JP3307089B2 - Molten metal dripping equipment - Google Patents
Molten metal dripping equipmentInfo
- Publication number
- JP3307089B2 JP3307089B2 JP14706394A JP14706394A JP3307089B2 JP 3307089 B2 JP3307089 B2 JP 3307089B2 JP 14706394 A JP14706394 A JP 14706394A JP 14706394 A JP14706394 A JP 14706394A JP 3307089 B2 JP3307089 B2 JP 3307089B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- holder
- molten metal
- sleeve
- drip
- 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 - Fee Related
Links
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、銅、金などの球状金属
粒子を製造するのに好適な溶融金属の滴下装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for dropping molten metal suitable for producing spherical metal particles such as copper and gold.
【０００２】[0002]
【従来技術とその課題】従来、金属粒を製造する方法と
しては、機械的粉砕法、液体噴霧法、滴下法、気化凝集
法、転造法、電解法などが実用化され目的に応じてそれ
ぞれ利用されている。上記方法の中で滴下法は、金属の
溶湯をノズルから冷却媒体に滴下させて粒状化する方法
であり、比較的簡便に金属粒子を製造できる利点を有し
ている。この方法を実施する滴下装置に使用されるノズ
ルは、高温の溶融金属を一様に滴下するために熱膨張が
起こりにくい材質、例えばカーボンやタングステンなど
によって製造されているが、これらの材質は加工が困難
であるため溶湯口にネジ止めする等の直接的な装着手段
を用い難く、そのため、滴下ノズルを保持するホルダを
用い、該ホルダを介して溶湯口に装着している。2. Description of the Related Art Conventionally, as a method for producing metal particles, a mechanical pulverization method, a liquid spray method, a dropping method, a vaporization coagulation method, a rolling method, an electrolytic method, etc. have been put into practical use. It's being used. Among the above methods, the dropping method is a method in which a molten metal is dropped from a nozzle onto a cooling medium and granulated, and has an advantage that metal particles can be produced relatively easily. The nozzle used in the dripping device that implements this method is made of a material that does not easily undergo thermal expansion in order to uniformly drop the high-temperature molten metal, for example, carbon or tungsten, but these materials are processed. Therefore, it is difficult to use direct mounting means such as screwing to the melt port, and therefore, a holder for holding the drip nozzle is used, and the drop nozzle is mounted to the melt port via the holder.
【０００３】従来の一般的な滴下装置の例を図３に示
す。図示するように、従来の滴下装置は、滴下ノズル５
０、該滴下ノズル５０を保持する筒状のホルダ５１およ
び滴下ノズル５０と溶湯口５３を繋ぐスリーブ５２によ
って形成されている。滴下ノズル５０の上端部はホルダ
５１の下端内部に嵌着して該下端部に係合し、これによ
り滴下ノズル５０がホルダ５１に吊下げられた状態で保
持されている。一方、ホルダ５１はその上端に設けた連
結棒５４を介して溶湯槽のフランジ部分５５にボルト止
めされている。スリーブ５２と滴下ノズル５０の接合面
は漏れを生じないように研磨して接合されており、ホル
ダ５１と連結棒５４との間のボルト５６等を締め付ける
ことによりノズル上端面をスリーブ下端面に押圧してシ
ールするように形成されている。ところが、滴下装置に
は高温の金属融体が導入され、また滴下装置の回りには
加熱装置が設けられているなど高温下で使用されるため
に、従来の滴下装置ではホルダおよび連結部分の熱膨張
により、最初の数回あるいは最大でも１０回程度の滴下
によりノズルとスリーブとの接合面のシール不良を生
じ、さらには連結部が熱変形して締め付け圧力がシール
部分に付加されないなどの問題がある。FIG. 3 shows an example of a conventional general dropping device. As shown in FIG.
0, a cylindrical holder 51 for holding the dripping nozzle 50 and a sleeve 52 for connecting the dripping nozzle 50 and the melt port 53. The upper end of the drip nozzle 50 is fitted inside the lower end of the holder 51 and is engaged with the lower end, whereby the drip nozzle 50 is held in a suspended state by the holder 51. On the other hand, the holder 51 is bolted to a flange portion 55 of a molten metal tank via a connecting rod 54 provided at an upper end thereof. The joint surface between the sleeve 52 and the drip nozzle 50 is polished and joined so as not to cause leakage, and the upper end surface of the nozzle is pressed against the lower end surface of the sleeve by tightening a bolt 56 or the like between the holder 51 and the connecting rod 54. It is formed so as to seal. However, since a high-temperature metal melt is introduced into the dropping device, and a heating device is provided around the dropping device, the device is used at a high temperature. Due to the expansion, the first few drops or at most about 10 drops at the maximum will cause poor sealing at the joint surface between the nozzle and the sleeve, and furthermore, the connecting part will be thermally deformed and the tightening pressure will not be applied to the seal part. is there.
