JPH05271781A - Manufacture of stainless pretreated steel strip for cold rolling and apparatus therefor - Google Patents
Manufacture of stainless pretreated steel strip for cold rolling and apparatus thereforInfo
- Publication number
- JPH05271781A JPH05271781A JP10245192A JP10245192A JPH05271781A JP H05271781 A JPH05271781 A JP H05271781A JP 10245192 A JP10245192 A JP 10245192A JP 10245192 A JP10245192 A JP 10245192A JP H05271781 A JPH05271781 A JP H05271781A
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- Prior art keywords
- steel strip
- stainless
- cold
- cold rolling
- rolling
- 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.)
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- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、優れた表面光沢を有す
るオーステナイト系ステンレス冷延鋼帯を有利に生産し
得る冷間圧延用ステンレス予備処理鋼帯の製造方法及び
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a stainless pretreated steel strip for cold rolling which can advantageously produce an austenitic stainless cold rolled steel strip having an excellent surface gloss.
【０００２】[0002]
【従来の技術】従来、ステンレス冷延鋼帯は、熱延鋼帯
を焼鈍し酸洗した後、ワークロール径φ150mm 以下のゼ
ンジミアミル等において冷間圧延を施し、仕上焼鈍酸洗
又は仕上光輝焼鈍し、更に仕上調質圧延することにて製
造されている。この従来技術によって製造されるステン
レス冷延鋼帯は、SUS304に代表されるオーステナイト系
の場合、仕上調質圧延後にバフ研磨を施す場合が多く、
このバフ研磨後に優れた光沢を呈することが重要であ
る。2. Description of the Related Art Conventionally, cold-rolled stainless steel strips are annealed from hot-rolled steel strips and pickled, and then cold-rolled in a Sendzimir mill with a work roll diameter of φ150 mm or less, finish annealing pickling or finish bright annealing It is manufactured by further finishing temper rolling. Stainless steel cold-rolled steel strip produced by this conventional technique is often austenite typified by SUS304, and is often subjected to buff polishing after finish temper rolling,
It is important to exhibit excellent gloss after this buffing.
【０００３】また、他の従来技術として、圧延時間を大
幅に短縮して能率良くステンレス冷延鋼帯を製造するた
めに、φ150mm 以上の大径ワークロールで冷間圧延する
方法も採られている。Further, as another conventional technique, a method of cold rolling with a work roll having a large diameter of φ150 mm or more is adopted in order to significantly reduce the rolling time and efficiently produce a cold rolled stainless steel strip. .
【０００４】[0004]
【発明が解決しようとする課題】然しながら、従来技術
では、SUS304を代表とするオーステナイト系ステンレス
鋼板において、冷間タンデムミル等の大径ワークロール
で冷間圧延する場合、又は小径ワークロールで冷間圧延
する場合、又はこれらを組合わせた場合のいずれにあっ
ても、製品の表面光沢が低下する問題を常に抱えてい
る。However, in the prior art, in the austenitic stainless steel sheet represented by SUS304, when cold rolling with a large diameter work roll such as a cold tandem mill, or with a small diameter work roll. Regardless of whether it is rolled or a combination thereof, there is always a problem that the surface gloss of the product is lowered.
【０００５】特に、φ150mm 以上の大径ワークロールを
用いて冷間圧延する方法では、小径ワークロールを用い
る場合に比して、製品の表面光沢が著しく低下し、光沢
を要求される用途には全く適用できない。Particularly, in the method of cold rolling using a work roll having a large diameter of φ150 mm or more, the surface gloss of the product is remarkably reduced as compared with the case where a work roll having a small diameter is used. Not applicable at all.
