JPS60115305A - Method and installation for hot rolling thin sheet- material - Google Patents
Method and installation for hot rolling thin sheet- materialInfo
- Publication number
- JPS60115305A JPS60115305A JP22204983A JP22204983A JPS60115305A JP S60115305 A JPS60115305 A JP S60115305A JP 22204983 A JP22204983 A JP 22204983A JP 22204983 A JP22204983 A JP 22204983A JP S60115305 A JPS60115305 A JP S60115305A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- heating
- rolling
- hot
- rolled
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/68—Furnace coilers; Hot coilers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は連続鋳造素材より薄板材を熱間仕上圧延により
製造する場合、高品質な板幅端部をもつ（１）
薄板材を製造する熱間仕上圧延装置に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention provides a method for producing a thin plate material from a continuously cast material by hot finish rolling, which has a high quality plate width end. The present invention relates to a finishing rolling device.
従来、連鋳素材より熱間圧延により薄板材を製造する場
合、次のような問題があった。即ち、連鋳材は鋳造直後
に於いても１０５０〜１１５０℃と高温であるから、再
加熱なしに鋳造検素材を直接熱間圧延機に送り圧延され
る。Conventionally, when producing thin plate materials by hot rolling from continuously cast materials, there have been the following problems. That is, since the continuously cast material is at a high temperature of 1,050 to 1,150° C. even immediately after casting, the cast specimen is directly sent to a hot rolling mill and rolled without reheating.
このような圧延法により、再加熱エネルギが省略でき２
０〜３０万ＫｃｏΩ／製品トン程度の大幅な省エネルギ
化が可能となった。With this rolling method, reheating energy can be omitted.
Significant energy savings of approximately 0 to 300,000 KcoΩ/ton of product have become possible.
しかし、連鋳機により製造された素材は、板幅端の温度
が低く、このような素材を仕上圧延したのでは、板幅端
にエツジクラックと呼ばれる割れ、あるいは低温板幅端
の圧延による結晶組織の微細化によって硬度上昇が生じ
、板幅方向に一様な品質のものが得られない欠点があっ
た。However, the temperature of the material produced by a continuous casting machine is low at the width edge of the plate, and finishing rolling of such material results in cracks called edge cracks at the width edge of the plate, or crystals due to rolling at the cold edge of the plate. The refinement of the structure causes an increase in hardness, which has the disadvantage that uniform quality cannot be obtained in the width direction of the plate.
この連鋳素材の熱間仕上圧延前に於ける板厚は通常２０
〜５０ｍｍ、板幅は９００−１５００ｍｍ程度である。The plate thickness of this continuously cast material before hot finish rolling is usually 20 mm.
~50mm, and the plate width is about 900-1500mm.
この素材に於ける板幅方向の分布は、板幅中央（２）
部に対し、両板幅端では約１００〜３００％程度温度が
低下している。The temperature distribution of this material in the board width direction is approximately 100 to 300% lower at both ends of the board than at the center (2) of the board width.
このため、従来の熱間仕上薄板圧延では仕上圧延機の・
前方に、第１図あるいは第２図に示すようなエツジヒー
タと呼ばれる板幅端部の加熱装置が設けられている。For this reason, in conventional hot finishing thin plate rolling, the
At the front, a heating device for the edge of the plate width called an edge heater as shown in FIG. 1 or 2 is provided.
いずれのものも、第３図に示すような素材１のエツジ部
は仕上圧延機群１０により圧延されながらしかも、圧延
前にエツジヒータ８により加熱される。In either case, the edge portion of the material 1 as shown in FIG. 3 is heated by the edge heater 8 while being rolled by the finish rolling mill group 10.
圧延機群の前の素材の走行速度は通常５０〜８０ ｍ
／ ｍｍである。The running speed of the material in front of the rolling mill group is usually 50 to 80 m.
/ mm.
第１図に示すエツジヒータは高周波電源３を用いる高周
波加熱コイル２により素材１のエツジ部を加熱する。The edge heater shown in FIG. 1 heats the edge portion of a material 1 using a high frequency heating coil 2 using a high frequency power supply 3.
