JPS5942585B2 - Continuous casting method and equipment for different steel types - Google Patents
Continuous casting method and equipment for different steel typesInfo
- Publication number
- JPS5942585B2 JPS5942585B2 JP719180A JP719180A JPS5942585B2 JP S5942585 B2 JPS5942585 B2 JP S5942585B2 JP 719180 A JP719180 A JP 719180A JP 719180 A JP719180 A JP 719180A JP S5942585 B2 JPS5942585 B2 JP S5942585B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- continuous casting
- molten metal
- pieces
- mold short
- 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.)
- Expired
Links
Landscapes
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
本発明は異鋼種の連続鋳造法とその方法に直接使用され
る鋳型装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous casting method for different steel types and a molding device directly used in the method.
従来、異鋼種を連続的に連続鋳造する、いわゆる連々鋳
においては、普通の連続鋳造の場合と同様のモールドを
用い、第１の溶湯の注入を停止した後、鋳片の引抜速度
を遅くし、次に第２の溶湯の注入をおこなってモールド
の断面積を変えることなく鋼種切替えをおこなうため、
鋳片の長い範囲にわたって鋼種が混合した部分ができて
引抜きを終った後の製品（スラブ）部分で廃材となるも
のが多く、極めて歩留りの悪いものである。Conventionally, in so-called continuous casting, in which different types of steel are continuously cast, the same mold as in ordinary continuous casting is used, and after the injection of the first molten metal is stopped, the drawing speed of the slab is slowed down. Then, in order to change the steel type without changing the cross-sectional area of the mold by injecting the second molten metal,
There is a mixture of steel types over a long range of the slab, and the product (slab) after drawing is often discarded, resulting in extremely low yields.
そこで本発明はかかる問題点を解消した連続鋳造法とそ
の装置を提供するものである。Therefore, the present invention provides a continuous casting method and an apparatus therefor that solves such problems.
以下、本発明の一実施例を図に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
１，２は互いに対向するモールド短片であって、この実
施例では上下方向に沿って３つに分割されている。1 and 2 are mold short pieces facing each other, and in this embodiment, they are divided into three pieces along the vertical direction.
各分割モールド短片１ａ、１ｂ。１ｃ、２ａ、２ｂ、２
ｃは銅板３と該銅板３を冷却するための冷却ボックス４
とから構成され、さらに中段モールド短片１ｂ、２ｂの
各冷却ボックス４の背面にはそれぞれガイドボックス５
が一体的に突設されている。Each split mold short piece 1a, 1b. 1c, 2a, 2b, 2
c is a copper plate 3 and a cooling box 4 for cooling the copper plate 3;
Furthermore, a guide box 5 is provided on the back side of each cooling box 4 of the middle mold short pieces 1b and 2b.
is integrally protruded.
６は先端が各冷却ボックス４に連結された巾調整スピン
ドル、７はモールド長片である。6 is a width adjusting spindle whose tip is connected to each cooling box 4, and 7 is a mold long piece.
上記両中段モールド短片ｉｂ、２ｂの各冷却ボックス４
の上面と各ガイドボックス５のそれとは面一に構成され
、ラップ面８とされている。Each cooling box 4 of the above-mentioned middle mold short pieces ib, 2b
The upper surface of the guide box 5 and that of each guide box 5 are flush with each other, forming a lap surface 8.
上記構成に基づいて異鋼種の連続鋳造法を説明する。A continuous casting method for different steel types will be explained based on the above configuration.
まず第１図実線に示すごとく雨中段モールド短片１ｂ、
２ｂ間の間隔αと上段および下段の両モールド短片１ａ
、２ａ、 ｌｃ、２ｃ間の間隔βとが同一の状態におい
て、このモールド内に第１の溶湯９を注入して連続鋳造
をおこない、次に鋼種切替えをおこなう場合には、上記
第１の溶湯９の注入を停止し、この第１の溶湯９の湯面
が下段モールド短片ＩＣ，２Ｃのところにくる直前に第
１の溶湯９からなる第１の鋳片１０の引抜速度を遅くす
るとともにスピンドル６を作動させて互いに対向する中
段モールド短片１ｂ、２ｂを第１図仮想線で示すごとく
接近させ、間隔αを狭くする。First, as shown in the solid line in Figure 1, the rain middle mold short piece 1b,
Interval α between 2b and both upper and lower mold short pieces 1a
, 2a, lc, and 2c are in the same state, the first molten metal 9 is injected into this mold to perform continuous casting, and then when the steel type is changed, the first molten metal 9 is injected into the mold. The injection of the first molten metal 9 is stopped, and just before the surface of the first molten metal 9 reaches the lower mold short pieces IC, 2C, the drawing speed of the first slab 10 made of the first molten metal 9 is slowed down, and the spindle 6 is activated to bring the opposed middle mold short pieces 1b and 2b closer together as shown by the imaginary lines in FIG. 1, thereby narrowing the interval α.
次に第２図に示すごとくモールド内に第２の溶湯１１を
注入する。Next, as shown in FIG. 2, a second molten metal 11 is poured into the mold.
このとき第１の鋳片１０の最終部に第２の溶湯１１が混
合されるが、上記したごとく間隔αを狭くしであるので
、その混合量を極めて少なくすることができる。At this time, the second molten metal 11 is mixed into the final part of the first slab 10, but since the interval α is narrowed as described above, the mixing amount can be extremely small.
