JPH062285B2 - Local cooling prevention method for rough rolled material in continuous hot rolling line - Google Patents

Local cooling prevention method for rough rolled material in continuous hot rolling line

Info

Publication number
JPH062285B2
JPH062285B2 JP59213830A JP21383084A JPH062285B2 JP H062285 B2 JPH062285 B2 JP H062285B2 JP 59213830 A JP59213830 A JP 59213830A JP 21383084 A JP21383084 A JP 21383084A JP H062285 B2 JPH062285 B2 JP H062285B2
Authority
JP
Japan
Prior art keywords
rolled material
rough rolled
cradle
rough
coil
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 - Lifetime
Application number
JP59213830A
Other languages
Japanese (ja)
Other versions
JPS6192706A (en
Inventor
美幸 沖田
昭夫 新城
勉 上野
善紀 今井
正海 沖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP59213830A priority Critical patent/JPH062285B2/en
Publication of JPS6192706A publication Critical patent/JPS6192706A/en
Publication of JPH062285B2 publication Critical patent/JPH062285B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085—Joining ends of material to continuous strip, bar or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Metal Rolling (AREA)

Description

【発明の詳細な説明】 （イ）産業上の利用分野 本発明は、先行圧延材の後端と後行圧延材の先端と順次
接合して連続的に圧延する連続熱間圧ラインにおける粗
圧延材の局部冷却を防止する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to rough rolling in a continuous hot rolling line in which a trailing edge of a preceding rolled material and a leading edge of a trailing rolled material are sequentially joined and continuously rolled. The present invention relates to a method for preventing local cooling of a material.

（ロ）従来技術 近年、通板性の向上、スクラップ・ロスの減少、作業能
率の向上を図るために、連続熱間圧延が提案されてい
る。この連続熱間圧延は、粗圧延機と仕上圧延機との間
で、先行圧延材の後端部と後行圧延材の先端部と溶接等
によって接合して仕上圧延を連続して行うものである。(B) Conventional technology In recent years, continuous hot rolling has been proposed in order to improve stripability, reduce scrap loss, and improve work efficiency. In this continuous hot rolling, the finish rolling is continuously performed by joining the trailing end of the preceding rolled material and the leading end of the trailing rolled material by welding or the like between the rough rolling mill and the finish rolling mill. is there.

従来の代表的な連続熱間圧延ラインにおいては、粗圧延
材（図示せず）で圧延された粗圧延材は、一旦巻取機に
コイル状に巻き取られずに、粗圧延材のコイルは、接合
機に送られて、先行材の後端部と後行材の先端部とが接
合され、ルーパをかいして仕上圧延機に連続的に送られ
る。In a conventional typical continuous hot rolling line, a rough rolled material rolled by a rough rolled material (not shown) is not once wound into a coil by a winder, but the coil of the rough rolled material is The trailing end portion of the preceding material and the leading end portion of the following material are joined to the joining machine, passed through the looper, and continuously fed to the finish rolling machine.

このような連続熱間圧延ラインにおいては、接合機で圧
延材を接合する場合に、圧延材を短時間（約１０秒程
度）静止させることになる。このとき、圧延材はピンチ
・ローラ、テーブル・ローラ、クランパ等に挟み付けら
れたまま停止をしているので、圧延材は局部的に冷却さ
れる（約１５０〜２００℃程度以下）。この局部冷却に
よって仕上圧延時に圧延材の厚みおよび幅の寸法精度の
低下ならびに品質の低下を招くことになる。In such a continuous hot rolling line, when a rolled material is joined by a joining machine, the rolled material is kept stationary for a short time (about 10 seconds). At this time, the rolled material is stopped while being pinched by pinch rollers, table rollers, clampers, etc., so that the rolled material is locally cooled (about 150 to 200 ° C. or less). Due to this local cooling, the dimensional accuracy of the thickness and width of the rolled material and the quality of the rolled material are reduced during finish rolling.

