JPH01150449A - Nozzle for producing rapidly cooled metal strip - Google Patents
Nozzle for producing rapidly cooled metal stripInfo
- Publication number
- JPH01150449A JPH01150449A JP30967987A JP30967987A JPH01150449A JP H01150449 A JPH01150449 A JP H01150449A JP 30967987 A JP30967987 A JP 30967987A JP 30967987 A JP30967987 A JP 30967987A JP H01150449 A JPH01150449 A JP H01150449A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- molten metal
- holding part
- zircon
- metal holding
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 64
- 239000002184 metal Substances 0.000 title claims abstract description 64
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 21
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000005350 fused silica glass Substances 0.000 claims abstract description 17
- 230000035939 shock Effects 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 27
- 230000003628 erosive effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical class N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/064—Accessories therefor for supplying molten metal
- B22D11/0642—Nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、溶融金属を移動冷却体に射出して急冷金属薄
帯を得る急冷金属薄帯製造用ノズルに関するものであり
、ノズルの組成と構造を特定した耐熱衝撃性に極めて優
れた急冷金属薄帯製造用ノズルに関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a nozzle for producing a quenched metal ribbon by injecting molten metal into a moving cooling body to obtain a quenched metal ribbon. The present invention relates to a nozzle for producing quenched metal ribbon with a specified structure and extremely excellent thermal shock resistance.
〈従来の技術〉
急冷金属薄帯製造用ノズルは、金属溶湯を冷却体表面に
供給するためのものである。急冷金属薄帯を製造する際
の金属溶湯のノズルからの供給量は、一般の鋳造工程に
用いられるノズルなどに比べて少なくすることが必要で
ある。したがってノズルの溶湯射出口は小さ（なるが、
さらに射出口の表面粗さや寸法は厳密に管理されなけれ
ばならない、このため、ノズル材としては、例えば窒化
物、酸化物、硼化物などのなかでもとくに粒子の細かい
もので、耐熱衝撃性に優れ、かつ機械加工性に優れた材
料が要求される。しかし、−船釣にこれらの材料は、価
格が高く経済性の面で不利であり、また要求特性を十分
に満たしていない場合が多い。<Prior Art> A nozzle for producing rapidly cooled metal ribbon is for supplying molten metal to the surface of a cooling body. When manufacturing a quenched metal ribbon, the amount of molten metal supplied from a nozzle needs to be smaller than that of a nozzle used in a general casting process. Therefore, the molten metal injection port of the nozzle is small (but
Furthermore, the surface roughness and dimensions of the injection port must be strictly controlled. For this reason, the nozzle material should be a material with particularly fine particles, such as nitrides, oxides, and borides, which have excellent thermal shock resistance. , and materials with excellent machinability are required. However, for boat fishing, these materials are expensive and economically disadvantageous, and often do not fully satisfy the required properties.
このために、実開昭５９−７３０６０号公報には円筒型
ルツボ部に円錐台形の射出口部を脱着自在に装着した構
造になるノズルが提案された。しかしながら上記ノズル
では、射出口部とルツボ部の材質の違いからくる熱膨張
差について考慮されていないため、両者の熱膨張差に起
因した熱応力をうまく吸収できず、射出口部やスラスト
リングなどに割れを生じるおそれが大きいという問題点
がある。For this reason, Japanese Utility Model Application Publication No. 59-73060 proposed a nozzle having a structure in which a truncated conical injection port is detachably attached to a cylindrical crucible. However, the above nozzle does not take into account the difference in thermal expansion caused by the difference in the materials of the injection port and the crucible, so it cannot absorb the thermal stress caused by the difference in thermal expansion between the two, and the injection port and thrust ring There is a problem that there is a large risk of cracking.
また、特開昭６１−９９５４８号公報、特開昭５６−１
４０５８号公報および特開昭５６−８９３６１号公報に
はＡ／ＮやＢＮなどの窒化物をノズルの材質として用い
ることが提案されている。しかし、この提案はいずれも
ノズルスリット部のみを対象としているものである。Also, JP-A-61-99548, JP-A-56-1
No. 4058 and Japanese Unexamined Patent Publication No. 56-89361 propose the use of nitrides such as A/N and BN as materials for the nozzle. However, all of these proposals target only the nozzle slit portion.
