JPH0422659B2 - - Google Patents
Info
- Publication number
- JPH0422659B2 JPH0422659B2 JP19453787A JP19453787A JPH0422659B2 JP H0422659 B2 JPH0422659 B2 JP H0422659B2 JP 19453787 A JP19453787 A JP 19453787A JP 19453787 A JP19453787 A JP 19453787A JP H0422659 B2 JPH0422659 B2 JP H0422659B2
- Authority
- JP
- Japan
- Prior art keywords
- side dam
- twin
- rolls
- roll
- ribbon manufacturing
- 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
- 238000005266 casting Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 description 13
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 238000011161 development Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- -1 Si 3 N 4 Substances 0.000 description 1
- 229910018619 Si-Fe Inorganic materials 0.000 description 1
- 229910008289 Si—Fe Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
Description
〔産業上の利用分野〕
本発明は、双ロール式急冷薄帯の製造装置に関
し、円筒面を対向配置した２個のロールと該ロー
ルの端面に当接するサイドダムとで鋳造空間を形
成し、２個のロール間の間隙より薄帯を鋳造する
双ロール式急冷薄帯の製造装置の改良に関する。
〔従来の技術〕
円筒面を細隙を介して対向配置した２個のロー
ルと、それらのロールの両端面に当接する２枚の
サイドダムとで鋳造空間を形成し、２個のロール
を回転させながらその間の間隙に溶融金属を供給
して薄帯を鋳造する双ロール式急冷薄帯の製造装
置が知られている。そのサイドダムは、従来の長
方形鋳型による連続鋳造の短辺と異なり、ロール
キス部のサイドダム面上に三角形の凝固シエルが
発達すると、そのシエルがロールに噛み込むこと
により、圧下異常、鋳込中止が発生していた。
このため通常このサイドダムはBN、Si3N4な
どの熱伝導率の低いセラミツクスを使用してい
た。
また、特開昭60−148646に見られるようにこの
端辺を予熱し、サイドダムからの抜熱を低減させ
ることのみに力点が置かれていた。しかしこのサ
イドダム面に完全に凝固シエルの発達を防止する
ほどの予熱を行うと、サイドダムロール端面との
接触などから技術的に無理（特開昭60−162558）
であつた。
最近の実験において、予熱なしのBN、Cu、グ
ラフアイトなどにおいてシエルの発達が低減でき
ることが判明し、サイドダム材料として、熱伝導
率が重要なフアクタでなく、むしろ濡れ性が重要
であり、抜熱して凝固核が出来てもこれが付着し
にくい材料をサイドダムに用いる方が良いという
結論になつた。
上記BN、グラフアイトは従来から文献等に引
用されていたが、耐摩耗性に劣り実用上は問題が
あつた。
〔発明が解決しようとする問題点〕
従来技術において、通常用いられてきたセラミ
ツクスサイドダムは、抜熱を低減させ鋳造金属の
凝固シエルの発達を防止することを主眼としてい
た。これは熱伝導率の低いものがサイドダム材料
の最重要フアクタであるという観点に立つてい
る。しかし実際には、凝固シエルの発達防止は完
全でなく、連続鋳込がしばしば中断された。
本発明においては、上記観点とは異なつた新し
い観点からサイドダム表面の溶融金属の濡れ性に
着目してサイドダムを選定し、端辺に凝固シエル
が付着し、これが発達してついに脱落するに至
り、異常圧下やブレークアウトを引き起こす問題
を解決するものである。
すなわち、本発明は円筒面を対向配置した２個
のロールと該ロールの端面に当接するサイドダム
とで鋳造空間を形成してなる双ロール式急冷薄帯
の製造装置において、凝固シエルの発達を防止
し、一方摩耗によつて生ずる湯ざしを発生しな
い、耐摩耗性のある材料によつてサイドダムを構
成した装置を提供するものである。
〔問題点を解決するための手段〕
本発明の第１発明は双ロール式急冷薄帯の製造
装置において、前記サイドダムは内部水冷室を備
えると共に、鋳造空間を形成する面に銅合金板を
配設したことを特徴とする。
さらに本願の第２発明は、サイドダム内部水冷
室を備えると共に、鋳造空間を形成する面に、ク
ロムメツキもしくはニツケルの下地にクロムメツ
キを施した銅板を配設したことを特徴とする。
本願の第３の発明は、上記第２の発明のクロム
メツキもしくはニツケルの下地にクロムメツキを
施した銅板に代えてアルミナを分散した銅板を配
設したことを特徴とする。
上記第１、第２の発明の前記サイドダムに振動
を与える加振装置を付設することが好ましい。
〔作用〕
本発明者らの研究によれば、次のことが明らか
となつた。
(1) 種々のサイドダム材料についてシエルの発達
の様子、湯流れの様子等を、第３図に示すよう
な溶湯の斜め注湯による溶湯暴露試験によつて
観察したところ、BN、グラフアイト、Cuにお
いては凝固シエルが発達せず、逆に溶融シリ
カ、Si3N4、鋼などでシエルの発達が見られ
た。
(2) また、同様のサイドダム材を用いて第２図に
示すような双ロール式急冷薄帯製造装置により
薄帯製造実験をした結果、上記曝露試験と同様
な結果を得た。
上記２つの実験結果を第１表にまとめて示し
た。条件としてサイドダムの材質、熱伝導率、予
熱条件を挙げ、結果として耐摩耗性、シエルの発
達防止の良否、鋳込時間を示した。
[Industrial Application Field] The present invention relates to a twin-roll quenched ribbon manufacturing apparatus, in which a casting space is formed by two rolls with cylindrical surfaces facing each other and a side dam that abuts the end faces of the rolls. This invention relates to an improvement in a twin-roll quenched ribbon manufacturing device that casts a ribbon from the gap between two rolls. [Prior art] A casting space is formed by two rolls whose cylindrical surfaces are placed opposite each other with a gap in between, and two side dams that abut on both end faces of these rolls, and the two rolls are rotated. However, a twin-roll quenched ribbon manufacturing apparatus is known, which casts a ribbon by supplying molten metal into the gap between the two rolls. The side dam is different from the short side of continuous casting using a conventional rectangular mold. When a triangular solidified shell develops on the side dam surface of the roll kissing part, the shell gets caught in the roll, causing abnormal rolling and casting stoppage. Was. For this reason, this side dam usually uses ceramics with low thermal conductivity, such as BN or Si 3 N 4 . Further, as seen in JP-A-60-148646, emphasis was placed solely on preheating this edge and reducing heat extraction from the side dam. However, it is technically impossible to preheat the side dam surface to a degree that completely prevents the development of a solidified shell due to contact with the end surface of the side dam roll (Japanese Patent Laid-Open No. 60-162558).
