JPH0299251A - Tundish for producing small lot - Google Patents
Tundish for producing small lotInfo
- Publication number
- JPH0299251A JPH0299251A JP24979088A JP24979088A JPH0299251A JP H0299251 A JPH0299251 A JP H0299251A JP 24979088 A JP24979088 A JP 24979088A JP 24979088 A JP24979088 A JP 24979088A JP H0299251 A JPH0299251 A JP H0299251A
- Authority
- JP
- Japan
- Prior art keywords
- tundish
- molten steel
- steel
- nozzle
- mold
- 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 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 230000005587 bubbling Effects 0.000 claims abstract description 6
- 238000009749 continuous casting Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 239000002436 steel type Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、連続鋳造設備における小ロツド生産用タンデ
インシュに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a tundish for small-lot production in continuous casting equipment.
一般に連続鋳造設備の長所は鋼の場合、分塊工場が省略
できることから、省力化が第１にあげられ、また作業環
境の大幅な改善にあり、更には線材製造の場合、溶接工
程の省略化があげられる。In general, the advantage of continuous casting equipment is that in the case of steel, the blooming plant can be omitted, leading to labor savings, and it also greatly improves the working environment.Furthermore, in the case of wire rod manufacturing, the welding process can be omitted. can be given.
一方その短所は、小量（小ロツド）多品種の生産には不
適当なことがあげられる。On the other hand, its disadvantage is that it is unsuitable for small-lot (small lot) production of a wide variety of products.
例えば、従来の連続鋳造設備において小量多品種の生産
は、次のようにして行われていた。すなわち、一般の連
続鋳造設備では、第２図に示すように、シードル１内の
ＡＭ種（普通鋼）の溶鋼２は全ｆｉＡ網種の鋳片５，５
として鋳造されている。For example, in conventional continuous casting equipment, production of a wide variety of products in small quantities was carried out as follows. That is, in general continuous casting equipment, as shown in FIG.
It is minted as.
これを詳しくいえば、レードル１に転炉または電気炉か
ら出鋼した一定量（し−ドル容量）の冷鋼２がイ共給さ
れ、このン容鋼２はスライディングノズル６を介して、
タンディツシュ３に注入される。To explain this in detail, a certain amount (capacity) of cold steel 2 tapped from a converter or electric furnace is supplied to the ladle 1, and this steel 2 is fed through a sliding nozzle 6.
Injected into Tanditshu 3.
このタンディツシュ３ではモールド４への供給量の調節
、各モールド４への溶鋼分配や、スラグおよび介在物の
分離などが行われ、このタンディツシュ中の溶鋼２はス
ライドゲートからなるタンディツシュノズル７を介して
各モールド４，４に分配され給湯される。In this tundish 3, adjustment of the amount of supply to the molds 4, distribution of molten steel to each mold 4, separation of slag and inclusions, etc. are performed, and the molten steel 2 in this tundish is passed through a tundish nozzle 7 consisting of a slide gate. The hot water is distributed to each mold 4, 4 and supplied with hot water.
そこで、かかる連続鋳造設備において、例えばし−ドル
容量を７０トンとし、受注した品目がＡ鋼種５０トン（
９！通鋼４０ｋｇクラス）、Ｂ鋼種２０トン（低合金鋼
４０ｋｇクラス）とすれば、これらのＡおよびＢ鋼種を
生産する場合には、２通りの方法が考えられる。すなわ
ち、第１の方法として、レードルＩの１チヤージ目では
鋼種Ａを生産し、次いで２チヤージ目では鋼種Ｂを生産
する方法をとる。そのため、１チヤージ目ではレードル
ー容量が７０トンであるから５０トンのＡ鋼種を生産す
れば、２０トンの余剰材が発生し、２チヤージ目では２
０トンのＢ鋼種を生産すれば、５０トンの余剰材が発生
するので、結局、この第１の方法によれば７０トンの余
剰材が発生することになる。Therefore, in such continuous casting equipment, if the dollar capacity is set to 70 tons, and the ordered item is 50 tons of grade A steel (
9! Assuming that steel grades A and B are produced in the following manner, two methods can be considered. That is, the first method is to produce steel type A in the first charge of ladle I, and then produce steel type B in the second charge. Therefore, in the first charge, the ladle roux capacity is 70 tons, so if 50 tons of A steel type is produced, 20 tons of surplus material will be generated, and in the second charge, 20 tons will be produced.
