附件1: 第87108323號專利申請案 40ί8Γ 中文說明書修正頁 煩請委員明示α年0月sitgi所提之 修正本有無變更實質内容是否准予炉正。 經濟部智慧財產局員工消费合作社印製 五、發明說明 (10 ) 1 4 B 固 定 側 上部 1 6 A 自 由 側 上部 1 6 B 固 定 側 上部 1 7 A 第 1 上 部電 1 7 B 第 2 上 部電 1 8 A • 白 由 側 下部 1 8 B 固 定 側 下部 2 0 A 白 由 側 下部 2 0 B 固 定 側 下部 2 1 A 第 1 下 部電 2 1 B 第 2 下 部電 2 2 A 連 結 部 石灶心 2 2 B 連 結 部 磁心 2 4 A 電 流 控 制裝 2 4 B 電 流 控 制裝 2 4 C 電 流 控 制裝 2 4 D 電 流 控制裝 1 0 1 連 續 鑄 造用 1 0 1 A 短 邊 壁 1 0 1 B 長 邊 壁 1 0 2 浸 漬 噴 嘴 1 0 2 B 浸 漬 噴 嘴的 1 0 3 A 鐵 心 本 體 1 0 3 B 鐵 心 本 體 置 置 置 置 鑄模 吐出口 民國88年11月呈 Β7_404866 ___ _磁心 電磁鐵線圈 電磁鐵線圈 磁鐵 磁鐵 磁心 磁心 電磁鐵線圈 電磁鐵線圈 磁鐵 磁鐵 (請先閱讀背面之注意事項再填寫本頁) '衣— —訂i---.----線 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -13- 經濟部中央標準局員工消費合作社印製 A7 __ B7 五説明(14(]4866 ' 【發明所屬之技術領域】 本發明係關於連續鑄造用鑄模的電磁制動裝置以及使 用此裝置之連續鑄造方法，特別是適合使連續鑄造用鑄模 內的熔鋼產生靜磁場，來控制熔鋼流的連續鑄造用鑄模的 電磁制動裝置以及使用此裝置之連續鑄造方法。 【習知技術】 以往，一般的鋼片之連續鑄造，雖然省略其圖示，係 將收容在澆鑄用漏斗（tundish)內的熔鋼，經由連接在漏 斗底部的浸漬噴嘴，導入連續鑄造用鑄模內。此情況下， 由於自浸漬噴嘴的吐出口所噴出的熔鋼之流速，顯著地比 鑄造速度大，熔鋼中的夾雜物（inclusion)或是氣泡侵入下 方深處，而被凝固殻捕捉到（被包入其中）時，會成爲製 品缺陷的原因而無法避免。又，當熔鋼的噴流往上的流動 大時，鑄模液面凹部（meniscus)會助長高漲液面的變動， 這將會嚴重地影響鑄片的品質或是鑄造作業》 爲了避免此問題發生，例如在日本特開平 3 — 142049號公報中，揭示出一種藉由配置在鑄模 之相對的側壁背面上的磁極，對鑄模內的熔鋼施加靜磁場 ，來對鑄模內的熔鋼流施加制動的連續鑄造技術，避免產 生上述問題。 第6圖（A)係表示上述公報中所掲示的鑄造裝置之 重要部位的橫剖面圖，第6圖（B )係其部分擴大的縱剖 面圖。圖中，圖號1 0 1係表示內部爲水冷式，由互相面 (請先閱i*'背面之注意事項再填寫本頁)Attachment 1: Patent Application No. 87108323 40 Rev. 8Γ Chinese Manual Revised Page We would like to ask members to indicate whether the amendments proposed by sitgi in April of the year α have been approved for the amendment. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (10) 1 4 B Fixed side upper part 1 6 A Free side upper part 1 6 B Fixed side upper part 1 7 A 1st upper part 1 7 B 2nd upper part 1 8 A • White bottom side 1 8 B Fixed bottom side 2 0 A White bottom side 2 0 B Fixed side bottom 2 1 A 1st lower side 2 1 B 2nd lower side 2 2 A junction stone hearth 2 2 B Core 2 2 A Current control device 2 4 B Current control device 2 4 C Current control device 2 4 D Current control device 1 0 1 For continuous casting 1 0 1 A Short side wall 1 0 1 B Long side wall 1 0 2 Immersion Nozzle 1 0 2 B Immersion Nozzle 1 0 3 A Iron Core Body 1 0 3 B Iron Core Body Placement Mold Casting Outlet November 1998 88B7_404866 ___ _Magnetic Core Electromagnet Coil Electromagnet Coil Magnet Magnet Core Magnet Electromagnet Coil Electromagnet Coil Magnet Magnet (Please read the precautions on the back before filling this page) '衣 — —Order i ---.---- Thread paper size applicable to China Standard for Domestic Standard (CNS) A4 (210 X 297 mm) -13- Printed by A7 __ B7 of the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (14 () 4866 '[Technical Field to which the Invention belongs] This invention relates to continuous Electromagnetic braking device for casting mold and continuous casting method using the same, especially electromagnetic braking device suitable for generating static magnetic field in molten steel in continuous casting mold to control molten steel flow, and using this device [Conventional technology] Conventionally, the continuous casting of general steel sheets, although not shown in the figure, involves melting steel contained in a casting funnel (tundish) through an immersion nozzle connected to the bottom of the funnel. Introduced into the mold for continuous casting. In this case, the velocity of the molten steel sprayed from the outlet of the immersion nozzle is significantly higher than the casting speed, and inclusions or bubbles in the molten steel penetrate into the depth below. When captured by the solidified shell (wrapped in), it will become the cause of the product defect and cannot be avoided. Also, when the upward flow of the molten steel jet is large The mold surface recess (meniscus) will promote the fluctuation of the rising liquid level, which will seriously affect the quality of the slab or the casting operation. "To avoid this problem, for example, in