JPS6352987B2 - - Google Patents
Info
- Publication number
- JPS6352987B2 JPS6352987B2 JP22282185A JP22282185A JPS6352987B2 JP S6352987 B2 JPS6352987 B2 JP S6352987B2 JP 22282185 A JP22282185 A JP 22282185A JP 22282185 A JP22282185 A JP 22282185A JP S6352987 B2 JPS6352987 B2 JP S6352987B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- nozzle
- pipe
- mold
- continuous casting
- 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
- 239000000843 powder Substances 0.000 claims description 52
- 239000006185 dispersion Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000009749 continuous casting Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/108—Feeding additives, powders, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は連続鋳造用パウダーの散布方法及び装
置、特にモールド内に均一に散布し得る方法及び
そのための装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for dispersing powder for continuous casting, and particularly to a method and apparatus for uniformly dispersing powder into a mold.
（従来の技術）
通常、鋼の連続鋳造に際しては、鋳型内溶鋼表
面の酸化防止、鋳型と鋳片との潤滑、浮上介在物
の捕捉等を目的として、溶鋼表面に顆粒状又は粉
体状パウダーを散布して被覆している。最近で
は、このパウダーの鋳型への搬送・散布方式とし
て自動的な手段が用いられている。(Prior art) Normally, during continuous casting of steel, granular or powder-like powder is applied to the surface of the molten steel for the purpose of preventing oxidation of the surface of the molten steel in the mold, lubrication between the mold and the slab, capturing floating inclusions, etc. It is covered by spraying. Recently, automatic means have been used to convey and spread this powder to the mold.
従来の自動的なパウダー搬送・散布手段は、ス
クリユーフイーダーに代表される機械輸送方式と
気体輸送方式に大別されるが、このうち本発明が
対象としている気体輸送方式は、タンクに貯蔵し
たパウダーをN2ガスにて給送管内を圧送し、先
端に取付けたノズルから鋳型内の溶鋼へ散布する
ものである。このようなパウダー供給・散布法お
よび装置としては特開昭60−54253号公報、実開
昭58−137435号公報等が提案されている。 Conventional automatic powder conveyance and dispersion means are broadly divided into mechanical transport methods represented by screw feeders and gas transport methods. Of these, the gas transport method targeted by the present invention is a method for storing powder in a tank. The powder is pumped through the feed pipe using N2 gas, and is sprayed onto the molten steel in the mold from a nozzle attached to the tip. Such powder supply/spreading methods and devices have been proposed in Japanese Patent Application Laid-open No. 54253/1983, Japanese Utility Model Application No. 137435/1983, and the like.
（発明が解決しようとする問題点）
しかしながら、上述した従来のパウダー供給・
散布手段においては、その使用しているノズル構
造に起因して、鋳型内におけるパウダー分布状態
が均一にならない問題があつた。すなわち、通常
散布ノズルはパイプスリツト型を使用しているた
め、パウダー輸送圧力の高低により鋳型内の散布
状態（分布）が変動し一定しない。例えば、圧力
が高い場合はノズル先端側に散布量が多くなり、
逆に圧力が低い場合はノズル後端側に散布量が多
くなる傾向があり、均一な散布が不可能となる。(Problems to be solved by the invention) However, the above-mentioned conventional powder supply method
In the dispersion means, there was a problem that the powder distribution state within the mold was not uniform due to the nozzle structure used. That is, since a pipe slit type spraying nozzle is normally used, the spraying state (distribution) within the mold fluctuates and is not constant depending on the level of powder transport pressure. For example, if the pressure is high, the amount of spray will increase towards the nozzle tip,
Conversely, when the pressure is low, the amount of spray tends to increase toward the rear end of the nozzle, making uniform spraying impossible.
本発明はこのような従来の問題点を解決し、輸
送圧力の高低に左右されず、常に均一なパウダー
散布を可能にすることを目的とする。 It is an object of the present invention to solve these conventional problems and to enable uniform powder dispersion at all times, regardless of the level of transport pressure.
（問題点を解決するための手段）
上記目的を達成するための本発明の具体的な構
成は次の通りである。(Means for Solving the Problems) The specific configuration of the present invention for achieving the above object is as follows.
(1) 顆粒状又は粉体状連続鋳造用パウダーを給送
配管を通して圧送し、該配管先端に設けた散布
ノズルによつて鋳型内溶鋼表面上に散布するパ
ウダーの散布方法いおいて、
前記ノズルとして鋳型内の複数箇所に夫々独
立して散布可能な構造のノズルを用い、該ノズ
ル直前位置にてパウダーを増速すると共に、各
独立したノズル毎にパウダーを分配しかつその
供給量を調整可能とし、均一に散布し得るよう
にしたことを特徴とする連続鋳造用パウダーの
散布方法。(1) A powder dispersion method in which granular or powdered powder for continuous casting is force-fed through a feeding pipe, and is dispersed onto the surface of molten steel in a mold by a dispersion nozzle provided at the tip of the pipe, the method comprising: By using nozzles that can be sprayed independently at multiple locations within the mold, the powder can be sped up at the position directly in front of the nozzle, and the powder can be distributed to each independent nozzle and its supply amount can be adjusted. A method for dispersing powder for continuous casting, characterized in that the powder can be uniformly dispersed.
