JPS62127165A - Cooling and removing method for residual molten metal in vessel - Google Patents
Cooling and removing method for residual molten metal in vesselInfo
- Publication number
- JPS62127165A JPS62127165A JP26703185A JP26703185A JPS62127165A JP S62127165 A JPS62127165 A JP S62127165A JP 26703185 A JP26703185 A JP 26703185A JP 26703185 A JP26703185 A JP 26703185A JP S62127165 A JPS62127165 A JP S62127165A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- slag
- air
- residual
- water
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は容器内残湯の冷却除去方法に係り、特に処理時
間を短縮して容器の稼動率を向上できる容器内の金属お
よび滓の冷却除去方法に関し、溶融金属を容器に収容し
て鋳造する分野で広く利用される。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for cooling and removing residual hot water in a container, and in particular, a method for cooling metal and slag in a container that can shorten processing time and improve the operating rate of the container. Regarding the removal method, it is widely used in the field of casting molten metal by placing it in a container.
連鋳機における鋳造終了後に溶鋼が残留しているタンデ
ィツシュの従来の空冷による冷却除去方法を第６図によ
り説明する。タンディツシュ２内には残鋼４、残滓６が
層状に残留している。まず、タンディツシュカバーを取
リニアーブロワ８にて約３時間冷却し、クレーンにてタ
ンディツシュ２を傾転機まで運搬し、約９０度傾転した
状態で解体機にて固化した残滓６を除去するが、これに
約半時間を要する。次に再びタンディツシュ２をクレー
ンにて元の位置に運搬し再びエアーブロワ８にて残鋼４
を約１５時間空冷する。再冷却後、クレーンにて傾転機
までタンディツシュ２を運搬し特開昭５１−２００２５
号公報に示されている如きタンディツシュ地金数機で傾
転されている鋳込孔１０に押出棒を押入し約半時間で残
鋼４を除去し、この１サイクルの処理は第５図に図示の
如く５５時間であった。この空冷法は処理時間が長時間
の上、運搬のため３回もクレーンを使用する点に問題が
あった。A conventional method for cooling and removing molten steel remaining in a tundish after completion of casting in a continuous casting machine by air cooling will be explained with reference to FIG. In the tandish 2, residual steel 4 and residue 6 remain in layers. First, the tundish cover is cooled for about 3 hours using a linear blower 8, and then the tundish 2 is transported to a tilting machine using a crane, and the solidified residue 6 is removed using a dismantling machine while the tundish cover is tilted about 90 degrees. , this takes about half an hour. Next, the tanditshu 2 is transported to the original position again using the crane, and the remaining steel 4 is again transported using the air blower 8.
Air cool for about 15 hours. After re-cooling, the tanditshu 2 is transported to the tilting machine using a crane.
An extrusion rod is pushed into the casting hole 10 which is tilted with a tundish ingot machine as shown in the publication, and the remaining steel 4 is removed in about half an hour.The process of this one cycle is shown in Fig. 5. As shown in the figure, the time was 55 hours. This air cooling method had problems in that it took a long time to process and required a crane to be used three times for transportation.
次に、従来の空水冷併用の冷却除去方法を第７図により
説明する。これは残鋼４、残滓６共にエアーブロワ８の
空冷および水冷ノズル１２から水噴バによる水冷の空水
冷を４時間行い、次にクレーンで傾転機までダンディツ
シュ２を運搬し、タレディツシュ地金数機で残鋼４、残
滓６を一挙に除去するのであるが、解体機による残滓処
理も同時に必要とする場合が多く、これを含めろと約１
時間を必要とし、第５図に示す如く１サイクルは約５時
間程度である。すなわち、クレーンの使用回数は１回に
減ったが、１サイクルの処理時間の大きな減少を図かる
ことはできず、従来タンディツシュの処理時間の短縮は
現場における大きな要望であった。Next, a conventional cooling removal method using air/water cooling will be explained with reference to FIG. Both the residual steel 4 and the residual steel 6 are air-cooled with an air blower 8 and water-cooled with a water jet from the water-cooling nozzle 12 for 4 hours.Then, the danditshu 2 is transported to a tilting machine by a crane, and the danditshu ingots are The machine removes the remaining steel 4 and the residue 6 all at once, but in many cases it is also necessary to process the residue using a demolition machine at the same time, and it takes about 10 minutes to include this.
