JPH01284462A - Caterpillar type continuous casting machine and continuous casting method - Google Patents
Caterpillar type continuous casting machine and continuous casting methodInfo
- Publication number
- JPH01284462A JPH01284462A JP11198488A JP11198488A JPH01284462A JP H01284462 A JPH01284462 A JP H01284462A JP 11198488 A JP11198488 A JP 11198488A JP 11198488 A JP11198488 A JP 11198488A JP H01284462 A JPH01284462 A JP H01284462A
- Authority
- JP
- Japan
- Prior art keywords
- continuous casting
- casting machine
- belt
- metal belt
- short
- 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
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009749 continuous casting Methods 0.000 title claims description 32
- 239000002184 metal Substances 0.000 claims abstract description 59
- 229910052751 metal Inorganic materials 0.000 claims abstract description 59
- 238000005266 casting Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000005499 meniscus Effects 0.000 description 7
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002436 steel type Substances 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
- B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、薄鋳片を連続的に製造する連続鋳造機およ
び連続鋳造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a continuous casting machine and a continuous casting method for continuously manufacturing thin slabs.
（従来の技術）
従来、薄鋼板は、水冷された銅製鋳型内に溶鋼を連続的
に供給し、冷却・凝固させ、厚さ２００〜３００ｍｍ程
度のスラブを製造し、このスラブを熱間圧延機および冷
間圧延機によって圧延して製造していた。しかしながら
、前記熱間圧延は消費エネルギーが極めて大きいことか
ら、この熱間圧延に替わる省エネルギー型薄鋳片あるい
は薄板製造設備の実現が望まれていた。このような状況
下にあって、溶鋼から直接薄鋳片または薄板を製造する
技術が種々提案されている。(Prior art) Conventionally, thin steel sheets are produced by continuously supplying molten steel into a water-cooled copper mold, cooling and solidifying it to produce a slab with a thickness of about 200 to 300 mm, and then rolling this slab into a hot rolling machine. It was manufactured by rolling it using a cold rolling mill. However, since the hot rolling consumes an extremely large amount of energy, it has been desired to realize energy-saving thin slab or thin plate production equipment that can replace hot rolling. Under these circumstances, various techniques have been proposed for directly producing thin slabs or sheets from molten steel.
例えば、特願昭６１−１０８６２８号において開示され
た第４図に示す水平式〇薄鋳片連続鋳造機がある。For example, there is a horizontal type thin slab continuous casting machine shown in FIG. 4 disclosed in Japanese Patent Application No. 108628/1982.
この装置は駆動ローラー２で循環される金属べル）１を
上下に対向配置し、この両金属ベルト１間に給湯機７か
ら連続的に溶ｊｌｉ４６を供給し、凝固して薄鋳片９を
製造するものである。また、特開昭６０−９５５５号公
報に開示された第５図に示す垂直式〇薄鋳片連続鋳造機
がある。この装置は、駆動ローラー２で循環される金属
ベルト１を垂直に対向配置し、この両金属ベルトｌの間
に浸漬ノズル１０から溶鋼６を供給して薄鋳片９を連続
的に製造するものである。しかしながら、これら薄鋳片
連続鋳造機には、それぞれ固有の問題を有している。In this device, metal belts (1) which are circulated by a drive roller (2) are disposed vertically facing each other, and molten metal (46) is continuously supplied from a water heater (7) between the two metal belts (1) to solidify and form a thin slab (9). It is manufactured. Furthermore, there is a vertical continuous thin slab casting machine shown in FIG. 5, which is disclosed in Japanese Patent Application Laid-open No. 60-9555. In this device, metal belts 1 that are circulated by drive rollers 2 are arranged vertically facing each other, and molten steel 6 is supplied from an immersion nozzle 10 between the two metal belts 1 to continuously produce thin slabs 9. It is. However, each of these continuous thin slab casting machines has its own problems.
（１）水平式薄鋳片連続鋳造機においては、（ａ）メニ
スカス面が広（、しかも溶鋼を給湯機から注ぎ込むこと
によって場面が波動するため、鋳片表面性状が悪くなる
。（ｂ）溶鋼ヘッドが小さいため、鋳片とベルトとの接
触が悪くなり、不均一凝固を生じ表面性状が悪くなる。(1) In a horizontal thin slab continuous casting machine, (a) the meniscus surface is wide (and the surface is undulated by pouring the molten steel from the water heater, which deteriorates the surface quality of the slab; (b) the molten steel Because the head is small, contact between the slab and the belt is poor, causing uneven solidification and poor surface quality.
