JPS6217138A - Method for continuously annealing cold rolled austenitic stainless steel strip - Google Patents
Method for continuously annealing cold rolled austenitic stainless steel stripInfo
- Publication number
- JPS6217138A JPS6217138A JP15469085A JP15469085A JPS6217138A JP S6217138 A JPS6217138 A JP S6217138A JP 15469085 A JP15469085 A JP 15469085A JP 15469085 A JP15469085 A JP 15469085A JP S6217138 A JPS6217138 A JP S6217138A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- oil
- stainless steel
- annealing
- 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.)
- Granted
Links
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、冷間圧延後のオーステナイト系ステンレス鋼
帯に付着している圧延油を脱脂することなく焼鈍しても
光沢ムラのない均一で良好な表面外観の銅帯に仕上げ得
る連続焼鈍方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention provides a uniform and uniform luster even when annealing is performed without degreasing rolling oil adhering to an austenitic stainless steel strip after cold rolling. This invention relates to a continuous annealing method capable of producing a copper strip with a good surface appearance.
（従来技術）
従来、冷間圧延を終えたオーステナイト系ステンレス鋼
帯の焼鈍は一般に連続焼鈍酸洗ラインに通板して行なわ
れているが、この場合、冷間圧延したままで行うと、鋼
帯表面は模様状に仕上がる。(Prior art) Conventionally, austenitic stainless steel strips that have finished cold rolling are generally annealed by passing them through a continuous annealing and pickling line. The surface of the obi is finished in a pattern.
これは、鋼帯表面に圧延油や圧延摩耗粉等が不均一に付
着したまま焼鈍されるので、焼鈍時における表面酸化反
応がこれらの付着状態に対応して不均一に進行して鋼帯
表面に模様状の酸化スケールが形成され、これが酸洗し
ても消去し得ない模様として残存するためである。This is because the steel strip is annealed with rolling oil, rolling wear powder, etc. non-uniformly adhered to the surface of the steel strip, so the surface oxidation reaction during annealing progresses unevenly in response to the adhesion of these particles, causing the surface of the steel strip to deteriorate. This is because a patterned oxide scale is formed on the surface of the material, and this pattern remains as a pattern that cannot be erased even by pickling.
この鋼帯表面に残存する模様は、光沢ムラとして、ひど
い場合は色ムラとして確認され完全に消去し難く、高度
に均一な表面外観を有するオーステナイト系冷間圧延ス
テンレス鋼帯およびそれを剪断して得られる同鋼板製品
を製造する上での障害となっていた。このような模様は
とくに焼鈍炉の加熱方式が急速加熱方式であると、酸化
スケールの生成速度が速いため、圧延油や圧延摩耗粉の
付着が多い部分と少ない部分とでは酸化スケールの生成
の差が大きくなり、その結果酸洗後光沢差が大きくなっ
て、目立ちやすくなるものであった。This pattern remaining on the surface of the steel strip is confirmed as uneven gloss or, in severe cases, as uneven color, and is difficult to completely erase. This was an obstacle in manufacturing the resulting steel plate products. This kind of pattern is caused by the difference in the formation of oxide scale between areas with a lot of rolling oil and rolling wear powder and areas with less adhesion, especially when the heating method of the annealing furnace is a rapid heating method, because the rate of oxide scale formation is fast. As a result, the difference in gloss after pickling increased and became more noticeable.
さらに竪型の焼鈍炉による急速加熱方式であると、熱流
の方向が銅帯の進行方向に流れて、圧延油や圧延摩耗粉
の汚れを上方に拡大し、模様が大きくなるため、一層目
立ちやすくなるものであった。Furthermore, when using a rapid heating method using a vertical annealing furnace, the direction of the heat flow is in the direction of travel of the copper strip, spreading the rolling oil and rolling wear powder stains upward and making the pattern larger, making it even more noticeable. It was something like that.
このため従来オーステナイＬＭステンレスｗ４帯を冷間
圧延した後連続焼鈍酸洗ラインで連続焼鈍する場合、焼
鈍前に一旦脱脂を打って、圧延油や圧延摩耗粉を除去し
、その後焼鈍を行っていた。For this reason, conventionally, when austenite LM stainless steel W4 strip was cold rolled and then continuously annealed in a continuous annealing pickling line, it was degreased before annealing to remove rolling oil and rolling wear powder, and then annealing was performed. .
