JPS61147901A - Temper rolling method of galvanized steel sheet - Google Patents

Temper rolling method of galvanized steel sheet

Info

Publication number
JPS61147901A
JPS61147901A JP26630984A JP26630984A JPS61147901A JP S61147901 A JPS61147901 A JP S61147901A JP 26630984 A JP26630984 A JP 26630984A JP 26630984 A JP26630984 A JP 26630984A JP S61147901 A JPS61147901 A JP S61147901A
Authority
JP
Japan
Prior art keywords
roll
roll surface
temper rolling
pressure fluid
pressure
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
JP26630984A
Other languages
Japanese (ja)
Inventor
Nobuo Nomoto
野本　暢夫
Masaya Tsutsumi
堤　正也
Koji Kojima
康治 小島
Shiro Fujii
史朗 藤井
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 JP26630984A priority Critical patent/JPS61147901A/en
Publication of JPS61147901A publication Critical patent/JPS61147901A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • 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
    • B21B2001/228—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 skin pass rolling or temper rolling
    • 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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/383—Cladded or coated products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/10—Roughness of roll surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To improve the operating efficiency and the quality of products by blowing a high-pressure fluid of specific pressure upon a roll surface for a time set based on the expression for the purpose of removing foreign matters stuck onto the roll surface. CONSTITUTION:In temper rolling, the plated skin of the most upper surface of a steel sheet is stripped off, and the produced zinc powder wears rolls 2, 3 and degrades the quality of products. These foreign matters 6 produced on the roll surface are removed by blowing a high-pressure fluid produced by a high-pressure fluid generating device 5 upon the surface of work roll 2. At that time, the fluid pressure is regulated to >=500kg/cm<2>, and the blowing time is set based on the equation in accordance with the surface roughness of roll. By this method, the operating efficiency is improved by improving the durability of roll and reducing the frequency of roll exchanges, and the product quality is improved with the stabilization of the surface roughness of roll.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は電気亜鉛系メッキ及び溶、融亜鉛系メッキした
鋼板を調質圧延する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for temper rolling a steel sheet coated with electrolytic galvanizing and hot dip galvanizing.

溶融亜鉛系メッキされた鋼板（銅帯）は表面性状を向上
させるために、あるいは材質を向上させるために一般的
に調質圧延が行なわれている。Hot-dip galvanized steel sheets (copper strips) are generally subjected to temper rolling in order to improve the surface quality or quality of the material.

又、調質圧延機ワークロールの表面粗度は調質圧延の目
的に応じて荒いものも採用されるようになったこともあ
って、ロール表面に付着する異物を積極的に除去するこ
とが必要とされる。In addition, the surface roughness of the work rolls of temper rolling mills has become rougher depending on the purpose of temper rolling, so it is now possible to actively remove foreign matter adhering to the roll surface. Needed.

（従来技術） 従来、メッキ鋼板の調質圧延機のロール表面に付着する
異物を除去する方法として、下記２つが用いられてきた
。(Prior Art) Conventionally, the following two methods have been used to remove foreign matter adhering to the roll surface of a temper rolling mill for plated steel sheets.

（１）　　研摩討入の布、もし°くは、ブラシでロール
表面を研ぐ方法、例えば実開５１−２９６号（２）　　
水もしくは、圧延油によりロール鋼板間の潤滑性を改善
し異物付着を軽減する方法（１）の研摩討入の布、もし
くはブラシで研ぐ方法は、ロール本体に疵つけやすく、
ゴミ付等の微細な異物を取り除くことが困難である。ま
た、製品の表面外観を均質に保つため、一般にロール表
面は、適当な粗度調整を行っているが、この方式でロー
ル表面を研ぐと、ロール表面粗度の低下が著しく、ロー
ル寿命が短かくなる。(1) A method of polishing the roll surface with an abrasive cloth or a brush, for example, Utility Model Application Publication No. 51-296 (2)
Method (1), which uses water or rolling oil to improve the lubricity between rolled steel plates and reduce the adhesion of foreign matter, involves polishing with a cloth or brush, which tends to cause scratches on the roll body.
It is difficult to remove fine foreign matter such as dust. In addition, in order to maintain a uniform surface appearance of the product, the roll surface is generally adjusted to an appropriate roughness level, but when the roll surface is polished using this method, the roll surface roughness decreases significantly and the roll life is shortened. It becomes like this.