(2) 顆粒状又は粉体状連続鋳造用パウダーを圧送
する配管と、該配管先端に設けた散布ノズルと
を有するパウダーの散布装置において、
前記ノズルを鋳型内の複数箇所に夫々独立し
て散布可能な構造に形成し、該散布ノズルの直
前に、パウダー増速器と、前記の各独立ノズル
と同数にかつ夫々に連通するように管断面を複
数に区分する分岐翼および各分岐流を独立して
調整可能とする調整弁を内蔵する分配器とを、
配置したことを特徴とする連続鋳造用パウダー
の散布装置。(2) In a powder dispersion device having a pipe for pumping granular or powdered powder for continuous casting and a dispersion nozzle installed at the tip of the pipe, the nozzle is used to independently spray at multiple locations within the mold. Immediately in front of the spray nozzle, there is a powder speed increaser, a branch blade that divides the pipe cross section into a plurality of parts so as to have the same number of independent nozzles as the above-mentioned independent nozzles, and to communicate with each other, and to separate each branch flow. A distributor with a built-in adjustment valve that can be adjusted by
A powder dispersion device for continuous casting, characterized in that:
（実施例）
以下本発明を図面に示す実施例に基づいて詳細
に説明する。(Example) The present invention will be described in detail below based on an example shown in the drawings.
第１図に示すものは、本発明散布装置の使用態
様であり、タンデイツシユ６内の溶鋼は浸漬ノズ
ル７を通つて鋳型８へ供給されるが、鋳型内溶鋼
１０表面にはパウダー散布ノズル１によつてパウ
ダー９が散布される。散布ノズル１は図示のよう
に、矩形鋳型の長辺にそつて一対対向して設置さ
れるが、その取付位置は例えばタンデイツシユ６
の底部に装着することができる。 What is shown in FIG. 1 is a mode of use of the spraying device of the present invention, in which the molten steel in the tundish 6 is supplied to the mold 8 through the immersion nozzle 7. Thus, the powder 9 is dispersed. As shown in the figure, the spray nozzles 1 are installed along the long sides of a rectangular mold in a pair facing each other.
It can be attached to the bottom of the
散布ノズル１部分の詳細を第２図に示すが、ノ
ズル部は長さの異なる４本の角型ノズル１Ａ，１
Ｂ，１Ｃ，１Ｄを各一端を一致させるように組合
せて構成され、各ノズルにはパウダー吐出口１
Ｅ，１Ｆ，１Ｇ，１Ｈが同一方向に形成され、該
パウダー吐出口１Ｅ，１Ｆ，１Ｇ，１Ｈは鋳型長
手方向にそつてほぼ均等に配置されることにな
る。このノズル部の一端には円筒状の分配器２が
接続され、該分配器２にはさらに増速器３および
配管（ホース）４が連設されており、該配管４は
パウダー供給源（図示しない）に続いている。 The details of the spray nozzle 1 part are shown in Figure 2, and the nozzle part consists of four rectangular nozzles 1A, 1 with different lengths.
B, 1C, and 1D are combined so that one end of each is aligned, and each nozzle has a powder discharge port 1.
E, 1F, 1G, and 1H are formed in the same direction, and the powder discharge ports 1E, 1F, 1G, and 1H are arranged almost equally along the longitudinal direction of the mold. A cylindrical distributor 2 is connected to one end of this nozzle part, and a speed increaser 3 and a pipe (hose) 4 are connected to the distributor 2, and the pipe 4 is connected to a powder supply source (not shown). (not).
上記分配器２の内部は前記角型ノズル１の数に
合わせた室数に分割され、各室はそれぞれ各ノズ
ル対応して連通している。すなわち、分配器本体
内には第４図に示す＋字状の分岐翼部材２Ｃが第
５図の如く固着されて内部を４室に区分し、各室
が前記ノズル１Ａ〜１Ｄにそれぞれ連通してお
り、かつ各室内には第７図に示す三角形の調整弁
２Ａが、その底辺側を支点にして回動する如くセ
ツトされ、該弁２Ａはその先端側を外部から調整
ボルト２Ｂによつて移動調整され、それによつて
パウダー供給量を調節し得るようになつている。
勿論、該調整弁２Ａを完全に閉じることにより、
パウダーの輸送を停止することもできる。 The inside of the distributor 2 is divided into a number of chambers corresponding to the number of square nozzles 1, and each chamber communicates with each nozzle. That is, a +-shaped branching wing member 2C shown in FIG. 4 is fixed inside the distributor main body as shown in FIG. In addition, a triangular adjustment valve 2A shown in FIG. 7 is set in each chamber so as to rotate about its base side as a fulcrum. The movement is adjusted, thereby making it possible to adjust the powder feed rate.
