temperature (C) in the molten metal holding portion 25 is provided for holding the molten alloy temperature (C) at a predetermined temperature. Further, above the melting section 23 is a preheating section (preheating tower).
In addition to having the structure 27, the structure has a structure in which an Al-Si alloy input port 28 and an exhaust heat duct 29 are provided.
【０００６】また、図３は従来の急速溶解装置の他の例
を示すものであって、図３に示す急速溶解装置３１は、
傾斜した炉床３２に隣接して（図面手前側に）溶解部３
３をそなえ、溶解部３３に装入したＡｌ−Ｓｉ系合金
（Ａ）を溶解するための火炎照射用バーナー３４をそな
えていると共に、炉床３２の下端側に段部３５ａを介し
て溶湯保持部３５を有し、溶湯保持部３５内の合金溶湯
（Ｃ）を所定温度に保持する溶湯温度保持用バーナー３
６をそなえていると共に、隔壁３５ｂを介して汲出室３
７をそなえている。また、図面の手前側にある溶解部３
３の上方には予熱部（溶解タワー室）３８をそなえてい
ると共に、Ａｌ−Ｓｉ系合金の投入口３９を有する構造
をなすものである（特開平２−１９２５８７号公報）。Further, FIG. 3 shows another example of the conventional rapid melting apparatus. The rapid melting apparatus 31 shown in FIG.
Adjacent to the slanted hearth 32 (on the front side of the drawing) the melting section 3
3, a flame irradiation burner 34 for melting the Al-Si alloy (A) charged in the melting portion 33 is provided, and the molten metal is held at the lower end side of the hearth 32 through a step 35a. Molten metal temperature holding burner 3 having a portion 35 and holding the molten alloy (C) in the molten metal holding portion 35 at a predetermined temperature.
6 and the pumping chamber 3 through the partition wall 35b.
It has 7. In addition, the melting portion 3 on the front side of the drawing
A preheating part (melting tower chamber) 38 is provided above 3 and a structure having an inlet 39 for an Al-Si alloy is formed (JP-A-2-192587).
【０００７】さらに、図４は従来の急速溶解装置のさら
に他の例を示すものであって、図４に示す急速溶解装置
４１は、傾斜した炉床４２の上部が溶解部４３に形成さ
れていると共に、溶解部４３に装入したＡｌ−Ｓｉ系合
金（Ａ）を溶解するための火炎照射用バーナー４４をそ
なえ、炉床４２の下端に連続して溶湯保持部４５を有
し、溶湯保持部４５内の合金溶湯（Ｃ）を所定温度に保
持する溶湯温度保持用バーナー４６をそなえている。FIG. 4 shows still another example of the conventional rapid melting apparatus. In the rapid melting apparatus 41 shown in FIG. 4, the upper part of the inclined hearth 42 is formed in the melting section 43. In addition, it has a flame irradiation burner 44 for melting the Al-Si alloy (A) charged in the melting portion 43, has a molten metal holding portion 45 continuously at the lower end of the hearth 42, and holds the molten metal. A molten metal temperature holding burner 46 for holding the molten alloy (C) in the portion 45 at a predetermined temperature is provided.
【０００８】また、溶湯保持部４５内の合金溶湯（Ｃ）
を溶解部４３に移して溶解部４３内にあるＡｌ−Ｓｉ系
合金（Ａ）に高温の合金溶湯（Ｃ）を注湯して液相伝熱
によりＡｌ−Ｓｉ系合金（Ａ）を急速加熱するための溶
湯輸送路４７および電磁ポンプ４８をそなえ、溶解部４
３の上方には予熱部（予熱塔）４９をそなえていると共
に、予熱部４９の上端に材料投入口５０および煙道５１
を設けた構造をなすものである（特開昭５２−６０２０
５号公報）。Further, the molten alloy (C) in the molten metal holding portion 45
Is transferred to the melting portion 43, the high temperature alloy melt (C) is poured into the Al-Si alloy (A) in the melting portion 43, and the Al-Si alloy (A) is rapidly heated by liquid phase heat transfer. The molten metal transport path 47 and the electromagnetic pump 48 for
A preheating part (preheating tower) 49 is provided above 3 and a material inlet 50 and a flue 51 are provided at the upper end of the preheating part 49.
Is provided (Japanese Patent Laid-Open No. 52-6020).
No. 5).
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、このよ
うな図２〜図４に示した急速溶解装置２１，３１，４１
を用いて過共晶Ａｌ−Ｓｉ系合金を溶解した場合に、例
えば、火炎照射用バーナー２４，３４，４４からの火炎
がＡｌ−Ｓｉ系合金（Ａ）に直接当たった場合には、加
熱溶解されることによって過共晶Ａｌ−Ｓｉ系合金と同
じＳｉ濃度の合金溶湯となって流下するが、前記火炎が
Ａｌ−Ｓｉ系合金（Ａ）に直接当たらず、熱伝導などに
よって温度が６００℃近辺に加熱された部分が生ずると
きには、共晶温度が約５７７℃である融点の低い共晶部
分が優先して溶解されることがあり、この溶解された共
晶部分が溶湯保持部２５，３５，４５に流れることか
ら、高融点でかつ高Ｓｉ含有量の未溶解材よりなる溶け
残り（図２〜４に示す符号（Ｂ）で示す未溶解材よりな
る溶け残り）が炉床２２，３２，４２の上に大量に発生
することがあるという問題点があった。However, the rapid melting apparatus 21, 31, 41 shown in FIGS.
