JPH09157827A - Process roll for carrying cold steel strip excellent in foreign matter sticking resistance - Google Patents

Process roll for carrying cold steel strip excellent in foreign matter sticking resistance

Info

Publication number
JPH09157827A
JPH09157827A JP7312522A JP31252295A JPH09157827A JP H09157827 A JPH09157827 A JP H09157827A JP 7312522 A JP7312522 A JP 7312522A JP 31252295 A JP31252295 A JP 31252295A JP H09157827 A JPH09157827 A JP H09157827A
Authority
JP
Japan
Prior art keywords
steel strip
roll
foreign matter
carrying
ceramics
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
JP7312522A
Other languages
Japanese (ja)
Inventor
Masaaki Sawa
雅明 沢
Yoshiaki Azuma
佳昭 四阿
Shinji Sato
信治 佐藤
Yasuhiro Tsumura
康浩 津村
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 JP7312522A priority Critical patent/JPH09157827A/en
Publication of JPH09157827A publication Critical patent/JPH09157827A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the sticking of foreign matter at the time of carrying a steel strip at a high speed and a high tension by forming sprayed coating by ceramit or ceramics on the surface of a process roll for carrying a cold steel strip and sealing the projected parts therein by resin. SOLUTION: On the surface of a process roll 1 for carrying a cold steel strip such as a deflector roll, a pinch roll or the like, sprayed coating 2 having 0.5 to 10 surface roughness Ra by cermet composed of metal or alloy such as Ni, Ni-Cr or the like or by ceramics such as WC, TiC, NbC or the like by 5 to 20μm coating thickness. The recessed parts 3 in this sprayed coating 2 by cermet or ceramics are sealed by chemically stable resin 4 of Teflon series, epoxy series, silicone series or the like. The sticking of foreign matter such as iron powder or the like is prevented at the time of carrying a steel sheet to improve the durability of the roll, and, moreover, the occurrence of flaws caused by foreign matter on the steel strip to be carried is reduced to improve the quality and yield of the steel strip.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、耐異物付着性に優
れた冷間鋼帯搬送用プロセスロールに関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process roll for transporting cold steel strip which is excellent in foreign matter adhesion resistance.

【0002】[0002]

【従来の技術】冷間鋼帯の搬送用プロセスロールとして
例えば、デフレクターロール、ピンチロール、ブライド
ルロール、ステアリングロール等においては、鋼帯に張
力を加えて、搬送または形状矯正等を施しつつ搬送する
ことから、搬送用プロセスロールの摩耗によるロール寿
命が短命になることが知られている。また、ロールの耐
久性を向上させるために、ロール表面にセラミックスを
被覆し、その表面を水ガラスにより封孔処理して電気め
っき液がセラミックス膜に浸透することを防止する高耐
食性ロールが特開平3−44455号公報に開示されて
いる。
2. Description of the Related Art As process rolls for transporting cold steel strips, such as deflector rolls, pinch rolls, bridle rolls, steering rolls, etc., the steel strips are transported while being subjected to tensioning or straightening. Therefore, it is known that the life of the roll due to the abrasion of the transport process roll becomes short. Further, in order to improve the durability of the roll, there is provided a high corrosion-resistant roll that coats the roll surface with ceramics and seals the surface with water glass to prevent the electroplating solution from penetrating into the ceramic film. It is disclosed in Japanese Patent Publication No. 3-44455.

【0003】[0003]

【発明が解決しようとする課題】上記のごとく、水ガラ
スによるセラミックス膜表面を封孔処理したロールは、
セラミックス膜への電気めっき液の浸透を阻止する機能
としては十分であるが、鋼帯に高張力を加えて矯正しつ
つ搬送するブライドルロールまたは、鋼帯を方向変換し
つつ搬送するデフレクターロール等の上記搬送用プロセ
スロールにおいては、鋼帯に高張力を加え、しかも高速
搬送(通板)することから亀裂、摩耗等により封孔処理
した水ガラスが脱落し、その脱落した凹部に鉄粉等の異
物が噛み込み付着堆積して凝着する。このようなことか
ら異物によって搬送鋼帯に疵を発生させ品質を劣化させ
る等の課題がある。本発明は、このような課題を有利に
解決するためなされたものであり、セラミックス膜表面
の気孔等凹部を樹脂によって封孔処理し、鋼帯を高速、
高張力搬送においても異物の付着を確実に防止する冷間
鋼帯の搬送用プロセスロールを提供することを目的とす
るものである。
As described above, the roll obtained by sealing the surface of the ceramic film with water glass is
Although it is sufficient as a function to prevent the penetration of the electroplating solution into the ceramics film, it does not function as a bridle roll that conveys the steel strip while correcting it by applying high tension, or a deflector roll that conveys the steel strip while changing its direction. In the above-mentioned process roll for conveyance, high tension is applied to the steel strip, and since the high-speed conveyance (passing) is performed, the sealed water glass drops off due to cracking, abrasion, etc. Foreign matter is caught, adheres, accumulates, and adheres. For this reason, there is a problem that a foreign material causes a flaw in the conveyed steel strip to deteriorate the quality. The present invention has been made in order to advantageously solve such a problem, the recesses such as pores on the ceramic film surface is sealed with a resin, the steel strip at high speed,
It is an object of the present invention to provide a process roll for transporting cold steel strips, which reliably prevents foreign matter from adhering even in high tension transport.

