JPH0366054B2 - - Google Patents
Info
- Publication number
- JPH0366054B2 JPH0366054B2 JP12505185A JP12505185A JPH0366054B2 JP H0366054 B2 JPH0366054 B2 JP H0366054B2 JP 12505185 A JP12505185 A JP 12505185A JP 12505185 A JP12505185 A JP 12505185A JP H0366054 B2 JPH0366054 B2 JP H0366054B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- water supply
- cooling
- cooling device
- width direction
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 10
- 239000000110 cooling liquid Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method 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
- B22D11/06—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
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0685—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting belts
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、ベルトキヤスターのベルト冷却装置
に関し、特に鋳片の長辺面を支持するためのベル
ト背面に配置した冷却装置の構造、とりわけ給水
開口についての提案である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a belt cooling device for a belt caster, and more particularly, to a structure of a cooling device disposed on the back side of a belt for supporting the long sides of a cast slab. This is a proposal regarding the water supply opening.
ベルトキヤスターは、溶融金属なかでも溶綱か
ら厚さが50mm以下の薄鋳片（いわゆるシートバー
等）を直接製造する薄鋳片連続鋳造機である。 A belt caster is a continuous thin slab casting machine that directly produces thin slabs (so-called sheet bars, etc.) with a thickness of 50 mm or less from molten metal.
（従来の技術）
走行径路の一部が向い合わせに対設された輪回
移動する一対の金属ベルトを用いる絞り込み形式
のベルトキヤスターとしては、特開昭59−92154
号として開示されたものがある。この既知技術に
おけるベルトキヤスターは、金属ベルトの背後に
ベルトに面して多数の給・排水口を開口させてな
る“冷却パツド”と呼ばれている冷却装置が配設
してあり、この冷却パツドとベルトとの間に冷却
水の流水膜を形成させることによりベルトの冷却
を果たしている。(Prior art) A narrow belt caster using a pair of circularly moving metal belts with part of the running path facing each other is disclosed in Japanese Patent Application Laid-Open No. 59-92154.
There is one disclosed as No. The belt caster in this known technology is equipped with a cooling device called a "cooling pad" which has a large number of supply and drain ports facing the belt behind the metal belt. The belt is cooled by forming a running water film between the pad and the belt.
ところが、冷却パツドとベルトとの間（通液空
間）は、ベルトのセンタリング等のためにベルト
張力が変動し、その結果幅方向で不均一となる
（鋳片が中くぼみの形状を呈する）。したがつて上
記通液空間を流れる冷却液膜の厚さも不均一とな
り、ひいてはベルト幅方向での冷却も均一でなく
なるという問題点があつた。 However, between the cooling pad and the belt (liquid passage space), the belt tension fluctuates due to belt centering, etc., and as a result, the belt tension becomes uneven in the width direction (the slab takes on the shape of a hollow). Therefore, there is a problem that the thickness of the cooling liquid film flowing through the liquid passage space becomes non-uniform, and as a result, the cooling in the belt width direction also becomes non-uniform.
かような問題点に対して本出願人は、先に特願
昭59−12151号にその解決手段の一端を示したが
完全にその目的を達成するに至つておらず、なお
改善を必要としていた。 The present applicant has previously proposed a solution to these problems in Japanese Patent Application No. 12151/1982, but the objective has not been completely achieved and improvements are still needed. there was.
（発明が解決しようとする問題点）
当該分野における従来技術水準では、ベルト幅
方向での冷却水流水膜による均一支持が阻害さ
れ、ベルト全体が弓なりにたわむために、
(1) 中央部の厚みが薄くなるという鋳片幅方向厚
みの不均一、
(2) ベルトと側板との間から湯もれが生じること
による鋳張りの発生、
(3) ベルトと側板との間で起るステイツキング性
ブレイクアウト、
が不可避に起る。(Problems to be Solved by the Invention) In the prior art in this field, uniform support by the cooling water film in the width direction of the belt is inhibited, and the entire belt bends in an arched manner. (2) Occurrence of casting due to leakage between the belt and the side plate, (3) Statesking property that occurs between the belt and the side plate. A breakout will inevitably occur.
