JP2670134B2 - Atmosphere gas control method in vertical continuous bright annealing furnace for stainless steel strip - Google Patents
Atmosphere gas control method in vertical continuous bright annealing furnace for stainless steel stripInfo
- Publication number
- JP2670134B2 JP2670134B2 JP1053767A JP5376789A JP2670134B2 JP 2670134 B2 JP2670134 B2 JP 2670134B2 JP 1053767 A JP1053767 A JP 1053767A JP 5376789 A JP5376789 A JP 5376789A JP 2670134 B2 JP2670134 B2 JP 2670134B2
- Authority
- JP
- Japan
- Prior art keywords
- zone
- stainless steel
- steel strip
- annealing furnace
- dew point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、ステンレス鋼帯の竪型連続光輝焼鈍炉の加
熱帯，均熱帯，冷却帯の各ゾーンの雰囲気ガスの露点の
制御方法に関するものである。The present invention relates to a method for controlling the dew point of atmospheric gas in the heating zone, soaking zone, and cooling zone of a vertical continuous bright annealing furnace for stainless steel strips. It is.
＜従来の技術＞ 従来、第２図のように冷間圧延されたステンレス鋼帯
１は、クリーニングゾーン3,加熱帯4,均熱帯5,冷却帯６
に分けられた連続光輝焼鈍炉２の中を通板されて、AXガ
ス等の雰囲気ガスで光輝焼鈍される。雰囲気ガスはブー
スター７により吸引されて脱酸器8,ドライヤー９を経て
再度炉に供給されるが、流量は一定であり、各ゾーン毎
の露点制御はなされていなかった。そのため、耐錆性の
向上には改善の余地が残されていた。<Prior Art> Conventionally, the cold rolled stainless steel strip 1 as shown in FIG. 2 has a cleaning zone 3, a heating zone 4, a soaking zone 5, and a cooling zone 6.
It is passed through the continuous bright annealing furnace 2 divided into and is bright annealed with an atmosphere gas such as AX gas. The atmosphere gas was sucked by the booster 7, passed through the deoxidizer 8 and the dryer 9, and then supplied to the furnace again, but the flow rate was constant, and dew point control was not performed for each zone. Therefore, there is still room for improvement in improving rust resistance.
＜発明が解決しようとする課題＞ 本発明は、以上のような従来の問題を解決するため提
案されたもので、ステンレス冷延鋼帯の耐錆性の改善を
はかるため、連続光輝焼鈍時の雰囲気ガスの制御方法を
提供することを目的とする。<Problems to be Solved by the Invention> The present invention has been proposed in order to solve the conventional problems as described above, and in order to improve the rust resistance of a stainless cold-rolled steel strip, it is possible to perform continuous bright annealing. An object is to provide a method of controlling an atmospheric gas.
＜課題を解決するための手段＞ 本発明は、ステンレス鋼帯を竪型連続光輝焼鈍炉で光
輝焼鈍する際に、連続光輝焼鈍炉の加熱時，均熱帯，冷
却帯の各ゾーンの雰囲気ガスの露点をそれぞれ露点計で
検出して、前記各ゾーンの設定露点と比較して、検出露
点が設定露点に一致するように前記各ゾーンへの雰囲気
ガスの流量を個別に制御すると共に、雰囲気ガスの全体
流量を前記個別制御値の合計値に制御するものである。<Means for Solving the Problems> The present invention, when the stainless steel strip is bright annealed in a vertical continuous bright annealing furnace, at the time of heating of the continuous bright annealing furnace, the atmospheric gas in each zone of the soaking zone and the cooling zone is controlled. Each dew point is detected by a dew point meter, compared with the set dew point of each zone, and the flow rate of the atmospheric gas to each zone is individually controlled so that the detected dew point matches the set dew point. The total flow rate is controlled to the total value of the individual control values.
＜作用＞ 本発明によれば、各ゾーン毎の露点を検出し、各ゾー
ンの設定値と比較し、各ゾーンの露点を適正な範囲に制
御するもので、ステンレス鋼帯の耐錆性を改善すること
が出来る。<Operation> According to the present invention, the dew point of each zone is detected and compared with the set value of each zone to control the dew point of each zone within an appropriate range, thereby improving the rust resistance of the stainless steel strip. You can do it.
＜実施例＞ 本発明の一実施例を図面に基づいて説明する。第１図
は本発明の雰囲気ガス制御方法を適用する装置の一実施
例を示す説明図である。<Example> An example of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of an apparatus to which the atmospheric gas control method of the present invention is applied.
