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TW201105802A - A tower furnace for heat treatment of a metal strip - Google Patents

A tower furnace for heat treatment of a metal strip Download PDF

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Publication number
TW201105802A
TW201105802A TW099120562A TW99120562A TW201105802A TW 201105802 A TW201105802 A TW 201105802A TW 099120562 A TW099120562 A TW 099120562A TW 99120562 A TW99120562 A TW 99120562A TW 201105802 A TW201105802 A TW 201105802A
Authority
TW
Taiwan
Prior art keywords
section
muffle
metal strip
high temperature
tower furnace
Prior art date
Application number
TW099120562A
Other languages
Chinese (zh)
Inventor
Robert Ebner
Heribert Lochner
Original Assignee
Ebner Ind Ofenbau
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.)
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Publication date
Application filed by Ebner Ind Ofenbau filed Critical Ebner Ind Ofenbau
Publication of TW201105802A publication Critical patent/TW201105802A/en

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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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/66—Tower-type furnaces
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/52—Methods of heating with flames
    • 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
    • C21D9/0043—Muffle furnaces; Retort furnaces
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/60—Continuous furnaces for strip or wire with induction heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/02—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated of multiple-chamber type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045—Furnaces with controlled atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)

Abstract

A tower furnace for heat treatment of a metal strip (1) is described, comprising two superimposed muffles (5, 7) which are separated from one another and form a gas-heated preheating section (2) and an upwardly adjacent high-temperature section (3). In order to enable a shorter overall size of the tower furnace it is proposed that the upper muffle (7) for the high-temperature section (3) comprises an electrically non-conductive jacket with an induction heating (8) for the metal strip (1).

