JPH0912126A - Protecting material for sleeve for roll - Google Patents
Protecting material for sleeve for rollInfo
- Publication number
- JPH0912126A JPH0912126A JP16375995A JP16375995A JPH0912126A JP H0912126 A JPH0912126 A JP H0912126A JP 16375995 A JP16375995 A JP 16375995A JP 16375995 A JP16375995 A JP 16375995A JP H0912126 A JPH0912126 A JP H0912126A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- roll
- shaped
- protecting member
- energizing
- 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.)
- Withdrawn
Links
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ロール用スリーブの保
護材に関し、特に、鋼材を熱処理する焼鈍炉用ハースロ
ールとそれを覆うカーボンあるいはセラミック製スリー
ブとを固定する接続部において、該ロール側コッタ金具
を挿入する該スリーブ側受溝の破損を防止し、該スリー
ブの長寿命化を図る技術に係わる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll sleeve protective material, and more particularly, to a roll sleeve at a connecting portion for fixing a hearth roll for an annealing furnace for heat treating steel and a carbon or ceramic sleeve covering the hearth roll. The present invention relates to a technique for extending the life of the sleeve by preventing damage to the sleeve-side receiving groove into which the cotter metal fitting is inserted.
【０００２】[0002]
【従来の技術】鋼材を熱処理する際に利用する焼鈍炉の
炉床には、鋼材を搬送するためハースロールが設けられ
ている。そして、このハースロールは、表面を高熱、摩
耗等から守るため、耐熱合金製であったり、表面を該合
金で溶射コーティングしたり、カーボンあるいはセラミ
ックスリーブを被せて、長寿命化を図っている。2. Description of the Related Art The hearth of an annealing furnace used for heat treatment of steel materials is provided with a hearth roll for conveying the steel materials. In order to protect the surface of the hearth roll from high heat, abrasion, etc., it is made of a heat-resistant alloy, the surface is spray-coated with the alloy, or a carbon or ceramic sleeve is covered to prolong the life.
【０００３】このうち、カーボンあるいはセラミック製
スリーブ（以下、単にカーボンスリーブという）を使用
するものは、該スリーブをハースロール本体と同期して
回転させる都合上、図４に示すように、ハースロール３
の端部円周に棒状のコッタ金具４を複数個（通常、１〜
４個）取付け、カーボンスリーブ１側に切った該コッタ
金具４のＵ字形受溝７にぴったり挿入するよう形成され
ている。Among them, the one using a carbon or ceramic sleeve (hereinafter, simply referred to as a carbon sleeve) has a hearth roll 3 as shown in FIG. 4 in order to rotate the sleeve in synchronization with the hearth roll body.
A plurality of rod-shaped cotter metal fittings 4 (usually 1 to
(4 pieces) are attached and are formed so as to be inserted exactly into the U-shaped receiving groove 7 of the cotter metal fitting 4 cut on the carbon sleeve 1 side.
【０００４】しかしながら、該ハースロール３は６００
〜１０００℃の高温で使用され、しかもハースロール３
の材質とカーボン等では熱膨張が１０倍は異なっている
ので、使用中にコッタ金具４と該受溝７の間にガタが生
じ、それに衝撃や摩耗が加わると、該受溝７は亀裂を生
じたり、最終的には破損してしまう。この破損が起きる
と、スリーブ１を交換する必要があるが、少なくとも２
〜３時間は焼鈍炉の操業を停止せねばならず、熱的にも
生産的にも大きな損害を受けることになる。そこで、該
コッタ金具４の受溝７の破損防止が従来から研究され、
種々の対策が提案されている。例えば、特開平１−３１
２０２６号公報は、受溝部表面を六方晶ＢＮでコーティ
ングする方法を、特開平３−２４９１２２号公報は、コ
ッタ金具数を１本にしたスリーブロールを、特開平３−
２２９８３０号公報は、駆動ピンが挿入される細長いピ
ン当接孔を有するスリーブを、特開平１−３１６４１３
号公報は、スリーブを分割してつなぎ合わせると共に、
該スリーブの内側に凹部を設けて、ハースロール軸の凸
部とのひっかかりによって駆動する技術を開示してい
る。However, the hearth roll 3 is 600
Used at high temperature up to 1000 ℃, and hearth roll 3
The thermal expansion of the material is different from that of carbon by 10 times. Therefore, when the cotter metal fitting 4 and the receiving groove 7 are loosened during use and shock or wear is applied thereto, the receiving groove 7 is cracked. It will occur or eventually be damaged. If this damage occurs, the sleeve 1 needs to be replaced, but at least 2
The operation of the annealing furnace must be stopped for about 3 hours, which causes a great thermal and production loss. Therefore, the prevention of damage to the receiving groove 7 of the cotter metal fitting 4 has been conventionally studied,
Various measures have been proposed. For example, JP-A-1-31
No. 2026 discloses a method of coating the surface of the receiving groove with hexagonal BN, and Japanese Patent Laid-Open No. 3-249122 discloses a sleeve roll having one cotter metal fitting, and Japanese Patent Laid-Open No.