（問題点を解決するための手段）
本発明は、上述した従来技術が抱える、解決を
必要とする問題点に対し、
冷却パツドのベルト幅方向に対応する給水圧損
（給水圧分布）を変化させること、
同一流量の冷却水を前記冷却パツド内に供給す
るときでも、ベルト幅方向での流量分布を調整し
得るようにすること、
を着想の基本とし、第１図、第２図に示すような
給水口の構造を有する冷却パツド：すなわち冷却
装置を提案する。(Means for Solving the Problems) The present invention solves the above-mentioned problems of the prior art that require solutions by changing the water supply pressure loss (water supply pressure distribution) corresponding to the belt width direction of the cooling pad. The basic idea was to be able to adjust the flow rate distribution in the belt width direction even when the same flow rate of cooling water is supplied into the cooling pad, and as shown in Figures 1 and 2. We propose a cooling pad, that is, a cooling device, with a water inlet structure.
かかる冷却装置は、ベルトに面して開口させた
給水口の孔径又はスリツト間〓を、ベルト幅方向
の端部に寄る程大きくし、かつ最端部における給
水口の孔径又はスリツト間〓と中心部における給
水口の孔径又はスリツト間〓との比を１より大き
く５より小さくしたものである。 In such a cooling device, the hole diameter or the distance between the slits of the water supply port opened facing the belt is made larger as it approaches the end in the width direction of the belt, and The ratio of the hole diameter of the water supply port or the gap between the slits in the section is set to be larger than 1 and smaller than 5.
給水口の形態としては、スリツト状のものある
いは孔形のものがあるが、ここにスリツト状給水
口にあつては、ベルト幅方向の最端部におけるス
リツト間〓をWe、中心部におけるスリツト間〓
をWcとすると、スリツト間〓を端部に寄る程中
心部よりも大きくし、かつ１＜We／Wc＜５とし
たものであり、また孔形の給水口にあつては、ベ
ルト幅方向最端部における給水孔の孔径をDe、
中心部における給水孔の孔径をDcとすると、給
水孔の孔径を端部に寄る程中心部よりも大きく
し、かつ１＜De／Dc＜５としたものである。 Water supply ports can be either slit-shaped or hole-shaped. In the case of slit-shaped water supply ports, the distance between the slits at the end in the width direction of the belt is We, and the distance between the slits at the center is 〓
If Wc is the distance between the slits, the distance between the slits should be made larger toward the end than the center, and 1<We/Wc<5, and in the case of a hole-shaped water supply port, The diameter of the water supply hole at the end is De,
When the diameter of the water supply hole in the center is Dc, the diameter of the water supply hole is made larger toward the ends than in the center, and 1<De/Dc<5.
（作用）
ベルト幅方向における給水手段の給水口の孔径
又はスリツト間〓を、ベルト幅方向の端部に寄る
程大きくし、かつ最端部における給水口の孔径又
はスリツト間〓と中心部における給水口の孔径又
はスリツト間〓との比を１より大きく５より小さ
くしたことにより、冷却水流水膜の膜厚が均一に
なるようにしてベルトのたわみを解消し、もつて
鋳片変形を無くすとともに湯さしや鋳張り、ブレ
イクアウトを阻止するようにした。(Function) The hole diameter or the distance between the slits of the water supply means in the belt width direction is made larger as it approaches the ends in the belt width direction, and the hole diameter or the distance between the slits of the water supply means at the end and the water supply at the center are increased. By setting the ratio of the diameter of the opening or the gap between the slits to more than 1 and less than 5, the thickness of the cooling water film becomes uniform, eliminating belt deflection and eliminating slab deformation. Made to prevent boiling, casting, and breakouts.