If 0 tons of steel type B is produced, 50 tons of surplus material will be generated, so in the end, according to this first method, 70 tons of surplus materials will be generated.
その結果、この７０トンの余剰材の置き場所の確保や管
理が必要となり生産者にとって大きな負担となる。As a result, it becomes necessary to secure and manage a storage area for this 70 tons of surplus wood, which places a heavy burden on producers.
また、第２の方法として、高級鋼種Ｂのみを７０トン生
産し、このうちの５０トンを、受注品目の普通鋼である
Ａｍ種に振り向ける方法が考えられる。かかる方法によ
れば、Ａ鋼種に対して過剰品質となって当然大きな無駄
を生しることになる。In addition, as a second method, it is possible to produce 70 tons of only high-grade steel type B, and allocate 50 tons of this to grade A, which is the ordinary steel of the ordered item. According to such a method, the quality is excessive for the A steel type, which naturally results in large waste.
そこで本発明は、連続鋳造設備において、小ロツド多品
種の生産を可能とするために創作されたもので、その要
旨とするところは、マルチストランド方式の連続鋳造設
備に設けたタンディツシュにおいて、該タンディツシュ
を分割用堰により複数の室に区分し、区分された室にそ
れぞれモールドに溶鋼を注入するためのタンディツシュ
ノズルを設けるとともに、前記複数の室の少なくとも一
つの室に添加剤投入ホッパーとガスバブリング装置とを
設けたことを特徴とする小ロツド生産用タンディツシュ
にある。Therefore, the present invention was created in order to enable the production of small lots and a wide variety of products in continuous casting equipment. is divided into a plurality of chambers by a dividing weir, each of the divided chambers is provided with a tundish nozzle for injecting molten steel into the mold, and at least one of the plurality of chambers is equipped with an additive charging hopper and a gas bubbling. A tundish for small rod production is characterized in that it is equipped with a device.
本発明の構成を作用とともに、添付図面の実施例により
詳細に説明する。The structure and operation of the present invention will be explained in detail with reference to embodiments of the accompanying drawings.
第１図は本発明の実施例の概念図であるが、第２図の同
一部分は同一符号で示している。FIG. 1 is a conceptual diagram of an embodiment of the present invention, and the same parts in FIG. 2 are designated by the same reference numerals.
この図において、レードル１には、例えば普通鋼である
溶Ｍ２Ａがチャージされており、その溶鋼２Ａはスライ
ディングノズル６を介し、タンディツシュ３に注入され
る。In this figure, a ladle 1 is charged with molten steel M2A, which is, for example, ordinary steel, and the molten steel 2A is injected into a tundish 3 through a sliding nozzle 6.
このタンディツシュ３は分割用堰８により２個の室３Ａ
、３Ｂに区分され、一方の室３Ａには上部に前記スライ
ディングノズル６を臨ませているとともに、下面にクン
デイツシュノズル７を装着している。他方の室３Ｂには
湯の流れを制御し、かつ溶鋼中の介在物の浮上分離を促
進させるための堰９を更に設け、この堰９で区劃された
一方の小室には溶鋼の温度低下を防ぐための加熱装置１
０および、温度や成分調整のための撹拌用のガスバブリ
ング装ｆｌｌを設けるとともに、鋼種Ｂの組成を作るた
めの添加剤挿入ホッパー１２を臨ませている。また他方
の小室には、この堰９を溢流した溶鋼２Ｂをモールド４
Ｂへ注入させるためのクンデイツシュノズル７を装着し
ている。そして、分割用堰８で区分された室３Ａ、３Ｂ
に跨がる真空溶鋼吸引装置１３を設けている。This tandish 3 is divided into two chambers 3A by a dividing weir 8.
. The other chamber 3B is further provided with a weir 9 for controlling the flow of hot water and promoting floating separation of inclusions in the molten steel, and one small chamber separated by this weir 9 is provided with a weir 9 for reducing the temperature of the molten steel. Heating device 1 to prevent
0 and a gas bubbling device for stirring to adjust the temperature and components, and an additive insertion hopper 12 for preparing the composition of steel type B. In addition, in the other small chamber, the molten steel 2B that overflowed this weir 9 is placed in the mold 4.