【０００６】本発明は、ステンレス鋼帯において、冷間
タンデムミル等の大径ワークロールで冷間圧延する場
合、又は、小径ワークロールで冷間圧延する場合、又
は、これらを組合わせた場合のいずれにおいても、優れ
た表面光沢を有するステンレス冷延鋼帯を製造すること
ができる、冷間圧延用のステンレス予備処理鋼帯を提供
することを目的とする。The present invention relates to a case where a stainless steel strip is cold-rolled with a large-diameter work roll such as a cold tandem mill, cold-rolled with a small-diameter work roll, or a combination thereof. In any case, it is an object of the present invention to provide a stainless pre-treated steel strip for cold rolling, which can produce a stainless cold-rolled steel strip having excellent surface gloss.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の冷間圧
延用ステンレス予備処理鋼帯の製造方法は、熱間圧延終
了後のステンレス鋼帯を焼鈍し、これに連続して該鋼帯
を焼鈍直後から25℃／秒以上の冷却速度で急冷するよう
にしたものである。A method of manufacturing a stainless steel pre-treated steel strip for cold rolling according to claim 1, wherein the stainless steel strip after hot rolling is annealed, and the steel strip is continuously formed. Immediately after annealing, the material was rapidly cooled at a cooling rate of 25 ° C / sec or more.
【０００８】請求項２に記載の冷間圧延用ステンレス予
備処理鋼帯の製造方法は、熱間圧延終了後のステンレス
鋼帯を焼鈍し、これに連続して該鋼帯を焼鈍直後から該
鋼帯温度が 850℃〜 400℃の範囲にて25℃／秒以上の冷
却速度で急冷するようにしたものである。According to a second aspect of the present invention, there is provided a method for producing a pre-treated stainless steel strip for cold rolling, wherein the stainless steel strip after hot rolling is annealed, and the steel strip is continuously annealed immediately after the annealing. It is designed to quench rapidly at a cooling rate of 25 ° C / sec or more in the zone temperature range of 850 ° C to 400 ° C.
【０００９】請求項３に記載の冷間圧延用ステンレス予
備処理鋼帯の製造装置は、ステンレス熱延鋼帯のための
焼鈍装置と、該焼鈍装置に直結して鋼帯を急冷するため
の急冷装置と、該急冷装置の出側に設置される酸洗装置
とからなるようにしたものである。An apparatus for producing a stainless pretreated steel strip for cold rolling according to a third aspect of the present invention is an annealing apparatus for a hot rolled stainless steel strip and a quenching apparatus for directly cooling the annealing apparatus by directly connecting the annealing apparatus. It is composed of an apparatus and a pickling apparatus installed on the outlet side of the quenching apparatus.
【００１０】[0010]
【作用】SUS304を代表とするオーステナイト系ステンレ
ス鋼板において、冷間タンデムミル等の大径ワークロー
ルで冷間圧延する場合、又は、小径ワークロールで冷間
圧延する場合、又は、これらを組合わせた場合のいずれ
においても、従来から表面光沢が低下する問題を常に抱
えていた。[Operation] In an austenitic stainless steel sheet typified by SUS304, when cold rolling with a large diameter work roll such as a cold tandem mill or when cold rolling with a small diameter work roll, or a combination thereof In any of the cases, there has always been a problem that the surface gloss decreases.
【００１１】そこで、本発明者らは、光沢阻害原因を鋭
意調査した結果、製品鋼帯の表面に網目状のミクロな欠
陥が残存し、これが原因で表面光沢を低下させているこ
とを把握した。然も、この網目状欠陥は、製品の表面性
状を左右する冷間圧延後の鋼帯の表面にも残存すること
が判明し、更に、この冷延後の鋼帯表面に残存する網目
状欠陥は、冷間圧延の前の鋼帯、即ち、熱間圧延した後
に焼鈍酸洗した鋼帯の表面に生成した欠陥の一部が冷間
圧延後まで残存するものであることを見出した。Therefore, as a result of diligent investigations on the cause of gloss inhibition, the present inventors have found that mesh-like microscopic defects remain on the surface of the product steel strip, which causes the surface gloss to decrease. .. However, it was found that this network defect remains on the surface of the steel strip after cold rolling that affects the surface properties of the product, and further, the network defect that remains on the surface of the steel strip after cold rolling. Found that some of the defects formed on the surface of the steel strip before cold rolling, that is, the steel strip annealed and pickled after hot rolling remain until after cold rolling.