特開昭５６−８９３６１号公報には、溶湯保持部の材質
は一般に金属溶解用るつぼ材質として多用されているア
ルミナ系、マグネシア系、ジルコニア系などが、さらに
特開昭５６−１４０５８号公報には、−ｉに石英ガラス
質を用いるが高温でクリストバライト化するので５０％
以上の窒素を含む窒化ケイ素質が良いとされている。JP-A No. 56-89361 discloses that the material of the molten metal holding part is alumina, magnesia, zirconia, etc., which are commonly used as crucible materials for metal melting, and JP-A No. 56-14058 discloses , quartz glass is used for -i, but it turns into cristobalite at high temperatures, so 50%
Silicon nitride containing the above nitrogen content is said to be good.
しかし、本発明者らの研究によれば、実験室的規模の数
グラム−数百グラムと溶湯量が少ない場合には、直接ノ
ズルの溶湯保持部内で溶解できるのでこれらの材質も適
切ではあるが、工場生産規模では溶湯全量をノズル内で
満たすことができないために、別の容器内からノズルに
溶湯を受けることになり、その時に受ける熱によってノ
ズル内で温度勾配が大きくなり、これが原因でノズル割
れが発生する。However, according to the research conducted by the present inventors, these materials are suitable when the amount of molten metal is small (several grams to several hundred grams) on a laboratory scale because it can be melted directly within the molten metal holding part of the nozzle. On a factory production scale, the entire amount of molten metal cannot be filled into the nozzle, so the nozzle receives the molten metal from another container, and the heat received at that time creates a large temperature gradient within the nozzle, which causes the nozzle to overflow. Cracks occur.
また、工場生産規模のノズルにファインセラミックスを
用いる場合には、ノズルが極めて高価なものとなり製品
コストが高く、実用的ではない。Furthermore, when fine ceramics are used in a nozzle produced on a factory scale, the nozzle becomes extremely expensive, resulting in high product cost and is not practical.
〈発明が解決しようとする問題点〉
本発明は、前述のような問題点を解決−し、耐熱衝撃性
、耐侵食性に優れた象、冷金属薄帯製造用ノズルを提供
するためになされたものである。<Problems to be Solved by the Invention> The present invention has been made in order to solve the above-mentioned problems and provide a nozzle for producing a cold metal ribbon with excellent thermal shock resistance and corrosion resistance. It is something that
〈問題点を解決するための手段〉
本発明者らは、安価で耐熱衝撃性、耐侵食性に優れた急
冷薄帯金属製造用ノズルの製造について鋭意研究を重ね
た結果、ノズルの溶湯保持部と射出口部とを分割し、そ
れぞれに要求される材料特性をもった材料を選定するこ
とによって目的を達成できるとの知見をえ、その知見に
基づいて本発明をなすに至った。<Means for Solving the Problems> As a result of extensive research into manufacturing a nozzle for producing quenched ribbon metal that is inexpensive and has excellent thermal shock resistance and corrosion resistance, the present inventors have developed a molten metal holding portion of the nozzle. We have found that the objective can be achieved by dividing the injection port and the injection port and selecting materials with the required material characteristics for each, and based on this knowledge, we have developed the present invention.
本発明は、溶湯保持部の先端に射出口部を着脱自在に装
着して一体化した構造の急冷金属薄帯製造用ノズルであ
って、前記溶湯保持部がジルコン：２０〜９５重景％、
溶融シリカ：５〜８０重量％の組成の複合セラミックス
であることを特徴とする耐熱衝撃性に優れた急冷金属薄
帯製造用ノズルである。The present invention provides a nozzle for producing rapidly cooled metal ribbon having an integrated structure in which an injection port is detachably attached to the tip of a molten metal holding part, wherein the molten metal holding part contains zircon: 20 to 95%,
This is a nozzle for producing rapidly cooled metal ribbon with excellent thermal shock resistance, which is characterized by being a composite ceramic having a composition of fused silica: 5 to 80% by weight.