A Kundeitz nozzle 7 for injecting into B is attached. The chambers 3A and 3B are divided by the dividing weir 8.
A vacuum molten steel suction device 13 is provided that straddles the molten steel.
なお、第１図中、２Ａ、２Ｂはそれぞれ溶鋼鋼種Ａ、溶
８１１４１１ Ｂ ヲ示り、、５Ａ、５Ｂはそれぞれ鋳
片鋼種Ａ、鋳片鋼種Ｂを示す。In Fig. 1, 2A and 2B indicate molten steel type A and molten steel type 811411B, respectively, and 5A and 5B indicate slab steel type A and slab steel type B, respectively.
本実施例の構成は以上のようであるので、その作用を述
べる。レードル１には鋼種Ａの溶鋼２Ａが入っており、
この溶＊２Ａはスライディングノズル６を介して、タン
ディツシュ３に注入される。Since the configuration of this embodiment is as described above, its operation will be described below. Ladle 1 contains 2A of molten steel of steel type A.
This melt*2A is injected into the tundish 3 via the sliding nozzle 6.
タンデインシュ３に注入された？８Ｅ２Ａの一部はその
ままクンデイツシュノズル７を通ってモールド４Ａに注
入され、鋼種Ａの鋳片５Ａとして鋳造される。またタン
ディツシュ３内のｉ′８１ｍ２Ａの他は、真空溶鋼吸引
装置１３により吸引され、他の室３Ｂに給湯される。こ
の室３Ｂに給湯された鋼種Ａの溶鋼は添加剤の添加、不
活性ガスの撹拌により鋼種Ａとは異なる合金の鋼種の溶
鋼２Ｂとなり、溶鋼温度を適正な値にコントロールされ
て堰９を溢流してモールド４Ｂに注入され、鋼種Ｂの鋳
片５Ｂとして鋳造されている。Was it injected into Tandeinsh 3? A part of the 8E2A is directly injected into the mold 4A through the Kundeitzsch nozzle 7, and is cast as a slab 5A of steel type A. The water other than i'81m2A in the tundish 3 is sucked by the vacuum molten steel suction device 13 and supplied to the other chamber 3B. The molten steel of steel type A supplied to this chamber 3B becomes molten steel 2B of a steel type of a different alloy from steel type A by adding additives and stirring with inert gas, and the molten steel temperature is controlled to an appropriate value and overflows the weir 9. It is poured into a mold 4B and cast as a slab 5B of steel type B.
また、タンディツシュ３内の？容１１ｉｉ１２Ｂは定期
的にサンプリングされ、化学成分が適正値になっている
か否かがチエツクされる。Also, in Tanditshu 3? The volumes 11ii and 12B are periodically sampled to check whether the chemical components are at appropriate values.
なお、本実施例のタンディツシュ３は２分割した例で説
明したが、本発明はこれに限らず、３〜４分割してもよ
く、この場合には３〜４種類の鋼種を組み合わせて鋳造
することができる。Although the tundish 3 of this embodiment has been described as an example in which it is divided into two parts, the present invention is not limited to this, and may be divided into three or four parts. In this case, three to four types of steel are combined and cast. be able to.
また、本発明ではし一ドル１にタンディツシュ３で区分
された室３Ａ、３Ｂ・・・に対応する複数のスライディ
ングノズルを設ければ、真空溶鋼吸弓装置１３は省略し
てもよい。Further, in the present invention, if a plurality of sliding nozzles corresponding to the chambers 3A, 3B, .
次に、本発明による試験例を示せば表１のようになる。Next, Table 1 shows test examples according to the present invention.
この試験例ではレードル容量は１００トンであり、レー
ドル内の溶鋼成分は鋼種Ａとしている。In this test example, the ladle capacity is 100 tons, and the molten steel composition in the ladle is steel type A.
そして、この試験に使用した連続鋳造設備は３ストラン
ド方式で、したがって、３ストランドとも異なった鋼種
を鋳造した。The continuous casting equipment used in this test was a three-strand type, and therefore different steel types were cast in the three strands.
