JPH02236229A - Method for controlling atmospheric gas in continuous bright annealing furnace for stainless steel strip - Google Patents
Method for controlling atmospheric gas in continuous bright annealing furnace for stainless steel stripInfo
- Publication number
- JPH02236229A JPH02236229A JP5376789A JP5376789A JPH02236229A JP H02236229 A JPH02236229 A JP H02236229A JP 5376789 A JP5376789 A JP 5376789A JP 5376789 A JP5376789 A JP 5376789A JP H02236229 A JPH02236229 A JP H02236229A
- Authority
- JP
- Japan
- Prior art keywords
- zone
- atmospheric gas
- stainless steel
- bright annealing
- steel strip
- 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.)
- Granted
Links
- 238000000137 annealing Methods 0.000 title claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 16
- 239000010935 stainless steel Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 235000002492 Rungia klossii Nutrition 0.000 description 1
- 244000117054 Rungia klossii Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
く産業上の利川分野〉
本発明は、ステンレス鋼帯の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１′
ｎ方法に関するものである．く従来の技術〉
従来、第２図のように冷６；１圧延されたステンレスｍ
ｗｉは、クリーニングゾーン３，力１１熱帯４，均熱帯
５，冷却−！ｔＦ ６に分けられた連続光輝焼鈍炉２の
中を通機されて、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により吸引され脱酸器
８，ドライヤー９を経て再度炉に供給されるが、流■は
一定であり、各ゾーン毎の露点＠１ｎはなされていなか
った．そのため、耐請性の向上には改善の余地が残され
ていた．く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ｒｉ焼鈍時の雰囲気ガスの制１ｎ方法
を提（ｌすることを目的とする．く課題を解決するため
の手段〉
本発明は、ステンレス鋼帯を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帯，均熱帯．冷却帯の
各ゾーンの雰囲気ガスの露点を露点計で検出して、前記
各ゾーンの設定露点と比較して、雰囲気ガスの全体流量
を制１ｎすると共に、前記各ゾーンへの雰囲気ガスの流
■を制御するものである．
く作用〉
本発明によれば、各ゾーン毎のｎ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１
１Ｉずるので、ステンレス鋼帯の耐錆性を改善すること
が出来る．
〈実施例〉
本発明の一実施例を凹面に基づいて説明する．第１図は
本発明の雰囲気ガス制ｊｎ方法を適用する装置の一実施
例を示す説明図である．
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
に分けられた連続光輝焼鈍炉２の中を通仮されて、ＡＸ
ガス等の雰囲気ガスで光詠焼鈍される．雰囲気ガスはブ
ースター７により吸引され脱酸器８．ドライヤー９を経
て再度炉に供給される．
本発明においては、加熱帯４．均熱帯５．冷却４ｆｆｓ
における雰囲気ガスの露点を雰囲気ガスの供めに、加熱
帯４，均熱帯５．冷却帯６の各ゾーンのｎ点を露点計１
１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ｌＯの開度を制１
ｎすることによって各ゾーンの露点分布を適正範囲にす
るように槽成されている．図中１４は雰囲気ガス循環■
制１１Ｉ信号、１５はダンバー開度制御信号である．次
に、本発明の具体的な実施例について説明する．
実施例ｌ
ＳＵＳ４３０のステンレスＭ帯について、木発明の方法
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、雰囲気ガスとして八Ｘガスを使用し、そ
の全体流量は３００＋ｒ？／ｈｒであった．
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．
第１表
第２表
注）耐錆性はｌｄｎｒ当りの発錆個数で３ｆ価した．実
施例２
同じ＜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．
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．
注》紺剤１はＩｄｎｆ当りの発錆個数で評価した．〈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
の連続光躇焼鈍炉において、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請性を改善ずる
ことができる．[Detailed description of the invention] Industrial field in Icheon> The present invention relates to a heating zone of a continuous bright annealing furnace for stainless steel strip.
