JP4376664B2 - Hot rolling equipment and hot rolling method - Google Patents

Hot rolling equipment and hot rolling method Download PDF

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JP4376664B2
JP4376664B2 JP2004065276A JP2004065276A JP4376664B2 JP 4376664 B2 JP4376664 B2 JP 4376664B2 JP 2004065276 A JP2004065276 A JP 2004065276A JP 2004065276 A JP2004065276 A JP 2004065276A JP 4376664 B2 JP4376664 B2 JP 4376664B2
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joining
metal plate
hot rolling
metal bar
traveling
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JP2005254248A (en
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健治 堀井
繁俊 近藤
慎一 加賀
修二 馬庭
秀昭 古元
純一 西崎
信弥 金森
ジョン スブ イ
チョン ボン リ
サン ウック ハ
フョウ スブ キム
ビョン ヨン ファン
チョン ス ウォン
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Primetals Technologies Holdings Ltd
Posco Holdings Inc
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Mitsubishi Hitachi Metals Machinery Inc
Posco Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085Joining ends of material to continuous strip, bar or sheet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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 plates, strips, bands or sheets of indefinite length
    • B21B1/24Metal-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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26Metal-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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007Cutting or shearing the product
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0092Welding in the rolling direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B2275/00Mill drive parameters
    • B21B2275/02Speed
    • B21B2275/06Product speed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

本発明は、金属板の走行中に先行金属板と後行金属板との接合が行える熱間圧延設備及び熱間圧延方法に関する。   The present invention relates to a hot rolling facility and a hot rolling method capable of joining a preceding metal plate and a succeeding metal plate while the metal plate is traveling.

金属板の熱間圧延設備では、粗圧延機と仕上圧延機により所望の厚さの金属板を得るようになっている。近年、粗圧延機と仕上圧延機の間で金属バーを接合し、仕上げ圧延を連続して行えるようにすることが開発されている。仕上げ圧延を連続して行うためには、高速で金属バー同士を接合する必要があり、種々の技術が提案されている(例えば、特許文献1、特許文献2参照)。   In a hot rolling facility for metal plates, a metal plate having a desired thickness is obtained by a rough rolling mill and a finish rolling mill. In recent years, it has been developed to join metal bars between a roughing mill and a finishing mill so that finish rolling can be performed continuously. In order to perform finish rolling continuously, it is necessary to join metal bars at a high speed, and various techniques have been proposed (see, for example, Patent Document 1 and Patent Document 2).

一般に、仕上圧延機は強力であり大きな引張り力を発生し得る能力を持っている。特に、接合過程で大きな引張り力が作用すると十分な接合強度を得られなくなる可能性がある。   Generally, a finishing mill is powerful and has the ability to generate a large tensile force. In particular, if a large tensile force acts in the joining process, there is a possibility that sufficient joining strength cannot be obtained.

従来の技術では、接合時には先行する金属バーを接合機によりクランプした状態で接合機を走行させて接合を実施している。このため、接合箇所に大きな引張り力が作用することがない。   In the conventional technology, at the time of joining, joining is performed by running the joining machine with the preceding metal bar clamped by the joining machine. For this reason, a big tensile force does not act on a joining location.

近年、高速で金属バー同士を接合する技術として、例えば、先行金属バーの後端と後行金属バーの先端とを重ね合わせ、両方の金属バーを同時に剪断し、剪断過程で新生面同士を直接接触させて接合する技術が知られている(例えば、特許文献3参照)。   In recent years, as a technique for joining metal bars at high speed, for example, the rear end of the preceding metal bar and the tip of the subsequent metal bar are overlapped, both metal bars are sheared at the same time, and the new surfaces are directly contacted in the shearing process. A technique for joining them is known (for example, see Patent Document 3).

この技術は、剪断による接合であるため、単純かつ短時間での接合が可能となり、熱間圧延設備に好適な方式となっている。   Since this technique is joining by shearing, joining can be performed simply and in a short time, and is a method suitable for hot rolling equipment.

特開平10-166002号公報JP-A-10-166002 特開2001-71002号公報Japanese Patent Laid-Open No. 2001-71002 特開平9-174117号公報Japanese Patent Laid-Open No. 9-174117

従来の熱間圧延設備では、接合過程において接合部に大きな引張り力が作用すると、接合面に生ずる水平方向の圧縮力が減少して接合強度に悪影響を及ぼすことがあった。   In conventional hot rolling equipment, if a large tensile force acts on the joint in the joining process, the horizontal compressive force generated on the joining surface may be reduced, which may adversely affect the joining strength.

特に、剪断による接合機を備えた熱間圧延設備では、接合機における剪断部位の移動速度と金属バーの走行速度との関係等は具体的には特定されておらず、金属バーの走行と接合部位の移動とが独立している接合装置を備えた熱間圧延設備においては接合部の引張りによる接合強度低下を避ける技術の確立が要望されているのが現状であった。   In particular, in a hot rolling facility equipped with a joining machine by shearing, the relationship between the moving speed of the shearing part in the joining machine and the traveling speed of the metal bar is not specifically specified, and the traveling and joining of the metal bar is not specified. In a hot rolling facility equipped with a joining device that is independent of the movement of a part, it is the present situation that establishment of a technique that avoids a reduction in joining strength due to tensile of the joint is desired.

本発明は上記状況に鑑みてなされたもので、金属バーの走行と接合手段の移動とが独立している接合装置を備えた熱間圧延設備において接合手段の移動速度と金属バーの走行速度との関係を適切に規定して、接合過程において接合部の引張りによる接合強度低下を避けることができる状態での連続圧延を可能にした熱間圧延設備を提供することを目的とする。   The present invention has been made in view of the above situation, and in a hot rolling facility equipped with a joining device in which the travel of the metal bar and the movement of the joining means are independent, the moving speed of the joining means, the traveling speed of the metal bar, It is an object of the present invention to provide a hot rolling facility that can perform continuous rolling in a state in which it is possible to avoid a decrease in bonding strength due to tensile of a bonded portion in the bonding process.

また、本発明は上記状況に鑑みてなされたもので、金属バーの走行と接合手段の移動とが独立している接合装置を備えた熱間圧延設備において接合手段の移動速度と金属バーの走行速度との関係を適切に規定して、接合過程において接合部の引張りによる接合強度低下を避けることができる状態での連続圧延を可能にした熱間圧延方法を提供することを目的とする。   In addition, the present invention has been made in view of the above situation, and in a hot rolling facility equipped with a joining device in which the travel of the metal bar and the movement of the joining means are independent, the travel speed of the joining means and the travel of the metal bar. An object of the present invention is to provide a hot rolling method in which the relationship with the speed is appropriately defined and continuous rolling is possible in a state in which it is possible to avoid a reduction in the joining strength due to the tension of the joining part in the joining process.

