JP2001011523A - Device for removing skull on sub-lance hole in converter - Google Patents
Device for removing skull on sub-lance hole in converterInfo
- Publication number
- JP2001011523A JP2001011523A JP11177229A JP17722999A JP2001011523A JP 2001011523 A JP2001011523 A JP 2001011523A JP 11177229 A JP11177229 A JP 11177229A JP 17722999 A JP17722999 A JP 17722999A JP 2001011523 A JP2001011523 A JP 2001011523A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- sub
- hole
- lance hole
- lance
- 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.)
- Granted
Links
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、転炉サブランス孔
の内壁面に付着した地金を短時間で確実に除去すること
ができる転炉サブランス孔地金除去装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a converter sub-lance hole ingot removing device which can surely remove ingots on the inner wall surface of a converter sub-lance hole in a short time.
【０００２】[0002]
【従来の技術】製鉄向上における転炉には通常、操業時
における分析サンプルの採取を目的として転炉サブラン
ス孔が設けられていて、この転炉サブランス孔内にサン
プル採取用のプルーブが内蔵されているサブランスを挿
入し、分析が行われている。ところが、この転炉サブラ
ンス孔の内壁面には転炉吹錬中に飛散した地金が徐々に
付着し、転炉サブランス孔を塞いでしまうという現象が
あった。このため、サブランスの挿入を確保するのに定
期的に地金を除去する必要があり、従来は作業員が棒で
たたき落としていた。2. Description of the Related Art A converter for improving steelmaking is usually provided with a converter sublance hole for the purpose of collecting an analysis sample during operation, and a probe for collecting a sample is built in the converter sublance hole. A sublance has been inserted and analysis has been performed. However, there was a phenomenon in which the metal scattered during the converter blowing gradually adhered to the inner wall surface of the converter sub-lance hole, and closed the converter sub-lance hole. For this reason, it is necessary to periodically remove the bullion in order to secure the insertion of the sublance, and in the past, an operator hit the rod with a stick.
【０００３】ところが、転炉サブランス孔がある転炉上
部は高所且つ高温な場所であって、作業環境が悪いため
に作業員の負荷が大きく、また、地金が強固に付着して
いるため人手で除去するには長時間要するという問題点
があり、更には、隣接したメインランスからの地金落下
による災害事故も懸念されるという問題点もあり、従来
の人手による作業方式に替えて機械設備による作業の自
動化が強く望まれていた。なお、ガスバーナーを利用し
て地金を自動切断除去する試みも行われたが、バーナー
では地金を十分に溶解・切断することが難しく、長時間
要するうえに転炉からの上昇気流によってバーナーフレ
ームが安定しない等の問題点があり、実用化には至って
いない。However, the upper part of the converter where the converter sub-lance holes are located is a high place and a high temperature place. There is a problem that it takes a long time to remove manually, and there is also a problem that a disaster may occur due to a drop of metal from the adjacent main lance. Automation of work by equipment has been strongly desired. Attempts have also been made to use a gas burner to automatically cut and remove the ingot, but it is difficult to melt and cut the ingot with a burner, it takes a long time, and the burner rises due to the rising airflow from the converter. There are problems such as instability of the frame, and it has not been put to practical use.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記のような
従来の問題点を解決して、従来の人手による作業に替え
て自動化設備により転炉サブランス孔の内壁面に付着し
た地金を短時間で確実に除去することができる転炉サブ
ランス孔地金除去装置を提供することを目的として完成
されたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, and reduces the metal ingot attached to the inner wall surface of the converter sublance hole by an automated facility instead of the conventional manual operation. The present invention has been completed for the purpose of providing a converter sub-lance hole metal removal device which can be surely removed in a short time.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の転炉サブランス孔地金除去装置
は、移動自在なフレームの先端にエアブレーカを昇降動
自在に取付け、このエアブレーカには、転炉サブランス
孔に下端が挿入されて転炉サブランス孔の内壁面に付着
した地金を剥離、除去するための打撃部材を取付けたこ
とを特徴とするものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a converter sub-lance hole metal removing device according to the present invention is provided with an air breaker mounted on a tip end of a movable frame so as to be movable up and down. The breaker is characterized in that a lower end is inserted into the converter sub-lance hole, and a striking member is attached for peeling and removing the base metal adhered to the inner wall surface of the converter sub-lance hole.
