JPH064895B2 - Continuous annealing furnace for cold rolled stainless steel strip - Google Patents
Continuous annealing furnace for cold rolled stainless steel stripInfo
- Publication number
- JPH064895B2 JPH064895B2 JP1100834A JP10083489A JPH064895B2 JP H064895 B2 JPH064895 B2 JP H064895B2 JP 1100834 A JP1100834 A JP 1100834A JP 10083489 A JP10083489 A JP 10083489A JP H064895 B2 JPH064895 B2 JP H064895B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- steel strip
- annealing furnace
- oil
- furnace
- 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 - Lifetime
Links
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- 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〕 この発明は、生産能率を低下することなく、ステンレス
鋼帯の製品品質を向上し、且つ歩留まりを改善できる冷
間圧延ステンレス鋼帯の連続焼鈍炉に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides continuous annealing of a cold-rolled stainless steel strip capable of improving the product quality of the stainless steel strip and improving the yield without lowering the production efficiency. Regarding the furnace.
一般に、ステンレス鋼帯の冷間圧延製品は、その表面性
状として高光沢で且つキズの無いものが要求される。Generally, a cold rolled product of a stainless steel strip is required to have a high gloss and no scratch as a surface property.
このような製品の通常の製造工程においては、冷間圧延
されたステンレス鋼帯をそのまま、第３図に示すような
連続焼鈍炉によって焼鈍が施される。同図において、ス
テンレス鋼帯５は焼鈍炉１に配設された入口ローラ２，
出口ローラ３，炉内支持ローラ４ａ，４ｂ等によって支
持されて炉内を走行する間に、炉側壁に設けられたバー
ナ６によって所定の焼鈍温度にまで加熱される。ここ
で、ステンレス製品は前述のごとく、キズの無い高度に
均一な表面外観を要求されるので、鋼帯が熱処理中にお
いてキズが発生しないように前記炉内支持ローラ４ａ，
４ｂはアスベストで構成されている。In a usual manufacturing process of such a product, the cold-rolled stainless steel strip is annealed as it is in a continuous annealing furnace as shown in FIG. In the figure, the stainless steel strip 5 is an inlet roller 2 arranged in the annealing furnace 1.
While traveling in the furnace while being supported by the outlet roller 3, the in-furnace support rollers 4a, 4b, etc., it is heated to a predetermined annealing temperature by the burner 6 provided on the side wall of the furnace. Here, as described above, the stainless steel product is required to have a highly uniform surface appearance without scratches. Therefore, in order to prevent the steel strip from being scratched during the heat treatment, the in-furnace support rollers 4a,
4b is composed of asbestos.
ところで、冷間圧延されたままのステンレス鋼帯の表面
には、圧延油や圧延摩耗粉等が不均一に付着しており、
このまま焼鈍すると表面酸化反応がこれらの付着状態に
対応して不均一に進行し、鋼帯表面に光沢ムラなど模様
が生じる。そして、このような現象を防止するために、
焼鈍炉の入側でステンレス鋼帯を脱脂して表面を清浄に
することも試みられたが、脱脂後のステンレスの表面は
非常に熱放射率が小さく、その結果、第２図の曲線Ｂに
示すように加熱時間が圧延ままの圧延油が付着した鋼帯
の加熱曲線Ａに比べて1.4倍となり、生産能率が大きく
低下する。ここで使用されたステンレス鋼帯はＳＵＳ３
０４で板厚は１mm、炉温は１１３０度であった。By the way, on the surface of the cold rolled stainless steel strip, rolling oil, rolling wear powder, etc. are unevenly attached,
If this is annealed as it is, the surface oxidation reaction proceeds non-uniformly corresponding to these adhered states, and a pattern such as uneven gloss occurs on the steel strip surface. And in order to prevent such a phenomenon,
Attempts have also been made to degrease the stainless steel strip on the inlet side of the annealing furnace to clean the surface, but the surface of the stainless steel after degreasing has a very low thermal emissivity, and as a result, the curve B in FIG. As shown, the heating time is 1.4 times that of the heating curve A of the steel strip to which the as-rolled rolling oil adheres, and the production efficiency is greatly reduced. The stainless steel strip used here is SUS3.
In 04, the plate thickness was 1 mm and the furnace temperature was 1130 degrees.
そこで、以上の問題点を解決する方法として特開昭６２
−１７１３８号公報にその技術が開示されている。すな
わち、この方法は、冷間圧延後の圧延油や圧延摩耗粉が
不均一に付着したステンレス鋼板の表面に、更に油を均
一に塗ってもともと付いていた圧延油や圧延摩耗粉を表
面上に均一に分散させるものである。Therefore, as a method for solving the above problems, Japanese Patent Laid-Open No. 62-62
The technique is disclosed in Japanese Patent Publication No. -17138. That is, this method, rolling oil and rolling wear powder after cold rolling are unevenly adhered to the surface of the stainless steel sheet, and even if the oil is evenly applied, rolling oil and rolling wear powder originally attached to the surface It is to disperse uniformly.