（ハ）発明が解決しようとする問題点 本発明が解決しようとする問題点は、連続熱間圧延ライ
ンにおいて、接合機による圧延材の接合のさいに、圧延
材に局部的冷却を生じさせないことにある。(C) Problems to be Solved by the Invention A problem to be solved by the present invention is that in a continuous hot rolling line, when the rolled materials are joined by a joining machine, local cooling of the rolled material is not caused. It is in.

（ニ）問題点を解決するための手段 本発明の粗圧延材の局部冷却防止方法は、連続熱間圧延
ラインにおいて、粗圧延材の出側と仕上圧延機の入側と
の間にインラインコイラを設けて粗圧延材をコイル状に
巻き取ること、該インラインコイラの出側に少なくとも
２台のクレードルを設けること、該クレードルによって
前記コイルを巻き戻しながら粗圧延材を前記仕上圧延機
に送り出すこと、前記クレードルの出側に接合機を設け
て先行圧延材の後端と後行粗圧延材の先端とを順次接合
すること、前記接合機の出側にルーパを設けて粗圧延材
の送り量を調節すること、ならびに前記クレードルと前
記ルーパとの間に配置されているピンチ・ローラおよび
テーブル・ローラに断熱材コーティングを施すことによ
って、上記問題点を解決している。(D) Means for Solving the Problems The method for preventing local cooling of a rough rolled material of the present invention is an in-line coil between the outlet side of a rough rolled material and the inlet side of a finishing rolling mill in a continuous hot rolling line. A coil to wind the rough rolled material into a coil, at least two cradles are provided on the outlet side of the in-line coiler, and the rough rolled material is applied to the finish rolling machine while rewinding the coil by the cradle. Sending out, a joining machine is provided on the exit side of the cradle to sequentially join the trailing end of the preceding rolled material and the leading end of the trailing rough rolled material, and a looper is provided on the exit side of the joining machine for the rough rolled material. The problem is solved by adjusting the feed rate and by applying a thermal insulation coating to the pinch rollers and table rollers located between the cradle and the looper.

本発明は、さらに前記連続熱間圧延ラインにおいて、前
記クレードルと前記ルーパとの間で粗圧延材を取り囲む
保温板を随所に設け、断熱材コーティングに合せて保温
板による包囲によってより一層の局部冷却防止を図るこ
とができる。The present invention further provides, in the continuous hot rolling line, a heat insulating plate surrounding the rough rolled material between the cradle and the looper in various places, and further local cooling is achieved by surrounding the heat insulating plate with the heat insulating material coating. It can be prevented.

（ホ）実施例 第１図を参照して本発明の方法の実施例について説明す
る。本発明の方法が適用される連続熱間圧延ラインにお
いては、粗圧延機（図示せず）で圧延された粗圧延材５
は、インラインコイラ１にコイル状に巻き取られる。粗
圧延材５のコイル２は、トランスファアーム１１等によ
ってインラインコイラ１からクレードル３上に移し換え
られ、そこから巻き戻されて接合機４に送られる。接合
機４では先行材５ａの後端部と後行材５ｂの先端部とが
接合され、ルーパ６をかいして仕上圧延機（図示せず）
に連続的に送られる。図において、参照番号７はピンチ
・ローラ、８はテーブル・ローラ、９はクランパであ
る。図示実施例においては、２台のクレードル３間のコ
イル２の受渡しも別のトランスファアーム１１等によっ
て行われる。(E) Embodiment An embodiment of the method of the present invention will be described with reference to FIG. In a continuous hot rolling line to which the method of the present invention is applied, a rough rolled material 5 rolled by a rough rolling mill (not shown)
Is coiled around the in-line coiler 1. The coil 2 of the rough rolled material 5 is transferred from the in-line coiler 1 to the cradle 3 by the transfer arm 11 or the like, rewound from there and sent to the joining machine 4. In the joining machine 4, the trailing end portion of the preceding material 5a and the leading end portion of the trailing material 5b are joined together, and the looper 6 is inserted to finish the rolling mill (not shown).
Sent continuously to. In the figure, reference numeral 7 is a pinch roller, 8 is a table roller, and 9 is a clamper. In the illustrated embodiment, the transfer of the coil 2 between the two cradle 3 is also performed by another transfer arm 11 or the like.

