200911414 九、發明說明： 【發明所屬之技術領域3 本發明涉及薄板鑄造裝置，涉及用於使金屬熔液通過 旋轉的兩個鑄造輥之間進行冷卻及凝固的薄板鑄造裝置。 5 【先前技術】 為了製造如鎂那樣的非鐵金屬及其合金的薄板，利用 使非鐵金屬的熔液通過旋轉的2個鑄造輥之間進行冷卻凝 固的薄板鑄造裝置。在使用這種薄板鑄造裝置時，在鑄造 輥之間分散並流動的熔液通過鑄造輥冷卻而開始凝固，最 10 後形成板材。 通過薄板鑄造裝置製造的板材由其工序條件以及製造 過程決定板材的厚度均勻度或有無缺陷等，目前的現狀是 正積極研究能夠形成具有可靠性的板材的方法。 L發明内容3 15 本發明的一個實施例提供一種控制形成在禱造報的邊 緣部表面的氧化物層的厚度來消除造成薄板表面缺陷的主 要因素的薄板鑄造裝置。 本發明的一個實施例提供一種能夠防止熔液向鑄造輥 的外側漏出的薄板鑄造裝置。 20 本發明的一個實施例提供一種能夠在喷嘴組件内控制 熔液的流動來得到薄板的最佳厚度形狀的薄板鑄造裝置。 根據本發明的一個實施例，薄板鑄造裝置包括：相互 隔開的一對鑄造輥；喷嘴組件，設置在上述鑄造輥之間形 成的流入部上，用於供給熔液；至少一個刷子組件，包括 200911414 在與上述鑄造輥對應的位置設置並可移動的旋轉軸、及安 裝在上述旋轉軸上的刷子；驅動部，使上述刷子組件的上 述旋轉轴旋轉；以及氣缸，使上述刷子組件向上述鑄造輥 表面移動。 5 i述薄板鑄造裝置還可以包括：氧化膜厚度測定部， 測定形成在上述鑄造輥表面的氧化膜的厚度；及控制部， 接收來自上述氧化膜厚度測定部的信號，根據上述信號有 選擇地驅動上述驅動部及上述氣缸。上述氧化膜厚度測定 部可以包括：與上述鑄造輕的邊緣部表面對應的傳感器， 10及從上述傳感器接收信號來計算形成在禱造觀表面的氧化 膜的厚度之後’向上述控制部傳遞計算結果的上述氧化膜 厚度的計算單元。 上述一對鑄造輥可以包括第一鑄造輥及第二鑄造輥。 上述至少-個刷子組件包括多個刷子組件，上述多個刷子 15組件包括與上述第-鎢造㈣應的第—刷子組件及斑上述 第二鑄雜對應的第二刷子組件。上述驅動單4括分別 與上述第-及第二刷子組件的旋轉軸連接並使之旋轉的第 一及第二驅動部、以及分別向第-鑄造輥及第二鑄造輥表 =動上述第-及第二刷子組件並使之密合在鑄造棍表面 20的第一及第二氣缸。 上述薄板铸造裝置還可以包括薄板缺_定單元，該 陷測定單元設置在從上述多個鑄造财排出的薄板 上，測定上述薄板表面上的缺陷，向控制部傳 、上14缺陷相關的信號。上述薄板缺陷測定單元可以是 200911414 目視傳感器。 根據本發明的一個實施例，薄板鑄造裝置包括：相互 隔開配置的第一鑄造輥及第二鑄造輥；喷嘴組件，設置在 上述第一鑄造輥及上述第二鑄造輥之間所形成的流入部 5 上，用於供給熔液；以及冷卻氣體喷射裝置，向上述熔液 供給冷卻氣體。 上述冷卻氣體噴射裝置可以設置在上述鑄造輥的排出 部兩側，並向被排出的薄板的兩邊緣部喷射冷卻氣體。 上述薄板鑄造裝置還可以包括：薄板缺陷測定單元， 10 設置在從上述第一及第二鑄造輥排出的薄板的運送路徑 上，測定薄板表面上的缺陷；以及控制部，與上述薄板缺 陷測定單元及上述冷卻氣體喷射裝置連接，根據來自上述 薄板缺陷測定單元的信號來控制上述冷卻氣體喷射裝置的 動作。 15 根據本發明的一個實施例，薄板鑄造裝置包括：相互 隔開配置的第一鑄造輥及第二鑄造輥；及喷嘴組件，設置 在上述第一鑄造輥及上述第二鑄造輥之間所形成的流入部 上，用於供給熔液。上述噴嘴組件包括相互隔開形成空間 的上部部件及下部部件、和配置在上述空間内並調節上述 20 溶液的流動的至少一個調節場。 上述各調節壩可以包括：位於上述内部空間的攪拌部 件；一端固定在上述攪拌部件上、另一端向上述喷嘴組件 外部露出的轴；及固定在上述轴的向外露出端並使上述攪 拌部件旋轉的旋鈕。 200911414 上述攪拌部件的兩前端可以具有尖銳的形狀。此外， 上述攪拌部件的寬度從上述兩前端向中央部逐漸增加。 這樣的根據本發明的一個實施例的薄板鑄造裝置執行 對於熔液的凝固脆弱區域即各鑄造輥邊緣部的研磨工序， 5 除去具有熱傳遞障礙膜的作用的氧化膜或減小氧化膜的厚 度，據此可以在鑄造輥邊緣部形成均勻的厚度的凝固角。 由此，可以生產邊緣部具有良好的質量的薄板。 此外，根據本發明的一個實施例的薄板鑄造裝置，在 發生邊緣壩的損傷時，向從鑄造輥排出的薄板喷射冷卻氣 10 體來強制冷卻熔液，從而抑制熔液過度地向外側漏出，進 而防止因此而製造寬度比所設定的寬度大的薄板。 此外，根據本發明的一個實施例的薄板鑄造裝置，在 熔液流動的喷嘴組件内設置熔液流動調節用壩，控制溶液 的流動，從而具有使薄板的橫截面厚度形狀維持適合壓延 15 工序的形狀的效果。結果，壓延工序之後得到的最終產品 當然可以具有均勻的厚度形狀。 圖式簡單說明 第1圖是根據本發明的一個實施例的薄板鑄造裝置的 立體圖。 20 第2圖是用於說明根據本發明的一個實施例的薄板鑄 造裝置的控制系統的框圖。 第3圖是根據本發明的一個實施例的薄板鑄造裝置的 立體圖。 第4圖是用於說明根據本發明的一個實施例的薄板鑄 200911414 造裝置的控制系統的框圖。 第5圖是根據本發明的一個實施例的薄板鑄造裝置的 立體圖。 第6圖是表示第5圖所示的薄板鑄造裝置的喷嘴組件結 5 構的俯視圖。 第7圖是第5圖所示薄板鑄造裝置的喷嘴組件的橫截面 圖。 第8圖是用於理論上說明薄板的最佳厚度形狀的薄板 截面圖。 10 第9圖是表示根據本發明的一個實施例的向邊緣部流 動過量的熔液的情況下構成調節壩的攪拌部件在噴嘴組件 内的配置狀態的圖。 【實施方式3 以下，參照附圖詳細說明薄板鑄造裝置，但是本發明 15 不限於下述的實施例。因此，所屬技術領域的普通技術人 員可以在不脫離本發明的技術思想的範圍内以多種形態體 現本發明。附圖中的構成要素的尺寸是為了強調本發明的 明確性而相對於實物進行放大表示的。構成要素被言及 “第一”及“第二”時，不是為了限定這些構成要素，而僅僅 20 是為了區分構成要素。因此，對於“第一”及“第二”構成要 素可以各自選擇性地或交換性地使用。 第1圖是根據本發明的一個實施例的薄板鑄造裝置的 立體圖，基於該實施例的薄板鑄造裝置包括上下配置並向 相反的方向旋轉的上部鑄造輥111和下部鑄造輥112、和設 200911414 置在上部鑄造棍ill及下部鑄造棍112的流入部用於供給炼 液的噴嘴組件113。上部鑄造輥1U及下部鑄造輥112配置成 隔開預定的間隔。 供給到噴嘴組件113内的熔液在喷嘴組件113内分散而 5通過上部鑄造輥Hi和下部鑄造輥112之間。這樣，從噴嘴 組件113内排出的熔液在通過上部鑄造輥η丨和下部鑄造輥 112之間的過程中冷卻凝固，然後以預定寬度的薄板形態從 上部鑄造輥111和下部鑄造輥112甲排出。 第2圖是用於說明根據本發明的一個實施例的薄板鑄 1〇造農置的控制系統的框圖，基於本發明的一實施例的薄板 鑄造裝置包括：用於測定形成在上部鑄造輥U1及下部鑄造 親112表面的氧化膜的厚度的氧化膜厚度測定部12〇 ;測定 薄板S上缺陷的薄板缺陷測定單元140 ;接收來自氧化膜厚 度測定部120和薄板缺陷測定單元140的信號的控制部13〇 ; 15刷子組件150 ;以及根據控制部130的控制進行動作而使刷 子組件150工作的驅動單元160。 若說明各構成部分的結構及功能則如下。 乳化膜厚度測定部120包括·設置在與上部鎮造棍1 u 鄰接位置上的第一傳感器121、設置在與下部鑄造輥112鄰 20接位置上的第二傳感器122、和分別與第一傳感器121及第 二傳感器122連接的氧化膜厚度計算單元123、124。 第一傳感器121及第二傳感器122對應於上部鑄造報 111及下部鑄造輥112的邊緣部，從而生成與形成在上部鑄 k幸tt 111及下部每造棍112的邊緣部表面上的氧化膜對麻的 200911414 信號。 在第一傳感器121及第二傳感器122中產生的信號分別 向氧化膜厚度計算單元123、124傳遞，在該氧化膜厚度計 算單元123、124中，基於被傳遞的信號計算形成在上部鑄 5造輥111及下部鑄造輥112的邊緣部表面上的氧化膜的厚 度。 薄板缺陷測定單元14〇設置在與從上部鑄造輥丨丨丨和下 部鑄造輥112排出的薄板S對應的位置即薄板S的運送路徑 上’測定有可能存在於薄板3的表面上的缺陷。執行這種功 10能的薄板缺陷測定單元140例如是目視傳感器。 與氧化膜厚度測定部12〇的氧化膜厚度計算單元123、 124和薄板缺陷測定單元14〇連接的控制部根據來自氧 化膜厚度計算單元m、m和薄板缺陷測定單元_的對於 氧化膜厚度和薄板缺陷的資訊來控制後述的刷子組件的動 15 作。 即，在上部鑄造輥ln及下部鑄造輥112的邊緣部表面 上形成有預定厚度以上的氧化膜的情況下，控制部13〇對其 進行判斷錢軒轉動作，將上部及下料雜⑴、U2 表面的氧化膜去除以至其達到預定厚度以下。 20 * if過這種過程，當判斷為形成在上部禱造報⑴及下部 禱造報112的邊緣部表面上的氧化膜減小到預定的厚度以 下％，控制部130使刷子組件的動作停止。 *根據從薄板缺陷測定單元14〇傳送的信號，當判斷為在 薄板S的表面上存在如由於上部及下部禱造親⑴ 、112邊緣 200911414 部表面上過度地形成的氧化膜而形成的薄板邊緣部的缺陷 那樣的缺陷時，控制部130使刷子組件動作，將上部及下部 鑄造輥111、112表面的氧化膜去除到預定厚度以下。 此外，通過刷子組件150，形成在上部鑄造輥111及下 5 部鑄造輥112的邊緣部表面的氧化膜減小到所設定的厚度 以下，並因此不能通過薄板缺陷測定單元140測定薄板表面 的缺陷時，控制部130使刷子組件150的動作停止。 利用第1圖說明刷子組件150的結構。 刷子組件150包括第一及第二刷子組件151、152。 10 第一及第二刷子組件151、152分別設置在與上部鑄造 輥111及下部鑄造輥112鄰接的位置，設置成可以朝著上部 鑄造輥111及下部鑄造輥112移動。 第一及第二刷子組件151、152分別相對於對應的上部 及下部鑄造輥111、112驅動，以下為了方便說明，僅例舉 15 第一刷子組件151來說明。 第一刷子組件151包括被設置成可朝向鑄造輥111移動 的旋轉軸151a及固定在旋轉軸151a上的至少一个刷子 151b、151c。隨著這種刷子組件151的旋轉即刷子151b、151c 的旋轉，鑄造輥111的表面被刷子151b、151c研磨。這裏， 20 在第1圖中，僅圖示了構成第二刷子組件152的刷子中的一 個刷子152b。但是，根據本發明的一個實施例，為了鑄造 輥的邊緣部表面研磨，刷子對應於鑄造輥的兩邊緣部的情 況下，刷子的數量沒有限制。 使第一及第二刷子組件151、152旋轉，也就是使旋轉 12 200911414 轴151a旋轉的驅動單元160包括··分別與第一及第二刷子組 件151、152的旋轉轴151a連接而使其旋轉的第一驅動部 161a與第二驅動部161b(參照第2圖）、以及使第一及第二刷 子組件151、152向上部鑄造輥111及下部鑄造輥112移動並 5 使其密合的第一氣缸162a及第二氣缸162b。 第一及第·一驅動部161a、161b和第一及第二氣缸162a、 162b與控制部130電連接，由此，控制部no控制第一及第 二驅動部161a、161b和第一及第二氣缸162a、162b的驅動。 如此構成的根據本發明的一個實施例的薄板鑄造裝置 10的整體的動作及各構成單元的具體功能利用各附圖進行說 明。 從喷嘴組件113排出的熔液在上部鑄造輥η丨和下部鑄 造輥112之間流動，在通過上部鑄造輥1U和下部鑄造輥112 的過程中，熔液被冷卻凝固而以預定寬度的薄板形態排出。 15 在執行這種工序的過程中，與上部鑄造輥iu及下部鑄 造輥Π2鄰接設置的第一傳感器121及第二傳感器122向氧 化膜厚度計算單元123、124傳送與形成在上部鑄造輥U1及 下部鑄造輥112的表面的氧化膜、特別是形成在邊緣部的氧 化膜對應的資訊(信號）。 '〇 氧化膜厚度計算單元123、124基於在第一傳感器121 及第二傳感器122中產生的信號，計算形成在上部及下部鑄 造輥111、112的邊緣部的氧化膜的厚度，並向控制部13〇傳 送該計算出的結果。 在從氧化膜厚度計算單元123、124傳送的上部鑄造輥 13 200911414 111及下部鑄造船12的邊緣部表面上的氧化膜厚度是設定 值以上的情況下，控制部130對其進行判斷而使驅動部動 作’也就是說，使與第_及第二刷子組件151、152的旋轉 軸151a連接的第一及第二驅動部161a、161b和第一及第二 5 氣缸162a、162b動作。 因此，第一及第二刷子組件151、152的刷子151b、i5lc 與上部鑄造m 11及下部鑄造輥112邊緣部表面接觸的同時 方疋轉，其結果形成在上部鑄造輥U1及下部鑄造輥112的邊 緣部表面上的氧化膜被去除或其厚度減小。 10 通過這種過程，若形成在上部鑄造輥111及下部鑄造輥 112的邊緣部表面的氧化膜的厚度減至設定值以下時，控制 部130停止第一及第二驅動部161a、161b和第一及第二氣缸 162a、162b的動作，使第一及第二刷子組件151、152與上 部鑄造輥ill及下部鑄造輥112隔開，並且停止刷子15ib、 15 151c的旋轉。 另一方面，設置在通過上部鑄造輥ιη及下部鑄造輥 112而運送的薄板s的運送路徑上的薄板缺陷測定單元14〇 測定可存在於薄板S的表面上的缺陷、即由於上部及下部鑄 造輥111、112的邊緣部上過度地形成的氧化膜而形成的薄 20板邊緣部的缺陷，並向控制部130傳遞該信號。 控制部130基於從薄板缺陷測定單元140傳送的信號判 斷是否存在薄板缺陷，當判斷為存在缺陷時，控制部13〇使 苐一及第一驅動部161a、161b和第一及第二氣缸162a、162b 動作而實施上述的過程，將上部及下部鑄造輥丨^、112的 14 200911414 邊緣部表面的氧化膜去除以至其達到預定厚度以下。 通過這種研磨過程，妨礙熔液的熱傳遞到上部及下部 鑄造輥111、112的熱傳遞障礙膜即形成在上部鑄造輥lu及 下部鑄造輥112的邊緣部表面的氧化膜的厚度減小。 5 因此，熔液的熱向上部及下部鑄造輥1U、U2特別是 由於冷卻能較小而延遲凝固的各邊緣部有效地傳遞，從而 在上部及下部鑄造輥1U、112的邊緣部也均句地形成炼液 的凝固角，結果不產生薄板的邊緣部缺陷。 