JPH0137807Y2 - - Google Patents
Info
- Publication number
- JPH0137807Y2 JPH0137807Y2 JP13318084U JP13318084U JPH0137807Y2 JP H0137807 Y2 JPH0137807 Y2 JP H0137807Y2 JP 13318084 U JP13318084 U JP 13318084U JP 13318084 U JP13318084 U JP 13318084U JP H0137807 Y2 JPH0137807 Y2 JP H0137807Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- gap
- continuous casting
- copper
- sleeve
- 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
- 238000009749 continuous casting Methods 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、銅を含む非鉄金属の水平連続鋳造に
使用する横型鋳型の新規構造に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a new structure of a horizontal mold used for horizontal continuous casting of non-ferrous metals including copper.
（従来の技術）
非鉄金属、特に銅、銅合金、含銅合金の水平連
続鋳造においては、従来、第２図に示すように、
横型の銅製鋳型１の外側に通水フレーム２を結合
して水冷し内側に潤滑機能を持つ黒鉛製のスリー
ブ３をはめ合わせ、スリーブ３によりタンデイツ
シユのフイードノズル４の端面とテーパはめあい
し衝合せ結合した横型鋳型アセンブリーが使用さ
れている。この連続鋳造においては、黒鉛スリー
ブを使用するに拘らず、鋳片の表面荒れが生じ表
面品質が劣化する。(Prior art) In horizontal continuous casting of nonferrous metals, especially copper, copper alloys, and copper-containing alloys, conventionally, as shown in Fig. 2,
A water passage frame 2 is connected to the outside of a horizontal copper mold 1, and a graphite sleeve 3 having a lubricating function is fitted inside the water-cooled mold, and the sleeve 3 is tapered and butt-fitted to the end face of the feed nozzle 4 of the tundish. A horizontal mold assembly is used. In this continuous casting, the surface of the slab becomes rough and its surface quality deteriorates, regardless of the use of a graphite sleeve.
（考案が解決しようとする問題点）
本考案は上記水平連続鋳造の鋳片の表面荒れを
解消することを目的とする。(Problems to be Solved by the Invention) The object of the present invention is to eliminate the surface roughness of the above-mentioned horizontal continuous casting slab.
（問題点を解決するための手段）
水平連続鋳造においては、他の連続鋳造方式と
異なり、タンデイツシユ・鋳型直結構造のため、
鋳型への溶湯の流入状況の目視により凝固殻形成
状況を判断することはできない。鋳片の表面荒れ
の発生する原因は、表面荒れの状況、発生個所等
により複雑多岐にわたるが、検討の結果、上記連
続鋳造の場合における最も確からしい結論とし
て、溶湯からの凝固殻形成の開始点が、通常連鋳
では銅製水冷鋳型に最初に接する内端の位置であ
ることから、それに該当する黒鉛スリーブ内位置
の付近と考えられているが、鋳片の間歇的引抜の
引抜停止中にそれよりさらにタンデイツシユ側に
近寄つた位置に移行しフイードノズル内で凝固殻
の形成が始まり、フイードノズルは耐火物でいは
ば粗面体であるので、その粗面に接して鋳片の引
抜が行なわれることが直接的原因であり、遠因と
しては銅を含む非鉄合金の水平連続鋳造の場合、
鋳型、スリーブの熱伝導により溶湯からの奪熱が
かなり急速に行なわれることに基因するとの知見
を得た。(Means for solving the problem) Unlike other continuous casting methods, horizontal continuous casting has a structure in which the tundish and mold are directly connected.
The state of solidified shell formation cannot be determined by visually observing the flow of molten metal into the mold. The causes of surface roughness on slabs are complex and diverse, depending on the condition of the surface roughness, the location where it occurs, etc., but as a result of our investigation, the most probable conclusion in the case of the above continuous casting is that it is the starting point of solidified shell formation from the molten metal. In normal continuous casting, this is the position of the inner end that first contacts the copper water-cooled mold, so it is thought to be near the corresponding position inside the graphite sleeve. As it moves closer to the tundish side, a solidified shell begins to form inside the feed nozzle, and since the feed nozzle is a refractory material with a rough surface, the slab is drawn in contact with the rough surface. In the case of horizontal continuous casting of nonferrous alloys containing copper, the direct cause and remote cause are
It was discovered that this is due to the fact that heat is removed from the molten metal quite rapidly due to heat conduction through the mold and sleeve.
