JPS63235047A - Method of continuously producing thin plate - Google Patents
Method of continuously producing thin plateInfo
- Publication number
- JPS63235047A JPS63235047A JP6561287A JP6561287A JPS63235047A JP S63235047 A JPS63235047 A JP S63235047A JP 6561287 A JP6561287 A JP 6561287A JP 6561287 A JP6561287 A JP 6561287A JP S63235047 A JPS63235047 A JP S63235047A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- casting
- thin plate
- roll
- main roll
- 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 23
- 239000002184 metal Substances 0.000 claims abstract description 63
- 238000005266 casting Methods 0.000 claims abstract description 35
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000010409 thin film Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 238000007796 conventional method Methods 0.000 description 9
- 230000003746 surface roughness Effects 0.000 description 9
- 238000009749 continuous casting Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000316887 Saissetia oleae Species 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004544 sputter deposition 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
- B22D11/064—Accessories therefor for supplying molten metal
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は溶融金属から直接高面精度の薄板を連続的に製
造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for continuously manufacturing thin plates with high surface accuracy directly from molten metal.
現有の連続鋳造装置で製造できる薄板の厚さは数回以上
で、面粗さは±ｌｎｍ以上もあり、しかも、薄板の表面
にはかなり厚いスケールが発生している。従って、厚さ
１ｎ１１以下の市販されている高面精度の圧延材（以下
市販材とよぶ）にするにはスケールを除去後、従来のよ
うに圧延→焼鈍→圧延をくりかえし行なっている。その
ため、大巾なコストダウンは望めない。The thickness of the thin plate that can be produced using the existing continuous casting equipment is several times or more, the surface roughness is ±1 nm or more, and, moreover, a fairly thick scale is generated on the surface of the thin plate. Therefore, in order to obtain a commercially available rolled material with a thickness of 1n11 or less with high surface precision (hereinafter referred to as commercially available material), after removing the scale, rolling→annealing→rolling is repeatedly performed as in the conventional method. Therefore, drastic cost reductions cannot be expected.
発明者らは、「薄板の製造装置及び製造法」として発明
を出願した。これは本発明の主旨と同様に溶融物質から
直接高面精度の薄板を製造する装置及びその方法である
。確かに、従来法によれば高面精度の薄板は製造できる
。しかし、この方法は注湯方式が容器内の溶融金属を強
制的にガス圧によって鋳込口から噴出させるため、注湯
量が必然的に多くなってしまう。注湯量を少なくするに
は鋳込口開口部を小さくするか、噴出ガス圧を少なくす
るなどの方法が考えられるが、この方法によると溶融金
属が鋳込口で詰まってしまい噴出されない。このように
従来法では注湯量を少なくコントロールできず、どうし
ても多量になってしまう。従って、厚さｉｎｎ以下の薄
板を製造するにはロール回転を高速にして（ロール周速
が約５ｍ／Ｓ以上）、多量に噴出された溶融金属を引伸
し、薄板化するしかない。The inventors filed an application for the invention as a "device and method for manufacturing thin plates." Similar to the gist of the present invention, this is an apparatus and method for directly manufacturing thin plates with high surface precision from molten material. It is true that thin plates with high surface precision can be manufactured using conventional methods. However, in this method, the molten metal in the container is forcibly ejected from the casting spout using gas pressure, so the amount of poured metal inevitably increases. Possible ways to reduce the amount of poured metal include making the opening of the casting spout smaller or reducing the pressure of the ejected gas, but with these methods, the molten metal clogs the spout and is not ejected. In this way, in the conventional method, the amount of poured metal cannot be controlled to be small, and the amount inevitably becomes large. Therefore, in order to produce a thin plate with a thickness of inn or less, the only way is to rotate the rolls at high speed (roll circumferential speed is about 5 m/s or more), stretch a large amount of molten metal spouted out, and thin the plate.
