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JP2009248179A - Steel plate introducing guide, hot straightening machine equipped with steel plate introducing guide and hot-rolled steel plate manufacturing line equipped with hot straightening machine - Google Patents

Steel plate introducing guide, hot straightening machine equipped with steel plate introducing guide and hot-rolled steel plate manufacturing line equipped with hot straightening machine Download PDF

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JP2009248179A
JP2009248179A JP2008102704A JP2008102704A JP2009248179A JP 2009248179 A JP2009248179 A JP 2009248179A JP 2008102704 A JP2008102704 A JP 2008102704A JP 2008102704 A JP2008102704 A JP 2008102704A JP 2009248179 A JP2009248179 A JP 2009248179A
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hot
steel plate
steel sheet
straightening machine
guide
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JP5007697B2 (en
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Atsushi Ozekawa
淳 小瀬川
Tatsuo Tanaka
達夫 田中
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Nippon Steel Corp
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Sumitomo Metal Industries Ltd
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Abstract

【課題】反りを有する鋼板でも一旦停止および搬送方向の逆方向への引抜きを行わず、安定的に熱間矯正機へと導入することができる鋼板誘導ガイド、該鋼板誘導ガイドを備えた熱間矯正機、および該熱間矯正機を備えた熱間圧延鋼板製造ラインを提供すること。
【解決手段】熱間圧延鋼板製造ライン1に備えられる熱間矯正機2の鋼板入り側に設置され、鋼板3を熱間矯正機に導入するために用いる鋼板誘導ガイドであって、板状体11と該板状体の裏面に設置される、熱間圧延鋼板製造ラインの幅方向に略平行な方向に配置されたH形鋼12e、12f、12gおよび熱間圧延鋼板製造ラインの長手方向に略平行な方向に配置されたH形鋼12a、12b、12c、12dと、を備えることを特徴とする、鋼板誘導ガイド10、該鋼板誘導ガイドを備えた熱間矯正機、および該熱間矯正機を備えた熱間圧延鋼板製造ラインとする。
【選択図】図1
A steel plate induction guide that can be stably introduced into a hot straightening machine without temporarily stopping and withdrawing in the direction opposite to the conveying direction even with a warped steel plate, and a hot plate equipped with the steel plate induction guide To provide a straightening machine and a hot rolled steel sheet production line equipped with the hot straightening machine.
A steel plate guide that is installed on a steel sheet entrance side of a hot straightening machine 2 provided in a hot rolled steel sheet production line 1 and is used for introducing the steel sheet 3 into the hot straightening machine. 11 and H-shaped steels 12e, 12f, 12g arranged in a direction substantially parallel to the width direction of the hot-rolled steel sheet production line and the longitudinal direction of the hot-rolled steel sheet production line H-shaped steels 12a, 12b, 12c, and 12d arranged in a substantially parallel direction, a steel plate guide 10 and a hot straightening machine including the steel plate guide, and the hot straightener A hot rolled steel sheet production line equipped with a machine.
[Selection] Figure 1

Description

本発明は熱間圧延鋼板製造ラインにおいて、熱間圧延後の鋼板を熱間矯正機に導入するために用いられる鋼板誘導ガイド、該鋼板誘導ガイドを備えた熱間矯正機、および該熱間矯正機を備えた熱間圧延鋼板製造ラインに関する。   The present invention relates to a steel sheet induction guide used for introducing a hot-rolled steel sheet into a hot straightening machine in a hot rolled steel sheet production line, a hot straightening machine including the steel sheet induction guide, and the hot straightening. The present invention relates to a hot rolled steel sheet production line equipped with a machine.

熱間圧延した鋼板は、客先要求を満足する平坦度に矯正して出荷する。その矯正はまずは熱間にて行い、その後形状検査後に必要に応じて冷間矯正を施す。一般に、熱間圧延工程を経た後の鋼板を冷却する際には、該鋼板の温度ムラや表面の凹凸等に起因する冷却ムラが生じやすく、該冷却ムラは冷却後における鋼板の平坦の悪化、残留応力による鋼板切断後のキャンバー発生、及び機械的性質のバラツキ等の原因となりやすい。鋼板の中でも、厚鋼板をオンラインで冷却する場合には、特に冷却における冷却ムラが生じやすい。冷却ムラが生じた厚鋼板は冷却後の平坦度が崩れるため、次工程以降で平坦度の崩れを矯正する必要がある。そして、鋼板の平坦度の崩れを矯正するには、ローラレベラーやプレスなどを備えた熱間矯正機が用いられる。しかし、熱間矯正機に導入される前の段階の厚鋼板は、通常その先端部に上方向または下方向に大きな反りが生じており、熱間矯正機に導入する前に、その反りを除去しておく必要がある。   Hot-rolled steel sheets are shipped after being corrected to flatness that satisfies customer requirements. The correction is first performed hot, and then a cold correction is performed as necessary after the shape inspection. In general, when cooling a steel sheet after undergoing a hot rolling process, cooling unevenness due to temperature unevenness and surface unevenness of the steel sheet is likely to occur, and the cooling unevenness is a deterioration of flatness of the steel sheet after cooling, This is likely to cause camber generation after cutting the steel sheet due to residual stress and variations in mechanical properties. Among steel plates, when cooling thick steel plates online, cooling unevenness particularly occurs in cooling. Since the flatness after cooling of the thick steel plate in which the cooling unevenness has occurred is lost, it is necessary to correct the flatness deterioration in the subsequent steps. And in order to correct the collapse of the flatness of the steel sheet, a hot straightening machine equipped with a roller leveler or a press is used. However, the thick steel plate in the stage before being introduced into the hot straightening machine usually has a large warp upward or downward at its tip, and the warp is removed before being introduced into the hot straightening machine. It is necessary to keep it.