第3圖是根據本發明的一個實施例的薄板禱造装置的 10立體圖。參照第3圖，薄板鑄造裝置包括上部鑄造輥211、 下部鑄造輥犯及喷嘴組件川。第3圖的薄板禱造裝置與第 1及第2圖的薄板鑄造裝置類似，在相同的部分使用相同的 附圖符號，省略其詳細的說明。 在噴嘴組件213的兩側設有用於防止，炫液向外側漏出 15的、由耐火物質構成的邊緣壩（未圖示）。另外，在上部鑄造 輥211和下部鑄造輥加的排出部兩側部分別設有用於喷^ 冷卻氣體的冷卻氣體喷射|置22卜222。冷卻氣體喷射裝 置221、222從外部接收冷卻氣體，並與後述的控制部電遠 接。 20 因此’根據控制部的控制信號，冷卻氣體喷射裝置221、 222向從上部鑄造輕211和下部鑄造報212排出的薄板s 邊緣部噴射冷卻氣體。 第4圖是用於說明根據本發明的一個實施例的薄 造裝置的控制系統的框圖，如上說明那樣，基於本發明: 15 200911414 一個實施例的薄板鑄造裝置包括：設置在鑄造輥211、212 的排出部兩側部的冷卻氣體噴射裝置221、222，控制冷卻 氣體喷射裝置221、222的動作的控制部223，以及設置在薄 板S的移動路徑上並測定薄板的邊緣部上的缺陷的薄板缺 5 陷測定單元224。 设置在鑄造輥211、212的排出部兩側部的冷卻氣體噴 射裝置221、2U分別對應於從鑄造輥川、212排出的薄板 2S的兩邊緣部’從外部被供給冷卻氣體。 根據控制部223的控制信號，安裝在冷卻氣體喷射裝置 10 221、222的内部的如閥那樣的流量控制單元動作，由此， 可以控制通過冷卻氣體噴射裝置221、222排出的冷命氣體 的喷射量及喷射時間。這裏，冷卻氣體的種類例如是氮氣、 薄板缺陷測定單元224設置在與從上部鑄造輥2ΐι和 15部鑄造輥212排出的薄板s對應的位置即薄板S的運送下 上，測定有可能存在於薄板S的表面即兩邊緣部的缺=路傻 行這種功能的薄板缺陷測定單元224例如是目視傳感=執 與薄板缺陷測定單元224電連接的控制部223，同a、 氣體噴射裝置221、222電連接而控制冷卻氣體噴射^卻 2〇 221、222的工作。 、 、置 骏置 進行說 這樣構成的根據本發明的一個實施例的薄板矯造 的整體的動作及各構成單元的具體功能利用各附圖BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin-plate casting apparatus, and relates to a thin-plate casting apparatus for cooling and solidifying between two casting rolls for rotating molten metal. 5 [Prior Art] In order to produce a thin plate of a non-ferrous metal such as magnesium and an alloy thereof, a thin plate casting apparatus which cools and solidifies a molten metal of a non-ferrous metal by rotating between two casting rolls is used. In the case of using such a thin plate casting apparatus, the molten metal which is dispersed and flowed between the casting rolls is solidified by the casting rolls to be solidified, and finally the sheet is formed. The sheet material produced by the thin-plate casting apparatus determines the thickness uniformity or the presence or absence of defects of the sheet material by the process conditions and the manufacturing process, and the current state of the art is actively studying a method capable of forming a sheet having reliability. SUMMARY OF THE INVENTION 3 An embodiment of the present invention provides a thin-plate casting apparatus which controls the thickness of an oxide layer formed on the surface of the edge portion of the prayer sheet to eliminate the main factor causing surface defects of the sheet. One embodiment of the present invention provides a thin plate casting apparatus capable of preventing molten metal from leaking to the outside of a casting roll. An embodiment of the present invention provides a thin plate casting apparatus capable of controlling the flow of molten metal in a nozzle assembly to obtain an optimum thickness shape of a thin plate. According to an embodiment of the present invention, a thin plate casting apparatus includes: a pair of casting rolls spaced apart from each other; a nozzle assembly disposed on an inflow portion formed between the casting rolls for supplying a molten metal; at least one brush assembly including 200911414 a rotatable shaft that is movable and movable at a position corresponding to the casting roller, and a brush attached to the rotating shaft; a driving portion that rotates the rotating shaft of the brush assembly; and a cylinder that causes the brush assembly to cast toward the casting The surface of the roller moves. The thin plate casting apparatus may further include: an oxide film thickness measuring unit that measures a thickness of the oxide film formed on the surface of the casting roll; and a control unit that receives a signal from the oxide film thickness measuring unit and selectively receives the signal according to the signal The drive unit and the cylinder are driven. The oxide film thickness measuring unit may include a sensor corresponding to the surface of the cast light edge portion, and 10, and receiving a signal from the sensor to calculate a thickness of an oxide film formed on the surface of the prayer surface, and transmitting a calculation result to the control unit. The calculation unit of the above oxide film thickness. The pair of casting rolls described above may include a first casting roll and a second casting roll. The at least one brush assembly includes a plurality of brush assemblies, and the plurality of brush assemblies 15 includes a second brush assembly corresponding to the first brush assembly of the first to tungsten (four) and the second casting. The driving unit 4 includes first and second driving portions respectively connected to the rotating shafts of the first and second brush assemblies, and rotating to the first casting roller and the second casting roller respectively. And the second brush assembly is brought into close contact with the first and second cylinders of the cast rod surface 20. The thin plate casting apparatus may further include a thin plate defect determining unit that is provided on the thin plate discharged from the plurality of casting materials, measures defects on the surface of the thin plate, and transmits signals related to the upper 14 defects to the control unit. The thin plate defect measuring unit may be a 200911414 visual sensor. According to an embodiment of the present invention, a thin plate casting apparatus includes: a first casting roll and a second casting roll disposed apart from each other; and a nozzle assembly disposed between the first casting roll and the second casting roll The portion 5 is for supplying a molten metal; and the cooling gas injection device supplies a cooling gas to the molten metal. The cooling gas spraying device may be disposed on both sides of the discharge portion of the casting roll, and spray the cooling gas to both edge portions of the discharged sheet. The thin plate casting apparatus may further include: a thin plate defect measuring unit, 10 disposed on a conveying path of the thin plate discharged from the first and second casting rolls, and measuring a defect on the surface of the thin plate; and a control unit and the thin plate defect measuring unit The cooling gas injection device is connected, and the operation of the cooling gas injection device is controlled based on a signal from the thin-plate defect