上記目的を達成するための請求項1に係る本発明の熱間圧延設備は、
仕上圧延機の上流側に先行金属板の後端と後行金属板の先端とを金属板の走行中に接合する接合装置を配置し、接合装置は、接合手段の走行方向の移動機構が金属板の走行とは独立して構成され、接合過程において仕上圧延機と接合手段との間の金属板に対して張力が作用しないように、接合手段の走行方向への移動は、接合開始から接合終了までの間の少なくとも接合開始の時は仕上圧延機の入側での金属板の走行速度よりも速く設定されることを特徴とする。
The hot rolling equipment of the present invention according to claim 1 for achieving the above object is
A joining device that joins the trailing end of the preceding metal plate and the leading end of the succeeding metal plate while the metal plate is traveling is disposed upstream of the finishing mill, and the joining device has a mechanism for moving the joining means in the traveling direction . The movement of the joining means in the running direction is from the start of joining so that tension is not applied to the metal plate between the finishing mill and the joining means in the joining process. It is characterized in that it is set to be faster than the traveling speed of the metal plate on the entry side of the finish rolling mill at least at the start of joining until the end of joining .

そして、請求項2に係る本発明は、
請求項1に記載の熱間圧延設備において、
接合手段の走行方向への移動は、接合手段の接合開始時における金属板の速度変動を吸収する状態に設定されることを特徴とする。
And this invention which concerns on Claim 2 is
In the hot rolling equipment according to claim 1,
The movement of the joining means in the traveling direction is characterized in that the joining means is set in a state of absorbing the speed fluctuation of the metal plate at the start of joining of the joining means .

また、請求項3に係る本発明は、
請求項1又は請求項2に記載の熱間圧延設備において、
先行金属板の後端と後行金属板の先端とを重ね合わせる重ね合わせ手段を備え、接合装置は、金属板の重ね合わせ部を挟んでその両側から押し込んで剪断しながら接合する一対の剪断刃を有する接合手段を備えたことを特徴とする。
Further, the present invention according to claim 3 provides
In the hot rolling facility according to claim 1 or 2 ,
The joining device includes a superimposing unit that superimposes the rear end of the preceding metal plate and the front end of the succeeding metal plate, and the joining device is a pair of shearing blades that join the metal plate while pushing and shearing from both sides of the overlapping portion of the metal plate It has the joining means which has these.

また、請求項4に係る本発明は、
請求項3に記載の熱間圧延設備において、
剪断刃の剪断により低下する接合手段の移動速度の低下を加味して接合手段の走行方向への移動を接合開始から接合終了までの間の少なくとも接合開始の時は金属板の走行速度よりも速く設定するようにしたことを特徴とする。
The present invention according to claim 4 provides
In the hot rolling facility according to claim 3 ,
Considering a decrease in the moving speed of the joining means, which is reduced by shearing of the shearing blade, the movement of the joining means in the running direction is faster than the running speed of the metal plate at least at the start of joining between the start of joining and the end of joining. characterized in that so as to set.

また、請求項5に係る本発明は、
請求項4に記載の熱間圧延設備において、
接合完了後に接合された金属板に所定張力が作用するための張力調整手段を備えたことを特徴とする。
The present invention according to claim 5
In the hot rolling equipment according to claim 4,
It is characterized by comprising tension adjusting means for applying a predetermined tension to the metal plates joined after the joining is completed .

上記目的を達成するための請求項6に係る本発明の熱間圧延方法は、
仕上圧延機の上流側に先行金属板の後端と後行金属板の先端とを金属板の走行中に接合する接合装置を配置し、接合装置は、接合手段の走行方向の移動機構が金属板の走行とは独立して構成され、仕上圧延機と接合手段との間の金属板に対して張力が作用しないように接合手段を走行方向に移動し、接合開始から接合終了までの間の少なくとも接合開始の時は仕上圧延機の入側での金属板の走行速度よりも速くしたことを特徴とする。
In order to achieve the above object, the hot rolling method of the present invention according to claim 6 comprises:
A joining device that joins the trailing end of the preceding metal plate and the leading end of the succeeding metal plate while the metal plate is traveling is disposed upstream of the finishing mill, and the joining device has a mechanism for moving the joining means in the traveling direction . It is constructed independently of the travel of the metal plate, and the joining means is moved in the running direction so that no tension is applied to the metal plate between the finish rolling mill and the joining means, and from the start of joining to the end of joining. At least at the start of joining, the traveling speed of the metal plate on the entry side of the finishing mill is higher.

請求項1の本発明の熱間圧延設備では、仕上圧延機の上流側に先行金属板の後端と後行金属板の先端とを金属板の走行中に接合する接合装置を配置し、接合装置は、接合手段の走行方向の移動機構が金属板の走行とは独立して構成され、接合過程において仕上圧延機と接合手段との間の金属板に対して張力が作用しないように、接合手段の走行方向への移動は、接合開始から接合終了までの間の少なくとも接合開始の時は仕上圧延機の入側での金属板の走行速度よりも速く設定されるので、金属板の走行と接合手段の移動とが独立している接合装置を備えた熱間圧延設備において接合手段の移動速度と金属バーの走行速度との関係を適切に規定することができると共に、金属板に引っ張り力が生じることがなくなるIn the hot rolling facility of the present invention according to claim 1, a joining device for joining the rear end of the preceding metal plate and the front end of the succeeding metal plate to the upstream side of the finish rolling mill while the metal plate is traveling is provided. device, the moving mechanism of the running direction of the joining means are configured independently of the travel of the metal plate, as tension to the metal plate between the rolling mill and the joining means finish at the bonding process does not act, The movement of the joining means in the traveling direction is set to be faster than the traveling speed of the metal plate on the entry side of the finishing mill at least when joining is started from the start of joining to the end of joining. In a hot rolling facility equipped with a joining device in which the movement of the joining means is independent, the relationship between the moving speed of the joining means and the traveling speed of the metal bar can be properly defined , and the tensile force on the metal plate Will not occur .

