JP2708942B2 - Steel plate with excellent paint clarity and press workability - Google Patents

Steel plate with excellent paint clarity and press workability

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Publication number
JP2708942B2
JP2708942B2 JP2207950A JP20795090A JP2708942B2 JP 2708942 B2 JP2708942 B2 JP 2708942B2 JP 2207950 A JP2207950 A JP 2207950A JP 20795090 A JP20795090 A JP 20795090A JP 2708942 B2 JP2708942 B2 JP 2708942B2
Authority
JP
Japan
Prior art keywords
steel sheet
roll
rolling
steel plate
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.)
Expired - Lifetime
Application number
JP2207950A
Other languages
Japanese (ja)
Other versions
JPH0491802A (en
Inventor
雅謙 竹本
徹也 西浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP2207950A priority Critical patent/JP2708942B2/en
Publication of JPH0491802A publication Critical patent/JPH0491802A/en
Application granted granted Critical
Publication of JP2708942B2 publication Critical patent/JP2708942B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B1/227—Surface roughening or texturing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は塗装鮮映性及びプレス加工性の優れた鋼板に
関する。Description: TECHNICAL FIELD The present invention relates to a steel sheet having excellent paint clarity and press workability.

（従来の技術） 自動車や家電製品に用いられる鋼板に塗装鮮映性が求
められ、商品価値を高めることが知られているが、従来
の塗装鮮映性の向上は、塗料又は塗装方法の改善が重視
されてきた。(Prior art) Steel plates used in automobiles and home electric appliances are required to have sharpness in painting, and it is known that they enhance the commercial value. Has been emphasized.

一方自動車用鋼板では塗料の密着性及びプレス加工性
を高めるために、その製造工程において、微小な凹凸を
設けたダルロールによって圧延し、一定の表面粗度が付
与されている。On the other hand, a steel sheet for automobiles is rolled by a dull roll provided with minute irregularities in a manufacturing process to impart a certain surface roughness in order to enhance the adhesion and press workability of the paint.

ワークロール表面にダル加工を施すには、鋼製グリッ
トをロール表面に投射するショットブラスト法や、ロー
ル表面を放電エネルギーで溶融して凹凸を形成する放電
加工法が実用化されている。In order to apply dulling to the surface of a work roll, a shot blast method in which steel grit is projected on the roll surface, and an electric discharge machining method in which the roll surface is melted with discharge energy to form irregularities have been put to practical use.

又近年ダル加工のエネルギー源として制御性に優れた
レーザ光を用いたレーザダル加工法が提案され、例えば
特開昭62−151205号公報においてはレーザ加工によるダ
ル目付けを行ったスキンパスロールにより、スキンパス
圧延後に鋼板表面に規則的な粗度パターンを付与するこ
とが開示されている。In recent years, a laser dulling method using a laser beam having excellent controllability as an energy source for dulling has been proposed. For example, in Japanese Patent Application Laid-Open No. 62-151205, skin pass rolling using a skin pass roll with laser dulling is performed. It is disclosed later that a regular roughness pattern is applied to the surface of the steel sheet.

（発明が解決しようとする課題） 圧延においてはロール表面の凹凸パターンを鋼板表面
に転写してダル鋼板が製造されているが、ダル鋼板のプ
レス成形性は鋼板のｒ値、伸び等の機械的特性の外に、
鋼板表面粗度あるいは潤滑油等も影響が大きい。(Problems to be Solved by the Invention) In rolling, a dull steel plate is manufactured by transferring a concavo-convex pattern on a roll surface to a steel plate surface. The press formability of the dull steel plate is determined by mechanical properties such as r-value and elongation of the steel plate. Beside the properties,
The surface roughness of the steel sheet or lubricating oil also has a large effect.

