JPH0366404A - Surface roughening method for cold rolling roll - Google Patents

Surface roughening method for cold rolling roll

Info

Publication number
JPH0366404A
JPH0366404A JP20020989A JP20020989A JPH0366404A JP H0366404 A JPH0366404 A JP H0366404A JP 20020989 A JP20020989 A JP 20020989A JP 20020989 A JP20020989 A JP 20020989A JP H0366404 A JPH0366404 A JP H0366404A
Authority
JP
Japan
Prior art keywords
roll
cold rolling
laser
rolling roll
dull
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
Application number
JP20020989A
Other languages
Japanese (ja)
Inventor
Takashi Kitamura
隆 北村
Fumihiko Nishizawa
西澤 文彦
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 JP20020989A priority Critical patent/JPH0366404A/en
Publication of JPH0366404A publication Critical patent/JPH0366404A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/005Rolls with a roughened or textured surface; Methods for making same

Landscapes

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

Abstract

PURPOSE:To give a wear resistance in the state of just as a dull working face by executing an ion implantation after executing a laser dull working or electric discharging dull working on the surface of a cold rolling roll. CONSTITUTION:A laser dull working or an electric discharging dull working is executed on a cold rolling roll 1 and after forming the surface roughening it is put in an evacuated iron implantation device and the surface quality is improved by driving the composite of N, Cr, Ti, etc., for instance, with its ionization into a specific zone from the surface. Since, therefore, the unevenness of the cold rolling roll 1 formed by the laser dull working or electric discharging dull working is hardened just as the same unevenness by the ion implantation, a roll excellent in the brightness of reflectivity, pressing property, drawability and painting adhesion, also having a long roll life can be obtd.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、調質圧延ロール等の冷間圧延ロールに関して
レーザーダル加工又は放電ダル加工により冷間圧延ロー
ルを粗面化した後イオン注入を施すこヒにより耐摩耗性
を付与した冷間圧延ロールを得る粗面化方法に関する。
Detailed Description of the Invention [Industrial Application Field] The present invention relates to a cold rolling roll such as a temper rolling roll, which is roughened by laser dulling or electric discharge dulling, and then subjected to ion implantation. The present invention relates to a surface roughening method for obtaining a cold rolling roll with wear resistance imparted by roughening.

[従来の技術] 圧延鋼板には例えば材質、物性、形状、寸法など各種の
品質、特性が要求されるが、その1つに表面品質がある
。表面品質には、美観つまり姑だ目のきれいさ、塗装性
つまり塗装やほうろうの付き具合、加工性つまりプレス
加工やDI加工などの加工難易性、耐蝕性主として発錆
性、および光学特性つまり可視光や赤外線の反射、吸収
、軸封等などかあり、これらを決める要因には表面の物
理的、機械的、化学的性質などの多くの要因があって、
その1つに表面の幾何学的形状即ち表面粗さかある。
[Prior Art] Rolled steel plates are required to have various qualities and characteristics, such as material, physical properties, shape, and dimensions, one of which is surface quality. Surface quality includes aesthetics, or the cleanliness of the edges, paintability, or the adhesion of paint or enamel, workability, or the difficulty of processing such as press working or DI processing, corrosion resistance, mainly rusting, and optical properties, or visibility. There are many factors such as reflection and absorption of light and infrared rays, shaft sealing, etc., and there are many factors that determine these, such as the physical, mechanical, and chemical properties of the surface.
One of them is surface geometry, ie surface roughness.

圧延製品表面に粗さを付ける最も普通の方法は、冷間圧
延ロールまたは調質圧延ロール表面を所定の粗さに加工
しておき、このロールで鋼板を所定の圧力で圧延し、板
表面に口・−ル表面の粗さを転写せしめる方法である。
The most common method of imparting roughness to the surface of a rolled product is to process the surface of a cold rolling roll or temper rolling roll to a predetermined roughness, then rolling a steel plate with this roll at a predetermined pressure to roughen the plate surface. This is a method that transfers the roughness of the mouth/ru surface.

