JPH0324286A - Method and device for continuously annealing and pickling band stainless steel - Google Patents
Method and device for continuously annealing and pickling band stainless steelInfo
- Publication number
- JPH0324286A JPH0324286A JP15704289A JP15704289A JPH0324286A JP H0324286 A JPH0324286 A JP H0324286A JP 15704289 A JP15704289 A JP 15704289A JP 15704289 A JP15704289 A JP 15704289A JP H0324286 A JPH0324286 A JP H0324286A
- Authority
- JP
- Japan
- Prior art keywords
- scale
- stainless steel
- pickling
- roll
- steel
- 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.)
- Pending
Links
- 238000005554 pickling Methods 0.000 title claims abstract description 35
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 33
- 239000010935 stainless steel Substances 0.000 title claims abstract description 33
- 238000000137 annealing Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 7
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 2
- 230000008021 deposition Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
く産業上の利用分野〉
本発明は生産能率を低下することなく、ステンレス鋼帯
の製品品質を向上させ、かっ歩留りを改善できるステン
レス鋼帯のａ続焼鈍酸洗方ｌ去およびその装置に関する
。[Detailed description of the invention] Industrial application field> The present invention provides a method for a-continuous annealing and pickling of stainless steel strips that can improve the product quality of stainless steel strips and improve the yield without reducing production efficiency. 1 and its apparatus.
く従来の技術〉
一般にステンレス製品は、その表面性状として高光沢で
かつキズの無いことが要求される。BACKGROUND ART Stainless steel products are generally required to have high gloss and scratch-free surface properties.
第２図にステンレス製品を製造するのに従来用いられて
いる焼鈍酸洗ラインの一概略図を示す。FIG. 2 shows a schematic diagram of an annealing and pickling line conventionally used to manufacture stainless steel products.
すなわちステンレスｍ帯１は、支持ロール３で保持され
、焼鈍炉２、冷却設備４そして酸洗槽１０へと運ばれる
。That is, the stainless steel m-band 1 is held by support rolls 3 and transported to an annealing furnace 2, a cooling facility 4, and a pickling tank 10.
従来の方法においても、ターンロールをなくした。 横
型炉を用いたり、支持ロール３の材質も疵のはいりにく
い非鉄製軟質ロールを使用したり等、工夫がなされてい
る．
さらに近年、連続焼鈍酸洗ライン
（ｃｏｎｔｉｎｕｏｕｓ Ａｎｎｅａｌｉｎｇ ａｎｄ
Ｐｉｃｋｌｉｎｇ Ｌｉｎｅ）の高生産性が要求され
るようになり、炉長が次第に長くなり、それにつれて酸
洗槽１０も長くなってきている。 そのため焼鈍炉２と
、この次工程である酸洗槽１０の間にプライドルロール
９を設置することが多くなってきている。Even in the conventional method, turn rolls were eliminated. Efforts have been made such as using a horizontal furnace and using a non-ferrous soft roll that is less prone to scratches as the material for the support roll 3. Furthermore, in recent years, continuous annealing and pickling lines have been developed.
As high productivity of the pickling line (pickling line) is required, the length of the furnace is gradually becoming longer, and the length of the pickling tank 10 is also becoming longer. For this reason, a priddle roll 9 is increasingly installed between the annealing furnace 2 and the pickling tank 10, which is the next step.
これは長大な焼鈍炉と酸洗槽に対して各々に最通な張力
を銅帯に付加することで、安定した通板を達成するため
である。This is to achieve stable threading by applying sufficient tension to the copper strip in each of the long annealing furnace and pickling tank.
第３図にこの例の概略図を示す。FIG. 3 shows a schematic diagram of this example.
く発明が解決しようとする問題点〉
このプライドルロール９を設置した場合、焼鈍炉２にて
ステンレス鋼帯１の表面に生成したスケールがプライド
ルロール表面に付着し、このためにステンレス鋼”ＩＩ
ＦＩに疵を発生させることがわかった。[Problems to be Solved by the Invention] When this Prydle roll 9 is installed, the scale generated on the surface of the stainless steel strip 1 in the annealing furnace 2 adheres to the surface of the Prydle roll, and as a result, the stainless steel "II"
It was found that it caused flaws in FI.
