JPH0688052B2 - High temperature ceramics roll - Google Patents
High temperature ceramics rollInfo
- Publication number
- JPH0688052B2 JPH0688052B2 JP63164728A JP16472888A JPH0688052B2 JP H0688052 B2 JPH0688052 B2 JP H0688052B2 JP 63164728 A JP63164728 A JP 63164728A JP 16472888 A JP16472888 A JP 16472888A JP H0688052 B2 JPH0688052 B2 JP H0688052B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- annular body
- ceramic
- high temperature
- metal
- 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.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 title claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000011800 void material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
- B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、セラミックスの環状体を表面部材とするロ
ールであって高温下においても破損のおそれなく使用で
きる耐磨耗性ロールに関するものである。Description: TECHNICAL FIELD The present invention relates to a wear-resistant roll that uses a ceramic annular body as a surface member and that can be used even at high temperatures without fear of damage. .
（従来技術） 圧延ロール或はガイドロールは高温下で使用されるため
一般に金属製のロールが使用されているが、耐磨耗性が
充分でなく寿命が比較的短かい欠点がある。(Prior Art) Since a rolling roll or a guide roll is used at a high temperature, a metal roll is generally used, but it has a drawback that it has insufficient abrasion resistance and a relatively short life.
この欠点を解消するためにSi3N4（サイアロンを含む）
などの高温度で耐蝕性があり軽量でしかも高硬度耐磨耗
性のあるセラミックスをロールの表面部材とすることが
考えられ、試験的に実施されている。Si 3 N 4 (including sialon) is used to eliminate this drawback.
It is considered to use a ceramic that has corrosion resistance at high temperature, is lightweight, and has high hardness and abrasion resistance as the surface member of the roll, and is being tested.
しかしながら、Si3N4などのセラミックス質はロールの
シャフト又はボス部材となる金属と熱膨張係数が異なる
ため高温下で使用中に破損し易いという欠点がある。However, since ceramics such as Si 3 N 4 have a coefficient of thermal expansion different from that of the metal that forms the shaft or boss member of the roll, it has a drawback that it is easily damaged during use at high temperatures.
即ち、高温下における金属とセラミックス質の熱膨張の
差は約１×10-5/℃であって室温で嵌合又は組込まれた
セラミックス製環状ロール表面部材は高温下で使用中、
金属体の熱膨張によって環状体の内側部に引張り応力を
生じて破損するのである。That is, the difference in thermal expansion between metal and ceramics at high temperature is about 1 × 10 −5 / ° C., and the ceramic annular roll surface member fitted or incorporated at room temperature is in use at high temperature.
The thermal expansion of the metal body causes a tensile stress in the inner portion of the annular body, resulting in damage.
（目的） 本発明は、セラミックス環状体が破損する原因である金
属とセラミックスの熱膨張差を吸収する支持構造を備
え、高温下で使用しても安定性のある高硬度、耐磨性、
セラミックスロールを提供するものである。(Purpose) The present invention is provided with a support structure that absorbs a difference in thermal expansion between a metal and a ceramic, which is a cause of damage to a ceramic annular body, and has high hardness, abrasion resistance, and stability that are stable even when used at high temperatures.
A ceramic roll is provided.
（解決手段） 上記の目的を達成するため金属の熱膨張量がセラミック
のそれより大きいことを考慮した種々の支持構造につい
て研究した結果セラミックス環状体の内周側の両側面に
対称的な挟圧用テーパ面を形成すると共に前記環状体内
周面とこれに対面する金属製支持部材の表面との間に該
支持部材の膨張を許容する隙間を設けて固定することが
有効であることが判明した。(Solution) As a result of researching various supporting structures in consideration of the fact that the thermal expansion amount of metal is larger than that of ceramics in order to achieve the above-mentioned object, the results are shown in FIG. It has been found that it is effective to form the tapered surface and fix it by providing a gap between the peripheral surface of the annular body and the surface of the metallic support member facing the annular surface to allow expansion of the support member.
而して、上記テーパ角度θは該環状体の中心軸（即ちロ
ールの回転軸）上であって環状体の中央横断面との交点
Ｐから前記中央横断面に対して５゜以上好ましくは10゜
以上で、必要な環状体挟着力が得られる角度である。Thus, the taper angle θ is on the central axis of the annular body (that is, the rotation axis of the roll) from the intersection point P with the central cross section of the annular body to the central cross section of 5 ° or more, preferably 10 °. It is an angle at which a necessary annular body clamping force can be obtained at a degree of ≧ °.