（２）の水もしくは、圧延油による方法では、異物付着
を完全に防止することが不可能であり、特に圧延油を用
いた場合は、調圧実施後、脱脂を行う必要が生じるため
生産工率が高くなる。　等の欠点があった。With the method (2) using water or rolling oil, it is impossible to completely prevent foreign matter from adhering. Especially when rolling oil is used, it is necessary to degrease after pressure adjustment, so production rate becomes higher. There were drawbacks such as.

（発明の解決しようとする問題点） 本願は上記の問題点に鑑み、電気亜鉛系メッキ鋼板ある
いは溶融亜鉛系メッキ鋼板を調質圧延するとき、ロール
表面に亜鉛粉、鉄粉等の異物が付着するので、これを除
去するものであり、又ロール表面を損うことなく調質圧
延することが出来るものである。(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present application proposes that when an electrogalvanized steel sheet or a hot-dip galvanized steel sheet is temper-rolled, foreign substances such as zinc powder and iron powder adhere to the roll surface. Therefore, this can be removed, and temper rolling can be performed without damaging the roll surface.

（問題点の解決手段） 本発明の要旨とするところは亜鉛系メッキ鋼板の調質圧
延において、圧延機のロール表面に付着する亜鉛粉、鉄
粉等の異物の除去を行う際に、ロール表面に５００にｐ
　／　ｃｄ以上の高圧流体を直接吹きつけることを特徴
とする亜鉛系メッキ鋼板の調質圧延方法であり、更にロ
ール表面に吹付ける高圧流体を下記の関係式に設定する
ものである。(Means for Solving Problems) The gist of the present invention is that when removing foreign substances such as zinc powder and iron powder adhering to the roll surface of a rolling mill during temper rolling of zinc-plated steel sheets, to 500p
This is a temper rolling method for zinc-plated steel sheets, which is characterized by directly spraying a high-pressure fluid of /cd or more, and further sets the high-pressure fluid sprayed onto the roll surface according to the following relational expression.

Ｐ　；流体圧力（Ｋｐ／ｄ） ｔ　；吹きつけ時間（ｓｅｃ　） ＰＰＩ　；　ロール表面粗度（山数／　１ｎｃｈ　）（
ｐ−５０ｏ）ｘｉ≧Ｃ・・・（１） Ｃ＝　Ｓ　Ｘ　ＰＰＩ　＋６００　　　　　・・・（２
）である。P: Fluid pressure (Kp/d) t: Spraying time (sec) PPI: Roll surface roughness (number of peaks/1 nch) (
p-50o) xi≧C...(1) C=S X PPI +600...(2
).

（作用） 以下本発明の方法及び使用する装置及びその運転条件の
詳細について述べる。(Operation) Details of the method of the present invention, the apparatus used, and its operating conditions will be described below.

第１図に、本発明に用いる装置を、４重式調質圧延機に
適用した場合についての装置構成図を示す。FIG. 1 shows a configuration diagram of an apparatus in which the apparatus used in the present invention is applied to a four-layer temper rolling mill.

メッキ鋼板１ｔ−調質圧延する際、鋼板は、ワークロー
ル２より１００〜５００ｔの圧下刃を受ける。1 t of plated steel plate - During temper rolling, the steel plate receives a reduction blade of 100 to 500 t from the work roll 2.

その際、鋼板の最表面のメッキ層の一部は剥離し、亜鉛
粉を生成し、又、ロールは摩耗され、鉄粉を生成する。At this time, a part of the plating layer on the outermost surface of the steel sheet is peeled off, producing zinc powder, and the roll is worn away, producing iron powder.

これら異物６は、ロール表面上に堆積し製品の表面外観
を著しく損なう原因となる。These foreign substances 6 accumulate on the roll surface and cause significant damage to the surface appearance of the product.