第１図において、冷間圧延されたステンレス鋼帯１
は、クリーニングゾーン3,加熱帯4,均熱帯5,冷却帯６に
分けられた竪型連続光輝焼鈍炉２の中を通板されて、AX
ガス等の雰囲気ガスで光輝焼鈍される。雰囲気ガスはブ
ースター７により吸引されて脱酸器8,ドライヤー９を経
て再度炉に供給される。In FIG. 1, cold rolled stainless steel strip 1
Is passed through the vertical continuous bright annealing furnace 2 divided into the cleaning zone 3, the heating zone 4, the soaking zone 5, and the cooling zone 6, and AX
Bright annealing is performed with an atmospheric gas such as gas. The atmospheric gas is sucked by the booster 7, passed through the deoxidizer 8 and the dryer 9, and then supplied to the furnace again.
本発明においては、加熱帯4,均熱帯5,冷却帯６の各ゾ
ーンの露点を露点計11によって検出し、その露点検出信
号13により露点の適正範囲内に制御する制御装置12によ
り、ブースター７の雰囲気ガス量の全体量を制御すると
ともに、各ゾーンへの雰囲気ガスの循環量をダンパー10
の開度を制御することによって各ゾーンの露点分布を適
正範囲にするように構成されている。図中14は雰囲気ガ
ス循環量制御信号、15はダンパー開度制御信号である。In the present invention, the dew point of each zone of the heating zone 4, the soaking zone 5, and the cooling zone 6 is detected by the dew point meter 11, and the dew point detection signal 13 is used to control the dew point to within the proper range of the dew point. The total amount of atmospheric gas in the
The dew point distribution of each zone is controlled within an appropriate range by controlling the opening degree of the. In the figure, 14 is an atmosphere gas circulation amount control signal, and 15 is a damper opening control signal.
次に、本発明の具体的な実施例について説明する。 Next, specific examples of the present invention will be described.
実施例１ SUA430のステンレス鋼帯について、本発明の方法を実
施した結果を従来法による結果と比較して第１表に示し
た。なお、雰囲気ガスとしてAXガスを使用し、その全体
流量は300m3/hrであった。Example 1 The results of carrying out the method of the present invention on the stainless steel strip of SUA430 are shown in Table 1 in comparison with the results of the conventional method. AX gas was used as the atmosphere gas, and the total flow rate was 300 m 3 / hr.
第１表から、本発明により耐錆性が大幅に改善された
ことが分かる。It can be seen from Table 1 that the rust resistance is significantly improved by the present invention.
実施例２ 同じくSUS304のステンレス鋼帯について、第２表のよ
うな各ゾーンの雰囲気条件で焼鈍を行った。 Example 2 Similarly, a SUS304 stainless steel strip was annealed under the atmospheric conditions of each zone as shown in Table 2.
第２表から、本発明により耐錆性が大幅に改善された
ことが分かる。It can be seen from Table 2 that the rust resistance is significantly improved by the present invention.
＜発明の効果＞ 以上説明したように、本発明によれば、ステンレス鋼
帯の竪型連続光輝焼鈍炉において、各ゾーンの露点を適
正な範囲に制御するので、ステンレス鋼帯の耐錆性を改
善することができる。 <Effects of the Invention> As described above, according to the present invention, in the vertical continuous bright annealing furnace for a stainless steel strip, the dew point of each zone is controlled within an appropriate range, so that the rust resistance of the stainless steel strip can be improved. Can be improved.
第１図は、本発明の方法を適用する装置の一実施例を示
す説明図、第２図は従来の雰囲気ガスの制御方法の説明
図である。 １……ステンレス鋼帯、２……竪型連続光輝焼鈍炉、 ３……クリーニングゾーン、４……加熱帯、 ５……均熱帯、６……冷却帯、 ７……ブースター、８……脱酸器、 ９……ドライヤー、10……ダンパー、 11……露点計、12……制御装置、 13……露点検出信号、 14……雰囲気ガス循環量制御信号、 15……ダンパー開度制御信号。FIG. 1 is an explanatory view showing an embodiment of an apparatus to which the method of the present invention is applied, and FIG. 2 is an explanatory view of a conventional atmospheric gas control method. 1 ... stainless steel strip, 2 ... vertical continuous bright annealing furnace, 3 ... cleaning zone, 4 ... heating zone, 5 ... uniform tropical zone, 6 ... cooling zone, 7 ... booster, 8 ... removal Acid unit, 9 ... Dryer, 10 ... Damper, 11 ... Dew point meter, 12 ... Control device, 13 ... Dew point detection signal, 14 ... Atmospheric gas circulation amount control signal, 15 ... Damper opening control signal .