measuring unit. According to an embodiment of the present invention, a thin plate casting apparatus includes: a first casting roll and a second casting roll disposed apart from each other; and a nozzle assembly formed between the first casting roll and the second casting roll The inflow portion is used to supply the melt. The nozzle assembly includes an upper member and a lower member spaced apart from each other to form a space, and at least one adjustment field disposed in the space and regulating the flow of the 20 solution. Each of the adjustment dams may include: a stirring member located in the inner space; a shaft fixed at one end to the agitating member and exposed at the other end to the outside of the nozzle assembly; and fixed to an outwardly exposed end of the shaft and rotating the agitating member Knob. 200911414 Both front ends of the above stirring member may have a sharp shape. Further, the width of the agitating member gradually increases from the both distal ends toward the central portion. Such a thin plate casting apparatus according to an embodiment of the present invention performs a grinding process for a solidified fragile region of a molten metal, that is, an edge portion of each casting roll, 5 removing an oxide film having a function of a heat transfer barrier film or reducing a thickness of the oxide film According to this, a solidification angle of a uniform thickness can be formed at the edge portion of the casting roll. Thereby, a thin plate having a good quality at the edge portion can be produced. Further, according to the thin plate casting apparatus of one embodiment of the present invention, when the edge dam is damaged, the cooling gas 10 is sprayed toward the thin plate discharged from the casting roll to forcibly cool the molten metal, thereby suppressing the molten metal from leaking excessively to the outside. Further, it is prevented to manufacture a thin plate having a width larger than the set width. Further, according to the thin plate casting apparatus of one embodiment of the present invention, the melt flow regulating dam is provided in the nozzle assembly in which the melt flows, and the flow of the solution is controlled so as to maintain the cross-sectional thickness shape of the thin plate suitable for the rolling 15 process. The effect of the shape. As a result, the final product obtained after the calendering process can of course have a uniform thickness shape. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a thin plate casting apparatus according to an embodiment of the present invention. 20 Fig. 2 is a block diagram for explaining a control system of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 3 is a perspective view of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 4 is a block diagram for explaining a control system of a thin plate casting 200911414 manufacturing apparatus according to an embodiment of the present invention. Fig. 5 is a perspective view of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 6 is a plan view showing the structure of a nozzle assembly of the thin-plate casting apparatus shown in Fig. 5. Fig. 7 is a cross-sectional view showing the nozzle assembly of the thin plate casting apparatus shown in Fig. 5. Fig. 8 is a sectional view of a thin plate for theoretically explaining the optimum thickness shape of the thin plate. Fig. 9 is a view showing an arrangement state of a stirring member constituting the regulating dam in the nozzle unit in the case where an excessive amount of molten metal flows to the edge portion according to an embodiment of the present invention. [Embodiment 3] Hereinafter, a thin plate casting apparatus will be described in detail with reference to the drawings, but the present invention 15 is not limited to the following embodiments. Therefore, the present invention can be embodied in various forms within the scope of the technical idea of the present invention without departing from the technical idea of the present invention. The dimensions of the constituent elements in the drawings are shown enlarged to the actual matter in order to emphasize the clarity of the present invention. When the constituent elements are referred to as "first" and "second", it is not intended to limit these constituent elements, but only 20 is to distinguish constituent elements. Thus, the "first" and "second" constituent elements can each be used selectively or interchangeably. 1 is a perspective view of a thin plate casting apparatus according to an embodiment of the present invention, the thin plate casting apparatus according to this embodiment includes an upper casting roll 111 and a lower casting roll 112 which are arranged up and down and rotated in opposite directions, and is provided with 200911414 The inflow portion of the upper casting bar ill and the lower casting bar 112 is used to supply the nozzle assembly 113 for refining. The upper casting roll 1U and the lower casting roll 112 are disposed to be spaced apart by a predetermined interval. The melt supplied into the nozzle assembly 113 is dispersed in the nozzle assembly 113 and passed between the upper casting roll Hi and the lower casting roll 112. Thus, the melt discharged from the nozzle assembly 113 is cooled and solidified in the process of passing between the upper casting roll η 丨 and the lower casting roll 112, and then discharged from the upper casting roll 111 and the lower casting roll 112 in the form of a thin plate of a predetermined width. . 