（発明が解決しようとする問題点）
しかしながら脱脂設備は必ずしも焼鈍設備や連続焼鈍酸
洗ライン中に設けられているとは限らず、別個の設備に
なっていることも多く、工程が繁雑になるという欠点が
あった。(Problem to be solved by the invention) However, the degreasing equipment is not necessarily installed in the annealing equipment or the continuous annealing pickling line, but is often a separate equipment, making the process complicated. There was a drawback.
そこで脱脂せずに圧延油や圧延摩耗粉が付着したままで
連続焼鈍する方法もいくつか開発されている。例えば冷
間圧延後の銅帯に合紙を挿入して、圧延油や圧延摩耗粉
を吸収および付着させて、除去する方法、酸洗時にＷｌ
？！１度を高くして、酸洗を強化し、光沢ムラのコント
ラストを小さくする方法などである。しかし前者の方法
は合紙の厚み差の模様や挿入したときに生じたシワの模
様が転写されて、酸洗しても消えず、金紙費用が高くつ
くものであった。また後者の方法にしても光沢ムラを完
全に消すことができず、酸消費量も増加して、酸原単位
が高くなるものであった。Therefore, several methods have been developed in which continuous annealing is performed without degreasing and with rolling oil and rolling wear debris still attached. For example, a method of inserting interleaving paper into a copper strip after cold rolling to absorb and adhere rolling oil and rolling wear powder, and removing it, and a method of removing Wl during pickling.
? ! One method is to increase the 1 degree, strengthen the pickling, and reduce the contrast of uneven gloss. However, in the former method, the pattern of the difference in the thickness of the interleaf paper and the wrinkles that appeared when it was inserted were transferred, and did not disappear even after acid washing, resulting in a high cost for gold paper. Furthermore, even with the latter method, the uneven gloss could not be completely eliminated, and the amount of acid consumed increased, resulting in a high acid consumption rate.
（問題点を解決するための手段）
本発明は、従来の圧延油や圧延摩耗粉が付着したままで
連続焼鈍する方法には前記のような問題があった点に鑑
み、圧延油や圧延摩耗粉が付着したまま連続焼鈍しても
酸洗後光沢ムラとみられる模様が発生せず、すなわち焼
鈍前に脱脂した場合と同等の表面外観の銅帯が得られ、
しかもあまりコストアップを招かない連続焼鈍方法を提
供するものである。(Means for Solving the Problems) In view of the problems described above in the conventional method of continuous annealing with rolling oil and rolling wear debris attached, the present invention has been developed to Even if the copper strip is continuously annealed with the powder attached, no pattern that appears to be uneven gloss will occur after pickling; in other words, a copper strip with the same surface appearance as when it is degreased before annealing can be obtained.
Moreover, the present invention provides a continuous annealing method that does not significantly increase costs.
本発明の連続焼鈍方法は、従来の方法が鋼帯に付着して
いる圧延油や圧延摩耗粉を除去したり、減少させたりす
るという考え方に立脚しているのに対して、逆の発想に
もとずくものである。すなわち本発明者は銅帯に圧延油
や圧延摩耗粉が不均一に付着しているため、光沢ムラが
模様状に発生する点に着目して、逆に油を塗布して、そ
の付着状態を均一にすれば、光沢ムラは発生しないので
はないかとの着想のもとに、鋼帯表面に油を塗布して油
の付着状態を均一にしたところ、光沢ムラが発生しない
ことが確認されたのである。The continuous annealing method of the present invention is based on the idea of removing or reducing rolling oil and rolling wear particles attached to the steel strip, whereas the conventional method is based on the idea of removing or reducing rolling oil and rolling wear particles attached to the steel strip. It is something that comes from the beginning. In other words, the present inventor focused on the fact that gloss unevenness occurs in a pattern due to rolling oil and rolling wear particles being non-uniformly adhered to the copper strip, and applied oil on the copper strip to check the adhesion state. Based on the idea that if it was made uniform, uneven gloss would not occur, they applied oil to the surface of the steel strip to make the oil adhesion uniform, and it was confirmed that uneven gloss did not occur. It is.