しかし、本発明者らが、上記の方法により前処理された
ステンレス鋼帯を連続焼鈍したところ、たしかに、光沢
ムラが発生しないことと生産能率を低下しない、という
効果は確認されたが、ステンレス鋼帯の重要な表面品質
であるキズの発生は完全に解消されないことがわかっ
た。However, when the present inventors continuously anneal the stainless steel strip pretreated by the above method, it is confirmed that the uneven gloss does not occur and the production efficiency does not decrease, but the stainless steel is confirmed. It was found that the occurrence of scratches, which is an important surface quality of the strip, is not completely eliminated.
このキズは、本発明者らの実験的研究の結果、ステンレ
ス鋼帯の表面に付着した圧延摩耗粉が、炉内支持ローラ
４ａ，４ｂの表面に取り込まれ、こらが核となってロー
ラ４ａ，４ｂの表面にスケールが成長し、これにステン
レス鋼帯が高温状態で接触することにより発生すること
がわかった。As a result of an experimental study conducted by the inventors of the present invention, the scratches are caused by the rolling abrasion powder adhering to the surface of the stainless steel strip being taken into the surfaces of the in-furnace support rollers 4a, 4b, and these scratches serve as nuclei. It was found that the scale was grown on the surface of 4b and the stainless steel strip was brought into contact with the scale at a high temperature to generate the scale.
この発明は、このような従来の問題点にかんがみてなさ
れたものであって、焼鈍炉の入側に脱脂装置と油塗布装
置を設けることによって上記課題を解決することを目的
としている。The present invention has been made in view of such conventional problems, and an object thereof is to solve the above problems by providing a degreasing device and an oil coating device on the inlet side of the annealing furnace.
この発明は、冷間圧延後のステンレス鋼帯を焼鈍する連
続焼鈍炉において、該焼鈍炉の入側に、前面ステンレス
鋼帯の前処理工程として、脱脂装置及び油塗布装置を設
けた冷間圧延ステンレス鋼帯の連続焼鈍炉としたもので
ある。This invention relates to a continuous annealing furnace for annealing a cold rolled stainless steel strip, in which a degreasing device and an oil coating device are provided on the inlet side of the annealing furnace as a pretreatment process for the front stainless steel strip. This is a continuous annealing furnace for stainless steel strip.
この発明は、上記のような構成となっているので、冷間
圧延後のステンレス鋼帯は先ず脱脂装置において表面に
付着していた圧延油や圧延摩耗粉等を除去して清浄にす
ることにより、焼鈍加熱間におけるキズの発生を防ぐと
ともに、清浄後、直ちに油を均一に塗布することにより
焼鈍加熱の際の熱放射率を大きくして加熱時間を長くし
ないことにより生産能率の低下も防止できる。Since the present invention is configured as described above, the stainless steel strip after cold rolling is first cleaned by removing rolling oil, rolling abrasion powder, etc. adhering to the surface in the degreasing device. , While preventing the occurrence of scratches during annealing heating, it is also possible to prevent the production efficiency from decreasing by increasing the thermal emissivity during annealing heating by uniformly applying oil immediately after cleaning and not increasing the heating time. .
すなわち、以上によってステンレス表面に光沢ムラやキ
ズも発生せず、且つ生産能率が低下することもない。That is, by the above, neither uneven luster nor scratches occur on the stainless steel surface, and the production efficiency does not decrease.
以下、本発明の構成を本装置の模式図である第１図を参
照して説明する。焼鈍炉１は従来例である第３図で説明
した焼鈍炉と同じものであるが、本発明においてはこの
焼鈍炉１の入側に近接して脱脂装置７，油塗布装置８が
配設されている。Hereinafter, the configuration of the present invention will be described with reference to FIG. 1, which is a schematic diagram of the present apparatus. The annealing furnace 1 is the same as the annealing furnace described in FIG. 3 which is a conventional example, but in the present invention, a degreasing device 7 and an oil coating device 8 are arranged close to the inlet side of the annealing furnace 1. ing.
このように構成された連続焼鈍炉において、ステンレス
鋼帯５は、先ず脱脂装置７において、その表面に不均一
に付着した圧延油を取り除かれるとともに、同時に表面
に付着した圧延摩耗粉や、前工程で付着した異物等が除
去されて表面が清浄になる。In the continuous annealing furnace configured as described above, the stainless steel strip 5 is first subjected to degreasing apparatus 7 to remove rolling oil that is unevenly attached to the surface thereof, and at the same time, to be subjected to rolling wear powder attached to the surface and pre-process. The foreign matter and the like adhered by are removed and the surface is cleaned.