No. 229830 discloses a sleeve having an elongated pin contact hole into which a drive pin is inserted.
In the publication, the sleeve is divided and joined together,
Disclosed is a technique in which a concave portion is provided inside the sleeve, and the sleeve is driven by being caught by the convex portion of the hearth roll shaft.
【０００５】しかしながら、前述の従来技術には、それ
ぞれ次のような問題点がある。すなわち、特開平１−３
１２０２６号公報や特開平１−３１６４１３号公報記載
の技術は、高価なＢＮを使用したり、あるいは構造が複
雑で高コストになり、現実に採用し難い。特開平３−２
２９８３０号公報や上記特開平１−３１６４１３号公報
記載のものは、加工・組立が難しいく、上記同様に高コ
ストになる。また、特開平３−２４９１２２号公報は、
１本のコッタ金具で係止するので、簡単で良いが、その
技術的論拠が不明で実用上の不安があり、これも採用し
難い。However, each of the above-mentioned conventional techniques has the following problems. That is, JP-A 1-3
The techniques described in Japanese Patent No. 12026 and Japanese Patent Application Laid-Open No. 1-316413 use an expensive BN, or have a complicated structure and high cost, which makes it difficult to actually use. JP-A-3-2
No. 29830 or the one described in Japanese Patent Laid-Open No. 1-316413 is difficult to process and assemble, and the cost is high as described above. Further, JP-A-3-249122 discloses
Since it is locked with one cotter metal fitting, it is easy to use, but its technical rationale is unclear and there is concern in practical use, which is also difficult to adopt.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、かかる事情
を鑑み、構造がシンプルで加工・組立、交換が容易、且
つ材料が安価で耐摩耗性や衝撃吸収力に優れたロール用
スリーブの保護材を提供することを目的としている。SUMMARY OF THE INVENTION In view of the above circumstances, the present invention is to protect a roll sleeve which has a simple structure, is easy to process, assemble, and replace, is inexpensive in material, and is excellent in abrasion resistance and shock absorption. The purpose is to provide wood.
【０００７】[0007]
【課題を解決するための手段】発明者は、上記目的を達
成するため鋭意研究し、カーボンスリーブ本体に作用す
る力のＦＥＭ解析（有限要素法）を行った。その結果、
該カーボンスリーブ本体には、その曲げ強度（メーカー
保証値２００ｋｇｆ／ｃｍ2 ）の１／３〜１／４以下の
応力しか発生していない、つまり、強度的には問題ない
が、使用後のカーボンスリーブのＵ字形受溝（以下、単
に受溝という）は、図３（ｂ）に示すように、大きく摩
耗していることが多かった。この事実は、カーボンスリ
ーブの該受溝での亀裂発生が、コッタ金具とカーボンと
の摩耗によりガタが増大し、使用中にその部分にかかる
衝撃力が静荷重の場合の数倍にも達するのが原因と示唆
するものである。そこで、発明者は、カーボンスリーブ
の割損防止・長寿命化には、「受溝の摩耗を防止しガタ
付きを少なくする」ことと判断し、本発明を創案するに
至った。Means for Solving the Problems The inventor has conducted earnest research to achieve the above object, and conducted FEM analysis (finite element method) of the force acting on the carbon sleeve body. as a result,
In the carbon sleeve body, only 1/3 to 1/4 or less of the bending strength (manufacturer-guaranteed value of 200 kgf / cm 2 ) is generated, that is, there is no problem in strength, but carbon after use is used. The U-shaped receiving groove of the sleeve (hereinafter, simply referred to as a receiving groove) was often greatly worn as shown in FIG. 3B. The fact is that the occurrence of cracks in the receiving groove of the carbon sleeve increases due to wear between the cotter metal fittings and the carbon, and the impact force applied to that portion during use reaches several times that in the case of static load. Is the cause. Therefore, the inventor has determined that "preventing wear of the receiving groove and reducing rattling" in order to prevent breakage of the carbon sleeve and to prolong its life, and came up with the present invention.