ロールを高速化することは小量の薄板を製造する場合は
支障ないが、これが昼夜連続的に量産化する場合は、ロ
ール回転が高速であると、１）ロールの摩耗、２）ロー
ル傷の発生、３）ロールの温度上昇、４）ロールの冷却
構造、５）軸受の摩耗、６）軸受の温度上昇などの点で
問題になり、連続運転ができず、連続鋳造装置としては
不適である。Increasing the speed of the rolls does not pose a problem when manufacturing small quantities of thin plates, but when mass production is carried out day and night, high-speed roll rotation causes problems such as 1) roll wear and 2) roll scratches. 3) Roll temperature rise, 4) Roll cooling structure, 5) Bearing wear, 6) Bearing temperature rise, etc., making it impossible to operate continuously and making it unsuitable as a continuous casting machine. .
上記した従来技術の注湯方式による薄板の製造では注湯
量をコントロールすることができず、注湯量が多くなり
、その結果、ロール回転を高速にしなければならない、
従って、連続的に薄板を製造する装置としては問題があ
った。In manufacturing thin plates using the conventional pouring method described above, the amount of poured metal cannot be controlled, and the amount of poured metal increases.As a result, the roll rotation must be made faster.
Therefore, there was a problem as an apparatus for continuously manufacturing thin plates.
本発明の目的は、注湯量のコントロールが可能になり、
ロール回転が低速化し、連続的に薄板の製造ができる方
法を提供することにある。The purpose of the present invention is to enable control of the amount of poured metal,
The purpose of the present invention is to provide a method in which the rotation speed of the rolls is reduced and thin plates can be manufactured continuously.
上記した注湯量のコントロールは従来のようにガス圧で
強制的に噴出させるのではなく、鋳込口から自然に流出
させる注湯方式によって達成される。すなわち、例えば
、バケツに水を入れて満杯になったり自然にあれるよう
に、鋳込樋に溶融金属を注ぎ満杯になったら鋳込口がら
自然に徐々に流出することを利用した。また、流出スピ
ードをできるだけおさえるため、従来のように、ロール
の上側から落下させ加速させるのではなく、あふれた溶
融金属が水平に流出しロールに付着して巻上げられるよ
うにした。The above-mentioned control of the amount of poured molten metal is achieved by a pouring method that allows the molten metal to flow out naturally from the pouring spout, rather than being forcibly ejected using gas pressure as in the conventional method. That is, for example, in the same way that a bucket filled with water would naturally flow, molten metal was poured into a casting gutter and when it became full, it would naturally flow out gradually through the casting spout. In addition, in order to suppress the outflow speed as much as possible, the overflowing molten metal flows out horizontally, adheres to the roll, and is wound up, instead of falling from the top of the roll and accelerating it as in the past.
溶融金属から直接高面精度の薄板（厚さが１１Ｉｎ以下
）を連続的に製造するには、ロール周速を現在の連続鋳
造装置のスピードとほぼ同等にする必要がある。そのた
めには注湯量をできるだけ少なくする必要がある。第１
図は本発明の薄板の連続鋳造方法を示したものである。In order to continuously produce thin plates with high surface accuracy (thickness of 11 In or less) directly from molten metal, it is necessary to make the roll circumferential speed approximately equal to the speed of current continuous casting equipment. For this purpose, it is necessary to reduce the amount of poured molten metal as much as possible. 1st
The figure shows the method for continuous casting of thin plates according to the present invention.
低速で所定の方向に回転している内部水冷した大小二個
のロール、すなわち、主ロール１０と副ロール１１間に
溶融金属３を注湯し、ロール間で圧延して薄板１２を製
造するもので、ロール径は必ずしも異径にする必要はな
い、なお、図示していないが、主、副ロール間は接触、
非接触で油圧シリンダで加圧されている。取鍋１中の溶
融金属３はストッパ２により注湯量がコントロールされ
なから鋳込樋４中に注湯される。注湯された溶融金属３
は遮へい板５の底部開口部を通過し、下注法により鋳込
口６側へ鋳込まれる。この下注法により、遮へい板５の
底部開口部を所定の間隙にすることによって溶融金属中
のスラグ、及び、酸化物などが除去され清浄な溶融金属
３のみが鋳込口側へ鋳込まれる特徴をもっている。この
清浄な溶融金属は本発明のような薄板の厚さが１ｆｆ１
１以下と薄い場合、非常に重要である。すなわち、従来
のように厚さが放間で。Molten metal 3 is poured between two internally water-cooled large and small rolls rotating in a predetermined direction at low speed, namely a main roll 10 and a sub roll 11, and rolled between the rolls to produce a thin plate 12. The roll diameters do not necessarily have to be different diameters.Although not shown, the main and sub rolls should be in contact with each other.