【０００４】[0004]
【課題の解決手段】本発明は従来の滴下装置における上
記問題を解決したものであって、ホルダを介して滴下ノ
ズルを弾性支持し、この弾性力によって滴下ノズルをス
リーブ端面に圧接させた構造にすることにより、ホルダ
やその支持部の熱膨張による伸縮を該支持構造に吸収さ
せて滴下ノズルとスリーブの接合面におけるシール漏れ
を防止したものである。The present invention solves the above-mentioned problem in the conventional dropping apparatus, and has a structure in which a dropping nozzle is elastically supported via a holder, and the dropping nozzle is pressed against the end face of the sleeve by this elastic force. By doing so, expansion and contraction due to thermal expansion of the holder and its supporting portion are absorbed by the supporting structure, thereby preventing seal leakage at the joint surface between the drip nozzle and the sleeve.
【０００５】 すなわち、本発明によれば以下の構成か
らなる装置が提供される。 （１） 溶湯槽から溶融金属を冷却媒体中に滴下して金
属粒を製造する滴下装置であって、溶湯槽の滴下口に装
着されたノズル支持部、該ノズル支持部の下端に設けら
れた滴下ノズルおよび該滴下ノズルと滴下口を繋ぐスリ
ーブを有し、ノズル支持部は滴下ノズルを吊下保持する
ホルダと該ホルダを支持する連結部を有し、該連結部は
バネ部材を介して溶湯槽の受け部に連結されており、上
記ホルダは該連結部および連結部上端に設けたバネ部材
を介し溶湯槽に引き付けて弾性支持されており、さらに
該ホルダに支持された滴下ノズルの上端面は上記スリー
ブの下端面に突き合わされており、上記連結部の弾性支
持力によって滴下ノズルの上端面がスリーブ下端面に圧
接されることによってこの接続面がメカニカルシールさ
れていることを特徴とする溶融金属の滴下装置。 （２） ホルダが筒状をなし、滴下ノズルの上端部が該
ホルダの下端内部に突出て嵌着係合しており、ホルダ内
部において滴下ノズルの上端面とスリーブ下端面とが突
き合わされ、上記連結部の弾性支持力によって滴下ノズ
ルの上端面がスリーブ下端面に圧接されていることを特
徴とする上記(1)の滴下装置。 （３） 熱遮蔽板が、滴下ノズルとホルダとの接続部分
および／または連結部に設置されている上記(1)の装
置。That is, according to the present invention, there is provided an apparatus having the following configuration. (1) A dropping device for dropping a molten metal from a molten metal tank into a cooling medium to produce metal particles, and is provided at a nozzle support portion attached to a dropping port of the molten metal bath, and at a lower end of the nozzle support portion. A drip nozzle and a sleeve connecting the drip nozzle and the drip port; the nozzle support has a holder for suspending and holding the drip nozzle and a connection for supporting the holder; and the connection is molten metal via a spring member. The holder is connected to a receiving portion of the tank, the holder is elastically supported by being attracted to the molten metal tank via a spring member provided on the connection portion and the upper end of the connection portion, and further, an upper end surface of a drip nozzle supported by the holder. Is abutted against the lower end surface of the sleeve, and the connection surface is mechanically sealed by pressing the upper end surface of the dropping nozzle against the lower end surface of the sleeve by the elastic supporting force of the connecting portion. Molten metal dropping device. (2) The holder has a cylindrical shape, and the upper end of the drip nozzle projects into and engages with the lower end of the holder, and the upper end surface of the drip nozzle and the lower end surface of the sleeve abut inside the holder. The dropping device according to (1), wherein the upper end surface of the dripping nozzle is pressed against the lower end surface of the sleeve by the elastic supporting force of the connecting portion. (3) The apparatus according to the above (1), wherein the heat shield plate is provided at a connection portion and / or a connection portion between the drip nozzle and the holder.