2 is a block diagram for explaining a control system of a thin-plate cast 1 according to an embodiment of the present invention, and a thin-plate casting apparatus according to an embodiment of the present invention includes: for measuring an upper casting roll An oxide film thickness measuring unit 12 that measures the thickness of the oxide film on the surface of the lower casting contact 112; a thin plate defect measuring unit 140 that measures the defect on the thin plate S; and receives signals from the oxide film thickness measuring unit 120 and the thin plate defect measuring unit 140. The control unit 13A; 15 brush assembly 150; and a drive unit 160 that operates to control the brush unit 150 in accordance with the control of the control unit 130. The structure and function of each component are as follows. The emulsion film thickness measuring unit 120 includes a first sensor 121 disposed at a position adjacent to the upper build-up stick 1 u, a second sensor 122 disposed at a position adjacent to the lower casting roll 112, and a first sensor 121 and oxide film thickness calculation units 123 and 124 connected to the second sensor 122. The first sensor 121 and the second sensor 122 correspond to the edge portions of the upper casting sheet 111 and the lower casting roll 112, thereby generating an oxide film pair on the surface of the edge portion formed on the upper portion and the lower portion of each of the sticks 112. Hemp's 200911414 signal. The signals generated in the first sensor 121 and the second sensor 122 are respectively transmitted to the oxide film thickness calculating units 123 and 124, and in the oxide film thickness calculating units 123 and 124, based on the transmitted signals, the calculation is performed on the upper casting 5 The thickness of the oxide film on the surface of the edge portion of the roller 111 and the lower casting roller 112. The thin-plate defect measuring unit 14 is disposed on the transport path of the thin plate S, which is a position corresponding to the thin plate S discharged from the upper casting roll 丨丨丨 and the lower casting roll 112, and measures defects which may exist on the surface of the thin plate 3. The thin plate defect measuring unit 140 that performs such work is, for example, a visual sensor. The control portion connected to the oxide film thickness calculating units 123 and 124 and the thin-plate defect measuring unit 14A of the oxide film thickness measuring portion 12A is based on the thickness of the oxide film from the oxide film thickness calculating unit m, m and the thin-plate defect measuring unit_ The information on the sheet defects is used to control the movement of the brush unit described later. In other words, when an oxide film having a predetermined thickness or more is formed on the surface of the edge portion of the upper casting roll ln and the lower casting roll 112, the control unit 13 detects the Qianxuan turning operation, and the upper and lower materials are mixed (1). The oxide film on the U2 surface is removed so that it reaches a predetermined thickness or less. 20 * If the process is such that when the oxide film formed on the surface of the edge portion of the upper prayer report (1) and the lower prayer report 112 is reduced to a predetermined thickness or less, the control portion 130 stops the operation of the brush assembly. . * According to the signal transmitted from the thin-plate defect measuring unit 14, when it is judged that there is a thin plate edge formed on the surface of the thin plate S as an excessively formed oxide film on the surface of the upper and lower praying (1), 112 edge 200911414 In the case of a defect such as a defect, the control unit 130 operates the brush unit to remove the oxide film on the surfaces of the upper and lower casting rolls 111 and 112 to a predetermined thickness or less. Further, by the brush assembly 150, the oxide film formed on the surface of the edge portion of the upper casting roll 111 and the lower five casting rolls 112 is reduced to the set thickness or less, and thus the defect of the surface of the thin plate cannot be measured by the thin plate defect measuring unit 140. At this time, the control unit 130 stops the operation of the brush unit 150. The structure of the brush assembly 150 will be described using FIG. Brush assembly 150 includes first and second brush assemblies 151, 152. The first and second brush assemblies 151, 152 are respectively disposed adjacent to the upper casting roll 111 and the lower casting roll 112, and are disposed to be movable toward the upper casting roll 111 and the lower casting roll 112. The first and second brush assemblies 151, 152 are driven relative to the respective upper and lower casting rolls 111, 112, respectively, and for convenience of explanation, only the first brush assembly 151 will be described. The first brush assembly 151 includes a rotating shaft 151a that is disposed to be movable toward the casting roll 111 and at least one brush 151b, 151c that is fixed to the rotating shaft 151a. With the rotation of the brush assembly 151, that is, the rotation of the brushes 151b, 151c, the surface of the casting roll 111 is ground by the brushes 151b, 151c. Here, in Fig. 1, only one of the brushes 152b constituting the second brush assembly 152 is illustrated. However, according to an embodiment of the present invention, in order to grind the edge portion surface of the casting roll, the brush corresponds to both edge portions of the casting roll, and the number of brushes is not limited. The driving unit 160 that rotates the first and second brush assemblies 151, 152, that is, rotates the rotation 12 200911414 shaft 151a, includes, respectively, is coupled to the rotation shaft 151a of the first and second brush assemblies 151, 152 to rotate The first driving unit 161a and the second driving unit 161b (see FIG. 2) and the first and second brush assemblies 151 and 152 are moved to the upper casting roll 111 and the lower casting roll 112 to be in close contact with each other. One cylinder 162a and second cylinder 162b. The first and first driving units 161a and 161b and the first and second cylinders 162a and 162b are electrically connected to the control unit 130, whereby the control unit no controls the first and second driving units 161a and 161b and the first and the second The driving of the two cylinders 162a, 162b. The overall operation of the thin-plate casting apparatus 10 according to an embodiment of the present invention thus constructed and the specific functions of the respective constituent units will be described