200927315 六、發明說明： 【發明所屬之技術領域】 本發明係有關鎂熱滚軋方法及鎮熱滾軋裝置。本案係 主張2007年10月16日於日本申請專利之日本特願 2007-269058號的優先權’並於本案引用其内容。 【先前技術】 由鎂合金製造鎮片材的過程中’例如將直徑300至400 mm、長度500至600 mm左右之圓棒狀的枉料（billet)藉由 〇熱壓出成形為例如厚度10 mm以下的厚板。將前述厚板切斷 成預定長度（例如3m)作為切板材，利用粗滾乳將前述切板 材滚軋至厚度1 mm以下。 還有，鎂合金在常溫進行滾軋時，即使壓力增加也很 容易斷裂，故使用熱滾軋較為理想。 習知之將鎂合金予以熱滾軋的裝置之例子，已揭示於 專利文獻1的第1圖及專利文獻2的第1圖。 〇 丁於該等專利文獻之熱雜裝置係具備：滾軋機， 一 鎂合金往返一面進行滚軋；及2個加埶爐，配置在 機的上游侧與下游侧;藉由前述加熱爐將綱 %''預m再_滾軋機進行滾軋。 (專利文獻υ日本特許第3521863號公報 η (專利文獻2)日本特許帛3821074號公報 【發明内容】 (發明所欲解決的課題） 是揭7F於上述專利文獻之熱滾軋裝置中 ，僅在滚 4 320689 200927315 乾機的兩側設有加熱爐，因此會有鎂切板;^由來回滾乳 條狀，使鎂切板材的端部從加熱爐突出，而造成;該 犬出部分冷卻的困擾。此乃因為鎂切板材會因熱滾軋中 溫度變動會導致成品的尺寸精度不良或品質惡化之故。 本發明係鑑於上述課題而研創者，目的:於提供1 可防止鎮合金因熱魏中的溫度變動而導致製 化 之鎂熱滾軋方法及裝置。 印買心化 〇 (用以解決課題的手段） 為解決上述課題，本發明採用以下的裝置/方法。 本案之第1發明的鎮合金熱滾乾方法係: 軋步驟’在配置於滾軋機的上游側 ：· /、 游侧加熱爐、與配置於前述滾耗機的= 板予以加熱的上 予熱的下游侧加熱爐之間機 :二二袞:::上ΐ配置於前述上游側加熱爐之更: 砑w亚將已藉由刖述上游側加熱焯 Ο 運/保温的上游側保溫裳置、心二：述鎂板予以搬 之更下游側並將已藉由前述下游彻置=逑下游侧加熱爐 端部進行保溫並將前賴對上下游侧各板 取步驟’該捲取=軋:法中，亦可具有捲 賦予張力，並裝置之下游侧的張力賦予裝置 的捲取機進行2 則述下游側保溫裝置之更下游側 320689 5 200927315 此外’本案之第2發明的鎂合金埶滾 滾軋機，將鎂板予以來回滾軋；上游側^埶裒置係具備： 述滾軋機的上游侧並將前述鎂板予以加熱了爐、’配置於前 ^爐，配置於前述滾軋機的下游側並將前^ ,下游侧加熱 上游側保溫裝置，配置於前述上游侧加熱以加熱； 搬運已藉由前述上游側加熱爐加熱之前述錄 上游側並 侧端部進行保溫；及下游側保溫裝置，配置板二且對上游 加熱爐之更下游側並搬運已藉由前下 於前述下游側 〇前述鎂板，且對下游側端部進行保溫。H加熱爐加熱之 在上述第2發明之鎂合金熱滾乾裝 ★ 持滾輪（Pinch rolier)，該夹持滾輪係在前述2具備夹 熱爐之間、以及前述滾軋機與前述;:與前 爐之間㈣配置複綠，胁厚度 游側加熱 以調節搬運速度。 將則迷鎂板夾住， 〇 另外，在上述第2發明之錤合金教滾 滾乳機的工作輥（财k r〇ller)及設置於^中’前述 下_複數組夾持滾輪亦可為加熱滾輪。'幸L機之上 具備明之鎂合金熱滚乾裝置中，亦可 賦予張力的張保π之:游側，對前述鎂板 更下_ m2 j述張力_裝置之 (發明的效果） 述鎮板的捲取機。 伴加板^發明’由於係'遍及镇板的大致全長-邊力教 保邊進行滾軋，故可抑制鎂板的溫度下降二= 320689 6 200927315 滾軋中的溫度變動而導致製品的尺寸精度不良、品質惡 ' 化，並可保持成品的品質良好。 * 【實施方式】 J 以下，參照圖面針對本發明之一實施形態進行說明。 第1圖係表示本實施形態之熱滾乾裝置10 0 (鎂合金熱 滾軋裝置）之概略構造的概略正面圖。 如第1圖所示，本實施形態之熱滾軋裝置1〇〇係具備： 滾軋機1、第1加熱爐2、第2加熱爐3、夾持滾輪（pinch 〇 roller)4、第 1 輥道（table roller)5、第 2 輥道 6、捲取 機7、及夾持滚輪8。 滾軋機1係具有：並列對向之一對工作輥la、及使前 述工作輥la旋轉驅動的驅動源（未圖示）。 工作輕1 a係為將表面溫度升溫至適温的加熱滾輪，一 邊將通過前述工作輥la之間的饈切板·材 M0(錢板）朝一 方向送出，一邊對鎂切板材M0賦予預定壓力。藉此，滚軋 ❹機1將鎂切板材M0的厚度壓薄並使其形成長條狀。 此外’滾軋機1係將鎂切板材 M0的運送方向以預定 的時序反轉，進行來回滾軋。藉此’滾軋機1將例如厚度 6腿、長度3m左右的鎂切板材M0滾軋成厚度1腿、長度 18m左右。 另外，屬於本熱滾軋裝置100之工件的上述鎂切板材 M0(鎮板）係為由鎂合金構成的板材。 第1加熱爐2(上游側加熱爐）係為配置在滚軋機1之 上游侧的加熱爐。第2加熱爐3(下游側加熱爐）則為配置 7 320689 200927315 在滾乳機1之下游侧的加熱爐。 ' 上述一對加熱爐2、3係具有滚軋前之鎂切板材M0長 ‘ 度以上的長度，並具備加熱器及搬運滾輪（兩者均未圖 * 示）。藉由加熱器將鎂切板材M0加熱至預定溫度（100至350 °C左右，較理想為200至300°C)，再利用搬運滾輪來搬運 鎮切板材M0。 夾持滾輪4係為將表面溫度升溫至適溫的加熱滾輪， 係輔助搬運隨著由滾軋機1所進行的來回滾軋而進行來回 ® 運動的鎂切板材M0。上述夾持滾輪4係在滾軋機1與第1 加熱爐2之間、及滚軋機1與第2加熱爐3之間分別配置 複數組。 該等夾持滾輪4係藉由調節搬運速度，而對由滚軋機 1所滾軋的鎂切板材M0賦予適當的張力。 第1輥道5(上游侧保溫裝置）係配置在第1加熱爐2 的上游侧，第2輥道6(下游側保溫裝置）則配置在第2加 0熱爐3的下游侧。上述各輕道5、6係具有搬運滾輪5a、 6a及保溫蓋5b、6b。 鎂切板材M0利用滾軋機1進行反轉滾軋而變長時，端 部會從加熱爐2、3突出。輥道5、6係將_鎂切板材M0從加 熱爐2、3突出之端部利用搬運滾輪5a、6a予以搬運/支 撐，並藉由保溫蓋5b、6b覆蓋以斷絕外部空氣。結果，輥 道5、6以使鎮切板材M0之熱不散失的方式予以保溫。此 外，進行反轉滾軋時，鎂切板材M0中之位於下游侧的端部 保溫部，係在下一次之朝反方向的滾軋時進入加熱爐内。 8 320689 200927315 而且，位於下游側的端部加熱部在朝反方向滾軋時係在保 裝置内藉由反覆交替上述動作，可減少端部溫度的降 ‘ 低。 . 捲取機7係捲取鎂切板材M0經滾軋後的製造物，亦即 捲取鎂片材Ml (鎂板)者。 