JPS6016292A - Heat-insulating furnace - Google Patents

Heat-insulating furnace

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Publication number
JPS6016292A
JPS6016292A JP12396983A JP12396983A JPS6016292A JP S6016292 A JPS6016292 A JP S6016292A JP 12396983 A JP12396983 A JP 12396983A JP 12396983 A JP12396983 A JP 12396983A JP S6016292 A JPS6016292 A JP S6016292A
Authority
JP
Japan
Prior art keywords
molten metal
heater
immersion
heating chamber
immersion heater
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
Application number
JP12396983A
Other languages
Japanese (ja)
Inventor
博 吉村
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP12396983A priority Critical patent/JPS6016292A/en
Publication of JPS6016292A publication Critical patent/JPS6016292A/en
Pending legal-status Critical Current

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  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Details (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明は、アルミニウムなどの金属の溶解状態を保持
する保温炉に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat retention furnace for maintaining a molten state of metal such as aluminum.

この種の保温炉において、従来溶湯加熱室は電気、ガス
、重油などを用い外から加熱されていたが、最近加熱効
率を増すために、浸漬ヒータにより溶湯を直接加熱ηる
加熱炉が用いられるようになっている。ところが溶湯に
常時浸漬されでいるヒータには、溶滓のイlvに起因り
る侵食や溶湯の流れによる物理的屈曲ににり局部的な破
損が生じるという問題がある。
In this type of heat retention furnace, the molten metal heating chamber was conventionally heated from the outside using electricity, gas, heavy oil, etc., but recently, in order to increase heating efficiency, heating furnaces that directly heat the molten metal with an immersion heater have been used. It looks like this. However, heaters that are constantly immersed in molten metal have the problem of localized damage due to erosion caused by molten slag and physical bending caused by the flow of molten metal.

この発明の目的は、上記の問題を解決した保温炉を提供
づ−ることにある。
An object of the present invention is to provide a heat-retaining furnace that solves the above-mentioned problems.

この発明による保温炉は、上記の目的を達成するために
、浸漬ヒータと、ヒータ保護筒どが加熱室の蓋に垂下状
に設けられており、ヒータ保護筒の下端が溶湯汲出しに
よる揚面ト降限より下方に位置するようになされており
、かつ浸漬ヒータの外周面とヒータ保護筒の内周面間に
間隔が設けられている。
In order to achieve the above object, the heat retention furnace according to the present invention has an immersion heater and a heater protection tube provided in a hanging manner on the lid of the heating chamber. The immersion heater is positioned below the lower limit, and a space is provided between the outer circumferential surface of the immersion heater and the inner circumferential surface of the heater protection cylinder.

一保温炉の加熱室内の溶湯は、その汲出しにより湯面が
降下し、溶湯中へ取鍋を沈めたり、溶湯を補充したりす
るさいに湯面が上背する6湯流れの速度は、1.1=が
って湯面の上昇限と下降限の間における湯面部分で速い
し、また溶滓は湯面イ]近に主として存在する。
1) The molten metal level in the heating chamber of a heat retention furnace drops as it is pumped out, and when the ladle is submerged into the molten metal or the molten metal is replenished, the molten metal level rises. 6. The speed of the molten metal flow is: 1.1 = Therefore, it is faster in the hot water surface area between the rising and falling limits of the hot water level, and the slag mainly exists near the hot water surface.

この発明による保温炉は、浸漬ヒータと、ヒータ保護筒
とが加熱室の蓋に垂下状に設けられてd5す、ヒータ保
護間の下端が溶湯汲出しによる湯面下降限より下方に位
置J゛るようになされているので、浸漬ヒータに溶滓の
付着するのが阻止Uられるし、溶湯の速い流れの影響も
受けない。したがって、浸漬ヒータの耐久力が従来のも
のに比べて大幅に向上丈る。また浸漬ヒータの外周面と
ヒータ保護筒の内周面には、間隔が設(プられでいるの
で、この間にも溶湯が存在することになり、ヒータ保護
間の存在のために浸漬ヒータの機能を阻古づることもな
い。
In the heat retention furnace according to the present invention, an immersion heater and a heater protection cylinder are provided in a hanging manner on the lid of the heating chamber, and the lower end between the heater protections is located below the lower limit of the melt level by pumping out the molten metal. This prevents molten slag from adhering to the immersion heater, and it is not affected by the fast flow of molten metal. Therefore, the durability of the immersion heater is significantly improved compared to conventional ones. In addition, since there is a gap between the outer circumferential surface of the immersion heater and the inner circumferential surface of the heater protection tube, molten metal will also exist in between. It never gets old.

