JPS58154438A - Casting method of steel and vessel for molten metal - Google Patents
Casting method of steel and vessel for molten metalInfo
- Publication number
- JPS58154438A JPS58154438A JP3701082A JP3701082A JPS58154438A JP S58154438 A JPS58154438 A JP S58154438A JP 3701082 A JP3701082 A JP 3701082A JP 3701082 A JP3701082 A JP 3701082A JP S58154438 A JPS58154438 A JP S58154438A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- casting
- specific gravity
- high specific
- steel
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、高比重の合金成分を添加した鋼の鋳造方法の
改善を内容とし、その方法の実施に使用するに適した溶
湯容器をも包含する。 本発明は、とくに連続鋳造に適
用したときに、その意義が大きい。DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement in the method of casting steel with added alloying components of high specific gravity, and also includes a molten metal vessel suitable for use in carrying out the method. The present invention has great significance especially when applied to continuous casting.
たとえば鉛快削鋼の製造に当っては、溶解し精錬して他
の成分を調整した溶鋼に、とりべ中において、所定量の
１怖を添加して鋳造することがある。For example, in the production of lead free-cutting steel, a predetermined amount of lead is added to molten steel, which has been melted and refined to adjust other components, in a ladle, and then cast.
ところが、鋳造体中のＰｂ含有量は溶鏑ザンプル中のそ
れと、かなり異なることが、実操業ではしばしば経験さ
れる。 その原因は、Ｐ ｂは比重が高（（１１３４）
、１〜かも添加したものの一部は溶融状態でとりべの底
に沈み、ほとんど１月）からなるが、または少な《とも
囚〕を濃厚に含有する溶湯層を形成すると（・５事実に
あることがわかった。 とりべの底のノズルを開い駈溶
潟を注ぎ出すとき、１月）を泉厚に含有する溶湯部分も
所定の組成の浴湯に伴われて流出し、全体として規格に
合致しない合金組成がでとるわけである。However, it is often experienced in actual operations that the Pb content in the cast body is quite different from that in the hot metal sample. The reason is that Pb has a high specific gravity ((1134)
, some of the added material sinks to the bottom of the ladle in a molten state and forms a layer of molten metal containing a large amount of solids (5). It was found that when the nozzle at the bottom of the ladle is opened and the molten metal is poured out, the molten metal containing a certain amount of molten metal (January 2012) also flows out along with the bath water of the specified composition, so that the entire product meets the specifications. This results in alloy compositions that do not match.
この問題は、とくに銅を連続鋳造する場合に深刻であっ
て、ＰＩ）を濃厚に含有する溶湯部分が出つくすまでに
、相当の長さにわたって規格外の鋳片ができてしまい、
これは切り捨てるほかないから、歩留りが低くなる。This problem is particularly serious when copper is continuously cast; by the time the molten metal containing a high concentration of PI is reached, a substandard slab is formed for a considerable length.
Since this has no choice but to be discarded, the yield will be low.
この問題は、Ｐｂに限らず、［３Ｉ（比重９７８）など
の高比重元素を添加する場合に共通のことである。This problem is not limited to Pb, but is common when adding high specific gravity elements such as [3I (specific gravity 978).
本発明者らは、この対策として、溶湯容器の底に沈んだ
、溶湯中の高比重合金成分を濃厚に含有する部分を、あ
らかじめ除去するか、または除去しつつ、高比重の合金
成分を添加した鋼の鋳造を行なうことを提案するもので
ル）る。As a countermeasure to this problem, the present inventors have either removed in advance the part of the molten metal containing a high concentration of high specific gravity alloy components that has sunk to the bottom of the molten metal container, or added high specific gravity alloy components while removing it. This proposal proposes the casting of steel that is
ここで、「溶湯容器」とは、とりべはもちろん、連続鋳
造の場合に使用するタンディツシュを含めて、炉で溶製
されたｌｍｈｉｌをインゴットケースまたは、゛
水冷モールドに供給する間に使用する、すべての容器を
意味する。Here, the term "molten metal container" includes not only a ladle but also a tundish used in continuous casting, which is used while supplying lmhil melted in a furnace to an ingot case or a water-cooled mold. means all containers.
既存の設備を利用して上記の方法を実施する代表的な態
様を、連続鋳造の場合について説明すれば、まず第１図
に示すように、溶湯容器であるとりべ１の底部の溶湯８
の下にｐｂなとの高化重合４成分を濃厚に含有する層９
が沈んでいるので、補助クレーンを使用してとりべを吊
り下げている主巻きワイヤ７１ と補助巻きワイヤ７
２との引き一Ｌげ方を調節することにより、注ぎ出しノ
ズル１１゛ の開口部が低《なるように傾けて、そごへ
１−記の高比重合金成分を濃厚に含有する部分を集中さ
せ、ノズル１１ を開（・てこの部分を優先的にとり出
し、移動式の捨湯と（・５を通して捨湯容器６に受ける
。To explain a typical mode of carrying out the above method using existing equipment in the case of continuous casting, first, as shown in FIG.
