TWI412410B - Method for hot rolling and for heat treatment of a strip of steel - Google Patents
Method for hot rolling and for heat treatment of a strip of steel Download PDFInfo
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- TWI412410B TWI412410B TW097120680A TW97120680A TWI412410B TW I412410 B TWI412410 B TW I412410B TW 097120680 A TW097120680 A TW 097120680A TW 97120680 A TW97120680 A TW 97120680A TW I412410 B TWI412410 B TW I412410B
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- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
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- 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
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- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0252—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with application of tension
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- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0426—Hot rolling
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- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0452—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment with application of tension
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling
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- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
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- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Metal Rolling (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
Description
本發明是關於一種用於熱輥軋及熱處理鋼帶的方法。This invention relates to a method for hot rolling and heat treating steel strips.
鋼製組件的硬化及後續的回火是很常見的操作。藉此可以特別調整材料的強度與韌性的所需組合。理論上，此項技術也在鋼片廠中被使用於製造高強度的鋼片。其係描述於專利案EP 1 764 423 A1之中。在此情形中，在加熱板片且在多次反向通過中而在沉重的板材座上輥軋出最終厚度之後，鋼片以高速被冷卻至室溫，亦即，例如實施硬化程序。接著，進行回火程序，亦即重新加熱鋼帶到達例如600℃，藉著進行再度的冷卻。因此，可以在鋼片架中以小批量的大小靈活地製造出具有不同特性的鋼片。Hardening of steel components and subsequent tempering are common operations. Thereby, the desired combination of strength and toughness of the material can be specially adjusted. In theory, this technology is also used in steel sheet mills to make high-strength steel sheets. It is described in the patent EP 1 764 423 A1. In this case, after heating the sheet and rolling the final thickness on the heavy sheet holder in a plurality of reverse passes, the steel sheet is cooled to room temperature at a high speed, that is, for example, a hardening process is performed. Next, a tempering procedure is performed, i.e., the steel strip is reheated to, for example, 600 ° C, by re-cooling. Therefore, it is possible to flexibly manufacture steel sheets having different characteristics in a small batch size in a steel sheet frame.
由於在鋼片製造部門中，在鋼帶製造中對於具有相當高強度的鋼材類型之需求，亦即，對於所謂的高強度及超高強度鋼的需求，也不斷地增加。這些材料尤其適用於馬達車輛、吊車、容器與管件上。Due to the demand for steel types of relatively high strength in the manufacture of steel strips in the steel sheet manufacturing sector, that is, the demand for so-called high strength and ultra high strength steels is also increasing. These materials are especially suitable for use in motor vehicles, cranes, containers and fittings.
因此，本發明之目的是要提供一種方法，藉由此方法，能夠更加經濟地在鋼帶廠中製造出具有足夠韌性的高強度與超高強度鋼帶。特別是，藉由此方法而有利地製造出QT鋼材是可能的。Accordingly, it is an object of the present invention to provide a method by which a high strength and ultra high strength steel strip having sufficient toughness can be produced more economically in a steel strip plant. In particular, it is possible to advantageously manufacture QT steel by this method.
藉由本發明方法之此目的之解決方案的特徵是在於該方法包含以下步驟： a)加熱要被輥軋的扁塊；b)將該扁塊輥軋成所需的鋼帶厚度；c)冷卻鋼帶，其中，在冷卻之後，該鋼帶具有比周圍溫度更高的溫度；d)將該鋼帶捲繞成鋼帶捲；e)從該鋼帶捲展開該鋼帶；f)加熱該鋼帶；g)冷卻該鋼帶，以及h)移除該鋼帶，其中，在根據步驟f)的加熱之前，鋼帶具有比周圍溫度更高的溫度。A solution to this object of the method of the invention is characterized in that the method comprises the following steps: a) heating the flat block to be rolled; b) rolling the flat block into a desired thickness of the steel strip; c) cooling the steel strip, wherein after cooling, the steel strip has a higher temperature than the ambient temperature d) winding the steel strip into a steel strip roll; e) unrolling the steel strip from the steel strip roll; f) heating the steel strip; g) cooling the steel strip, and h) removing the steel strip, wherein The steel strip has a higher temperature than the ambient temperature before the heating according to step f).
在本發明的較佳實例中，當實施步驟d)時，該鋼帶捲係位於一個捲繞座上，其中，當實施步驟e)時，該鋼帶捲較佳地係位於在空間上遠離該捲繞座的一個展開座上，且其中在步驟d)與e)之間，可能透過一個絕熱鋼帶捲儲存器，以一種絕熱方式將該鋼帶捲從捲繞座被運送至展開座。In a preferred embodiment of the invention, when step d) is carried out, the strip of steel strip is placed on a winding seat, wherein when step e) is carried out, the strip of steel strip is preferably located at a distance from the space An unfolding seat of the winding seat, and wherein between steps d) and e), the steel coil can be transported from the winding seat to the unfolding seat in an adiabatic manner through a heat insulating steel coil storage .
步驟e)可以直接在步驟d)之後接續。Step e) can be continued directly after step d).
在冷卻期間，或在根據步驟c)及/或根據步驟g)的冷卻之後，鋼帶可以接受一矯直程序。它也可以在根據步驟e)的展開與根據步驟f)的加熱之間接受一矯直程序。它也可以在根據步驟f)的加熱與根據步驟h)的移除之間接受一矯直程序。可以藉由將鋼帶在基部附近加以撓曲、撓曲、驅動或其他滾子來實施該矯直程序。The steel strip can undergo a straightening procedure during cooling, or after cooling according to step c) and/or according to step g). It can also accept a straightening procedure between the unfolding according to step e) and the heating according to step f). It can also accept a straightening procedure between the heating according to step f) and the removal according to step h). The straightening procedure can be carried out by flexing, flexing, driving or other rollers near the base.
根據本發明的特殊實例，此矯直程序通常是藉由滾子 矯直機器或螺旋壓下鋼帶撓曲滾子、或是根據本發明在所謂的整面框架(skin－pass frame)上實施。According to a particular example of the invention, the straightening procedure is usually by means of a roller The straightening machine or the spirally depressed steel strip flexing roller or according to the invention is implemented on a so-called skin-pass frame.
在根據上述步驟f)的加熱期間，鋼帶亦可以接受矯直程序。During the heating according to step f) above, the steel strip can also undergo a straightening procedure.
根據步驟c)的鋼帶冷卻可以包含一層流冷卻及下游加強性冷卻。根據步驟g)的冷卻也可以包含一個層流冷卻或替代的或額外的空氣冷卻。The strip cooling according to step c) may comprise a layer of stream cooling and downstream enhanced cooling. The cooling according to step g) may also comprise a laminar cooling or an alternative or additional air cooling.
至少部分的冷卻裝置可以被建構成作用於鋼帶整個寬度上之區域中的區域冷卻。At least a portion of the cooling device can be constructed to cool the region that acts in the region of the entire width of the steel strip.