このスケールについて調査したところ、ステンレス鋼帯
と良く密着した酸化度の低い（ＣｒｘＯｙでクロム酸化
物を表わした場合、Ｙ／Ｘがおよそ４以下）スケールと
、その外側にある酸化が進んだ（酸化度が４をこえてい
る）ボーラスで、かつ剥離しやすいスケールとから成り
立っていることが判明した。 更にプライドルロール９
に付着しているスケール成分を調べたところ、酸化度の
高いスケールであることがわかり、上記のボーラスで剥
離しやすいスケール部がプライドルロール９に付着し、
疵の原因となっていることがわかった。When we investigated this scale, we found that there was a scale with a low degree of oxidation (Y/X is about 4 or less when chromium oxide is represented by CrxOy) that adhered well to the stainless steel strip, and a scale that was oxidized on the outside (Y/X is approximately 4 or less). It was found that the scale consists of a bolus (with a degree of over 4) and a scale that is easily peeled off. More pride roll 9
When the scale component adhering to the roll was examined, it was found that it was highly oxidized scale, and the scale part that was easily peeled off by the bolus was attached to the pridle roll 9.
It was found that this was the cause of the crack.
〈課題を解決するための手段〉
そこで、プライドルロール以前でスケールを除去する必
要があり、この目的を達成するためにブラシ研摩を施し
たが、
■銅帯の冷却を十分に行なわないと研摩ブラシが溶けて
銅帯に焼付き、それがプライドルロールに付着して逆効
果となる。<Means for solving the problem> Therefore, it was necessary to remove the scale before the priddle roll, and brush polishing was performed to achieve this purpose, but ■ If the copper strip is not cooled sufficiently, the polishing brush melts and burns onto the copper strip, which then adheres to the pridle roll and has the opposite effect.
■銅帯と密着したスケール層まで除去するため効率が悪
く、無駄が多いことがわかった。■It was found that the efficiency was low and there was a lot of waste because it removed even the scale layer that was in close contact with the copper strip.
そこでプライドルロールには付着しないステンレス鋼帯
と良く密着した酸化度の低いスケール層は残し、疵の原
因となる剥離しやすい酸化度の高い一番外側のスケール
層だけ除去する方法を調査したところ、水洗槽中に高温
のスケール付き鋼帯を入れることにより、その時に発生
する蒸気により、外側の剥離しやすいスケール分だけ除
去でき、プライドルロールに付着するスケールが減少す
ることがわかった。Therefore, we investigated a method of removing only the outermost scale layer with a high oxidation degree, which easily peels off and causes scratches, while leaving the low-oxidation scale layer that adheres well to the stainless steel strip, which does not adhere to the Prydle roll. It has been found that by placing a high-temperature scaled steel strip in a water washing tank, the steam generated at that time can remove only the scale on the outside that is easy to peel off, reducing the amount of scale that adheres to the priddle roll.
そこで、本発明によれば、焼鈍炉、冷却設備、プライド
ルロールおよび酸洗槽を有する酸洗ラインにおいて、ス
テンレス鋼帯を洗浄するに際し、
前記冷却設備で１００℃以上に冷却したステンレス鋼板
を、前記冷却設備とプライドルロールとの間において水
洗することを特徴とするステンレス鋼帯の連続焼鈍酸洗
方７去が提供される。Therefore, according to the present invention, when cleaning a stainless steel strip in a pickling line having an annealing furnace, a cooling equipment, a priddle roll, and a pickling tank, the stainless steel plate cooled to 100° C. or higher in the cooling equipment is A method for continuous annealing and pickling of stainless steel strip is provided, which is characterized by water rinsing between a cooling facility and a priddle roll.
また、本発明によれば、焼鈍炉、冷却設備、プライドル
ロールおよび酸洗槽を有する酸洗ラインにおいて、
前記冷却設備とプライドルロールとの間に水洗槽を設け
てなることを特徴とするステンレス鋼帯の連続焼鈍酸洗
装置が提供される。Further, according to the present invention, in a pickling line having an annealing furnace, a cooling equipment, a pridle roll, and a pickling tank, a stainless steel is characterized in that a washing tank is provided between the cooling equipment and the pridle roll. An apparatus for continuous annealing and pickling of strips is provided.
さらに前記水洗槽内に洗浄用ブラシを設けるのがよい。Furthermore, it is preferable to provide a cleaning brush in the washing tank.
以下、本発明について詳細に説明する。The present invention will be explained in detail below.
本発明の連続焼鈍酸洗装置の概略図を第１図に示す。A schematic diagram of the continuous annealing and pickling apparatus of the present invention is shown in FIG.
装置の構成は、第２図および第３図に示したと同様に、
ステンレス鋼帯１は、焼鈍炉２で所定の熱処理を施した
後、支持ロール３を伝って、冷却設備４で急冷される。The configuration of the device is similar to that shown in FIGS. 2 and 3.