一般に、厚物（例えば、板厚３．２mm）の成品圧延材で
は仕上圧延、巻取等の処理時間が短かく、他方、薄物
（例えば、板厚１．６mm）の成品圧延材では処理時間が
長くなる。一方、スラブ加熱炉からは１−２分の一定ピ
ッチで規則定しく加熱スラブが粗圧延機に送られてきて
インラインコイラ１に巻き取られている。そして、従来
のルーパ６の貯留能力は最大２０秒程度である。Generally, the processing time for finish rolling, winding, etc. is short for a thick rolled product (for example, plate thickness 3.2 mm), while the processing time for a thin rolled product (for example, plate thickness 1.6 mm) is short. Becomes longer. On the other hand, the heating slab is regularly sent from the slab heating furnace to the rough rolling mill at a constant pitch of 1-2 minutes and wound around the inline coiler 1. The storage capacity of the conventional looper 6 is about 20 seconds at maximum.

もしクレードル３が１台のみである場合には、処理時間
が長すぎるとルーパ６で圧延材を吸収できなくなり、ま
た、処理時間が短かすぎるとルーパ６の貯留量容量が足
りず、次の材料が送られてくる前に材料が通過してしま
い接合機４での材料の接合が不可能になる。If there is only one cradle 3, if the treatment time is too long, the rolled material cannot be absorbed by the looper 6, and if the treatment time is too short, the storage capacity of the looper 6 is insufficient, and The material passes through before the material is sent, and the material cannot be bonded by the bonding machine 4.

そこで、本発明の方法では、クレードル３を少なくとも
２台設けて、ルーパ６では不十分なバッファ機能をクレ
ードル３に分担させ、両者を総合して、いかなる条件の
材料をも接合可能にしている。Therefore, in the method of the present invention, at least two cradle 3 are provided so that the cradle 3 has a buffer function that is insufficient with the looper 6, and the cradle 3 is combined so that materials under any conditions can be joined.

本発明は、粗圧延機で、できるだけ、板厚を薄くするこ
とにより、次工程の仕上圧延機のスタンド数を減らし、
コンパクトな圧延機にする効果を狙っている。粗圧延材
の板厚が薄くなると、材料の温度が低下し次工程の仕上
圧延時に所要の仕上圧延温度以下に低下する危険がある
（機械特性の低下、形状不良等が発生する。）。したが
って、粗圧延後すみやかに、コイル状の巻戻り、コイル
自体の自己保有熱で、コイル温度の低下を防止するため
に、インラインコイラを設ける必要がある。The present invention, in the rough rolling mill, by reducing the plate thickness as much as possible, reduce the number of stands of the finish rolling mill in the next step,
Aiming at the effect of making a compact rolling mill. When the plate thickness of the rough rolled material becomes thin, there is a risk that the temperature of the material decreases and the finish rolling temperature in the next step falls below the required finish rolling temperature (mechanical properties decrease, defective shape, etc. occur). Therefore, it is necessary to provide an in-line coiler in order to prevent the coil temperature from being rapidly lowered after the rough rolling and to prevent the coil temperature from lowering due to the self-held heat of the coil itself.

本発明の方法においては、クレードル３とルーパ６との
間に配置されているピンチ・ロール７およびテーブ・ロ
ーラ８に断熱材コーティングを施す。断熱材としては、
アルミナ（Ａｌ２Ｏ３）、ジルコニア（ＺｒＯ２）、硫
化クロム（Ｃｒ２Ｏ３）、炭化タングステン（ＷＣ）、
またはこれらの混合物を利用することができる。In the method of the present invention, the pinch roll 7 and the tape roller 8 arranged between the cradle 3 and the looper 6 are coated with a heat insulating material. As a heat insulating material,
Alumina (Al 2 O 3 ), zirconia (ZrO 2 ), chromium sulfide (Cr 2 O 3 ), tungsten carbide (WC),
Alternatively, a mixture of these can be used.

