TW202407109A - Induction heating device of metal sheet, metal sheet processing equipment, and induction heating method of metal sheet - Google Patents
Induction heating device of metal sheet, metal sheet processing equipment, and induction heating method of metal sheet Download PDFInfo
- Publication number
- TW202407109A TW202407109A TW111128717A TW111128717A TW202407109A TW 202407109 A TW202407109 A TW 202407109A TW 111128717 A TW111128717 A TW 111128717A TW 111128717 A TW111128717 A TW 111128717A TW 202407109 A TW202407109 A TW 202407109A
- Authority
- TW
- Taiwan
- Prior art keywords
- metal plate
- conductor member
- metal
- induction heating
- heating device
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 321
- 239000002184 metal Substances 0.000 title claims abstract description 321
- 238000010438 heat treatment Methods 0.000 title claims abstract description 117
- 230000006698 induction Effects 0.000 title claims abstract description 81
- 238000012545 processing Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 10
- 239000004020 conductor Substances 0.000 claims abstract description 205
- 238000005275 alloying Methods 0.000 claims abstract description 14
- 230000005291 magnetic effect Effects 0.000 claims description 36
- 239000011162 core material Substances 0.000 claims description 20
- 238000005097 cold rolling Methods 0.000 claims description 11
- 238000005554 pickling Methods 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 230000004907 flux Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- General Induction Heating (AREA)
Abstract
Description
本揭示是有關於一種金屬板的感應加熱裝置、金屬板的加工設備及金屬板的感應加熱方法。The present disclosure relates to an induction heating device for metal plates, metal plate processing equipment and an induction heating method for metal plates.
在不鏽鋼、高張力鋼等較硬的鋼材之冷軋延中,因為鋼材的脆性與常規相比會較高,所以有時會在寬度方向的端部發生端部龜裂。例如在日本專利特開2010-221224號公報中,記載有一種對應處理此種端部龜裂之技術。更具體而言,在日本專利特開2010-221224號公報中記載有如下之技術:使用配置成從上下夾著鋼板的寬度方向的端部之C字形的電感器將端部感應加熱,使端部中的鋼板的變形阻力降低,藉此防止端部龜裂。 又,在如熱軋扁胚(slab)之厚鋼材的情況下,鋼材的端部會在從加熱爐被取出並進行粗軋延而來到進行精軋延之前變冷。因此,為了熱軋材的軋延尺寸精度之提升、品質穩定化,通常會在精軋延機前設置如前述之C字形的電感器等之橫向式感應加熱裝置。 又,在熔融鋅鍍敷的合金化等中,為了防止端部溫度的降低而成為合金化不良,在例如日本專利特開2009-149970號公報中記載有一種具備端部檢測機構與移動機構之利用火焰進行的溫度補償裝置。 In the cold rolling of relatively hard steel materials such as stainless steel and high-tensile steel, end cracks may occur at the ends in the width direction because the brittleness of the steel materials is higher than conventional steel materials. For example, Japanese Patent Application Laid-Open No. 2010-221224 describes a technology for dealing with such end cracks. More specifically, Japanese Patent Application Laid-Open No. 2010-221224 describes a technique in which a C-shaped inductor arranged in a C-shape sandwiching the widthwise end of a steel plate from above and below is used to inductively heat the end portion to cause the end portion to be inductively heated. The deformation resistance of the steel plate in the end is reduced, thereby preventing end cracks. In addition, in the case of thick steel materials such as hot-rolled slabs, the ends of the steel materials become cold before being taken out from the heating furnace and subjected to rough rolling and before finishing rolling. Therefore, in order to improve the rolling dimensional accuracy and stabilize the quality of hot-rolled materials, a transverse induction heating device such as the aforementioned C-shaped inductor is usually installed in front of the finishing rolling mill. Furthermore, in order to prevent the end temperature from lowering and causing alloying defects during alloying of molten zinc plating, for example, Japanese Patent Application Laid-Open No. 2009-149970 describes an end detection mechanism and a moving mechanism. Temperature compensation device using flame.
發明欲解決之課題The problem to be solved by the invention
在上述之日本專利特開2010-221224號公報中也記載有以下作法:藉由設置使電感器在鋼板的寬度方向上移動之台車、與控制台車的移動之位置控制器,而對應於鋼板的寬度的變化或搬送時的蛇行來維持電感器與鋼板的適當的重疊長度。然而,作為其先前的問題,在C字形的電感器的情況下,因為洩漏至電感器的外側之磁通,除了受到電感器所夾著的部分以外還有廣大的範圍會被感應加熱。另一方面,為了防止金屬板之端部龜裂,只要能夠對金屬板的寬度方向的端部附近的窄範圍進行加熱即為充分,因此日本專利特開2010-221224號公報所記載之技術至少在消耗電力方面不能說是有效率的。又,存在有若不縮窄電感器間隙便無法有效加熱之課題,而在熱軋鋼板等之形狀不佳的被加熱材上,有因與電感器之接觸所導致之裝置的破損等的疑慮。此外,用於對應蛇行等之檢測機構、移動機構控制裝置等的附帶設備不可或缺,也有成本上的缺點。 又,在如日本專利特開2009-149970號公報所示地藉由火焰加熱鋼板端部的情況下,存在有由火焰所形成之加熱能力並不大且加熱效率亦低之能力上的問題、與需要端部檢測機構/移動機構等的附帶設備等之缺點。 The above-mentioned Japanese Patent Application Laid-Open No. 2010-221224 also describes a method of providing a trolley that moves the inductor in the width direction of the steel plate and a position controller that controls the movement of the trolley, thereby corresponding to the steel plate. The width changes or the meandering during transportation are used to maintain the appropriate overlap length between the inductor and the steel plate. However, as a previous problem, in the case of a C-shaped inductor, due to magnetic flux leaking to the outside of the inductor, a wide range other than the portion sandwiched by the inductor is inductively heated. On the other hand, in order to prevent the edge portion of the metal plate from cracking, it is sufficient to heat a narrow range near the end portion in the width direction of the metal plate. Therefore, the technology described in Japanese Patent Application Laid-Open No. 2010-221224 is at least It cannot be said to be efficient in terms of power consumption. In addition, there is a problem that effective heating cannot be achieved unless the inductor gap is narrowed, and there is a concern that the device may be damaged due to contact with the inductor on poorly shaped materials to be heated, such as hot-rolled steel plates. . In addition, auxiliary equipment such as a detection mechanism and a moving mechanism control device for handling snaking are indispensable, which also has a cost disadvantage. Furthermore, when the edge of the steel plate is heated by a flame as shown in Japanese Patent Application Laid-Open No. 2009-149970, there is a problem that the heating ability of the flame is not large and the heating efficiency is also low. Disadvantages include the need for additional equipment such as end detection mechanisms/moving mechanisms.
於是,本揭示之目的在於提供一種技術,即使有金屬板的板寬變更或蛇行搬送,仍然藉由有效率地僅對金屬板的寬度方向的端部的特定範圍進行加熱來使金屬板的端部溫度上升,而使端部的品質穩定化,並且防止金屬板的端部龜裂、提升軋延尺寸精度或避免合金化不良等,解決起因於板端部的溫度降低之問題。 用以解決課題之手段 Therefore, an object of this disclosure is to provide a technology that efficiently heats only a specific range of the ends of the metal plate in the width direction, even if the width of the metal plate is changed or the metal plate is meandering, so that the ends of the metal plate can be heated. The end temperature rises to stabilize the quality of the end, prevent cracks at the end of the metal plate, improve rolling dimensional accuracy or avoid alloying defects, etc., and solve problems caused by the temperature drop at the end of the plate. means to solve problems
本揭示的一個態樣為一種金屬板的感應加熱裝置,具備:第1導體構件,和金屬板的正面以及背面的至少其中一面相向,且在寬度方向上橫跨前述金屬板而配置;第2導體構件,從前述第1導體構件朝前述金屬板的過板方向分開相當於第1距離,並和前述金屬板的正面以及背面的至少其中一面相向,且在寬度方向上橫跨前述金屬板而配置;連接構件,在已從前述金屬板的寬度方向端部分開的位置上將前述第1導體構件以及前述第2導體構件相互連接而形成1次閉迴路;及交流電源,和前述1次閉迴路連接, 前述第1距離比前述第1導體構件以及前述第2導體構件在前述金屬板的過板方向上的尺寸之總和更大。 One aspect of the present disclosure is an induction heating device for a metal plate, including: a first conductor member facing at least one of the front and back surfaces of the metal plate and disposed across the metal plate in the width direction; The conductor member is spaced apart from the first conductor member by a first distance in the direction across the metal plate, faces at least one of the front and back surfaces of the metal plate, and spans the metal plate in the width direction. Arrangement; a connecting member that connects the first conductor member and the second conductor member to each other at a position separated from the width direction end of the metal plate to form a primary closed circuit; and an AC power supply, and the primary closed circuit loop connection, The first distance is larger than the sum of the dimensions of the first conductor member and the second conductor member in the direction of the metal plate passing through the metal plate.
本揭示的其他的態樣為一種金屬板的感應加熱方法,包含以下步驟: 對1次閉迴路流通交流電流,前述1次閉迴路是藉由第1導體構件、第2導體構件、與在已從金屬板的寬度方向端部分開的位置上將前述第1導體構件以及前述第2導體構件相互連接之連接構件所形成,前述第1導體構件和前述金屬板的正面以及背面的至少其中一面相向,且在寬度方向上橫跨前述金屬板而配置,前述第2導體構件和前述金屬板的正面以及背面的至少其中一面相向,並從前述第1導體構件朝前述金屬板的過板方向分開相當於第1距離,且在寬度方向上橫跨前述金屬板而配置;及 藉由2次閉迴路通過前述金屬板的寬度方向端部而將前述金屬板的寬度方向端部感應加熱,前述2次閉迴路藉由在前述金屬板中分別和前述第1導體構件以及前述第2導體構件相向的區域產生之感應電流而形成。 發明效果 Another aspect of the present disclosure is an induction heating method of metal plates, including the following steps: An alternating current flows through a primary closed circuit, and the primary closed circuit is formed by a first conductor member, a second conductor member, and the first conductor member and the aforementioned conductor member at a position separated from the width direction end of the metal plate. The first conductor member is formed by a connecting member connecting the second conductor members to each other. The first conductor member faces at least one of the front and back surfaces of the metal plate and is arranged across the metal plate in the width direction. The second conductor member and At least one of the front and back surfaces of the metal plate faces each other, is separated by a first distance from the first conductor member in a direction across the metal plate, and is arranged across the metal plate in the width direction; and The width direction end of the metal plate is inductively heated by a secondary closed circuit passing through the width direction end of the metal plate, and the secondary closed circuit is connected to the first conductor member and the first conductor member in the metal plate respectively. It is formed by the induced current generated in the areas where the 2 conductive members face each other. Invention effect
根據本揭示,即使有金屬板的板寬變更或蛇行搬送,仍藉由有效率地僅對金屬板的寬度方向的端部的特定範圍進行加熱來使金屬板的端部溫度上升,而可以使端部的品質穩定化,並且防止金屬板的端部龜裂、提升軋延尺寸精度或避免合金化不良等,解決起因於板端部的溫度降低之問題。According to the present disclosure, even if the width of the metal plate is changed or the metal plate is meandering, the temperature of the end portion of the metal plate can be increased by efficiently heating only a specific range of the end portion in the width direction of the metal plate. It stabilizes the quality of the end and prevents cracks at the end of the metal plate, improves rolling dimensional accuracy, avoids alloying defects, etc., and solves problems caused by the temperature drop at the end of the plate.
