JPS5810957Y2 - graphite crucible furnace - Google Patents
graphite crucible furnaceInfo
- Publication number
- JPS5810957Y2 JPS5810957Y2 JP1979161756U JP16175679U JPS5810957Y2 JP S5810957 Y2 JPS5810957 Y2 JP S5810957Y2 JP 1979161756 U JP1979161756 U JP 1979161756U JP 16175679 U JP16175679 U JP 16175679U JP S5810957 Y2 JPS5810957 Y2 JP S5810957Y2
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- furnace chamber
- lid
- furnace
- support member
- 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
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【考案の詳細な説明】
本考案は、Ａｌ溶解用黒鉛るつぼ炉に関するものである
。[Detailed Description of the Invention] The present invention relates to a graphite crucible furnace for melting Al.
従来Ａｌ溶解用黒鉛るつぼ炉は、レンガ材等の耐火材よ
りなる炉体の炉室内に、黒鉛るつぼを収容し、その炉室
の開放上面を鉄板製の蓋体により被覆し、そのるつぼを
炉室内の空間部に設けたヒータにより加熱するようにし
たものが知られているが、かかる従来のるつぼ炉では、
るつぼと蓋体との間に多少の間隙を形成して、るつぼの
熱により膨縮、変形、あるいはるつぼ自体の寸法上の誤
差を許容できるように構成されている。Conventional graphite crucible furnaces for melting Al house a graphite crucible in the furnace chamber of a furnace body made of a refractory material such as brick, and cover the open upper surface of the furnace chamber with a lid made of iron plate. It is known that heating is performed using a heater installed in the indoor space, but in such conventional crucible furnaces,
A slight gap is formed between the crucible and the lid to allow for expansion, contraction, deformation, or dimensional errors of the crucible itself due to the heat of the crucible.
しかしながらこのようにすると、炉室内の雰囲気熱が、
前記間隙を通って炉室外に逃げるため、るつぼの上部分
と下部分では温度差が生じていた。However, if you do this, the atmospheric heat inside the furnace chamber will
Because it escaped to the outside of the furnace chamber through the gap, a temperature difference was created between the upper and lower parts of the crucible.
ところで黒鉛るつぼはＣ，ＳｉＣがそれぞれ約４０％ず
つ、その他の成分が約２０％で構成されており、このよ
うな成分のるつぼは、その雰囲気温度が６５０〜７００
℃の範囲で酸化現象が最大となり、その温度範囲から上
、下に離れる程酸化現象が鈍くなることが知られており
、またＡＩの溶湯温度は約７５０℃であり、その溶湯に
浸されている、るつぼの下部分はその温度に保持される
が、反面溶湯の浸されていない、るつぼの上部分はそれ
よりも約４０〜５０℃低い温度となっている。By the way, a graphite crucible is composed of about 40% each of C and SiC, and about 20% of other components, and a crucible with such components has an ambient temperature of 650 to 700.
It is known that the oxidation phenomenon is at its maximum in the ℃ range, and the further above and below that temperature range, the slower the oxidation phenomenon becomes.Also, the temperature of the molten metal of AI is about 750℃, and the temperature of the molten metal is approximately 750℃, The lower part of the crucible, which is in the melt, is maintained at that temperature, while the upper part of the crucible, which is not immersed in molten metal, is at a lower temperature of about 40-50°C.
そのためるつぼの前記上部分は酸化の最もはげしい温度
範囲内に入り、その酸化をはやめてるつぼの耐久性を減
する不具合があった。As a result, the upper portion of the crucible falls within the temperature range where oxidation is most severe, and the oxidation is inhibited thereby reducing the durability of the crucible.
そこで本考案は、炉室とるつぼ内とを気密に遮断すると
ともにその炉室の上部に連通ずる副炉室を形成すること
により、るつぼの温度をその全域にわたって略溶湯温度
に保つようにしてるつぼの酸化を鈍くシ、その耐久性を
高めるようにした、構造簡単なるつぼ炉を提供すること
を目的とするものである。Therefore, the present invention airtightly isolates the furnace chamber and the inside of the crucible, and forms an auxiliary furnace chamber that communicates with the upper part of the furnace chamber, thereby maintaining the temperature of the crucible at approximately the molten metal temperature throughout the entire area. The purpose of the present invention is to provide a crucible furnace with a simple structure, which slows down the oxidation of the metal and increases its durability.
以下、図面により本考案の一実施例について説明すると
、レンガ材等の耐火材よりなる炉体１内には、上面開放
の炉室２が形成され、この炉室２内中央部には、上面を
開放した黒鉛るつぼ３が設置される。Hereinafter, one embodiment of the present invention will be described with reference to the drawings. A furnace chamber 2 with an open top is formed in a furnace body 1 made of a refractory material such as brick, and a top-open furnace chamber 2 is formed in the center of the furnace chamber 2. A graphite crucible 3 with an open graphite crucible is installed.