Pressurized by a hydraulic cylinder without contact. The molten metal 3 in the ladle 1 is poured into a casting trough 4 without controlling the amount of molten metal poured by a stopper 2. Poured molten metal 3
passes through the bottom opening of the shielding plate 5 and is cast into the casting port 6 side by the bottom pouring method. By this pouring method, slag, oxides, etc. in the molten metal are removed by creating a predetermined gap in the bottom opening of the shielding plate 5, and only clean molten metal 3 is poured into the casting opening. It has characteristics. This clean molten metal has a thin plate thickness of 1ff1 as in the present invention.
If it is as thin as 1 or less, it is very important. In other words, the thickness is uniform like before.
スラグが巻き込んだ場合は、その部分をサンダーなどで
削り、その後、圧延→焼鈍→圧延をすれば平滑になる。If slag is involved, sand the part with a sander or the like, and then perform rolling → annealing → rolling to make it smooth.
しかし、本発明の場合は従来法と異なり、上述の圧延工
程を含まず、直接溶融金属が圧延されて製品となるため
、スラグ及び酸化物などの混入は許されない。そのため
、さらに鋳込樋の鋳込口側の上部には鋳込口側の溶融金
属の酸化を防止するために不活性ガス導入管９が設置さ
れ、溶融金属が主ロールで巻上げられて副ロール間で圧
延される直前まで不活性雰囲気となっているため溶融金
属の酸化が完全に防止される。なお、不活性ガスは鋳込
口側から排出される。本発明の第一の注湯方法は上記し
た取鍋から鋳造樋へ注湯された溶融金属が主ロールと非
接触で近接している鋳込口から自然に流出し、主ロール
に巻上げられることである。すなわち、鋳込樋中には鋳
込口の高さとほぼ同じところに湯面センサ１４が設置さ
れ、取鍋１より注湯された溶融金属がこの面に達すると
湯面センサが働く。この場面センサは取鍋中のストッパ
と連動されており、注湯量制御器１５によって所定の注
湯量になるようストッパが上・上移動して制御される。However, in the case of the present invention, unlike the conventional method, the above-mentioned rolling step is not included, and the molten metal is directly rolled into a product, so that the contamination of slag, oxides, etc. is not allowed. Therefore, in order to prevent oxidation of the molten metal on the pouring port side, an inert gas introduction pipe 9 is installed at the upper part of the casting gutter on the pouring port side. Since the atmosphere is inert until just before rolling, oxidation of the molten metal is completely prevented. Note that the inert gas is discharged from the pouring port side. The first pouring method of the present invention is that the molten metal poured from the ladle into the casting trough naturally flows out from the casting spout which is close to the main roll without contacting it, and is rolled up onto the main roll. It is. That is, a hot water level sensor 14 is installed in the pouring gutter at approximately the same height as the casting spout, and when the molten metal poured from the ladle 1 reaches this surface, the hot water level sensor is activated. This scene sensor is linked to a stopper in the ladle, and is controlled by a pouring amount controller 15 to move the stopper up and down so that a predetermined pouring amount is achieved.
また、鋳造樋には溶融金属及びスラグのオーバフローノ
ズルが設けられ、万一、注湯量が多くなった場合は、こ
こから容器８へ流出されるようにし、場面の変動をおさ
えた。In addition, an overflow nozzle for molten metal and slag was provided in the casting gutter, so that in the event that the amount of poured molten metal increased, it would flow from there into the container 8, thereby suppressing fluctuations in the situation.