也可以藉由高壓棒實施鋼帶的冷卻，而使得同時清潔及/或除銹(descaling)鋼帶是可能的。It is also possible to carry out the cooling of the steel strip by means of a high-pressure rod, so that it is possible to simultaneously clean and/or descaling the steel strip.
根據步驟f)的鋼帶加熱可以包含感應式加熱。或者，可以實現鋼帶的直接火焰衝擊(direct flame impingement)。在後者的情形中，較佳的是可藉由含有至少75%氧氣、較佳地含幾乎純氧的噴射氣體而實施鋼帶的直接火焰衝擊，在此噴射氣體中混合有氣態或液態燃料。The strip heating according to step f) may comprise inductive heating. Alternatively, a direct flame impingement of the steel strip can be achieved. In the latter case, it is preferred that the direct flame impact of the steel strip can be effected by a jet gas containing at least 75% oxygen, preferably almost pure oxygen, in which the gaseous or liquid fuel is mixed.
另一個發展結果提出鋼帶的感應式加熱係發生於惰氣(保護氣體)中。Another development has suggested that the inductive heating of the steel strip occurs in the inert gas (protective gas).
根據步驟h)的鋼帶移除可以包含捲繞該鋼帶。根據申請專利範圍第1項的步驟h)之鋼帶移除也可以包含推離鋼帶的板狀切割部位。The strip removal according to step h) may comprise winding the strip. The steel strip removal according to step h) of claim 1 of the patent application may also comprise a plate-like cutting site that is pushed away from the steel strip.
在根據步驟c)的冷卻之前，鋼帶較佳地具有至少750℃的溫度。The steel strip preferably has a temperature of at least 750 ° C prior to cooling according to step c).
在根據步驟c)的冷卻之後及在根據步驟d)的捲繞之 前，鋼帶較佳地具有至少25℃且最多400℃的溫度，較佳地是介於100℃與300℃之間。After cooling according to step c) and after winding according to step d) Preferably, the steel strip preferably has a temperature of at least 25 ° C and at most 400 ° C, preferably between 100 ° C and 300 ° C.
另一個發展結果提出在根據步驟f)的加熱之後，鋼帶較佳地具有至少400℃的溫度，較佳地介於400℃與700℃之間。同時，在根據步驟g)的冷卻及在根據步驟h)的移除之前，鋼帶較佳地可以具有最多200℃的溫度，較佳地介於25℃與200℃之間。A further development proposes that after heating according to step f), the steel strip preferably has a temperature of at least 400 ° C, preferably between 400 ° C and 700 ° C. At the same time, the steel strip preferably has a temperature of at most 200 ° C, preferably between 25 ° C and 200 ° C, before the cooling according to step g) and before the removal according to step h).
鋼帶的加熱可以在鋼帶寬度上以不同的強度發生。The heating of the steel strip can occur at different strengths over the width of the steel strip.
最後，可以顛倒的態樣實施步驟e)至g)，為此目的，使用一個位於根據步驟g)的冷卻之後的捲繞座。Finally, steps e) to g) can be carried out in an inverted manner, for which purpose a winding seat after cooling according to step g) is used.
更可以在鋼帶處理設備中的至少兩個位置處測量鋼帶的平坦度及/或溫度(後者較佳地是藉由溫度掃描器而實施)，藉此監控鋼帶的品質。It is also possible to measure the flatness and/or temperature of the steel strip at at least two locations in the strip processing apparatus (the latter is preferably implemented by a temperature scanner) whereby the quality of the strip is monitored.
可以藉由一個程序模組控制或調節鋼帶通過鋼帶處理設備、特別是與區域有關的鋼帶加熱、矯直滾子的調整、及/或特別是與區域有關的冷卻的行進速度。The speed of travel of the steel strip through the strip processing device, in particular the zone-dependent strip heating, the straightening of the rollers, and/or the cooling associated with the zone, can be controlled or adjusted by means of a program module.
在通過鋼帶處理設備期間，鋼帶可藉由驅動器在至少一些區段上被維持在預定好的鋼帶張力下。這可以特別應用於在加強冷卻區段的區域內。During the passage of the steel strip processing equipment, the steel strip can be maintained at a predetermined good strip tension on at least some of the sections by the drive. This can be used in particular in the area of the reinforced cooling section.
為了確保鋼帶在驅動器中對中地行進，在滾子矯直單元或者在加強冷卻區段中，一個鋼帶橫向導引件較佳地位於其前方。In order to ensure that the steel strip travels centeringly in the drive, in the roller straightening unit or in the reinforced cooling section, a strip transverse guide is preferably located in front of it.
用於熱輥軋及熱處理鋼帶的方法之另一實例包含以下步驟： a)加熱要被輥軋的扁塊；b)將該扁塊輥軋成所需的鋼帶厚度；c)冷卻該鋼帶，其中，在冷卻之後，鋼帶具有比周圍溫度更高的溫度；d)將該鋼帶捲繞於第一盤捲器上；e)將介於該第一盤捲器與一第二盤捲器之間的鋼帶倒轉，其中該鋼帶在該等盤捲器之間受到加熱；其中，在根據步驟e)的加熱之前，鋼帶具有比周圍溫度更高的溫度。Another example of a method for hot rolling and heat treating a steel strip includes the following steps: a) heating the flat block to be rolled; b) rolling the flat block into a desired thickness of the steel strip; c) cooling the steel strip, wherein after cooling, the steel strip has a higher temperature than the ambient temperature d) winding the steel strip on the first coiler; e) inverting the steel strip between the first coiler and a second coiler, wherein the steel strip is in the tray The rolls are heated; wherein the steel strip has a higher temperature than the ambient temperature prior to the heating according to step e).
此方法也可以與上述的實例組合。This method can also be combined with the above examples.
在不需要回火的材料之狀況中，亦即在步驟d)之後強度與韌度特性已經符合要求，可以僅單獨使用程序步驟a)至d)。In the case of materials which do not require tempering, that is to say after the step d) the strength and toughness characteristics have been met, the procedure steps a) to d) can be used alone.
以下的進一步發展結果經證實是成功的。The following further development results have proven to be successful.
在鋼帶冷卻之前與之後，可藉由驅動器而建立起鋼帶的張力。The tension of the steel strip can be established by the driver before and after the cooling of the steel strip.
可以藉由橫向引導的作用將鋼帶橫向地導引至其縱軸上。此橫向引導作用較佳地發生於鋼帶冷卻的區域中，特別是鋼帶的層流冷卻區域中。The steel strip can be guided laterally to its longitudinal axis by the action of lateral guidance. This lateral guiding action preferably takes place in the zone where the steel strip is cooled, in particular in the laminar cooling zone of the steel strip.
鋼帶的橫向引導作用更可以在驅動器之前發生，且可以在通過鋼帶頭部之後打開，而在鋼帶尾端處再次關閉，用於引導的作用。The lateral guiding action of the steel strip can occur more before the drive and can be opened after passing through the head of the steel strip and closed again at the trailing end of the steel strip for guiding purposes.