また注入された第２の溶湯１１は急速に冷却され、その
外殻部分が第１の鋳片１０の外殻部分と一体的に連結さ
れる。Further, the injected second molten metal 11 is rapidly cooled, and its outer shell portion is integrally connected to the outer shell portion of the first slab 10.
次に雨中段モールド短片１ｂ、２ｂを互に離間させて間
隔αを元の状態に戻し、第１の鋳片１０を引き抜いてい
けば、第３図実線に示すごとく第２の溶湯１１からなる
第２の鋳片１２も第１の鋳片１０に引っ張られて連続鋳
造されていくものである。Next, by separating the rain middle mold short pieces 1b and 2b from each other to return the interval α to the original state, and pulling out the first slab 10, the second molten metal 11 will be formed as shown by the solid line in Figure 3. The second slab 12 is also pulled by the first slab 10 and continuously cast.
そしてこの場合、引き抜きを終った後、第１、第２の溶
湯９，１１が混合されている１３の部分だけを廃材にす
ればよい。In this case, after drawing is completed, only the portion 13 where the first and second molten metals 9 and 11 are mixed needs to be disposed of as waste.
以上述べたごとく本発明の異鋼種の連続鋳造法とその装
置によれば、鋼種の切替時において互いに対向する雨中
段モールド短片間の間隔を狭くするものであるから、第
１の溶湯に対する第２の溶湯の混合量を極めて少なくす
ることができる。As described above, according to the continuous casting method and apparatus for different steel types of the present invention, the interval between the rain middle mold short pieces facing each other is narrowed when changing the steel type. The amount of molten metal mixed can be extremely reduced.
したがって製品の廃材となる部分を従来に比べて極めて
少なくすることができ、歩留りを向上させることができ
るものである。Therefore, the portion of the product that becomes waste material can be significantly reduced compared to the conventional method, and the yield can be improved.
図は本発明の一実施例を示し、第１図は鋼種切替前の概
略縦断面図、第２図は鋼種切替中の概略縦断面図、第３
図は鋼種切替後の概略縦断面図である。
１．２・・・・・・モールド短片、ｌｂ、２ｂ・・・・
・・中段モールド短片、７・・・・・・モールド長片、
９・・・・・・第１の溶湯、１０・・・・・・第１の鋳
片、１１・・・・・・第２の溶湯、１２・・・・・・第
２の鋳片、α・・・・・・中段モールド短片間の間隔。The figures show one embodiment of the present invention, in which Fig. 1 is a schematic longitudinal sectional view before steel type switching, Fig. 2 is a schematic longitudinal sectional view during steel type switching, and Fig. 3 is a schematic longitudinal sectional view during steel type switching.
The figure is a schematic vertical cross-sectional view after switching the steel type. 1.2...Mold short piece, lb, 2b...
... Middle mold short piece, 7...Mold long piece,
9...First molten metal, 10...First slab, 11...Second molten metal, 12...Second slab, α... Distance between middle mold short pieces.
Claims (1)
３つ以上番こ分割されたモールド内に第１の溶湯を注入
して連続鋳造をおこない、次に該第１の溶湯の注入を停
止し、この第１の溶湯の湯面が下段モールド短片のとこ
ろにくる直前に鋳片の引抜速度を遅くするとともに互い
に対向する中段モールド短片を接近させて、この両中段
モールド短片間の間隔を狭くし、次にモールド内に第２
の溶湯を注入し、次に上記両中段モールド短片を互いに
離間させて元の状態に戻し、鋳片を引き抜いて連続鋳造
することを特徴とする異鋼種の連続鋳造法。 ２ 一対のモールド短片を少なくとも上下方向に沿って
３つ以上に分割し、各分割モールド短片のうち、互いに
対向する中段モールド短片を他のモールド短片とは別個
に接近離間自在に構成したことを特徴とす２鋳型装置。[Claims] 1. Continuous casting is performed by pouring a first molten metal into a mold in which a pair of mold short pieces is divided into at least three pieces along the vertical direction, and then continuous casting is performed. The injection is stopped, and just before the surface of the first molten metal reaches the lower mold strip, the drawing speed of the slab is slowed down, and the middle mold strips facing each other are moved closer to each other, and the gap between the two middle mold strips is Narrow the gap, then add the second one in the mold.
1. A continuous casting method for different steel types, characterized by injecting molten metal, then separating the middle mold short pieces from each other to return them to their original state, and pulling out the slab for continuous casting. 2 A pair of mold short pieces are divided into three or more pieces at least along the vertical direction, and among each divided mold short piece, the middle mold short pieces facing each other are configured to be able to approach and separate from each other separately from the other mold short pieces. Tosu2 molding equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP719180A JPS5942585B2 (en) | 1980-01-24 | 1980-01-24 | Continuous casting method and equipment for different steel types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP719180A JPS5942585B2 (en) | 1980-01-24 | 1980-01-24 | Continuous casting method and equipment for different steel types |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56105850A JPS56105850A (en) | 1981-08-22 |
| JPS5942585B2 true JPS5942585B2 (en) | 1984-10-16 |
Family
ID=11659140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP719180A Expired JPS5942585B2 (en) | 1980-01-24 | 1980-01-24 | Continuous casting method and equipment for different steel types |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942585B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH663165A5 (en) * | 1983-08-24 | 1987-11-30 | Lauener Eng Ag | CASTING MACHINE FOR CONTINUOUSLY casting METAL AND METHOD FOR THE OPERATION THEREOF. |
-
1980
- 1980-01-24 JP JP719180A patent/JPS5942585B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56105850A (en) | 1981-08-22 |
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