200400269 玫、發明說明 [發明所屬之技術領域] 本發明係有關於連續加熱處理金屬帶所使用 愤，甘^ 义熟處理 班“彳寸徵具有，在預備加熱該金屬帶之預熱領域抑制 屬▼表面被氧化，使該金屬帶在加熱領域被杏 一 理還眉从 ^ 田9力ϋ熱處 京的同時，並可抑制在加熱領域内含有的靖 3 邱^、、古山 米^ 原_ 月豆/爪出於外部。 虱 [先前技術] 迄今，為了連續加熱處理金屬帶已使用有各 熱處理爐。 口樣的 而如這樣的熱處理爐係使用有，將空氣等由金屬帶、曾 入口導入預熱領域，被導入該預熱領域之金屬帶以直 火預熱後，在與該預熱領域接連之加熱領域、使該金屬： 在3有虱氣之還原氣體環境中間接加熱且退火之第1钕I 理爐；將由導入口導入預熱領域之金屬帶在含有與加::； 域同樣的氫氣還原氣體環境中間接加熱預熱後，在與該;、 熱領域接連之加熱領域，使該金屬帶在含有氫氣的還原氣 體樣境中間接加熱且退火之第2熱處理爐等。 在此，如上述將由導人道 V入口 V入預熱領域之金屬帶在 1熱處理爐直接點火預埶，g佔 、… 、即使在加熱領域含有的氫氣還 原氣體被導入該預熱領域、萝语# ^遂原乳體中的氫氣被燃燒消 耗’而可防止氫氣經由導全屬 孟屬V之導入口漏出外部。 可是，在第1熱處理燐， 肌 為由直接點火預熱金屬帶， 因此在金屬帶表面有被氧化 飞化之虞，彳寸別，係在變更操作條 314691 5 200400269 件等之時，金屬帶的表面有氧化之情事。 而且’若如此全屬册 ,^ 、 屬T的表面有被氧化，其後，即使在 加熱領域中將該金屬帶200400269 Rose, description of the invention [Technical field to which the invention belongs] The present invention relates to the use of continuous heating treatment of metal strips, and the right-handedness treatment class "彳" has, in the field of preheating for preheating the metal strip to suppress the ▼ The surface is oxidized, so that the metal belt is regained in the heating field by Xing Yili. At the same time, it can suppress the heat in the heating field, and it can suppress the Jing 3 Qiu ^, Gushan rice ^ original_ Moon beans / claws come from the outside. Lice [prior art] Hitherto, various heat treatment furnaces have been used for continuous heat treatment of metal strips. As such, such heat treatment furnaces are used, and air or the like is passed from the metal strips to the inlet. Introduce the preheating area. After the metal strip introduced into the preheating area is preheated by direct fire, the metal is heated in the heating area connected to the preheating area indirectly and then annealed in a reducing gas environment with lice gas. The first neodymium I furnace; the metal strip introduced into the preheating area from the introduction port is heated indirectly in the environment containing the same hydrogen reducing gas as the heating area, and then heated in the heating area connected to the heating area. , The second heat treatment furnace that indirectly heats and anneals the metal strip in a reducing gas sample containing hydrogen. Here, as described above, the metal strip that enters the preheating area from the entrance V of the humanity V is directly ignited in a heat treatment furnace , G, ..., even if the hydrogen-reducing gas contained in the heating field is introduced into the preheating field, the hydrogen in the original milk is consumed by combustion ', which can prevent the introduction of hydrogen through the genus V The mouth leaks to the outside. However, in the first heat treatment, the muscle is preheated by the direct ignition of the metal belt, so the surface of the metal belt may be oxidized and fly. Depending on the size, it is the change of the operating strip 314691 5 200400269 and so on. At the same time, the surface of the metal strip is oxidized. Moreover, if the surface of the metal strip is oxidized, the surface of the metal strip is oxidized.