using the respective drawings. The melt discharged from the nozzle assembly 113 flows between the upper casting roll η丨 and the lower casting roll 112, and during the passage of the upper casting roll 1U and the lower casting roll 112, the molten metal is cooled and solidified to a thin plate shape of a predetermined width. discharge. In the process of performing such a process, the first sensor 121 and the second sensor 122 disposed adjacent to the upper casting roll iu and the lower casting roll 2 are transferred to the oxide film thickness calculating units 123 and 124 and formed on the upper casting roll U1. The oxide film on the surface of the lower casting roll 112, in particular, the information (signal) corresponding to the oxide film formed at the edge portion. The 〇 oxide film thickness calculating units 123 and 124 calculate the thickness of the oxide film formed at the edge portions of the upper and lower casting rolls 111 and 112 based on the signals generated in the first sensor 121 and the second sensor 122, and to the control unit. 13〇 Transfer the calculated result. When the thickness of the oxide film on the surface of the edge portion of the upper casting roll 13 200911414 111 and the lower casting ship 12 transmitted from the oxide film thickness calculating units 123 and 124 is equal to or greater than the set value, the control unit 130 determines the drive and drives the drive film 130. The partial operation 'that is, the first and second driving portions 161a and 161b and the first and second fifth cylinders 162a and 162b that are connected to the rotating shaft 151a of the first and second brush assemblies 151 and 152 are operated. Therefore, the brushes 151b, i5lc of the first and second brush assemblies 151, 152 are in contact with the surface of the edge portions of the upper casting m 11 and the lower casting roller 112, and the result is formed in the upper casting roller U1 and the lower casting roller 112. The oxide film on the surface of the edge portion is removed or its thickness is reduced. When the thickness of the oxide film formed on the surface of the edge portion of the upper casting roll 111 and the lower casting roll 112 is reduced to a predetermined value or less, the control unit 130 stops the first and second driving units 161a and 161b and the first step. The operation of the first and second cylinders 162a, 162b separates the first and second brush assemblies 151, 152 from the upper casting roll ill and the lower casting roll 112, and stops the rotation of the brushes 15ib, 15 151c. On the other hand, the thin-plate defect measuring unit 14 provided on the transport path of the thin plate s transported by the upper casting roll and the lower casting roll 112 measures the defects which may exist on the surface of the thin plate S, that is, the upper and lower casting A defect of the edge portion of the thin 20 plate formed by the excessively formed oxide film on the edge portions of the rolls 111 and 112 transmits the signal to the control unit 130. The control unit 130 determines whether or not there is a thin plate defect based on the signal transmitted from the thin plate defect measuring unit 140. When it is determined that there is a defect, the control unit 13 causes the first driving unit 161a, 161b and the first and second cylinders 162a, The above process is carried out by the action of 162b, and the oxide film on the surface of the edge portion of the upper and lower casting rolls 、, 112 of 14 200911414 is removed to a predetermined thickness or less. By this grinding process, the heat transfer barrier film which hinders the heat transfer of the melt to the upper and lower casting rolls 111, 112, i.e., the thickness of the oxide film formed on the edge portions of the upper casting roll lu and the lower casting roll 112, is reduced. 5 Therefore, the hot upper portion and the lower casting rolls 1U, U2 of the melt are efficiently transmitted, in particular, due to the small cooling energy, and the edge portions of the upper and lower casting rolls 1U, 112 are also uniformly The solidification angle of the refining liquid is formed, and as a result, edge defects of the thin plate are not generated. Fig. 3 is a perspective view of a thin plate praying apparatus according to an embodiment of the present invention. Referring to Fig. 3, the thin plate casting apparatus includes an upper casting roll 211, a lower casting roll, and a nozzle assembly. The thin plate praying device of Fig. 3 is similar to the thin plate casting device of Figs. 1 and 2, and the same reference numerals are used for the same portions, and the detailed description thereof will be omitted. An edge dam (not shown) made of a refractory material for preventing leakage of the liquid to the outside 15 is provided on both sides of the nozzle unit 213. Further, cooling gas injection/discharge 22 for discharging the cooling gas is provided at both sides of the discharge portion of the upper casting roll 211 and the lower casting roll. The cooling gas injection devices 221 and 222 receive the cooling gas from the outside and are electrically remotely connected to a control unit to be described later. Therefore, the cooling gas injection devices 221 and 222 inject the cooling gas toward the edge portion of the thin plate s discharged from the upper casting light 211 and the lower casting portion 212 in accordance with the control signal from the control portion. Figure 4 is a block diagram for explaining a control system of a thinning apparatus according to an embodiment of the present invention, as explained above, based on the present invention: 15 200911414 The thin plate casting apparatus of one embodiment includes: disposed on a casting roll 211, The cooling gas injection devices 221 and 222 on both sides of the discharge portion of 212, the control unit 223 that controls the operation of the cooling gas injection devices 221 and 222, and the movement path provided on the thin plate S and measure the defects on the edge portion of the thin plate The thin