JPH06122048A - Ceramic mold for continuous casting - Google Patents
Ceramic mold for continuous castingInfo
- Publication number
- JPH06122048A JPH06122048A JP4301637A JP30163792A JPH06122048A JP H06122048 A JPH06122048 A JP H06122048A JP 4301637 A JP4301637 A JP 4301637A JP 30163792 A JP30163792 A JP 30163792A JP H06122048 A JPH06122048 A JP H06122048A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- carbon
- low
- molding
- continuous casting
- 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- Withdrawn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
- Continuous Casting (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、連続鋳造設備に於ける
湯面下で凝固させるモールドの内張耐火物、加熱モール
ド及び水平鋳造用ブレークリング等に用いて好適な連続
鋳造用セラミック鋳型に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic mold for continuous casting which is suitable for use as a refractory lining for a mold which is solidified below the molten metal in a continuous casting facility, a heating mold, a break ring for horizontal casting, and the like. It is a thing.
【０００２】[0002]
【従来の技術】従来、連続鋳造技術においてセラミック
を鋳型に利用したものとして、特願平２−２３０８２４
号の出願明細書に記載の発明がある。当該明細書に記載
の発明は、炭素、窒化硼素、アルミナ等を一定の範囲の
粒度で構成させた耐火物及びその製造方法である。そし
てこの耐火物を利用して、鋳片冷却用の金属モールドの
上部にグラファイトモールドを接合した形状の構成の発
明が記載されている。この発明は、比較的安価なアルミ
ナカーボン質を基本材料とし、面精度、耐磨耗性、潤滑
性及び強度の向上が図られている。2. Description of the Related Art Conventionally, Japanese Patent Application No. 2-230824 discloses that a ceramic is used as a mold in a continuous casting technique.
There is an invention described in the specification of the application. The invention described in the specification is a refractory material in which carbon, boron nitride, alumina, and the like are formed in a certain range of particle size, and a manufacturing method thereof. Then, an invention of a configuration in which a graphite mold is joined to an upper portion of a metal mold for cooling a slab by utilizing this refractory is described. In the present invention, a relatively inexpensive alumina carbon material is used as a basic material, and the surface accuracy, abrasion resistance, lubricity and strength are improved.
【０００３】また連続鋳造設備に於ける鋳型において、
鋳型内に存在する金属の相状態が異なるため、その鋳型
に要求される特性は、鋳造方向の各部で異なる。即ち、
溶鋼の流入側である鋳型上部では溶鋼、或いはパウダー
状の湯面保温材が存在する為、これらに対する耐食性が
必要である。Further, in the mold in the continuous casting equipment,
Since the phase states of the metals present in the mold are different, the characteristics required for the mold are different in each part in the casting direction. That is,
At the upper part of the mold, which is the inflow side of molten steel, there is molten steel or powdery surface heat insulating material, so corrosion resistance against these is necessary.
【０００４】また鋳型の下部では、凝固シェルによる摺
動摩擦があるため耐摩耗性が必要であり、また凝固シェ
ルの発達を促進させるため高熱伝導率であることが望ま
しい。従って、鋳型に要求される特性は、鋳型上部は保
温性、耐食性、鋳型下部は耐摩耗性及び抜熱性という異
なる特性が要求される。これらの特性を満足する為に
は、一種類の材料で満足しない場合が多く、特願平２−
２３０８２４号の出願明細書に記載の発明の如く、一般
に異材料の張合わせによる場合が多い。In the lower part of the mold, abrasion resistance is required due to sliding friction due to the solidified shell, and high thermal conductivity is desirable for promoting the development of the solidified shell. Therefore, the mold is required to have different properties such as heat retention and corrosion resistance in the upper part of the mold and abrasion resistance and heat removal property in the lower part of the mold. In order to satisfy these characteristics, it is often the case that one type of material is not satisfied.
As in the invention described in the application specification of No. 230824, in many cases, different materials are bonded together.