第２図のものは、バーナノズル６により噴出される炎７
により、素材１のエツジ部を加熱するものである。The one in FIG. 2 shows the flame 7 ejected by the burner nozzle 6.
This heats the edge portion of the material 1.
このような走行する素材のエツジ加熱法は次のような欠
点をもつ。This edge heating method for moving materials has the following drawbacks.
（３）
第１に走行する剛性の弱い板に対し、加熱体を近づける
ことは、板と加熱体の接触事故を生じさせるので通常加
熱体と被加熱体との距離は１００〜２００簡の大きな値
にとられるので、加熱効率が悪い。第２に走行する一枚
の板に対し加熱を行なうので、必然的に空気の流れを誘
発し、誘発された空気の流れにより加熱したエネルギが
奪われる。第３に素材１は走行しているので、加熱時間
を十分数ることが出来ず、十分な温度上昇を得るために
は狭いスペースに大きな発熱源が必要とする。しかし、
このように瞬時に支持エツジ部に熱を与えようとしても
表面のみは温度上昇するも、内部までの温度上昇は達成
されず、外部に熱は逃げてしまい効率の悪い加熱となっ
てしまう。(3) Firstly, bringing the heating body close to the running plate with low rigidity may cause an accident of contact between the plate and the heating body, so the distance between the heating body and the heated body is usually a large distance of 100 to 200 meters. Since it is taken as a value, heating efficiency is poor. Second, since heating is performed on a single traveling plate, air flow is inevitably induced, and the heated energy is absorbed by the induced air flow. Thirdly, since the material 1 is traveling, the heating time cannot be increased sufficiently, and in order to obtain a sufficient temperature rise, a large heat source is required in a narrow space. but,
Even if an attempt is made to instantaneously apply heat to the support edge portion in this way, only the surface temperature will rise, but the temperature rise to the inside will not be achieved, and the heat will escape to the outside, resulting in inefficient heating.
以上の理由から、従来のエツジヒータに必要とするエネ
ルギは、たかだかエツジ部を１００〜３００°Ｃ加熱す
るのに５〜１０万ＫｃｏＱ／ｆｆ品トンに及んでいた。For the above reasons, the energy required for the conventional edge heater was 50,000 to 100,000 KcoQ/ff to heat the edge portion to 100 to 300° C. at most.
本発明の目的は、効率の良い板幅端加熱を行な（４）
い、連鋳材の直接圧延を効果的に行ない得る圧延設備を
提供するにある。An object of the present invention is to provide rolling equipment that can perform efficient strip width edge heating (4) and effectively perform direct rolling of continuously cast material.
本発明では、連鋳材素材を仕上圧延前にコイル状に巻き
取り、且つ、巻戻しながら仕上圧延を行なう方法を採り
、コイル状となっている間にコイルの端面に熱エネルギ
を与え素材端部を加熱する。In the present invention, a method is adopted in which continuous cast material is wound into a coil shape before finish rolling, and finish rolling is performed while unwinding, and thermal energy is applied to the end surface of the coil while it is in the coil shape. heat the parts.
第５図、第６図に本発明の一実施例を示す。第５図に於
いて熱間仕上圧延機群３１に素材をコイル状にして連鋳
機から素材を供給する方法の例として次の二つの方法に
ついて説明する。An embodiment of the present invention is shown in FIGS. 5 and 6. Referring to FIG. 5, the following two methods will be described as examples of the method of supplying the raw material to the hot finishing mill group 31 from the continuous caster by forming the raw material into a coil shape.