熱間矯正機に導入される前の鋼板の反りを除去するには、熱間矯正機の鋼板入り側にノックダウンロールと呼ばれる先端部の反り矯正装置を設置することが一般的である。例えば、特許文献1および2には、冷却装置の前にノックダウンロールが付加された簡易の熱間矯正機に関する技術が開示されている。   In order to remove the warpage of the steel sheet before it is introduced into the hot straightening machine, it is common to install a warp straightening device at the tip called a knock-down roll on the steel straight side of the hot straightening machine. For example, Patent Documents 1 and 2 disclose techniques related to a simple hot straightening machine in which a knock-down roll is added before a cooling device.

特開平11−226642号公報JP-A-11-226642 特開2002−11515号公報JP 2002-11515 A

上記特許文献1および2に開示されているようなノックダウンロールによる反り除去工程は、図4(a)に示すように、熱間圧延鋼板製造ライン41において、矢印の方向に搬送されてきた鋼板43の反りを有する先端部分が、熱間矯正機42の前に設置されたノックダウンロール40の下部を通過すると、図4(b)に示すように、鋼板43の搬送が一旦停止されるとともに、ノックダウンロール40が矢印の方向に下ろされ、ノックダウンロール40が鋼板43の反りを押さえられる位置まで下ろされると、図4(c)に示すように、鋼板43が矢印の方向に引き戻されることによって、鋼板43の反りが除去される、というものである。   As shown in FIG. 4 (a), the warp removing process by the knock-down roll as disclosed in Patent Documents 1 and 2 is a steel sheet that has been conveyed in the direction of the arrow in the hot-rolled steel sheet production line 41. When the tip portion having the warpage of 43 passes through the lower part of the knock-down roll 40 installed in front of the hot straightening machine 42, the conveyance of the steel plate 43 is temporarily stopped as shown in FIG. When the knock-down roll 40 is lowered in the direction of the arrow and the knock-down roll 40 is lowered to a position where the warpage of the steel plate 43 is suppressed, the steel plate 43 is pulled back in the direction of the arrow as shown in FIG. Thus, the warp of the steel plate 43 is removed.

このように、ノックダウンロールによる反り除去工程では、鋼板を一旦停止させ、さらに搬送方向の逆方向に引抜くという作業を行うための時間が必然的に必要となる。そして、その時間が鋼板の製造能率に影響を及ぼしていた。したがって、鋼板製造工程における生産性を向上させるためには、上述したような鋼板の反り除去に要する時間を短縮する必要がある。   As described above, in the warp removing step using the knock-down roll, time for performing the operation of temporarily stopping the steel plate and further pulling it out in the direction opposite to the conveying direction is inevitably required. And the time has influenced the manufacturing efficiency of the steel plate. Therefore, in order to improve the productivity in the steel plate manufacturing process, it is necessary to shorten the time required for removing the warp of the steel plate as described above.

そこで本発明は、反りを有する鋼板でも一旦停止および搬送方向の逆方向への引抜きを行わず、安定的に熱間矯正機へ導入することができる鋼板誘導ガイド、該鋼板誘導ガイドを備えた熱間矯正機、および該熱間矯正機を備えた熱間圧延鋼板製造ラインを提供することを課題とする。   Accordingly, the present invention provides a steel plate induction guide that can be stably introduced into a hot straightening machine without temporarily stopping and withdrawing in the direction opposite to the conveyance direction even with a warped steel plate, and a heat provided with the steel plate induction guide. It is an object of the present invention to provide a hot straightening machine and a hot rolled steel sheet production line provided with the hot straightening machine.

熱間圧延鋼板製造ラインにおいて、熱間矯正機と圧延機とは一般に同一ラインに設置されている。そのため、ノックダウンロールでの鋼板の反り除去を行う場合は、その工程にかかる時間が製造能率に大きな影響を及ぼし、上述したように、好ましいものではない。鋼板の先端部に発生する反りを除去するための他の手法としては、熱間矯正機(ローラレベラー)自体で反りの矯正を行うということも考えられるが、反りのある鋼板をローラレベラーにそのまま挿入した場合には、鋼板がローラ間に噛み合わず、製造トラブルが生じる。   In a hot rolled steel sheet production line, a hot straightening machine and a rolling mill are generally installed on the same line. Therefore, when the warp removal of the steel plate with a knock-down roll is performed, the time required for the process greatly affects the production efficiency, and as described above, it is not preferable. As another method for removing the warp generated at the tip of the steel plate, it is conceivable to correct the warp with a hot straightening machine (roller leveler) itself, but the warped steel plate is directly applied to the roller leveler. When inserted, the steel plate does not mesh between the rollers, causing manufacturing trouble.

