JPH08325086A - Oxidation preventing coating material for refractory for casting - Google Patents
Oxidation preventing coating material for refractory for castingInfo
- Publication number
- JPH08325086A JPH08325086A JP15381195A JP15381195A JPH08325086A JP H08325086 A JPH08325086 A JP H08325086A JP 15381195 A JP15381195 A JP 15381195A JP 15381195 A JP15381195 A JP 15381195A JP H08325086 A JPH08325086 A JP H08325086A
- Authority
- JP
- Japan
- Prior art keywords
- coating material
- refractory
- casting
- layer
- coating
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
- C04B41/526—Multiple coating or impregnation with materials having the same composition but different characteristics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｃを含む溶鋼等からの
受熱により鋳造用耐火物が酸化されるのを防止するため
の酸化防止コート材の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an antioxidant coating material for preventing the refractory for casting from being oxidized by the heat received from molten steel containing C and the like.
【０００２】[0002]
【従来の技術】従来、多層塗りの酸化防止コート材とし
て、特開平５−４３３５４号公報に開示されているもの
がある。多層塗りの酸化防止コートの場合は、最外層か
ら順に耐火物に向ってガラス化温度の高いコート材を塗
布し、外表面の受ける熱影響によって外表面からコート
材をガラス化させ、下層にあるコート材との界面で反応
させて連続的にガラス化させ、低温域から高温域までを
ガラス被膜によって耐火物の酸化を防いでいる。2. Description of the Related Art Conventionally, as an antioxidant coating material for multi-layer coating, there is one disclosed in JP-A-5-43354. In the case of a multi-layered antioxidant coat, a coating material with a high vitrification temperature is applied in order from the outermost layer toward the refractory, and the coating material is vitrified from the outer surface due to the heat effect on the outer surface, which is in the lower layer. It reacts at the interface with the coating material to continuously vitrify, and the glass coating prevents oxidation of the refractory from the low temperature region to the high temperature region.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記のよう
に酸化防止コート材を多層塗りした耐火物の表面は、熱
影響によりガラス化するため、ストッパーとノズルの嵌
合部などのように耐火物同士が接したり、離れたりする
必要がある場合に、酸化防止コート材が接着剤の役割を
果たし、溶着してしまう場合がある。また、溶鋼と接す
る浸漬ノズルなどにおいては、酸化防止コート材の低融
点物質が低粘性化し、モールド内に滞留し、溶鋼の凝固
に悪影響を与え、特にスラブ厚が薄い場合、モールド自
体が小型の場合は、鋳造を阻害することもある。そこで
本発明は、耐火物同士の溶着、低融点、低粘性物質の
鋼、あるいは鋳造に与える悪影響を解決することのでき
る鋳造用耐火物の酸化防止コート材を提供しようとする
ものである。By the way, since the surface of the refractory material coated with the multi-layered antioxidizing coating material as described above vitrifies due to the influence of heat, the refractory material such as the fitting portion of the stopper and the nozzle is When it is necessary to contact each other or separate from each other, the antioxidant coating material may function as an adhesive agent and may be welded. In addition, in a dipping nozzle that comes into contact with molten steel, the low melting point substance of the antioxidant coating material becomes less viscous and stays in the mold, adversely affecting the solidification of the molten steel, and especially when the slab thickness is thin, the mold itself is small. In some cases, it may hinder casting. Therefore, the present invention is intended to provide an oxidation-resistant coating material for refractory for casting, which can solve the adverse effects on welding of refractories to each other, steel of low melting point and low viscosity substance, or casting.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
の本発明の鋳造用耐火物の酸化防止コート材は、ガラス
化点の異なる２層以上のコート材から構成され、かつ第
１層と最外層のコート材のガラス化点には５００℃以上
の差があり、第１層よりも上層のコート材のガラス化点
の方が高温であることを特徴とするものである。この鋳
造用耐火物の酸化防止コート材にあって、最外層のコー
ト材の成分は、Ａｌ2 Ｏ3 ６０〜９８ｗｔ％、ＳｉＯ2
２〜４０ｗｔ％であることが好ましい。An antioxidant coating material for a refractory for casting according to the present invention for solving the above-mentioned problems is composed of two or more coating materials having different vitrification points, and a first layer. The vitrification point of the coating material of the outermost layer has a difference of 500 ° C. or more, and the vitrification point of the coating material of the upper layer is higher than that of the first layer. In this antioxidant coating material for a refractory for casting, the components of the coating material of the outermost layer are Al 2 O 3 60 to 98 wt%, SiO 2
It is preferably 2 to 40 wt%.