従って、鋳込口から主ロールへの注湯量のコントロール
はきわめて精度よくでき、しかも、鋳込口からあふれた
溶融金属は水平に主ロール側へ流出されるため、従来法
（第３図）のように上から下へ流出されないため加速さ
れるようなことはなく、注湯量が多くなることは全くな
く、一定の注湯量のコントロールが容易にできる。また
、第２図に鋳込口の正面図を示すが、鋳込口から流出す
る溶融金属は従来法のように鋳込口から満杯になって流
出されるのではなく、鋳込口の上部とは接触せず流出さ
れるため、従来法のように溶融金属が詰まって流出され
ないなどのトラブルは全くない。Therefore, the amount of metal poured from the spout to the main roll can be controlled with extremely high precision, and the molten metal overflowing from the spout flows horizontally to the main roll, which is different from the conventional method (Figure 3). Since the molten metal does not flow from the top to the bottom, it is not accelerated and the amount of poured molten metal does not increase at all, making it easy to control the amount of poured molten metal at a constant level. In addition, Fig. 2 shows a front view of the casting spout, and the molten metal flowing out from the casting spout does not flow out from the spout completely as in the conventional method, but from the upper part of the casting spout. Because it flows out without coming into contact with the metal, there are no problems such as the molten metal clogging and preventing it from flowing out, which is the case with conventional methods.
第３図は従来法による薄板の製造装置を示す。主ロール
１０と副ロール１１間は油圧シリンダ１３によって加圧
されており、主ロールの直上に鋳造樋が設置され、溶融
金属３は鋳込口６よりＡｒ。FIG. 3 shows a conventional thin plate manufacturing apparatus. The space between the main roll 10 and the auxiliary roll 11 is pressurized by a hydraulic cylinder 13, a casting gutter is installed directly above the main roll, and the molten metal 3 is poured into the casting hole 6 using Ar.
Ｎ２ガス圧により主ロールの表面に噴出され圧延されて
薄板１２となる。第４図は鋳込口を示す。The N2 gas pressure is injected onto the surface of the main roll and rolled into the thin plate 12. Figure 4 shows the casting opening.
Ｗは製造しようとする薄板の幅で、Ｔは注湯量をコント
ロールするための間隙である。Ｔの値は溶融金属の材質
によって変化するが通常は約ＩＩｙａ位である。これ以
下では溶融金属が詰まってしまい、逆に、大きくなると
注湯量が多くなり、ロール回転を高速にしなければなら
ない。第５図は第４図のＷの値を３０ｎｍ、Ｔの値を１
ｍとして薄板を製造し、薄板の板厚とロール周速の関係
を示したものである。図から明らかなように、ロール周
速は現在の連鋳スピード（約０ 、５ ｍ ／ ｓ ）
とはほど遠く、かなり高速であり、従来法では前述した
ような理由で連続的に薄板が製造できないことがわかる
。W is the width of the thin plate to be manufactured, and T is the gap for controlling the amount of poured metal. The value of T varies depending on the material of the molten metal, but is usually about IIya. If it is less than this, the molten metal will become clogged, and if it is too large, the amount of poured metal will increase and the roll rotation speed will have to be increased. In Figure 5, the value of W in Figure 4 is 30 nm, and the value of T is 1.
A thin plate was produced with m, and the relationship between the thickness of the thin plate and the circumferential speed of the roll is shown. As is clear from the figure, the roll circumferential speed is the current continuous casting speed (approximately 0.5 m/s)
This is far from the case, and the speed is quite high, indicating that conventional methods cannot continuously produce thin plates for the reasons mentioned above.
［実施例１コ
本発明の第１図に示した製造装置で下記に示す製造条件
で薄板を製造した。[Example 1] A thin plate was manufactured using the manufacturing apparatus shown in FIG. 1 of the present invention under the manufacturing conditions shown below.
