JPH06297003A - Manufacture of wide flange shape having round corners at the tip of flange and line of hot rolling devices therefor - Google Patents
Manufacture of wide flange shape having round corners at the tip of flange and line of hot rolling devices thereforInfo
- Publication number
- JPH06297003A JPH06297003A JP8734793A JP8734793A JPH06297003A JP H06297003 A JPH06297003 A JP H06297003A JP 8734793 A JP8734793 A JP 8734793A JP 8734793 A JP8734793 A JP 8734793A JP H06297003 A JPH06297003 A JP H06297003A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- flange
- shaped
- rolls
- mill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は橋梁材、造船材等に使用
されるフランジ先端部Ｒ付ＣＴ形鋼の製造手段に関わり
更に詳しくは、ＣＴ形鋼の素材となる圧延Ｈ形鋼の圧延
方法および、その圧延装置列に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method of CT section steel with a flange tip R used for bridge materials, shipbuilding materials, etc. More specifically, rolling of H section steel as a material for CT section steel A method and its rolling mill train.
【０００２】[0002]
【従来の技術】熱間圧延法で製造されるＨ形鋼は一般の
建築構造用として使用される他に、Ｈ形鋼のウェブ部を
製品の長さ方向に２分割し、橋梁もしくは造船用ＣＴ形
鋼（以下、ＣＴ形鋼と言う）に用いることは周知のとお
りである。造船材に用いるＣＴ形鋼はＪＩＳで定められ
た各種の規格を満足する必要があるが、特に圧延造形上
で問題になるのはフランジ先端部の形状である。即ち、
フランジ先端部の塗料付着性を向上させるとともに、塗
料のハゲ落ち防止のために、図７に示すようにフランジ
先端内側は所定の円弧Ｒ1 に形成し、フランジ先端外側
の円弧Ｒ2 も所定の円弧に形成することが望まれてい
る。2. Description of the Related Art The H-section steel manufactured by the hot rolling method is used not only for general building structures, but also for dividing a web section of the H-section steel into two parts in the length direction of the product for bridge or shipbuilding. It is well known to use it for CT section steel (hereinafter referred to as CT section steel). The CT shaped steel used as a shipbuilding material needs to satisfy various standards defined by JIS, but the shape of the flange tip portion becomes a problem particularly in roll forming. That is,
In order to improve the paint adhesion of the flange tip and to prevent the paint from falling off, the inside of the flange tip is formed into a predetermined arc R 1 as shown in FIG. 7, and the arc R 2 outside the flange tip is also specified. It is desired to form an arc.
【０００３】ＣＴ形鋼の素材となるＨ形鋼の製造は一般
にユニバーサル圧延法で行われているが、前記のフラン
ジ先端部の形状を改善するための手段として、本願出願
人は先に特公平２−１５２８１号公報の技術を提案し
た。図５はその従来法を実施する圧延ラインの例を示
し、粗圧延機１、中間ユニバーサル圧延機２、エッジャ
ー３および仕上ユニバーサル圧延機４から構成されてい
る。図６（ａ）、（ｂ）、（ｃ）はその製造手段を示
し、粗圧延機１で圧延された粗形鋼片５は水平ロールＨ
と竪ロールＶからなる中間ユニバーサル圧延機２で中間
圧延材６とし、続いてエッジャー３でフランジ端部を成
形し、仕上ユニバーサル圧延機４で仕上圧延し、図６
（ｃ）のＨ形鋼９の製品とする。ＣＴ形鋼１０はＨ形鋼
９のウェブを仮想線で示す長さ方向に２分割して最終製
品とするものである。この従来法の特徴は、前記中間ユ
ニバーサル圧延機２の竪ロールＶに被圧延材のフランジ
先端外側の角落とし用段付部Ｑ1 を設け、またエッジャ
ー３の水平ロールＥに段付部Ｑ2 、更に仕上ユニバーサ
ル圧延機４の水平ロールＨにも段付部Ｑ3 を設け、フラ
ンジ先端部を滑らかな円弧状に形成することにあった。
この従来手段によってフランジ先端部の形状はかなり改
善されたが、圧延中の被圧延材のメタルフローが適切で
ない場合、仕上ユニバーサル圧延機４の水平ロールＨと
竪ロールＶ’との隙間ｐから「噛み出し」が生ずるかも
しくは、反対に肉量が不足した場合には「角落ち」と称
される先尖り状の形状不良が発生することがあった。ま
た、中間ユニバーサル圧延機２および仕上ユニバーサル
圧延機４の上下水平ロールの胴幅Ｓ1 、Ｓ2 は一定であ
るので、ロールの摩耗が進行すると胴幅Ｓ1 、Ｓ2 は小
さくなり、寸法公差を満足できなくなるとロール交換が
必要となりロール原単位は低下し、またロール交換のた
め作業能率が低下する難点があった。The H-section steel, which is the raw material for the CT-section steel, is generally manufactured by the universal rolling method. As a means for improving the shape of the above-mentioned flange tip portion, the applicant of the present application has previously mentioned that it is fair. The technique of Japanese Patent No. 2-15281 was proposed. FIG. 5 shows an example of a rolling line for carrying out the conventional method, which comprises a rough rolling mill 1, an intermediate universal rolling mill 2, an edger 3 and a finishing universal rolling mill 4. 6 (a), (b), and (c) show the manufacturing means, and the rough shaped steel slab 5 rolled by the rough rolling mill 1 is a horizontal roll H.
