TWI473884B - Continuous annealing furnace - Google Patents
Continuous annealing furnace Download PDFInfo
- Publication number
- TWI473884B TWI473884B TW98120556A TW98120556A TWI473884B TW I473884 B TWI473884 B TW I473884B TW 98120556 A TW98120556 A TW 98120556A TW 98120556 A TW98120556 A TW 98120556A TW I473884 B TWI473884 B TW I473884B
- Authority
- TW
- Taiwan
- Prior art keywords
- ambient gas
- annealing furnace
- continuous annealing
- combustion
- heating zone
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/565—Sealing arrangements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5735—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
Description
本發明係關於一種連續退火爐，係使經由入口密封部而導入之處理材在包含氫氣之環境氣體中連續從加熱區搬送至冷卻區，並於加熱區對處理材進行間接加熱後，於冷卻區使如上述方式加熱之處理材冷卻、退火，再經由出口密封部使經退火處理之處理材導出者。特別是具有以下之特徵：為了補充從上述入口密封部或出口密封部漏出之環境氣體，並且使與處理材一同導入至連續退火爐內之氧與氫氣產生反應以進行處理，而在將包含氫氣之環境氣體從環境氣體供給裝置供給至連續退火爐內之情形下，抑制供給至連續退火爐內之過剩的環境氣體排出至外部，並且有效地利用包含於過剩之環境氣體的氫氣。The present invention relates to a continuous annealing furnace in which a processing material introduced through an inlet sealing portion is continuously conveyed from a heating zone to a cooling zone in an ambient gas containing hydrogen, and indirectly heated in a heating zone, and then cooled. The treatment material heated as described above is cooled and annealed, and the annealed treatment material is led out through the outlet sealing portion. In particular, it is characterized in that the ambient gas leaking from the inlet sealing portion or the outlet sealing portion is supplemented, and oxygen and hydrogen introduced into the continuous annealing furnace together with the processing material are reacted for processing, and hydrogen is contained therein. When the ambient gas is supplied from the ambient gas supply device to the continuous annealing furnace, excess ambient gas supplied into the continuous annealing furnace is suppressed from being discharged to the outside, and hydrogen gas contained in the excess ambient gas is effectively utilized.
以往，在連續退火爐中使由冷軋等方式所獲得之不鏽鋼鋼帶等長形狀之處理材進行退火處理時，進行輝面退火(bright annealing)處理，俾使上述處理材之表面的光澤不致受損。Conventionally, when a stainless steel strip obtained by cold rolling or the like is annealed in a continuous annealing furnace, a bright annealing treatment is performed to cause the gloss of the surface of the treated material to be unsatisfactory. Damaged.
再者，如上所述在連續退火爐中使長形狀之處理材進行輝面退火處理時，如第1圖所示，經由入口密封部11將長形狀之處理材1導入至填充有包含氫氣之環境氣體(一般而言係以氫氣及氮氣為主成分之環境氣體)的連續退火爐10內，並且在連續退火爐10內之加熱區12對該處理材1進行間接加熱，將如上方式加熱之處理材1導入至冷卻區13a至13c並使之冷卻，再經由滑槽(chute)15將該處理材1從設有滾輪14a之頂輥室14導入至出口密封部16，並使該處理材1經由出口密封部16從連續退火爐10內導出(參照例如後述之專利文獻1、2)。Further, when the long-shaped processing material is subjected to the glow annealing treatment in the continuous annealing furnace as described above, as shown in FIG. 1, the long-shaped processing material 1 is introduced into the filled portion containing the hydrogen gas via the inlet sealing portion 11. The ambient gas (generally an ambient gas containing hydrogen and nitrogen as a main component) is continuously cooled in the furnace 10, and the treatment material 1 is indirectly heated in the heating zone 12 in the continuous annealing furnace 10, and heated as described above. The treatment material 1 is introduced into the cooling zones 13a to 13c and cooled, and the treatment material 1 is introduced from the top roller chamber 14 provided with the roller 14a to the outlet sealing portion 16 via a chute 15, and the treatment material is made 1 is taken out from the continuous annealing furnace 10 via the outlet sealing portion 16 (see, for example, Patent Documents 1 and 2 to be described later).