Description

201105802 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於金屬帶條熱處理之塔式爐，其包括二 重疊祕室’該二者係互相分離’且形成—氣熱式預熱區段及一 上方鄰接高溫區段。 【先前技術】 特別為鉻鋼或鎳鉻鋼製成之金屬帶條係於設計有或無一隔焰 至之塔式爐巾，於氫或―氫―I混合物之—姐氣體環境下，連 續地輝面退火。於—外部加熱隔財上熱處理金屬帶條之優點在 於可使用吼體燃燒器，而無排放氣體供給予該隔捣室内部中之 惰性氣體環境。無隔財之塔式爐具有—防火她，且以電氣式 加熱’而可達到較高爐溫。由於該防火爐襯裡略為透氣，因此當 該塔式爐開啟時，該襯裡將吸收周圍空氣，必須於可確保惰性氣 體，境下毫拱_地熱處理金屬帶條前，譬如藉使用氮氣沖除該 二乳。該播隔焰室塔式爐開啟後，其將於必要沖洗階段之數日内， 皆無法備妥再次運作。 為了使待處理金屬帶條達到鬲生產量，儘管有關連於一隔焰 室插入件之限制，然已知(歐洲專利案第EP 0 675 208 A1號)可將 播隔焰主尚溫區段連接至，配合有一隔焰室之一塔式爐預熱區 段，該隔焰室係形成可與該預熱區段分離之一機殼，而其接著又 設置於該預熱區段之機殼上。由於該高溫區段並無一隔焰室因 此可認為，出自該隔焰室之一較優地較低待處理帶條出口溫度， 將對該隔焰室有利。然而，該無隔焰室高溫區段與其防火襯裡， 將於該爐開啟後，要求較隔焰室爐者明顯長之一沖洗階段，而具 有一相對應增加之氫消耗量者，為其缺點。 為避免該缺點’亦已知(奥地利專利案第AT 408 452 A號)將 201105802 高溫區段亦配備一氣體加熱隔焰室。基於加諸於該高溫區段中隔 焰室長度上之限制，可限制該隔焰室因其自身重量造成之負荷， 如此將因可確保較低強度需求而導致一較高溫度容限，且如此仍 可確保待處理金屬帶條所需之最終溫度。儘管已將該塔式爐細分 成二隔焰室而能夠限制高溫區段中隔焰室之長度，然為達金屬二 條最終溫度所需之高溫隔焰室長度仍相當長。 【發明内容】 故，本發明據以為基礎之目的為，提出一種上述類型之用於 金屬帶條熱處理之塔式爐，其可使高溫區段中之隔焰室長度縮 短，及因此減少待處理金屬帶條之加熱時間。 藉由本發明使一上方隔焰室包括一非導電護單，藉一感應加 熱裝置用於該咼溫區段之金屬帶條，可達成本目的。 基於感應加熱該塔式爐高溫區段中之金屬帶條，該金屬帶條 之溫度將隨電力而線性地上升，對比於預熱區段氣體加熱隔培室 區域中之一指數進程，到達該金屬帶條處理溫度所需之該高溫區 段隔焰室長度，將相較一氣體加熱隔焰室大幅縮短。為此所需之 先決條件係，用於該高溫區段隔焰室之一具充分耐溫性非導電材 料。為此，用於該尚溫區段之隔焰室可較佳地包括一陶瓷護罩， 其係由該感應加熱裝置之感應線圈圍繞。該護罩較佳地形成有一 矩形剖面，以於該金屬帶條與該等感應線圈之間達成可能發生之 最小距離，該距離係於該帶條宽度上呈定值。為達成均勻之該金 屬帶條加熱，該金屬帶條中所感應之電流應均勻地分佈於該帶條 之寬度上。 、 當一陶瓷材料用於該高溫區段之隔焰室時，該陶瓷材料將具 有某一特疋量孔隙率。為避免必須擔憂任何惰性氣體基於該種孔 隙率而擴散通過該高溫區段之隔焰室，該隔焰室之陶瓷護罩可包 201105802 括二外殼，其中該等外殼之間之空腔係填充一密封氣體。當使用 氫作為熱處理該金屬帶條用之一惰性氣體時，圍繞該高溫區段隔 焰至外側上之空間可填充氮，而獲致一氮/氫混合物，作為該二陶 瓷:材料外殼之間空腔中之一密封氣體。 【圖式簡單說明】 作為範例之圖式中係顯示本發明之標的，其中： 圖一係顯示依據本發明之一熱處理金屬帶條用塔式爐概略縱 向剖视圖； 圖二係顯示沿圖一中線π_π之剖視圖；及 圖二係顯示帶條溫度於整個預熱區段及高溫區段隔焰室長度 上之進程。 【實施方式】 用於熱處理一點畫線所指示之一金屬帶條丨之圖示塔式爐包 括一預熱區段2及一高溫區段3，該高溫區段係鄰接於預熱區段2 上方。預熱區段2及高溫區段3係藉一隔熱耐火材料所製成之一 連接件4而互相連結。底部預熱區段2設有一隔焰室5，其係由數 個習知之氣體燃燒器6加熱。 上方高溫區段3亦包括一隔捣室7’然其設有一感應加熱裝置 8。該感應加熱裝置8之數個感應線圈9係圍繞隔焰室7之護罩， 該護罩之刻面係呈矩形’特別如圖二所顯示者。由一非導電材料 製成之隔焰室7護罩係依據圖示具體實施例而配置成二外殼，各 由一陶瓷材料製成之外殼10與11係於其間界定一環形空間，其 中填充一密封氣體。氫可用於隔焰室5及7中，作為一惰性氣體。 於此種情況下’建議以氮填充圍繞著隔焰室7之一機殼12，而可 基於隔焰室7護罩外殼10及11之陶瓷材料孔隙率，獲致—氳與 氮混合物所產生之一密封氣體。 201105802 金屬帶條1於預熱區段2中，大致係經由氣體加熱隔焰室5 而藉輻射加熱《基於熱輻射，預熱區段2中隔焰室5區域内之金 屬帶條1，可獲致一指數溫度曲線13，如可於圖三中看出者。高 恤區段3係鄰近預熱區段2,其中金屬帶條丨係於隔焰室7中之感 應線圈9上方歷經感應加熱^此意味著，可由金屬帶條丨中所^ 應之電流獲致-大致線性溫度曲線14，以高溫區段3末端處達^ 金屬帶條1所需之處理溫度T。 若該塔式爐之高溫區段3係依已知方式配財 =基於以點畫線指示之一指數溫度曲線15，必須於該= 處理溫 至中使用各別《較長隔捣室，以達到既定之金屬帶條1 度 T。 ‘、 【主要元件符號說明】 1 金屬帶條 2 預熱區段 3 高溫區段 4 連接件 5 隔焰室 6 氣體燃燒器 7 隔焰室 8 感應加熱裝置 9 感應線圈 10 外毂 11 外殼 12 機殼 13 指數溫度曲線 14 大致線性溫度曲線 201105802 15 指數溫度曲線201105802 VI. Description of the Invention: [Technical Field] The present invention relates to a tower furnace for heat treatment of metal strips, which comprises two overlapping secret chambers, which are separated from each other and formed into an air-heating type The hot section and an upper adjacent high temperature section. [Prior Art] Metal strips made especially of chrome steel or nickel-chromium steel are designed with or without a flame-to-tasking furnace, in a hydrogen or a mixture of hydrogen and I Ground surface annealing. The advantage of heat-treating the metal strip on the external heating barrier is that a cartridge burner can be used without exhaust gas for the inert gas environment in the interior of the compartment. The tower-free furnace without fuel compartment has the ability to fire her and electrically heat it to achieve higher furnace temperatures. Since the fire lining is slightly ventilated, when the tower furnace is opened, the lining will absorb the surrounding air, and must be flushed by using nitrogen gas before the metal strip can be heat treated under the inert gas. Two milk. After the soaking chamber chamber furnace is turned on, it will not be ready for re-operation within a few days of the necessary flushing phase. In order to achieve the production capacity of the metal strip to be treated, despite the limitation of the insert connected to a muffle chamber, it is known (European Patent No. EP 0 675 208 A1) Connected to a tower furnace preheating section of one of the muffle chambers, the muffle chamber forming a casing separable from the preheating zone, which is then disposed in the preheating section On the shell. Since there is no muffle in the high temperature section, it is believed that a better lower strip exit temperature from one of the muffles would be advantageous for the muffle. However, the high temperature section of the muffleless chamber and its fire lining will require a flushing phase that is significantly longer than that of the muffle furnace after the furnace is turned on, and has a correspondingly increased hydrogen consumption, which is a disadvantage thereof. . To avoid this drawback, it is also known (Austrian Patent No. AT 408 452 A) that the 201105802 high temperature section is also equipped with a gas heated muffle. Based on the limitation imposed on the length of the muffle in the high temperature section, the load of the muffle can be limited by its own weight, which would result in a higher temperature tolerance due to the assurance of lower strength requirements, and This still ensures the final temperature required for the metal strip to be treated. Although the tower furnace has been subdivided into two muffle chambers to limit the length of the muffle chamber in the high temperature section, the length of the high temperature muffle required to reach the final temperature of the metal is still quite long. SUMMARY OF THE INVENTION Therefore, the present invention is based on the object of proposing a tower furnace of the above type for the heat