【０００５】最外層のコート材の成分を上記のように限
定した理由について説明すると、Ａｌ2 Ｏ3 ６０ｗｔ％
未満ではガラス化点が低下し、９８ｗｔ％を超えると高
温での接着強度を保てず、またＳｉＯ2 ２ｗｔ％未満で
は高温での接着強度を保てず、４０ｗｔ％を超えるとガ
ラス化点を低下し、低融点物質を作る可能性があるから
で、結局Ａｌ2 Ｏ3 ６０〜９８ｗｔ％、ＳｉＯ2 ２〜４
０ｗｔ％であることが、高温での接着強度を保つ上で好
適である。Explaining the reason why the components of the coating material of the outermost layer are limited as described above, Al 2 O 3 60 wt%
If it is less than 98% by weight, the vitrification point decreases, and if it exceeds 98 wt%, the adhesive strength at high temperature cannot be maintained. If it is less than 2 wt% SiO 2 , the adhesive strength at high temperature cannot be maintained. Since it may be lowered and a low melting point substance may be produced, Al 2 O 3 60-98 wt%, SiO 2 2-4
The content of 0 wt% is suitable for maintaining the adhesive strength at high temperature.
【０００６】[0006]
【作用】上記構成の本発明の鋳造用耐火物の酸化防止コ
ート材は、鋳造用耐火物に、第１層のコート材を下塗り
することにより鋳造用耐火物の酸化が防止され、この下
塗りした鋳造用耐火物に、高いガラス化点の第２層ハイ
アルミナ系のコート材を上塗りすることにより鋳造用耐
火物同士の溶着が防止され、またこのように耐火防止コ
ート材を塗布した鋳造用耐火物を連続鋳造機に使用して
も、下塗りコート材からの低融点、低粘性物質の流れ出
しが防止されて、モールド内へ流れ込むことがなくな
る。The oxidation-resistant coating material for a refractory material for casting according to the present invention having the above-mentioned structure prevents oxidation of the refractory material for casting by undercoating the coating material for the first layer on the refractory material for casting. By overcoating the refractory for casting with the second layer high alumina coating material having a high vitrification point, the welding of the refractory for casting is prevented, and the refractory for casting is coated with the fireproof coating material. Even when the product is used in a continuous casting machine, the low melting point and low viscous substance is prevented from flowing out of the undercoating coating material, and does not flow into the mold.
【０００７】[0007]
【実施例】本発明の鋳造用耐火物の酸化防止コート材の
実施例について説明する。 ＜実施例１＞内装タイプの浸漬ノズル（アルミナ−黒鉛
製）に、下塗りのコート材として、Ａｌ2 Ｏ3 １０ｗｔ
％，ＳｉＯ2 ５０ｗｔ％，Ｒ2 Ｏ１０ｗｔ％，ＲＯ＋Ｒ
2 Ｏ3 ３０ｗｔ％で構成し、無機バインダーで調整した
ガラス化点５００℃のコート材を塗布し、この上に上塗
りコート材として、Ａｌ2 Ｏ3 ９０ｗｔ％，ＳｉＯ2１
０ｗｔ％で構成し、無機バインダーで調整したガラス化
点１７００℃のコート材を塗布した。このようにコート
材を塗布した浸漬ノズルは、溶鋼中でハイアルミナ製ス
トッパーとの溶着が無く、コート材塗布による酸化防止
効果も良好であった。EXAMPLES Examples of the antioxidant coating material of the refractory for casting of the present invention will be described. <Example 1> Al 2 O 3 10 wt as an undercoating material was applied to an interior type immersion nozzle (made of alumina-graphite).