用以實施發明之形態Form used to implement the invention
以下,一邊參照附加圖式,一邊針對本揭示的一個實施形態來詳細地說明。再者,在本說明書及圖式中,針對實質上具有相同功能構成的構成要素會賦與相同的符號,並藉此省略已重複之說明。Hereinafter, one embodiment of the present disclosure will be described in detail with reference to the attached drawings. In addition, in this specification and the drawings, components having substantially the same functional configuration will be assigned the same reference numerals, and repeated descriptions will be omitted.
(第1實施形態) 圖1是本揭示之第1實施形態的金屬板的感應加熱裝置的平面圖,圖2A是相當於圖1所示之感應加熱裝置之2A-2A線箭頭視圖的側面圖。如圖1以及圖2所示,本實施形態的感應加熱裝置100是利用電磁感應來加熱作為金屬板的金屬帶板S之裝置。在此,在本實施形態中使用的金屬帶板S例如是帶狀的薄板,但本揭示不限定於此。 (First Embodiment) FIG. 1 is a plan view of a metal plate induction heating device according to the first embodiment of the present disclosure, and FIG. 2A is a side view corresponding to the arrow view along line 2A-2A of the induction heating device shown in FIG. 1 . As shown in FIGS. 1 and 2 , the induction heating device 100 of this embodiment is a device that uses electromagnetic induction to heat a metal strip S which is a metal plate. Here, the metal strip plate S used in this embodiment is, for example, a strip-shaped thin plate, but the present disclosure is not limited to this.
本實施形態的感應加熱裝置100包含導體構件110、120、連接構件131、132與交流電源140。導體構件110與金屬帶板S的正面以及背面的至少其中一面相向,且在寬度方向上橫跨金屬帶板S而配置。導體構件120也是和導體構件110同樣地與金屬帶板S的正面以及背面的至少其中一面相向,且在寬度方向上橫跨金屬帶板S而配置。導體構件120已從導體構件110朝金屬帶板S的過板方向(圖1中以箭頭PD表示之方向)分開相當於距離L。在此,距離L是導體構件110、120的內側間距離。距離L(內側間距離)比導體構件110、120在金屬帶板S的過板方向上的尺寸B1、B2之總和更大(L>B1+B2)。此外,本實施形態的距離L是本揭示中的第1距離之一例。The induction heating device 100 of this embodiment includes conductive members 110 and 120, connecting members 131 and 132, and an AC power supply 140. The conductive member 110 faces at least one of the front surface and the back surface of the metal strip plate S, and is arranged across the metal strip plate S in the width direction. Like the conductor member 110 , the conductor member 120 faces at least one of the front surface and the back surface of the metal strip plate S and is arranged across the metal strip plate S in the width direction. The conductor member 120 is separated by a distance L from the conductor member 110 in the direction across the metal strip S (the direction indicated by arrow PD in FIG. 1 ). Here, the distance L is the distance between the inner sides of the conductor members 110 and 120 . The distance L (distance between inner sides) is larger than the sum of the dimensions B1 and B2 of the conductor members 110 and 120 in the passing direction of the metal strip plate S (L>B1+B2). In addition, the distance L in this embodiment is an example of the first distance in this disclosure.
連接構件131、132於平面視角下,是在已從金屬帶板S的寬度方向端部分開的位置上將導體構件110、120相互連接而形成1次閉迴路101,並且對1次閉迴路101連接交流電源140。連接構件131、132只要可從金屬帶板S的最大板寬的寬度方向端部SE分開即可。具體而言,從連接構件131、132到金屬帶板S之寬度方向端部SE為止的距離E較佳為金屬帶板S的最大寬度Wmax的3%以上且12%以下,更佳為5%以上且10%以下。所期望的是,距離E與最大寬度Wmax之關係會考慮搬送金屬帶板S之搬送產線(line)的蛇行量。此外,在距離E小於最大寬度Wmax的3%的情況下,有金屬帶板S的寬度方向端部SE因蛇行而接觸到連接構件131或連接構件132之疑慮。另一方面,在距離E超過最大寬度Wmax的12%的情況下,所顧慮的是,裝置的大型化以及1次閉迴路101的阻抗增大。The connection members 131 and 132 connect the conductor members 110 and 120 to each other at positions separated from the width direction ends of the metal strip plate S in a plan view, forming the primary closed circuit 101, and the primary closed circuit 101 Connect AC power 140. The connecting members 131 and 132 only need to be separable from the width direction end SE of the maximum plate width of the metal strip plate S. Specifically, the distance E from the connecting members 131 and 132 to the width direction end SE of the metal strip plate S is preferably 3% or more and 12% or less of the maximum width Wmax of the metal strip plate S, more preferably 5%. Above and below 10%. It is expected that the relationship between the distance E and the maximum width Wmax will take into account the meandering amount of the conveying line for conveying the metal strip plate S. In addition, when the distance E is less than 3% of the maximum width Wmax, the width direction end SE of the metal strip S may come into contact with the connecting member 131 or 132 due to meandering. On the other hand, when the distance E exceeds 12% of the maximum width Wmax, there are concerns about an increase in the size of the device and an increase in the impedance of the primary closed circuit 101 .
又,導體構件110、120是和金屬帶板S的正面以及背面的至少其中一面相向。因此,藉著交流電源140使交流電流流通於1次閉迴路101而在導體構件110、120的周圍產生之磁場會使金屬帶板S產生後述之感應電流。In addition, the conductor members 110 and 120 face at least one of the front surface and the back surface of the metal strip plate S. Therefore, when the AC power supply 140 causes an AC current to flow through the primary closed circuit 101, the magnetic field generated around the conductor members 110 and 120 causes the metal strip S to generate an induced current described below.
在此,本實施形態的導體構件110、120如圖2A所示,雙方包含有各自和金屬帶板S的正面以及背面相向之2個板部111、112以及板部121、122。換言之,導體構件110的板部111、112各自和金屬帶板S的正面以及背面相向而配置,導體構件120的板部121、122各自和金屬帶板S的正面以及背面相向而配置。再者,本揭示不限定於此,亦可如圖2B所示之例,使導體構件110的板部111和金屬帶板S的正面相向並使導體構件120的板部122和金屬帶板S的背面相向,亦可使導體構件110的板部112和金屬帶板S的背面相向並使導體構件120的板部121和金屬帶板S的正面相向。又,亦可如圖2C所示之例,使導體構件110的板部111以及導體構件120的板部121之雙方都僅和金屬帶板S的正面相向,亦可使導體構件110的板部112以及導體構件120的板部122之雙方都僅和金屬帶板S的背面相向。換言之,導體構件110與導體構件120是分別和金屬帶板S的相同側之面相向而配置。Here, as shown in FIG. 2A , the conductor members 110 and 120 of this embodiment include two plate portions 111 and 112 and plate portions 121 and 122 respectively facing the front and back surfaces of the metal strip plate S. In other words, the plate portions 111 and 112 of the conductor member 110 are arranged to face the front and back surfaces of the metal strip plate S, and the plate portions 121 and 122 of the conductor member 120 are arranged to face the front and back faces of the metal strip plate S. Furthermore, the present disclosure is not limited to this. For example, as shown in FIG. 2B , the plate portion 111 of the conductor member 110 and the front surface of the metal strip plate S may face each other and the plate portion 122 of the conductor member 120 and the metal strip plate S may be aligned. Alternatively, the plate portion 112 of the conductor member 110 and the back surface of the metal strip plate S may face each other, and the plate portion 121 of the conductor member 120 and the front face of the metal strip plate S may face each other. Alternatively, as shown in FIG. 2C , both the plate portion 111 of the conductor member 110 and the plate portion 121 of the conductor member 120 may face only the front surface of the metal strip plate S, or the plate portion of the conductor member 110 may be 112 and the plate portion 122 of the conductor member 120 both face only the back surface of the metal strip plate S. In other words, the conductor member 110 and the conductor member 120 are respectively arranged to face the same side surface of the metal strip plate S.
在本實施形態中,如圖1以及圖2A所示,藉由導體構件110、120與連接構件131、132而構成有空心線圈。藉由此空心線圈所構成之1次閉迴路101已和交流電源140連接。In this embodiment, as shown in FIGS. 1 and 2A , an air-core coil is configured by conductor members 110 and 120 and connection members 131 and 132 . The primary closed loop 101 formed by this air-core coil is connected to the AC power supply 140.
圖3是概念性地顯示在圖1以及圖2A的例子中於金屬帶板S產生之感應電流I的圖。藉由在金屬帶板S中和感應加熱裝置100的導體構件110、120分別相向之區域產生的感應電流I所形成之2次閉迴路102,在和導體構件110、120分別相向之區域中是朝金屬帶板S的寬度方向流動,並在這些區域的兩端部之間通過金屬帶板S的寬度方向端部SE。如此進行,2次閉迴路102的感應電流是在金屬帶板S內環繞。在2次閉迴路102中流動之感應電流I,在金屬帶板S的中央部因為電流密度較小所以可以抑制發熱量,但在寬度方向端部SE會由於高頻電流集中於端部之集膚效應而使從端部起算之限定範圍的電流密度變高。藉此,可以有效地加熱金屬帶板S的寬度方向端部SE。 如由圖3清楚可知地,在本揭示中,對於在以螺線管線圈加熱薄板之所謂LF加熱方式中成為問題之起因於電流的穿透深度而無法加熱非磁性材料的問題,因為將導體在行進方向上不重疊地錯開而使得環繞電流不重疊,所以不論是非磁性材料或是磁性材料皆可加熱。 FIG. 3 is a diagram conceptually showing the induced current I generated in the metal strip S in the example of FIGS. 1 and 2A . The secondary closed circuit 102 formed by the induced current I generated in the metal strip S in the area facing the conductor members 110 and 120 of the induction heating device 100 is It flows in the width direction of the metal strip S and passes through the width direction end SE of the metal strip S between both ends of these areas. In this way, the induced current of the secondary closed loop 102 circulates within the metal strip plate S. The induced current I flowing in the secondary closed circuit 102 can suppress the amount of heat generated in the central part of the metal strip plate S because the current density is small, but at the ends SE in the width direction, the high-frequency current is concentrated at the ends. The skin effect causes the current density in a limited range from the end to become higher. Thereby, the width direction end SE of the metal strip plate S can be heated efficiently. As is clear from FIG. 3 , in the present disclosure, the problem of being unable to heat a non-magnetic material due to the penetration depth of the electric current, which is a problem in the so-called LF heating method in which a solenoid coil is used to heat a thin plate, is addressed because the conductor is They are staggered without overlapping in the direction of travel so that the surrounding currents do not overlap, so both non-magnetic materials and magnetic materials can be heated.
此外,藉由使導體構件110、120在金屬帶板S的過板方向上分開相當於距離L,金屬帶板S的寬度方向端部SE之加熱持續之時間會變長。具體而言,在將金屬帶板S的過板速度設為v時,因為金屬帶板S的寬度方向端部SE在通過導體構件120之下(或上)之後直到通過導體構件110之下(或上)之前的期間會持續加熱,所以加熱持續時間為L/v。另一方面,因為金屬帶板S的寬度方向中央部僅在通過導體構件120之下(或上)的期間、以及通過導體構件110之下(或上)的期間被加熱,所以加熱持續時間為(B1+B2)/v。從而,可以藉由設成L>B1+B2,而讓加熱持續時間相較於金屬帶板S的寬度方向中央部,在寬度方向端部SE變得較長。如此,金屬帶板S的寬度方向中央部的發熱量Qc以及寬度方向端部SE的發熱量Qe,可以藉由導體構件110、120之間的距離L以及各自的尺寸B1、B2來調節。又,發熱量Qc,Qe也可以藉由交流電流的頻率f來調節。In addition, by separating the conductor members 110 and 120 by a distance L in the direction across the metal strip S, the heating duration of the widthwise end SE of the metal strip S becomes longer. Specifically, when the speed of the metal strip S is v, because the width direction end SE of the metal strip S passes below (or above) the conductor member 120 until it passes below the conductor 110 ( or above) will continue to heat, so the heating duration is L/v. On the other hand, since the center portion in the width direction of the metal strip S is heated only while passing under (or over) the conductor member 120 and while passing under (or over) the conductor member 110, the heating duration is: (B1+B2)/v. Therefore, by setting L>B1+B2, the heating duration can be made longer at the width direction end SE than at the width direction center part of the metal strip plate S. In this way, the calorific value Qc of the widthwise central portion of the metal strip plate S and the calorific value Qe of the widthwise end portion SE can be adjusted by the distance L between the conductor members 110 and 120 and the respective dimensions B1 and B2. In addition, the calorific value Qc and Qe can also be adjusted by the frequency f of the alternating current.