ロール表面を粗面化する方法として従来広く行われてい
る方法には、ショツトブラストと放電加工法があり、又
近年では規則正しいダルモチーフを加工することが可能
なレーザータル加工性が脚光を浴びている。圧延用に用
いられているダルロール寿命はたいへん瑣要なファクタ
ーであり、圧延時における表面凹凸の耐摩耗性、耐変形
性に依秤する。
Conventionally widely used methods for roughening the roll surface include shot blasting and electrical discharge machining, and in recent years, laser tar machining, which can process regular dull motifs, has been attracting attention. There is. The life of dull rolls used for rolling is a very important factor and depends on the wear resistance and deformation resistance of the surface irregularities during rolling.

ショツトブラストは、非常に簡便であり、またこの加工
によりロール表面が加工硬化してロールの耐摩耗性を向
上させるなどの利点を持っているが、粗さが不均一であ
ること、硬いロールには長時間の加工時間を要し、深い
粗さがつけにくことなどの欠点がある。
Shot blasting is very simple and has the advantage of work-hardening the roll surface and improving the wear resistance of the roll, but it also has the advantage of uneven roughness and hard rolls. However, it requires a long processing time and has the drawbacks that it is difficult to create deep roughness.

放電加工法では、粗さの抑制は回転するロールと軸方向
に移動する電極との間の印加電圧と周波数を変えること
により行うが、クレータ−の大きさを決定する火花の及
ぶ範囲は電極の形状寸法によって決まるので、ある限界
を越えて詳細なピッチの小さな粗さを得ることは難しい
。また5油中で放電加工を行うため温度制御を行ってい
るものの加工面での冷却速度は低く、放電加工によって
生じた凸部は軟らかい。従って、圧延中のロールの初期
摩耗が激しく、転写された板表面粗度の変化が激しい。
In electrical discharge machining, roughness is suppressed by changing the applied voltage and frequency between a rotating roll and an axially moving electrode, but the range of the spark that determines the size of the crater depends on the electrode. Since it is determined by the geometry, it is difficult to obtain detailed pitch small roughness beyond a certain limit. Further, although the temperature is controlled because electrical discharge machining is performed in oil, the cooling rate on the machined surface is low, and the convex portions produced by electrical discharge machining are soft. Therefore, the initial wear of the rolls during rolling is severe, and the roughness of the transferred plate surface changes significantly.

レーザー加工法は、ロール表面に一点一点大気中でレー
ザーを照射し、溶融によりクレータ−を作製するため、
簡単にかつ規則正しい同形状のダル目によるモチーフを
作ることが可能である。反面、溶融後の冷却速度が放電
加工法よりも遅く、ロール寿命が短いという欠点がある
The laser processing method irradiates the roll surface with a laser point by point in the atmosphere and creates craters by melting.
It is possible to easily and regularly create motifs using dowels of the same shape. On the other hand, the cooling rate after melting is slower than that of electrical discharge machining, and the roll life is short.

以上より、ロール寿命を延長するための解決方法として
特にレーザーダル加工法についてみると、クレータ−作
製後、強制空冷、水冷等の手法により冷却速度を高めた
り、特願昭61−52に示されているようにレーザーダ
ル加工後に、クロムメツキを施す等の表面硬度を高めロ
ール寿命を延ばす方法が考えられている。
From the above, looking at the laser dull processing method in particular as a solution to extend roll life, after crater creation, the cooling rate is increased by forced air cooling, water cooling, etc. As shown in Figure 2, methods are being considered to extend the life of the roll by increasing the surface hardness, such as applying chrome plating after laser dulling.

[発明が解決しようとする:JA題] レーザーダル加工、放電ダル加工は、ロール表面に凹凸
模様を形成することができ、その凹凸の寿命こそかダル
ロールの寿命であり、鋼板の鮮映性、プレス性、絞り性
、塗装密着性に影響を及ぼすといっても過言ではない。
[To be solved by the invention: JA problem] Laser dull processing and electric discharge dull processing can form an uneven pattern on the roll surface, and the life of the unevenness is the life of the dull roll, and the sharpness of the steel plate, It is no exaggeration to say that it affects pressability, drawability, and paint adhesion.

このダル加工後にクロムメツキを施す場合、表面にメツ
キを行うため凹凸が緩やかになると共に、凹部が埋るこ
とになる(第3図)。
When chrome plating is applied after this dulling process, since the surface is plated, the unevenness becomes gentle and the recesses are filled (Fig. 3).

しかして、ダル加工のポイントは、ロールダル目を鋼板
へ転写するため、ロールタルの面粗さ、又特にレーザー
ダルについてはクレータ−ピッチ、径、深さである。従
って、必要なこれらの条件を得るためのダルの加工条件
を設定しても、メツキ厚さにより条件が大きく変わるの
で望ましい特性を得ることができない。一方、メツキを
考慮したダル加工を行なえばよいように考えられるが、
この場合ダル加工量が大きくなるため加工時間およびエ
ネルギ損失という点で問題がある。又必要な条件を得る
ためにダル加工とメツキ加工という二工程後の設定か必
要となるため、技術的に難しくかつ誤差を生ずる恐れが
ある。このためタル加工のみの一工程で必要条件を得て
かつ耐摩耗性等を付与することが必要である。
Therefore, the key points in dulling are the surface roughness of the roll, and especially the crater pitch, diameter, and depth for laser dulling, in order to transfer the roll dullness to the steel plate. Therefore, even if processing conditions for the dull are set to obtain these necessary conditions, desired characteristics cannot be obtained because the conditions vary greatly depending on the plating thickness. On the other hand, it may be possible to carry out dull processing that takes into account the plating, but
In this case, since the amount of dull processing becomes large, there are problems in terms of processing time and energy loss. In addition, in order to obtain the necessary conditions, it is necessary to set the settings after two steps of dulling and plating, which is technically difficult and may lead to errors. For this reason, it is necessary to obtain the necessary conditions and impart wear resistance etc. in a single step of barrel processing.

本発明は、レーザーダル加工、放電ダル加工を行ったロ
ール表面に化粧処理をすることなしに表面改質を行い、
耐摩耗性を付与することにより、圧延時の摩耗が少なく
粗度低下の少ないロールの粗面化方法を提供することを
目的とする。
The present invention performs surface modification on the roll surface that has been subjected to laser dull processing or electric discharge dull processing without applying any cosmetic treatment.
It is an object of the present invention to provide a method for roughening a roll, which causes less wear during rolling and less decrease in roughness by imparting wear resistance.

[課題を解決するための手段] この目的を達成するための本発明のロール粗面化方法は
、冷間圧延ロールに粗面化加工を施すに当り、ロール表
面にレーザーダル加工又は放電ダル加工を施した後、イ
オン注入を施すことを特徴とする。
[Means for Solving the Problems] The roll surface roughening method of the present invention for achieving this object includes laser dulling or electric discharge dulling on the roll surface when roughening the cold rolled roll. The method is characterized in that after the ion implantation is performed, ion implantation is performed.

[作用および実施例] レーザーダル加工後イオン注入を施した口・−ル1表面
をミクロ的に観察したものを第1図に示す。なお、レー
ザーダル加工のみのものを第2図5及びレーザーダル加
工後クロムメツキ2を施したものを第3図に示す。
[Operations and Examples] Fig. 1 shows a microscopic observation of the surface of the hole 1 which was subjected to ion implantation after laser dulling. Note that FIG. 25 shows a product that has only undergone laser dull processing, and FIG. 3 shows a product that has been subjected to chrome plating 2 after laser dull processing.

イオン注入を施したロール1表面は、レーザーダル加工
のみの表面と同一であり、その表面内部に耐摩耗性の金
属イオンが注入されイオン注入により改質された領域3
が得られる。その1実施例をド記に示す。
The surface of the roll 1 that has been subjected to ion implantation is the same as the surface that has only been laser dulled, and the region 3 in which wear-resistant metal ions are implanted inside the surface and modified by ion implantation.
is obtained. One example is shown below.

冷間用圧延ロールにレーザーダル加工又は放電ダル加工
を施し、粗面化を形成した後、lO−″’Torr程度
に真空引きしたイオン注入装置に入れ、例えば、8%C
r、 Ti’、 Sn、又はTi+ C等のコンポジッ
トを表面から数十から数千オングストロームの領域にイ
オン化して打込むことにより、表面改質を行う。これは
、温度E昇なくして処理されるため、改質後の変化はな
い。従って、レーザーダル加工又は放電ダル加工により
形成された冷間用圧延ロールの凹凸がイオン注入により
同じ凹凸のまま硬化する。
After performing laser dulling or electric discharge dulling on a cold rolling roll to form a rough surface, it is placed in an ion implantation device evacuated to about 10-''' Torr, and then heated to, for example, 8% C.
The surface is modified by ionizing and implanting a composite such as r, Ti', Sn, or Ti+C into a region several tens to several thousand angstroms from the surface. Since this is processed without increasing the temperature E, there is no change after modification. Therefore, the unevenness of the cold rolling roll formed by laser dulling or electric discharge dulling is hardened by ion implantation with the same unevenness.

[発明の効果] 本発明は、ロール表面にレーザーダル加工又は放電ダル
加工した凹凸模様をそのままの状態で表面ドに耐摩耗性
の金属イオンを注入できるので、鋼板の鮮映性、プレス
性、絞り性、塗装密着性に優れかつロール寿命の長いロ
ールを得ることができる。
[Effects of the Invention] The present invention allows wear-resistant metal ions to be injected into the surface of the roll while leaving the uneven pattern formed by laser dulling or electric discharge dulling on the roll surface, thereby improving the image clarity, pressability, and Rolls with excellent drawability and paint adhesion and long roll life can be obtained.

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

第1図(a) (b)は本発明によるレーザーダル加工
後、イオン注入を施したロール表面の平面略図と断面図
、第2図はレーザーダル加工のみのロール表面断面図、
第3図は従来技術であるレーザーダル加工後、クロムメ
ツキを施したロール表面断面図である。 1・・・ロール、2・・・クロムメツキ、3・・・イオ
ン注入により改質された領域。
FIGS. 1(a) and 1(b) are schematic plan views and cross-sectional views of the roll surface with ion implantation after laser dulling according to the present invention, and FIG. 2 is a cross-sectional view of the roll surface subjected to laser dulling only.
FIG. 3 is a sectional view of the surface of a roll which has been chromed after laser dulling according to the prior art. 1... Roll, 2... Chrome plating, 3... Area modified by ion implantation.

Claims (1)

【特許請求の範囲】[Claims] 1、冷間圧延ロールに粗面化加工を施すに当り、ロール
表面にレーザーダル加工又は放電ダル加工を施した後、
イオン注入を施すことを特徴とする冷間圧延ロールの粗
面化方法。
1. When roughening the cold rolling roll, after applying laser dulling or electric discharge dulling to the roll surface,
A method for roughening the surface of a cold rolling roll, characterized by performing ion implantation.
JP20020989A 1989-08-03 1989-08-03 Surface roughening method for cold rolling roll Pending JPH0366404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20020989A JPH0366404A (en) 1989-08-03 1989-08-03 Surface roughening method for cold rolling roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20020989A JPH0366404A (en) 1989-08-03 1989-08-03 Surface roughening method for cold rolling roll

Publications (1)

Publication Number Publication Date
JPH0366404A true JPH0366404A (en) 1991-03-22

Family

ID=16420625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20020989A Pending JPH0366404A (en) 1989-08-03 1989-08-03 Surface roughening method for cold rolling roll

Country Status (1)

Country Link
JP (1) JPH0366404A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010150810A1 (en) 2009-06-26 2010-12-29 富士フイルム株式会社 Light reflecting substrate and process for manufacture thereof
EP2384100A2 (en) 2010-04-28 2011-11-02 Fujifilm Corporation Insulated light-reflective substrate
EP2586621A1 (en) 2011-10-28 2013-05-01 Fujifilm Corporation Manufacturing method and manufacturing apparatus of support for planographic printing plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010150810A1 (en) 2009-06-26 2010-12-29 富士フイルム株式会社 Light reflecting substrate and process for manufacture thereof
EP2384100A2 (en) 2010-04-28 2011-11-02 Fujifilm Corporation Insulated light-reflective substrate
EP2586621A1 (en) 2011-10-28 2013-05-01 Fujifilm Corporation Manufacturing method and manufacturing apparatus of support for planographic printing plate

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