JPH10118707A - Deflector roll excellent in wear resistance and corrosion resistance - Google Patents

Deflector roll excellent in wear resistance and corrosion resistance

Info

Publication number
JPH10118707A
JPH10118707A JP27589196A JP27589196A JPH10118707A JP H10118707 A JPH10118707 A JP H10118707A JP 27589196 A JP27589196 A JP 27589196A JP 27589196 A JP27589196 A JP 27589196A JP H10118707 A JPH10118707 A JP H10118707A
Authority
JP
Japan
Prior art keywords
spraying
thermal
deflector roll
roll
coating layer
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.)
Granted
Application number
JP27589196A
Other languages
Japanese (ja)
Other versions
JP3048223B2 (en
Inventor
Masaru Shibata
勝 柴田
Satoru Midorikawa
悟 緑川
Masaya Kumakawa
雅也 熊川
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.)
JFE Steel Corp
Tocalo Co Ltd
Original Assignee
Tocalo Co Ltd
Kawasaki 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 Tocalo Co Ltd, Kawasaki Steel Corp filed Critical Tocalo Co Ltd
Priority to JP8275891A priority Critical patent/JP3048223B2/en
Publication of JPH10118707A publication Critical patent/JPH10118707A/en
Application granted granted Critical
Publication of JP3048223B2 publication Critical patent/JP3048223B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To obtain a roll which extends the service life without developing the surface roughening caused by corrosion and wearing and the transferring to a rolled plate caused by galling by forming a thermal-spraying coated layer composed of specific composition of Ni, Cr and carbide and the balance impurities on the surface layer. SOLUTION: The thermal-spraying coated layer is formed on the surface layer of a deflector roll. The formed thermal-spraying coated layer is the thermal-spraying layer composed, by wt.%, of 35-40% Ni, 10-15% Cr and 45-55% the total of carbide and the balance impurities. The thermal-spraying coated layer is desirable to have >=800Hv hardness, >=35Kgf/mm<2> tensile strength in the point of the wear resistance and further, the material to be used to the thermal spraying is desirable to a powder state. The execution method of the thermal-spraying is suitable to use, e.g. a powder type flame thermal-spraying, by which the powdery thermal-spraying material is fed in combustion blow with oxygen-fuel gas and flown while melting to form the coated layer on the roll surface, or an explosion thermal-spraying or a plasma thermal spraying, etc.

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、スキンパス圧延ラ
インや、酸洗ライン等の金属帯を処理するプロセスライ
ンで通板する金属帯の方向を変えるためのデフレクタロ
ールに関し、とくに、耐摩耗性および耐食性を具備した
デフレクタロールに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflector roll for changing the direction of a metal strip passing through a process line for processing a metal strip such as a skin pass rolling line and a pickling line, and more particularly to a wear resistance and a deflector roll. The present invention relates to a deflector roll having corrosion resistance.

【0002】[0002]

【従来の技術】金属帯を処理するプロセスラインでは、
金属帯の方向を変えるためにデフレクタロールが用いら
れている。たとえば、連続焼鈍ライン、精整ラインのス
キンパスミル、酸洗ラインのテンションレベラー等で使
用されるデフレクタロールは金属帯に付与される張力が
高いことから、摩耗の進行が比較的速い。さらに、酸洗
ラインのテンションレベラーで使用されるデフレクタロ
ールは、このような高張力に加えて、腐食環境下で使用
されるため、摩耗および腐食が生じ易い。
2. Description of the Related Art In a process line for processing a metal strip,
Deflector rolls are used to change the direction of the metal strip. For example, a deflector roll used in a continuous annealing line, a skin pass mill in a refining line, a tension leveler in an pickling line, and the like has a high tension applied to a metal band, so that the wear progresses relatively quickly. Furthermore, since the deflector roll used in the tension leveler of the pickling line is used in a corrosive environment in addition to such high tension, abrasion and corrosion are likely to occur.

