經濟部中央標準局負工消费合作社印製 A7 B7 五、發明説明（1 ) 〔技術之領域〕 本發明係與奥斯田系不銹鋼之連續鋳造方法有關：尤 其提出表面欠陷防止與高速鑄造兩立之連續鑄造方法。 〔先前之技術〕 不銹铜板，因其用途比其他一般鋼板强烈需要板面美 觀，故當連續製造不銹鋼板.時，亦須同時達成減少表面欠 令' 陷。先前減少奧斯田系不銹鋼之表面欠陷之技術已公知者 有如日本特開昭6 3 -1 9 2 5 3 7號公報揭示，自凝固 表層部之固相線溫度至少控制至1 2 0 0 °C之冷卻速度， 以達成奧·斯田粒之微細化之方法，或如特開平3 _ 4 2 1 5 0號公報掲示之控制溶鋼成分與溶鋼過熱度，同‘ 樣達成奧斯田粒微細化之方法。 然而，近年來對製品品質之要求逐漸嚴格，針對此要 求，僅個別控制冷卻速度或溶:鋼過熱度等，因依然有發.生 表面欠陷之可能，故無法稱爲理想。 —方面，近年，由於改進生產性觀點，對連續鎮造法 之提高鑄造速度之需求亦增高。惟提高鋳造速度時，有更 容易發生表面欠陷之傾向。故，先前，即使欲增加鑄造速 度，惟顧及表面品質卻無法增加，而仍以適當之基準，保 持宽裕選擇稍低之鋳造速度進行施工，以至無法達成生產 性之改進。 〔發明之目的〕 本紙張尺度逍用中國國家梂準（仁奶）八4规格（210父297公釐）_4_ ---------^-- (锖先閲讀背面之注意事項*-彡.舄本頁) 訂 線 316560 A7 B7 經濟部中央標準局貝工消费合作杜印«. 五、發明説明（2 ) 本發明之目的在有利解決連績鑄造奥斯田系不銹鋼時 之上述問題，並提出可同時達成高生產性及儍異之鋼板表 面品質之奧斯田系不銹鋼連嫌製造方法。 〔發明之方法〕 可達成上述目的之本發明之要旨構成如下° 即一種奧斯田系不銹鋼之連嫌製造方法，即將奧斯田 系不銹鋼之溶液自轉碟經浸潰备嘴注入連續鎮造機之連績 鑄造用鑄模內凝固後不斷抽出所定尺寸之鑄錠之連縝鑄造 法其特徵爲： 就鑄·造速度，轉碟內溶鋼過熱度，浸漬噴嘴排出孔斷 面積及鑄錠宽度，滿足下式 0 3〇^V0-58*W'°-04*AT*d'°-96^〇. 8 5 式中V :鏤造速度（m /'m i η ) W :鑄錠寬度（m m ) △ T :轉碟內溶鋼過熱度（°C) d :噴嘴排出孔斷面稹之平方根（mm ) 之條件，以高速連續鑄造。 本發明係鑄造速度V爲1. 2m/min以上時尤其 有利適合。- 又，本發明中，連績鑄造機爲垂直型雙皮帶式或塊狀 式薄鑄錠連績鑄造機時，滿足下式 ^紙張尺度逋用國國家梂準（CNS)A4规格（2丨0X297公釐）-5 - (请先閲讀背面之注意事項*-¥寫本頁) -裝· 訂 線 五、發明説明（3 ) A7 B7 5 Ο ^Υ〇·38. W-0.04. AT . ^-0.96^ 經濟部中央揉準局身工消費合作社印*. 之條件即可高速連績鏤造。 又，該連績鏤造機爲垂直雙皮帶式或塊狀式之薄鑄錠 連縯縳造機時，鑄造速度V爲3. Om /mi η以上，尤 其有利適合。 本發明之浸漬噴.嘴，以多ft噴嘴尤其有利適合，該多 孔噴嘴之排出孔斷面積即指連續鑄造用鑄模之鑲模短邊之 —方所相對之噴嘴開口之總斷面稹（例如，2孔噴嘴係一 側之噴嘴.開口之斷面椟，4孔噴嘴係相對於連續鑲造用鑲 模之鑄模短邊一方之2個噴嘴開口面積之合計）。 經硏究結果，發明人等得知鑄片表層部之奥斯田粒之 內部凝固組織之微細化，及因該微細化之不純物元素之微 量偏析之低減，對鏞片之表面谁狀或熱加工性之改進甚.爲 重要。又，該奧斯田粒內之凝'固組織，係樹枝狀，爲了將 其微細化，須控制對形成於連績鑲造機之鋳模內彎月部正 下方之初期凝固殼之依浸溃噴嘴排出孔之溶鋼噴流之入熱 量（Q m )。 更發現爲了控制該入熱量Qm，鏞模速度Vx溶鋼過 熱度ΛΤ，縳錠之宽度W，鑄模內浸溃噴嘴之排出孔斷面 積A爲重要之參數，即看出，由於控制胲4個參數以滿足 所定關係式，即使高鑄造速度，亦可獏得高品質鑄片。 入熱量Qm依日本熊田等（機械學會論文集，3 5 ( 請 先 閲 之 注 項 裝 訂 線 本紙張尺度適用中國國家揉準（CNS ) A4規格（210X 297公釐）-6 - 31β86〇 A7 B7 五、發明説明（4 ) , 1 9 6 9 ))，中戶等（鐵與鋼67 (1931) p. 1 2 0 〇 )之硏究。A7 B7 printed by the Consumer Labor Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention (1) [Technical Field] The present invention is related to the continuous manufacturing method of the Oustian stainless steel: in particular, the prevention of surface sinking and high-speed casting are proposed. Li Zhi continuous casting method. [Prior technology] Stainless copper plates, because their use is more demanding than other general steel plates, so when continuously manufacturing stainless steel plates, they must also achieve the reduction of surface defects. The technique for reducing the surface deflection of the Austenitic stainless steel has been known as disclosed in Japanese Unexamined Patent Publication No. 6 3 -1 9 2 5 3 7, and the solidus temperature of the self-solidified surface layer is controlled to at least 1 2 0 0 The cooling rate of ° C can be achieved by the method of achieving the refinement of the Austin grains, or by controlling the composition of the molten steel and the superheat of the molten steel as shown in Japanese Patent Laid-Open No. 3 _ 4 2 1 5 0. The method of miniaturization. However, in recent years, the requirements for product quality have become increasingly strict. In response to this requirement, only the cooling rate or the superheat of steel: steel, etc. are controlled individually. Since there is still a possibility of surface collapse, it cannot be called an ideal. On the other hand, in recent years, due to the improvement of productivity, the demand for continuous casting method to increase casting speed has also increased. However, when the speed of building is increased, there is a tendency for surface sinking to occur more easily. Therefore, in the past, even if we wanted to increase the casting speed, we could not increase the quality of the surface, but we still used an appropriate benchmark to maintain the marginal selection of a slightly lower construction speed for construction, so that we couldn't achieve productivity improvement. [Objective of the invention] The paper size is free to use the Chinese national standard (ren milk) 8 4 specifications (210 father 297 mm) _4_ --------- ^-(Read the notes on the back first * -彡. 舄 This page) Line 316560 A7 B7 Ministry of Economic Affairs Central Standards Bureau Beigong Consumer Cooperation Du Yin «. Fifth, the description of the invention (2) The purpose of the present invention is to help solve the above-mentioned problems when continuously casting the Oste stainless steel Problems, and put forward the production method of the Oustian stainless steel that can achieve high productivity and stupid steel plate surface quality at the same time. [Method of the invention] The gist of the present invention, which can achieve the above object, is constituted as follows: Namely, a continuous manufacturing method of the Oustian stainless steel, that is, the solution of the Oustian stainless steel is injected into the continuous town machine through the immersion nozzle The continuous casting method of continuously casting ingots of a certain size after solidification in the casting mold for continuous casting is characterized by: casting and manufacturing speed, superheat of molten steel in the rotating disc, the cross-sectional area of the discharge hole of the dipping nozzle and the width of the ingot Formula 0 3〇 ^ V0-58 * W '° -04 * AT * d' ° -96 ^ 〇. 8 5 where V: Sculpting speed (m / 'mi η) W: Ingot width (mm) △ T: superheat of molten steel in the rotating disc (° C) d: condition of square root (mm) of the cross section of the nozzle discharge hole, continuous casting at high speed. The present invention is particularly advantageous when the casting speed V is 1.2 m / min or more. -In addition, in the present invention, when the continuous casting machine is a vertical double-belt or block-type thin ingot continuous casting machine, it satisfies the following formula: ^ Paper Standard National Standards (CNS) A4 (2 丨0X297mm) -5-(Please read the precautions on the back *-¥ to write this page first)-Installation · Threading 5. Invention Instructions (3) A7 B7 5 Ο ^ Υ〇 · 38. W-0.04. AT. ^ -0.96 ^ The Ministry of Economic Affairs Central Bureau of Accreditation Bureau of Workers and Consumers Cooperatives printed *. Conditions can be high-speed continuous construction. In addition, when the continuous forming machine is a vertical double belt type or block type thin ingot continuous casting machine, the casting speed V is 3. Om / mi η or more, which is particularly advantageous. The immersion nozzle of the present invention is particularly advantageous for multi-ft nozzles. The cross-sectional area of the discharge hole of the porous nozzle refers to the total cross-section of the nozzle opening opposite to the side of the insert of the continuous casting mold (eg. , The 2-hole nozzle is the nozzle on one side. The cross-section of the opening, the 4-hole nozzle is the total area of the openings of the two nozzles with respect to the short side of the mold for continuous mounting molds). According to the research results, the inventors learned that the fineness of the internal solidification structure of the austenitic granules in the surface layer of the cast piece and the reduction of the micro segregation of the impure element in the fineness, the shape or heat of the surface of the yin sheet The improvement of workability is very important. In addition, the solidified structure in the Osteria grains is dendritic. In order to miniaturize it, it is necessary to control the impregnation of the initial solidified shell formed directly under the meniscus in the mandrel of the continuous machine The heat input (Q m) of the molten steel jet from the nozzle discharge hole. It is also found that in order to control the heat input Qm, the speed of the yoke mold Vx superheat degree of molten steel ΛT, the width W of the ingot, the cross-sectional area A of the discharge hole of the immersion nozzle in the mold are important parameters, that is to say, due to the control of 4 parameters To satisfy the relationship, even high casting speed, tapir can get high quality casting. The calorific value Qm is based on the Japanese Kumanda et al. (Proceedings of the Society of Mechanical Engineering, 3 5 (please read the note binding line book paper size is applicable to China National Standardization (CNS) A4 specifications (210X 297 mm) -6-31β86〇A7 B7 V. Description of the invention (4), 1 9 6 9)), Nakado et al. (Iron and Steel 67 (1931) p. 1 2 0 〇).
Q m = h m · Δ T hm=l·. 42(k/d)X (V η · d · ρ / η ) °·58Χ (C · η / Μ ),°·43Χ (X / ά ) -〇·62^?... ... ( ι ) 式中h m :熱傳導係數，Κ :殼之熱傳導度，ρ :溶 鋼密度，:溶鋼粘度，C :溶鋼比熱，d :噴嘴徑，Q m = hm · Δ T hm = l ·. 42 (k / d) X (V η · d · ρ / η) ° · 58Χ (C · η / Μ), ° · 43Χ (X / ά) -〇 · 62 ^? ... (ι) where hm: coefficient of thermal conductivity, κ: thermal conductivity of the shell, ρ: density of molten steel ,: viscosity of molten steel, C: specific heat of molten steel, d: nozzle diameter,
Vn :於排出孔之溶鋼流速，X :排出孔與衝突點之距離 0 經濟部中央揉準局貝工消費合作社印製 然而，上述（1 )式之參數，以連嫌鑄造機之鑄模內 之實際現象而言多靥未知，無进適用於實機。故發明人等 考慮使鑄造速度V與於排出孔/之溶鋼流速V η之關係成爲 V«Vn (V與Vn成正比。以下同），鋳錠之寬度W與 排出孔之溶鋼流速V η之關係爲W»V η，鏤錠之寬度W 與排出孔之衝突點之距離X之關係爲W〇〇X，及殻之熱傳 導度K，溶鋼密度P溶鋼粘度π，溶鋼比熱C之物性値均 爲一定，進行可適用於實際之連績鑄造機之結果，發現上 述（1)式可改寫爲如下（2)式。 9 m = V°·58* W'0 04· AT · d*0 96......... ( 2 ) 本紙張尺度逍用中國國家揉準（CNS)A4洗格（210X297公釐）-7 · A7 B7 經濟部中央橾準局員工消费合作社印製 五、發明説明（5 ) 式中，9m:入熱量之指數，V:鑄造速度（ m/min) ，W:鑄錠寬度（mm) ，ΔΤ:轉碟內溶 鋼過熱度（°C) ，d :噴嘴排出孔斷面積（2孔噴嘴之一 側）之平方根（m m ) 如此，由於就上述入熱置指數9m，予先求出不出現 表面欠陷之最大値，即可把握隨溶鋼過熱度，鑲錠寬度， 噴嘴排出孔斷面積之可確保鋼备品質之最大鑄造速度，而 可使高生產性，高品質兩立。又，入熱量指數9 m過小時 ，因模粉之溶解不充分，致未溶解之模粉附著於鑄片成爲 產生鋼板-表面欠陷之要因。因此，入熱量，由於該觀點， 以定下限値。茲將爲決定各該入熱量之上限値，下限値所 實施之實驗說明如下。 以表2所示浸漬噴嘴（2孔嘍嘴），鑄造速度，溶鋼 過熱度及鑄錠寬度之各種範圍:條件，實施成爲表1所示成 分組成之18wt%Cr—8wt%Ni鋼（SUS 0 0 4 )之鏤造。又，鑲錠厚度爲2 0 Omm。爲了調電 該連績縳造時所得鏤錠表層部之凝固組織之微細化程度， 檢査自鋳錠表面層4 mm深之凝固組織，以樹枝狀結晶第 2枝間隔之大小實施微細化之評價。然後實施依常法之熱 壓軋，汽壓軋，酸洗，製成板厚1. 4mm之製品提供表 面品質評價用之目視檢査。由該目視檢査調査鋼板之表面 瑕庇求欠陷發生率。該欠陷發生率係（欠陷之不良部分長 度）+ (鋼板全長）XI 0 0，成爲欠陷發生指數予以指 (請先閲讀背面之注意事項再>為本頁) .裝· 訂 線 本紙張尺度遥用中國國家標準（CNS ) A4規格（210X297公釐）_ 五、發明説明（6 ) 數化。 表1 成分 C Si.； Μη Ρ S wt % 0, 04〜0, 06 0, 50〜0. 70 0.9 〜JL6 0. 02〜0, 04 0.001 〜0.008 成分 Cr Ni 0 N Pe wt % 18.0 〜19.0 9.0 〜10.0 0: 002 〜0. 006 0. 015 〜0, 045 bal. (請先閲讀背面之注意事項#-彳寫本頁) 裝. 訂 經濟部中央揉準局貝工消費合作社印装 表2 縳模浸漬噴嘴1 每一側之排出孔面積：(咖2) 2500〜5000 排出角度！（。） 向下丨35〜向上丨10 鑄造速度i (m/min ) 0.6 〜1.6 溶鏑過熱度rc) 10 〜80 簿錠宽度丨（咖） 700 〜1300 五、發明説明（7 A7 B7 經濟部中央搮準局負工消费合作社印装 圚2〜5表示就連續鑄造縳錠之樹枝狀結晶第2枝間 隔分別以溶鋼過熱度△!*，鋳造速度V，鑄錠寬度W及噴 嘴排出孔斷面積（2孔噴嘴之每1孔之斷面稹）A爲參數 予以曲線化之上述實驗結果。由圚2〜5可看出鼸著溶鋼 過熱度ΛΤ，鑄造速度V及鑄錠宽度W之增加，及噴嘴排 出孔斷面稹A之減少，樹枝.