JP2665028B2 - Method for imparting gloss to metal plate surface - Google Patents
Method for imparting gloss to metal plate surfaceInfo
- Publication number
- JP2665028B2 JP2665028B2 JP2182835A JP18283590A JP2665028B2 JP 2665028 B2 JP2665028 B2 JP 2665028B2 JP 2182835 A JP2182835 A JP 2182835A JP 18283590 A JP18283590 A JP 18283590A JP 2665028 B2 JP2665028 B2 JP 2665028B2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- gloss
- metal
- roll
- width direction
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/20—Slip
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、金属板を冷間圧延する際に該金属板の表面
光沢を向上させる方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for improving the surface gloss of a metal plate when cold rolling the metal plate.
＜従来の技術＞ 従来、例えばステンレス鋼板金属板の表面光沢を向上
させる場合、潤滑油を低粘土とするか又はワークロール
を小径とするかして金属板とワークロールとの間に噛込
まれる油の量を減少させるこにより、該金属板とワーク
ロールとの間での金属接触部分を増す方法が広く採用さ
れている。<Conventional technology> Conventionally, for example, when improving the surface gloss of a stainless steel plate metal plate, the lubricating oil is made of low clay or the work roll is made small in diameter to be bitten between the metal plate and the work roll. A widely adopted method is to reduce the amount of oil to increase the metal contact portion between the metal plate and the work roll.
＜発明が解決しようとする課題＞ 前述した従来の方法では、金属板とワークロールとの
間の潤滑条件が悪化されることになるので、金属板とワ
ークロールとの間の摩擦係数が上がり、発熱による焼付
きなどの問題が発生し易くなる。このため、従来、金属
板の表面光沢を向上させようとする場合には圧延速度を
低くして操業する必要があった。<Problems to be Solved by the Invention> In the above-described conventional method, the lubrication condition between the metal plate and the work roll is deteriorated, so that the friction coefficient between the metal plate and the work roll is increased, Problems such as seizure due to heat generation are likely to occur. For this reason, conventionally, in order to improve the surface gloss of a metal plate, it was necessary to operate at a reduced rolling speed.
したがって、ステンレス鋼板、アルミニウム板など表
面光沢が重要な商品価値の要素となる製品を冷間圧延す
る業界では、生産性を上げつつ表面光沢を向上させるこ
とのできる圧延方法の確立が積年の課題であった。Therefore, in the industry of cold rolling of stainless steel sheets, aluminum sheets, and other products where surface gloss is an important factor in commercial value, establishing a rolling method that can improve surface gloss while increasing productivity has been a long-standing challenge. Met.
本発明はこのような事情に鑑み、生産性を低下させる
ことなく表面を向上させることができる金属板表面の光
沢付与方法を提供することを目的とする。In view of such circumstances, an object of the present invention is to provide a method for imparting gloss to a metal plate surface, which can improve the surface without reducing productivity.
＜課題を解決するための手段＞ 前記目的を達成する本発明に係る金属板表面の光沢付
与方法は、上下ロールに挾まれて走行する帯板状の金属
板へ冷間圧延加工する際に、光沢の付与が必要な金属板
面とこれに接触するロールとの間に板幅方向へのすべり
分力を与えて該金属板面の表層を板幅方向に剪断変形さ
せることにより、該金属板面の表面光沢を向上させるこ
とを特徴とする。<Means for Solving the Problems> The method for imparting gloss to the surface of a metal plate according to the present invention that achieves the above object is achieved by cold-rolling a strip-shaped metal plate running between upper and lower rolls. By applying a slip component in the width direction of the metal plate between the surface of the metal plate requiring gloss and the roll contacting the metal plate to shear the surface layer of the surface of the metal plate in the width direction of the metal plate, The surface gloss of the surface is improved.