【０００６】[0006]
【具体的な構成】以下、本発明に係る滴下装置の具体的
な構成例を図面を参照して説明する。なお図示する装置
構成は例示であり、本発明の範囲を制限するものではな
い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific configuration example of a dropping device according to the present invention will be described with reference to the drawings. Note that the illustrated device configuration is an example, and does not limit the scope of the present invention.
【０００７】図１は本発明に係る滴下装置の全体を示す
概略断面図であり、図２は滴下ノズルとホルダとの吊着
部分の部分断面図である。図示するように本発明の滴下
装置は、溶湯槽の滴下口に装着されたノズル支持部１
０、該ノズル支持部の下端に設けられた滴下ノズル２０
および該滴下ノズルと滴下口を繋ぐスリーブ３０によっ
て形成されている。ノズル支持部１０は筒状のホルダ１
１と棒状の連結部１２および溶湯槽のフランジ部分４０
から下向きに突出した受け部１３からなり、連結部１２
の上端はバネ部材１４を介して受け部１３に連結され、
一方、ホルダ１１の上端は該連結部１２の下端に連結さ
れており、該ホルダ１１は上記連結部１２およびバネ部
材１４を介して受け部１３に弾性支持されている。FIG. 1 is a schematic sectional view showing the entirety of a dropping device according to the present invention, and FIG. 2 is a partial sectional view of a hanging portion between a dropping nozzle and a holder. As shown in the drawing, the dropping device of the present invention comprises a nozzle support 1 mounted on a dropping port of a molten metal tank.
0, a dripping nozzle 20 provided at the lower end of the nozzle support portion
And a sleeve 30 connecting the dropping nozzle and the dropping port. The nozzle support 10 is a cylindrical holder 1
1 and a rod-shaped connecting portion 12 and a flange portion 40 of a molten metal tank
And a receiving portion 13 projecting downward from the connecting portion 12.
Is connected to the receiving portion 13 via a spring member 14,
On the other hand, the upper end of the holder 11 is connected to the lower end of the connecting portion 12, and the holder 11 is elastically supported by the receiving portion 13 via the connecting portion 12 and the spring member 14.
【０００８】上記滴下ノズル２０の上端部２１はホルダ
１１の下端内部に嵌着し、ホルダ１１の底部１１ａに係
合しており、この構造により滴下ノズル２０がホルダ１
１に吊下げた状態で保持されている。一方、滴下ノズル
２０の上端面とスリーブ３０の下端面は互いに密着する
ように研磨され、ホルダ１１の内部において、滴下ノズ
ル上端面はスリーブ下端面に突き合わせて接合され、さ
らにホルダ１１はバネ部材１４を介して受け部１３に弾
性支持され溶湯槽側に付勢されているので、この引張り
圧力を受けて滴下ノズル２０の上端面はスリーブ下端面
に圧接され、これにより滴下ノズルとスリーブとの接合
部分にメカニカルシールが形成されている。The upper end 21 of the dripping nozzle 20 is fitted inside the lower end of the holder 11 and is engaged with the bottom 11a of the holder 11. With this structure, the dripping nozzle 20 is
1 and is held in a suspended state. On the other hand, the upper end surface of the dripping nozzle 20 and the lower end surface of the sleeve 30 are polished so as to be in close contact with each other, and inside the holder 11, the upper end surface of the dripping nozzle is joined to the lower end surface of the sleeve and joined. The upper end surface of the drip nozzle 20 is pressed against the lower end surface of the sleeve by receiving the tensile pressure because the elastic member is elastically supported by the receiving portion 13 and is urged toward the molten metal tank side, thereby joining the drip nozzle and the sleeve. A mechanical seal is formed in the portion.