When a hypereutectic Al-Si alloy is melted by using, for example, when the flame from the flame irradiation burners 24, 34, 44 directly hits the Al-Si alloy (A), it is heated and melted. As a result, the molten alloy flows as an alloy melt having the same Si concentration as the hypereutectic Al-Si alloy, but the flame does not directly hit the Al-Si alloy (A), and the temperature is 600 ° C due to heat conduction or the like. When a heated portion occurs near the eutectic portion, the eutectic portion having a low eutectic temperature of about 577 ° C. may be preferentially melted, and the melted eutectic portion may be melted. , 45, the unmelted material made of the unmelted material having a high melting point and a high Si content (the unmelted material made of the unmelted material shown by the reference numeral (B) in FIGS. 2 to 4) causes the hearth 22, 22, 32. , 42 said to occur in large quantities There is a problem.
【００１０】また、図４に示した急速溶解装置４１にお
いても、合金溶湯（Ｃ）が十分に形成されていないため
溶解部４３で合金溶湯（Ｃ）を注湯することができない
溶解初期の段階において、あるいは合金溶湯（Ｃ）が十
分に形成されたのち溶解部４３のＡｌ−Ｓｉ系合金
（Ａ）に注湯されたときでも温度が６００℃付近となっ
た部分が生ずる場合において、融点の低い共晶部分が優
先して溶解されることがあり、この共晶部分が溶湯保持
部４５に流れる結果、高融点でかつ高Ｓｉ含有量の未溶
解材（Ｂ）が発生して溶け残りとなることがあり、この
ような未溶解材（Ｂ）よりなる溶け残りは融点が高いた
めに溶湯輸送路４７より送給された合金溶湯（Ｃ）が注
湯されても溶解が困難であることがあるという問題点が
あり、このような問題点を解消することが課題であっ
た。Also in the rapid melting apparatus 41 shown in FIG. 4, since the molten alloy (C) is not sufficiently formed, the molten alloy (C) cannot be poured in the melting portion 43 in the initial stage of melting. Or when the molten metal (C) is sufficiently formed and then the molten metal is poured into the Al-Si based alloy (A) of the melting portion 43, a portion where the temperature is around 600 ° C. is generated. The low eutectic portion may be preferentially melted, and as a result of this eutectic portion flowing to the molten metal holding portion 45, an unmelted material (B) having a high melting point and a high Si content is generated, and unmelted remains. Since the unmelted residue made of such unmelted material (B) has a high melting point, it is difficult to melt even if the molten alloy (C) fed from the molten metal transport path 47 is poured. There is a problem that there is such a problem It was a challenge to overcome.
【００１１】[0011]
【発明の目的】本発明は、このような従来の課題にかん
がみてなされたものであって、過共晶Ａｌ−Ｓｉ系合金
に火炎を照射して急速溶解するに際し、高融点でかつ高
Ｓｉ含有量の未溶解材よりなる溶け残り部分が発生せ
ず、投入した過共晶Ａｌ−Ｓｉ系合金とＳｉ濃度が同一
である合金溶湯を得ることができるようにすることを目
的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems and has a high melting point and a high Si content when a hypereutectic Al--Si alloy is irradiated with a flame for rapid melting. It is an object of the present invention to make it possible to obtain an alloy melt having the same Si concentration as the supplied hypereutectic Al-Si alloy, without any unmelted portion consisting of unmelted material having the content.
【００１２】[0012]
【課題を解決するための手段】本発明に係わる過共晶Ａ
ｌ−Ｓｉ系合金の急速溶解方法は、過共晶Ａｌ−Ｓｉ系
合金に火炎を照射して急速溶解するに際し、優先溶解さ
れた共晶部分を含む合金溶湯と高融点でかつ高Ｓｉ含有
量の未溶解材とで固液共存相を形成させ、前記未溶解材
を溶湯部分に拡散・溶解させて合金溶湯とする構成とし
たことを特徴としている。Hypereutectic A according to the present invention
The method for rapid melting of an 1-Si alloy is a method of rapidly melting an hypereutectic Al-Si alloy by irradiating a flame with a molten alloy containing a preferentially melted eutectic portion, a high melting point, and a high Si content. It is characterized in that a solid-liquid coexisting phase is formed with the undissolved material, and the undissolved material is diffused and dissolved in the molten metal portion to form an alloy molten metal.
【００１３】そして、本発明に係わる過共晶Ａｌ−Ｓｉ
系合金の急速溶解方法の実施態様においては、過共晶Ａ
ｌ−Ｓｉ系合金を火炎の排熱により予熱する構成とする
ことができ、また、拡散・溶解させて得た合金溶湯を溶
湯保持部に流して所定温度でかつ溶解前の過共晶Ａｌ−
Ｓｉ系合金と同一Ｓｉ濃度の合金溶湯を得る構成とする
ことができる。The hypereutectic Al--Si according to the present invention
In an embodiment of the rapid melting method for a base alloy, hypereutectic A
The 1-Si alloy can be preheated by the exhaust heat of the flame, and the molten alloy obtained by diffusing and melting the molten alloy can be flowed to the molten metal holding portion to be a hypereutectic Al-before melting at a predetermined temperature.
