JPH10137804A - Rolling equipment for round bar and wire rod and its rolling method - Google Patents
Rolling equipment for round bar and wire rod and its rolling methodInfo
- Publication number
- JPH10137804A JPH10137804A JP30060896A JP30060896A JPH10137804A JP H10137804 A JPH10137804 A JP H10137804A JP 30060896 A JP30060896 A JP 30060896A JP 30060896 A JP30060896 A JP 30060896A JP H10137804 A JPH10137804 A JP H10137804A
- Authority
- JP
- Japan
- Prior art keywords
- rolling mill
- roll
- rolling
- sizing
- stage
- 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)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、丸鋼、線材の圧延
機列の仕上げ圧延機列およびその圧延方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finishing rolling mill row for rolling mills for round bars and wires and a rolling method therefor.
【0002】[0002]
【従来の技術】一般に棒鋼、線材圧延においては、図3
に示すように仕上がり寸法精度の向上を目的として、仕
上げ圧延機列の最終段にサイジング圧延機を設置するこ
とがあるが、サイジング圧延機に供給する母材は、2ロ
ールまたは3ロール圧延法で圧延して供給しているのが
実状である。また、仕上げ圧延機列の最終段でのサイジ
ング圧延は材料の幅出しの少ない4ロール圧延機をサイ
ジング圧延機として使用する圧延方法が、例えば特開平
6−262201号公報や特開平6−262202号公
報で知られている。2. Description of the Related Art Generally, in the rolling of steel bars and wire rods, FIG.
In order to improve the finished dimensional accuracy, a sizing rolling mill may be installed at the last stage of the finishing rolling mill row, as shown in (1). The base material supplied to the sizing rolling mill is a two-roll or three-roll rolling method. The fact is that it is supplied after being rolled. In the sizing rolling at the final stage of the finishing rolling mill row, a rolling method using a 4-roll rolling mill with a small width of the material as a sizing rolling mill is disclosed in, for example, JP-A-6-262201 and JP-A-6-262202. It is known in the gazette.
【0003】[0003]
【発明が解決しようとする課題】上述したような、従来
一般に使用するサイジング圧延機による棒鋼や線材圧延
においては、仕上げ圧延後の寸法精度を確保するために
サイジング圧延機に供給する棒鋼の断面積および形状に
は制約がある。従って、圧延材の仕上げ寸法の変更に伴
いサイジング圧延機およびサイジング圧延機前段の圧延
機もロールの隙間を調整するか、カリバーを変更する必
要がある。As described above, in the bar and wire rod rolling by a sizing rolling mill generally used in the prior art, the cross-sectional area of the bar supplied to the sizing rolling mill in order to secure the dimensional accuracy after the finish rolling. And there are restrictions on the shape. Therefore, it is necessary to adjust the gap between the rolls or change the caliber of the sizing rolling mill and the rolling mill upstream of the sizing rolling mill in accordance with the change of the finished dimensions of the rolled material.
【0004】また、サイジング圧延機の使用カリバーが
適切であっても、サイジング圧延機前段の母材を圧延す
る圧延機のロールの隙調整量が一定範囲を越えるとサイ
ジング圧延に供給する材料の断面の真円度が悪化するた
めサイジング圧延後の寸法精度を確保することが困難に
なりカリバー変更が必要となる。寸法精度の良好な丸
棒、線材の圧延を能率良く実施するには、サイジング圧
延機の寸法精度の向上に加え、サイジング圧延機に供給
する母材を圧延する圧延機についても寸法精度の向上と
同一カリバーでの広範囲な寸法の圧延が必要である。そ
こで、本発明ではカリバー変更に伴う生産性低下がな
く、しかもサイジング圧延材の寸法精度の向上を可能と
する圧延設備およびその圧延方法を提供することにあ
る。[0004] Even if the caliber used in the sizing rolling mill is appropriate, if the gap adjustment amount of the rolls of the rolling mill for rolling the base material in the preceding stage of the sizing rolling mill exceeds a certain range, the cross section of the material supplied to the sizing rolling is reduced. The roundness is deteriorated, so that it is difficult to secure the dimensional accuracy after sizing rolling, and it is necessary to change the caliber. In order to efficiently perform rolling of round bars and wire rods with good dimensional accuracy, in addition to improving the dimensional accuracy of the sizing rolling mill, it is also necessary to improve the dimensional accuracy of the rolling mill that rolls the base material supplied to the sizing rolling mill. A wide range of rolling dimensions with the same caliber is required. In view of the foregoing, an object of the present invention is to provide a rolling facility and a rolling method thereof that do not cause a decrease in productivity due to a change in caliber and that can improve the dimensional accuracy of a sizing rolled material.