次に、清浄となったステンレス鋼帯５の表面には、直ち
に油塗布装置８において油が表面に均一に塗布される。
ここで、油の塗布方法はスプレー，ロールコートなど公
知の方法でよいが、表面に均一に塗布することが重要で
ある。また塗布する油の種類としては、均一に塗布しや
すい粘度を有するものであれば良く、例えば圧延油など
が望ましい。Next, the clean surface of the stainless steel strip 5 is immediately coated with oil uniformly in the oil coating device 8.
Here, the oil may be applied by a known method such as spraying or roll coating, but it is important to apply it uniformly on the surface. The type of oil to be applied may be any one as long as it has a viscosity that facilitates uniform application, and for example, rolling oil is desirable.
ここで、脱脂装置７，油塗布装置８，焼鈍炉１は本発明
の目的に沿うために、可能な限り相互に隣接して配設す
ることが望まれる。すなわち、脱脂装置７で表面を清浄
にされたステンレス鋼帯５を、可能な限り各種ローラな
どに接触することを避けて速やかに焼鈍炉１内へ装入し
て、異物が再び付着して表面キズ発生の原因を防ぐとこ
と、全く同様に脱脂工程を終えたら直ちに油塗布装置８
において均一に塗布された油が、やはりローラなどに接
触してムラができることを避けることが重要であるから
である。Here, it is desirable that the degreasing device 7, the oil coating device 8 and the annealing furnace 1 are arranged as close to each other as possible in order to achieve the object of the present invention. That is, the stainless steel strip 5 whose surface has been cleaned by the degreasing device 7 is quickly charged into the annealing furnace 1 while avoiding contact with various rollers, etc. as much as possible, and foreign matter is reattached and the surface is removed. Preventing the cause of scratches, and just like the oil applying device 8 immediately after the degreasing process is completed.
This is because it is important to avoid that the evenly applied oil is unevenly contacted with a roller or the like.
次に本発明の一実施例を説明する。Next, an embodiment of the present invention will be described.
焼鈍炉１は炉長４５ｍで炉内にはアスベストで構成され
た炉内支持ローラ４ａ，４ｂが１５ｍピッチで設置され
ている。The annealing furnace 1 has a furnace length of 45 m, and in-furnace support rollers 4a and 4b made of asbestos are installed in the furnace at a pitch of 15 m.
脱脂装置７は、従来公知のごとく、電解洗浄タンク、水
洗タンク等から構成されている。The degreasing device 7 is composed of an electrolytic cleaning tank, a water cleaning tank, etc., as conventionally known.
油塗布装置８はスプレー法で油を塗布する装置で、油と
しては４０℃での粘度が８cStの圧延油を0.1ｇ／ｍ２ほ
ど塗布するようになっている。The oil applying device 8 is a device for applying oil by a spray method, and as the oil, rolling oil having a viscosity of 8 cSt at 40 ° C. is applied at about 0.1 g / m 2 .
また、脱脂装置７，油塗布装置８，焼鈍炉１の各々の間
隔は、可能なかぎり近接させて、その間には支持ローラ
９，入口ローラ２と各１本の支持ローラを設置してあ
る。Further, the degreasing device 7, the oil coating device 8 and the annealing furnace 1 are arranged as close to each other as possible, and a supporting roller 9, an inlet roller 2 and one supporting roller are provided between them.
以上に示した連続焼鈍炉で、板厚１mmのＳＵＳ３０４ス
テンレス鋼帯を焼鈍した結果を、従来法と比較して表１
に示す。 The results of annealing a SUS304 stainless steel strip having a plate thickness of 1 mm in the continuous annealing furnace shown above are shown in Table 1 in comparison with the conventional method.
Shown in.
この表から明らかなように、本発明によれば、光沢ムラ
などの外観不良や炉内で発生するキズなどの問題を、ラ
インスピードすなわち生産能率の低下を生じることなく
解決することができた。As is apparent from this table, according to the present invention, problems such as poor appearance such as uneven glossiness and scratches generated in the furnace can be solved without causing a decrease in line speed, that is, production efficiency.
なお、特開昭６２−１７１３８号公報による方法では、
表面に不均一に付着した圧延油の上に、更に油を上塗り
するため、0.2〜2.0ｇ／ｍ２の塗油量が必要であった
が、本実施例では0.1ｇ／ｍ２の塗油量でもよく、油使
用量削減の効果も大であった。Incidentally, in the method according to Japanese Patent Laid-Open No. 62-17138,
On the rolling oil was unevenly adhered to the surface, in order to further overcoated oil, 0.2 to 2.0 g / m 2 of but unction amount was necessary, in this embodiment the coating oil of 0.1 g / m 2 The amount may be sufficient, and the effect of reducing the amount of oil used was great.
