JPH0538501A - Rolling method for sizing round steel bar - Google Patents
Rolling method for sizing round steel barInfo
- Publication number
- JPH0538501A JPH0538501A JP19196191A JP19196191A JPH0538501A JP H0538501 A JPH0538501 A JP H0538501A JP 19196191 A JP19196191 A JP 19196191A JP 19196191 A JP19196191 A JP 19196191A JP H0538501 A JPH0538501 A JP H0538501A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- diameter
- sizing
- roll
- pass
- 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.)
- Granted
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、圧延機列の下流側に設
置されて、上流側の圧延機列によって圧延された被圧延
材を、複数の寸法に整形する丸棒鋼のサイジング圧延方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sizing and rolling a round bar steel, which is installed on the downstream side of a rolling mill train and shapes the rolled material rolled by the upstream rolling mill train into a plurality of dimensions. .
【０００２】[0002]
【従来の技術】サイジング圧延を実施すると、整形しよ
うとする丸棒鋼の径に応じたカリバを有するロールに取
り替えることなく、サイジング圧延を行うロール間の間
隙を調整するだけで複数の径の丸棒鋼が製造可能とな
り、該製品径に応じたサイズ替えに要する圧延停止時間
が大幅に短縮できると共に、成形された丸棒鋼自体の寸
法精度も向上する。2. Description of the Related Art When sizing rolling is carried out, it is not necessary to replace it with a roll having a caliber corresponding to the diameter of the round steel bar to be shaped, and by simply adjusting the gap between the rolls for sizing rolling, the round steel bar having a plurality of diameters Can be manufactured, the rolling stop time required for changing the size according to the product diameter can be significantly reduced, and the dimensional accuracy of the formed round steel bar itself can be improved.
【０００３】前記のために実施されている従来のサイジ
ング圧延方法としては、素材の直径よりも大きい直径の
円弧を有するカリバを使用して、図３に示すように、２
ロール圧延機で圧下方向をずらしながら圧延する２ロー
ル法（図３（ａ）），３ロール圧延機で圧下方向をずら
しながら圧延する３ロール法（図３（ｂ）），若しくは
４ロール圧延機で圧下方向をずらして圧延する４ロール
法（図３（ｃ））が知られており、これらの方法は、図
に示されるように同一種類のロール圧延機で、圧下方向
を変更させながら複数パスの圧延にてサイジング圧延を
実施している。As a conventional sizing rolling method carried out for the above, a caliber having an arc having a diameter larger than the diameter of the raw material is used, and as shown in FIG.
A two-roll method (FIG. 3 (a)) in which rolling is performed while shifting the rolling direction, a three-roll method (FIG. 3 (b)) in which rolling is performed while shifting the rolling direction by a three-roll rolling mill, or a four-roll rolling machine A four-roll method (Fig. 3 (c)) in which rolling is performed by shifting the rolling direction is known, and as shown in the figure, these methods use the same type of roll rolling machine to change the rolling direction and Sizing rolling is performed by rolling the pass.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記の
ようなサイジング圧延方法では、同一形状のカリバで且
つロール間隙の変更だけで整形可能となる、整形された
丸棒鋼のサイズ範囲が狭いという問題がある。詳しく説
明すると、サイジング圧延における第２パス通過後の被
圧延材の形状を２ロール法と４ロール法で比較してみる
と、２ロール法では断面がやや四角形に近い円となり、
４ロール法ではやや八角形に近い円となり、２ロール法
のほうが偏径差が大きいため、許容可能な偏径差内にお
ける２ロール法での可能な製品径のサイズ範囲は、４ロ
ール法よりも小さくなる。ちなみに、偏径差０．５mm以
下の前記サイズ範囲の理論値は、２ロール法では１．７
mm，３ロール法では３．８mm，４ロールでは７mmであ
る。However, in the sizing rolling method as described above, there is a problem that the size range of the shaped round bar steel is narrow, which can be shaped by the same shape of the caliber and only by changing the roll gap. is there. Explaining in detail, comparing the shapes of the material to be rolled after passing the second pass in the sizing rolling by the two-roll method and the four-roll method, the cross-section of the two-roll method becomes a circle that is slightly close to a quadrangle,
With the 4-roll method, the circle is a little closer to an octagon, and since the 2-roll method has a larger diameter deviation, the range of product diameters that can be achieved with the 2-roll method within the allowable diameter deviation is larger than that with the 4-roll method. Also becomes smaller. By the way, the theoretical value of the size range where the difference in eccentricity is 0.5 mm or less is 1.7 in the two-roll method.
mm, 3.8 mm in the 3-roll method, and 7 mm in the 4-roll method.