可以藉由低溫的輻射高溫計來測量鋼帶溫度。較佳地，可以在冷卻及/或加熱裝置之前、之內及/或之後實施鋼 帶溫度的測量。The temperature of the steel strip can be measured by a low temperature radiant pyrometer. Preferably, the steel can be applied before, during and/or after the cooling and/or heating device With temperature measurement.
熱寬鋼帶軋鋼機的製造範圍很明顯地與重鋼板軋鋼機有所不同。現在存在有過去數十年間所新近研發出的數種高強度與超鋼強度類型的鋼，其特性可以經由特殊的輥軋及/或冷卻策略加以調整。用於此目的之一種適合方法是在輥軋之後以高冷卻速率對鋼帶進行淬火，接著將鋼帶再度加熱至相位變換溫度以上的溫度。The manufacturing range of the hot wide strip mill is clearly different from that of the heavy plate mill. There are several types of high strength and ultra steel strength types newly developed in the past decades, the characteristics of which can be adjusted by special rolling and / or cooling strategies. One suitable method for this purpose is to quench the steel strip at a high cooling rate after rolling, and then reheat the steel strip to a temperature above the phase change temperature.
能夠以此方式製造的標準QT鋼(Q表示經淬火，T表示經回火)已經在重鋼板架上製造出來。然而，它們也可以在熱寬鋼帶軋鋼機上實質上更加經濟地被製造出來。Standard QT steels (Q for quenching, T for tempering) that can be made in this way have been fabricated on heavy steel frames. However, they can also be manufactured substantially more economically on a hot wide strip mill.
而且，可以更加可靠地在熱鋼帶軋鋼機上製造出具有較低溫度與厚度公差以及鋼帶平坦度之較薄、超高強度之鋼帶。因此，可以適當且有利地將一部分的製造從重鋼板架轉移至鋼帶軋鋼機。Moreover, it is possible to more reliably produce a thinner, ultra-high-strength steel strip having a lower temperature and thickness tolerance and a flatness of the steel strip on the hot strip mill. Therefore, it is possible to appropriately and advantageously transfer a part of the manufacturing from the heavy steel frame to the steel strip rolling mill.
此外，已經有許多新類型的鋼無法在重鋼板架上製造。在此所提出的方法特別適用於多相位鋼材的群組。藉由顯著地擴大溫度－時間輪廓的範圍，且特別是藉由中斷冷卻作用且暫時再次增加溫度之可能性，可以製造出具有目前無法想像得到的幾乎任何相位組合的成分。此外，可以產生沉澱程序，因而特別地引進是現代類型的鋼材之一項特徵的第二相位。In addition, many new types of steel have not been manufactured on heavy steel frames. The method proposed here is particularly suitable for groups of multi-phase steels. By significantly expanding the range of temperature-time profiles, and in particular by interrupting the cooling effect and temporarily increasing the temperature again, it is possible to produce components with virtually any phase combination that is currently unimaginable. Furthermore, a precipitation procedure can be produced, thus in particular introducing a second phase which is a feature of modern types of steel.
此外，可以藉由所提及的方法來調整在傳統製造中對於於較高合金成分所需的特性。Furthermore, the properties required for higher alloy compositions in conventional manufacturing can be adjusted by the methods mentioned.
將一方面輥軋及冷卻程序及在另一方面回火程序加以 分開安排的優點是此方法的靈活性(不需要混合的輥軋)，可以進行鋼帶的溫度時間輪廓及本身的鋼帶捲或來自其他設備的鋼帶捲的靈活調整。也可以根據鋼帶所需的用途或可捲繞性(coilability)切出多個鋼帶捲或板件。板件較佳的是在較高溫度下，亦即在回火溫度下，被切割。Rolling and cooling procedures on the one hand and tempering procedures on the other hand The advantage of the separate arrangement is the flexibility of the method (no need for mixed rolling), the temperature profile of the steel strip and the flexibility of the steel strip roll itself or the coils from other equipment. It is also possible to cut a plurality of steel strip rolls or sheets depending on the desired use or the coilability of the steel strip. The plate member is preferably cut at a higher temperature, i.e., at a tempering temperature.
輥軋與冷卻程序以及回火程序的偶合配置的優點在於能夠特別節省大量的能源，且在難以盤捲與結捆包的鋼帶捲之情況下，可以使用具有直接運送的特殊捲盤器來避免所謂的手錶彈簧(watch－spring)的問題。而且，在直接進一步處理的情況中可以達成快速的進一步處理或鋼帶的運輸。最後，必須提到的是，在所提到的配置中，更可能可以影響鋼帶的微結構。The coupling arrangement of the rolling and cooling process and the tempering procedure has the advantage of being able to save a considerable amount of energy, and in the case of difficult coiling and baling of steel strip rolls, special reels with direct transport can be used. Avoid the so-called watch-spring problem. Moreover, rapid further processing or transportation of the steel strip can be achieved in the case of direct further processing. Finally, it must be mentioned that in the mentioned configuration it is more likely that the microstructure of the steel strip can be influenced.
圖1顯示一熱鋼帶軋鋼機，其中鋼帶1在一開始是在第一程序步驟(以I表示)中進行加工，且然後在第二程序步驟(以II表示)中進行加工。Figure 1 shows a hot strip mill in which the strip 1 is initially processed in a first process step (denoted by I) and then processed in a second process step (denoted by II).
在第一程序階段中(亦即，輥軋及冷卻程序中)，首先，一個扁塊(slab)在多架式軋鋼機中被輥軋。在軋鋼機中，僅顯示最後三個精軋座7，其中已經輥軋好具有中間厚度的鋼帶6。然後，可以測量鋼帶中的溫度分佈或平坦度。鋼帶1接著在運送方向F通過而進入一個鋼帶冷卻系統8，此冷卻系統被分成一個具有所謂邊緣遮蔽的加強層流冷卻系統9及一個層流鋼帶冷卻系統10。運送速度可以為例如6m/s。冷卻過的鋼帶1接著進入一個加強冷卻系統11，其中，根 據本發明的較佳實例，整合有一個矯直機器(straightening machine)及驅動器(圖4顯示其細節)。驅動器可以被設置於加強冷卻系統11的前方及後方。In the first stage of the process (i.e., in the rolling and cooling process), first, a slab is rolled in a multi-stand rolling mill. In the rolling mill, only the last three finishing stands 7 are shown, in which the steel strip 6 having an intermediate thickness has been rolled. Then, the temperature distribution or flatness in the steel strip can be measured. The steel strip 1 then passes in the transport direction F into a strip cooling system 8, which is divided into a reinforced laminar flow cooling system 9 with so-called edge shading and a laminar strip cooling system 10. The transport speed can be, for example, 6 m/s. The cooled steel strip 1 then enters a reinforced cooling system 11 wherein the root According to a preferred embodiment of the invention, a straightening machine and a drive (shown in Figure 4) are integrated. The driver can be disposed in front of and behind the reinforced cooling system 11.
