JP3303954B2 - Cold rolling method for stainless steel strip with excellent surface properties - Google Patents
Cold rolling method for stainless steel strip with excellent surface propertiesInfo
- Publication number
- JP3303954B2 JP3303954B2 JP29676794A JP29676794A JP3303954B2 JP 3303954 B2 JP3303954 B2 JP 3303954B2 JP 29676794 A JP29676794 A JP 29676794A JP 29676794 A JP29676794 A JP 29676794A JP 3303954 B2 JP3303954 B2 JP 3303954B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- cold rolling
- cold
- steel strip
- stainless 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.)
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Metal Rolling (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高い平滑性を有する表
面性状の優れたステンレス鋼帯を冷間圧延により得るた
めの方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for obtaining a stainless steel strip having high smoothness and excellent surface properties by cold rolling.
【０００２】[0002]
【従来の技術】ステンレス鋼の薄板製品として、ＪＩＳ
規格に規定されているＢＡ製品や２Ｂ製品あるいは研磨
製品等がある。これらの薄板製品用のステンレス冷延鋼
帯には高い平滑性を有する優れた表面性状が強く要望さ
れている。2. Description of the Related Art As a stainless steel sheet product, JIS
There are BA products, 2B products, and polished products specified in the standards. For these cold rolled stainless steel strips for sheet products, excellent surface properties having high smoothness are strongly demanded.
【０００３】従来、ステンレス鋼の冷間圧延板における
表面光沢の制御について油膜厚み当量を用いて整理する
ことが試みられてきた。すなわち、潤滑油の大気圧での
粘性係数をη0 、ロールおよび材料の入側速度をそれぞ
れＵ1 、Ｕ2 、かみ込み角をθ、材料の降伏応力をＹと
したときに、油膜厚み当量をｔd を次式で表し、表面光
沢との関係を整理していた。 ｔd ＝｛η0 ・（Ｕ1 ＋Ｕ2 ）｝／tan θ・Ｙ しかしながら、油膜厚み当量ｔd は、ロールおよび材料
の表面が極めて平滑である理想的状態の場合にロールバ
イト入り口の外側での潤滑油におけるレイノルズ方程式
を解析的に解いた結果導き出されたものであり、ロール
および材料の表面粗さが極めて小さい場合しか本来適用
できないものである。さらに、油膜厚み当量ｔd の式に
は圧延操業条件で直接的には把握し難いかみ込み角や材
料強度の項が含まれており、操業のパラメータとしては
実際上使用できない。Heretofore, attempts have been made to control the surface gloss of a stainless steel cold-rolled sheet by using an oil film thickness equivalent. That is, when the viscosity coefficient of the lubricating oil at atmospheric pressure is η 0 , the entrance speeds of the roll and the material are U 1 and U 2 , the biting angle is θ, and the yield stress of the material is Y, the oil film thickness equivalent the represents a t d by the following formula, it was to organize the relationship between surface gloss. t d = {η 0 · (U 1 + U 2 )} / tan θ · Y However, the oil film thickness equivalent t d is outside of the roll bite entrance in the ideal state where the surfaces of the roll and the material are extremely smooth. It is derived as a result of analytically solving the Reynolds equation in the lubricating oil of No. 1, and is originally applicable only when the surface roughness of the roll and the material is extremely small. Furthermore, the expression of the oil film thickness equivalent t d are included directly in the section corners and material strength biting hard to grasp in the rolling operation conditions, it can not be practically used as a parameter of the operation.
【０００４】一方、表面の光沢を向上させる方法とし
て、例えば特開平２−１７５００５号公報に開示されて
いるように、冷間圧延前において焼き付きを防止できる
程度の潤滑剤を塗布した予備圧延を行い、続く仕上冷間
圧延において最終の１乃至３パスのワークロールの表面
粗さの上限を規定し、表面凸凹を低減する方法がある。
しかしながら、この方法では冷間圧延板における表面粗
さをある程度小さくできるが、高平滑性を有する表面性
状を確保するには不十分であり、更なる改良を必要とし
ていた。[0004] On the other hand, as a method for improving the surface gloss, for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 2-175005, pre-rolling is performed by applying a lubricant enough to prevent seizure before cold rolling. In the subsequent finish cold rolling, there is a method in which the upper limit of the surface roughness of the final one to three work rolls is specified to reduce the surface roughness.
