JPS58213827A - Shadow mark reducer of heating furnace for metallic piece - Google Patents
Shadow mark reducer of heating furnace for metallic pieceInfo
- Publication number
- JPS58213827A JPS58213827A JP9703682A JP9703682A JPS58213827A JP S58213827 A JPS58213827 A JP S58213827A JP 9703682 A JP9703682 A JP 9703682A JP 9703682 A JP9703682 A JP 9703682A JP S58213827 A JPS58213827 A JP S58213827A
- Authority
- JP
- Japan
- Prior art keywords
- heated
- heating furnace
- burner
- shadow
- combustion
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、圧延機の前段に設置されて、スラブ、ブルー
ム、ビレットなどの金属片を圧延温度まで加熱する金属
加熱炉におけるシャドウマーク低減装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shadow mark reduction device in a metal heating furnace that is installed upstream of a rolling mill and heats metal pieces such as slabs, blooms, and billets to rolling temperature.
従来のこの種の金属片加熱炉は、たとえば、第１図およ
び第２図に示すような構造になっている。すなわち、第
１図および第２図において、ａは被加熱材、ｂは加熱炉
、Ｃは被加熱材ザポート、ｄは前記被加熱材ａの進行方
向を示す矢印、ｅは上部バーナ、ｆは下部バーナ、ｇは
後述する助燃バーナ、ｈは抽出端下部壁であり、丑だ第
２図において、」は炉床、Ｊはポートである。そして、
第１図」３・よび第２図にみられる鋼片なとの被加熱４
Ａａは、加熱炉す内で被加熱材ザボートＣ上を矢印ｄの
方向に移動しながら」二部バーナＯと１・一部ノ・−す
ｆ′により加熱される。A conventional metal piece heating furnace of this type has a structure as shown in FIGS. 1 and 2, for example. That is, in FIGS. 1 and 2, a is the material to be heated, b is the heating furnace, C is the material to be heated, Zaport, d is an arrow indicating the direction of movement of the material to be heated, e is the upper burner, and f is the upper burner. A lower burner, g is an auxiliary combustion burner to be described later, h is a lower wall of the extraction end, and in Fig. 2, ``'' is a hearth, and J is a port. and,
Fig. 1" 3. Heated steel plate 4 seen in Fig. 2.
Aa is heated by the two-part burner O and the first part f' while moving in the direction of arrow d on the material to be heated C in the heating furnace.
ところが、前ｉＩＬ被加被加熱ギザボート、内部が冷却
媒体により冷却さノ１．ているため、該サボ−ｌ−ｃに
接する今皮加熱）ｌＡａの部分は該ザボートｃＶｃ」：
り冷却されて、他の部分より低温となる。However, the interior of the heated Giza boat to which the iIL is applied is cooled by the cooling medium. Therefore, the part of the current skin heating) lAa that is in contact with the sabot-lc is the sabo-cVc':
The area is cooled down to a lower temperature than other parts.
さらに、該ザボーｉ ｃは下部・く−ナｆからふく射さ
７″ｌた熱にズ・１１７て影を生じ、下部ノ・−すｆか
らふく射された熱が被加熱材ａに到達するのを妨げるた
め、該ザボートＣの近傍の被加熱材ａの部分は他の部分
より低温となる。これらの低温の１ノζ態を、一般に、
シャドウマークと称している。In addition, the heat radiated from the lower corner f produces a shadow due to the heat radiated from the lower corner f, which prevents the heat radiated from the lower corner f from reaching the heated material a. In order to prevent
It's called Shadowmark.