狀結晶第2枝間隔有加大之傾 向，惟特別由觀察鐮造速度V&樹枝狀結晶第2枝間隔之 關係（圇3 )即可知，由於鑄錠寬度或溶鋼過熱度，又， 使用之浸溃噴嘴之排出孔徑不同，偏差大，以各個參數， 無法成爲·奧斯田粒微細化之指標，甚至表面品質之指標。 故，分別以各鏤造條件計算前述（2* )式所示之入熱 量指數9m，以圖6表示該入熱量指數9m與樹枝狀第2 枝間隔之關係之曲線化之結果。由同圖明瞭入熱量指數9 m，與壓軋板製品之表面欠陷:略對應之錯片表層下2〜.4 mm之樹枝狀結晶第2枝間隔有密切之關係。又，圖1表 示，該入熱量指數9 m與製品之表面欠陷發生率之關係之 綜合結果。由圖1，可知入熱量指數9 m亦與製品之表面 欠陷發生率有密切關係，更可知該入熱量指數9 m爲 0 · 8 5以下時可得良好之鋼板品質。如此，入熱量指數 9m爲0 . 8 5以下時，由圖6可知自表面4mm位置之 樹枝狀結晶第2枝間隔爲3 0 nm以下，又入熱量指數9 m爲0· 6以下時，樹枝狀第2枝間隔爲25nm以下， 更可減輕表面欠陷之發生。 請 先 閲 之 注 項 旁 裝 訂 線Vn: the molten steel flow rate at the discharge hole, X: the distance between the discharge hole and the conflict point 0 Printed by the Beigong Consumer Cooperative of the Central Bureau of Economics of the Ministry of Economic Affairs However, the parameters of the above formula (1) are included in the casting mold of the casting machine. As far as the actual phenomenon is concerned, many are unknown, and no progress is applicable to the actual machine. Therefore, the inventors considered that the relationship between the casting speed V and the molten steel flow rate V η at the discharge hole / becomes V «Vn (V is proportional to Vn. The same applies hereinafter), and the width W of the ingot and the molten steel flow rate V η at the discharge hole The relationship is W »V η, the relationship between the width W of the ingot and the distance X of the conflict point of the discharge hole is W〇〇X, and the thermal conductivity of the shell K, the density of the molten steel P, the viscosity of the molten steel π, and the specific heat of the molten steel C To be sure, we carried out results that can be applied to actual continuous casting machines, and found that the above formula (1) can be rewritten as the following formula (2). 9 m = V ° · 58 * W'0 04 · AT · d * 0 96 ......... (2) The size of this paper is easy to use China National Standard (CNS) A4 wash (210X297 mm ) -7 · A7 B7 Printed by the Consumer Cooperative of the Central Department of Economics of the Ministry of Economic Affairs 5. Description of the invention (5) In the formula, 9m: heat input index, V: casting speed (m / min), W: ingot width ( mm), ΔΤ: superheat of molten steel in the rotor (° C), d: square root (mm) of the nozzle discharge hole cross-sectional area (one side of the 2 hole nozzle). If the maximum value of no surface sinking occurs, the superheat degree of molten steel, the width of ingot, and the cross-sectional area of the nozzle discharge hole can ensure the maximum casting speed of the steel preparation quality, and it can achieve high productivity and high quality. In addition, if the heat input index is less than 9 m, the dissolution of the mold powder is insufficient, so that the undissolved mold powder adheres to the cast piece and becomes the main cause of the steel plate-surface sink. Therefore, the amount of heat input is based on this view, and the lower limit value is set. The experiments conducted to determine the upper and lower limits of the heat input are described below. Using the immersion nozzle (2-hole nipple) shown in Table 2, the casting speed, the superheat of molten steel and the width of the ingot width: the conditions are implemented as 18wt% Cr-8wt% Ni steel (SUS 0 0 4). In addition, the thickness of the ingot is 20 Omm. In order to adjust the degree of fineness of the solidified structure of the surface layer of the ingot obtained during the continuous performance, the solidified structure of 4 mm deep from the surface layer of the ingot was inspected, and the evaluation of the fineness of the second branch interval of the dendritic crystal was carried out . Then, hot-rolling, steam-rolling, and pickling were carried out according to the usual method, and a product with a thickness of 1.4 mm was prepared to provide a visual inspection for surface quality evaluation. This visual inspection investigates the incidence of surface defects on the steel plate. The occurrence rate of the defect is (the length of the defective part of the defect) + (the total length of the steel plate) XI 0 0, which is referred to as the occurrence index of the defect (please read the precautions on the back first >> for this page). This paper scale uses the Chinese National Standard (CNS) A4 specification (210X297mm) _ V. Description of invention (6) Digitization. Table 1 Composition C Si .; Μη Ρ S wt% 0, 04 ~ 0, 06 0, 50 ~ 0. 70 0.9 〜JL6 0.02 02 ~ 0, 04 0.001 〜0.008 Composition Cr Ni 0 N Pe wt% 18.0 ～ 19.0 9.0 ～ 10.0 0: 002 ～ 0. 006 0. 