〈作 用〉
急冷金属薄帯製造用ノズルは、溶鋼を射出するに必要な
量の溶湯を保持しつつ、たとえば単ロール法では０．５
〜２ｍｍ幅のスリット状である射出口を有する射出口部
を具える必要がある。この場合溶湯保持部の材料には、
耐熱衝撃性と同時に耐侵食性、成型性、加工性も要求さ
れる。一方、射出口部には、上記材料特性の他に緻密加
工性、溶湯との濡れ性などが要求される。これらの材料
特性のすべてを１種類の耐火物材料で満たすことはでき
ない。<Function> The nozzle for producing quenched metal ribbon can hold the amount of molten metal necessary for injecting the molten steel, while at the same time retaining the amount of molten metal necessary for injecting the molten steel.
It is necessary to provide an injection port portion having a slit-shaped injection port with a width of ~2 mm. In this case, the material of the molten metal holding part is
In addition to thermal shock resistance, corrosion resistance, moldability, and workability are also required. On the other hand, in addition to the above-mentioned material properties, the injection port is required to have dense workability, wettability with molten metal, and the like. All of these material properties cannot be met with one type of refractory material.
本発明はこの点に着目し、溶湯保持部と射出口部とを分
割することにより、それぞれの要求特性を満たす耐火物
材料を選定することで前記問題点を解決したものである
。The present invention focuses on this point and solves the above problem by dividing the molten metal holding section and the injection port section, and selecting refractory materials that satisfy the required characteristics of each section.
また、従来の急冷薄帯金属製造用ノズルは、すべてノズ
ル射出口における要求特性を追求したものであり、溶湯
保持部にはほとんど着目されていなかった。In addition, all conventional nozzles for producing quenched ribbon metal pursue required characteristics at the nozzle injection port, and little attention has been paid to the molten metal holding section.
本発明では、溶湯保持部にジルコン：２０〜９５重量％
（以下％と略す）、溶融シリカ：５〜８０％の組合せで
ある複合セラミックスを用い、耐侵食性。In the present invention, zircon: 20 to 95% by weight in the molten metal holding part
(hereinafter abbreviated as %), fused silica: Uses a composite ceramic that is a combination of 5 to 80%, and has corrosion resistance.
耐熱衝撃性に極めて優れたノズルを提供するものである
。なお溶湯保持部の組成は、Ｚｒ０ｚ＋ Ｓｔｏｗに換
算５すると実質的にはＺｒ０ｚ ： １３〜６４％＋
Ｓｔｏｗ ： ３６〜８７％となる。The present invention provides a nozzle with extremely excellent thermal shock resistance. Note that the composition of the molten metal holding part is substantially Zr0z: 13 to 64% + when converted to Zr0z + Stow 5
Stow: 36-87%.
ジルコンの含有量を２０〜９５％と限定した理由はつぎ
のとおりである。The reason why the content of zircon was limited to 20 to 95% is as follows.
ジルコンは、２０％未満では、溶鋼によって高温にさら
された溶融シリカがクリストバライト化し、この部分に
欠落が生じたり、侵食によって凹凸が激しくなり出湯後
の再利用ができない。ジルコンが２０％以上になると、
溶融シリカとの結合性が強化されて耐食性が極めて改善
されるばかりでな（、熱間強度も著しく向上する。した
がってジルコンの下限範囲は２０％と限定する。If the zircon content is less than 20%, molten silica exposed to high temperatures by molten steel will turn into cristobalite, and this portion will become chipped or become severely uneven due to erosion, making it impossible to reuse it after tapping. When zircon becomes 20% or more,
Not only is the bondability with fused silica strengthened, corrosion resistance is significantly improved (hot strength is also significantly improved).Therefore, the lower limit range of zircon is limited to 20%.