加強冷卻系統11之後，可以接著測量另一次溫度分佈以及鋼帶平坦度。較佳地，在這些低溫度下可使用一個低溫輻射高溫計。也可以在兩個擠壓或驅動滾子之間，在加強冷卻系統內側實施溫度測量，用於調節溫度冷卻劑。After the cooling system 11 is reinforced, another temperature distribution and strip flatness can be measured. Preferably, a low temperature radiant pyrometer can be used at these low temperatures. It is also possible to carry out a temperature measurement between the two squeeze or drive rollers inside the reinforced cooling system for regulating the temperature coolant.
然後，鋼帶1藉由盤捲器12或13而在捲繞座3中被捲繞。Then, the steel strip 1 is wound in the winding seat 3 by the coiler 12 or 13.
然後，鋼帶捲2進入第二程序階段，亦即回火程序。The strip coil 2 then enters the second stage of the process, namely the tempering process.
此處，鋼帶捲2在一開始在一個展開座4中被展開，且然後被饋送至一個矯直機器14(此矯直機可位於後續爐子的前方及/或後方)。在一區域15中，在鋼帶的長度與寬度上已經發生溫度均等化之後，鋼帶1進入一爐子16。可能且有利的是將一個矯直機器整合到此爐子16內，類似於冷卻之情形(詳細情形顯示於圖5中)。此處，鋼帶1可以用連續或倒轉的模式進行加熱。較佳地，可使用氧氣燃料爐或感應爐，加熱時間係介於10秒與600秒之間。Here, the steel strip roll 2 is initially unfolded in a deployment seat 4 and then fed to a straightening machine 14 (this straightening machine can be located in front of and/or behind the subsequent furnace). In a zone 15, the steel strip 1 enters a furnace 16 after the temperature has been equalized over the length and width of the steel strip. It may be advantageous and advantageous to integrate a straightening machine into the furnace 16, similar to the case of cooling (details are shown in Figure 5). Here, the steel strip 1 can be heated in a continuous or inverted mode. Preferably, an oxygen fuel furnace or an induction furnace can be used with a heating time between 10 seconds and 600 seconds.
接著是修剪用剪切機17或18。然後，鋼帶1進入一個層流鋼帶冷卻系統內，或進入一空氣冷卻系統19中。繼之以矯直機器20。而且，如圖1所示，接著在捲繞座5中的是一個板件推動單元21或盤捲器22。This is followed by a shearing machine 17 or 18. The steel strip 1 then enters a laminar steel strip cooling system or enters an air cooling system 19. This is followed by straightening the machine 20. Moreover, as shown in Fig. 1, then in the winding seat 5 is a plate pushing unit 21 or a coiler 22.
此處也可以配置一個整面座而不是矯直機器14或20。It is also possible here to configure a full-face seat instead of straightening the machine 14 or 20.
也可以導入來自其他熱鋼帶軋鋼機的鋼帶捲而不是展 開座4。It is also possible to import steel coils from other hot strip mills instead of exhibiting Open the seat 4.
相反的，可以在圖2中看出兩個程序階段I與II的直接連接(此設備並未被顯示成完全組裝好)。熱寬鋼帶軋鋼機(精軋鋼機7)的最後架座、鋼帶冷卻系統8、及第一程序階段的盤捲器12與13同樣地顯示於圖中。設有最後一個盤捲器23用於捲繞具有較高強度的鋼帶。在此情形中，可以有利地包含一個特別的盤捲器，用以簡單地捲繞高強度鋼。在此情形中，盤捲器23是所謂的搬運盤捲器。此處鋼帶捲並不需要被結合至該盤捲器。可樞轉的夾輪(pinch roll)在轉換至展開位置期間將鋼帶在張力下保持住。因此，捲繞步驟之後直接以在回火線路(第二程序階段)中的另一程序接續。Conversely, a direct connection between the two program phases I and II can be seen in Figure 2 (this device is not shown as fully assembled). The final pedestal of the hot wide strip mill (finishing mill 7), the strip cooling system 8, and the coilers 12 and 13 of the first stage are shown in the same figure. A final coiler 23 is provided for winding a steel strip having a higher strength. In this case, a special coiler can advantageously be included for simply winding high strength steel. In this case, the reel 23 is a so-called carrying reel. Here the steel strip roll does not need to be bonded to the coiler. The pivotable pinch roll holds the steel strip under tension during the transition to the deployed position. Therefore, the winding step is followed directly by another program in the tempering line (second program stage).
此進一步運送也同樣發生於根據圖1的解決方案。This further transport also takes place in the solution according to FIG.
此處，特別的優點是能夠節省具有較高捲繞溫度的鋼帶之能量，及能夠將鋼帶捲從第一程序階段快速地進一步運送至第二程序階段。因此，鋼帶1在爐子16中加熱之前，已經具有超過周圍溫度T0 的溫度。Here, a particular advantage is that the energy of the steel strip with a higher winding temperature can be saved and the steel strip can be quickly transported further from the first program stage to the second program stage. Therefore, the steel strip 1 already has a temperature exceeding the ambient temperature T 0 before being heated in the furnace 16.
此外，對於特殊鋼帶來說，也可以倒轉兩個捲盤機23與22之間的鋼帶，以便能夠使鋼帶具有所需的溫度輪廓或處理。Furthermore, for special steel strips, it is also possible to reverse the steel strip between the two reel machines 23 and 22 in order to be able to impart the desired temperature profile or treatment to the steel strip.
較佳地，在較短鋼帶及/或具有足夠尺寸的組件間隔之情形中，可以提供將鋼帶1從第一程序階段直接進一步運送到第二程序階段，而不需要鋼帶1的中間捲繞及/或後續從盤捲器22倒轉到盤捲器23。因此，在此情形中，並未使 用盤捲器23，但是在鋼帶尾端從輥軋機跑出之後，係直接以低速、或在一開始以高速然後較低的速度實施回火程序。Preferably, in the case of shorter steel strips and/or component spacings of sufficient size, it may be provided to transport the steel strip 1 directly from the first program stage to the second program stage without the need for the middle of the steel strip 1 Winding and/or subsequent reversal from the coiler 22 to the coiler 23. Therefore, in this case, it has not been made The coiler 23 is used, but after the tail end of the steel strip is run out of the rolling mill, the tempering procedure is carried out directly at a low speed, or at a high speed and then at a low speed.
或者，此種操作態樣可以被應用於鋼帶上，而與其厚度及速度無關。因此，在一開始並未使用盤捲器23，且也並未運作爐子。鋼帶被捲繞於盤捲器22上，然後，在盤捲器22與23之間倒轉地實施回火程序。Alternatively, such an operational aspect can be applied to the steel strip regardless of its thickness and speed. Therefore, the coiler 23 was not used at the beginning, and the furnace was not operated. The steel strip is wound around the reel 22, and then a tempering process is carried out between the reels 22 and 23 in reverse.
鋼帶1沿著軋鋼機的較佳溫度輪廓係對應於圖2而顯示於圖3中。在此生產線終點處的冷卻方式較佳地為水冷式或氣冷式。The preferred temperature profile of the steel strip 1 along the rolling mill is shown in Figure 3 corresponding to Figure 2. The cooling at the end of the line is preferably water cooled or air cooled.