015 ～ 0, 045 bal. (Please read the precautions on the back #-彳 write this page) Packing. Order the printed form of the Beigong Consumer Cooperative Cooperative of the Central Ministry of Economic Affairs 2 Die-bonding dipping nozzle 1 Area of discharge hole on each side: (coffee 2) 2500 ~ 5000 discharge angle! (.) Down 丨 35 ~ Up 丨 10 Casting speed i (m / min) 0.6 ~ 1.6 Dysprosium superheat rc) 10 ~ 80 Thin ingot width 丨 (coffee) 700 ~ 1300 V. Description of invention (7 A7 B7 Economy The Ministry of Ministries and Ministries ’Bureau of Preservation and Consumer Cooperatives printed 2 ~ 5 indicating that the second interval between the dendritic crystals of continuous casting ingots was based on the superheat of molten steel △! *, The speed of making V, the width of the ingot W and the nozzle discharge hole The cross-sectional area (the cross-section of each hole of the 2-hole nozzle) A is the result of the above experiment with the curve. From 2 to 5, it can be seen that the superheat degree of molten steel ΛT, the casting speed V and the ingot width W Increase, and the decrease of the cross section A of the nozzle discharge hole, the interval of the second branch of the dendritic crystal has a tendency to increase, but especially by observing the relationship between the second branch interval of the dendritic crystal V & It can be seen that due to the width of the ingot or the superheat of the molten steel, and the discharge aperture of the immersion nozzle used is different, the deviation is large, and with each parameter, it cannot be an indicator of the fineness of the Osteria grains or even the surface quality. Therefore, Calculate the above formula (2 *) according to each engraving condition The heat input index is 9m, and the result of the curve of the relationship between the heat input index of 9m and the interval between the second branches of the dendrite is shown in Figure 6. The figure shows the heat input index of 9m, and the surface depression of the rolled plate product: slightly The second branch interval of dendritic crystals 2 ~ .4 mm below the surface of the corresponding faulty sheet is closely related. Furthermore, Figure 1 shows the comprehensive result of the relationship between the heat input index 9 m and the incidence of surface sinking of the product. From Figure 1, it can be seen that the heat input index of 9 m is also closely related to the incidence of surface collapse of the product, and it can also be seen that when the heat input index of 9 m is 0 · 85 or less, good steel plate quality can be obtained. Thus, the heat input index When 9m is 0.85 or less, it can be seen from FIG. 6 that the interval between the second branches of the dendritic crystal at a position of 4mm on the surface is 30 nm or less, and when the heat input index 9 m is 0.6 or less, the interval between the second branches of the dendrite It is less than 25nm, which can reduce the occurrence of surface defects. Please read the binding line next to the note
本紙張尺度適用中國國家梯準（CNS ) Α4規格（210X297公釐]L 10 經濟部中央梯準局員工消费合作社印装 ^16660 A7 __B7___ 五、發明説明（8 ) 一方面彎月近傍之入熱量過小，入熱量指數9 m降至 0. 30以下時，由於如前述因模粉未溶解致粉之附著， 如圖1所示鋼板產生欠陷。因此，爲了確保品質（2)式 定義之入熱量指數9m必須爲0. 30以上。 如此，依本發明之鑄造方法，即使鑄造速度爲1. 2 m/m i η以上，甚至3 . Om/m i η以上之高速鎮造 ，，惟由於使噴嘴排出孔徑或溶鋼過熱度最適化，即可防止 表面欠陷。關於此點先前之方&欲實施鑄造速度1 2 m/m i η以上之高速鑄造時，實際上因有時入熱量指數 9m超過0 . 8 5而招致表面欠陷，結果，無法提高鋳造 速度最高.不過1_ 2m/min。 其次，連嫌鏤造機，綜一般之連縝鑄造機外，有鋳造 鑄錠厚度2 0〜1 0 Omm之薄鑄錠用之垂直型雙皮帶式 或塊狀式之薄鋳錠連績鏤造機。垂直型雙皮帶式薄鏞錠連 續鑄造機係例如日本「川崎製:鐵技報j V 0 1，2 1，. No. 3 (1 989) ρ. 175 〜18 1 記載，具有對 應欲鑄造薄鑄錠厚度隔離配置之一對無端皮帶及配置於該 皮帶兩端部止寬下窄狀鑄模短邊形成之鏤造空間（上寬鎮 模）由於自配置於該無端皮帶背面之冷卻襯熱經無端皮帶 放自浸溃噴嘴注入該止宽鑄模之溶鋼之熱以餺造薄鑄錠。 經浸溃噴嘴將奧斯田系不銹鋼溶鋼注入此種垂直型雙 皮帶式或塊狀式薄鑄錠連績鑄造機之鑄模予以凝固連縯鑄 造成所定尺寸之鑲錠時，滿足下式 本紙張尺度適用中國國家梯準（CNS)A4况格（210Χ297公釐）_ 11 - —r-n - I I n 1 - I ^ -- (請先W讀背面之注意事項^本頁) 訂 線 經濟部中央揉準局貝工消费合作社印«. A7 B7__ 五、發明説明（9 ) 〇. 5 0^ν°·58·Ψ'οο4·ΛΤ·(1·〇·96^1. 40 之條件即可高速連續鋳造。此乃因使用垂直型雙皮帶式薄 鑄錠連績鑄造機之上寬鑄模改變溶鋼過熱度ΔΤ，鑄造速 度V，鑄錠寬度W及噴嘴排出孔斷面稹（2孔噴嘴之每1 孔之斷面稹）Α之條件實施奧斯田系不銹鋼之連嫌鑄造作 業之結果如圖7所示滿足。 芍. 〇. 5 0^Vo-58-W'o-O4*AT*d'°-96^l. 4 0 之條件範·圍內減低表面欠陷，而獲得良好鏤片之故°如此 ，使用垂直型雙皮帶式薄鑄錠連縝鑄造機之上寬鋳模之連 續鑄造作業比使用通常之連嫌鑄造用鑄模之連續鑄造作業 ，在更高速亦可獲得良好之表面特性。此可思考爲因垂直 型雙皮帶式薄鑄錠連續鑄造機:之鋳錠厚度相對薄，且溶.鋼 急速冷卻，致高速鑄造亦不易'發現表面欠陷之故，又， ν〇·58· ψ_〇·〇4· ΔΤ · d -〇·96 之値未滿 〇 5 〇 時， 由於將產生因液面溫度降低引起之所謂雙層肌或液面張皮 之缺失，故薄鑄錠連績鑄造機之v°·58· wm ΛΤ • d ·°·96之下限爲〇 . 5 0。 因此，使用垂直型皮帶式或塊狀式薄鑄錠連縯鋳造機 之連縯鑄造作業可實施鑄造速度V爲3. Om/m in以 上之高速鋳造。 本紙張尺度適用中國國家揉率（CNS)A4规格（2丨0X297公釐X 12 - L----------裝-- (請先閲讀背面之注意Ϋ項本頁)This paper scale is applicable to China National Standards (CNS) Α4 specifications (210X297mm) L 10 Printed by the Employees ’Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ^ 16660 A7 __B7___ Fifth, the invention description (8) On the one hand, the heat from the meniscus is near If it is too small and the heat input index 9 m drops below 0.30, the steel plate will collapse due to the adhesion of the powder due to the undissolved mold powder as described above. Therefore, in order to ensure the quality The heat index 9m must be at least 0.30. Thus, according to the casting method of the present invention, even if the casting speed is 1.2 m / mi η or more, or even 3.0 Om / mi η or more high-speed township, but because of the nozzle Optimizing the discharge hole diameter or the superheat of molten steel can prevent the surface from sinking. Regarding this point, the previous method & when performing high-speed casting with a casting speed of 1 2 m / mi η or more, in fact, the calorific value of 9m exceeds 0.85 and the surface collapse is incurred, and as a result, the maximum speed of the manufacturing process cannot be increased. However, 1_ 2m / min. Secondly, even the skew-making machine, in addition to the general continuous casting machine, has the thickness of the casting ingot 2 0 ~ 1 0 Vertical double belt for Omm thin ingot No. 3 (1 989) is a continuous casting machine of thin or ingot type. The vertical double-belt continuous casting machine for thin yam ingot is made in Japan. "Kawasaki System: Tie Ji Bao j V 0 1, 2 