【0003】このようなデフレクタロールには、従来、
耐摩耗性を付与する目的で、軸受鋼等の高硬度材料を使
用してきたが、腐食されやすく、ロールに肌あれが発生
し、このロール肌あれが金属帯に転写され、金属帯の製
品価値が著しく損なわれることから、腐食環境下での使
用には問題を残していた。このような問題に対し、例え
ば、特開平5-277728号公報には、ロール表層にHs65を超
える硬さとなる溶接金属を肉盛溶接し、その後溶体化処
理を含む熱処理により高硬度とする耐摩耗性および耐食
性に優れかつ耐ビードマーク性に優れた肉盛ロールの製
造方法が提案されている。しかしながら、この方法で
は、溶体化処理を含む2回以上の肉盛層の熱処理を行う
必要があり、製造工程的に煩雑であり、経済的にもコス
ト高となる要因を含んでおり、さらに、硬度増加のため
の熱処理により粒界にCr炭化物が析出してCr欠乏域が形
成され、耐食性の観点からは不利となるなど、依然とし
て問題を残していた。
[0003] Such a deflector roll is conventionally provided with:
High hardness materials such as bearing steel have been used for the purpose of imparting abrasion resistance, but they are easily corroded, and the rolls have rough skin, and the roll skin is transferred to the metal band, and the product value of the metal band However, there is a problem in use in a corrosive environment since the use of such a material is significantly impaired. To address such problems, for example, Japanese Patent Application Laid-Open No. Hei 5-77728 discloses that a weld metal having a hardness exceeding Hs65 is build-up welded on a roll surface layer, and then abrasion resistance is increased by heat treatment including a solution treatment. There has been proposed a method for producing a build-up roll having excellent resistance and corrosion resistance and excellent bead mark resistance. However, in this method, it is necessary to perform the heat treatment of the build-up layer two or more times including the solution treatment, which is complicated in the manufacturing process, and includes factors that increase the cost economically. Cr carbide precipitates at the grain boundaries due to the heat treatment for increasing the hardness to form a Cr-deficient region, which is disadvantageous from the viewpoint of corrosion resistance.

【0004】[0004]

【発明が解決しようとする課題】本発明は、上記問題を
有利に解決し、耐食性および耐摩耗性に優れたデフレク
タロールを提供することを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to advantageously solve the above problems and to provide a deflector roll excellent in corrosion resistance and abrasion resistance.

【0005】[0005]

【課題を解決するための手段】本発明は、金属帯を処理
するプロセスラインで金属帯の方向を変えるデフレクタ
ロールであって、該デフレクタロール表層に、重量%
で、Ni:35〜40%、Cr:10〜15%、および炭化物を合計
で45〜55%含み残部不純物からなる溶射被覆層が形成さ
れてなることを特徴とする耐摩耗性、耐食性に優れたデ
フレクタロールである。
The present invention is directed to a deflector roll for changing the direction of a metal strip in a process line for processing a metal strip, wherein a weight% of the deflector roll is added to the surface of the deflector roll.
Excellent in wear resistance and corrosion resistance, characterized in that a thermal spray coating layer composed of Ni: 35 to 40%, Cr: 10 to 15%, and carbide in total of 45 to 55% and remaining impurities is formed. Deflector roll.

【0006】また、本発明では、前記溶射被覆層を再溶
融してもよい。
In the present invention, the sprayed coating layer may be re-melted.

【0007】[0007]

【発明の実施の形態】本発明は、金属帯を処理するプロ
セスラインで金属帯の方向を変えるために用いられるデ
フレクタロールであり、とくに酸洗ラインのテンション
レベラー等の金属帯張力が高く、しかも腐食環境下で用
いられるデフレクタロールに適用して好適である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a deflector roll used for changing the direction of a metal strip in a process line for processing a metal strip, and in particular, a metal strip having a high tension such as a tension leveler of a pickling line. It is suitable to be applied to a deflector roll used in a corrosive environment.