Japanese Patent Application Laid-Open No. 3-142049, it is disclosed A continuous casting technique is applied by applying a magnetic field to the molten steel in the mold by using magnetic poles arranged on the back surface of the opposite side wall of the mold to apply a brake to the molten steel flow in the mold to avoid the above problems. Fig. 6 (A) is a cross-sectional view showing important parts of the casting apparatus shown in the above publication, and Fig. 6 (B) is a partially enlarged longitudinal cross-sectional view. In the figure, the drawing number 1 0 1 indicates that the interior is water-cooled, and faces each other (please read the precautions on the back of i * 'before filling this page)
本紙張尺度適用中國國家標準（CNS ) A4規梏（210X297公f ) -4- A7 4Q48.fia 五、發明說明（） B7 經濟部智慧財產局貝工消费合作社印製 1 0 4 A 上 部 磁 極 1 0 4 B 上 部 磁 極 1 0 5 A 下 部 磁 極 1 0 5 B 下部 磁 極 1 0 6 磁 場 調 整 手段 1 0 7 10 8 托 架 1 0 9 樞 支 銷 1 1 0 油 壓 缸 S 凝 固 殼 S m 熔 鋼This paper size applies the Chinese National Standard (CNS) A4 regulations (210X297 male f) -4- A7 4Q48.fia V. Description of the invention () B7 Printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 1 0 4 A Upper magnetic pole 1 0 4 B upper magnetic pole 1 0 5 A lower magnetic pole 1 0 5 B lower magnetic pole 1 0 6 magnetic field adjustment means 1 0 7 10 8 bracket 1 0 9 pivot pin 1 1 0 hydraulic cylinder S solidification shell S m molten steel
(婧先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公釐） 13-1 經濟部中央標準局員工消費合作社印製 A7 __404866_B7__ 五、發明説明（2 ) 對的各一對短邊壁1 0 1 A以及長邊壁（互相面對的側壁 )1 0 1 B所構成的連續鑄造用鑄模；圖號1 〇 2係表示 將熔鋼由漏斗（未圖示）供給至該鑄模1 〇 1內的浸漬噴 嘴；圖號103A、103B係形成磁路的鐵心本體：圖 號 104A、104B、105A、105B 係與各鐵心 本體鐵心本體連接而往鑄模101的寬部方向延伸的上部 和下部磁極（鐵心）》又，圖號1 〇 6係調整各磁極間所 產生的靜磁場強度的磁場調整手段，此磁場調整手段 .1 0 6係由固定在支架上的托架1 〇 7、固定在鐵心本體 103B上的托架108、連接兩托架107和108的 樞支銷1 0 9、以及固定在支架上而其桿的前端卡合在鐵 心本體上的油壓缸1 1 0所構成。另外，圖中的圖號 1 0 2B係爲浸漬噴嘴1 〇 2的吐出口》 上述連續鑄造用鑄模1 0 1中，例如在第6圖（A) 中係以左側（A側）的上部磁極1 〇 4 A爲N極，B側的 上部磁極1 0 4 B爲S極；於是，在上部磁極中，產生A —B的磁場；在下部磁極中，則產生B — A的磁場。若將 熔鋼供給至此磁場中，往上的流動會藉由上部磁場而被減 速；又，往下的流動則會藉由下部磁場而被減速》當要變 更上述鑄模101的上部磁極間和下部磁極間的靜磁場強 度時，利用前述磁場調整手段1 0 6使油壓缸1 1 0動作 ，使鐵心本體以樞支銷1 0 9爲中心而作旋轉，藉由此手 段來變更上部磁極間的距離，來變更磁場的強度。 ； 於 .—訂d 1 - ί (請先閱t背面之注意事項再填寫本頁) 本紙悵尺度適用中國國家標準（CNS M4規格（210X 297公梦） .5 . 經濟部中央標準局員工消費合作社印製 404866 A7 B7 五、發明説明（3 ) 【發明之揭示】 然而，對於上述公報所揭示的技術，除了需要油壓缸 1 1 0和樞支銷1 0 9，尙需要用來正確地調整距離的位 置檢測感測器，因此需要較大的空間來設置用來調整靜磁 場強度的設備，而且會有設備數量多的問題。又，上述公 報中，雖然揭示出一種將非磁性材料放入鐵心的一部份中 ，來調整磁場的方法；然而，此方法除了無法在鑄造中對 應鋼片種類、寬度以及鑄造速度來任意地變更磁場強度以 外，由於更換非磁性材料費時，所以會有作業效率差的問 題存在。 本發明係爲了解決上述課題而發明出來，其第1課題 爲提供一種技術，可以容易且價廉地改變上下磁極間的磁 場強度，而且能夠在鑄造中任意地變更。 又，本發明藉由解決前述第1課題，可以製造出高品 質的鑄造成品來達成本發明的第2課題。 【本發明之實施形態】 以下，參照圖面來說明本發明之實施形態。 第1圖和第7圖係表示關於本發明之實施形態的槪略 構成之重要部分剖面圖。本實施形態之電磁制動裝置，係 爲適合第1圖或第7圖中的符號1〇所示之鑄模的電磁制 動裝置。此鑄模1 〇與前述第6圖所示之鑄模-爲實質相 同之物’其側壁的內部有冷卻水流過；熔鋼S m則由浸漬 噴嘴1 2的吐出口（無圖示）供給至該鑄模1 〇內。本實 本紙張尺度適用中國國家標準（CNS ) A4規枱（210X297公楚） -6- I :------衣-- 一- (請先閱讀背面之注意事項再填tr本頁) J—訂 經濟部中央標準局員工消費合作社印製 404866 五、發明説明（4 ) 施形態之電磁制動裝置，在位於比浸漬噴嘴1 2的吐出口 稍微上方的位置處，具有設置在靠近自由側（圖中左側） 之鑄模10之側壁背面的上部磁心14A和捲繞在其周圍 的上部線圈1 6A所構成的第1上部電磁鐵1 7A ;以及 由位於相同高度位置的固定側（圖中右側）的上部磁心 1 4B和上部線圈1 6B所構成的第2上部電磁鐵17B :這一對上部電磁鐵1 7A、1 7 B配置成互相面對而將 禱模夾在中間。 在第1圖中的上部電磁鐵下方，具有由自由側的下部 磁心1 8A和下部電磁鐵線圈2 0A所構成的第1下部電 磁鐵2 1 A、以及由固定側的下部磁心1 8 B和下部電磁 鐵線圈2 Ο B所構成的第2下部電磁鐵2 1 B.;這些電磁 鐵2 1 A、2 1 B同樣地配置成互相面對。又，上部磁心 1 4 A、1 4 B和下部磁心1 8 A、1 8 B，係經由連結 部磁心2 2 A、2 2 B而形成一體，將兩者導磁地連接在 一起。而且，在本實施形態中，由上部電流控制裝置 2 4A將電流供給至分別構成第1和第2上部電磁鐵的2 個上部電磁鐵線圈1 6A、1 6 B，而由電流控制裝置 2 4B將電流供給至分別構成第1和第2下部電磁鐵的2 個下部電磁鐵線圈16A、16B，同時，分別獨立地控 制各電流値。 亦即，任一大小的相同電流被供給至2個上部電磁鐵 線圈1 6 A、1 6 B，同樣地，相同大小的電流被供給至 2個下部電磁鐵線圈2 0A、2 Ο B。因此，可以任意地 本纸張尺度適用中國國家標準（CNS ) A4規桔（210X29?公犮） ^^1 ^—^1 —^ϋ I m m ^ 1^. n - -¾ _ 、-:· - i 丨-.. (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 A7 ____404866__b7___ 五、發明説明（5 ) 分別調整1對上部電磁鐵1 7A、1 7B之間的靜磁場強 度 '以及1對下部電磁鐵2 1A、2 1B之間的靜磁場強 度。 接著，在第7圖中，位於上部電磁鐵下方，具有由自 由側的下部磁心1 8A和下部電磁鐵線圈2 0A所構成的 第1下部電磁鐵2 1 A、以及由固定側的下部磁心1 8 B 和下部電磁鐵線圈2 0 B所構成的第2下部電磁鐵2Ί B :這1對電磁鐵同樣地配置成互相面對。