前記炉体１の上端面には環状をなす蓋体支持部材５が設
けられ、この蓋体支持部材５上に鉄板製蓋体６を設置す
ることにより、前記炉室２の開放上面が被覆される。An annular lid support member 5 is provided on the upper end surface of the furnace body 1, and by installing an iron plate lid 6 on the lid support member 5, the open upper surface of the furnace chamber 2 is covered. Ru.
蓋体６は上、下面を開口した中空円筒部７と、中空円筒
部７の上部開口縁より外向きに折曲げ形成された上部フ
ランジ８′と、中空円筒部７の外周面下部に上部フラン
ジ８′との間に所定の間隔を存して突設された下部フラ
ンジ８とより構成される。The lid body 6 includes a hollow cylindrical part 7 with open upper and lower surfaces, an upper flange 8' bent outward from the upper opening edge of the hollow cylindrical part 7, and an upper flange at the lower part of the outer peripheral surface of the hollow cylindrical part 7. 8' and a lower flange 8 projecting from the lower flange 8 with a predetermined distance therebetween.
蓋体６の中空円筒部７は蓋体支持部材５内に遊挿され、
これにより上部フランジ８′は蓋体支持部材５の上端面
に係止され、また下部フランジ８はるつぼ３の上端縁に
間隙を存して対向する。The hollow cylindrical portion 7 of the lid 6 is loosely inserted into the lid support member 5,
As a result, the upper flange 8' is locked to the upper end surface of the lid support member 5, and the lower flange 8 faces the upper end edge of the crucible 3 with a gap therebetween.
そして間隙に耐熱、弾性パツキン材９を介装することに
より蓋体６、蓋体支持部材５、耐熱、弾性パツキン材９
により炉室２に連通する副炉室２′が形成される。Then, by interposing a heat-resistant, elastic packing material 9 in the gap, the lid body 6, the lid body support member 5, and the heat-resistant, elastic packing material 9 are interposed.
Thus, an auxiliary furnace chamber 2' communicating with the furnace chamber 2 is formed.
いま、るつぼ３内にＡ１等の溶解材料を投入後、ヒータ
４を作動すれば、前記材料は溶解される。Now, after putting a melting material such as A1 into the crucible 3, if the heater 4 is activated, the material will be melted.
この場合炉室２は蓋体６、蓋体支持部材５およびパツキ
ン材９により密閉され、しかもるつぼ３の上端縁の上方
は副炉室２に形成されているので、炉室２および副炉室
２′とるつぼ３内との間に空気の流通がなく、るつぼ３
は溶湯の浸っている下部分１０が溶湯温度、即ち約７５
０℃と同温度に加熱されるとともに溶湯の浸っていない
上部分１１も前記下部分１０と略同温度に加熱すること
ができ、るつぼ３の上部分１１の酸化が特に烈しくなる
こともない。In this case, the furnace chamber 2 is sealed by the lid 6, the lid support member 5, and the packing material 9, and since the upper edge of the crucible 3 is formed as the auxiliary furnace chamber 2, the furnace chamber 2 and the auxiliary furnace chamber There is no air circulation between 2' and the inside of crucible 3.
The lower part 10 where the molten metal is immersed is at the molten metal temperature, that is, about 75
In addition to being heated to the same temperature as 0° C., the upper portion 11 not immersed in molten metal can also be heated to approximately the same temperature as the lower portion 10, and the oxidation of the upper portion 11 of the crucible 3 does not become particularly severe.
そして実験の結果、従来のものでは約１２００〜１３０
０時間の使用でるつぼ上部の酸化が認められたのに対し
、本考案では３６００〜３９００時間の使用で酸化が認
められ、その耐久性が著しく向上することが判明した。And as a result of the experiment, the conventional one has about 1200 to 130
While oxidation of the upper part of the crucible was observed after 0 hours of use, oxidation was observed in the present invention after 3600 to 3900 hours of use, indicating that its durability was significantly improved.