このンヤドウマ−りを低減する目的で、従来は、助燃バ
ーナｇを便１１１シている。すなわち、第１図の加熱炉
１１でｔ；Ｊｌ、助燃バーナｇを加熱炉すの抽出端下部
壁１１にＪｌｉＶ （Ｔｊけており、第２図の加熱炉す
では、助・燃バーナｇを加熱炉すの炉床１に取イ」けて
いる。つまり、いずれも、助・燃バーすｇからの燃焼ガ
スを、単に、被加熱ｉ７ａのシャ）・ウマーク部に当て
てンヤトウマーク部分を加熱して、ンヤドウマークを低
減しようとするものであるため、次の問題点がある。In order to reduce this yadomaru, an auxiliary combustion burner G has conventionally been used. That is, in the heating furnace 11 of FIG. 1, t; It is placed on the hearth 1 of the heating furnace.In other words, in both cases, the combustion gas from the auxiliary/combustion bar g is simply applied to the heat mark part of the heating target i7a to heat the heat mark part. Since this method is intended to reduce the appearance of dark marks, there are the following problems.
すなわち、第１に、上部バーナｅと下部・・−すｆから
出る燃焼ガスの流れ、お・よび加熱炉す内の高温ガスの
有する浮力により生ずる加熱炉ｌ）内のガスの流れの影
響により、助・燃・く−ナｇから出た燃焼ガスの流れが
乱されるため、助燃バーナｇから出た燃焼ガスが所期の
７ヤトウマ一ク部分に当らないことがある。このため、
／ヤトウマークの低減が効果的に行なわれないばかりで
なく、シャドウマーク以夕↓の部分を局部的に過熱する
ことにもなる。とくに、助燃ノ・−ノーｇの燃焼量を定
格容量より少なくするほと、助燃・・−すｇから出る燃
焼ガスの運動量が小さくなるために流れが乱れやすくな
り、この傾向が著しくなる。第２に、第２図に示すもの
では、被加熱材ａから落下するスケールが助燃バーナＲ
のボートＪを部分的に塞いだ場合、助・燃バーナ区のポ
ー１−ｊから出る燃焼ガスの噴き出し方向が変わるため
、その燃焼ガスが所期のンヤドウマーク部分に当らなく
なる。このため、前記第１に述べたと同様に、シャドウ
マークの低減が効果的に行なわれないばかりでなく、シ
ャドウマー り以外の部分を局部的に過熱することにも
なる。第６に、どくに第２図に示すものでは、被加熱＋
Ａａから落下するスケールが助燃ノく−ナｇの中に入っ
た場合４．・よび助燃ノ・−すｇのポートＪを塞いだ場
合は、助燃バーナｇの燃焼が著しく阻害されることにな
る。第４に、第１図および第２図に示すいずれのものも
、助燃ノく−ナｇからの燃焼ガスが、直接、シャドウマ
ーク低減のための熱源となる。したがって、助燃ノ＜−
す区からの燃焼ガスの影響を受ける前の７ヤドウマーり
の大きさと、被加熱１ｇＪ ａの加熱炉すからの抽出時
に〃１容されるシャト゛ウマークの大きさの差に応して
、ンヤトウマーク近傍の燃焼ガスの温＋Ｗを制御するよ
うに助燃ノく−ナｇの燃焼量を制御する必要がある。と
ころが、−に記第１と第２に述へたように、助燃バーナ
ｇからの燃焼ガスの流れが、操炉条件、助燃バーすｇの
燃焼量、スケールの影響により、所期のシャドウマーク
部分に当らない場合には、シャドウマーク近傍の燃焼ガ
スの温度を制御した場合に、シャドウマーク以外の部分
を局部的に過熱することになり、その制御が効果的に行
なわれないばかりでなく、悪影響を及ぼすことにもなる
。That is, firstly, due to the influence of the flow of combustion gas coming out of the upper burner e and the lower part f, and the flow of gas in the heating furnace l) caused by the buoyancy of the high temperature gas in the heating furnace. Since the flow of the combustion gas emitted from the auxiliary combustion burner g is disturbed, the combustion gas emitted from the auxiliary combustion burner g may not hit the intended portion of the 7-year mark. For this reason,
Not only is the Yato mark not effectively reduced, but the area below the shadow mark is also locally overheated. In particular, when the combustion amount of the auxiliary combustion gas is made smaller than the rated capacity, the momentum of the combustion gas emitted from the auxiliary combustion gas becomes smaller, making the flow more likely to be disturbed, and this tendency becomes more pronounced. Secondly, in the case shown in FIG.