在此，在上述連續退火爐10中，為了補充從上述入口密封部11或出口密封部16漏出之環境氣體，並且使與處理材1一同導入至連續退火爐10內之氧與包含在環境氣體之氫氣產生反應以進行處理，而將包含氫氣之環境氣體從環境氣體供給裝置20供給至連續退火爐10內。Here, in the above-described continuous annealing furnace 10, in order to supplement the ambient gas leaking from the inlet sealing portion 11 or the outlet sealing portion 16, and to introduce the oxygen into the continuous annealing furnace 10 together with the processing material 1, it is contained in the ambient gas. The hydrogen gas is reacted for processing, and the ambient gas containing hydrogen is supplied from the ambient gas supply device 20 to the continuous annealing furnace 10.
再者，如上所述將包含氫氣之環境氣體從環境氣體供給裝置20供給至連續退火爐10內時，一般而言為了使與處理材1一同導入至連續退火爐10內之氧與包含在環境氣體之氫氣產生反應以充分地進行處理，係將前述環境氣體從環境氣體供給裝置20過剩地供給至連續退火爐10內。Further, when the ambient gas containing hydrogen is supplied from the ambient gas supply device 20 to the continuous annealing furnace 10 as described above, in general, oxygen is introduced into the continuous annealing furnace 10 together with the processing material 1 and is contained in the environment. The hydrogen gas of the gas is reacted to be sufficiently treated, and the ambient gas is excessively supplied from the ambient gas supply device 20 to the continuous annealing furnace 10.
在此，如上所述將環境氣體從環境氣體供給裝置20過剩地供給至連續退火爐10內時，由於該連續退火爐10內之環境氣體的壓力逐漸上升，因此必須使連續退火爐10內之環境氣體排出至外部。特別是，近年來上述入口密封部11或出口密封部16係使用氣密性高之輥密封件等，而有從入口密封部11或出口密封部16漏出之環境氣體之量變少、且從連續退火爐10內排出之環境氣體之量增加的傾向。Here, when the ambient gas is excessively supplied from the ambient gas supply device 20 to the continuous annealing furnace 10 as described above, since the pressure of the ambient gas in the continuous annealing furnace 10 gradually rises, it is necessary to make the inside of the continuous annealing furnace 10 The ambient gas is discharged to the outside. In particular, in the inlet seal portion 11 or the outlet seal portion 16 in recent years, a roll seal or the like having high airtightness is used, and the amount of ambient gas leaking from the inlet seal portion 11 or the outlet seal portion 16 is reduced and continuous The tendency of the amount of ambient gas discharged in the annealing furnace 10 to increase.
再者，如上所述使環境氣體從連續退火爐10內排出時，為了使包含在環境氣體之氫氣不會燃燒，而必須使該環境氣體冷卻，或以空氣稀釋環境氣體，以致有成本變高、且包含在過剩之環境氣體的氫氣浪費的問題。Further, when the ambient gas is discharged from the continuous annealing furnace 10 as described above, in order to prevent the hydrogen contained in the ambient gas from burning, it is necessary to cool the ambient gas or dilute the ambient gas with air, so that the cost becomes high. And the problem of wasted hydrogen in excess ambient gas.
(專利文獻1)日本特開平3-134120號公報(Patent Document 1) Japanese Patent Laid-Open No. 3-134120
(專利文獻2)日本特開平7-268493號公報(Patent Document 2) Japanese Patent Laid-Open No. Hei 7-268493
本發明之目的係在於解決連續退火爐之上述問題，該連續退火爐係使經由入口密封部而導入之處理材在包含氫氣之環境氣體中連續從加熱區搬送至冷卻區，並於加熱區對處理材進行間接加熱後，於冷卻區使如上述方式加熱之處理材冷卻、退火，再經由出口密封部使經退火處理之處理材導出者。The object of the present invention is to solve the above problems of the continuous annealing furnace, wherein the treatment material introduced through the inlet sealing portion is continuously conveyed from the heating zone to the cooling zone in the ambient gas containing hydrogen, and is in the heating zone. After the treatment material is indirectly heated, the treated material heated as described above is cooled and annealed in the cooling zone, and the annealed treated material is led out through the outlet sealing portion.
亦即，本發明之目的係在於：為了如上所述補充從上述入口密封部或出口密封部漏出之環境氣體，並且使與處理材一同導入至連續退火爐內之氧與氫氣產生反應以充分地進行處理，而在將前述環境氣體從環境氣體供給裝置供給至連續退火爐內之情形下，抑制供給至連續退火爐內之過剩的環境氣體排出至外部，並且有效地利用包含於過剩之環境氣體的氫氣。That is, the object of the present invention is to replenish the ambient gas leaking from the inlet seal portion or the outlet seal portion as described above, and to cause oxygen and hydrogen gas introduced into the continuous annealing furnace together with the treatment material to react sufficiently with the hydrogen gas. In the case where the ambient gas is supplied from the ambient gas supply device to the continuous annealing furnace, the excess ambient gas supplied into the continuous annealing furnace is suppressed from being discharged to the outside, and the ambient gas contained in the excess is effectively utilized. Hydrogen.