plate lacks the measurement unit 224. The cooling gas injection devices 221 and 2U provided at both side portions of the discharge portions of the casting rolls 211 and 212 respectively supply cooling gas from the outside corresponding to both edge portions of the thin plate 2S discharged from the casting rolls 212. According to the control signal of the control unit 223, the flow rate control unit such as a valve mounted inside the cooling gas injection devices 10 221 and 222 operates, whereby the injection of the cold gas discharged through the cooling gas injection devices 221 and 222 can be controlled. Volume and injection time. Here, the type of the cooling gas is, for example, nitrogen gas, and the thin-plate defect measuring unit 224 is provided under the conveyance of the thin plate S corresponding to the thin plate s discharged from the upper casting rolls 2 and 15 of the casting rolls 212, and the measurement may be present on the thin plate. The thin plate defect measuring unit 224 having the function of the surface of the S, that is, the missing edge of the two edge portions, is, for example, the visual sensing sensor = the control portion 223 electrically connected to the thin plate defect measuring unit 224, a, the gas ejecting device 221, The 222 is electrically connected to control the operation of the cooling gas jets 2, 221, 222. The overall operation of the thin plate forming according to one embodiment of the present invention and the specific functions of the respective constituent units are utilized in the drawings.
從喷嘴組件213排出的熔液向上部鑄造輥2ιι和下呷 16 200911414 造輥2丨2之聽給，在通過上部鑄綠叫和下料造輕扣 的過程中，炼液被冷卻凝固而以預定寬度的薄板形態排出。 *設置在通過上料魏211及下料造輥212而被運送 的薄板s的運送路徑上的薄板缺陷測定單元224測定可能存 5在於薄板S的表面上的缺陷，即，測定因邊緣壞的損傷而造 成熔液過度地向外側漏出，從而薄板的邊緣部向預定寬声 的外測突出的缺陷，並向控制部223傳遞該測定信號。 控制部223基於從薄板缺陷測定單元224傳遞的，梦列 斷是否存在薄板缺陷，若判斷為存在薄板缺陷，控制部 10 就使冷卻氣體噴射裝置221、222工作。 因此，向通過上部及下部鑄造輥211、212排出的未$ 全冷卻凝固的狀態的薄板的兩邊緣部喷射冷卻氣體，沾 ”、吉果' 薄板的兩邊緣部以比自然冷卻快的速度被冷卻。 15 如此通過被噴射的冷卻氣體，使通過邊緣壩的損傷的 部位向預定寬度的外側擴散漏出的熔液以較快的$ $ 卻，能夠預防薄板的邊緣部向外側突出而使薄板整 度増大到預定寬度以上的問題 體的寬 例如，根據薄板的兩邊緣部的缺陷程度，也就是_ 薄板的設定寬度突出的部分的程度，控制部223調節= 20 體噴射裝置221、222内的調節單元而調節冷卻氣體 、 量。例如可通過調節閥門的開閉程度來調節冷卻氣胃 …—一 一- . 一 .· 胃射 射量 的嘴 鑄造裝置的 的噴嘴挺件 第5圖是根據本發明的一個實施例的薄板 立體圖。第6圖是表示第5圖所示薄板鑄造裝置 17 200911414 的結構的俯視圖。：¾ μ α ^ 卜’第7圖疋苐5圖所示的根墟太路日日 的—個實施_薄_造裝置的喷嘴組件的横截面圖。且 體地’第6圖是表示在過量祕液向中央部移動的情況下、’ 構成調節賴掉部件在噴嘴組件内的配置狀態的橫截面 圖。 右參照第5圖’根據該實施例的薄板鑄造裝置包括：上 下配置而向相反的方向旋轉的上料造船11及下部鑄造 親312 ’以及設置在上部鑄造輥311及下部铸物12的流入 部，用於供給熔液的噴嘴組件313。 10 15 供給到喷t組件313内的炼液在喷嘴組件313内分散而 通過上部鑄雜311和下部鑄造輥312之間。這樣，從喷嘴 組件313内排出⑽液在通過上部鑄造輥311和下部鑄造輥 312的過程中被冷卻凝固，織以散寬度的薄板S形態從 上部鑄造輥311和下部鑄造輥312中排出。 、若參照第6圖，在喷嘴組件313的兩側設有用於防止溶 液向外側漏出的、由耐火物質構成的邊緣細4。 喷嘴組件313包括上部部件313a及下部部件咖，在喷 嘴組件313_部形成有由上料件恤及下部部件仙 形成的作為料的流動通道的空間3Ue。在喷嘴組件犯的 :空間3Uc中配置有至少一個調節壩32〇。調節壤32〇具 有调郎熔液的流動的功能。 =參㈣7圖，㈣㊣2嶋位於噴嘴崎阳的内部 二=的攪拌部件321、蚊錢拌部件321上的軸您及 在輪322的上端的旋鈕323。 20 200911414 調節壩320的軸322貫穿上部部件M3a或下 313b，其終端在外部露出，在露㈣終端 。件 拌部件321旋轉的旋鈕323。因此， 於使攪 C έ刼作者轉動位於嘖| 組件313__細時，_部細在噴嘴組件= 的内部空間313c中旋轉。 u 另一方面’第7圖中示出調節壩320的旋紐位於噴嘴％ 件3U的上部部件313a的上部，但是也可以設置成位於下部 部件咖的下部。但是，為了操作者容易操作旋蝴，優 選將旋鈕323設置成位於噴嘴組件313的上部部件仙的上 部。 如此構成的根據本發明的_實施例的薄板禱造裝置的 整體的動作及構成單元的具體功能彻各關進行說明。 從噴嘴組件3i3排出的熔液在上部鑄造輥311和下部鑄 造輥312之間流動，在通過上部鑄造輥311和下部鑄造輥312 15 的過程令，熔液被冷卻凝固，從而以預定厚度的薄板形態 排出。 但是’如上說明那樣’薄板的厚度被由上部及下部鑄 造輥311、312的熱變形及機械變形造成的輥間隙左右。第8 圖是用於理論上說明薄板的最佳厚度形狀的薄板截面圖。 20參照第8圖’若考慮薄板S在壓延過程令向寬度方向變形， 則從上部鑄造輥311和下部鑄造輥312排出的薄板S的形狀 如第8圖所示地中央部的厚度“比兩邊緣部的厚度Te大預 定的量為佳。 當由上部及下部鑄造輥3n、312的熱變形及機械變形 19 200911414 造成輥間隙變形，從而薄板s中央部的厚度Tc和兩邊緣部的 厚度Te的差超出設定值時，操作者藉由調節各調節壩32〇 來控制噴嘴組件313内的熔液的流動方向。 第6圖是表示過量的熔液向中央部流動時構成調節壩 5的攪拌部件在喷嘴組件内的配置狀態的圖。若參照第6圖， 薄板中央部的厚度Tc與兩邊緣部的厚度丁以目比厚到設定值 以上的狀態意示著向噴嘴組件313内部空間31允的中央部 流動過量的熔液。因此，操作者通過各調節壩32〇的旋鈕 323，使攪拌部件321旋轉，從而使更多的量的熔液向噴嘴 10 組件313的内部空間313c的兩邊緣部流動。 根據這種調節壩320的配置狀態即攪拌部件321的配置 狀態’更多的量的炼液向喷嘴組件313的内部空間仙的兩 邊緣部流動，結果，通過上部及下部鍀造親311、312而排 出的薄板的邊緣部的厚度增加，而具有如第8圖所示那樣的 15 最佳的厚度分布。 第9圖疋表不向邊緣部流動過量的炫液的情況下構成 調節壩的㈣部件在喷嘴組件内的配置狀態的圖。若參照 第9圖’則薄板s中央部的厚度Tc比兩邊緣部的厚度Te厚設 定值以下、或者中央部的厚度Tc與兩邊緣部的厚度Te相同 20的狀態意味著向喷嘴組件313的内部空間313c的兩邊緣部 流動過量的溶液。對此，操作者通過各調節塌no的旋紐323 旋轉攪拌部件321，截斷向兩邊緣部流動的部分熔液，使大 量的熔液向噴嘴組件313内部空間313c的中央部流動。 根據第9圖所示的這種調節壩32〇的配置狀態，大量的 20 200911414 熔液向喷嘴組件313内部空間313c的中央部流動，因此，通 過上部及下部鑄造輥311、312而排出的薄板S的中央部的厚 度增加，而具有如第8圖所示那樣的最佳的厚度分布。 例如，為了維持熔液順利的流動，優選將各調節壩320 5 的攪拌部件321做成流線形。即，如第9圖所示，攪拌部件 321的兩前端具有幾乎沒有其寬度的尖銳的形狀，但是具有 其寬度向中央部逐漸增加的形狀。 工業可利用性 如上所述的根據本發明一個實施例的薄板鑄造裝置執 10 行對於熔液的凝固脆弱區域即各鑄造輥邊緣部的研磨工 序，除去具有熱傳遞障礙膜的作用的氧化膜或減小氧化膜 的厚度，因此可以在鑄造輥邊緣部形成均勻的厚度的凝固 角。由此，可以生產邊緣部具有良好質量的薄板。 此外，根據本發明的一個實施例的薄板鑄造裝置，在 15 發生邊緣壩的損傷時，向從鑄造輥排出的薄板喷射冷卻氣 體來強制冷卻熔液，從而抑制熔液過度地向外側漏出，進 而防止因此而製造寬度比所設定的寬度大的薄板。 此外，根據本發明的一個實施例的薄板鑄造裝置，在 熔液流動的喷嘴組件内設置熔液流動調節用壩，控制溶液 20 的流動，從而具有使薄板的橫截面厚度形狀維持適合壓延 工序的形狀的效果。結果，壓延工序之後得到的最終產品 當然可以維持均勻的厚度形狀。 t圖式簡單說明3 第1圖是根據本發明的一個實施例的薄板鑄造裝置的 21 200911414 立體圖。 第2圖是用於說明根據本發明的一個實施例的薄板鑄 造裝置的控制系統的框圖。 第3圖是根據本發明的一個實施例的薄板鑄造裝置的 5 立體圖。 第4圖是用於說明根據本發明的一個實施例的薄板鑄 造裝置的控制系統的框圖。 第5圖是根據本發明的一個實施例的薄板鑄造裝置的 立體圖。 10 第6圖是表示第5圖所示的薄板鑄造裝置的喷嘴組件結 構的俯視圖。 第7圖是第5圖所示薄板鑄造裝置的喷嘴組件的橫截面 圖。 第8圖是用於理論上說明薄板的最佳厚度形狀的薄板 15 截面圖。 第9圖是表示根據本發明的一個實施例的向邊緣部流 動過量的熔液的情況下構成調節壩的攪拌部件在喷嘴組件 内的配置狀態的圖。 【主要元件符號說明】 121···第一傳感器 122···第二傳感器 123、124···厚度計算單元 130··.控制部 140…缺陷測定單元 S…薄板 111…上部鑄造輥 112…下部鑄造輥 113…喷嘴組件 120…厚度測定部 22 200911414 150···刷子組件 223…控制部 15卜·*第一刷子組件 224…薄板缺陷測定單元 15 la…旋轉軸 311…上部鑄造輥 151b、151c、15¾…刷子 312…下部鑄造輥 152·"第二刷子組件 313…喷嘴組件 160…驅動單元 313a···上部部件 161 a…第一驅動部 313b…下部部件 16 lb…第二驅動部 313c···空間 162a…第一氣缸 314…邊緣塌 162b…第二氣缸 320…調節塌 211···上部鑄造輥 321…攪拌部件 212···下部鑄造輥 322…轴 213···噴嘴組件 221、222…冷卻氣體喷射裝置 323···旋钮 23The melt discharged from the nozzle assembly 213 is fed to the upper casting roll 2 ιι and the lower 呷 16 200911414 造 roller 2 丨 2, and the smelting liquid is cooled and solidified in the process of making the light buckle through the upper cast green and the lower material. The sheet shape of the predetermined width is discharged. * The thin plate defect measuring unit 224 provided on the transport path of the thin plate s transported by the loading feed 211 and the blanking roll 212 measures the defect on the surface of the thin plate S, that is, the edge is broken. The damage causes the melt to leak excessively to the outside, so that the edge portion of the thin plate protrudes toward the predetermined wide external sound, and transmits the measurement signal to the control portion 223. The control unit 223 operates on the thin film defect measuring unit 224 to determine whether or not there is a thin plate defect, and if it is determined that there is a thin plate defect, the control unit 10 operates the cooling gas injection devices 221 and 222. Therefore, the cooling gas is sprayed to both edge portions of the thin plate which is discharged through the upper and lower casting rolls 211, 212 in a state of not being fully cooled and solidified, and both edge portions of the thin plate of "Jiguo" are faster than natural cooling. Cooling. 