【０００５】従来の異材料の張合わせによる場合では、
接合部の段差、或いは接合部の隙間（目地厚さ）調整が
困難であり、これらが起因で鋳造トラブルが発生し易
く、接合部での形状、構造不整トラブルをなくするた
め、一体構造であることが望まれていた。In the case of pasting different materials together,
It is difficult to adjust the step of the joint or the gap (joint thickness) of the joint, and casting troubles easily occur due to these, and it is an integral structure to eliminate shape and structural irregularity troubles at the joint. Was desired.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、鋳型に要求
される特性は、鋳型上部は保温性、耐食性、鋳型下部は
耐摩耗性及び抜熱性という異なる特性を満足し、かつ、
連続鋳造鋳型で低炭素鋼鋳造を行う場合に、製品品質
上、支障となっていた、鋳型の材料のセラミック材料中
の炭素が鋳片内に浸出する、いわゆるカーボンピックア
ップ（加炭溶解、浸炭）をおこさない連続鋳造用セラミ
ック鋳型を提供することにある。DISCLOSURE OF THE INVENTION The present invention has the following characteristics that a mold must satisfy different characteristics such as heat retention and corrosion resistance in the upper part of the mold and abrasion resistance and heat removal property in the lower part of the mold, and
When performing low carbon steel casting with a continuous casting mold, carbon in the ceramic material of the mold material leached into the slab, which was an obstacle to product quality, so-called carbon pickup (carburizing melting, carburizing) The object is to provide a ceramic mold for continuous casting that does not occur.
【０００７】[0007]
【課題を解決するための手段】本発明は、微粒子構成の
材料を用いた連続鋳造設備用セラミック鋳型に於いて、
少なくとも鋳型内面を低カーボンのアルミナグラファイ
ト質の材料を組成としたことを特徴とする連続鋳造用セ
ラミック鋳型であり、また鋳型内面に形成する低カーボ
ンのアルミナグラファイト質の材料の形成厚さを鋳型下
部に位置する程薄く形成することを特徴とする連続鋳造
用セラミック鋳型である。The present invention provides a ceramic mold for a continuous casting facility, which uses a material having a fine particle structure.
It is a ceramic mold for continuous casting characterized in that at least the inner surface of the mold is composed of a low carbon alumina graphite material, and the thickness of the low carbon alumina graphite material formed on the inner surface of the mold is set at the bottom of the mold. It is a ceramic mold for continuous casting characterized in that it is formed thinner as it is located at the position.
【０００８】[0008]
【作用】本発明は、溶鋼を鋳造する鋳型内面が低カーボ
ンのアルミナグラファイト質の材料を組成としている
為、鋳型内面から鋳造される鋳片への炭素が鋳片内に浸
出する、いわゆるカーボンピックアップ（加炭溶解、浸
炭）を未然に防止することが出来る。According to the present invention, since the inner surface of the mold for casting molten steel is composed of a low carbon alumina graphite material, carbon is leached from the inner surface of the mold into the cast slab, so-called carbon pickup. (Carburizing dissolution, carburizing) can be prevented in advance.
【０００９】また請求項２記載の発明では、鋳型上部と
鋳型下部では低カーボンのアルミナグラファイト質の材
料の厚みが異なる。従って低カーボンのアルミナグラフ
ァイト質は保温性が良好の為、鋳型上部は下部に比べ保
温性が向上するように作用している。According to the second aspect of the invention, the thickness of the low carbon alumina graphite material is different between the upper part and the lower part of the mold. Therefore, since the low carbon alumina graphite has a good heat retention property, the upper part of the mold acts so as to have a higher heat retention property than the lower part.
【００１０】なお鋳型の内面に形成する低カーボンのア
ルミナグラファイト質の材料で形成されているため、鋳
型内面が平滑に形成され、鋳型内の段差等の不整による
トラブルを防止するように作用する。Since the inner surface of the mold is made of a low carbon alumina graphite material, the inner surface of the mold is formed smoothly and acts to prevent troubles due to irregularities such as steps in the mold.
【００１１】[0011]
【実施例】以下に、本発明の実施例に基づいて説明す
る。図１は本実施例に係る発明の断面円形の鋳型の斜視
図であり、図２は図１の鋳型を使用時の断面説明図であ
る。EXAMPLES Hereinafter, examples will be described based on the present invention. FIG. 1 is a perspective view of a mold having a circular cross section according to the present invention, and FIG. 2 is a sectional explanatory view when the mold of FIG. 1 is used.
【００１２】図１に於いて、鋳型内面のＡの部分には、
１０％以下の炭素の含有量の低カーボンのアルミナグラ
ファイト質の材料とし、鋳型１のＢ部分には、例えばＡ
ｌ2Ｏ3 が７０％、Ｃが２５％、Ｓｉ，Ｂ4 Ｃ、バイン
ダーを合わせて５％、Ｃ部分には、Ａｌ2 Ｏ3 が６４
％、Ｃが３０％、Ｓｉ，Ｂ4 Ｃ、バインダーを合わせて
６％、Ｄ部分には、Ａｌ2 Ｏ3 が４０％、Ｃが５０％、
Ｓｉ，Ｂ4 Ｃ、バインダーを合わせて１０％の材質にし
ている。In FIG. 1, a portion A on the inner surface of the mold is
A low carbon alumina graphite material having a carbon content of 10% or less is used.
l 2 O 3 is 70%, C is 25%, Si, B 4 C, the binder is 5% in total, Al 2 O 3 is 64 in the C portion.