If the boat J is partially blocked, the direction of the combustion gas emitted from the port 1-j of the auxiliary/combustion burner section changes, so that the combustion gas no longer hits the intended Yadou mark. For this reason, as described in the first point above, not only is the reduction of shadow marks not performed effectively, but also parts other than the shadow marks are locally overheated. Sixth, in the case shown in Figure 2, the heated +
4. If the scale falling from Aa gets into the auxiliary combustion engine.4. If the port J of the auxiliary combustion burner g is blocked, the combustion of the auxiliary combustion burner g will be significantly inhibited. Fourthly, in both of the apparatuses shown in FIGS. 1 and 2, the combustion gas from the auxiliary combustion engine directly serves as a heat source for reducing shadow marks. Therefore, auxiliary combustion <-
According to the difference between the size of the 7 yado mark before being affected by the combustion gas from the 1gJa heating furnace and the size of the 1 yado mark that is extracted from the heated 1 gJ a heating furnace, It is necessary to control the combustion amount of the auxiliary combustion gas so as to control the temperature +W of the combustion gas. However, as mentioned in Parts 1 and 2 of -, the flow of combustion gas from the auxiliary burner g is affected by the operating conditions, the amount of combustion of the auxiliary burner g, and the scale, causing the expected shadow mark. If the temperature of the combustion gas near the shadow mark is controlled, the area other than the shadow mark will be locally overheated, and the control will not be effective. It will also have a negative impact.
本発明は、従来技術に存していた」１記の問題点′ｆ：
′ＰＩ４決するためになされたもので、すなわち、加熱
炉内のガスの流れや助燃・・−すから出る燃焼ガスの運
動量に影響されずに、確実にシャドウマークの低減が可
能であり、かつ、助燃バーナの燃焼が被加熱材から落ト
するスケールによって阻害されることがなく、しかも、
温度制御を確実に行なうことができる金属片加熱炉のシ
ャドウマーク低減装置を提供することを目的とするもの
である。The present invention addresses the problems described in item 1'f that existed in the prior art:
'PI4 was developed to reduce shadow marks reliably without being affected by the flow of gas in the heating furnace or the momentum of the combustion gas emitted from the auxiliary combustion engine, and Combustion of the auxiliary burner is not inhibited by scale falling from the heated material, and
It is an object of the present invention to provide a shadow mark reduction device for a metal piece heating furnace that can reliably control the temperature.
このため、本発明の構成は、金属片加熱炉の抽出Ｏ：Ｉ
Ｉ：下部壁と炉床の少なくとも一方に取付けられたンヤ
トウマーク低減用の助燃・・−す全備えた金属片加熱炉
において、該加熱炉の炉内に設置されて前記助燃バーナ
からの燃焼ガスを導く水・ＩＬ線部分該ガスを該炉内に
放出する開放端とを有するふく信管を備え、かつ、該ふ
く信管の前記水平部分が被加熱Ａ′Ａの１・−向よりも
下位に位置（〜ているとともに被加熱４Ａザボートの水
平部分の近傍に位置し一〇いることを特徴としている。For this reason, the configuration of the present invention is such that the extraction O:I of the metal piece heating furnace is
I: In a metal piece heating furnace equipped with an auxiliary combustion burner for reducing burn marks attached to at least one of the lower wall and the hearth, a metal piece heating furnace is installed in the furnace of the heating furnace to supply combustion gas from the auxiliary burner. A fuze having an open end for discharging the gas into the furnace, and the horizontal portion of the fuze being located below the 1-direction of the heated A'A. (It is characterized by being located near the horizontal part of the 4A boat to be heated.
以下、本発明の実施態様について、第５図ないし第７図
を参照しながら説明する。Embodiments of the present invention will be described below with reference to FIGS. 5 to 7.