然而，可以藉由高壓光束而實現冷卻作用。可以藉此同時實施鋼帶表面的清潔或除銹。However, the cooling effect can be achieved by a high voltage beam. This can be used to simultaneously clean or derust the surface of the steel strip.
輥軋廠的生產品質通常比回火程序更高，這是因為鋼帶的輥軋速度大於回火速度的緣故。因此，一種所謂的混合輥軋操作也有可能以最佳的方式運用軋鋼機。此意謂著許多鋼帶係捲繞於盤捲器12與13上，同時在回火生產線上係發生較高強度的鋼帶之進一步加工處理。The production quality of a rolling mill is usually higher than that of a tempering procedure because the rolling speed of the steel strip is greater than the tempering speed. Therefore, a so-called hybrid rolling operation also makes it possible to apply the rolling mill in an optimal manner. This means that many steel strips are wound on the coilers 12 and 13, and further processing of the higher strength steel strip occurs on the tempering line.
因此，根據本發明，鋼帶的製造被進一步實質上分成兩個程序階段，稍後將藉由一個實施例進一步說明其具有另外的選擇性步驟。Thus, in accordance with the present invention, the manufacture of the steel strip is further divided substantially into two program stages, which will be further illustrated by an embodiment which will have additional optional steps.
第一程序階段：－加熱扁塊(厚或薄扁塊)且接著在多架座式熱寬鋼帶軋鋼機中進行輥軋；－在輸送滾子台上加強冷卻該鋼帶；－通過一矯直機器； －將該鋼帶捲繞成一鋼帶捲。The first program stage: - heating the flat block (thick or thin flat block) and then rolling in a multi-seat hot wide steel strip rolling mill; - reinforced cooling of the steel strip on the transport roller table; Straightening machine; - Winding the steel strip into a steel strip roll.
為了增進高強度鋼帶的平坦度，在傳統的精軋機組之前加熱鋼帶邊緣、在第一冷卻區段單元中進行邊緣遮蔽以及一個矯直機器是很有利的。In order to improve the flatness of the high-strength steel strip, it is advantageous to heat the edges of the steel strip before the conventional finishing train, perform edge shading in the first cooling section unit, and a straightening machine.
在較高的捲繞溫度下，快速地將鋼帶捲運送至後續的第二程序階段有利於在回火期間節省加熱能源。鋼帶捲因此可以在一個絕熱罩下被運送，以減少溫度損耗且確保更加均勻的材料特性。At higher winding temperatures, the rapid transport of the steel coil to the subsequent second stage of the process facilitates the saving of heating energy during tempering. The coils can therefore be transported under a heat shield to reduce temperature loss and ensure more uniform material properties.
第二程序階段：－展開鋼帶捲；－假如出現平坦度不足的話，則選擇性地將鋼帶在一矯直機中進行矯直；－在真正回火處理之前，藉由區域冷卻或加熱，選擇性地均等化鋼帶溫度，用於使得鋼帶溫度在鋼帶的長度與寬度上很均勻；－回火鋼帶，亦即藉由感應加熱連續地重新加熱，或者在氣體加熱的連續爐內積極有利地連續重新加熱(例如：使用所謂DFI法之氧氣燃料爐)。The second program phase: - unrolling the steel strip roll; - if the flatness is insufficient, the steel strip is selectively straightened in a straightening machine; - by area cooling or heating before the true tempering treatment , selectively equalizing the temperature of the steel strip for making the temperature of the steel strip uniform over the length and width of the steel strip; - tempering steel strip, ie continuously reheating by induction heating, or continuous heating of the gas The furnace is actively and advantageously reheated continuously (for example: using an oxygen fuel furnace called DFI).
－修剪鋼帶；－後續冷卻鋼帶；－重新矯直鋼帶；－將鋼帶重新捲繞成一鋼帶捲。- Trimming the steel strip; - Subsequent cooling of the steel strip; - Re-straightening the steel strip; - Rewinding the steel strip into a steel strip.
或者，在爐子之前、爐子之後及/或直接在板件推動單元之前，鋼帶可以被切割成板件。在難以捲繞的鋼帶之情 況下，板件的切割特別有利。在回火溫度進行切割是很有利的，這是因為鋼帶在此時具有較低的強度。Alternatively, the steel strip can be cut into sheets before the furnace, after the furnace, and/or directly before the panel push unit. In the difficult to wind the steel belt In this case, the cutting of the plates is particularly advantageous. Cutting at the tempering temperature is advantageous because the steel strip has a lower strength at this time.
在無法再被切割的較厚鋼帶及/或高強度鋼之情況中，可以設置用於切割的框架切割機、雷射切割機或熱切割機。In the case of thicker steel strips and/or high-strength steels that can no longer be cut, frame cutters, laser cutters or thermal cutters for cutting can be provided.
其中實施所謂DFI氧氣燃料法(直接火焰衝擊)以用於回火之氧氣燃料爐包含一個特殊爐子，在其中混合了(幾乎)純的氧氣，而非空氣及氣態或液態燃料，而且所產生的火焰被直接引導至鋼帶上。如此不僅使燃燒過程最佳化，而且還可以降低氮氧化物的散發。銹皮特性也很有利，或很少生成銹皮(以不足量的空氣操作)。氣體的高流率甚至對鋼帶表面上具有清潔效果。對於鋼帶表面品質來說，此種加熱特別有利。可以藉由這種方法達成與感應加熱法中具有一樣良好效率的高熱密度。The oxygen fuel furnace in which the so-called DFI oxygen fuel method (direct flame shock) is applied for tempering contains a special furnace in which (almost) pure oxygen is mixed instead of air and gaseous or liquid fuel, and the resulting The flame is directed onto the steel strip. This not only optimizes the combustion process, but also reduces the emission of nitrogen oxides. The characteristics of the scale are also very favorable, or the scale is rarely generated (operating with an insufficient amount of air). The high flow rate of the gas even has a cleaning effect on the surface of the steel strip. This heating is particularly advantageous for the surface quality of the steel strip. By this method, a high heat density which is as good as that in the induction heating method can be achieved.