為了要解決前述課題，本發明之連續退火爐係具備：入口密封部，使長形狀之處理材導入；加熱區，藉由燃燒部之燃燒使處理材間接加熱；冷卻區，用以冷卻經加熱之處理材；及出口密封部，使經冷卻之處理材導出；並且使經由前述入口密封部而導入之處理材在包含氫氣之環境氣體中連續從前述加熱區搬送至冷卻區並使之退火，並經由前述出口密封部使經退火處理之處理材導出者；在該連續退火爐內設置有：環境氣體供給裝置，用以將前述環境氣體供給至該連續退火爐內；及環境氣體控制裝置，用以將連續退火爐內之過剩的環境氣體導引至前述加熱區之燃燒部。In order to solve the above problems, the continuous annealing furnace of the present invention comprises: an inlet sealing portion for introducing a long-shaped processing material; a heating portion for indirectly heating the processing material by combustion of the burning portion; and a cooling portion for cooling and heating And the outlet sealing portion, the cooled processing material is led out; and the processing material introduced through the inlet sealing portion is continuously conveyed from the heating zone to the cooling zone and annealed in an ambient gas containing hydrogen gas. And discharging the annealed treated material through the outlet sealing portion; wherein the continuous annealing furnace is provided with: an ambient gas supply device for supplying the ambient gas into the continuous annealing furnace; and an ambient gas control device, The method is used to guide excess ambient gas in the continuous annealing furnace to the combustion portion of the heating zone.
在此，在該連續退火爐中，用以使處理材間接加熱之前述加熱區係可使用在供處理材通過之內管的外周側設置外管、且在前述內管與外管之間的燃燒部中進行燃燒者，亦即使用所謂之隔焰(muffle)式者。Here, in the continuous annealing furnace, the heating zone for indirectly heating the treatment material may be provided with an outer tube on the outer peripheral side of the inner tube through which the treatment material passes, and between the inner tube and the outer tube. The person who burns in the burning portion uses the so-called muffle type.
再者，在前述內管與外管之間的燃燒部中進行燃燒時，係可在前述外管設置燃燒器等燃燒裝置。Further, when the combustion is performed in the combustion portion between the inner tube and the outer tube, a combustion device such as a burner may be provided in the outer tube.
此外，在前述連續退火爐中，藉由環境氣體控制裝置將連續退火爐內之過剩的環境氣體導引至加熱區之燃燒部時，在環境氣體之溫度非常高的情形下，由於機器類之耐熱性等原因，難以將環境氣體導引至加熱區之燃燒部，因此較佳為將過剩之環境氣體從環境氣體經某種程度冷卻之冷卻區導引至加熱區之燃燒部。Further, in the continuous annealing furnace, when the excess ambient gas in the continuous annealing furnace is guided to the combustion portion of the heating zone by the ambient gas control device, in the case where the temperature of the ambient gas is very high, For reasons such as heat resistance, it is difficult to guide the ambient gas to the combustion portion of the heating zone. Therefore, it is preferable to guide the excess ambient gas from the cooling zone where the ambient gas is cooled to some extent to the combustion section of the heating zone.
再者，如上方式藉由環境氣體控制裝置將過剩的環境氣體從連續退火爐內導引至加熱區之燃燒部時，由於包含在該環境氣體之氫氣會在燃燒部中適當地燃燒而消耗，因此前述燃燒部之溫度較佳為氫氣之著火溫度以上。Further, when the excess ambient gas is guided from the continuous annealing furnace to the combustion portion of the heating zone by the ambient gas control device as described above, since the hydrogen contained in the ambient gas is appropriately burned in the combustion portion, it is consumed. Therefore, the temperature of the combustion portion is preferably equal to or higher than the ignition temperature of the hydrogen gas.
在本發明之連續退火爐中，由於係作成如上方式藉由環境氣體控制裝置將連續退火爐內之過剩的環境氣體從連續退火爐內導引至加熱區之燃燒部，因此如上方式導入之過剩的環境氣體所含之氫氣會在該燃燒部中燃燒。In the continuous annealing furnace of the present invention, since the excess ambient gas in the continuous annealing furnace is guided from the continuous annealing furnace to the combustion portion of the heating zone by the ambient gas control device as described above, the excess is introduced as described above. The hydrogen contained in the ambient gas is burned in the combustion section.