It was hot. Recent experiments have revealed that shell development can be reduced in BN, Cu, graphite, etc. without preheating, and as side dam materials, thermal conductivity is not an important factor, but rather wettability is an important factor, and heat removal is important. It was concluded that it would be better to use a material for the side dam that would be less likely to cause solidification nuclei to adhere. The above-mentioned BN and graphite have been cited in literature, etc., but they have poor wear resistance and are problematic in practice. [Problems to be Solved by the Invention] Ceramic side dams commonly used in the prior art were aimed at reducing heat loss and preventing the development of solidified shells in cast metals. This is based on the viewpoint that low thermal conductivity is the most important factor for side dam materials. However, in reality, the prevention of solidification shell development was not complete, and continuous casting was often interrupted. In the present invention, a side dam is selected from a new viewpoint different from the above viewpoint, focusing on the wettability of molten metal on the surface of the side dam, and a solidified shell is attached to the edge, which develops and finally falls off. This solves the problem of abnormal pressure reduction and breakouts. That is, the present invention prevents the development of solidified shells in a twin-roll quenched ribbon manufacturing apparatus in which a casting space is formed by two rolls with cylindrical surfaces facing each other and a side dam that abuts the end surfaces of the rolls. On the other hand, the present invention provides a device in which the side dam is made of a wear-resistant material that does not generate hot spots caused by wear. [Means for Solving the Problems] A first aspect of the present invention is a twin-roll type quenched ribbon manufacturing apparatus, in which the side dam is provided with an internal water cooling chamber, and a copper alloy plate is disposed on a surface forming a casting space. It is characterized by having been established. Furthermore, the second invention of the present application is characterized in that a water cooling chamber is provided inside the side dam, and a copper plate with chrome plating or chrome plating on a nickel base is disposed on the surface forming the casting space. A third invention of the present application is characterized in that a copper plate in which alumina is dispersed is provided in place of the chrome-plated copper plate or chrome-plated copper plate on a nickel base of the second invention. It is preferable that a vibration device for applying vibration to the side dam of the first and second inventions is attached. [Effect] According to the research conducted by the present inventors, the following has become clear. (1) When we observed the shell development, melt flow, etc. of various side dam materials through a molten metal exposure test using oblique pouring of molten metal as shown in Figure 3, we found that BN, graphite, Cu A solidified shell did not develop in the case of molten silica, Si 3 N 4 , steel, etc. (2) In addition, a ribbon manufacturing experiment was conducted using the same side dam material using a twin-roll quenched ribbon manufacturing apparatus as shown in FIG. 2, and results similar to those of the exposure test described above were obtained. The results of the above two experiments are summarized in Table 1. The conditions include the material of the side dam, thermal conductivity, and preheating conditions, and the results include wear resistance, effectiveness in preventing shell development, and casting time.