However, although this method can reduce the surface roughness of the cold-rolled sheet to some extent, it is not sufficient to secure surface properties having high smoothness, and further improvement is required.
【０００５】[0005]
【発明が解決しようとする課題】ステンレス鋼帯の高平
滑化を阻害する因子に、冷間圧延中に板表面に封入され
た潤滑油による表面凸凹の残留がある。表面凸凹生成の
原因には、熱間圧延鋼帯の表面凸凹、疵取り研削によっ
て生じる研削目、タンデム圧延などの中間圧延により形
成されるロール目やオイルピットなどがある。そこで、
本発明者等は、高い平滑性を有する表面性状の優れたス
テンレス鋼帯を得ることができる製造プロセスについ
て、前記の表面凸凹を効果的かつ効率的に軽減消失する
ための検討を行った。A factor that hinders high smoothness of a stainless steel strip is residual surface irregularities due to lubricating oil encapsulated in the sheet surface during cold rolling. Causes of the generation of the surface irregularities include surface irregularities of the hot-rolled steel strip, ground lines generated by flaw removal grinding, roll lines formed by intermediate rolling such as tandem rolling, and oil pits. Therefore,
The present inventors have studied on a manufacturing process capable of obtaining a stainless steel strip having high smoothness and excellent surface properties to effectively and efficiently reduce and eliminate the surface irregularities.
【０００６】本発明は、冷間圧延用の潤滑油が圧延前の
板材の表面凹み部に圧延中に封入されることなく排出さ
れる条件を確保するためのロールと材料の界面条件を明
確にするとともに、同条件を得るための高生産性冷間圧
延方法を提供することを目的とする。The present invention clarifies the interface condition between the roll and the material for ensuring the condition that the lubricating oil for cold rolling is discharged into the surface recess of the sheet material before rolling without being encapsulated during rolling. It is another object of the present invention to provide a high-productivity cold rolling method for obtaining the same conditions.
【０００７】[0007]
【課題を解決するための手段】本発明の表面性状に優れ
たステンレス鋼帯の冷間圧延方法は、鉱物系圧延油また
は水溶系圧延油を潤滑剤とし、冷間圧延前の表面粗さ
が、中心線平均粗さＲａで３．０μm 以下であるステン
レス鋼帯を冷間圧延する方法において、圧延ｉパス目の
ロールバイトにおける潤滑剤の滲み出し状態を表す指標
として第１式または第２式に示されるΔＥi を用い、前
記ΔＥi の１パス目と２パス目における平均値（ΔＥ1
＋ΔＥ2 ）／２が０．６０以下である条件で冷間圧延を
行うことを特徴とする。The cold rolling method for a stainless steel strip having excellent surface properties according to the present invention uses a mineral rolling oil or a water-soluble rolling oil as a lubricant and reduces the surface roughness before cold rolling. In a method of cold-rolling a stainless steel strip having a center line average roughness Ra of 3.0 μm or less, the first or second formula is used as an index indicating the state of lubricant bleeding in the roll bite at the i-th rolling pass. The average value (ΔE 1) of the ΔE i in the first pass and the second pass using ΔE i shown in FIG.
Cold rolling is performed under the condition that + ΔE 2 ) / 2 is 0.60 or less.
【数２】 (Equation 2)
【０００８】[0008]
【作用】以下、本発明の限定理由について説明する。本
発明者等は、圧延ｉパス目のロールバイトにおける潤滑
油の滲み出し状態を示す指標ΔＥi の圧延１パス目と２
パス目における平均値（（ΔＥ1 ＋ΔＥ2 ）／２）が
０．６０以下である条件で冷間圧延を行うことにより、
ＪＩＳ Ｚ８７４１で規定された光沢度Ｇｓ（４５゜）
を７５０％以上にすることができることを見出した。The reasons for limiting the present invention will be described below. The present inventors have determined that the index ΔE i indicating the state of oozing of the lubricating oil in the roll bite in the i-th rolling pass and the first and second rolling passes of the index ΔE i.