【００１２】また、熱延後に焼鈍酸洗した鋼帯の表面を
詳細に調査した結果、この網目状欠陥は鋼帯表面の結晶
粒界に一致することが判明し、結晶粒界に沿って生成す
るクロム欠乏層が原因であることを把握した。即ち、ス
テンレス鋼帯を熱間圧延及び焼鈍すると、結晶粒界に沿
ってクロム欠乏層が生成する。このクロム欠乏層はマル
テンサイトとなって熱間脆性を持つため著しく割れが発
生し易い（以下、この割れを粒界われと称する）。然
も、焼鈍された鋼帯は酸洗によって鋼帯表面の酸化スケ
ールを除去するが、粒界われは、この酸洗時の酸により
浸食を受けて更に拡大し増加する。Further, as a result of a detailed examination of the surface of the steel strip which has been annealed and pickled after hot rolling, it was found that this mesh-like defect coincided with the grain boundary of the steel strip surface, and was formed along the grain boundary. It has been understood that the cause is a chromium deficient layer. That is, when a stainless steel strip is hot rolled and annealed, a chromium deficient layer is formed along the grain boundaries. This chromium-deficient layer becomes martensite and has hot brittleness, so that cracks are apt to occur (hereinafter, this crack is referred to as grain boundary). However, the annealed steel strip removes the oxide scale on the surface of the steel strip by pickling, but the grain boundaries are further corroded by the acid during this pickling and further expand and increase.
【００１３】この鋼帯を大量の圧延油を供給して冷間圧
延すると、粒界われの内部に圧延油が封入されてロール
及び鋼帯との接触部分で押し潰されにくくなる結果、粒
界われが冷延後も残留し、更に製品鋼帯の表面にも残留
して、表面光沢を低下させていたわけである。When this steel strip is cold-rolled by supplying a large amount of rolling oil, the rolling oil is enclosed inside the grain boundary and is less likely to be crushed at the contact portion with the roll and the steel strip. We remained after cold rolling, and also remained on the surface of the product steel strip, thus lowering the surface gloss.
【００１４】そこで、この粒界われの生成を根本的にな
くすために、本発明者らは以下の方法を検討した。 (1) 粒界われの生成原因であるクロム欠乏層を著しく減
少させる。 (2) 粒界われを機械的に除去する。 (3) 粒界われを押し潰す。Therefore, in order to fundamentally eliminate the formation of the grain boundary, the present inventors examined the following method. (1) Remarkably reduce the chromium-deficient layer that is the cause of grain boundary crack formation. (2) Mechanical removal of grain boundaries. (3) Crush the grain boundaries.
【００１５】これらの中で、最も効果が大きく然も安価
に実施できる方法として、本発明者らはクロム欠乏層を
減少させる方法を採用した。Of these, the present inventors have adopted the method of reducing the chromium deficient layer as a method which has the greatest effect and can be implemented at a low cost.
【００１６】クロム欠乏層を減少させるにはその生成を
抑制すると良く、高温の加熱された鋼板を冷却すること
が効果を示すことが知られている。It is known that in order to reduce the chromium deficient layer, its formation should be suppressed, and it is known that cooling the steel sheet heated at high temperature is effective.
【００１７】ところが、 850〜1150℃の温度で熱間圧延
した後、約1200℃の高温で焼鈍したステンレス鋼帯につ
いて、クロム欠乏層が熱延段階で生成するのかその後の
焼鈍段階で生成するのかは全く不明であり、また、その
生成を効果的に抑制するために、これに連続して鋼帯を
冷却すべき温度の範囲及び冷却速度についても全く判明
していなかった。However, for the stainless steel strip annealed at a high temperature of about 1200 ° C. after hot rolling at a temperature of 850 to 1150 ° C., is a chromium deficient layer formed in the hot rolling step or in the subsequent annealing step? Is completely unknown, and in order to effectively suppress the formation, the temperature range and the cooling rate at which the steel strip should be continuously cooled are not known at all.
【００１８】そこで、本発明者らは、これらについて鋭
意検討したところ、熱延段階よりもその後に焼鈍した鋼
帯の表面に深くて多量のクロム欠乏層が生成して粒界わ
れとなることを見出した。即ち、焼鈍後の鋼帯をこれに
連続して急冷すれば良いわけである。Therefore, the inventors of the present invention have made diligent studies on these, and found that a large amount of chromium-deficient layer is formed deeply on the surface of the steel strip annealed after the hot rolling step to form grain boundaries. I found it. That is, the steel strip after annealing may be rapidly cooled continuously.