treatment of metal strips, which can shorten the length of the muffle chamber in the high temperature section, and thus reduce the number of treats to be treated The heating time of the metal strip. By means of the invention, an upper muffle chamber comprises a non-conductive protective sheet, and an inductive heating device is used for the metal strip of the warming section for cost purposes. Inductively heating the metal strip in the high temperature section of the tower furnace, the temperature of the metal strip will rise linearly with the electric power, compared to an exponential process in the gas heating compartment area of the preheating section, reaching the The length of the muffle chamber required for the metal strip processing temperature is substantially reduced compared to a gas heated muffle. A prerequisite for this is that one of the muffle chambers of the high temperature section has a sufficiently temperature-resistant non-conductive material. To this end, the muffle chamber for the still temperature section may preferably include a ceramic shroud that is surrounded by the induction coil of the induction heating device. The shield is preferably formed with a rectangular cross-section to achieve a minimum possible distance between the metal strip and the induction coils, the distance being constant over the width of the strip. In order to achieve uniform heating of the metal strip, the current induced in the metal strip should be evenly distributed over the width of the strip. When a ceramic material is used in the muffle of the high temperature section, the ceramic material will have a certain porosity. In order to avoid having to worry about any inert gas diffusing through the muffle chamber of the high temperature section based on the porosity, the ceramic shroud of the muffle can comprise 201105802 including two outer casings, wherein the cavity between the outer casings is filled A sealed gas. When hydrogen is used as the inert gas for heat-treating the metal strip, the space surrounding the flame zone to the outer side of the high temperature section can be filled with nitrogen to obtain a nitrogen/hydrogen mixture as the two ceramics: One of the chambers seals the gas. BRIEF DESCRIPTION OF THE DRAWINGS The subject matter of the present invention is shown in the drawings, wherein: FIG. 1 is a schematic longitudinal cross-sectional view showing a tower furnace for heat-treating a metal strip according to the present invention; A cross-sectional view of a center line π_π; and Fig. 2 shows the progress of the strip temperature over the length of the entire preheating section and the high temperature section muffle. [Embodiment] The illustrated tower furnace for heat treating one of the metal strips indicated by the one-draw line includes a preheating section 2 and a high temperature section 3 adjacent to the preheating section 2 Above. The preheating section 2 and the high temperature section 3 are connected to each other by a connecting member 4 made of a heat insulating refractory material. The bottom preheating section 2 is provided with a muffle 5 which is heated by a number of conventional gas burners 6. The upper high temperature section 3 also includes a compartment 7' which is provided with an induction heating means 8. The plurality of induction coils 9 of the induction heating device 8 surround the shroud of the muffle chamber 7, the facet of the shroud being rectangular in shape, particularly as shown in Fig. 2. The muffle 7 shroud made of a non-conductive material is configured as two outer casings according to the illustrated embodiment, and the outer casings 10 and 11 each made of a ceramic material define an annular space therebetween, wherein one is filled Seal the gas. Hydrogen can be used in the muffle chambers 5 and 7 as an inert gas. In this case, it is recommended to fill a casing 12 surrounding the muffle 7 with nitrogen, and based on the porosity of the ceramic material of the muffle 7 shroud casings 10 and 11, the resulting mixture of niobium and nitrogen is produced. A sealed gas. 201105802 The metal strip 1 is in the preheating section 2, and is heated by the radiant heat of the muffler chamber 5 via the gas. "Based on the heat radiation, the metal strip 1 in the region of the muffle 5 in the preheating section 2 can be An exponential temperature curve 13 is obtained, as can be seen in Figure 3. The high-shirt section 3 is adjacent to the preheating section 2, wherein the metal strip is tied to the induction coil 9 in the muffle 7 and is subjected to induction heating, which means that the current can be obtained from the metal strip - a substantially linear temperature profile 14, at the end of the high temperature section 3, to the desired processing temperature T of the metal strip 1 . If the high temperature section 3 of the tower furnace is matched in a known manner = based on one of the exponential temperature curves indicated by the dotted line, the respective "long compartments must be used in the processing of the temperature to A predetermined metal strip of 1 degree T is achieved. ', [Main component symbol description] 1 Metal strip 2 Preheating section 3 High temperature section 4 Connecting piece 5 Gase chamber 6 Gas burner 7 Gase chamber 8 Induction heating device 9 Induction coil 10 Outer hub 11 Housing 12 Machine Shell 13 exponential temperature curve 14 roughly linear temperature curve 201105802 15 exponential temperature curve