The intermediate universal rolling mill 2 composed of a vertical roll V and an intermediate universal rolling mill 2 is used to form an intermediate rolled material 6, and subsequently the flange end is formed by the edger 3 and finish rolling is performed by the finish universal rolling mill 4.
(C) H-section steel 9 product. The CT section steel 10 is obtained by dividing the web of the H section steel 9 into two in the length direction indicated by the imaginary line to obtain the final product. This conventional method is characterized in that a vertical roll V of the intermediate universal rolling mill 2 is provided with a step portion Q 1 for corner removal outside the flange tip of the material to be rolled, and a horizontal roll E of the edger 3 is provided with a step portion Q 2. Further, the horizontal roll H of the finish universal rolling mill 4 is also provided with the stepped portion Q 3 to form the flange tip end in a smooth arc shape.
Although the shape of the flange tip portion is considerably improved by this conventional means, when the metal flow of the material to be rolled during rolling is not appropriate, from the gap p between the horizontal roll H and the vertical roll V ′ of the finishing universal rolling mill 4, When "biting out" occurs or, on the contrary, when the amount of meat is insufficient, a pointed shape defect called "corner drop" may occur. Further, since the body widths S 1 and S 2 of the upper and lower horizontal rolls of the intermediate universal rolling mill 2 and the finishing universal rolling mill 4 are constant, the body widths S 1 and S 2 become smaller as the wear of the rolls progresses, and the dimensional tolerances are reduced. If it becomes impossible to satisfy the above condition, it is necessary to replace the rolls, the roll unit consumption decreases, and the work efficiency decreases due to the roll replacement.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記従来のユ
ニバーサル圧延法によるＨ形鋼の製造方法における問題
点を解消し、フランジ先端部の噛み出しまたは肉不足が
ない良好な円弧形状の形成と、ロール原単位と圧延能率
の改善を図ることを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the problems in the conventional method for manufacturing H-section steel by the universal rolling method, and forms a good arc shape without biting out of the flange tip or lack of thickness. The purpose is to improve the roll unit and rolling efficiency.
【０００５】[0005]
【課題を解決するための手段】本発明の要旨は、 矩形断面のスラブもしくは粗型鋼片を二重粗圧延機
によってＨ形の粗造形材に粗造形し、続いて粗整形圧延
機と中間ユニバーサル圧延機とのリバース圧延によって
所定のウェブ厚みとフランジ幅のＨ形中間材とした後、
上下ロールのロール胴幅が変更可能な二重中間整形圧延
機で前記Ｈ形中間材のフランジ先端部を円弧状に形成
し、続いてロール胴幅が変更可能な上下水平ロールを有
する仕上ユニバーサル圧延機で仕上圧延するＨ形鋼の熱
間圧延方法と、 複数の粗造形孔型を刻設した二重粗圧延機と、連続
圧延可能に相互に近接して配置された中間ユニバーサル
圧延機および粗整形圧延機と、ロール胴幅が変更可能な
上下ロールに凹溝が刻設され当該凹溝によってフランジ
先端部をＲ付形状に造形せしめる成形圧延機と、ロール
胴幅が変更可能な上下水平ロールを有する仕上ユニバー
サル圧延機とを順に配列した溝形鋼の熱間圧延装置列
と、 フランジ成形圧延機の上下ロールの軸芯が圧延方向
に水平な面内で且つ圧延方向に垂直な面に対して所定の
角度θＨに調整可能な一対の斜行ロールである前記記
載のＨ形鋼の熱間圧延装置列にある。The gist of the present invention is that a slab having a rectangular cross section or a rough steel slab is roughly shaped into an H-shaped rough shaped material by a double roughing mill, and subsequently, a rough shaping rolling mill and an intermediate universal mill. After making an H-shaped intermediate material with a predetermined web thickness and flange width by reverse rolling with a rolling mill,
A universal universal finishing roll having upper and lower horizontal rolls in which the flange tip of the H-shaped intermediate material is formed into an arc shape by a double intermediate shaping rolling machine in which the roll body widths of the upper and lower rolls can be changed. Hot rolling method for H-section steel for finish rolling with a rolling mill, a double rough rolling mill in which a plurality of rough shaping hole cavities are engraved, an intermediate universal rolling mill and a rough rolling mill arranged close to each other for continuous rolling. A shaping and rolling machine, a forming and rolling machine in which a concave groove is formed in upper and lower rolls whose roll width can be changed, and a flange tip portion is shaped into an R shape by the concave groove, and a vertical horizontal roll whose roll width can be changed A row of rolling mills for grooved steel in which a finishing universal rolling mill having the above is sequentially arranged, and the axial center of the upper and lower rolls of the flange forming rolling mill is in a plane horizontal to the rolling direction and perpendicular to the rolling direction. To a predetermined angle θH In the hot rolling mill train for H-section steel described above, which is a pair of adjustable skew rolls.