取代在第一或第二程序階段中相繼地配置冷卻區段與線上矯直機器，矯直機器與鋼帶冷卻也可以被容納且組合於一個單元內。因此可以同時使用矯直滾子作為水擠壓滾子，且因而確保冷卻效果，其中，因為當鋼帶形成時已經直接消除掉任何鋼帶橫向彎曲及平坦度不足的情形，冷卻效果在鋼帶寬度上可以盡可能地均勻。藉助於矯直機器模組，矯直滾子可以根據鋼帶溫度與材料品質而被個別地調整，致使能夠避免鋼帶表面過度伸展。即使當架座或盤捲器的張力並未增長時，在冷卻區段單元前方與後方的驅動器係盡可能久地確保鋼帶張力。部分的鋼帶冷卻作用可以藉由鋼帶區域冷卻的形式實施，以便能夠主動地影響溫度 分佈。冷卻矯直單元係顯示於圖1與圖2中，這些單元的細節可以從圖4中推論而得。可以在此圖中看出矯直、冷卻與擠壓的任意可能組合方式。特別是在較薄鋼帶的情形中，為了鋼帶頭部確實螺紋旋入的程序，如圖4所示(參見雙箭頭)，冷卻矯直單元被實施成可以上升及樞轉。矯直滾子可以個別地受到調整。Instead of successively arranging the cooling section and the line straightening machine in the first or second program stage, the straightening machine and the strip cooling can also be accommodated and combined in one unit. Therefore, it is possible to simultaneously use the straightening roller as the water squeezing roller, and thus to ensure the cooling effect, wherein, since the steel strip is formed, the lateral bending and the flatness of any steel strip are directly eliminated, and the cooling effect is in the steel strip. The width can be as uniform as possible. By means of the straightening machine module, the straightening rollers can be individually adjusted depending on the temperature of the steel strip and the quality of the material, so that the surface of the steel strip can be prevented from being excessively stretched. Even when the tension of the mount or the reel does not increase, the drive in front of and behind the cooling section unit ensures the tension of the strip as long as possible. Part of the cooling of the steel strip can be carried out by cooling the steel strip area in order to actively influence the temperature distributed. The cooling straightening unit is shown in Figures 1 and 2, and the details of these units can be inferred from Figure 4. Any possible combination of straightening, cooling and squeezing can be seen in this figure. Especially in the case of thinner steel strips, the procedure for the screwing of the strip of the steel strip is as shown in Figure 4 (see double arrow), the cooling straightening unit being implemented to be able to rise and pivot. Straightening rollers can be individually adjusted.
如圖4所示，可以在矯直機器及冷卻的共同配置之前及/或之後設置用於鋼帶的溫度掃描器。鋼帶頭部形狀偵測器(用於偵測滑動或波浪起伏)可以被定位於所示設備前方。As shown in Figure 4, a temperature scanner for the steel strip can be placed before and/or after the common configuration of the straightening machine and cooling. A strip head shape detector (for detecting slip or undulation) can be positioned in front of the device shown.
在圖4中可以清楚看到驅動器24、完全冷卻器單元25、矯直滾子26及組合的擠壓滾子/驅動器27。而且，可以看見加強冷卻系統的噴嘴。The drive 24, the full cooler unit 25, the straightening rollers 26 and the combined squeeze roller/driver 27 are clearly visible in FIG. Moreover, the nozzles that enhance the cooling system can be seen.
在此情形中，也有可能交錯配置冷卻、矯直及驅動滾子。矯直的量可根據鋼帶材料及溫度而個別地調整。矯直－冷卻單元可以上升與樞轉。In this case, it is also possible to arrange the cooling, straightening and driving rollers in a staggered configuration. The amount of straightening can be individually adjusted depending on the material of the steel strip and the temperature. The straightening-cooling unit can be raised and pivoted.
從圖5可以看見，也可以將第二程序階段的矯直與加熱程序14、16與所示的設備組合在一起。同樣地，矯直的量也可以被調整成適用於目前的鋼帶溫度與鋼帶材料。在此情形中，感應加熱(或在DFI氧氣燃料法中的直接火焰衝擊)的表面效應(較高的表面溫度)具有正面的效應。同時，矯直滾子係將鋼帶固持於適當位置中且避免平坦度的不足，而使得盡可能有效的(感應式)加熱在鋼帶的長帶狀部位中是可能的。在加熱－矯直單元之前與之後的驅動器29以抗張應力30固持著鋼帶。為了確實以螺紋旋入鋼帶頭部，感 應線圈32及矯直與搬運滾子31被設計成能夠垂直調整。As can be seen from Figure 5, the straightening and heating programs 14, 16 of the second program stage can also be combined with the apparatus shown. Similarly, the amount of straightening can also be adjusted to suit current steel strip temperatures and strip materials. In this case, the surface effect (higher surface temperature) of induction heating (or direct flame impact in the DFI oxyfuel process) has a positive effect. At the same time, the straightening roller holds the steel strip in place and avoids the lack of flatness, so that the most efficient (inductive) heating is possible in the long strip of the steel strip. The steel strip is held at a tensile stress 30 by the driver 29 before and after the heating-straightening unit. In order to screw into the head of the steel strip, feel The coil 32 and the straightening and carrying roller 31 are designed to be vertically adjustable.
使用冷卻矯直單元(圖4)或加熱矯直單元(圖5)並未侷限於鋼帶設備而已，而是也可以設置於重型鋼板設備上。The use of a cooling straightening unit (Fig. 4) or a heating straightening unit (Fig. 5) is not limited to steel strip equipment, but can also be placed on heavy duty steel sheet equipment.
如圖5所示，可以在矯直機器及加熱的共同配置之前及/或之後設置一個用於鋼帶的溫度掃描器。As shown in Figure 5, a temperature scanner for the steel strip can be placed before and/or after the common configuration of the straightening machine and heating.
為了能夠在感應加熱期間，在第二程序階段中影響鋼帶整個寬度上的溫度分佈，可以使用橫向場電感器，其尤其可以橫向於鋼帶的行進方向或運送方向而位移。藉此方式，假如需要的話，例如鋼帶邊緣可以被更加強力地加熱，或者較不強烈地加熱。In order to be able to influence the temperature distribution over the entire width of the steel strip during the second programming phase during the induction heating, a transverse field inductor can be used, which can be displaced in particular transversely to the direction of travel or the direction of transport of the steel strip. In this way, for example, the edges of the steel strip can be heated more strongly, or less strongly, if desired.
藉由在暖鋼帶區段或冷鋼帶區段處的特別冷卻(區域冷卻)或加熱，在鋼帶長度與寬度上鋼帶溫度的均等化可以在將鋼帶加熱至回火溫度之前選擇性地發生。這應該是特別當要處理尚未完全冷卻至周圍溫度的鋼帶捲時提供。藉此方式，可以縮短鋼帶捲通過鋼帶捲儲存器的時間。鋼帶捲追蹤系統(模組)及在鋼帶捲展開期間所測量到的溫度分佈係被用於加熱或冷卻系統的最佳控制。By special cooling (zone cooling) or heating at the warm steel strip section or the cold strip section, the equalization of the strip temperature over the length and width of the strip can be selected before heating the strip to the tempering temperature Occurs sexually. This should be provided especially when dealing with steel coils that have not been completely cooled to ambient temperature. In this way, the time during which the steel strip roll passes through the steel strip roll reservoir can be shortened. The strip reel tracking system (module) and the temperature profile measured during the unwinding of the strip are used for optimal control of the heating or cooling system.
將已接單焊接好(welded－to－order)、高抗磨損滾子材料使用於矯直滾子，以確保更長的使用壽命及很好的品質。Welded-to-order, high wear-resistant roller materials are used to straighten the rollers to ensure a longer service life and good quality.