一方、ジルコンが９５％を超えると耐熱衝撃性が著しく
低下するために、ノズルの予熱時や溶湯が注がれた時の
熱応力に耐えることができない、これを防止するために
、ノズルを予熱する際に、ノズル内に温度勾配が生じな
いように予熱時の昇温速度を極めて遅くすることが必要
となり、かつ高い溶鋼温度付近まで予熱しなければなら
ず、生産性が著しく阻害される。On the other hand, if the zircon content exceeds 95%, the thermal shock resistance decreases significantly, making it impossible to withstand the thermal stress when preheating the nozzle or when molten metal is poured.To prevent this, the nozzle must be preheated. When doing so, it is necessary to make the temperature increase rate during preheating extremely slow so that a temperature gradient does not occur within the nozzle, and the molten steel must be preheated to a temperature close to a high temperature, which significantly impedes productivity.
したがってジルコンの上限範囲は９５％までと限定する
。Therefore, the upper limit range of zircon is limited to 95%.
ジルコンと溶融シリカとの比率（％）と、溶鋼侵食比（
％）、ノズル割れ発生臨界温度差（ΔＴ℃）との関係を
第２図に示した。The ratio of zircon to fused silica (%) and the molten steel erosion ratio (
%) and the critical temperature difference for nozzle cracking (ΔT°C) is shown in Figure 2.
溶鋼侵食比は、ノズル内壁面に１４００°ＣのＦｅ−Ｂ
−５ｔ系溶湯が１０分間接触したときに、任意の２０角
の内壁面について接触前の内壁面と比べて内壁面が侵食
され減少された面積比（％）で示した。The molten steel erosion ratio is Fe-B at 1400°C on the nozzle inner wall surface.
When the -5t molten metal was in contact for 10 minutes, the area ratio (%) of the inner wall surface eroded and decreased compared to the inner wall surface before contact with respect to an arbitrary 20 square inner wall surface is shown.
ノズル割れ発生臨界温度差は、１４００℃の溶鋼をノズ
ルに注入しノズルに割れが発生した温度差（％）である
。The critical temperature difference for nozzle crack occurrence is the temperature difference (%) at which cracks occur in the nozzle when 1400° C. molten steel is injected into the nozzle.
第２図から明らかなように本発明範囲のジルコン＝２０
〜９５％Ｉ溶融シリカ：５〜８０％の範囲では、ジルコ
ン２０％未満に比べて耐侵食性、耐熱衝撃性が飛躍的に
向上する。ジルコツ９５％以上テモ溶ＦＡ侵食比は本発
明材料と大差はないが、割れ発生臨界温度差が急激に低
下し、実用性はない。As is clear from Fig. 2, zircon within the scope of the present invention = 20
~95% I fused silica: In the range of 5 to 80%, erosion resistance and thermal shock resistance are dramatically improved compared to less than 20% zircon. Although the TemoSolution FA erosion ratio of Zirkotsu 95% or more is not much different from that of the material of the present invention, the critical temperature difference for cracking is rapidly reduced, making it impractical.
本発明に係る材料と従来材料を使用したノズルを予備加
熱し、このノズルに溶湯を１０分間供給し、その後冷却
した過程におけるノズル割れ発生状況を第１表に示した
。Table 1 shows the occurrence of nozzle cracks in the process of preheating the nozzles using the material according to the present invention and the conventional material, supplying molten metal to the nozzles for 10 minutes, and then cooling them.
従来材料としてはジルコン単独、溶融シリカ単独、アル
ミナ・シリカ系２窒化珪素・炭化珪素系の４種類を用い
た。Four types of conventional materials were used: zircon alone, fused silica alone, and alumina/silica dinitride/silicon carbide.
従来材料ノズルは予備加熱、溶湯供給、冷却の過程中に
割れが発生している。Conventional material nozzles tend to crack during the preheating, molten metal supply, and cooling processes.
熔融シリカ単独ノズルは溶湯供給後の冷却過程で脆くな
って、無数の割れが発生した。The fused silica-only nozzle became brittle during the cooling process after supplying the molten metal, and numerous cracks occurred.