By performing cold rolling under the condition that the average value ((ΔE 1 + ΔE 2 ) / 2) at the pass is 0.60 or less,
Gloss (45 °) specified in JIS Z8741
Can be increased to 750% or more.
【０００９】ＳＵＳ３０４冷間圧延鋼帯を用いて、鉱物
系圧延油または水溶系圧延油を潤滑剤として圧延した場
合の圧延１パス目と２パス目におけるΔＥi の平均値と
各圧延油による冷間圧延後の表面光沢度を検討した結果
を図１に示す。図１から明らかなように、ΔＥi の平均
値が０．６０を超えると表面光沢度が７５０％未満に低
下することがわかる。また、図２に冷間圧延後に残留し
ている凹み欠陥の面積率を画像解析装置により測定した
結果を合わせて示しているが、ΔＥi の平均値が０．６
０を超えると凹み欠陥面積率が５％を超えており、表面
光沢度とよく対応していることがわかる。従って、圧延
１パス目と２パス目におけるΔＥi の平均値の範囲を
０．６０％以下とした。また、望ましい範囲は０．４０
％以下である。[0009] SUS304 cold using a rolled steel strip, cold by the average value and the rolling oil Delta] E i in the rolling the first pass and the second pass in the case of rolling mineral rolling oil or water-based rolling oil as a lubricant The result of examining the surface gloss after cold rolling is shown in FIG. As is clear from FIG. 1, when the average value of ΔE i exceeds 0.60, the surface gloss decreases to less than 750%. Moreover, although shown together results measured by an image analyzer and the area ratio of the dents defects remaining after cold rolling in Figure 2, the mean value of Delta] E i is 0.6
When it exceeds 0, the dent defect area ratio exceeds 5%, and it can be seen that it corresponds well to the surface glossiness. Therefore, the range of the average value of ΔE i in the first pass and the second pass of the rolling is set to 0.60% or less. A desirable range is 0.40.
% Or less.
【００１０】本発明者等は、冷間圧延前の原板の表面粗
さをＲａで３．０μｍ以下とすれば、上記の冷間圧延後
の表面光沢度が改善されることを見出した。ＳＵＳ３０
４冷間圧延鋼帯を用いて、鉱物系圧延油または水溶系圧
延油を潤滑剤として冷間圧延前の原板の表面粗さと冷間
圧延後の表面光沢度および表面凹み欠陥面積率を検討し
た結果を図３および図４に示す。この図から明らかなよ
うに、原板の表面粗さが中心線平均粗さでＲａで３．０
μｍ以下では、表面光沢度が７５０％以上で、また凹み
欠陥面積率が５％以下であることがわかる。従って、冷
間圧延前の原板の表面粗さはＲａで３．０μｍ以下とし
た。また、望ましい範囲は２．０μｍ以下である。The present inventors have found that if the surface roughness of the original sheet before the cold rolling is set to 3.0 μm or less in Ra, the surface glossiness after the above cold rolling is improved. SUS30
Using 4 cold-rolled steel strips, mineral rolling oil or aqueous rolling oil was used as a lubricant to examine the surface roughness of the original sheet before cold rolling, the surface glossiness after cold rolling, and the surface dent defect area ratio. The results are shown in FIGS. As is apparent from this figure, the surface roughness of the original plate was 3.0 in Ra at the center line average roughness.
It can be seen that when the thickness is not more than μm, the surface glossiness is 750% or more and the dent defect area ratio is 5% or less. Therefore, the surface roughness of the original sheet before cold rolling was set to 3.0 μm or less in Ra. A desirable range is 2.0 μm or less.