%, SiO 2 50 wt%, R 2 O 10 wt%, RO + R
A coating material composed of 2 O 3 30 wt% and adjusted with an inorganic binder and having a vitrification point of 500 ° C. is applied, and Al 2 O 3 90 wt% and SiO 2 1 are used as a top coating material.
A coating material having a vitrification point of 1700 ° C. and composed of 0 wt% and adjusted with an inorganic binder was applied. The immersion nozzle coated with the coating material in this manner did not adhere to the high-alumina stopper in the molten steel, and the effect of preventing oxidation by coating the coating material was good.
【０００８】＜実施例２＞浸漬ノズル（ＺｒＯ2 −黒鉛
製）の外表面に、下塗りのコート材として、Ａｌ2 Ｏ3
１５ｗｔ％，ＳｉＯ2 ６０ｗｔ％，Ｒ2 Ｏ２５ｗｔ％で
構成し、無機バインダーで調整したガラス化点１１００
℃のコート材を塗布し、この上に上塗りコート材とし
て、Ａｌ2 Ｏ3 ９５ｗｔ％，ＳｉＯ2 ５ｗｔ％で構成
し、無機バインダーで調整したガラス化点１７５０℃の
コート材を塗布した。このようにコート材を塗布した浸
漬ノズルを、薄スラブ連続鋳造機で使用したところ、下
塗りコート材中の低融点物質のモールド内への流れ込み
が無く、良好な品質の鋼が得られた。Example 2 On the outer surface of the dipping nozzle (made of ZrO 2 -graphite), Al 2 O 3 was used as an undercoating material.
Vitrification point 1100 composed of 15 wt%, SiO 2 60 wt%, R 2 O 25 wt% and adjusted with an inorganic binder
A coating material having a vitrification point of 1750 ° C., which was composed of Al 2 O 3 95 wt% and SiO 2 5 wt%, and which was adjusted with an inorganic binder, was applied thereon. When the dipping nozzle coated with the coating material was used in a thin slab continuous casting machine, a low-melting-point substance in the undercoat coating material did not flow into the mold, and good quality steel was obtained.
【０００９】[0009]
【発明の効果】以上の説明で判るように本発明の鋳造用
耐火物の酸化防止コート材は、鋳造用耐火物に塗布する
ことにより、耐火物同士の溶着を防止することができ、
また、この酸化防止コート材を塗布した鋳造用耐火物を
連続鋳造機に使用した際、酸化防止コート材から低融
点、低粘性物質の流れ出しが防止されてモールド内への
流れ込みがなくなる。As can be seen from the above description, the antioxidative coating material for a refractory for casting of the present invention can be applied to a refractory for casting to prevent welding of refractory to each other.
Further, when the refractory for casting coated with this antioxidant coating material is used in a continuous casting machine, the low melting point and low viscous substance is prevented from flowing out of the antioxidant coating material, so that it does not flow into the mold.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩口 勉 愛知県刈谷市小垣江町南藤１番地 東芝セ ラミックス株式会社刈谷製作所内 (72)発明者 山田 和典 愛知県刈谷市小垣江町南藤１番地 東芝セ ラミックス株式会社刈谷製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tsutomu Iwaguchi Tsutomu Iwaguchi No. 1 Minamito, Ogakie-cho, Kariya city, Aichi Toshiba Ceramics Co., Ltd. Kariya Manufacturing Co., Ltd. Ceramics Co., Ltd. Kariya Works
Claims (2)
て、ガラス化点の異なる２層以上のコート材から構成さ
れ、かつ第１層と最外層のコート材のガラス化点には５
００℃以上の差があり、第１層よりも上層のコート材の
ガラス化点の方が高温であることを特徴とする鋳造用耐
火物の酸化防止コート材。1. An antioxidant coating material for a refractory for casting, which is composed of two or more coating materials having different vitrification points, and the coating material of the first layer and the outermost layer has a vitrification point of 5
An antioxidant coating material for a refractory for casting, which has a difference of 00 ° C. or more, and a vitrification point of the coating material of the upper layer is higher than that of the first layer.