【００１９】また、急冷を開始するタイミングについて
検討したところ、種々のオーステナイト系ステンレス鋼
板のいずれについても、クロム欠乏層を著しく減少させ
て粒界われをなくすには焼鈍直後からの急冷が良いこと
を見出した。Further, when the timing of starting the quenching was examined, it was found that the quenching immediately after the annealing was good for any of various austenitic stainless steel sheets in order to significantly reduce the chromium deficient layer and eliminate grain boundaries. I found it.
【００２０】また、オーステナイト系ステンレス鋼帯の
冷却速度を種々変更して得られた鋼帯の粒界われを観察
したところ、25℃／秒以上の冷却速度であれば粒界われ
が著しく減少し、その鋼帯を冷間圧延して仕上げた製品
の表面光沢は著しく向上することを見出した。The grain boundaries of the steel strips obtained by variously changing the cooling rate of the austenitic stainless steel strip were observed. The grain boundaries significantly decreased at a cooling rate of 25 ° C./sec or more. , Found that the surface gloss of a product obtained by cold rolling the steel strip is significantly improved.
【００２１】更に、急冷を開始するタイミング（焼鈍直
後）での鋼帯温度について検討したところ、オーステナ
イト系の代表的なステンレス鋼板であるSUS304において
は、クロム欠乏層を著しく減少させて粒界われをなくす
には鋼帯温度が 850〜400 ℃の範囲で急冷すると良いこ
とを見出した。Further, when the steel strip temperature at the timing of starting quenching (immediately after annealing) was examined, in the SUS304 which is a typical austenitic stainless steel sheet, the chromium deficient layer was remarkably reduced and the grain boundary was reduced. It was found that quenching can be done by rapidly cooling the steel strip in the temperature range of 850 to 400 ℃.
【００２２】本発明の装置構成の一例を図１に示す。本
発明の装置構成は、熱延後のステンレス鋼帯を供給する
ペイオフリール１、焼鈍装置２、急冷装置３、酸洗装置
４、鋼帯の巻取リール５からなる。ここで、急冷装置３
は焼鈍装置２に直結される。FIG. 1 shows an example of the apparatus configuration of the present invention. The apparatus configuration of the present invention comprises a payoff reel 1 for supplying a hot rolled stainless steel strip, an annealing device 2, a quenching device 3, a pickling device 4, and a steel strip winding reel 5. Here, the quenching device 3
Is directly connected to the annealing device 2.
【００２３】尚、本発明の焼鈍直後の鋼帯を冷却する急
冷装置３としては、冷却水又は温水に浸漬する装置、冷
却水又は温水をノズルからそのまま供給する装置、冷却
水又は温水を霧状にして供給する装置、水蒸気を供給す
る装置、液体窒素等の液状ガスを供給する装置等を採用
できるが、いずれも焼鈍装置２の出側に設置する必要が
あり、また、冷却速度25℃／秒以上の能力を有する流量
及び圧力の冷却流体を供給可能とすることが必要であ
る。As the quenching device 3 for cooling the steel strip immediately after annealing according to the present invention, a device for immersing it in cooling water or hot water, a device for directly supplying cooling water or hot water from a nozzle, or a cooling water or hot water mist It is possible to adopt a device for supplying the gas as described above, a device for supplying water vapor, a device for supplying a liquid gas such as liquid nitrogen, etc., but all of them must be installed on the outlet side of the annealing device 2, and a cooling rate of 25 ° C It is necessary to be able to supply a cooling fluid with a flow rate and pressure that has a capacity of more than a second.
【００２４】[0024]
（実施例１）（表１〜表３参照） オーステナイト系の例としてのSUS304鋼帯を熱延後に焼
鈍し、本発明方法に従って焼鈍直後から25℃／秒以上の
冷却速度で急冷し、酸洗した。(Example 1) (see Tables 1 to 3) Austenitic SUS304 steel strip as an example is annealed after hot rolling, and immediately after annealing according to the method of the present invention, rapidly cooled at a cooling rate of 25 ° C / sec or more, and pickled. did.