本発明では、ジルコン中に粒状あるいは不定型の溶融シ
リカを混在させたいわゆる複合セラミックス材料を溶湯
保持部の材料とすることによって、溶融シリカに骨材の
役割を担わせると共に、１０００℃前後においてジルコ
ンの変態熱膨張によってノズル内に発生する熱応力を吸
収する役割を持たせて耐熱衝撃性に優れたノズルを提供
できた。In the present invention, by using a so-called composite ceramic material in which granular or amorphous fused silica is mixed in zircon as the material for the molten metal holding part, the fused silica plays the role of aggregate, and the zircon We were able to provide a nozzle with excellent thermal shock resistance by having the role of absorbing the thermal stress generated within the nozzle due to the transformation thermal expansion.
したがって、溶湯保持部と組み合わせて用いる射出口部
の材質は、窒化はう素系、窒化珪素系等の窒化物の他に
、従来から知られているチタン酸化物系、アルミナ系等
の酸化物であっても何ら差し支えない、これらの材料の
中でもとくに、窒化珪素と窒化はう素の焼結材は耐熱衝
撃性、加工性。Therefore, the material of the injection port part used in combination with the molten metal holding part is not only nitrides such as boron nitride and silicon nitride, but also conventional oxides such as titanium oxide and alumina. Among these materials, sintered materials of silicon nitride and boron nitride have excellent thermal shock resistance and workability.
溶湯との濡れ性等に優れ射出口部の材料として有効であ
る。It has excellent wettability with molten metal and is effective as a material for injection ports.
〈実施例〉
（実施例１）
ジルコン：２０％、溶融シリカ：８０％の組成の複合セ
ラミックスを溶湯保持部とし、射出口を有する５ｉｓＨ
ａ・ＢＮからなる射出口部を、これに耐熱接着剤で接合
した第１図に示すようなノズル（１，、−＝２５０ ａ
ｍ、 Ｌｚ＝ １．０ｍｍ）を用いて１０００°Ｃに予
熱後、１４００°Ｃの金属溶湯３００ ｋｇを１０分間
注湯し単ロール法で非晶質金属薄帯を作成した。<Example> (Example 1) 5isH with a molten metal holding part made of composite ceramics with a composition of 20% zircon and 80% fused silica and an injection port.
A nozzle (1,, -=250 a
After preheating to 1000°C using a molten metal (Lz = 1.0 mm), 300 kg of molten metal at 1400°C was poured for 10 minutes to create an amorphous metal ribbon using a single roll method.
本実施例では、ノズルは溶湯保持部、射出口部ともに全
く割れなかった。In this example, the nozzle did not crack at all in either the molten metal holding part or the injection port part.
（実施例２）
ジルコン：９０％、溶融シリカ：１０％の組成の複合セ
ラミックスを溶湯保持部とし、射出口を有する５ｉＪａ
・ＢＮからなる射出口部をこれに嵌合した第１図に示す
ようなノズル（Ｌ＋ ＝ ２５０ｍｍ、 Ｌｚ＝ １．
０ｍｍ）を用いて、１０００’Ｃに予熱後、１４００°
Ｃの金属溶湯３００ ｋｇを１０分間注湯し、単ロール
法で非晶質金属を作成した。(Example 2) 5iJa with a molten metal holding part made of composite ceramics with a composition of 90% zircon and 10% fused silica and an injection port.
- A nozzle as shown in Fig. 1 in which an injection port made of BN is fitted (L+ = 250 mm, Lz = 1.
0mm) and preheated to 1000'C, then heated to 1400°
An amorphous metal was produced by pouring 300 kg of molten metal C for 10 minutes using a single roll method.
本実施例では、ノズルは溶湯保持部、射出口部ともに全
く割れなかった。In this example, the nozzle did not crack at all in either the molten metal holding part or the injection port part.
〈発明の効果〉
本発明に係る急、冷金属薄帯製造用ノズルは、前述のと
おり耐熱衝撃性、耐侵食性に極めて優れているので、工
業的規模での溶湯射出時に溶湯保持部、射出口部いずれ
にも割れが発生せず、溶湯射出作業が円滑にでき、さら
に材料が従来品よりも安価で経済性の面でも多大の利益
が得られる。<Effects of the Invention> As mentioned above, the nozzle for producing cold metal ribbon according to the present invention has extremely excellent thermal shock resistance and corrosion resistance, so it does not need to be used in the molten metal holding part or injected area when injecting molten metal on an industrial scale. No cracks occur at any of the outlet sections, allowing for smooth molten metal injection work, and the material is cheaper than conventional products, providing great economic benefits.