Fb1 m . ^ -F, * 灰§有氫氣的還原氣體環境令使 間接加熱退火時，該 又 以適當的加熱處理，又；=的還原，就不能施 電解槽浸鑛時，有所二處理過後的金屬帶導入 叮σ月無法適當被電鍍之問題。 另一方面，將由道 與加熱領域同樣的…二預熱領域之金屬帶在含有 使間接加敎預赦，環境中在第2熱處理爐中 接點火子μ;、、、 私金屬帶置於第1熱處理爐中以直 接點人預熱俾以抑制金屬帶表面被氧化。 …尼’:、而罘2熱處理爐的情形，在預熱領域含有的氣氣 遇原氣體有通過導入π、s山^ 7 ^ ^ 产王…“ 漏出外部之問題。特別是，在加埶 處理不銹鋼帶材或古 w …、 氣體中的氫氣濃户 ：必需提高上述在還原 ^ ,θ ^如水咼派度的氫氣還原氣體漏出外部 不仁非吊的危險，同丰古七 — 7 门牯同知、的虱氣大多白白的被浪費，而 k尚了所謂運轉成本之問題。 ” 't:明：連續加熱處理金屬帶所使用之熱處理爐係有 鑑於上述之各項問題而開發者。 令 帶以Ϊ 1 明’為了防止如由導入°導入預熱領域之金屬 :*點火預熱之第1熱處理爐使金屬帶的表面被氧 力：此採用將由導入口導入預熱領域之金屬帶在含有* 同樣的“還原氣體環境中使間接加熱作預熱； 弟2熱處理爐。 314691 6 200400269 而且，於本發明，如在 ^ >卜〆 R日〕弟2熱處理卢 含有氫氣的還原氣俨 爐可防止 丫、虱肢經由導入金屬帶 m 即使將還原氣中氣氣的濃度提高時，也能J漏出外部， 時’也能減低運轉成本作為課題。 i使用的同 [發明内容] 解決課題 在本’X曰月’為了解決如上述的嗶 金屬帶之熱處理爐、連續π U 、在連續加熱處理 u 連纟貝e又置有將由導 在惰性氣體環境中n技14 ¥入之金屬帶 兄宁間接加熱之預熱領域盥， 中預熱之金屬帶在 ^ 在忒預熱領域 熱領域，比上述：W Λ 接加4之力ϋ 同時，在預埶領域鱼^ 4使美同加熱領域的内壓的 的還原氣體流出到預埶領…’。又置有抑制加熱領域内 j預-領域内的抑制機構。 而且，如本發明之熱處理爐， 口導入之金屬册 ^ 在預熱領域中由導入 同將全屬帶u t # 乳肢％ά兄中使間接加熱時，就如 化。今，士要/ 預"、、的以可防止金屬帶表面被氧 化°亥結果，在加熱領域將該金屬册/人士〃々〜 ‘ 環境中使門I 、’ ▼在δ有虱氣還原氣體 辰兄干使間接加熱退火時， :¾ ^ ^ 〆孟屬I被充分的還原、施行 適画的加熱處理，可使將該全 仃 告的兩雄,. 蜀贡冷入電解槽浸鍍時做適 氣體/ 雖能使用各種惰性 成本面而έ ’使用氮氣較為理想。 再者如本發明之熱處理於, 爐、加熱領域的内壓比預熱 領域的内壓高，則可抑制在 郜席# + 頂4領域内之惰性氣體流入加 熱領域内。又，若在預埶 、…1或與加熱領域之間設置抑制加 31469] 7 200400269 …、頁或内的還原氣流出到預熱領域内的 制在加熱領域内含有氮氣之還原氣體甚多；=也可抑 經由導入口漏出外部之情事…，如加 材或莴張七細册 …、爽理不銹鋼帶 -同張力鋼可材時等， 高在加 中的氕氣濞声 u …、7員域之遇原氣體 '、又，也無所謂高濃度的氫氣還& 之危險性的同時，A ^ ^ 、原乳體漏出外部 費，而提” !所谓有“的乳氣甚多白白的被浪 賈而楗π了運轉成本之問題。 再者’在本發明之轨處焯，在 理之金屬帶之出口… 在¥出如上述被加熱處 槽，則可使 、連績設置有浸鍍該金屬帶之電解Fb1 m. ^ -F, * ash § The reducing gas environment with hydrogen makes the indirect heating and annealing should be treated with appropriate heat again; = reduction, when the electrolytic bath can not be immersed, there is a second treatment After the introduction of the metal band, the problem that the metal band cannot be properly plated. On the other hand, the metal belts in the same preheating area as in the second heating zone are included in the second heat treatment furnace, and the metal belts are placed in the second heat treatment furnace. 1 In the heat treatment furnace, the preheater is directly heated to prevent the surface of the metal strip from being oxidized. … Ni ': In the case of 罘 2 heat treatment furnace, the gas contained in the preheating area meets the original gas. The introduction of π, s, ^ 7 ^ ^ King of production ... "The problem of leaking to the outside. Especially in Canada Handling stainless steel strips or hydrogen concentrators in ancient gas…, it is necessary to increase the above-mentioned danger of reducing hydrogen ^, θ ^ such as hydrogen hydration, and reducing the risk of leakage of external hydrogen from the outside, as with Fenggu 7-7. It is known that most of the lice are wasted in vain, and k still has the problem of the so-called running cost. "'T: Ming: The heat treatment furnace used for continuous heat treatment of metal strips was developed in view of the above problems. Let the belt be “1” in order to prevent the introduction of metal in the preheating area by introducing °: * The first heat treatment furnace for ignition preheating makes the surface of the metal belt be oxygenated: This uses a metal belt that is introduced into the preheating area through the inlet. Preheat indirect heating in an environment containing the same "reducing gas"; Di 2 heat treatment furnace. 