【０００６】以下、本発明を図面に基づき詳細に説明す
る。The present invention will be described in detail below with reference to the drawings.
【０００７】図１は本発明装置列を示し、二重粗圧延機
１は矩形断面のスラブもしくは粗形鋼片を粗造形材に粗
圧延する。中間ユニバーサル圧延機２は、粗整形圧延機
３と連続圧延可能に近接して配置され、リバース圧延に
よって所定のウェブ厚みとフランジ幅の中間材とする。
フランジ成形圧延機２０は後で詳細に説明するとおり本
発明独自のものであり、上下ロールのロール胴幅が変更
可能に構成され、前記中間材のフランジ先端部を円弧状
に形成するために用いるものである。仕上ユニバーサル
圧延機２１は左右竪ロールとロール胴幅が変更可能な上
下水平ロールを有する。なお、中間ユニバーサル圧延機
２と粗整形圧延機３とを１組とする中間圧延工程は、必
要に応じて複数組設けることは任意である。FIG. 1 shows an apparatus train of the present invention, in which a double rough rolling machine 1 roughly rolls a slab having a rectangular cross section or a rough shaped steel piece into a rough shaped material. The intermediate universal rolling mill 2 is disposed in close proximity to the rough shaping rolling mill 3 so that continuous rolling is possible, and reverse rolling is performed to form an intermediate material having a predetermined web thickness and flange width.
The flange forming and rolling machine 20 is unique to the present invention as will be described later in detail, is configured such that the roll body width of the upper and lower rolls can be changed, and is used to form the flange tip end portion of the intermediate material into an arc shape. It is a thing. The finish universal rolling mill 21 has vertical left and right rolls and upper and lower horizontal rolls whose roll body width can be changed. The intermediate rolling step in which the intermediate universal rolling mill 2 and the rough shaping rolling mill 3 constitute one set may optionally be provided in plural sets.
【０００８】次に本発明法の詳細を図２に示す各圧延機
のロール孔型例で説明する。Next, the details of the method of the present invention will be described with reference to a roll hole type example of each rolling mill shown in FIG.
【０００９】矩形断面のスラブ４０は本発明で用いる素
材であり、図示を省略したスラブ幅方向のエッジングを
経て二重粗圧延機１で粗圧延される。二重粗圧延機１は
上下水平ロール１ａ、１ｂからなり、ロールに刻設され
た複数個の粗造形孔型Ｉ、II、III 、IVによるリバース
圧延によって断面がＨ形状の粗造形材５に粗造形する。The slab 40 having a rectangular cross section is a material used in the present invention, and is roughly rolled by the double roughing mill 1 through edging in the slab width direction (not shown). The double rough rolling mill 1 is composed of upper and lower horizontal rolls 1a and 1b, and is made into a rough shaped material 5 having an H-shaped cross section by reverse rolling by a plurality of rough shaping hole dies I, II, III and IV engraved on the rolls. Coarse modeling.