１）主ロールの形状：直径１０００ｍ＋、幅５００〃
材質二合金工具鋼（ＳＫＤ−６１ｇ４）内部水冷構造
、硬さ
ｖ５０
〃 面粗さ＝０．２μｍ
２）副ロールの形状：直径５００ｎｍ、幅５００ｍ＋！
ｌ 材質二合金工具鋼（ＳＫＤ−６１ｎ４）内部水冷
構造、Ｈｖ
！１ 面粗さ＝０．２μｍ
３）溶融金属の材質：ＳＵＳ３０４Ｍ
４）主、副ロールの周速＝０．２〜１ｍ／ｓ５）主、副
ロール間の間隙：０．０６ｍｍ６）鋳込口の幅：３００
ｓ
その結果、幅３００ａｓ、厚さが０．１〜０．５ｍの薄
板が製造できた。第６図は製造した薄板の板厚とロール
周速の関係を示す。注湯量が一定なため板厚はロール周
速に依存する。すなわち、ロール周速が増加する程板厚
は減少するが、本発明法で製造した薄板のロール周速は
０．２〜１ ｍ ／ ｓの範囲であり、この値は現在の
連続鋳造装置のスピードとほぼ同じであり、本発明法の
注湯方式により薄板の連続鋳造が可能となった。また、
薄板の面粗さを測定したところ０．２μｍと高面積度で
あった。この値はロール表面の面粗さが転写されたもの
である。1) Shape of main roll: diameter 1000m+, width 500〃
Material: Dual-alloy tool steel (SKD-61g4) Internal water-cooled structure, hardness v50 Surface roughness = 0.2 μm 2) Shape of sub-roll: diameter 500 nm, width 500 m+!
l Material: Dual-alloy tool steel (SKD-61n4) Internal water cooling structure, Hv! 1 Surface roughness = 0.2 μm 3) Molten metal material: SUS304M 4) Circumferential speed of main and sub rolls = 0.2 to 1 m/s 5) Gap between main and sub rolls: 0.06 mm 6) Casting opening Width: 300
s As a result, a thin plate with a width of 300 as and a thickness of 0.1 to 0.5 m was manufactured. FIG. 6 shows the relationship between the thickness of the manufactured thin plate and the circumferential speed of the roll. Since the amount of poured metal is constant, the plate thickness depends on the circumferential speed of the rolls. That is, as the roll peripheral speed increases, the plate thickness decreases, but the roll peripheral speed of the thin plate manufactured by the method of the present invention is in the range of 0.2 to 1 m/s, and this value is in line with the speed of current continuous casting equipment. The results are almost the same, and the pouring method of the present invention enables continuous casting of thin plates. Also,
When the surface roughness of the thin plate was measured, it was found to be 0.2 μm, which was a high surface roughness. This value reflects the surface roughness of the roll surface.
［実施例２］
本発明法で溶融金属に５ＫＤ−６１鋼を用い、ロール周
速のみ０．５ｍ／ｓ とし、他の製造条件は実施例１
と同じくし薄板を製造した。その結果、幅３００ｏｎ、
厚さ０．３ｍｍの薄板が製造できた。[Example 2] Using the method of the present invention, 5KD-61 steel was used as the molten metal, only the peripheral speed of the roll was 0.5 m/s, and the other manufacturing conditions were as in Example 1.
A thin plate was manufactured in the same manner. As a result, the width is 300 on,
A thin plate with a thickness of 0.3 mm could be manufactured.
薄板の面粗さは０．２μｍ と高面積度であった。The surface roughness of the thin plate was 0.2 μm, which was a high degree of area.
［実施例３］
本発明法で溶融金属に５ＫＨ−５７鋼を用い、ロール周
速のみ０ 、８ ｍ ／ ｓ とし、他の製造条件は
実施例１と同じくして薄板を製造した。その結果１幅３
００ｎｅ、厚さ０．２ａ＋＋７）薄板が製造テキた。薄
板の面粗さは０．２μｍと高面積度であった。[Example 3] A thin plate was manufactured using the method of the present invention using 5KH-57 steel as the molten metal, using only the peripheral speed of the roll at 0.8 m/s, and using the same manufacturing conditions as in Example 1. The result is 1 width 3
00ne, thickness 0.2a++7) thin plate was manufactured. The surface roughness of the thin plate was 0.2 μm, which was a high degree of surface area.
［実施例４〕 ゛本発明法で溶融金属に５ＫＤ−１１鋼を用い。[Example 4] ``5KD-11 steel is used as the molten metal in the method of the present invention.
ロール周速のみ０．７ｍ／ｓ とし、他の製造条件は
実施例１と同じくし薄板を製造した。その結果、幅３０
０ｍ、厚さ約０．３ｍの薄板が製造できた。A thin plate was manufactured under the same conditions as in Example 1 except that the peripheral speed of the roll was 0.7 m/s. As a result, the width is 30
A thin plate with a thickness of about 0.0 m and a thickness of about 0.3 m could be manufactured.