Layer 9 containing a high concentration of the four high-polymerization components such as PB under the layer 9
The main winding wire 71 and the auxiliary winding wire 7 are hanging the ladle using an auxiliary crane.
By adjusting the height of the pull from the pouring nozzle 11, the opening of the pouring nozzle 11 is tilted to a low position, and the portion containing the high specific gravity alloy component listed in 1- is concentrated there. Open the nozzle 11 (・Take out the lever part preferentially and pass it through the movable waste water and (・5) to receive it in the waste water container 6.
ｐｂなどを濃厚に含有する溶湯部分が出つくしたならば
、第２図に示すように、直ちに捨湯とい５を撤去１〜て
とりべの傾きをなくし、所定の組成をもった溶鋼を、タ
ンティッシュ２、浸漬ノズル３をへてモールド４に供給
して、連続鋳造をはじめる。When a portion of molten metal containing a high concentration of PB etc. is found, as shown in Fig. 2, immediately remove the drain 5 and remove the slope of the ladle to remove the molten steel with a predetermined composition. The tongue tissue 2 is supplied to the mold 4 through the immersion nozzle 3, and continuous casting is started.
前述のとおり、本発明はト配した鋳造方法の実施に使用
するに適した溶湯容器をも包含する。As mentioned above, the present invention also encompasses a molten metal vessel suitable for use in carrying out the casting process.
その第一のタイプは、とりべに例をとった第３図に示す
ように、とりべ１の底部において、ノズル１１の開口部
１２周辺の部分を他の部分よりも低く形成したことを特
徴とする。 このようにすれば、溶湯中の高比重合金成
分を濃厚に含有する部分はおのずからノズルの開口部近
くに集まるから、ノズルを開けば優先的にとり出すこと
かでぎ、第１図に示すようなとりべの傾動をする必要が
ない。The first type is characterized in that the area around the opening 12 of the nozzle 11 is formed lower than other areas at the bottom of the ladle 1, as shown in FIG. 3, which takes the example of a ladle. shall be. In this way, the part of the molten metal that contains high specific gravity alloy components will naturally gather near the opening of the nozzle, so when the nozzle is opened, it can be taken out preferentially. There is no need to tilt the head.
第二のタイプは、やはりとりべに例をとった第４図にみ
るとおり、とりべ１の底部に、２個のノズルＩＩＡおよ
びＩＩＢ を、それぞれの開口部１２Ａおよび１２１１
３の高さを異にして設けたととを特徴とする。 容易に
理解されるとおり、溶湯中の高比重合金成分を濃厚に含
有する部分は、とりべ底部のより低い空間１３ニたまる
から、ノズル１１Ａを開けば、その部分だけをとり出す
ことができる。 他方のノズル１１．８ を開けば、所
定の組成をもった溶鋼を注ぎ出すことができるから、好
まし《ない溶湯部分の除去と鋳造とを、同時に進行させ
ることができる。In the second type, as shown in FIG. 4, which also takes a ladle as an example, two nozzles IIA and IIB are installed at the bottom of the ladle 1, with respective openings 12A and 1211.
3 are provided at different heights. As is easily understood, the portion of the molten metal that contains a high density alloy component is collected in the lower space 13 at the bottom of the ladle, so that only that portion can be taken out by opening the nozzle 11A. By opening the other nozzle 11.8, molten steel having a predetermined composition can be poured out, so that removal of undesirable molten metal portions and casting can proceed at the same time.