本考案は、この知見により鋳片表面荒れの防止
対策として創案されたものであつて、溶湯の鋳型
内流入部からの抜熱を減ずるため、黒鉛スリーブ
と銅製鋳型との境界にタンデイツシユ寄り側の適
切な位置に熱伝達の障壁を設けること、この障壁
として適当な隙間寸法のギヤツプを設けることを
骨子としている。すなわち本考案の横型連続鋳造
用鋳型は、銅製鋳型内周とその内側にはめあわせ
る黒鉛製スリーブ外周との間に溶湯の流入側寄り
に鋳型長さの1/2以内の範囲にわたり隙間寸法が
0.1〜0.2mmのギヤツプを設けたことを特徴として
いる。 The present invention was devised based on this knowledge as a measure to prevent surface roughness of the slab.In order to reduce the heat loss from the inlet of the molten metal into the mold, the present invention was developed by installing a tundish side near the boundary between the graphite sleeve and the copper mold. The key points are to provide a heat transfer barrier at an appropriate location, and to provide a gap with an appropriate gap size as this barrier. In other words, the horizontal continuous casting mold of the present invention has a gap between the inner periphery of the copper mold and the outer periphery of the graphite sleeve fitted inside the copper mold over a range of up to 1/2 of the length of the mold on the inflow side of the molten metal.
It is characterized by having a gap of 0.1 to 0.2 mm.
以下、本考案を第１図の実施例により具体的に
説明する。第１図において、銅製鋳型１はその外
側に水密を保つて通水フレーム２をはめあわせ鋳
型フランジ１′に結合し通水により冷却される。
その内側はフランジ１′のある溶湯流入側を鋳型
長さの1/2以内の範囲で0.1〜0.2mm程度くり拡げ
１″を設けて形成される。鋳型１内には外周段付
の黒鉛製スリーブ３をはめ合せ、その段部３′を
鋳型フランジ１′に衝合わせ、さらにスリーブ内
端外周のテーパ部３″をタンデイツシユ側のフイ
ードノズル４の内周のテーパ端４′とテーパはめ
あいのもとに衝合せて、鋳型アセンブリーを組立
てる。組立状態で黒鉛スリーブ３の外周と鋳型内
周くり拡げ１″との間には前記0.1〜0.2mmの隙間
寸法のギヤツプ５が生ずる。このギヤツプ５を極
端に大きくするとスリーブ３の割れが発生し、使
用上の問題が起るので、ギヤツプの隙間は0.2mm
以下が適切である。またギヤツプが極端に小さい
と熱伝達遮断効果が低下したり、取扱上の困難を
招くので0.1mm以上とするのがよい。またギヤツ
プ５の長さは鋳型長さの1/2以下程度で足り、こ
れより長いとはめあいの長さが短かくなり、操業
上の問題が生ずる。 Hereinafter, the present invention will be explained in detail with reference to the embodiment shown in FIG. In FIG. 1, a copper mold 1 is fitted with a water-permeable frame 2 on the outside thereof to be water-tight and connected to a mold flange 1', and is cooled by water passage.
The inside of the mold 1 is formed by widening the molten metal inflow side with the flange 1' by about 0.1 to 0.2 mm within 1/2 of the mold length. Fit the sleeve 3, align the stepped part 3' with the mold flange 1', and then align the tapered part 3'' on the outer periphery of the inner end of the sleeve with the tapered end 4' on the inner periphery of the feed nozzle 4 on the tundish side for a taper fit. Assemble the mold assembly. In the assembled state, a gap 5 with a gap size of 0.1 to 0.2 mm is created between the outer circumference of the graphite sleeve 3 and the mold inner circumference 1''. If this gap 5 is made extremely large, cracks will occur in the sleeve 3. , the gap between the gaps is 0.2mm to avoid problems during use.
The following are suitable: Furthermore, if the gap is extremely small, the heat transfer blocking effect will be reduced and handling will be difficult, so it is better to set it to 0.1 mm or more. Further, the length of the gap 5 should be about 1/2 or less of the mold length; if it is longer than this, the length of the fit will be shortened, causing operational problems.