こ♀発明の実施例を、以下図面を参照して説明する。な
お、この明細書において、前とtJ第1図の下側を、後
とは同上側をいうものとする。
Embodiments of this invention will be described below with reference to the drawings. In this specification, "front" refers to the lower side of tJ in FIG. 1, and "rear" refers to the upper side of the same.

また図示の保温炉はアルミニウム溶湯用のものである。The illustrated heat retention furnace is for molten aluminum.

保温炉には、・溶湯供給室(1)と−溶湯汲出し室(2
)とが第1隔壁(3)を介して前後に配置せられている
と午もに、両室(1> (2>の一側方にこれらの全長
にわたる加熱室(4)が第2隔壁(5)を介して配置け
られ(いる。第2隔壁(5)の下部には、溶湯供給室(
1)と溶湯加熱室(4)とを通じる第1通路(6〉およ
び溶湯加熱室(4)と溶湯汲出し室(2)とを通じる第
2通路(7)とがそれぞれ設りられ、第1隔壁(3)の
下部には、溶湯供給室(1)と溶湯汲出し室(2)とを
通じる付加通路(8)が設けられている。
The heat-retaining furnace has a molten metal supply chamber (1) and a molten metal pumping chamber (2).
) are placed in front and behind each other with the first partition (3) in between. (5). At the bottom of the second partition wall (5), there is a molten metal supply chamber (
1) and the molten metal heating chamber (4), and a second passage (7) that communicates with the molten metal heating chamber (4) and the molten metal pumping chamber (2). An additional passage (8) communicating with the molten metal supply chamber (1) and the molten metal pumping chamber (2) is provided at the lower part of the first partition wall (3).

加熱室(4)の蕃(9)には、複数の浸漬ヒ〜り(10
)と、ヒータ保護筒(11)とが垂下状に設けられてお
り、ヒータ保護筒(11)の下端が溶湯汲出しによる湯
面下降限(B)より下方に位置J−るようになされでお
り、がっ浸漬ヒータ(10)の外周面とヒータ保護間(
11)の内周面間に間隔が設けられている。
A plurality of immersion heaters (10
) and a heater protection tube (11) are provided in a hanging shape, and the lower end of the heater protection tube (11) is positioned below the lower limit (B) of the melt level due to pumping out the molten metal. Between the outer peripheral surface of the immersion heater (10) and the heater protection (
A space is provided between the inner circumferential surfaces of 11).

溶湯供給室(1)にも蓋が施されるが図示は略されてい
る。通路(6)〜(8)は、保温炉の底に達しており、
かつ第1通路(6)は第2通シ゛δ(7)に比べて小さ
く形成1られている。
The molten metal supply chamber (1) is also covered with a lid, but the illustration is omitted. The passages (6) to (8) reach the bottom of the heat retention furnace,
In addition, the first passage (6) is formed smaller than the second passage δ (7).