Claims (1)

201105802 七、申請專利範圍： 1· 一種用於金屬帶條熱處理之塔式爐，其包括二重疊隔焰室，該 二者係互相分離’且形成一氣熱式預熱區段及一上方鄰接高溫 區段’其特徵為’該高溫區段(3)用之一上方隔焰室(7)包括一非 導電護罩，其具有該金屬帶條(1)用之一感應加熱裝置(8)。 2. 根據申請專利範圍第丨項所述之塔式爐，其特徵為，用於該高 溫區段(3)之隔焰室(7)包括一陶瓷護罩。 3. 根據申請專利範圍第1項或第2項所述之塔式爐，其特徵為， 該高溫區段(3)之隔焰室(7)護罩具有一矩形剖面。 4. 根，巾請專利範圍第2項或第3項所述之塔式爐，其特徵為， 該高溫區段(3)之隔焰室⑺陶资護罩包括二外殼(1〇，u)且該 外殼(10，11)間之空腔係填充一密封氣體。 μ 8201105802 VII. Patent application scope: 1. A tower furnace for heat treatment of metal strips, comprising two overlapping flame chambers, which are separated from each other' and form an air-heat preheating section and an upper adjacent high temperature The section 'characterized' is that the upper muffle chamber (7) includes a non-conductive shroud having an inductive heating device (8) for the metal strip (1). 2. A tower furnace according to the scope of the patent application, characterized in that the muffle chamber (7) for the high temperature section (3) comprises a ceramic shroud. 3. The tower furnace according to claim 1 or 2, wherein the muffle (7) shroud of the high temperature section (3) has a rectangular cross section. 4. The root furnace, the tower furnace described in the second or third aspect of the patent, characterized in that the muffle chamber (7) of the high temperature section (3) comprises two outer casings (1, u, And the cavity between the outer casings (10, 11) is filled with a sealing gas. μ 8
TW099120562A 2009-07-03 2010-06-24 A tower furnace for heat treatment of a metal strip TW201105802A (en)

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DE102014106907A1 (en) * 2014-05-16 2015-11-19 Robert Bosch Automotive Steering Gmbh Movable induction unit for heat treatment of a workpiece
PL446929A1 (en) * 2023-11-30 2025-06-02 Seco/Warwick Spółka Akcyjna Heat treatment furnace

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JP3356864B2 (en) 1994-03-31 2002-12-16 中外炉工業株式会社 Heating zone of vertical continuous bright annealing furnace for steel strip
AT405055B (en) * 1997-06-10 1999-05-25 Ebner Peter Dipl Ing TOWER STOVES FOR THE HEAT TREATMENT OF METAL STRIPS
SE515593C2 (en) * 1999-03-01 2001-09-03 Avesta Sheffield Ab Apparatus for heating a metal band
AT408452B (en) 2000-06-29 2001-12-27 Ebner Peter Dipl Ing TOWER STOVES FOR THE HEAT TREATMENT OF METAL STRIPS

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