【００１１】冷間圧延での潤滑剤の滲み出しによる表面
凹み欠陥の軽減消失に関する作用および機構は、必ずし
も明確でないが、以下のように推定される。潤滑剤は、
冷間圧延前の材料の凹みによりロールバイト中に持ち込
まれるが、ロールと材料間に発生する静水圧によりロー
ルバイトから滲み出そうとする。そこで、潤滑剤がロー
ルバイトから滲み出すのに必要な時間Ｔｉ1 がロールバ
イト内の凹みの移動時間Ｔｉ2 より小さければ、凹みの
中の潤滑剤は滲み出して凹みは圧延荷重により押しつぶ
されて軽減され、これらの時間差が大きくなるほど顕著
に凹みの軽減が進行し、ついには消失すると考えられ
る。また、前者Ｔｉ1 の時間は、潤滑剤の粘性係数、ロ
ール粗さおよびロール径等で主に決定されるのに対し
て、後者Ｔｉ2 の時間は、圧延速度および圧下率等によ
り主に決定される。また、ワークロール半径が小さいと
潤滑剤の滲み出し距離が短くなり、滲み出しに必要な時
間Ｔｉ1 は小さくなるので、ワークロール半径は１００
mm以下が望ましい。The action and mechanism for reducing and eliminating surface dent defects due to the oozing out of lubricant during cold rolling are not necessarily clear, but are presumed as follows. The lubricant is
The material is brought into the roll bite due to the dent of the material before cold rolling, but tends to ooze out of the roll bite due to the hydrostatic pressure generated between the roll and the material. Therefore, if the time Ti 1 required for lubricant oozes from the roll bite is smaller than the travel time Ti 2 indentations in the roll bite, the lubricant in the recess is recessed by oozing being crushed by the rolling load It is considered that the dents are remarkably reduced as the time difference increases, and eventually the dents disappear. The time of the former Ti 1 is mainly determined by the viscosity coefficient of the lubricant, the roll roughness, the roll diameter, and the like, whereas the time of the latter Ti 2 is mainly determined by the rolling speed, the rolling reduction, and the like. Is done. The distance exuded a work roll having a small radius of the lubricant is short, the time Ti 1 becomes smaller required bleeding, the work roll radius 100
mm or less is desirable.
【００１２】[0012]
【実施例】表１、２に本発明例、比較例および従来例を
示す。鋼種としてはＳＵＳ３０４、ＳＵＳ４３０を用い
た。素材は、熱間圧延鋼帯、冷間圧延鋼帯および薄肉連
続鋳片を用いた。ここで熱間圧延鋼帯とは、連続鋳造や
薄肉スラブ鋳造により得られた厚みが２０〜３００mm程
度の鋳片をタンデム式熱間圧延機やリバース式熱間圧延
機などにより熱間圧延したもの、あるいは更に焼鈍した
ものである。冷間圧延鋼帯とは、タンデム式冷間圧延機
やリバース式冷間圧延機により冷間圧延したもの、ある
いは更に焼鈍したものである。薄肉連続鋳片とは双ロー
ル式ストリップキャスティング装置等により得られた厚
みが１０mm以下の鋳片、あるいは更に熱間で圧延を行っ
たものである。表面スケールのある素材は、冷間圧延前
に酸洗等によりデスケールを実施している。冷間圧延の
後に、ＳＵＳ３０４は１０８０℃×１０秒の光輝焼鈍を
実施した後、伸び率０．７％の無潤滑調質圧延を行って
製品板とした。また、ＳＵＳ４３０は８５０℃×１０秒
の光輝焼鈍を実施した後、伸び率１．５％の無潤滑調質
圧延を行って製品板とした。EXAMPLES Tables 1 and 2 show examples of the present invention, comparative examples and conventional examples. SUS304 and SUS430 were used as steel types. The raw material used was a hot-rolled steel strip, a cold-rolled steel strip, and a thin continuous slab. Here, the hot-rolled steel strip is a strip obtained by continuous casting or thin-wall slab casting and having a thickness of about 20 to 300 mm, which is hot-rolled by a tandem hot rolling mill, a reverse hot rolling mill, or the like. Or further annealed. The cold-rolled steel strip is one that has been cold-rolled by a tandem-type cold rolling mill or a reverse-type cold rolling mill, or has been further annealed. The thin continuous slab is a slab having a thickness of 10 mm or less obtained by a twin-roll strip casting apparatus or the like, or a hot-rolled slab. A material having a surface scale is descaled by pickling or the like before cold rolling. After cold rolling, SUS304 was subjected to bright annealing at 1080 ° C. for 10 seconds, and then subjected to lubrication-free temper rolling at an elongation of 0.7% to obtain a product sheet. Further, SUS430 was subjected to bright annealing at 850 ° C. × 10 seconds, and then subjected to lubrication-free temper rolling at an elongation of 1.5% to obtain a product sheet.