It is possible to obtain a molten alloy having the same Si concentration as the Si-based alloy.
【００１４】また、本発明に係わる過共晶Ａｌ−Ｓｉ系
合金の急速溶解装置は、火炎照射用バーナーと、前記火
炎照射用バーナーからの火炎により過共晶Ａｌ−Ｓｉ系
合金が急速溶解される溶解部と、優先溶解された共晶部
分を含む合金溶湯と高融点でかつ高Ｓｉ含有量の未溶解
材とで固液共存相を形成させて未溶解材を溶湯部分に拡
散・溶解させて合金溶湯とする湯溜り部と、湯溜り部か
ら流れた合金溶湯を保持する溶湯保持部をそなえた構成
としたことを特徴としている。In the rapid eutectic Al--Si alloy melting apparatus according to the present invention, the hypereutectic Al--Si alloy is rapidly melted by the flame irradiation burner and the flame from the flame irradiation burner. To form a solid-liquid coexisting phase with the melted part, the molten alloy containing the preferentially melted eutectic part, and the unmelted material having a high melting point and a high Si content to diffuse and melt the unmelted material in the molten metal part. The present invention is characterized in that it has a configuration in which a molten metal reservoir for holding molten alloy and a molten metal holding portion for retaining molten alloy flowing from the molten metal pool are provided.
【００１５】そして、本発明に係わる過共晶Ａｌ−Ｓｉ
系合金の急速溶解装置の実施態様においては、過共晶Ａ
ｌ−Ｓｉ系合金を火炎照射用バーナーの排熱により予熱
する予熱部をそなえた構成とすることができ、また、火
炎照射用バーナーの火炎照射軸を湯溜り部に向けて設定
した構成とすることもでき、さらにまた、溶湯保持部に
溶湯温度保持用バーナーを設けた構成とすることもでき
る。The hypereutectic Al--Si according to the present invention
In the embodiment of the rapid melting apparatus for base alloys, hypereutectic A
The 1-Si alloy can be configured to have a preheating unit for preheating by exhaust heat of the flame irradiation burner, and the flame irradiation axis of the flame irradiation burner is set to face the basin. Alternatively, the molten metal holding portion may be provided with a molten metal temperature holding burner.
【００１６】[0016]
【発明の作用】本発明に係わる過共晶Ａｌ−Ｓｉ系合金
の急速溶解方法は、過共晶Ａｌ−Ｓｉ系合金に火炎を照
射して急速溶解するに際し、優先溶解された共晶部分を
含む合金溶湯と高融点でかつ高Ｓｉ含有量の未溶解材と
で固液共存相を形成させ、前記未溶解材を溶湯部分に拡
散・溶解させて合金溶湯とする構成としたから、共晶部
分が優先溶解されることによって高融点でかつ高Ｓｉ含
有量の未溶解材が発生したとしても、この未溶解材は前
記優先溶解された共晶部分を含む合金溶湯と直接接触し
てこの優先溶解された共晶部分を含む合金溶湯とで固液
共存相を形成することとなり、未溶解材はこの合金溶湯
の部分に拡散・溶解されることとなって、合金溶湯とな
るので、高融点でかつ高Ｓｉの未溶解材は溶け残りとし
て残存しないこととなり、溶解前の過共晶Ａｌ−Ｓｉ系
合金と同一Ｓｉ濃度の過共晶Ａｌ−Ｓｉ系合金溶湯が得
られることとなる。The rapid melting method for a hypereutectic Al-Si alloy according to the present invention is characterized in that when a hypereutectic Al-Si alloy is irradiated with a flame for rapid melting, the preferentially melted eutectic portion is removed. Since a solid-liquid coexisting phase is formed by the molten alloy containing and the unmelted material having a high melting point and a high Si content, and the unmelted material is diffused / melted in the molten metal portion to form the molten alloy, the eutectic Even if an unmelted material having a high melting point and a high Si content is generated by preferentially melting the portion, this unmelted material directly contacts the molten alloy containing the preferentially melted eutectic portion A solid-liquid coexisting phase will be formed with the molten alloy containing the melted eutectic portion, and the unmelted material will be diffused and dissolved in this molten alloy portion to become the molten alloy. And high Si unmelted material should not remain as unmelted residue Becomes, hypereutectic Al-Si-based alloy melt of the same Si concentration and the hypereutectic Al-Si alloy before dissolution is to be obtained.