断熱材のコーティング方法としては、第２図に示すよう
に、ロール表面全体にコーティングをする方法（Ａ）、
一定の間隔をあけてコーティングする方法（Ｂ）、一定
のピッチでら旋状にコーティングする方法（Ｃ）、また
は千鳥状にコーティングする方法（Ｄ）がある。As a method of coating the heat insulating material, as shown in FIG. 2, a method of coating the entire roll surface (A),
There are a method of coating at a constant interval (B), a method of spirally coating at a constant pitch (C), and a method of staggered coating (D).

クランパ９による局部冷却を防止すために、クランパ９
の把持面に断熱材を設けることが好ましい。In order to prevent local cooling by the clamper 9, the clamper 9
It is preferable to provide a heat insulating material on the grip surface.

さらに、本発明の方法においては、第３図に示すよう
に、クレードル３とルーパ６（第１図）との間で粗圧延
材を取り囲む保温板１０を随所に設ける。保温材として
は、成形耐熱ボード、ロックウール成品、不定形耐火物
等を利用することができる。Further, in the method of the present invention, as shown in FIG. 3, a heat insulating plate 10 surrounding the rough rolled material is provided between the cradle 3 and the looper 6 (FIG. 1) everywhere. As the heat insulating material, a molded heat resistant board, a rock wool product, an irregular shaped refractory, or the like can be used.

保温板１０は、粗圧延材の上下に設けるだけでも十分で
あるが、粗圧延材の左右すなわち側面にも設けることに
よって保温効果を上げることができる。保温板１０の粗
圧延材のガイドとしての働きもする。Although it is sufficient to provide the heat insulating plates 10 above and below the rough rolled material, the heat insulating effect can be improved by providing the heat insulating plates 10 on the right and left sides of the rough rolled material. It also functions as a guide for the rough rolled material of the heat insulating plate 10.

本発明の方法においては、断熱材のコーティング法と併
せて保温板使用法を組み合わせることによって、より一
層効果的な局部冷却の防止を行うことがでる。In the method of the present invention, it is possible to prevent local cooling more effectively by combining the method of using the heat insulating plate with the method of coating the heat insulating material.

（ヘ）効果 本発明の方法を従来法と比較した場合、次の効果が得ら
れる。(F) Effects The following effects are obtained when the method of the present invention is compared with the conventional method.

従来法では１５０〜２００℃の局部冷却が生じてい
たが、本発明の断熱材コーティング法によれば１０〜３
０℃に低減でき、保温板使用法によれば、２０〜４０℃
に低減でき、その両者を併用した方法によれば１０〜２
０℃に低減することができた。その結果、成品の幅およ
び寸法精度の向上ならびに品質の均質化を図ることがで
きる。In the conventional method, local cooling of 150 to 200 ° C. occurs, but according to the heat insulating material coating method of the present invention, 10 to 3 is used.
Can be reduced to 0 ° C, and according to the method of using the heat insulating plate, 20 to 40 ° C
Can be reduced to 10 to 2 according to the method using both of them together.
It could be reduced to 0 ° C. As a result, the width and dimensional accuracy of the product can be improved and the quality can be homogenized.

本発明は、粗圧延機で、できるだけ板厚の薄いコイ
ルを製造することにより、次工程の仕上圧延機のスタン
ド数を少なくしコンパクトミル化を図ることができる。INDUSTRIAL APPLICABILITY The present invention can reduce the number of stands of the finish rolling mill in the next step and realize a compact mill by producing a coil having a plate thickness as thin as possible in the rough rolling mill.

粗圧延機で、板厚を薄くしても、粗圧延後の粗圧延
材をインラインコイラにて、コイル状に巻き取るため、
コイル温度の低下は生じない。Even if the plate thickness is thin with a rough rolling mill, the rough rolled material after rough rolling is wound into a coil with an in-line coiler.
The coil temperature does not drop.