第１の方法は連鋳機により板厚が２００へ３００ｍｎの
ように大きな素材スラブを作り、これを粗圧延機で圧延
した後コイルにする。この方法は第５図に於いて次のよ
うに実施される。タンディツシュ２０から連鋳機の鋳型
２１に溶液を連続的に供給し、連続鋳片２２を造形する
。この連続時用２２は所定の長さに切断され偏平状の熱
間鋼材スラブ２３が得られる。スラブの長さは通常（５
）
６〜１．２ｍ程度である。これを断熱帯２４に送り、多
少の均熱化交用を与える。然るのち、粗圧延機２６によ
りスラブ２３の板厚を２５〜５０＋ｎｍに減厚圧延する
。減厚圧延に先立ち、堅ロール圧延機２５により、しば
しば板幅方向の圧延が行なわれることも多い。In the first method, a large material slab with a thickness of 200 to 300 mm is made using a continuous casting machine, and after being rolled using a rough rolling mill, it is made into a coil. This method is implemented in FIG. 5 as follows. A solution is continuously supplied from a tundish 20 to a mold 21 of a continuous casting machine to form a continuous slab 22. This continuous use 22 is cut into a predetermined length to obtain a flat hot steel slab 23. The length of the slab is usually (5
) Approximately 6 to 1.2 m. This is sent to the insulation zone 24, where it is given some heat equalization. Thereafter, the slab 23 is rolled to a thickness of 25 to 50+ nm using a rough rolling mill 26. Prior to thickness reduction rolling, rolling in the width direction of the sheet is often performed by the hard roll rolling mill 25.
以上のようにして、減厚圧延した熱間仕上圧延素材３２
を巻取機３２でコイル２９に巻取る。このコイル２１は
コイル移相機５０によりコイル巻戻機２８に移送される
。コイル巻戻機からコイル３０は矢印方向に巻戻され、
ジ−ドパ状素材となって仕上圧延機群３１による、減厚
圧延後の板厚は１．６ 〜４．５ 膿となる。As described above, the hot finish rolled material 32 is rolled to reduce its thickness.
is wound into a coil 29 by a winding machine 32. This coil 21 is transferred to a coil unwinding machine 28 by a coil phase shifter 50. The coil 30 is unwound from the coil unwinding machine in the direction of the arrow.
The material becomes a J-Dopa-like material, and after being rolled to reduce its thickness by the finish rolling mill group 31, the thickness of the material becomes 1.6 to 4.5 mm.
さて、連鋳機から得られるスラブは板厚端部で冷却され
易く、低い温度となっている。このため、粗圧延後、素
材の板幅端の温度は第７図にハツチングで示すように、
板幅中央に対し約１５０〜３００°Ｃ程度低い。従って
、本発明では第５図に示すようなコイル２９巻取り、あ
るいは巻取った後のコイル３０を第６図に示すコイル端
部加熱装（６）
置により加熱する。第６図に於いて巻き取られるコイル
２９は軸受６１で支持されるローラ６０上で回転させら
れる。このコイル２９の端面ば、コイル両端面側に設け
られたコイル端面加熱装置６２により加熱される。即ち
、加熱バーナノズル６２に燃焼ガスが導管６３より供給
され、これにより得られた燃焼炎６５によりコイル端面
が加熱される。Now, a slab obtained from a continuous casting machine is easily cooled at the thick end portion, and has a low temperature. Therefore, after rough rolling, the temperature at the width end of the material is as shown by hatching in Figure 7.
About 150 to 300°C lower than the center of the board width. Therefore, in the present invention, the coil 29 is wound as shown in FIG. 5, or the coil 30 after being wound is heated by the coil end heating device (6) shown in FIG. The coil 29 being wound in FIG. 6 is rotated on rollers 60 supported by bearings 61. In FIG. The end faces of the coil 29 are heated by coil end face heating devices 62 provided on both end faces of the coil. That is, combustion gas is supplied to the heating burner nozzle 62 through the conduit 63, and the end face of the coil is heated by the combustion flame 65 obtained thereby.
コイルは薄い円管が重ねられた状態になっているから、
フィン効果が有り効率の良い加熱が可能となる。The coil is made up of thin circular tubes stacked on top of each other,
It has a fin effect and enables efficient heating.