Of course, by completely closing the regulating valve 2A,
It is also possible to stop transporting powder.
また、上記増速器３は第３図に示すように、分
配器２側に向つて傾斜した増速孔３Ｃを本体に形
成し、その周囲に、気体入口３Ａを有するタンク
３Ｂを配置してなるもので、配管４から搬送され
てくるパウダーを均等に拡散する機能をもつ。な
お、増速孔３Ｃはスリツト状に形成してもよく、
或いは複数の孔にて構成してもよい。 Further, as shown in FIG. 3, the speed increaser 3 has a speed increase hole 3C formed in the main body that is inclined toward the distributor 2 side, and a tank 3B having a gas inlet 3A arranged around the speed increase hole 3C. It has the function of evenly dispersing the powder conveyed from the pipe 4. Note that the speed increasing hole 3C may be formed in a slit shape,
Alternatively, it may be configured with a plurality of holes.
さらに、第８図に示すものは、各ノズル１に取
付ける分配アタツチメント１１であり、ノズル取
付部１２と、該取付部直下に設けた分配突起１３
と、鋳型幅方向に延びるパウダー分配筒１４とか
ら構成される。 Furthermore, what is shown in FIG. 8 is a distribution attachment 11 attached to each nozzle 1, including a nozzle attachment part 12 and a distribution protrusion 13 provided directly below the attachment part.
and a powder distribution cylinder 14 extending in the width direction of the mold.
このように構成された本発明のパウダー散布装
置を第１図に示すように、連続鋳造用鋳型とタン
デイツシユ間に配置して用いる。しかして、パウ
ダー供給源より配管４によつて輸送されるパウダ
ーは、所定圧力の気体が入口３Ａからタンク３Ｂ
へ送り込まれ増速孔３Ｃを経て増速器３の内部へ
噴出することによつて、均等に拡散され、分配器
２に送られる。該分配器２の内部において分岐翼
２Ｃによりパウダーは均等に区分数に応じて分配
され、各散布ノズル１Ａ〜１Ｄの吐出口１Ｅ〜１
Ｈから鋳型内の溶鋼表面に散布される。なお、鋳
型内のパウダー散布状態が不均一の場合は、適宜
各調整弁２Ａをボルト２Ｂにて調整することによ
つて、均一に維持することができる。 As shown in FIG. 1, the powder dispersing device of the present invention constructed as described above is used by being placed between a continuous casting mold and a tundish. The powder transported from the powder supply source through the pipe 4 is supplied with gas at a predetermined pressure from the inlet 3A to the tank 3B.
The fuel is sent into the speed increaser 3 through the speed increase hole 3C, thereby being uniformly diffused and sent to the distributor 2. Inside the distributor 2, the powder is evenly distributed according to the number of divisions by the branching blades 2C, and the powder is distributed evenly according to the number of divisions, and the powder is distributed through the discharge ports 1E to 1 of each of the spray nozzles 1A to 1D.
H is sprayed onto the surface of the molten steel in the mold. In addition, if the state of powder dispersion in the mold is uneven, it can be maintained uniformly by appropriately adjusting each regulating valve 2A with the bolt 2B.
（発明の効果）
以上説明した本発明のパウダー散布方法によれ
ば、パウダーの輸送圧力がどのように変化して
も、溶鋼表面にパウダーを常に均一な状態で散布
することができ、安定した連続鋳造作業に寄与す
る。また、本発明の散布装置によれば、上記散布
方法を効果的に実施し得ると共に、パウダー供給
量を容易かつ確実に調整可能であり、その工業的
価値も大きい。(Effects of the Invention) According to the powder scattering method of the present invention as explained above, powder can always be uniformly spread on the surface of molten steel no matter how the powder transportation pressure changes, and stable continuous scattering can be achieved. Contribute to casting work. Moreover, according to the spraying device of the present invention, the above-mentioned spraying method can be carried out effectively, and the amount of powder supplied can be easily and reliably adjusted, and its industrial value is also great.
