JPS59107757A - Ceramic roll for continuous casting - Google Patents
Ceramic roll for continuous castingInfo
- Publication number
- JPS59107757A JPS59107757A JP21801582A JP21801582A JPS59107757A JP S59107757 A JPS59107757 A JP S59107757A JP 21801582 A JP21801582 A JP 21801582A JP 21801582 A JP21801582 A JP 21801582A JP S59107757 A JPS59107757 A JP S59107757A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- roll
- ceramic
- shaft
- tapered
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は連続鋳造設備の各種ロールに関する・ものであ
る。従来この種のロールには金属ロールが使用されてい
るが、第１図に示す連続明透設備においてモールド１の
直下にちるフットロール２、ガイドロール３などは凝固
直後の高温鋳片（１０００〜１３００℃程度）と、直接
接触するために通常は内部水冷もしくは外部散水されて
いる。しかしながら、鋳片と接触する面は、赤熱鋳片よ
シ加熱されるが、反対側は冷却によシ低温度になってい
る。両者の温度変化に基づく熱応力によるロールの若干
の曲９等が発生し易い条件を含んで使用されているのが
実態である。ロールの変形があると鋳片とロール間の接
触面圧力に変動が出るために、鋼の内部欠陥が発生する
要因ともなっている。また、従来の金属ロールでは熱伝
導率が高いだめに、鋳片よシ抜熱する量が大きい欠点が
あった。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to various rolls for continuous casting equipment. Conventionally, metal rolls have been used for this type of roll, but in the continuous transparent equipment shown in Fig. 1, the foot roll 2, guide roll 3, etc. that are located directly below the mold 1 are used to carry hot slabs (1000~ (approximately 1,300°C) and are usually internally water-cooled or externally sprayed with water for direct contact. However, while the surface in contact with the slab is heated by the red-hot slab, the opposite side is cooled to a lower temperature. The actual situation is that the rolls are used under conditions that tend to cause slight bending of the rolls 9 due to thermal stress caused by temperature changes between the two. Deformation of the rolls causes fluctuations in the contact pressure between the slab and the rolls, which is also a factor in the occurrence of internal defects in the steel. Furthermore, although conventional metal rolls have high thermal conductivity, they have the disadvantage of a large amount of heat being removed from the slab.
そこで熱伝導率の小さいセラミックロールを用いること
によシ、ロールが１０片から奪う熱量は大巾に低減する
ことができるものである。まだ、セラミックロールは高
温度に対して強いためにロールを冷却する必要性がない
ことから、ロール内冷水丑だは外部散水を全く省略する
ことが可能となる。このために水冷効果による鋳片の温
度降下がないことから、高い温度で鋳造することができ
るようになる。さらにセラミックロールは、たわみがほ
とんどないことから、ロール変形による接触面圧力の変
動も生じないから、内部欠陥の生成なしに鋳片を製造で
きる。Therefore, by using a ceramic roll with low thermal conductivity, the amount of heat taken by the roll from the 10 pieces can be significantly reduced. Furthermore, since ceramic rolls are resistant to high temperatures, there is no need to cool the rolls, so it is possible to completely omit cold water inside the rolls or external water sprinkling. For this reason, there is no temperature drop in the slab due to the water-cooling effect, making it possible to cast at a high temperature. Furthermore, since ceramic rolls have almost no deflection, there is no variation in contact surface pressure due to roll deformation, so slabs can be manufactured without generating internal defects.
以上の様な利点がセラミックロールにある。而して従来
のセラミックロールは金属軸本体にセラミックスを一層
外挿しだ構成を採っておシ、このようなセラミックロー
ルでは金属軸本体との熱膨眼差によるヒビ割れ、剥離等
の欠陥があり、実用に耐えなかったものである。Ceramic rolls have the advantages mentioned above. However, conventional ceramic rolls have a structure in which ceramics are further extrapolated onto the metal shaft body, and such ceramic rolls have defects such as cracking and peeling due to the difference in thermal expansion with the metal shaft body. , which could not be put to practical use.
本発明の連続鋳造田七ラミックロールは外挿するセラミ
ックスを多層構造としたことを特徴とし、金属軸と接す
る制置については、熱膨張差による応力を吸収可能なも
のとし、その外側に耐摩耗性及び強度大なるセラミック
スを・配することが好ましい。The continuous casting Tashichi ramic roll of the present invention is characterized by having a multi-layered structure of extraceramic ceramics, and the restraint in contact with the metal shaft is capable of absorbing stress due to the difference in thermal expansion, and the outside is made of abrasion-resistant material. It is preferable to use ceramics which have high properties and strength.