1, No. 3 (1 989 ) ρ. 175 ～ 18 1 It is stated that it has a pair of endless belts in isolation configuration corresponding to the thickness of the thin ingot to be cast, and a sculpted space formed by the short sides of the narrow mold at the two ends of the belt (upper wide town mold) ) Since the heat of the cooling lining arranged on the back of the endless belt is placed through the endless belt from the dipping nozzle, the heat of the molten steel injected into the width-limiting mold is used to make a thin ingot. The dipping nozzle injects the Austenitic stainless steel molten steel into this When the casting mold of a vertical double-belt or block-type thin ingot continuous casting machine is solidified and continuously cast into an ingot of the specified size, the following paper size is applicable to the Chinese National Standard (CNS) A4 status ( 210Χ297mm) _ 11-—rn-II n 1-I ^-(please read the notes on the back ^ first page) Printed by the Ministry of Economic Affairs, Central Bureau of Economic Development, Beigong Consumer Cooperative Society «. A7 B7__ V. Description of the invention (9) 〇. 5 0 ^ ν ° · 58 · Ψ'οο4 · ΛΤ · (1 · 〇 · 96 ^ 1. 40 The condition is High-speed continuous casting. This is due to the use of a vertical double-belt thin ingot continuous casting machine with a wide mold to change the superheat of molten steel ΔT, casting speed V, ingot width W and nozzle discharge hole cross-section. The cross-section of every 1 hole) A conditions are fulfilled as shown in Figure 7 for the continuous casting operation of the Austenitic stainless steel. Shao. 〇. 5 0 ^ Vo-58-W'o-O4 * AT * d '° -96 ^ l. 4 0 conditions range · reduce surface sinking in the enclosure, and obtain good slabs ° so, use vertical double belt type thin ingot continuous ingot casting machine on the wide die Continuous casting operations can achieve better surface characteristics at higher speeds than continuous casting operations using conventional continuous casting molds. This can be considered as the vertical double-belt thin ingot continuous casting machine: the thickness of the ingot is relatively thin, and the molten steel is rapidly cooled, so that the high-speed casting is not easy to find the surface sink, and, ν〇 · 58 · If the value of ψ_〇 · 〇4 · ΔΤ · d -〇 · 96 is less than 〇05, there will be a loss of the so-called double-layer muscle or liquid surface skin caused by the decrease of the liquid surface temperature, so the thin ingot The lower limit of v ° · 58 · wm ΛΤ • d · ° · 96 of the continuous casting machine is 0.50. Therefore, continuous casting operations using vertical belt-type or block-type thin ingot continuous casting machines can implement high-speed casting with a casting speed V of 3.0 Om / min or more. This paper scale is applicable to China National Crushing Rate (CNS) A4 specification (2 丨 0X297mm X 12-L ---------- installed-- (please read the note on the back of this page first)
、1T 線. 經濟部中央揉準扃貞工消费合作社印製 A7 ________B7_ 五、發明説明（10 ) 〔實施例〕 實施例1 自轉碟經浸溃噴嘴將含有C : 0. 0 4wt%，S i 5 2 w t % » Μ η ： 〇 . 9 0 w t % » Ρ ： 0 · 〇 2 w t % > S ： 0 . 〇〇3wt%，Ni :9. 2 w t % » C r ： 18. 3 w t % » N ： 0 . 0 2 8 w t % ，舞由鐵及無法避免之不純物而成之溶鋼注入連續鏤造用 a 薄模內，予以凝固實施不斷抽£之連續鋳造'。該連續鋳造 之轉碟內之溶鋼過熱度ΔΤ爲4 8。(：，浸溃噴嘴（2孔噴 嘴型，排出角度：向上5。）之排出孔斷面稹係每一側 4 2 0 Ο-mm2，鋳錠寬度w爲1 0 4 0mm，鏤錠厚度 爲2 Q 0mm，鑄造速度1 · Om/m i η。檢査所得鏡 錠自表層部4 mm深之凝固組織，査樹枝狀結晶第2枝間 隔之大小結果爲2 3 A/m。然後實施依常法之熱壓軋，冷 壓軋，酸洗製成板厚1 . 4m im製品，實施目視檢査結果 ，獲得無表面欠陷（欠陷發生率0 . 0 7 )，品質良好之 鋼板（9m=0. 66)。 比較例1 以連績製造法將與實施例1同一成分組成範圍之溶鋼 做爲鑄錠。此時，轉碟內之溶鋼過熱度ΔΤ爲2 8 °C，浸 漬噴嘴（2孔喷嘴型，排出角度：向上5° )之排出孔斷 面積爲，每一側4 2 0 Omm2，鑄錠宽度W爲1 0 2 0 mm，薄旋厚度爲2 0 Omni ’鍵造速度爲Q · 6 (請先閲讀背面之注^'項再v寫本頁) -裝_ 訂· 線 本紙張尺度適用中國國家搞準（CNS)A4规格（2丨0X297公釐13 - A7 B7 五、發明説明（11 ) m/m i η。檢査所得鋳錠自鑄'錠表層部4mm深之凝固 組織，査樹枝狀結晶第2枝間隔之大小結果爲2 0 ° 然後實施依常法之熱壓軋冷壓軋，酸洗製成板厚1. 4 mm之製品實施目視檢査結果，因粉末溶解，而產生粉欠 陷，欠陷發生率爲0· 45 (9m=0. 28)。 比較例2 以連續製造法將與實施例Ϊ同一成分組成範圍之溶鋼 做爲鋳錠。此時，轉碟內之溶鋼過熱度ΛΤ爲4 6 eC，浸 溃噴嘴（2孔噴嘴型，排出角度：向上5β )之排出孔斷 面積爲，每一側3 0 0 Omm2，鑄錠宽度W爲1 2 6 0 mm，鑄錠厚度爲2 0 0 mm，鑄造速度爲1. 5 m/m丨η。檢査所得鑲錠自鏤錠表層部4mm深之凝固 組織，査樹枝狀結晶第2长間隔之大小結果爲3 然後實施依常法之熱壓軋冷壓i軋，酸洗製成板厚1 . 4 . mm之製品實施目視檢査結果，組織粗大化欠陷發生率爲 〇. 6(9m=0. 94)° 實施例2 自轉碟經浸滇噴嘴將含有c : 0. 0 6wt%，S i ;〇 70wt%，Mn:l. 50wt%，P: 〇. 〇 4 w t % » S ： 0 . 0 0 8 w t % » N i ： 1 〇 〇wt%»Cr ： 19. 0 w t % » N ： 〇 〇45wt%，餘由鐵及無法避免之不純物而成之溶 本紙張尺度適用中國國家梂準（CNS)A4規格（210x297公釐X 14 - ------^----裝-- 請先閲讀背面之注意事項^之寫本頁) 訂 線 經濟部中央橾準局負工消费合作社印製 A7 B7 五、發明説明（12 ) 鋼注入連績鑄造用鑄模內，予以凝固實施不斷抽出之連縝 鑄造。該連績鑄造之轉碟內之溶鋼過熱度ΔΤ爲4 6X， 浸潰噴嘴（2孔噴嘴型，排出角度：向上5° )之排出孔 斷面積係每一側4 2 0 Omm2，鋳錠寬度W爲1 2 6 0 mm，薄錬厚度爲2 0 0mm，薄造速度1 . 5m/m i η。檢査所得鑄錠自表層部4mm深之凝固組織，査樹枝 狀結晶第2枝間隔之大小結，果爲2 6 // m。然後實施依常 法之熱壓軋，冷壓軋，酸洗製^板厚1. 4mm製品，實 施目視檢査結果，獏得無表面欠陷（欠陷發生率0 . 0 8 )，品質良好之鋼板（9m=0.80)。 請 先 閲 讀 背 面 之 注 項 經濟部中央揉準局貝工消費合作杜印*. 實施例3 自轉碟 注入連嫌鑄 造。該連縝 渍噴嘴（2 面稹係每一 m m，鍵錬 m / m i η 樹枝狀 依常法 ，實施 0 7 ) ，査 實施 製品 經浸漬噴嘴將與 造用鑄模內，予 鑄造之轉碟內之 孔噴嘴型，排出 側 4 2 0 0 m m 厚度爲2 0 0 m 。檢査所得鑄錠 結晶第2枝間隔 之熱壓軋，冷壓 目視檢査結果， ，品質良好之鋼 實施例2同一成分組成之溶鋼 以凝固實施不斷抽出之連續鋳 溶:鋼過熱度ΛΤ爲4 8°C，.浸 角度：向上5 ° )之排出孔斷 2，鋳錠寬度W爲1 2 6 0 m，鑄造速度爲1. 5 自表層部4 mm深之凝固組織 之大小結果爲2 7 #111。然後 軋，酸洗製成板厚1. 4mm 獏得無表面欠陷（欠陷發生率 板（9m=0. 83)。 订 線 本紙張尺度適用中國國家搮準（CNS ) A4规格（210X297公釐)_ 15 _ 經濟部中央梂準扃貞工消费合作社印装 316860 A7 ___ B7 五、發明説明（13 ) 實施例4 自轉碟經浸漬噴嘴將含有c : 0. 0 6wt%，S i :〇· 7 0 w t % » Μ η ： 1 . 50wt%，P: 〇 - 〇 4 w t % » S ： 0 . 