又，上部磁心 1 4 A、1 4 B和下部鐵心1 8 A、1 8 B，係經由連結 部磁心22 A、22B而形成一體，將兩者導磁地連接在 一起。又，由電流控制裝置2 4A〜2 4D分別供給電流 至4個電磁鐵線圈16A、16B、16C、16D，同 時，構成能夠獨立地控制各電流値。 接著，說明本實施形態的作用。 第1圖中，當欲在上部和下部產生靜磁場時，藉由前 述2個控制裝置2 4 A和2 4 B，分別地獨立控制供給至 上部電磁鐵1 7A、1 7B以及下部電磁鐵2 1A、 2 1 B的電流，於是上下電磁鐵的磁極關係如第2圖所示 ，使自由側的上部磁極爲S極，而互相面對的固定側上部 磁極爲N極；使自由側的下部磁極爲N極，而互相面對的 固定側上部磁-爲S極。亦即，使夾住熔鋼的互相面對的 磁極以及同一側的下上磁極爲相異的磁極。又，在本實施 形態中，爲了防止在熔鋼的液面凹部處發生鑄模粉末捲入 的情況，而使上部的磁場強度增強來使熔鋼液面的變動緩 ---；------%-----Ί 訂 77 一 - - /:, (請先閱济背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規桔（210X 297公梦） -8 - A7 A7 B7 404866 五、發明説明（6 ) 和化。又，爲了防止非金屬夾雜物侵入熔鋼深處，可以使 下部的磁場增強來控制鑄模內之熔鋼的往下流動速度。對 應上述目的，若利用上下兩電磁鐵來任意地控制磁場強度 ，能夠適當地控制熔鋼內的流動》 因此，使用本實施形態的電磁制動裝置，可以利用上 部和下部的電磁鐵，對應鑄片的寬度、鋼種以及鑄造速度 ，適當地控制靜磁場強度來進行鑄造，提高鑄片品質。 接著，在第7圖中，當欲在上部和下部產生靜磁場時 ，藉由前述4個控制裝置2 4A〜2 4D，分別地獨立控 制供給至各電磁鐵的電流，於是上下電磁鐵的磁極關係如 第2圖所示，使夾住熔鋼的互相面對的磁極以及同一側的 下上磁極爲相異的磁極。在此情況下，使互相面對的電磁 鐵線圈之電流値相同時，最有效率。又，爲了防止在熔鋼 的液面凹部處發生鑄模粉末捲入的情況，而使上部的磁場 強度增強來使熔鋼液面的變動緩和化；或是爲了防止非金 屬夾雜物侵入熔鋼深處，可以使下部的磁場增強來控制鑄 模內之熔鋼的往下流動速度。 又，習知的電磁制動裝置，若要使上部或下部的磁場 強度爲零，即使使供給至電磁鐵的線圈之電流値爲零，由 於上下鐵心分別藉由連結部鐵心而導磁地連接在一起，所 以無法使磁場強度爲零。然而，在本實施形態中，如第8 圖或第9圖所示，藉由前述電流控制裝置2 4A〜24D ，使互相面對的電極之一方的電流方向反轉，磁極變成相 同的磁極，可以使磁場強度變零。 本紙張尺度適用中國國家標準（CNS ) A4規核（210X 297公势） 1^1 I i^—^1 ·1 nn —^^1 n n^i —^ϋ ^n—-*，n · 、v5l * -. -- /: · (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 -9 - A7 B7 404866 五、發明説明（7 ) 因此，即使由於熔鋼液面變動而捲入粉末也可以確保 表皮下的品質，而且可以防止非金屬夾雜物混入液面凹部 之凝固殻內面，或是爲了防止捕捉到A r氣（此A r氣係 用來避免浸漬噴嘴的吐出口堵塞而被吹入熔鋼中），而必 須使液面凹部之熔鋼流動時，若將上部電磁鐵間的磁場強 度變成零則具有效果，因此，根據本實施形態可以容易地 進行如此的控制。 《實施例》 以下說明關於本發明之具體實施例。 使用前述具有第1圖或第7圖所示之實施形態的電磁 制動裝置之鑄模，以下述的條件來進行連續鑄造，製造出 低碳A 1淨靜鋼（killed steel )，然後檢査其表面品質和內 部品質。將下部磁場的強度固定在2 5 0 0高斯（gauss) ，變化上部磁場強度的結果如第3圖所示；相反的，將上 部磁場強度固定在2 5 0 0高斯’變化下部磁場強度的結 果如第4圖所示。 m In ml n mu— HI - In ^^^1 UK m^i-* i - -- - * / (請先閱f背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 〔鑄造條件〕 鑄造速度 鑄片寬度 鑄片厚度 下部磁場強度 上部磁場強度 2.5/ 14 0 0 2 2 0 m 2 0 0 0 2 0 0 0 3 0 0 0 高斯（gauss 3 0 0 0 高斯（ gauss 本紙張尺度適用中國國家標準（CNS > A4規格（2I0X297公漦） -10- ___404866 b7___ 五、發明説明（8 ) 根據上述第3圖、第4圖的結果，明顯地顯示對應操 作條件來調整磁場強度是非常有效的。 如以上所述，若根據本實施形態，由於可以任意地控 制鑄模內的熔鋼流，所以可以防止非金屬夾雜物由於注入 的熔鋼噴流而被捲入熔鋼池深處，或是防止由於液面凹部 的液面變動而將鑄模粉末捲入熔鋼中，因此可以高效率地 鑄造出品質良好的鑄片。 接著，說明本發明之其他實施形態。 第5圖係表示本實施形態之電磁制動裝置的槪略構成 剖面圖，此圖係相當於第.1圖。本實施形態的電磁制動裝 置，在自由側和固定側處，皆未有導磁地連接上下鐵心的 連接部鐵心22A、22B，上部、下部的各鐵心14A 、14B、18A、18B係全部獨立，除此以外，實質 上和前述第1實施形態的電磁制動裝置相同。 經濟部中央標準局員工消费合作社印製 在本實施形態中，由於同一側的上下鐵心沒有導磁地 連接在一起，與上述所說明的實施形態比較，對於輸入相 同的電流，雖然所產生的磁場強度較小，然而，除了可以 進行相同地控制以外，進而可以使上下電磁鐵的任一方之 靜磁場強度近乎於零。 以上，說明了本發明之具體實施例，然而，本發明並 不限於前述實施形態，可以在其要旨的範圍內作各種變化 -11 - (請先閱讀背面之注意事項再填寫本頁) 本纸張尺度適用中國國家標準（CNS ) Λ4規搞（210X297公t ) - A7 ________ B7 五、發明説'一4048⑽— 【發明之效果】 若根據本發明，可以容易且價廉地改變上下電磁鐵之 磁極間的磁場強度，而且能夠在鑄造中任意地變更。 【圖面之簡單說明】 第1圖係表示關於本發明之實施形態的槪略構成之重 要部分剖面圖。 第2圖係表示磁極的組合之說明圖。 第3圖係表示在實施例中所得到的鑄片之品質的曲線 圖。 第4圖係表示在實施例中所得到的鑄片之品質的其他 曲線圖。 第5圖係表示關於本發明之其他實施形態的槪略構成 之重要部分剖面圖。 第6圖係槪要地表示習知鑄模的剖面圖。 第7圖係表示關於本發明之其他實施形態的槪略構成 之重要部分剖面圖。 經濟部中央標準局貝工消費合作社印製 第8圖係表示其他磁極的組合之說明圖。 第9圖係表示其他磁極的組合之說明圖。 【圖號說明】 10 連續鑄造用鑄模 1 2 浸漬噴嘴 1 4 A 自由側上都磁心 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公# ) - 12- 附件1: 第87108323號專利申請案 40ί8Γ 中文說明書修正頁 煩請委員明示α年0月sitgi所提之 修正本有無變更實質内容是否准予炉正。 經濟部智慧財產局員工消费合作社印製 五、發明說明 (10 ) 1 4 B 固 定 側 上部 1 6 A 自 由 側 上部 1 6 B 固 定 側 上部 1 7 A 第 1 上 部電 1 7 B 第 2 上 部電 1 8 A • 白 由 側 下部 1 8 B 固 定 側 下部 2 0 A 白 由 側 下部 2 0 B 固 定 側 下部 2 1 A 第 1 下 部電 2 1 B 第 2 下 部電 2 2 A 連 結 部 石灶心 2 2 B 連 結 部 磁心 2 4 A 電 流 控 制裝 2 4 B 電 流 控 制裝 2 4 C 電 流 控 制裝 2 4 D 電 流 控制裝 1 0 1 連 續 鑄 造用 1 0 1 A 短 邊 壁 1 0 1 B 長 邊 壁 1 0 2 浸 漬 噴 嘴 1 0 2 B 浸 漬 噴 嘴的 1 0 3 A 鐵 心 本 體 1 0 3 B 鐵 心 本 體 置 置 置 置 鑄模 吐出口 民國88年11月呈 Β7_404866 ___ _磁心 電磁鐵線圈 電磁鐵線圈 磁鐵 磁鐵 磁心 磁心 電磁鐵線圈 電磁鐵線圈 磁鐵 磁鐵 (請先閱讀背面之注意事項再填寫本頁) '衣— —訂i---.