［発明の効果］
本発明によれば、連続鋳造設備における最大の短所であ
る、安価な小ロツド多品種が生産できない点を、可及的
に解消することができる。すなわち、通常のし一ドル容
量を変更せず、単に区分されたタンディツシュのみを使
用して、マルチストランドにより成分を異にする鋼種を
鋳造するので、生産費をかけずに小ロツド多品種を生産
することができる。[Effects of the Invention] According to the present invention, it is possible to eliminate as much as possible the biggest disadvantage of continuous casting equipment, which is the inability to produce a wide variety of inexpensive small rods. In other words, without changing the normal production capacity, only the divided tundishes are used to cast steel types with different compositions using multi-strands, making it possible to produce a wide variety of small lots without incurring production costs. can do.
しかも、タンデインシュのみを取換えれば既存の連続鋳
造設備にも適用することができる。Moreover, it can be applied to existing continuous casting equipment by replacing only the tundane.
第１図は本発明の実施例の概念図、第２図は従来の概念
図である。
３・・・タンディツシュ、４Ａ ４Ｂ・・・モールド
、７・・・タンディツシュノズル、８・・・分割用堰、
１１・・・ガスバブリング装置、１２・・・添加剤挿入
ホッパ第２図
代理人 弁理士 加 藤 正 信
（ほか１名）FIG. 1 is a conceptual diagram of an embodiment of the present invention, and FIG. 2 is a conceptual diagram of a conventional system. 3...Tandish, 4A 4B...Mold, 7...Tandish nozzle, 8...Dividing weir,
11... Gas bubbling device, 12... Additive insertion hopper Figure 2 Agent: Masanobu Kato, patent attorney (and one other person)
Claims (1)
ンディッシュにおいて、該タンディッシュを分割用堰に
より複数の室に区分し、区分された室にそれぞれモール
ドに溶鋼を注入するためのタンディッシュノズルを設け
るとともに、前記複数の室の少なくとも一つの室に添加
剤投入ホッパーとガスバブリング装置とを設けたことを
特徴とする小ロッド生産用タンディッシュ。(1) In a tundish installed in multi-strand continuous casting equipment, the tundish is divided into multiple chambers by a dividing weir, and a tundish nozzle for injecting molten steel into the mold is installed in each divided chamber. A tundish for producing small rods, further comprising an additive charging hopper and a gas bubbling device in at least one of the plurality of chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24979088A JPH0299251A (en) | 1988-10-05 | 1988-10-05 | Tundish for producing small lot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24979088A JPH0299251A (en) | 1988-10-05 | 1988-10-05 | Tundish for producing small lot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0299251A true JPH0299251A (en) | 1990-04-11 |
Family
ID=17198261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24979088A Pending JPH0299251A (en) | 1988-10-05 | 1988-10-05 | Tundish for producing small lot |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0299251A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900019304A1 (en) * | 2019-10-18 | 2021-04-18 | Danieli Off Mecc | CASTING APPARATUS AND RELEVANT METHOD |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569049A (en) * | 1979-07-02 | 1981-01-29 | Sumitomo Metal Ind Ltd | Continuous casting method and continuous casting equipment |
| JPS59169654A (en) * | 1983-03-15 | 1984-09-25 | Kawasaki Steel Corp | Method for adjusting chemical component of molten metal |
-
1988
- 1988-10-05 JP JP24979088A patent/JPH0299251A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569049A (en) * | 1979-07-02 | 1981-01-29 | Sumitomo Metal Ind Ltd | Continuous casting method and continuous casting equipment |
| JPS59169654A (en) * | 1983-03-15 | 1984-09-25 | Kawasaki Steel Corp | Method for adjusting chemical component of molten metal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900019304A1 (en) * | 2019-10-18 | 2021-04-18 | Danieli Off Mecc | CASTING APPARATUS AND RELEVANT METHOD |
| WO2021074937A1 (en) * | 2019-10-18 | 2021-04-22 | Danieli & C. Officine Meccaniche S.P.A. | Multiple casting apparatus and method |
| DE212020000746U1 (en) | 2019-10-18 | 2022-07-25 | Danieli & C. Officine Meccaniche, S.P.A. | multiple steel casting fixtures |
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