そこで、本発明者らは、反りを有する鋼板であってもそのまま熱間矯正機に導入することができるように、熱間矯正機の直前(鋼板入り側)に、鋼板を熱間矯正機に誘導するための鋼板誘導ガイドを設置することを考え、本発明を完成させた。   Therefore, the present inventors set the steel sheet as a hot straightening machine immediately before the hot straightening machine (on the side containing the steel sheet) so that even a steel sheet having warpage can be introduced into the hot straightening machine as it is. The present invention was completed in consideration of installing a steel plate guide for guiding.

以下、本発明について説明する。なお、本発明の理解を容易にするため、添付図面の参照符号を括弧書きにて付記するが、それにより本発明が図示の形態に限定されるものではない。   The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiments.

第1の本発明は、熱間圧延鋼板製造ライン(1)に備えられる熱間矯正機(2)の鋼板入り側に設置され、鋼板(3)を熱間矯正機に導入するために用いる鋼板誘導ガイドであって、板状体(11)と該板状体の裏面に設置される裏打ち材(12、12、…)とを備えることを特徴とする、鋼板誘導ガイド(10)である。   1st this invention is a steel plate used in order to introduce | transduce a steel plate (3) into a hot straightening machine installed in the steel plate containing side of the hot straightening machine (2) with which a hot rolled steel plate production line (1) is equipped. A steel plate guide (10) comprising a plate-like body (11) and a backing material (12, 12, ...) installed on the back surface of the plate-like body.

ここに、「熱間矯正機」とは、鋼板の平坦度を矯正できるものであればよく、具体的には、ローラレベラーやプレス機などを備えるものを挙げることができる。「板状体」とは、熱間圧延鋼板製造ライン上を搬送されてくる鋼板の衝突による衝撃に耐えうる板状の部材であれば、特に限定されない。この板状体の具体例としては、SS400といった一般的な材質の鋼板を挙げることができる。また、この板状体の大きさについては、設置される熱間圧延鋼板製造ラインに基本的に依存するが、横幅(熱間圧延鋼板製造ラインの幅方向と略平行な方向の長さ)は熱間圧延鋼板製造ラインの横幅と同じ程度、縦幅(熱間圧延鋼板製造ラインの長手方向に略平行な方向の長さ)は1500〜2500mm程度あればよい。さらに、この板状体の厚さは、強度の観点からは25mm以上であることが好ましく、質量の観点からは40mm以下であることが好ましい。「板状体の裏面」とは、板状体の熱間圧延鋼板製造ラインに対する面とは反対側の面を意味する。「裏打ち材」とは、板状体の剛性を高めると共に、鋼板誘導ガイド自体の総質量を軽減させるために用いるものである。このような裏打ち材の具体例としては、H形鋼を挙げることができる。この裏打ち材の設置方法は特に限定されないが、ボルトによって板状体に固定されることが好ましい。H形鋼を用いる場合、溶接により接合することも可能であるが、鋼板が衝突する板状体は頻繁にメインテナンスを行う必要があり、溶接による接合であると板状体のメインテナンスが困難になる。   Here, the “hot straightening machine” may be any machine that can correct the flatness of the steel sheet, and specifically includes a machine equipped with a roller leveler or a press machine. The “plate-like body” is not particularly limited as long as it is a plate-like member that can withstand an impact caused by a collision of a steel plate conveyed on a hot-rolled steel plate production line. As a specific example of this plate-like body, a general steel plate such as SS400 can be cited. In addition, the size of this plate-like body basically depends on the hot rolled steel sheet production line to be installed, but the lateral width (length in a direction substantially parallel to the width direction of the hot rolled steel sheet production line) is The horizontal width of the hot rolled steel sheet production line and the vertical width (the length in a direction substantially parallel to the longitudinal direction of the hot rolled steel sheet production line) may be about 1500 to 2500 mm. Furthermore, the thickness of the plate-like body is preferably 25 mm or more from the viewpoint of strength, and is preferably 40 mm or less from the viewpoint of mass. The “back surface of the plate-like body” means a surface opposite to the surface of the plate-like body with respect to the hot rolled steel sheet production line. The “lining material” is used to increase the rigidity of the plate-like body and reduce the total mass of the steel sheet guides themselves. Specific examples of such a backing material include H-section steel. The method for installing the backing material is not particularly limited, but it is preferably fixed to the plate-like body with bolts. In the case of using H-shaped steel, it is possible to join by welding, but it is necessary to frequently maintain the plate-like body on which the steel plate collides, and if it is joined by welding, it becomes difficult to maintain the plate-like body. .

