TWI381142B - 用於加熱及／或熱平衡鋼或合金鋼之連續鑄造產物之輥道爐及其於熱條帶精軋機上游之設置 - Google Patents

用於加熱及／或熱平衡鋼或合金鋼之連續鑄造產物之輥道爐及其於熱條帶精軋機上游之設置 Download PDF

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TWI381142B
TWI381142B TW096101369A TW96101369A TWI381142B TW I381142 B TWI381142 B TW I381142B TW 096101369 A TW096101369 A TW 096101369A TW 96101369 A TW96101369 A TW 96101369A TW I381142 B TWI381142 B TW I381142B
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roller
furnace
row
slab
delivery end
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TW200730783A (en
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Frank Benfer
Christoph Klein
Dieter Hofmann
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Sms Siemag Ag
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    • 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
    • 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
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/142—Plants for continuous casting for curved casting
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • 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
    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Description

用於加熱及/或熱平衡鋼或合金鋼之連續鑄造產物之輥道爐及其於熱條帶精軋機上游之設置
本發明有關於一種用於加熱及/或熱平衡特別由鋼或合金鋼等組成之連鑄產物的輥道爐，針對各別爐，該等連鑄產物被以適當長度形式在滾筒上輸進和輸出該爐室，本發明同時有關於其於一熱條帶精軋機上游之設置，該熱條帶除此之外在精軋機列當中被滾壓、冷卻，在一盤捲機中被捲成捲圈。
此類輥道爐非常長，很容易造成熱損，並且，由於長期支撐於滾筒上而產生軋製鐵鱗累積的緣故，這些輥道爐在連鑄產物底面產生壓印痕跡，這些痕跡最終會導致滾壓產物，特別是滾壓條帶，品質的降低。
此類安裝於熱條帶精軋機列上游之輥道爐可例如從DE 44 11 216 A1中得知。此類爐子係由固定爐和步進爐構成，欲加熱工件放置在爐子耐火襯裡上。同時，傾斜凹陷被配置在耐火襯裡上，以實現底部加熱和除銹功能。在此實施例，銹垢被經由該等爐床之間的驅動細縫以及經由銹垢傾卸軸而去除。
