JPS60231502A - Method and device for joining rolling steel materials in hot rolling - Google Patents

Abstract

PURPOSE:To join the front and rear ends of rolling members with high joint strength by providing a gap between the joining members, closing the base and side faces of the gap by a refractory member and pouring a molten metal into the formed recess. CONSTITUTION:A joining device 3 is moved in conformity with the conveying speed of rolling steel materials 1, 2. Both ends of the preceding and succeeding materials 1, 2 are imposed on a table 4 consisting of a refractory member and is brought into proximity to each other in a way as to have the gap 10. Cylinders 5 are actuated to move side faces blocks 6, 6 consisting of refractory members and are pressed to both side faces of the materials 1, 2 to close the gap 10. The base of the gap 10 is closed by the table 4 to form the recess. The molten steel 7 in a ladle 8 is poured into the recess in this state to melt partly the preceding and succeeding end faces of the two materials 1, 2. The molten part is cooled, by which the two materials 1, 2 are joined. The efficient continuous hot rolling is executed by the above-mentioned joining method.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、熱間圧延ラインにおいて、先行圧延材と後行
圧延材を接合して連続化させる方法および装置に関する
、 〔従来技術〕 従来、鋼材を順次連続的に熱間圧延して板状製品を製造
するにあたっては、単位長さの・綱材を１本毎に間欠的
に圧延機に供給してい友。ところが、このような間欠的
操業の場合、生産性が低い、歩留が悪贋等種々の問題が
ちつ１ζ。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method and an apparatus for joining and making continuous a preceding rolled material and a subsequent rolled material in a hot rolling line. [Prior Art] Conventionally, steel materials In order to manufacture plate-shaped products by sequentially and continuously hot-rolling steel strips, each unit length of rope is intermittently fed to the rolling mill. However, in the case of such intermittent operation, there are various problems such as low productivity and poor yield.

この友め、それを解決する手段として、近年、先行する
圧延材の後端部と後行する圧延材の先端部を汲合し、圧
延材を連続化させて圧延機に導入する方法が根案されて
いる。In recent years, as a means to solve this problem, a method has become popular in which the trailing end of the leading rolled material and the leading end of the trailing rolled material are brought together to make the rolled material continuous and then introduced into the rolling mill. It is being proposed.

その−例として、両正延材の先後端部を重ね会わせ、そ
の合わせ目を仮付溶接して、圧延機に導入するようＨｃ
４，２ものがある（特公昭５４−３９１９４号公報）が
、この場合、技術的な問題からアーク溶接などにニジ接
合部の周部しか仮付溶接ｌ〜ないことから、特に板厚が
大きい場合、仮接合強度が十分とれないという問題があ
る６〔発明の目的〕 本発明は、上記事情に鑑み、従来方法では得られない高
い接合強度を得ることができる圧延鋼材の接合方法、お
よびその方法を実施する九めの装置を提供することを目
的とする。As an example, the leading and trailing ends of both rolled materials are overlapped, the seam is tack welded, and the Hc
There are 4 and 2 types (Japanese Patent Publication No. 54-39194), but in this case, due to technical problems, only the periphery of the rainbow joint is tack welded by arc welding, so the plate thickness is particularly large. 6 [Object of the Invention] In view of the above circumstances, the present invention provides a method for joining rolled steel materials that can obtain high joint strength that cannot be obtained by conventional methods, and a method for joining rolled steel materials using the method. The object is to provide a ninth apparatus for carrying out the method.

〔発明の構成〕[Structure of the invention]

本発明の方法は、鋼材を熱間圧延するに際し、粗圧延工
程前もしくは仕１よ圧延工程前の段階で、先行圧延鋼材
の後端部と後行圧延鋼材の先端部を、互いの間に間隙を
もｔせて近接させるとともに、該間隙の底面シエび側面
を耐火性を有する部材で４いで、それによって形成され
る凹所に溶鋼を注ぎ込み、両圧延鋼材の一部を溶融させ
、あるいは昇温させることに工り接合するようにし交点
に特徴を有する。In the method of the present invention, when hot rolling a steel material, the trailing end of the preceding rolled steel material and the leading end of the following rolling steel material are placed between each other at a stage before the rough rolling process or before the finish rolling process. They are brought close to each other with a gap, and the bottom and side surfaces of the gap are covered with a fire-resistant member, and molten steel is poured into the recess formed thereby to melt a part of both rolled steel materials, or The intersection point is characterized by the process of joining by increasing the temperature.