Control of the dew point of atmospheric gas in each zone of soaking zone and cooling zone1'
This is related to the n method. Conventional technology> Conventionally, as shown in Fig. 2, cold rolled stainless steel m
Wi is cleaning zone 3, power 11 tropical 4, soaking zone 5, cooling-! It is passed through a continuous bright annealing furnace 2 divided into tF 6 and brightly annealed in an atmospheric gas such as AX gas. Atmospheric gas was sucked by the booster 7 and supplied to the furnace again through the deoxidizer 8 and the dryer 9, but the flow was constant and the dew point @1n was not determined for each zone. Therefore, there was still room for improvement in improving the durability. Problems to be Solved by the Invention The present invention was proposed to solve the above-mentioned conventional problems, and in order to improve the rust resistance of cold-rolled stainless steel strip, The present invention provides a method for controlling the atmospheric gas in a continuous bright annealing furnace when brightly annealing a stainless steel strip in a continuous bright annealing furnace. The dew point of the atmospheric gas in each zone of the heating zone, soaking zone, and cooling zone is detected with a dew point meter, and compared with the set dew point of each zone, the overall flow rate of the atmospheric gas is controlled. According to the present invention, n points in each zone are detected, compared with the set value of each zone, and the dew point of each zone is adjusted to an appropriate range. Control 1
1I, it is possible to improve the rust resistance of stainless steel strips. <Example> An example of the present invention will be explained based on a concave surface. FIG. 1 is an explanatory diagram showing an embodiment of a device to which the atmospheric gas control method of the present invention is applied. In FIG. 1, a cold-rolled stainless steel strip 1 is
Cleaning zone 3, heating zone 4. Soaking zone 5, cooling zone 6
It passes through the continuous bright annealing furnace 2 divided into
Light annealing is performed in an atmospheric gas such as gas. Atmospheric gas is sucked by the booster 7 and deoxidized by the deoxidizer 8. It is supplied to the furnace again through dryer 9. In the present invention, heating zone 4. Soaking zone 5. cooling 4ffs
The dew point of the atmospheric gas in the heating zone 4, the soaking zone 5. Dew point meter 1 measures the n point of each zone of cooling zone 6.
1 and controls the dew point within an appropriate range using the dew point detection signal 13.The control device 12 controls the overall amount of atmospheric gas in the booster 7, and controls the amount of atmospheric gas circulated to each zone by the damper lO. Control the opening degree of
The tank is configured so that the dew point distribution in each zone is within the appropriate range by adjusting the temperature. 14 in the figure is atmospheric gas circulation ■
Control signal 11I, 15 is a damper opening control signal. Next, specific examples of the present invention will be described. Example 1 Table 1 shows a comparison of the results obtained by implementing the method of the Moku invention on a stainless steel M band made of SUS430 and the results obtained by the conventional method. In addition, 8X gas is used as the atmospheric gas, and its total flow rate is 300+r? /hr. From Table 1, it can be seen that the rust resistance was significantly improved by the present invention. Table 1 Table 2 Note) Rust resistance was determined by the number of rusted particles per ldnr. Example 2 The same SUS304 stainless steel strip was annealed under the atmospheric conditions in each zone as shown in Table 2. From Table 2, it can be seen that the rust resistance was significantly improved by the present invention. Note: Dark blue agent 1 was evaluated based on the number of rust spots per Idnf. <Effects of the Invention> As explained above, according to the present invention, the dew point of each zone is controlled within an appropriate range in a continuous photogalvanic annealing furnace for stainless steel strips, thereby improving the durability of the stainless steel strips. You can cheat.
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．
ｌ・・・鋼イＩＦ、 ２・・・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・・・ダンバーｌ１・・・露点計、
１２・・・制１ｎ装置、ｌ３・・・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 diagram showing one embodiment of an apparatus to which the method of the present invention is applied, and FIG. 2 is an explanatory diagram of a conventional atmospheric gas control method. l... Steel IF, 2... Bright annealing furnace,
3...Cleaning zone, 4...Heating zone, 5...
・Soaking zone, 6... Cooling zone, 7... Booster 8... Deoxidizer, 9... Dryer
10...Dunbar l1...Dew point meter,
12... Control 1n device, l3... Dew point detection signal, 14... Atmospheric gas circulation amount control signal, 15... Damper opening control signal.