請求項2に係る本発明の熱間圧延設備では、請求項1に記載の熱間圧延設備において、接合手段の走行方向の移動は、接合手段の接合開始時における金属板の速度変動を吸収する状態に設定されるので、金属板に速度変動が生じても金属板に引っ張り力が生じることがなくなる。 In hot rolling mill of the present invention according to claim 2, the absorption in the hot rolling mill system according to claim 1, move to the running direction of the joining means, the speed variation of the metal plate at the time of joining the start of the joining means Therefore, even if a speed fluctuation occurs in the metal plate, no tensile force is generated in the metal plate.

請求項3に係る本発明の熱間圧延設備では、請求項1又は請求項2に記載の熱間圧延設備において、先行金属板の後端と後行金属板の先端とを重ね合わせる重ね合わせ手段を備え、接合装置は、金属板の重ね合わせ部を挟んでその両側から押し込んで剪断しながら接合する一対の剪断刃を有する接合手段を備えたので、剪断により金属板の接合を行っても金属板に引っ張り力が生じることがなくなる。 In the hot rolling facility of the present invention according to claim 3 , in the hot rolling facility according to claim 1 or 2 , the overlapping means for overlapping the rear end of the preceding metal plate and the front end of the subsequent metal plate. The joining apparatus includes a joining means having a pair of shearing blades that are pushed in from both sides of the overlapping portion of the metal plates and joined while shearing, so that the metal plate can be joined even if the metal plates are joined by shearing. No pulling force is generated on the plate.

請求項4に係る本発明の熱間圧延設備では、請求項3に記載の熱間圧延設備において、剪断刃の剪断により低下する接合手段の移動速度の低下を加味して接合手段の走行方向の移動を接合開始から接合終了までの間の少なくとも接合開始の時は金属板の走行速度よりも速く設定するようにしたので、剪断により金属板に速度低下が生じても金属板に引っ張り力が生じることがなくなる。 In the hot rolling facility according to a fourth aspect of the present invention, in the hot rolling facility according to the third aspect , in the traveling direction of the joining means in consideration of a decrease in the moving speed of the joining means which is reduced by shearing of the shearing blade . Since the movement of the metal plate is set to be faster than the traveling speed of the metal plate at least from the start of the joint to the end of the joint, the tensile force is applied to the metal plate even if the speed of the metal plate decreases due to shearing. No longer occurs.

請求項5に係る本発明の熱間圧延設備では、請求項4に記載の熱間圧延設備において、接合完了後に接合された金属板に所定張力が作用するための張力調整手段を備えたので、接合完了後の金属板が所定張力に維持される。 In the hot rolling facility of the present invention according to claim 5 , in the hot rolling facility according to claim 4 , since the tension adjusting means for acting a predetermined tension on the metal plates joined after joining is completed, The metal plate after completion of joining is maintained at a predetermined tension.

従って、接合過程において接合部の引張りによる接合強度低下を避けることができる状態での連続圧延を可能にした熱間圧延装置となる。   Therefore, a hot rolling apparatus that enables continuous rolling in a state in which it is possible to avoid a decrease in bonding strength due to the tension of the bonded portion in the bonding process.

請求項6に係る本発明の熱間圧延方法では、仕上圧延機の上流側に先行金属板の後端と後行金属板の先端とを金属板の走行中に接合する接合装置を配置し、接合装置は、接合手段の走行方向の移動機構が金属板の走行とは独立して構成され、仕上圧延機と接合手段との間の金属板に対して張力が作用しないように接合手段を走行方向に移動し、接合開始から接合終了までの間の少なくとも接合開始の時は仕上圧延機の入側での金属板の走行速度よりも速くしたので、金属板の走行と接合手段の移動とが独立している接合装置を備えた熱間圧延設備において接合手段の移動速度と金属バーの走行速度との関係を適切に規定することができる。 In the hot rolling method of the present invention according to claim 6 , a joining device for joining the rear end of the preceding metal plate and the front end of the succeeding metal plate to the upstream side of the finishing mill while the metal plate is running, bonding apparatus, the moving mechanism of the running direction of the joining means are configured independently of the running of the metal plate, the joining means so tension is not applied to the metal plate between the finishing mill and the joining means Since the traveling speed of the metal plate is higher than the traveling speed of the metal plate on the entry side of the finishing mill at least at the time of the start of joining between the start of joining and the end of joining. In a hot rolling facility equipped with a joining device independent of each other, the relationship between the moving speed of the joining means and the traveling speed of the metal bar can be appropriately defined.

従って、接合過程において接合部の引張りによる接合強度低下を避けることができる状態での連続圧延を可能にした熱間圧延方法となる。   Therefore, it is a hot rolling method that enables continuous rolling in a state where it is possible to avoid a decrease in bonding strength due to tensile of the bonded portion in the bonding process.

以下本発明の実施の形態を図面に基づき詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1に基づいて熱間圧延設備の全体状況を説明する。図1には本発明の一実施形態例に係る熱間圧延設備の全体構成を示してある。   The overall situation of the hot rolling facility will be described with reference to FIG. FIG. 1 shows the overall configuration of a hot rolling facility according to an embodiment of the present invention.

本実施形態例の熱間圧延設備は、上流側から粗圧延機(粗ミル)1、コイルボックス2、接合装置3、複数段の圧延機により構成される仕上圧延機(仕上ミル)4及びダウンコイラー5が備えられている。   A hot rolling facility according to this embodiment includes a roughing mill (rough mill) 1, a coil box 2, a joining device 3, a finishing mill (finishing mill) 4 and a down-roller configured from a plurality of stages from the upstream side. A coiler 5 is provided.

粗ミル1で圧延された金属板(後行金属バー)6はコイルボックス2のコイラーに巻き取られ、粗ミル1と仕上ミル4の走行速度の差が調整される。コイルボックス2のコイラーから巻き出された後行金属バー6は先端がクロップシャー7により切断された後、接合装置3の重ね装置8で先行金属バー9の後端(必要に応じてクロップシャー7により端部が切断された)に重ね合わされる。   The metal plate (following metal bar) 6 rolled by the coarse mill 1 is wound around the coiler of the coil box 2, and the difference in travel speed between the coarse mill 1 and the finishing mill 4 is adjusted. The trailing metal bar 6 unwound from the coiler of the coil box 2 is cut at the tip by the crop shear 7, and then the rear end of the preceding metal bar 9 by the stacking device 8 of the joining device 3 (if necessary, the crop shear 7 The end portion was cut by the above.

後行金属バー6の先端と先行金属バー9の後端が接合装置3の接合機10で接合され、接合部のクロップがクロップ処理装置12で切断される。接合装置3で接合されて連続状態となった金属バー11は、仕上ミル4に送られる。   The leading end of the trailing metal bar 6 and the trailing end of the preceding metal bar 9 are joined by the joining machine 10 of the joining device 3, and the crop at the joined portion is cut by the crop processing device 12. The metal bar 11 joined by the joining device 3 and brought into a continuous state is sent to the finishing mill 4.