【０００５】また、４ロール法での製品径のサイズ範囲
が広いといっても、該製品径とカリバの円弧の直径とが
離れるほど偏径差が大きくなり、超精密，即ち偏径差
０．１mm以下の製品を形成しようとすると、４ロール法
でも１．５mm程度のサイズ範囲となり狭いという問題が
あった。本発明は、上記のような問題点に着目してなさ
れたもので、ロール間隙の調整だけでの製品径のサイズ
範囲が広いサイジング圧延方法を目的としている。Even though the size range of the product diameter in the 4-roll method is wide, the deviation in diameter becomes larger as the product diameter and the diameter of the arc of the caliber become more distant. There was a problem that the size range of about 1.5 mm was narrow even in the 4-roll method when trying to form a product of less than 0.1 mm. The present invention has been made in view of the above problems, and an object of the present invention is to provide a sizing rolling method in which the size range of the product diameter is wide only by adjusting the roll gap.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明の丸棒鋼のサイジング圧延方法は、断面がほ
ぼ円形に圧延された素材に対して、圧下方向を相互に４
５度ずらした２台の４ロール圧延機によって直列に圧延
するサイジング圧延方法において、少なくとも２パス目
の４ロール圧延機の各ロールのカリバを、素材の直径よ
りも０．５〜７mm小さい直径の円弧と適当な逃がしを配
した形状にしたことを特徴としている。In order to achieve the above-mentioned object, the sizing rolling method for round bar steel according to the present invention is designed so that a material having a substantially circular cross section is rolled in four rolling directions.
In the sizing rolling method of rolling in series by two 4-roll rolling mills shifted by 5 degrees, at least the second-pass 4-roll rolling mill has a roll caliper of 0.5 to 7 mm smaller than the diameter of the material. It is characterized by the shape of an arc and an appropriate relief.
【０００７】素材の直径を５５〜５８mmとした時に上述
の円弧が適正である。これを素材径が細径または太径と
なる場合も含めて一般化した範囲とすると素材径に対し
て１〜１４％の範囲が適正である。When the diameter of the material is 55 to 58 mm, the above arc is appropriate. If this is a generalized range including the case where the material diameter is thin or large, the range of 1 to 14% is appropriate with respect to the material diameter.
【０００８】[0008]
【作用】サイジング圧延用のパスよりも上流の圧延機列
によってほぼ断面円形になった素材に対して、相互に圧
下方向が４５度ずらした４ロール圧延機によって圧延さ
れることによって、断面がやや８角形に近い真円に整形
される。このとき、ロール間隙を調整することにより製
品径が変更される。The material having a substantially circular cross section due to the row of rolling mills upstream of the sizing rolling pass is rolled by a four-roll rolling mill whose rolling directions are shifted by 45 degrees from each other. It is shaped into a perfect circle close to an octagon. At this time, the product diameter is changed by adjusting the roll gap.
【０００９】従来のように、素材の直径がロールのカリ
バの円弧の直径よりも小さい場合には、製品径が小さく
なるに従って偏径差は大きくなる。また、本発明のよう
に、素材の直径がロールのカリバの円弧の直径よりも大
きい場合には、製品径がカリバの円弧と同一にある点で
偏径差が最も小さくなり、これよりも製品径が太径側，
及び細径側になるに従って偏径差が大きくなる。As in the prior art, when the diameter of the material is smaller than the diameter of the arc of the caliber of the roll, the deviation in diameter increases as the product diameter decreases. Further, as in the present invention, when the diameter of the material is larger than the diameter of the arc of the roll caliber, the difference in eccentricity is the smallest in that the product diameter is the same as the arc of the caliber. Diameter is on the large diameter side,
And, the smaller the diameter is, the larger the deviation in diameter becomes.