314691 6 200400269 Moreover, in the present invention, as in ^ > Bu R R] Di 2 heat treatment Lu reducing gas containing hydrogen The oven can prevent the yam and lice limbs from being introduced into the metal band m. Even when the concentration of the gas in the reducing gas is increased, J can leak to the outside, and the operation cost can be reduced as a problem. I use the same [inventive content] solution In order to solve the problem of the heat treatment furnace of the metal belt as described above, the continuous π U and the continuous heating treatment u, the flail shell e is provided with a metal which will be introduced by an inert gas environment. In the pre-heating area with indirect heating, the metal belt with medium pre-heating is in the pre-heating area. In the pre-heating area, it is better than the above: W Λ is added to the force of 4 at the same time. Internal pressure of heating field The original gas flows out to the pre-collar collar ... '. There is also a suppressing mechanism in the pre-suppressing area for suppressing heating. In addition, as in the heat treatment furnace of the present invention, the metal book introduced in the port ^全 属 带 ut # Breast limb %% brother indirect heating, as it is. Today, Shi Yao / Pre " ,, to prevent the surface of the metal band from being oxidized. As a result, the metal book in the heating field / Person 〃々 ~ 'Environment door I,' ▼ When δ has lice gas reducing gas Chen brother annealed indirect heating annealing: ¾ ^ ^ 〆 孟 属 I is fully reduced, suitable heat treatment is performed, It can make the two males who are all obituaries, Shu Gong cold into the electrolytic cell immersion plating suitable gas / although can use a variety of inert cost surface and use nitrogen is more ideal. Moreover, as the heat treatment of the present invention, the furnace If the internal pressure in the heating area is higher than the internal pressure in the preheating area, it can prevent the inert gas in the 郜 ## 顶 4 area from flowing into the heating area. Also, if it is between the preheating, ... 1 or the heating area Setting Suppression 31469] 7 200400269…, page or within In the field of preheating, there are many reducing gases containing nitrogen in the field of heating; = It is also possible to suppress the leakage of the outside through the inlet ... such as adding materials or lettuce leaflets ..., Shuangli stainless steel belt-the same tension Steel can be graded at the same time, high radon snoring noise u…, 7-member encounter with the original gas', and there is no danger of the so-called high-concentration hydrogen concentration & A ^ ^, raw milk Leakage of external expenses and mentioning the "!" So-called "milk gas" is a problem of running costs caused by vain waves. Furthermore, 'at the track of the present invention, at the exit of the metal belt ... If the tank is heated as described above, the electrolysis of the metal strip can be installed and continuously installed.
可防止加熱領：:：理？金屬帶被適當的電鑛之同時，也 側漏出。、5 3的虱氣退原氣體自該熱處理爐的出D 理的金屬明之熱處理爐，在導出如在上述被加熱處 使該冷卻領域的二卜設有已填充惰性氣體之冷卻領域， 設置有抑制加哉領^上述加熱領域的内壓低的同時，若 第2抑制機構，及7 “原乳體流出到該冷卻領域内的 熱領域内的同日士 ’抑制在冷卻領域内之惰性氣體流入加 氣體甚多流人也抑制了在加熱領域内含有的氫氣還原 [實施方式] 7 σρ領域内由出口側漏出外部之情事。 以下，根伊、、夭 例之熱處理爐圖式具體的說明有關於在本發明實施 貫施例1之办 六、、处理爐係如在第1圖所示，金屬帶1由 31469] 8 200400269 ，在該予貝 間接加熱 導入口 10導入已填充惰性氣體之預熱領域U内 熱領域11内使上述金屬帶丨在惰性氣體環境中 做預熱。 牡此，砀貫祕們1，係在上述預教 …唄域11内自惰性 氣體供給裝置1 2供給作為惰性氣體气 且〜火L虱。而且，若如 此在已供給惰性氣體之預熱領域丨丨.