After the stainless steel strip 1 is subjected to a predetermined heat treatment in an annealing furnace 2, it passes through a support roll 3 and is rapidly cooled in a cooling facility 4.
冷却されたステンレスｔｊＡｉｌは、本発明の構成要
件である水洗槽５中に浸漬ロール６によって浸漬させ、
蒸気発生を伴なった水洗を行なう。The cooled stainless steel tjAil is immersed by a dipping roll 6 into a washing tank 5, which is a component of the present invention, and
Wash with water accompanied by steam generation.
これにより、前述の酸化度の高い！ｌＩｌｌしやすいス
ケールを容易に除去することができる。This results in the aforementioned high degree of oxidation! It is possible to easily remove scales that are susceptible to lIll.
ステンレス！ｔ１は、水洗４！５の出側に洗浄ブラシ７
を付け、ブラシ研摩を施すと酸化度の高い外側のスケー
ル層が除去され、さらに効果が高まる。stainless! t1 is the cleaning brush 7 on the outlet side of the water wash 4!5.
If you apply and brush polish, the highly oxidized outer scale layer will be removed, further increasing the effectiveness.
これにより、プライドルロール表面へのスケール付着は
激減する。As a result, scale adhesion to the surface of the Prydle roll is drastically reduced.
このステンレス鋼帯１は、このあと酸洗槽１０に入り、
脱スケールを完了する。This stainless steel strip 1 then enters a pickling tank 10,
Complete descaling.
本発明において、ステンレス鋼帯を水洗槽に入れる際、
銅帯の温度は１００℃以上が好ましい。 １００℃未
満でもスケール除去は可能ではあるが、蒸気発生はほと
んどないため、その除去効果は劣る。In the present invention, when placing the stainless steel strip in the washing tank,
The temperature of the copper strip is preferably 100°C or higher. Although scale removal is possible at temperatures below 100° C., the removal effect is poor because almost no steam is generated.
また、水洗槽出側の洗浄ブラシは一般的なものを用いる
ことができ、例えばナイロン製、ボリブロピレン製等が
例示される。Further, the cleaning brush on the outlet side of the washing tank may be a common one, such as one made of nylon or polypropylene.
また、用いる水洗槽は、一般的に用いられるものでよく
、クエンチタイプ、スプレータイプのいずれでもよい。Further, the water washing tank used may be a commonly used one, and may be either a quench type or a spray type.
く実施例〉
次に本発明を実施例に基づいて具体的に説明するが、本
発明はこれらに限定されるものではない。EXAMPLES Next, the present invention will be specifically explained based on Examples, but the present invention is not limited thereto.
（実施例１）
本発明の実施例に用いた連続焼鈍酸洗装置の構成を、第
１図を用いて説明する。(Example 1) The configuration of a continuous annealing and pickling apparatus used in an example of the present invention will be explained using FIG. 1.
ステンレス鋼帯（ＳＵＳ３０４、１．０ｍｍ厚）を、炉
長４５ｍの焼鈍炉２で焼鈍し、アスベスト製の支持ロー
ル３で冷却設備４に送った。 この冷却設ｍ４は長さ１
５ｍを有し、ステンレス鋼帯は、グラファイト製支持ロ
ール３ｂで本発明の構成要件である水張りした全長５ｍ
のクエンチタンクからなる水洗槽５に移され、ここで板
温１３０℃のステンレス！ｇｌｌＦ２を冷却、水洗した
。 この時用いる浸漬ロール６はゴム製である． この
あと、ナイロン製の洗浄ブラシ７で洗浄し、リンガーロ
ール８でワイビングされた。A stainless steel strip (SUS304, 1.0 mm thick) was annealed in an annealing furnace 2 with a furnace length of 45 m, and sent to a cooling facility 4 using an asbestos support roll 3. This cooling installation m4 has a length of 1
The stainless steel strip has a total length of 5 m filled with water, which is a component of the present invention, with a graphite support roll 3b.
The stainless steel plate is transferred to the washing tank 5, which consists of a quench tank, where the plate temperature is 130℃! gllF2 was cooled and washed with water. The dipping roll 6 used at this time is made of rubber. Thereafter, it was cleaned with a nylon cleaning brush 7 and wiped with a ringer roll 8.