%, C is 30%, Si, B 4 C, 6% including binder, Al 2 O 3 is 40%, C is 50% in the D portion,
Si, B 4 C and binder are combined to make 10% material.
【００１３】また鋳型１の大きさは、高さ６００mm、直
径１５０mm、厚さ３０mmで、Ａ部分の厚みは３〜５mm程
度としている。Ｂ部分とＣ部分の高さはそれぞれ鋳型１
の厚みの３〜５倍程度の高さで、通常鋳型１の高さの通
常１／６〜１／４程度としている。The size of the mold 1 is 600 mm in height, 150 mm in diameter, and 30 mm in thickness, and the thickness of the portion A is about 3 to 5 mm. The height of part B and part C is mold 1 respectively
The height is about 3 to 5 times the thickness of, and is usually about 1/6 to 1/4 of the height of the mold 1.
【００１４】鋳型内面のＡ部分の形成方法としては、例
えば成形用金型の内周面の外径より半径で３〜５mm程度
の大きい筒状の例えば鉄製の材質よりなる仕切筒をラバ
ー製成形用外型との間の所定位置に装入し、成形用金型
の内周面との間に１０％以下の炭素の含有量の低カーボ
ンのアルミナグラファイト質の材料を入れ、仕切筒の外
側には前記Ｂ，Ｃ，Ｄの各部位に所定の成分の材料を充
填し、その後仕切り筒を引き抜き成形、還元焼成するこ
とによって鋳型を成形する。As a method of forming the portion A on the inner surface of the mold, for example, a cylindrical partition tube made of, for example, an iron material and having a radius of 3 to 5 mm larger than the outer diameter of the inner peripheral surface of the molding die is molded by rubber. It is charged at a predetermined position between the outer mold and the outer peripheral surface of the partition cylinder by inserting a low carbon alumina graphite material having a carbon content of 10% or less between the inner peripheral surface of the molding die and the outer mold. In the above, each of the above B, C, and D parts is filled with a material having a predetermined component, and then the partition cylinder is drawn out and reduction-fired to form a mold.
【００１５】なお図２に示す如くＡ部分とＢ部分或いは
Ｂ部分とＣ部分の境界部分に一定の高さ、例えば２０〜
３０mm程度の幅で両組成物が混在した状態となってい
る。今上述の実施例の鋳型１のＢ部分に高周波ヒータ２
が巻回され、Ｃ部分より下方の部分を水冷用の銅モール
ド３と接して設け、この状態で鋳型１を８００度に予熱
した後に、溶鋼を流し込んで鋳造した。この鋳造された
鋳片にカーボンピックアップが生じなかった。また鋳型
１に熱衝撃による割れも発生せず、損耗も認められなか
った。As shown in FIG. 2, a constant height, for example, 20 to 20 is provided at the boundary between the portions A and B or the portions B and C.
Both compositions are in a mixed state with a width of about 30 mm. The high-frequency heater 2 is attached to the portion B of the mold 1 of the above-described embodiment.
Was wound, and the portion below the portion C was provided in contact with the copper mold 3 for water cooling, and in this state, the mold 1 was preheated to 800 degrees, and then molten steel was poured and cast. No carbon pickup occurred in this cast slab. Further, the mold 1 was not cracked by thermal shock, and no wear was observed.
【００１６】また、図３は第２の実施例を示すものであ
り、鋳型上部と同様に低カーボンのアルミナグラファイ
ト質の材料成分で鋳型内面を形成した実施例を示す斜視
図であり、図４は図３の鋳型を使用時の断面説明図であ
る。FIG. 3 shows a second embodiment, and is a perspective view showing an embodiment in which the inner surface of the mold is formed of a low carbon alumina graphite material component as in the upper part of the mold. FIG. 4 is a cross-sectional explanatory view when the mold of FIG. 3 is used.
【００１７】係る実施例の鋳型の製造は前記第１の実施
例と同様に製作するが、鋳型１の内面部分ＡとＢ部分を
同じ成分とし成形している。The mold of this embodiment is manufactured in the same manner as in the first embodiment, but the inner surface portions A and B of the mold 1 are molded with the same components.
【００１８】更に図５は第２の実施例を示すものであ
り、低カーボンのアルミナグラファイト質の材料の形成
厚さを、鋳型下部に位置する程薄く形成した鋳型の実施
例を示す斜視図であり、図６は図５の鋳型を使用時の断
面説明図である。Further, FIG. 5 shows a second embodiment, and is a perspective view showing an embodiment of the mold in which the thickness of the low carbon alumina graphite material is formed so as to become lower toward the lower part of the mold. FIG. 6 is a cross-sectional explanatory diagram when the mold of FIG. 5 is used.