0 0 8 w t % * N i ： 1 〇 · 0wt%，Cr:19. 0 w t % * N ： 〇 · 〇 4 5wt%，餘由鐵及無法避免之不純物而成之溶 鋼注入連縝鑄造用鋳模內，、予以凝固實施不斷抽出之連續 鑄造。該連嫌鑄造之轉碟內之备鋼過熱度△ T爲4 5 °C， 浸溃噴嘴（2孔噴嘴型，排出角度：向下3 5 ° )之排出 孔斷面稹係每一側2 5 0 0mm2，鋳錠宽度W爲 1 0 4 0.mm，鋳錠厚度爲2 0 0mm，鋳造速度1. 6 m/m i η。檢査所得鑄錠自表層部4mm深之凝固組織 ，査樹枝狀結晶第2枝間隔之大小結果爲2 6 #m。然後 實施依常法之熱壓軋，冷壓軋，酸洗製成板厚1. 4mm 製品，實施目視檢査結果，獲與無表面欠陷（欠陷發生.率 0 · 0 9 )，品質良好之-板（9 m = 1 · 0 4 )。 比較例3 自轉碟經浸溃噴嘴將與實施例2同一成分組成之溶鋼 注入連績鑄造用鑄模內，予以凝固實細不斷抽出之連續鑄 造。該連績鑄造之轉碟內之溶鋼過熱度ΔΤ爲5 1°C，浸 潰噴嘴（2孔噴嘴型，排出角度：向下1 0° )之排出孔 斷面稹係每一側2 5 0 0mm2，鏞錠宽度W爲1 2 6 0 mm，鑄錠厚度爲2 0 0mm，鑄造速度爲1 . 6 本纸張尺度適用中困國家揉率（匸阳）八4规格（2丨0><297公釐）_16- -----------裝-- (請先W讀背面之注意事項t彳爲本頁) 訂 線 經濟部中央橾準局貝工消费合作杜印製 A7 _B7_ 五、發明説明（Μ ) m/m i η。檢査所得鑄錠自表層部4mm深之凝固組織 ，査樹枝狀結晶第2枝間隔之大小結果爲3 5 //m。然後 實施依常法之熱壓軋，冷壓軋，酸洗製成板厚1. 4mm 製品，實施目視檢査結果，組織粗大化，欠陷發生率 0 . 7 1 ( 9 m = 1 . 15)〇 實施例5 自轉碟經浸濟噴嘴將含有1' : 0. 0 5wt%，S i :0. 4 0 w t % » Μ η ： 1 . 0 5 w t % » Ρ ： 0. 025 wt%，S:0. 0 0 5 w t % » N i ： 8 . 9 w- t % » C r ： 18. 0wt%，N:0. 031 w t %，餘由鐵及無法避免之不純物而成之溶鋼注入垂直 型雙皮帶式薄鏤錠連績鏞造機之上寬鋳模內，予以凝固實 施不斷抽出之連續鑲造。該連嫌鋳造之轉碟內之溶鋼過熱 度△ T爲3 9 °C，浸漬噴嘴（:2孔噴嘴型，排出角度：.向 下6 0 ° )之排出孔斷面積係毎一側4 0 0 0 m m 2，鑄 錠寬度W爲1 7 0 0mm，鏞錠厚度爲3 0. Omm，鑄 造速度爲5. Om/min。檢査所得鑄錠启表層部 0. 5〜1. Omm深之凝固組織，査樹枝狀結晶第2枝 間隔之大小結果爲2 3#m。然後實施依常法之熱壓軋， 冷壓軋，酸洗製成板厚1. 4mm製品，實施目視檢査結 果，獲得無表面欠陷（欠陷發生率0. 0 9)，品質良好 之鋼板（9m=l. 37)。 本紙張尺度遑用中國國家揲準（CNS ) Α4洗格（210 X 297公釐t 17 - L---;11----"—裝-I (請先閲讀背面之注意事項*-ί,寫本頁) 訂 線 A7 B7 五、發明説明（15 ) 比較例4 以連績製造法將與實施例5同一成分組成範圍之溶鋼 做爲鏵錠。此時，轉碟內之溶鋼過熱度ΛΤ爲4 0°C，浸 潰噴嘴（2孔噴嘴型，排出角度：向下6 0° )之排出孔 斷面積爲，每一側3 5 0 0mm2，鋳錠寬度W爲 1700mm，鑄錠厚度爲30. 0mm，鏞造速度爲 6 . Om/min。檢査所,得鏞錠自鋳錠表層部0. 5〜 1. Omn;深之凝固組滅，査ft枝狀結晶第2枝間隔之大 小結果爲3 5 y m。然後實施依常法之熱壓軋冷壓軋，酸 洗製成板厚1. 4 mm之製品實施目視檢査結果，組織粗 大化，欠.陷發生率爲1. 30 (9m=l. 67)。 〔產業上之可利用性〕 依本發明之奧斯田系不銹鋼之連續鏤造方法，連續鋳 造奧斯田系不銹鋼時，可隨例:如賦予之溶鋼過熱度確保.高 品質，以最大鑄造速度鑄造等'，可使高品質與高生產性兩 立0 經濟部中央揉準局貝工消費合作社印製 (請先聞讀背面之注意事項^彡..烏本頁) 圖示之簡單說明： 圖1 :入熱量指數與冷軋板之表面欠陷發生率之關係 之曲線圚。 圖2 :溶鋼過熱度與樹枝狀結晶第2枝間隔之關係之 散布圚。 圖3 :縳造速度與樹枝狀結晶第2枝間隔之關係之散 本紙張尺度適用中國國家橾準（CNS)A4規格（ 210X297公釐X 18 - A7 ____B7 五、發明説明（16 ) 布圖。 圓4 :鋳錠寬度與樹枝狀結晶第2枝間隔之關係之散 布圖。 圖5 :噴嘴排出孔斷面稹與樹枝狀結晶第2枝間隔之 關係之飲布圖。 圇6 :入熱量指數與樹枝狀結晶第2枝間隔之關係之 散布圖。 圇7 :使用雙皮帶式連績fc造機之連績製造作業之入 熱量指數與冷軋板之表面欠陷發生率之關係之曲線圖。. ----------- (請先Μ讀背面之注意事項Ηιί.ίτ本頁) 訂 線 經濟部中央樣準局貝工消费合作社印装 本紙張尺度適用中國國家揉準（CNS ) Α4規格（210X297公釐） 19 -、 1T line. Printed by the Ministry of Economic Affairs of the Central Government of the Ministry of Economic Affairs and Consumers Cooperative A7 ________B7_ V. Description of the invention (10) [Examples] Example 1 The self-rotating dish will contain C: 0.04 wt%, S i 5 2 wt% »Μ η: 〇. 9 0 wt%» Ρ: 0. 〇2 wt% > S: 0. 〇〇3wt%, Ni: 9.2 wt% »C r: 18. 3 wt% »N ： 0. 0 2 8 wt%, molten steel made of iron and unavoidable impurities is poured into a thin mold for continuous engraving and solidified to implement continuous pumping. The superheat degree ΔT of the molten steel in the continuous rotor was 48. (:, Immersion nozzle (2-hole nozzle type, discharge angle: upwards 5.)) The cross section of the discharge hole is 4 2 0 Ο-mm2 on each side, the width w of the ingot is 1 0 4 0mm, and the thickness of the ingot is 2 Q 0mm, casting speed 1 · Om / mi η. Check the solidified structure of the obtained mirror ingot 4 mm deep from the surface part, check the size of the second branch interval of dendritic crystals and the result is 2 3 A / m. Then implement the usual method The hot-rolling, cold-rolling, pickling to produce products with a thickness of 1.4m im, the results of visual inspection, to obtain a surface free of defects (depression occurrence rate of 0.07), good quality steel plate (9m = 0 66). Comparative Example 1 The molten steel with the same composition range as in Example 1 was used as the ingot by the continuous manufacturing method. At this time, the superheat of the molten steel in the rotating disc ΔT was 2 8 ° C, and the dipping nozzle (2 holes Nozzle type, discharge angle: upward 5 °) The cross-sectional area of the discharge hole is 4 2 0 Omm2 on each side, the ingot width W is 1 0 2 0 mm, the thin spin thickness is 2 0 Omni 'keying speed is Q · 6 (Please read the note ^ 'on the back and then v to write this page) -Installation_ Order · Line paper size is applicable to China National Accurate (CNS) A4 specifications (2 丨 0X297mm 13-A7 B7 V. Description of the invention (11) m / mi η. Check the solidified structure of the surface layer of the ingot obtained from the casting of the ingot 4mm deep, check the size of the second branch interval of the dendritic crystals and the result is 20 °, and then perform hot rolling according to the usual method After cold rolling and pickling, a product with a plate thickness of 1.4 mm was visually inspected. As a result of powder dissolution, powder collapse occurred, and the occurrence rate of collapse was 0 · 45 (9m = 0.28). Comparative Example 2 The molten steel with the same composition range as Example Ϊ was used as the ingot by the continuous manufacturing method. At this time, the superheat degree of molten steel ΛT in the turntable was 4 6 eC, the immersion nozzle (2-hole nozzle type, discharge angle: upward 5β ) The cross-sectional area of the discharge hole is 3 0 Omm2 on each side, the ingot width W is 1 2 6 0 mm, the ingot thickness is 2 0 0 mm, the casting speed is 1.5 m / m 丨 η. The inlaid ingot is 4mm deep solidified structure from the surface of the ingot, and the size of the second long interval of the dendritic crystal is 3, and then the hot rolling and cold pressing of the conventional method are performed, and the pickling is performed to make the plate thickness 1.4. The result of the visual inspection of the products of mm, the occurrence rate of coarsening of the tissue is 0.6 (9m = 0.94) ° Example 2 The self-rotating dish will contain c: 0 through the immersion nozzle in Yunnan. 