JPH02229646A - Pouring gate refractory for bottom pouring ingot-making - Google Patents
Pouring gate refractory for bottom pouring ingot-makingInfo
- Publication number
- JPH02229646A JPH02229646A JP4653389A JP4653389A JPH02229646A JP H02229646 A JPH02229646 A JP H02229646A JP 4653389 A JP4653389 A JP 4653389A JP 4653389 A JP4653389 A JP 4653389A JP H02229646 A JPH02229646 A JP H02229646A
- Authority
- JP
- Japan
- Prior art keywords
- pouring
- molten metal
- ingot
- refractory
- steel ingot
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005242 forging Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 abstract description 13
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000011449 brick Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は鋼塊の底部から注湯する下注造塊に際して、鋼
塊肌の改善と鋼塊の清浄性を向上するのに好適な湯上り
口用耐火物に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a hot water bath suitable for improving the steel ingot skin and improving the cleanliness of the steel ingot when pouring metal from the bottom of the steel ingot. Concerning mouth refractories.
従来、下注造塊法に用いられる湯上り口用耐火物はシリ
ンダ状であり、注湯初期の吹上り現象を完全に防止する
ことは困難であった。このため、本来、下注造塊法の特
徴である穏やかな鋳込みを注湯初期からコントロールす
ることは極めて困難であり、下注造塊法で採用される被
覆剤の組成の改良や投入量、および、投入法等により鋼
塊肌と鋼塊の内質改善が図られてきた。なお、ζ，−の
種の改善法は電気製鋼第５４巻第２号，１１ｏ頁から第
１２０頁で論じられている。Conventionally, refractories for hot water openings used in the bottom pouring ingot method have a cylindrical shape, and it has been difficult to completely prevent the phenomenon of blowing up at the initial stage of pouring. For this reason, it is extremely difficult to control the gentle pouring that is a characteristic of the bottom pouring ingot process from the initial stage of pouring, and it is difficult to improve the composition of the coating material used in the bottom pour ingot process, or to improve the dosage. In addition, attempts have been made to improve the steel ingot skin and internal quality by using the charging method and the like. A method for improving the species of ζ, - is discussed in Denki Kosei Vol. 54, No. 2, pages 11o to 120.
上記従来技術は、注湯初期の吹上り防止の点について十
分対応がされておらず、二重定盤の湯底部の深さとテー
パ角度で調整がされてきたが満足のいく結果が得られて
いない。The above-mentioned conventional technology does not sufficiently address the problem of preventing hot water from blowing up at the initial stage of pouring, and although adjustments have been made by adjusting the depth and taper angle of the bottom of the double surface plate, satisfactory results have not been obtained. .
本発明の目的は，湯上り口の耐火物をポーラス化するこ
とにより吹上り現象を防止し、且つ、高アルミナ質にす
ることにより、本耐火物の特性であるアルミナ系介在物
の吸着能を活用し，清浄性の良好な鋼塊を製造すること
にある。The purpose of the present invention is to prevent the blow-up phenomenon by making the refractory at the hot water outlet porous, and to utilize the adsorption ability of alumina-based inclusions, which is a characteristic of this refractory, by making it high in alumina. The objective is to produce steel ingots with good cleanliness.
上記目的は、湯上り口の耐火物をポーラスで、且つ、高
アルミナ質の耐火物とすることにより達成される。The above object is achieved by making the refractory at the outlet of the hot water bath a porous and high alumina refractory.
すなわち，二重定盤内にセットされる湯上り口用耐火物
はボーラスであるため、注湯の初期にも溶湯は一気に鋳
型内に入らず、静かに注湯される，さらに、注湯の中盤
から終盤にかけても溶湯の流れは乱流とはならず、静か
で、下注法に併用される被覆剤の巻込み等も防ぐことが
できる。In other words, since the refractory for the hot water outlet set in the double surface plate is a bolus, the molten metal does not enter the mold all at once even at the beginning of pouring, but is poured quietly. Even towards the end of the process, the flow of the molten metal is not turbulent and quiet, and it is possible to prevent entrainment of the coating material used in conjunction with the bottom pouring method.
以下、本発明の一実施例を第１図により説明する。定盤
１の上に二重定盤３、および、鋳型５を配した下注造塊
用設備において、湯上り口をポーラスな耐火物４として
二重定盤内にセットする。An embodiment of the present invention will be described below with reference to FIG. In a base pouring ingot equipment in which a double surface plate 3 and a mold 5 are arranged on a surface plate 1, a hot water outlet is set as a porous refractory material 4 in the double surface plate.
溶湯６は湯道煉瓦２の中を通り、湯上り口耐火物４を通
って鋳型５内に注湯されるが，湯上り口が開放されてい
ないため、ポーラス部分より静かに鋳型４内に注湯され
る。The molten metal 6 passes through the runner bricks 2 and is poured into the mold 5 through the outlet refractory 4, but since the outlet is not open, the molten metal is poured into the mold 4 more quietly than in the porous part. be done.
本発明によれば，注湯の初期から終了まで鋳型内に静か
に注湯されるため、鋼塊肌を良好にすることができ、被
覆剤の巻き込みも防ぐことができる。According to the present invention, since the molten metal is poured into the mold quietly from the beginning to the end of pouring, it is possible to improve the surface of the steel ingot and prevent entrainment of the coating material.
さらに、材質を高アルミナ質にすることによりアルミナ
系介在物を吸着し、溶湯の清浄性を向上した良好な鍛造
用鋼塊が製造できる。Furthermore, by making the material high in alumina, it is possible to adsorb alumina-based inclusions and produce a good steel ingot for forging with improved cleanliness of the molten metal.
第１図は本発明の一実施例の部分断面図である。
１・・・定盤，２・・・湯道煉瓦、３・・・二重定盤、
４・・・湯上り口耐火物、５・・・鋳型、６・・・溶湯
。FIG. 1 is a partial cross-sectional view of one embodiment of the present invention. 1... Surface plate, 2... Runway brick, 3... Double surface plate,
4... Hot water outlet refractory, 5... Mold, 6... Molten metal.
Claims (1)
ナ質のポーラスな耐火物としたことを特徴とする下注造
塊用湯上り口耐火物。1. A refractory for a bottom pouring ingot for a steel ingot for forging, characterized in that the top is made of a high alumina porous refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4653389A JPH02229646A (en) | 1989-03-01 | 1989-03-01 | Pouring gate refractory for bottom pouring ingot-making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4653389A JPH02229646A (en) | 1989-03-01 | 1989-03-01 | Pouring gate refractory for bottom pouring ingot-making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02229646A true JPH02229646A (en) | 1990-09-12 |
Family
ID=12749930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4653389A Pending JPH02229646A (en) | 1989-03-01 | 1989-03-01 | Pouring gate refractory for bottom pouring ingot-making |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02229646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804535A (en) * | 2010-03-25 | 2010-08-18 | 河北五维航电科技有限公司 | Method for preparing parent metal of nuclear-electric welding material with ultrahigh purity |
-
1989
- 1989-03-01 JP JP4653389A patent/JPH02229646A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804535A (en) * | 2010-03-25 | 2010-08-18 | 河北五维航电科技有限公司 | Method for preparing parent metal of nuclear-electric welding material with ultrahigh purity |
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