更具體而言,金屬帶板S的寬度方向中央部之發熱量Qc,除了上述的各量以外,還可以使用金屬帶板S的板寬W、板厚t、和導體構件110相向之部分的比阻抗ρ1、和導體構件120相向之部分的比阻抗ρ2,利用以下之式(1)來計算。More specifically, the calorific value Qc of the center portion in the width direction of the metal strip plate S, in addition to the above-mentioned quantities, can also be used is the plate width W, plate thickness t, and the portion of the metal strip plate S facing the conductor member 110. The specific impedance ρ1 and the specific impedance ρ2 of the portion facing the conductive member 120 are calculated using the following equation (1).
[數式1] [Formula 1]
另一方面,金屬帶板S的寬度方向端部SE之發熱量Qe(兩側的總和),除了上述的各量以外,還可以使用金屬帶板S的寬度方向端部SE的比阻抗ρe,利用以下之式(2)來計算。On the other hand, the calorific value Qe (sum of both sides) of the width direction end SE of the metal strip plate S can be calculated by using, in addition to the above-mentioned quantities, the specific impedance ρe of the width direction end SE of the metal strip plate S. Calculate using the following equation (2).
[數式2] [Formula 2]
金屬帶板S的寬度方向中央部之發熱量Qc與寬度方向端部SE之發熱量Qe之比值,根據上述之式(1)以及式(2),成為以下之式(3)。The ratio of the calorific value Qc of the widthwise center portion of the metal strip plate S to the calorific value Qe of the widthwise end portion SE becomes the following formula (3) based on the above-mentioned formulas (1) and (2).
[數式3] [Formula 3]
從上述之式(3)探討用於抑制金屬帶板S的寬度方向中央部之溫度上升並集中地加熱寬度方向端部SE之條件。在式(3)中若設定為:ρ1=ρ2=ρc時,即成為以下之式(4)。The conditions for suppressing the temperature rise in the widthwise central portion of the metal strip S and intensively heating the widthwise end SE will be discussed based on the above equation (3). When formula (3) is set to: ρ1=ρ2=ρc, it becomes the following formula (4).
[數式4] [Formula 4]
在此,使用金屬帶板S的比重γ、寬度方向中央部以及寬度方向端部SE的各自的比熱Cpc、Cpe、各自的升溫量ΔTc、ΔTe、以及導體構件的平均尺寸B=(B1+B2)/2,可將發熱量Qc、Qe表示為以下之式(5)、(6)。若將式(5)、(6)代入式(4)並整理後,即成為式(7)以及式(8)。Here, the specific gravity γ of the metal strip S, the respective specific heats Cpc and Cpe of the widthwise central portion and the widthwise end SE, the respective temperature rise amounts ΔTc and ΔTe, and the average size of the conductor member B = (B1 + B2 )/2, the calorific values Qc and Qe can be expressed as the following formulas (5) and (6). If equations (5) and (6) are substituted into equation (4) and sorted, they become equations (7) and (8).
[數式5] [Formula 5]
在上述之式(8)中,設為B=0.1m、D=0.07m,且在既將金屬帶板S的寬度方向中央部之升溫量ΔTc抑制在10℃,並且將寬度方向端部SE的ΔTe設為500℃的情況下,代入與各自的升溫量相應之比熱Cpc、Cpe與比阻抗ρc、ρe後,即可如下地求得適當的距離L。再者,為了因應於條件來設定適當的距離L,感應加熱裝置100的連接構件131、132亦可包含可使導體構件110、120的至少任一者在金屬帶板S的過板方向上移動之可動部。作為本揭示的可動部之一例,亦可使用圖12以及圖13所示的可動部150。此可動部150是設於分別連接導體構件110、120之連接構件131、132(在圖12以及圖13中僅記載連接構件131)之複數個螺栓孔。複數個螺栓孔是在過板方向上隔著間隔設置於連接構件131、132。可以藉由變更導體構件110、120的安裝位置,具體來說是變更由螺栓152所形成之導體構件110、120的安裝位置,來變更導體構件110、120間的距離。例如,當將導體構件110、120從圖12所示之位置移動至圖13所示之位置時,導體構件110、120間的距離即從距離L1拉長至距離L2。再者,在變更導體構件110、120的安裝位置時,藉由將滾輪(roller)(圖12中以二點鏈線表示之構件)等配置於導體構件110、120之下,導體構件110、120的移動即變得簡單。 又,作為本揭示之可動部的其他的例子,亦可使用圖14A以及圖15所示之可動部160。此可動部160是構成分別連接導體構件110、120之連接構件131、132(在圖12以及圖13中僅記載連接構件131)的伸縮部。此伸縮部是例如以編織金屬線等之可撓導體等構成。又,如圖15所示,伸縮部構成連接構件131、132的各個的過板方向之中央部。具體而言,在連接構件131、132的和導體構件110、120連接之板部131A、132A之間銜接。又,如圖14B所示,伸縮部往和金屬帶板S側相反側彎曲成山的形狀。如圖15所示,藉由此已彎曲之伸縮部伸縮,導體構件110、120的過板方向的位置會移動。再者,在變更導體構件110、120的過板方向的位置時,藉由將滾輪等配置於導體構件110、120之下,導體構件110、120之移動即變得簡單。又,亦可將構成伸縮部之可撓導體做成水冷纜線。 In the above formula (8), it is assumed that B=0.1m and D=0.07m, and the temperature rise amount ΔTc of the widthwise central portion of the metal strip plate S is suppressed to 10°C, and the widthwise end SE is When ΔTe is set to 500°C, by substituting the specific heats Cpc and Cpe and the specific impedances ρc and ρe corresponding to the respective temperature rise amounts, the appropriate distance L can be obtained as follows. Furthermore, in order to set the appropriate distance L according to the conditions, the connecting members 131 and 132 of the induction heating device 100 may also include a device that allows at least one of the conductive members 110 and 120 to move in the passing direction of the metal strip plate S. The movable part. As an example of the movable part of the present disclosure, the movable part 150 shown in FIGS. 12 and 13 may also be used. This movable part 150 is a plurality of bolt holes provided in the connecting members 131 and 132 respectively connecting the conductor members 110 and 120 (only the connecting member 131 is shown in FIGS. 12 and 13 ). A plurality of bolt holes are provided in the connecting members 131 and 132 at intervals in the plate-passing direction. The distance between the conductor members 110 and 120 can be changed by changing the installation position of the conductor members 110 and 120, specifically, changing the installation position of the conductor members 110 and 120 formed by the bolts 152. For example, when the conductive members 110 and 120 are moved from the position shown in FIG. 12 to the position shown in FIG. 13 , the distance between the conductive members 110 and 120 is lengthened from the distance L1 to the distance L2. Furthermore, when the installation positions of the conductor members 110 and 120 are changed, a roller (a member represented by a two-dot chain line in FIG. 12 ) or the like is arranged under the conductor members 110 and 120 . Moving 120 becomes easy. In addition, as another example of the movable part of the present disclosure, the movable part 160 shown in FIG. 14A and FIG. 15 can also be used. This movable part 160 is an expansion and contraction part constituting the connection members 131 and 132 (only the connection member 131 is shown in FIGS. 12 and 13 ) that connect the conductor members 110 and 120 respectively. This elastic part is made of, for example, a flexible conductor such as a braided metal wire. Moreover, as shown in FIG. 15 , the telescopic portion constitutes the center portion of each of the connecting members 131 and 132 in the plate-passing direction. Specifically, the plate portions 131A and 132A of the connection members 131 and 132 connected to the conductor members 110 and 120 are connected. Furthermore, as shown in FIG. 14B , the telescopic portion is bent into a mountain shape toward the side opposite to the S side of the metal strip plate. As shown in FIG. 15 , when the bent telescopic portion expands and contracts, the positions of the conductor members 110 and 120 in the plate-crossing direction move. Furthermore, when changing the positions of the conductor members 110 and 120 in the board-passing direction, the movement of the conductor members 110 and 120 becomes simple by arranging rollers and the like under the conductor members 110 and 120 . Furthermore, the flexible conductor constituting the telescopic portion can also be used as a water-cooled cable.
[數式6] [Formula 6]
又,關於交流電流的頻率f[kHz],在本揭示發明人們所實施之解析的結果中,將投入電力的70%貢獻於升溫之從邊緣起算的範圍D[mm],以和感應電流I之關係來表示為例如以下之式(9)。Furthermore, regarding the frequency f [kHz] of the alternating current, according to the results of the analysis carried out by the inventors of the present disclosure, the range D [mm] from the edge that contributes 70% of the input power to the temperature rise is equal to the induced current I The relationship is expressed as, for example, the following formula (9).
[數式7] [Formula 7]
根據如上述之本揭示的第1實施形態的構成,金屬帶板S的寬度方向的整體被加熱之期間,僅在通過感應加熱裝置100的導體構件110、120之下(或上)的期間。並且,在導體構件110、120之間,加熱範圍被限定於金屬帶板S的寬度方向端部SE。藉此,可以節省投入電力,並避免對金屬組織的不必要的影響。亦即,在本實施形態中,可以有效率地加熱金屬帶板S的寬度方向端部SE,防止冷軋延時等之金屬帶板S的端部龜裂。又,在上述之構成中,並無必須接近於金屬帶板S的加熱部位即寬度方向端部SE來配置之構件,且因為由在通過導體構件110、120之下(或上)的期間產生之感應電流所形成的環繞電流,所以對於金屬帶板S的寬度方向的蛇行或板寬、板厚的變更,可以在不變更構件的配置的情形下來對應,又,即使在金屬帶板S產生有形狀不良的情況下仍可加熱。According to the structure of the first embodiment disclosed above, the entire width direction of the metal strip S is heated only while passing under (or above) the conductor members 110 and 120 of the induction heating device 100 . Furthermore, the heating range is limited to the width direction end SE of the metal strip S between the conductor members 110 and 120 . In this way, the input power can be saved and unnecessary impact on the metal structure can be avoided. That is, in this embodiment, it is possible to efficiently heat the width direction end SE of the metal strip S and prevent the end portion SE of the metal strip S from being cracked during cold rolling or the like. Furthermore, in the above-mentioned structure, there is no member that must be disposed close to the width direction end SE, which is the heating portion of the metal strip plate S, and because it is generated while passing under (or above) the conductor members 110 and 120 Because of the surrounding current formed by the induced current, it is possible to cope with meandering in the width direction of the metal strip plate S or changes in plate width and thickness without changing the arrangement of the components. In addition, even if the metal strip plate S occurs It can still be heated even if the shape is bad.