一般的には凹凸パターンの凹部にたまった潤滑油が均
等に凸部に供給されることにより、潤滑条件が良くなり
プレス成形性、即ち型かじり、焼付けが防止される。Generally, the lubricating oil accumulated in the concave portions of the concavo-convex pattern is evenly supplied to the convex portions, so that the lubricating conditions are improved and the press formability, that is, the galling and seizure are prevented.

一方表面粗度を大きくすることは鋼板の鮮映性が低下
し、商品価値に影響するので、プレス成形性と鮮映性と
は両立しにくいと考えられている。On the other hand, increasing the surface roughness lowers the sharpness of the steel sheet and affects the commercial value, so it is considered that it is difficult to achieve both press formability and sharpness.

本発明は深絞り等プレス成形性に優れるとともに鏡面
に近い鮮映性を有する鋼板を提供するものである。The present invention provides a steel sheet which is excellent in press formability such as deep drawing and has sharpness close to a mirror surface.

（課題を解決するための手段） 本発明は、あらかじめブライトロールにて調質圧延を
施し、表面平坦化した鋼板に、さらに圧延を行ない鋼板
圧延面に凹凸の粗面を保有し、その平坦率Ａ85％のダ
ル目付を付与されたことを特徴とし、凹凸の占める割合
において、凹部が10〜90％の範囲であること、そして鋼
板表面の凹凸の粗度を板幅中央付近は粗度を細かく、両
端部は粗度を粗くすること、及び鋼板表面の凹凸のモチ
ーフを板幅中央付近と両端部で異なるモチーフを用いる
ことを含む。(Means for Solving the Problems) The present invention provides a steel sheet which has been subjected to temper rolling with a bright roll in advance and has a flat surface, and further rolled to retain a roughened surface on the rolled surface of the steel sheet. It is characterized by the fact that a gross weight of A85% is given, the recesses are in the range of 10 to 90% in the proportion of the unevenness, and the roughness of the unevenness on the surface of the steel sheet is reduced near the center of the sheet width. In addition, the method includes roughening the roughness at both ends and using a motif different from the vicinity of the center of the width of the sheet and the both ends for the uneven motif of the steel sheet surface.

以下本発明を詳述する。 Hereinafter, the present invention will be described in detail.

一般にダル鋼板は圧延用ワークロール表面にダル加工
し、このロールで鋼板を圧延してダルパターンが圧延面
に転写され製造されるが、例えば特開昭63−112086号公
報では、ロール表面に高密度エネルギ放射によってクレ
ータ状の微小凹部を形成したダルパターンを有するロー
ルが提案されている。Generally, a dull steel sheet is dulled on the surface of a work roll for rolling, and the steel sheet is rolled with this roll to transfer a dull pattern to a rolled surface. This is, for example, disclosed in JP-A-63-112086. A roll having a dull pattern in which crater-like minute concave portions are formed by density energy radiation has been proposed.

ところでレーザ光を圧延ロール表面に照射すると、照
射箇所に加熱、溶融、凝固のプロセスにより数μｍから
数十μｍの突起を有するモチーフ（主調）が形成される
ことが知られている（特開平１−95804号公報）。By the way, it is known that when a laser beam is irradiated on the surface of a rolling roll, a motif (main tone) having projections of several μm to several tens μm is formed at the irradiated portion by a process of heating, melting, and solidifying (Japanese Unexamined Patent Application Publication No. Hei. -95804).

そこでこのロールを用いて圧延を行うと、第１図
（ａ）に示すように、圧延面１に照射による突起が転写
されて凹部２−1,2−2,2−3,2−ｎが非平坦部３となっ
て形成される。Then, when rolling is performed using this roll, as shown in FIG. 1 (a), the projections due to the irradiation are transferred to the rolling surface 1, and the recesses 2-1 to 2-2, 2-3 and 2-n are formed. The non-flat portion 3 is formed.

実験によるとレーザ光照射によるクレータ状のダルパ
ターンの平坦度Ａは85％未満であることが確認されてい
る。According to experiments, it has been confirmed that the flatness A of the crater-shaped dull pattern due to laser beam irradiation is less than 85%.