----線 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -13- A7 4Q48.fia 五、發明說明（） B7 經濟部智慧財產局貝工消费合作社印製 1 0 4 A 上 部 磁 極 1 0 4 B 上 部 磁 極 1 0 5 A 下 部 磁 極 1 0 5 B 下部 磁 極 1 0 6 磁 場 調 整 手段 1 0 7 10 8 托 架 1 0 9 樞 支 銷 1 1 0 油 壓 缸 S 凝 固 殼 S m 熔 鋼(Jing first read the precautions on the back before filling this page) This paper size applies the Chinese National Standard (CNS) A4 specification (210 x 297 mm) 13-1 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 __404866_B7__ V. Invention Explanation (2) A pair of short-side walls 1 0 1 A and long-side walls (side walls facing each other) 1 0 1 B each constitute a continuous casting mold; Figure No. 10 indicates that the molten steel is made of A hopper (not shown) is supplied to the immersion nozzle in the mold 101; the drawing numbers 103A and 103B are the core bodies forming the magnetic circuit: the drawing numbers 104A, 104B, 105A, and 105B are connected to the core bodies of the core bodies The upper and lower magnetic poles (iron cores) extending in the wide direction of the mold 101. Also, Fig. 10 is a magnetic field adjustment means for adjusting the strength of the static magnetic field generated between the magnetic poles. This magnetic field adjustment means is fixed by 1.06. A bracket 107 on the bracket, a bracket 108 fixed on the core body 103B, a pivot pin 1 0 9 connecting the two brackets 107 and 108, and a bracket fixed on the bracket with the front end of the rod engaged with the core It is composed of a hydraulic cylinder 1 1 0 on the body. In addition, the drawing number 10 2B in the figure is the discharge port of the immersion nozzle 102. In the above-mentioned continuous casting mold 101, for example, the upper magnetic pole on the left side (A side) is shown in FIG. 6 (A). 1 〇 A is the N pole, and the upper magnetic pole on the B side is 104 pole. Therefore, in the upper magnetic pole, a magnetic field of A-B is generated; in the lower magnetic pole, a magnetic field of B-A is generated. If molten steel is supplied to this magnetic field, the upward flow will be decelerated by the upper magnetic field; and the downward flow will be decelerated by the lower magnetic field. "When changing between the upper and lower magnetic poles of the above mold 101 When the static magnetic field strength between the magnetic poles is reached, the hydraulic cylinder 1 1 0 is moved by using the magnetic field adjustment means 1 06 described above, and the core body is rotated around the pivot pin 1 0 9 to change the upper magnetic pole space by this means. Distance to change the strength of the magnetic field. ; .. Order d 1-ί (Please read the notes on the back of t before filling out this page) The standard of this paper is applicable to Chinese national standards (CNS M4 specifications (210X 297 public dreams). 5. Employees of the Central Standards Bureau of the Ministry of Economic Affairs Cooperative printed 404866 A7 B7 V. Description of the invention (3) [Disclosure of the invention] However, for the technology disclosed in the above bulletin, in addition to the hydraulic cylinder 1 1 0 and the pivot pin 1 0 9, 尙 needs to be used to correctly The position detection sensor that adjusts the distance requires a large space to set up a device for adjusting the strength of the static magnetic field, and there is a problem that the number of devices is large. Moreover, although the above publication discloses a method for putting non-magnetic materials The method of adjusting the magnetic field into a part of the iron core; however, this method can not arbitrarily change the strength of the magnetic field in accordance with the type, width, and casting speed of the steel sheet during casting, because it takes time to replace non-magnetic materials, so there will be There is a problem of poor work efficiency. The present invention was invented in order to solve the above problems, and the first problem is to provide a technology that can easily and inexpensively change the top and bottom The strength of the magnetic field between the magnetic poles can be arbitrarily changed during casting. In addition, the present invention solves the above-mentioned first problem