第６図および第４図は本発明の第１実施例を示したもの
で、同図においで、１は鋼片などの被加熱４」、２は加
熱炉、３Ｃ５被加熱材ザポート、４は前記被加熱月１の
進行方向を示す矢印、５は上部バーナ、６は４：部バー
ナである。すなわち、被加熱材１は加熱炉２内で、被加
熱材サポート６上を矢印４の方向に移動しながら−に１
部バーナ５と下部乙により加熱される。また同図におい
て、７は抽出端下部壁、８はシャドウマーク低減用の助
燃バーナ、９は炉床で、ここ捷ては、前述の第１図のも
のと大差がない。つぎに、１０は前記助燃バーナ８の炉
内側に設置されたふく信管で、金属製またけセラミック
製の中空の管状をしていて、水平部分１１と開放端１２
とを有し、該水平部分１１は、被加熱材１の下面よりも
下位に位置しているとともに、第４図にみられるように
、被加熱材ザボート６の水平部分、つまり、被加熱材１
が該ザポー）・乙に接する個所の近傍に平行に配置され
ている。したがって、助燃バーナ８から出た燃焼ガスは
、ふく耐着１０内を流れ、ふく信管１０の開放端１２か
ら炉内に放出される。すなわち、助燃・々−す８の燃焼
により発生した熱は、ふく信管１０を加熱し、ふく信管
１０の水平部分１１からのふく射熱により、被加熱材１
の７ヤドウマ一ク部分を加熱するので、加熱炉２内のガ
スの流れなどに影響されずに、シャドウマークが低減さ
れ、る。6 and 4 show the first embodiment of the present invention, in which 1 is a heated material such as a steel billet 4'', 2 is a heating furnace, 3C5 is a heated material Zapoto, and 4 is a An arrow indicates the direction of movement of the heated moon 1, 5 is an upper burner, and 6 is a 4:part burner. That is, the heated material 1 moves in the direction of the arrow 4 on the heated material support 6 in the heating furnace 2 while moving -1.
It is heated by the lower part burner 5 and the lower part B. Further, in the same figure, 7 is a lower wall of the extraction end, 8 is an auxiliary combustion burner for reducing shadow marks, and 9 is a hearth, which are not much different from those in FIG. 1 described above. Next, reference numeral 10 denotes a fuse installed inside the furnace of the auxiliary combustion burner 8, which is in the shape of a hollow ceramic tube with a metal straddle, and has a horizontal portion 11 and an open end 12.
The horizontal portion 11 is located below the lower surface of the material to be heated 1, and as shown in FIG. 1
are arranged parallel to each other near the point where they touch the part. Therefore, the combustion gas discharged from the auxiliary burner 8 flows through the fuse 10 and is discharged from the open end 12 of the fuse fuse 10 into the furnace. That is, the heat generated by the combustion of the auxiliary combustion chamber 8 heats the fuze 10, and the heated material 1 is radiated from the horizontal portion 11 of the fuze 10.
7, the shadow mark is reduced without being affected by the gas flow in the heating furnace 2.
第５図な才本発明の第２実施例を示したもので、助・燃
バーナ８を抽出端下部壁７の比較的下方に設けで、ふく
信管１０の水平部分１１と該バーナ８の間が胴部になっ
ている点で、前記第１実施例と僅かに相違するだけであ
るので、詳細説明については、省略する。FIG. 5 shows a second embodiment of the present invention, in which an auxiliary/combustion burner 8 is provided relatively below the lower wall 7 of the extraction end, and between the horizontal portion 11 of the fuse 10 and the burner 8. The second embodiment is only slightly different from the first embodiment in that the second embodiment is the body, so a detailed explanation will be omitted.