かくして本発明は冷間圧延後のオーステナイト系ステン
レス銅帯を圧延油の付着した状態で連続焼鈍する方法に
おいて、焼鈍前にＪＩＳ−に−２２８３（石油製品動粘
度および粘度試験方法、１９７４年）による４０℃での
粘度が４〜８０ｅＳｔである油を該鋼帯表面に０．２〜
２０９／＋ａ２の範囲量で均一に塗布するようにしたの
である。Thus, the present invention provides a method for continuously annealing a cold-rolled austenitic stainless steel copper strip in a state in which rolling oil is attached, and the method is based on JIS-2283 (Petroleum Products Kinematic Viscosity and Viscosity Testing Method, 1974) before annealing. Apply oil having a viscosity of 4 to 80 eSt at 40°C to the surface of the steel strip.
The coating was applied uniformly in an amount within the range of 209/+a2.
本発明においてステンレス銅帯に塗布する油を上記のよ
うにしたのは、４ Ｃｓｋ未満であると、ステンレス鋼
帯に付着している圧延油より揮発性がかなり高くなるた
め、焼鈍の際圧延油より早（揮発してしまい、酸化スケ
ールが均一に生成しなくなる傾向が強く、また８０ｃＳ
Ｌを超えると、粘度が高すぎて、薄く均一に塗布するこ
とが難しくなり、油の使用量増加によるコストアップを
招いたり、塗布ムラによる光沢ムラが発生したりする場
合があるからである。In the present invention, the reason why the oil applied to the stainless steel strip is as described above is because if the oil is less than 4 Csk, it will be much more volatile than the rolling oil attached to the stainless steel strip. (There is a strong tendency that oxide scale will not be formed uniformly due to volatilization, and 80 cS
If it exceeds L, the viscosity will be too high and it will be difficult to apply thinly and uniformly, leading to increased costs due to an increased amount of oil used and uneven gloss due to uneven coating.
また塗布量を上記のようにしたのは、０．２９ ／Ｉａ
２未満であると、塗布量が少なすぎて、圧延油の不均一
な付着を埋め、均一に全体を覆うことができず、逆に２
０９７１１２を超えると、だれや流れが生じて、塗布ム
ラになり、油の使用量も増加するからである。Also, when the coating amount was set as above, it was 0.29/Ia
If it is less than 2, the amount of coating is too small and it will not be possible to fill up uneven adhesion of rolling oil and cover the entire area evenly, and conversely, the amount of coating will be too small.
This is because if it exceeds 097112, dripping or running occurs, resulting in uneven coating and an increase in the amount of oil used.
油の塗布はスプレー、ロールコート、ロールスクイズま
たは静電塗布など公知の方法でよい。また塗布場所は焼
鈍炉にステンレス鋼帯を通板しながらその入口付近で塗
布するのが好ましい。これは炉前に配置されている各種
ローラやその他のものに鋼帯表面に折角均一に塗布した
油が持去られるのを防ぐとともに、これらのローラ等を
有するラインを汚さないためである。しかしこの場合塗
右方法によっては引火性の者しいオイルミストが発生す
るので、火災発生の危険性がある。そこでオイルミスト
の発生するような塗布方法の場所には油として水分を５
〜４０％含有する引火性の低い油を使用するようにする
。ここで油の含水率が５％未満であると、引火性の低下
は小さく、４０％を超えると、焼鈍時の熱効率を低下さ
せるので、好ましくない。The oil may be applied by a known method such as spraying, roll coating, roll squeezing, or electrostatic coating. Further, it is preferable to apply the coating near the entrance of the annealing furnace while passing the stainless steel strip through the annealing furnace. This is to prevent the oil that has been evenly applied to the surface of the steel strip from being carried away by the various rollers and other items placed in front of the furnace, and to prevent the line containing these rollers from being contaminated. However, in this case, depending on the coating method, a highly flammable oil mist may be generated, posing a risk of fire. Therefore, in areas where the application method generates oil mist, 5% moisture is added as oil.
-40% less flammable oil should be used. If the moisture content of the oil is less than 5%, the decrease in flammability will be small, and if it exceeds 40%, the thermal efficiency during annealing will be reduced, which is not preferable.
また、本発明においてステンレス鋼帯をオーステナイト
系に限定しているが、これはオーステナイト系ステンレ
ス銅帯に本発明を実施した場合その効果が顕者であるか
らであり、他の７エライト系あるいはマルテンサイ）Ｍ
ステンレス鋼帯に実施しても支障ないが、その効果は薄
い。Furthermore, in the present invention, the stainless steel strip is limited to an austenitic stainless steel strip, but this is because the effect is obvious when the present invention is applied to an austenitic stainless steel copper strip; ) M
There is no problem in applying it to stainless steel strips, but the effect is weak.