【０００８】すなわち、本発明は、ロールを覆う円筒状
スリーブの両端から軸方向に刻設され、該スリーブ固定
用コッタ金具を挿入するＵ字形受溝の内面保護材であっ
て、該内面保護部材は、前記スリーブＵ字形溝の両側壁
被覆板及びスリーブ内径当接舌片を有し、該両側壁被覆
板を拡幅方向に付勢する付勢部を備えたＵ字形部材であ
ることを特徴とするロール用スリーブの保護材である。That is, the present invention relates to an inner surface protecting member for a U-shaped receiving groove which is axially engraved from both ends of a cylindrical sleeve covering a roll and into which the sleeve fixing cotter metal fitting is inserted. Is a U-shaped member that has both side wall covering plates of the sleeve U-shaped groove and a sleeve inner diameter abutting tongue piece, and is provided with a biasing portion that biases the both side wall covering plates in the widening direction. It is a protective material for a roll sleeve.
【０００９】また、本発明は、スリーブ材質がカーボン
であることを特徴とするロール用スリーブの保護材であ
り、さらに、その材料を弾力性のある耐熱鋼としたこと
を特徴とするロール用スリーブの保護材でもある。Further, the present invention is a roll sleeve protective material characterized in that the sleeve material is carbon, and further, the material is elastic heat resistant steel. It is also a protective material.
【００１０】[0010]
【作用】本発明では、ロールを覆う円筒状スリーブの両
端から軸方向に刻設され、該スリーブ固定用コッタ金具
を挿入するＵ字形受溝の内面保護材であって、該内面保
護部材は、前記スリーブＵ字形溝の両側壁被覆板及びス
リーブ内径当接舌片を有し、該両側壁被覆板を拡幅方向
に付勢する付勢部を備えたＵ字形部材であるようにした
ので、従来はロール側のコッタ金具とスリーブ側の受溝
が直接触れて摺動していたのを、本保護材で動かないよ
うにでき、スリーブ材の摩耗を最小限に抑えるようにな
る。その結果、スリーブの割損が減少して、寿命が延長
できるようになり、操業の中断時間が大幅に減った。According to the present invention, the inner surface protection member is an inner surface protection member of a U-shaped receiving groove which is axially engraved from both ends of the cylindrical sleeve covering the roll and into which the sleeve fixing cotter metal fitting is inserted. Since the U-shaped member has both side wall covering plates of the sleeve U-shaped groove and the sleeve inner diameter abutting tongue and is provided with a biasing portion for biasing the both side wall covering plates in the widening direction, Since the cotter metal fitting on the roll side and the receiving groove on the sleeve side were in direct contact with each other and slid, the protective material can prevent the sleeve material from being worn, and wear of the sleeve material can be minimized. As a result, the breakage of the sleeve is reduced, the life of the sleeve is extended, and the downtime of the operation is significantly reduced.
【００１１】また、本発明では、スリーブ材質がカーボ
ンであり、また材料を、弾力性のある耐熱鋼としたこと
を特徴とするロール用スリーブの保護材としたので、上
記効果は確実に達成できるようになった。以下、実施例
において、図１〜３に基づき、本発明の内容を説明す
る。Further, in the present invention, the sleeve material is carbon, and the material is a resilient sleeve heat-resistant steel, which is a protective material for the sleeve for rolls. It became so. Hereinafter, the content of the present invention will be described with reference to FIGS.
【００１２】[0012]
【実施例】図１（ａ）〜（ｃ）は、カーボン製スリーブ
１の前記受溝７に、本発明に係る保護材２を取り付けた
組立図である。該保護材２の材質は、ここでは耐熱鋼で
あり、その形状は、帯状材をほぼＵ形に成形してある。
そして、該保護材２のＵ字形奥部は、正確にはΩ字形で
あり、その形状であることにより、両側壁被覆板８が壁
側に常に付勢する力が働くようになっている（以下、そ
の奥部を付勢部６という）。図１（ｃ）は、該付勢部６
を拡大して示したものであるが、スリーブ１側の受溝７
先端部の半径Ｒとロール３に付帯したコッタ金具４の頭
部外径ｒとの関係が、熱膨張を考慮して使用最大温度で
のＲ’とｒ’がほぼ等しくなるように、該付勢部６は設
計される。本実施例では、常温でのＲを２５ｍｍとすれ
ば、カーボンスリーブ１及び保護材２の熱膨張係数が、
それぞれ０．４×１０-6／℃及び１７×１０-6／℃であ
るから、使用最大温度１０００℃に合わせて、Ｒ’＝２
５．０１ｍｍとなり、ｒ’を２５．０１ｍｍにすると、
ｒ（保護材２の付勢部製作時）は２４．５９ｍｍとなっ
た。また、この付勢部６は、該保護材２自体がスリーブ
端部に移動して軸方向へ抜出すことの防止機能も有して
いる。1 (a) to 1 (c) are assembly drawings in which a protective material 2 according to the present invention is attached to the receiving groove 7 of a carbon sleeve 1. As shown in FIG. The material of the protective material 2 is heat-resistant steel here, and the shape thereof is a band-shaped material formed into a substantially U shape.