Claims (1)
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露点計で検出して、前記各ゾーンの
設定露点と比較して、雰囲気ガスの全体流量を制御する
と共に、前記各ゾーンへの雰囲気ガスの流量を制御する
ことを特徴とするステンレス鋼帯の連続光輝焼鈍炉にお
ける雰囲気ガスの制御方法。When bright annealing stainless steel strip in a continuous bright annealing furnace,
Detecting the dew point of the atmospheric gas in each zone of the heating zone, soaking zone, and cooling zone of the continuous bright annealing furnace with a dew point meter and comparing it with the set dew point of each zone to control the overall flow rate of the atmospheric gas, A method for controlling atmospheric gas in a continuous bright annealing furnace for stainless steel strip, comprising controlling the flow rate of atmospheric gas to each zone.
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 true JPH02236229A (en) | 1990-09-19 |
| JP2670134B2 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) |
Cited By (12)
| 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 |
| WO2013153790A1 (en) * | 2012-04-09 | 2013-10-17 | Ｊｆｅスチール株式会社 | Device and method for reducing dew point of ambient gas in annealing furnace, and method for producing cold-rolled annealed steel plate |
| WO2013153791A1 (en) * | 2012-04-09 | 2013-10-17 | Ｊｆｅスチール株式会社 | Method for lowering dew point of ambient gas within annealing furnace, device thereof, and method for producing cold-rolled annealed steel sheet |
| CN104342535A (en) * | 2013-07-29 | 2015-02-11 | 宝山钢铁股份有限公司 | Method and apparatus for cooling multi-atmosphere segment continuous annealing furnace |
| CN104379777A (en) * | 2012-06-13 | 2015-02-25 | 杰富意钢铁株式会社 | Method of continuous annealing of steel strip, and method of manufacturing hot-dip galvanized steel strip |
| EP2942407A1 (en) * | 2013-01-28 | 2015-11-11 | JFE Steel Corporation | Method for adjusting in-furnace atmosphere of continuous heat-treating furnace |
| CN105671301A (en) * | 2012-01-17 | 2016-06-15 | 杰富意钢铁株式会社 | Steel strip continuous annealing furnace and continuous annealing method |
| CN105705663A (en) * | 2013-11-07 | 2016-06-22 | 杰富意钢铁株式会社 | Continuous annealing equipment and continuous annealing method |
| JP2016160489A (en) * | 2015-03-02 | 2016-09-05 | 新日鐵住金株式会社 | Austenitic stainless steel sheet and manufacturing method thereof |
| CN107236852A (en) * | 2016-03-29 | 2017-10-10 | 宝山钢铁股份有限公司 | Orientation silicon steel decarburization annealing furnace furnace gas moves towards the monitoring method with distribution condition |
| WO2020128598A1 (en) * | 2018-12-21 | 2020-06-25 | Arcelormittal | Steel strip annealing furnace with humidity control device |
| CN114672622A (en) * | 2022-04-13 | 2022-06-28 | 浙江康士达科技股份有限公司 | Bright annealing device for stainless steel band |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5713126A (en) * | 1980-06-23 | 1982-01-23 | Nippon Steel Corp | Control device for activity of steel plate surface in continuous annealing |
| JPH0240731A (en) * | 1988-07-29 | 1990-02-09 | Kyocera Corp | Personal computer diagnostic equipment |
-
1989
- 1989-03-08 JP JP1053767A patent/JP2670134B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5713126A (en) * | 1980-06-23 | 1982-01-23 | Nippon Steel Corp | Control device for activity of steel plate surface in continuous annealing |
| JPH0240731A (en) * | 1988-07-29 | 1990-02-09 | Kyocera Corp | Personal computer diagnostic equipment |
Cited By (25)
| 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 |
| CN105671301A (en) * | 2012-01-17 | 2016-06-15 | 杰富意钢铁株式会社 | Steel strip continuous annealing furnace and continuous annealing method |
| CN105671301B (en) * | 2012-01-17 | 2018-01-09 | 杰富意钢铁株式会社 | The continuous annealing furnace and continuous annealing method of steel band |