ミルコンパクト化を図るため、簡易ルーパ６を採用
したが、このルーパだけでは、コイル消化量の調整に対
応できなくなることもありうる。それはクレードルを２
台以上設置することで、ミル全体としてはコイル消化量
に十分対応できる。Although the simple looper 6 is adopted in order to achieve a compact mill, the looper alone may not be able to cope with the adjustment of the coil digestion amount. It's a cradle 2
By installing more than one stand, the mill as a whole can sufficiently cope with the amount of coil digestion.

上記に加えて、接合機４にて薄板の状態で前後のコ
イルを接合するため、板の接合が容易かつ確実に実施で
き、熱間圧延を連続化できる。In addition to the above, since the front and rear coils are joined in a thin plate state by the joining machine 4, the joining of the plates can be performed easily and reliably, and hot rolling can be continuous.

その際、上記の理由により、コイル温度の局部冷
却も防止できる。At that time, local cooling of the coil temperature can be prevented for the above reason.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の方法を実施する連続熱間圧延設備の概
略説明図。第２図は第１図に示す設備に用いるピンチ・
ローラまたはテーブル・ローラの斜視図。第３図は本発
明の方法を実施する別の連続熱間圧延設備の概略説明
図。 １：インラインコイラ ２：コイル ３：クレードル ４：接合機 ５ａ：先行材 ５ｂ：後行材 ６：ルーパ ７：ピンチ・ローラ ８：テーブル・ローラ ９：クランパ １０：保温板 １１：トランスファアームFIG. 1 is a schematic explanatory view of a continuous hot rolling facility for carrying out the method of the present invention. Fig. 2 shows the pinch used for the equipment shown in Fig. 1.
FIG. 3 is a perspective view of a roller or a table roller. FIG. 3 is a schematic explanatory view of another continuous hot rolling facility for carrying out the method of the present invention. 1: In-line coiler 2: Coil 3: Cradle 4: Joiner 5a: Leading material 5b: Trailing material 6: Looper 7: Pinch roller 8: Table roller 9: Clamper 10: Heat insulating plate 11: Transfer arm

フロントページの続き (72)発明者 今井 善紀 茨城県鹿島郡鹿島町大字光３番地 住友金 属工業株式会社鹿島製鉄所内 (72)発明者 沖 正海 茨城県鹿島郡鹿島町大字光３番地 住友金 属工業株式会社鹿島製鉄所内 (56)参考文献 特開 昭49−122872（ＪＰ，Ａ) 特開 昭52−57040（ＪＰ，Ａ) 特開 昭57−109504（ＪＰ，Ａ) 特開 昭58−179505（ＪＰ，Ａ) 特開 昭59−129410（ＪＰ，Ａ) 特開 昭59−45018（ＪＰ，Ａ)Front page continuation (72) Inventor Yoshinori Imai, 3rd light, Oshima, Kashima-machi, Kashima-gun, Ibaraki Sumitomo Metal Industries, Ltd. (72) Masami Oki, 3rd light, Oshima, Kashima-machi, Kashima-gun, Ibaraki Prefecture Industrial Co., Ltd. Kashima Steel Works (56) Reference JP-A-49-122872 (JP, A) JP-A-52-57040 (JP, A) JP-A-57-109504 (JP, A) JP-A-58-179505 (JP, A) JP 59-129410 (JP, A) JP 59-45018 (JP, A)