0 6wt%, Si; 〇70wt%, Mn: 1. 50wt%, P: 〇. 〇4 wt% »S: 0.08 wt%» N i: 1 〇〇wt% »Cr: 19. 0 wt% »N ： 〇〇45wt%, the remaining is made of iron and unavoidable impurities. The paper size is applicable to China National Standards (CNS) A4 specification (210x297 mm X 14------- ^ ---- Installation-- Please read the notes on the back ^ first write this page) Printed A7 B7 by the Ministry of Economic Affairs, Central Bureau of Preservation and Consumer Cooperatives V. Invention description (12) Steel injection casting mold for continuous casting Inside, it is solidified to carry out continuous casting with continuous extraction. The superheat degree ΔT of the molten steel in the turntable of this continuous casting is 4 6X, the cross-sectional area of the discharge hole of the dipping nozzle (2-hole nozzle type, discharge angle: upward 5 °) is 4 2 0 Omm2 on each side, and the width of the ingot W is 1 2 6 0 mm, the thickness of the thin flange is 200 mm, and the thinning speed is 1.5 m / mi η. Check the solidified structure of the obtained ingot from the surface layer 4mm deep, check the size of the second branch interval of the dendritic crystal, the fruit is 2 6 // m. Then implement hot rolling, cold rolling, pickling ^ plate thickness 1. 4mm products in accordance with the usual method, visual inspection results, tapirs without surface sinking (breaking incidence rate 0.08), good quality Steel plate (9m = 0.80). Please read the notes on the back first. Du Yin *, Beigong Consumer Cooperation of the Central Bureau of Economic Development of the Ministry of Economic Affairs *. Example 3 Rotating Dish Injecting Continuous Casting. The continuous staining nozzle (2 sides of each millet is every mm, the key is m / mi η dendrite according to the usual method, implement 0 7), check the implementation of the product after the dipping nozzle will be in the casting mold, the pre-cast turntable The hole nozzle type, the discharge side 4 2 0 0 mm thickness is 2 0 0 0 m. Check the hot rolling of the second interval of the obtained ingot crystals, and visually check the results of cold pressing. The steel of good quality in Example 2 is continuously melted by the continuous extraction of the molten steel of the same composition by solidification: steel superheat ΛΤ 4 8 ° C, immersion angle: upward 5 °), the discharge hole is broken 2, the width of the ingot is 1 2 6 0 m, the casting speed is 1.5, the size of the solidified structure 4 mm deep from the surface part is 2 7 # 111. Then rolled and pickled to make a plate with a thickness of 1. 4mm. Tapir is free of surface depressions (depression incidence rate plate (9m = 0.83). The paper size of the line book is applicable to China National Standard (CNS) A4 specification (210X297 ) _ 15 _ Printed by 316860 A7 ___ B7 of the Ministry of Economic Affairs, Central Ministry of Economics and Consumer Affairs Co., Ltd. ___ B7 V. Description of the invention (13) Example 4 The self-rotating dish will contain c: 0.06wt%, S i: 〇 7 0 wt% »Μ η: 1. 50 wt%, P: 〇- 〇4 wt%» S: 0.08 wt% * N i: 1 〇 0 wt%, Cr: 19. 0 wt% * N ： 〇 · 〇4 5wt%, and the molten steel made of iron and unavoidable impurities is injected into the continuous casting mold, and it is solidified to carry out continuous casting with continuous extraction. The superheat degree of steel △ T is 4 5 ° C, the cross section of the discharge hole of the dipping nozzle (2-hole nozzle type, discharge angle: 3 5 ° downward) is 2 5 0 0mm2 on each side, and the width W of the ingot is 1 0 4 0.mm, the thickness of the ingot is 200 mm, and the manufacturing speed is 1.6 m / mi η. Check the solidified structure of the ingot from the surface layer 4 mm deep, check the size of the second branch interval of the dendritic crystal is 2 6 #m. Then carry out hot rolling, cold rolling, pickling to make a product with a thickness of 1.4 mm according to the usual method, and perform a visual inspection to obtain no surface defects (depression occurrence rate 0. 