接合装置3は、先行金属バー9の後端と後行金属バー6の先端とを金属バーの走行中に接合する構成で、短時間で接合が可能な短時間接合装置となっている。そして、走行中に接合を実施するために、接合機が金属バーの走行に追従して移動する構成や、接合機が金属バーの走行に追従して揺動する構成が適用可能である。   The joining device 3 is configured to join the rear end of the preceding metal bar 9 and the front end of the succeeding metal bar 6 while the metal bar is traveling, and is a short-time joining device capable of joining in a short time. In order to perform joining during traveling, a configuration in which the joining machine moves following the traveling of the metal bar or a configuration in which the joining machine swings following the traveling of the metal bar can be applied.

例えば、詳細は後述するが、接合装置3の接合機10は、先行金属バー9の後端と後行金属バー6の先端との重ね合わせ部を挟んでその両側から押し込んで剪断しながら接合する一対の剪断刃を有する接合機構となっている。   For example, although the details will be described later, the joining machine 10 of the joining apparatus 3 joins while pushing and shearing from both sides of the overlapping portion of the rear end of the preceding metal bar 9 and the front end of the succeeding metal bar 6. The joining mechanism has a pair of shear blades.

接合機10としては、剪断しながら接合する方式以外でも短時間で走行中に金属バーを接合できる方式であって、走行方向の移動機構が金属板の走行と独立して構成されている誘導加熱方式、レーザ加熱方式、溶削方式等、他の方式の接合機を適用することが可能である。   The joining machine 10 is a method that can join a metal bar during traveling in a short time other than the method of joining while shearing, and the induction heating in which the moving mechanism in the traveling direction is configured independently of the traveling of the metal plate. It is possible to apply other types of bonding machines such as a method, a laser heating method, and a welding method.

仕上ミル4に送られた金属バー11は複数段の圧延機により所望の板厚に順次熱間圧延されて所望の板厚に圧延され、所望の板厚に圧延された金属バー11はダウンコイラー5に巻き取られる。   The metal bar 11 sent to the finishing mill 4 is successively hot-rolled to a desired plate thickness by a multi-stage rolling mill and rolled to a desired plate thickness, and the metal bar 11 rolled to the desired plate thickness is down-coiler. 5 is wound up.

図中の符号で、13はコイルボックス2の出側に設けられたレベラー、14は接合装置3の出側に設けられたレベラー、15は仕上ミル4の入側に設けられたクロップシャー、16はレベラー14とクロップシャー15の間に配置されたエッジヒータ、17はエッジヒータ16の後流側に配置されたバーヒータである。   In the figure, 13 is a leveler provided on the exit side of the coil box 2, 14 is a leveler provided on the exit side of the joining device 3, 15 is a crop shear provided on the entry side of the finishing mill 4, 16 Is an edge heater disposed between the leveler 14 and the crop shear 15, and 17 is a bar heater disposed on the downstream side of the edge heater 16.

尚、レベラー13、14、クロップシャー15、エッジヒータ16、バーヒータ17の配置は、熱間圧延設備の状況等により適宜選択して配置されるものであり、配置位置や配置の有無等は図示例に限定されるものではない。   The arrangement of the levelers 13 and 14, the crop shear 15, the edge heater 16 and the bar heater 17 is appropriately selected and arranged according to the conditions of the hot rolling facility, etc. It is not limited to.

また、先行金属バー9の後端及び後行金属バー6の先端を切断するクロップシャー7は、金属バーを突合せて接合する場合は必要となるが、金属バーを重ね合わせて剪断の過程で接合する場合には必ずしも必要ではなく、省略することも可能である。   Further, the crop shear 7 for cutting the rear end of the preceding metal bar 9 and the front end of the subsequent metal bar 6 is necessary when the metal bars are joined to each other, but the metal bars are overlapped and joined in the process of shearing. In this case, it is not always necessary and can be omitted.

図2乃至図6に基づいて接合装置3の接合機10の一例を具体的に説明する。図2、図3には接合機10の概略構成、図4には接合完了状態の概念、図5、図6には刃物駆動機構の概念を示してある。   An example of the bonding machine 10 of the bonding apparatus 3 will be specifically described with reference to FIGS. 2 and 3 show a schematic configuration of the joining machine 10, FIG. 4 shows a concept of a joining completion state, and FIGS. 5 and 6 show a concept of a blade driving mechanism.

図2、図3に基づいて接合機10の概略を説明する。図2は接合開始状態であり、図3は接合完了状態である。   An outline of the bonding machine 10 will be described with reference to FIGS. 2 and 3. FIG. 2 is a joining start state, and FIG. 3 is a joining completion state.

図2に示すように、先行金属バー9の後端21の上に後行金属バー6の先端22が重ね合わされ、後端21と先端22が重ねあわされた部分は突起25を有する上刃物26と突起27を有する下刃物28で挟み込まれている。即ち、突起25、27が後端21と先端22の表面に接触した状態になっている。   As shown in FIG. 2, the leading end 22 of the trailing metal bar 6 is overlaid on the trailing end 21 of the preceding metal bar 9, and the portion where the trailing end 21 and the leading end 22 overlap each other has an upper cutter 26 having a protrusion 25. And a lower cutter 28 having a protrusion 27. That is, the protrusions 25 and 27 are in contact with the surfaces of the rear end 21 and the front end 22.

また、先行金属バー9の後端21と後行金属バー6の先端22が重ねあわされた部位には、上クランプ31及び下クランプ32が接触している。上クランプ31は上支持装置33により任意の油圧力で支持され、下クランプ32は下支持装置34により任意の油圧力で支持されている。   Further, the upper clamp 31 and the lower clamp 32 are in contact with the portion where the rear end 21 of the preceding metal bar 9 and the front end 22 of the succeeding metal bar 6 are overlapped. The upper clamp 31 is supported by the upper support device 33 at an arbitrary oil pressure, and the lower clamp 32 is supported by the lower support device 34 at an arbitrary oil pressure.

上刃物26、上クランプ31、上支持装置33は、上刃物集合体35として一体的に形成されている。また、下刃物28、下クランプ32、下支持装置34は、下刃物集合体36として一体的に形成されている。   The upper cutter 26, the upper clamp 31, and the upper support device 33 are integrally formed as an upper cutter assembly 35. The lower cutter 28, the lower clamp 32, and the lower support device 34 are integrally formed as a lower cutter assembly 36.