and can produce a high-quality cast product to achieve the second problem of the invention. [Embodiments of the invention ] Hereinafter, the embodiment of the present invention will be described with reference to the drawings. Figures 1 and 7 are cross-sectional views showing important parts of a rough structure of the embodiment of the present invention. The electromagnetic brake device of this embodiment is suitable The electromagnetic brake device of the mold shown by the symbol 10 in FIG. 1 or FIG. 7. This mold 10 is substantially the same as the mold shown in the foregoing FIG. 6 ', and cooling water flows through the inside of its side wall; The molten steel S m is supplied into the mold 10 through the discharge port (not shown) of the dipping nozzle 12. The actual paper size is applicable to the Chinese National Standard (CNS) A4 gauge (210X297). 6-I : ------ Cloths --- (Please read the precautions on the back before filling out this page) J—Order printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 404866 V. Description of the invention (4) Electromagnetic brake Slightly above the discharge opening of the nozzle 12, there is a first upper portion composed of an upper magnetic core 14A provided on the back surface of the side wall of the mold 10 near the free side (left in the figure) and an upper coil 16A wound around the upper core. Electromagnet 17A; and a second upper electromagnet 17B composed of an upper core 14B and an upper coil 16B located on the fixed side (right side in the figure) at the same height position: the pair of upper electromagnets 17A, 1 7 B is arranged so as to face each other and sandwich the prayer mold. Below the upper electromagnet in the first figure, there is a first lower electromagnet 2 composed of a lower magnetic core 18A on the free side and a lower electromagnet coil 2 0A. 1 A, and the second lower electromagnet 2 1 B composed of the lower magnetic core 1 8 B and the lower electromagnet coil 2 0 B on the fixed side; these electromagnets 2 1 A, 2 1 B are similarly arranged to face each other Correct. The upper magnetic cores 1 4 A, 1 4 B and the lower magnetic cores 1 8 A, 1 8 B are integrally formed through the connecting portion magnetic cores 2 2 A, 2 2 B, and the two are magnetically connected together. Furthermore, in this embodiment, the current is supplied from the upper current control device 24A to the two upper electromagnet coils 16A and 16B constituting the first and second upper electromagnets, respectively, and the current control device 24B Current is supplied to two lower electromagnet coils 16A, 16B constituting the first and second lower electromagnets, and each current 値 is controlled independently. That is, the same current of any size is supplied to the two upper electromagnet coils 16 A, 1 6 B, and similarly, the same current is supplied to the two lower electromagnet coils 2 0A, 2 0 B. Therefore, this paper size can be arbitrarily applied to the Chinese National Standard (CNS) A4 standard orange (210X29? Public 犮) ^^ 1 ^ — ^ 1 — ^ ϋ I mm ^ 1 ^. N--¾ _,-: · -i 丨-.. (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 ____404866__b7___ V. Description of the invention (5) Adjust 1 pair of upper electromagnets 1 7A, 1 7B The static magnetic field strength between them 'and the static magnetic field strength between a pair of lower electromagnets 21A and 21B. Next, in FIG. 7, the first lower electromagnet 2 1 A composed of the lower magnetic core 18A on the free side and the lower electromagnet coil 2 0A and the lower magnetic core 1 on the fixed side are located below the upper electromagnet. The second lower electromagnet 2Ί B composed of 8 B and the lower electromagnet coil 2 0 B: The pair of electromagnets are similarly arranged to face each other. The upper cores 1 4 A, 1 4 B and the lower cores 1 8 A, 1 8 B are integrally connected via