Claims (1)
輝焼鈍する際に、連続光輝焼鈍炉の加熱帯，均熱帯，冷
却帯の各ゾーンの雰囲気ガスの露点をそれぞれ露点計で
検出して、前記各ゾーンの設定露点と比較して、検出露
点が設定露点に一致するように前記各ゾーンへの雰囲気
ガスの流量を個別に制御すると共に、雰囲気ガスの全体
流量を前記個別制御値の合計値に制御することを特徴と
するステンレス鋼帯の堅型連続光輝焼鈍炉における雰囲
気ガス制御方法。1. When a stainless steel strip is bright annealed in a vertical continuous bright annealing furnace, the dew points of atmospheric gases in the heating zone, soaking zone and cooling zone of the continuous bright annealing furnace are detected by dew point meters. Then, as compared with the set dew point of each zone, the flow rate of the atmospheric gas to each zone is individually controlled so that the detected dew point matches the set dew point, and the total flow rate of the atmospheric gas is set to the individual control value. A method for controlling an atmospheric gas in a rigid continuous bright annealing furnace for a stainless steel strip, characterized by controlling the total value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1053767A JP2670134B2 (en) | 1989-03-08 | 1989-03-08 | Atmosphere gas control method in vertical continuous bright annealing furnace for stainless steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1053767A JP2670134B2 (en) | 1989-03-08 | 1989-03-08 | Atmosphere gas control method in vertical continuous bright annealing furnace for stainless steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02236229A JPH02236229A (en) | 1990-09-19 |
| JP2670134B2 true JP2670134B2 (en) | 1997-10-29 |
Family
ID=12951962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1053767A Expired - Fee Related JP2670134B2 (en) | 1989-03-08 | 1989-03-08 | Atmosphere gas control method in vertical continuous bright annealing furnace for stainless steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2670134B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100517647B1 (en) * | 2000-06-29 | 2005-09-29 | 주식회사 포스코 | An automatic analyzing apparatus of dewpoint in continuous annealing furnace |
| JP5505430B2 (en) * | 2012-01-17 | 2014-05-28 | Ｊｆｅスチール株式会社 | Continuous annealing furnace and continuous annealing method for steel strip |
| CN104245972B (en) * | 2012-04-09 | 2016-03-16 | 杰富意钢铁株式会社 | The manufacture method of the dew point reduction method of atmosphere gas, its device and cold rolled annealed steel plate in annealing furnace |
| CN104220610B (en) * | 2012-04-09 | 2017-08-08 | 杰富意钢铁株式会社 | The manufacture method of the dew point reduction method of atmosphere gas, its device and cold rolled annealed steel plate in annealing furnace |
| WO2013187042A1 (en) | 2012-06-13 | 2013-12-19 | Ｊｆｅスチール株式会社 | Method of continuous annealing of steel strip, and method of manufacturing hot-dip galvanized steel strip |
| WO2014115190A1 (en) * | 2013-01-28 | 2014-07-31 | Ｊｆｅスチール株式会社 | Method for adjusting in-furnace atmosphere of continuous heat-treating furnace |
| CN104342535B (en) * | 2013-07-29 | 2016-10-05 | 宝山钢铁股份有限公司 | The cool-down method of a kind of many atmosphere section annealing furnace and device thereof |
| US10415115B2 (en) | 2013-11-07 | 2019-09-17 | Jfe Steel Corporation | Continuous annealing system and continuous annealing method |
| JP6543962B2 (en) * | 2015-03-02 | 2019-07-17 | 日本製鉄株式会社 | Austenitic stainless steel sheet and method of manufacturing the same |
| CN107236852B (en) * | 2016-03-29 | 2018-10-02 | 宝山钢铁股份有限公司 | Orientation silicon steel decarburization annealing furnace furnace gas moves towards and the monitoring method of distribution condition |
| EP3899069A1 (en) * | 2018-12-21 | 2021-10-27 | ArcelorMittal | Steel strip annealing furnace with humidity control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033173B2 (en) * | 1980-06-23 | 1985-08-01 | 新日本製鐵株式会社 | Steel plate surface activity control device during continuous annealing |
| JPH0240731A (en) * | 1988-07-29 | 1990-02-09 | Kyocera Corp | Diagnostic device for personal computer |
-
1989
- 1989-03-08 JP JP1053767A patent/JP2670134B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02236229A (en) | 1990-09-19 |
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Legal Events
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| LAPS | Cancellation because of no payment of annual fees |