一般に焼付け塗装面の光沢として写像鮮明度光沢は、
表面に写る物の鏡像が明確で鮮明である度合がとられて
いるが、例えば塗膜の光沢の程度は60゜鏡面光沢度試験
法がある（JIS Z 8741）。Generally, the image sharpness gloss as the gloss of the baked painted surface is
The degree to which the mirror image of the object reflected on the surface is clear and clear is taken. For example, there is a 60 ° specular gloss test method for the degree of gloss of the coating film (JIS Z 8741).

従って本発明にいう平坦率Ａは60゜鏡面光沢度で測定
される。Therefore, the flatness A in the present invention is measured at 60 ° specular gloss.

ところで前記の通りロールのダルパターンが圧延面に
転写されてダル鋼板が得られるので、第１図（ａ）のダ
ルロールを用いた鋼板Ｓの平坦率Ａは85％未満である。By the way, as described above, the dull pattern of the roll is transferred to the rolled surface to obtain the dull steel sheet. Therefore, the flatness A of the steel sheet S using the dull roll shown in FIG. 1A is less than 85%.

平坦率が低いと凹凸パターンの凹部にたまった潤滑油
が均等に凸部に供給されて潤滑条件が良くなり、プレス
成形性、即ち型かじりが防止される利点はあるが、反面
塗装鮮映性は低下することとなる。When the flatness is low, the lubricating oil accumulated in the concave portions of the concave-convex pattern is evenly supplied to the convex portions, and the lubricating conditions are improved, and there is an advantage that press moldability, that is, mold seizure is prevented, but on the other hand, paint sharpness Will decrease.

それ故に、本発明は鋼板表面に凹凸の表面粗度を有
し、かつ、塗装鮮映性を向上させるためにタンデム圧延
後にダルパターンロールによる調質圧延を行なうのでは
なく、タンデム圧延後にブライトロールにて鋼板表面の
凸部を平坦化しておき、その後にダルパターンロールに
て鋼板表面に規則正しい凹凸を形成する。Therefore, the present invention has a surface roughness of irregularities on the surface of the steel sheet, and, in order to improve the sharpness of the coating, rather than performing temper rolling by dull pattern roll after tandem rolling, bright roll after tandem rolling The surface of the steel sheet is flattened by using a flat pattern roll. Then, regular irregularities are formed on the surface of the steel sheet by a dull pattern roll.

これにより鋼板表面の凹部凸部共に平坦化され、より
塗装鮮映性が向上するものである。As a result, both the concave and convex portions on the surface of the steel sheet are flattened, and the sharpness of the coating is further improved.

本発明者等の実験によると、鋼板Ｓの平坦率Ａ85％
のとき、プレス成形性及び鮮映性に優れていることが確
認された。よって本発明においては鋼板圧延面に凹凸の
粗面を有し、その平坦率Ａ85％、好ましくは平坦率Ａ
87％と規定する。According to experiments by the present inventors, the flatness A85% of the steel sheet S
In this case, it was confirmed that the press formability and the sharpness were excellent. Therefore, in the present invention, the rolled steel sheet has a rough surface with irregularities, and its flatness A 85%, preferably flatness A
Defined as 87%.

第１図（ｂ）は本発明の鋼板断面凹凸パターンの模式
図であるが、非平坦部３は圧延面１とロール凹部が転写
された凸部５が形成されるが、その平坦率は極めて高く
鏡面に近い値となる。FIG. 1 (b) is a schematic view of the uneven pattern of the steel sheet cross section according to the present invention. In the non-flat part 3, the rolled surface 1 and the convex part 5 to which the roll concave part is transferred are formed. The value is high and close to the mirror surface.

又鋼板のプレス成形時における型かじり防止のために
は所定の潤滑条件が必要であるが、実験によると鋼板の
凹凸の占める割合において、凹部が10〜90％でよい。勿
論潤滑油の粘性等物理的性状にもよるが、50〜75％が実
際に適している。In order to prevent mold galling during press forming of the steel sheet, predetermined lubrication conditions are required. However, according to experiments, the proportion of the unevenness of the steel sheet may be 10% to 90%. Of course, depending on the physical properties such as the viscosity of the lubricating oil, 50-75% is actually suitable.

鋼板表面の凹凸パターンの寸法範囲の一例を以下に示
す。An example of the dimension range of the concavo-convex pattern on the steel sheet surface is shown below.

鋼板表面の凹部のピッチをＰ、凹部の縦および横長さ
をそれぞれL1,L2と定義したとき、ａ）P/L1＞1.7,P/L1
＜0.85,P＜5mm,L1,L2＜5mm、ｂ）P/L2＞1.7,P/L2＜0.8
5,P＜5mm,L1/L2＜5mmのａ）およびｂ）のいずれかを満
足する範囲にあること 鋼板表面の凸部のピッチをＰ、凹部の縦および横長さ
をそれぞれL1,L2と定義したとき、ａ）P/L1＞1.7,P/L1
＜0.85,P＜5mm,L1,L2＜5mm、ｂ）P/L2＞1.7,P/L2＜0.8
5,P＜5mm,L1/L2＜5mmのａ）およびｂ）のいずれかを満
足する範囲にあること 鋼板表面の凹部のピッチをＰ、凹部の平均直径をＤと
定義したとき、P/D＞1.7,P/D＜0.85,P＜5mm,D＜5mmを満
足する範囲にあること 鋼板表面の凸部のピッチをＰ、凸部の平均直径をＤと
定義したとき、P/D＞1.7,P/D＜0.85,P＜5mm,D＜5mmを満
足する範囲にあること 以上、〜の条件で別々に実験を行った結果、プレ
ス成形性等に有効に働くことが知見として得られた。When the pitch of the concave portions on the steel sheet surface is defined as P and the vertical and horizontal lengths of the concave portions are defined as L 1 and L 2 respectively, a) P / L 1 > 1.7, P / L 1
<0.85, P <5mm, L 1, L 2 <5mm, b) P / L 2> 1.7, P / L 2 <0.8
5, P <5 mm, L 1 / L 2 <5 mm, within a range that satisfies any of a) and b). The pitch of the convex portions on the steel sheet surface is P, and the vertical and horizontal lengths of the concave portions are L 1 , when defined as L 2, a) P / L 1> 1.7, P / L 1
<0.85, P <5mm, L 1, L 2 <5mm, b) P / L 2> 1.7, P / L 2 <0.8
5, P <5 mm, L 1 / L 2 <5 mm, which satisfies either a) or b). When defining the pitch of the recesses on the steel sheet surface as P and the average diameter of the recesses as D, P /D>1.7, P / D <0.85, P <5mm, D <5mm The pitch of the projections on the steel sheet surface is defined as P, and the average diameter of the projections is defined as P / D. > 1.7, P / D <0.85, P <5mm, and D <5mm. As a result of conducting separate experiments under the above conditions, it was found that it works effectively on press formability and the like. Was done.

代表例を表１に示す。 Representative examples are shown in Table 1.

つぎに本発明の鋼板を製造するダルロールの一例を次
にのべる。 Next, an example of a dull roll for producing the steel sheet of the present invention will be described below.

圧延用ワークロールの表面に感光性レジスト剤もしく
は膜を被覆し、該ロールを回転しながら断続的にレーザ
光を照射することにより、レジスト層を硬化させ、該ロ
ールの未硬化部を洗浄して、ロール表面に１つもしくは
複数のモチーフを形成させる。The surface of a work roll for rolling is coated with a photosensitive resist agent or film, and the resist layer is cured by irradiating laser light intermittently while rotating the roll, and the uncured portion of the roll is washed. One or more motifs are formed on the roll surface.

ついで該ロールを例えば塩化第２鉄等の化学腐食剤に
よって異方性エッチングを行い、ロール母材にエッチピ
ットを形成し、所望のモチーフを得る。Then, the roll is subjected to anisotropic etching with a chemical corrosive such as ferric chloride to form etch pits in the roll base material to obtain a desired motif.

その後レジスト硬化層を洗浄はく離すると、凹凸パタ
ーンを有するダルロールをうる（以下リソグラフィ法ロ
ールという）。Thereafter, when the resist-hardened layer is removed by washing, a dull roll having a concavo-convex pattern is obtained (hereinafter referred to as a lithographic roll).

この例によると、レジスト層の硬化層と未硬化層との
境界が非常にシャープに形成されるので、後処理の異方
性エッチング時に母材のシャープさが得られ、平坦度の
面積比を大きくすることに有効となる。According to this example, since the boundary between the cured layer and the uncured layer of the resist layer is formed very sharply, the sharpness of the base material can be obtained at the time of anisotropic etching in post-processing, and the area ratio of flatness can be reduced. It is effective to make it larger.

第２図は本発明の凹凸パターンの鋼板表面模式図の一
例を示す。第２図（ａ）は、あらかじめブライトロール
により表面平坦化された鋼板に本発明のロールを用いて
圧延することにより鋼板Ｓ上に圧延面１とロール凹部が
転写された凸部５から形成された角形状凹凸パターンを
示す。FIG. 2 shows an example of a schematic diagram of a steel sheet surface having an uneven pattern according to the present invention. FIG. 2 (a) shows that a rolled surface 1 and a convex portion 5 on which a roll concave portion is transferred are formed on a steel plate S by rolling using a roll of the present invention on a steel plate whose surface has been previously flattened by a bright roll. 3 shows a square-shaped uneven pattern.

第２図（ｂ）は鋼板Ｓ上に圧延面１とロール凹部が転
写された凸部５から形成された丸形状パターンを示す。
図中のＰはピッチを示す。FIG. 2 (b) shows a circular pattern formed on the steel sheet S from the rolling surface 1 and the convex portions 5 on which the roll concave portions are transferred.
P in the figure indicates the pitch.

第３図は本発明の他の例を示す。 FIG. 3 shows another example of the present invention.

あらかじめブライトロールにて表面平坦化するための
調質圧延を行ない、その後ロールにて圧延することによ
り、第３図（ａ）において鋼板の圧延方向にみて中央域
の表面粗度を細かくし、両サイドを粗くした例を示す。In FIG. 3 (a), the surface roughness in the central region is made finer in the rolling direction of the steel sheet by performing a temper rolling for flattening the surface with a bright roll in advance and then rolling with a roll. An example in which the side is roughened is shown.

即ち表面粗度を鋼板中央域と両サイドで区別して、所
定の平坦率Ａを選択するときは、プレスによる型かじり
の厳しいゾーンと塗装鮮映性の要求の強いゾーンを鋼板
に自由に付与することができる。That is, the surface roughness is distinguished between the central region and both sides of the steel plate, and when selecting a predetermined flatness A, a zone in which the mold is severely pressed by a press and a zone in which the sharpness of paint is required are freely provided to the steel plate. be able to.

第３図（ｂ）は鋼板圧延方向にみて、中央域のモチー
フを丸形両サイドを角形にした例を示す。これによりモ
チーフを鋼板中央域と両サイドで区別して所定の平坦率
Ａを選択するときは、プレスによる型かじりの厳しいゾ
ーンと、塗装鮮映性の要求の強いゾーンを、鋼板に自由
に付与することができる。FIG. 3 (b) shows an example in which the motif in the central area is round and both sides are square when viewed in the rolling direction of the steel sheet. When the predetermined flatness A is selected by distinguishing the motif between the central region of the steel plate and both sides, a zone in which the mold is severely pressed by a press and a zone in which the sharpness of paint is required are freely provided to the steel plate. be able to.

第３図（ｃ）は鋼板の圧延方向にみて中央域の表面粗
度を細かくし、両サイドを粗くした例を示す。即ち表面
粗度のモチーフの形状を円形、角形に区別して所定の平
坦率Ａを選択するときは、プレスによる型かじりの厳し
いゾーンと、塗装鮮映性の要求の強いゾーンを鋼板に自
由に付与することができる。FIG. 3 (c) shows an example in which the surface roughness of the central region is made finer and both sides are made coarser in the rolling direction of the steel sheet. That is, when selecting the predetermined flatness A by distinguishing the shape of the motif of the surface roughness into a circle and a square, a zone in which the mold is severely pressed by a press and a zone in which the demand for sharpness of paint is strong are freely provided to the steel sheet. can do.

第４図は本発明の凹凸部のピッチおよびモチーフ等の
１例について示す。FIG. 4 shows an example of the pitch and motif of the uneven portion of the present invention.

第４図（ａ）は凹凸が角形状の例を示しており、第４
図（ｂ）は凹凸が丸形状の例を示しているが、特にこの
モチーフにこだわるものではなく、他のモチーフを用い
ても同様の効果は得られる。FIG. 4 (a) shows an example in which the unevenness has a square shape.
FIG. (B) shows an example in which the concavities and convexities are round, but the present invention is not particularly limited to this motif, and the same effect can be obtained by using another motif.

図中のＰはピッチを示し、L1,L2は角形状の場合の縦
横長さを示し、Ｄは丸形状の場合の平均直径を示してい
る。In the figure, P indicates the pitch, L 1 and L 2 indicate the vertical and horizontal lengths in the case of a square shape, and D indicates the average diameter in the case of a round shape.

尚、本発明の鋼板は薄鋼板である冷延鋼板および亜鉛
メッキ鋼板、錫メッキ鋼板等の表面処理鋼板を対象とし
て、塗装鮮映性およびプレス成形性に優れた効果を有す
る鋼板である。The steel sheet of the present invention is a steel sheet having excellent effects on paint sharpness and press formability for cold-rolled steel sheets, galvanized steel sheets, and tin-plated steel sheets, which are thin steel sheets.

本発明は、薄鋼板に限定するものではなく、熱延鋼
板、厚板鋼板等の厚鋼板にも同等の効果を有するもので
ある。The present invention is not limited to a thin steel plate, and has the same effect on a thick steel plate such as a hot-rolled steel plate and a thick steel plate.

（実 施 例） 表２に示す化学組成の鋼片から常法により熱延−冷延
工程を経て、板厚0.8mmの冷延鋼板を得た。この冷延鋼
板を焼鈍してブライトロールによりスキンパス圧延（圧
下率0.8％）を行った。(Example) A cold-rolled steel sheet having a thickness of 0.8 mm was obtained from a billet having the chemical composition shown in Table 2 through a hot rolling-cold rolling process by a conventional method. This cold-rolled steel sheet was annealed and subjected to skin pass rolling (a reduction ratio of 0.8%) using a bright roll.

その後、さらにスキンパス圧延（圧下率0.8％）を以
下のロールにより行なった。Then, skin pass rolling (rolling reduction 0.8%) was further performed by the following rolls.

スキンパスロールはショットブラスト、レーザ加工及
びリソグラフィ法によるものを使用した。As the skin pass roll, one obtained by shot blasting, laser processing and lithography was used.

表３にプレス成形性及び鮮映性の評価を示す。 Table 3 shows the evaluation of press formability and sharpness.

本発明の範囲内のものはいずれも優れた評価であっ
た。The evaluations within the scope of the present invention were all excellent.

（発明の効果） 本発明はダル鋼板の平坦率Ａ85％としたので、プレ
ス成形性及び鮮映性ともに優れた工業的効果が大であ
る。 (Effects of the Invention) Since the flatness of the dull steel sheet is set to A85% in the present invention, the industrial effect excellent in both press formability and sharpness is great.