上記第1の本発明の鋼板誘導ガイドにおいて、裏打ち材が、熱間圧延鋼板製造ラインの幅方向に略平行な方向に配置されたH形鋼(12e、12f、12g)、および熱間圧延鋼板製造ラインの長手方向に略平行な方向に配置されたH形鋼(12a、12b、12c、12d)であることが好ましい。   In the steel sheet guide according to the first aspect of the present invention, the backing material is an H-section steel (12e, 12f, 12g) disposed in a direction substantially parallel to the width direction of the hot-rolled steel sheet production line, and the hot-rolled steel sheet It is preferable that it is H-section steel (12a, 12b, 12c, 12d) arrange | positioned in the direction substantially parallel to the longitudinal direction of a manufacturing line.

裏打ち材をこのようなH形鋼とすることによって、入手しやすい部材によって容易に鋼板誘導ガイドの縦方向(熱間圧延鋼板製造ラインの長手方向に略平行な方向)および横方向(熱間圧延鋼板製造ラインの幅方向に略平行な方向)に剛性を持たせることができる。さらに、鋼板誘導ガイドに剛性を備えさせつつ、鋼板誘導ガイドの総質量を小さくすることもできる。   By using such H-shaped steel as the backing material, it is possible to easily obtain the longitudinal direction of the steel sheet induction guide (a direction substantially parallel to the longitudinal direction of the hot-rolled steel sheet production line) and the lateral direction (hot rolling) with easily available members. Rigidity can be imparted in a direction substantially parallel to the width direction of the steel sheet production line. Furthermore, the total mass of the steel plate guide can be reduced while providing rigidity to the steel plate guide.

第2の本発明は、鋼板入り側に第1の本発明の鋼板誘導ガイドを備えた、熱間矯正機である。   2nd this invention is a hot straightening machine provided with the steel plate induction guide of 1st this invention in the steel-sheet entrance side.

第3の本発明は、熱間圧延機、第一熱間矯正機、冷却装置、および、第二熱間矯正機が、この順に配列され、第一熱間矯正機および/または第二熱間矯正機が上記第2の本発明の熱間矯正機である、熱間圧延鋼板製造ラインである。   In the third aspect of the present invention, a hot rolling mill, a first hot straightening machine, a cooling device, and a second hot straightening machine are arranged in this order, and the first hot straightening machine and / or the second hot straightening machine are arranged. It is a hot-rolled steel plate production line in which the straightening machine is the hot straightening machine of the second aspect of the present invention.

第1の本発明によれば、反りを有する鋼板でも一旦停止および搬送方向の逆方向への引抜きを行わず、安定的に熱間矯正機へ導入することができる鋼板誘導ガイドを提供することができる。したがって、鋼板の反りを除去するために要していた時間を短縮することができ、鋼板の製造能率の向上を図ることができる。   According to the first aspect of the present invention, it is possible to provide a steel sheet guide that can be stably introduced into a hot straightening machine without temporarily stopping and withdrawing in the direction opposite to the conveying direction even with a warped steel sheet. it can. Therefore, the time required for removing the warpage of the steel sheet can be shortened, and the manufacturing efficiency of the steel sheet can be improved.

第2の本発明および第3の本発明によれば、上記第1の本発明の鋼板誘導ガイドを備えることによって、鋼板の製造能率の向上を図ることができる、熱間矯正機および熱間圧延鋼板製造ラインを提供することができる。   According to the second and third aspects of the present invention, a hot straightening machine and a hot rolling machine that can improve the production efficiency of the steel sheet by including the steel sheet guide according to the first aspect of the present invention. A steel plate production line can be provided.

本発明では、熱間圧延鋼板製造ラインにおいて、反りを有する鋼板でも、その鋼板の一旦停止および逆方向への引抜きを行わず安定的に熱間矯正機へと導入することを可能にする鋼板誘導ガイドを提供する。さらに、該鋼板誘導ガイドを備えた熱間矯正機、および該熱間矯正機を備えた熱間圧延鋼板製造ラインを提供する。   In the present invention, in a hot-rolled steel sheet production line, even a warped steel sheet can be stably introduced into a hot straightening machine without temporarily stopping the steel sheet and pulling out in the reverse direction. Provide a guide. Furthermore, the present invention provides a hot straightening machine equipped with the steel sheet guide and a hot rolled steel sheet production line equipped with the hot straightening machine.

1.鋼板誘導ガイド
以下に、図面を参照しつつ、本発明の鋼板誘導ガイドについて具体的に説明する。
1. Hereinafter, the steel sheet guide according to the present invention will be described in detail with reference to the drawings.