内 ，田¥入口 1〇所導入Prevents heating collars ::: Reason? The metal strip is leaking sideways while being properly electro-mineralized. , 5 3 The lice gas degenerative gas is discharged from the heat treatment furnace of the metal heat treatment furnace of the heat treatment furnace, and the cooling area filled with the inert gas is provided in the cooling area as described above at the heated place. Suppression of the increase in heating collar ^ While the internal pressure in the above heating area is low, if the 2nd suppression mechanism and 7 "same day as the original milk flowing out of the cooling area in the cooling area," the inert gas in the cooling area is prevented from flowing into the processing area. The flow of a large amount of gas also suppresses the reduction of hydrogen contained in the heating field. [Embodiment] 7 Leakage of the outside from the outlet side in the σρ field. In the following, the specific description of the heat treatment furnace patterns In the implementation of Embodiment 1 of the present invention, the processing furnace system is as shown in FIG. 1. The metal belt 1 is 31469] 8 200400269. The preheating filled with inert gas is introduced into the indirect heating inlet 10. In the field U, the above-mentioned metal belt is preheated in an inert gas environment in the thermal field 11. In this way, the first person 1 is based on the above-mentioned pre-education ... The inert gas supply device 12 in the field 11 is supplied as inert. ~ L and the gas fire body lice. Further, if as in this field has been supplied preheated inert gases Shushu inner, field introduced ¥ inlet 1〇
之金屬帶1藉由間接加哉裝詈13門姑| A …、衣置U間接加熱，及如將金屬 帶1以直接點火預熱時可防止金屬帶 日〕表面破氧化。 接著，如上述將已預熱之金屬帶 Ί η „ Φ 边過連結預埶領域 11與加熱領域14之第i連結部15 …貝 如^ 命入加熱領域1 4内， 在“加熱領域14内，將上述金屬帶丨在#! ^ ^ 3有氫氣還原氣 -之中間接加熱，使金屬帶i 一邊還原—邊退火。 在此，該實施例1係在上述加埶 v 體供仏奘罟以处认入— …員域14内自還原氣 1八、、、口衣置1 6供給含氫氣之還原 氫氣之、萝馬々灿 ^展乳肢，如此在已供給含 ”之逖原乳肢之加熱領域〗4内， 拉 稭由間接加敎步罟1 7 間接加熱金屬帶丨。 …、衣置1 / 再者’如在上述加熱領域ί#内 1 6供认人^ γ 由硬原氣體供給裝置 Ι、、.·。含IL氣之還原氣體中，將該加 衣置 由控制裝詈ί去FI H …、項域丨4之内壓藉 、圖不）控制在比上述埶 微高、以防止力箱办、 、…、項域11之内壓稍 在預；^領域11内之，丨左卜斗 域Μ内。 内之丨月性氣體流入該加熱領 結部15內，女......人加-領域14之上述第； ’有抑制加熱領域1 4内含々 ^ 到預熱領域]]向 虱虱之逛原氣體$ 貝戮11内之抑制機構18，在 仕得近运料滾子l8a 314691 9 200400269 有抑止構件1Sb。該結果，可抑 氣所還原氣體透過第！連結部15在加熱領域14内含氫 可抑制自預熱領域u經過上述/人預熱領域11内，且 含右气斤A >入〇10與惰性氣體一起 有虱氣的逻原氣體漏出外部。 而且，如上述在加熱領域 m , 内使間接加埶後之金屬 μ’將該金屬帶i透過連結加 u 之當。、 … …、7員域1 4與冷卻領域1 9 弟2連結部2 〇導入與加哉 之逻语 > 邮冲 ‘、、、？員域丨4同樣已供給含有氫氣 V原氣爿豆之弟1冷卻領域1 9內 內、入〃 在该第1冷卻領域19 鬥冷部上述金屬帶1。 接著，將該金屬帶1透過遠处# 2入” 、°弟1冷卻領域1 9與第 ~部領域2 1之第3連結部22導 Α γ μ —入弟2冷卻領域2 1内， ^乐2冷卻領域2 1内使上述全 苴沾 心至屬贡1的溫度均一化。 ”後，將該金屬帶i透過導出部 ^ ^ ^ 丨冷入收谷電解液24a 〈笔解槽24，浸鍍金屬帶1。 在該實施例1之熱處理爐， 凰慨 I 如上述在預熱領域1 1金 蜀朮1的表面不會被氧化，由於 # ^ ^ 田万…亥金屬帶1於加熱領域14 的遇原且退火，因此如上 滴A 述孟屬f1在電鍍時，可 〇畜的電鍍該金屬帶1。 〃在實施例2之熱處理爐，係如第2圖所示，與 %例1之熱處理爐情形同樣，將金屬帶！由導入口 W導’、 入填充有惰性氣體之預熱領域n内，在該預熱領域”内 使金屬帶1在惰性氣體環境中被間接加熱預熱。 而且，將如此被預熱之金屬”透過上述抑制機構]8 ]〇 3】469] 200400269 所設置之第i連結部15導入加熱領域14内，在該加熱領 域14内，在含有氣氣的還原氣體中間接加熱上述金屬帶 1’使金屬帶1 一邊還原、〆邊退火。 其後，將該金屬帶丨透過第2連結部2〇導入與加熱 領幻4同樣已供給含有氫氣的還原氣體之第丄冷卻領域 1 9内’在該第1冷抑領域1 9使金屬帶i冷卻。 、接著’在該實施例2之熱處理爐，將如上述在第"令 〇P 7員或19内破冷部之金屬帶1 ’透過連結該第1冷卻領 域與第2冷卻領域21之第3連結部22導入已埴充有 惰性氣體之第2冷卻領域21内。然後，在該第2冷卻領 域2 1内使上述舍屬册 洛 、蜀咿1的★度均一化之後，將該金屬帶 1，^過導出口 25送出外部。 在此’將該實施例2之熱處理爐，係如在上述第2冷 ㈣域：内自惰性氣體供給裝置供給作為惰性氣體之 控制裝置（未圖示）控制使該第2冷卻領域21之 ==1冷部領域19之内厂堅稍微低。若如此做， =㈣弟2冷卻領域21内的惰性氣體透過第3連結 卻領域19内，更可抑制透過上述第2連 結4 20流入加熱領域14内。 :者’在連結第"令卻領域19與第2冷卻領域。之 3連結部22内’作為抑制在第！