本発明の装置は、これら異物を、高圧流体発生装置５に
より生成した高圧流体をノズル４を介して、ロール表面
に吹きつけることにより異物除去を行うものである。高
圧流体の圧力は異物除去能力が得られ、かつ、ロール表
面を疵つけない範囲すすわち５００に９／−以上、好ま
しくは２０００Ｋｙ／−以下で行う。The apparatus of the present invention removes these foreign substances by spraying high-pressure fluid generated by a high-pressure fluid generator 5 onto the roll surface through a nozzle 4. The pressure of the high-pressure fluid is set within a range that provides foreign matter removal ability and does not damage the roll surface, that is, 500 Ky/- or more, preferably 2000 Ky/- or less.

また、本発明において用いる高圧流体は、通常の調質圧
延作業に用いている水あるいは、水溶性圧延油がよい。Further, the high-pressure fluid used in the present invention is preferably water or water-soluble rolling oil used in ordinary temper rolling operations.

ノズル装置位置は、ワークロール２に対し鋼板の入側に
つけてもよいし、出側につけてもよい。また、ノズル個
数は、ロール表面の異物除去を迅速に行いたい場合は鋼
板の全幅方向に数個以上ロール表面をカバーできるよう
に配置することが好ましいが、そうでない場合は数少な
いノズルを幅方向に退室往復させてもよい。さらに、本
方式は、バックアツプロール３衣面上に付着する異物の
除去を行う場合にも有効で、その場合もワークロール表
面上におけるのと同様ノズルをバックアップロール表面
上につけ、高圧流体を吹きつければよい。The nozzle device may be placed on the inlet side of the steel plate with respect to the work roll 2, or may be placed on the outlet side. In addition, when it comes to the number of nozzles, if you want to quickly remove foreign substances from the roll surface, it is preferable to arrange several or more nozzles so that they can cover the roll surface in the entire width direction of the steel plate. You may leave the room and go back and forth. Furthermore, this method is also effective when removing foreign matter adhering to the surface of the back-up roll 3. In this case, a nozzle is attached to the back-up roll surface in the same way as on the work roll surface, and high-pressure fluid is sprayed onto the back-up roll surface. Just put it on.

次に本装置の運転を行う際の高圧流体の圧力と吹きつけ
時間の決定方法について説明する。異物の除去時間は高
圧流体の圧力及びロール表面粗度の関数として表わすこ
とができる。Next, a method for determining the pressure and spraying time of the high-pressure fluid when operating this device will be explained. Foreign material removal time can be expressed as a function of high pressure fluid pressure and roll surface roughness.

ロール表面上の異物除去は、（１）式に示す不等式を満
足する高圧流体の圧力と、吹きつけ時間を採用すること
が好ましい。この際（１）式における定数Ｃは、ロール
表面の粗度特性値の１つであるＰＰＩと、（２）式の関
係で表わされ、ＰＰＩが高い程（表面粗さの間隔は狭く
なり）ロール表面の異物は落ちにくくなる。第２図には
、（１）、（２）の関係式より、代表的な例としてショ
ットダル加工ロール（ｐｐｒ＝１５０相当）と放電ダル
加工ロール（ｐＰＩ　＝２８０相当）における場合のロ
ール表面異物除去条件を示したものである。For removing foreign matter on the roll surface, it is preferable to use a high pressure fluid pressure and a spraying time that satisfy the inequality shown in equation (1). At this time, the constant C in equation (1) is expressed by the relationship between PPI, which is one of the roughness characteristic values of the roll surface, and equation (2). ) Foreign matter on the roll surface becomes difficult to fall off. Figure 2 shows, from the relational expressions (1) and (2), the presence of foreign matter on the roll surface of a typical example of a shot dull processed roll (ppr = 150 equivalent) and a discharge dull processed roll (pPI = 280 equivalent). This shows the removal conditions.

（条件）　使用流体；水溶性液圧 （使用記号）　Ｐ；流体圧力（Ｋ９　／　ｃｄ　）ｔ；
吹きつけ時間（ｓｅｃ　） ＰＰＩ：ロール表面粗度（山数／　１ｎ　ｃ　ｈ　）（
関係式）　　　（ｐ−５ｏｏ）ｘｉ、≧Ｃ・・・（１）
Ｃ＝５×ＰＰＩ　＋　６００　　　°°（２）（実施例
） 第３図は本発明の装置を実施した溶融亜鉛メツキライン
の設備構成を示す。アンコイラ−７より払い出された鋼
板は焼鈍炉８で焼鈍され、メッキ浴９でメッキされた後
、４重式調質圧延機１０及びレベラーｍｌで表面外観調
整及び形状矯正を実施した後後処理工程１２でクロメー
ト処理を施こした後、リコイラー１３に捲きとられる。(Conditions) Fluid used; water-soluble liquid pressure (symbol used) P; fluid pressure (K9/cd) t;
Spraying time (sec) PPI: Roll surface roughness (number of peaks/1n h) (
Relational expression) (p-5oo)xi, ≧C...(1)
C=5×PPI+600°° (2) (Example) FIG. 3 shows the equipment configuration of a hot-dip galvanizing line in which the apparatus of the present invention is implemented. The steel plate discharged from the uncoiler 7 is annealed in an annealing furnace 8, plated in a plating bath 9, and then subjected to surface appearance adjustment and shape correction in a 4-layer temper rolling mill 10 and a leveler ml, followed by post-treatment. After being subjected to chromate treatment in step 12, it is wound up in a recoiler 13.

本発明における装置は、４重式調質圧延機１０のワーク
ロール表面の異物を除去すべく使用した。The apparatus of the present invention was used to remove foreign matter from the surface of the work rolls of a quadruple temper rolling mill 10.

ワークロール表面には、製品の表面に均質な粗さをつけ
るため、あらかじめ粗度調整を実施している。この時、
用いたロールは、放電ダル加工を施こし、初期粗度は粗
度２．３　ｐｒｎ　（Ｒ８）　、山数２ｓ。The work roll surface is subjected to roughness adjustment in advance in order to create a uniform roughness on the surface of the product. At this time,
The roll used was subjected to electrical discharge dulling, and the initial roughness was 2.3 prn (R8) and the number of ridges was 2s.

ＰＰＩとした。It was set as PPI.

調質圧延を実施する際ロール表面粗度は、主にダル目の
亜鉛詰り現象により圧延開始後急激に低下するが、本発
明を適用した場合、この問題点が解消された。When skin pass rolling is carried out, the roll surface roughness rapidly decreases after the start of rolling, mainly due to the phenomenon of zinc clogging of the dull edges, but when the present invention is applied, this problem has been resolved.

第４図は鋼板を約１０００）ン圧延した後のロール表面
の状態を示すもので、従来法（研摩機入り布　住友スリ
ーエム製スコッチブライドのブラシロールをワークロー
ルに幽て、かつ水圧延を実施したもの）の場合ロールの
ダル目の間に亜鉛粉等の異物が詰り、ロール表面粗度が
かなり低下しているが、本発明を適用した場合ダル目の
間の亜鉛詰りは完全に除去され、ロール表面粗度はほと
んど低下していない。Figure 4 shows the condition of the roll surface after rolling a steel plate approximately 1,000 times, using the conventional method (abrasive cloth, a Scotch Bride brush roll made by Sumitomo 3M was placed on a work roll, and water rolling was carried out. In the case of roll rolls (those that have been used), foreign matter such as zinc powder is clogged between the holes of the roll, and the roll surface roughness is considerably reduced, but when the present invention is applied, the zinc clogging between the holes is completely removed. , the roll surface roughness has hardly decreased.

（発明の効果） 本方式を実施した場合のメリットは、ロール寿命が延長
することによりロール加工、手直し費用が削減できるこ
と、ロール交換回数が低減することにより作業能率が向
上すること。そして、ロール表面粗度が高位安定化する
ため製品の品質向上がはかれること等である。(Effects of the invention) The advantages of implementing this method are that roll processing and rework costs can be reduced by extending the roll life, and work efficiency is improved by reducing the number of roll replacements. In addition, since the roll surface roughness is highly stabilized, the quality of the product can be improved.

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

第１図〜第３図は本発明法の実施例を示すもので、第４
図は従来法と本発明法のロール表面の粗度の変化を示す
図である。 ｌ・・・メッキ鋼板　　　　２・・・ワークロール３・
・・バックアップロール ４・・・ノズル　　　　　　５・・・高圧流体発生装置
６・・・異物　　　　　　　７・・・アンコイラ−８・
・・焼鈍炉　　　　　　９・・・メッキ浴１０・・・調
質圧延機　　　　１１・・・レベラー１２・・・後処理
工程　　　　１３・・・リコイラー第１図 勧」体ｆＥ諜ｌ 第２図 人力（ｋｌｌｃｍり 第３図 第４図Figures 1 to 3 show examples of the method of the present invention.
The figure shows the change in roll surface roughness between the conventional method and the present invention. l...Plated steel plate 2...Work roll 3.
・・Backup roll 4・・Nozzle 5・・High pressure fluid generator 6・・Foreign object 7・・Uncoiler 8・
... Annealing furnace 9 ... Plating bath 10 ... Temper rolling mill 11 ... Leveler 12 ... Post-processing process 13 ... Recoiler Figure 3Figure 4

Claims (2)

【特許請求の範囲】[Claims] （１）亜鉛系メッキ鋼板の調質圧延において、圧圧機の
ロール表面に付着する亜鉛粉、鉄粉等の異物の除去を行
う際に、ロール表面に５００Ｋｇ／ｃｍ＾２以上の高圧
流体を直接吹きつけることを特徴とする亜鉛系メッキ鋼
板の調質圧延方法。(1) During temper rolling of galvanized steel sheets, when removing foreign substances such as zinc powder and iron powder adhering to the roll surface of the press, high-pressure fluid of 500 kg/cm^2 or more is directly applied to the roll surface. A method for temper rolling of galvanized steel sheets characterized by blowing. （２）ロール表面に吹付ける高圧流体を下記の関係式に
設定することを特徴とする特許請求の範囲第１項の亜鉛
系メッキ鋼板の調質圧延方法。 Ｐ：流体圧力（Ｋｇ／ｃｍ＾２） ｔ；吹きつけ時間（ｓｅｃ） ＰＰＩ；ロール表面粗度（山数／ｉｎｃｈ） （ｐ−５００）×ｔ≧Ｃ・・・（１） Ｃ＝５×ＰＰＩ＋６００・・・（２）(2) The method for temper rolling a galvanized steel sheet according to claim 1, characterized in that the high-pressure fluid sprayed onto the roll surface is set according to the following relational expression. P: Fluid pressure (Kg/cm^2) t: Spraying time (sec) PPI: Roll surface roughness (number of peaks/inch) (p-500) x t≧C...(1) C = 5 x PPI+600...(2)
JP26630984A 1984-12-19 1984-12-19 Temper rolling method of galvanized steel sheet Pending JPS61147901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26630984A JPS61147901A (en) 1984-12-19 1984-12-19 Temper rolling method of galvanized steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26630984A JPS61147901A (en) 1984-12-19 1984-12-19 Temper rolling method of galvanized steel sheet

Publications (1)

Publication Number Publication Date
JPS61147901A true JPS61147901A (en) 1986-07-05

Family

ID=17429135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26630984A Pending JPS61147901A (en) 1984-12-19 1984-12-19 Temper rolling method of galvanized steel sheet

Country Status (1)

Country Link
JP (1) JPS61147901A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460023A (en) * 1991-09-13 1995-10-24 International Rolling Mill Consultants Inc. Roll surface restoration system and method
WO1997046333A1 (en) * 1996-05-31 1997-12-11 Thyssen Stahl Aktiengesellschaft Process and device for treating thin sheet metal using cylinders pressed against it, in particular rollers
JP2013119090A (en) * 2011-12-06 2013-06-17 Jfe Steel Corp Temper rolling apparatus and temper rolling method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460023A (en) * 1991-09-13 1995-10-24 International Rolling Mill Consultants Inc. Roll surface restoration system and method
WO1997046333A1 (en) * 1996-05-31 1997-12-11 Thyssen Stahl Aktiengesellschaft Process and device for treating thin sheet metal using cylinders pressed against it, in particular rollers
JP2013119090A (en) * 2011-12-06 2013-06-17 Jfe Steel Corp Temper rolling apparatus and temper rolling method

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