それは、溶湯供給室(1)には、溶湯供給時酸化物が発
生するので、これが溶湯加熱室(4)に流入Jるのを阻
止するためと、溶湯加熱室(4)内における溶湯の流速
をなるべく小さくするためである。またイ1加通路(8
)も本来潟を流通するためのものではないから、第1通
路(6)と同様に小さく形成けられている。浸漬ヒータ
(10)はいわゆるセラミックじ一タJ二りなり、棒状
の発熱体(12)が−り端に鍔(13)を右ジる有底の
絶縁ぜ(14)に収められ、絶縁TA(14)の開口部
が鍔イ1ぎ環状栓(15)で塞がれ、発熱体(12)の
上端部がこれより上方に突出しているものである。蓋(
9)は断熱耐火(Δ(Hi)の上面に鉄板(17)が貼
られたものであり、浸漬ヒータ(10)はこれを貫通し
て1一方にのび、その絶縁管(14)の上端部(13)
が鉄板(11)の上面に固着せられている。ヒータ保護
間(11)の上端には、鍔(18)が設けられてJ3つ
、これが蓋(9)の断熱耐火月(16)中に埋入されが
つ鉄板(17)下面に設けられた垂直断面り形の鉄製掛
止め部材(19)の水平部(19a 、)に引掛【ノら
れ、これによりヒータ保護筒(11)は蓋(9)に固定
せられている。絶縁管(14)およびヒータ保護筒(1
1)には、アルミニウムやその溶滓に侵食されずしかも
熱伝導率が高く耐熱性を有する材料が用いられており、
具体的にはSiCまたはS!:3Nz、などが適してい
る。
This is to prevent oxides from flowing into the molten metal heating chamber (4) since oxides are generated in the molten metal supply chamber (1) when the molten metal is supplied, and to prevent the flow rate of the molten metal in the molten metal heating chamber (4). This is to make it as small as possible. Also, I1 addition path (8
) is not originally intended for flowing through the lagoon, so it is formed small like the first passage (6). The immersion heater (10) is a so-called ceramic diode J2, in which a rod-shaped heating element (12) is housed in a bottomed insulating chamber (14) with a flange (13) at the right end, and an insulating TA. The opening of (14) is closed with a collar-shaped annular stopper (15), and the upper end of the heating element (12) projects upward from this. lid(
9) is a heat insulating fireproof (Δ(Hi)) with a steel plate (17) affixed to the top surface, and the immersion heater (10) passes through this and extends to one side, and the upper end of its insulating tube (14) (13)
is fixed to the upper surface of the iron plate (11). A collar (18) is provided at the upper end of the heater protection space (11), and this is embedded in the heat-insulating fireproof cover (16) of the lid (9), and is provided on the lower surface of the iron plate (17). The heater protection cylinder (11) is fixed to the lid (9) by being hooked onto the horizontal portion (19a) of the iron hooking member (19) having a vertical cross section. Insulation tube (14) and heater protection tube (1
1) uses a material that is not corroded by aluminum or its slag and has high thermal conductivity and heat resistance.
Specifically, SiC or S! :3Nz, etc. are suitable.

なお、・第4図において、(A>は湯面上昇限、(20
)は湯面付近の溶滓を示す。
In addition, in Figure 4, (A> is the limit of rise in the hot water level, (20
) indicates slag near the hot water surface.

上記保温炉において、溶湯汲出室(2)の溶湯内に、溶
湯汲出しのために取鍋を沈めると、その分だけ溶湯の容
積が増えるので、第2通路(7)にり溶湯汲出室(2)
と連通している溶湯加熱室(4)の湯面はいったん上野
するが、溶湯を汲出すと逆に場面は降下する。また溶湯
を溶湯供給蜜(1)へ供給すると、これと第2通路(6
)と連通している溶湯加熱室(4)の場面が上野する。
In the above-mentioned heat retention furnace, when the ladle is sunk into the molten metal in the molten metal pumping chamber (2) for pumping out the molten metal, the volume of the molten metal increases by that amount. 2)
The level of the molten metal in the molten metal heating chamber (4), which is in communication with the molten metal, rises once, but once the molten metal is pumped out, the level of the molten metal decreases. Also, when the molten metal is supplied to the molten metal supplying hole (1), this and the second passage (6
) The scene of the molten metal heating chamber (4), which is in communication with the molten metal heating chamber (4), is shown in Ueno.