第１図は、本発明に係る急冷金属薄帯製造用ノズルの実
施例の模式図、第２図は、ジルコンと溶融シリカの比率
（％）と、溶鋼侵食比（％）、ノズル割れ発生臨界温度
差（°Ｃ）との関係を示すグラフである。
１・・・ノズル、 ２・・・溶湯保持部、
３・・・射出口部、 ４・・・射出口、５・
・・耐熱性接着剤。
特許出願人 川崎製鉄株式会社
第１図
射出口
第２図
溶融シリカ比率（％）
シルコニ／比率（％）Fig. 1 is a schematic diagram of an embodiment of the nozzle for producing rapidly cooled metal ribbon according to the present invention, and Fig. 2 shows the ratio (%) of zircon and fused silica, the molten steel erosion ratio (%), and the nozzle crack occurrence criticality. It is a graph showing the relationship with temperature difference (°C). 1... Nozzle, 2... Molten metal holding part,
3... Injection port part, 4... Injection port, 5.
...Heat-resistant adhesive. Patent applicant Kawasaki Steel Corporation Figure 1 Injection port Figure 2 Fused silica ratio (%) Silcony/ratio (%)
Claims (1)
化した構造の急冷金属薄帯製造用ノズルであって、前記
溶湯保持部がジルコン：２０〜９５重量％、溶融シリカ
：５〜８０重量％の組成の複合セラミックスであること
を特徴とする耐熱衝撃性に優れた急冷金属薄帯製造用ノ
ズル。A nozzle for producing rapidly cooled metal ribbon having a structure in which an injection port is removably attached to the tip of a molten metal holding part, and the molten metal holding part contains 20 to 95% by weight of zircon and 5 to 95% of fused silica. A nozzle for producing rapidly cooled metal ribbon with excellent thermal shock resistance, characterized by being made of composite ceramics with a composition of 80% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30967987A JPH01150449A (en) | 1987-12-09 | 1987-12-09 | Nozzle for producing rapidly cooled metal strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30967987A JPH01150449A (en) | 1987-12-09 | 1987-12-09 | Nozzle for producing rapidly cooled metal strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01150449A true JPH01150449A (en) | 1989-06-13 |
Family
ID=17995971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30967987A Pending JPH01150449A (en) | 1987-12-09 | 1987-12-09 | Nozzle for producing rapidly cooled metal strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01150449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676946A1 (en) * | 1991-05-27 | 1992-12-04 | Michelin & Cie | METHOD AND DEVICE FOR OBTAINING IRON - BASED AMORPHOUS METAL ALLOY WIRE. |
| RU2484919C1 (en) * | 2011-11-10 | 2013-06-20 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Nozzle for production of amorphous strip |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190869A (en) * | 1982-04-30 | 1983-11-07 | 住友金属工業株式会社 | Molten silica refractories |
| JPS5934468A (en) * | 1982-08-23 | 1984-02-24 | Toyota Motor Corp | Exhaust gas purifier for internal combustion engine |
-
1987
- 1987-12-09 JP JP30967987A patent/JPH01150449A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190869A (en) * | 1982-04-30 | 1983-11-07 | 住友金属工業株式会社 | Molten silica refractories |
| JPS5934468A (en) * | 1982-08-23 | 1984-02-24 | Toyota Motor Corp | Exhaust gas purifier for internal combustion engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676946A1 (en) * | 1991-05-27 | 1992-12-04 | Michelin & Cie | METHOD AND DEVICE FOR OBTAINING IRON - BASED AMORPHOUS METAL ALLOY WIRE. |
| US5477910A (en) * | 1991-05-27 | 1995-12-26 | Compagnie Generale Des Etablissements Michelin - Michelin & Cie | Process and device for obtaining a wire made of amorphous metal alloy having an iron base |
| RU2484919C1 (en) * | 2011-11-10 | 2013-06-20 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Nozzle for production of amorphous strip |
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