【００２５】また、本発明の比較例として、SUS304鋼帯
を熱延後に焼鈍し、焼鈍直後から25℃／秒未満の冷却速
度で水冷し、酸洗した。As a comparative example of the present invention, a SUS304 steel strip was annealed after hot rolling, immediately after annealing, water-cooled at a cooling rate of less than 25 ° C./sec, and pickled.
【００２６】更に、従来例として、SUS304鋼帯を熱延後
に焼鈍し、焼鈍直後は徐冷しその後水冷して酸洗した。Further, as a conventional example, a SUS304 steel strip was annealed after hot rolling, gradually cooled immediately after annealing, then water cooled and pickled.
【００２７】これら鋼帯を複数製造し、大量の圧延油を
供給しつつ、一部を大径ロールを用いる冷間タンデムミ
ルで圧延し、一部を小径ロールを用いるゼンジミアミル
で圧延し、また、残りをタンデムミルで圧延した後に更
にゼンジミアミルで冷間圧延した。また、冷延後に同一
条件で仕上焼鈍酸洗又は仕上光輝焼鈍を施し、仕上調質
圧延した。尚、仕上焼鈍した鋼帯は、調質圧延後に同一
条件でバフ研磨を施した。A plurality of these steel strips are manufactured, a part of them is rolled by a cold tandem mill using large diameter rolls, and a part of them is rolled by a Sendzimir mill using small diameter rolls while supplying a large amount of rolling oil. The rest was rolled in a tandem mill and then cold-rolled in a Sendzimir mill. Further, after cold rolling, finish annealing pickling or finish bright annealing was performed under the same conditions, and finish temper rolling was performed. The finish annealed steel strip was buffed under the same conditions after temper rolling.
【００２８】これら仕上げた鋼帯の表面光沢について、
JIS Z8741 光沢度測定方法 5（GS20°）に従って測定
し、光沢の良好な順に光沢度 950以上を特Ａ、800 〜 9
50をＡ、 600〜 800をＢ、 400〜 600をＣ、 400以下を
Ｄとして５段階で評価した。Regarding the surface gloss of these finished steel strips,
Measured according to JIS Z8741 Glossiness Measurement Method 5 (GS20 °). Glossiness of 950 or higher is special A, 800-9
The evaluation was performed in five levels, with 50 as A, 600 to 800 as B, 400 to 600 as C, and 400 or less as D.
【００２９】これらの結果につて、表１に冷間タンデム
ミルで圧延した場合、表２にゼンジミアミルで圧延した
場合、表３にタンデムミルで圧延した後に更にゼンジミ
アミルで冷間圧延した場合を示す。The results are shown in Table 1, when cold-rolled by a tandem mill, in Table 2 when rolled by a Sendzimir mill, and in Table 3 when rolled by a tandem mill and further cold-rolled by a Sendzimir mill.
【００３０】[0030]
【表１】 [Table 1]
【００３１】[0031]
【表２】 [Table 2]
【００３２】[0032]
【表３】 [Table 3]
【００３３】これらの表より、本発明により製造したス
テンレス冷延鋼帯は、従来の方法で製造した鋼帯及び比
較例として製造した鋼帯に比べて著しく良好な光沢を有
することを認めた。From these tables, it was confirmed that the stainless cold-rolled steel strip produced according to the present invention has a significantly better gloss than the steel strip produced by the conventional method and the steel strip produced as the comparative example.
【００３４】（実施例２）（表４〜表６参照） オーステナイト系の例としての SUS304 鋼帯を熱延後に
焼鈍し、本発明方法に従って焼鈍直後から 850℃〜 400
℃の鋼帯温度範囲にて25℃／秒の冷却速度で水冷し、酸
洗した。(Example 2) (See Tables 4 to 6) SUS304 steel strip as an example of an austenite type is annealed after hot rolling, and 850 ° C-400 immediately after annealing according to the method of the present invention.
It was water-cooled at a cooling rate of 25 ° C./sec in a steel strip temperature range of 0 ° C. and pickled.