以上のように本考案によれば、るつぼ３の上端縁と蓋体
６との間に耐熱、弾性パツキン材９を介装し、また蓋体
６と、蓋体支持部材５と、耐熱、弾性パツキン材９との
協働により炉室２の上部に連通ずる副炉室２′を形成し
たので、耐熱、弾性パツキン材９により炉室２内を密閉
するとともに該室２内をるつぼ３内に対して気密に遮断
することができ、その上副炉室２′の加熱作用でるつぼ
３の上部分を積極的に加熱してるつぼ３全体を溶湯温度
と略同温度にすることができ、したがってるつぼ３の酸
化程度をその全域に亙って鈍くして、その耐久性を高め
ることができる。As described above, according to the present invention, the heat-resistant, elastic packing material 9 is interposed between the upper edge of the crucible 3 and the lid 6, and the lid 6 and the lid support member 5 are made of heat-resistant, elastic Since the auxiliary furnace chamber 2' communicating with the upper part of the furnace chamber 2 is formed in cooperation with the packing material 9, the inside of the furnace chamber 2 is sealed by the heat-resistant and elastic packing material 9, and the inside of the chamber 2 is inserted into the crucible 3. Furthermore, the upper part of the crucible 3 can be actively heated by the heating action of the auxiliary furnace chamber 2' to bring the entire crucible 3 to approximately the same temperature as the molten metal. It is possible to reduce the degree of oxidation of the crucible 3 over its entire region, thereby increasing its durability.
またるつば３内の溶湯が炉室２内にこぼれることもない
ので、ヒータ４の断線事故を生起することもない。Moreover, since the molten metal in the crucible 3 does not spill into the furnace chamber 2, there is no possibility of the heater 4 breaking.
図面は本考案るつぼ炉の縦断側面図である。
１・・・・・・炉体、２・・・・・・炉室、２′・・・
・・・副炉室、３・・・・・・るつぼ、６・・・・・・
蓋体、７・・・・・・中空円筒部、８′、８・・・・・
・上、下部フランジ、９・・・・・・耐熱、弾性パツキ
ン材。The drawing is a longitudinal sectional side view of the crucible furnace of the present invention. 1...Furnace body, 2...Furnace chamber, 2'...
...Sub-furnace chamber, 3... Crucible, 6...
Lid body, 7...Hollow cylindrical part, 8', 8...
- Upper and lower flanges, 9...Heat-resistant, elastic packing material.
Claims (1)
容されるるつぼ３と、前記炉室２の開放上面を被覆する
蓋体６とを備えた、るつぼ炉において、前記蓋体６を中
空円筒部７と、該中空円筒部７の上部開口縁より外向き
に折曲げ形成された上部フランジ８′と、該中空円筒部
７の外周面下部に前記上部フランジ８′との間に所定の
間隔を存して突設された下部フランジ８とより構威し、
前記炉体１の上端面に環状をなす蓋体支持部材５を載置
し、前記蓋体６の中空円筒部７を前記蓋体支持部材５内
に遊挿して前記上部フランジ８′を該蓋体支持部材５の
上端面に係止させるとともに前記下部フランジ８を前記
るつぼ３の上端縁に間隙を存して対向させ、該間隙に耐
熱、弾性パツキン材９を介装することにより前記蓋体６
、蓋体支持部材５、耐熱、弾性パツキン材９により前記
炉室２に連通する副炉室２′を形成してなる、黒鉛るつ
ぼ炉。A crucible furnace comprising a furnace body 1 having a furnace chamber 2 with an open top surface, a crucible 3 housed in the furnace chamber 2, and a lid body 6 covering the open top surface of the furnace chamber 2. The body 6 has a hollow cylindrical part 7, an upper flange 8' bent outward from the upper opening edge of the hollow cylindrical part 7, and the upper flange 8' at the lower part of the outer peripheral surface of the hollow cylindrical part 7. a lower flange 8 protruding with a predetermined interval therebetween;
A ring-shaped lid support member 5 is placed on the upper end surface of the furnace body 1, and the hollow cylindrical portion 7 of the lid 6 is loosely inserted into the lid support member 5, and the upper flange 8' is attached to the lid. The lid body is fixed to the upper end surface of the crucible support member 5, and the lower flange 8 is opposed to the upper edge of the crucible 3 with a gap therebetween, and a heat-resistant, elastic packing material 9 is interposed in the gap. 6
, a graphite crucible furnace comprising a lid support member 5 and a heat-resistant, elastic packing material 9 to form an auxiliary furnace chamber 2' communicating with the furnace chamber 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979161756U JPS5810957Y2 (en) | 1979-11-20 | 1979-11-20 | graphite crucible furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979161756U JPS5810957Y2 (en) | 1979-11-20 | 1979-11-20 | graphite crucible furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5676998U JPS5676998U (en) | 1981-06-23 |
| JPS5810957Y2 true JPS5810957Y2 (en) | 1983-02-28 |
Family
ID=29672823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979161756U Expired JPS5810957Y2 (en) | 1979-11-20 | 1979-11-20 | graphite crucible furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5810957Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117640A (en) * | 2009-12-01 | 2011-06-16 | Fine Forming:Kk | Metal melting furnace and method for generating molten metal in the metal melting furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5018970U (en) * | 1973-06-15 | 1975-03-03 |
-
1979
- 1979-11-20 JP JP1979161756U patent/JPS5810957Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5018970U (en) * | 1973-06-15 | 1975-03-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5676998U (en) | 1981-06-23 |
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