コート材であって、最外層のコート材の成分がＡｌ2 Ｏ
3 ６０〜９８ｗｔ％、ＳｉＯ2 ２〜４０ｗｔ％であるこ
とを特徴とする鋳造用耐火物の酸化防止コート材。2. The oxidation-resistant coating material for a refractory for casting according to claim 1, wherein the outermost coating material is Al 2 O.
3 60~98wt%, antioxidant coating material cast refractories, which is a SiO 2 2~40wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15381195A JPH08325086A (en) | 1995-05-29 | 1995-05-29 | Oxidation preventing coating material for refractory for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15381195A JPH08325086A (en) | 1995-05-29 | 1995-05-29 | Oxidation preventing coating material for refractory for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08325086A true JPH08325086A (en) | 1996-12-10 |
Family
ID=15570631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15381195A Pending JPH08325086A (en) | 1995-05-29 | 1995-05-29 | Oxidation preventing coating material for refractory for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08325086A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017042797A (en) * | 2015-08-27 | 2017-03-02 | 黒崎播磨株式会社 | Continuous casting nozzle |
| JP2017060983A (en) * | 2015-09-25 | 2017-03-30 | 黒崎播磨株式会社 | Continuously casting nozzle |
| JP2021179264A (en) * | 2020-05-12 | 2021-11-18 | 東京窯業株式会社 | Heat storage body and method for manufacturing heat storage body |
| WO2022163293A1 (en) * | 2021-01-29 | 2022-08-04 | 明智セラミックス株式会社 | Fusion prevention structure for refractory material |
-
1995
- 1995-05-29 JP JP15381195A patent/JPH08325086A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017042797A (en) * | 2015-08-27 | 2017-03-02 | 黒崎播磨株式会社 | Continuous casting nozzle |
| JP2017060983A (en) * | 2015-09-25 | 2017-03-30 | 黒崎播磨株式会社 | Continuously casting nozzle |
| JP2021179264A (en) * | 2020-05-12 | 2021-11-18 | 東京窯業株式会社 | Heat storage body and method for manufacturing heat storage body |
| WO2022163293A1 (en) * | 2021-01-29 | 2022-08-04 | 明智セラミックス株式会社 | Fusion prevention structure for refractory material |
| JP2022116676A (en) * | 2021-01-29 | 2022-08-10 | 明智セラミックス株式会社 | Deposition-adhesion prevention structure of refractory |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH08325086A (en) | Oxidation preventing coating material for refractory for casting | |
| JP2003514748A (en) | Insulating fireproof material | |
| US5094692A (en) | Gas impermeable coating for a refractory article | |
| US5046647A (en) | Nozzle for discharging molten metal used in a casting device | |
| KR960015800B1 (en) | Tundish flux | |
| JPH05200508A (en) | Nozzle for continuous casting of molten steel | |
| JP3461990B2 (en) | Temperature sensor for molten metal | |
| JP2011056516A (en) | Continuous casting method for steel | |
| JPH05154627A (en) | Refractory composition for preventing stickness and deposition of non-metallic inclusions | |
| JPS6363301B2 (en) | ||
| JP2627473B2 (en) | Long stopper for continuous casting | |
| JP3597641B2 (en) | Refractories for metal refining and casting | |
| JPS5964153A (en) | Construction of cooling type slide valve plate for controlling flow rate of molten steel | |
| JPH0113950B2 (en) | ||
| JP2003320444A (en) | Casting method for aluminum killed steel | |
| JPH07108439B2 (en) | Nozzle for continuous casting | |
| JPH08281419A (en) | Nozzle and continuous casting method | |
| JPH10166116A (en) | Nozzle for continuous casting | |
| JPH1053479A (en) | Coating material for refractory material containing carbon | |
| JP3393803B2 (en) | Insulation agent for molten steel in container | |
| JPH06254663A (en) | Intermediate nozzle with insulating layer for continuous casting | |
| KR950008603B1 (en) | Composition of refractories | |
| JPH04158963A (en) | Nozzle for continuous casting | |
| JPS6365415B2 (en) | ||
| JPH04100661A (en) | Upper nozzle for continuous casting |