薄板の外観はほぼ金属光沢を示し、面粗さは０．２μｍ
であった。The appearance of the thin plate is almost metallic luster, and the surface roughness is 0.2 μm.
Met.
［実施例５コ
本発明法で溶融金属に５ＵＳ３０４鋼を用い、ロール周
速のみ０．５ｍ／ｓ とし、他の製造条件は実施例１
と同じくし薄板を製造した。但し、不活性ガス導入管よ
りＡｒを流した場合と、流さない場合とで薄板を製造し
、薄板の面精度を比較した。なお、実施例１〜４はすべ
てＡｒガスを流して製造したものである。その結果、Ａ
ｒガスを流さないで製造した薄板の外観は黒色のスケー
ルが発生し面精度が悪かった。第７図はＡｒガスを流し
て製造したものと、流さないで製造した薄板の表面から
の０＋イオンをＩＭＡで分析した結果を示す。Ａｒガス
を流した薄板はスパッタ時間約中分位から０＋イオンが
減少する傾向にあり、一方、Ａｒガスを流さないものは
この時間では全く減少する傾向がみられない、このこと
はＡｒガスを流した場合はごく表面のみ非常に薄い酸化
物が発生するが、流さない場合は大気にさらされるため
、厚いスケールが発生する。[Example 5] Using the method of the present invention, 5US304 steel was used as the molten metal, only the peripheral speed of the roll was 0.5 m/s, and the other manufacturing conditions were as in Example 1.
A thin plate was manufactured in the same manner. However, thin plates were manufactured with and without Ar flowing through the inert gas introduction pipe, and the surface precision of the thin plates was compared. In addition, Examples 1 to 4 were all manufactured by flowing Ar gas. As a result, A
The appearance of the thin plate manufactured without flowing r gas was that black scale was generated and the surface accuracy was poor. FIG. 7 shows the results of IMA analysis of 0+ ions from the surfaces of thin plates manufactured by flowing Ar gas and those manufactured without flowing Ar gas. The thin plate to which Ar gas was flowed has a tendency for 0+ ions to decrease from about the middle of the sputtering time, while the thin plate to which Ar gas was not flown shows no tendency to decrease at all during this time. If it is flushed, a very thin oxide is generated only on the surface, but if it is not flushed, it is exposed to the atmosphere and a thick scale forms.
本発明によれば溶融金属から直接高面精度の薄板が連続
的に製造できる。したがって、圧延→焼鈍→圧延のくり
かえしが省略でき低コスト化が期待される。According to the present invention, thin plates with high surface precision can be continuously manufactured directly from molten metal. Therefore, the repetition of rolling → annealing → rolling can be omitted, and cost reduction is expected.
第１図は本発明の一実施例の薄板の連続製造方法の説明
図、第２図は本発明の鋳込樋の鋳込口の正面図、第３図
は従来の薄板製造装置の説明図、第４図は従来の鋳込口
を示す図、第５図は従来装置で製造した薄板の板厚とロ
ール周速の関係を示す図、第６図は本発明装置で製造し
た薄板の板厚とロール周速の関係を示す図、第７図は薄
板表面からのＱ＋イオンのＩＭＡ分析結果を示す図であ
る。
１・・・取鍋、２・・・ストッパ、３・・・溶融金属、
４・・・鋳込樋、５・・・遮へい板、６・・・鋳込口、
７・・・オーバフロー用ノズル、８・・・溶鉛、９・・
・不活性ガス導入管、１０・・・主ロール、１１・・・
副ロール、１２・・・薄板、１３・・・油圧シリンダ、
１４・・・湯面センサ、１５・・・注湯制御器、１６・
・・副ロール。Fig. 1 is an explanatory diagram of a continuous thin plate manufacturing method according to an embodiment of the present invention, Fig. 2 is a front view of a casting spout of a casting trough of the present invention, and Fig. 3 is an explanatory diagram of a conventional thin plate manufacturing apparatus. , Fig. 4 is a diagram showing a conventional casting hole, Fig. 5 is a diagram showing the relationship between the thickness of a thin plate manufactured using the conventional device and the peripheral speed of the roll, and Fig. 6 is a diagram showing a thin plate manufactured using the device of the present invention. A diagram showing the relationship between thickness and roll circumferential speed, and FIG. 7 is a diagram showing the IMA analysis results of Q+ ions from the surface of the thin plate. 1... Ladle, 2... Stopper, 3... Molten metal,
4... Casting gutter, 5... Shielding plate, 6... Casting opening,
7... Overflow nozzle, 8... Molten lead, 9...