図1は、本発明の鋼板誘導ガイドを備える熱間圧延鋼板製造ラインの一部を概略的に示す図である。図1中の矢印は、鋼板の搬送方向である。図2は、本発明の鋼板誘導ガイドを概略的に示す3面図である。(a)は平面図、(b)は側面図、(c)は正面図である。図2(a)において、紙面左右方向を鋼板誘導ガイドの縦方向、紙面上下方向を鋼板誘導ガイドの横方向という。   FIG. 1 is a diagram schematically showing a part of a hot-rolled steel sheet production line including a steel sheet induction guide according to the present invention. The arrow in FIG. 1 is the conveyance direction of a steel plate. FIG. 2 is a trihedral view schematically showing the steel sheet guide according to the present invention. (A) is a plan view, (b) is a side view, and (c) is a front view. In FIG. 2A, the left-right direction on the paper surface is referred to as the vertical direction of the steel plate guide, and the up-down direction on the paper surface is referred to as the horizontal direction of the steel plate guide.

図1に示すように、本発明の鋼板誘導ガイド10(以下、単に「鋼板誘導ガイド10」という。)は、熱間圧延鋼板製造ライン1に備えられる熱間矯正機2の鋼板入り側に設置される。鋼板誘導ガイド10が熱間矯正機2の鋼板入り側に備えられることによって、反りを有する状態で熱間圧延鋼板製造ライン1上を搬送されてきた鋼板3は、図1(a)に示すように、熱間矯正機2に導入される前に鋼板誘導ガイド10に衝突する。鋼板3は、鋼板誘導ガイド10に衝突後、鋼板誘導ガイド10によって押さえられながら搬送されることによって、図1(b)に示すようにある程度反りが除去された状態で熱間矯正機2へと誘導される。   As shown in FIG. 1, a steel plate induction guide 10 of the present invention (hereinafter simply referred to as “steel plate induction guide 10”) is installed on a steel sheet entrance side of a hot straightening machine 2 provided in a hot rolled steel sheet production line 1. Is done. The steel plate 3 that has been conveyed on the hot rolled steel plate production line 1 in a warped state by providing the steel plate guide 10 on the side of the hot straightening machine 2 with the steel plate, as shown in FIG. In addition, it collides with the steel sheet guide 10 before being introduced into the hot straightening machine 2. After the steel plate 3 collides with the steel plate guide 10 and is conveyed while being pressed by the steel plate guide 10, the warp is removed to some extent as shown in FIG. Be guided.

このように、鋼板誘導ガイド10を用いることによって、反りを有する鋼板でも一旦停止および搬送方向の逆方向への引抜きを行わず、安定的に熱間矯正機2へと導入することができる。   As described above, by using the steel plate guide 10, even a warped steel plate can be stably introduced into the hot straightening machine 2 without being temporarily stopped and pulled out in the reverse direction of the transport direction.

鋼板誘導ガイド10は、その角度を調節できるものであることが好ましい。角度の調整方法としては、鋼板誘導ガイド10を取り付ける装置(不図示)により調節することが考えられる。具体的な角度の調整範囲としては、側面視において、鋼板誘導ガイド10と鋼板搬送方向(通常は水平方向)のなす角が10〜30°の範囲であればよい。この角度が10°未満であれば、反りの大きな鋼板に対応することが困難であり、30°を超える大きさであれば鋼板を熱間矯正機2に誘導することが困難になるだけでなく、鋼板誘導ガイド10の上方の空間を有効に活用することができなくなる。   It is preferable that the angle of the steel plate guide 10 can be adjusted. As a method for adjusting the angle, it is conceivable that the angle is adjusted by a device (not shown) for attaching the steel plate guide 10. As a specific angle adjustment range, the angle formed by the steel plate guide 10 and the steel plate conveyance direction (usually the horizontal direction) in the side view may be in a range of 10 to 30 °. If this angle is less than 10 °, it is difficult to handle a steel plate with a large warp, and if it exceeds 30 °, not only is it difficult to guide the steel plate to the hot straightening machine 2. The space above the steel sheet guide 10 cannot be used effectively.

次に、鋼板誘導ガイド10の具体的な構成について、図2を用いて説明する。   Next, a specific configuration of the steel plate guide 10 will be described with reference to FIG.

鋼板誘導ガイド10は、図2に示すように、板状体11と板状体11の裏面に設置される裏打ち材(H形鋼)12、12、…とを備えている。H形鋼12、12、…は、熱間圧延鋼板製造ライン1の幅方向に略平行な方向に配置されたH形鋼12e、12f、および12g、並びに、熱間圧延鋼板製造ライン1の長手方向に略平行な方向に配置されたH形鋼12a、12b、12c、および12dで構成されている。かかる形態とすることによって、鋼板誘導ガイド10に縦方向および横方向の剛性を持たせることができ、上方向の反り(上反り)、下方向の反り(下反り)、幅方向の反り(上面視において凹状や凸状)などの様々な種類の反りを有する鋼板の衝突に耐えることができるようになる。   As shown in FIG. 2, the steel plate guide 10 includes a plate-like body 11 and backing materials (H-shaped steel) 12, 12,... Installed on the back surface of the plate-like body 11. H-section steels 12, 12, ... are H-section steels 12e, 12f, and 12g arranged in a direction substantially parallel to the width direction of the hot-rolled steel sheet production line 1, and the length of the hot-rolled steel sheet production line 1. It consists of H-section steels 12a, 12b, 12c and 12d arranged in a direction substantially parallel to the direction. By adopting such a configuration, the steel sheet guide 10 can be given rigidity in the vertical direction and the horizontal direction, and warps in the upward direction (upward warp), warps in the downward direction (downward warp), and warps in the width direction (upper surface). It is possible to withstand the collision of steel sheets having various types of warpage such as concave and convex shapes.