結果，在本發明之連續退火爐中，連續退火爐內之過剩的環境氣體所含之氫氣將有效地利用在加熱區之燃燒部中的燃燒，並且抑制過剩的環境氣體從連續退火爐內排出至外部，且無須使該環境氣體冷卻，或以空氣稀釋環境氣體，而使成本減低。As a result, in the continuous annealing furnace of the present invention, the hydrogen contained in the excess ambient gas in the continuous annealing furnace will effectively utilize the combustion in the combustion portion of the heating zone, and suppress the excess ambient gas from being discharged from the continuous annealing furnace. To the outside, and without having to cool the ambient gas, or dilute the ambient gas with air, the cost is reduced.
以下，依據圖式具體地說明本發明之實施形態的連續退火爐。再者，本發明之連續退火爐並非限定於下述之實施形態所示者，在不變更發明之要旨的範圍內，可適當變更而實施者。Hereinafter, a continuous annealing furnace according to an embodiment of the present invention will be specifically described based on the drawings. In addition, the continuous annealing furnace of the present invention is not limited to the embodiments described below, and may be appropriately modified and implemented without departing from the scope of the invention.
如第2圖所示，在該實施形態中，經由入口密封部11將由冷軋方式所獲得之不鏽鋼鋼帶等長形狀之處理材1導入至填充有包含氫氣之環境氣體(一般而言係以氫氣及氮氣為主成分之環境氣體)的連續退火爐10內。As shown in Fig. 2, in the embodiment, the processing material 1 of the same length of the stainless steel strip obtained by the cold rolling method is introduced into the ambient gas filled with hydrogen gas via the inlet sealing portion 11 (generally In the continuous annealing furnace 10 of hydrogen and nitrogen as the main component of the ambient gas.
在此，在前述入口密封部11中，為了抑制填充於連續退火爐10內之前述環境氣體流出至外部，而使用輥密封件11a。Here, in the inlet seal portion 11, a roller seal 11a is used in order to prevent the ambient gas filled in the continuous annealing furnace 10 from flowing out to the outside.
並且，在該連續退火爐10中，如上述方式使經由入口密封部11導入之處理材1在加熱區12進行間接加熱。Further, in the continuous annealing furnace 10, the treatment material 1 introduced through the inlet sealing portion 11 is indirectly heated in the heating zone 12 as described above.
在此，如上述方式使處理材1在加熱區12進行間接加熱時，將該加熱區12作成為雙重管構造，並使前述處理材1通過加熱區12之內管12a內，並且在外管12b設置燃燒器等燃燒裝置12c，藉由該燃燒裝置12c在內管12a與外管12b之間的燃燒部12d進行燃燒，而使通過內管12a內之處理材1進行間接加熱。Here, when the treatment material 1 is indirectly heated in the heating zone 12 as described above, the heating zone 12 is made into a double pipe structure, and the treatment material 1 is passed through the inner tube 12a of the heating zone 12, and in the outer pipe 12b. The combustion device 12c such as a burner is provided, and the combustion device 12c is combusted by the combustion portion 12d between the inner tube 12a and the outer tube 12b to indirectly heat the treatment material 1 passing through the inner tube 12a.
再者，在該加熱區12中，經由排氣管12e將上述燃燒部12d中燃燒後之燃燒排氣導引至冷卻裝置12f，並藉由該冷卻裝置12f使燃燒排氣冷卻後，使該燃燒排氣從排氣管12e排出至外部。Further, in the heating zone 12, the combustion exhaust gas burned in the combustion portion 12d is guided to the cooling device 12f via the exhaust pipe 12e, and after the combustion exhaust gas is cooled by the cooling device 12f, The combustion exhaust gas is discharged from the exhaust pipe 12e to the outside.
接著，如上方式將在加熱區12經加熱之處理材1依序導引至第1至第3冷卻區13a至13c並使之冷卻，再將如上方式經冷卻之處理材1導引至設有滾輪14a之頂輥室14，再經由滑槽15將該處理材1從頂輥室14導入至出口密封部16，並使前述處理材1經由出口密封部16從該連續退火爐10導出。Next, the processed material 1 heated in the heating zone 12 is sequentially guided to the first to third cooling zones 13a to 13c and cooled, as described above, and the processed material 1 cooled as described above is guided to the inside. The top roll chamber 14 of the roller 14a is introduced into the outlet sealing portion 16 from the top roll chamber 14 via the chute 15, and the processing material 1 is led out from the continuous annealing furnace 10 via the outlet sealing portion 16.