【００１３】潤滑剤の粘度としては、ロールバイトにお
ける界面温度での値が望ましいが、圧延による加工発熱
と摩擦発熱および潤滑剤自体の冷却効果などによりロー
ルバイトでの界面温度として１００℃前後になっている
と考えられるので、１００℃における粘度の値を採用し
た。The viscosity of the lubricant is preferably the value at the interface temperature of the roll tool. However, the interface temperature of the roll tool becomes about 100 ° C. due to the heat generated by rolling and the heat generated by friction and the cooling effect of the lubricant itself. Therefore, the value of the viscosity at 100 ° C. was adopted.
【００１４】冷間圧延後の表面について、表面光沢度と
表面凹み欠陥面積率を評価した。表面光沢度は、ＪＩＳ
Ｚ８７４１に基づいてＧＳ４５゜（Ｌ、Ｃ方向の平均
値）を測定した。表面凹み欠陥面積率は、光学顕微鏡に
より倍率２００倍に拡大した表面を画像解析装置により
測定した。調質圧延後の製品板について表面光沢ランク
を標準サンプルによる目視観察にて評価し、Ａ〜Ｅの５
段階に分類した。The surface after cold rolling was evaluated for surface glossiness and surface dent defect area ratio. Surface gloss is JIS
GS45 ° (average value in L and C directions) was measured based on Z8741. The surface dent defect area ratio was measured by an image analyzer on a surface magnified 200 times with an optical microscope. The surface gloss rank of the product plate after the temper rolling was evaluated by visual observation using a standard sample.
Classified into stages.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】[0017]
【表３】 [Table 3]
【００１８】[0018]
【表４】 [Table 4]
【００１９】[0019]
【表５】 [Table 5]
【００２０】[0020]
【表６】 [Table 6]
【００２１】[0021]
【表７】 [Table 7]
【００２２】[0022]
【表８】 [Table 8]
【００２３】本発明例は、比較例および従来例に比べて
冷間圧延後の表面光沢度が８００％以上となり、表面凹
み欠陥面積率が５％以下で良好な表面を有しており、製
品板の表面光沢ランクもＢ以上と優れた表面である。The present invention example has a good surface with a surface glossiness after cold rolling of 800% or more and a surface dent defect area ratio of 5% or less as compared with the comparative example and the conventional example. The surface has an excellent surface gloss rank of B or more.
【００２４】[0024]
【発明の効果】以上のことから明らかな如く、本発明に
よれば、冷延板の光沢度が７５０％以上で表面凹み欠陥
率が５％以下の高光沢表面性状を有するステンレス鋼帯
が得られる。As is evident from the above, according to the present invention, a stainless steel strip having a high gloss surface property in which the cold rolled sheet has a glossiness of 750% or more and a surface dent defect rate of 5% or less is obtained. Can be
【図１】ＳＵＳ３０４冷間圧延鋼帯（Ｒａ＝０．３５μ
ｍ）を原板として、鉱物系圧延油または水溶系圧延油を
潤滑剤として圧延した場合の圧延１パス目と２パス目に
おけるΔＥi の平均値と各圧延油による冷間圧延後の表
面光沢度との関係を示す図である。FIG. 1 SUS304 cold rolled steel strip (Ra = 0.35μ)
m) as an original plate, the average value of ΔE i in the first and second passes of rolling when a mineral rolling oil or a water-soluble rolling oil is used as a lubricant, and the surface gloss after cold rolling with each rolling oil FIG.
【図２】ＳＵＳ３０４冷間圧延鋼帯（Ｒａ＝０．３５μ
ｍ）を原板として、鉱物系圧延油または水溶系圧延油を
潤滑剤として圧延した場合の圧延１パス目と２パス目に
おけるΔＥi の平均値と各圧延油による冷間圧延後の表
面凹み欠陥面積率との関係を示す図である。FIG. 2 SUS304 cold-rolled steel strip (Ra = 0.35μ)
m) as an original plate, and the average value of ΔE i in the first and second passes of rolling when a mineral rolling oil or a water-soluble rolling oil is used as a lubricant, and a surface dent defect after cold rolling with each rolling oil. It is a figure which shows the relationship with an area ratio.