また、隙間距離δは、ロール使用温度において両対面部
が非接触状態を保持しうる距離である。In addition, the gap distance δ is a distance at which both facing parts can maintain a non-contact state at the roll operating temperature.
環状体を構成するセラミックスの材質はロールの加工対
象、例えば被圧延金属などによりSi3N4、SiC、ZrB2、Cr
3C2、AlNなどから選択され、その成型法は任意である。The material of the ceramics that constitutes the annular body is Si 3 N 4 , SiC, ZrB 2 , Cr depending on the object to be processed by the roll, such as the metal to be rolled.
It is selected from 3 C 2 , AlN, etc., and its molding method is arbitrary.
ロールの挟持支持手段は前記テーパ面の一方と接面する
テーパ面を有する固定部材と他のテーパ面と接面し、固
定部材に螺合する締着リングとで構成され、固定部材は
ロール軸と一体に形成されてもよいし、ロール軸に嵌着
されたリング体でもよい。The roll sandwiching and supporting means is composed of a fixing member having a tapered surface in contact with one of the tapered surfaces and a fastening ring in contact with the other tapered surface and screwed to the fixing member, and the fixing member is a roll shaft. It may be integrally formed with or a ring body fitted to the roll shaft.
（実施例１） 第１図は圧延ロールの実施例である。(Example 1) FIG. 1 is an example of a rolling roll.
（１）はセラミックス環状体（内径35mm）であって、Si
3N4（熱膨張係数４×10-6/℃）で成形されている。(1) is a ceramic annular body (inner diameter 35 mm),
It is molded with 3 N 4 (coefficient of thermal expansion 4 × 10 -6 / ° C).
（２）はロールのシャフト（SKS3、熱膨張係数17×10-6
/℃）である。（３）はシャフトと一体に形成された固
定手段となるフランジ、（４）は固定部材のフランジに
対向する位置でシャフトに螺合（５）された可動部材と
なる締着リングであってフランジとの間にセラミック環
状体（１）を挟着支持する。(2) is the roll shaft (SKS3, coefficient of thermal expansion 17 × 10 -6
/ ° C). (3) is a flange that is integrally formed with the shaft and serves as a fixing means, and (4) is a fastening ring that is a movable member screwed (5) onto the shaft at a position facing the flange of the fixed member, and is a flange. The ceramic annular body (1) is sandwiched and supported between and.
（1a）（1b）は環状体の内周側の両側面に形成したテー
パ面、（６）（７）は夫々に接面するテーパ面である。(1a) and (1b) are tapered surfaces formed on both side surfaces on the inner peripheral side of the annular body, and (6) and (7) are tapered surfaces in contact with each other.
テーパ角θは、シャフトの中心軸上の点Ｐの垂線Ｑに対
して約15゜である。The taper angle θ is about 15 ° with respect to the perpendicular Q of the point P on the central axis of the shaft.
空隙距離δは0.20mmに設定した。The void distance δ was set to 0.20 mm.
上記の圧延ロールは、常温下で組立て400℃下で貴金属
圧延ロールとして使用したが熱膨張による破損もなく使
用中の圧延荷重や熱衝撃にも充分耐えることができた。The above-mentioned rolling roll was assembled at room temperature and used as a noble metal rolling roll at 400 ° C., but it could withstand rolling load and thermal shock during use without being damaged by thermal expansion.
（実施例２） 第２図はガイドロールの実施例である。(Example 2) FIG. 2 shows an example of a guide roll.
（１）は、セラミックス環状体（内径＝150mm）であ
り、実施例１と同一素材である。(1) is a ceramic annular body (inner diameter = 150 mm), which is the same material as in Example 1.
（13）は、ロール軸（２）に軸着された固定リングであ
って、テーパ部（13a）の反対面（13b）側に嵌合締付リ
ング（14）が固定リングに対して螺合（15）されて両者
間において環状体を挟圧支持している。(13) is a fixing ring that is axially attached to the roll shaft (2), and a fitting tightening ring (14) is screwed to the fixing ring on the opposite surface (13b) side of the tapered portion (13a). (15) The annular body is clamped and supported between the two.