次に実施例により本発明を説明する。Next, the present invention will be explained with reference to Examples.
（実施例）
実施例１
板厚１．０ｍｌの５ＵＳ３０４ステンレス鋼帯を冷間圧
延後脱脂することなく直接連続焼鈍酸洗ラインに通板し
て、焼鈍炉の入口付近で種々の粘度に調整した鉱物油を
スプレー法により塗布し、焼鈍（１１００℃で４０秒間
）、酸洗した。(Example) Example 1 After cold rolling, a 5US304 stainless steel strip with a thickness of 1.0 ml was directly passed through a continuous annealing pickling line without degreasing, and the viscosity was adjusted to various viscosity near the entrance of the annealing furnace. Mineral oil was applied by spraying, annealed (at 1100° C. for 40 seconds), and pickled.
＠１図は鉱物油の粘度および塗布量と酸洗後の表面外観
とを示したものであるが、ステンレス鋼帯の外観は鉱物
油の粘度を４〜８０ｃＳｔ、塗布量を０．２〜２０９７
ｍ２にすると良好になった。Figure @1 shows the viscosity and coating amount of mineral oil and the surface appearance after pickling.The appearance of the stainless steel strip is based on mineral oil viscosity of 4 to 80 cSt and coating amount of 0.2 to 2097 cSt.
It became better when I changed it to m2.
実施例２
実施例１と同要領で５ＵＳ３０４ステンレス鋼帯を連続
焼鈍酸洗ラインに通板しながら焼鈍炉の入口で銅帯に油
（油１００％のものまたは水を含有する１もの）を塗布
して、焼鈍、酸洗した。一方比較例として、冷間圧延後
脱脂し、その後焼鈍、酸洗する方法、冷間圧延後合紙を
挿入して圧延油を吸収し、その後焼鈍、酸洗する方法お
よび冷間圧延後直接焼鈍、酸洗する方法を行った。Example 2 In the same manner as in Example 1, oil (100% oil or one containing water) was applied to the copper strip at the entrance of the annealing furnace while passing the 5US304 stainless steel strip through the continuous annealing and pickling line. Then, it was annealed and pickled. On the other hand, as comparative examples, a method of degreasing after cold rolling, followed by annealing and pickling, a method of inserting interleaf paper after cold rolling to absorb rolling oil, then annealing and pickling, and a method of directly annealing after cold rolling. , I used the pickling method.
第１表はこの結果を示したものであるが、本発明によれ
ば、脱脂後焼鈍、酸洗した場合と同様の良好な外観にす
ることができた。Table 1 shows the results, and according to the present invention, it was possible to obtain a good appearance similar to that obtained by annealing and pickling after degreasing.
また粘度が１５ｃＳＬの鉱物油（引火点１８０’Ｃ）に
水を添加したものについて、火災安全性を調査してみた
ところ、Ｐｔ５２図に示すように水を添加すると、火災
安全性は向上することが確認された。In addition, when we investigated the fire safety of mineral oil with a viscosity of 15 cSL (flash point 180'C) and added water, we found that adding water improves fire safety as shown in Pt52 diagram. was confirmed.
なお火災安全性の調査は含水油をコンプレ７サーで濃度
５０９／ｅのオイルミストにして、オイルミストの吐出
口１ ｒｏ前方に点火源を置き、その点火源で着火した
ときの火炎面積を写真撮影法により測定する引火性試験
方法により行った。なお第２図のオイルミスト火炎面積
指数は油の含水率が０％のときの火炎面積を１００とし
ている。In addition, fire safety was investigated by converting water-containing oil into oil mist with a concentration of 509/e using a compressor 7, placing an ignition source in front of the oil mist outlet 1ro, and photographing the flame area when ignited by the ignition source. The flammability test was carried out using a photographic method. Note that the oil mist flame area index in FIG. 2 is based on the flame area of 100 when the water content of oil is 0%.