第６図は本発明の第３実施例を示したもので、助燃バー
ナを炉床９に設けた場合である。したがって、ふく信管
１０の水平部分１１と該バーナ８の間は鉛直部となって
いる。この実施例においても、ふく信管１０の水平部分
１１からのふく射熱により、被加熱材１のシャドラマ−
り部分ケ加熱するので、加熱炉２内のガスの流れなどに
影響されずに、シャドラマ−りが低減される。しかも、
助燃バーナ８にはふく信管１０が取付けられているため
、被加熱材１から落下するスケールが助燃バーナ８のボ
ートなどに入ることがない。FIG. 6 shows a third embodiment of the present invention, in which an auxiliary burner is provided in the hearth 9. Therefore, the space between the horizontal portion 11 of the fuze 10 and the burner 8 is a vertical portion. In this embodiment as well, the heat radiated from the horizontal portion 11 of the fuse 10 causes the shadrama of the heated material 1 to rise.
Since the heated portion is heated, the shadow flow is reduced without being affected by the flow of gas in the heating furnace 2. Moreover,
Since the fume fuse 10 is attached to the auxiliary combustion burner 8, scale falling from the material to be heated 1 does not enter the boat of the auxiliary combustion burner 8.
第７図は本発明の第４実施例を示したもので、とくに、
温度制御装置の一例を示している。この制御装置は、ふ
く対外面温度検出器としての熱電対１３と、演算器１４
と、温度指示調節計１７なととからなっている。すなわ
ち、ふく信管１０の水平部分１１の外面には前記熱電対
１３が取付けられており、演算器１４は被加熱材１の加
熱炉２からの抽出時に許容されるンヤトウマークの大き
さを人力として、シャドウマーク低域のために必要なふ
く射管外面温度を出力する演算器である。なお被加熱月
１の寸法、在炉時間、加熱パターンなどを演算器１４に
入力すれは、さらに正確な制御が可能である。FIG. 7 shows a fourth embodiment of the present invention, in particular,
An example of a temperature control device is shown. This control device includes a thermocouple 13 as a temperature detector for the outer surface of the cloth, and a calculator 14.
and a temperature indicating controller 17. That is, the thermocouple 13 is attached to the outer surface of the horizontal portion 11 of the fuze 10, and the calculator 14 manually calculates the size of the mark that is allowed when the material to be heated 1 is extracted from the heating furnace 2. This is a calculation unit that outputs the radiation tube outer surface temperature necessary for shadow mark low range. In addition, more accurate control is possible by inputting the dimensions of the heated month 1, the time in the furnace, the heating pattern, etc. to the calculator 14.
第７図に示すように構成された温度制御装置においては
、熱電対１５により検出されたふく射管外面温度の信号
１５と、演算器１４により出力された必要なふく射管外
面温度の信号１６とを、温度指示調節計１７へ入力し、
ここで、両信号１５と１６が比較されて、その偏差が温
度指示調節計１７の出力信号１８となり、その偏差がな
くなるように、前記信号１８に」＝す、助燃バーナ８へ
の配管中の燃料流量調節弁１９および燃焼空気流＠調節
弁２０の開度を調節して、助燃バーツー８の燃焼量を制
御する。In the temperature control device configured as shown in FIG. , input to the temperature indicating controller 17,
Here, both signals 15 and 16 are compared, and the deviation becomes the output signal 18 of the temperature indicating controller 17. The combustion amount of the auxiliary combustion bar two 8 is controlled by adjusting the opening degrees of the fuel flow rate control valve 19 and the combustion air flow @ control valve 20.
なお第７図でｔま、助燃バーナ８が抽出端下部壁７に取
ｆ＝Ｉけら、ＩＩているものを示したが、第６図の」こ
うに炉床９にｉｌ’ｉ （；Ｉけられているものについ
ても、同様にして温度制御をすることができる。Although Fig. 7 shows that the auxiliary burner 8 is attached to the bottom wall 7 of the extraction end, it is shown that the auxiliary burner 8 is attached to the hearth 9 as shown in Fig. 6. Temperature control can be performed in the same way for items that are exposed to heat.