在此,金屬帶板的端部龜裂是例如在熱軋延步驟之後的酸洗步驟、或冷軋延步驟中發生。從而,上述之感應加熱裝置100亦可例如在包含金屬帶板S的酸洗裝置500(參照圖20)之加工設備中配置在酸洗裝置500的前段,亦可在包含金屬帶板S的冷軋延裝置510(參照圖21)之加工設備中配置在冷軋延裝置510的前段。又,金屬帶板的端部龜裂例如在熔融金屬鍍敷步驟也會發生。從而,上述之感應加熱裝置100亦可在包含例如圖22所示之鍍敷槽520、擦拭裝置522與合金化加熱裝置524之加工設備中,配置在擦拭裝置522與合金化加熱裝置524之間,前述鍍敷槽520供熔融金屬M(作為一例為熔融鋅)貯留,前述擦拭裝置522朝附著有熔融金屬M之金屬帶板S噴附氣體(例如空氣),前述合金化加熱裝置524藉由加熱而將已附著於金屬帶板S之熔融金屬M升溫至合金化溫度並保持溫度來使其合金化。Here, end cracks of the metal strip occur, for example, in the pickling step after the hot rolling step or in the cold rolling step. Therefore, the above-mentioned induction heating device 100 can also be arranged in the front stage of the pickling device 500 (see FIG. 20 ) including the metal strip plate S, for example, or in the cold processing equipment including the metal strip plate S. The rolling device 510 (see FIG. 21 ) is disposed in the front stage of the cold rolling device 510 in the processing equipment. In addition, cracks at the end portions of the metal strip may occur, for example, during the molten metal plating step. Therefore, the above-mentioned induction heating device 100 can also be disposed between the wiping device 522 and the alloying heating device 524 in a processing equipment including a plating tank 520, a wiping device 522 and an alloying heating device 524 as shown in FIG. 22 . The aforementioned plating tank 520 stores molten metal M (for example, molten zinc), the aforementioned wiping device 522 sprays gas (for example, air) toward the metal strip S attached to the molten metal M, and the aforementioned alloying heating device 524 The molten metal M attached to the metal strip S is heated to an alloying temperature and maintained at the temperature to alloy it.
(第2實施形態) 圖4是本揭示之第2實施形態的金屬帶板的感應加熱裝置的平面圖。如圖示,本實施形態之感應加熱裝置200以並聯電路構成,前述並聯電路包含:形成1次閉迴路101A之導體構件110A、120A以及連接構件131A、232A;形成1次閉迴路101B之導體構件110B、120B及連接構件131B、232B;及交流電源240。1次閉迴路101A、101B在金屬帶板S的過板方向(圖4中以箭頭PD顯示之方向)上相鄰配置。在1次閉迴路101A、101B的各個迴路中,導體構件110A、110B以及導體構件120A、120B的構成分別與上述之第1實施形態中的導體構件110、120相同。構成1次閉迴路101A的導體構件120A、與構成1次閉迴路101B的導體構件110B在金屬帶板S的過板方向相互相鄰而配置並流通同相的電流。 (Second Embodiment) 4 is a plan view of an induction heating device for a metal strip according to a second embodiment of the present disclosure. As shown in the figure, the induction heating device 200 of this embodiment is composed of a parallel circuit. The parallel circuit includes: conductor members 110A and 120A and connecting members 131A and 232A forming a primary closed circuit 101A; and a conductor member forming a primary closed circuit 101B. 110B, 120B and connecting members 131B, 232B; and AC power supply 240. The primary closed circuits 101A, 101B are adjacently arranged in the direction of the metal strip plate S (the direction shown by arrow PD in FIG. 4). In each of the primary closed circuits 101A and 101B, the conductor members 110A and 110B and the conductor members 120A and 120B have the same configurations as the conductor members 110 and 120 in the first embodiment, respectively. The conductor member 120A constituting the primary closed circuit 101A and the conductor member 110B constituting the primary closed circuit 101B are arranged adjacent to each other in the passing direction of the metal strip plate S, and currents in the same phase flow therethrough.
連接構件131A、131B於平面視角下,是分別在從金屬帶板S的寬度方向端部SE分開了的位置上將導體構件110A、120A以及導體構件110B、120B相互連接而形成1次閉迴路101A、101B。連接構件232A、232B是分別在從金屬帶板S的寬度方向端部SE分開了距離E的位置上,將導體構件110A、120A以及導體構件110B、120B相互連接而形成1次閉迴路101A、101B,並且將1次閉迴路101A、101B並聯連接於交流電源240。交流電源240以讓同相的交流電流流通於在金屬帶板S的過板方向上相鄰之導體構件亦即導體構件120A及導體構件110B的方式連接於1次閉迴路101A、101B。The connection members 131A and 131B connect the conductor members 110A and 120A and the conductor members 110B and 120B to each other at positions separated from the width direction end SE of the metal strip plate S in a plan view to form a primary closed circuit 101A. ,101B. The connection members 232A and 232B connect the conductor members 110A and 120A and the conductor members 110B and 120B to each other at positions separated by a distance E from the width direction end SE of the metal strip plate S to form primary closed circuits 101A and 101B. , and the primary closed circuits 101A and 101B are connected in parallel to the AC power supply 240 . The AC power supply 240 is connected to the primary closed circuits 101A and 101B so that the same-phase AC current flows through the conductor members 120A and 110B that are adjacent conductor members in the sheet-passing direction of the metal strip plate S.
根據如上述之本揭示的第2實施形態之構成,不但能夠得到和第1實施形態同樣的效果,還可以設定適當的距離L作為1次閉迴路101A、101B之總和。藉此,將1次閉迴路101A、101B並聯連接之情況是可以令各自的1次閉迴路的電感,相較於以單一的1次閉迴路來設定距離L之情況為至一半左右。又,藉由使同相的交流電流流通於相互相鄰之導體構件120A以及導體構件110B,在各個導體構件的周圍產生之磁通會成為相同方向,磁通變得易於集中在金屬帶板S。 具體而言,在將由1組導體構件110A、120A所構成之1次閉迴路101A(電感L1、阻抗Z1)、與由另1組導體構件110B、120B所構成之1次閉迴路101B(電感L2、阻抗Z2)並聯連接的情況下,並聯的合成電感L可利用下式(10)來求出。 L=L1×L2/L1+L2…(10) According to the structure of the second embodiment disclosed above, not only the same effect as the first embodiment can be obtained, but also an appropriate distance L can be set as the sum of the primary closed loops 101A and 101B. Therefore, when the primary closed circuits 101A and 101B are connected in parallel, the inductance of each primary closed circuit can be reduced to about half compared to the case where the distance L is set with a single primary closed circuit. In addition, by causing the same-phase alternating current to flow through the mutually adjacent conductor members 120A and 110B, the magnetic flux generated around each conductor member becomes the same direction, and the magnetic flux becomes easier to concentrate on the metal strip plate S. Specifically, primary closed circuit 101A (inductor L1, impedance Z1) composed of one set of conductor members 110A and 120A, and primary closed circuit 101B (inductor L2) composed of another set of conductor members 110B, 120B. , impedance Z2) are connected in parallel, the parallel combined inductance L can be obtained using the following equation (10). L=L1×L2/L1+L2…(10)
通常,若並聯連接時,電感以及阻抗即可以變小。假如電感L1與電感L2幾乎相等,根據上式(10),電感會成為約一半。 特別是在金屬帶板S(通常為較薄的材料)的過板速度較快,無法充分取得加熱時間的情況下,使設置之1組導體構件的分開距離變長,會讓電感、阻抗變大,且高電壓化等會讓電源的負擔變大,而出現設備成本之增大或安全上之問題。 若並聯化,即使必要分開長度較長仍然可以讓電感變小,因此可以做到電源負載的減輕、解決伴隨於高電壓化之安全上的課題。 即使不拉長分開距離而投入大電力,由於電流可被分流,所以可以將1組導體構件的發熱減輕而提升效率。 又,可如以下所示地提升電流的共振頻率f。 Usually, if connected in parallel, the inductance and impedance can be reduced. If the inductance L1 and the inductance L2 are almost equal, according to the above equation (10), the inductance will be about half. Especially when the metal strip plate S (usually a thin material) passes through the plate at a high speed and the heating time cannot be fully obtained, making the separation distance of a set of conductor members longer will cause the inductance and impedance to change. Larger and higher voltages will increase the burden on the power supply, resulting in increased equipment costs or safety issues. By connecting them in parallel, the inductance can be made smaller even if the separation length is long. Therefore, the power supply load can be reduced and safety issues associated with higher voltages can be solved. Even if a large amount of electric power is input without extending the separation distance, the current can be divided, so the heat generation of one set of conductor members can be reduced and the efficiency can be improved. Furthermore, the resonance frequency f of the current can be increased as shown below.
[數式8] 再者,L是電感[H],C是電容容量[F]。 當共振頻率提升時,可以將金屬帶板S的寬度方向端部SE之加熱範圍縮窄,而可以有效地加熱有限的範圍之寬度方向端部SE。 [Formula 8] Furthermore, L is the inductance [H], and C is the capacitance [F]. When the resonant frequency increases, the heating range of the width-direction end SE of the metal strip plate S can be narrowed, and a limited range of the width-direction end SE can be effectively heated.
圖5是本揭示之第2實施形態的另一例之金屬帶板的感應加熱裝置的平面圖。作為與上述的例子之差異,在所圖示之例中,連接構件232C、232D將1次閉迴路101A、101B串聯連接於交流電源240。同相的交流電流流通於在金屬帶板S的過板方向上相鄰之導體構件120A及導體構件110B之點是同樣的。藉由串聯連接1次閉迴路101A、101B,可以將在各個1次閉迴路流動之電流的大小設成相同。又,可以藉由加大電感而變更振盪條件。 具體而言,在已串聯連接的情況下,合成的電感L為下式。 L=L1+L2…(12) 串聯連接使電感變大,可降低頻率。 由於若頻率減低時,可以讓電流的穿透深度δ變深,所以特別是在板厚較厚的材料之情況下,可以讓厚度方向的加熱範圍擴大,並且也擴大金屬帶板S的從寬度方向端部SE起的加熱範圍。 5 is a plan view of an induction heating device for a metal strip according to another example of the second embodiment of the present disclosure. As a difference from the above-described example, in the illustrated example, the connection members 232C and 232D connect the primary closed circuits 101A and 101B in series to the AC power supply 240 . The same-phase alternating current flows through the conductor member 120A and the conductor member 110B adjacent to each other in the sheet-passing direction of the metal strip plate S at the same point. By connecting primary closed circuits 101A and 101B in series, the magnitude of the current flowing in each primary closed circuit can be made equal. In addition, the oscillation conditions can be changed by increasing the inductance. Specifically, when connected in series, the combined inductance L is the following equation. L=L1+L2…(12) Series connection makes the inductor larger, which reduces the frequency. If the frequency is reduced, the current penetration depth δ can be made deeper, so especially in the case of thicker materials, the heating range in the thickness direction can be expanded, and the width of the metal strip S can also be expanded. The heating range from the direction end SE.