次に第２図、第３図に示す実施例によυ本発明の構成を
詳細に説明する。第２図、第３図における金属軸４には
ロール巾方向に内側セラば、クス円筒５が外挿され、セ
ットしやすい様に金属軸にテーパーをつけ内側セラミッ
クス円筒５の内外面についてもテーパーをつける。外側
セラミ、クス円筒６についても同様のテーパーをつけて
セット作業を容易にする。内組トセラミックス円筒５、
外側セラミックス円筒６を金属軸と固定するため固定用
の金属治具７でとめる。内側セラミックス円筒５の材質
については割れ防止や金属軸４の本体に生ずる熱変形を
吸収するためＡｔ２０５−Ｃ系、Ｚ ｒ Ｏ２−Ｃ系、
ＭｇＯ−’Ｃ系、８１−Ｃ質等の熱膨張の低い材質を用
いることが好ましく、父外側セラミックス円筒６につい
ては、例えばｈｔ２ｏ、、 ｓｉｏ□、ＭｇＯ。Next, the structure of the present invention will be explained in detail with reference to the embodiments shown in FIGS. 2 and 3. The metal shaft 4 in FIGS. 2 and 3 is fitted with an inner ceramic cylinder 5 in the roll width direction, and the metal shaft is tapered to make it easier to set, and the inner and outer surfaces of the inner ceramic cylinder 5 are also tapered. Attach. A similar taper is applied to the outer ceramic cylinder 6 to facilitate setting work. Inner assembled ceramic cylinder 5,
In order to fix the outer ceramic cylinder 6 to the metal shaft, a fixing metal jig 7 is used. Regarding the material of the inner ceramic cylinder 5, in order to prevent cracking and absorb thermal deformation that occurs in the main body of the metal shaft 4, At205-C type, Z r O2-C type, etc.
It is preferable to use a material with low thermal expansion such as MgO-'C type or 81-C type, and for the outer ceramic cylinder 6, for example, ht2o, sio□, MgO.
ＺｒＯ２，ＳｉＣ，＋ ｓｔ、ｒｔｒ４． ＢＮ＋ Ｂ
４Ｃ＋ ５ｉａｌｏｎ、 ＡｔＮ等、耐摩耗及び強度の
犬なるものを用いることが好ましい。尚これらのセラミ
ックロールは縦方向に分割してもよい。父、ロール本体
、内側セラミック円筒５及び外側セラミック円筒６との
接合には適当な耐火モルタルを使用してもよい。ZrO2, SiC, + st, rtr4. BN+B
It is preferable to use a wear-resistant and strong material such as 4C+5ialon, AtN, etc. Incidentally, these ceramic rolls may be divided in the vertical direction. A suitable refractory mortar may be used for joining the main body, the roll body, the inner ceramic cylinder 5 and the outer ceramic cylinder 6.
次に具体的な実施例について述べる。Next, a specific example will be described.
第２図に示す各円筒５，６に表１に示すように内側セラ
ミック円筒５としてＡｔ２０３−Ｃ系、外側セラミ、り
円筒６としてＡｔ２０５質をセットし、セラミックロー
ルを形成した。このセラミックロールをローラーチーグ
ル用ローラーとして１２ケ月使用した。使用後もクラッ
クの発生も認められず摩耗も殆んどなく良好な結果を得
た。As shown in Table 1, each of the cylinders 5 and 6 shown in FIG. 2 was set with At203-C material as the inner ceramic cylinder 5, At205 material as the outer ceramic cylinder, and At205 material was set as the outer ceramic cylinder 6 to form a ceramic roll. This ceramic roll was used as a roller for Roller Cheagle for 12 months. Good results were obtained with no cracks observed and almost no wear after use.
また、このロールを用いた結果、鋳片の温度履歴は従来
の金属ロールを用いた場合に比較して急冷点がなくなっ
ておシ、穏やかな温度変化が可能となり、さらに切片の
出片温度も上げられるようになった。In addition, as a result of using this roll, the temperature history of the slab has no quenching point compared to when conventional metal rolls are used, allowing for gentle temperature changes, and the temperature of the slab when it comes out is also lower. Now it can be raised.
以上、本発明によるロールを実設備に適用しだ結果、熱
に強いセラミックスの特徴が生かされ、ロールの寿命は
従来のロールに比較し５倍以上に延長し、また金属ロー
ルのようにロールとの接触による鋳片表面温度の急変が
無くなったために、温度の急変動に基づく熱応力割れは
解消ぶれ、７５）つ、冷却による奪熱が抑制され、高い
温度の鋳片を製造することができるようになったもので
ある。As described above, as a result of applying the roll according to the present invention to actual equipment, the characteristics of heat-resistant ceramics are utilized, the life of the roll is extended by more than five times compared to conventional rolls, and the roll life is longer than that of conventional rolls. Since sudden changes in the surface temperature of the slab due to contact are eliminated, thermal stress cracking due to sudden changes in temperature is eliminated,75) and heat removal due to cooling is suppressed, making it possible to produce slabs at high temperatures. This is what happened.
表 １
以上はセラミックス円筒を２層に外挿した例であるが本
発明はこれに限ることなく更に３層、４層等多層構造と
するものを含むものである。Table 1 The above is an example in which the ceramic cylinder is extrapolated into two layers, but the present invention is not limited to this, but also includes multilayer structures such as three layers and four layers.