また、H形鋼12、12、…が備えられることによって、鋼板誘導ガイド10に剛性を持たせつつ、鋼板誘導ガイド10自体の総質量を軽減させることができる。鋼板誘導ガイド10を熱間圧延鋼板製造ライン1上に吊るした状態で設置するためは、鋼板誘導ガイド10の総質量はなるべく小さいことが望ましい。   Further, by providing the H-shaped steels 12, 12,..., The total mass of the steel plate guide 10 itself can be reduced while the steel plate guide 10 is given rigidity. In order to install the steel sheet guide 10 in a state of being suspended on the hot rolled steel sheet production line 1, it is desirable that the total mass of the steel sheet guide 10 is as small as possible.

本発明に用いることができる板状体は、熱間圧延鋼板製造ライン上を搬送されてくる鋼板の衝突による衝撃に耐えうる板状の部材であれば、特に限定されない。この板状体の具体例としては、SS400といった一般的な材質の鋼板を挙げることができる。また、この板状体の大きさについては、設置される熱間圧延鋼板製造ラインに基本的に依存するが、横幅は熱間圧延鋼板製造ラインの横幅と同じ程度、縦幅は1500〜2500mm程度あればよい。さらに、この板状体の厚さは、強度の観点からは25mm以上であることが好ましく、質量の観点からは40mm以下であることが好ましい。   The plate-like body that can be used in the present invention is not particularly limited as long as it is a plate-like member that can withstand an impact caused by a collision of a steel plate conveyed on a hot-rolled steel plate production line. As a specific example of this plate-like body, a general steel plate such as SS400 can be cited. Further, the size of the plate-like body basically depends on the hot rolled steel sheet production line to be installed, but the width is the same as the width of the hot rolled steel sheet production line, and the vertical width is about 1500 to 2500 mm. I just need it. Furthermore, the thickness of the plate-like body is preferably 25 mm or more from the viewpoint of strength, and is preferably 40 mm or less from the viewpoint of mass.

一方、本発明に用いることができる裏打ち材としては、上述したように、H形鋼を用いることが好ましく、その材質は特に限定されない。ただし、裏打ち材としてH形鋼を用いる場合、縦方向に3以上、横方向にも3以上用いることが好ましい。かかる形態とすることによって、鋼板誘導ガイドの縦方向および横方向の剛性を確保することがきる。さらに、裏打ち材と板状体とはボルトによって接続することが好ましい。溶接により接合することも可能であるが、板状体には鋼板が衝突するため、頻繁にメインテナンスを行う必要があり、溶接による接合であると板状体のメインテナンスが困難になる。   On the other hand, as the backing material that can be used in the present invention, as described above, H-shaped steel is preferably used, and the material is not particularly limited. However, when using H-section steel as the backing material, it is preferable to use 3 or more in the longitudinal direction and 3 or more in the lateral direction. By adopting such a configuration, it is possible to ensure the rigidity in the vertical direction and the horizontal direction of the steel sheet guide. Further, the backing material and the plate-like body are preferably connected by bolts. Although it is possible to join by welding, since the steel plate collides with the plate-like body, it is necessary to frequently perform maintenance. If the joining is performed by welding, it becomes difficult to maintain the plate-like body.

2.熱間矯正機
本発明の熱間矯正機には、鋼板入り側に上記本発明の鋼板誘導ガイドが備えられる。かかる形態とすることによって、上述したように、反りを有する鋼板でも一旦停止および搬送方向の逆方向への引抜きを行わず、安定的に熱間矯正機へ導入することができる。したがって、本発明の熱間矯正機によれば、熱間矯正機に鋼板を導入する前にその鋼板の反りを除去するために要していた時間を短縮することができ、鋼板の製造能率の向上を図ることができる。
2. Hot straightening machine The hot straightening machine of the present invention is provided with the steel sheet guide according to the present invention on the steel sheet containing side. By setting it as this form, as mentioned above, even if it has a steel plate which has curvature, it can be stably introduced into a hot straightening machine, without once stopping and pulling out in the reverse direction of a conveyance direction. Therefore, according to the hot straightening machine of the present invention, the time required to remove the warpage of the steel sheet before introducing the steel sheet into the hot straightening machine can be shortened, and the production efficiency of the steel sheet can be reduced. Improvements can be made.