It takes time, and one cycle takes about 5 hours as shown in FIG. In other words, although the number of times the crane is used has been reduced to one, it has not been possible to significantly reduce the processing time for one cycle, and conventionally, shortening the processing time of tandishes has been a big demand at the site.
本発明の目的は、上記従来技術に対する要望に応文、処
理時間を短縮できる溶融金属の冷却除去方法を提供する
にある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for cooling and removing molten metal that can shorten the processing time in response to the above-mentioned needs of the prior art.
〔問題点を解決するための手段および作用〕本発明の要
旨とするところは次の如くである。[Means and operations for solving the problems] The gist of the present invention is as follows.
すなわち、容器内に滓を伴って残留している溶融金属を
冷却固化して除去する残湯の冷却除去方法において、固
化した前記滓を前記金属の上表面の露出度が２〜２０％
の範囲になる如く機械的に破砕しつつ該金属を空水冷併
用にて冷却することを特徴とする容器内残湯の冷却除去
方法である。That is, in a method for cooling and removing residual metal in which the molten metal remaining in a container with slag is cooled and solidified, the solidified slag is removed by removing the solidified slag so that the upper surface of the metal is exposed by 2 to 20%.
This is a method for cooling and removing remaining hot metal in a container, which is characterized by cooling the metal by using air/water cooling while mechanically crushing the metal to a temperature within the range of .
タンディツシュ内の残鋼の表面の残滓は断熱層の作用を
有している。すなわち、残滓の厚さが残鋼の冷却に与え
る影響を第２図に示したが、残滓厚１００＋ｏｎ＋を５
０ＩＩＩＩＩにすれば、冷却時間は６０％に減少するが
残滓厚を減らす適切な手段が従来見つからなかった。The residue on the surface of the remaining steel in the tundish acts as a heat insulating layer. In other words, Fig. 2 shows the influence of the thickness of the residual steel on the cooling of the residual steel.
0III, the cooling time is reduced by 60%, but no suitable means for reducing the thickness of the residue has been found so far.
また、タンディツシュ内の残鋼の冷却水による冷却影響
を第３図に示したが、空冷単独に対して空冷と水冷を併
用すれば冷却は早くなるが、残滓の上からの冷却は水量
が一定量に達すると効果が飽和し、それ以上の増加は望
めない。Figure 3 shows the cooling effect of cooling water on the remaining steel in the tandish. Cooling is faster if air cooling and water cooling are used together compared to air cooling alone, but cooling from above the remaining steel requires a constant amount of water. Once this amount is reached, the effect is saturated and no further increase can be expected.
本発明者らは冷却の促進について種々の検討を重ね、タ
ンディツシュ内の残鋼の表面の残滓を除去して残鋼上表
面の露出度を変えて水冷および空冷による冷却時間を調
査し、第４図に結果を示す如く残鋼の表面を露出して冷
却することにより冷却時間を著しく短縮できることを見
出した。本発明はこの知見に基づいてなされｊこもので
ある。The present inventors have conducted various studies on the promotion of cooling, removed the residue on the surface of the remaining steel in the tundish, changed the degree of exposure of the upper surface of the remaining steel, and investigated the cooling time by water cooling and air cooling. As shown in the figure, it was found that the cooling time could be significantly shortened by exposing the surface of the remaining steel and cooling it. The present invention has been made based on this knowledge.
本発明の詳細を図示の実施例により説明する。The details of the invention will be explained with reference to the illustrated embodiments.
まず、第１図（Ａ）、（Ｂ）により本発明法で使用する
装置について説明する。タンディツシュ置台１４のタン
ディツシュ２の上部に走行車輪１５で走行できる水冷台
車１６が設けられている。水冷台車１６には水冷ノズル
１２、集塵用カバー１８が設けられ、更にタンディツシ
ュ２内の固化した残滓を破砕する回転式環破砕機２０が
設けられ、これは横行車輪２２によって横行が可能であ
る。First, the apparatus used in the method of the present invention will be explained with reference to FIGS. 1(A) and 1(B). A water-cooled cart 16 that can run on traveling wheels 15 is provided above the candish 2 on the candish table 14. The water-cooled truck 16 is provided with a water-cooled nozzle 12 and a dust collection cover 18, and is further provided with a rotary ring crusher 20 for crushing solidified residue in the tundish 2, which can be moved laterally by traverse wheels 22. .