【００１０】このように、従来と反対方向にも偏径差の
許容範囲を持つことにより、整形可能なサイズ範囲が大
きくなる。なお、本実施例においてのロールのカリバの
円弧の直径の値の制限は、実験により、素材の直径より
も７mm以上該カリバの円弧の直径を小さくすると噛み出
しのための表面疵が発生して製品の欠陥となるために上
記値に限定している。As described above, the size range that can be shaped is increased by having the allowable range of the diameter difference in the opposite direction to the conventional one. In the present example, the limit of the diameter of the arc of the roll caliber was experimentally determined to be that, when the diameter of the arc of the caliber was made smaller than the diameter of the material by 7 mm or more, a surface flaw for biting occurred. It is limited to the above value because it will cause product defects.
【００１１】[0011]
【実施例】本発明の実施例を図面に基づいて説明する。
まず構成を説明すると、図示しない上流側の圧延機列に
よってほ断面がほぼ円形に整形された素材を、所定の製
品径に整形するために、サイジング圧延用のパスが設置
されている。Embodiments of the present invention will be described with reference to the drawings.
First, the structure will be described. A path for sizing rolling is installed in order to shape a material having a substantially circular cross section by an unillustrated upstream rolling mill row into a predetermined product diameter.
【００１２】そのサイジング圧延用のパスは、図１に示
すように、２つの４ロール圧延機１，２による２パスか
ら構成されている。第１パス用の４ロール圧延機１は、
２組のカリバ１ａ，１ｂの対向方向を夫々上下方向及び
左右方向に配置して、圧下方向を上下及び左右に向けて
いる。第２パス用の４ロール圧延機２は、２組のカリバ
２ａ，２ｂの対向方向を夫々水平方向から４５度ずつ傾
けて配設されている。As shown in FIG. 1, the sizing rolling pass is composed of two passes by two 4-roll rolling mills 1, 2. The 4-roll mill 1 for the first pass
The facing directions of the two pairs of calibers 1a and 1b are arranged in the vertical direction and the horizontal direction, respectively, and the pressing direction is directed to the vertical direction and the horizontal direction. The four-roll rolling mill 2 for the second pass is arranged in such a manner that the facing directions of the two sets of calibers 2a and 2b are each inclined by 45 degrees from the horizontal direction.
【００１３】前記構成のサイジング圧延装置では、素材
３は、第１パスにおいてやや四角形に近い円に整形さ
れ、第２パスにおいて第１パス通過後の最大径部である
第１パスで圧下された面の境界部を圧下されて、やや８
角形に近い真円に整形される。このとき、従来のよう
に、素材３の直径よりもカリバ１ａ，１ｂ，２ａ，２ｂ
の直径が大きい場合には、整形された製品は、製品径が
小さくなるほど偏径差が大きくなって円形に整形され
る。In the sizing rolling apparatus having the above-mentioned structure, the material 3 is shaped into a circle which is slightly close to a quadrangle in the first pass, and is pressed in the first pass which is the maximum diameter portion after passing the first pass in the second pass. 8 is pressed down at the boundary of the surface
It is shaped into a perfect circle that is close to a polygon. At this time, as in the conventional case, the calibers 1a, 1b, 2a, 2b are larger than the diameter of the material 3.
When the diameter of the product is large, the shaped product is shaped into a circle with a larger deviation in diameter as the product diameter becomes smaller.
【００１４】また、本発明のように、素材３の直径より
もカリバ１ａ，１ｂ，２ａ，２ｂの直径が小さい場合に
は、整形された製品は、製品径がカリバの円弧と同一と
なる点で偏径差が最小となる円形に整形される。例え
ば、素材３の直径が５８mmで、許容偏径差０．５mmとし
た時のサイジング可能範囲は図２に示すようになる。When the diameter of the caliber 1a, 1b, 2a, 2b is smaller than the diameter of the material 3 as in the present invention, the shaped product has the same product diameter as the caliber arc. It is shaped into a circle that minimizes the difference in eccentricity. For example, when the diameter of the material 3 is 58 mm and the allowable deviation diameter difference is 0.5 mm, the sizing possible range is as shown in FIG.