このように、本発明は、シャドウマーク低減用の助燃バ
ーナの炉ピｉ １ｌｉｌｌに、該バーナからの燃焼ガス
を導く水平部分と該ガスを炉内に放出する開放端とをイ
ｊするふく躬行が設置されていて、該水平部分が被加熱
４」の■而よりも下位に位置しているとともに被加熱４
Ａザボートの水平部分の近傍に位置しているので、前記
助燃バーナから出る燃焼ガスは、ふく躬行の中を流れて
該ふく躬行を加熱１〜、該ふく躬行の水平部分からのふ
く射熱により、ンヤドウマ−り部分全加熱するため、加
熱炉内のガスの流Ｊ′１．や助燃バーナから出る燃焼ガ
スの運動ｍｌ”に影響されずに、確実に７ヤドウマーク
の低減が可能となり、また助燃バーすの燃焼が被加熱材
から落［するスケールによって阻害されることもない。As described above, the present invention provides a furnace piping of an auxiliary combustion burner for reducing shadow marks, which includes a horizontal part that guides combustion gas from the burner and an open end that releases the gas into the furnace. is installed, and the horizontal part is located lower than the heated target 4.
Since the boat A is located near the horizontal part of the boat, the combustion gas emitted from the auxiliary combustion burner flows through the windrow and heats the firerow. - The gas flow inside the heating furnace J'1. It is possible to reliably reduce the 7-yado mark without being affected by the motion of the combustion gas emitted from the auxiliary combustion burner, and the combustion of the auxiliary combustion bar is not inhibited by scale falling from the heated material.
しかも、シャドラマ−り低減のだめの直接の熱源はふく
躬行であり、該ふく躬行の位置は固定されているため、
ふく耐着外面の温度を制御することにより、／ヤトウマ
ーりの大きさの制御が可能であり、かつ、助燃バーナに
よる被加熱材の局部的な過熱が生じないなど、本発明の
秦する効果は、きわめて犬である。In addition, the direct heat source for reducing Shadradrama is the windshield, and the position of the windshield is fixed, so
The advantageous effects of the present invention include that by controlling the temperature of the adhesion-resistant outer surface of the cloth, it is possible to control the size of the scorch, and that local overheating of the material to be heated by the auxiliary combustion burner does not occur. , very doglike.
第１図は従来の鋼片加熱炉の１つの例を示した一部切欠
断面側面図、第２図は同じくもう１つの例全示した一部
切欠断面側面図、第６図は本発明の第１実施例を示した
一部切欠断面側面図、第４図は第６図の切断線Ａ−Ａに
沿う断面正面図、第５図は本発明の第２実施例を示した
一部切欠断面側面図、第６図は同じく第６実施例を示し
た一部切欠断面側面図、第７図は同じく第４実施例を示
した説明図である。
１・・・被加熱材、２・・・加熱炉、３・・・被加熱オ
Ａザポ−１・、７・・・抽出端下部壁、８・、・助燃バ
ーナ、９・・・炉床、１０・・・ふく躬行、１１・・・
水５Ｖ部、１２・・・開放端。
特許出願人 石川島罹廟重工業株式会社同 日
本鋼管株式会社
第３闇
率４剛Fig. 1 is a partially cut-away side view showing one example of a conventional steel billet heating furnace, Fig. 2 is a partially cut-away side view showing another example, and Fig. 6 is a partially cut-away side view showing another example. FIG. 4 is a partially cut-away side view showing the first embodiment, FIG. 4 is a front cross-sectional view taken along cutting line A-A in FIG. 6, and FIG. 5 is a partially cut-away side view showing the second embodiment of the present invention. FIG. 6 is a partially cutaway side view showing the sixth embodiment, and FIG. 7 is an explanatory view showing the fourth embodiment. DESCRIPTION OF SYMBOLS 1... Material to be heated, 2... Heating furnace, 3... Heated oven 1, 7... Lower wall of extraction end, 8... Assist burner, 9... Furnace Floor, 10...Fukumugyo, 11...
Water 5V part, 12...Open end. Patent applicant: Ishikawajima Heavy Industry Co., Ltd. Nippon Kokan Co., Ltd.