次に上記の装置を使用した本発明法による冷却除去方法
を説明する。鋳込完了後の残鋼４を有するタンディツシ
ュ２をタンディツシュ置台１４上に載置する。Next, a cooling removal method according to the present invention using the above-mentioned apparatus will be explained. The tundish 2 having the remaining steel 4 after completion of casting is placed on the tundish placing table 14.
タンディツシュカバーを除去後、水冷台車１６を走行し
てタンディツシュ２上に運搬し、集塵用カバー１８を降
ろし、水冷ノズル１２より水をミスト状にスプレーする
と同時にニアブロワ８がら空気を吹付けて冷却する。残
滓６が固化もしくは固化されつつある状態で回転式環破
砕機２０で残滓６を破砕し残鋼４の表面を露出させる。After removing the tundish cover, the water-cooled trolley 16 is run to transport it onto the tundish 2, the dust collection cover 18 is lowered, water is sprayed in a mist form from the water-cooled nozzle 12, and at the same time air is blown from the near blower 8 to cool it down. do. While the residue 6 is solidified or in the process of being solidified, the residue 6 is crushed by a rotary ring crusher 20 to expose the surface of the residual steel 4.
回転式破砕機２０は横行台車２２によりランダムに横行
し、残鋼４の表面の露出度を２〜２０％の範囲に維持す
る如く破砕を行い、一方平行して水冷および空冷を行う
。残鋼露出度は、２％未満では第４図に示す如く冷却効
果が悪く、２０％を越しても冷却効果が飽和し破砕エネ
ルギーが不経済であるので２〜２０％の範囲に限定した
。The rotary crusher 20 is moved randomly by a traversing cart 22, and crushes the residual steel 4 so as to maintain the degree of surface exposure in the range of 2 to 20%, while water cooling and air cooling are performed in parallel. The degree of exposure of residual steel was limited to a range of 2 to 20% because if it was less than 2%, the cooling effect would be poor as shown in FIG. 4, and if it exceeded 20%, the cooling effect would be saturated and the crushing energy would be uneconomical.
上記の如く２〜２０％の残鋼露出度を維持しながら水冷
および空冷を２時間実施し、その後クレーンにてタンデ
ィツシュ２を傾転機まで運搬し、約９０度傾転し解体機
にて固化した残滓６を除去したが、これに半時間を要し
た。次に再びタンディツシュ２をクレーンにて元の位置
に運搬し再び残鋼を半時間水冷および空冷を行い、再冷
却後従来の如くタンディツシュ地金数機によって約半時
間で残鋼４を除去した。Water cooling and air cooling were carried out for 2 hours while maintaining the residual steel exposure of 2 to 20% as described above, and then Tandish 2 was transported to a tilting machine using a crane, tilted approximately 90 degrees, and solidified in a dismantling machine. Residue 6 was removed, but this took half an hour. Next, the tundish 2 was again transported to its original position by a crane, and the remaining steel was again water-cooled and air-cooled for half an hour, and after recooling, the remaining steel 4 was removed in about half an hour using several tundish ingot machines as in the past.
本発明における上記の冷却除去の処理サイクル時間は第
５図に示す如く合計で３５時間であり、従来の空冷単独
法の５５時間あるいは空水冷併用法の５時間に比較して
著しく短縮された。The processing cycle time for the above-mentioned cooling removal in the present invention is 35 hours in total as shown in FIG. 5, which is significantly shorter than the conventional air cooling method of 55 hours or the air/water cooling method of 5 hours.
冷却時間を比較してみると、本発明法においては２５時
間であるが、従来法においては４５時間および４時間で
あり、本発明法は冷却効率のすぐれていることがわかる
。Comparing the cooling times, the method of the present invention takes 25 hours, while the conventional methods take 45 hours and 4 hours, indicating that the method of the present invention has superior cooling efficiency.
本発明法を主として連鋳におけるタンディツシュの残鋼
の例によって説明してきたが、本発明はこれに限定され
ることなく、容器内の溶融金属の冷却除去に広（適用す
ることができる。Although the method of the present invention has been mainly explained using the example of residual steel of a tundish in continuous casting, the present invention is not limited thereto, but can be broadly applied to the cooling removal of molten metal in a container.