【００３５】また、本発明の比較例として、SUS304鋼帯
を熱延後に焼鈍し、焼鈍直後から 850℃〜 400℃の鋼帯
温度範囲にて25℃／秒未満の冷却速度で水冷し、酸洗し
た。As a comparative example of the present invention, a SUS304 steel strip is annealed after hot rolling, and immediately after the annealing, water cooling is performed in a steel strip temperature range of 850 ° C. to 400 ° C. at a cooling rate of less than 25 ° C./sec. Washed
【００３６】更に、従来例として、SUS304鋼帯を熱延後
に焼鈍し、焼鈍後の鋼帯温度を 700℃付近まで徐冷しそ
の後水冷して酸洗した。Further, as a conventional example, a SUS304 steel strip was annealed after hot rolling, the steel strip temperature after annealing was gradually cooled to around 700 ° C., then water cooled and pickled.
【００３７】これら鋼帯を複数製造し、大量の圧延油を
供給しつつ、一部を大径ロールを用いる冷間タンデムミ
ルで圧延し、一部を小径ロールを用いるゼンジミアミル
で圧延し、また、残りをタンデムミルで圧延した後に更
にゼンジミアミルで冷間圧延した。また、冷延後に同一
条件で仕上焼鈍酸洗又は仕上光輝焼鈍を施し、仕上調質
焼鈍した。尚、仕上焼鈍した鋼帯は、調質圧延後に同一
条件でバフ研磨を施した。A plurality of these steel strips were produced and, while supplying a large amount of rolling oil, part of them was rolled by a cold tandem mill using large diameter rolls and part of them was rolled by a Sendzimir mill using small diameter rolls. The rest was rolled in a tandem mill and then cold-rolled in a Sendzimir mill. Further, after cold rolling, finish annealing pickling or finish bright annealing was performed under the same conditions, and finish temper annealing was performed. The finish annealed steel strip was buffed under the same conditions after temper rolling.
【００３８】これら仕上げた鋼帯の表面光沢につて、JI
S Z8741 光沢度測定方法 5（GS 20°）に従って測定
し、光沢の良好な順に光沢度 950以上を特Ａ、800 〜95
0 をＡ、600 〜 800をＢ、 400〜600 をＣ、400 以下を
Ｄとして５段階で評価した。Regarding the surface gloss of these finished steel strips, JI
S Z8741 Measured according to Glossiness Measurement Method 5 (GS 20 °), the glossiness is 950 or more in the order of good gloss. Special A, 800-95
0 was A, 600 to 800 was B, 400 to 600 was C, and 400 or less was D.
【００３９】これらの結果について、表４に冷間タンデ
ムミルで圧延した場合、表５にゼンジミアミルで圧延し
た場合、表６にタンデムミルで圧延した後に更にゼンジ
ミアミルで冷間圧延した場合を示す。Regarding these results, Table 4 shows the case of rolling with a cold tandem mill, Table 5 shows the case of rolling with a Sendzimir mill, and Table 6 shows the case of rolling with a tandem mill and then cold rolling with a Sendzimir mill.
【００４０】[0040]
【表４】 [Table 4]
【００４１】[0041]
【表５】 [Table 5]
【００４２】[0042]
【表６】 [Table 6]
【００４３】これらの表より、本発明により製造したス
テンレス冷延鋼帯は、従来の方法で製造した鋼帯及び比
較例として製造した鋼帯に比べて著しく良好な光沢を有
することを認めた。From these tables, it was confirmed that the stainless cold-rolled steel strip produced according to the present invention has a significantly better gloss than the steel strip produced by the conventional method and the steel strip produced as the comparative example.
【００４４】[0044]
【発明の効果】以上の通り、本発明により予備処理し、
その後に冷間圧延して仕上げたステンレス冷延鋼帯は、
従来の方法により製造した鋼帯に比較して著しく優れた
表面光沢を有する。特に、冷間タンデムミル等の大径ロ
ールを用いた場合、従来全く到達不可能であったゼンジ
ミアミル等の小径ロールを用いた圧延と同等以上の優れ
た表面光沢を有する。As described above, the pretreatment according to the present invention,
After that, the cold rolled stainless steel strip finished by cold rolling is
It has remarkably excellent surface gloss as compared with the steel strip manufactured by the conventional method. In particular, when a large-diameter roll such as a cold tandem mill is used, it has a surface gloss equal to or better than that of a rolling using a small-diameter roll such as a Sendzimir mill, which has hitherto been unattainable.