爽持滾輪8(張力賦予裝置）係配置在捲取機7的前 方’藉由調節鎂片材Ml的搬運速度，在捲取機γ的捲取方 向與反方向對鎂片材Ml賦予張力者。 在上述構成中，熱滾軋裝置100係進行鎂切板材M0的 粗滚乾。以下，針對熱滾軋裝置100的動作進行說明。 首先’屬於利用本熱滾軋裝置100進行滾軋之對象的 鎮切板材M0 ’係藉由例如將直徑3〇〇至4〇〇麵、長度500 至600 mm左右之圓棒狀的坯料利用熱壓出（1〇〇至左 右’較理想為20(Tc)成形為例如厚度1〇咖以下（例如6卿） 的厚板’再將前述厚板切斷成預定長度（例如3〇1)來製造。 〇 構成利用熱壓出成形之鎂切板材M0的鎂結晶粒，由於 藉由壓出而機械性地細微化，為高強度、高品質，且不易 斷裂，衝壓成形性良好。 . 鎮切板材M0係從第1輥道5朝第1加熱爐2搬運，在 第1加熱爐2内被加熱至預定溫度（1〇〇至35〇。〇左右’較 理想為200至300°C)再朝滾軋機1搬運。 滾軋機1係一邊將鎂切板材M〇予以滾軋一邊朝第2 加熱爐3搬運。鎂切板材M0的溫度從第1加熱爐2移動至 第2加熱爐3之間會稍微降低。但是，工作親la及複數個 9 320689 200927315 夾持滾輪4為加熱滾輪’而且在第2加熱爐3内再度將鎂 '切板材M0的溫度加熱至預定溫度，故溫度變動不大。 熱滚軋裝置100係在鎂切板材M0的末端通過滚軋機1 - 時，反轉滾軋方向。熱滾軋裝置100係重覆上述動作而將 鎂切板材M0予以來回滾軋，依序壓薄鎮切板材M0的厚度， 以製造鎂片材Ml。 以下的表1係表示利用本熱滾軋裝置100所進行之粗 滾軋之各種數值的具體例。 ❹[表1] 道次No. 入側厚度 (mm) 壓下量 (mm) 滚車L溫度 Ct) 滾乳速度 (m/分） 滾軋負荷 (ton) 1 6. 00 1.80 200 10 180 2 4. 20 1.26 200 10 165 3 2. 94 0.88 200 10 150 - 4 2. 06 0.62 200 10 140 5 1.44 0.43 200 10 135 最終厚度：1. 01皿1 在上述具體例中，鎂切板材M0的材質為AZ31B，尺寸 為，厚度6. 00 mm、寬度300 mm、長度3000删。工作輥ia 的直徑為400 mm，滾筒（barrel)長度為500醒，失持滾輪 4的直徑為250 mm。 此外，在上述具體例中，加熱爐2、3的加熱溫度為 220°C，夹持滾輪4及工作輥la為内藏加熱器的加熱滚輪， 320689 10 200927315 加熱滾輪的表面溫度為2〇〇°C。 而且，上述具體例係藉由5道次（Pass)(來回2. 5次） 的來回滾軋，將厚度6. 00 mm的鎂切板材M0製成厚度ιοί -腿的鎂片材Ml，在5道次之後利用捲取機7捲取者。 鎮切板材M0係隨著滾軋形成長條狀’在其末端通過滾 軋機1時，包含最前端之端部係形成為從加熱爐2、3突出。 輥道5、6係將從加熱爐2、3突出的端部以搬運滾輪 5a、6a支撐，並利用保溫蓋5b、6b予以保溫。 © 若對此在第1圖中更詳細説明時’例如：滾軋前長度. 為L0的鎂切板材M0係在區間A1滚軋至長度成為L1為止 (第1滚軋步驟），在區間A2滾軋至長度超過L1而成為L2 為止（第2滾軋步驟），然後被捲取（捲取步驟）。 亦即，本熱滾軋裝置1〇〇在鎂切板材M0的長度為L〇 至L1時’藉由第1滾軋步驟在區間A1 (即第1加熱爐2至 滾軋機1至第2加熱爐3之間）來回滾軋。在鎂切板材M〇 ❾的長度超過L1而成為L2為止，藉由第2滾軋步驟在區間 A2(即第1輥道5至第1加熱爐2至滾軋機1至第2加熱爐 3至第2輥道6之間）來回滾軋。然後，以捲取機7捲取成 品（即鎂片材Ml)。 藉此，鎂切板材M0係遍及全長被加熱或保溫，而大致 保持在-定範_溫度4故，可防止鎂城材刖因溫度 製品的品質惡化’並可保持成品(即鎮片材mi) 的口口貝良好。 运有’進仃滾軋中的鎮切板材M〇因為高溫而變得柔 320689 11 200927315 軟，如果在滚軋機i =，位亦施以高壓則會有壓痕& 留之虞。對此，在本熱滾軋裂置100中，藉由利用複數組 的夾持滚輪4將鎮切板材M0在複數處予以失持，來分散各 爽持滚輪4的㈣力’使岐親輪4造成的壓痕減少。 而且’鎂切板材M0的厚度被壓薄i預定厚度（例如丄 mm左右）而成為鎂片材Ml之後，本熱滾軋裝置1〇〇係由 捲取機7捲取鎂片材Ml而作為線圈材。 ,、 ❹ Ο 此時，夾持滾輪8係調節鎂片材M1的搬運速度以對利 "::方::方:1施加預定張力，並在與捲取機 7之捲取方向相反的方向朝鎂片材町歟予执力 根據本發明的熱滾軋裝置100，由 M0的大致全長-邊加熱/保溫一邊進行^遍及鎮切板材 :板材M_度下降，防止因熱滾軋中=度:= 並可保持成品(即物m 導致 裝置亦==:二夾持滾輪8作為張力賦予 〇⑽㈣作為予以平垣化的整平器 在此，整平器係如第2圖所示，利爾^ 以斷面成為2段之蜂巢狀之方式予以個以上的滾輪 板狀材料通過該等滾輪之間 ^ ^合’猎由使 (產業上之可利用性） 字鎂片材Ml予以平坦化。 的二裝置以及使用該鎮嶋裝置 品的尺寸精度。因熱滾軋中的溫度變動而導致製 口口貝心化，並可保持成品的品質良好。 320689 12 200927315 ' 【圖式簡單說明】 ' 第1圖係表示本發明之一實施形態的熱滾軋裝置之概 ‘ 略構造的概略正面圖。 - 第2圖係表示整平器之概略構造的模式圖。 【主要元件符號說明】 1 滾軋機 la 工作輥 2 第1加熱爐（上游侧加熱爐） 3 第2加熱爐（下游侧加熱爐） 〇 4 夾持滾輪（一對運送滾輪） 5 第1輥道（上游侧保溫裝置） 5a、6a搬運滾輪 5b、6b保溫蓋 6 第2輥道（下游側保溫裝置） 7 捲取機 8 夾持滾輪（張力賦予裝置）200927315 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a magnesium hot rolling method and an electrothermal rolling device. This case claims the priority of Japanese Patent Application No. 2007-269058, which was filed on October 16, 2007 in Japan, and its contents are cited in the present application. [Prior Art] In the process of producing a town sheet from a magnesium alloy, for example, a round bar-shaped