在由滾筒所構成的爐道中，滾筒間隙讓銹垢在短暫距離之間更有效的去除，但是沈重的連鑄產物(例如板坯區段)的重量造成殘餘銹垢壓進連鑄材料當中，形成前述表面瑕疵，該表面瑕疵同時存在於上述精製產物當中。安裝滾筒的步進爐可例如從EP 0 361 057 B1中得知。但是，這樣的設計將造成非常具複雜構造的輥道形式，其中，步進輥道裝置係由輸送滾筒所構成，滾筒支撐在爐室外側，透過爐子側壁上開口，滾筒可從步進爐道中間空隙伸進與縮回。這將造成嚴重的熱損以及低熱效率。
本發明以傳統輥道爐之改善目的為基礎，所使用的方法使得其長度被減少，同時，由一連鑄機和一熱條帶精軋機列所構成的一完整系統(例如一CSP/小型的條帶製造設備)之長度縮短被達成，同時改善熱效率以及隨之節約能源。也可能可減少在該連鑄產物上之底側的損壞痕跡之數目。
依據本發明，此目的之達成在於：一延伸於爐子縱長方向之第一滾筒列被安裝在原先所述輥道爐的進給端，其中，所述滾筒所具有之長度對應於連鑄產物的寬度；一平行於該第一滾筒列延伸的第二滾筒列被安裝在該遞送端；以及一具有用於連鑄產物之橫向輸送的緩衝區被安裝在該第一滾筒列和第二滾筒列之間。因此所獲得的效益可被看到：爐子長度縮短及因之整體系統的長度縮短，以及由於此長度縮小而達成的效率改善且該效率改善造成的能源節約。此長度縮小同時導致連鑄產物底面銹垢相關痕跡的減少，使得在隨後之滾壓程序期間的條帶改善品質被達成。
依據一具體實施例，延伸於該爐之縱長方向的第一滾筒列及/或第二滾筒列各別地形成一加熱區。此促使一提升熱效率的改善以及前述的能源節約。如果需要的話，該等板坯可接受更強烈加熱處理。這能夠擴大該鑄造/滾壓系統的生產幅度。
依據另一具體實施例，另一可被選擇性啟動之加熱區及/或一保持區被配置在該緩衝區當中，該另一具體實施例之目的在於改善溫度水平。
依據本發明另一特徵，該等抬升元件可由步進樑構成。
依據本發明另一特徵，此類輥道爐設置用於將液態金屬，特別是液態鋼材，連續鑄造成板坯或所謂薄板坯的系統當中的輥道爐(1)設置，當該等板坯或薄板坯在輥道爐中被加熱及/或熱平衡(以及除銹和切成區段)之後，該等板坯或薄板在在一熱條帶精軋機列中被滾壓成熱條帶、冷卻以及在一盤捲機捲成捲圈可被實現，使得一多坯鑄造系統被安裝有一共同輥道爐或每一鑄坯有一各別的輥道爐，其之特徵為：針對該等後續之共同處理路線，由滾筒平行列所構成的一進給端和遞送端以及一介於其等間之抬升元件構成的緩衝區。所獲得的效益可被看到：整體系統長度縮減及能源節約及因此之熱效率改善和機械性質改良。
依據一具體實施例(第二替代例)，所建議者為：用於一兩鑄坯鑄造系統的一共同輥道爐之遞送端位置係與該隨後處理路線成一直線，使形成具有相同滾筒列之兩進給端和具有一滾筒列之一中央輸出端的鏡反設置。於是可在較短區間內供應該連續鑄造產物區段給該隨後的熱條帶精軋機列。
依據一第三替代例，一特徵為各別獨立的輥道爐的多坯鑄造系統被提供由一功能上連接兩輥道爐的搬動梭，其中，所述搬動梭被緊接著該遞送端安裝以及位在該隨後處理路線的上游。由於這些裝置的安裝，該區段可被從一兩鑄坯鑄造系統的兩鑄造機輸送至隨後處理路線。
本發明同時考慮一種被安裝在一單鑄坯或多鑄坯連鑄系統上游的傳統輥道爐，其功能性可被擴大：除了一具有一進給端及一遞送端以及一被配置於其等間之抬升元件的緩衝區的輥道爐外，可再安裝一縱向平行操作的輥道爐；以及該等輥道爐被直接相鄰另一輥道爐地設置，該另一輥道爐之特徵在於具有一進給端、一平行遞送端和一被配置於其等間的抬升元件的緩衝區以及緊鄰著該隨後的處理路線地設置(第四替代例)。
本發明同時建議：於一小型鑄造滾壓系統(CSP)中的該處理路線由一具有七個滾筒機架的熱條帶精軋機列。