在此，在前述出口密封部16中，亦為了抑制填充於連續退火爐10內之前述環境氣體流出至外部，而使用輥密封件16a。Here, in the outlet sealing portion 16, the roller seal 16a is also used in order to prevent the ambient gas filled in the continuous annealing furnace 10 from flowing out to the outside.
再者，在本實施形態之連續退火爐10中，為了補充從上述入口密封部11或出口密封部16漏出之環境氣體，並且使與處理材1一同導入至連續退火爐10內之氧與包含在環境氣體之氫氣產生反應以充分地進行處理，而設成在將包含氫氣之環境氣體從環境氣體供給裝置20過剩地供給至連續退火爐10內。再者，在該實施形態之連續退火爐10中，在將包含氫氣之環境氣體從環境氣體供給裝置20供給至連續退火爐10內時，雖使前述環境氣體供給至第3冷卻區13c，但供給前述環境氣體之位置並未特別限定。Further, in the continuous annealing furnace 10 of the present embodiment, in order to supplement the ambient gas leaking from the inlet sealing portion 11 or the outlet sealing portion 16, and to introduce the oxygen into the continuous annealing furnace 10 together with the processing material 1, the oxygen is contained. The hydrogen gas in the ambient gas is reacted to be sufficiently treated, and the ambient gas containing hydrogen gas is excessively supplied from the ambient gas supply device 20 to the continuous annealing furnace 10. Further, in the continuous annealing furnace 10 of the embodiment, when the ambient gas containing hydrogen gas is supplied from the ambient gas supply device 20 to the continuous annealing furnace 10, the ambient gas is supplied to the third cooling zone 13c. The position at which the ambient gas is supplied is not particularly limited.
並且，在本實施形態之連續退火爐10中，設置環境氣體控制裝置30，該環境氣體控制裝置30係將過剩之環境氣體從如上所述藉由環境氣體供給裝置20供給有過剩之環境氣體的連續退火爐10內導引至前述加熱區12之燃燒部12d。Further, in the continuous annealing furnace 10 of the present embodiment, the ambient gas control device 30 is provided which supplies the excess ambient gas from the ambient gas supply device 20 to the excess ambient gas as described above. The continuous annealing furnace 10 is guided to the combustion portion 12d of the aforementioned heating zone 12.
在此，在前述環境氣體控制裝置30中，設置用以測量連續退火爐10內之環境氣體之壓力的壓力計31，並使由該壓力計31所測量之連續退火爐10內之環境氣體的壓力輸出至控制手段32。Here, in the aforementioned ambient gas control device 30, a pressure gauge 31 for measuring the pressure of the ambient gas in the continuous annealing furnace 10 is provided, and the ambient gas in the continuous annealing furnace 10 measured by the pressure gauge 31 is provided. The pressure is output to the control means 32.
再者，在該環境氣體控制裝置30中，係在用以將連續退火爐10內之過剩之環境氣體導引至前述加熱區12之燃燒部12d的導引管33，設置第1閥33a及第2閥33b，並且將用以使環境氣體排出至外部之排出管34連接至該第1閥33a及第2閥33b之間的導引管33之部分，且在該排出管34設置第3閥34a，藉由前述控制手段32控制第1閥33a、第2閥33b及第3閥34a。Further, in the ambient gas control device 30, the first valve 33a is provided in the guide pipe 33 for guiding the excess ambient gas in the continuous annealing furnace 10 to the combustion portion 12d of the heating zone 12. The second valve 33b is connected to a portion of the guide pipe 33 between the first valve 33a and the second valve 33b, and a discharge pipe 34 for discharging the ambient gas to the outside, and a third pipe is disposed in the discharge pipe 34. The valve 34a controls the first valve 33a, the second valve 33b, and the third valve 34a by the control means 32.
並且，在燃燒部12d之溫度成為氫氣之著火溫度以上時，為了使由前述壓力計31所測量之連續退火爐10內之環境氣體的壓力成為預定值，藉由前述控制手段32打開前述第1閥33a及第2閥33b，另一方面，關閉前述第3閥34a，經由前述導引管33將連續退火爐10內之過剩的環境氣體導引至加熱區12之燃燒部12d。When the temperature of the combustion portion 12d is equal to or higher than the ignition temperature of the hydrogen gas, the first control unit 32 opens the first one in order to set the pressure of the ambient gas in the continuous annealing furnace 10 measured by the pressure gauge 31 to a predetermined value. On the other hand, the valve 33a and the second valve 33b close the third valve 34a, and the excess ambient gas in the continuous annealing furnace 10 is guided to the combustion portion 12d of the heating zone 12 via the guide pipe 33.