【0008】本発明では、デフレクタロール表層に溶射
により、溶射被覆層を形成する。形成される溶射被覆層
は、重量%で、Ni:35〜40%、Cr:10〜15%、および炭
化物を合計で45〜55%含み残部不純物からなる溶射層で
ある。つぎに、溶射被覆層の組成の限定理由について説
明する。本発明の溶射被覆層は、Ni、Crからなる基地中
に炭化物が分散した組織を有している。基地組成は、N
i:35〜40%、Cr:10〜15%からなる。この組成範囲
は、SUS304にくらべ孔食電位が約0.2 V貴であ
り、耐食性に優れている。
In the present invention, a thermal spray coating layer is formed on the surface of the deflector roll by thermal spraying. The formed thermal spray coating layer is a thermal spray layer composed of 35 to 40% of Ni, 10 to 15% of Cr, and 45 to 55% of carbide in total by weight, and the balance of impurities. Next, the reasons for limiting the composition of the thermal spray coating layer will be described. The thermal spray coating of the present invention has a structure in which carbides are dispersed in a matrix composed of Ni and Cr. Base composition is N
i: 35-40%, Cr: 10-15%. This composition range has a pitting corrosion potential of about 0.2 V more than SUS304, and is excellent in corrosion resistance.

【0009】Niが35%未満では、塩酸系の腐食に対する
耐食性が劣化し、40%を超えると、被覆層の硬さが低く
なりすぎるため、Niは、35〜40%の範囲とした。Crが、
10%未満では、水系の腐食に対する耐食性が劣化し、15
%を超えると、被覆層の硬さが低くなりすぎるため、Cr
は、10〜15%の範囲とした。基地中に分散する炭化物量
は、45〜55%とする。基地中に分散する炭化物は耐摩耗
性の点から1200Hv以上の硬さを有するのが好ましい。
If the Ni content is less than 35%, the corrosion resistance to the corrosion of the hydrochloric acid system deteriorates. If the Ni content exceeds 40%, the hardness of the coating layer becomes too low. Therefore, the Ni content is in the range of 35 to 40%. Cr is
If it is less than 10%, the corrosion resistance to water-based corrosion deteriorates, and
%, The hardness of the coating layer becomes too low.
Was in the range of 10-15%. The amount of carbide dispersed in the base shall be 45-55%. The carbide dispersed in the matrix preferably has a hardness of 1200 Hv or more from the viewpoint of wear resistance.

【0010】炭化物量が45%未満では、被覆層の硬さが
低く耐摩耗性が劣化し、55%を超えると被覆層の延性が
低下するため、炭化物量は、45〜55%の範囲とした。炭
化物は、単独、複合いずれも適用できる。炭化物として
は、延性のある面心立方晶あるいは斜方晶の結晶構造を
有するものが好ましく、WC、ZrC 、TiC 、NbC 、HfC、V
C、Cr3C2 などがあげられる。
[0010] When the amount of carbide is less than 45%, the hardness of the coating layer is low and the wear resistance is deteriorated, and when it exceeds 55%, the ductility of the coating layer is reduced, so that the amount of carbide is in the range of 45 to 55%. did. Carbides can be used alone or in combination. As the carbide, those having a ductile face-centered cubic or orthorhombic crystal structure are preferable, and WC, ZrC, TiC, NbC, HfC, V
C, Cr 3 C 2 and the like.

【0011】本発明の溶射被覆層は、800Hv 以上の硬
さ、35kgf/mm2 以上の引張強さを有するのが、耐摩耗性
の点から好ましい。溶射に用いる材料は粉末が好まし
い。溶射後、被覆層がNi:35〜40%、Cr:10〜15%、お
よび炭化物を合計で45〜55%含み残部不純物となるよう
に粉末を添加し、溶射する。
The thermal spray coating of the present invention preferably has a hardness of 800 Hv or more and a tensile strength of 35 kgf / mm 2 or more from the viewpoint of abrasion resistance. The material used for thermal spraying is preferably a powder. After the thermal spraying, powder is added so that the coating layer contains Ni: 35 to 40%, Cr: 10 to 15%, and carbide in a total amount of 45 to 55% and becomes a residual impurity, and is thermally sprayed.

【0012】溶射の施工方法は、通常公知の溶射方法が
すべて適用可能である。例えば、酸素−燃料ガスによる
燃焼炎中に粉末状の溶射材料を送給し、溶融させつつ飛
行させてロール表面に被覆層を形成する粉末式フレーム
溶射、あるいは、アセチレンなどの燃料ガスと酸素との
混合比を爆発燃焼するように調整した混合ガスに点火し
高温と高速度のフレームを作り、これを熱源として粉末
を溶融しつつ高速飛行させてロール表面に被覆層を形成
する爆発溶射、あるいは、Ar、He、N2等のガスをアーク
によりプラズマ化し、ノズルから噴射させて形成した超
高温、高速流のプラズマジェットを熱源として、プラズ
マジェット中に粉末材料をガス流にのせて送給し、これ
を溶融しつつ飛行させてロール表面に被覆層を形成する
プラズマ溶射などが好適である。
As a method for performing thermal spraying, all known thermal spraying methods can be generally applied. For example, oxy-fuel powder spraying material is supplied during a combustion flame by a combustion gas, and a powder type flame spraying in which a coating layer is formed on a roll surface by being melted and fly, or a fuel gas such as acetylene and oxygen and Explosive spraying, which ignites a mixed gas adjusted to explode and burn the mixture ratio to create a high-temperature and high-speed flame, and uses this as a heat source to melt the powder and fly at high speed to form a coating layer on the roll surface, or , Ar, the He, into plasma by the arc gases such as N 2, ultra high temperature formed by the injection from the nozzle, as a heat source of the plasma jet of high velocity flow, sending topped with powder material in a gas stream into the plasma jet feeds Plasma spraying, which forms a coating layer on the surface of the roll by causing it to fly while melting, is suitable.

【0013】本発明のデフレクタロールは、溶射被覆層
の再加熱による溶融処理を行う場合がある。この場合、
芯金とロールスリーブとを予め溶接固定するが、C含有
量が高いと割れが発生する。したがって、ロール母材
(ロールスリーブ、芯金)としては、割れ発生防止の観
点から、C含有量が0.78%以下、強度の観点から0.45%
以上のC含有量の鋼材、例えば、SCM435、S45
C、S50Cが好ましい。
In some cases, the deflector roll of the present invention performs a melting treatment by reheating the thermal spray coating layer. in this case,
The core metal and the roll sleeve are fixed in advance by welding, but cracks occur when the C content is high. Therefore, as a roll base material (roll sleeve, core metal), the C content is 0.78% or less from the viewpoint of preventing cracking and 0.45% from the viewpoint of strength.
Steel materials having the above C content, for example, SCM435, S45
C and S50C are preferred.

【0014】上記した鋼材のロール表層に溶射被覆層を
形成する。溶射被覆層の密着性を向上させるためには、
ロール表面の清浄化と、粗面化等の準備処理を行うのが
好ましい。ロール表面の清浄化は、脱脂溶液で表面を洗
浄するのがよく、また、ロール表面の粗面化は、ブラス
ト加工、機械加工等により行うのが好ましい。本発明で
は、溶射後の溶射被覆層を、酸素−アセチレン炎、酸素
−プロパン炎、高周波誘導加熱などを用いて溶融処理を
行うのが好ましい。溶融の加熱温度としては、1000〜11
50℃が好ましい。1150℃を超えると被覆層が溶融して溶
け落ちるため、過熱しすぎないことが肝要である。この
溶融処理により、皮膜の緻密化と、皮膜とロール母材と
の界面での合金化が進行し、皮膜密着力の向上が図れ
る。これにより、さらに、耐摩耗性、耐食性の向上が期
待できる。
A thermal spray coating layer is formed on the surface of the roll of the above-mentioned steel material. In order to improve the adhesion of the thermal spray coating layer,
It is preferable to perform preparation processing such as cleaning of the roll surface and roughening. The surface of the roll is preferably cleaned with a degreasing solution, and the surface of the roll is preferably roughened by blasting, machining, or the like. In the present invention, it is preferable that the thermal spray coating layer after thermal spraying is subjected to a melting treatment by using oxygen-acetylene flame, oxygen-propane flame, high-frequency induction heating, or the like. The heating temperature for melting is 1000 to 11
50 ° C. is preferred. If the temperature exceeds 1150 ° C., the coating layer melts and melts off, so it is important not to overheat. By this melting treatment, densification of the film and alloying at the interface between the film and the roll base material progress, and the adhesion of the film can be improved. Thereby, further improvement in wear resistance and corrosion resistance can be expected.

【0015】[0015]

【実施例】【Example】

(実施例1)図1に示す、胴部外径350 mmφ、胴長2100
mmのSCM435鋼製のデフレクタロール表面を脱脂処
理、ブラスト加工による粗面化処理を施したのち、Ni
粉、Cr粉、WC粉を用いて粉末式フレーム溶射法により、
ロール表層に1.0mm 厚の溶射被覆層を形成した。溶射被
覆層の組成は、Ni:40%、Cr:15%、WC:45%で、Ni、
Crの基地中に炭化物が分散した組織となっている。被覆
層の硬さは、Hv 900、分散した炭化物の硬さは、Hv 320
0 であった。
(Example 1) As shown in FIG.
mm SCM435 steel deflector roll surface is degreased and blasted for roughening, then Ni
Powder, Cr powder, and WC powder by powder flame spraying method,
A spray coating layer having a thickness of 1.0 mm was formed on the surface of the roll. The composition of the thermal spray coating layer is: Ni: 40%, Cr: 15%, WC: 45%, Ni,
It has a structure in which carbides are dispersed in the Cr base. The hardness of the coating layer is Hv 900, and the hardness of the dispersed carbide is Hv 320
It was 0.

【0016】このデフレクタロールを図2に示す酸洗ラ
イン出側のテンションレベラーのデフレクタロールとし
て組み込み、6ヶ月間操業した。その結果、6ヶ月を経
過しても、腐食によるロール肌あれや焼付きの発生はな
く、また、摩耗も少なく、操業上の問題はなく、ロール
の交換の必要もなかった。これに対し、比較例として、
酸洗ライン出側のテンションレベラーのデフレクタロー
ルとしてSUJ2鋼製のデフレクタロールを組み込み操
業した場合には、腐食によるロール肌あれが発生し、こ
のロール肌あれが圧延板へ転写したため、デフレクタロ
ールは1ヶ月で交換せざるを得なかった。
The deflector roll was incorporated as a deflector roll of a tension leveler on the exit side of the pickling line shown in FIG. 2 and operated for 6 months. As a result, even after the lapse of six months, there was no occurrence of roughening or seizure of the roll due to corrosion, there was little wear, there was no operational problem, and there was no need to replace the roll. On the other hand, as a comparative example,
When a SUJ2 steel deflector roll was used as the deflector roll of the tension leveler at the pickling line exit side, roll surface roughening due to corrosion occurred, and the roll surface rough was transferred to the rolled plate. I had to replace it in a month.

【0017】この結果、本発明により、少なくとも6倍
の寿命延長が達成できた。 (実施例2)胴部外径 300mmφ、胴長2200mmのSCM4
35鋼製のデフレクタロール表面を脱脂処理、ブラスト
加工による粗面化処理を施したのち、Ni粉、Cr粉、NbC
粉、Cr3C2 粉を用いて粉末式フレーム溶射法により、ロ
ール表層に1.5mm 厚の溶射被覆層を形成した。溶射被覆
層の組成は、Ni:40%、Cr:15%、NbC :30%、Cr
3C 2 :15%で、Ni、Crの基地中に炭化物が分散した組織
となっている。被覆層の硬さは、Hv 900、分散した炭化
物の硬さは、Hv 1500 であった。
As a result, according to the present invention, at least six times
The service life extension was achieved. (Example 2) SCM4 with a trunk outer diameter of 300 mmφ and a trunk length of 2200 mm
Degreasing and blasting of 35 steel deflector roll surface
After roughening treatment, Ni powder, Cr powder, NbC
Powder, CrThreeCTwoBy powder flame spraying method using powder,
A 1.5-mm-thick thermal spray coating layer was formed on the surface of the tool. Thermal spray coating
Layer composition: Ni: 40%, Cr: 15%, NbC: 30%, Cr
ThreeC Two: Structure with carbide dispersed in matrix of Ni and Cr at 15%
It has become. The hardness of the coating layer is Hv 900, dispersed carbonized
The hardness of the object was Hv 1500.

【0018】このデフレクタロールを連続焼鈍ラインの
スキンパスミルのデフレクタロールとして組み込み、7
ヶ月間操業した。この間、焼付きの発生はなく、摩耗も
少なく、操業上の問題はなく、ロールの交換の必要もな
かった。これに対し、比較例として、SUJ2鋼製のデ
フレクタロールを連続焼鈍ラインのスキンパスミルのデ
フレクタロールとして組み込み操業した場合には、焼付
きが発生し、これが圧延板へ転写したため、デフレクタ
ロールは2ヶ月で交換せざるを得なかった。
This deflector roll was incorporated as a deflector roll for a skin pass mill in a continuous annealing line,
Operated for months. During this time, there was no seizure, little wear, no operational problems, and no need to replace the rolls. On the other hand, as a comparative example, when a SUJ2 steel deflector roll was incorporated and operated as a deflector roll of a skin pass mill in a continuous annealing line, seizure occurred, and this was transferred to a rolled plate. I had to replace it.

【0019】この結果、本発明により、少なくとも3.5
倍の寿命延長が達成できた。 (実施例3)胴部外径 320mmφ、胴長2200mmのSCM4
35鋼製のデフレクタロール表面を脱脂処理、ブラスト
加工による粗面化処理を施したのち、Ni粉、Cr粉、ZrC
粉、VC粉を用いて粉末式フレーム溶射法により、ロール
表層に1.0mm 厚の溶射被覆層を形成した。溶射後、酸素
−アセチレン炎で被覆層の表面を加熱し、1150℃まで加
熱して、被覆層を再溶融させた。溶射被覆層の組成は、
Ni:40%、Cr:10%、ZrC :30%、VC:20%で、Ni、Cr
の基地中に炭化物が分散した組織となっている。被覆層
の硬さは、Hv 900、分散した炭化物の硬さは、Hv 3200
であった。
As a result, according to the present invention, at least 3.5
The service life was doubled. (Example 3) SCM4 with a trunk outer diameter of 320 mmφ and a trunk length of 2200 mm
35 Deflector roll surface made of 35 steel is degreased and blasted for roughening, then Ni powder, Cr powder, ZrC
A 1.0 mm thick thermal spray coating layer was formed on the surface of the roll by powder flame spraying using powder and VC powder. After thermal spraying, the surface of the coating layer was heated with an oxygen-acetylene flame and heated to 1150 ° C. to re-melt the coating layer. The composition of the thermal spray coating layer is
Ni: 40%, Cr: 10%, ZrC: 30%, VC: 20%, Ni, Cr
Has a structure in which carbides are dispersed in the base. The hardness of the coating layer is Hv 900, and the hardness of the dispersed carbide is Hv 3200
Met.

【0020】このデフレクタロールを連続焼鈍ラインの
スキンパスミルのデフレクタロールとして組み込み、8
ヶ月間操業した。腐食によるロール肌あれ、焼付きの発
生はなく、摩耗も少なく、操業上の問題はなく、ロール
の交換の必要もなかった。これに対し、比較例として、
SUJ2鋼製のデフレクタロールを連続焼鈍ラインのス
キンパスミルのデフレクタロールとして組み込み操業し
た場合には、焼付きが発生し、これが圧延板へ転写した
ため、デフレクタロールは2ヶ月で交換せざるが得なか
った。
This deflector roll was incorporated as a deflector roll for a skin pass mill in a continuous annealing line,
Operated for months. There was no roughening or seizure of the roll due to corrosion, there was little abrasion, there was no operational problem, and there was no need to replace the roll. On the other hand, as a comparative example,
When the SUJ2 steel deflector roll was installed as a deflector roll of a skin pass mill in a continuous annealing line, seizure occurred and this was transferred to a rolled plate, so the deflector roll had to be replaced in two months. .

【0021】この結果、本発明により、少なくとも4倍
の寿命延長が達成できた。
As a result, according to the present invention, the service life can be extended at least four times.

【0022】[0022]

【発明の効果】本発明によれば、耐食性および耐摩耗性
に優れたデフレクタロールを提供することができ、腐食
環境下で、張力の高い個所に使用した場合にも、腐食や
摩耗によるロール肌あれは生ぜず、また、焼付きによる
圧延板への転写もなく、デフレクタロールの寿命延長が
可能となり、操業の安定的向上という産業上多大の効果
を奏する。
According to the present invention, a deflector roll excellent in corrosion resistance and abrasion resistance can be provided, and even when used in a location with high tension under a corrosive environment, the roll surface due to corrosion and abrasion can be provided. This does not occur, and there is no transfer to the rolled plate due to seizure, the life of the deflector roll can be extended, and a large industrial effect of stably improving the operation is achieved.

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

【図1】本発明の実施例に使用したデフレクタロールの
仕上り形状寸法を示す部分断面側面図である。
FIG. 1 is a partial sectional side view showing a finished shape and size of a deflector roll used in an embodiment of the present invention.

【図2】テンションレベラーにおけるロール構成の1例
を示す説明図である。
FIG. 2 is an explanatory diagram showing an example of a roll configuration in a tension leveler.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 緑川 悟 千葉県千葉市中央区川崎町1番地 川崎製 鉄株式会社千葉製鉄所内 (72)発明者 熊川 雅也 千葉県船橋市行田1丁目1番1号 トーカ ロ株式会社東京工場内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoru Midorikawa 1 Kawasaki-cho, Chuo-ku, Chiba City, Chiba Prefecture Inside the Chiba Works of Kawasaki Steel Corporation (72) Masaya Kumakawa 1-1-1, Gyoda, Funabashi-shi, Chiba Tokaro Corporation Tokyo factory

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 金属帯を処理するプロセスラインで金属
帯の方向を変えるデフレクタロールであって、該デフレ
クタロール表層に、重量%で、Ni:35〜40%、Cr:10〜
15%、および炭化物を合計で45〜55%含み残部不純物か
らなる溶射被覆層が形成されてなることを特徴とする耐
摩耗性、耐食性に優れたデフレクタロール。
1. A deflector roll for changing the direction of a metal strip in a process line for processing a metal strip, wherein the surface of the deflector roll has Ni: 35 to 40% by weight and Cr: 10 to 10% by weight.
A deflector roll excellent in wear resistance and corrosion resistance, characterized in that a thermal spray coating layer containing 15% and a total of 45 to 55% of carbide and formed of a balance of impurities is formed.
【請求項2】 前記溶射被覆層が再溶融した溶射被覆層
であることを特徴とする請求項1記載のデフレクタロー
ル。
2. The deflector roll according to claim 1, wherein said thermal spray coating layer is a re-melted thermal spray coating layer.
JP8275891A 1996-10-18 1996-10-18 Deflector roll with excellent wear and corrosion resistance Expired - Fee Related JP3048223B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8275891A JP3048223B2 (en) 1996-10-18 1996-10-18 Deflector roll with excellent wear and corrosion resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8275891A JP3048223B2 (en) 1996-10-18 1996-10-18 Deflector roll with excellent wear and corrosion resistance

Publications (2)

Publication Number Publication Date
JPH10118707A true JPH10118707A (en) 1998-05-12
JP3048223B2 JP3048223B2 (en) 2000-06-05

Family

ID=17561885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8275891A Expired - Fee Related JP3048223B2 (en) 1996-10-18 1996-10-18 Deflector roll with excellent wear and corrosion resistance

Country Status (1)

Country Link
JP (1) JP3048223B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4560755B2 (en) * 2000-11-02 2010-10-13 株式会社Ihi Induction motor rotor manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4560755B2 (en) * 2000-11-02 2010-10-13 株式会社Ihi Induction motor rotor manufacturing method

Also Published As

Publication number Publication date
JP3048223B2 (en) 2000-06-05

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