【０００９】溶湯槽の溶湯口４１から流下する溶融金属
は、スリーブ３０を経て滴下ノズル２０に導かれ、ノズ
ル口２１から滴下される。この高温下での使用により、
ホルダ１１およびスリーブ３０が熱膨張し、滴下ノズル
とスリーブとの接合部分の圧力が増してもバネ部材１４
の収縮によってこれらの伸びが吸収されるのでシール面
が保護される。一方、ホルダ１１やスリーブ３０が冷却
収縮した時には、これに伴ってバネ部材１４が伸びるの
で滴下ノズル２０が上側に引き付けられ、滴下ノズル２
０とスリーブ３０とのシール面には常にほぼ一定の圧接
力が加わり、シール漏れを生じない。The molten metal flowing down from the molten metal port 41 of the molten metal tank is guided to the dripping nozzle 20 through the sleeve 30 and is dripped from the nozzle port 21. By using this high temperature,
Even when the holder 11 and the sleeve 30 thermally expand and the pressure at the joint between the drip nozzle and the sleeve increases, the spring member 14
The expansion is absorbed by the shrinkage of the seal, thereby protecting the sealing surface. On the other hand, when the holder 11 and the sleeve 30 are cooled and contracted, the spring member 14 is extended along with the contraction, so that the drip nozzle 20 is attracted upward and the drip nozzle 2
A substantially constant pressing force is always applied to the sealing surface between the sleeve 0 and the sleeve 30, and no sealing leakage occurs.
【００１０】上記滴下装置には、ノズル部分、ホルダお
よびスリーブなどへの不要な伝熱を抑えるために遮蔽板
６０を設けることが好ましい。図示する例では、ホルダ
１１と滴下ノズル２０との係合部分の直下、ホルダ１１
と連結部との接合部分および連結部１２の中央に遮蔽板
６０を設けている。遮蔽板６０により、滴下装置を囲む
加熱装置から輻射熱が遮られ、ホルダや連結部などの熱
膨脹を抑制し、またバネ部材１４が熱で劣化するのを防
止することができる。It is preferable that the dropping device is provided with a shielding plate 60 in order to suppress unnecessary heat transfer to the nozzle portion, the holder and the sleeve. In the illustrated example, the holder 11 is located immediately below the engagement portion between the holder 11 and the drip nozzle 20.
A shielding plate 60 is provided at the joint between the and the connecting portion and at the center of the connecting portion 12. The shielding plate 60 shields radiant heat from a heating device surrounding the dropping device, suppresses thermal expansion of the holder and the connecting portion, and also prevents deterioration of the spring member 14 due to heat.
【００１１】なお、ノズルの流路内に加圧ガスを導入す
ることにより、溶融金属の滴下速度を調節することがで
きる。すなわち、溶融金属を溶湯口４１から装入した
後、該溶湯口を閉じ、その直下のガス導入管６１を通じ
て流路内に加圧したガスを導入し、ノズル内の溶融金属
にガス圧を加えて滴下する。加圧力は溶融金属の粘度、
ノズルの孔径などにより一様ではないが、銅を滴下する
場合には、概ね、０．５〜２０kg／cm2 が適当である。
加圧ガスとしてはＨｅやＡｒなどの不活性ガス等が用い
られる。[0011] By introducing a pressurized gas into the flow path of the nozzle, the dripping speed of the molten metal can be adjusted. That is, after the molten metal is charged from the molten metal port 41, the molten metal port is closed, a pressurized gas is introduced into the flow path through the gas introduction pipe 61 immediately below the molten metal port, and gas pressure is applied to the molten metal in the nozzle. And drop it. The applied pressure is the viscosity of the molten metal,
Although it is not uniform due to the nozzle hole diameter and the like, when copper is dropped, generally 0.5 to 20 kg / cm 2 is appropriate.
As a pressurized gas, an inert gas such as He or Ar is used.
【００１２】以上のように、本発明は滴下ノズルをノズ
ル支持部によって弾性支持させ、スリーブや連結部の熱
膨張や冷却収縮をこの弾性支持部によって吸収させるこ
とにより滴下ノズルとスリーブとの接合部分におけるシ
ール漏れを確実に防止したものであり、滴下装置におけ
る他の一般的な構成部分は、例えば溶湯槽との接続部分
などは従来と同様に形成することができる。なお、連結
部１２と受け部１３との間に介設されるバネ部材１４に
はゴーベルスコットバネなどのように耐熱性に優れたも
のを用いると良い。As described above, in the present invention, the drip nozzle is elastically supported by the nozzle support portion, and the thermal expansion and cooling contraction of the sleeve and the connecting portion are absorbed by the elastic support portion. , And other general components of the drip device, for example, a portion connected to a molten metal bath can be formed in the same manner as in the prior art. The spring member 14 interposed between the connecting portion 12 and the receiving portion 13 is preferably made of a material having excellent heat resistance, such as a Gobel Scott spring.