付加通路(8)は溶湯加熱室(4)に出入りする溶湯の
流速を低減けしめるが、ヒータ保護筒(11)は溶湯加
熱室(4)に出入りする溶湯の流れの影響が浸漬ヒータ
(10)に及ぶのを阻止する。さらにヒータ保Kit+
1(11)は、浸漬ヒータ(10)に湯面の溶滓が1号
着づるのを防ぐ。
The additional passageway (8) reduces the flow rate of the molten metal flowing in and out of the molten metal heating chamber (4), but the heater protection tube (11) reduces the influence of the flow of molten metal in and out of the molten metal heating chamber (4). ). In addition, heater protection kit +
1 (11) prevents molten slag on the surface of the hot water from adhering to the immersion heater (10).

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

図面はこの発明の実施例を示づもので、第1図は溶湯供
給室の藍を除去しかつ溶湯加熱室の蓋を切欠いた保温炉
全採の平面図、第2図は第1図のII −、I線にそう
断面図、第3図番よ第1図の■−■線にそう断面図、第
4図は第3図にa3ける浸漬ヒータおよびヒータ保温管
部分の拡大断面図である。 (4)・・・加熱至、(9)・・・蓋、(1o)・・・
浸漬ヒータ、(11)・・・ヒータ保護管、(B)・・
・湯面下降限。 以 上 特許出願人 吉 村 博 且り 第2ド1 第4図 手続補正書 昭和58年8月26日 1、事件の表小 昭和58年特r1願第123969号
2、発明の名称 保温炉 3、補正をする者 !I!1’トとの関係 特y「出願人 4、代 理 人 5 補正命令の日付 昭和 年 月 口6、補正により
増加する究明の数 7、補正の対象 明細書全文 8、補j1.の内容 明 m 書(補正) 1、発明の名称 保温炉 2、特許請求の範囲 浸漬ヒータ(10)と、ヒータ保温筒(11)とが加熱
室(4)の燕(9)に垂ト状に設りられており、ヒータ
保護間(11)の下端が溶湯汲出しによる湯面下降限(
B)より下方に位i?X ”lるようになされており、
かつ浸漬ヒータ(01)の外周面とヒータ保饅筒(11
)の内周面間に間隔がF;! tプられている保温炉。 3、発明の詳細な説明 。 この発明は、アルミニウムなどの金属の溶解状態を保持
する保温炉に関づるもの(・ある。 この種の保温炉において、従来溶湯加熱室は電気、ガス
、重油などを用い外から加熱されでいたが、最近加熱効
率を増すために、浸漬ヒータにより溶湯を直接加熱りる
加熱炉が用いられるようになっている。ところが溶湯に
常時浸漬されているヒータには、つぎのような現象によ
り折損が生じるという問題がある。すなわち:、一般に
場面に酸化皮膜が生じるが、溶湯がアルミニウムの揚台
は、場面に酸化アルミニウム膜が生じる。湯面が静市し
ているさい、この酸化アルミニウム膜はそれ以上のアル
ミニウムの酸化を防ぐ役目をする酸化防止膜となる。し
かしながら、注湯および汲湯時には、湯面の胃降ととも
に波が発生し、その結果、前記酸化防止膜が破れ、その
破れ目から露出したアルミニウム溶湯の金属面が新たに
酸化μ゛られるとともに、汲湯時に破壊せられた酸化ア
ルミニウム膜の一部がいったん溶湯の底に巻込まれた後
ある時間を経て浮上するので、次第に溶滓が増加し、こ
れが湯面部分に相当する浸漬ヒータの外周に13M状と
なって41着づ−る。そのために浸漬ヒータのこの部分
に偏った局部加熱が年中し、強度劣化が生じる。上述の
ように、注湯おJ:び汲湯11,1に波が発生するが、
とくに汲湯時は注湯時に比べて波が大ぎいばかりか、i
ll [1正しい汲湯リイクルにより波動が増幅され、
これがうねりとなっで浸漬ヒータに衝撃をうえる。波の
ニLネルギーは浸漬ヒータに当たってその一部が吸収せ
られるが、反面浸漬ヒータが上記劣化部からJli i
l’i tlるという問題があるのである。 この発明の目的は、−り記の問題をYR決した17温炉
を提供することにある。 この発明による保温炉は、上記の目的を達成するために
、浸漬ヒータと、ヒータ保護筒とが加熱室の蓋に垂下状
に設けられており、ヒータ保護筒の下端が′7B渇汲出
しによる場面下降限より下方に位置するようになされて
おり、かつ浸漬ヒータの外周面とヒータ保護筒の内周面
間に間隔が設けられている。 この発明による保温炉は、浸漬ヒータと、ヒータ保護筒
とが加熱室の蓋に垂下状に設(〕られており、ヒータ保
調1fS1の下端が溶湯汲出しによる湯面下降限より下
方に位置するようになされているので、浸漬ヒータに溶
滓のGl 54するのが阻止ぜられるし、ヒータ保護筒
が防波堤の役目をするので上記溶湯の波の影響も受けな
い。したがって、浸漬ヒータの耐久ツノが従来のものに
比べて大幅に向上ゴる。ま1c浸漬ヒータの外周面とヒ
ータ保護筒の内周面には、間隔が設けられているので、
この間にも溶湯が存在することになり、ヒータ保護筒の
存在の/Cめに浸漬ヒータの機能を阻害することもない
。 この発明の実施例を、以上図面を参照して説明する。な
お、この明細書において、前とは第1図の下側を、後と
は同」−側をいうものとりる。 また図示の保温炉はアルミニウム溶湯用のものである。 保温かには、溶湯供給室(1)ど溶湯汲出し室(2)と
が第1隔壁(3)を介して前後に配顕せられているとと
もに、画室(1)(2)の一側方にこれらの全長にわた
る加熱室(4)が第2隔壁(5)を介して配首口られ(
いる。第2隔壁(5)の下部には、溶湯供給室(1)ど
溶湯加熱室(4)とを通じる第1通路(6) J3よび
溶湯加熱室(4)ど溶湯汲出し室(2)とを通じる第2
通路(7)とがそれぞれ段tJられ、第1隔壁(3)の
下部には、溶湯供給室(1)と溶湯汲出し室(2)とを
通じる付加通路(8)が設(プられている。、 加熱室(4)の蓋(9)には、複数の浸漬ヒータ(10
)と、ヒータ保護筒(11)とが垂下状、に設けられて
おり、ヒータ保護筒(11)の下端が溶湯汲出しによる
場面下降限(B)より下方に位置J−るようになされて
、13す、かつ浸漬ヒータ(10)の外周面どヒータ保
護筒(11)の内周面間に間隔が設けられている。 溶湯供給室(1)にも薔が施されるが図示は略されてい
る。通路(6)〜(8)の下端は、保温炉の底に達して
おり、かつ第1通路(6)は第2通路(7)に比べC小
さく形成せられている。それは、溶湯供給室(1)には
、溶湯供給時酸化物が発生覆るので、これが溶湯加熱室
(4)に流入するのを阻止り−るためと、溶湯加熱室(
4)内における溶湯の流速をなるへく小さくするためで
ある。またイ」油通路(8、’) t)本来湯を流通J
°るためのものではないから、第1通路(6)と同様に
小さく形成Uられ−Cいる。 浸漬ヒータ(10)は、棒状の発熱体(12)が−[端
に鍔(13)を有する有底の絶縁管(14)に収められ
たものであり、絶縁管(14)の開L1部が鍔イ」き環
状栓(15)で塞がれ、光熱体(12)の上端部がこれ
より上方に突出しているものである。蓋(9)は断熱耐
火ta(16)の土面になス板(11)が貼られたもの
であり、浸漬ヒータ(10)はこれを貞通して下方にの
び、ぞの絶縁質(14)の上端部(13)が鉄板(17
)の」−面に固6I!られている。ヒータ保護筒(11
)の1端にGJ、鍔(18)が設けられてJ3す、これ
が審(9)の断熱耐火U(1G)中に埋入されかつ鉄板
(11)下面に設けられた垂直断面L−形の鉄製掛止め
部材(19)の水平部(19a)に引掛けられ、これに
よりヒータ保護筒(11)は蓋(9)に固定せられてい
る。絶糺管(14)およびヒータ保護筒(11)には、
アルミニウムやその溶滓に侵食されずしかも熱伝導率が
高く耐熱性を有Jる材料が用いられてa5す、具体的に
はSiCまlCは5iaN4などが適している。 イrお、第4図において、(Δ)は場面上昇限、(20
)、は湯面イ」近に発生したツ滓を示す・上記伯” !
炉にJ3いて1、溶湯汲出室(2)の溶湯内に、溶湯汲