＜作用＞ 一般に冷間圧延により金属板の表面光沢が向上する原
因は、金属板とワークロールとが金属接触し、表面粗さ
が小さくなって反射率が上がるためのと考えられる。一
方、金属板とワークロールとの間に潤滑油が存在する
と、潤滑油の静水圧で塑性加工された金属表面は凹凸の
多い面となり乱反射が支配的となって光沢が下がること
になる。従来、金属板の表面光沢を上げるために金属板
とワークロールとの間に噛込まれる潤滑油量を少なくし
潤滑条件を悪化させていたのはこのためである。<Function> In general, the reason why the surface gloss of a metal plate is improved by cold rolling is considered to be that the metal plate and the work roll come into metal contact with each other, the surface roughness is reduced, and the reflectance is increased. On the other hand, when lubricating oil is present between the metal plate and the work roll, the metal surface plastically processed by the hydrostatic pressure of the lubricating oil becomes a surface with many irregularities, and diffuse reflection becomes dominant and gloss is reduced. It is for this reason that the lubricating condition is conventionally deteriorated by reducing the amount of lubricating oil caught between the metal plate and the work roll in order to increase the surface gloss of the metal plate.
前記構成により、金属表面とロールとの間に板幅方向
へのずべり分力を与えて金属板面の表層を板幅方向に剪
断変形させるようにすると、金属板表面とロールとが金
属接触することになり、光沢度の高い金属表面が得られ
る。なお、このとき、金属板とワークロールとの間には
十分な量の潤滑油が存在していてもよい。With the above configuration, when a surface component of the metal sheet surface is sheared in the sheet width direction by applying a slip component in the sheet width direction between the metal surface and the roll, the metal sheet surface and the roll come into metal contact. As a result, a metal surface with high gloss is obtained. At this time, a sufficient amount of lubricating oil may be present between the metal plate and the work roll.
本発明の作用をさらに詳細に説明する。 The operation of the present invention will be described in more detail.
一般に、ワークロールの表面は研摩によって仕上げら
れるが、ロールを回転させながら砥石を押し付けて研摩
するため、砥粒により削りあと（研磨目）はロール表面
の円周方向に残る。そして、このような研摩目を持った
ロールで金属板を圧延する場合、研摩目の高さ及び油の
厚さによって金属板と接触する部分と接触しない部分と
に分かれ、この区分は通常は圧延開始から終了まであり
変化しない。Generally, the surface of a work roll is finished by polishing, but since the grindstone is pressed while the roll is being rotated and polished, the abrasive grains remain after polishing (grinding) in the circumferential direction of the roll surface. When a metal plate is rolled with a roll having such a polished surface, it is divided into a portion that is in contact with the metal plate and a portion that is not in contact with the metal plate depending on the height of the polished surface and the thickness of the oil. There is no change from start to end.
ところが、上述したように金属表面とロールとの間に
板幅方向のすべり分力与えて金属板を板面の表面を板幅
方向に剪断変形させるようにすると、研摩目の粗さの中
で高さの高い部分は板幅方向に移動した距離だけ金属表
面と接触することができる。したがって、これにより圧
延中の金属接触部分の割合を上げることができ、光沢度
の高い金属表面が得られる。However, as described above, when a sliding force is applied between the metal surface and the roll in the width direction of the metal to cause the surface of the metal plate to be sheared in the width direction of the metal, the roughness of the polishing The high part can contact the metal surface by the distance moved in the plate width direction. Therefore, this can increase the ratio of the metal contact portion during rolling, and can provide a metal surface with high gloss.
＜実 施 例＞ 以下、本発明を実施例に基づいて説明する。<Examples> Hereinafter, the present invention will be described based on examples.
第１図（ａ），（ｂ）には一実施例を概念的に示す説
明図である。両図中、１は金属板、2a,2bはこの金属板
１を挾む上下のワークロールを示す。ワークロール2a,2
bはそれぞれ水平面内にある回転軸を有すると共に、両
軸は金属板の搬送方向に直交する方向からそれぞれ角度
θたけ逆方向に傾いている。1 (a) and 1 (b) are explanatory views conceptually showing one embodiment. In both figures, 1 indicates a metal plate, and 2a and 2b indicate upper and lower work rolls sandwiching the metal plate 1. Work roll 2a, 2
Each of b has a rotation axis lying in a horizontal plane, and both axes are tilted in directions opposite to each other by an angle θ from a direction orthogonal to the transport direction of the metal plate.