【０００６】[0006]
【発明の実施の形態】以下に、図面を参照しつつ本発明
の好ましい実施の形態を示す。図中、１は転炉の上部に
ある支柱イ等にブラケット２を介して旋回移動自在に取
付けられた鍵形のフレームであり、このフレーム１は、
例えば、その水平アーム部の端部とブラケット２間にあ
るギア３ｃをラックギア３ａを介してエアシリンダ３ｂ
で作動させることにより、邪魔にならない収納位置と、
転炉２０にあるサブランス孔２１の略真上の位置との間
を自在に旋回移動するよう構成されている。また、この
フレーム１の先端にはモートルシリンダ３を介してエア
ブレーカ４が連結されていて、エアブレーカ４はモート
ルシリンダ３の作動によりフレーム１の先端に形成され
た垂直枠１ａ内を自在に昇降動するよう構成されてい
る。さらに、このエアブレーカ４の下部には転炉サブラ
ンス孔に挿入されて転炉サブランス孔２１の内壁面に付
着した地金を剥離、除去するための打撃部材５が取り付
けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a key-shaped frame which is rotatably mounted via a bracket 2 on a column a or the like at the upper part of the converter.
For example, the gear 3c between the end of the horizontal arm and the bracket 2 is connected to the air cylinder 3b via the rack gear 3a.
By operating with, the storage position that does not get in the way,
It is configured to freely swing between a position substantially directly above the sub-lance hole 21 in the converter 20. An air breaker 4 is connected to the end of the frame 1 via a motor cylinder 3, and the air breaker 4 freely moves up and down in a vertical frame 1 a formed at the end of the frame 1 by the operation of the motor cylinder 3. It is configured to work. Further, a striking member 5 is attached to a lower portion of the air breaker 4 for peeling and removing the metal that is inserted into the converter sublance hole and adheres to the inner wall surface of the converter sublance hole 21.
【０００７】前記した打撃部材５は、エアブレーカ４の
下端にこのエアブレーカ４に対してフリーな状態で取付
けられた筒状アーム部５ｂと、その下端に耐摩耗性材よ
りなる逆碗状の拡径部材を溶接するなどして連設した裾
広がり状のテーパ面を有する打撃部５ａとよりなるもの
であり、この打撃部材５を前記転炉サブランス孔２１内
に挿入し、エアブレーカ４の作動で前記した打撃部５ａ
の端縁によって転炉サブランス孔２１の内壁面に付着し
た地金２２を剥離、除去するものとしている。このよう
に、本発明は従来の人手による方法やガスバーナによる
方法と異なり、地金２２に対して加圧および打撃振動を
与え、これにより、転炉サブランス孔２１の孔縁に付着
している地金２２を短時間で、且つ、全体を一体的に剥
離した状態で略１００％完全に除去することができるこ
ととなる。The striking member 5 has a cylindrical arm portion 5b attached to the lower end of the air breaker 4 in a free state with respect to the air breaker 4, and an inverted bowl-shaped lower end made of a wear-resistant material. A striking portion 5a having a flared flared tapered surface formed by welding a diameter-enlarging member or the like is inserted. The striking member 5 is inserted into the converter sub-lance hole 21 to form the air breaker 4. The hitting portion 5a described above in operation
The base metal 22 attached to the inner wall surface of the converter sub-lance hole 21 is peeled off and removed by the edge of the base metal. As described above, the present invention differs from the conventional manual method or gas burner method in that the pressurizing and impact vibration is applied to the base metal 22, whereby the ground adhered to the hole edge of the converter sublance hole 21. The gold 22 can be completely removed almost 100% in a short time and in a state where the whole is integrally peeled off.