出しのために取鍋を沈めると、その分たり)8渇の容積
が増えるので、第2通路(7)にり溶湯汲出室(2)と
連通している溶湯加熱室(4)の場面ばいつlCん、F
昇づるが、溶湯を汲出すと逆に場面ば降[・づる。また
溶湯を溶湯供給室(1)へ供給するど、これと第゛1通
路(6)と連通している溶湯加熱室(/I)の場面が上
背する。イ」油通路(8)は溶湯加熱室(4)に出入り
する溶湯の流速を(ItW LL L、めイ)が、ヒー
タ保護筒(11)は溶湯加熱室(4)に出入りする溶湯
、の波の影響が浸゛)C1ヒータ(10)に及ぶのを阻
止する。さらにヒータ保護筒(11)は、浸漬ヒータ(
10)に湯面の溶滓が付着りるのを防ぐ。 4、図面の簡単な説明 図面はこの光明の実施例を承りもの(・、第1図は溶湯
供給室の蓋を除去しかつ溶湯加熱室の蓋を切欠いた保温
炉全体の平面図、第2図μ第1図の、n−■線にそう断
面図、第3図(よ第114のI[1−111線にそう断
面図、第4図は第33図に(13【プる浸ij’iヒー
タA3 J:ぴヒータ保温管部分の拡大断面図である。 (4〉・・・加熱室、くっ)・・・蓋、(10)・・・
浸漬ヒータ、(11)・・・ヒータ保設管、(B)・・
・湯面下降限。 以 上 外4名
The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of the entire insulating furnace with the indigo removed from the molten metal supply chamber and the lid of the molten metal heating chamber cut away, and FIG. II-, a cross-sectional view taken along the I line; Figure 3 is a cross-sectional view taken along the ■-■ line in Figure 1; Figure 4 is an enlarged cross-sectional view of the immersion heater and heater insulation tube portion in Figure 3; be. (4)...Heating up, (9)...Lid, (1o)...
Immersion heater, (11)... Heater protection tube, (B)...
・Hot water level lowering limit. Applicant for the above patent: Hiroshi Yoshimura No. 2 Do 1 Figure 4 Procedural amendment dated August 26, 1981 1 Case summary 1981 Special Application No. 123969 2 Name of the invention Insulation furnace 3 , the corrector! I! 1' Relationship with Special y Applicant 4, Agent 5 Date of amendment order Showa 1920 Month 6 Number of investigations increased by amendment 7 Target of amendment Full text of the specification 8 Explanation of contents of supplement J1. M. Book (Amendment) 1. Name of the invention Warming furnace 2. Claims An immersion heater (10) and a heater heat-insulating cylinder (11) are installed in the swallow (9) of the heating chamber (4) in a drape shape. The lower end of the heater protection gap (11) is the lower limit of the molten metal level (
B) Is the position lower than i? It is designed to be
and the outer circumferential surface of the immersion heater (01) and the heater holding cylinder (11).
) is spaced between the inner circumferential surfaces of F;! A heated furnace. 3. Detailed description of the invention. This invention relates to a heat retention furnace that maintains the molten state of metals such as aluminum. However, recently, in order to increase heating efficiency, heating furnaces that directly heat the molten metal using an immersion heater have been used.However, heaters that are constantly immersed in the molten metal are prone to breakage due to the following phenomena. Generally, an oxide film is formed on the surface, but if the molten metal is aluminum, an aluminum oxide film will be formed on the surface. The above-mentioned oxidation-preventing film serves to prevent the oxidation of aluminum. However, when pouring and drawing hot water, waves are generated as the surface of the hot water falls, and as a result, the oxidation-preventing film is torn and exposed through the breaks. The metal surface of the molten aluminum is newly oxidized, and a part of the aluminum oxide film that was destroyed during pumping is once caught at the bottom of the molten metal and then floats to the surface after a certain period of time, so that slag gradually forms. This increases and forms a 13M shape on the outer periphery of the immersion heater, which corresponds to the surface of the hot water. Therefore, local heating occurs throughout the year in this part of the immersion heater, resulting in strength deterioration. As shown, waves occur in pouring hot water J:bikumiyu 11,1,
In particular, when drawing water, the waves are not only larger than when pouring water, but also