【００１０】続いて、粗造形材５は上下水平ロール２
ａ、２ｂと左右竪ロール２ｃで構成される中間ユニバー
サル圧延機２と、上下水平ロール３ａ、３ｂからなる粗
整形圧延機３とでリバース圧延されて中間材を得る。な
お、中間ユニバーサル圧延機２と粗整形圧延機３とを近
接してリバース圧延と連続圧延可能に配置するのは、中
間ユニバーサル圧延機の各パス圧延後のフランジ外角部
の噛み出しの消去を能率良く行うためである。また、本
発明における中間ユニバーサル圧延機と粗整形圧延機か
らなる中間圧延工程は、図示例のとおり中間ユニバーサ
ル圧延機２１と粗整形圧延機３１とを１組とする第２の
中間圧延工程を設けることは任意である。中間ユニバー
サル圧延工程の組数を１組あるいは２組使用するかはパ
ススケジュール、圧延機能力等の条件により任意に選択
できる。この中間圧延工程において、圧延最終製品とし
てのＨ形鋼ウェブ厚みとフランジ幅が造りこまれた中間
材７に成形する。Subsequently, the rough molding material 5 is the upper and lower horizontal rolls 2.
a, 2b and the left and right vertical rolls 2c, the intermediate universal rolling mill 2 and the rough shaping rolling mill 3 including the upper and lower horizontal rolls 3a, 3b perform reverse rolling to obtain an intermediate material. The intermediate universal rolling mill 2 and the rough shaping rolling mill 3 are arranged in close proximity to each other so that reverse rolling and continuous rolling can be performed efficiently in order to eliminate the biting out of the outer corner portion of the flange after each pass rolling of the intermediate universal rolling mill. This is to do well. Further, the intermediate rolling process including the intermediate universal rolling mill and the rough shaping rolling mill in the present invention is provided with a second intermediate rolling process in which the intermediate universal rolling mill 21 and the rough shaping rolling mill 31 are set as one set as shown in the illustrated example. That is optional. Whether to use one set or two sets in the intermediate universal rolling process can be arbitrarily selected according to conditions such as a pass schedule and rolling function. In this intermediate rolling step, an H-shaped steel web as a final rolling product is formed into an intermediate material 7 having a thickness and a flange width built therein.
【００１１】さて、次に前記中間材７はフランジ成形圧
延機２０によってフランジ部の成形を行う。フランジ成
形圧延機２０の上ロール２０ａと下ロール２０ｂは各
々、左右方向にロール胴幅が任意に変更可能に構成さ
れ、上下ロール２０ａ、２０ｂには凹溝２０ｃが刻設さ
れている。図４は凹溝２０ｃの部分拡大図であり、凹溝
の孔底は円弧状に形成され、その半径Ｒは仮想線で示す
当該ロールで圧延するＨ形鋼のうちフランジ厚みｔ1 が
最も厚い製品サイズ８ａのＲに相当する大きさに設定さ
れている。Next, the flange portion of the intermediate material 7 is formed by the flange forming and rolling machine 20. Each of the upper roll 20a and the lower roll 20b of the flange forming mill 20 is configured such that the width of the roll can be arbitrarily changed in the left-right direction, and the upper and lower rolls 20a and 20b are provided with concave grooves 20c. FIG. 4 is a partially enlarged view of the concave groove 20c. The hole bottom of the concave groove is formed in an arc shape, and its radius R is the thickest flange thickness t 1 of the H-shaped steel rolled by the roll indicated by a virtual line. It is set to a size corresponding to R of the product size 8a.
【００１２】図３はフランジ成形圧延機２０の別の実施
態様を示し、上下ロール２０ａ、２０ｂを（下ロール２
０ｂは図面では上ロール２０ａに重なるので図示を省略
している）その軸芯Ｓが圧延方向（矢印方向）に水平な
面内で且つ圧延方向に垂直な面Ｐに対し、所定の角度θ
Ｈに調整可能な斜行ロールとしたものである。このよう
な斜行ロール方式は本願出願人がＨ形鋼のウェブ高さ拡
大の手段として、例えば特公平３−４２１２２号公報で
提案した圧延手段と同等のものである。なお、ウェブ高
さ拡大を必要としない場合は上下ロール２０ａ、２０ｂ
の軸芯Ｓを圧延方向に垂直に構成したフランジ成形圧延
機を用いてもよいことは勿論である。FIG. 3 shows another embodiment of the flange forming and rolling mill 20, in which the upper and lower rolls 20a and 20b (the lower roll 2
0b is omitted because it overlaps with the upper roll 20a in the drawing.) The axis S has a predetermined angle θ with respect to a plane P horizontal to the rolling direction (arrow direction) and perpendicular to the rolling direction.