【０００８】また、前記したように打撃部５ａは、裾広
がり状のテーパ面を有するものであるが、図２に示され
るように、そのテーパ面の角度θ1 は３〜６０°の範囲
とすることが好ましい。その理由は、テーパ面の角度θ
1 が３°未満では、地金２２に対して加圧および打撃振
動を与えた際、鋭角すぎて先端が地金２２に突き刺さっ
てしまい全体を一体的に剥離させることができなくな
り、テーパ面の角度θ1が６０°より大きいと、十分な
打撃振動を与えることが難しいうえに、地金２２に当た
って変形を生じるおそれがあるからである。なお、打撃
部５ａの下端縁は、内側上方に向け傾斜されている刃状
のものとしておけば、より効率的な地金除去ができる。
この場合、刃状部分の傾斜角度θ2 は５〜５０°の範囲
とすることが好ましい。その理由は、刃状部分の傾斜角
度θ2 が５°未満では、地金２２に引っ掛かりが弱くな
り十分な振動を与えることが難しくなり、刃状部分の傾
斜角度θ2 が５０°より大きいと先端が地金２２を削っ
てしまって、全体を一体的に剥離させることができ難く
するおそれがあるからである。Further, the hitting portion 5a as described above are those having a flared tapered surface, as shown in FIG. 2, the angle theta 1 of the tapered surface and the range of 3 to 60 ° Is preferred. The reason is that the angle θ of the tapered surface
When 1 is less than 3 °, when pressure and impact vibration are applied to the base metal 22, the tip is too sharp and the tip pierces the base metal 22, so that the entire body cannot be peeled off integrally, and the tapered surface the angle theta 1 is greater than 60 °, it is on top it is difficult to provide sufficient blow vibration, because there may occur a deformation against the ingot 22. In addition, if the lower end edge of the impact portion 5a is formed as a blade-like shape that is inclined inward and upward, more efficient metal removal can be performed.
In this case, the inclination angle theta 2 of the blade-shaped portion is preferably in the range of 5 to 50 °. The reason is that if the inclination angle θ 2 of the blade portion is less than 5 °, the blade 22 is less likely to be caught and difficult to give sufficient vibration, and if the inclination angle θ 2 of the blade portion is larger than 50 °. This is because the tip may scrape the base metal 22 and make it difficult to remove the whole body integrally.
【０００９】なお、図２に示した裾広がり状のテーパ面
を有する打撃部５ａは、逆碗状のものとしているが、裾
広がり状のテーパ面としては、図３に示されるように円
錐状のものや、図４に示されるようなラッパ状のもの、
或いは、図５に示されるように複数段に屈曲したものな
ど任意に設計できる。また、前記したように打撃部材５
を空洞体から構成しておけば、中実体からなるものに比
べて大幅な軽量化が図られることとなって、エアブレー
カ４の振動が効率よく伝達されるので特に好ましく、更
に、打撃部材５をエアブレーカ４に対して前記したよう
にフリーな状態で連結しておけば、打撃部材５が転炉サ
ブランス孔２１の内壁面に付着した地金に対して偏るこ
となく均等にバランスを保持した状態で接するため、効
率的に地金の剥離、除去が行えることとなるので好まし
い。The striking portion 5a having a flared tapered surface shown in FIG. 2 has an inverted bowl shape, but the flared tapered surface has a conical shape as shown in FIG. Or a trumpet as shown in FIG. 4,
Alternatively, it can be arbitrarily designed such as one bent in a plurality of steps as shown in FIG. Also, as described above, the striking member 5
Is formed from a hollow body, the weight is significantly reduced as compared with a solid body, and the vibration of the air breaker 4 is transmitted efficiently, which is particularly preferable. Is connected to the air breaker 4 in the free state as described above, so that the striking member 5 maintains the balance evenly with respect to the metal adhered to the inner wall surface of the converter sublance hole 21. Since the contact is made in a state, the base metal can be efficiently peeled and removed, which is preferable.