The U-shaped inner portion of the protective member 2 is precisely an Ω-shaped portion, and by virtue of this shape, a force that constantly urges the side wall covering plate 8 toward the wall side acts ( Hereinafter, the inner part will be referred to as the urging part 6. FIG. 1C shows the urging portion 6.
2 is an enlarged view of the receiving groove 7 on the sleeve 1 side.
The radius R of the tip and the outer diameter r of the head of the cotter metal fitting 4 attached to the roll 3 are set so that R'and r'at the maximum operating temperature are substantially equal in consideration of thermal expansion. The force part 6 is designed. In this embodiment, when R at room temperature is 25 mm, the thermal expansion coefficients of the carbon sleeve 1 and the protective material 2 are
Since they are 0.4 × 10 −6 / ° C. and 17 × 10 −6 / ° C., respectively, R ′ = 2 according to the maximum operating temperature of 1000 ° C.
It becomes 5.01 mm, and if r'is set to 25.01 mm,
r (at the time of manufacturing the biasing portion of the protective member 2) was 24.59 mm. The biasing portion 6 also has a function of preventing the protective material 2 itself from moving to the sleeve end portion and being pulled out in the axial direction.
【００１３】次に、図２（ａ）〜（ｃ）に、該保護材２
の詳細を示す。該保護材２の開放端側は、スリーブの受
溝壁との密着性を良くするため、常にスリーブ壁側に常
に開くよう（付勢するよう）θ＞０にすることが必要で
あり、その力は前記付勢部６と材質の弾性でまかなって
いる。なお、該θの設定は、該保護材２の厚みｔとの関
係でカーボンスリーブに過大な負荷がかからないように
することが望ましく、本実施例では３°とした。また、
本発明に係る保護材２は、使用中にスリーブの半径方向
へ抜ける恐れもあるので、それを防ぐため、該保護材２
には、図２（ｃ）に示すスリーブ内径当接部舌片５（図
では、斜線部）が設けられている。Next, referring to FIGS. 2A to 2C, the protective material 2
The details are shown below. The open end side of the protective member 2 is required to have θ> 0 so that it is always opened (biased) toward the sleeve wall side in order to improve the adhesion with the groove receiving wall of the sleeve. The force is provided by the elasticity of the urging portion 6 and the material. Note that it is desirable to set the θ so that an excessive load is not applied to the carbon sleeve due to the relationship with the thickness t of the protective material 2, and in this embodiment, it is set to 3 °. Also,
The protective material 2 according to the present invention may come off in the radial direction of the sleeve during use.
2 is provided with a sleeve inner diameter abutting portion tongue piece 5 (hatched portion in the figure) shown in FIG.
【００１４】最後になるが、実際に熱延鋼板用焼鈍炉
（炉内温度、９５０℃）で外径１８０ｍｍのハースロー
ルで使用した。その際、カーボンスリーブの前記受溝７
（幅１５ｍｍ）は円周方向に等間隔で４本あったが、い
ずれの受溝７も該保護材２をぴったりと装着できた。そ
の結果、従来の保護材２を使用しなかった場合に比べ、
カーボンスリーブの寿命が３〜４倍になった。Finally, in the annealing furnace for hot-rolled steel sheets (in-furnace temperature, 950 ° C.), a hearth roll having an outer diameter of 180 mm was actually used. At that time, the receiving groove 7 of the carbon sleeve
There were four (width 15 mm) at equal intervals in the circumferential direction, but the protective material 2 could be fitted exactly in any of the receiving grooves 7. As a result, compared to the case where the conventional protective material 2 is not used,
The life of the carbon sleeve has been increased by 3 to 4 times.
【００１５】なお、本実施例は、ロールを焼鈍炉ハース
ロール、スリーブをカーボン製、保護材を耐熱鋼とした
が、本発明はそれらに限るものではない。In this embodiment, the roll was an annealing furnace hearth roll, the sleeve was carbon, and the protective material was heat-resistant steel, but the present invention is not limited to these.