冷卻領域19内含 鼠氣之還原氣體流出到第2冷卻領域21内之第2抑制機 構，在接近供料滾子27a設有抑止構件27b。該結果，可 抑制含有氨氣的還原氣體與在第2冷卻領域21内之惰性 314691 200400269 氣體一起透過上述導出口 25漏出外部。 然而’在上述實施例1、2，雖設置有兩個冷卻領域1 9、 2 1，但未必必須設置兩個冷卻領域，可設置一個冷卻領域， 或設置更多個冷卻領域等之變更可隨意施行。 發明效i 如以上詳述，在本發明之熱處理爐，由於作成自導入 口將金屬帶導入在惰性氣體環境中之預熱領域使間接加 熱，因此如以直接點火預熱金屬帶的情形並無所謂有金屬 帶表面被氧化之危險’在加熱領域將該金屬帶置於含有氫 氣的還原氣體環境中使間接加熱且退火時，該金屬帶被充 分的還原施行適當的加熱處理，將該金屬帶導入電解槽浸 鍍時’可適當的電鍍金屬帶。 再者’在本發明之熱處理爐，由於作成加熱領域的内 壓比預熱領域的内壓高，因此可抑制在預熱領域之惰性氣 體流入加熱領域内。又，由於在預熱領域與加熱領域之間 設置有抑制加熱領域内還原氣體流出預熱領域之抑制機 構，因此也可抑制在加熱領域内含有的氫氣還原氣體大多 流入預熱領域自導入口漏出外部。 夕 該結果，如加熱處理不 使提高在加熱領域之還原氣 南〉辰度的氫氣還原氣體漏出 謂高價的氫氣多半被白白浪 事。 銹鋼帶材，施行電鍍時等， 體中氫氣的濃度，也沒有所 外部之危險性，同時也没有 費，而提高運轉成本花費之 即 謂 所 情 [圖式簡單說明] 31469] ]2 200400269 第1圖係有關於本發明實施例1之熱處理爐概略說明 圖。 第2圖係有關於本發明實施例2之熱處理爐概略說明 圖。 1 金 屬 帶 10 導入’ 口 11 預 孰 4 領域 12 惰 性 氣 體 供 給 裝 置 13 間 接 加熱 裝 置 14 加 熱 領 域 15 第 1 連結 部 16 還 原 氣 體 供 給 裝 置 17 間 接 加熱 裝 置 18 抑 制 機 構 19 第 1 冷卻 領 域 20 第 2 連 結 部 21 第 2 冷卻 領 域 22 第 3 連 結 部 23 導 出 部 24 電 解槽 25 導 出 Ό 26 惰 性 氣 體 供 給 裝 置 27 第 2 抑制 機 構 13 314691The metal strip 1 is indirectly heated by indirectly adding 13 gates | A…, the clothing U is indirectly heated, and the surface of the metal strip 1 can be prevented from oxidizing when the metal strip 1 is preheated by direct ignition. Next, as described above, the pre-heated metal strip Ί η „Φ is connected to the i-th connection portion 15 of the pre-heating area 11 and the heating area 14 ... Beru ^ is entered into the heating area 14 and in the" heating area 14 " , The above-mentioned metal strip 丨 is heated indirectly in the presence of hydrogen reducing gas in #! ^ ^ 3, so that the metal strip i is annealed while being reduced. Here, this embodiment 1 is recognized at the place where the above-mentioned v-body is provided-... within the member field 14 from the reducing gas 18, and the mouthpiece 16 is supplied with the reducing hydrogen containing hydrogen. Ma Biancan ^ showed his breasts, so in the heating field that has been supplied with "逖 原 breast limbs" 4, the indirect heating of the straw is performed by the indirect heating step 1 7 to indirectly heat the metal belt 丨, clothing 1 / again ' For example, in the above heating field, # 1, 6 confessing people ^ γ from the hard raw gas supply device I, .... In the reducing gas containing IL gas, the clothing is placed under the control device to FI H ... The pressure within the domain 4 is controlled to be slightly higher than the above, in order to prevent the internal pressure of the force box office, ..., etc. from being slightly in advance; within the domain 11, Zuobudou domain M Inside. The monthly gas flows into the heating bow-tie portion 15, the female ... the person in the above-mentioned field 14; 'there is a heating-inhibiting field 1 4 containing 々 ^ to the pre-heating field]] to The control mechanism 18 in the original gas $ 11 in the beetle 11 has a suppressing member 1Sb at Shide near the roller l8a 314691 9 200400269. As a result, the reduced gas can be suppressed from passing through the first The connection portion 15 contains hydrogen in the heating area 14 to inhibit self-heating area u passing through the above / person pre-heating area 11 and contains the right gas pound A > 〇10 logic gas with lice gas together with inert gas It leaks to the outside. In addition, as mentioned above, in