[數式9] 再者,ρ為比阻抗[μΩcm],μr為相對磁導率,f為頻率[Hz]。 又,由於在導體構件流動之電流全部相同,即使阻抗不同,每個閉迴路的邊緣加熱量仍然可以形成為相同。 如上述,只要可以自由地進行並聯/串聯連接,即具有以下優點:可因應於負載而合宜地以比較自由的方式來改變所需要的頻率、電流/電力分配、金屬帶板的寬度方向端部之加熱範圍,即使未準備複數個個別的設備亦無妨。 一般而言,在板厚較薄、過板速度較快且比阻抗的溫度變化較小的情況(SUS304等)下,由於在加熱前後,阻抗的變化較小且電力/電流量較大,所以所期望的是可以讓導體的發熱變小之並聯連接,而比阻抗的溫度變化較大之普通鋼等,且在加熱前後有阻抗差之情況、或過板速度較慢的厚鋼材之情況,所期望的則是電路間的電流量成為相同、電感較大且在低頻側的加熱較容易之串聯連接。 [Formula 9] Furthermore, ρ is specific impedance [μΩcm], μr is relative magnetic permeability, and f is frequency [Hz]. In addition, since the currents flowing through the conductive members are all the same, even if the impedances are different, the edge heating amount of each closed loop can still be formed to be the same. As mentioned above, as long as the parallel/series connection can be freely performed, it has the following advantages: the required frequency, current/power distribution, and width direction ends of the metal strip can be changed in a relatively free manner according to the load. It does not matter if you do not prepare multiple individual devices for the heating range. Generally speaking, when the plate thickness is thin, the plate passing speed is fast, and the temperature change of the specific impedance is small (SUS304, etc.), since the change in impedance is small and the amount of power/current is large before and after heating, so What is desired is a parallel connection that can reduce the heat generation of the conductor. In the case of ordinary steel, which has a large temperature change in specific impedance, and there is a difference in impedance before and after heating, or in the case of thick steel with a slow passing speed, What is desired is a series connection in which the current amount between the circuits is the same, the inductance is large, and heating on the low-frequency side is easier.
感應加熱裝置200可用手動方式切換1次閉迴路101A、101B之串聯連接以及並聯連接,但亦可包含用自動方式來相互地切換之切換電路。切換電路包含例如將交流電源240選擇性地連接到圖4所示之連接構件232A、232B或圖5所示之連接構件232C、232D中任一者之開關(switch)。作為一例,亦可使用圖18及圖19所示之開關201A以及開關201B來切換並聯連接(圖18的連接)與串聯連接(圖19的連接)。在圖18中,連接於導體構件120A之開關201A的接點A和導體構件110B的接點B短路。又,使已連接於連接構件232A之開關201B的接點D和已連接於連接構件232B之接點E短路。藉此,將1次閉迴路101A與1次閉迴路101B並聯連接。另一方面,在圖19中,將已連接於導體構件120A之開關201A的接點A從導體構件110B的接點B釋放。然後,藉由使已連接於連接構件232A之開關201B的接點D與已連接於導體構件110B之接點C短路,而將1次閉迴路101A與1次閉迴路101B串聯連接。The induction heating device 200 can manually switch between the series connection and the parallel connection of the primary closed circuits 101A and 101B, but may also include a switching circuit that switches between each other automatically. The switching circuit includes, for example, a switch that selectively connects the AC power supply 240 to any one of the connecting members 232A, 232B shown in FIG. 4 or the connecting members 232C, 232D shown in FIG. 5 . As an example, switches 201A and 201B shown in FIGS. 18 and 19 may be used to switch between parallel connection (the connection in FIG. 18 ) and series connection (the connection in FIG. 19 ). In FIG. 18 , the contact point A of the switch 201A connected to the conductor member 120A and the contact point B of the conductor member 110B are short-circuited. Furthermore, the contact point D of the switch 201B connected to the connection member 232A and the contact point E connected to the connection member 232B are short-circuited. Thereby, the primary closed circuit 101A and the primary closed circuit 101B are connected in parallel. On the other hand, in FIG. 19 , the contact point A of the switch 201A connected to the conductive member 120A is released from the contact point B of the conductive member 110B. Then, the primary closed circuit 101A and the primary closed circuit 101B are connected in series by short-circuiting the contact point D of the switch 201B connected to the connection member 232A and the contact point C connected to the conductive member 110B.
(第3實施形態) 圖6A以及圖6B是用於說明本揭示之第3實施形態的剖面圖。如圖6A所示,在本實施形態中,可在構成導體構件之板部111、112、121、122的與金屬帶板S為相反側之面配置磁性體芯材351、352、361、362。藉此,相較於如圖6B所示地未配置磁性體芯材的情況,原本在構成導體構件之板部111、112、121、122的與金屬帶板S為相反側呈自由地環繞的磁通集中通過磁導率較高之磁性體芯材351、352、361、362,藉此磁通變得易於集中進入導體構件111、112、121、122的正下方的金屬帶板S,而可以更有效地將金屬帶板S感應加熱。在本實施形態中,因為可以藉由如上述的磁性體芯材的配置,使藉由在導體中流動的電流所產生之磁通集中於導體構件的板部111、112、121、122,所以可以加大與金屬帶板S之間隙,而可以對應例如金屬帶板S的厚度方向之波浪形狀。又,在本實施形態中,因為可藉由磁性體芯材的配置而減少朝向導體構件的背側(未與金屬帶板S相向之側)之漏洩磁通,所以可以防止例如支撐導體構件之構件或設置於周邊之機器等被加熱之情形。 磁性體芯材只要確保不會磁飽和之適當的截面積即可,例如在使用高頻的情況下,使用即使飽和磁通密度小,截面積變小就夠用之鐵氧體芯材即可,又,若是相對低頻,只要使用飽和磁通密度較大之積層的電磁鋼板、非晶質(amorphous)等的強磁性體即可。又,若顧慮發熱的情況,則宜適當地設置水冷銅板等冷卻裝置來進行磁性體芯材的冷卻。 (Third Embodiment) 6A and 6B are cross-sectional views for explaining the third embodiment of the present disclosure. As shown in FIG. 6A , in this embodiment, magnetic core materials 351 , 352 , 361 , and 362 can be disposed on the opposite side to the metal strip plate S of the plate portions 111 , 112 , 121 , and 122 constituting the conductive member. . Thereby, compared with the case where the magnetic core material is not arranged as shown in FIG. 6B , the plate portions 111 , 112 , 121 , and 122 that originally constitute the conductor member are freely surrounding the side opposite to the metal strip plate S. The magnetic flux concentrates through the magnetic core materials 351, 352, 361, 362 with high magnetic permeability, so that the magnetic flux becomes easy to concentrate into the metal strip plate S directly below the conductor members 111, 112, 121, 122, and The metal strip plate S can be induction heated more efficiently. In this embodiment, by arranging the magnetic core material as described above, the magnetic flux generated by the current flowing in the conductor can be concentrated on the plate portions 111, 112, 121, and 122 of the conductor member. The gap between the metal strip S and the metal strip S can be increased, and it can correspond to the corrugated shape of the metal strip S in the thickness direction, for example. Furthermore, in this embodiment, the leakage magnetic flux toward the back side of the conductor member (the side not facing the metal strip plate S) can be reduced by the arrangement of the magnetic core material. Therefore, for example, it is possible to prevent the conductor member from supporting the conductor member. Components or peripheral machines are heated. The magnetic core material only needs to ensure an appropriate cross-sectional area that does not cause magnetic saturation. For example, when using high frequencies, it is sufficient to use a ferrite core material that has a small cross-sectional area even if the saturation magnetic flux density is small. , and if the frequency is relatively low, it is enough to use a laminated electromagnetic steel plate with a large saturation magnetic flux density or a ferromagnetic material such as amorphous (amorphous). Furthermore, if heat generation is a concern, it is advisable to appropriately install a cooling device such as a water-cooled copper plate to cool the magnetic core material.
圖7A以及圖7B是說明本揭示之第3實施形態的另一例的剖面圖。圖7B雖然僅由構成導體構件之板部111A、111B、112A、112B、121A、121B、122A、122B來構成,但在成為單獨的閉迴路之圖6B的情況下,因為磁通在金屬帶板S的行進方向(與過板方向相同)之前後方向上自由地放射,所以磁通會難以集中。相對於此,在第3實施形態的另一例中,在同相的電流流至2個閉迴路的中央部的板部111A、111B、112A、112B的情況下,在板部111A、111B、112A、112B產生之磁通不會因為在板部111A、112A、121B、122B產生之逆向的磁通,而在金屬帶板S的長度方向(與過板方向相同)上朝前後方向飛行的範圍被縮窄,磁通約束在板部111A、111B、112A、112B的附近,結果可以使感應電流效率良好地集中。如圖7A所示,在本實施形態中,若在構成導體構件之板部111A、111B、112A、112B、121A、121B、122A、122B的與金屬帶板S為相反側之面配置磁性體芯材351、352、361、362、371、372,即可以更有效率地集中感應電流。在此,磁性體芯材371、372只要彼此接近,就算在長度方向/寬度方向中途被分割也沒關係,但宜為與在金屬帶板S的過板方向上相鄰之導體構件的2個板部121A、111B以及板部122A、122B的每一個共同地配置。亦即,磁性體芯材371覆蓋導體構件的板部121A、111B之雙方的背側,磁性體芯材372覆蓋導體構件的板部122A、112B之雙方的背側。藉此,即使是例如上述之圖4以及圖5的例子般將複數個1次閉迴路在金屬帶板S的過板方向上相鄰配置的情況,相較於如圖7B所示般沒有配置磁性體芯材的情況,磁通也會變得較易於進入金屬帶板S。藉此,可以更有效地將金屬帶板S感應加熱。在可以加大導體構件與金屬帶板S的間隙之點、以及可減少漏洩磁通之點上,也與上述的例子同樣。7A and 7B are cross-sectional views illustrating another example of the third embodiment of the present disclosure. Although FIG. 7B is composed only of the plate portions 111A, 111B, 112A, 112B, 121A, 121B, 122A, and 122B that constitute the conductor member, in the case of FIG. The traveling direction of S (same as the direction through the plate) radiates freely in the front and rear directions, so the magnetic flux will be difficult to concentrate. On the other hand, in another example of the third embodiment, when the same-phase current flows to the plate portions 111A, 111B, 112A, and 112B in the center portions of the two closed circuits, the plate portions 111A, 111B, 112A, The magnetic flux generated by 112B will not fly forward and backward in the longitudinal direction of the metal strip plate S (the same as the plate passing direction) due to the reverse magnetic flux generated in the plate portions 111A, 112A, 121B, and 122B. Narrow, the magnetic flux is confined near the plate portions 111A, 111B, 112A, and 112B. As a result, the induced current can be efficiently concentrated. As shown in FIG. 7A , in this embodiment, a magnetic core is disposed on the opposite side to the metal strip plate S of the plate portions 111A, 111B, 112A, 112B, 121A, 121B, 122A, 122B constituting the conductor member. Materials 351, 352, 361, 362, 371, and 372 can concentrate the induced current more efficiently. Here, as long as the magnetic core materials 371 and 372 are close to each other, it does not matter even if they are divided midway in the longitudinal direction/width direction. However, it is preferable that they be two plates of conductive members adjacent to each other in the passing direction of the metal strip plate S. The portions 121A and 111B and the plate portions 122A and 122B are each arranged in common. That is, the magnetic core material 371 covers the back sides of both the plate portions 121A and 111B of the conductor member, and the magnetic core material 372 covers the back sides of both the plate portions 122A and 112B of the conductor member. Therefore, even in the case where a plurality of primary closed circuits are arranged adjacent to each other in the passing direction of the metal strip plate S, as in the examples of FIGS. 4 and 5 described above, compared to the case where no primary closed loops are arranged as shown in FIG. 7B In the case of a magnetic core material, magnetic flux will also become easier to enter the metal strip S. Thereby, the metal strip plate S can be induction heated more effectively. It is also the same as the above example in that the gap between the conductor member and the metal strip plate S can be increased and the leakage magnetic flux can be reduced.