並且，藉由前述燃燒裝置12c使如上方式導入至燃燒部12d之包含於環境氣體之氫氣燃燒，並經由前述排氣管12e與燃燒排氣一同排出至外部。Then, the combustion apparatus 12c introduces the hydrogen gas contained in the ambient gas into the combustion unit 12d as described above, and discharges it to the outside together with the combustion exhaust gas via the exhaust pipe 12e.
若以上述方式進行的話，可防止連續退火爐10內之包含氫氣之環境氣體直接排出至外部，並且將所排出之包含於環境氣體的氫氣有效地利用在加熱區12之燃燒部12d的燃燒。In the above manner, the ambient gas containing hydrogen gas in the continuous annealing furnace 10 can be prevented from being directly discharged to the outside, and the discharged hydrogen contained in the ambient gas can be effectively utilized for combustion in the combustion portion 12d of the heating zone 12.
再者，在未於前述加熱區12之燃燒部12d進行燃燒時等，亦可藉由前述控制手段32打開前述第1閥33a及第3閥34a，另一方面，關閉前述第2閥33b，使前述環境氣體從排出管34排出至外部。Further, when the combustion portion 12d of the heating zone 12 is not being burned, the first valve 33a and the third valve 34a may be opened by the control means 32, and the second valve 33b may be closed. The ambient gas is discharged from the discharge pipe 34 to the outside.
此外，在本實施形態中，在前述加熱區12中對處理材1進行間接加熱時，將該加熱區12作成為雙重管構造，並且在外管12b設置燃燒器等燃燒裝置12c，藉由該燃燒裝置12c在內管12a與外管12b之間的燃燒部12d進行燃燒，但亦可在內管12a之外周側設置作為燃燒部之輻射管爐(未圖示)，並且將包含氫氣之環境氣體導引至此輻射管爐(未圖示)。Further, in the present embodiment, when the treatment material 1 is indirectly heated in the heating zone 12, the heating zone 12 is formed into a double pipe structure, and a combustion device 12c such as a burner is provided in the outer pipe 12b by the combustion. The device 12c performs combustion in the combustion portion 12d between the inner tube 12a and the outer tube 12b, but a radiant tube furnace (not shown) as a combustion portion may be provided on the outer peripheral side of the inner tube 12a, and an ambient gas containing hydrogen gas Guided to this radiant tube furnace (not shown).
再者，在前述實施形態之連續退火爐10中，亦可作成經由前述入口密封部11或出口密封部16將從連續退火爐10內流出至外部的前述環境氣體導引至加熱區12之燃燒部12d，並且在燃燒部12d中使包含於該環境氣體之氫氣燃燒(未圖示)。Further, in the continuous annealing furnace 10 of the above-described embodiment, the ambient gas which flows out from the continuous annealing furnace 10 to the outside through the inlet sealing portion 11 or the outlet sealing portion 16 may be guided to the combustion of the heating zone 12. In the portion 12d, the hydrogen contained in the ambient gas is burned (not shown) in the combustion portion 12d.
1．．．處理材1. . . Processing material
10．．．連續退火爐10. . . Continuous annealing furnace
11．．．入口密封部11. . . Inlet seal
11a、16a．．．輥密封件11a, 16a. . . Roll seal
12．．．加熱區12. . . Heating zone
12a．．．內管12a. . . Inner tube
12b．．．外管12b. . . Outer tube
12c．．．燃燒裝置12c. . . Combustion device
12d．．．燃燒部12d. . . Combustion department
12e．．．排氣管12e. . . exhaust pipe
12f．．．冷卻裝置12f. . . Cooling device
13a至13c．．．第1至第3冷卻區13a to 13c. . . 1st to 3rd cooling zones
14．．．頂輥室14. . . Top roll room
14a．．．滾輪14a. . . Wheel
15．．．滑槽15. . . Chute
16．．．出口密封部16. . . Export seal
20．．．環境氣體供給裝置20. . . Ambient gas supply device
30．．．環境氣體控制裝置30. . . Ambient gas control device
31．．．壓力計31. . . pressure gauge
32．．．控制手段32. . . Control means
33．．．導引管33. . . Guide tube
33a．．．第1閥33a. . . First valve
33b．．．第2閥33b. . . Second valve
34．．．排出管34. . . Drain pipe
34a．．．第3閥34a. . . Third valve
第1圖係顯示習知之連續退火爐之例的概略說明圖。Fig. 1 is a schematic explanatory view showing an example of a conventional continuous annealing furnace.