【００１９】この実施例では、鋳型内面に形成する低カ
ーボンのアルミナグラファイト質の材料の形成厚さを鋳
型下部に位置する程薄く形成し、鋳型のＣ部分、Ｄ部分
の抜熱効率を良好にするように作用させている。なお実
施例の鋳型１のＣ部分より下方では、抜熱性能が良好と
なっており、またＡ部分の厚みが３〜５mm程度と薄い
為、抜熱性能を損なうことが少ない。In this embodiment, the low carbon alumina graphite material formed on the inner surface of the mold is formed so thin that it is located below the mold to improve the heat removal efficiency of the C and D parts of the mold. To act like. Below the C portion of the mold 1 of the example, the heat removal performance is good, and since the thickness of the A portion is as thin as about 3 to 5 mm, the heat removal performance is not impaired.
【００２０】[0020]
【発明の効果】本発明は、鋳型の内面部分を低カーボン
のアルミナグラファイト質の材料で形成している為、低
炭素鋼鋳造を行う場合には、鋳型材料であるセラミック
中の炭素が鋳片内に浸出する、カーボンピックアップが
生じることがなく、品質の優れた低炭素鋼の製品を提供
することが出来る。According to the present invention, since the inner surface portion of the mold is formed of a low carbon alumina graphite material, when the low carbon steel is cast, the carbon in the ceramic as the mold material is a slab. It is possible to provide a low-carbon steel product of excellent quality, which does not cause carbon pickup that leaches inside.
【００２１】また鋳型は一体構造に成形されている為、
鋳片に傷を付けることが少なく、また鋳型に使用する材
質もニューセラミックスよりも安価で入手し易いＡｌ2
Ｏ3−Ｃ材料を用いることが出来る等、優れた効果を有
する。Further, since the mold is formed as an integral structure,
Al 2 which is less likely to damage the slab, and the material used for the mold is cheaper and easier to obtain than New Ceramics
It has an excellent effect that an O 3 -C material can be used.
【図１】本発明の鋳型部分の斜視図である。FIG. 1 is a perspective view of a mold portion of the present invention.
【図２】図１の鋳型の使断面説明図である。FIG. 2 is an explanatory view of a working section of the mold of FIG.
【図３】本発明の第２の実施例を示す斜視図である。FIG. 3 is a perspective view showing a second embodiment of the present invention.
【図４】図３の鋳型の使用断面説明図である。FIG. 4 is an explanatory view of a use cross section of the mold of FIG.
【図５】本発明の第３の実施例を示す斜視図である。FIG. 5 is a perspective view showing a third embodiment of the present invention.
【図６】図５の鋳型の使用断面説明図である。FIG. 6 is an explanatory view of a use cross section of the mold of FIG.
１ 鋳型 ２ 高周波ヒータ ３ 銅モールド 1 mold 2 high frequency heater 3 copper mold
Claims (2)
セラミック鋳型に於いて、少なくとも鋳型内面を低カー
ボンのアルミナグラファイト質の材料を組成としたこと
を特徴とする連続鋳造用セラミック鋳型。1. A ceramic mold for continuous casting, comprising a fine-grained material, wherein at least the inner surface of the mold is made of a low carbon alumina graphite material.
ボンのアルミナグラファイト質の材料の形成厚さを鋳型
下部に位置する程薄く形成することを特徴とする連続鋳
造用セラミック鋳型。2. A ceramic mold for continuous casting, wherein the low carbon alumina graphite material formed on the inner surface of the mold according to claim 1 is formed so that the thickness of the material is lower toward the lower part of the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4301637A JPH06122048A (en) | 1992-10-15 | 1992-10-15 | Ceramic mold for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4301637A JPH06122048A (en) | 1992-10-15 | 1992-10-15 | Ceramic mold for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06122048A true JPH06122048A (en) | 1994-05-06 |
Family
ID=17899342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4301637A Withdrawn JPH06122048A (en) | 1992-10-15 | 1992-10-15 | Ceramic mold for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06122048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119218A1 (en) | 2008-03-28 | 2009-10-01 | 富士フイルム株式会社 | Polymerizable composition, color filter, method for producing color filter, and solid-state imaging device |
-
1992
- 1992-10-15 JP JP4301637A patent/JPH06122048A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119218A1 (en) | 2008-03-28 | 2009-10-01 | 富士フイルム株式会社 | Polymerizable composition, color filter, method for producing color filter, and solid-state imaging device |
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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: 20000104 |