3.熱間圧延鋼板製造ライン
図3を参照しつつ、本発明の熱間圧延鋼板製造ラインについて具体的に説明する。
3. Hot Rolled Steel Plate Production Line The hot rolled steel plate production line of the present invention will be specifically described with reference to FIG.

図3に示すように、本発明の熱間圧延鋼板製造ライン30は、熱間圧延機31、鋼板入り側に鋼板誘導ガイド10を備えた第一熱間矯正機32、冷却装置33、および、鋼板入り側に鋼板誘導ガイド10を備えた第二熱間矯正機34が、この順で配列されている。   As shown in FIG. 3, the hot rolled steel sheet production line 30 of the present invention includes a hot rolling mill 31, a first hot straightening machine 32 provided with a steel sheet guide 10 on the steel sheet entrance side, a cooling device 33, and The 2nd hot straightening machine 34 provided with the steel plate induction | guidance | derivation guide 10 in the steel-sheet entrance side is arranged in this order.

熱間圧延鋼板製造ライン30では、図3(a)に示すように、熱間圧延機31による圧延工程を経た鋼板35が、反り有した状態で搬送され、第一熱間矯正機32前の鋼板誘導ガイド10に衝突する。そして、鋼板誘導ガイド10に衝突した鋼板35は、そこである程度反りが除去されて、図3(b)に示すように、第一熱間矯正機32へと導入される。さらに、鋼板35は、冷却装置33による冷却工程を経て、図3(c)に示すように、反りを有した状態で、第二熱間矯正機34前の鋼板誘導ガイド10に衝突する。そして、鋼板誘導ガイド10に衝突した鋼板35は、そこである程度反りが除去されて、図3(d)に示すように、第二熱間矯正機34へと導入される。   In the hot rolled steel sheet production line 30, as shown in FIG. 3A, the steel sheet 35 that has undergone the rolling process by the hot rolling mill 31 is conveyed in a warped state, and before the first hot straightening machine 32. Collides with the steel plate guide 10. Then, the steel plate 35 that has collided with the steel plate guide 10 is removed to some extent, and is introduced into the first hot straightening machine 32 as shown in FIG. Further, the steel plate 35 undergoes a cooling process by the cooling device 33 and collides with the steel plate guide 10 in front of the second hot straightening machine 34 with a warp as shown in FIG. Then, the steel plate 35 that has collided with the steel plate guide 10 is removed to some extent, and is introduced into the second hot straightening machine 34 as shown in FIG.

このように、本発明の熱間圧延鋼板製造ラインでは、熱間圧延機および冷却装置を経て反りを有した状態で熱間矯正機前まで搬送されてきた鋼板であっても、その鋼板の一旦停止および搬送方向の逆方向への引抜きを行わず、安定的に熱間矯正機へ導入することができるため、鋼板の反りを除去するために要していた時間を短縮することができ、鋼板の製造能率の向上を図ることができる。   Thus, in the hot-rolled steel sheet production line of the present invention, even a steel sheet that has been conveyed to the front of the hot straightening machine in a state having warpage through a hot rolling mill and a cooling device, The time required to remove the warpage of the steel sheet can be shortened because it can be stably introduced into the hot straightening machine without stopping and pulling out in the reverse direction of the conveying direction. The production efficiency can be improved.

なお、以上では、第一熱間矯正機および第二熱間矯正機の両方に鋼板誘導ガイドを備えた熱間圧延鋼板製造ラインについて説明したが、鋼板の反りが大きくなければ、いずれか一方の熱間矯正機の鋼板入り側に鋼板誘導ガイドが備えられていてもよい。   In the above, the hot-rolled steel sheet production line provided with the steel sheet induction guide in both the first hot straightening machine and the second hot straightening machine has been described. A steel sheet guide may be provided on the steel sheet entering side of the hot straightening machine.

熱間圧延鋼板製造ラインにおいて、冷却装置の後に、ローラレベラーを備える熱間矯正機を設置し、該熱間矯正機の鋼板入り側に本発明の鋼板誘導ガイドを設置して、鋼板の反り矯正を行うと共に平坦度を矯正した。冷却工程を経た鋼板は反りを有していたが、いずれの鋼板についても鋼板誘導ガイドによりローラレベラーへと導入され、ローラレベラーで平坦度が矯正されることにより平坦度の高い鋼板が得られた。なお、鋼板誘導ガイドを設置するに当たり、その設置角度を水平方向に対して、10°、20°、30°と変化させ、鋼板の矯正を行ったが、いずれの角度においても鋼板が鋼板誘導ガイドによりローラレベラーに導入され、平坦度の高い鋼板が得られた。   In a hot rolled steel sheet production line, a hot straightening machine equipped with a roller leveler is installed after the cooling device, and the steel sheet guide of the present invention is installed on the steel sheet entering side of the hot straightening machine to correct the warpage of the steel sheet. And flatness was corrected. The steel plates that had undergone the cooling process had warpage, but all the steel plates were introduced into the roller leveler by the steel plate induction guide, and the flatness was corrected by the roller leveler, and a high flatness steel plate was obtained. . In installing the steel plate guide, the installation angle was changed to 10 °, 20 °, and 30 ° with respect to the horizontal direction to correct the steel plate. However, the steel plate was guided at any angle. Was introduced into the roller leveler, and a steel plate with high flatness was obtained.