billet having a diameter of 300 to 400 mm and a length of 500 to 600 mm is formed by, for example, thickness 10 by hot pressing. Thick plates below mm. The thick plate is cut into a predetermined length (for example, 3 m) as a cut sheet, and the cut sheet is rolled to a thickness of 1 mm or less by using a coarse roll. Further, when the magnesium alloy is rolled at a normal temperature, it is easily broken even if the pressure is increased, so that hot rolling is preferred. An example of a conventional apparatus for hot rolling a magnesium alloy is disclosed in the first drawing of Patent Document 1 and the first drawing of Patent Document 2. The hot messy device of the patent document has a rolling mill, a magnesium alloy is rolled back and forth; and two twisting furnaces are disposed on the upstream side and the downstream side of the machine; %''Pre-m re-roller is rolling. (Patent Document 2) Japanese Patent No. 3521863 (Patent Document 2) Japanese Patent No. 3817074 [Invention] [Problems to be Solved by the Invention] It is disclosed in the hot rolling apparatus of the above patent document, only in Rolling 4 320689 200927315 There are heating furnaces on both sides of the dryer, so there will be magnesium cutting board; ^ by rolling back and forth, so that the end of the magnesium cutting board protrudes from the heating furnace; the dog is partially cooled This is because the magnesium cutting sheet may cause dimensional accuracy or deterioration of the quality of the finished product due to temperature fluctuations during hot rolling. The present invention has been made in view of the above problems, and aims to provide a heat resistance of the alloy. The method and apparatus for the hot rolling of magnesium in the process of temperature change in Weizhong. The method of solving the problem is to solve the above problems. The present invention adopts the following apparatus/method. The town alloy hot-rolling method is: the rolling step 'on the upstream side of the rolling mill: · /, the upstream heating furnace, and the downstream heating furnace that is heated by the = plate disposed in the above-mentioned rolling machine Inter-machine: 2nd 衮::: The upper raft is arranged in the above-mentioned upstream heating furnace: 砑w ya will have the upper side of the upstream side of the heating/insulation by means of the upstream side. The plate is moved to the downstream side and has been insulated by the downstream downstream = 逑 downstream heating furnace end and the steps of the upper and lower sides of the plate are taken in the step of 'rolling = rolling: The coil is subjected to tension, and the winding machine of the tension applying device on the downstream side of the apparatus performs the downstream side of the downstream side heat insulating device. 