本發明具體實施例將以圖式表示如下。
該輥道爐1(圖1)具有將從板坯或平板坯3(所謂薄板坯)鑄成之連鑄產物2(圖2至圖5)加熱及/或保持及/或熱平衡的功能。針對此目的，液態鋼從一鑄杓4流出，兩鑄杓4被對置地安裝在一鑄杓轉台5上，使得它們可被樞轉至該出鐵位置並經過一具一鑄模6之分配渠道。成形於該鑄模6中的該鑄坯6a被冷卻，然後在一支撐輥壓機架7中進一步被冷卻以及支承。該各別連鑄產物2被在一除銹裝置8中除銹，在一剪切機9中被切成長度為若干公尺的區段10。適合被經由該爐輸送和被滾壓的該等區段10被藉由該等鑄坯尺寸和該隨後滾壓程序所界定。
藉由於該爐1之縱長方向12延伸的第一滾筒列13，該等區段10被在一進給端11(圖1)上輸送。該等滾筒13a之長度以一定容差對應於該連鑄產物2之寬度。
類似該進給端11，一由相同滾筒13a構成的第二滾筒列15同樣被安裝在該遞送端14上。該連鑄產物2以該縱長方向12離開該遞送端14上的該滾筒列15。一由未表示之抬升元件17構成的緩衝區16被成形於該第一滾筒列13和該第二滾筒列15之間。該等抬升元件17確保該連鑄產物2在箭頭方向18的橫向輸送。延伸於縱長方向12之該第一滾筒列13及/或該第二滾筒列12形成為傳統加熱裝置的一加熱區19，諸如類似之瓦斯燃燒器、感應加熱裝置等等。被可選擇地開啟開關的另一加熱區19及/或一保持區可被提供在該緩衝區16中。該等抬升元件17由傳統走進樑17a所構成。
所述之該等輥道爐1中的一者被針對每一鑄坯提供以及被直接相鄰該剪切機9地安裝，其中，該輥道爐之替代配置被以不同具體實施例表示。依據圖4，一搬動梭20被安裝在遞送端14上，以便將一兩鑄坯鑄造系統經由一緊急剪切機21和其它除銹裝置22連接於一包括多滾壓機架的熱條帶精軋機列23。
在被滾壓成薄熱條帶24之後，該金屬條帶在一冷卻區域25中冷卻成一具有對應微結構的鋼條帶，然後在一盤捲機26中盤捲成捲圈27。就此方面而言，於該滾壓程序期間的處理路線28係與根據圖2至圖5之所有具體實施例相同。
依據圖2，參考圖1所述類型之一各別的輥道爐1(依據本發明，即一所謂的步進式輥道爐)被提供給在一多坯鑄造系統29中之每一鑄坯。該等區段10藉由每一輥道爐1被側向地輸入該處理路線28當中(第一替代例)。
在圖3當中，兩鑄坯之橫向輸送在箭頭18指示出之相對方向發生(第二替代例)。
雖然在圖4中兩獨立輥道爐1被提供用於每一鑄坯，但是它們並不與該隨後發生的處理路線28處於同一直線上。這就是為什麼要藉由該搬動梭20將這些區段10輸入該共同處理路線10中的原因(第三替代例)。
圖5表示：一僅於縱向操作的輥道爐30被用於一(左邊)鑄坯，另一方面，一具發明性的輥道爐1被用於另一(右邊)鑄坯。然後，藉由一具發明性的步進輥道爐，該等區段10被可收集地輸入該隨後發生之處理路線28(第四替代例)。
1．．．輥道爐
2．．．連鑄產物
3．．．板坯、扁薄板坯
4．．．鑄杓
5．．．鑄杓轉台
6．．．鑄模
6a．．．鑄坯
7．．．備用滾壓機架
8．．．除銹裝置
9．．．剪切機
10．．．區段
11．．．進給端
12．．．縱長方向
13．．．第一滾筒列
13a．．．滾筒
14．．．遞送端
15．．．第二滾筒列
16．．．緩衝區
17．．．抬升元件
17a．．．步進樑
18．．．箭頭
19．．．加熱區
20．．．搬動梭
21．．．緊急剪切機
22．．．除銹裝置
23．．．熱條帶精軋機
24．．．熱條帶
25．．．冷卻區域
26．．．盤捲機
27．．．捲圈
28．．．處理路線
29．．．多坯鑄造系統
30．．．縱長方向操作之輥道爐
圖1係依據本發明輥道爐水平投影圖。
圖2係具有輥道爐第一替代設置完整系統立體側視圖。