（効果）
以上のごとく本発明は冷間圧延後のオーステナイト系ス
テンレス鋼帯表面に均一に油を塗布し、脱脂することな
く焼鈍するのであるが、この方法によれば、従来の脱脂
した後焼鈍する場合と同等の表面外観にすることができ
る。(Effects) As described above, the present invention uniformly applies oil to the surface of the austenitic stainless steel strip after cold rolling and annealing it without degreasing. It is possible to achieve the same surface appearance as when
また作業的、コスト的には油を塗布するだけであるので
、従来の合紙を挿入したり、酸洗を強化する方法より簡
単で、安価である。In addition, in terms of work and cost, since it only involves applying oil, it is simpler and cheaper than the conventional methods of inserting interleaf paper or strengthening pickling.
第１図は実施例１において、本発明法により焼鈍、酸洗
した場合の鉱物油の粘度および塗布量と酸洗後の表面外
観とを示したものである。第２図は含水油のオイルミス
ト火災安全性を示すグラフである。FIG. 1 shows the viscosity and application amount of mineral oil and the surface appearance after pickling when annealing and pickling were performed by the method of the present invention in Example 1. FIG. 2 is a graph showing oil mist fire safety of water-containing oil.
Claims (2)
圧延油の付着した状態で連続焼鈍する方法において、焼
鈍前にＪＩＳ−Ｋ−２２８３による４０℃での粘度が４
〜８０ｃＳｔである油を該鋼帯表面に０．２〜２０ｇ／
ｍ＾２の範囲量で均一に塗布することを特徴とするオー
ステナイト系冷間圧延ステンレス鋼帯の連続焼鈍方法。(1) In a method of continuously annealing an austenitic stainless steel strip after cold rolling with rolling oil attached, the viscosity at 40°C according to JIS-K-2283 is 4.
0.2 to 20 g of oil of ~80 cSt is applied to the surface of the steel strip.
A continuous annealing method for an austenitic cold-rolled stainless steel strip, characterized in that the coating is applied uniformly in an amount in the range of m^2.
ことを特徴とする特許請求の範囲第１項に記載のオース
テナイト系冷間圧延ステンレス鋼帯の連続焼鈍方法。(2) The continuous annealing method for an austenitic cold-rolled stainless steel strip according to claim 1, characterized in that an oil containing 5 to 40% water is applied as the oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15469085A JPS6217138A (en) | 1985-07-13 | 1985-07-13 | Method for continuously annealing cold rolled austenitic stainless steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15469085A JPS6217138A (en) | 1985-07-13 | 1985-07-13 | Method for continuously annealing cold rolled austenitic stainless steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6217138A true JPS6217138A (en) | 1987-01-26 |
| JPH0465885B2 JPH0465885B2 (en) | 1992-10-21 |
Family
ID=15589801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15469085A Granted JPS6217138A (en) | 1985-07-13 | 1985-07-13 | Method for continuously annealing cold rolled austenitic stainless steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217138A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02277725A (en) * | 1989-04-20 | 1990-11-14 | Kawasaki Steel Corp | Continuous annealing furnace for cold-rolled stainless steel strip |
| KR20010063549A (en) * | 1999-12-22 | 2001-07-09 | 이구택 | a method of manufacturing austenitic stainless steel plates with good pickling property |
| CN1081236C (en) * | 1997-04-22 | 2002-03-20 | 阿利金尼·勒德卢姆公司 | Method for batch annealing of austenitic stainless steels |
| KR101697094B1 (en) | 2015-10-06 | 2017-01-17 | 주식회사 포스코 | Austenitic stainless steel with improved surface quality and method of manufacturing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60128214A (en) * | 1983-12-15 | 1985-07-09 | Kawasaki Steel Corp | Preventive method for formation of speck pattern on stainless steel strip |
-
1985
- 1985-07-13 JP JP15469085A patent/JPS6217138A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60128214A (en) * | 1983-12-15 | 1985-07-09 | Kawasaki Steel Corp | Preventive method for formation of speck pattern on stainless steel strip |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02277725A (en) * | 1989-04-20 | 1990-11-14 | Kawasaki Steel Corp | Continuous annealing furnace for cold-rolled stainless steel strip |
| CN1081236C (en) * | 1997-04-22 | 2002-03-20 | 阿利金尼·勒德卢姆公司 | Method for batch annealing of austenitic stainless steels |
| KR20010063549A (en) * | 1999-12-22 | 2001-07-09 | 이구택 | a method of manufacturing austenitic stainless steel plates with good pickling property |
| KR101697094B1 (en) | 2015-10-06 | 2017-01-17 | 주식회사 포스코 | Austenitic stainless steel with improved surface quality and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0465885B2 (en) | 1992-10-21 |
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