第１図および第２図は、本発明の方法を連続鋳造に適用
した場合の一態様を説明する断面図であって、第１図は
鋳造に先立って溶湯中の高比重合金成分を濃厚に含有す
る部分を除去している段階を、また第２図はそれに続く
連続鋳造の段階を、それぞ才１示ず。
第３図ＡおよびＢは、本発明の溶湯容器の第一のタイプ
の例を示すものであって、Ａは断面図、Ｂは平面図であ
る１、
第４図Ａおよび１３は、本発明の溶湯容器の第二のタイ
プの例を示すものであって、Ａは断面図、Ｂは平面図で
ある。
１ ・ と リ べ
１１、ＩＩＡ、 ＩＩＢ・ ノズル
１２、１２Ａ 、 １２Ｂ・ ノズル開口部２−
タンティッシュ
３− 浸漬ノズル
４・ モールド
５−・捨湯とい
６・・捨湯容器
８・ 溶 鋼
９・ ・ 高比重合金成分を濃厚に
含有する溶湯
特許出願人 大同特殊鋼株式会社
代理人 弁理士 須 賀 総 夫１′”１
、、−
才１図
１１Ａ １１Ｂ
才３図Ｂ
３
才４図Ｂ1 and 2 are cross-sectional views illustrating one embodiment of the method of the present invention applied to continuous casting. Figure 2 does not show the step of removing the containing portion, nor does it show the subsequent continuous casting step. 3A and 3B show an example of the first type of molten metal container of the present invention, in which A is a sectional view and B is a plan view. 2 shows an example of the second type of molten metal container, in which A is a cross-sectional view and B is a plan view. 1. Ribe 11, IIA, IIB. Nozzle 12, 12A, 12B. Nozzle opening 2-
Tongue tissue 3- Immersion nozzle 4, mold 5, waste water channel 6, waste water container 8, molten steel 9, molten metal richly containing high specific gravity alloy components Patent applicant Daido Steel Co., Ltd. Agent Patent attorney Souo Suga 1'"1 ,, - Age 1 Figure 11A 11B Age 3 Figure B 3 Age 4 Figure B
Claims (1)
て、溶湯容器の底に沈んだ、溶湯中の高比重合金成分を
濃厚に含有する部分を、あらかじめ除去したのち、また
は除去しつつ鋳造を行なうことを特徴とする鉛の鋳造方
法。 （２）高比重の合金成分が低溶融粘度であるｐｂまたは
Ｂ１ である特許請求の範囲第１項の鋳造方法。 （３）溶湯容器を、その注ぎ出しノズルの開口部が低く
なるように傾げて、そこへ溶湯中の高比重合金成分を濃
厚に含有する部分を集中させ、ノズルを開いてこの部分
を優先的にとり出したのち鋳造をはじめる特許請求の範
囲第１項の鋳造方法。 （・１）高比重の合金成分を添加した鋼を鋳造する際に
使用する溶湯容器であって、その底部において、ノズル
の開口部周辺の部分を他の部分よりも低くしたことを特
徴とする容器。 （５）高比重の合金成分を添加した鋼を鋳造する際に使
用する溶湯容器であって、その底部に、それぞれの開口
部の高さが異なる２個のノズルを設けたことを特徴とす
る特許[Claims] (1) When casting steel to which high specific gravity alloy components have been added, the portion of the molten metal that has sunk to the bottom of the molten metal container and is rich in high specific gravity alloy components is removed in advance. A method for casting lead, which is characterized by casting after or while removing lead. (2) The casting method according to claim 1, wherein the high specific gravity alloy component is PB or B1, which has a low melt viscosity. (3) Tilt the molten metal container so that the opening of the pouring nozzle is lower, concentrate there the part of the molten metal that contains high specific gravity alloy components, and open the nozzle to prioritize this part. The casting method according to claim 1, wherein casting is started after the casting is taken out. (・1) A molten metal container used when casting steel to which alloy components of high specific gravity are added, characterized in that the part around the nozzle opening is lower than the other parts at the bottom of the container. container. (5) A molten metal container used when casting steel to which alloy components of high specific gravity are added, characterized by having two nozzles at the bottom with different opening heights. patent
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3701082A JPS58154438A (en) | 1982-03-09 | 1982-03-09 | Casting method of steel and vessel for molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3701082A JPS58154438A (en) | 1982-03-09 | 1982-03-09 | Casting method of steel and vessel for molten metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58154438A true JPS58154438A (en) | 1983-09-13 |
Family
ID=12485705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3701082A Pending JPS58154438A (en) | 1982-03-09 | 1982-03-09 | Casting method of steel and vessel for molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58154438A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754800A (en) * | 1985-12-13 | 1988-07-05 | Inland Steel Company | Preventing undissolved alloying ingredient from entering continuous casting mold |
| JP2008036308A (en) * | 2006-08-10 | 2008-02-21 | Hatsuta Seisakusho Co Ltd | Injection port of automatic fire extinguishing device |
-
1982
- 1982-03-09 JP JP3701082A patent/JPS58154438A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754800A (en) * | 1985-12-13 | 1988-07-05 | Inland Steel Company | Preventing undissolved alloying ingredient from entering continuous casting mold |
| JP2008036308A (en) * | 2006-08-10 | 2008-02-21 | Hatsuta Seisakusho Co Ltd | Injection port of automatic fire extinguishing device |
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