また、第６図の側面図を第８図に示す。コイル端面加熱
装置６２には円周状に多数のバーナノズル６３を設置す
ることができ、かつ、コイル１９はローラ６０上を回転
しているからコイル端面の均一な加熱が可能である。勿
論、第６図に於ける加熱体は燃焼ガス法にたよらず高周
波コイル、第８図のバーナノズル６３の代りに設けても
同じような効果が得られる。このようにコイル端面は大
きな表面積をもち、かつ、加熱時間を長く取れる（７）
から効率的な加熱が可能となる。Further, a side view of FIG. 6 is shown in FIG. 8. A large number of burner nozzles 63 can be installed circumferentially in the coil end surface heating device 62, and since the coil 19 rotates on the roller 60, uniform heating of the coil end surface is possible. Of course, the heating element in FIG. 6 may be replaced by a high frequency coil or the burner nozzle 63 in FIG. 8 without relying on the combustion gas method, and the same effect can be obtained. In this way, the end face of the coil has a large surface area and the heating time can be extended (7), making efficient heating possible.
本発明では、コイルの巻取りを次に示すような別な手法
により行なうこともできる。第５図は、連鋳機により直
接仕−ヒ圧延機用の素材を作る場合を示す。In the present invention, the coil can also be wound by another method as shown below. FIG. 5 shows the case where a continuous caster is used to directly produce a raw material for a feed rolling mill.
このような素材は以下のようにして製造される。Such a material is manufactured as follows.
タンディシュ４０からの溶湯はガイドローラ４２でガイ
ドされるベルト４１で構成されるベルト鋳型に鋳込まれ
る。このようにして、２５〜３０ｎｗｎの板厚の素材４
４が製造される。この素材４４は断熱帯４５を通過した
後、巻取り機４７でコイル４６に巻き取られる。然るの
ち、矢印７０で示す経路で、巻戻機２８に移送され、前
述したのと同様に仕」二圧延される。The molten metal from the tundish 40 is cast into a belt mold made up of a belt 41 guided by guide rollers 42. In this way, a material 4 with a thickness of 25 to 30 nwn is prepared.
4 is produced. After passing through a heat insulation zone 45, this material 44 is wound into a coil 46 by a winder 47. Thereafter, it is transferred to the unwinding machine 28 along the path indicated by the arrow 70 and subjected to second rolling in the same manner as described above.
いずれにしても、本発明では一旦コイル状に巻いて加熱
を行なうものである。即ち、本発明のコイル端面の加熱
は第５図に於いて、巻取り機２７゜４７及び巻戻機２８
の位置のいずれか一方、または、各々の位置に於いて行
なうものである。コイルの大きさは内径１０００圃、外
径２０００〜３０００ ｎｕｎ程度（８）
である。コイル端面部へ加熱法は第６図ではコイルが形
成された後、加熱する場合に有利な大きなノズル６３で
加熱する場合を示しているが、勿論、巻取り巻戻しの作
業中に加熱することも可能である。In any case, in the present invention, the material is once wound into a coil shape and then heated. That is, the coil end face of the present invention is heated by the winder 27°47 and the unwinder 28 in FIG.
It is carried out at one or each of the positions. The size of the coil is approximately 1000 mm in inner diameter and 2000 to 3000 mm in outer diameter (8). As for the method of heating the end face of the coil, Fig. 6 shows a case in which heating is performed using a large nozzle 63 which is advantageous when heating the coil after it is formed, but of course heating can be performed during the winding and unwinding operations. is also possible.
第９図には加熱装置８■に多数のバーナノズル８２を装
置しておいて、コイル径が大きく形成されると共にバー
ナノズルに順次点火してゆき、燃焼炎８３により効率的
に加熱する方法を示す。この場合は、内層コイル端面の
加熱時間が長くなるので、十分な加熱温度になれば、加
熱を順次停止するば良い。FIG. 9 shows a method in which a large number of burner nozzles 82 are installed in the heating device 81, the coil diameter is formed large, and the burner nozzles are ignited one after another to achieve efficient heating by combustion flame 83. In this case, since the heating time of the end face of the inner layer coil becomes long, the heating may be stopped one by one once a sufficient heating temperature is reached.