320689 5 200927315 In addition, the magnesium alloy crucible rolling mill of the second invention of the present invention applies the magnesium sheet. Rolling back and forth; the upstream side is provided with: the upstream side of the rolling mill is heated and the furnace is heated, and is disposed in the front furnace, disposed on the downstream side of the rolling mill, and is disposed downstream and downstream Heating the upstream side heat insulating device on the side, heating on the upstream side for heating; transporting the upstream side of the upstream side heated by the upstream heating furnace for heat preservation; and the downstream side heat insulating device, arranging the plate 2 and upstream Further downstream of the furnace And transporting the magnesium sheet from the downstream side to the downstream side, and heat-cooling the downstream end portion. The heating furnace of the second invention is heated by the heating furnace of the second invention, the pinch rolier. The nip roller is provided between the above-mentioned 2 and the above-mentioned rolling mill, and the above-mentioned rolling mill and the front furnace (4) are arranged in green, and the thickness is heated on the side to adjust the conveying speed. Further, in the second aspect of the invention, the work roll (the kr〇ller) of the alloy roll-rolling machine and the set-up of the lower-fold array holding roller may be a heating roller. In the hot-drying device with magnesium alloy of Mingming, it is also possible to give tension to the tension of π: on the side of the swim, the lower part of the magnesium plate is _ m2, the tension is _the effect of the device (the effect of the invention) . With the addition of the board ^Invented 'Because the system' is spread over the entire length of the town board - Bianli teaches the edge to roll, so it can suppress the temperature drop of the magnesium plate. 2 = 320689 6 200927315 The temperature variation in the rolling causes the dimensional accuracy of the product. Poor quality, bad quality, and good quality of finished products. * [Embodiment] J Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic front view showing a schematic structure of a hot-drying device 10 (magnesium alloy hot rolling device) of the present embodiment. As shown in Fig. 1, the hot rolling apparatus 1 of the present embodiment includes a rolling mill 1, a first heating furnace 2, a second heating furnace 3, a pinch roller 4, and a first roller. A table roller 5, a second roller table 6, a coiler 7, and a grip roller 8. The rolling mill 1 has a pair of work rolls la that are aligned in parallel, and a drive source (not shown) that rotationally drives the work rolls la. The working light 1 a is a heating roller that raises the surface temperature to a suitable temperature, and sends a