【００１７】そして、本発明に係わる過共晶Ａｌ−Ｓｉ
系合金の急速溶解方法の実施態様においては、過共晶Ａ
ｌ−Ｓｉ系合金を火炎の排熱により予熱するようにして
いるので、排熱の有効利用がなされると共に、過共晶Ａ
ｌ−Ｓｉ系合金の溶解がより一層速められることとな
る。また、同じく実施態様においては、拡散・溶解させ
て得た合金溶湯を溶湯保持部に流して適宜加熱すること
によって、所定温度を有しかつ溶解前の過共晶Ａｌ−Ｓ
ｉ系合金と同一Ｓｉ濃度の過共晶Ａｌ−Ｓｉ系合金溶湯
が得られることとなる。The hypereutectic Al--Si according to the present invention
In an embodiment of the rapid melting method for a base alloy, hypereutectic A
Since the 1-Si alloy is preheated by the exhaust heat of the flame, the exhaust heat can be effectively used and the hypereutectic A
The melting of the 1-Si alloy is further accelerated. Also, in the same embodiment, the hypereutectic Al-S having a predetermined temperature and having not yet melted has a predetermined temperature by flowing the alloy melt obtained by diffusion / melting into the melt holding portion and appropriately heating.
A hypereutectic Al-Si alloy melt having the same Si concentration as the i alloy can be obtained.
【００１８】また、本発明に係わる過共晶Ａｌ−Ｓｉ系
合金の急速溶解装置は、火炎照射用バーナーと、前記火
炎照射用バーナーからの火炎により過共晶Ａｌ−Ｓｉ系
合金が急速溶解される溶解部と、優先溶解された共晶部
分を含む合金溶湯と高融点でかつ高Ｓｉ含有量の未溶解
材とで固液共存相を形成させて未溶解材を溶湯部分に拡
散・溶解させて合金溶湯とする湯溜り部と、湯溜り部か
ら流れた合金溶湯を保持する溶湯保持部をそなえた構成
としたから、高融点でかつ高Ｓｉ含有量の未溶解材を残
存させることなく、溶解前の過共晶Ａｌ−Ｓｉ系合金と
同一Ｓｉ濃度を有する過共晶Ａｌ−Ｓｉ系合金溶湯に溶
解されることとなる。Further, the rapid eutectic Al--Si alloy melting apparatus according to the present invention rapidly melts the hypereutectic Al--Si alloy by the flame irradiation burner and the flame from the flame irradiation burner. To form a solid-liquid coexisting phase with the melted part, the molten alloy containing the preferentially melted eutectic part, and the unmelted material having a high melting point and a high Si content to diffuse and melt the unmelted material in the molten metal part. Since it has a configuration including a molten metal reservoir for holding the molten alloy flowing from the molten metal pool and a molten metal holding part for retaining the molten alloy flowing from the molten metal pool, without leaving unmelted material having a high melting point and a high Si content, It will be melted in the hypereutectic Al-Si alloy melt having the same Si concentration as the hypereutectic Al-Si alloy before melting.
【００１９】そして、本発明に係わる過共晶Ａｌ−Ｓｉ
系合金の溶解装置の実施態様においては、過共晶Ａｌ−
Ｓｉ系合金を火炎照射用バーナーの排熱により予熱する
予熱部をそなえた構成としたから、排熱の有効利用がな
されると共に、過共晶Ａｌ−Ｓｉ系合金の溶解がより一
層速められることとなる。また、同じく実施態様におい
ては、火炎照射用バーナーの火炎照射軸を湯溜り部に向
けて設定した構成としたから、湯溜り部が集中的に加熱
昇温されることとなるので、湯溜り部の溶湯が凝固する
ことなく過共晶Ａｌ−Ｓｉ系合金の溶解が連続して行わ
れることとなる。さらに、同じく実施態様においては、
溶湯保持部に溶湯温度保持用バーナーを設けた構成とし
たから、所定温度を有しかつ溶解前の過共晶Ａｌ−Ｓｉ
系合金と同一Ｓｉ濃度の過共晶Ａｌ−Ｓｉ系合金溶湯が
得られることとなる。The hypereutectic Al--Si according to the present invention
In an embodiment of the melting apparatus for the system-based alloy, the hypereutectic Al-
Since the Si-based alloy has a preheating section for preheating with the exhaust heat of the flame irradiation burner, the exhaust heat can be effectively utilized and the melting of the hypereutectic Al-Si-based alloy can be further accelerated. Becomes Further, in the same manner, in the embodiment, since the flame irradiation axis of the flame irradiation burner is set to face the hot water pool portion, the hot water pool portion is heated and raised in a concentrated manner. The hypereutectic Al—Si alloy is continuously melted without solidifying the molten metal. Further, in the same embodiment,
Since the molten metal holding part is provided with the burner for holding the molten metal temperature, the hypereutectic Al-Si having a predetermined temperature and before melting
A hypereutectic Al—Si alloy melt having the same Si concentration as that of the Al alloy can be obtained.
【００２０】[0020]
【実施例】図１は、本発明に係わる過共晶Ａｌ−Ｓｉ系
合金の急速溶解方法の実施に使用する過共晶Ａｌ−Ｓｉ
系合金の急速溶解装置を示すものであって、図１に示す
過共晶Ａｌ−Ｓｉ系合金の急速溶解装置１は、傾斜した
炉床部分２ａで形成される溶解部２をそなえていると共
に、溶解部２の炉床部分２ａの下端に連続する湯溜り部
３を設けており、湯溜り部３の前記溶解部２とは反対側
には隔壁４を介して溶湯保持部５を設けていて、溶湯保
持部５の端部に溶湯取出し口６が設けてある。EXAMPLE FIG. 1 shows a hypereutectic Al-Si used for carrying out a method for rapidly melting a hypereutectic Al-Si alloy according to the present invention.