第１０図に更に効率的なコイル端部加熱法を示す。即ち
、コイルの造成と共に加熱バーナ９２が移動して燃焼炎
９１により効率的に加熱を行なう。FIG. 10 shows a more efficient coil end heating method. That is, the heating burner 92 moves as the coil is created, and the combustion flame 91 efficiently heats the coil.
バーナ９２の昇降はバーナ９２を取り付けるアーチ９２
をナラ１−９３及びスクリュ９４よりなる昇降機構によ
りコイルの造成と共にコイル上端面に位置に絶えず追随
移動するものである。The burner 92 is raised and lowered by the arch 92 to which the burner 92 is attached.
As the coil is being formed, it is constantly moved to follow the position of the upper end surface of the coil by means of an elevating and lowering mechanism consisting of a nut 1-93 and a screw 94.
以上はコイル巻取り部に対する説明を行なった（９）
が、勿論コイルの巻戻しの場合には巻取りの逆方向の手
順で操作を行なえば良い。The above explanation has been given regarding the coil winding section (9), but of course, in the case of unwinding the coil, the operation can be performed in the reverse direction of winding.
本発明の加熱法ではコイルの巻取り、巻戻し時間は通常
６０〜９０ｓｅｃであるから十分な加熱時間が得られ、
従来の走行する場合のエツジヒータによる加熱時間２〜
５ ｓｅｃに比較し、十分な加熱が可能となる。In the heating method of the present invention, the coil winding and unwinding time is usually 60 to 90 seconds, so sufficient heating time can be obtained.
Heating time with edge heater when driving conventionally 2~
Compared to 5 seconds, sufficient heating is possible.
本発明のコイル端面加熱法により、加熱のためのエネル
ギは約１／１０でよく経済的な加熱が可能となった。ま
た、従来は圧延されながら走行している素材の端面を加
熱していたから、加熱不足が生じても、そのまま圧延を
継続する必要があり。The coil end face heating method of the present invention enables economical heating with only about 1/10 of the energy needed for heating. In addition, conventionally, the end face of the running material was heated while it was being rolled, so even if insufficient heating occurred, it was necessary to continue rolling.
このため、しばしば板幅端に割れ、あるいは悪い結晶組
織が生じたが、本発明では十分な加熱が可能であり、こ
のような製品事故は皆無となる。For this reason, cracks or bad crystal structures often occurred at the edges of the sheet width, but in the present invention, sufficient heating is possible and such product accidents are completely eliminated.
第１図は従来の高周波法によるエツジヒータの説明図、
第２図は従来のエツジヒータバーナによるエツジヒータ
の説明図、第３図は従来のエツジ（１０）
ヒータの配置図、第４図は第４図のコイル端面形状の模
式説明図、第５図は本発明のコイル端面加熱設備の配置
図、第６図はコイル端面加熱装置の説明図、第７図は素
材の板幅方向温度分布図、第８図は第６図の説明図、第
９図、第１０図はコイル端面加熱の他の実施例の説明図
である。
２９・・・コイル、６２・・・コイル端面加熱装置。
代理人 弁理士 高橋明夫
（１１）
箒１ｍ
第３ｍ
０
第４ｎ
も５０
も６圀
１６０
？＞’７［Ｄ
千８関Figure 1 is an explanatory diagram of an edge heater using the conventional high frequency method.