| CN104245972A (en) * | 2012-04-09 | 2014-12-24 | 杰富意钢铁株式会社 | Method for lowering dew point of ambient gas within annealing furnace, device thereof, and method for producing cold-rolled annealed steel sheet |
| US9657366B2 (en) | 2012-04-09 | 2017-05-23 | Jfe Steel Corporation | Method of reducing dew point of atmosphere gas in annealing furnace, apparatus for the same and method of producing cold-rolled and annealed steel sheet |
| 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 |
| EP2837699A4 (en) * | 2012-04-09 | 2015-11-11 | Jfe Steel Corp | Device and method for reducing dew point of ambient gas in annealing furnace, and method for producing cold-rolled annealed steel plate |
| JPWO2013153790A1 (en) * | 2012-04-09 | 2015-12-17 | Ｊｆｅスチール株式会社 | Method for reducing dew point of atmospheric gas in annealing furnace, apparatus therefor, and method for producing cold-rolled annealed steel sheet |
| WO2013153790A1 (en) * | 2012-04-09 | 2013-10-17 | Ｊｆｅスチール株式会社 | Device and method for reducing dew point of ambient gas in annealing furnace, and method for producing cold-rolled annealed steel plate |
| CN104220610A (en) * | 2012-04-09 | 2014-12-17 | 杰富意钢铁株式会社 | Device and method for reducing dew point of ambient gas in annealing furnace, and method for producing cold-rolled annealed steel plate |
| WO2013153791A1 (en) * | 2012-04-09 | 2013-10-17 | Ｊｆｅスチール株式会社 | Method for lowering dew point of ambient gas within annealing furnace, device thereof, and method for producing cold-rolled annealed steel sheet |
| CN104379777A (en) * | 2012-06-13 | 2015-02-25 | 杰富意钢铁株式会社 | Method of continuous annealing of steel strip, and method of manufacturing hot-dip galvanized steel strip |
| CN104379777B (en) * | 2012-06-13 | 2017-10-10 | 杰富意钢铁株式会社 | The continuous annealing method of steel band and the manufacture method of hot-galvanized steel band |
| US10106867B2 (en) | 2012-06-13 | 2018-10-23 | Jfe Steel Corporation | Method for continuously annealing steel strip and method for manufacturing galvanized steel strip |
| EP2942407A1 (en) * | 2013-01-28 | 2015-11-11 | JFE Steel Corporation | Method for adjusting in-furnace atmosphere of continuous heat-treating furnace |
| EP2942407A4 (en) * | 2013-01-28 | 2016-01-27 | Jfe Steel Corp | METHOD OF REGULATING THE ATMOSPHERE INSIDE THE OVEN IN A CONTINUOUS THERMAL PROCESSING OVEN |
| CN104342535A (en) * | 2013-07-29 | 2015-02-11 | 宝山钢铁股份有限公司 | Method and apparatus for cooling multi-atmosphere segment continuous annealing furnace |
| CN105705663A (en) * | 2013-11-07 | 2016-06-22 | 杰富意钢铁株式会社 | Continuous annealing equipment and continuous annealing method |
| CN105705663B (en) * | 2013-11-07 | 2017-08-04 | 杰富意钢铁株式会社 | Continuous annealing equipment and continuous annealing method |
| US10415115B2 (en) | 2013-11-07 | 2019-09-17 | Jfe Steel Corporation | Continuous annealing system and continuous annealing method |
| JP2016160489A (en) * | 2015-03-02 | 2016-09-05 | 新日鐵住金株式会社 | Austenitic stainless steel sheet and manufacturing method thereof |
| CN107236852A (en) * | 2016-03-29 | 2017-10-10 | 宝山钢铁股份有限公司 | Orientation silicon steel decarburization annealing furnace furnace gas moves towards the monitoring method with distribution condition |
| WO2020128598A1 (en) * | 2018-12-21 | 2020-06-25 | Arcelormittal | Steel strip annealing furnace with humidity control device |
| US11827951B2 (en) | 2018-12-21 | 2023-11-28 | Arcelormittal | Steelmaking furnace with humidity control device |
| CN114672622A (en) * | 2022-04-13 | 2022-06-28 | 浙江康士达科技股份有限公司 | Bright annealing device for stainless steel band |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2670134B2 (en) | 1997-10-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |