JP2595409B2 - Manufacturing method of dull roll for rolling - Google Patents
Manufacturing method of dull roll for rollingInfo
- Publication number
- JP2595409B2 JP2595409B2 JP4123992A JP12399292A JP2595409B2 JP 2595409 B2 JP2595409 B2 JP 2595409B2 JP 4123992 A JP4123992 A JP 4123992A JP 12399292 A JP12399292 A JP 12399292A JP 2595409 B2 JP2595409 B2 JP 2595409B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- roll
- chrome
- plating
- chromium
- 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
Links
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- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Laser Beam Processing (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
- Chemical Treatment Of Metals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ロール表面に所定の粗
度を付与した圧延用ロール及び、その製造方法に関する
ものであり、鋼板表面粗度パターンを規制する事によ
り、塗装鮮映性、及びプレス成型性を著しく向上させた
鋼板（冷延鋼板、表面処理鋼板、アルミ合金鋼板、熱延
鋼板）を製造するための冷間圧延、調質圧延、熱間圧延
用ロール及びその製造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 rolling roll provided with a predetermined roughness on the roll surface, and a method for producing the same. And rolls for cold rolling, temper rolling, hot rolling for producing steel sheets (cold rolled steel sheets, surface treated steel sheets, aluminum alloy steel sheets, hot rolled steel sheets) having significantly improved press formability, and a method for producing the same. Things.
【０００２】[0002]
【従来の技術】一般に、加工用冷間圧延鋼板は、プレス
加工し易くするため、鋼板表面をダル仕上げする。即
ち、プレス加工時、鋼板表面に形成された凹凸に、加工
用潤滑油が貯留され、金型と鋼板の摩擦を少なくし、か
つ焼付けを防止する作用をするからである。また、プレ
ス成型性に関する研究は、素材である鉄板側と、成型技
術の両面から行われてきているが、製品の高精度化と複
雑化に伴い、鋼板に対する要求特性がより高級化、多様
化しつつある。このため、現状としては、鋼板粗度を最
終的に調整する調質圧延において、鋼板表面にショット
ブラスト、放電、あるいはレーザー等でダル加工したワ
ークロールを使用し、鋼板表面に粗さを転写している。
また、実際のプレス成型における評価基準は、従来用い
られてきた鋼板の機械的特性（ｒ値、Ｅｌ値等）だけで
は不十分であり、鋼板表面粗度潤滑油等もプレス成型性
に大きな影響を及ぼす。自動車ボディや家電製品などの
外装鋼板は、塗装仕上げをして、美観を付与するが、こ
の際、塗装面の乱反射によって美観を損なわれないよう
にすることいわゆる、鮮映性に優れていることが要求さ
れる。2. Description of the Related Art Generally, the surface of a cold-rolled steel sheet for processing is dull-finished in order to facilitate press working. That is, during press working, working lubricating oil is stored in the irregularities formed on the surface of the steel sheet, thereby reducing the friction between the mold and the steel sheet and preventing seizure. In addition, research on press formability has been conducted from both the steel plate side, which is the material, and the forming technology, but with the increasing precision and complexity of products, the required characteristics of steel plates have become more sophisticated and diversified. It is getting. For this reason, at present, in the temper rolling to finally adjust the roughness of the steel sheet, a work roll that has been subjected to shot blasting, electric discharge, or dulling with a laser, etc. is used to transfer the roughness to the steel sheet surface. ing.
In addition, the evaluation criteria in actual press forming are not sufficient only with the mechanical properties (r value, El value, etc.) of the conventionally used steel sheet, and the surface roughness lubricating oil of the steel sheet has a great influence on the press formability. Effect. Exterior steel plates for automobile bodies and home appliances are painted to give them an aesthetic appearance.At this time, the appearance must not be impaired by irregular reflection of the painted surface, so-called excellent sharpness Is required.
【０００３】図１は、従来技術によるロール製造法につ
いての説明図である。まず、図１−（１）に示す様に、
ロール１表面に約５〜５０μｍの樹脂３を被覆する。被
覆する樹脂は、耐アルカリ性・耐クロム酸性・絶縁性等
の性質を有し、後工程で除去が容易である様にアルカリ
系樹脂、及びメッキシール用樹脂等が好ましく、例え
ば、アクリル樹脂、メタアクリル樹脂、メタアクリル酸
エステルポリオレフィン樹脂、エポキシ系樹脂、塩化ビ
ニル樹脂、ポリアミド系樹脂等がある。これらの樹脂を
ロール表面に５〜５０μｍの厚さとなる様に被覆する。
被覆の方法としては、ロール非回転によるロール引き抜
き法、電着塗装法、及びロール回転によるロールコータ
ー、スプレーによる吹きつけ、カーテンコーター、粉体
塗装法、フィルム状樹脂等を巻きつける、等の手段でロ
ール表面に均一に付着させ乾燥させる。FIG. 1 is an explanatory view of a conventional roll manufacturing method. First, as shown in FIG. 1- (1),
The surface of the roll 1 is coated with a resin 3 of about 5 to 50 μm. The resin to be coated has properties such as alkali resistance, chromium acid resistance, and insulation properties, and is preferably an alkali resin or a plating sealing resin so as to be easily removed in a later step. There are acrylic resin, methacrylate polyolefin resin, epoxy resin, vinyl chloride resin, polyamide resin and the like. These resins are coated on the roll surface so as to have a thickness of 5 to 50 μm.
Examples of the coating method include a roll drawing method using a non-rotating roll, an electrodeposition coating method, a roll coater using a roll rotation, spraying by a spray, a curtain coater, a powder coating method, winding a film-like resin, and the like. And uniformly dry it on the roll surface.
【０００４】次いで、図１−（２）に示す様に、樹脂を
被覆したロール１は高密度エネルギー、例えばレーザー
ビーム５により加工を受ける。即ち、レーザービーム５
を被覆した樹脂３の表面から照射して、その部分の樹脂
を溶解除去する。樹脂が溶解除去された後の凹部径は、
レーザー照射条件、特にレーザー出力、集光レンズ〜ロ
ール間ギャップ（焦点ずれ）等により制御することがで
きる。また、樹脂が溶解除去された後の凹部径は、ロー
ル表面に被覆された樹脂の膜圧によっても大きく左右さ
れ、例えばレーザー照射条件一定の場合、樹脂の膜厚が
厚いと樹脂が溶解除去された後の凹部径は小さく、逆に
膜厚が薄いと凹部径は大きくなる。このため、本発明に
おいては、樹脂が溶解除去された後の凹部径が所定の範
囲になるように、レーザー照射中に、加工ヘッド近傍の
樹脂膜厚を膜厚計（例えば電磁膜厚計）にて測定する。
そして樹脂被覆したロールを回転させながら、レーザー
加工ヘッドを移動させ、樹脂膜厚に応じた条件に、レー
ザー照射条件を補正後、あらかじめ設定されたピッチ間
隔Ｐにもとずく加工周波数、ロール回転数にてレーザー
を照射して行う。[0004] Next, as shown in FIG. 1-(2), the roll 1 coated with a resin is processed by high-density energy, for example, a laser beam 5. That is, the laser beam 5
Is irradiated from the surface of the resin 3 coated with the resin to dissolve and remove the resin in that portion. The diameter of the recess after the resin is dissolved and removed is
It can be controlled by the laser irradiation conditions, particularly the laser output, the gap between the condenser lens and the roll (defocus), and the like. Further, the diameter of the concave portion after the resin is dissolved and removed largely depends on the film pressure of the resin coated on the roll surface. For example, when the laser irradiation condition is constant, the resin is dissolved and removed when the resin film thickness is large. The diameter of the concave portion after the etching is small, and conversely, if the film thickness is small, the diameter of the concave portion becomes large. Therefore, in the present invention, the resin film thickness near the processing head is measured by a film thickness meter (for example, an electromagnetic film thickness meter) during laser irradiation so that the diameter of the concave portion after the resin is dissolved and removed is within a predetermined range. Measure with.
Then, while rotating the resin-coated roll, the laser processing head is moved, and after correcting the laser irradiation condition to a condition corresponding to the resin film thickness, a processing frequency and a roll rotation speed based on a preset pitch interval P. The irradiation is performed by laser.
【０００５】レーザー加工後、図１−（３）に示す様
に、本発明ロールをクロムメッキ溶液中でクロムメッキ
７を施す。メッキ条件は、クロムメッキ酸溶液中で２０
〜５０Ａ／ｄｍ2 の電流密度、及び樹脂が溶解除去され
た後の凹部径Ｄ５０〜２００μｍなる径、即ちクロムメ
ッキ部有効面積比に応じた投入電流１０００Ａ〜２００
０Ａ、等の条件で電解めっきを行うことにより、前記で
レーザー加工によって形成された穴径にて、１〜２０μ
ｍの厚みでクロム突起を付着することができる。この
際、樹脂が絶縁物質であるため、クロムはその表面に付
着することなく、設定したメッキ条件により、樹脂の厚
さとほぼ同等またはそれ以下の厚さにて、穴の部分だけ
にメッキされる。After the laser processing, the roll of the present invention is subjected to chrome plating 7 in a chromium plating solution as shown in FIG. The plating conditions are 20 in chromium plating acid solution.
A current density of ５０50 A / dm 2 and a diameter D50 to 200 μm after the resin is dissolved and removed, that is, a supply current 1000 A to 200 according to the effective area ratio of the chromium plating portion.
By performing electroplating under conditions such as 0 A, the diameter of the hole formed by the laser processing is 1 to 20 μm.
Chrome protrusions can be attached with a thickness of m. At this time, since the resin is an insulating material, chromium does not adhere to the surface, and is plated only on the hole portion with a thickness substantially equal to or less than the thickness of the resin according to the set plating conditions. .
【０００６】図１−（４）は、クロムメッキ後の表面状
態を示すもので、樹脂３及びロール１表面によって形成
された穴６は、電解メッキされた曲面状のクロム突起７
が付着している。次いで、クロム突起７を有するロール
は、溶剤を溶かした溶媒中に浸漬するか、溶剤でブラッ
シングするなどして、表面の樹脂を除去する。そして、
図１−（４）に示すごとく、樹脂を除去したロール１の
表面には、クロム突起７が表出する。FIG. 1- (4) shows the surface condition after chromium plating. The hole 6 formed by the resin 3 and the surface of the roll 1 has a curved chrome protrusion 7 formed by electrolytic plating.
Is attached. Next, the roll having the chromium protrusions 7 is immersed in a solvent in which the solvent is dissolved or brushed with the solvent to remove the resin on the surface. And
As shown in FIG. 1- (4), chrome protrusions 7 appear on the surface of the roll 1 from which the resin has been removed.
【０００７】[0007]
【発明が解決しようとする課題】上記の従来技術では、
圧延用ロール表面に、クロムを主成分とした突起を、所
定間隔に連続して設けることにより、プレス用潤滑油の
貯蔵増加によるプレス成型性の大幅向上等の点で優れ
る。しかし、図２に示すようにロール地鉄表面に直接樹
脂を塗布すると、ロール製造過程におけるレーザー照射
後のクロムメッキ工程にて加工穴部周辺から発生する酸
素等の気体、及び温度の影響によってロールと樹脂の密
着性が低下し、樹脂が浮き上がる。そして、そこへクロ
ムメッキが入り込むことによってロール表面のクロム突
起径が不均一となる問題を生じる。そのため、圧延鋼板
に均一なダルパターンが転写されないため、鋼板表面の
平坦部面積比率が不均一となり、塗装鮮映性を向上させ
ることができない。In the above prior art,
By providing projections mainly composed of chromium at predetermined intervals continuously on the surface of the rolling roll, the present invention is excellent in terms of, for example, greatly improving press formability due to increased storage of press lubricating oil. However, as shown in FIG. 2, when the resin is directly applied to the surface of the roll base iron, the roll and the like are generated by the gas such as oxygen generated from the periphery of the processing hole in the chrome plating process after the laser irradiation in the roll manufacturing process and the temperature. The adhesion between the resin and the resin decreases, and the resin floats. Then, there is a problem that the diameter of the chrome protrusion on the roll surface becomes non-uniform due to the chromium plating entering there. For this reason, a uniform dull pattern is not transferred to the rolled steel sheet, so that the flat portion area ratio of the steel sheet surface becomes non-uniform, and it is impossible to improve the sharpness of the coating.
【０００８】[0008]
【課題を解決するための手段】本発明は、従来技術の課
題を有利に解決するものであって、その特徴とするもの
は、ロール表面に燐酸を含むクロメート処理を施す化成
処理被膜を形成させることによって、微細あるいは粒状
の結晶が互いに入り組んだ組織とし、その上に絶縁性樹
脂の薄膜を被覆することによりロールと樹脂の結合表面
積を拡大させ結合度向上を図る。そして、被膜樹脂の膜
厚に応じて高密度エネルギーの照射条件を補正する事に
より被膜を貫通し、所定の穴を連続的に形成させ、この
ように加工したロールをクロム酸溶液中に浸漬させ、ク
ロムメッキ処理をし、その後被覆した樹脂を除去するこ
とによりロール表面に均一な突起を設けた事を特徴とす
る圧延用ダルロールの製造方法にある。DISCLOSURE OF THE INVENTION The present invention advantageously solves the problems of the prior art, and is characterized by forming a chemical conversion coating on a roll surface by performing a chromate treatment containing phosphoric acid. In this way, a structure in which fine or granular crystals are intertwined with each other, and a thin film of an insulating resin is coated thereon, thereby increasing the bonding surface area between the roll and the resin to improve the degree of bonding. Then, by penetrating the coating by correcting the irradiation conditions of high-density energy according to the thickness of the coating resin, a predetermined hole is continuously formed, and the roll thus processed is immersed in a chromic acid solution. And a chromium plating treatment, and thereafter, a uniform protrusion is provided on the roll surface by removing the coated resin.
【０００９】以下、本発明を図面に基づいて説明する。
図３は、本発明によるロール製造法についての説明図で
ある。先ず、図３−（１）に示す様に、全クロムに対す
る燐酸イオンの重量比（ＰＯ4 3- ／Ｃｒ3+＋Ｃｒ6+ 重
量比）が０．１から１．２である水系クロメート液で化
成処理を施す。この比が０．１未満ではクロメート被膜
の耐アルカリ性並びに耐食性が低下する傾向を示し、逆
に１．２超ではクロメート液中のＣｒ6+の還元作用が極
度に進行し易くなり塗布前にクロメート液中のＣｒ6+を
大幅にないしは殆どＣｒ3+に還元してしまうのでクロメ
ート液の品質は低下し、本発明の目的に適合するロール
とメッキ材との密着性が著しく劣化する。この時、目付
量１０〜２００ｍｇ／ｍ2とする。この場合、目付量が
多すぎると樹脂塗布後、レーザー加工した時に樹脂膜と
一緒に化成処理被膜を完全に除去できず、その後のクロ
ムメッキ工程でロール表面の穴加工部にクロムめっきす
る際、クロムメッキの密着性が低下する問題が生じるた
め、上記の範囲で処理することが好ましい。このように
形成されたクロメート被膜はＰＯ4 3- を介してＣｒの網
目状分子構造を有するため、耐密着性が優れさらに耐溶
接性も優れたものである。Hereinafter, the present invention will be described with reference to the drawings.
FIG. 3 is an explanatory diagram of the roll manufacturing method according to the present invention. First, as shown in FIG. 3 (1), the weight ratio of phosphate ions to total chromium (PO 4 3- / Cr 3+ + Cr 6+ weight ratio) with an aqueous chromate solution is from 1.2 to 0.1 Chemical conversion treatment is performed. If the ratio is less than 0.1, the alkali resistance and corrosion resistance of the chromate film tend to decrease, while if it exceeds 1.2, the reduction of Cr 6+ in the chromate solution becomes extremely easy to proceed, and Since the Cr 6+ in the solution is reduced to a large extent or almost to Cr 3+ , the quality of the chromate solution is reduced, and the adhesion between the roll and the plating material suitable for the purpose of the present invention is significantly deteriorated. At this time, the basis weight is 10 to 200 mg / m 2 . In this case, if the basis weight is too large, after the resin application, the chemical conversion treatment film cannot be completely removed together with the resin film when laser processing is performed, and when performing chrome plating on the hole processed portion of the roll surface in the subsequent chrome plating step, Since there is a problem that the adhesion of the chromium plating is reduced, it is preferable to perform the treatment in the above range. Since the chromate film thus formed has a network structure of Cr via PO 4 3- , it has excellent adhesion resistance and also excellent welding resistance.
【００１０】そして、その後図３−（２）に示す様に、
更にロール表面へ約５〜５０μｍの樹脂３を被覆する。
被覆する樹脂は、耐アルカリ性・耐クロム酸性・絶縁性
等の性質を有し、後工程で除去が容易である様にアルカ
リ系樹脂、及びメッキシール用樹脂等が好ましく、例え
ば、アクリル樹脂、メタアクリル樹脂、メタアクリル酸
エステル、ポリオレフィン樹脂、エポキシ系樹脂、塩化
ビニール樹脂、ポリアミド系樹脂等がある。これらの樹
脂をロール表面に５〜５０μｍの厚さとなる様に被覆す
る。被覆の方法としては、ロール非回転によるロール引
き抜き法、電着塗装法、及びロール回転によるロールコ
ーター、スプレーによる吹きつけ、カーテンコーター、
粉体塗装法、フィルム状樹脂等を巻きつける、等の手段
でロール表面に均一に付着させ乾燥させる。[0010] Then, as shown in FIG.
Further, the surface of the roll is coated with a resin 3 of about 5 to 50 μm.
The resin to be coated has properties such as alkali resistance, chromium acid resistance, and insulation properties, and is preferably an alkali resin or a plating sealing resin so as to be easily removed in a later step. There are acrylic resin, methacrylic acid ester, polyolefin resin, epoxy resin, vinyl chloride resin, polyamide resin and the like. These resins are coated on the roll surface so as to have a thickness of 5 to 50 μm. Examples of the coating method include a roll drawing method using a non-rotating roll, an electrodeposition coating method, a roll coater using a roll rotation, spraying with a spray, a curtain coater,
The powder is uniformly adhered to the roll surface by a powder coating method, winding a film-like resin or the like, and dried.
【００１１】次いで、図３−（３）に示す様に、樹脂を
被覆したロール１は高密度エネルギー、例えば、集光レ
ンズ４によって集光したレーザービーム５により加工を
受ける。即ち、レーザービーム５を被覆した樹脂３の表
面から照射して、その部分の樹脂及びロール表面化成処
理被膜を溶解除去する。この時、複数本のレーザービー
ムをごく微小時間遅らせて１つの穴に重ね打ちすること
により、１発目で樹脂を溶融除去し、２発目、３発目で
ロール表面化成処理被膜、及び穴凹部に付着した不純物
を完全に揮散除去させ、クロムメッキの密着性を高め
る。樹脂が溶解除去された後の凹部６の径は、レーザー
照射条件、特にレーザー出力集光レンズ〜ロール間ギャ
ップ（焦点ずれ）等により制御することができる。Next, as shown in FIG. 3C, the roll 1 coated with a resin is processed by high-density energy, for example, a laser beam 5 condensed by a condensing lens 4. That is, the surface of the resin 3 coated with the laser beam 5 is irradiated to dissolve and remove the resin and the roll surface chemical conversion coating in that portion. At this time, the resin is melted and removed at the first shot by repeatedly hitting a single hole with a plurality of laser beams for a very short time, and the second and third shots are subjected to the roll surface chemical conversion coating and the hole. Impurities attached to the recesses are completely volatilized and removed, and the adhesion of chrome plating is enhanced. The diameter of the concave portion 6 after the resin is dissolved and removed can be controlled by laser irradiation conditions, in particular, the gap between the laser output condenser lens and the roll (defocus).
【００１２】また、樹脂が溶解除去された後の凹部径
は、ロール表面に被覆された樹脂の膜厚によっても大き
く左右され、例えばレーザー照射条件一定の場合、樹脂
の膜厚が厚いと樹脂が溶解除去された後の凹部径は小さ
く、逆に膜厚が薄いと凹部径は大きくなる。このため、
本発明において、樹脂が溶解除去された後の凹部径が所
定の範囲になるように、レーザー照射中に、加工ヘッド
近傍の樹脂膜厚を膜厚計（例えば電磁膜厚計）にて測定
する。そして樹脂被覆したロールを回転させながら、レ
ーザー加工ヘッドを移動させ、樹脂膜厚に応じた条件
に、レーザー照射条件を補正後、あらかじめ設定された
ピッチ間隔Ｐにもとづく加工周波数、ロール回転数にて
レーザーを照射して行う。Further, the diameter of the concave portion after the resin is dissolved and removed largely depends on the film thickness of the resin coated on the roll surface. For example, when the laser irradiation condition is constant, if the resin film thickness is large, the resin becomes thick. The diameter of the recess after the dissolution and removal is small, and conversely, the diameter of the recess increases when the film thickness is small. For this reason,
In the present invention, the resin film thickness near the processing head is measured by a film thickness meter (for example, an electromagnetic film thickness meter) during laser irradiation so that the concave portion diameter after the resin is dissolved and removed is within a predetermined range. . Then, while rotating the resin-coated roll, the laser processing head is moved, and after correcting the laser irradiation condition to a condition corresponding to the resin film thickness, at a processing frequency and a roll rotation speed based on a preset pitch interval P. This is performed by irradiating a laser.
【００１３】レーザーダル加工後、図３−（４）に示す
様に、本発明ロールをクロムメッキ溶液中でクロムメッ
キ７を施す。メッキ条件は、クロムメッキ酸溶液中で２
０〜５０Ａ／ｄｍ2 の電流密度、及び樹脂が溶解除去さ
れた後の凹部径Ｄ５０〜２００μｍなる径、即ちクロム
メッキ部有効面積比に応じた投入電流１０００Ａ〜２０
００Ａ、等の条件で電解メッキを行うことにより、前記
でレーザー加工によって形成された穴径に１〜２０μｍ
の厚みでクロム突起を付着することができる。この際、
樹脂が絶縁物質であるため、クロムは樹脂表面に付着す
ることなく、設定したメッキ条件により樹脂の厚さとほ
ぼ同等、またはそれ以下の厚さにて穴の部分だけにクロ
ムメッキされる。After laser dulling, the roll of the present invention is subjected to chrome plating 7 in a chromium plating solution, as shown in FIG. The plating conditions are 2 in chromium plating acid solution.
A current density of 0 to 50 A / dm 2 and a diameter of the concave portion D50 to 200 μm after the resin is dissolved and removed, that is, a supply current 1000 A to 20 depending on the effective area ratio of the chromium plating portion.
By performing electrolytic plating under the conditions of 00A, etc., the hole diameter formed by the laser processing is 1 to 20 μm.
Chrome projections can be attached with a thickness of. On this occasion,
Since the resin is an insulating material, the chromium does not adhere to the resin surface, and is chromium-plated only at the hole portion with a thickness substantially equal to or less than the thickness of the resin depending on the set plating conditions.
【００１４】図３−（５）は、クロムメッキ後の表面状
態を示すもので、樹脂３及びロール表面化成処理被膜２
によって形成された穴凹部６には、電解メッキされた曲
面状のクロム突起７が付着している。次いで、クロム突
起７を有するロールは、溶剤を溶かした溶媒中に浸漬す
るか、溶剤でブラッシングするなどして、表面の樹脂を
除去する。そして、図３−（５）に示すごとく、樹脂を
除去したロール表面クロムメッキ部上には、クロム突起
７が表出する。以上の工程によって、本発明はロール表
面にクロム突起を所定の外径で連続的に、かつロール内
において均一な形状を設けたロールを製造することがで
きる。FIG. 3 (5) shows the surface state after chromium plating. The resin 3 and the roll surface chemical conversion coating 2 are shown.
A chrome protrusion 7 having a curved surface formed by electrolytic plating is attached to the hole recess 6 formed by the above method. Next, the roll having the chromium protrusions 7 is immersed in a solvent in which the solvent is dissolved or brushed with the solvent to remove the resin on the surface. Then, as shown in FIG. 3- (5), the chrome protrusion 7 appears on the chrome plated portion of the roll surface from which the resin has been removed. Through the above steps, the present invention can manufacture a roll in which chrome protrusions are continuously formed on the roll surface at a predetermined outer diameter and have a uniform shape in the roll.
【００１５】[0015]
【実施例】直径６１０ｍｍφの５％Ｃｒ鍛鋼調質圧延ロ
ール用ワークロールの表面に、目付量１ｇ／ｍ2 でボン
デ処理を施し、更にその上からアクリル樹脂をスプレー
塗布にて厚さ３０μｍに均一塗布した後乾燥した。その
後、該膜厚を被覆したロール表面に５０〜８０Ｗのレー
ザービームを３ビーム合成となるように遅れ時間照射
し、膜厚表面及び化成処理被膜面を貫通除去することに
より、円形凹部を形成した。すなわち、一定の照射条件
（ピーク値とパルス幅）を有するパルスレーザービーム
を集光レンズにより集光後、樹脂表面に照射する。そし
て、レーザー加工後ロールをアルカリ液温５０℃、脱脂
時間１２０ｓｅｃで電解脱脂し、クロム酸溶液にてクロ
ムメッキを行った。すなわち、クロム酸溶液中で電解メ
ッキをし、ほぼ５μｍの厚さのクロムをロール表面に形
成した凹部に密着させた。この際、ロール表面を被覆し
たアクリル樹脂は、絶縁性を有することから穴部のみに
クロムメッキが施された。メッキ後は、表面被覆してい
る樹脂を溶剤でブラッシングにて除去した。その結果、
ロール表面には、ほぼ５μｍ厚さのクロム突起が均一な
形状で形成されていた。EXAMPLE A surface of a work roll for a 5% Cr forged steel temper rolling roll having a diameter of 610 mmφ is subjected to a bond treatment at a basis weight of 1 g / m 2 , and an acrylic resin is further spray-coated thereon to a uniform thickness of 30 μm. After applying, it was dried. Thereafter, the roll surface coated with the film thickness was irradiated with a laser beam of 50 to 80 W for a delay time so that three beams were synthesized, and a circular concave portion was formed by penetrating and removing the film surface and the chemical conversion film surface. . That is, a pulse laser beam having a constant irradiation condition (peak value and pulse width) is condensed by a condensing lens and then irradiated onto the resin surface. Then, after the laser processing, the roll was electrolytically degreased at an alkaline liquid temperature of 50 ° C. for a degreasing time of 120 sec, and chromium plating was performed with a chromic acid solution. That is, electrolytic plating was performed in a chromic acid solution, and chromium having a thickness of approximately 5 μm was brought into close contact with the concave portion formed on the roll surface. At this time, since the acrylic resin covering the roll surface had insulating properties, only the holes were plated with chrome. After plating, the resin covering the surface was removed by brushing with a solvent. as a result,
Chromium protrusions having a thickness of about 5 μm were formed on the roll surface in a uniform shape.
【００１６】[0016]
【発明の効果】本発明により製造した圧延用ダルロール
の製造方法において、ロール表面に塗布した樹脂の密着
性向上によるクロムメッキ後の突起形状均一加工効果に
ついて従来技術の場合と比較して図４に示す。従来の技
術では、ロール地鉄表面へ直接アクリル樹脂を塗布し、
レーザー照射によって貫通除去した樹脂面上穴凹部のロ
ール地鉄面にクロムメッキの突起を形成していたが、こ
の場合、ロール製造工程におけるクロムメッキ加工中に
ロールと樹脂の密着性が低下し、レーザー照射により樹
脂貫通穴加工した部分にクロムメッキが入り込み、均一
な形状のクロム突起をロール表面に形成させることがで
きない。そして、このようにクロム突起形状が不均一な
ロールで圧延した鋼板は、鋼板表面凹み径が不均一とな
るため、均一な平坦面部を確保することができず、塗装
後の鮮映性に劣る。In the method of manufacturing the dull roll for rolling manufactured according to the present invention, the effect of uniform processing of the projection shape after chromium plating by improving the adhesion of the resin applied to the roll surface is shown in FIG. Show. In the conventional technology, acrylic resin is directly applied to the surface of the rolled iron,
A chrome-plated projection was formed on the roll ground iron surface of the hole recess on the resin surface that had been penetrated and removed by laser irradiation.In this case, the adhesion between the roll and the resin was reduced during chrome plating in the roll manufacturing process, The chrome plating penetrates into the portion where the resin through hole has been processed by laser irradiation, and it is not possible to form a chrome projection having a uniform shape on the roll surface. And the steel sheet rolled by the roll having the uneven chromium protrusion shape has a non-uniform dent diameter of the steel sheet surface, so that it is not possible to secure a uniform flat surface portion, and the sharpness after coating is poor. .
【００１７】そこで本発明では、アクリル樹脂塗布前に
ロール地鉄表面へボンデ処理、またはクロメート処理等
の化成処理被膜を形成させ、微細あるいは粒状の結晶が
互いに入り組んだ組織にすることによって、後工程にお
ける樹脂面上穴凹部へのクロムメッキ加工の際に、ロー
ルと樹脂との密着性面積拡大による密着度向上を図っ
た。本発明では、ロール表面へのアクリル樹脂塗布前に
化成処理を施し、樹脂塗布後レーザー照射によって貫通
除去した樹脂面上穴凹部のロール地鉄面にクロムメッキ
処理を行うことによってロールと樹脂の密着性を向上さ
せ、ロール胴部全体に均一なクロム突起形状を形成させ
ることができた。このようにして加工したロールを使っ
て圧延した鋼板の塗装鮮映性について従来技術と比較し
図５に示す。ロール円周方向、及び胴長方向に均一なク
ロム突起形状を形成する圧延用ダルロールにて圧延した
鋼板は、鋼板表面に転写されたダル凹部外径も均一とな
るため、平坦面部分を均等に確保し塗装後の鮮映性を飛
躍的に向上させることができる。Therefore, in the present invention, a chemical conversion treatment film such as a bond treatment or a chromate treatment is formed on the surface of the rolled iron before applying the acrylic resin, so that a structure in which fine or granular crystals are intertwined with each other is formed. In the case of chrome plating on the concave portion on the resin surface, the degree of adhesion was improved by increasing the adhesion area between the roll and the resin. In the present invention, the roll and the resin are adhered to each other by applying a chemical conversion treatment before applying the acrylic resin to the roll surface, and performing a chrome plating treatment on the roll ground iron surface of the hole recess on the resin surface which has been penetrated and removed by laser irradiation after the resin application. The uniformity of the chrome protrusion shape was able to be formed over the roll body part by improving the property. FIG. 5 shows the sharpness of coating of a steel sheet rolled using the rolls processed in this way, in comparison with the prior art. The rolled steel plate rolled with a rolling dull roll that forms a uniform chrome projection shape in the circumferential direction of the roll and in the body length direction, the dull concave portion outer diameter transferred to the steel plate surface also becomes uniform, so the flat surface part is evenly distributed. As a result, sharpness after painting can be dramatically improved.
【図１】従来技術によるロール製造方法の１例を示す図FIG. 1 is a diagram showing an example of a conventional roll manufacturing method.
【図２】従来技術の問題点と本発明の狙いを示す図FIG. 2 is a diagram showing the problems of the prior art and the aim of the present invention.
【図３】本発明によるロール製造方法の１例を示す図FIG. 3 is a diagram showing an example of a roll manufacturing method according to the present invention.
【図４】本発明によるクロム突起形状の均一加工効果を
示す図FIG. 4 is a view showing the uniform processing effect of a chrome projection shape according to the present invention.
【図５】本発明による塗装鮮映性向上効果を示す図であ
る。FIG. 5 is a view showing the effect of improving the sharpness of a coating according to the present invention.
１ ロール ２ 化成処理被膜 ３ 樹脂 ４ 集光レンズ ５ レーザービーム ６ 加工穴部 ７ クロム突起部 DESCRIPTION OF SYMBOLS 1 Roll 2 Chemical conversion coating 3 Resin 4 Condensing lens 5 Laser beam 6 Processing hole 7 Chrome projection
───────────────────────────────────────────────────── フロントページの続き (72)発明者 塩沢 修一 千葉県君津市君津１番地 新日本製鐵株 式会社 君津製鐵所内 (56)参考文献 特開 平５−285510（ＪＰ，Ａ) 特公 平７−106370（ＪＰ，Ｂ２) ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Shuichi Shiozawa 1 Kimitsu, Kimitsu City, Chiba Pref. Hei 7-106370 (JP, B2)
Claims (1)
ンの重量比（ＰＯ4 3-／Ｃｒ3+＋Ｃｒ6+重量比）が０．
１から１．２である水系クロメート液で化成処理を施し
て薄膜を被覆した後、その上に絶縁性樹脂の薄膜を被覆
し、被膜樹脂膜厚に応じて高密度エネルギーの照射条件
を補正する事により被膜を貫通し、所定の穴を連続的に
形成させ、このように加工したロールをクロム酸溶液中
に浸漬させ、クロムメッキ処理をし、その後、被覆した
樹脂を除去することにより、Ｃｒを主成分とし、ロール
表面に均一な突起を設けた事を特徴とする圧延用ダルロ
ールの製造方法。1. A phosphor ion for all chromium on a roll surface.
Weight ratio (POFour 3-/ Cr3++ Cr6+(Weight ratio) is 0.
Chemical conversion treatment with aqueous chromate solution of 1 to 1.2
After coating with a thin film, coat a thin film of insulating resin on it.
And irradiation conditions of high-density energy according to the resin film thickness
Penetrate the coating by correcting the
Rolls formed and processed in this way
, Chrome-plated, and then coated
By removing the resin, the main component is Cr,
Dallo for rolling, characterized by having uniform projections on the surface
Manufacturing method of the tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4123992A JP2595409B2 (en) | 1992-05-18 | 1992-05-18 | Manufacturing method of dull roll for rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4123992A JP2595409B2 (en) | 1992-05-18 | 1992-05-18 | Manufacturing method of dull roll for rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05317924A JPH05317924A (en) | 1993-12-03 |
| JP2595409B2 true JP2595409B2 (en) | 1997-04-02 |
Family
ID=14874364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4123992A Expired - Lifetime JP2595409B2 (en) | 1992-05-18 | 1992-05-18 | Manufacturing method of dull roll for rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2595409B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE259005T1 (en) * | 2001-10-11 | 2004-02-15 | Franz Oberflaechentechnik Gmbh | CREATION OF A METALLIC CONDUCTIVE SURFACE AREA ON OXIDIZED AL-MG ALLOYS |
| MY182087A (en) * | 2013-01-29 | 2021-01-18 | Jfe Steel Corp | Welded can body, welded can, method for manufacturing welded can body, and method for manufacturing welded can |
| CN115058564A (en) * | 2022-05-25 | 2022-09-16 | 新疆八一钢铁股份有限公司 | Manufacturing method of withdrawal and straightening machine roller |
-
1992
- 1992-05-18 JP JP4123992A patent/JP2595409B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05317924A (en) | 1993-12-03 |
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