なお限定の理由は第６図より明らかなように、
端部よりの圧損を小さくし、給水量を増加させる
ために、１＜We／Wc、１＜De／Dcが必要であ
り、We／Wc又はDe／Dcを５以上にしても圧損
はほとんど変化しないため、We／Wc＜５、
De／Dc＜５とした。 The reason for this limitation is as clear from Figure 6.
In order to reduce the pressure drop from the end and increase the amount of water supplied, 1<We/Wc and 1<De/Dc are required, and even if We/Wc or De/Dc is set to 5 or more, the pressure drop will hardly change. Because it is not, We/Wc<5,
De/Dc<5.
（実施例）
本発明におけるベルトキヤスターの代表的な例
を第３図に示すが、その構成を概活的に説明する
と、溶鋼および凝固鋳片を所定の距離にわたつて
保持するための間〓を形造る対向配置にかかる一
対の輪回移動可能な金属ベルト１，２と両ベルト
相互間にあつてその側縁近傍に配置した一対の固
定側板（図示せず）とで先すぼまり形状の鋳造空
間３を構成してなり、かつ該金属ベルト１，２の
冷却のためにその背面に通液空間を隔てて冷却パ
ツド４，５を配置してなるものである。(Example) A typical example of the belt caster according to the present invention is shown in FIG. A pair of circularly movable metal belts 1 and 2 arranged opposite each other to form a tapered shape, and a pair of fixed side plates (not shown) disposed near the side edges between both belts. The metal belts 1 and 2 have a casting space 3, and cooling pads 4 and 5 are arranged on the back side of the metal belts 1 and 2 with a liquid passage space separated therebetween for cooling the metal belts 1 and 2.
冷却パツド４，５は、第１図および第２図に示
すようにベルト幅方向の端部に向うに従つて給水
孔６…の孔径Ｄもしくはスリツト７の〓間Ｗが大
きくなりベルト幅方向の端部に近づくほど給水圧
損が小さくなるようにしたものを用いた。 As shown in FIGS. 1 and 2, the hole diameter D of the water supply holes 6 or the gap W between the slits 7 increases as you move toward the ends in the belt width direction. A type was used in which the water supply pressure loss decreases as it approaches the end.
上記の孔形の給水口を具える冷却パツドについ
て、
本発明…端部から中心に向つて４つの給水孔
の孔径Ｄが4.8mmφ、4.5mmφ、4.0mmφ、3.5mm
φ、と順次に小さくなり、その内側のセンター
までに開口している13個の給水孔3.2mmφ均一
としたものを用いた。なお、各給水孔の孔間距
離は20mmで給水量は200／minである。 Regarding the cooling pad equipped with the above-mentioned hole-shaped water supply ports, the present invention...the hole diameters D of the four water supply holes from the end toward the center are 4.8mmφ, 4.5mmφ, 4.0mmφ, and 3.5mm.
Thirteen water supply holes with a uniform diameter of 3.2 mm were used, which gradually became smaller in diameter and opened to the inner center. The distance between each water supply hole is 20 mm, and the water supply rate is 200/min.
従来例…端部から中心まで、3.2mmφの同一
孔径の給水口を17個20mmピツチで設け、単一ヘ
ツダーで給水量は200／minとした。 Conventional example: 17 water supply ports with the same hole diameter of 3.2mmφ were provided at a 20mm pitch from the end to the center, and the water supply rate was 200/min with a single header.
上記及びの実験例について、ベルトたわみ
量と幅方向の距離との関係を示したのが第４図で
あり、また第５図イ，ロは鋳張り発生率と鋳片の
厚さ変化について本発明と従来例とを比較して示
すグラフであり、本発明法の効果が顕著であるこ
とが判る。 Figure 4 shows the relationship between the amount of belt deflection and the distance in the width direction for the above experimental examples, and Figure 5 A and B show the relationship between the occurrence rate of overcasting and the thickness change of the slab. This is a graph showing a comparison between the invention and a conventional example, and it can be seen that the effect of the method of the present invention is remarkable.