the connecting portion cores 22 A, 22B, and the two are magnetically connected together. In addition, current is supplied to the four electromagnet coils 16A, 16B, 16C, and 16D from the current control devices 24A to 24D, respectively. At the same time, each current can be controlled independently. Next, the effect of this embodiment will be described. In the first figure, when a static magnetic field is to be generated in the upper and lower portions, the two control devices 2 4 A and 2 4 B are used to independently control and supply the upper electromagnets 17A, 17B, and the lower electromagnet 2 respectively. The currents of 1A, 2 1 B, so the relationship between the magnetic poles of the upper and lower electromagnets is as shown in Fig. 2. The upper magnetic pole of the free side is S pole, and the upper magnetic pole of the fixed side facing each other is N pole. The magnetic pole is the N pole, and the fixed upper magnets facing each other are the S pole. In other words, the magnetic poles facing each other sandwiching the molten steel and the magnetic poles on the same side are different from each other. In addition, in this embodiment, in order to prevent the mold powder from being entangled in the molten steel liquid surface recessed portion, the strength of the magnetic field at the upper part is increased to make the fluctuation of the molten steel liquid level slower; -% ----- Ί Order 77 a--/ :, (Please read the precautions on the back of the page before filling out this page) This paper size applies the Chinese National Standard (CNS) A4 Orange (210X 297 public dream) -8-A7 A7 B7 404866 V. Description of the invention (6) Hehua. In addition, in order to prevent non-metallic inclusions from penetrating deep into the molten steel, the magnetic field in the lower part can be strengthened to control the downward flow velocity of the molten steel in the mold. Corresponding to the above purpose, if the upper and lower electromagnets are used to arbitrarily control the magnetic field strength, the flow in the molten steel can be appropriately controlled. Therefore, using the electromagnetic brake device of this embodiment, the upper and lower electromagnets can be used to correspond to the cast piece. Width, steel type and casting speed, the static magnetic field strength is appropriately controlled for casting, and the quality of the slab is improved. Next, in FIG. 7, when it is desired to generate a static magnetic field in the upper and lower portions, the current supplied to each electromagnet is independently controlled by the aforementioned four control devices 24A to 24D, so the magnetic poles of the upper and lower electromagnets are controlled. As shown in FIG. 2, the magnetic poles facing each other sandwiching molten steel and the magnetic poles on the same side are different from each other. In this case, it is most efficient to make the currents of the electromagnetic iron coils facing each other the same. In addition, in order to prevent the mold powder from being entangled in the molten steel liquid surface recess, the magnetic field strength of the upper part is increased to reduce the fluctuation of the molten steel liquid level; or to prevent non-metallic inclusions from penetrating into the molten steel At the same time, the lower magnetic field can be strengthened to control the downward flow speed of molten steel in the mold. In addition, in the conventional electromagnetic braking device, if the magnetic field strength of the upper or lower portion is to be zero, even if the current 的 of the coil supplied to the electromagnet is to be zero, the upper and lower iron cores are magnetically connected to each other through the connection core. Together, it is not possible to make the magnetic field strength zero. However, in this embodiment, as shown in FIG. 8 or FIG. 9, by the aforementioned current control device 24A to 24D, the current direction of one of the electrodes facing each other is reversed, and the magnetic poles become the same. Can make the magnetic field strength zero. This paper size applies Chinese National Standard (CNS) A4 regulation (210X 297 public power) 1 ^ 1 I i ^ — ^ 1 · 1 nn — ^^ 1 nn ^ i — ^ ϋ ^ n —- *, n ·,, v5l *-.