また、上記方法を実施する友めの本発明装置は、搬送さ
れる圧延鋼材とともに移動可能な耐火性を有するテーブ
ルと、このテーブル上に載せられる両圧延鋼材間の間隙
の細面を塞ぐ耐火性を有する側面ブロックと、このブロ
ックを前記間隙を塞ぐ位置に移動させ友シ、その位置か
ら離れるよう移動させたシするブロック移動機構と、前
記間隙に対して溶鋼を注ぎ込む溶鋼注入装置とから構成
されるものである。In addition, a companion device of the present invention for carrying out the above method includes a fire-resistant table that is movable together with the rolled steel material being transported, and a fire-resistant table that closes the narrow surface of the gap between both rolled steel materials placed on the table. a side block, a block moving mechanism that moves the block to a position that closes the gap, and a block moving mechanism that moves the block away from that position, and a molten steel injection device that pours molten steel into the gap. It is something.

〔実施例〕〔Example〕

図面を参照して本発明の詳細な説明 する。図中１は先行圧延鋼材、２は後 行圧＃ｉ横材であり、これら千延鋼材１，２は粗圧延さ
れに後、あるいは連鋳機から搬送されて、仕上ＩＥ＋ｆ
ｆｉ機に向って矢印（イ）の如く移動している。そして
、この工うに…痣鋼材１．２を搬送移動する比延うイン
中適宜箇所に、ＦＥ４ｒｆ、鋼材１．２の移動にともな
って＃匍し得る工う本発明の接合装置１３が設備されて
いるう そこで、方法の説明に先立って、まずその接合装置ｔ３
の概要について述べる。図中４は先行圧延鋼材１の後端
部と後行圧延鋼材２の先端部が載せられる耐火材製のテ
ーブルであるにのテーブル４上には、載せられる圧砥礪
相１，２の幅方向両側に位置する場所に、互いにロッド
を向き合わせにした一対のシリンダ５が固定されている
。こ几らシリンダ５のロッド先端には、ロッドを伸長し
た際、圧延鋼材１，２の側面に当几るように直方体状の
０１！１面ブロック６がそれぞれ取付けられている。こ
れらブロック６は耐火材製で、テーブル４の上面を滑り
移動可能とされたものであり、シリのロッド ン１５’＆ｉ、ｆｄすることにニジ圧延鋼材１，２０幅
方向外側に退避するようになっている。ｔｅ、テーブル
４の上方には、内圧ｌｐ、＠材１，２の先細端部を接合
するための溶鋼７を入れたとりべ８が設置され、そのと
りぺ８の下部に設は友江入管９から所要箇所に溶鋼７を
注入できるようになっている。なお、注入ｖ９の上端に
は開閉弁（図示略）が設けられておシ、この開閉弁を操
作することにＬす、適宜に溶く−を注入し九り、注入を
停止しｔ勺できるようになっている。The present invention will be described in detail with reference to the drawings. In the figure, 1 is the preceding rolled steel material, 2 is the trailing rolled steel material #i, and these rolled steel materials 1 and 2 are roughly rolled or transported from the continuous casting machine to finish IE+f.
It is moving towards the fi aircraft as shown by the arrow (a). And, during this process...the welding device 13 of the present invention, which is capable of tearing as the FE4rf and steel material 1.2 are moved, is installed at appropriate locations during the transport and movement of the scarred steel material 1.2. Before explaining the method, we will first explain the joining device t3.
This section provides an overview of the following. In the figure, reference numeral 4 denotes a table made of fireproof material on which the rear end of the preceding rolled steel material 1 and the tip end of the trailing rolled steel material 2 are placed. A pair of cylinders 5 with rods facing each other are fixed at locations on both sides. Rectangular parallelepiped-shaped 01!1-sided blocks 6 are respectively attached to the ends of the rods of the cylinders 5 so as to come into contact with the side surfaces of the rolled steel materials 1 and 2 when the rods are extended. These blocks 6 are made of refractory material and can be slid on the top surface of the table 4, and are retracted outward in the width direction of the rolled steel materials 1 and 20 when the blocks 6 are moved. ing. A ladle 8 containing molten steel 7 for joining the tapered ends of the materials 1 and 2 is installed above the table 4 under an internal pressure lp, and a Tomoe inlet pipe 9 is installed at the bottom of the ladle 8. The molten steel 7 can be injected into the required location. In addition, an on-off valve (not shown) is provided at the upper end of the injection valve 9. By operating this on-off valve, it is possible to inject the dissolved liquid as appropriate, and then stop the injection. It has become.