【図３】ＳＵＳ３０４冷間圧延鋼帯を原板として、鉱物
系圧延油または水溶系圧延油を潤滑剤として圧延した場
合の冷間圧延前の原板の表面粗さと冷間圧延後の表面光
沢度との関係を示す図である。FIG. 3 shows the surface roughness of the original sheet before cold rolling and the surface gloss after cold rolling when the SUS304 cold-rolled steel strip is used as an original sheet and mineral rolling oil or aqueous rolling oil is used as a lubricant. FIG.
【図４】ＳＵＳ３０４冷間圧延鋼帯を原板として、鉱物
系圧延油または水溶系圧延油を潤滑剤として圧延した場
合の冷間圧延前の原板の表面粗さと冷間圧延後の表面凹
み欠陥面積率との関係を示す図である。FIG. 4 shows the surface roughness of the original sheet before cold rolling and the surface dent defect area after cold rolling when SUS304 cold-rolled steel strip is used as an original sheet and mineral rolling oil or aqueous rolling oil is used as a lubricant. It is a figure which shows the relationship with a rate.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 梁井 和博 山口県光市大字島田3434番地 新日本製 鐵株式会社 光製鐵所内 (56)参考文献 特開 平２−284704（ＪＰ，Ａ) 特開 平４−52005（ＪＰ，Ａ) 特開 平４−55003（ＪＰ，Ａ) 特開 平４−91801（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B21B 1/00 - 11/00 B21B 45/02 310 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuhiro Yanai 3434 Shimada, Hikari-shi, Yamaguchi Prefecture Inside Nippon Steel Corporation Hikari Works (56) References JP-A-2-284704 (JP, A) JP JP-A-4-52005 (JP, A) JP-A-4-55003 (JP, A) JP-A-4-91801 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B21B 1 / 00-11/00 B21B 45/02 310
Claims (1)
剤とし、冷間圧延前の表面粗さが、中心線平均粗さＲａ
で３．０μm 以下であるステンレス鋼帯を冷間圧延する
方法において、圧延ｉパス目のロールバイトにおける潤
滑剤の滲み出し状態を表す指標として第１式または第２
式に示されるΔＥi を用い、前記ΔＥi の１パス目と２
パス目における平均値（ΔＥ1 ＋ΔＥ2 ）／２が０．６
０以下である条件で冷間圧延を行うことを特徴とする表
面性状に優れたステンレス鋼帯の冷間圧延方法。 【数１】 1. A mineral rolling oil or a water-soluble rolling oil is used as a lubricant, and the surface roughness before cold rolling is reduced to a center line average roughness Ra.
In the method of cold-rolling a stainless steel strip having a thickness of 3.0 μm or less, the first formula or the second formula is used as an index representing the state of bleeding of the lubricant in the roll bite at the i-th rolling pass.
Using ΔE i shown in the equation, the first pass of ΔE i and the second pass
The average value (ΔE 1 + ΔE 2 ) / 2 at the pass is 0.6
A cold rolling method for a stainless steel strip having excellent surface properties, wherein cold rolling is performed under a condition of 0 or less. (Equation 1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29676794A JP3303954B2 (en) | 1994-11-30 | 1994-11-30 | Cold rolling method for stainless steel strip with excellent surface properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29676794A JP3303954B2 (en) | 1994-11-30 | 1994-11-30 | Cold rolling method for stainless steel strip with excellent surface properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08155502A JPH08155502A (en) | 1996-06-18 |
| JP3303954B2 true JP3303954B2 (en) | 2002-07-22 |
Family
ID=17837868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29676794A Expired - Lifetime JP3303954B2 (en) | 1994-11-30 | 1994-11-30 | Cold rolling method for stainless steel strip with excellent surface properties |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3303954B2 (en) |
-
1994
- 1994-11-30 JP JP29676794A patent/JP3303954B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08155502A (en) | 1996-06-18 |
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