次のような本発明の実施例および比較例の双ロ
ール薄帯製造装置を用いて、下記製造条件で、薄
帯の鋳込を行つた。
製造装置
ロール径：φ550mm
ロール材質：Cu合金スリーブ内部水冷
サイドダム材：第２表の通り
製造条件
鋳込材質：4.5重量％Si−Fe
鋳込温度：1550℃
鋳込速度：５ｍ／sec
第２表に鋳込結果を示した。実施例１装置で
は、薄帯寸法0.35mm厚×500mm幅のものを連続２
ソン完鋳することができた。一方、BNをサイド
ダムに用いた比較例１の装置では、BNの摩耗に
より湯ざし、湯もれが発生し、約1.6トンで鋳込
中断した。
実施例２の装置では薄帯厚0.3mm×幅500mmの薄
帯を連続2.5トンを完鋳した。
比較例２の装置ではシエル発達により圧力異常
となり約250Kgで鋳込を中断せざるを得なかつた。
実施例３の加振装置を備えた装置で加振を行な
つた場合、0.35mm厚×500mm幅の薄帯を連続3.0ト
ン完鋳し、湯ざし、湯もれ、サイドダム表面の損
傷が非常に小さかつた。
実施例４〜実施例７ではそれぞれ内部水冷
Al2O3分散銅、内部水冷Be−Cu、内部水冷Cr−
Cu、内部水冷Ag−Cuをサイドダム材に用いた装
置で、0.35mm厚×500mm幅の薄帯を連続2.0〜2.8ト
ン完鋳した。
Using the following twin-roll ribbon manufacturing apparatuses of Examples and Comparative Examples of the present invention, ribbons were cast under the following manufacturing conditions. Manufacturing equipment Roll diameter: φ550mm Roll material: Cu alloy sleeve internal water cooling Side dam material: Manufacturing conditions as shown in Table 2 Casting material: 4.5% by weight Si-Fe Casting temperature: 1550℃ Casting speed: 5m/sec Table 2 The casting results are shown. In the device of Example 1, two ribbons with dimensions of 0.35 mm thickness x 500 mm width were
I was able to complete the casting process. On the other hand, in the apparatus of Comparative Example 1 in which BN was used for the side dam, molten metal leaked due to abrasion of the BN, and casting was interrupted at about 1.6 tons. The apparatus of Example 2 continuously cast 2.5 tons of ribbon with a thickness of 0.3 mm and a width of 500 mm. In the apparatus of Comparative Example 2, pressure abnormality occurred due to shell development, and casting had to be interrupted at approximately 250 kg. When vibration was carried out using a device equipped with the vibration device of Example 3, 3.0 tons of thin strips with a thickness of 0.35 mm and a width of 500 mm were continuously cast, and there was no damage to the molten metal, leakage, or side dam surface. It was small. In Examples 4 to 7, internal water cooling was used.
Al2O3 dispersed copper, internally water-cooled Be−Cu, internally water-cooled Cr−
Using a device that used Cu and internally water-cooled Ag-Cu as the side dam material, 2.0 to 2.8 tons of continuous thin strips with a thickness of 0.35 mm and a width of 500 mm were completely cast.
【表】【table】
本発明のサイドダムを使用した装置によれば、
金属薄帯の長時間鋳込、板厚偏差防止、表面性状
向上を図ることができ、双ロール連鋳機の実用化
の前進に卓効を奏する。
According to the device using the side dam of the present invention,
It enables long-time casting of metal ribbon, prevents sheet thickness deviation, and improves surface quality, and is extremely effective in advancing the practical application of twin-roll continuous casting machines.
第１図は双ロール式急冷薄帯製造装置のサイド
ダム近傍の側面図、第２図ａは双ロール式急冷薄
帯製造装置の模式的平面図、第２図ｂ、ｃはそれ
ぞれのＢ−Ｂ矢視図で凝固シエルの成長と脱落状
況を示す説明図、第３図は溶湯曝露試験の説明
図、第４図は各種サイドダム材質の鋳込時間比較
図である。
１……注湯ノズル、２……溶湯流、３，３ａ…
…冷却ロール、４……溶湯パドル、５……サイド
ダムに発達した大きなシエル、６，６ａ……サイ
ドダム、７……サイドダムから脱落する小さなシ
エル、９……溶湯ノズル、１０……溶湯流、１１
……パドル、１２……サイドダム試験材、２１…
…水冷管、２２……加振装置、２３……押付けシ
リンダ。
Figure 1 is a side view of the twin-roll type quenched ribbon manufacturing apparatus near the side dam, Figure 2a is a schematic plan view of the twin-roll type quenched ribbon manufacturing apparatus, and Figures 2b and c are each B-B. FIG. 3 is an explanatory diagram showing the growth and falling off of the solidified shell in an arrow view, FIG. 3 is an explanatory diagram of a molten metal exposure test, and FIG. 4 is a diagram comparing casting times of various side dam materials. 1... Pouring nozzle, 2... Molten metal flow, 3, 3a...