空隙距離は0.70mmである。The void distance is 0.70 mm.
上記ガイドロールを500℃での銅線圧延工程に用いても
破損はみられなかった。No damage was observed when the above guide roll was used in the copper wire rolling process at 500 ° C.
（効果） 本発明ロールは前記した如き構成を有しセラミックス環
状体及びその固定部材の挟圧テーパ角をロール中心軸上
の点Ｐに対して点対称に形成してあるから両者が高温下
で夫々膨張してもこれによって両者の接触状態が変化す
ることなく常にテーパ面の全面が接触して相互に滑動す
るだけであるから環状体に熱変形による応力を生じさせ
ることがないのである。(Effects) The roll of the present invention has the above-described structure and the clamping taper angle of the ceramic annular body and its fixing member is formed point-symmetrically with respect to the point P on the center axis of the roll. Even if each expands, the contact state between the two does not change and the entire surfaces of the tapered surfaces are always in contact with each other and slide with respect to each other. Therefore, stress due to thermal deformation does not occur in the annular body.
また、必要充分な空隙を設けてあるから金属部材の膨張
が大きくても金属部材が環状体に接することがなく環状
体に外力を与えない効果がある。Further, since the necessary and sufficient voids are provided, even if the expansion of the metal member is large, the metal member does not come into contact with the annular body, and the external force is not applied to the annular body.
これらの結果本発明ロールの寿命は大巾に改善され通常
の使用では半永久的に使用可能である。As a result, the life of the roll of the present invention is greatly improved and can be semipermanently used in normal use.
第１図、第２図は、夫々実施例ロールの半断面図であ
る。（１）はセラミックス環状体、（２）はロール軸
（1a）（1b）はテーパ面。FIG. 1 and FIG. 2 are half cross-sectional views of the example roll. (1) is a ceramic annular body, (2) is a roll shaft (1a) (1b) is a tapered surface.
Claims (1)
よって支持されて構成されるロールにおいて、セラミッ
クス環状体の内周側の両側面に、該環状体の中心軸と環
状体の厚み方向中央横断面との交点から夫々同一角度で
対称的なテーパ面が形成されてロール軸に設けられた固
定手段によって挟着支持されると共に前記環状体の内周
面と前記固定手段との間に使用高温下において接触しな
い程度の空隙が設けられてなる高温セラミックスロー
ル。1. A roll having a ceramic annular body supported by fixing means made of metal, wherein a central axis of the annular body and a center crossing in the thickness direction of the annular body are provided on both side surfaces on the inner peripheral side of the ceramic annular body. Symmetrical tapered surfaces are formed at the same angle from the intersections with the surfaces and are sandwiched and supported by the fixing means provided on the roll shaft, and the high temperature between the inner peripheral surface of the annular body and the fixing means is used. A high-temperature ceramic roll provided with a void that does not contact the lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63164728A JPH0688052B2 (en) | 1988-07-01 | 1988-07-01 | High temperature ceramics roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63164728A JPH0688052B2 (en) | 1988-07-01 | 1988-07-01 | High temperature ceramics roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0215809A JPH0215809A (en) | 1990-01-19 |
| JPH0688052B2 true JPH0688052B2 (en) | 1994-11-09 |
Family
ID=15798772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63164728A Expired - Lifetime JPH0688052B2 (en) | 1988-07-01 | 1988-07-01 | High temperature ceramics roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0688052B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0757367B2 (en) * | 1988-10-14 | 1995-06-21 | 株式会社日立製作所 | Ceramic sleeve assembly type rolling roll |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5282658A (en) * | 1975-12-29 | 1977-07-11 | Fuji Dies Kk | Hot rolling roll |
| DE2618884A1 (en) * | 1976-04-29 | 1977-11-03 | Hertel Guenther | ROLLER ARRIVED WITH A CARBIDE METAL WORK JACKET, IN PARTICULAR HOT ROLLER |
| JPS5437791Y2 (en) * | 1978-09-02 | 1979-11-12 |
-
1988
- 1988-07-01 JP JP63164728A patent/JPH0688052B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0215809A (en) | 1990-01-19 |
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