例えば３層構造とする場合金属軸４に接する最内側のセ
ラミック円筒は２層の場合と同様に熱膨張による応力を
吸収可能なものとし、最外側に用いるセラミック円筒の
材質も２）＠の場合と同様に耐摩耗性及び強度の犬なる
ものを使用し、その中間に位置するセラミックス円筒は
最内、最外に用いるセラミックスのように特に材質につ
いて規ａｉｌｌせず比較的安価なものを用いることがで
きる。For example, in the case of a three-layer structure, the innermost ceramic cylinder in contact with the metal shaft 4 should be capable of absorbing stress due to thermal expansion, as in the case of two layers, and the material of the outermost ceramic cylinder should also be 2) @. Similarly, a material with wear resistance and strength is used, and the ceramic cylinder located in the middle is made of relatively inexpensive materials without any particular restrictions, such as the innermost and outermost ceramics. Can be done.
第１図は連続鋳造設備の概略図、第２図は本発明実施例
ロールの側断面図、第３図は第２図のＡ−Ａ′断面図で
ある。
１：モールド ２：フットロール３ニガイドロー
ル ４：金属軸
５ ：内側セラミック円筒 ６：内側セラミック円
筒７：金属治具。
第１図
第２図
Ａ゛
第３図FIG. 1 is a schematic diagram of continuous casting equipment, FIG. 2 is a sectional side view of a roll according to an embodiment of the present invention, and FIG. 3 is a sectional view taken along line A-A' in FIG. 1: Mold 2: Foot roll 3 Ni guide roll 4: Metal shaft 5: Inner ceramic cylinder 6: Inner ceramic cylinder 7: Metal jig. Figure 1 Figure 2 A゛ Figure 3
Claims (1)
筒を多層構造状に外挿したことを特徴とする連続鋳造用
セラミックロール。A ceramic roll for continuous casting, which is characterized by having a metal shaft at the center and a cylinder made of ceramics placed on the outside in a multilayered structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21801582A JPS59107757A (en) | 1982-12-13 | 1982-12-13 | Ceramic roll for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21801582A JPS59107757A (en) | 1982-12-13 | 1982-12-13 | Ceramic roll for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59107757A true JPS59107757A (en) | 1984-06-22 |
Family
ID=16713284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21801582A Pending JPS59107757A (en) | 1982-12-13 | 1982-12-13 | Ceramic roll for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59107757A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61150761A (en) * | 1984-12-25 | 1986-07-09 | Kawasaki Steel Corp | Carrying roller preventing heat loss from high temperature steel billet |
| CN115625320A (en) * | 2022-12-19 | 2023-01-20 | 四川信息职业技术学院 | Method for reducing plastic deformation of die and foamed aluminum forming die |
-
1982
- 1982-12-13 JP JP21801582A patent/JPS59107757A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61150761A (en) * | 1984-12-25 | 1986-07-09 | Kawasaki Steel Corp | Carrying roller preventing heat loss from high temperature steel billet |
| CN115625320A (en) * | 2022-12-19 | 2023-01-20 | 四川信息职业技术学院 | Method for reducing plastic deformation of die and foamed aluminum forming die |
| CN115625320B (en) * | 2022-12-19 | 2023-04-07 | 四川信息职业技术学院 | Method for reducing plastic deformation of die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100325557B1 (en) | Plates with ceramic layers for apparatuses for the continuous casting of flat thin products and process for the manufacture thereof | |
| JPS59107757A (en) | Ceramic roll for continuous casting | |
| US4747775A (en) | Skid beam for heating furnaces of walking beam type | |
| JP3785449B2 (en) | Refractory structure of blast furnace cast iron | |
| JP2003114090A (en) | Cement rotary kiln and repair method therefor | |
| JPH08260018A (en) | Monolithic refractory lining structure for torpedo ladle car | |
| JP3715184B2 (en) | Stave cooler and manufacturing method of double pipe used therefor | |
| JPS5964153A (en) | Construction of cooling type slide valve plate for controlling flow rate of molten steel | |
| JPS6156761A (en) | Roll for conveying high-temperature material and its production | |
| JPS5870959A (en) | Roll for continuous casting | |
| JPS61115662A (en) | Metal-ceramic composite cylinder and its production | |
| JPS6123711A (en) | Skid button for heating furnace | |
| JP2660467B2 (en) | Heat-resistant insulator for induction heating coil | |
| JPH01224142A (en) | Mold for continuous casting | |
| JPS6155409A (en) | High-temperature material conveying roll | |
| JPH0571347B2 (en) | ||
| JPH0344367Y2 (en) | ||
| JP2001182892A (en) | Heat insulating structure of water jacket pipe | |
| JPS61261422A (en) | Skid button for heating furnace | |
| SU1425422A1 (en) | Furnace roller | |
| JPS60216967A (en) | Composite ceramic-iron-base alloy body | |
| JP2727937B2 (en) | Cast-in method of Steve cooler for cooling blast furnace body | |
| JPS55156654A (en) | Roll for continuous casting | |
| JPH0436062B2 (en) | ||
| JPH02160104A (en) | Structure for body of high temperature roll |