predetermined pressure to the magnesium cutting plate M0 by feeding the chopping board and the material M0 (money plate) between the work rolls la in one direction. Thereby, the rolling mill 1 presses the thickness of the magnesium cut sheet M0 to form a strip shape. Further, the rolling mill 1 reverses the conveyance direction of the magnesium cut sheet M0 at a predetermined timing and performs rolling back and forth. By the rolling mill 1, for example, a magnesium cut sheet M0 having a thickness of 6 legs and a length of about 3 m is rolled into a thickness of one leg and a length of about 18 m. Further, the magnesium cut sheet M0 (town plate) belonging to the workpiece of the hot rolling apparatus 100 is a sheet made of a magnesium alloy. The first heating furnace 2 (upstream heating furnace) is a heating furnace disposed on the upstream side of the rolling mill 1. The second heating furnace 3 (downstream heating furnace) is a heating furnace disposed on the downstream side of the milking machine 1 in the case of 7 320689 200927315. The pair of heating furnaces 2 and 3 have a length of the magnesium cutting plate M0 before rolling, which is ‘degree or longer, and includes a heater and a conveying roller (both of which are not shown). The magnesium cut sheet M0 is heated to a predetermined temperature (about 100 to 350 ° C, preferably 200 to 300 ° C) by a heater, and the moving sheet is used to carry the cut sheet M0. The nip roller 4 is a heating roller that raises the surface temperature to a suitable temperature, and assists in carrying the magnesium cut sheet M0 which is moved back and forth with the rolling back and forth by the rolling mill 1. The nip roller 4 is disposed between the rolling mill 1 and the first heating furnace 2, and between the rolling mill 1 and the second heating furnace 3, respectively. The nip rollers 4 apply appropriate tension to the magnesium cut sheet M0 rolled by the rolling mill 1 by adjusting the conveying speed. The first roller table 5 (upstream side heat insulating device) is disposed on the upstream side of the first heating furnace 2, and the second roller table 6 (downstream side heat insulating device) is disposed on the downstream side of the second heating furnace 3. Each of the above-mentioned light rails 5 and 6 has conveyance rollers 5a and 6a and heat insulating covers 5b and 6b. When the magnesium cut sheet M0 is reversely rolled by the rolling mill 1 and becomes long, the ends protrude from the heating furnaces 2, 3. The roller tables 5 and 6 convey/support the ends of the magnesium cut sheet M0 protruding from the heating furnaces 2, 3 by the conveyance rollers 5a and 6a, and are covered by the heat insulating covers 5b and 6b to cut off the outside air. As a result, the roller tables 5, 6 are kept in such a manner that the heat of the cut sheet M0 is not lost. Further, when the reverse rolling is performed, the end portion of the magnesium cut sheet M0 located on the downstream side of the heat retaining portion enters the heating furnace at the next rolling in the opposite direction. 