（２）垂直式薄鋳片連続鋳造機においては、（ａ）浸漬
ノズルの口径が小断面のため、ノズル詰まりを起こし昌
い、（ｂ）メニスカス短辺幅が鋳片厚より広い機種の場
合には、メニスカス短辺部に凝固殻を生成しないように
加熱する必要がある、など多くの難しい問題がある。(2) In vertical thin slab continuous casting machines, (a) the diameter of the immersion nozzle is small, which may cause nozzle clogging, and (b) the short side width of the meniscus is wider than the slab thickness. There are many difficult problems to solve, such as the need to heat the short side of the meniscus without forming a solidified shell.
（発明が解決しようとする課Ｂ）
この発明の目的は、垂直式薄鋳片連続鋳造機の長所を生
かし、上記した問題を解決して、低コストで表面性状の
良好な薄鋳片を製造し得る連続鋳造機および鋳造方法を
提供することにある。(Problem B to be solved by the invention) The purpose of this invention is to take advantage of the advantages of a vertical continuous thin slab casting machine, solve the above-mentioned problems, and manufacture thin slabs with good surface quality at low cost. The purpose of the present invention is to provide a continuous casting machine and a casting method that can perform continuous casting.
（５Ｂを解決するための手段）
本発明者らは、溶鋼から直接薄鋳片を製造し得る連続鋳
造機および鋳造法について検討を重ねた結果、本発明を
完成するに到った。(Means for solving 5B) The present inventors have completed the present invention as a result of repeated studies on continuous casting machines and casting methods that can directly produce thin slabs from molten steel.
即ち、この発明の要旨は「駆動ローラーにより循環され
る長短二つの無短状金属ベルトと、前記両金属ベルトの
両幅端部近傍で挟持され金属ベルトと共に循環するダム
ブロックを備え、両金属ベルトとダムブロックで形成さ
れる鋳造空間を有する薄鋳片連続鋳造機において、前記
両金属ベルトを所定の間隔をなして垂直に、かつ前記短
金属ベルトを長金属ベルトより僅かに下方に位置して対
向配置し、前記短金属ベルトの直上に溶鋼を鋳造空間に
供給する給湯機を配設したことを特徴とし、前記長金属
ベルトを溶鋼に対し濡れ性の悪い金属ベルトを使用した
ことを特徴とする無限軌道式連続鋳造機であり、また、
前記無限軌道式連続鋳造機により薄鋳片を製造する際に
、ｆ！１ｉｔＡを長金属ベルト面に沿って供給すること
を特徴とする連続鋳造方法」にある。That is, the gist of the present invention is ``a long and a short non-short metal belt that is circulated by a driving roller, and a dam block that is sandwiched near both width ends of the two metal belts and circulates together with the metal belt; In a continuous thin slab casting machine having a casting space formed by a dam block and a dam block, the two metal belts are arranged vertically at a predetermined distance, and the short metal belt is positioned slightly below the long metal belt. The invention is characterized in that a water heater for supplying molten steel to the casting space is disposed directly above the short metal belt, and that the long metal belt is a metal belt that has poor wettability with respect to molten steel. It is an endless track continuous casting machine that
When manufacturing thin slabs using the endless track type continuous casting machine, f! Continuous casting method characterized by supplying 1 itA along the surface of a long metal belt.
（作用）
以下、本発明の無限軌道式連続鋳造機および鋳造方法に
ついて詳しく説明する。(Function) Hereinafter, the endless track type continuous casting machine and casting method of the present invention will be explained in detail.
第１図は、本発明の無限軌道式連続鋳造機の略式断面図
であり、１ａは無端状短金属ベルト、ｌｂは無端状長金
属ベルトであり、これら金属ベル） ｌａ。FIG. 1 is a schematic cross-sectional view of the endless track type continuous casting machine of the present invention, where 1a is an endless short metal belt, lb is an endless long metal belt, and these metal belts (1a).