(第4實施形態) 圖8A是本揭示之第4實施形態的金屬帶板的感應加熱裝置的平面圖,圖9是相當於圖8A所示之感應加熱裝置的9-9線箭頭視圖的側面圖。如圖示,本實施形態之感應加熱裝置400包含形成1次閉迴路101之導體構件110、120以及連接構件132、431、與交流電源140。作為和上述之第1實施形態的差異,在本實施形態中,是連接構件431以及132在金屬帶板S的端部側,以在金屬帶板S的厚度方向上不干涉到金屬帶板S的方式配置於上表面或下表面。具體來說,如例如圖9之例所示,以連接構件431分別在金屬帶板S的正面側連接導體構件的板部111、121,在背面側連接將導體構件的板部112、122,在金屬帶板S的正面側與背面側之間則不連接導體構件。 (Fourth Embodiment) 8A is a plan view of an induction heating device for a metal strip according to a fourth embodiment of the present disclosure, and FIG. 9 is a side view corresponding to the arrow 9-9 view of the induction heating device shown in FIG. 8A . As shown in the figure, the induction heating device 400 of this embodiment includes conductor members 110 and 120 and connection members 132 and 431 forming a primary closed circuit 101, and an AC power supply 140. As a difference from the above-described first embodiment, in this embodiment, the connecting members 431 and 132 are on the end side of the metal strip plate S so as not to interfere with the metal strip plate S in the thickness direction of the metal strip plate S. configured on the upper or lower surface. Specifically, as shown in the example of FIG. 9 , the plate portions 111 and 121 of the conductor member are connected to the front side of the metal strip plate S by the connecting member 431 , and the plate portions 112 and 122 of the conductor member are connected to the back side. No conductive member is connected between the front side and the back side of the metal strip plate S.
根據上述之本揭示的第4實施形態,除了可得到和第1實施形態同樣的效果以外,還有在需要從金屬帶板S的搬送產線拆下感應加熱裝置400來進行維護的情況下,也只要將其從圖中下方(電源側)拉出即可,就算在操作中也毋須停止/切斷搬送中的金屬帶板S,可以容易地實施維護。According to the fourth embodiment disclosed above, in addition to obtaining the same effects as the first embodiment, when it is necessary to remove the induction heating device 400 from the conveyance line of the metal strip plate S for maintenance, Just pull it out from the bottom (power supply side) in the figure, and there is no need to stop/cut off the metal strip S being transported even during operation, making maintenance easy.
在前述的實施形態中,雖然是將連接構件131、132從金屬帶板S的寬度方向端部SE分開,但本揭示不限定於此構成。亦可如圖8B所示,連接構件在平面視角下呈與金屬帶板S的寬度方向端部SE重疊(作為一例,亦可重疊有數十mm左右)。具體而言,在導體構件110、120之上以及下將連接構件配置成在平面視角下,相對於進行處理之被加熱材的最大板寬,一部分重疊於金屬帶板S的寬度方向端部SE。藉由做成此構成,可以避免連接構件與金屬帶板S的寬度方向端部之接觸。又,連接構件的寬度尺寸亦可在導體構件110、120的寬度尺寸以上。藉由設成此構成,就算金屬帶板S蛇行,也可使電流在金屬帶板S的寬度方向端部SE均等地流動。In the aforementioned embodiment, the connection members 131 and 132 are separated from the width direction end SE of the metal strip plate S, but the present disclosure is not limited to this structure. As shown in FIG. 8B , the connecting member may overlap the width direction end SE of the metal strip plate S in a plan view (as an example, the connection member may overlap by about tens of mm). Specifically, the connection members are arranged above and below the conductor members 110 and 120 so that, in a plan view, a portion overlaps the width direction end SE of the metal strip plate S with respect to the maximum plate width of the heated material to be processed. . By having this structure, it is possible to avoid contact between the connecting member and the end portion in the width direction of the metal strip plate S. In addition, the width dimension of the connecting member may be larger than the width dimension of the conductor members 110 and 120 . By adopting this structure, even if the metal strip plate S meanders, current can be caused to flow uniformly in the width direction end SE of the metal strip plate S.
又,在前述之實施形態中,使用了薄板即金屬帶板S來作為金屬板,但本揭示不限定於此。亦可使用厚板或扁胚等厚金屬來作為金屬板。在此情況下,也可以和第1實施形態同樣地得到本揭示之效果。又,被加熱材雖然所例示的是移動中的情況,但在靜止狀態下也可以適用。在圖17中圖示有以本揭示的感應加熱裝置(參照圖16)使電流於厚金屬流動之狀態下的厚金屬側面的電流的流動。Furthermore, in the aforementioned embodiment, the metal strip S which is a thin plate is used as the metal plate, but the present disclosure is not limited thereto. Thick metals such as thick plates or flat blanks can also be used as metal plates. In this case, the effects of the present disclosure can be obtained similarly to the first embodiment. In addition, although the material to be heated is exemplified in a moving state, it can also be applied in a stationary state. FIG. 17 illustrates the flow of electric current on the side of the thick metal in a state where the electric current flows through the thick metal using the induction heating device of the present disclosure (see FIG. 16 ).
(加熱效果之驗證) 圖10及圖11是顯示用於驗證在本揭示之實施形態中對金屬帶板的寬度方向端部進行加熱之效果的解析結果的圖表。針對在上述如參照圖1至圖3而說明的感應加熱裝置,用以下的條件實施基於有限元素法之電磁場解析,計算出金屬帶板的寬度方向中央部的溫度Tc與寬度方向端部的溫度Te之比值、以及寬度方向端部的溫度(邊緣溫度)。 (Verification of heating effect) 10 and 11 are graphs showing analysis results for verifying the effect of heating the width direction end portion of the metal strip in the embodiment of the present disclosure. Regarding the induction heating device described above with reference to FIGS. 1 to 3 , electromagnetic field analysis based on the finite element method was carried out under the following conditions, and the temperature Tc of the widthwise center portion of the metal strip plate and the temperature of the widthwise end portion were calculated. Te ratio, and the temperature at the end in the width direction (edge temperature).
・金屬帶板的板寬W=1200mm ・金屬帶板的板厚t=2mm ・導體構件的寬度B=200mm ・交流電流的頻率f=10kHz ・交流電流的大小=10kA ・導體構件間之距離L= 可在200mm~600mm之間改變 ・加熱前的金屬帶板之溫度T 0=0℃ ・The plate width of the metal strip plate W=1200mm ・The plate thickness of the metal strip plate t=2mm ・The width of the conductor member B=200mm ・The frequency of the alternating current f=10kHz ・The magnitude of the alternating current=10kA ・The distance between the conductor members L = Can be changed between 200mm~600mm・The temperature of the metal strip before heating T 0 =0℃
在上述之解析中,於將導體構件間之距離L設為最小(100mm)的情況下,導體構件的寬度B與距離L之比值L/B為1。如圖10之圖表所示,在比值L/B為1以上之範圍下,金屬帶板的寬度方向端部的溫度Te會遠高於中央部的溫度Tc。另一方面,如圖11的圖表所示,在比值L/B為1以上且2以下的範圍內,邊緣溫度較低,但若比值L/B超過2時,邊緣溫度會超過50℃,且隨著比值L/B變大邊緣溫度會上升。比值L/B超過2(L/B>2)之情形、與距離L超過2個導體構件之寬度總和(L>2B)之情形是相等的。在這樣的條件下,感應加熱裝置可以有效率地加熱金屬帶板的寬度方向的端部。In the above analysis, when the distance L between conductor members is set to the minimum (100 mm), the ratio L/B of the width B of the conductor members to the distance L is 1. As shown in the graph of FIG. 10 , when the ratio L/B is in a range of 1 or more, the temperature Te at the widthwise ends of the metal strip is much higher than the temperature Tc at the center. On the other hand, as shown in the graph of Fig. 11, when the ratio L/B is 1 or more and 2 or less, the edge temperature is low. However, when the ratio L/B exceeds 2, the edge temperature exceeds 50°C, and As the ratio L/B becomes larger, the edge temperature will increase. The case where the ratio L/B exceeds 2 (L/B>2) is equivalent to the case where the distance L exceeds the sum of the widths of two conductive members (L>2B). Under such conditions, the induction heating device can efficiently heat the widthwise ends of the metal strip.
以上,雖然已一邊參照所附圖式一邊針對本揭示的較佳的實施形態來詳細地說明,但本揭示並不限定於這些例子。只要是本揭示的所屬技術領域中的本領域技術人員,在申請專利範圍所記載的技術思想之範疇內,顯然可設想得到各種變更例或修正例,關於這些變更例或修正例當然也應被理解為屬於本揭示的技術範圍。As mentioned above, the preferred embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, but the present disclosure is not limited to these examples. As long as a person skilled in the art in the technical field to which the present disclosure belongs, it is obvious that various modifications or modifications can be conceived within the scope of the technical ideas described in the patent application scope, and these modifications or modifications should of course also be considered. It is understood that it belongs to the technical scope of this disclosure.
關於以上的實施形態,進一步揭示以下的附記。Regarding the above embodiment, the following supplementary remarks are further disclosed.
(附記1) 一種金屬板的感應加熱裝置,具備: 第1導體構件,和金屬板的正面以及背面的至少其中一面相向,且在寬度方向上橫跨前述金屬板而配置; 第2導體構件,從前述第1導體構件朝前述金屬板的過板方向分開相當於第1距離,並和前述金屬板的正面以及背面的至少其中一面相向,且在寬度方向上橫跨前述金屬板而配置; 連接構件,將前述第1導體構件以及前述第2導體構件相互連接而形成1次閉迴路;及 交流電源,和前述1次閉迴路連接, 前述第1距離比前述第1導體構件以及前述第2導體構件在前述金屬板的過板方向上的尺寸之總和更大。 (Note 1) An induction heating device for metal plates, equipped with: The first conductor member faces at least one of the front and back surfaces of the metal plate and is disposed across the metal plate in the width direction; The second conductor member is spaced apart from the first conductor member by a first distance in the direction across the metal plate, faces at least one of the front and back surfaces of the metal plate, and spans the metal plate in the width direction. board and configuration; A connecting member that connects the first conductor member and the second conductor member to each other to form a primary closed circuit; and AC power supply, connected to the aforementioned primary closed loop, The first distance is larger than the sum of the dimensions of the first conductor member and the second conductor member in the direction of the metal plate passing through the metal plate.
(附記2) 如附記1記載之感應加熱裝置,其中前述第1導體構件與前述第2導體構件,和前述金屬板的相同側之面相向而配置。 (Note 2) The induction heating device according to appendix 1, wherein the first conductor member and the second conductor member are arranged facing each other with the same side surfaces of the metal plate.
(附記3) 如附記2記載之感應加熱裝置,其中前述第1導體構件與前述第2導體構件分別配置於前述金屬板的正面側以及背面側。 (Note 3) The induction heating device according to Appendix 2, wherein the first conductor member and the second conductor member are respectively arranged on the front side and the back side of the metal plate.
(附記4) 如附記1至附記3中任1項記載之金屬板的感應加熱裝置,其中藉由前述第1導體構件、前述第2導體構件以及前述連接構件而各自形成之第1以及第2之1次閉迴路在前述金屬板的過板方向上相鄰而配置, 前述交流電源使同相的交流電流流通於前述第1以及第2之1次閉迴路當中在前述金屬板的過板方向上相鄰的導體構件。 (Note 4) The induction heating device for a metal plate as described in any one of Supplementary Notes 1 to 3, wherein the first and second primary closures are each formed by the first conductor member, the second conductor member and the connecting member. The circuits are arranged adjacent to each other in the direction of passing the metal plate, The AC power supply causes the same-phase AC current to flow through the conductor members adjacent to each other in the direction of passing the metal plate in the first and second closed circuits.
(附記5) 如附記4記載之金屬板的感應加熱裝置,其更具備切換電路,前述切換電路可相互地切換前述第1以及第2之1次閉迴路的串聯連接以及並聯連接。 (Note 5) For example, the induction heating device for metal plates described in Appendix 4 further includes a switching circuit, and the switching circuit can mutually switch between the series connection and the parallel connection of the first and second closed circuits.