次に、上記構成の接合部（直に工って接合を実施する場
合１でついて述べる。Next, the joint part of the above structure (case 1 in which joining is performed directly) will be described.

まず、簾＠装［３を圧延鋼材１，２の搬送速度に会わせ
て移動させ、テーブル４上に先行ｒｆ＋ｆｆｉ　ｆｉ部
材の後端部と後行圧延鋼材２の先端部を載せて、両端部
同士を互いの間に間隙１０をもたせて近接させる、この
場合、テーブル４に載せる前段階で、予め端部を垂直に
切断し、端面同士が対向する工うにして訃〈、、ま九、
前記の近接論外にあわせて、シリンダ５を作動させてロ
ッドを伸長し、両側面ブロック６．６を矢印（ロ）の工
うに移動し、両８：延鋼材１，２の両１則面を押圧して
、両憎材１．２の幅方向中心位置を一致させる。このと
き、側面ブロック６．６が圧延鋼材１，２の側面に当接
して、間隙１０の１則面を塞ぐ。そして、間隙１０の底
面はテーブル４にニジ、側面は側面ブロック６．６にニ
ジ椹がれ、それによシ凹所が形成される。First, move the curtain 3 to match the conveyance speed of the rolled steel materials 1 and 2, place the rear end of the leading rf+ffi fi member and the tip of the trailing rolled steel material 2 on the table 4, and place both ends. In this case, before placing them on the table 4, the ends are cut vertically so that the end faces face each other.
In accordance with the above-mentioned proximity theory, actuate the cylinder 5 to extend the rod, move the both side blocks 6.6 in the direction of the arrow (b), Press to align the widthwise center positions of the two parts 1.2. At this time, the side blocks 6.6 come into contact with the side surfaces of the rolled steel materials 1 and 2 and close the one-dimensional surface of the gap 10. Then, the bottom surface of the gap 10 is bent into the table 4, and the side surface is bent into the side block 6.6, thereby forming a recess.

この状態において、とシベ８の中の溶鋼７を注入管９を
通して凹所に注入する。すると、溶＠７の熱にＬシ、圧
延粗材１，２の先後端面が一部溶融し、その状態で冷却
（強制冷却、ま友は伝熱、放熱による自然冷却）するこ
とにニジ、両圧延鋼材１，２が接合される。In this state, the molten steel 7 in the shell 8 is injected into the recess through the injection pipe 9. Then, the front and rear end surfaces of the rolled rough materials 1 and 2 are partially melted by the heat of the melt @ 7, and in that state they are cooled (forced cooling, and natural cooling by heat transfer and heat radiation). Both rolled steel materials 1 and 2 are joined.

また、この場合、溶鋼７を注入し、圧延鋼材１゜２の先
後端面が単に昇温し次段階で、後行圧延鋼材２を先行圧
６チ鋼材ｌに押付けることにニジ、両−材１，２を圧接
接合させることもできる。In addition, in this case, the molten steel 7 is injected, the temperature of the front and rear end faces of the rolled steel material 1.2 is simply raised, and in the next step, the trailing rolled steel material 2 is pressed against the preceding pressure 6 steel material 1. 1 and 2 can also be pressure-welded.