このようなワークロール2a,2bで金属板１を冷間圧延
すると金属板１の進行速度vSの方向とワークロール2a,2
bの回転速度vRの方向との間が角度θとなり、金属板１
がワークロール2a,2bから開放される近傍では金属板１
の速度|vS|とワークロール2a,2bとの回転速度|vR|はほ
ぼ同じであるので、金属板１とワークロール2a,2bとの
間に板幅方向のずべり分力が発生し、金属板１の表層は
板幅方向に剪断変形を受けることになる。When the metal plate 1 is cold-rolled by such work rolls 2a, 2b, the direction of the traveling speed v S of the metal plate 1 and the work rolls 2a, 2
next between the angle θ between the direction of rotational speed v R of b, the metal plate 1
Metal plate 1 in the vicinity where is released from work rolls 2a and 2b
Speed | v S | and the rotation speed | v R | of the work rolls 2a and 2b are almost the same, so that a slip component in the plate width direction is generated between the metal plate 1 and the work rolls 2a and 2b. However, the surface layer of the metal plate 1 is subjected to shear deformation in the width direction of the plate.
上述したワークロール2a,2bを有する四段の試験圧延
機により圧延試験を行い、摩擦係数μ及び光沢度GSを側
定した。なお、ワークロール2a,2bは、径が260mm、表面
粗さが１μmRmax、角度θが0.7度であり、供試材として
厚さ0.5mmのSPCC（JIS G3141）を用い、潤滑油粘度も33
cSt（40℃）とし、圧下率30％とした。Work roll 2a above, performs rolling test by the four-stage test mill with 2b, and Gawajo the friction coefficient μ and glossiness G S. The work rolls 2a and 2b have a diameter of 260 mm, a surface roughness of 1 μmR max , an angle θ of 0.7 degrees, a 0.5 mm thick SPCC (JIS G3141) as a test material, and a lubricating oil viscosity of 33 mm.
cSt (40 ° C.) and a rolling reduction of 30%.
また、比較のため、角度θを０度とした場合について
も同様な圧延試験を行った。For comparison, a similar rolling test was performed for the case where the angle θ was set to 0 °.
これらの結果は第２図に示す。同図に示すように、摩
擦係数μは角度θが0.7度のときもほとんど変わらな
い。したがって、角度θを0.7度としても生産性を低下
させる必要はない。一方、光沢度は角度θを0.7度とし
た場合には圧延速度にかかわりなく高い値となってい
る。These results are shown in FIG. As shown in the figure, the friction coefficient μ hardly changes even when the angle θ is 0.7 degrees. Therefore, there is no need to lower the productivity even when the angle θ is 0.7 degrees. On the other hand, when the angle θ is 0.7 degrees, the glossiness is a high value irrespective of the rolling speed.
第３図は角度θが0.7度及び０度のときに圧延された
板の表面の拡大写真である。これらの写真から角度θが
0.7度の場合には板幅方向のすべり分力により表層が剪
断変形を起こし、平滑面が増加していることが観察さ
れ、このために光沢度が向上していることが分かる。FIG. 3 is an enlarged photograph of the surface of the plate rolled when the angle θ is 0.7 degree and 0 degree. From these pictures, the angle θ
In the case of 0.7 degrees, it is observed that the surface layer undergoes shear deformation due to the slip component force in the width direction of the plate, and the smooth surface is increased, which indicates that the glossiness is improved.
以上説明したように、本発明方法により金属板の表面
に光沢を付与する場合には、要するにロールと金属板と
が接触走行するときに、両者の間に板幅方向のずべりが
生じるようにすればよい。したがってこのためには、上
記実施例のように金属板の進行方向とワークロールの回
転方向とに角度をつける他、接触走行時に例えば金属板
の走行速度の1/100〜1/1000の範囲でロールを軸方向に
往復移動させるようにしてもよく、両方法を同時に実施
してもよい。As described above, when gloss is applied to the surface of a metal plate by the method of the present invention, when the roll and the metal plate are in contact with each other, slippage occurs in the width direction between the two. do it. Therefore, for this purpose, in addition to making an angle between the traveling direction of the metal plate and the rotation direction of the work roll as in the above embodiment, at the time of contact traveling, for example, in the range of 1/100 to 1/1000 of the traveling speed of the metal plate. The roll may be reciprocated in the axial direction, and both methods may be performed simultaneously.