It is a skew roll that can be adjusted to H. Such an oblique roll method is equivalent to the rolling means proposed by the applicant of the present application, for example, in Japanese Patent Publication No. 3-42122 as a means for expanding the web height of H-section steel. If it is not necessary to increase the web height, the upper and lower rolls 20a, 20b
It is needless to say that a flange forming and rolling machine in which the axis S of the above is configured to be perpendicular to the rolling direction may be used.
【００１３】仕上ユニバーサル圧延機２１は、ロール胴
幅が変更可能な上水平ロール２１ａ、下水平ロール２１
ｂおよび左右竪ロール２１ｃからなり、被圧延材のウェ
ブ両端を上下水平ロール２１ａ、２１ｂで挟持しつつ左
右竪ロール２１ｃによってフランジ面を押圧し、ウェブ
面に対してフランジ外面が直交するように仕上圧延し、
最終圧延製品のＨ形鋼９とする。The finish universal rolling mill 21 has an upper horizontal roll 21a and a lower horizontal roll 21 whose roll body width can be changed.
b and left and right vertical rolls 21c, both ends of the web of the material to be rolled are sandwiched by upper and lower horizontal rolls 21a and 21b, and the left and right vertical rolls 21c press the flange surface so that the flange outer surface is orthogonal to the web surface. Rolled and
The final rolled product is H-section steel 9.
【００１４】[0014]
【作用・実施例】二重粗圧延機１によってＨ形の粗造形
材５に粗造形し、粗整形圧延機３、（３１）および中間
ユニバーサル圧延機２、（３１）とのリバース圧延によ
って所定のウェブ厚みと幅のＨ形中間材７とする工程ま
では前記従来手段の特公平２−１５２８１号公報の技術
と同様である。本発明はこの中間圧延以降の作用に特徴
を有するものである。即ち、フランジ成形圧延機２０の
凹溝を有する上下ロール２０ａ、２０ｂとで形成される
孔型は、いわゆる袋孔型であるので被圧延材のフランジ
部は過不足のない成形が可能となる。特に、上下ロール
２０ａ、２０ｂに形成した凹溝の孔底は適切なＲを付与
しているため、フランジ先端部の形状は格段に改善さ
れ、従来のユニバーサル圧延法でのフランジ先端部の噛
み出しや肉不足による「角落ち」等の形状不良の発生を
防止できる。図４において、当該ロールで圧延するＨ形
鋼のうちフランジ厚みｔ2 が最も薄い製品の場合でも、
同一寸法の孔底Ｒが共用できることも確認した。例え
ば、一般的なＣＴ形鋼製品シリーズのうち、４００×１
００シリーズ（ウェブ高さ×フランジ幅）の場合、この
シリーズにはウェブ厚みとフランジ厚みが異なる４種の
サイズが含まれるが、フランジ厚みの最小は１５ミリ、
最大厚みは１８ミリでその差は３ミリであり、フランジ
最大厚みの孔底Ｒに設定しておいても特に問題はなかっ
た。[Operations and Examples] The rough roughing material 5 having an H shape is roughly shaped by the double roughing mill 1, and predetermined by reverse rolling with the rough shaping mills 3, (31) and the intermediate universal mills 2, (31). The process up to the step of forming the H-shaped intermediate member 7 having the web thickness and width is the same as the technique of the Japanese Patent Publication No. 2-15281 of the conventional means. The present invention is characterized by the operation after the intermediate rolling. That is, since the hole type formed by the upper and lower rolls 20a and 20b having the concave grooves of the flange forming and rolling machine 20 is a so-called bag hole type, the flange portion of the material to be rolled can be formed without excess or deficiency. In particular, since the hole bottoms of the concave grooves formed in the upper and lower rolls 20a and 20b are given an appropriate radius R, the shape of the flange tip portion is remarkably improved, and the flange tip portion bites out in the conventional universal rolling method. It is possible to prevent the occurrence of shape defects such as “corner drop” due to lack of meat and meat. In FIG. 4, even in the case of a product having the thinnest flange thickness t 2 among H-section steels rolled by the roll,
It was also confirmed that the hole bottom R having the same size can be shared. For example, 400 × 1 in the general CT section product series
In the case of the 00 series (web height x flange width), this series includes four sizes with different web thickness and flange thickness, but the minimum flange thickness is 15 mm,
The maximum thickness was 18 mm and the difference was 3 mm, and there was no particular problem even if the hole bottom R having the maximum flange thickness was set.
