JP3540108B2 - Apparatus for preventing bending of casting in vertical continuous casting - Google Patents

Description

ここに示されるように、保持炉が前後左右に０〜１８ｍｍの範囲を自由に動くことにより、鋳造曲がりが防止でき、長時間連続鋳造ができた。
【０００９】
【発明の効果】
本発明の装置によれば、従来の場合と比較してセット時の芯出しの単純化、鋳型内部の凝固部分の損傷の軽減による１セット当りの連続鋳造量の増加を始め、凝固条件や引き出し状態あるいは切断時のチャッキングショックによる鋳塊の曲がりの防止に優れた効果をもたらし、次工程の押出し材としての適正な外形が確保されるので工業的価値が大きい。
【図面の簡単な説明】
【図１】本発明の竪型連続鋳造装置の一例の模式的断面図である。
【図２】スラストベアリングをセットした受け台の平面図である。
【符号の説明】
１ 保持炉
２ ルツボ
３ 鋳型
４ 冷却ジャケット
５ スラストベアリング
６ 炉台板
７ 受け台
８ 引出ロール
９ 切断鋸[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for preventing bending of a casting in vertical continuous casting, and particularly to a metal or alloy such as iron, copper, and aluminum.
[0002]
[Prior art]
A vertical continuous casting apparatus in which a holding furnace is placed on a cooling jacket surrounding a mold is widely used because a homogeneous ingot can be obtained, but a conventional holding furnace is in close contact with a mold and has a holding furnace. The mold-cooling jacket-drawer (including the cutting machine) is all fixed. Therefore, depending on the solidification conditions and drawing conditions, the cooling becomes uneven, the ingot bends due to the chucking shock of the ingot at the time of cutting, the mold breaks, and the long vertical continuous casting is stopped. There was a problem that had to be done.
[0003]
[Means for Solving the Problems]
As a result of various studies on this, the present inventor has found a practically preferable device for preventing casting bending, and has completed the present invention. That is, the present invention provides a vertical continuous casting apparatus in which a holding furnace is placed on a cooling jacket surrounding a mold, wherein thrust bearings are provided at four corners on a receiving stand that supports a furnace base plate on which the holding furnace is placed. A gist for preventing bending of casting in vertical continuous casting, characterized in that the holding furnace is movable on the same plane .
[0004]
BEST MODE FOR CARRYING OUT THE INVENTION
The apparatus of the present invention will be described below with reference to the drawings. In FIG. 1, a vertical continuous casting apparatus of the present invention includes a holding furnace 1-a mold 3-a cooling jacket 4-a combined body to which a drawer (drawer roll) 8 is fixed. Instead, the holding furnace 1 that houses the crucible 2 is placed on a cooling jacket 4 that surrounds the mold 3, and the holding furnace 1 is placed on a cooling jacket 4 that surrounds the mold 3. This is a configuration in which the holding furnace can be freely moved on the same plane with the base 7 , that is, thrust bearings are provided at four corners on a receiving base that supports the furnace base plate .
[0005]
As the above-mentioned means, thrust bearings arranged at the four corners of the furnace base plate 6 are most suitable, but not limited to this. If the holding furnace can be freely moved on the same plane, for example, a circular shape It may be a rail or the like.
[0006]
In the present invention , the thrust bearing causes the furnace base plate to move together with the holding furnace, the mold, and the cooling jacket even when a force for bending the ingot acts on the ingot due to a solidification condition, a drawing state, or a chucking shock during cutting. Since the core of the ingot drawn out by the drawing roll 8 is always vertical, the solidification phenomenon in the mold is made uniform without causing bending of the ingot, and the original long-time continuous casting becomes possible. .
[0007]
【Example】
(Example)
In the operation of continuously casting pure copper 155φ using a vertical continuous casting apparatus in which a thrust bearing is installed on a furnace base plate 6 shown in FIGS. 1 and 2 and cutting it into a length of about 530 mm using a cutting saw 9, a holding furnace is used. Was measured hourly at the four corners at the four corners of the furnace base plate 6, and the following results were obtained.
[0008]
[Table 1]

As shown here, the bending of the casting was prevented and the continuous casting was performed for a long time by freely moving the holding furnace back and forth and right and left in the range of 0 to 18 mm.
[0009]
【The invention's effect】
According to the apparatus of the present invention, the centering at the time of setting is simplified as compared with the conventional case, the amount of continuous casting per set is increased by reducing the damage to the solidified portion inside the mold , and the solidification conditions and drawing are increased. An excellent effect of preventing bending of the ingot due to a state or a chucking shock at the time of cutting is obtained, and an appropriate outer shape as an extruded material in the next process is secured, so that the industrial value is great.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of an example of a vertical continuous casting apparatus according to the present invention.
FIG. 2 is a plan view of a receiving stand on which a thrust bearing is set.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Holding furnace 2 Crucible 3 Mold 4 Cooling jacket 5 Thrust bearing 6 Furnace base plate 7 Receiving stand 8 Drawing roll 9 Cutting saw

Claims (1)

In a vertical continuous casting apparatus in which a holding furnace is placed on a cooling jacket surrounding a mold , thrust bearings are provided at four corners on a receiving table that supports a furnace base plate on which the holding furnace is placed , and the holding furnace is placed on the same plane. A device for preventing bending of casting in vertical continuous casting, characterized in that it is movable above .

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