1 shows a rapid melting apparatus for a system-based alloy, wherein a rapid eutectic apparatus 1 for a hypereutectic Al-Si system alloy shown in FIG. 1 has a melting section 2 formed by an inclined hearth part 2a. A continuous pool 3 is provided at the lower end of the hearth portion 2a of the melting unit 2, and a molten metal holding unit 5 is provided on the side of the pool 3 opposite to the melting unit 2 via a partition wall 4. A molten metal outlet 6 is provided at the end of the molten metal holding portion 5.
【００２１】また、火炎照射軸（Ｄ）が湯溜り部３に向
くように設定された火炎照射用バーナー７をそなえてい
ると共に、溶湯保持部５にも溶湯温度保持用バーナー８
を設けている。Further, the burner has a flame irradiation burner 7 in which the flame irradiation axis (D) is set to face the molten metal pool portion 3, and the molten metal holding portion 5 has a burner 8 for maintaining the molten metal temperature.
Is provided.
【００２２】さらにまた、溶解部２の上方には筒形状を
なす予熱部（予熱塔）９が設けてあり、予熱部９の上端
には材料投入口１０および排熱ダクト１１が設けてある
構造を有するものとなっている。Furthermore, a cylindrical preheating section (preheating tower) 9 is provided above the melting section 2, and a material inlet 10 and a waste heat duct 11 are provided at the upper end of the preheating section 9. It has become.
【００２３】このような構造を有する過共晶Ａｌ−Ｓｉ
系合金の急速溶解装置１を用いて、過共晶Ａｌ−Ｓｉ系
合金の急速溶解を行うに際しては、材料投入口１０か
ら、塊状等の過共晶Ａｌ−Ｓｉ系合金（Ａ）を溶解部２
および予熱部９内に投入して積み重ねた状態とする。Hypereutectic Al-Si having such a structure
When performing rapid melting of a hypereutectic Al—Si alloy using the rapid melting apparatus 1 for a system alloy, the hypereutectic Al—Si alloy (A) in the form of a lump or the like is melted from the material charging port 10. Two
And it puts in the preheating part 9 and it will be in the state piled up.
【００２４】そして、火炎照射軸（Ｄ）が湯溜り部３に
向くよう設定された火炎照射用バーナー７から火炎を照
射させることによって、溶解部２にある過共晶Ａｌ−Ｓ
ｉ系合金（Ａ）を急速加熱して溶解する。Then, the hyper-eutectic Al-S in the melting portion 2 is irradiated by irradiating the flame from the flame irradiating burner 7 in which the flame irradiating axis (D) is set to face the basin 3.
The i-based alloy (A) is rapidly heated and melted.
【００２５】このとき、火炎照射用バーナー７からの排
熱は、予熱部９内にある過共晶Ａｌ−Ｓｉ系合金（Ａ）
を予熱しながら上昇して排熱ダクト１１より排出され
る。At this time, the exhaust heat from the flame irradiation burner 7 is the hypereutectic Al--Si alloy (A) in the preheating section 9.
Is raised while being preheated and is discharged from the exhaust heat duct 11.
【００２６】火炎照射用バーナー７によって急速溶解さ
れた過共晶Ａｌ−Ｓｉ系合金（Ａ）は合金溶湯（Ｃ）と
なって湯溜り部３に流れ落ちる。The hypereutectic Al--Si alloy (A) rapidly melted by the flame irradiating burner 7 becomes molten alloy (C) and flows down into the basin 3.
【００２７】このとき、火炎照射用バーナー７の火炎が
直接当たらず、６００℃程度に加熱された過共晶Ａｌ−
Ｓｉ系合金（Ａ）が生ずる場合には、融点が低い共晶部
分が優先溶解されて湯溜り部３に流れる結果、高融点で
かつ高Ｓｉ含有量の未溶解材（Ｂ）が発生する。At this time, the flame of the burner 7 for flame irradiation does not hit directly, and the hypereutectic Al-- which is heated to about 600 ° C.
When the Si-based alloy (A) is produced, the eutectic portion having a low melting point is preferentially melted and flows into the basin 3, so that the unmelted material (B) having a high melting point and a high Si content is generated.
【００２８】そして、この高融点でかつ高Ｓｉ含有量の
未溶解材（Ｂ）は、過共晶Ａｌ−Ｓｉ系合金（Ａ）の溶
解の進行と共に湯溜り部３に移動し、この湯溜り部３で
は、合金溶湯（Ｃ）と未溶解材（Ｂ）とで固液共存相が
形成され、未溶解材（Ｂ）は合金溶湯（Ｃ）に直接接触
することにより拡散・溶解する。The unmelted material (B) having a high melting point and a high Si content moves to the basin 3 as the hypereutectic Al-Si alloy (A) is melted, and the basin 3 In part 3, a solid-liquid coexisting phase is formed by the molten alloy (C) and the undissolved material (B), and the undissolved material (B) diffuses and dissolves by directly contacting the molten alloy (C).