(附記6) 如附記1至附記5中任一項記載之金屬板的感應加熱裝置,其更具備磁性體芯材,前述磁性體芯材配置在前述第1導體構件以及前述第2導體構件的至少一個導體構件的與前述金屬板為相反側之面。 (Note 6) The induction heating device for a metal plate according to any one of Supplementary Notes 1 to Supplementary Notes 5, further comprising a magnetic core material arranged on at least one of the first conductor member and the second conductor member. The side is opposite to the aforementioned metal plate.
(附記7) 如附記1至附記6中任一項記載之金屬板的感應加熱裝置,其中前述連接構件在前述金屬板的至少寬度方向單側,以在前述金屬板的厚度方向上不干涉到前述金屬板的方式配置。 (Note 7) The induction heating device for a metal plate as described in any one of Supplementary Notes 1 to 6, wherein the connecting member is on at least one side of the metal plate in the width direction so as not to interfere with the metal plate in the thickness direction of the metal plate. mode configuration.
(附記8) 如附記1至附記7中任一項記載之金屬板的感應加熱裝置,其中前述連接構件包含可動部,前述可動部可使前述第1導體構件以及前述第2導體構件的至少一個導體構件在前述金屬板的過板方向上移動。 (Note 8) The induction heating device for metal plates as described in any one of Appendix 1 to Appendix 7, wherein the connecting member includes a movable part, and the movable part can make at least one of the first conductor member and the second conductor member in the The metal plate moves upward in the direction of the plate.
(附記9) 一種金屬板的加工設備,包含: 金屬板的酸洗裝置;及 如附記1至附記8中任一項記載之金屬板的感應加熱裝置,配置在前述酸洗裝置的前段。 (Note 9) A metal plate processing equipment, including: Pickling plants for metal plates; and The induction heating device for a metal plate as described in any one of Supplementary Notes 1 to 8 is arranged in the front stage of the aforementioned pickling device.
(附記10) 一種金屬板的加工設備,包含: 金屬板之冷軋延裝置;及 如附記1至附記8中任一項記載之金屬板的感應加熱裝置,配置在前述冷軋延裝置的前段。 (Note 10) A metal plate processing equipment, including: Cold rolling equipment for metal plates; and The induction heating device for a metal plate as described in any one of Appendix 1 to Appendix 8 is arranged in the front stage of the aforementioned cold rolling device.
(附記11) 一種金屬板的加工設備,包含: 擦拭裝置,朝附著有熔融金屬之金屬板噴附氣體; 合金化加熱裝置,藉由加熱而使附著於前述金屬板之前述熔融金屬合金化;及 如附記1至附記8中任一項記載之金屬板的感應加熱裝置,配置在前述擦拭裝置與前述合金化加熱裝置之間。 (Note 11) A metal plate processing equipment, including: Wiping device sprays gas towards the metal plate with molten metal attached; An alloying heating device that alloys the molten metal attached to the metal plate by heating; and The induction heating device for a metal plate according to any one of Appendix 1 to Appendix 8 is arranged between the wiping device and the alloying heating device.
(附記12) 一種金屬板的感應加熱方法,包含以下步驟: 對1次閉迴路流通交流電流,前述1次閉迴路是藉由第1導體構件、第2導體構件、與將前述第1導體構件以及前述第2導體構件相互連接之連接構件所形成,前述第1導體構件和前述金屬板的正面以及背面的至少其中一面相向,且在寬度方向上橫跨前述金屬板而配置,前述第2導體構件和前述金屬板的正面以及背面的至少其中一面相向,並從前述第1導體構件朝前述金屬板的過板方向分開相當於第1距離,且在寬度方向上橫跨前述金屬板而配置;及 藉由2次閉迴路通過前述金屬板的寬度方向端部而將前述金屬板的寬度方向端部感應加熱,前述2次閉迴路藉由在前述金屬板中分別和前述第1導體構件以及前述第2導體構件相向的區域產生之感應電流而形成。 (Note 12) An induction heating method for metal plates, including the following steps: An alternating current flows through a primary closed circuit, and the primary closed circuit is formed by a first conductor member, a second conductor member, and a connecting member that connects the first conductor member and the second conductor member to each other. 1. The conductive member faces at least one of the front and back surfaces of the metal plate and is arranged across the metal plate in the width direction, and the 2nd conductive member faces at least one of the front and back surfaces of the metal plate, and The first conductor member is spaced apart from the first conductor member by a first distance in the direction across the metal plate and is arranged across the metal plate in the width direction; and The width direction end of the metal plate is inductively heated by a secondary closed circuit passing through the width direction end of the metal plate, and the secondary closed circuit is connected to the first conductor member and the first conductor member in the metal plate respectively. It is formed by the induced current generated in the areas where the 2 conductive members face each other.
(附記13) 一種金屬帶板的感應加熱裝置,具備: 第1導體構件,和金屬帶板的正面或背面相向,且在寬度方向上橫跨前述金屬帶板而配置; 第2導體構件,從前述第1導體構件朝前述金屬帶板的過板方向分開相當於第1距離而定位,並和前述金屬帶板的正面或背面相向,且在寬度方向上橫跨前述金屬帶板而配置; 連接構件,在已從前述金屬帶板的寬度方向端部分開的位置上將前述第1導體構件以及前述第2導體構件相互連接而形成1次閉迴路;及 交流電源,和前述1次閉迴路連接, 前述第1距離比前述第1導體構件以及前述第2導體構件在前述金屬帶板的過板方向上的尺寸之總和更大。 (Note 13) An induction heating device for metal strip plates, equipped with: The first conductor member faces the front or back of the metal strip and is arranged across the metal strip in the width direction; The second conductor member is positioned apart from the first conductor member by a first distance in the direction across the metal strip plate, faces the front or back surface of the metal strip plate, and spans the metal strip in the width direction. Configured with boards; A connecting member that connects the first conductor member and the second conductor member to each other at a position separated from the width direction end of the metal strip plate to form a primary closed circuit; and AC power supply, connected to the aforementioned primary closed loop, The first distance is larger than the total size of the first conductor member and the second conductor member in the direction of the metal strip plate passing through the plate.
(附記14) 如附記13記載之金屬帶板的感應加熱裝置,其中藉由前述第1導體構件、前述第2導體構件以及前述連接構件而各自形成之第1以及第2之1次閉迴路在前述金屬帶板的過板方向上相鄰而配置, 前述交流電源使同相的交流電流流通於前述第1以及第2之1次閉迴路當中在前述金屬帶板的過板方向上相鄰的導體構件。 (Note 14) An induction heating device for a metal strip plate as described in Appendix 13, wherein the first and second primary closed circuits formed by the first conductor member, the second conductor member and the connecting member are in the metal strip plate. are arranged adjacent to each other in the board-passing direction, The AC power supply causes the same-phase AC current to flow through the conductor members adjacent to each other in the passing direction of the metal strip plate in the first and second primary closed circuits.
(附記15) 如附記14記載之金屬帶板的感應加熱裝置,其更具備切換電路,前述切換電路可相互地切換前述第1以及第2之1次閉迴路的串聯連接以及並聯連接。 (Note 15) For example, the induction heating device for metal strip plates described in Appendix 14 further includes a switching circuit, and the switching circuit can mutually switch between the series connection and the parallel connection of the first and second closed circuits.
(附記16) 如附記13至附記15中任1項記載之金屬帶板的感應加熱裝置,其更具備磁性體芯材,前述磁性體芯材配置在前述第1導體構件以及前述第2導體構件當中至少任一者的與前述金屬帶板為相反側之面。 (Note 16) The induction heating device for a metal strip plate according to any one of Supplementary Notes 13 to 15, further comprising a magnetic core material, and the magnetic core material is arranged on at least one of the first conductor member and the second conductor member. The side is opposite to the aforementioned metal strip plate.
(附記17) 如附記13至附記16中任一項記載之金屬帶板的感應加熱裝置,其中前述連接構件在前述金屬帶板的至少寬度方向單側,以在前述金屬帶板的厚度方向上不干涉到前述金屬帶板的方式配置。 (Note 17) The induction heating device for a metal strip as described in any one of Supplementary Notes 13 to 16, wherein the connecting member is on at least one side of the metal strip in the width direction so as not to interfere with the metal strip in the thickness direction. Metal strip configuration.
(附記18) 如附記13至附記17中任1項記載之金屬帶板的感應加熱裝置,其中前述連接構件包含可動部,前述可動部可使前述第1導體構件以及前述第2導體構件的至少任一者在前述金屬帶板的過板方向上移動。 (Note 18) The induction heating device for metal strips as described in any one of Supplementary Notes 13 to 17, wherein the connecting member includes a movable part, and the movable part can move at least one of the first conductor member and the second conductor member to The aforementioned metal strip plate moves upward in the plate-passing direction.
(附記19) 一種金屬帶板的加工設備,包含: 金屬帶板的酸洗裝置;及 如附記13至附記18中任一項記載之金屬帶板的感應加熱裝置,配置在前述酸洗裝置的前段。 (Note 19) A metal strip processing equipment, including: Pickling equipment for metal strips; and The induction heating device for metal strips as described in any one of Supplementary Notes 13 to 18 is arranged at the front stage of the aforementioned pickling device.
(附記20) 一種金屬帶板的加工設備,包含: 金屬帶板的冷軋延裝置;及 如附記13至附記18中任一項記載之金屬帶板的感應加熱裝置,配置在前述冷軋延裝置的前段。 (Note 20) A metal strip processing equipment, including: Cold rolling equipment for metal strip; and The induction heating device for the metal strip described in any one of Supplementary Notes 13 to 18 is arranged in the front stage of the cold rolling device.
(附記21) 一種金屬帶板的感應加熱方法,包含以下步驟: 對1次閉迴路流通交流電流,前述1次閉迴路是藉由第1導體構件、第2導體構件、與在已從金屬帶板的寬度方向端部分開的位置上將前述第1導體構件以及前述第2導體構件相互連接之連接構件所形成,前述第1導體構件和前述金屬帶板的正面或背面相向,且在寬度方向上橫跨前述金屬帶板而配置,前述第2導體構件和前述金屬帶板的正面或背面相向,並從前述第1導體構件朝前述金屬帶板的過板方向分開相當於第1距離,且在寬度方向上橫跨前述金屬帶板而配置;及 藉由2次閉迴路通過前述金屬帶板的寬度方向端部而將前述金屬帶板的寬度方向端部感應加熱,前述2次閉迴路藉由在前述金屬帶板中分別和前述第1導體構件以及前述第2導體構件相向的區域產生之感應電流而形成。 (Note 21) An induction heating method for metal strip plates, including the following steps: An alternating current flows through a primary closed circuit, and the primary closed circuit is formed by a first conductor member, a second conductor member, and the first conductor member and the second conductor member at a position separated from the width direction end of the metal strip plate. The aforementioned second conductor members are formed by connecting members to each other. The front or back surfaces of the aforementioned first conductor member and the aforementioned metal strip plate face each other and are arranged across the aforementioned metal strip plate in the width direction. The aforementioned second conductor member and the aforementioned The front or back surfaces of the metal strips face each other, are separated by a first distance from the first conductor member in the direction of passing the metal strips, and are arranged across the metal strips in the width direction; and The width direction end portion of the metal strip plate is inductively heated by a secondary closed circuit passing through the width direction end portion of the metal strip plate, and the secondary closed loop is connected to the first conductor member in the metal strip plate respectively. and the induced current generated in the area where the second conductor member faces each other.