以上説明したように、本発明によれば以下のごとき効果
が得られた。すなわち、炉内でのキズ発生が無くなり、
光沢ムラなど表面外観の不良が発生せず、その結果、ス
テンレス鋼帯の製品品質が向上し、歩留まりも著しく改
善できた。また、以上の効果を生産能率の低下をきたす
ことなく達成でき、燃料原単位も向上した。更に、油使
用量も大幅に低減できた。As described above, according to the present invention, the following effects are obtained. That is, there is no scratch in the furnace,
There were no defects in surface appearance such as uneven gloss, and as a result, the product quality of the stainless steel strip was improved and the yield was significantly improved. In addition, the above effects can be achieved without lowering the production efficiency, and the fuel consumption rate has also been improved. In addition, the amount of oil used could be greatly reduced.
第１図は本発明に係る実施例の模式図、第２図は圧延ま
まで圧延油の付着した鋼帯Ａと脱脂後の鋼帯Ｂとの加熱
時間と上昇温度との関係比較図、第３図は従来例の焼鈍
炉の概略断面図である。 １……連続焼鈍炉、５……ステンレス鋼帯、７……脱脂
装置、８……油塗布装置。FIG. 1 is a schematic diagram of an embodiment according to the present invention, FIG. 2 is a comparison diagram of the relationship between the heating time and the rising temperature of a steel strip A to which rolling oil has adhered as it is and a steel strip B after degreasing, FIG. 3 is a schematic sectional view of a conventional annealing furnace. 1 ... Continuous annealing furnace, 5 ... Stainless steel strip, 7 ... Degreasing device, 8 ... Oil coating device.
フロントページの続き (72)発明者 村本 晴正 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 柳沼 寛 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 (56)参考文献 特開 昭62−17138（ＪＰ，Ａ) 特開 昭50−131608（ＪＰ，Ａ)Front page continuation (72) Inventor Harumasa Muramoto 1 Kawasaki-cho, Chiba-shi, Chiba Inside the Chiba Steel Works, Kawasaki Steel Co., Ltd. 56) Reference JP 62-17138 (JP, A) JP 50-131608 (JP, A)
Claims (1)
続焼鈍炉において、該焼鈍炉の入側に、前記ステンレス
鋼帯の前処理工程として、脱脂装置及び油塗布装置を設
けたことを特徴とする冷間圧延ステンレス鋼帯の連続焼
鈍炉。1. A continuous annealing furnace for annealing a cold rolled stainless steel strip, wherein a degreasing device and an oil coating device are provided on the inlet side of the annealing furnace as a pretreatment process for the stainless steel strip. A continuous annealing furnace for cold-rolled stainless steel strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1100834A JPH064895B2 (en) | 1989-04-20 | 1989-04-20 | Continuous annealing furnace for cold rolled stainless steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1100834A JPH064895B2 (en) | 1989-04-20 | 1989-04-20 | Continuous annealing furnace for cold rolled stainless steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02277725A JPH02277725A (en) | 1990-11-14 |
| JPH064895B2 true JPH064895B2 (en) | 1994-01-19 |
Family
ID=14284346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1100834A Expired - Lifetime JPH064895B2 (en) | 1989-04-20 | 1989-04-20 | Continuous annealing furnace for cold rolled stainless steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064895B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907928A (en) * | 2016-06-25 | 2016-08-31 | 无锡市斯威克科技有限公司 | Annealing anti-oxidation device and method for copper strip |
| CN106011450B (en) * | 2016-07-06 | 2017-08-29 | 燕山大学 | Continuous annealing process is using stable logical plate and quality control as the tension optimization method of target |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50131608A (en) * | 1974-04-06 | 1975-10-17 | ||
| JPS51149818A (en) * | 1975-06-18 | 1976-12-23 | Sumitomo Metal Ind Ltd | Method of continuous annealing of steel coil strip |
| JPS5715650A (en) * | 1980-07-01 | 1982-01-27 | Nissan Motor Co Ltd | Feeding unit of machine tool |
| JPS6116407A (en) * | 1984-06-30 | 1986-01-24 | 渡辺 輝男 | Unit type illuminator in signboard |
| JPS6217138A (en) * | 1985-07-13 | 1987-01-26 | Nisshin Steel Co Ltd | Method for continuously annealing cold rolled austenitic stainless steel strip |
-
1989
- 1989-04-20 JP JP1100834A patent/JPH064895B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02277725A (en) | 1990-11-14 |
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