第2圖係顯示本發明之一實施形態之連續退火爐的概略說明圖。Fig. 2 is a schematic explanatory view showing a continuous annealing furnace according to an embodiment of the present invention.
1．．．處理材1. . . Processing material
10．．．連續退火爐10. . . Continuous annealing furnace
11．．．入口密封部11. . . Inlet seal
11a、16a．．．輥密封件11a, 16a. . . Roll seal
12．．．加熱區12. . . Heating zone
12a．．．內管12a. . . Inner tube
12b．．．外管12b. . . Outer tube
12c．．．燃燒裝置12c. . . Combustion device
12d．．．燃燒部12d. . . Combustion department
12e．．．排氣管12e. . . exhaust pipe
12f．．．冷卻裝置12f. . . Cooling device
13a至13c．．．第1至第3冷卻區13a to 13c. . . 1st to 3rd cooling zones
14．．．頂輥室14. . . Top roll room
14a．．．滾輪14a. . . Wheel
15．．．滑槽15. . . Chute
16．．．出口密封部16. . . Export seal
20．．．環境氣體供給裝置20. . . Ambient gas supply device
30．．．環境氣體控制裝置30. . . Ambient gas control device
31．．．壓力計31. . . pressure gauge
32．．．控制手段32. . . Control means
33．．．導引管33. . . Guide tube
33a．．．第1閥33a. . . First valve
33b．．．第2閥33b. . . Second valve
34．．．排出管34. . . Drain pipe
34a．．．第3閥34a. . . Third valve
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009121593 | 2009-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201042051A TW201042051A (en) | 2010-12-01 |
| TWI473884B true TWI473884B (en) | 2015-02-21 |
Family
ID=43125909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW98120556A TWI473884B (en) | 2009-05-20 | 2009-06-19 | Continuous annealing furnace |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2434026B1 (en) |
| JP (1) | JP4979836B2 (en) |
| CN (1) | CN102203305B (en) |
| ES (1) | ES2747953T3 (en) |
| TW (1) | TWI473884B (en) |
| WO (2) | WO2010134214A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469134B (en) * | 2013-08-14 | 2015-10-21 | 西安赛特思迈钛业有限公司 | Titanium or titanium alloy coils continuous annealer and the method for annealing of a material |
| CN104278141A (en) * | 2014-09-25 | 2015-01-14 | 合肥恒泰钢结构有限公司 | Cold-rolled steel strip continuous reduction annealing furnace |
| MX2018011993A (en) * | 2016-04-05 | 2019-02-07 | Nippon Steel & Sumitomo Metal Corp | Cooling facility in continuous annealing furnace. |
| CN106801138A (en) * | 2017-03-10 | 2017-06-06 | 江苏伟建工具科技有限公司 | A kind of H.S.S. annealing pipe |
| CN106755797A (en) * | 2017-03-10 | 2017-05-31 | 江苏伟建工具科技有限公司 | A kind of high-speed steel convection current cools down annealing pipe |
| JP7184473B1 (en) * | 2021-10-25 | 2022-12-06 | 中外炉工業株式会社 | Continuous annealing furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133707B1 (en) * | 1970-11-09 | 1976-09-21 | ||
| JPS62290830A (en) * | 1986-06-11 | 1987-12-17 | Nisshin Steel Co Ltd | Continuous annealing method for steel strip and annealing furnace therefor |
| JPH03134120A (en) * | 1989-10-20 | 1991-06-07 | Nisshin Steel Co Ltd | Method and apparatus for bright-annealing stainless steel strip |
| CN1112607A (en) * | 1994-03-31 | 1995-11-29 | 中外炉工业株式会社 | A vertical bright annealing furnace for continuous heat treatment of metal strips |
| JPH11229041A (en) * | 1998-02-09 | 1999-08-24 | Daido Steel Co Ltd | Continuous heat treatment furnace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133707A (en) * | 1974-09-14 | 1976-03-23 | Daido Steel Co Ltd | RONAIGASUJUNKANSHIKI SHODONRO |
| JP2520507B2 (en) * | 1990-07-12 | 1996-07-31 | 新日本製鐵株式会社 | Continuous bright annealing method for stainless steel strip |
| JP4156065B2 (en) * | 1998-02-24 | 2008-09-24 | 日新製鋼株式会社 | Continuous reducing atmosphere annealing apparatus and method for metal strip |
-
2009
- 2009-06-12 WO PCT/JP2009/060753 patent/WO2010134214A1/en active Application Filing
- 2009-06-19 TW TW98120556A patent/TWI473884B/en not_active IP Right Cessation
-
2010