在生產線內的溫度掃描器及平坦度計量器間接地監控鋼帶品質，且作為用於調整及調節信號的構件，例如用於生產速度、加熱功率、藉由一個程序模組而受到控制的矯直滾子及冷卻的調整。The temperature scanner and flatness meter in the production line indirectly monitor the quality of the steel strip and serve as a means for adjusting and adjusting the signal, for example for production speed, heating power, and control by a program module. Straight roller and cooling adjustment.
圖6顯示在稍微修改過的實例中之第一程序階段。與 圖1相似的，圖6顯示精軋機組7的後部、層流鋼帶冷卻單元9、10、以及一個加強冷卻系統11與捲繞座3。在此實例中，加強冷卻系統11及鋼帶矯直單元36.1、36.2係位於不同位置。驅動器34與35係位於加強冷卻系統11的前方與後方。在此，鋼帶張力在幾乎整個鋼帶長度中可以被保持在加強冷卻系統11內，而不會將鋼帶被夾在架座或盤捲器系統內。因此，可能產生的任何鋼帶波形物會被取出來，且可能達到盡可能均勻的冷卻效果。Figure 6 shows the first program phase in a slightly modified example. versus Similar to Figure 1, Figure 6 shows the rear of the finishing train 7, the laminar steel strip cooling units 9, 10, and a reinforced cooling system 11 and winding station 3. In this example, the reinforced cooling system 11 and the strip straightening units 36.1, 36.2 are located at different locations. The drivers 34 and 35 are located in front of and behind the reinforced cooling system 11. Here, the tension of the steel strip can be maintained in the reinforced cooling system 11 for almost the entire length of the steel strip without the steel strip being clamped in the pedestal or coiler system. Therefore, any steel strip undulations that may be produced are taken out and it is possible to achieve as uniform a cooling effect as possible.
為了確保鋼帶能夠在驅動器34、35及/或加強冷卻系統11中對中地行進，所以一個鋼帶橫向導引件33.1特別有利地係位於其前方。在鋼帶頭部已經通過驅動器33.1及加強冷卻系統11之後，橫向導引件33.1再次被打開，致使不會妨礙層流鋼帶冷卻系統10中的水流。然後，導引件33.2接管剩餘鋼帶的導引任務。同樣地，對於鋼帶末端來說，在鋼帶末端已經離開精軋機組之後，導引件33.1被再次簡單調整過，以抵銷鋼帶末端的任何偏移現象。為了使冷卻區段長度縮到最小，因此，橫向導引件33.1較佳地位於鋼帶冷卻單元10內側。In order to ensure that the steel strip can travel centrally in the drives 34, 35 and/or the reinforced cooling system 11, a steel strip lateral guide 33.1 is particularly advantageously located in front of it. After the strip head has passed the drive 33.1 and the cooling system 11 is reinforced, the transverse guides 33.1 are again opened, so that the flow of water in the laminar strip cooling system 10 is not hindered. The guide 33.2 then takes over the guiding task of the remaining steel strip. Similarly, for the end of the strip, after the end of the strip has left the finishing train, the guide 33.1 is simply adjusted again to counteract any offset at the end of the strip. In order to minimize the length of the cooling section, the lateral guides 33.1 are preferably located inside the steel strip cooling unit 10.
在個別的捲繞座3之前，矯直滾子36.1、36.2在增長出鋼帶張力之後便下沉至鋼帶平面中，且藉由將鋼帶繞著基部撓曲、撓曲或驅動滾子來提供鋼帶的矯直效果。當撓曲滾子26(參見圖4)位於加強冷卻區段11內側時，實施類似的操作態樣。Before the individual winding seats 3, the straightening rollers 36.1, 36.2 sink into the plane of the steel strip after increasing the tension of the steel strip and deflect, flex or drive the rollers around the base by bending the steel strip To provide the straightening effect of the steel strip. A similar operational aspect is implemented when the flex roller 26 (see Fig. 4) is located inside the reinforced cooling section 11.
1‧‧‧鋼帶(在精軋機組之後具有最終厚度)1‧‧‧ steel strip (with final thickness after finishing train)
2‧‧‧鋼帶捲2‧‧‧Steel coil
3‧‧‧捲繞座3‧‧‧ winding seat
4‧‧‧展開座4‧‧‧Opening
5‧‧‧捲繞座5‧‧‧ winding seat
6‧‧‧鋼帶(在精軋機組內側具有中間厚度)6‧‧‧ steel strip (intermediate thickness on the inside of the finishing mill)
7‧‧‧精軋機組7‧‧‧Rolling mill
8‧‧‧鋼帶冷卻8‧‧‧Steel belt cooling
9‧‧‧加強層流鋼帶冷卻9‧‧‧Enhanced laminar steel strip cooling
10‧‧‧層流鋼帶冷卻10‧‧‧Laminar steel strip cooling
11‧‧‧加強冷卻11‧‧‧Enhanced cooling
12‧‧‧盤捲器12‧‧‧ coiler
13‧‧‧盤捲器13‧‧‧ coiler
14‧‧‧矯直機器14‧‧‧ Straightening machine
15‧‧‧區域15‧‧‧Area
16‧‧‧爐子16‧‧‧ stove
17‧‧‧修剪剪切機17‧‧‧Pruning shears
18‧‧‧剪切機18‧‧‧Shearing machine
19‧‧‧空氣冷卻或層流鋼帶冷卻19‧‧‧Air cooled or laminar steel strip cooling
20‧‧‧矯直機器20‧‧‧ Straightening machine
21‧‧‧板件推動單元21‧‧‧Plate push unit
22‧‧‧盤捲器22‧‧‧ coiler
23‧‧‧盤捲器23‧‧‧ coiler
24‧‧‧驅動器24‧‧‧ Drive
25‧‧‧完全冷卻單元25‧‧‧Full cooling unit
26‧‧‧矯直滾子26‧‧‧ Straightening roller
27‧‧‧擠壓滾子/驅動器27‧‧‧Squeeze roller/driver
28‧‧‧加強冷卻系統的噴嘴28‧‧‧Enhance the nozzle of the cooling system
29‧‧‧驅動器29‧‧‧ Drive
30‧‧‧抗張應力30‧‧‧ tensile stress
31‧‧‧搬運滾子31‧‧‧ Carrying rollers
32‧‧‧感應線圈32‧‧‧Induction coil
33.1‧‧‧在第一驅動器前/在加強冷卻前的橫向導引件33.1‧‧‧ Horizontal guides in front of the first drive / before reinforced cooling
33.2‧‧‧在盤捲器驅動器之前的橫向導引件33.2‧‧‧Horizontal guides before the coiler drive
34‧‧‧在加強冷卻之前的驅動器34‧‧‧Drives prior to enhanced cooling
35‧‧‧在加強冷卻之後的驅動器35‧‧‧Drives after enhanced cooling
36.1‧‧‧在第一捲繞座之前的矯直滾子36.1‧‧‧ Straightening rollers before the first winding seat
36.2‧‧‧在第二捲繞座之前的矯直滾子36.2‧‧‧ Straightening rollers before the second winding seat
I‧‧‧第一程序階段I‧‧‧First stage of procedure
II‧‧‧第二程序階段II‧‧‧Second procedure phase
F‧‧‧運送方向F‧‧‧Transportation direction
To ‧‧‧周圍溫度T o ‧‧‧ ambient temperature
圖式說明了本發明的範例性實例。The drawings illustrate an illustrative example of the invention.