the heating area m, the metal μ ′ after indirect addition is used to connect the metal band i through the connection u...... 7 member domain 1 4 and cooling domain 1 9 brother 2 The linking section 2 〇 The introduction and the logic of the plus & 冲 冲 ,,, ?? member field 丨 4 have also been supplied with hydrogen V raw gas 爿 younger brother 1 cooling field 1 9 within, enter 〃 in the first Cooling area 19 The above-mentioned metal belt 1 in the bucket cooling section. Next, pass the metal belt 1 through the distant place # 2 and enter the cooling zone 19 of the first cooling zone 19 and the third connecting section 22 of the first through the first zone 21 γ μ -Into the cooler area 21 of the younger brother 2 and to homogenize the temperature in the cooler area 21 to the tribute 1. After that, the metal strip i is passed through the lead-out section ^ ^ ^ 丨 and cold-received into the grain-receiving electrolyte 24a <pencil solution tank 24, and the metal strip 1 is immersed. The surface of the hot zone 1 1 Jin Shushu 1 will not be oxidized. Because # ^ ^ Tian Wan ... Hai metal belt 1 meets the original in the heating zone 14 and is annealed. Therefore, as described in the above drop A, the Mons f1 can be electroplated. The metal strip 1 is electroplated for livestock. 〃The heat treatment furnace of Example 2 is shown in FIG. 2 as in the case of the heat treatment furnace of% Example 1. The metal strip is guided from the inlet W, and filled with inertness. In the preheating area n of the gas, in the "preheating area", the metal belt 1 is indirectly heated and preheated in an inert gas environment. In addition, the preheated metal "is passed through the above-mentioned suppression mechanism] 8] 〇3] 469] 200400269 is introduced into the heating area 14, and in this heating area 14, the gas containing gas is reduced. The above-mentioned metal strip 1 ′ is indirectly heated in the gas to anneal the metal strip 1 while reducing it. Then, the metal strip 丨 is introduced through the second connection portion 20 into the reducing gas containing hydrogen, which has been supplied in the same manner as the heating collar 4. Within the first cooling zone 19 ', the metal belt i is cooled in the first cooling zone 19. Then, in the heat treatment furnace of the second embodiment, as described above, it will be included in the " Order 0 member or 19 The metal strip 1 ′ of the cold-breaking portion is introduced into the second cooling area 21 filled with an inert gas through the third connecting portion 22 connecting the first cooling area and the second cooling area 21. Then, in the second cooling area After uniformizing the degrees of the above-mentioned Sheluo and Shuyu 1 in 2 1, the metal strip 1 is sent to the outside through the guide outlet 25. Here, the heat treatment furnace of Example 2 is as described above. Second cold heading zone: Internally supplied as an inert gas from an inert gas supply device The control device (not shown) controls the second cooling area 21 == 1, and the factory area in the cold area 19 is slightly lower. If so, the inert gas in the cooling area 21 of the second brother passes through the third connection but In the field 19, the inflow into the heating field 14 through the above-mentioned second connection 4 20 can be further inhibited. The person 'in the connection section " order field 19 and the second cooling field. 