【図１】図１は本発明装置の一例を示す模式図である。FIG. 1 is a schematic view showing an example of a device of the present invention.
２ 焼鈍装置 ３ 急冷装置 2 Annealing device 3 Quenching device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 正彦 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 小堀 克浩 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 佐藤 邦昭 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masahiko Ito 1 Kawasaki-cho, Chiba-shi, Chiba Inside Kawasaki Steel Co., Ltd. (72) Inventor Katsuhiro Kobori 1 Kawasaki-cho, Chiba-shi Chiba Steel Co., Ltd. In-house (72) Inventor Kuniaki Sato 1 Kawasaki-cho, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Works
Claims (3)
し、これに連続して該鋼帯を焼鈍直後から25℃／秒以上
の冷却速度で急冷することを特徴とする冷間圧延用ステ
ンレス予備処理鋼帯の製造方法。1. For cold rolling, characterized in that the stainless steel strip after hot rolling is annealed, and subsequently this steel strip is rapidly cooled at a cooling rate of 25 ° C./sec or more immediately after annealing. Manufacturing method of stainless pretreated steel strip.
し、これに連続して該鋼帯を焼鈍直後から該鋼帯温度が
850℃〜 400℃の範囲にて25℃／秒以上の冷却速度で急
冷することを特徴とする冷間圧延用ステンレス予備処理
鋼帯の製造方法。2. The stainless steel strip after hot rolling is annealed, and the temperature of the steel strip is continuously increased immediately after annealing the steel strip.
A method for producing a stainless pretreated steel strip for cold rolling, which comprises rapidly cooling at a cooling rate of 25 ° C / sec or more in a range of 850 ° C to 400 ° C.
と、該焼鈍装置に直結して鋼帯を急冷するための急冷装
置と、該急冷装置の出側に設置される酸洗装置とからな
ることを特徴とする冷間圧延用ステンレス予備処理鋼帯
の製造装置。3. An annealing device for hot-rolled stainless steel strip, a quenching device directly connected to the annealing device for quenching the steel strip, and a pickling device installed on the outlet side of the quenching device. An apparatus for producing a cold-rolled stainless steel pre-treated steel strip, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245192A JPH05271781A (en) | 1992-03-30 | 1992-03-30 | Manufacture of stainless pretreated steel strip for cold rolling and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245192A JPH05271781A (en) | 1992-03-30 | 1992-03-30 | Manufacture of stainless pretreated steel strip for cold rolling and apparatus therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05271781A true JPH05271781A (en) | 1993-10-19 |
Family
ID=14327843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10245192A Withdrawn JPH05271781A (en) | 1992-03-30 | 1992-03-30 | Manufacture of stainless pretreated steel strip for cold rolling and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05271781A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2911485A1 (en) * | 1978-03-23 | 1979-09-27 | Fujitsu Fanuc Ltd | PROCEDURE FOR ADJUSTING A SCAN HEAD |
| KR101360616B1 (en) * | 2011-12-28 | 2014-02-10 | 주식회사 포스코 | Stainless steel sheet having superior punching propery and method for manufacturing the same |
| JP2015134951A (en) * | 2014-01-17 | 2015-07-27 | Ｊｆｅスチール株式会社 | Cooling control device and cooling control method |
-
1992
- 1992-03-30 JP JP10245192A patent/JPH05271781A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2911485A1 (en) * | 1978-03-23 | 1979-09-27 | Fujitsu Fanuc Ltd | PROCEDURE FOR ADJUSTING A SCAN HEAD |
| KR101360616B1 (en) * | 2011-12-28 | 2014-02-10 | 주식회사 포스코 | Stainless steel sheet having superior punching propery and method for manufacturing the same |
| JP2015134951A (en) * | 2014-01-17 | 2015-07-27 | Ｊｆｅスチール株式会社 | Cooling control device and cooling control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
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