...Cooling roll, 4... Molten metal paddle, 5... Large shell developed into side dam, 6, 6a... Side dam, 7... Small shell falling off from side dam, 9... Molten metal nozzle, 10... Molten metal flow, 11
...Paddle, 12...Side dam test material, 21...
...Water-cooled pipe, 22... Vibration device, 23... Pressing cylinder.
Claims (1)
ルの端面に当接するサイドダムとで鋳造空間を形
成してなる双ロール式急冷薄帯の製造装置におい
て、前記サイドダムは内部水冷室を備えると共
に、鋳造空間を形成する面に銅合金板を配設した
ことを特徴とする双ロール式急冷薄帯の製造装
置。 ２ 円筒面を対向配置した２個のロールと該ロー
ルの端面に当接するサイドダムとで鋳造空間を形
成してなる双ロール式急冷薄帯の製造装置におい
て、前記サイドダムは内部水冷室を備えると共
に、鋳造空間を形成する面に、クロムメツキもし
くはニツケルの下地にクロムメツキを施した銅板
を配設したことを特徴とする双ロール式急冷薄帯
の製造装置。 ３ 円筒面を対向配置した２個のロールと該ロー
ルの端面に当接するサイドダムとで鋳造空間を形
成してなる双ロール式急冷薄帯の製造装置におい
て、前記サイドダムは内部水冷室を備えると共
に、鋳造空間を形成する面に、アルミナを分散し
た銅板を配設したことを特徴とする双ロール式急
冷薄帯の製造装置。 ４ 前記サイドダムに振動を与える加振装置を付
設したことを特徴とする特許請求の範囲第１項、
第２項又は第３項に記載の双ロール式急冷薄帯の
製造装置。[Scope of Claims] 1. A twin-roll quenched ribbon manufacturing apparatus in which a casting space is formed by two rolls with cylindrical surfaces facing each other and a side dam abutting the end surfaces of the rolls, wherein the side dam is 1. A twin-roll quenched ribbon manufacturing device, characterized in that it is equipped with a water-cooling chamber and that a copper alloy plate is disposed on a surface forming a casting space. 2. A twin-roll quenched ribbon manufacturing apparatus in which a casting space is formed by two rolls with cylindrical surfaces facing each other and a side dam in contact with the end surface of the rolls, wherein the side dam is provided with an internal water cooling chamber, and A twin-roll quenched ribbon manufacturing device characterized by having a chrome-plated or nickel-based chrome-plated copper plate arranged on the surface forming the casting space. 3. A twin-roll quenched ribbon manufacturing apparatus in which a casting space is formed by two rolls with their cylindrical surfaces facing each other and a side dam in contact with the end surface of the rolls, wherein the side dam is provided with an internal water cooling chamber, and A twin-roll quenched ribbon manufacturing device characterized by a copper plate with alumina dispersed disposed on the surface forming the casting space. 4. Claim 1, characterized in that a vibration device for applying vibration to the side dam is attached.
The twin-roll quenched ribbon manufacturing apparatus according to item 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19453787A JPS6440148A (en) | 1987-08-05 | 1987-08-05 | Apparatus for producing twin roll type rapidly cooled strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19453787A JPS6440148A (en) | 1987-08-05 | 1987-08-05 | Apparatus for producing twin roll type rapidly cooled strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440148A JPS6440148A (en) | 1989-02-10 |
| JPH0422659B2 true JPH0422659B2 (en) | 1992-04-20 |
Family
ID=16326182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19453787A Granted JPS6440148A (en) | 1987-08-05 | 1987-08-05 | Apparatus for producing twin roll type rapidly cooled strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6440148A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8910906D0 (en) * | 1989-05-12 | 1989-06-28 | Davy Distington Ltd | Rotary strip caster edge containment |
| US5390726A (en) * | 1991-03-15 | 1995-02-21 | Nippon Steel Corporation | Process for producing thin metallic strip by continuous casting |
| JP2000117397A (en) * | 1998-10-21 | 2000-04-25 | Nippon Steel Corp | Casting method for thin steel sheet |
| CN110039017B (en) * | 2019-05-21 | 2020-10-23 | 一重集团大连工程技术有限公司 | Cast-rolling side sealing device |
-
1987
- 1987-08-05 JP JP19453787A patent/JPS6440148A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440148A (en) | 1989-02-10 |
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