15 By the sprayed cooling gas, the molten portion that has passed through the damaged portion of the edge dam is diffused to the outside of the predetermined width by a relatively fast $$, thereby preventing the edge portion of the thin plate from protruding outward and making the thin plate The width of the problem body which is larger than the predetermined width is, for example, the degree of the defect at both edge portions of the thin plate, that is, the extent to which the set width of the thin plate protrudes, and the control portion 223 adjusts the inside of the body ejection device 221, 222 Adjusting the unit to adjust the cooling gas and the amount. For example, the cooling gas can be adjusted by adjusting the degree of opening and closing of the valve. - One-to-one. The nozzle of the mouth casting device of the gastric injection amount is shown in Figure 5. Fig. 6 is a plan view showing the structure of a thin plate casting device 17 200911414 shown in Fig. 5. 3⁄4 μ α ^ 卜 '7th Figure 5 is a cross-sectional view of the nozzle assembly of the implementation of the ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A cross-sectional view of the arrangement state of the adjustment-removing member in the nozzle assembly. The right reference to Fig. 5' The thin-plate casting apparatus according to this embodiment includes: a loading ship 11 and a lower portion which are arranged up and down to rotate in opposite directions The casting pro 312' and the inflow portion provided in the upper casting roll 311 and the lower casting 12, and the nozzle assembly 313 for supplying the melt. 10 15 The refining liquid supplied into the injection t-assembly 313 is dispersed in the nozzle assembly 313 Between the upper casting 311 and the lower casting roll 312. Thus, the liquid discharged from the nozzle assembly 313 is cooled and solidified in the process of passing through the upper casting roll 311 and the lower casting roll 312, and is woven in a thin plate S shape from the upper portion. The casting roll 311 and the lower casting roll 312 are discharged. When referring to Fig. 6, a thin edge 4 made of a refractory material for preventing the solution from leaking to the outside is provided on both sides of the nozzle unit 313. The nozzle assembly 313 is provided. The upper member 313a and the lower member are formed with a space 3Ue as a flow passage formed by the upper member and the lower member in the nozzle assembly 313_. At least one adjustment is arranged in the space 3Uc of the nozzle assembly. The dam is 32 〇. The regulation of the soil 32 〇 has the function of regulating the flow of the melt. = Ref. (4) 7, (4) Zheng 2 嶋 is located in the inside of the nozzle Qiyang = the stirring part 321 , the shaft on the mosquito mixing part 321 The knob 323 at the upper end of the wheel 322. 20 200911414 The shaft 322 of the regulating dam 320 penetrates the upper part M3a or the lower part 313b, the terminal of which is exposed to the outside, and is exposed at the end of the dew (four). A knob 323 that rotates the mixing member 321 . Therefore, when the rotation of the stirring device is located at the 啧| assembly 313__, the _ portion is rotated in the internal space 313c of the nozzle assembly=. On the other hand, in Fig. 7, the knob of the regulating dam 320 is located at the upper portion of the upper member 313a of the nozzle member 3U, but may be disposed at the lower portion of the lower member. However, in order for the operator to easily manipulate the convolution, it is preferable to set the knob 323 to be located above the upper part of the nozzle assembly 313. The overall operation of the thin plate praying apparatus according to the embodiment of the present invention and the specific functions of the constituent elements are described in detail. The melt discharged from the nozzle unit 3i3 flows between the upper casting roll 311 and the lower casting roll 312, and the molten metal is cooled and solidified by the process of passing the upper casting roll 311 and the lower casting roll 312 15 to thereby form a thin plate having a predetermined thickness. Form discharge. However, as described above, the thickness of the thin plate is affected by the roll gap caused by the thermal deformation and mechanical deformation of the upper and lower casting rolls 311 and 312. Fig. 8 is a sectional view of a thin plate for theoretically explaining the optimum thickness shape of the thin plate. 20, referring to FIG. 8 'When the thin plate S is deformed in the width direction in the rolling process, the shape of the thin plate S discharged from the upper casting roll 311 and the lower casting roll 312 is as shown in Fig. 8 The thickness Te of the edge portion is preferably a predetermined amount. When the roll gap is deformed by the thermal deformation of the upper and lower casting rolls 3n, 312 and the mechanical deformation 19 200911414, the thickness Tc of the central portion of the thin plate s and the thickness of the both edge portions Te When the difference exceeds the set value, the operator controls the flow direction of the melt in the nozzle unit 313 by adjusting each of the adjustment dams 32. Fig. 6 is a view showing the stirring of the adjustment dam 5 when the excess melt flows toward the center. A view of the arrangement state of the components in the nozzle assembly. Referring to Fig. 6, the thickness Tc of the central portion of the thin plate and the