-/: (Please read the notes on the back before filling this page) Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs -9-A7 B7 404866 V. Description of Invention (7) Therefore, The inclusion of powder in the liquid level of the steel can also ensure the quality under the skin, and prevent non-metallic inclusions from mixing into the inner surface of the solidified shell of the liquid surface recess, or to prevent the capture of Ar gas (this Ar gas is used to It is necessary to prevent the outlet of the immersion nozzle from being blocked and being blown into the molten steel.) When the molten steel in the liquid recess is required to flow, it is effective to reduce the magnetic field strength between the upper electromagnets. Therefore, according to this embodiment, Such control is easily performed. «Examples» Specific examples of the present invention will be described below. Using the mold of the electromagnetic brake device having the embodiment shown in FIG. 1 or FIG. 7 described above, continuous casting was performed under the following conditions to produce a low-carbon A 1 killed steel, and the surface quality was checked. And internal quality. The lower magnetic field strength is fixed at 2 500 Gauss, and the result of changing the upper magnetic field strength is shown in Figure 3. On the contrary, the upper magnetic field strength is fixed at 2 500 Gauss' and the lower magnetic field strength is changed. As shown in Figure 4. m In ml n mu— HI-In ^^^ 1 UK m ^ i- * i---* / (Please read the notes on the back of f before filling out this page) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs [Casting conditions] Casting speed Slab width Slab thickness Lower magnetic field strength Upper magnetic field strength 2.5 / 14 0 0 2 2 0 m 2 0 0 0 2 0 0 0 3 0 0 0 Gauss (gauss 3 0 0 0 Gauss Paper size applies Chinese national standard (CNS > A4 specification (2I0X297) 漦 -10- ___404866 b7___ V. Description of the invention (8) According to the results of Figures 3 and 4, the corresponding operating conditions are clearly displayed to adjust the magnetic field The strength is very effective. As described above, according to this embodiment, since the molten steel flow in the mold can be arbitrarily controlled, non-metallic inclusions can be prevented from being drawn into the molten steel pool due to the injected molten steel jet. Or it can prevent the mold powder from being entangled in the molten steel due to the liquid level fluctuation of the liquid surface recess, so that a good quality slab can be efficiently cast. Next, another embodiment of the present invention will be described. Fig. 5 Shows the electromagnetic system of this embodiment The schematic structure of the device is a cross-sectional view, which is equivalent to Fig. 1. The electromagnetic brake device of this embodiment has no connection portions 22A, 22B on the free side and the fixed side that are magnetically connected to the upper and lower cores. The upper and lower cores 14A, 14B, 18A, and 18B are all independent, except that they are substantially the same as the electromagnetic brake device of the first embodiment described above. Printed in this embodiment by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Since the upper and lower iron cores on the same side are not magnetically connected, compared with the embodiment described above, although the same magnetic field is input, the generated magnetic field strength is small, but in addition to the same control, Furthermore, the static magnetic field strength of either of the upper and lower electromagnets can be made close to zero. The specific embodiments of the present invention have been described above. However, the present invention is not limited to the foregoing embodiments, and various changes can be made within the scope of the gist thereof. 