【００２９】このような火炎照射用バーナー７による過
共晶Ａｌ−Ｓｉ系合金（Ａ）の溶解および高融点でかつ
高Ｓｉ含有量の未溶解材（Ｂ）の合金溶湯（Ｃ）への拡
散・溶解が進むことによって、湯溜り部３の合金溶湯
（Ｃ）が次第に増加することにより隔壁４を越えて溶湯
保持部５に流れ、溶湯温度保持用バーナー８で加熱され
ることによって、所定温度を有しかつ溶解前の過共晶Ａ
ｌ−Ｓｉ系合金と同一Ｓｉ濃度の合金溶湯（Ｃ）を得
る。The hypereutectic Al--Si alloy (A) is melted by the burner 7 for flame irradiation and the unmelted material (B) having a high melting point and a high Si content is diffused into the molten alloy (C). As the melting progresses, the molten alloy (C) in the pool 3 gradually increases and flows over the partition wall 4 into the molten metal holding portion 5 and is heated by the molten metal temperature holding burner 8 to a predetermined temperature. And a hypereutectic A before melting
An alloy melt (C) having the same Si concentration as the 1-Si alloy is obtained.
【００３０】したがって、一時的に高融点でかつ高Ｓｉ
含有量の未溶解材（Ｂ）が生じても、湯溜り部３におい
て合金溶湯（Ｂ）と固液共存相を形成して、未溶解材
（Ｂ）は溶湯部分に拡散・溶解されて合金溶湯（Ｃ）と
なるので、炉床部分に未溶解材（Ｂ）が残存することな
く溶解が進行し、投入材料と同一Ｓｉ含有量の合金溶湯
（Ｃ）が得られることとなる。Therefore, the high melting point and the high Si are temporarily
Even if the content of the undissolved material (B) is generated, a solid-liquid coexisting phase is formed with the molten alloy (B) in the pool 3 and the undissolved material (B) is diffused / dissolved in the molten metal portion to form an alloy. Since it becomes the molten metal (C), the melting proceeds without the unmelted material (B) remaining in the hearth portion, and the alloy molten metal (C) having the same Si content as the input material is obtained.
【００３１】[0031]
【発明の効果】本発明に係わる過共晶Ａｌ−Ｓｉ系合金
の急速溶解方法によれば、上述した構成としたから、過
共晶Ａｌ−Ｓｉ系合金に火炎を照射して急速溶解するに
際し、高融点でかつ高Ｓｉ含有量の未溶解材よりなる溶
け残り部分が発生せず、投入原料の過共晶Ａｌ−Ｓｉ系
合金とＳｉ濃度が同じである合金溶湯を得ることが可能
であるという著しく優れた効果がもたらされ、かつま
た、本発明に係わる過共晶Ａｌ−Ｓｉ系合金の急速溶解
装置によれば、上記した本発明に係わ過共晶Ａｌ−Ｓｉ
系合金の急速溶解方法の実施が容易に可能となって、高
融点でかつ高Ｓｉ含有量の未溶解材よりなる溶け残りを
発生することなく投入原料の過共晶Ａｌ−Ｓｉ系合金と
Ｓｉ濃度が同じである合金溶湯を得ることが可能である
という著しく優れた効果がもたらされる。EFFECTS OF THE INVENTION According to the method for rapidly melting a hypereutectic Al-Si alloy according to the present invention, since it has the above-described structure, when the hypereutectic Al-Si alloy is irradiated with a flame for rapid melting. It is possible to obtain an alloy melt having the same Si concentration as that of the hypereutectic Al-Si alloy used as the starting material, without any unmelted portion consisting of an unmelted material having a high melting point and a high Si content. According to the rapid eutectic apparatus for hypereutectic Al-Si alloys according to the present invention, the hypereutectic Al-Si according to the present invention described above can be obtained.
The rapid melting method of the system-based alloy can be easily performed, and the hypereutectic Al-Si-based alloy and the Si of the input raw materials can be used without forming the unmelted material of the unmelted material having the high melting point and the high Si content. The remarkable advantage is that it is possible to obtain a molten alloy having the same concentration.
【図１】本発明に係わる過共晶Ａｌ−Ｓｉ系合金の急速
溶解方法の実施に使用する過共晶Ａｌ−Ｓｉ系合金の急
速溶解装置の一実施例を示す縦断面説明図である。FIG. 1 is a vertical cross-sectional explanatory view showing an example of a rapid eutectic apparatus for hypereutectic Al—Si alloy used for carrying out a rapid eutectic method for hypereutectic Al—Si alloy according to the present invention.
【図２】従来における金属材料の急速溶解装置の一例を
示す縦断面説明図である。FIG. 2 is a vertical cross-sectional explanatory view showing an example of a conventional rapid melting device for metal materials.
【図３】従来における金属材料の急速溶解装置の他の例
を示す縦断面説明図である。FIG. 3 is a vertical cross-sectional explanatory view showing another example of a conventional rapid melting apparatus for a metal material.
【図４】従来における金属材料の急速溶解装置のさらに
他の例を示す縦断面説明図である。FIG. 4 is a vertical cross-sectional explanatory view showing still another example of a conventional rapid melting device for metal materials.
【図５】Ａｌ−Ｓｉ系合金の状態図である。FIG. 5 is a phase diagram of an Al—Si alloy.