（発明の効果）
以上説明したように本発明によれば、一定厚み
の鋳片を確実に得ることができる他、鋳張りや湯
さし、ならびにそれらに起因するブレイクアウト
のない安定した連続鋳造操業を行うことができ
る。(Effects of the Invention) As explained above, according to the present invention, in addition to being able to reliably obtain slabs of a constant thickness, stable continuous casting is possible without cast casting, boiling, and breakouts caused by them. Operations can be carried out.
第１図は、本発明ベルト冷却装置の一部を示す
部分断面図、第２図は、本発明給水開口の例とし
てスリツトイと給水孔ロを示す正面図、第３図
は、ベルトキヤスターの略線図、第４図は、ベル
トたわみ量に及ぼす影響について本発明を従来例
と比較して示すグラフ、第５図イ，ロは、本発明
の効果を示す鋳張り発生率と鋳片厚さの変化のグ
ラフ、第６図は給水孔径と給水圧損との関係並び
にスリツト間〓と給水圧損との関係を示すグラフ
である。
１，２……金属ベルト、３……鋳造空間、４，
５……冷却パツド、６……給水孔、７……スリツ
ト。
FIG. 1 is a partial sectional view showing a part of the belt cooling device of the present invention, FIG. 2 is a front view showing a slit toy and a water supply hole as an example of the water supply opening of the present invention, and FIG. 3 is a front view of the belt caster. A schematic diagram, FIG. 4 is a graph showing the influence of the present invention on the amount of belt deflection in comparison with a conventional example, and FIG. FIG. 6 is a graph showing the relationship between the water supply hole diameter and the water supply pressure loss, and the relationship between the slit distance and the water supply pressure loss. 1, 2...metal belt, 3...casting space, 4,
5...Cooling pad, 6...Water supply hole, 7...Slit.
Claims (1)
とも一辺を、鋳片引抜きに同期して輪回移動する
金属ベルトで構成し、その金属ベルトの背後に冷
却液の供給、排出機能を有する冷却装置を配設し
て鋳片をベルトを隔てて冷却するようにしたベル
トキヤスターのベルト冷却装置において、 上記冷却装置のベルトに面して開口させた給水
口の孔径又はスリツト間〓を、ベルト幅方向の端
部に寄る程大きくし、かつ最端部における給水口
の孔径又はスリツト間〓と中心部における給水口
の孔径又はスリツト間〓との比を１より大きく５
より小さくしたことを特徴とするベルトキヤスタ
ーのベルト冷却装置。[Claims] 1. At least one side of the part corresponding to the mold that faces each other is constituted by a metal belt that rotates in synchronization with the drawing of the cast slab, and a cooling liquid supply and discharge function is provided behind the metal belt. In a belt cooling device for a belt caster, which is equipped with a cooling device that cools slabs across the belt, , the closer it is to the end in the belt width direction, the larger it is, and the ratio of the hole diameter or slit distance of the water supply port at the extreme end to the hole diameter or slit distance of the water supply port at the center is larger than 1 and 5.
A belt cooling device for a belt caster that is characterized by being smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12505185A JPS61283442A (en) | 1985-06-11 | 1985-06-11 | Belt cooling device for belt casters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12505185A JPS61283442A (en) | 1985-06-11 | 1985-06-11 | Belt cooling device for belt casters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61283442A JPS61283442A (en) | 1986-12-13 |
| JPH0366054B2 true JPH0366054B2 (en) | 1991-10-16 |
Family
ID=14900610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12505185A Granted JPS61283442A (en) | 1985-06-11 | 1985-06-11 | Belt cooling device for belt casters |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61283442A (en) |
-
1985
- 1985-06-11 JP JP12505185A patent/JPS61283442A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61283442A (en) | 1986-12-13 |
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