thickness of both edge portions are shown to be larger than the set value by the thickness to the upper space of the nozzle assembly 313. The central portion of the flow allows excess melt to flow. Therefore, the operator rotates the agitating member 321 through the knob 323 of each adjusting dam 32〇, thereby causing a larger amount of molten metal to the internal space 313c of the nozzle 10 assembly 313. According to the arrangement state of the adjustment dam 320, that is, the arrangement state of the agitation member 321, a larger amount of refining liquid flows toward both edge portions of the internal space of the nozzle unit 313, and as a result, the upper and lower portions are passed. The thickness of the edge portion of the thin plate discharged by the aging 311, 312 is increased, and has the 15th optimum thickness distribution as shown in Fig. 8. Fig. 9 shows the case where excessive scent is not flowed to the edge portion. Fig. 9 is a view showing a state in which the components of the adjustment dam are arranged in the nozzle assembly. When referring to Fig. 9, the thickness Tc of the central portion of the thin plate s is set to be smaller than the thickness Te of the both edge portions, or the thickness Tc of the central portion is two. The state in which the thickness Te of the edge portion is the same 20 means that an excessive amount of solution flows to both edge portions of the internal space 313c of the nozzle assembly 313. To this end, the operator rotates the stirring member 321 by the knob 323 of each adjustment collapse, and cuts off to the two. A part of the molten metal flowing through the edge portion causes a large amount of molten metal to flow toward the central portion of the internal space 313c of the nozzle unit 313. According to the arrangement state of the regulating dam 32〇 shown in Fig. 9, a large number of 20 20091 Since the melt flows into the central portion of the internal space 313c of the nozzle unit 313, the thickness of the central portion of the thin plate S discharged through the upper and lower casting rolls 311 and 312 is increased, and the best is as shown in Fig. 8. For example, in order to maintain a smooth flow of the melt, it is preferable that the agitating members 321 of the respective regulating dams 320 5 are streamlined. That is, as shown in Fig. 9, the both front ends of the agitating members 321 have almost no width. Sharp shape, but having a shape whose width gradually increases toward the central portion. INDUSTRIAL APPLICABILITY A thin plate casting apparatus according to an embodiment of the present invention as described above performs 10 rows of solidified fragile regions for molten metal, that is, edges of casting rolls In the polishing step of the portion, the oxide film having the function of the heat transfer barrier film is removed or the thickness of the oxide film is reduced, so that a solidification angle of a uniform thickness can be formed at the edge portion of the casting roll. Thereby, it is possible to produce a thin plate having a good quality at the edge portion. Further, according to the thin plate casting apparatus of one embodiment of the present invention, when the edge dam is damaged, the cooling gas is ejected to the thin plate discharged from the casting roll to forcibly cool the molten metal, thereby suppressing the molten metal from leaking excessively to the outside. It is thereby prevented to manufacture a thin plate having a width larger than the set width. Further, according to the thin plate casting apparatus of one embodiment of the present invention, the melt flow regulating dam is provided in the nozzle assembly in which the melt flows, and the flow of the solution 20 is controlled so as to maintain the cross-sectional thickness shape of the thin plate suitable for the calendering process. The effect of the shape. As a result, the final product obtained after the calendering process can of course maintain a uniform thickness shape. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a 21 200911414 thin plate casting apparatus according to an embodiment of the present invention. Fig. 2 is a block diagram for explaining a control system of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 3 is a perspective view of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 4 is a block diagram for explaining a control system of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 5 is a perspective view of a thin plate casting apparatus according to an embodiment of the present invention. Fig. 6 is a plan view showing the structure of a nozzle unit of the thin-plate casting apparatus shown in Fig. 5. Fig. 7 is a cross-sectional view showing the nozzle assembly of the thin plate casting apparatus shown in Fig. 5. Figure 8 is a cross-sectional view of a thin plate 15 for theoretically explaining the optimum thickness shape of the thin plate. Fig. 9 is a view showing an arrangement state of a stirring member constituting the regulating dam in the nozzle unit in the case where an excessive amount of molten metal flows to the edge portion according to an embodiment of the present invention. [Description of main component symbols] 121···First sensor 122···Second sensor 123, 124··· Thickness calculation unit 130··. Control unit 140... Defect measurement unit S... Thin plate 111... Upper casting roll 112... Lower casting roll 113...nozzle assembly 120...thickness measuring unit 22 200911414 150···brush unit 223...control unit 15·*first brush unit 224...sheet defect measuring unit 15 la...rotating shaft 311...upper casting roll 151b, 151c, 152⁄4...brush 312...lower casting roll 152·"second brush assembly 313...nozzle assembly 160...drive unit 313a···upper part 161 a...first drive unit 313b...lower part 16 lb...second drive unit 313c···Space 162a...first cylinder 314...edge collapse 162b...second cylinder 320...adjustment collapse 211···upper casting roller 321...stirring member 212···lower casting roller 322...shaft 213···nozzle assembly 221, 222... cooling gas injection device 323···knob 23