Claims (1)
一方に取付けられたシャドウマーク低減用の助燃バーナ
を備えた金属片加熱炉において、該加熱炉の炉内に設置
されて前記助燃バーナからの・燃焼ガスを導く水平部分
と該ガスを該炉内に放出する開放端とを有するふく射管
を備え、かつ、該ふく射管の前記水平部分が被加熱材の
下面よりも下位に位置しているとともに被加熱材サポー
トの水平部分の近傍に位置していることを特徴とする、
金属片加熱炉のシャドウマーク低減装置。 ２ ふく射管の外面に取付けられた温度検出器と、被加
熱材の加熱炉からの抽出時に許容されるシャドウマーク
の大きさを入力としてシャドウマーク低減のために必要
なふく耐着外面温度ｆｆ：割算する演算器と、前記温度
検出器からのふく耐着外面温度の信月と該演算器から出
力される必要なふく耐外面温度の信号とを人力して該両
信号間の偏差を出力としてその偏差がなくなる」こうに
助燃バーナの燃焼量を制御する温度指示調節計とからな
る温度制御装置を備えている、％Ｗ［請求の範囲第１項
記載の装置。[Claims] 1. In a metal piece heating furnace equipped with an auxiliary combustion burner for reducing shadow marks attached to at least one of the bottom wall of the extraction end of the metal piece heating furnace and the hearth, An irradiation tube is installed and has a horizontal portion that guides combustion gas from the auxiliary combustion burner and an open end that releases the gas into the furnace, and the horizontal portion of the irradiation tube is located on the lower surface of the material to be heated. and is located in the vicinity of the horizontal portion of the heated material support,
Shadow mark reduction device for metal piece heating furnace. 2. Using the temperature detector attached to the outer surface of the radiation tube and the allowable shadow mark size when extracting the material to be heated from the heating furnace as input, calculate the flame adhesion resistance outer surface temperature ff required to reduce shadow marks: A calculation unit for division, a signal of the outer surface temperature of the cloth resistant to wear from the temperature detector, and a signal of the necessary outer surface temperature of the cloth outputted from the calculator are manually input, and the deviation between the two signals is output. %W [The apparatus according to claim 1, which is equipped with a temperature control device comprising a temperature indicating controller for controlling the combustion amount of the auxiliary burner so that the deviation is eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9703682A JPS58213827A (en) | 1982-06-08 | 1982-06-08 | Shadow mark reducer of heating furnace for metallic piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9703682A JPS58213827A (en) | 1982-06-08 | 1982-06-08 | Shadow mark reducer of heating furnace for metallic piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58213827A true JPS58213827A (en) | 1983-12-12 |
| JPH0135893B2 JPH0135893B2 (en) | 1989-07-27 |
Family
ID=14181307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9703682A Granted JPS58213827A (en) | 1982-06-08 | 1982-06-08 | Shadow mark reducer of heating furnace for metallic piece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58213827A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61198259U (en) * | 1985-05-28 | 1986-12-11 | ||
| JPS6275060U (en) * | 1985-10-24 | 1987-05-14 | ||
| WO1994008190A1 (en) * | 1992-10-05 | 1994-04-14 | Acon Finland Oy Ltd | Method and apparatus for improving the performance of a heating furnace for metal slabs |
-
1982
- 1982-06-08 JP JP9703682A patent/JPS58213827A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61198259U (en) * | 1985-05-28 | 1986-12-11 | ||
| JPH0421819Y2 (en) * | 1985-05-28 | 1992-05-19 | ||
| JPS6275060U (en) * | 1985-10-24 | 1987-05-14 | ||
| JPH0421820Y2 (en) * | 1985-10-24 | 1992-05-19 | ||
| WO1994008190A1 (en) * | 1992-10-05 | 1994-04-14 | Acon Finland Oy Ltd | Method and apparatus for improving the performance of a heating furnace for metal slabs |
| US5609785A (en) * | 1992-10-05 | 1997-03-11 | Acon Finland Oy Ltd. | Method and apparatus for improving the performance of a heating furnace for metal slabs |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0135893B2 (en) | 1989-07-27 |
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