その後さらに、３本駆動のプライドルロール９を通り、
ライン張力を焼鈍炉０ ． ４ ｋｇ／ｍｍ’、酸洗
槽１ ． ２ ｋｇ／ｍｍ２にコントロールしている
。After that, it passes through three driven priddle rolls 9,
Line tension in annealing furnace 0. 4 kg/mm', pickling tank 1. It is controlled at 2 kg/mm2.
なお、プライドルロール９表面の材質はネオプレン、ロ
ール径は１２００ｍｍφを用′いた。The surface material of the Priddle roll 9 was neoprene, and the roll diameter was 1200 mmφ.
以上に示した設備を用い、水洗槽５の入側でステンレス
鋼帯の温度を変えた場合のプライドルロールの汚れ具合
を調べ、その結果を第４図に示す。 また、洗浄ブラシ
を用いた場合と用いなかった場合のプライドルロールの
汚れ具合のちがいも同図に示す．
第４図でプライドルロール汚れは白い紙をロール表面に
一定時間かつ一定圧力で押し付けたときの汚れ具合につ
いて色の濃淡を限界見本との比較で表わし、従来法の結
果を１．０として相対的に表現したものである。Using the equipment described above, the degree of contamination of the priddle roll was investigated when the temperature of the stainless steel strip was varied on the inlet side of the washing tank 5, and the results are shown in FIG. The figure also shows the difference in the degree of dirt on the Prydle roll when a cleaning brush was used and when it was not used. In Figure 4, Prydle roll stains are expressed by comparing the color shading with a limit sample when white paper is pressed against the roll surface for a certain period of time and with a certain pressure, and the result of the conventional method is set as 1.0. It is expressed in
また、これらのプライドルロールでの疵発生率について
も最終製品での歩留りによって従来のものと比較し、第
５図に示す。Furthermore, the flaw occurrence rate of these pre-dol rolls was compared with the conventional one based on the yield of the final product, and is shown in FIG.
く発明の効果〉
本発明により、プライドルロールへのスケール付着がな
くなり、ここでの疵発生が激減した。Effects of the Invention> According to the present invention, scale adhesion to the Prydle roll is eliminated, and the occurrence of defects therein is drastically reduced.
さらに、プライドルロール清掃のためのライン休止が不
必要となりライン稼動率が大幅に向上した。Furthermore, there is no need to stop the line for cleaning the priddle rolls, significantly improving line operation rates.
第１図は、本発明のステンレス鋼帯の連続焼鈍酸洗装置
の一例を示す概略図である。
第２図は、従来のステンレス鋼帯の連続焼鈍酸洗装置の
一例を示す概略図である。
第３図は、従来のその他のステンレスｍｉの連続焼鈍酸
洗装置の一例を示す概略図である．
第４図は、本発明の実施例において、本発明法と従来法
とを用いて焼鈍酸洗した際のプライドルロールの汚れを
比較したグラフである。
第５図は、本発明の実施例において、本発明法と従来法
とを用いて、焼鈍酸洗した際のプライドルロールの疵発
生率を比較したグラフである．
８・・・リンガーロール、
９・・・プライドルロール、
１０・・・酸洗槽、
３ｂ・・・支持ロール
符号の説明
１・・・ステンレス鋼帯、
２・・・焼鈍炉、
３・・・支持ロール、
４・・・冷却設備、
５・・・水洗槽、
６・・・浸漬ロール、
７・・・洗浄ブラシ、
ＦＩＧ，１
ＦＩＧ．４
ＦＩＧ．２
３
ＦＩＧ．３FIG. 1 is a schematic diagram showing an example of a continuous annealing and pickling apparatus for stainless steel strip according to the present invention. FIG. 2 is a schematic diagram showing an example of a conventional continuous annealing and pickling apparatus for stainless steel strips. FIG. 3 is a schematic diagram showing an example of another conventional continuous annealing and pickling apparatus for stainless steel. FIG. 4 is a graph comparing the stains on the pridle rolls when annealing and pickling were performed using the method of the present invention and the conventional method in Examples of the present invention. FIG. 5 is a graph comparing the flaw occurrence rate of pridle rolls when annealing and pickling were performed using the method of the present invention and the conventional method in an example of the present invention. 8... Ringer roll, 9... Prydle roll, 10... Pickling tank, 3b... Support roll code explanation 1... Stainless steel strip, 2... Annealing furnace, 3... Support roll, 4... Cooling equipment, 5... Washing tank, 6... Soaking roll, 7... Washing brush, FIG. 1 FIG. 4 FIG. 2 3 FIG. 3
Claims (3)
槽を有する酸洗ラインにおいて、ステンレス鋼帯を洗浄
するに際し、 前記冷却設備で１００℃以上に冷却したステンレス鋼板
を、前記冷却設備とブライドルロールとの間において水
洗することを特徴とするステンレス鋼帯の連続焼鈍酸洗
方法。(1) When cleaning stainless steel strips in a pickling line that has an annealing furnace, cooling equipment, bridle rolls, and a pickling tank, the stainless steel sheet that has been cooled to 100°C or higher in the cooling equipment is transferred to the cooling equipment and the bridle roll. A method for continuous annealing and pickling of stainless steel strips, characterized by washing with water between.