圖1概略地顯示依據本發明第一實例用於製造鋼帶的熱鋼帶軋鋼機。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view schematically showing a hot steel strip rolling mill for producing a steel strip according to a first example of the present invention.
圖2顯示圖1熱鋼帶軋鋼機之另一實施例。Figure 2 shows another embodiment of the hot strip mill of Figure 1.
圖3顯示在熱鋼帶軋鋼機的運送方向上鋼帶的範例性溫度輪廓。Figure 3 shows an exemplary temperature profile of the steel strip in the direction of transport of the hot strip mill.
圖4顯示具有整合式加強冷卻作用的矯直機器之基礎結構，其係作為依據圖1或圖2的熱鋼帶軋鋼機之區段。Figure 4 shows the basic structure of a straightening machine with integrated reinforced cooling as part of a hot strip mill according to Figure 1 or Figure 2.
圖5顯示具有整合式加熱作用的矯直機器之基礎結構，其係作為依據圖1或圖2的熱鋼帶軋鋼機之區段。Figure 5 shows the basic structure of a straightening machine with integrated heating as part of a hot strip mill according to Figure 1 or Figure 2.
圖6概略地顯示具有第一程序步驟的替代實例之熱鋼帶軋鋼機。Figure 6 shows diagrammatically a hot strip mill having an alternative example of the first process step.
1‧‧‧鋼帶(在精軋機組之後具有最終厚度)1‧‧‧ steel strip (with final thickness after finishing train)
2‧‧‧鋼帶捲2‧‧‧Steel coil
3‧‧‧捲繞座3‧‧‧ winding seat
4‧‧‧展開座4‧‧‧Opening
5‧‧‧捲繞座5‧‧‧ winding seat
6‧‧‧鋼帶(在精軋機組內側具有中間厚度)6‧‧‧ steel strip (intermediate thickness on the inside of the finishing mill)
7‧‧‧精軋機組7‧‧‧Rolling mill
8‧‧‧鋼帶冷卻8‧‧‧Steel belt cooling
9‧‧‧加強層流鋼帶冷卻9‧‧‧Enhanced laminar steel strip cooling
10‧‧‧加強鋼帶冷卻10‧‧‧Strengthened steel strip cooling
11‧‧‧加強冷卻11‧‧‧Enhanced cooling
12‧‧‧盤捲器12‧‧‧ coiler
13‧‧‧盤捲器13‧‧‧ coiler
14‧‧‧矯直機器14‧‧‧ Straightening machine
15‧‧‧區域15‧‧‧Area
16‧‧‧爐子16‧‧‧ stove
17‧‧‧修剪剪切機17‧‧‧Pruning shears
18‧‧‧剪切機18‧‧‧Shearing machine
19‧‧‧空氣冷卻或層流鋼帶冷卻19‧‧‧Air cooled or laminar steel strip cooling
20‧‧‧矯直機器20‧‧‧ Straightening machine
21‧‧‧板件推動單元21‧‧‧Plate push unit
22‧‧‧盤捲器22‧‧‧ coiler
I‧‧‧第一程序階段I‧‧‧First stage of procedure
II‧‧‧第二程序階段II‧‧‧Second procedure phase
F‧‧‧運送方向F‧‧‧Transportation direction
T0 ‧‧‧周圍溫度T 0 ‧‧‧ ambient temperature
Claims (36)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007029280 | 2007-06-22 | ||
| DE102008010062A DE102008010062A1 (en) | 2007-06-22 | 2008-02-20 | Process for hot rolling and heat treatment of a strip of steel |
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| Publication Number | Publication Date |
|---|---|
| TW200914157A TW200914157A (en) | 2009-04-01 |
| TWI412410B true TWI412410B (en) | 2013-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW097120680A TWI412410B (en) | 2007-06-22 | 2008-06-04 | Method for hot rolling and for heat treatment of a strip of steel |
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| US (1) | US20100175452A1 (en) |
| EP (1) | EP2162557B1 (en) |
| JP (1) | JP5485147B2 (en) |
| KR (1) | KR101153732B1 (en) |
| CN (1) | CN101755058B (en) |
| AR (1) | AR067091A1 (en) |
| AT (1) | ATE504665T1 (en) |
| AU (1) | AU2008267505B2 (en) |
| BR (1) | BRPI0812324A2 (en) |
| CA (1) | CA2686377C (en) |
| DE (2) | DE102008010062A1 (en) |
| DK (1) | DK2162557T3 (en) |
| EG (1) | EG25307A (en) |
| ES (1) | ES2362052T3 (en) |
| MX (1) | MX2009013530A (en) |
| MY (1) | MY148425A (en) |
| PL (1) | PL2162557T3 (en) |
| RU (1) | RU2429922C1 (en) |
| SI (1) | SI2162557T1 (en) |
| TW (1) | TWI412410B (en) |
| UA (1) | UA98653C2 (en) |
| WO (1) | WO2009000387A1 (en) |
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| CN110616299A (en) * | 2018-06-19 | 2019-12-27 | 宝钢湛江钢铁有限公司 | Production method of high-strength steel |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20100007940A (en) | 2010-01-22 |
| TW200914157A (en) | 2009-04-01 |
| ES2362052T3 (en) | 2011-06-27 |
| US20100175452A1 (en) | 2010-07-15 |
| KR101153732B1 (en) | 2012-06-14 |
| DK2162557T3 (en) | 2011-07-11 |
| WO2009000387A1 (en) | 2008-12-31 |
| CN101755058B (en) | 2011-11-09 |
| ZA200907733B (en) | 2010-06-30 |
| CA2686377A1 (en) | 2008-12-31 |
| MY148425A (en) | 2013-04-30 |
| JP2010530807A (en) | 2010-09-16 |
| MX2009013530A (en) | 2010-01-27 |
| EG25307A (en) | 2011-12-07 |
| ATE504665T1 (en) | 2011-04-15 |
| EP2162557B1 (en) | 2011-04-06 |
| BRPI0812324A2 (en) | 2014-11-25 |
| AU2008267505A1 (en) | 2008-12-31 |
| PL2162557T3 (en) | 2011-09-30 |
| AU2008267505B2 (en) | 2010-11-25 |
| CA2686377C (en) | 2011-09-27 |
| CN101755058A (en) | 2010-06-23 |
| RU2010101900A (en) | 2011-07-27 |
| DE102008010062A1 (en) | 2008-12-24 |
| RU2429922C1 (en) | 2011-09-27 |
| UA98653C2 (en) | 2012-06-11 |
| EP2162557A1 (en) | 2010-03-17 |
| DE502008003118D1 (en) | 2011-05-19 |
| AR067091A1 (en) | 2009-09-30 |
| JP5485147B2 (en) | 2014-05-07 |
| SI2162557T1 (en) | 2011-08-31 |
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