【００１５】更にフランジ先端部Ｒの仕上がり形状を更
に改善する手段として、図８に示す仕上ユニバーサル圧
延機２１の左右の竪ロール２１Ｃのロール側面部を、被
圧延材のフランジ先端およびフランジ外面の形状に倣っ
た凹状の溝に形成することは効果的である。As means for further improving the finished shape of the flange tip portion R, the roll side surfaces of the left and right vertical rolls 21C of the finish universal rolling mill 21 shown in FIG. It is effective to form a concave groove following the above.
【００１６】また、本発明におけるフランジ成形圧延機
２０は左右のロール胴幅を任意に変更可能としているの
でＨ形鋼のウェブ高さが変わっても、フランジ成形圧延
機２０のロール組替えの必要はない。また、斜行ロール
方式を採用することにより、中間ユニバーサル圧延機２
（２１）と粗整形圧延機３（３１）の水平ロール胴幅が
摩耗しても、斜行ロール方式としたフランジ成形圧延機
２０の拡幅作用でその幅不足分を救済することができ
る。即ち、中間ユニバーサル圧延機２（２１）と粗整形
圧延機３（３１）の水平ロールの寿命延長が図れる。更
に、仕上げユニバーサル圧延機２１の上下水平ロール２
１ａ、２１ｂも胴幅変更可能としているので、サイズ変
更に伴うロール組替えが不用であることは、前記フラン
ジ成形圧延機の場合と同様である。Further, the flange forming rolling machine 20 of the present invention allows the left and right roll cylinder widths to be arbitrarily changed, so that even if the web height of the H-section steel changes, it is not necessary to reassemble the rolls of the flange forming rolling machine 20. Absent. Also, by adopting the skew roll system, the intermediate universal rolling mill 2
Even if (21) and the horizontal roll cylinder width of the rough shaping rolling mill 3 (31) are worn, the insufficient width can be relieved by the widening action of the flange forming rolling mill 20 of the oblique roll type. That is, the life of the horizontal rolls of the intermediate universal rolling mill 2 (21) and the rough shaping rolling mill 3 (31) can be extended. Further, the upper and lower horizontal rolls 2 of the finishing universal rolling mill 21
Since the cylinder widths of 1a and 21b are also changeable, it is the same as in the case of the above flange forming and rolling mill that the roll combination due to the size change is unnecessary.
【００１７】なお、フランジ成形圧延機２０と仕上げユ
ニバーサル圧延機２１との水平ロールを胴幅変更可能に
設けたことによって、次のような圧延方式を採用し圧延
能率の向上を図ることが可能である。即ち、中間ユニバ
ーサル圧延のリバース圧延過程において被圧延材の長さ
はパスを重ねる毎に伸びていくが、例えば中間ユニバー
サル圧延中の伸び長さが次段のフランジ成形圧延機およ
び仕上ユニバーサル圧延機と干渉する場合、フランジ成
形圧延機はロール胴幅を縮小あるいは拡大して空パスさ
せ、パスに支障の無い位置まで退避させる。この圧延方
式によると被圧延材１本の単重を大きくできるので生産
能率の向上を図ることができる。Since the horizontal rolls of the flange forming mill 20 and the finishing universal mill 21 are provided so that the cylinder width can be changed, the following rolling method can be adopted to improve the rolling efficiency. is there. That is, in the reverse rolling process of the intermediate universal rolling, the length of the material to be rolled grows with each pass, but for example, the elongation length during the intermediate universal rolling is the same as that of the flange forming rolling machine and the finishing universal rolling machine in the next stage. When there is interference, the flange forming and rolling mill reduces or enlarges the roll cylinder width to make an empty pass and retract it to a position where it does not interfere with the pass. According to this rolling method, the unit weight of one rolled material can be increased, so that the production efficiency can be improved.
【００１８】[0018]
【効果】本発明はＨ形鋼、特にＣＴ形鋼に供するための
Ｈ形鋼の製造において、フランジ先端部の形状は従来の
ユニバーサル圧延法に比較して「噛み出し」や「角落
ち」等の形状不良の発生はなくなり、更には寸法の異な
る製品シリーズを同一のロールで共用できるのでロール
原単位は格段に向上する。[Effect] In the production of H-section steel, especially H-section steel for use in CT section steel, the shape of the tip of the flange is "bent out", "corner drop", etc. as compared with the conventional universal rolling method. The occurrence of shape defects is eliminated, and product series with different dimensions can be shared by the same roll, so the roll unit consumption is greatly improved.
【図１】本発明装置列のレイアウトを示す略図。FIG. 1 is a schematic diagram showing the layout of an inventive device array.