ll [1 Correct recycling of water will amplify the waves,
This creates undulations that impact the immersion heater. A part of the wave energy hits the immersion heater and is absorbed, but on the other hand, the immersion heater absorbs energy from the deteriorated part.
There is a problem that it does not work. An object of the present invention is to provide a 17-temperature furnace that solves the problems described above. In order to achieve the above object, the heat retention furnace according to the present invention has an immersion heater and a heater protection cylinder provided in a hanging manner on the lid of the heating chamber, and the lower end of the heater protection cylinder is connected to the It is positioned below the scene lowering limit, and a space is provided between the outer circumferential surface of the immersion heater and the inner circumferential surface of the heater protection cylinder. In the heat retention furnace according to the present invention, an immersion heater and a heater protection tube are installed in a hanging manner on the lid of the heating chamber, and the lower end of the heater control 1fS1 is located below the lower limit of the melt level by pumping out the molten metal. As a result, the immersion heater is prevented from being exposed to molten metal Gl 54, and since the heater protection tube acts as a breakwater, it is not affected by the waves of the molten metal.Therefore, the durability of the immersion heater is reduced. The horns are significantly improved compared to conventional ones.Also, there is a gap between the outer circumferential surface of the 1c immersion heater and the inner circumferential surface of the heater protection cylinder, so
The molten metal will also exist during this time, and the function of the immersion heater will not be inhibited due to the presence of the heater protection cylinder. Embodiments of the invention will be described with reference to the drawings. In this specification, the front refers to the lower side of FIG. 1, and the rear refers to the same side. The illustrated heat retention furnace is for molten aluminum. For insulation, a molten metal supply chamber (1) and a molten metal pumping chamber (2) are arranged in front and behind each other via the first partition wall (3), and one side of the compartment (1) and (2) is provided. On the other hand, a heating chamber (4) extending over the entire length of these chambers is connected through a second partition wall (5) with a neck opening (
There is. At the bottom of the second partition (5), there is a first passage (6) J3 that communicates with the molten metal supply chamber (1), the molten metal heating chamber (4), the molten metal heating chamber (4), and the molten metal pumping chamber (2). The second through
The passages (7) are arranged in stages, and an additional passage (8) is provided at the lower part of the first partition wall (3) to communicate with the molten metal supply chamber (1) and the molten metal pumping chamber (2). A plurality of immersion heaters (10
) and a heater protection tube (11) are provided in a hanging shape, and the lower end of the heater protection tube (11) is positioned below the scene lowering limit (B) due to pumping out the molten metal. , 13, and the outer circumferential surface of the immersion heater (10) and the inner circumferential surface of the heater protection cylinder (11). The molten metal supply chamber (1) is also covered with roses, but is not shown. The lower ends of the passages (6) to (8) reach the bottom of the heat retention furnace, and the first passage (6) is formed to be smaller in C than the second passage (7). This is because oxides are generated in the molten metal supply chamber (1) when the molten metal is supplied, and this is to prevent this from flowing into the molten metal heating chamber (4).