上刃物集合体35及び下刃物集合体36はハウジング37のポスト部に案内され、先行金属バー9及び後行金属バー6の厚さ方向に移動するように支持されている。上刃物集合体35及び下刃物集合体36は後述するリンク機構により接近・離反できるように構成され、先行金属バー9及び後行金属バー6を挟んで上刃物集合体35と下刃物集合体36が互いに接近または離反される。接合過程は接近動とされ、接合後は離反動とされる。   The upper cutter assembly 35 and the lower cutter assembly 36 are guided by the post portion of the housing 37 and supported so as to move in the thickness direction of the preceding metal bar 9 and the succeeding metal bar 6. The upper cutter assembly 35 and the lower cutter assembly 36 are configured to be able to approach and separate by a link mechanism described later, and the upper cutter assembly 35 and the lower cutter assembly 36 are sandwiched between the preceding metal bar 9 and the succeeding metal bar 6. Are approached or separated from each other. The joining process is an approaching movement, and after the joining is a separation movement.

なお、上刃物26もしくは下刃物28の一方のみを移動させる構成とすることも可能である。   It is also possible to adopt a configuration in which only one of the upper blade 26 or the lower blade 28 is moved.

図3に示すように、上刃物26と下刃物28が先行金属バー9及び後行金属バー6を剪断する過程で、先行金属バー9及び後行金属バー6は互いの剪断面で塑性流動変形して接合されて一体の連続した金属バー11が形成される。   As shown in FIG. 3, in the process in which the upper cutter 26 and the lower cutter 28 shear the leading metal bar 9 and the trailing metal bar 6, the leading metal bar 9 and the trailing metal bar 6 are plastically deformed at the shear surfaces of each other. Are joined together to form an integral continuous metal bar 11.

図4に示すように、接合動作の完了位置では、連続した金属バーの接合部位に上クロップ38及び下クロップ39がそれぞれ上下にずれた位置に残存する。この後、上刃物26と下刃物28を離反させて上下の刃物間が任意の量になるまで退避させる。   As shown in FIG. 4, at the position where the joining operation is completed, the upper crop 38 and the lower crop 39 remain at positions shifted vertically in the joining portions of the continuous metal bars. Thereafter, the upper blade 26 and the lower blade 28 are separated from each other and retracted until an arbitrary amount is obtained between the upper and lower blades.

接合時にそれぞれ上下にずれた位置に残存した上クロップ38及び下クロップ39は、クロップ処理装置12(図1参照)により除去され、連続する金属バー11が仕上ミル4に送られる。   The upper crop 38 and the lower crop 39 remaining at positions shifted vertically at the time of joining are removed by the crop processing device 12 (see FIG. 1), and the continuous metal bar 11 is sent to the finishing mill 4.

接合機10による先行金属バー9と後行金属バー6との接合は、金属バーの走行に同調して行われる。このため、図5、図6に示した刃物駆動機構により、接合機10の同調移動及び上刃物26と下刃物28の接近・離反動が行われる。つまり、上刃物26と下刃物28は先行金属バー9と後行金属バー6の接合点の移動軌跡にしたがって移動されるようになっている。   The joining of the preceding metal bar 9 and the succeeding metal bar 6 by the joining machine 10 is performed in synchronization with the travel of the metal bar. For this reason, the knife drive mechanism shown in FIGS. 5 and 6 performs the synchronous movement of the joining machine 10 and the approach and separation of the upper cutter 26 and the lower cutter 28. That is, the upper cutter 26 and the lower cutter 28 are moved according to the movement locus of the junction point of the preceding metal bar 9 and the succeeding metal bar 6.

図5、図6に基づいて刃物駆動機構を説明する。図5は接合開始以前の状態を示し、図6は接合完了時の状態を示している。   The blade drive mechanism will be described with reference to FIGS. FIG. 5 shows a state before joining is started, and FIG. 6 shows a state when joining is completed.

上刃物26と下刃物28は接合開始以前の位置から接合完了位置を経由して接合開始以前の位置に戻る。このとき、接合する金属バーがライン速度で下流方向に進行しているので、上刃物26と下刃物28はこの進行に同調させながら点線で示す上刃物軌跡、下刃物軌跡を移動する。   The upper cutter 26 and the lower cutter 28 return from the position before the joining start to the position before the joining start via the joining completion position. At this time, since the metal bars to be joined are traveling in the downstream direction at the line speed, the upper cutter 26 and the lower cutter 28 move along the upper cutter trajectory and the lower cutter trajectory indicated by dotted lines while synchronizing with this progression.

主クランク軸41は中心Aに対し2つの偏心軸を有している。上偏心軸42はリンク43を介して上刃物26と連結され、下偏心軸44はリンク45を介して下刃物28に連結されている。主クランク軸41の回転角に応じて、上刃物26及び下刃物28を上下(押し込みまたは後退)させる。   The main crankshaft 41 has two eccentric shafts with respect to the center A. The upper eccentric shaft 42 is connected to the upper cutter 26 via a link 43, and the lower eccentric shaft 44 is connected to the lower cutter 28 via a link 45. In accordance with the rotation angle of the main crankshaft 41, the upper cutter 26 and the lower cutter 28 are moved up and down (pressed or retracted).

また、主クランク軸41と同調関係に係合される同調軸46が備えられ、同調軸46は揺動レバー47を介して上偏心軸42のリンク43及び下偏心軸44のリンク45と連系している。   A tuning shaft 46 that is engaged in a synchronized relationship with the main crankshaft 41 is provided. The tuning shaft 46 is linked to the link 43 of the upper eccentric shaft 42 and the link 45 of the lower eccentric shaft 44 via a swing lever 47. is doing.

同調軸46との連系により、上刃物26及び下刃物28が金属バーに接触している間は金属バーの進行と略等しい速度で金属バーの進行方向に上刃物26及び下刃物28を移動させ、上刃物26及び下刃物28が金属バーから離れると上刃物26及び下刃物28を元の位置に戻す。   Due to the linkage with the tuning shaft 46, the upper cutter 26 and the lower cutter 28 are moved in the traveling direction of the metal bar at a speed substantially equal to the progress of the metal bar while the upper cutter 26 and the lower cutter 28 are in contact with the metal bar. When the upper cutter 26 and the lower cutter 28 are separated from the metal bar, the upper cutter 26 and the lower cutter 28 are returned to their original positions.