１ｂは駆動ローラー２によって図中矢印方向に循環され
る。そして、この短金属ベルトｌａと長金属ベルト１ｂ
は垂直に対向配置され、短金属ベルＨａは長金属ベルト
１ｂに対し、僅かに下方に位置するように配設されてい
る。ダムブロック３が両金属ベルトｌａ、１ｂの両幅端
部において挟持されており、金属ベルト１ｇ、１ｂの循
環と同期して循環されるようになっている。そして、両
金属ベルＨａ、ｌｂとダムブロック３とによって鋳造空
間Ｍが形成されている。溶鋼のバルジングを防止するた
めに、金属ベルトｌａ、 ｌｂの背面には複数のバック
アップロール４が設けられている。このバックアップロ
ール４の間には、鋳片冷却水用ノズル５が多数設置され
ている。さらに、前記短金属ベルト１ａの直上には溶！
１６を鋳造空間Ｍ内に供給する給湯１４７が配設されて
いる。前記長金属ベル）ｌｂには、溶鋼と濡れ性の小さ
い金属ベルト、例えば、アルミナ、シリカ等を溶射した
金属ベルトを使用することが望ましい。1b is circulated by the drive roller 2 in the direction of the arrow in the figure. And this short metal belt la and long metal belt 1b
are vertically opposed to each other, and the short metal belt Ha is positioned slightly below the long metal belt 1b. A dam block 3 is held between both width ends of both metal belts la and 1b, and is circulated in synchronization with the circulation of metal belts 1g and 1b. A casting space M is formed by both metal bells Ha, lb and the dam block 3. In order to prevent bulging of molten steel, a plurality of backup rolls 4 are provided on the back side of the metal belts la, lb. Between the backup rolls 4, a large number of slab cooling water nozzles 5 are installed. Further, there is a melting layer directly above the short metal belt 1a!
A hot water supply 147 for supplying hot water 16 into the casting space M is provided. It is desirable to use a metal belt with low wettability with molten steel, for example, a metal belt sprayed with alumina, silica, etc., as the long metal bell) lb.
さて、このような構成からなる無限軌道式連続鋳造機に
より薄鋳片９を製造するには、溶鋼６を給湯機７を介し
鋳造空間Ｍに注入する。鋳造空間Ｈに給湯された溶鋼６
は冷却水ノズル５から噴射される冷却水によって凝固殻
８が形成され、順次冷却されて薄鋳片９が製造される。Now, in order to manufacture the thin slab 9 using the endless track type continuous casting machine having such a configuration, the molten steel 6 is injected into the casting space M via the water heater 7. Molten steel 6 supplied to casting space H
A solidified shell 8 is formed by the cooling water injected from the cooling water nozzle 5, and is sequentially cooled to produce a thin slab 9.
そして、注湯の際には、溶鋼６を長金属ベルＨｂのベル
ト面に沿わせることが好ましい。When pouring, it is preferable that the molten steel 6 be placed along the belt surface of the long metal bell Hb.
本発明は、以上のような構成からなる連続鋳造機および
鋳造法であるから、次のような優れた効果がある。すな
わち、
■垂直型であるため、溶鋼ヘッドを高くでき、溶鋼と金
属ベルトとの接触がよくなる。したがって均一凝固がで
き鋳片表面性状がよくなる。Since the present invention is a continuous casting machine and casting method having the above-described configuration, it has the following excellent effects. That is, (1) Since it is a vertical type, the molten steel head can be raised high, and the contact between the molten steel and the metal belt is improved. Therefore, uniform solidification is possible and the surface quality of the slab is improved.
■短金属ベルトを長金属ベルトより僅かに下方に位置し
たことにより、樋による給湯が行える。■By positioning the short metal belt slightly below the long metal belt, hot water can be supplied through the gutter.
このため、浸漬ノズルを使用した場合のようにノズル詰
まりを生じない。For this reason, nozzle clogging does not occur unlike when a submerged nozzle is used.
■給湯機によって溶鋼を長金属ベルトに沿わせて注湯す
る場合には、特に場面変動が少なくなり鋳片の表面性状
が良くなる。■When pouring molten steel along a long metal belt using a water heater, there are fewer fluctuations in the scene and the surface quality of the slab is improved.