【図２】本発明圧延法の圧延順序と孔型を示す略図。FIG. 2 is a schematic view showing a rolling sequence and a hole shape in the rolling method of the present invention.
【図３】本発明圧延装置列で用いる斜行式のフランジ成
形圧延機を用いた圧延状態を示す平面略図。FIG. 3 is a schematic plan view showing a rolling state using a skew type flange forming mill used in the rolling apparatus train of the present invention.
【図４】本発明装置列のフランジ成形圧延機の孔型部分
拡大図。FIG. 4 is an enlarged view of a hole-shaped portion of the flange forming and rolling machine of the device row of the present invention.
【図５】従来の溝形鋼圧延装置列のレイアウトを示す略
図。FIG. 5 is a schematic diagram showing a layout of a conventional channel steel rolling mill train.
【図６】（ａ）、（ｂ）、（ｃ）は従来の溝形鋼圧延手
段の説明図。6 (a), (b) and (c) are explanatory views of a conventional channel steel rolling means.
【図７】インバート製品の断面略図。FIG. 7 is a schematic cross-sectional view of an invert product.
【図８】ユニバーサル圧延機の左右竪ロールの説明図。FIG. 8 is an explanatory diagram of left and right vertical rolls of the universal rolling mill.
１…二重粗圧延機 ２…中間ユニバーサ
ル圧延機 ３…粗整形圧延機 ２０…フランジ成形
圧延機 ２１…仕上ユニバーサル圧延機 ２０ａ…フランジ成形圧延機の上ロール ２０ｂ…フランジ成形圧延機の下ロール ２０ｃ…凹溝1 ... Double rough rolling mill 2 ... Intermediate universal rolling mill 3 ... Rough shaping rolling mill 20 ... Flange forming rolling mill 21 ... Finishing universal rolling mill 20a ... Upper roll of flange forming rolling mill 20b ... Lower roll of flange forming rolling mill 20c … Concave groove
Claims (3)
重粗圧延機によってＨ形の粗造形材に粗造形し、続いて
粗整形圧延機と中間ユニバーサル圧延機とのリバース圧
延によって所定のウェブ厚みとフランジ幅のＨ形中間材
とした後、上下ロールのロール胴幅が変更可能な二重中
間整形圧延機で前記Ｈ形中間材のフランジ先端部を円弧
状に形成し、続いてロール胴幅が変更可能な上下水平ロ
ールを有する仕上ユニバーサル圧延機で仕上圧延するこ
とを特徴とするフランジ先端Ｒ付Ｈ形鋼の製造法。1. A slab having a rectangular cross section or a rough shaped steel slab is roughly shaped into an H-shaped rough shaped material by a double roughing mill, and then subjected to a predetermined rolling by a reverse rolling between a rough shaping rolling mill and an intermediate universal rolling mill. After forming the H-shaped intermediate material having the web thickness and the flange width, the flange tip of the H-shaped intermediate material is formed into an arc shape by a double intermediate shaping rolling machine capable of changing the roll body width of the upper and lower rolls, and then the roll is formed. A method for producing an H-section steel with a flange tip R, which comprises performing finish rolling with a finish universal rolling machine having upper and lower horizontal rolls with variable body widths.
機と、連続圧延可能に相互に近接して配置された中間ユ
ニバーサル圧延機および粗整形圧延機と、ロール胴幅が
変更可能な上下ロールに凹溝が刻設されたフランジ成形
圧延機と、ロール胴幅が変更可能な上下水平ロールを有
する仕上ユニバーサル圧延機とを順に配列したことを特
徴とするフランジ先端Ｒ付Ｈ形鋼の熱間圧延装置列。2. A double rough rolling machine in which a plurality of rough shaping hole dies are engraved, an intermediate universal rolling machine and a rough shaping rolling machine which are arranged in close proximity to each other for continuous rolling, and a roll cylinder width is changed. H type with flange tip R, characterized by sequentially arranging a flange forming and rolling machine in which concave grooves are engraved in possible upper and lower rolls, and a finish universal rolling machine having upper and lower horizontal rolls whose roll body width can be changed Steel hot rolling machine row.