0 9) , Good quality-plate (9 m = 1 · 0 4). Comparative Example 3 The molten steel with the same composition as in Example 2 was injected into the casting mold for continuous casting by the rotating disc through the dipping nozzle, and it was solidified and continuously extracted Continuous casting. The superheat ΔT of the molten steel in the turntable of this continuous casting is 51 ° C, and the cross section of the discharge hole of the dipping nozzle (2 hole nozzle type, discharge angle: 10 ° downward) is on each side 2 5 0 0mm2, width of W ingot is 1 2 6 0 mm, ingot thickness is 2 0 0mm, casting speed is 1.6. This paper scale is suitable for the rubbing rate (匸 阳) 8 4 specifications in the sleepy countries (2 丨0 > < 297mm) _16- ----------- installed-- (please read the precautions on the back first t page for this page) Ministry of Economic Affairs, Central Bureau of Industry and Fisheries Consumption Co-printed A7 _B7_ V. Description of the invention (Μ) m / mi η. Check the solidified structure of the ingot from the surface layer 4mm deep, check the size of the second branch interval of the dendritic crystal is 3 5 // m. ThenThe hot-rolling, cold-rolling and pickling were carried out according to the usual method to produce products with a thickness of 1.4 mm. The results of visual inspection showed that the structure was coarsened and the incidence of collapse was 0.71 (9 m = 1.15). Example 5 The self-rotating dish through the immersion nozzle will contain 1 ': 0.05 wt%, Si: 0.40 wt% »Μ η: 1.0 5 wt%» Ρ: 0.025 wt%, S: 0. 0 0 5 wt% »N i: 8.9 w%%» C r: 18. 0 wt%, N: 0. 031 wt%, the molten steel made of iron and unavoidable impurities is injected into the vertical type The double-belt thin ingot ingot is continuously solidified in the wide mold above the Yong-Miao machine, and continuous inlay is continuously drawn out. The superheat degree of molten steel △ T in the turntable made by this manufacturer is 3 9 ° C. The cross-sectional area of the discharge hole of the immersion nozzle (: 2 hole nozzle type, discharge angle: 60 ° downward) is 4 0 per side 0 0 mm 2, the width W of the ingot is 1 700 mm, the thickness of the ingot is 3 0. Omm, the casting speed is 5. Om / min. Check the surface layer of the ingot to obtain 0. 5 ~ 1. Omm deep solidification structure, check the size of the second branch of the dendritic crystal. The result is 2 3 # m. Then carry out hot rolling, cold rolling, pickling to make products with a thickness of 1.4 mm according to the usual method, and perform visual inspection to obtain the results of no surface sink (depression occurrence rate 0.09), good quality steel plate (9m = l. 37). The size of this paper uses the Chinese National Standard (CNS) Α4 wash grid (210 X 297 mm t 17-L ---; 11 ---- " —installed-I (please read the notes on the back *- ί, write this page) Line A7 B7 V. Description of the invention (15) Comparative Example 4 The molten steel in the same composition range as in Example 5 is used as the ingot in the continuous manufacturing method. At this time, the molten steel in the turntable is overheated The degree ΛΤ is 40 ° C, the cross-sectional area of the discharge hole of the dip nozzle (2-hole nozzle type, discharge angle: 60 ° downward) is 3 500 mm 2 on each side, the width W of the ingot is 1700 mm, and the ingot The thickness is 30. 0mm, and the yam making speed is 6. Om / min. The inspection station obtained the yam ingot from the surface portion of the ingot 0. 5 ~ 1. Omn; the deep coagulation group is extinguished, and the second branch interval of the ft dendritic crystal is checked. The result of the size is 3 5 ym. Then the hot rolling and cold rolling according to the usual method are carried out, and the product with a plate thickness of 1.4 mm is pickled to carry out a visual inspection. The structure is coarsened and the occurrence rate of deflection is 1. 30 (9m = l. 67). [Industrial Applicability] According to the continuous engraving method of the Austenitic stainless steel according to the present invention, when continuously making the Austenitic stainless steel, it can follow the example: if the molten steel given is overheated degree Guarantee. High quality, casting at maximum casting speed, etc., can be both high quality and high productivity. 0 Printed by the Ministry of Economic Affairs, Central Bureau of Precision Industry, Beigong Consumer Cooperative (please read the notes on the back ^ 彡 .. 乌(This page) A brief description of the diagram: Figure 1: The curve of the relationship between the heat input index and the incidence of surface collapse of cold-rolled sheets. Figure 2: The spread of the relationship between the superheat of molten steel and the interval between the second branches of dendritic crystals Figure 3: The relationship between the binding speed and the second branch interval of dendritic crystals is applicable to the Chinese National Standard (CNS) A4 (210X297mm X 18-A7 ____B7). 5. Description of the invention (16) Circle 4: Scattering diagram of the relationship between the width of the ingot and the interval between the second branches of the dendrite. Figure 5: Drinking diagram of the relationship between the cross section of the nozzle discharge hole and the interval between the second branches of the dendrite. Fig. 6: Heat input Scatter diagram of the relationship between the index and the interval between the second branches of dendrites. Figure 7: The graph of the relationship between the heat input index of the continuous manufacturing operation using the double-belt continuous performance fc machine and the incidence of surface depression of the cold-rolled sheet .. ----------- (Please read the notes on the back first Ηι .ίτ page) set the line-like quasi-central Ministry of Economic Affairs Bureau of Consumer Cooperatives HIGHLAND this paper scale printing equipment suitable for China's national rubbing quasi (CNS) Α4 size (210X297 mm) 19 -