（作用）
本考案によると、ギヤツプ５を設けることによ
りその部分での黒鉛スリーブ３の冷却能力が低下
し、凝固開始が遅れるので、凝固殻の形成開始点
がスリーブの中央部より後半に向つて移行するこ
とになり、フイードノズル内で凝固が起らなくな
るため、荒面荒れは防止される。(Function) According to the present invention, by providing the gap 5, the cooling ability of the graphite sleeve 3 at that part is reduced, and the start of solidification is delayed, so that the formation start point of the solidified shell is shifted from the center of the sleeve toward the latter half. As a result, coagulation will not occur within the feed nozzle, and roughening of the surface will be prevented.
（実施例）
前記第１図の実施例の他、ギヤツプ５はその部
分の黒鉛スリーブ３の減径により設けることがで
きる。また鋳型１、スリーブ３の双方に分担させ
て設けることもできる。(Embodiment) In addition to the embodiment shown in FIG. 1, the gap 5 can be provided by reducing the diameter of the graphite sleeve 3 at that portion. Further, it is also possible to provide both the mold 1 and the sleeve 3 in a shared manner.
（考案の効果）
本考案によると、鋳片の表面性状は良くなり、
無手入で後工程に送れるようになつた。(Effect of the invention) According to the invention, the surface quality of the slab is improved,
It is now possible to send it to subsequent processes without any maintenance.
またこれとともに黒鉛スリーブの寿命は延長さ
れた。このことはフイードノズルで表面荒れを生
じた鋳片がスリーブを擦つて引抜れる状況になら
ないこと、スリーブ内での凝固によつては鋳型ア
センブリの損傷が起らないこと、従つて本考案の
前記知見が正しかつたことを間接的に示す証左で
もある。 At the same time, the life of the graphite sleeve has been extended. This means that the slab whose surface has been roughened by the feed nozzle will not rub against the sleeve and be pulled out, and that solidification within the sleeve will not damage the mold assembly. This is also indirect evidence that the statement was correct.
第１図は本考案の横型連続鋳造用鋳型の１実施
例の縦断側面図、第２図は従来技術による同種鋳
型の縦断側面図である。
１…銅製鋳型、１′…鋳型フランジ、１″…くり
拡げ、２…通水フレーム、３…黒鉛スリーブ、
３′…段部、３″…テーパ部、４…フイードノズ
ル、４′…テーパ端、５…ギヤツプ。
FIG. 1 is a longitudinal sectional side view of one embodiment of the horizontal continuous casting mold of the present invention, and FIG. 2 is a longitudinal sectional side view of a similar mold according to the prior art. 1...Copper mold, 1'...mold flange, 1''...opening, 2...water flow frame, 3...graphite sleeve,
3'...Step part, 3''...Tapered part, 4...Feed nozzle, 4'...Tapered end, 5...Gap.
Claims (1)
製スリーブ外周との間に溶湯の流入側寄りに鋳
型長さの1/2以内の範囲にわたり隙間寸法が0.1
〜0.2mmのギヤツプを設けたことを特徴とする
横型連続鋳造用鋳型。 (2) ギヤツプを銅製鋳型内周壁面のくり拡げとし
て形成した実用新案登録請求の範囲第１項記載
の横型連続鋳造用鋳型。 (3) ギヤツプを黒鉛製スリーブの外周の減径によ
り形成した実用新案登録請求の範囲第１項記載
の横型連続鋳造用鋳型。[Scope of Claim for Utility Model Registration] (1) A gap dimension of 0.1 between the inner periphery of the copper mold and the outer periphery of the graphite sleeve fitted inside the mold over an area within 1/2 of the length of the mold near the inlet side of the molten metal.
A horizontal continuous casting mold featuring a ~0.2mm gap. (2) The horizontal continuous casting mold according to claim 1, wherein the gap is formed as a hollowed out inner peripheral wall of the copper mold. (3) The horizontal continuous casting mold according to claim 1, wherein the gap is formed by reducing the diameter of the outer periphery of a graphite sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13318084U JPH0137807Y2 (en) | 1984-08-31 | 1984-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13318084U JPH0137807Y2 (en) | 1984-08-31 | 1984-08-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6149658U JPS6149658U (en) | 1986-04-03 |
| JPH0137807Y2 true JPH0137807Y2 (en) | 1989-11-14 |
Family
ID=30691732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13318084U Expired JPH0137807Y2 (en) | 1984-08-31 | 1984-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0137807Y2 (en) |
-
1984
- 1984-08-31 JP JP13318084U patent/JPH0137807Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6149658U (en) | 1986-04-03 |
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