槽を有する酸洗ラインにおいて、 前記冷却設備とブライドルロールとの間に水洗槽を設け
てなることを特徴とするステンレス鋼帯の連続焼鈍酸洗
装置。(2) A pickling line having an annealing furnace, a cooling facility, a bridle roll, and a pickling tank, characterized in that a water washing tank is provided between the cooling facility and the bridle roll. Washing equipment.
記載のステンレス鋼帯の連続焼鈍酸洗装置。(3) The continuous annealing and pickling apparatus for stainless steel strips according to claim 2, wherein a cleaning brush is provided in the washing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15704289A JPH0324286A (en) | 1989-06-20 | 1989-06-20 | Method and device for continuously annealing and pickling band stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15704289A JPH0324286A (en) | 1989-06-20 | 1989-06-20 | Method and device for continuously annealing and pickling band stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324286A true JPH0324286A (en) | 1991-02-01 |
Family
ID=15640924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15704289A Pending JPH0324286A (en) | 1989-06-20 | 1989-06-20 | Method and device for continuously annealing and pickling band stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324286A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04311531A (en) * | 1991-04-09 | 1992-11-04 | Mitsubishi Heavy Ind Ltd | Annealing and pickling equipment for stainless steel sheet |
| KR20020054413A (en) * | 2000-12-28 | 2002-07-08 | 이구택 | Compact Pickling Process With Deoxygenated Furnace and Cooling Roll |
-
1989
- 1989-06-20 JP JP15704289A patent/JPH0324286A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04311531A (en) * | 1991-04-09 | 1992-11-04 | Mitsubishi Heavy Ind Ltd | Annealing and pickling equipment for stainless steel sheet |
| KR20020054413A (en) * | 2000-12-28 | 2002-07-08 | 이구택 | Compact Pickling Process With Deoxygenated Furnace and Cooling Roll |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3695063B2 (en) | Manufacturing method of stainless steel strip for clad material | |
| JPH0324286A (en) | Method and device for continuously annealing and pickling band stainless steel | |
| JPH1094817A (en) | Method for mechanically descaling hot rolled steel strip whose lubricity is improved | |
| JP2004306077A (en) | Manufacturing method of stainless steel strip | |
| JPH01273607A (en) | Method and device for processing hot rolled alloy steel strip | |
| JP2786388B2 (en) | Manufacturing method and manufacturing equipment for stainless abrasive products | |
| JPH07122151B2 (en) | Method for producing stainless steel strip for chemical coloring | |
| JPH0440433B2 (en) | ||
| JPH03158483A (en) | Continuous annealing and pickling equipment for cold rolled stainless steel strip | |
| JP2796214B2 (en) | Discoloration prevention treatment method for copper and copper alloy | |
| JPS5810973B2 (en) | Manufacturing method of plated steel wire | |
| JPH062177A (en) | Method and apparatus for continuously annealing and picking cold-rolled stainless steel sheet | |
| JPH0364419A (en) | Method for continuously annealing cold rolled stainless steel strip | |
| JPH0517827A (en) | Annealing and descaling method for stainless steel strip | |
| JPH11156427A (en) | Descaling method for hot rolled plate | |
| JP3879567B2 (en) | Method for suppressing local stain of cold rolled steel sheet and cleaning or water cooling equipment | |
| JPH0612467U (en) | Continuous pickling line for strips | |
| JPS62252607A (en) | Descaling device | |
| JPH09164416A (en) | Method and equipment for descaling by rolling | |
| JPH05302190A (en) | Method and equipment for cleaning dummy coil in continuous annealing line | |
| JPH0472019A (en) | Method and apparatus for continuously annealing stainless steel strip | |
| JPS5893595A (en) | Manufacture of welding wire | |
| JPH02277725A (en) | Continuous annealing furnace for cold-rolled stainless steel strip | |
| JPS5858408B2 (en) | The most important part of the sleeve is the first part of the sleeve. | |
| JP2578462B2 (en) | Heat treatment method for metal or alloy |