8 320689 200927315 Moreover, when the end heating portion located on the downstream side is rolled in the reverse direction, the above-described operation is alternately repeated in the holding device, and the temperature drop of the end portion can be reduced to be low. The coiler 7 winds up the rolled product of the magnesium cut sheet M0, that is, the magnesium sheet M1 (magnesium sheet). The holding roller 8 (tension applying device) is disposed in front of the winding machine 7. By adjusting the conveying speed of the magnesium sheet M1, the tension is applied to the magnesium sheet M1 in the winding direction and the reverse direction of the winding machine γ. . In the above configuration, the hot rolling apparatus 100 performs coarse drying of the magnesium cut sheet M0. Hereinafter, the operation of the hot rolling apparatus 100 will be described. First, the "cut sheet M0' belonging to the object to be rolled by the hot rolling apparatus 100 is made of, for example, a round bar-shaped billet having a diameter of 3 〇〇 to 4 、 and a length of 500 to 600 mm. The extrusion (1 〇〇 to left and right 'more preferably 20 (Tc) is formed into a slab of, for example, a thickness of 1 ( or less (for example, 6 qing), and the slab is cut into a predetermined length (for example, 3 〇 1). The magnesium crystal grain of the magnesium cut sheet M0 which is formed by hot extrusion is mechanically finened by extrusion, and has high strength and high quality, and is not easily broken, and the press formability is good. The sheet M0 is conveyed from the first roller table 5 to the first heating furnace 2, and is heated in the first heating furnace 2 to a predetermined temperature (1 〇〇 to 35 〇. 〇 about '200 to 300 ° C is preferable) The rolling mill 1 conveys the magnesium cutting sheet M while being rolled to the second heating furnace 3. The temperature of the magnesium cutting sheet M0 moves from the first heating furnace 2 to the second heating furnace 3. Will be slightly lower. However, the work pro and a number of 9 320689 200927315 clamping roller 4 is the heating roller 'and (2) The temperature of the magnesium 'cut sheet M0 is again heated to a predetermined temperature in the heating furnace 3, so the temperature does not change much. The hot rolling apparatus 100 is passed through the rolling mill 1 - at the end of the magnesium cut sheet M0, and the rolling direction is reversed. The hot rolling apparatus 100 repeats the above operation to roll the magnesium cut sheet M0 back and forth, and sequentially presses the thickness of the cut sheet M0 to produce the magnesium sheet M1. Table 1 below shows the use of the hot roll. Specific examples of various values of rough rolling performed by the rolling mill 100. ❹ [Table 1] Pass No. In-side thickness (mm) Reduction amount (mm) Rolling L temperature Ct) Rolling speed (m/min Rolling load (ton) 1 6. 