【００１０】このように構成されたものは、図６に示さ
れるように、常時は邪魔にならない位置にあるフレーム
１を転炉２０にあるサブランス孔２１の略真上の位置ま
で旋回移動させ、次いで、打撃部材５をサブランス孔２
１内に下降させる。そして、先端の打撃部５ａが地金に
当たった状態で押圧しつつエアブレーカ４を作動させる
と、裾広がり状のテーパ面を有する打撃部５ａは地金に
対し線接触の状態にあり、地金を破砕させることなく振
動を的確に伝達することとなる。この結果、地金は局部
的に削れたり破砕したりすることなく、一つの大きな塊
の状態でサブランス孔２１の内壁面から剥離、落下する
こととなるのである。その後は再び打撃部材５をサブラ
ンス孔２１の外へ上昇させ、更にフレーム１を元の位置
まで戻して待機状態とする。As shown in FIG. 6, the frame 1 having such a structure is configured to pivotally move the frame 1 at a position which is not always in the way to a position substantially above the sublance hole 21 in the converter 20, Next, the striking member 5 is inserted into the sub lance hole 2.
Lower into 1. When the air breaker 4 is actuated while pressing the hitting portion 5a at the tip in contact with the metal, the hitting portion 5a having a flared tapered surface is in line contact with the metal, Vibration can be transmitted accurately without breaking the gold. As a result, the metal is separated and dropped from the inner wall surface of the sublance hole 21 in one large lump without being locally scraped or crushed. Thereafter, the striking member 5 is raised again out of the sub-lance hole 21, and the frame 1 is returned to the original position to be in a standby state.
【００１１】なお、以上の１サイクルはわずかに１分程
度の作業であり、従来の人手による作業（６〜７分）に
比べて大幅な作業時間の短縮ができることとなり、しか
も、地金２２全体を一体的に剥離した状態で略１００％
完全に除去するできることとなる。Note that the above-mentioned one cycle is a work of only about one minute, so that the work time can be greatly reduced as compared with the conventional manual work (6 to 7 minutes). Approximately 100% in a state where
It can be completely removed.
【００１２】[0012]
【発明の効果】以上の説明からも明らかなように、本発
明は従来の人手による作業に替えて自動化設備により転
炉サブランス孔の内壁面に付着した地金を短時間で確実
に除去することができるものである。よって、本発明は
従来の問題点を一掃した転炉サブランス孔地金除去装置
として、産業の発展に寄与するところは極めて大であ
る。As is clear from the above description, the present invention is to remove metal adhered to the inner wall surface of the converter sublance hole by an automated facility in a short time, instead of the conventional manual operation. Can be done. Therefore, the present invention greatly contributes to the development of industry as a converter sub-lance hole metal removal device that has eliminated the conventional problems.
【図１】本発明の実施の形態を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】打撃部の形状を示す断面図である。FIG. 2 is a cross-sectional view showing a shape of a hitting portion.
【図３】その他の打撃部の形状を示す断面図である。FIG. 3 is a cross-sectional view illustrating another shape of a hitting portion.
【図４】その他の打撃部の形状を示す断面図である。FIG. 4 is a cross-sectional view illustrating another shape of a hitting portion.
【図５】その他の打撃部の形状を示す断面図である。FIG. 5 is a cross-sectional view showing another shape of the hitting portion.
【図６】本発明の使用例を示す断面図である。FIG. 6 is a sectional view showing a usage example of the present invention.