第１図は本発明に係る散布装置の使用状態を示
す断面図、第２図は本発明装置における散布ノズ
ルの具体例を示す斜視図、第３図は本発明装置に
おける増速器と分配器を示す断面図、第４図は分
配器の分岐翼の例を示す斜視図、第５図は分配器
の正面断面図、第６図は分配器のパウダー供給量
調整機構の例を示す断面図、第７図は調整弁の平
面図、第８図はノズル先端に取付ける分配アタツ
チメントの例を示す断面図である。
１……散布ノズル、１Ａ〜１Ｄ……ノズル、１
Ｅ〜１Ｈ……吐出口、２……分配器、２Ａ……調
整弁、２Ｂ……調整ボルト、２Ｃ……分岐翼、３
……増速器、３Ａ……気体入口、３Ｂ……タン
ク、３Ｃ……増速孔、４……配管。
Fig. 1 is a sectional view showing the usage state of the spraying device according to the present invention, Fig. 2 is a perspective view showing a specific example of the spraying nozzle in the device of the present invention, and Fig. 3 is a speed increaser and a distributor in the device of the present invention. 4 is a perspective view showing an example of the branching blade of the distributor, FIG. 5 is a front sectional view of the distributor, and FIG. 6 is a sectional view showing an example of the powder supply amount adjustment mechanism of the distributor. , FIG. 7 is a plan view of the regulating valve, and FIG. 8 is a sectional view showing an example of a distribution attachment attached to the tip of the nozzle. 1... Spraying nozzle, 1A to 1D... Nozzle, 1
E~1H...discharge port, 2...distributor, 2A...adjustment valve, 2B...adjustment bolt, 2C...branch blade, 3
... Speed increaser, 3A ... Gas inlet, 3B ... Tank, 3C ... Speed increase hole, 4 ... Piping.
Claims (1)
配管を通して圧送し、該配管先端に設けた散布ノ
ズルによつて鋳型内溶鋼表面上に散布するパウダ
ーの散布方法において、 前記ノズルとして鋳型内の複数箇所に夫々独立
して散布可能な構造のノズルを用い、該ノズル直
前位置にてパウダーを増速すると共に、各独立し
たノズル毎にパウダーを分配しかつその供給量を
調整可能とし、均一に散布し得るようにしたこと
を特徴とする連続鋳造用パウダーの散布方法。 ２ 顆粒状又は粉体状連続鋳造用パウダーを圧送
する配管と、該配管先端に設けた散布ノズルとを
有するパウダーの散布装置において、 前記ノズルを鋳型内の複数箇所に夫々独立して
散布可能な構造に形成し、該散布ノズルの直前
に、パウダー増速器と、前記の各独立ノズルと同
数にかつ夫々に連通するように管断面を複数に区
分する分岐翼および各分岐流を独立して調整可能
とする調整弁を内蔵する分配器とを、配置したこ
とを特徴とする連続鋳造用パウダーの散布装置。[Scope of Claims] 1. A powder dispersion method in which granular or powdered continuous casting powder is force-fed through a feeding pipe and sprayed onto the surface of molten steel in a mold by a dispersion nozzle provided at the tip of the pipe, As the nozzle, a nozzle having a structure that can be sprayed independently to multiple locations in the mold is used, and the powder is accelerated at a position immediately before the nozzle, and the powder is distributed to each independent nozzle and the amount of powder supplied is controlled. A method for dispersing powder for continuous casting, which is adjustable and can be uniformly dispersed. 2. A powder dispersion device having a pipe for force-feeding granular or powdered powder for continuous casting, and a dispersion nozzle provided at the tip of the pipe, wherein the nozzle is capable of independently dispersing to multiple locations within the mold. Immediately in front of the spray nozzle, a powder speed increaser, branch blades that divide the pipe cross section into a plurality of parts so as to be in communication with each of the independent nozzles, and to separate each branch flow independently. A powder dispersion device for continuous casting, characterized in that it is equipped with a distributor having a built-in adjustment valve that can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22282185A JPS6284858A (en) | 1985-10-08 | 1985-10-08 | Method and device for spraying powder for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22282185A JPS6284858A (en) | 1985-10-08 | 1985-10-08 | Method and device for spraying powder for continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6284858A JPS6284858A (en) | 1987-04-18 |
| JPS6352987B2 true JPS6352987B2 (en) | 1988-10-20 |
Family
ID=16788435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22282185A Granted JPS6284858A (en) | 1985-10-08 | 1985-10-08 | Method and device for spraying powder for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6284858A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230011017A (en) | 2021-07-13 | 2023-01-20 | 한국철도기술연구원 | Measurement system for abrasion profile of brake disk |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100831350B1 (en) | 2006-11-28 | 2008-05-21 | 주식회사 포스코 | Flux feeder |
| CN101497114B (en) * | 2009-03-26 | 2011-06-01 | 田志恒 | Device and method for adding protecting slag in crystallizer of continuous casting machine |
-
1985
- 1985-10-08 JP JP22282185A patent/JPS6284858A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230011017A (en) | 2021-07-13 | 2023-01-20 | 한국철도기술연구원 | Measurement system for abrasion profile of brake disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6284858A (en) | 1987-04-18 |
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