また、ロールの回転方向を傾ける場合、上記実施例の
ように上下ロールを逆方向に傾ける他、同じ方向に傾け
てもよい。When the rotation direction of the rolls is inclined, the upper and lower rolls may be inclined in the opposite direction as in the above embodiment, or may be inclined in the same direction.
さらに、金属板の片面のみに光沢を付与する場合に
は、該片面側のロールのみを傾けるか、あるいは移動さ
せるかすればよく、また該ロールを傾けつつ移動させる
ようにしてもよい。Furthermore, when gloss is applied to only one side of the metal plate, only the roll on one side may be tilted or moved, or the roll may be moved while tilted.
＜発明の効果＞ 以上説明したように、本発明方法によると、金属板と
ロールとの間に板幅方向のすべりが生じるようにして光
沢度を向上させることができ、生産性を低下させる必要
がない。<Effects of the Invention> As described above, according to the method of the present invention, it is possible to improve the glossiness by causing a slip in the plate width direction between the metal plate and the roll, and to reduce the productivity. There is no.
第１図（ａ），（ｂ）は一実施例に係る光沢付与方法を
示す説明図、第２図は圧延試験の結果を示すグラフ、第
３図（ａ），（ｂ）はその圧延材表面の金属組織を示す
顕微鏡写真である。 図面中、 １は金属板、 2a,2bはワークロールである。1 (a) and 1 (b) are explanatory diagrams showing a gloss imparting method according to one embodiment, FIG. 2 is a graph showing a result of a rolling test, and FIGS. 3 (a) and 3 (b) are rolled materials thereof. It is a microscope picture which shows the metal structure of the surface. In the drawings, 1 is a metal plate, 2a and 2b are work rolls.
Claims (1)
属板へ冷間圧延加工する際に、光沢の付与が必要な金属
板面とこれに接触するロールとの間に板幅方向へのすべ
り分力を与えて該金属板面の表層を板幅方向に剪断変形
させることにより、該金属板面の表面光沢を向上させる
ことを特徴とする金属板表面の光沢付与方法。When cold rolling is performed on a strip-shaped metal plate running between upper and lower rolls, a width direction between a metal plate surface requiring gloss and a roll contacting the metal plate surface is required. A method for imparting gloss to the surface of a metal plate, the method comprising applying a slip component to the surface of the metal plate to cause the surface layer of the metal plate to undergo shear deformation in the width direction of the metal plate, thereby improving the surface gloss of the metal plate surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2182835A JP2665028B2 (en) | 1990-07-12 | 1990-07-12 | Method for imparting gloss to metal plate surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2182835A JP2665028B2 (en) | 1990-07-12 | 1990-07-12 | Method for imparting gloss to metal plate surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0471701A JPH0471701A (en) | 1992-03-06 |
| JP2665028B2 true JP2665028B2 (en) | 1997-10-22 |
Family
ID=16125299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2182835A Expired - Fee Related JP2665028B2 (en) | 1990-07-12 | 1990-07-12 | Method for imparting gloss to metal plate surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2665028B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0553480B1 (en) * | 1991-12-27 | 1996-03-13 | Hitachi, Ltd. | Rolling mill, rolling method and rolling mill system |
| JPH05337507A (en) * | 1992-06-04 | 1993-12-21 | Mitsubishi Heavy Ind Ltd | Roll cross type tandem rolling mill line |
| JP2778875B2 (en) * | 1992-06-04 | 1998-07-23 | 三菱重工業株式会社 | Roll cross tandem rolling mill row |
-
1990
- 1990-07-12 JP JP2182835A patent/JP2665028B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0471701A (en) | 1992-03-06 |
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