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】連続熱間圧延ラインにおいて、粗圧延機の
出側と仕上圧延機の入側との間にインラインコイラを設
けて粗圧延材をコイル状に巻き取ること、該インライン
コイラの出側に少なくとも２台のクレードルを設けるこ
と、該クレードルによって前記コイルを巻き戻しながら
粗圧延材を前記仕上延機に送り出すこと、前記クレード
ルの出側に接合機を設けて先行圧延材の後端と後行粗圧
延材の先端とを順次接合すること、前記接合機の出側に
ルーパを設けて粗圧延材の送り量を調節すること、なら
びに前記クレードルと前記ルーパとの間に配置されてい
るピンチ・ローラおよびテーブル・ローラに断熱材コー
ティングを施すことからなる粗圧延材の局部冷却防止方
法。1. In a continuous hot rolling line, an in-line coiler is provided between an exit side of a rough rolling mill and an inlet side of a finishing rolling mill to wind a rough rolled material into a coil. At least two cradles are provided on the output side of the, the coil is rewound by the cradle to feed the rough rolled material to the finish rolling machine, and a joining machine is provided on the output side of the cradle so that the Sequentially joining the end and the tip of the trailing rough rolled material, providing a looper on the exit side of the joining machine to adjust the feed amount of the rough rolled material, and arranged between the cradle and the looper. A method for preventing local cooling of rough rolled material by applying a heat insulating material coating to the pinch rollers and table rollers that are installed. 【請求項２】連続熱間圧延ラインにおいて、粗圧延機の
出側と仕上圧延機の入側との間にインラインコイラを設
けて粗圧延材をコイル状に巻き取ること、該インライン
コイラの出側に少なくとも２台のクレードルを設けるこ
と、該クレードルによって前記コイルを巻き戻しながら
粗圧延材を前記仕上圧延機に送り出すこと、前記クレー
ドルの出側に接合機を設けて先行圧延材の後端と後行粗
圧延材の先端とを順次接合すること、前記接合機の出側
にルーパを設けて粗圧延材の送り量を調節すること、前
記クレードルと前記ルーパとの間に配置されているピン
チ・ローラおよびテーブル・ローラに断熱材コーティン
グを施すこと、ならびに前記クレードルと前記ルーパと
の間で粗圧延材を取り囲む保温板を随所に設けることか
らなる粗圧延材の局部冷却防止方法。2. A continuous hot rolling line, wherein an in-line coiler is provided between the exit side of the rough rolling mill and the entry side of the finishing rolling mill to wind the rough rolled material into a coil. At least two cradles are provided on the output side of the coil, the rough rolled material is sent out to the finish rolling machine while the coil is rewound by the cradle, and a joining machine is provided on the output side of the cradle so that the Sequentially joining the end and the leading end of the trailing rough rolled material, providing a looper on the exit side of the joining machine to adjust the feed amount of the rough rolled material, and being disposed between the cradle and the looper. A heat-insulating material coating is applied to the pinch roller and the table roller, and a heat insulating plate surrounding the rough rolled material is provided everywhere between the cradle and the looper. Part cooling prevention method.
JP59213830A 1984-10-12 1984-10-12 Local cooling prevention method for rough rolled material in continuous hot rolling line Expired - Lifetime JPH062285B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59213830A JPH062285B2 (en) 1984-10-12 1984-10-12 Local cooling prevention method for rough rolled material in continuous hot rolling line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59213830A JPH062285B2 (en) 1984-10-12 1984-10-12 Local cooling prevention method for rough rolled material in continuous hot rolling line

Publications (2)

Publication Number Publication Date
JPS6192706A JPS6192706A (en) 1986-05-10
JPH062285B2 true JPH062285B2 (en) 1994-01-12

Family

ID=16645732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59213830A Expired - Lifetime JPH062285B2 (en) 1984-10-12 1984-10-12 Local cooling prevention method for rough rolled material in continuous hot rolling line

Country Status (1)

Country Link
JP (1) JPH062285B2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835681A (en) * 1973-03-16 1974-09-17 Wean United Inc Continuous rolling mill
JPS5257040A (en) * 1975-11-07 1977-05-11 Hitachi Ltd Method of connecting forward end to rear ends of strip
JPS57109504A (en) * 1980-12-26 1982-07-08 Kawasaki Steel Corp Method for joining sheet bar in continuous hot rolling installation
GB2117486A (en) * 1982-03-31 1983-10-12 British Steel Corp Ceramic coated rolls
JPS5945018A (en) * 1982-09-08 1984-03-13 Sumitomo Metal Ind Ltd Manufacture of hot-rolled steel sheet having small amount of scale
JPS59129410U (en) * 1983-02-22 1984-08-31 住友金属工業株式会社 hot rolling equipment

Also Published As

Publication number Publication date
JPS6192706A (en) 1986-05-10

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