根據上述之構成,金屬帶板的寬度方向的整體被加熱,僅在通過導體構件之下(或上)的期間,且在導體構件之間則可將加熱範圍限定於金屬帶板的寬度方向端部。藉此,可以有效率地加熱金屬帶板的寬度方向的端部,防止金屬帶板的端部龜裂。又,因為可以將感應線圈與被加熱材之間隔確保得相對較寬,所以即使對於被加熱材的變形或蛇行等仍然可以在沒有附加的設備之下容易地對應。According to the above structure, the entire width direction of the metal strip is heated only while passing under (or above) the conductor members, and the heating range can be limited to the width direction ends of the metal strip between the conductor members. department. Thereby, the width-direction end portion of the metal strip plate can be efficiently heated to prevent the end portion of the metal strip plate from cracking. In addition, since the distance between the induction coil and the material to be heated can be ensured to be relatively wide, deformation or meandering of the material to be heated can be easily responded to without additional equipment.
100,200,400:感應加熱裝置 101,101A,101B:1次閉迴路 102:2次閉迴路 110,110A,110B,120,120A,120B:導體構件 111,112,121,122,111A,111B,112A,112B,121A,121B,122A,122B,131A,132A:板部 131,131A,131B,132,232A,232B,232C,232D,431:連接構件 140,240:交流電源 14B,PD:箭頭 150,160:可動部 152:螺栓 201A,201B:開關 351,352,361,362,371,372:磁性體芯材 500:酸洗裝置 510:冷軋延裝置 520:鍍敷槽 522:擦拭裝置 524:合金化加熱裝置 A,B,C,D,E:接點 2A-2A,9-9:線 B1,B2:尺寸 D:範圍 E,L,L1,L2:距離 I:感應電流 M:熔融金屬 S:金屬帶板 SE:寬度方向端部 W:板寬 100,200,400: Induction heating device 101,101A,101B: 1st closed loop 102: 2 times closed loop 110,110A,110B,120,120A,120B: Conductor components 111,112,121,122,111A,111B,112A,112B,121A,121B,122A,122B,131A,132A: Board part 131,131A,131B,132,232A,232B,232C,232D,431: connecting components 140,240:AC power supply 14B,PD:arrow 150,160: Movable part 152:Bolt 201A, 201B: switch 351,352,361,362,371,372: Magnetic core material 500: Pickling device 510: Cold rolling device 520:plating tank 522: Wiping device 524:Alloying heating device A,B,C,D,E: contacts 2A-2A,9-9: Line B1,B2: size D: range E,L,L1,L2: distance I: induced current M: molten metal S: Metal strip plate SE: Width direction end W: Board width
圖1是本揭示之第1實施形態的金屬板的感應加熱裝置的平面圖。 圖2A是相當於圖1所示之感應加熱裝置之2A-2A線箭頭視圖的側面圖。 圖2B是顯示圖1所示之感應加熱裝置的變形例的側面圖(與圖2A對應的側面圖)。 圖2C是顯示圖1所示之感應加熱裝置的其他的變形例的側面圖(與圖2A對應的側面圖)。 圖3是概念性地顯示在圖1以及圖2A~圖2C的例子中於金屬板產生之感應電流的圖。 圖4是本揭示之第2實施形態的金屬板的感應加熱裝置的平面圖。 圖5是本揭示之第2實施形態的另一例之金屬板的感應加熱裝置的平面圖。 圖6A是用於說明本揭示之第3實施形態的剖面圖。 圖6B是用於說明本揭示之第3實施形態的剖面圖。 圖7A是用於說明本揭示之第3實施形態的另一例的剖面圖。 圖7B是用於說明本揭示之第3實施形態的另一例的剖面圖。 圖8A是本揭示之第4實施形態的金屬板(寬度較窄)的感應加熱裝置的平面圖。 圖8B是本揭示之第4實施形態的金屬板(寬度較寬)的感應加熱裝置的平面圖。 圖9是相當於圖8A所示之感應加熱裝置的9-9線箭頭視圖的側面圖。 圖10是顯示用於驗證在本揭示之實施形態中對金屬板的寬度方向端部進行加熱之效果的解析結果的圖表。 圖11是顯示用於驗證在本揭示之實施形態中對金屬板的寬度方向端部進行加熱之效果的解析結果的圖表。 圖12是用於說明可在本揭示的實施形態中使用之可動部的側面圖。 圖13是顯示使用圖12的可動部而改變了導體構件間的距離之狀態的側面圖。 圖14A是用於說明可在本揭示的實施形態中使用之可動部的變形例的側面圖。 圖14B是從圖14A的箭頭14B方向觀看到的圖。 圖15是顯示使用圖12的可動部而改變了導體構件間的距離之狀態的側面圖。 圖16是將本揭示之一實施形態的感應加熱裝置適用於厚金屬之狀態的平面圖。 圖17是顯示觀看圖16所示之厚金屬的側面時,在寬度方向端部流動之電流的側面圖。 圖18是本揭示之第2實施形態的金屬板的又另一例的感應加熱裝置的平面圖。 圖19是顯示切換了圖18的感應加熱裝置的迴路之狀態的平面圖。 圖20是顯示使用了本揭示之實施形態的金屬板的感應加熱裝置之加工設備之一例的概略構成圖。 圖21是顯示使用了本揭示之實施形態的金屬板的感應加熱裝置之加工設備的其他例的概略構成圖。 圖22是顯示使用了本揭示之實施形態的金屬板的感應加熱裝置之加工設備的其他例的概略構成圖。 FIG. 1 is a plan view of a metal plate induction heating device according to the first embodiment of the present disclosure. FIG. 2A is a side view corresponding to the arrow view along line 2A-2A of the induction heating device shown in FIG. 1 . FIG. 2B is a side view showing a modification of the induction heating device shown in FIG. 1 (side view corresponding to FIG. 2A ). FIG. 2C is a side view showing another modification of the induction heating device shown in FIG. 1 (side view corresponding to FIG. 2A ). FIG. 3 is a diagram conceptually showing the induced current generated in the metal plate in the example of FIG. 1 and FIGS. 2A to 2C . 4 is a plan view of a metal plate induction heating device according to a second embodiment of the present disclosure. 5 is a plan view of an induction heating device for a metal plate according to another example of the second embodiment of the present disclosure. FIG. 6A is a cross-sectional view for explaining the third embodiment of the present disclosure. FIG. 6B is a cross-sectional view for explaining the third embodiment of the present disclosure. 7A is a cross-sectional view for explaining another example of the third embodiment of the present disclosure. 7B is a cross-sectional view for explaining another example of the third embodiment of the present disclosure. 8A is a plan view of an induction heating device for a metal plate (narrow width) according to the fourth embodiment of the present disclosure. 8B is a plan view of an induction heating device for a metal plate (wider) according to the fourth embodiment of the present disclosure. Fig. 9 is a side view corresponding to the arrow 9-9 view of the induction heating device shown in Fig. 8A. FIG. 10 is a graph showing analysis results for verifying the effect of heating the width direction end portion of the metal plate in the embodiment of the present disclosure. FIG. 11 is a graph showing analysis results for verifying the effect of heating the width direction end portion of the metal plate in the embodiment of the present disclosure. FIG. 12 is a side view illustrating a movable portion usable in the embodiment of the present disclosure. FIG. 13 is a side view showing a state in which the distance between conductor members is changed using the movable part of FIG. 12 . FIG. 14A is a side view illustrating a modification of the movable portion that can be used in the embodiment of the present disclosure. FIG. 14B is a view viewed from the direction of arrow 14B in FIG. 14A. FIG. 15 is a side view showing a state in which the distance between conductor members is changed using the movable part of FIG. 12 . FIG. 16 is a plan view of an induction heating device according to an embodiment of the present disclosure applied to thick metal. FIG. 17 is a side view showing the current flowing at the end portion in the width direction when the side surface of the thick metal shown in FIG. 16 is viewed. 18 is a plan view of another example of the induction heating device of the metal plate according to the second embodiment of the present disclosure. FIG. 19 is a plan view showing a state in which the circuit of the induction heating device of FIG. 18 is switched. 20 is a schematic block diagram showing an example of a processing equipment using an induction heating device for a metal plate according to an embodiment of the present disclosure. 21 is a schematic block diagram showing another example of processing equipment using the induction heating device for metal plates according to the embodiment of the present disclosure. FIG. 22 is a schematic block diagram showing another example of processing equipment using the induction heating device for metal plates according to the embodiment of the present disclosure.
100:感應加熱裝置 100:Induction heating device
101:1次閉迴路 101:1 times closed loop
110,120:導體構件 110,120: Conductor components
131,132:連接構件 131,132: Connecting components
140:交流電源 140:AC power supply
2A-2A:線 2A-2A: Line
B1,B2:尺寸 B1,B2: size
E,L:距離 E,L: distance
PD:箭頭 PD:arrow
S:金屬帶板 S: Metal strip plate
SE:寬度方向端部 SE: Width direction end
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW111128717A TWI827179B (en) | 2022-08-01 | 2022-08-01 | Induction heating device of metal sheet, metal sheet processing equipment, and induction heating method of metal sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW111128717A TWI827179B (en) | 2022-08-01 | 2022-08-01 | Induction heating device of metal sheet, metal sheet processing equipment, and induction heating method of metal sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI827179B TWI827179B (en) | 2023-12-21 |
TW202407109A true TW202407109A (en) | 2024-02-16 |
Family
ID=90053329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW111128717A TWI827179B (en) | 2022-08-01 | 2022-08-01 | Induction heating device of metal sheet, metal sheet processing equipment, and induction heating method of metal sheet |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI827179B (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3015918A1 (en) * | 2013-12-31 | 2015-07-03 | Roctool | DEVICE FOR HEATING A MOLD |
TWI574584B (en) * | 2014-09-03 | 2017-03-11 | 新日鐵住金股份有限公司 | Induction heating device of metal strip |
CN112430726A (en) * | 2020-12-25 | 2021-03-02 | 河南九发新材新能有限公司 | Metal conductor pipe, annealing device and annealing equipment |
-
2022
- 2022-08-01 TW TW111128717A patent/TWI827179B/en active
Also Published As
Publication number | Publication date |
---|---|
TWI827179B (en) | 2023-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5114671B2 (en) | Induction heating apparatus and induction heating method for metal plate | |
EP1008399B1 (en) | Method for joining metal pieces | |
US20180359817A1 (en) | Transverse flux induction heating device | |
KR100698502B1 (en) | Hot rolling method and apparatus for hot steel sheet | |
WO2008099974A1 (en) | Induction heating device | |
JP4153895B2 (en) | Induction heating apparatus and induction heating method for metal strip | |
US7087869B2 (en) | Transverse induction heating apparatus | |
TWI827179B (en) | Induction heating device of metal sheet, metal sheet processing equipment, and induction heating method of metal sheet | |
US6285015B1 (en) | Induction heater with a unit for preventing generation of sparks | |
WO2024024117A1 (en) | Induction heating device for metal sheet, processing equipment for metal sheet, and induction heating method for metal sheet | |
JP5262784B2 (en) | Metal plate induction heating device | |
JP2981159B2 (en) | Strip plate induction heating device | |
CN105745993A (en) | Induction heater | |
JP3914760B2 (en) | Single-turn induction heating coil | |
KR100633520B1 (en) | Transverse type induction heating apparatus and transverce type induction heating system | |
JP2995141B2 (en) | Induction heating device for metal plate | |
JP7381866B2 (en) | Slab heating device for continuous casting equipment | |
JP6812999B2 (en) | Induction heating device for metal strips, manufacturing method for metal strips, and manufacturing method for alloyed hot-dip galvanized steel sheets | |
JPH0616471Y2 (en) | Induction heating device | |
JPH1092561A (en) | Induction heating apparatus | |
JP2007324010A (en) | Induction heating apparatus excellent in uniformity in temperature in widthwise direction of metal strip | |
JP2000265209A (en) | Heating device | |
JP4457709B2 (en) | Steel plate heat treatment equipment | |
JP2006093029A (en) | Induction heating device | |
JP2005256034A (en) | Edge-heater for steel plate in hot-rolling |