00 1.80 200 10 180 2 4. 20 1.26 200 10 165 3 2. 94 0.88 200 10 150 - 4 2. 06 0.62 200 10 140 5 1.44 0.43 200 10 135 Final thickness: 1 01皿1 In the above specific example, the material of the magnesium cutting plate M0 is AZ31B, and the size is 6.00 mm, the width is 300 mm, and the length is 3,000. The work roll ia has a diameter of 400 mm, the barrel length is 500 awake, and the lost roller 4 has a diameter of 250 mm. Further, in the above specific example, the heating temperatures of the heating furnaces 2, 3 are 220 ° C, the nip roller 4 and the work rolls 1a are heating rollers with built-in heaters, 320689 10 200927315 The surface temperature of the heating rollers is 2 〇〇 °C. Moreover, in the above specific example, the magnesium cut sheet M0 having a thickness of 6.00 mm is made into a magnesium sheet M1 having a thickness of ιοί - leg by rolling back and forth 5 times (back and forth 2.5 times). After 5 passes, the coiler 7 is used for the coiler. The cut sheet M0 is formed into a long strip shape by rolling. When the end portion passes through the rolling mill 1, the end portion including the leading end is formed to protrude from the heating furnaces 2, 3. The roller tables 5, 6 are supported by the conveyance rollers 5a, 6a from the ends projecting from the heating furnaces 2, 3, and are insulated by the heat insulating covers 5b, 6b. © When this is described in more detail in Fig. 1 'For example, the length before rolling. The magnesium cut sheet M0 of L0 is rolled in the section A1 until the length becomes L1 (the first rolling step), in the section A2 Rolling until the length exceeds L1 and becomes L2 (second rolling step), and then is taken up (winding step). That is, the hot rolling apparatus 1 is in the section A1 by the first rolling step when the length of the magnesium cut sheet M0 is L〇 to L1 (that is, the first heating furnace 2 to the rolling mill 1 to the second heating) Between the furnaces 3) rolling back and forth. When the length of the magnesium cut sheet M〇❾ exceeds L1 and becomes L2, the second rolling step is in the section A2 (that is, the first roller 5 to the first heating furnace 2 to the rolling mill 1 to the second heating furnace 3) The second roller path 6 is rolled back and forth. Then, the product is taken up by the winder 7 (i.e., the magnesium sheet M1). Thereby, the magnesium cut sheet M0 is heated or kept throughout the entire length, and is maintained at a constant temperature of 4, thereby preventing the deterioration of the quality of the magnesium product due to the temperature product, and maintaining the finished product (ie, the town sheet mi). The mouth is good. The cut sheet M in the rolling process is softened due to the high temperature. 