■長金属ベルトを濡れ性の少ないベルトにした場合には
、溶鋼が注がれるベルト面で生成する初期凝固シェルを
抑制できるため、メニスカス部で発生する鋳片表面の二
重肌を防止できる。■If the long metal belt is made of a belt with low wettability, it is possible to suppress the initial solidification shell that forms on the belt surface into which molten steel is poured, thereby preventing double skin on the slab surface that occurs at the meniscus.
■メニスカスの短辺と鋳片の短辺とが同じ幅になるので
、メニスカス短辺部に凝固殻が生じてもよいから、短辺
を加熱するなどの必要がない。■Since the short side of the meniscus and the short side of the slab have the same width, a solidified shell may be formed on the short side of the meniscus, so there is no need to heat the short side.
■メニスカス面が狭くなるから、場面変動が少なくなっ
て鋳片の表面性状が良くなる。■Since the meniscus surface becomes narrower, scene fluctuations are reduced and the surface quality of the slab is improved.
（実施例１）
第１図に示す本発明の無限軌道式連続鋳造機および第４
図に示す従来の水平式連続鋳造機により、それぞれ幅１
０１００Ｏ＋ 、厚さ５０１の薄鋳片を製造し、鋳片表
面の縦割れ状況を調査した。その時使用した溶鋼は第１
表に示す成分のものであり、また、鋳込速度は３．０〜
６．０ｍ／ｓｉｎとした。(Example 1) The endless track type continuous casting machine of the present invention shown in FIG.
The conventional horizontal continuous casting machine shown in the figure each casts a width of 1 mm.
A thin slab of 0100O+ and a thickness of 501 was produced, and the state of vertical cracks on the surface of the slab was investigated. The molten steel used at that time was the first
It has the ingredients shown in the table, and the casting speed is 3.0~
The speed was set at 6.0 m/sin.
第１表 （重量％）
その結果を第２図に示す、この図から、本発明の連続鋳
造機によれば、従来の水平型連続鋳造機に比べ、鋳片表
面の縦割れ指数は約１０分の１に低減していることが分
かる。なお、縦割れ指数とは次で定義されるものである
。鋳片１０１００Ｏ＋長さ当たり（この場合鋳片幅１０
００ｍ■）の縦割れ総長さが１００ｍ−のものを縦割れ
指数１とする。Table 1 (Weight %) The results are shown in Figure 2. From this figure, it can be seen that according to the continuous casting machine of the present invention, the vertical crack index on the slab surface is about 10 compared to the conventional horizontal continuous casting machine. It can be seen that it has been reduced to one-fold. Note that the vertical cracking index is defined as follows. Slab 10100O + per length (in this case, slab width 10
00 m■) with a total length of vertical cracks of 100 m- is defined as a vertical crack index of 1.
（実施例２）
第１図に示す本発明の無限軌道式連続鋳造機の長金属ベ
ルトに軟鋼型の金属ベルトを使用した場合と、アルミナ
セラミックスを厚さ１００μ−溶射して溶鋼との濡れ性
の小さいベルトを使用した場合、および第４図に示す従
来の水平型連続鋳造機により、第１表に示す成分のｆＪ
鋼を使用して幅１０００ｍｍ 、厚さ５０−一の薄鋳片
を製造し、鋳片表面の二重肌状況を調査した。(Example 2) A case where a mild steel type metal belt is used as the long metal belt of the continuous track type continuous casting machine of the present invention shown in Fig. 1, and a case where alumina ceramics are sprayed to a thickness of 100μ to improve wettability with molten steel. fJ of the components shown in Table 1 when using a small belt of
A thin slab with a width of 1000 mm and a thickness of 50 mm was manufactured using steel, and the double skin condition on the surface of the slab was investigated.