１ 過共晶Ａｌ−Ｓｉ系合金の急速溶解装置 ２ 溶解部 ３ 湯溜り部 ４ 隔壁 ５ 溶湯保持部 ６ 溶湯取出し口 ７ 火炎照射用バーナー ８ 溶湯温度保持用バーナー ９ 予熱部 １０ 材料投入口 １１ 排熱ダクト （Ａ） 過共晶Ａｌ−Ｓｉ系合金 （Ｂ） 高融点でかつ高Ｓｉ含有量の未溶解材 （Ｃ） 過共晶Ａｌ−Ｓｉ系合金溶湯 （Ｄ） 火炎照射用バーナーの火炎照射軸 1 Rapid melting device for hypereutectic Al-Si alloy 2 Melting part 3 Melt pool part 4 Partition wall 5 Molten metal holding part 6 Molten metal outlet 7 Burner for flame irradiation 8 Burner for holding molten metal temperature 9 Preheating part 10 Material input port 11 Discharge Heat duct (A) Hypereutectic Al-Si alloy (B) Unmelted material with high melting point and high Si content (C) Hypereutectic Al-Si alloy melt (D) Flame irradiation of flame irradiation burner axis
Claims (7)
て急速溶解するに際し、優先溶解された共晶部分を含む
合金溶湯と高融点でかつ高Ｓｉ含有量の未溶解材とで固
液共存相を形成させ、前記未溶解材を溶湯部分に拡散・
溶解させて合金溶湯とすることを特徴とする過共晶Ａｌ
−Ｓｉ系合金の急速溶解方法。1. When a hypereutectic Al—Si alloy is rapidly melted by irradiating a flame, the alloy melt containing the preferentially melted eutectic portion and an unmelted material having a high melting point and a high Si content are used. A solid-liquid coexisting phase is formed and the undissolved material diffuses into the molten metal.
Hypereutectic Al characterized by being melted to form an alloy melt
-A rapid melting method for Si-based alloys.
より予熱する請求項１に記載の過共晶Ａｌ−Ｓｉ系合金
の急速溶解方法。2. The method for rapidly melting a hypereutectic Al—Si alloy according to claim 1, wherein the hypereutectic Al—Si alloy is preheated by exhaust heat of a flame.
持部に流して所定温度でかつ溶解前の過共晶Ａｌ−Ｓｉ
系合金と同一Ｓｉ濃度の合金溶湯を得る請求項１または
２に記載の過共晶Ａｌ−Ｓｉ系合金の急速溶解方法。3. A hypereutectic Al—Si alloy at a predetermined temperature and before being melted by flowing an alloy melt obtained by diffusion and melting into a melt holding portion.
The method for rapid melting of a hypereutectic Al-Si alloy according to claim 1 or 2, wherein an alloy melt having the same Si concentration as that of the Al-based alloy is obtained.
バーナーからの火炎により過共晶Ａｌ−Ｓｉ系合金が急
速溶解される溶解部と、優先溶解された共晶部分を含む
合金溶湯と高融点でかつ高Ｓｉ含有量の未溶解材とで固
液共存相を形成させて未溶解材を溶湯部分に拡散・溶解
させて合金溶湯とする湯溜り部と、湯溜り部から流れた
合金溶湯を保持する溶湯保持部をそなえたことを特徴と
する過共晶Ａｌ−Ｓｉ系合金の急速溶解装置。4. A burner for flame irradiation, a melted portion in which a hypereutectic Al—Si alloy is rapidly melted by a flame from the burner for flame irradiation, a molten alloy containing a preferentially melted eutectic portion, and a high melt. A melt pool that forms a solid-liquid coexisting phase with an undissolved material having a high melting point and a high Si content to diffuse and dissolve the undissolved material into an alloy melt, and an alloy melt that flows from the melt pool A rapid-melting device for hypereutectic Al-Si alloy, comprising a molten metal holding portion for holding.
ーナーの排熱により予熱する予熱部をそなえた請求項４
に記載の過共晶Ａｌ−Ｓｉ系合金の急速溶解装置。5. A preheating portion for preheating the hypereutectic Al—Si alloy by exhaust heat of a flame irradiation burner.
The rapid eutectic apparatus for hypereutectic Al-Si alloy according to 1.
り部に向けて設定した請求項４または５に記載の過共晶
Ａｌ−Ｓｉ系合金の急速溶解装置。6. The rapid eutectic apparatus for hypereutectic Al—Si alloy according to claim 4, wherein the flame irradiation axis of the flame irradiation burner is set to face the basin.
設けた請求項４ないし６のいずれかに記載の過共晶Ａｌ
−Ｓｉ系合金の急速溶解装置。7. The hypereutectic Al according to claim 4, wherein the melt holding portion is provided with a burner for holding the melt temperature.
-A rapid melting device for Si-based alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03997194A JP3568129B2 (en) | 1994-03-10 | 1994-03-10 | Rapid melting method and rapid melting apparatus for hypereutectic Al-Si alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03997194A JP3568129B2 (en) | 1994-03-10 | 1994-03-10 | Rapid melting method and rapid melting apparatus for hypereutectic Al-Si alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07252544A true JPH07252544A (en) | 1995-10-03 |
| JP3568129B2 JP3568129B2 (en) | 2004-09-22 |
Family
ID=12567847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03997194A Expired - Fee Related JP3568129B2 (en) | 1994-03-10 | 1994-03-10 | Rapid melting method and rapid melting apparatus for hypereutectic Al-Si alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3568129B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310571A (en) * | 2001-04-16 | 2002-10-23 | Nippon Crucible Co Ltd | Tower type aluminum melting furnace |
| JP2003508636A (en) * | 1999-09-03 | 2003-03-04 | エイティーアイ・プロパティーズ・インコーポレーテッド | Furnace hearth |
| JP2007285679A (en) * | 2006-04-20 | 2007-11-01 | The Tokai:Kk | Melting device and melting method |
| US9050650B2 (en) | 2013-02-05 | 2015-06-09 | Ati Properties, Inc. | Tapered hearth |
| JP2016161139A (en) * | 2015-02-26 | 2016-09-05 | アルカエンジニアリング株式会社 | Nonferrous metal melting furnace |
| US11150021B2 (en) | 2011-04-07 | 2021-10-19 | Ati Properties Llc | Systems and methods for casting metallic materials |
-
1994
- 1994-03-10 JP JP03997194A patent/JP3568129B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003508636A (en) * | 1999-09-03 | 2003-03-04 | エイティーアイ・プロパティーズ・インコーポレーテッド | Furnace hearth |
| JP4906209B2 (en) * | 1999-09-03 | 2012-03-28 | エイティーアイ・プロパティーズ・インコーポレーテッド | Purification hearth |
| JP2002310571A (en) * | 2001-04-16 | 2002-10-23 | Nippon Crucible Co Ltd | Tower type aluminum melting furnace |
| JP2007285679A (en) * | 2006-04-20 | 2007-11-01 | The Tokai:Kk | Melting device and melting method |
| US11150021B2 (en) | 2011-04-07 | 2021-10-19 | Ati Properties Llc | Systems and methods for casting metallic materials |
| US9050650B2 (en) | 2013-02-05 | 2015-06-09 | Ati Properties, Inc. | Tapered hearth |
| US9205489B2 (en) | 2013-02-05 | 2015-12-08 | Ati Properties, Inc. | Hearth and casting system |
| US9221097B2 (en) | 2013-02-05 | 2015-12-29 | Ati Properties, Inc. | Method for casting material |
| US9381571B2 (en) * | 2013-02-05 | 2016-07-05 | Ati Properties, Inc. | Hearth |
| US9539640B2 (en) | 2013-02-05 | 2017-01-10 | Ati Properties Llc | Hearth and casting system |
| JP2016161139A (en) * | 2015-02-26 | 2016-09-05 | アルカエンジニアリング株式会社 | Nonferrous metal melting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3568129B2 (en) | 2004-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH07252544A (en) | Method for rapidly melting hyper-eutectic al-si base alloy and apparatus therefor | |
| JPH01132724A (en) | Apparatus for melting chip of non-ferrous metal | |
| EP1091011A3 (en) | Hot dipping apparatus | |
| FR2591135A1 (en) | IMPROVED METHOD OF ADJUSTING CONTINUOUS CASTING CONDITIONS. | |
| JP4511829B2 (en) | Recycling method for scrap metal scrap | |
| JPH10204553A (en) | Method and device for dissolving and separating aluminum from raw material containing aluminum and metals with higher melting point than aluminum | |
| JPS6280487A (en) | Method and device for dissolving nonferrous metal | |
| SU399540A1 (en) | VPTBFOND ENOOERT | |
| JPH0791844A (en) | Metal melting method and melting furnace | |
| JP4243711B2 (en) | Crucible furnace | |
| JP3473214B2 (en) | Forming method of semi-molten metal | |
| JPS5956077A (en) | Aluminum rapid smelter with smelting facility for aluminum scrap material | |
| RU2098492C1 (en) | Exothermic mixture for alloying iron-carbon alloys with chromium in dipper | |
| JPH08218131A (en) | Method and device for adding additive into molten metal | |
| CA2268862C (en) | Melting apparatus and method for melting metal | |
| JPS595486Y2 (en) | holding furnace | |
| UA76896C2 (en) | Method of obtaining the steel ingot | |
| JP2005313225A (en) | Homogenizing treatment method for aluminum die cast alloy product | |
| SU704992A1 (en) | Method of cast iron desulfurizing in casting furnaces | |
| RU2048536C1 (en) | Steel in ladle alloying method | |
| Baum | Resource saving and improvement of service characteristics of nickel superalloy castings by high-temperature treatment of the melt | |
| RU2324753C2 (en) | Doping technique of chrominum with aluminium | |
| SU724577A2 (en) | Liquid cast iron processing device | |
| SU1079681A1 (en) | Method for prducing master alloy | |
| SU1407982A1 (en) | Method of producing linotype alloy for printing arts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040512 |
|
| A61 | First payment of annual fees (during grant procedure) |
Effective date: 20040611 Free format text: JAPANESE INTERMEDIATE CODE: A61 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 4 Free format text: PAYMENT UNTIL: 20080625 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090625 Year of fee payment: 5 |
|
| LAPS | Cancellation because of no payment of annual fees |