上述した接合装置3では、上刃物26と下刃物28が先行金属バー9と後行金属バー6の接合点の移動軌跡にしたがって上下方向に移動され、例えば、接合開始から接合終了までに要する距離が略1m以下に設定されている。   In the joining apparatus 3 described above, the upper cutter 26 and the lower cutter 28 are moved in the vertical direction according to the movement trajectory of the joining point of the preceding metal bar 9 and the succeeding metal bar 6, for example, the distance required from the joining start to the joining end. Is set to approximately 1 m or less.

図1に示した熱間圧延設備では、コイルボックス2を備えた設備を例に挙げて説明してある。コイルボックス2を備えていない熱間圧延設備の場合、後行金属バー6の後端が粗ミル1を抜けた後、もしくは、先行金属バー9の先端が仕上ミル4に噛み込む前に、接合装置3での接合が行われるように設定されている。   In the hot rolling facility shown in FIG. 1, the facility provided with the coil box 2 is described as an example. In the case of a hot rolling facility not provided with the coil box 2, the joining is performed after the trailing end of the trailing metal bar 6 passes through the rough mill 1 or before the leading end of the leading metal bar 9 bites into the finishing mill 4. It is set so that joining by the apparatus 3 is performed.

つまり、接合装置3での接合時には、先行金属バー9と後行金属バー6の圧延が重複しないように設定されている。   That is, at the time of joining by the joining apparatus 3, it is set so that rolling of the preceding metal bar 9 and the succeeding metal bar 6 does not overlap.

上述した接合装置3では、金属バーの厚み方向に対して両側から刃物を押し込んで、剪断過程で剪断面同士を塑性流動変形させて先行金属バー9と後行金属バー6を接合しているので、高い接合強度でしかも短時間で金属バーの接合が可能になる。   In the joining apparatus 3 described above, the cutting tool is pushed in from both sides in the thickness direction of the metal bar, and the shearing surfaces are plastically flow-deformed in the shearing process to join the preceding metal bar 9 and the succeeding metal bar 6. The metal bars can be bonded with high bonding strength and in a short time.

尚、接合装置としては、短時間での接合が可能な装置であれば、図7に示したように、走行ハウジング51に固定刃52及び昇降刃53を備えた走行剪断装置54を適用することも可能である。金属バーの走行に同期させて走行ハウジング51を走行させ、走行中に昇降刃53を下降させて固定刃52との間で剪断を行って先行金属バー9と後行金属バー6の接合を行うことも可能である。   As a joining device, if it is a device capable of joining in a short time, a traveling shearing device 54 having a stationary blade 52 and a lifting blade 53 is applied to the traveling housing 51 as shown in FIG. Is also possible. The traveling housing 51 is traveled in synchronization with the travel of the metal bar, and the lifting / lowering blade 53 is lowered during the travel, and shearing is performed between the stationary blade 52 and the preceding metal bar 9 and the succeeding metal bar 6 are joined. It is also possible.

この場合、接合のための距離(接合開始から接合終了までの距離)は、例えば、10m程度になるが、極めて簡単な装置構成で剪断による接合が可能になる。   In this case, the distance for joining (distance from the start of joining to the end of joining) is about 10 m, for example, but joining by shearing is possible with an extremely simple apparatus configuration.

図2は接合開始状態を示し、上刃物26、下刃物28、上クランプ31、下クランプ32が、2枚重ねられた先行金属バー9と後行金属バー6に接触開始したところである。   FIG. 2 shows a joining start state, in which the upper cutter 26, the lower cutter 28, the upper clamp 31, and the lower clamp 32 have started to contact the preceding metal bar 9 and the trailing metal bar 6 that are stacked.

また、図3は接合完了状態を示すが、この図2〜図3の間に図5に破線で示す軌跡で上刃物26、下刃物28は金属バーがライン速度で下流方向に進行するのと同調して移動するが、この上刃物26、下刃物28の下流方向への移動速度が先行金属バー9の移動速度と異なるとき、接合装置3と仕上ミル4との間で先行金属バー9を引張ったり圧縮したりすることになる。   Further, FIG. 3 shows the state of completion of joining, and the upper blade 26 and the lower blade 28 are moved in the downstream direction at the line speed in the locus shown by the broken line in FIG. 5 between FIGS. When the moving speed of the upper cutter 26 and the lower cutter 28 in the downstream direction is different from the moving speed of the preceding metal bar 9, the leading metal bar 9 is moved between the joining device 3 and the finishing mill 4. It will be pulled or compressed.

接合過程において、接合部に圧縮力を発生させることで強い接合強度を得られるようにした接合方式となっているので、前記のように接合装置3と仕上ミル4との間で先行金属バー9を引張ることになると、接合部に作用する圧縮力が減少して、十分な接合強度を得られなくなる可能性がある。   In the joining process, since the joining method is such that a strong joining strength can be obtained by generating a compressive force in the joining portion, the preceding metal bar 9 is interposed between the joining device 3 and the finishing mill 4 as described above. If the tension is pulled, the compressive force acting on the joint may decrease, and sufficient joint strength may not be obtained.

接合部が仕上ミル4を通過するときは、圧延やミル間での曲げや引張り等の外力が作用し、接合部は過酷な条件にさらされる。このとき、破断なしで仕上ミル4を通過させるためには、極力接合強度を高めておく必要がある。仕上ミル4は強力なので、先行バー9よりも接合装置3の移動速度が遅いと接合装置3と仕上ミル4との間に大きな引張り力が作用することも起こり得る。   When the joint passes through the finishing mill 4, an external force such as rolling or bending between the mills or pulling acts, and the joint is exposed to severe conditions. At this time, in order to pass the finishing mill 4 without breaking, it is necessary to increase the bonding strength as much as possible. Since the finishing mill 4 is strong, if the moving speed of the joining device 3 is slower than that of the preceding bar 9, a large tensile force may act between the joining device 3 and the finishing mill 4.

先行金属バー9の走行と接合機10の移動とが機械的に独立している本実施形態例の熱間圧延設備では、接合機10の走行方向の移動が制御されている。   In the hot rolling facility of the present embodiment in which the traveling of the preceding metal bar 9 and the movement of the joining machine 10 are mechanically independent, the movement of the joining machine 10 in the running direction is controlled.

即ち、仕上ミル4と接合機10との間の先行金属バー9に対し張力が作用しないように、主クランク軸41(図5、図6参照)の回転状態が制御手段61(図5、図6参照)により制御され(制御装置)、接合装機10の走行方向の移動が制御されている。   That is, the rotation state of the main crankshaft 41 (see FIGS. 5 and 6) is controlled by the control means 61 (see FIGS. 5 and 6) so that tension does not act on the preceding metal bar 9 between the finishing mill 4 and the joining machine 10. 6) (control device), and the movement of the joining apparatus 10 in the traveling direction is controlled.