【００１５】これは、該素材３の直径と等しい５８mmの
直径の円弧の形状を有する従来のカリバを使用したサイ
ジング圧延と、本発明に基づき素材径よりも７mm小さい
直径である５１mm径の円弧を有するカリバを使用したサ
イジング圧延との、偏径差と可能な製品径との関係を求
めてみたもので、図中点線で示されるものが従来のサイ
ジングを表し、実線で示されるものが本発明に基づくサ
イジングを表している。このグラフから分かるように、
許容偏径差を０．５mmとすると、ロール間隙を調整する
だけで整形可能な製品径のサイズ範囲は、従来のサイジ
ング圧延では約７．７５mmであるが（図３中Ａ）、本発
明に基づくサイジング圧延では約１４mm（図３中Ｂ）と
ほぼ２倍も整形可能な製品径のサイズ範囲が拡大されて
いることが分かる。This is a sizing rolling using a conventional cariva having an arc shape having a diameter of 58 mm which is equal to the diameter of the material 3, and an arc having a diameter of 51 mm which is 7 mm smaller than the material diameter according to the present invention. With respect to sizing rolling using a caliber having, the relationship between the deviation in diameter and the possible product diameter was determined, and what is shown by the dotted line in the figure represents conventional sizing, and what is shown by the solid line is the present invention. Represents sizing based on. As you can see from this graph,
If the allowable deviation diameter difference is 0.5 mm, the size range of the product diameter that can be shaped only by adjusting the roll gap is about 7.75 mm in the conventional sizing rolling (A in FIG. 3), but in the present invention. It can be seen that in the sizing rolling based on the above, the size range of the product diameter that can be shaped is almost doubled to about 14 mm (B in FIG. 3).
【００１６】特に、超精密な精度が要求される、例えば
偏径差０．１mm以下の製品を製造しようとした場合に
も、ロール間隙の調整だけで整形可能なサイズ範囲は、
図２から分かるように、従来では１．２５mm程度である
のに対して、本発明に基づくカリバを使用した場合には
約２．５mmとなりサイズ範囲を２倍に拡大可能となる。
以上のように、製品径に対して小さい方向に偏径差を持
たせるばかりでなく、製品径よりも大きい方向に偏径差
を取ることが可能となり、従来に比べて、ロール間隙の
調整だけで可能な製品径のサイズ範囲が２倍近く拡大可
能となる。In particular, even in the case where a product having a deviation in diameter of 0.1 mm or less is required to be manufactured with ultra-precision, the size range which can be shaped only by adjusting the roll gap is
As can be seen from FIG. 2, it is about 1.25 mm in the prior art, whereas it is about 2.5 mm when the caliber according to the present invention is used, and the size range can be doubled.
As described above, it is possible not only to give the deviation diameter difference in the smaller direction to the product diameter, but also to make the deviation diameter difference in the direction larger than the product diameter. The product size range of possible product diameters can be expanded almost twice.
【００１７】[0017]
【発明の効果】以上説明してきたように、本発明の丸棒
鋼のサイジング圧延方法は、製品径に対して小さい方向
に偏径差を持たせるばかりでなく、製品径よりも大きい
方向に偏径差を取ることが可能となり、従来に比べて、
ロール間隙の調整だけで可能な製品径のサイズ範囲が２
倍近く拡大可能となり、ロール替えに対する大幅な操業
時間の短縮が可能となる。As described above, according to the sizing rolling method for round bar steel of the present invention, not only is there a deviation difference in the smaller direction with respect to the product diameter, but also a deviation diameter in the larger direction than the product diameter. It is possible to take the difference, compared to the conventional
The size range of the product diameter that can be adjusted only by adjusting the roll gap is 2
It can be expanded nearly twice, and it is possible to significantly reduce the operation time for roll change.
【００１８】特に、切削加工や引き抜き加工などの２次
加工工程省略可能な超精密圧延（偏径差０．１mm以下）
の整形可能なサイズ範囲を拡大することができる。In particular, ultra-precision rolling capable of omitting secondary processing steps such as cutting and drawing (deviation of 0.1 mm or less)
The shapeable size range of can be expanded.