11-(Please read the notes on the back before filling out this page) This paper size applies the Chinese National Standard (CNS) Λ4 regulations (210X297 Common t)-A7 ________ B7 V. The invention says' 一 4048⑽ — [Effect of the invention] According to the present invention, the magnetic field strength between the upper and lower electromagnet poles can be changed easily and inexpensively, and can be arbitrarily changed during casting. [Brief Description of the Drawings] FIG. 1 is a cross-sectional view showing an important part of a schematic structure of an embodiment of the present invention. FIG. 2 is an explanatory diagram showing a combination of magnetic poles. FIG. 3 is a diagram showing an embodiment A graph of the quality of the obtained slabs. Fig. 4 is another graph showing the quality of the slabs obtained in the examples. Fig. 5 is a cross-sectional view of an important part showing a schematic configuration of another embodiment of the present invention. Fig. 6 is a sectional view schematically showing a conventional mold. Fig. 7 is a cross-sectional view of an important part showing a schematic configuration of another embodiment of the present invention. Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Figure 8 is an explanatory diagram showing the combination of other magnetic poles. Fig. 9 is an explanatory diagram showing a combination of other magnetic poles. [Illustration of the drawing number] 10 Mould for continuous casting 1 2 Immersion nozzle 1 4 A Magnetic core on the free side The paper size applies Chinese National Standard (CNS) A4 Specification (210X297 公 #)-12- Appendix 1: Patent Application No. 87108323 Case 40ί8Γ The amendment page of the Chinese instruction manual, members are requested to indicate whether the substance of the amendment proposed by sitgi in the year of α has been approved by the Zheng. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (10) 1 4 B Fixed side upper part 1 6 A Free side upper part 1 6 B Fixed side upper part 1 7 A 1st upper part 1 7 B 2nd upper part 1 8 A • White bottom side 1 8 B Fixed bottom side 2 0 A White bottom side 2 0 B Fixed side bottom 2 1 A 1st lower side 2 1 B 2nd lower side 2 2 A junction stone hearth 2 2 B Core 2 2 A Current control device 2 4 B Current control device 2 4 C Current control device 2 4 D Current control device 1 0 1 For continuous casting 1 0 1 A Short side wall 1 0 1 B Long side wall 1 0 2 Immersion Nozzle 1 0 2 B Immersion Nozzle 1 0 3 A Iron Core Body 1 0 3 B Iron Core Body Placement Mold Casting Outlet Presented in the Republic of China in November 88B7_404866 ___ _Magneto-core Electromagnet Coil Electromagnet Coil Magnet Magnet Core Magnet Electromagnet Coil Electromagnet Coil Magnet Magnet (Please read the precautions on the back before filling this page) '衣 — —Order i ---.---- Thread paper size applicable to China Home Standard (CNS) A4 Specification (210 X 297 mm) -13- A7 4Q48.fia V. Description of Invention () B7 Printed by Shelley Consumer Cooperative of Intellectual Property Bureau, Ministry of Economic Affairs 1 0 4 A Upper magnetic pole 1 0 4 B Upper Magnetic pole 1 0 5 A Lower magnetic pole 1 0 5 B Lower magnetic pole 1 0 6 Magnetic field adjustment means 1 0 7 10 8 Bracket 1 0 9 Pivot pin 1 1 0 Hydraulic cylinder S Solidification shell S m Molten steel
(婧先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公釐） 13-1(Jing first read the notes on the back before filling out this page) This paper size is applicable to China National Standard (CNS) A4 (210 χ 297 mm) 13-1