具体的には、接合機10の走行方向の移動は、接合開始から接合終了までの間の少なくとも接合開始の時は、仕上ミル4入側の先行金属バー9の走行速度よりも速く設定されている。接合機10の走行方向の移動の制御は、主クランク軸41(図5、図6参照)の回転状態が制御されることにより実施される。   Specifically, the movement in the traveling direction of the joining machine 10 is set to be faster than the traveling speed of the preceding metal bar 9 on the finishing mill 4 entry side at least at the start of joining between the start of joining and the end of joining. Yes. The movement of the joining machine 10 in the traveling direction is controlled by controlling the rotation state of the main crankshaft 41 (see FIGS. 5 and 6).

接合装置3では、金属バーの厚み方向に対して両側から刃物を押し込んで、剪断過程で剪断面同士を塑性流動変形させて先行金属バー9と後行金属バー6を接合するようになっているので、刃物が接触を開始して接触が開放される間に接合機10の速度が低下する。   In the joining device 3, the cutting tool is pushed in from both sides with respect to the thickness direction of the metal bar, and the shearing surfaces are plastically flow-deformed in the shearing process to join the preceding metal bar 9 and the succeeding metal bar 6. Therefore, the speed of the bonding machine 10 decreases while the blade starts to contact and the contact is released.

つまり、接合機10の移動速度と主クランク軸41の回転状況との関係を表す図8に示すように、主クランク軸41の回転角に応じて接合機10が加速され、刃物が接触を開始して接触が開放される間はほぼ定速度とされ、接触が開放された後接合機10は減速される。   That is, as shown in FIG. 8 showing the relationship between the moving speed of the joining machine 10 and the rotation state of the main crankshaft 41, the joining machine 10 is accelerated according to the rotation angle of the main crankshaft 41, and the blade starts to contact. Thus, while the contact is released, the speed is almost constant, and after the contact is released, the bonding machine 10 is decelerated.

そして、刃物が接触を開始して接触が開放される間、剪断の負荷により接合機10の移動速度が一時的に低下する(速度ドロップ)。接合機10の増速は、速度ドロップを補う速度、即ち、無負荷の場合の速度(図8中点線で示してある)と同じ状態になるように先行金属バー9の走行速度よりも速く設定される。   And while a cutter starts contact and a contact is open | released, the moving speed of the joining machine 10 falls temporarily by the load of shear (speed drop). The speed of the joining machine 10 is set to be higher than the traveling speed of the preceding metal bar 9 so as to be the same as the speed for compensating for the speed drop, that is, the speed in the case of no load (shown by the dotted line in FIG. 8). Is done.

即ち、接合開始時における金属バー10の速度変動が吸収される状態に設定され、剪断刃の剪断により低下する接合機10の移動速度の低下を加味して接合機10の走行方向の移動が速く設定されている。   That is, the speed change of the metal bar 10 at the start of joining is set to be absorbed, and the movement of the joining machine 10 in the traveling direction is fast considering the decrease in the moving speed of the joining machine 10 that is reduced by the shearing of the shearing blade. Is set.

速度ドロップの割合は金属バー11の材質等により変化するため、主クランク軸41の回転を制御する制御手段61には圧延材料の情報等が予め記憶され、接合機10の移動速度は圧延スケジュールに基づいて制御される。   Since the rate of the speed drop varies depending on the material of the metal bar 11 and the like, the control means 61 for controlling the rotation of the main crankshaft 41 stores information on the rolling material in advance, and the moving speed of the joining machine 10 is set in the rolling schedule. Based on control.

尚、金属バー11の速度や接合機10の速度を検出し、金属バー11に対して接合機10が所定の移動速度になるようにフィードバック制御を行うことも可能である。   It is also possible to detect the speed of the metal bar 11 and the speed of the bonding machine 10 and perform feedback control so that the bonding machine 10 has a predetermined moving speed with respect to the metal bar 11.

金属バー11の走行と接合機10の移動とが独立している接合装置3を備えた熱間圧延設備において接合機10の移動速度と金属バー11の走行速度との関係を適切に規定したことにより、接合部の引張りによる接合強度低下を避けることができる状態での連続圧延が可能になる。   The relationship between the moving speed of the joining machine 10 and the running speed of the metal bar 11 is appropriately defined in the hot rolling facility provided with the joining device 3 in which the traveling of the metal bar 11 and the movement of the joining machine 10 are independent. Thus, continuous rolling can be performed in a state in which a decrease in bonding strength due to the tension of the bonded portion can be avoided.

尚、接合完了後に接合された金属バー11に所定張力が作用するための張力調整手段としては図示はしていないが、仕上ミル4入側のピンチロールの速度を遅くするなどの方法がある。   Although not shown in the drawings, tension adjusting means for applying a predetermined tension to the metal bar 11 joined after the joining is completed includes a method of slowing the speed of the pinch roll on the finishing mill 4 entry side.

また、レベラーやダンサーロール等を備えることも可能である。これにより、金属バー11に座屈が生じて曲がりが発生しても曲がりを矯正することが可能になり、エッジヒータ16やバーヒータ17を通過させる際の悪影響をなくすことができる。   It is also possible to provide levelers, dancer rolls, and the like. As a result, even if the metal bar 11 is buckled and bent, the bending can be corrected, and the adverse effect when the edge heater 16 and the bar heater 17 are passed can be eliminated.

尚、後行金属バー6は、先行金属バー9と重なった状態で先行金属バー9とほぼ等しい速度で進行することが好ましい。   The trailing metal bar 6 preferably travels at a speed substantially equal to that of the preceding metal bar 9 in a state where it is overlapped with the preceding metal bar 9.

本発明は、金属板の走行中に先行金属板と後行金属板との接合が行える熱間圧延設備及び熱間圧延方法の産業分野で利用することができる。   INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of hot rolling equipment and a hot rolling method that can join a preceding metal plate and a succeeding metal plate while the metal plate is traveling.