が圧延方向に水平な面内で且つ圧延方向に垂直な面に対
して所定の角度θＨに調整可能な一対の斜行ロールであ
ることを特徴とする請求項２記載のフランジ先端Ｒ付Ｈ
形鋼の熱間圧延装置列。3. A pair of oblique rolls whose axial centers of upper and lower rolls of the flange forming and rolling machine are adjustable within a plane horizontal to the rolling direction and at a predetermined angle θH with respect to a plane vertical to the rolling direction. H with flange tip R according to claim 2
Rows of hot rolling equipment for shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8734793A JPH06297003A (en) | 1993-04-14 | 1993-04-14 | Manufacture of wide flange shape having round corners at the tip of flange and line of hot rolling devices therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8734793A JPH06297003A (en) | 1993-04-14 | 1993-04-14 | Manufacture of wide flange shape having round corners at the tip of flange and line of hot rolling devices therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06297003A true JPH06297003A (en) | 1994-10-25 |
Family
ID=13912347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8734793A Withdrawn JPH06297003A (en) | 1993-04-14 | 1993-04-14 | Manufacture of wide flange shape having round corners at the tip of flange and line of hot rolling devices therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06297003A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112409A (en) * | 1997-11-14 | 2000-09-05 | Cosma International Inc. | Roll forming utilizing splitting technology |
| JP2007331027A (en) * | 2005-11-15 | 2007-12-27 | Sumitomo Metal Ind Ltd | Method of manufacturing hot-rolled t-shape steel for hull reinforcing member and hot-rolled t-shape steel |
| JP2008246572A (en) * | 2007-03-30 | 2008-10-16 | Nippon Steel Corp | Structural member and its manufacturing method |
| JP2008254063A (en) * | 2007-04-09 | 2008-10-23 | Sumitomo Metal Ind Ltd | Hot rolled t-shaped steel |
| JP2010274269A (en) * | 2009-05-26 | 2010-12-09 | Kotobuki Sangyo Kk | Guide for rolling shape steel having flange |
-
1993
- 1993-04-14 JP JP8734793A patent/JPH06297003A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112409A (en) * | 1997-11-14 | 2000-09-05 | Cosma International Inc. | Roll forming utilizing splitting technology |
| JP2007331027A (en) * | 2005-11-15 | 2007-12-27 | Sumitomo Metal Ind Ltd | Method of manufacturing hot-rolled t-shape steel for hull reinforcing member and hot-rolled t-shape steel |
| JP2008246572A (en) * | 2007-03-30 | 2008-10-16 | Nippon Steel Corp | Structural member and its manufacturing method |
| JP2008254063A (en) * | 2007-04-09 | 2008-10-23 | Sumitomo Metal Ind Ltd | Hot rolled t-shaped steel |
| JP2010274269A (en) * | 2009-05-26 | 2010-12-09 | Kotobuki Sangyo Kk | Guide for rolling shape steel having flange |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0788501A (en) | Manufacture of intermediate rough shape billet for h-shape steel | |
| JPH06297003A (en) | Manufacture of wide flange shape having round corners at the tip of flange and line of hot rolling devices therefor | |
| JP3272862B2 (en) | Rolling method for H-section steel | |
| JP2530405B2 (en) | Method for hot rolling channel steel and rolling apparatus train | |
| JP3065877B2 (en) | Rough rolling method for H-shaped steel slab | |
| JP2681536B2 (en) | Channel rolling mill row | |
| JPH07178402A (en) | Production of shape steel for steel-made continuous wall | |
| JP3695289B2 (en) | Parallel flange channel steel with constant outer method and manufacturing method thereof | |
| JP3802744B2 (en) | Rolling method for section steel with flange | |
| JP3496554B2 (en) | Manufacturing method of channel steel, rough universal rolling mill and finish universal rolling mill | |
| JP2592562B2 (en) | Rolling mill train in section steel rolling | |
| JP3389831B2 (en) | Rolling method for channel steel | |
| JP2004322105A (en) | Method for manufacturing wide flange shape and grooved roll | |
| JP2522059B2 (en) | Method for hot rolling profile with flange | |
| JP3166656B2 (en) | Rolling method and rolling mill for section steel | |
| JP2577660B2 (en) | Hot rolling method for channel steel | |
| JP2712855B2 (en) | Rolling method for H-section steel | |
| JPH0675724B2 (en) | Method for manufacturing H-section steel | |
| JPH09168801A (en) | Method for rolling shape and device therefor | |
| JP2002028701A (en) | Method for rolling shape having flange and rolling device train | |
| JPH05269502A (en) | Method for hot rolling h-shape steel | |
| JP2000334502A (en) | Wide flange shape and its rolling method | |
| JPH1147803A (en) | Production of wide flange shape with small angular projection and beveling | |
| JP3027503B2 (en) | Rolling method for section steel | |
| JP2508873B2 (en) | Method for hot rolling profile with flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000704 |