320689 11 200927315 Soft, if the rolling mill i =, the position is also applied with high pressure, there will be indentation & In this case, in the present hot rolling crack 100, the (four) force of each of the holding rollers 4 is dispersed by the use of a plurality of clamping rollers 4 to displace the ballast sheet M0 at a plurality of positions. 4 caused by the reduction of indentation. Further, after the thickness of the magnesium cut sheet M0 is reduced to a predetermined thickness (for example, about 丄mm) to become the magnesium sheet M1, the hot rolling apparatus 1 is taken up by the coiler 7 to take up the magnesium sheet M1. Coil material. , ❹ Ο At this time, the nip roller 8 adjusts the conveying speed of the magnesium sheet M1 to apply a predetermined tension to the ":: square:::1, and is opposite to the winding direction of the winder 7. Directions toward the magnesium sheet material 欤 执 执 执 根据 根据 根据 根据 根据 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热= degree: = and can maintain the finished product (ie, the object m causes the device to also ==: the two clamping rollers 8 act as a tension imparting 〇 (10) (4) as a leveling flattener here, the leveler is shown in Figure 2, Lier ^ The above-mentioned roller-shaped plate-like material is passed through the two-stage honeycomb-shaped material by means of a cross-section into a honeycomb-like shape, and the magnesium sheet M1 is flattened (industrial availability). The second device and the dimensional accuracy of the product using the ballast device. The temperature of the hot rolling causes the mouth of the mouth to be softened, and the quality of the finished product can be maintained. 320689 12 200927315 ' ' Fig. 1 is a schematic view showing the outline of a hot rolling apparatus according to an embodiment of the present invention. Fig. 2 is a schematic view showing a schematic structure of a screed. [Description of main components] 1 Rolling mill la Work roll 2 1st heating furnace (upstream heating furnace) 3 2nd heating furnace (downstream Side heating furnace) 〇4 Clamping roller (a pair of conveying rollers) 5 1st roller conveyor (upstream side heat preservation device) 5a, 6a conveying roller 5b, 6b thermal insulation cover 6 2nd roller conveyor (downstream side insulation device) 7 Coil Machine 8 clamping roller (tension imparting device)
Al、A2 區間 L0、LI、L2 長度 M0 鎮切板材（鎮板） ❹Ml 鎮片材（鎮板） 100 熱滾軋裝置（鎂合金熱滚軋裝置） 13 320689Al, A2 interval L0, LI, L2 length M0 cut sheet (town plate) ❹Ml town sheet (town plate) 100 hot rolling device (magnesium alloy hot rolling device) 13 320689