本発明の一実施形態例に係る熱間圧延設備の全体構成図である。1 is an overall configuration diagram of a hot rolling facility according to an embodiment of the present invention. 接合機10の概略構成図である。1 is a schematic configuration diagram of a bonding machine 10. 接合機10の概略構成図である。1 is a schematic configuration diagram of a bonding machine 10. 接合完了状態の概念図である。It is a conceptual diagram of a joining completion state. 刃物駆動機構の概念図である。It is a conceptual diagram of a blade drive mechanism. 刃物駆動機構の概念図である。It is a conceptual diagram of a blade drive mechanism. 他の実施形態例に係る接合装置の概念図である。It is a conceptual diagram of the joining apparatus which concerns on the example of another embodiment. 接合機10の移動速度と主クランク軸41の回転状況との関係を表すグラフである。4 is a graph showing the relationship between the moving speed of the joining machine 10 and the rotation state of the main crankshaft 41.

符号の説明Explanation of symbols

1 粗圧延機(粗ミル)
2 コイルボックス
3 接合装置
4 仕上圧延機(仕上ミル)
5 ダウンコイラー
6 後行金属バー
7 クロップシャー
8 重ね装置
9 先行金属バー
10 接合機
11 金属バー
12 クロップ処理装置
13,14 レベラー
15 クロップシャー
16 エッジヒータ
17 バーヒータ
21 後端
22 先端
25,27 突起
26 上刃物
28 下刃物
31 上クランプ
32 下クランプ
33 上支持装置
34 下支持装置
35 上刃物集合体
36 下刃物集合体
37 ハウジング
38 上クロップ
39 下クロップ
41 主クランク軸
42 上偏心軸
43,45 リンク
44 下偏心軸
46 同調軸
47 揺動レバー
51 走行ハウジング
52 固定刃
53 昇降刃
54 走行剪断装置
61 制御装置
1 Rough rolling mill (rough mill)
2 Coil box 3 Joining device 4 Finishing mill (finishing mill)
DESCRIPTION OF SYMBOLS 5 Down coiler 6 Back metal bar 7 Crop shear 8 Stacking device 9 Lead metal bar 10 Joiner 11 Metal bar 12 Crop processing device 13,14 Leveler 15 Crop shear 16 Edge heater 17 Bar heater 21 Rear end 22 Front end 25, 27 Protrusion 26 Upper cutter 28 Lower cutter 31 Upper clamp 32 Lower clamp 33 Upper support device 34 Lower support device 35 Upper cutter assembly 36 Lower cutter assembly 37 Housing 38 Upper crop 39 Lower crop 41 Main crankshaft 42 Upper eccentric shaft 43,45 Link 44 Lower eccentric shaft 46 Tuning shaft 47 Swing lever 51 Traveling housing 52 Fixed blade 53 Lifting blade 54 Traveling shear device 61 Control device

Claims (6)

仕上圧延機の上流側に先行金属板の後端と後行金属板の先端とを金属板の走行中に接合する接合装置を配置し、接合装置は、接合手段の走行方向の移動機構が金属板の走行とは独立して構成され、接合過程において仕上圧延機と接合手段との間の金属板に対して張力が作用しないように、接合手段の走行方向への移動は、接合開始から接合終了までの間の少なくとも接合開始の時は仕上圧延機の入側での金属板の走行速度よりも速く設定されることを特徴とする熱間圧延設備。 A joining device that joins the trailing end of the preceding metal plate and the leading end of the succeeding metal plate while the metal plate is traveling is disposed upstream of the finishing mill, and the joining device has a mechanism for moving the joining means in the traveling direction . The movement of the joining means in the running direction is from the start of joining so that tension is not applied to the metal plate between the finishing mill and the joining means in the joining process. A hot rolling facility characterized in that it is set to be faster than the traveling speed of the metal plate on the entry side of the finish rolling mill at least at the start of joining until the end of joining . 請求項1に記載の熱間圧延設備において、
接合手段の走行方向への移動は、接合手段の接合開始時における金属板の速度変動を吸収する状態に設定されることを特徴とする熱間圧延設備。
In the hot rolling equipment according to claim 1,
The hot rolling facility characterized in that the movement of the joining means in the traveling direction is set to a state of absorbing the speed fluctuation of the metal plate at the start of joining of the joining means .
請求項1又は請求項2に記載の熱間圧延設備において、
先行金属板の後端と後行金属板の先端とを重ね合わせる重ね合わせ手段を備え、接合装置は、金属板の重ね合わせ部を挟んでその両側から押し込んで剪断しながら接合する一対の剪断刃を有する接合手段を備えたことを特徴とする熱間圧延設備。
In the hot rolling facility according to claim 1 or 2 ,
The joining device includes a superimposing unit that superimposes the rear end of the preceding metal plate and the front end of the succeeding metal plate, and the joining device is a pair of shearing blades that join the metal plate while pushing and shearing from both sides of the overlapping portion of the metal plate A hot rolling facility comprising a joining means having
請求項3に記載の熱間圧延設備において、
剪断刃の剪断により低下する接合手段の移動速度の低下を加味して接合手段の走行方向への移動を接合開始から接合終了までの間の少なくとも接合開始の時は金属板の走行速度よりも速く設定するようにしたことを特徴とする熱間圧延設備。
In the hot rolling facility according to claim 3 ,
Considering a decrease in the moving speed of the joining means, which is reduced by shearing of the shearing blade, the movement of the joining means in the running direction is faster than the running speed of the metal plate at least at the start of joining between the start of joining and the end of joining. A hot rolling facility characterized in that it is set .
請求項4に記載の熱間圧延設備において、
接合完了後に接合された金属板に所定張力が作用するための張力調整手段を備えたことを特徴とする熱間圧延設備。
In the hot rolling equipment according to claim 4 ,
A hot rolling facility comprising tension adjusting means for applying a predetermined tension to the metal plates joined after joining is completed .
仕上圧延機の上流側に先行金属板の後端と後行金属板の先端とを金属板の走行中に接合する接合装置を配置し、接合装置は、接合手段の走行方向への移動機構が金属板の走行とは独立して構成され、仕上圧延機と接合手段との間の金属板に対して張力が作用しないように接合手段を走行方向に移動し、接合開始から接合終了までの間の少なくとも接合開始の時は仕上圧延機の入側での金属板の走行速度よりも速くしたことを特徴とする熱間圧延方法。 A joining device that joins the trailing end of the preceding metal plate and the leading end of the succeeding metal plate while the metal plate is traveling is disposed upstream of the finishing mill, and the joining device has a mechanism for moving the joining means in the traveling direction. It is constructed independently of the travel of the metal plate, and the joining means is moved in the running direction so that no tension is applied to the metal plate between the finish rolling mill and the joining means, and from the start of joining to the end of joining. A hot rolling method characterized in that at least when joining is started, the traveling speed of the metal plate on the entry side of the finish rolling mill is higher .
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