【００１３】[0013]
【実施例】本発明の滴下装置を用い、以下の条件で、２
日間、溶融銅を滴下して銅粒を製造した。滴下は、溶湯
口から原料の銅を装入して溶湯口を閉じ、導入管を通じ
てＡｒガスを供給し流路内の雰囲気をＡｒで置換した後
に加圧し、再度加熱して行なった。溶融銅の追加装入、
雰囲気調整および再加熱を１日目に１０回繰り返して滴
下作業を終了した後、滴下装置はそのままの状態で室温
下に置き、２日目は再び原料の溶融銅を追加装入し、雰
囲気調整後、再加熱し、不活性ガスの加圧下で滴下する
作業を１日目と同様に行ない、それを１２回繰り返し
た。以上の滴下試験により、合計２０００ｇの銅粒を製
造した。２日間、２２回にわたる滴下試験の間、滴下ノ
ズルとスリーブとの間のシール漏れは発生せず、長期間
連続して滴下作業を継続できることが確認された。滴下
作業の回数、チャージ量、回収量および滴下された銅粒
の粒度を表１に纏めて示した。なお、本例のノズル孔径
は0.098 mm 、噴射圧力は４kgf/cm2 である。また表中
の括弧内の値は粒度分布の割合である。EXAMPLE A dropping device of the present invention was used under the following conditions.
Copper particles were produced by dropping molten copper for one day. The dropping was performed by charging copper as a raw material from the molten metal port, closing the molten metal port, supplying Ar gas through an introduction pipe, replacing the atmosphere in the flow path with Ar, applying pressure, and heating again. Additional charging of molten copper,
After the atmosphere adjustment and reheating were repeated 10 times on the first day to complete the dropping operation, the dropping device was left at room temperature while being kept as it was, and on the second day, the molten copper material was additionally charged and the atmosphere was adjusted. Thereafter, the operation of reheating and dropping under pressure of an inert gas was performed in the same manner as the first day, and this was repeated 12 times. Through the above drop test, a total of 2000 g of copper particles were produced. During 22 days of the drop test for 22 times, no seal leakage occurred between the drop nozzle and the sleeve, and it was confirmed that the drop operation could be continued for a long time. Table 1 summarizes the number of times of the dropping operation, the charge amount, the recovered amount, and the particle size of the dropped copper particles. The nozzle hole diameter of this example is 0.098 mm, and the injection pressure is 4 kgf / cm 2 . The values in parentheses in the table are the ratios of the particle size distribution.
【００１４】[0014]
【表１】 滴下回数 チャージ量 回収量 粒度 (g) (g) (g) >0.6 0.6-0.5 0.5-0.3 <0.3(mm) １日目 １０ 932.0 909.7 25.4g 193.2g 653.8g 37.3g (2.8%) (21.2%) (71.9%) (4.1%) ２日目 １２ 1026.8 1012.1 100.5g 350.7g 540.9g 20.0g (9.9%) (34.7%) (53.4%) (2.0%) 合 計 ２２ 1958.8 1921.8 125.9g 543.9g 1194.7g 57.3g (6.5%) (28.3%) (62.2%) (3.0%) [Table 1] Number of drops Charge amount Recovery amount Particle size (g) (g) (g)> 0.6 0.6-0.5 0.5-0.3 <0.3 (mm) Day 1 10 932.0 909.7 25.4g 193.2g 653.8g 37.3g (2.8% ) (21.2%) (71.9%) (4.1%) Day 2 12 1026.8 1012.1 100.5g 350.7g 540.9g 20.0g (9.9%) (34.7%) (53.4%) (2.0%) Total 22 1958.8 1921.8 125.9g 543.9g 1194.7g 57.3g (6.5%) (28.3%) (62.2%) (3.0%)
【００１５】[0015]
【発明の効果】以上説明したように、本発明の溶融金属
の滴下装置は、そのノズル支持部にバネ構造を採用し、
スリーブや連結部の熱膨張や冷却収縮をこの弾性支持部
によって吸収させることにより滴下ノズルとスリーブと
の接合部分におけるシール漏れを確実に防止したもので
あり、従って、本発明の滴下装置によれば、長期間の連
続滴下作業においてもシール漏れを生じることがなくが
なく、得られる金属粒の歩留りも良好である。As described above, the molten metal dropping device of the present invention employs a spring structure for its nozzle support,
By absorbing the thermal expansion and cooling contraction of the sleeve and the connecting portion by this elastic support portion, it is possible to reliably prevent the seal leakage at the joint portion between the drip nozzle and the sleeve.Therefore, according to the drip device of the present invention, Even in a long-term continuous dropping operation, there is no occurrence of seal leakage, and the yield of the obtained metal particles is good.