その結果を第３図に示す、この図から、本発明の連続鋳
造機に通常の金属ベルトを使用した場合でも、鋳片表面
の二重肌は従来の連続鋳造機に比べ、半減している。ま
た、本発明の鋳造機に溶射ベルトを使用した場合には、
従来型に比較して約２０分の１に低下している。なお、
二重肌とは一旦凝固したシェルに溶鋼が被り、凝固が不
連続になった状態をいう、 また、二重脱指数とは、次
で定義されるものである。鋳片１０００＋ｗｍ長さ当た
り（この場合鋳片幅１００１００Ｏの二重肌個数１個を
二重脱指数１とする。The results are shown in Figure 3. From this figure, even when a normal metal belt is used in the continuous casting machine of the present invention, the double skin on the slab surface is reduced by half compared to the conventional continuous casting machine. . Furthermore, when a thermal spray belt is used in the casting machine of the present invention,
This is about a 20th reduction compared to the conventional type. In addition,
Double skin refers to a state in which molten steel covers the once solidified shell, resulting in discontinuous solidification. Also, double de-exponentialization is defined as follows. Per length of slab 1000+wm (in this case, the number of double skins of slab width 100100O is 1 piece is defined as double despondency 1).
第１図は本発明の無限軌道式連続鋳造機の略式断面図、
第２図は本発明の鋳造機および従来の水平型鋳造機によ
り製造された鋳片表面の縦割れ指数を比較した図、
第３図は本発明の鋳造機の長金属ベルトに通常の金属ベ
ルトと溶射ベルトを使用した場合、および従来の鋳造機
によって製造した鋳片表面の二重脱指数を比較した図、
第４図は従来の水平型連続鋳造機の略式断面図、第５図
は従来の垂直型連続鋳造機の略式断面図、である。Fig. 1 is a schematic cross-sectional view of the continuous track type casting machine of the present invention; Fig. 2 is a diagram comparing the longitudinal cracking index of the surface of slabs produced by the casting machine of the present invention and the conventional horizontal casting machine; Fig. 3 is a comparison of the double despondency of the surface of a slab produced by a conventional casting machine and when a regular metal belt and a thermal sprayed belt are used as the long metal belt of the casting machine of the present invention. 5 is a schematic sectional view of a conventional horizontal continuous casting machine, and FIG. 5 is a schematic sectional view of a conventional vertical continuous casting machine.
Claims (3)
金属ベルトと、前記両金属ベルトの両幅端部近傍で挟持
され金属ベルトと共に循環するダムブロックを備え、前
記両金属ベルトとダムブロックとで形成された鋳造空間
を有する無限軌道式連続鋳造機において、前記両金属ベ
ルトを所定の間隔をなして垂直に、かつ前記短金属ベル
トを長金属ベルトより僅かに下方に位置して対向配置し
、前記短金属ベルトの直上に給湯樋を配設したことを特
徴とする無限軌道式連続鋳造機。(1) Two long and short endless metal belts circulated by a drive roller, and a dam block sandwiched near both width ends of the two metal belts and circulated together with the metal belt, wherein the two metal belts and the dam block In a track type continuous casting machine having a formed casting space, the two metal belts are vertically disposed at a predetermined interval, and the short metal belt is positioned slightly below the long metal belt to face each other, A continuous track type continuous casting machine, characterized in that a hot water supply gutter is disposed directly above the short metal belt.
機の長金属ベルトを溶鋼に対し濡れ性の小さい金属ベル
トにすることを特徴とする無限軌道式連続鋳造機。(2) An endless track type continuous casting machine, characterized in that the long metal belt of the endless track type continuous casting machine according to claim 1 is a metal belt with low wettability to molten steel.
機により薄鋳片を製造するに際し、溶鋼を長金属ベルト
面に沿うように給湯することを特徴とする薄鋳片の連続
鋳造方法。(3) Continuous casting of thin slabs, characterized by supplying molten steel along the surface of the long metal belt when manufacturing thin slabs using the endless track type continuous casting machine according to claim 1. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11198488A JPH01284462A (en) | 1988-05-09 | 1988-05-09 | Caterpillar type continuous casting machine and continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11198488A JPH01284462A (en) | 1988-05-09 | 1988-05-09 | Caterpillar type continuous casting machine and continuous casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01284462A true JPH01284462A (en) | 1989-11-15 |
Family
ID=14575034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11198488A Pending JPH01284462A (en) | 1988-05-09 | 1988-05-09 | Caterpillar type continuous casting machine and continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01284462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826640A (en) * | 1996-01-11 | 1998-10-27 | Larex A.G. | Cooling system for a belt caster and associated methods |
-
1988
- 1988-05-09 JP JP11198488A patent/JPH01284462A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826640A (en) * | 1996-01-11 | 1998-10-27 | Larex A.G. | Cooling system for a belt caster and associated methods |
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