【図１】本発明に係わるサイジング圧延用の装置を示す
概要構成図である。FIG. 1 is a schematic configuration diagram showing an apparatus for sizing rolling according to the present invention.
【図２】偏径差と整形可能な製品径との関係を示す図で
ある。FIG. 2 is a diagram showing a relationship between a deviation diameter difference and a shapeable product diameter.
【図３】従来のサイジング圧延用の装置を示す概要構成
図である。FIG. 3 is a schematic configuration diagram showing a conventional apparatus for sizing rolling.
１，２ ４ロール圧延機 １ａ，１ｂ，２ａ，２ｂ カリバ 1, 2 and 4 roll rolling machine 1a, 1b, 2a, 2b Cariba
フロントページの続き (72)発明者 中村 浩亨 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内 (72)発明者 金堂 秀範 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内Continued Front Page (72) Inventor Hirotoshi Nakamura 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Prefecture (no address) Inside Mizushima Steel Works, Kawasaki Steel Co., Ltd. (72) Hidenori Kondo 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama ( No address) Mizusaki Works, Kawasaki Steel Co., Ltd.
Claims (1)
て、圧下方向を相互に４５度ずらした２台の４ロール圧
延機によって直列に圧延するサイジング圧延方法におい
て、少なくとも２パス目の４ロール圧延機の各ロールの
カリバを、素材の直径よりも１〜１４％小さい直径の円
弧と適当な逃がしを配した形状にしたことを特徴とする
丸棒鋼のサイジング圧延方法。1. A sizing rolling method in which a material having a substantially circular cross section is serially rolled by two four-roll rolling mills whose rolling directions are shifted from each other by 45 degrees. A method for sizing and rolling a round bar steel, characterized in that the cariva of each roll of the roll rolling machine is formed into a shape in which an arc having a diameter 1 to 14% smaller than the diameter of the material and an appropriate relief are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3191961A JP2527283B2 (en) | 1991-07-31 | 1991-07-31 | Round steel sizing rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3191961A JP2527283B2 (en) | 1991-07-31 | 1991-07-31 | Round steel sizing rolling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0538501A true JPH0538501A (en) | 1993-02-19 |
| JP2527283B2 JP2527283B2 (en) | 1996-08-21 |
Family
ID=16283329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3191961A Expired - Fee Related JP2527283B2 (en) | 1991-07-31 | 1991-07-31 | Round steel sizing rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2527283B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442989B1 (en) * | 1999-08-19 | 2002-09-03 | Kawasaki Steel Corporation | Wire sizing rolling method |
| JP2013146787A (en) * | 2011-12-22 | 2013-08-01 | Jfe Steel Corp | Rolling equipment and method for rolling wire rod |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7154563B1 (en) * | 1998-04-30 | 2006-12-26 | Stmicroelectronics Asia Pacific Pte Ltd. | Automatic brightness limitation for avoiding video signal clipping |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199206A (en) * | 1986-02-27 | 1987-09-02 | Nippon Steel Corp | Sizing rolling method for bar and wire rod |
| JPS6393403A (en) * | 1986-10-06 | 1988-04-23 | Sumitomo Metal Ind Ltd | Hot production of metallic material having circular section |
| JPH036841A (en) * | 1989-05-25 | 1991-01-14 | Motorola Inc | Bonding device and method |
-
1991
- 1991-07-31 JP JP3191961A patent/JP2527283B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62199206A (en) * | 1986-02-27 | 1987-09-02 | Nippon Steel Corp | Sizing rolling method for bar and wire rod |
| JPS6393403A (en) * | 1986-10-06 | 1988-04-23 | Sumitomo Metal Ind Ltd | Hot production of metallic material having circular section |
| JPH036841A (en) * | 1989-05-25 | 1991-01-14 | Motorola Inc | Bonding device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442989B1 (en) * | 1999-08-19 | 2002-09-03 | Kawasaki Steel Corporation | Wire sizing rolling method |
| JP2013146787A (en) * | 2011-12-22 | 2013-08-01 | Jfe Steel Corp | Rolling equipment and method for rolling wire rod |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2527283B2 (en) | 1996-08-21 |
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