圖3係具有輥道爐第二替代設置完整系統立體側視圖。
圖4係具有輥道爐第三替代設置完整系統立體側視圖。
圖5係具有輥道爐第四替代設置完整系統立體側視圖。
1．．．輥道爐
11．．．給進端
12．．．縱長方向
13．．．第一滾筒列
13a．．．滾筒
14．．．輸出端
15．．．第二滾筒列
16．．．緩衝區
17．．．抬升元件
17a．．．步進樑
18．．．箭頭
19．．．加熱區

Claims (7)

  1. 一種用於加熱及/或熱平衡特別是由鋼或合金鋼構成之連鑄產物(2)的輥道爐(1)，針對該各別的爐，該等連鑄產物(2)可被以適當區段(10)之形式在滾筒(13a)上輸進和輸出該爐室，一延伸於該爐(1)之縱長方向(12)的第一滾筒列(13)被安裝在該進給端(11)上，其中，所述滾筒(13a)之長度對應於該連鑄產物(2)的寬度；一平行於該第一滾筒列(13)延伸的第二滾筒列(15)被安裝在該遞送端(14)；以及一被配置在該第一滾筒列和該第二滾筒列(13、15)之間的緩衝區(16)，其具有用於該等連鑄產物(2)之橫向輸送的抬升元件(17)；其特徵在於，延伸於該爐(1)之縱長方向(12)的第一滾筒列(13)及/或第二滾筒列(15)形成或各別形成一加熱區(19)。
  2. 如申請專利範圍第1項之輥道爐，其特徵在於：另一可選擇性啟動的加熱區(19)及/或一保持區被配置在該緩衝區(16)當中。
  3. 如申請專利範圍第1項或第2項之輥道爐，其特徵在於：該等抬升元件(17)可由步進樑(17a)構成。
  4. 一種將申請專利範圍第1至3項中任一項所述之輥道爐(1)使用於連續鑄造液態金屬以形成板坯或所謂薄板坯(3)的方法，在該等板坯或薄板坯(3)於該輥道爐(1)中被加熱及/或熱平衡之後，該等板坯或薄板坯(3)在一熱條帶精軋機列(23)內被滾壓成熱條帶、冷卻以及在一盤捲機(26)中被捲成捲圈(27)， 其特徵在於：一多坯鑄造系統(29)被提供有一共同的輥道爐(1)或每一鑄坯有一輥道爐(1)，其之各別特徵為針對該後續的共同處理路線(28)，由滾筒列(13、15)所構成的一進給端(11)和一平行遞送端(14)以及一介於其等間的抬升元件(17)的緩衝區(16)。
  5. 如申請專利範圍第4項之方法，其特徵在於：用於一兩鑄坯鑄造系統(29)的一共同輥道爐(1)之遞送端(14)位置係與該隨後處理路線(28)成一直線，使得形成具有相同滾筒列(13、13)之兩進給端(11)和具有一滾筒列(15)之一中央遞送端(14)的一鏡反設置。
  6. 如申請專利範圍第4項之方法，其特徵在於：一具有各別獨立輥道爐(1)的多坯鑄造系統(29)之特徵為一功能上連接兩輥道爐(1、1)的搬動梭(20)，其中，所述搬動梭(20)被緊接著該遞送端(14)安裝以及位於該後續的處理路線(28)上游。
  7. 如申請專利範圍第4項之方法，其特徵在於：除了一具有一進給端和一遞送端(11、14)以及一被配置於其等間之抬升元件(17)之緩衝區(16)的輥道爐(1)之外，可再安裝一平行縱向(12)操作之輥道爐(30)，以及該等輥道爐(1、30)直接相鄰於另一輥道爐(1)設置，該另一輥道爐(1)之特徵在於具有一進給端(11)、一平行遞送端(14)和一被配置於其等間之抬升元件(17)之緩衝區(18)以及被緊鄰著該隨後發生的處理路線(28)。
TW096101369A 2006-02-08 2007-01-15 用於加熱及／或熱平衡鋼或合金鋼之連續鑄造產物之輥道爐及其於熱條帶精軋機上游之設置 TWI381142B (zh)

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