【0004】[0004]

【課題を解決するための手段】本発明の特徴とするとこ
ろは、ロール表面に形成したサーメットまたはセラミッ
クス溶射膜表面の凹部を樹脂により、封孔したことを特
徴とする耐異物付着性に優れた冷間鋼帯搬送用プロセス
ロールである。
A feature of the present invention is that a cermet formed on a roll surface or a concave portion on the surface of a ceramic sprayed film is sealed with a resin, which is excellent in foreign matter adhesion resistance. This is a process roll for transporting cold steel strips.

【0005】[0005]

【発明の実施の形態】搬送用プロセスロール表面に溶射
形成するサーメットとしては、例えばNi、Ni−C
r、Co、Cr、Al、Y、Mo、W、Ti、V、Ta
系等の金属とWC、TiC、NbC、Cr3 2 、Al
2 3 、Cr2 3 、ZrO2 等のセラミックスからな
るサーメット、またセラミックスとしては、上記のごと
きセラミックスを溶射形成することができる。このよう
なサーメットまたはセラミックスは、一般に行われてい
るガスフレーム溶射、プラズマ溶射等により溶射膜を形
成するこができる。
BEST MODE FOR CARRYING OUT THE INVENTION Examples of cermets formed by thermal spraying on the surface of a process roll for conveyance include Ni and Ni-C.
r, Co, Cr, Al, Y, Mo, W, Ti, V, Ta
Metals such as WC, TiC, NbC, Cr 3 C 2 , Al
As the cermet made of ceramics such as 2 O 3 , Cr 2 O 3 and ZrO 2 , and as the ceramics, the above ceramics can be formed by thermal spraying. Such a cermet or ceramics can form a sprayed film by gas flame spraying, plasma spraying or the like which is generally performed.

【0006】このように溶射したサーメットまたはセラ
ミックスは、図3に示すごとくロール1の表面に溶射膜
2として溶射後、その表面を研摩して平坦化することが
あり、この研摩により溶射膜2表面に位置している溶射
膜2中の粒子が剥離して凹部3となり、また気孔が露出
して凹部3となることもあり、これらの凹部3に鉄粉等
の異物が噛み込み堆積する。
The cermet or ceramics thus sprayed may be sprayed as a sprayed film 2 on the surface of the roll 1 as shown in FIG. 3, and then the surface may be polished and flattened. By this polishing, the surface of the sprayed film 2 may be polished. Particles in the sprayed film 2 located on the side may be peeled off to form the recesses 3 and the pores may be exposed to form the recesses 3, and foreign matters such as iron powder are caught and deposited in the recesses 3.

【0007】また本発明者等は、前記のごとき冷間鋼帯
搬送用プロセスロールとして、サーメットまたはセラミ
ックスを図4のようにロール1表面に粗度(凹4、凸
5)を有する溶射膜2として形成することにより、鋼帯
の蛇行を確実に防止することを開発した。即ち、溶射し
た溶射膜表面粗度は、Ra0.5〜10に形成すること
によって、鋼帯の蛇行を確実に抑制して搬送速度を高速
に維持し、生産性を高めることができ、Ra0.5未満
であると、高速搬送時に鋼帯の蛇行が発生し易く、また
表面粗度がRa10超になると、搬送鋼帯表面に疵が発
生したり、粗度マークが転写することがあり好ましくな
い。このような表面粗度の溶射膜を形成するには、例え
ば溶射後の表面がRa0.5〜10になるように、予め
搬送用プロセスロール表面にショットブラスト等によっ
てダル加工を施した後、上記のごとく溶射膜を形成する
ことにより、確実に表面粗度を調整することができる。
As a process roll for transporting the cold steel strip as described above, the inventors of the present invention have used a cermet or a ceramic as shown in FIG. It was developed to prevent the meandering of the steel strip with certainty. That is, when the surface roughness of the sprayed sprayed film is Ra 0.5 to 10, it is possible to reliably suppress the meandering of the steel strip, maintain the conveying speed at a high speed, and improve the productivity. If it is less than 5, meandering of the steel strip is likely to occur during high-speed transportation, and if the surface roughness exceeds Ra10, flaws may occur on the surface of the transported steel strip or the roughness mark may be transferred, which is not preferable. . In order to form a sprayed film having such a surface roughness, for example, after carrying out dull processing by shot blasting or the like on the surface of the process roll for transportation so that the surface after spraying is Ra 0.5 to 10, By forming a sprayed film as described above, the surface roughness can be reliably adjusted.

【0008】上記のごとき、表面粗度を有する溶射膜厚
としては、5〜20μで確実に耐摩耗性を向上すること
ができ、5μ未満であると、早期に摩耗が発生して耐久
性が劣ることになり、また20μ超になるとコスト的に
不利であり、しかも溶射後の表面粗度を確保するため
に、ロール表面の粗度を大きくすることが必要となり好
ましくない。このような溶射膜厚で数年の耐久性(メン
テナンスフリー)を維持することができ、搬送用プロセ
スロールの取替えによる設備停止での生産性の低下を防
止し、かつ、搬送用プロセスロールの耐久性の向上によ
りコストを著しく軽減することができる。このような溶
射膜2においても表面に気孔等の凹部3が露出している
ことがあり、この凹部3に異物が堆積することになる。
[0008] As described above, the sprayed coating thickness having a surface roughness of 5 to 20 µm can surely improve the wear resistance, and if it is less than 5 µm, abrasion occurs at an early stage and durability is increased. In addition, if it exceeds 20 μ, it is disadvantageous in terms of cost, and it is not preferable because it is necessary to increase the roughness of the roll surface in order to secure the surface roughness after thermal spraying. With such a sprayed film thickness, it is possible to maintain durability for several years (maintenance-free), prevent productivity deterioration due to equipment stoppage due to replacement of the transport process roll, and durability of the transport process roll. The cost can be remarkably reduced by improving the property. Even in such a sprayed film 2, recesses 3 such as pores may be exposed on the surface, and foreign matter is deposited in the recesses 3.

【0009】しかして、この凹部を樹脂により封孔処理
するものであり、その樹脂としては、例えばテフロン
系、エポキシ系、シリコン系の樹脂等化学的に安定した
樹脂が好ましく、封孔処理方法としては、塗布、浸漬等
により処理することができる。
However, this recess is subjected to a sealing treatment with a resin. As the resin, for example, a chemically stable resin such as Teflon-based, epoxy-based or silicon-based resin is preferable. Can be treated by coating, dipping and the like.

【0010】[0010]

【実施例】次に、本発明の実施例を挙げる。図1におい
て、搬送用プロセスロール1の表面にサーメットまたは
セラミックスの溶射膜2を形成後、研摩した溶射膜2の
凹部3を樹脂6で封孔する。また図4のごとく、搬送用
プロセスロール1の表面に粗度(凹4、凸5)を有する
サーメットまたはセラミックスの溶射膜2を形成後、発
生した溶射膜2の凹部3に、図2に示すごとく、その表
面の凹部3を樹脂6で封孔するものである。
EXAMPLES Next, examples of the present invention will be described. In FIG. 1, after forming a sprayed film 2 of cermet or ceramics on the surface of the transport process roll 1, the recess 3 of the polished sprayed film 2 is sealed with a resin 6. Further, as shown in FIG. 4, after forming a sprayed film 2 of cermet or ceramics having roughness (concave 4, convex 5) on the surface of the process roll 1 for conveyance, the recessed part 3 of the sprayed film 2 generated is shown in FIG. As described above, the concave portion 3 on the surface is sealed with the resin 6.

【0011】次に、本発明の搬送用プロセスロールを用
いた操業例を挙げる。
Next, an operation example using the carrying process roll of the present invention will be described.

【表1】 [Table 1]

【0012】注1:プロセスロールは、DR:デフレク
ターロール、BR:ブライドルロール、PR:ピンチロ
ール、SR:スタアリングロール。 注2:溶射膜成分は、A:セラミックス(ZrO2 )、
B:セラミックス(Al 2 3 )、C:サーメット(A
2 3 系)、D:サーメット(WC系)。 注3:封孔樹脂は、A:テフロン系、B:エポキシ系、
C:シリコン系、E:水ガラス。 注4:鋼帯搬送量は、鋼帯搬送によりロール溶射膜表面
に異物が付着し、取替えるまでの搬送量。 注5:鋼帯蛇行回数は、鋼帯搬送量1000t毎の鋼帯
蛇行により搬送速度を大幅に低下させた回数。 注6:冷間圧延後の鋼帯熱処理設備で、鋼帯搬送用プロ
セスロールに適用した。
Note 1: Process roll is DR: deflection
Tarroll, BR: Bridle roll, PR: Pinchiro
, SR: Staring roll. Note 2: Thermal spray coating components are A: ceramics (ZrOTwo),
B: Ceramics (Al TwoOThree), C: Cermet (A
lTwoOThreeSystem), D: cermet (WC system). Note 3: Sealing resin: A: Teflon type, B: Epoxy type,
C: Silicon type, E: Water glass. Note 4: The amount of steel strip transported is the surface of the roll sprayed film due to steel strip transportation.
The amount of conveyance until foreign matter adheres to and is replaced. Note 5: The number of meandering steel strips is the number of steel strips transported per 1000 tons of steel strip.
The number of times the transport speed has been significantly reduced due to meandering. * 6: Steel strip heat treatment equipment after cold rolling.
Applied to the set roll.

【0013】[0013]

【発明の効果】本発明の搬送用プロセスロールよれば、
鉄粉等の異物付着を防止してロールの耐久性を向上し、
ロール取替えによる設備の停止が少なくなり、生産性を
高めることができる。また、ロールコストを著しく低下
させることができる。更に、搬送鋼帯の異物による疵発
生も減少して品質、歩留りを向上することができる等の
優れた効果が得られるものである。
According to the transporting process roll of the present invention,
Prevents foreign substances such as iron powder from adhering to improve roll durability,
It is possible to improve productivity by reducing the stoppage of equipment due to roll replacement. In addition, the roll cost can be significantly reduced. Further, the occurrence of flaws due to foreign matter on the conveyed steel strip is reduced, and excellent effects such as improvement in quality and yield can be obtained.

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

【図1】本発明の実施例を示す搬送用プロセスロールの
要部側断面図である。
FIG. 1 is a side sectional view of a main part of a carrying process roll showing an embodiment of the present invention.

【図2】本発明の実施例を示す搬送用プロセスロールの
要部側断面図である。
FIG. 2 is a side sectional view of a main part of a carrying process roll showing an embodiment of the present invention.

【図3】溶射後の搬送用プロセスロールの要部側断面図
である。
FIG. 3 is a side sectional view of a main part of a carrying process roll after thermal spraying.

【図4】溶射後の搬送用プロセスロールの要部側断面図
である。
FIG. 4 is a side cross-sectional view of a main part of a transporting process roll after thermal spraying.

【符号の説明】[Explanation of symbols]

1 搬送用プロセスロール 2 溶射膜 3 凹部 4 表面粗度(凹部) 5 表面粗度(凸部) 6 樹脂 1 Transport Process Roll 2 Sprayed Film 3 Recess 4 Surface Roughness (Concave) 5 Surface Roughness (Convex) 6 Resin

───────────────────────────────────────────────────── フロントページの続き (72)発明者 津村 康浩 愛知県東海市東海町5−3 新日本製鐵株 式会社名古屋製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Tsumura 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Stock Company Nagoya Works

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ロール表面に形成したサーメットまたは
セラミックス溶射膜表面の凹部を樹脂により、封孔した
ことを特徴とする耐異物付着性に優れた冷間鋼帯搬送用
プロセスロール。
1. A process roll for transporting cold steel strips, which is excellent in foreign matter adhesion resistance, characterized in that a cermet formed on the roll surface or a recess on the surface of a ceramic sprayed film is sealed with a resin.
【請求項2】 表面粗度Ra0.5〜10、膜厚5〜2
0μのサーメットまたはセラミックス溶射膜を形成せし
めたことを特徴とする請求項1に記載の耐異物付着性に
優れた冷間鋼帯搬送用プロセスロール。
2. A surface roughness Ra of 0.5 to 10 and a film thickness of 5 to 2.
The process roll for transporting cold steel strip having excellent foreign matter adhesion resistance according to claim 1, wherein a 0 μm cermet or ceramic sprayed film is formed.
JP7312522A 1995-11-30 1995-11-30 Process roll for carrying cold steel strip excellent in foreign matter sticking resistance Pending JPH09157827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7312522A JPH09157827A (en) 1995-11-30 1995-11-30 Process roll for carrying cold steel strip excellent in foreign matter sticking resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7312522A JPH09157827A (en) 1995-11-30 1995-11-30 Process roll for carrying cold steel strip excellent in foreign matter sticking resistance

Publications (1)

Publication Number Publication Date
JPH09157827A true JPH09157827A (en) 1997-06-17

Family

ID=18030246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7312522A Pending JPH09157827A (en) 1995-11-30 1995-11-30 Process roll for carrying cold steel strip excellent in foreign matter sticking resistance

Country Status (1)

Country Link
JP (1) JPH09157827A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018538447A (en) * 2015-12-23 2018-12-27 プラクスエア エス.ティ.テクノロジー、インコーポレイテッド Improved thermal spray coating on non-smooth surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018538447A (en) * 2015-12-23 2018-12-27 プラクスエア エス.ティ.テクノロジー、インコーポレイテッド Improved thermal spray coating on non-smooth surfaces

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