本発明は、容器内の溶融金属および滓の冷却除去におい
て、固化した滓を金属上表面の露出度が２〜２０％の範
囲になる如く機械的に破砕し金属表面を露出して水冷お
よび空冷を併用で金属を冷却することによって、冷却除
去時間を著しく短縮する効果をあげることができた。In the cooling and removal of molten metal and slag in a container, the present invention mechanically crushes the solidified slag so that the exposed metal surface is in the range of 2 to 20%, exposes the metal surface, and then cools the slag with water and air. By cooling the metal in combination, we were able to achieve the effect of significantly shortening the cooling removal time.
第１図（Ａ）、（Ｂ）は本発明で使用するタンディツシ
ュの冷却装置を示しくＡ）は正面図、（Ｂ）は側部図、
第２図は残鋼上の残滓厚と冷却時間比の関係を示す線図
、第３図は空冷単独と水冷空冷併用の冷却時間比を示す
線図、第４図は残Ｗ４露出度−と冷却時間比の関係を示
す線図、第５図は本発明法および従来法の冷却除去処理
サイクル時間を示す線図、第６図は従来のタンディツシ
ュ単独空冷装置の正面図、第７図は従来のタンディツシ
ュ空水冷併用装置の正面図である。
２・・・タンディツシュ ４ °残鋼６・・残滓
８・ニアブロワ１２ 水冷ノズル
１６・水冷台車２０・回転式破砕機Figures 1 (A) and (B) show a cooling device for a tundish used in the present invention, A) is a front view, (B) is a side view,
Figure 2 is a diagram showing the relationship between the thickness of the residue on the residual steel and the cooling time ratio, Figure 3 is a diagram showing the cooling time ratio between air cooling alone and water cooling and air cooling, and Figure 4 is the relationship between the residual W4 exposure degree and A diagram showing the relationship between cooling time ratios, FIG. 5 is a diagram showing the cooling removal treatment cycle times of the present invention method and the conventional method, FIG. 6 is a front view of a conventional tanditshu independent air cooling device, and FIG. 7 is a diagram showing the conventional FIG. 2...Tandish 4 °Remaining steel 6...Residue 8.Near blower 12 Water cooling nozzle
16・Water-cooled trolley 20・Rotary crusher
Claims (1)
固化して除去する残湯の冷却除去方法において、固化し
た前記滓を前記金属の上表面の露出度が２〜２０％の範
囲になる如く機械的に破砕しつつ該金属を空水冷併用に
て冷却することを特徴とする容器内残湯の冷却除去方法
。(1) In a method for cooling and removing molten metal remaining in a container with slag, the solidified slag is removed by cooling and solidifying the molten metal remaining in a container with the upper surface of the metal being 2 to 20% exposed. A method for cooling and removing residual hot metal in a container, which comprises cooling the metal by using air and water cooling while mechanically crushing the metal into small pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26703185A JPS62127165A (en) | 1985-11-27 | 1985-11-27 | Cooling and removing method for residual molten metal in vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26703185A JPS62127165A (en) | 1985-11-27 | 1985-11-27 | Cooling and removing method for residual molten metal in vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62127165A true JPS62127165A (en) | 1987-06-09 |
Family
ID=17439087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26703185A Pending JPS62127165A (en) | 1985-11-27 | 1985-11-27 | Cooling and removing method for residual molten metal in vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62127165A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007111723A (en) * | 2005-10-19 | 2007-05-10 | Nippon Steel Corp | Method and apparatus for maintenance of tundish |
| KR100812144B1 (en) * | 2001-09-11 | 2008-03-12 | 주식회사 포스코 | Cooling water automatic spray apparatus for cooling residual slug in tundish |
-
1985
- 1985-11-27 JP JP26703185A patent/JPS62127165A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100812144B1 (en) * | 2001-09-11 | 2008-03-12 | 주식회사 포스코 | Cooling water automatic spray apparatus for cooling residual slug in tundish |
| JP2007111723A (en) * | 2005-10-19 | 2007-05-10 | Nippon Steel Corp | Method and apparatus for maintenance of tundish |
| JP4712513B2 (en) * | 2005-10-19 | 2011-06-29 | 新日本製鐵株式会社 | Tundish maintenance equipment |
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