3 in the connection section 22' is suppressed as the first! The second suppressing mechanism in which the reducing gas containing rat gas in the cooling area 19 flows out to the second cooling area 21 is provided with a suppressing member 27b close to the feed roller 27a. As a result, the reducing gas containing ammonia and the The inert gas 314691 200400269 in the second cooling area 21 leaks out through the above-mentioned outlet 25. However, in the above-mentioned embodiments 1 and 2, although two cooling areas 19 and 21 are provided, it is not necessary to provide two cooling areas. In the field, one cooling field can be set, or more cooling fields can be set. The effect of the invention i As detailed above, in the heat treatment furnace of the present invention, since the metal strip is introduced into the inert gas environment through the introduction port The preheating field makes indirect heating, so if the metal strip is preheated by direct ignition, there is no danger of the surface of the metal strip being oxidized. In the heating field, the metal strip is placed in a reducing gas environment containing hydrogen to indirectly heat and During annealing, the metal strip is sufficiently reduced and subjected to appropriate heat treatment. When the metal strip is introduced into an electrolytic bath, the metal strip can be appropriately electroplated. Furthermore, in the heat treatment furnace of the present invention, since it is produced in the heating field, The pressure is higher than the internal pressure in the preheating area, so that inert gas in the preheating area can be prevented from flowing into the heating area. In addition, since the reducing gas in the heating area is prevented from flowing out of the preheating area between the preheating area and the heating area, The suppressing mechanism can also prevent most of the hydrogen reducing gas contained in the heating area from flowing into the preheating area and leaking from the introduction port to the outside. As a result, if the heat treatment does not increase the reducing gas in the heating field, the hydrogen reducing gas that leaks out of the air will be leaked. For rust steel strips, when performing electroplating, etc., the concentration of hydrogen in the body does not have external dangers, and there is no cost, and the increase in operating costs is what it means [Schematic description] 31469] Fig. 1 is a schematic explanatory view of a heat treatment furnace according to the first embodiment of the present invention. Fig. 2 is a schematic illustration of a heat treatment furnace according to a second embodiment of the present invention. 1 Metal strip 10 Introduction 'Port 11 Pre-heating 4 Field 12 Inert gas supply device 13 Indirect heating device 14 Heating field 15 First connection section 16 Reducing gas supply device 17 Indirect heating device 18 Suppression mechanism 19 First cooling field 20 Second connection Section 21 Second cooling area 22 Third connection section 23 Leading section 24 Electrolyzer 25 Leading radon 26 Inert gas supply device 27 Second suppressing mechanism 13 314691