【図１】 本発明に係る滴下装置の概略断面図。FIG. 1 is a schematic sectional view of a dropping device according to the present invention.
【図２】 本発明の滴下装置のノズル接合付近の部分断
面。FIG. 2 is a partial cross-sectional view of the vicinity of a nozzle junction of the dropping device of the present invention.
【図３】 従来の滴下装置の概略断面図。FIG. 3 is a schematic sectional view of a conventional dropping device.
１０…ノズル支持部、１１…ホルダ、１２…連結部、１
３…受け部、１４…バネ部材、２０…滴下ノズル、３０
…スリーブ10 nozzle support, 11 holder, 12 connecting part, 1
3 ... receiving part, 14 ... spring member, 20 ... dripping nozzle, 30
…sleeve
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−9502（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22F 9/08 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-9502 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B22F 9/08
Claims (3)
して金属粒を製造する滴下装置であって、溶湯槽の滴下
口に装着されたノズル支持部、該ノズル支持部の下端に
設けられた滴下ノズルおよび該滴下ノズルと滴下口を繋
ぐスリーブを有し、ノズル支持部は滴下ノズルを吊下保
持するホルダと該ホルダを支持する連結部を有し、該連
結部はバネ部材を介して溶湯槽の受け部に連結されてお
り、上記ホルダは該連結部および連結部上端に設けたバ
ネ部材を介し溶湯槽に引き付けて弾性支持されており、
さらに該ホルダに支持された滴下ノズルの上端面は上記
スリーブの下端面に突き合わされており、上記連結部の
弾性支持力によって滴下ノズルの上端面がスリーブ下端
面に圧接されることによってこの接続面がメカニカルシ
ールされていることを特徴とする溶融金属の滴下装置。1. A dropping device for dropping molten metal from a molten metal tank into a cooling medium to produce metal particles, comprising: a nozzle support mounted on a dropping port of the molten metal tank; and a lower end of the nozzle support. A drip nozzle and a sleeve connecting the drip nozzle and the drip port, and the nozzle support has a holder for suspending and holding the drip nozzle and a connection for supporting the holder.
The connecting part is connected to the receiving part of the molten metal tank through a spring member.
The holder is provided with the connecting portion and a bar provided at the upper end of the connecting portion.
It is elastically supported by being attracted to the molten metal tank via the screw member,
Furthermore, the upper end surface of the drip nozzle supported by the holder is
Butted against the lower end of the sleeve,
The upper end surface of the drip nozzle is at the lower end of the sleeve by elastic support
A molten metal dropping device characterized in that the connection surface is mechanically sealed by being pressed against the surface .
部が該ホルダの下端内部に突出て嵌着係合しており、ホ
ルダ内部において滴下ノズルの上端面とスリーブ下端面
とが突き合わされ、上記連結部の弾性支持力によって滴
下ノズルの上端面がスリーブ下端面に圧接されているこ
とを特徴とする請求項１の滴下装置。2. An upper end of a dropping nozzle, wherein the holder has a cylindrical shape.
Portion protrudes into the lower end of the holder and is engaged.
Inside the rudder, the top surface of the drip nozzle and the bottom surface of the sleeve
Are matched with each other, and the drop is
The dropping device according to claim 1, wherein an upper end surface of the lower nozzle is pressed against a lower end surface of the sleeve .
続部分および／または連結部に設置されている請求項１
の滴下装置。3. The heat shield plate is provided at a connecting portion and / or a connecting portion between the drip nozzle and the holder.
Drip equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14706394A JP3307089B2 (en) | 1994-06-06 | 1994-06-06 | Molten metal dripping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14706394A JP3307089B2 (en) | 1994-06-06 | 1994-06-06 | Molten metal dripping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07331309A JPH07331309A (en) | 1995-12-19 |
| JP3307089B2 true JP3307089B2 (en) | 2002-07-24 |
Family
ID=15421653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14706394A Expired - Fee Related JP3307089B2 (en) | 1994-06-06 | 1994-06-06 | Molten metal dripping equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3307089B2 (en) |
-
1994
- 1994-06-06 JP JP14706394A patent/JP3307089B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07331309A (en) | 1995-12-19 |
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