【００１６】[0016]
【発明の効果】以上述べたように、本発明により、構造
がシンプルで加工・組立、交換が容易、且つ材料が安価
で耐摩耗性や衝撃吸収力に優れたロール用スリーブの保
護材を完成させた。その結果、ロール用スリーブとロー
ルとの固定部に、それぞれの材料の熱膨張差によりやむ
を得ず発生するガタを防止できるようになり、スリーブ
の該固定部に発生する亀裂の発生を遅らせて該スリーブ
の寿命を大幅に延長できた。As described above, according to the present invention, a roll sleeve protective material having a simple structure, easy to process, assemble, and replace, inexpensive material, and excellent in abrasion resistance and shock absorption is completed. Let As a result, in the fixing portion of the roll sleeve and the roll, it becomes possible to prevent backlash that is unavoidably generated due to the difference in thermal expansion of the respective materials, delaying the occurrence of cracks occurring in the fixing portion of the sleeve, and The life span has been extended significantly.
【図１】本発明に係る保護材をスリーブに取りつけた状
態を示す図であり、（ａ）は平面図、（ｂ）スリーブ端
部の縦断面図、（ｃ）は保護材付勢部の説明図である。1A and 1B are views showing a state in which a protective material according to the present invention is attached to a sleeve, FIG. 1A is a plan view, FIG. 1B is a longitudinal sectional view of a sleeve end portion, and FIG. 1C is a protective material biasing portion. FIG.
【図２】本発明に係る保護材の詳細であり、（ａ）は平
面図、（ｂ）は側面図、（ｃ）はＡ−Ａ矢視図である。2A and 2B are details of the protective material according to the present invention, in which FIG. 2A is a plan view, FIG. 2B is a side view, and FIG.
【図３】カーボンスーブに刻設した受溝を示す図であ
り、（ａ）は使用前、（ｂ）は使用後の状態を表す。FIG. 3 is a view showing a receiving groove formed in a carbon sove, in which (a) shows a state before use and (b) shows a state after use.
【図４】ロールにスリーブをかぶせた状況を示す図であ
り、（ａ）は側面図、（ｂ）は（ａ）のＢ−Ｂ矢視、
（ｃ）はスリーブをロールから抜出した状況を示す図で
ある。FIG. 4 is a view showing a situation in which a sleeve is covered on a roll, (a) is a side view, (b) is a view taken along the line BB of (a),
(C) is a figure which shows the condition which pulled out the sleeve from the roll.
１ スリーブ ２ 保護材 ３ ロール ４ コッタ金具 ５ 当接舌片 ６ Ｕ字形の付勢部 ７ 受溝 ８ 両側壁被覆板 DESCRIPTION OF SYMBOLS 1 Sleeve 2 Protective material 3 Roll 4 Cotta metal fitting 5 Contact tongue piece 6 U-shaped urging portion 7 Receiving groove 8 Both side wall covering plates
Claims (3)
軸方向に刻設され、該スリーブ固定用コッタ金具を挿入
するＵ字形受溝の内面保護材であって、 該内面保護部材は、前記スリーブＵ字形溝の両側壁被覆
板及びスリーブ内径当接舌片を有し、該両側壁被覆板を
拡幅方向に付勢する付勢部を備えたＵ字形部材であるこ
とを特徴とするロール用スリーブの保護材。1. An inner surface protection member for a U-shaped receiving groove which is axially engraved from both ends of a cylindrical sleeve covering a roll and into which the sleeve fixing cotter metal fitting is inserted, wherein the inner surface protection member is the sleeve. A sleeve for a roll having a U-shaped grooved side wall covering plate and a sleeve inner diameter abutting tongue, and a U-shaped member having a biasing portion for biasing the both side wall covering plates in the width direction. Protective material.
徴とする請求項１記載のロール用スリーブの保護材。2. The protective material for a roll sleeve according to claim 1, wherein the sleeve material is carbon.
を特徴とする請求項１記載のロール用スリーブの保護
材。3. The roll sleeve protective material according to claim 1, wherein the material is elastic heat-resistant steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16375995A JPH0912126A (en) | 1995-06-29 | 1995-06-29 | Protecting material for sleeve for roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16375995A JPH0912126A (en) | 1995-06-29 | 1995-06-29 | Protecting material for sleeve for roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0912126A true JPH0912126A (en) | 1997-01-14 |
Family
ID=15780168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16375995A Withdrawn JPH0912126A (en) | 1995-06-29 | 1995-06-29 | Protecting material for sleeve for roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0912126A (en) |
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-
1995
- 1995-06-29 JP JP16375995A patent/JPH0912126A/en not_active Withdrawn
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| US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
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| US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020903 |