以上、現時点において、もっとも、実践的であり、かつ、好ましいと思われる実施形態に関連して本発明を説明したが、本発明は、本願明細書中に開示された実施形態に限定されるものではなく、請求の範囲及び明細書全体から読み取れる発明の要旨あるいは思想に反しない範囲で適宜変更可能であり、そのような変更を伴う鋼板誘導ガイド、該鋼板誘導ガイドを備えた熱間矯正機、および該熱間矯正機を備えた熱間圧延鋼板製造ラインもまた本発明の技術的範囲に包含されるものとして理解されなければならない。   While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. Rather, it can be changed as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification, and a steel sheet guide with such a change, a hot straightening machine equipped with the steel sheet guide, And a hot-rolled steel sheet production line equipped with the hot straightening machine should also be understood as being included in the technical scope of the present invention.

本発明の鋼板誘導ガイドを備える熱間圧延鋼板製造ラインの一部を概略的に示す図である。It is a figure which shows roughly a part of hot-rolled steel plate manufacturing line provided with the steel plate induction guide of this invention. 本発明の鋼板誘導ガイドを概略的に示す3面図である。It is a 3rd view which shows the steel plate induction guide of this invention roughly. 本発明の熱間圧延鋼板製造ラインを概略的に示す図である。It is a figure which shows roughly the hot rolled steel plate manufacturing line of this invention. 鋼板入り側にノックダウンロールを備える従来の熱間圧延鋼板製造ラインの一部を概略的に示す図である。It is a figure which shows roughly a part of conventional hot-rolled steel plate manufacturing line provided with a knock-down roll on the steel-plate-entry side.

符号の説明Explanation of symbols

1 熱間圧延鋼板製造ライン
2 熱間矯正機
3 鋼板
10 鋼板誘導ガイド
11 板状体
12 裏打ち材(H形鋼)
30 熱間圧延鋼板製造ライン
31 熱間圧延機
32 第一熱間矯正機
33 冷却装置
34 第二熱間矯正機
40 ノックダウンロール
41 熱間圧延鋼板製造ライン
42 熱間矯正機
43 鋼板
DESCRIPTION OF SYMBOLS 1 Hot rolled steel plate production line 2 Hot straightening machine 3 Steel plate 10 Steel plate induction guide 11 Plate body 12 Backing material (H-section steel)
30 Hot Rolled Steel Sheet Production Line 31 Hot Rolling Machine 32 First Hot Straightening Machine 33 Cooling Device 34 Second Hot Straightening Machine 40 Knock Down Roll 41 Hot Rolled Steel Sheet Production Line 42 Hot Straightening Machine 43 Steel Sheet

Claims (4)

熱間圧延鋼板製造ラインに備えられる熱間矯正機の鋼板入り側に設置され、鋼板を前記熱間矯正機に導入するために用いる鋼板誘導ガイドであって、
板状体と該板状体の裏面に設置される裏打ち材とを備えることを特徴とする、鋼板誘導ガイド。
It is a steel plate induction guide that is installed on the steel sheet entering side of a hot straightening machine provided in a hot rolled steel sheet production line, and is used to introduce a steel sheet into the hot straightening machine,
A steel plate guide, comprising a plate-like body and a backing material installed on the back surface of the plate-like body.
前記裏打ち材が、前記熱間圧延鋼板製造ラインの幅方向に略平行な方向に配置されたH形鋼、および前記熱間圧延鋼板製造ラインの長手方向に略平行な方向に配置されたH形鋼であることを特徴とする、請求項1に記載の鋼板誘導ガイド。 The backing material is H-shaped steel arranged in a direction substantially parallel to the width direction of the hot-rolled steel sheet production line, and H-shape arranged in a direction substantially parallel to the longitudinal direction of the hot-rolled steel sheet production line. The steel sheet guide according to claim 1, wherein the steel sheet guide is made of steel. 鋼板入り側に請求項1または2に記載の鋼板誘導ガイドを備えた、熱間矯正機。 A hot straightening machine provided with the steel sheet guide according to claim 1 or 2 on the steel sheet containing side. 熱間圧延機、第一熱間矯正機、冷却装置、および、第二熱間矯正機が、この順に配列され、前記第一熱間矯正機および/または前記第二熱間矯正機が請求項3に記載の熱間矯正機であることを特徴とする、熱間圧延鋼板製造ライン。 A hot rolling mill, a first hot straightening machine, a cooling device, and a second hot straightening machine are arranged in this order, and the first hot straightening machine and / or the second hot straightening machine is claimed. A hot-rolled steel sheet production line, which is the hot straightening machine according to claim 3.
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