１ フレーム ３ モートルシリンダ ４ エアブレーカ ５ 打撃部材 5a 打撃部 5b 筒状アーム部 21 サブランス孔 DESCRIPTION OF SYMBOLS 1 Frame 3 Motor cylinder 4 Air breaker 5 Striking member 5a Striking part 5b Cylindrical arm part 21 Sub lance hole
Claims (5)
カを昇降動自在に取付け、このエアブレーカには、転炉
サブランス孔に下端が挿入されて転炉サブランス孔の内
壁面に付着した地金を剥離、除去するための打撃部材を
取付けたことを特徴とする転炉サブランス孔地金除去装
置。An air breaker is movably mounted on a front end of a movable frame so as to be movable up and down. A metal having a lower end inserted into a converter sublance hole and adhered to an inner wall surface of the converter sublance hole is attached to the air breaker. 2. A converter sub-lance hole metal removal device, comprising a striking member for peeling and removing.
られているモートルシリンダにより昇降動自在とされて
いる請求項１に記載の転炉サブランス孔地金除去装置。2. The apparatus according to claim 1, wherein the air breaker is movable up and down by a motor cylinder attached to a front end of the frame.
けられる筒状アーム部の下端に裾広がり状のテーパ面を
有する打撃部を設けたものである請求項１または２に記
載の転炉サブランス孔地金除去装置。3. The converter sub-lance according to claim 1, wherein the striking member has a striking portion having a flared tapered surface at a lower end of a cylindrical arm portion attached to a lower portion of the air breaker. Perforated metal removal equipment.
状に形成されたものである請求項１または２または３に
記載の転炉サブランス孔地金除去装置。4. The apparatus according to claim 1, wherein the impact portion has an inverted bowl shape, and a lower edge of the impact portion is formed in a blade shape.
ーな状態で取付けられている請求項１または２または３
または４に記載の転炉サブランス孔地金除去装置。5. The striking member is attached to the air breaker in a free state.
Or the converter sublance lance hole metal removing device according to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17722999A JP3943765B2 (en) | 1999-06-23 | 1999-06-23 | Converter sublance hole metal removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17722999A JP3943765B2 (en) | 1999-06-23 | 1999-06-23 | Converter sublance hole metal removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001011523A true JP2001011523A (en) | 2001-01-16 |
| JP3943765B2 JP3943765B2 (en) | 2007-07-11 |
Family
ID=16027420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17722999A Expired - Fee Related JP3943765B2 (en) | 1999-06-23 | 1999-06-23 | Converter sublance hole metal removal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3943765B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100487771B1 (en) * | 2001-12-18 | 2005-05-03 | 주식회사 포스코 | Device for removing scrap provided equipment oxygen injection in electric furnace |
| KR100727109B1 (en) | 2006-03-03 | 2007-06-13 | 주식회사 포스코 | Device for removing the skull attached at sub-material addition hole of converter |
| CN101328524B (en) * | 2008-07-25 | 2010-06-02 | 上海宝钢工程技术有限公司 | Automatic detaching apparatus of auxiliary lance probe |
| KR20160077328A (en) | 2014-12-22 | 2016-07-04 | 주식회사 포스코 | The converter operation method |
| KR102078960B1 (en) * | 2019-04-05 | 2020-02-19 | 주식회사 엔에스엠피 | Adhered materials remover of an electric furnace sand inlet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230023297A (en) | 2021-08-10 | 2023-02-17 | 주식회사 포스코 | Removing apparatus of accretion |
-
1999
- 1999-06-23 JP JP17722999A patent/JP3943765B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100487771B1 (en) * | 2001-12-18 | 2005-05-03 | 주식회사 포스코 | Device for removing scrap provided equipment oxygen injection in electric furnace |
| KR100727109B1 (en) | 2006-03-03 | 2007-06-13 | 주식회사 포스코 | Device for removing the skull attached at sub-material addition hole of converter |
| CN101328524B (en) * | 2008-07-25 | 2010-06-02 | 上海宝钢工程技术有限公司 | Automatic detaching apparatus of auxiliary lance probe |
| KR20160077328A (en) | 2014-12-22 | 2016-07-04 | 주식회사 포스코 | The converter operation method |
| KR102078960B1 (en) * | 2019-04-05 | 2020-02-19 | 주식회사 엔에스엠피 | Adhered materials remover of an electric furnace sand inlet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3943765B2 (en) | 2007-07-11 |
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