4) The purpose is to minimize the flow velocity of the molten metal within. Also, the oil passage (8,') t) The original hot water distribution J
Since it is not intended to be used for moving around, it is formed small like the first passage (6). In the immersion heater (10), a rod-shaped heating element (12) is housed in a bottomed insulating tube (14) having a flange (13) at the end, and the open L1 portion of the insulating tube (14) is closed with an annular stopper (15) with a flange, and the upper end of the photothermal body (12) projects upwards from this. The lid (9) is made of an insulating fireproof ta (16) with a base plate (11) pasted on the soil surface, and the immersion heater (10) passes through this and extends downward. ) the upper end (13) of the iron plate (17
)'s '-side hard 6I! It is being Heater protection tube (11)
) is provided with GJ and tsuba (18) at one end of J3, which is embedded in the heat-insulating and fireproof U (1G) of the board (9) and is L-shaped in vertical cross section provided on the lower surface of the iron plate (11). The heater protection tube (11) is hooked onto the horizontal portion (19a) of the iron hooking member (19), thereby fixing the heater protection tube (11) to the lid (9). The insulation tube (14) and the heater protection tube (11) include
A material that is not corroded by aluminum or its slag, has high thermal conductivity, and is heat resistant is used. Specifically, SiC, 5iaN4, etc. are suitable. In Figure 4, (Δ) is the scene rise limit, (20
), indicates the slag that occurred near the hot water surface.
When the ladle is submerged in the molten metal in the molten metal pumping chamber (2) to pump out the molten metal in the furnace, the volume of the molten metal increases by that amount, so the molten metal flows into the second passage (7). Scenes of the molten metal heating chamber (4) communicating with the pumping chamber (2)
It rises, but when the molten metal is pumped out, the situation is reversed. Further, when the molten metal is supplied to the molten metal supply chamber (1), the scene of the molten metal heating chamber (/I) communicating with this and the first passage (6) is turned upside down. The oil passage (8) controls the flow rate of the molten metal entering and exiting the molten metal heating chamber (4), and the heater protection tube (11) controls the flow rate of the molten metal entering and exiting the molten metal heating chamber (4). This prevents the influence of waves from reaching the immersion C1 heater (10). Furthermore, the heater protection tube (11) is designed to protect the immersion heater (
10) Prevent slag from adhering to the surface of the hot water. 4. Brief explanation of the drawings The drawings are based on the embodiment of this light (Figure 1 is a plan view of the entire heat retention furnace with the lid of the molten metal supply chamber removed and the lid of the molten metal heating chamber cut away, Figure 2) Figure 1 is a sectional view taken along line n-■, Figure 3 is a sectional view taken along line 1-111 of Figure 114, Figure 4 is a sectional view taken along line 'i Heater A3 J: This is an enlarged sectional view of the pi-heater insulating tube part. (4>...heating chamber, ku)...lid, (10)...
Immersion heater, (11)... Heater storage tube, (B)...
・Hot water level lowering limit. 4 people other than the above