Fig. 2 is an explanatory diagram of an edge heater using a conventional edge heater burner, Fig. 3 is a layout diagram of a conventional edge (10) heater, Fig. 4 is a schematic explanatory diagram of the end face shape of the coil in Fig. 4, and Fig. 5 is an explanatory diagram of an edge heater using a conventional edge heater burner. A layout diagram of the coil end surface heating equipment of the present invention, FIG. 6 is an explanatory diagram of the coil end surface heating device, FIG. 7 is a temperature distribution diagram in the board width direction of the material, FIG. 8 is an explanatory diagram of FIG. 6, and FIG. 9 , FIG. 10 is an explanatory diagram of another embodiment of coil end face heating. 29... Coil, 62... Coil end surface heating device. Agent Patent attorney Akio Takahashi (11) Broom 1m No. 3m 0 No. 4n 50 No. 6 160? ＞'7[D 18th Seki
Claims (1)
圧延前に板状素材をコイル状に巻取り、かつ、前記コイ
ルを巻戻しながら熱間仕上圧延を行なうように圧延設備
を構成し、しかも被圧延材がコイル状に保持されている
期間に、前記被圧延材の板幅端を加熱した後に熱間仕上
圧延を行なうことを特徴とする熱間薄板材の圧延方法。 ２、被熱間圧延素材を熱間仕上圧延設備の前方に於いて
コイル状に巻取る装置及び巻戻す装置を設け、これらの
装置のいずれか一方あるいは両者に、コイル幅端部の加
熱を行なう加熱装置を設備したことを特徴とする熱間薄
板材の圧延設備。[Claims of Claims] 1. In an apparatus for manufacturing hot thin plates by rolling, a plate material is wound into a coil shape before finishing hot rolling, and hot finishing rolling is performed while unwinding the coil. A hot thin plate material characterized in that the rolling equipment is configured as follows, and hot finish rolling is performed after heating the width end of the material to be rolled while the material to be rolled is held in a coiled shape. rolling method. 2. A device for winding the hot-rolled material into a coil shape and a device for unwinding it in front of the hot finishing rolling equipment are provided, and one or both of these devices heats the width end portion of the coil. Hot rolling equipment for thin sheet materials, characterized by being equipped with a heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22204983A JPS60115305A (en) | 1983-11-28 | 1983-11-28 | Method and installation for hot rolling thin sheet- material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22204983A JPS60115305A (en) | 1983-11-28 | 1983-11-28 | Method and installation for hot rolling thin sheet- material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60115305A true JPS60115305A (en) | 1985-06-21 |
Family
ID=16776291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22204983A Pending JPS60115305A (en) | 1983-11-28 | 1983-11-28 | Method and installation for hot rolling thin sheet- material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60115305A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793168A (en) * | 1986-04-14 | 1988-12-27 | Hitachi, Ltd. | Method of and apparatus for effecting a thickness-reduction rolling of a hot thin plate material |
| JPH09225516A (en) * | 1996-02-20 | 1997-09-02 | Ishikawajima Harima Heavy Ind Co Ltd | End face heating device of coiled coiling body |
| JPH09271841A (en) * | 1996-04-03 | 1997-10-21 | Chugai Ro Co Ltd | Heating method for rough rolling coil and coil heating device in coil box |
| JPH1080723A (en) * | 1996-09-06 | 1998-03-31 | Ishikawajima Harima Heavy Ind Co Ltd | Coil end face heating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52109464A (en) * | 1976-03-10 | 1977-09-13 | Nippon Steel Corp | Continuous casting continuous hot rolling device train |
-
1983
- 1983-11-28 JP JP22204983A patent/JPS60115305A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52109464A (en) * | 1976-03-10 | 1977-09-13 | Nippon Steel Corp | Continuous casting continuous hot rolling device train |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793168A (en) * | 1986-04-14 | 1988-12-27 | Hitachi, Ltd. | Method of and apparatus for effecting a thickness-reduction rolling of a hot thin plate material |
| JPH09225516A (en) * | 1996-02-20 | 1997-09-02 | Ishikawajima Harima Heavy Ind Co Ltd | End face heating device of coiled coiling body |
| JPH09271841A (en) * | 1996-04-03 | 1997-10-21 | Chugai Ro Co Ltd | Heating method for rough rolling coil and coil heating device in coil box |
| JPH1080723A (en) * | 1996-09-06 | 1998-03-31 | Ishikawajima Harima Heavy Ind Co Ltd | Coil end face heating device |
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