【図面の簡単な説明】[Brief description of the drawings]

第１図（ａ）は従来法のロールを用いて圧延した鋼板断
面の模式図、第１図（ｂ）はブライトロールによる調質
圧延後にロールを用いて圧延した本発明の鋼板断面の模
式図、第２図（ａ）及び（ｂ）は、本発明の鋼板表面の
模式図、第３図（ａ），（ｂ），（ｃ）は本発明の他の
実施例の鋼板表面の模式図、第４図（ａ）及び（ｂ）は
本発明の鋼板のモチーフの例で（イ）は断面図、（ロ）
は平面図である。FIG. 1 (a) is a schematic view of a cross section of a steel sheet rolled using a conventional roll, and FIG. 1 (b) is a schematic view of a cross section of a steel sheet of the present invention rolled using a roll after temper rolling by a bright roll. FIGS. 2 (a) and 2 (b) are schematic diagrams of the steel sheet surface of the present invention, and FIGS. 3 (a), (b) and (c) are schematic diagrams of the steel sheet surface of another embodiment of the present invention. 4 (a) and 4 (b) are examples of motifs of the steel sheet of the present invention, (a) is a cross-sectional view, and (b)
Is a plan view.

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】あらかじめブライトロールにて調質圧延を
施し、表面平坦化した鋼板に、さらに圧延を行ない、鋼
板圧延面に凹凸の粗面を保有し、その平坦率Ａ85％の
ダル目付を付与されたことを特徴とする塗装鮮映性及び
プレス加工性の優れた鋼板。1. A steel sheet which has been subjected to temper rolling with a bright roll in advance and further flattened to a flattened surface, further rolling the steel sheet so as to have a rough surface on the rolled surface of the steel sheet, and to give a dullness with a flatness ratio of A85%. A steel plate with excellent paint clarity and press workability, characterized by being made. 【請求項２】粗面の凹凸の占める割合において、凹部が
10〜90％の範囲である請求項１記載の鋼板。2. The method according to claim 1, wherein the concave portion has
The steel sheet according to claim 1, wherein the steel sheet has a range of 10 to 90%. 【請求項３】鋼板表面の凹凸の粗度を板幅中央付近は粗
度を細かく、両端部は粗度を粗くした請求項１記載の鋼
板。3. The steel sheet according to claim 1, wherein the roughness of the unevenness on the surface of the steel sheet is small near the center of the sheet width and rough at both ends. 【請求項４】鋼板表面の凹凸のモチーフを板幅中央付近
と両端部で異なるモチーフを用いた請求項１記載の鋼
板。4. The steel sheet according to claim 1, wherein the motif of the unevenness on the surface of the steel sheet is different at the vicinity of the center of the sheet width and at both ends.
JP2207950A 1990-08-06 1990-08-06 Steel plate with excellent paint clarity and press workability Expired - Lifetime JP2708942B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2207950A JP2708942B2 (en) 1990-08-06 1990-08-06 Steel plate with excellent paint clarity and press workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2207950A JP2708942B2 (en) 1990-08-06 1990-08-06 Steel plate with excellent paint clarity and press workability

Publications (2)

Publication Number Publication Date
JPH0491802A JPH0491802A (en) 1992-03-25
JP2708942B2 true JP2708942B2 (en) 1998-02-04

Family

ID=16548225

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2708942B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436925C (en) * 2007-04-06 2008-11-26 鞍山市第三轧钢有限公司 Method for producing surface corrugated channel steel by rolling method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2016340275B2 (en) * 2015-10-14 2020-02-06 Novelis Inc. Engineered work roll texturing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436925C (en) * 2007-04-06 2008-11-26 鞍山市第三轧钢有限公司 Method for producing surface corrugated channel steel by rolling method

Also Published As

Publication number Publication date
JPH0491802A (en) 1992-03-25

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