Claims (1)

【特許請求の範囲】[Claims] 浸漬ヒータ(10)と、ヒータ保護筒(11)とが加熱
室(4)の蓋(9)に垂下状に設けられており、ヒータ
保護筒(11)の下端が溶湯汲出しによる湯面下降限(
B)より下方に位置するようになされており、かつ浸漬
ヒータ(10)の外周面とヒータ保護筒(11)の内周
面間に間隔が設番プられている保温炉。
An immersion heater (10) and a heater protection tube (11) are provided in a hanging manner on the lid (9) of the heating chamber (4), and the lower end of the heater protection tube (11) prevents the melt level from falling due to pumping out the molten metal. Limited (
B) A heat-retaining furnace that is located below the immersion heater (10) and has an interval between the outer circumferential surface of the immersion heater (10) and the inner circumferential surface of the heater protection tube (11).
JP12396983A 1983-07-06 1983-07-06 Heat-insulating furnace Pending JPS6016292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12396983A JPS6016292A (en) 1983-07-06 1983-07-06 Heat-insulating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12396983A JPS6016292A (en) 1983-07-06 1983-07-06 Heat-insulating furnace

Publications (1)

Publication Number Publication Date
JPS6016292A true JPS6016292A (en) 1985-01-28

Family

ID=14873793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12396983A Pending JPS6016292A (en) 1983-07-06 1983-07-06 Heat-insulating furnace

Country Status (1)

Country Link
JP (1) JPS6016292A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214825A (en) * 1986-03-17 1987-09-21 Mitsubishi Heavy Ind Ltd Roller leveler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214825A (en) * 1986-03-17 1987-09-21 Mitsubishi Heavy Ind Ltd Roller leveler

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