- 2010-05-10 JP JP2011514379A patent/JP4979836B2/en active Active
- 2010-05-10 ES ES10777670T patent/ES2747953T3/en active Active
- 2010-05-10 WO PCT/JP2010/057851 patent/WO2010134436A1/en active Application Filing
- 2010-05-10 CN CN2010800031669A patent/CN102203305B/en active Active
- 2010-05-10 EP EP10777670.0A patent/EP2434026B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133707B1 (en) * | 1970-11-09 | 1976-09-21 | ||
| JPS62290830A (en) * | 1986-06-11 | 1987-12-17 | Nisshin Steel Co Ltd | Continuous annealing method for steel strip and annealing furnace therefor |
| JPH03134120A (en) * | 1989-10-20 | 1991-06-07 | Nisshin Steel Co Ltd | Method and apparatus for bright-annealing stainless steel strip |
| CN1112607A (en) * | 1994-03-31 | 1995-11-29 | 中外炉工业株式会社 | A vertical bright annealing furnace for continuous heat treatment of metal strips |
| JPH11229041A (en) * | 1998-02-09 | 1999-08-24 | Daido Steel Co Ltd | Continuous heat treatment furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102203305B (en) | 2013-05-08 |
| JPWO2010134436A1 (en) | 2012-11-08 |
| ES2747953T3 (en) | 2020-03-12 |
| EP2434026A1 (en) | 2012-03-28 |
| WO2010134436A1 (en) | 2010-11-25 |
| TW201042051A (en) | 2010-12-01 |
| JP4979836B2 (en) | 2012-07-18 |
| WO2010134214A1 (en) | 2010-11-25 |
| EP2434026A4 (en) | 2016-09-07 |
| EP2434026B1 (en) | 2019-07-24 |
| CN102203305A (en) | 2011-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI473884B (en) | Continuous annealing furnace | |
| JP5883727B2 (en) | Gas nitriding and gas soft nitriding methods | |
| TW201207153A (en) | Continuous gas carburizing furnace | |
| KR101807344B1 (en) | Method for controlling a protective gas atmosphere in a protective gas chamber for the treatment of a metal strip | |
| FI119940B (en) | Method and tape sintering equipment for continuous sintering and pre-reduction of pelleted mineral material | |
| KR100964904B1 (en) | Heater for annealing furnace | |
| JP2009068070A (en) | Heat treatment method and heat treatment apparatus | |
| JP4956417B2 (en) | Atmospheric heat treatment apparatus and operation method thereof | |
| JP5000116B2 (en) | Soaking furnace operation method in steel strip continuous treatment equipment | |
| WO2021039677A1 (en) | Heat treatment furnace | |
| JPS59205412A (en) | Work piece heat treatment and device | |
| CN115615907A (en) | Method, recording medium and system for accelerated test of ammonia gas corrosion resistance of carbon sleeve | |
| TWI392743B (en) | Continuous metal strip heat treating apparatus | |
| KR101851252B1 (en) | Heat blocking apparatus of outlet plug of vertical annealing furnace | |
| KR100885884B1 (en) | Apparatus for preventing gas intrusion in annealing furnace | |
| JP2004018967A (en) | Heat treatment furnace | |
| JP2009046700A (en) | Heat treatment method and heat treatment facility | |
| JP7184473B1 (en) | Continuous annealing furnace | |
| JPH0463260A (en) | Gas carburizing method | |
| JP7155988B2 (en) | Method for detecting defective combustion of radiant tube burner | |
| CN212159535U (en) | Atmosphere detection device in steel pipe bright annealing furnace | |
| JPH11335744A (en) | Continuous heat treatment furnace and method for controlling atmosphere in continuous heat treatment furnace and cooling method thereof | |
| JP4752526B2 (en) | Continuous heating furnace and control method thereof | |
| JP5398685B2 (en) | Combustion control method of regenerative burner in heating furnace | |
| JP4064253B2 (en) | Steel strip continuous heat treatment equipment and combustion method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |