JPH09157826A - Process roll for carrying cold steel strip - Google Patents
Process roll for carrying cold steel stripInfo
- Publication number
- JPH09157826A JPH09157826A JP7312521A JP31252195A JPH09157826A JP H09157826 A JPH09157826 A JP H09157826A JP 7312521 A JP7312521 A JP 7312521A JP 31252195 A JP31252195 A JP 31252195A JP H09157826 A JPH09157826 A JP H09157826A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- steel strip
- process roll
- cold steel
- 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
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷間鋼帯の搬送用
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.
【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。しかして搬送用プロセスロールの耐摩
耗性を向上させるため一般にＣｒめっきを施こす、また
ロール表面に炭化物サーメットの溶射膜を形成し、その
上層にＮｉまたはＮｉ−Ｆｅ合金電気めっき皮膜を形成
して耐摩耗性を向上することが特開平１−２５８８０５
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, the life of the roll due to the abrasion of the transport process roll becomes short. Then, in order to improve the abrasion resistance of the process roll for transportation, generally, Cr plating is applied, a sprayed film of carbide cermet is formed on the roll surface, and a Ni or Ni-Fe alloy electroplated film is formed on the upper layer. JP-A 1-258805 improves the wear resistance.
No. 6,086,045.
【０００３】[0003]
【発明が解決しようとする課題】上記のごとく、表面に
Ｃｒめっきを施したロールにおいては、未だ満足すべき
耐摩耗性を確保することが困難であり、しかも鋼帯搬送
中に搬送用プロセスロール部位で鋼帯の蛇行も発生し易
い。また、炭化物サーメットの溶射膜上層にＮｉ等の電
気めっきを施したロールにおいては、ロール部位での鋼
帯蛇行が発生し易く、しかも溶射膜と電気めっき層の二
層でありコスト的に不利である等の課題がある。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、プロセスロール表面に粗度を有するサーメット
等の溶射膜を形成して、耐摩耗性を向上するとともに、
鋼帯の蛇行も抑制することのできる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, it is still difficult to ensure satisfactory wear resistance in the Cr-plated roll, and moreover, the process roll for carrying during the carrying of the steel strip. The meandering of the steel strip is likely to occur at the part. Further, in a roll in which the upper layer of the sprayed film of carbide cermet is electroplated with Ni or the like, the steel strip meandering is likely to occur at the roll portion, and moreover, there are two layers of the sprayed film and the electroplated layer, which is a cost disadvantage. There are issues such as certain issues. The present invention has been made in order to advantageously solve such a problem, to form a sprayed film such as cermet having a roughness on the process roll surface to improve wear resistance,
It is an object of the present invention to provide a carrying process roll capable of suppressing the meandering of a steel strip.
【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、表面粗度Ｒａ１〜１０、膜厚５〜２０μ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
徴とする冷間鋼帯の搬送用プロセスロールである。The feature of the present invention resides in that a cermet or ceramic sprayed coating having a surface roughness Ra of 1 to 10 and a film thickness of 5 to 20 μm is formed on a cold strip. It is a process roll for transportation.
【０００５】[0005]
【発明の実施の形態】本発明による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Ｎ
ｉ、Ｎｉ−Ｃｒ、Ｃｏ、Ｃｒ、Ａｌ、Ｙ、Ｍｏ、Ｗ、Ｔ
ｉ、Ｖ、Ｔａ系等の金属とＷＣ、ＴｉＣ、ＮｂＣ、Ｃｒ
3 Ｃ2 、Ａｌ2 Ｏ3 、Ｃｒ2 Ｏ3 、ＺｒＯ2 、ＳｉＯ2
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 As a cermet formed by thermal spraying on the surface of a conveying process roll according to the present invention, for example, N is used.
i, Ni-Cr, Co, Cr, Al, Y, Mo, W, T
i, V, Ta-based metals and WC, TiC, NbC, Cr
3 C 2 , Al 2 O 3 , Cr 2 O 3 , ZrO 2 , SiO 2
As the cermet made of ceramics such as the above, or as the ceramics, the ceramics as described above 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】上記のごとく、溶射した溶射膜表面粗度
は、Ｒａ１〜１０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、Ｒａ１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Ｒａ１〜
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 described above, when the surface roughness of the sprayed sprayed film is set to Ra1 to 10, the meandering of the steel strip can be surely suppressed, the conveying speed can be maintained at a high speed, and the productivity can be improved. , Ra1 is less likely to meander in the steel strip during high-speed transportation, and if the surface roughness exceeds Ra10, flaws may be generated on the surface of the transported steel strip or the roughness marks may be transferred. Absent. In order to form a thermal sprayed film having such a surface roughness, for example, the surface after thermal spraying has Ra1 to Ra1.
The surface roughness can be reliably adjusted by performing dull processing on the surface of the process roll for transportation so as to be 10 in advance and then forming the sprayed film as described above.
【０００７】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。As described above, the sprayed film 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 early and the durability is deteriorated. 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.
【０００８】[0008]
【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、粗度（凹２、凸
３）を形成し、その表面にサーメットまたはセラミック
スの溶射膜４を膜厚５〜２０μ、溶射膜４表面粗度をＲ
ａ１〜１０に形成するものである。EXAMPLES Next, examples of the present invention will be described. In FIG. 1, roughness (concave 2, convex 3) is formed on the surface of the transport process roll 1, and a cermet or ceramic sprayed film 4 having a film thickness of 5 to 20 μ is formed on the surface. R
a1 to 10 are formed.
【０００９】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]
【００１０】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。 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 Ｏ3 ）、Ｃ：サーメット（Ａ
ｌ2 Ｏ3 系）、Ｄ：サーメット（ＷＣ系）、Ｃｒ：クロ
ムめっき。 注３：鋼帯搬送量は、鋼帯搬送により摩耗して取替える
までの搬送量。 注４：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５：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: The process roll is DR: deflection
Tarroll, BR: Bridle roll, PR: Pinchiro
Rules. Note 2: Thermal spray coating components are A: ceramics (ZrOTwo),
B: Ceramics (Al TwoOThree), C: Cermet (A
lTwoOThreeSystem), D: Cermet (WC system), Cr: Black
Plating. Note 3: The amount of steel strip transported should be replaced due to wear caused by steel strip transportation.
Transport amount up to. Note 4: The number of meanders of steel strip is the number of steel strips per 1000 tons of steel strip transportation
The number of times the transport speed has been significantly reduced due to meandering. Note 5: Steel strip heat treatment equipment after cold rolling.
Applied to the set roll.
【００１１】[0011]
【発明の効果】本発明の搬送用プロセスロールよれば、
耐摩耗性が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、搬送中の
鋼帯蛇行によるラインの減速も避け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,
The wear resistance is improved, the number of equipment stops due to roll replacement is reduced, and the productivity can be improved. In addition, the roll cost can be significantly reduced. Further, it is possible to obtain an excellent effect that deceleration of the line due to meandering of the steel strip during transportation can be avoided.
【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.
１ 搬送用プロセスロール ２ 表面粗度（凹部） ３ 表面粗度（凸部） ４ 溶射膜 1 Transport Process Roll 2 Surface Roughness (Concave) 3 Surface Roughness (Convex) 4 Sprayed Film
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Front Page Continuation (72) Inventor Yasuhiro Tsumura 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Co., Ltd. Nagoya Steel Works
Claims (1)
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
ことを特徴とする冷間鋼帯の搬送用プロセスロール。1. Surface roughness Ra 1 to 10, film thickness 5 to 20 μm
A process roll for transporting cold steel strips, characterized by having a cermet or a ceramic sprayed film formed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7312521A JPH09157826A (en) | 1995-11-30 | 1995-11-30 | Process roll for carrying cold steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7312521A JPH09157826A (en) | 1995-11-30 | 1995-11-30 | Process roll for carrying cold steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09157826A true JPH09157826A (en) | 1997-06-17 |
Family
ID=18030233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7312521A Pending JPH09157826A (en) | 1995-11-30 | 1995-11-30 | Process roll for carrying cold steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09157826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007148414A1 (en) | 2006-06-21 | 2007-12-27 | Nippon Steel Corporation | Delivery roll, and hearth roll for continuous annealing furnace |
-
1995
- 1995-11-30 JP JP7312521A patent/JPH09157826A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007148414A1 (en) | 2006-06-21 | 2007-12-27 | Nippon Steel Corporation | Delivery roll, and hearth roll for continuous annealing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020910 |