なお、上記実施例においては、テーブル４セ工び側面ブ
ロック６を耐火材自体で構成し几場合を示したが、耐火
性を有するものであれば何でもよく、たとえば内部を水
冷する工うにした鋼製のものとしても↓い６ 〔発明の効果〕 本発明は、上述の説明の如く、接合すべき両端部間に間
隙を設けて、その間隙に溶鋼を注入して、その熱を利用
［７て接合するというものでちるから、瞬時に接合面を
昇熱あるいは溶融させろことができ、圧接あるいは溶融
固着し次ときの実質的な接合面積を大きくとれる。した
がって、従来の溶接接合法の、ｒ、うに接合部の周部し
か実質的に埠合し得ないものとは異なり、高い接合強度
を確保し得る。その結果、後続の千帆において、幼木の
良い連続化が図れるという効果を奏−′ｔ″己。In the above embodiment, the table 4 and the side blocks 6 are made of fire-resistant material, but any material can be used as long as it is fire-resistant, such as steel whose interior is water-cooled. [Effects of the Invention] As explained above, the present invention provides a gap between both ends to be joined, injects molten steel into the gap, and utilizes the heat [7 Since the bonding process is performed by using a method of joining, it is possible to instantaneously heat up or melt the bonded surfaces, and the actual bonding area can be increased the next time by pressure welding or melting and fixing. Therefore, unlike the conventional welding method in which only the periphery of the sea urchin joint can be substantially welded, high joint strength can be ensured. As a result, the effect is that a good succession of young trees can be achieved in the subsequent thousand sails.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例の説明図である。 ｌ・・・・・・先行圧他渭材、２・・・・・・後行圧延
鋼材、３・・・・・・接合装置、４・・・・・・テーブ
ル、５・・・・・・シリンダ（ブロック多動機構）、６
・・・・・・側面ブロック、７・・・・・・溶鋼、８・
・・・・・と９べ％　９・・・・・・注入管、１０・・
・・・・間隙。The drawings are explanatory diagrams of one embodiment of the present invention. 1... Leading pressure and other rolling materials, 2... Trailing rolled steel material, 3... Joining device, 4... Table, 5...・Cylinder (block hyperaction mechanism), 6
...Side block, 7... Molten steel, 8.
...and 9be% 9...injection tube, 10...
····gap.

Claims (1)

【特許請求の範囲】 ｉｌｌ　熱間圧延を行なうに際し、粗圧延工程前もしく
は仕上圧延工程前の段階で、先行圧延鋼材の後端部と後
行圧延鋼材の先端部を接合する方法において、前記接合
すべき先後端部を、互いの間に間隙をもたせて近接させ
るとともに、該間隙の底面および９８面を耐火性を有す
る部材で届いで１それに、Ｃつて形成される凹所に溶鋼
を注ぎ込み、その熱を利用して両圧延鋼材を接合するこ
とを特徴とする熱間圧延における圧延鋼材の接合方法。 （２）熱間圧延ラインの粗圧延機前もしくは仕上圧延機
前に備えられ、搬送される先行圧延鋼材の後端部と後行
圧延鋼材の先端部を接合する装置であって、搬送される
圧延鋼材とともに移動可能な耐火性を有するテーブルと
、このテーブル上に、前記先行圧延鋼材の後端部および
後行圧延・鋼材の先端部を互いの間に間隙をも九せて近
接させて載せ交際に、前記間隙の両側面を塞ぐ耐火性を
有する一対の側面ブロックと、これら側面ブロックを前
記間隙の側面を塞ぐ位置に移動させ友り、その位置から
離れた位置に移動させたシするブロック移動機構と、前
記間隙に対して溶鋼を注ぎ込む溶鋼注入装置とから成る
ことを特徴とする熱間圧延における圧延鋼材の接合装置
、[Scope of Claims] ill In a method of joining a rear end of a preceding rolled steel material and a leading end of a succeeding rolled steel material at a stage before a rough rolling process or a finish rolling process when performing hot rolling, the joining The front and rear ends to be treated are brought close to each other with a gap between them, and the bottom and 98 sides of the gap are covered with a fire-resistant member, and molten steel is poured into the recess formed by C. A method for joining rolled steel materials in hot rolling, characterized by joining both rolled steel materials using the heat. (2) A device that is installed before the rough rolling mill or in front of the finishing mill of a hot rolling line and joins the rear end of the preceding rolled steel material and the leading end of the following rolled steel material, which are being transported. A fire-resistant table that is movable together with the rolled steel material, and the rear end of the preceding rolled steel material and the leading end of the following rolled steel material are placed close to each other with a gap between them. A pair of side blocks having fire resistance that closes both sides of the gap, and a block that moves these side blocks to a position where they close the sides of the gap, and then moves them to a position away from that position. A joining device for rolled steel materials in hot rolling, comprising a moving mechanism and a molten steel injection device for pouring molten steel into the gap,