・Inert gas introduction pipe, 10... Main roll, 11...
Sub roll, 12... Thin plate, 13... Hydraulic cylinder,
14... Hot water level sensor, 15... Molten pouring controller, 16.
...Secondary role.
Claims (1)
の表面に鋳込樋の溶融金属を鋳込口から自然に前記鋳込
樋の前記溶融金属の上面と水平方向に流出させて巻上げ
た後、非接触で前記主ロールと同期して回転している内
部水冷構造の副ロール間にかみ込ませ、圧延して薄板を
連続的に製造することを特徴とする薄板の連続製造方法
。 ２、前記鋳込樋中に遮へい板を設け取鍋から前記溶融金
属を前記鋳込口とは反対の前記遮へい板側に落下させ、
前記遮へい板の下方の開口部から前記溶融金属を下注法
により前記鋳込口側へ流出させることを特徴とする特許
請求の範囲第１項記載の薄板の連続製造方法。 ３、前記鋳込樋の前記鋳込口側に不活性ガスを流し、前
記溶融金属の酸化を防止したことを特徴とする特許請求
の範囲第１項記載の薄板の連続製造方法。 ４、前記鋳込樋の前記鋳込口の反対側に前記溶融金属及
びスラグ流出口を設けたことを特徴とする特許請求の範
囲第１項記載の薄板の連続製造方法。[Claims] 1. The molten metal in the casting gutter is naturally flowed from the casting spout onto the surface of the main roll with an internal water-cooled structure that is rotating in a predetermined direction, parallel to the upper surface of the molten metal in the casting gutter. The method is characterized in that after being rolled up and rolled in a non-contact manner, the material is inserted between sub-rolls having an internal water-cooled structure rotating in synchronization with the main roll, and rolled to continuously produce a thin plate. Continuous manufacturing method for thin plates. 2. A shielding plate is provided in the casting gutter, and the molten metal is allowed to fall from the ladle to the shielding plate side opposite to the casting hole,
2. The continuous manufacturing method of a thin plate according to claim 1, wherein the molten metal is caused to flow out from a lower opening of the shielding plate to the casting port side by a pouring method. 3. The continuous manufacturing method of a thin plate according to claim 1, characterized in that an inert gas is flowed to the casting port side of the casting trough to prevent oxidation of the molten metal. 4. The continuous manufacturing method of a thin plate according to claim 1, characterized in that the molten metal and slag outlet is provided on the opposite side of the pouring hole of the casting gutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6561287A JPS63235047A (en) | 1987-03-23 | 1987-03-23 | Method of continuously producing thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6561287A JPS63235047A (en) | 1987-03-23 | 1987-03-23 | Method of continuously producing thin plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63235047A true JPS63235047A (en) | 1988-09-30 |
Family
ID=13292017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6561287A Pending JPS63235047A (en) | 1987-03-23 | 1987-03-23 | Method of continuously producing thin plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63235047A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2655579A1 (en) * | 1989-12-11 | 1991-06-14 | Siderurgie Fse Inst Rech | CONTINUOUS CASTING DEVICE FOR LIQUID METAL WITH TWO PARALLEL CYLINDERS WITH LATERAL SUPPLY. |
| EP1181997A1 (en) * | 2000-08-26 | 2002-02-27 | SMS Demag AG | Process and device for continuous casting of steel strip from molten steel |
-
1987
- 1987-03-23 JP JP6561287A patent/JPS63235047A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2655579A1 (en) * | 1989-12-11 | 1991-06-14 | Siderurgie Fse Inst Rech | CONTINUOUS CASTING DEVICE FOR LIQUID METAL WITH TWO PARALLEL CYLINDERS WITH LATERAL SUPPLY. |
| EP1181997A1 (en) * | 2000-08-26 | 2002-02-27 | SMS Demag AG | Process and device for continuous casting of steel strip from molten steel |
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