【0005】[0005]
【課題を解決するための手段】上述のような問題を解消
するため、発明者らは鋭意開発を進めた結果、ロール隙
を調整して圧延する際の材料の寸法精度は、材料の圧下
による幅出しとの間に相関のあることを見出した。すな
わち、同一カリバーを使用した幅出しの少ない4ロール
圧延での、より広い寸法範囲の圧延が可能であるという
特徴を活かした同一カリバーでのサイジング圧延機への
母材供給を行うと言うものである。その発明の要旨とす
るところは、 (1)複数段の圧延機で構成される仕上げ圧延機列の最
終段のサイジング圧延機の前段に4ロール圧延機を配設
したことを特徴とする丸鋼、線材の圧延設備。 (2)複数段の圧延機で構成される仕上げ圧延機列の最
終段のサイジング圧延機の前段に4ロール圧延機を用
い、前記4ロール圧延機で圧延された材料をサイジング
圧延機で仕上げ圧延することを特徴とする丸鋼、線材の
圧延方法にある。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have intensively developed and as a result, the dimensional accuracy of the material when rolling by adjusting the roll gap depends on the reduction of the material. It has been found that there is a correlation with the width. In other words, the base material is supplied to a sizing rolling mill with the same caliber utilizing the feature that rolling in a wider dimension range can be performed by 4-roll rolling with a small width using the same caliber. is there. The gist of the invention is as follows: (1) A round roll wherein a four-roll rolling mill is arranged in front of a sizing rolling mill at the last stage of a finishing rolling mill row including a plurality of rolling mills. , Wire rod rolling equipment. (2) A four-roll rolling mill is used before the last sizing rolling mill in the finishing rolling mill train composed of a plurality of rolling mills, and the material rolled by the four-roll rolling mill is finish-rolled by the sizing rolling mill. And a method for rolling round bars and wires.
【0006】[0006]
【発明の実施の形態】以下、本発明について図面に従っ
て詳細に説明する。図1は本発明の実施に係る仕上げ圧
延機列のロール配置図である。図1に示すように、丸
鋼、線材圧延機列の最終段に配設したサイジング圧延機
の前段に4ロール圧延機を配設したもので、4ロール圧
延機から母材供給を受けサイジング圧延を行う圧延機の
形式は、2ロール、3ロール、4ロール圧延機が想定さ
れ、ロール隙調整機構の有無何れでも設置可能である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a roll layout diagram of a finishing mill row according to an embodiment of the present invention. As shown in FIG. 1, a four-roll rolling mill is arranged in front of a sizing rolling mill arranged in the last stage of a row of round bars and wire rod rolling mills. The type of the rolling mill for performing the above-mentioned is assumed to be a two-roll, three-roll, or four-roll rolling mill, and can be installed with or without a roll gap adjusting mechanism.
【0007】次に、本発明の実施形態列について説明す
る。図2は本発明の実施に係る仕上げ圧延機列のパス断
面説明図である。図2に示すように、仕上げ圧延機列に
おいて、前4段は90°位相で配置された2ロール圧延
機で順にオーバル、ラウンドの圧延を繰り返し、5、6
段に4ロール圧延機を45°の位相で配置する。2ロー
ル圧延機より供給された材料は4ロール圧延機の1段目
で角の丸い円に近い正方形に圧延され、4ロール圧延機
の2段目で角を圧下することで真円に近い丸棒に圧延さ
れ、サイジング圧延機に供給される。Next, an embodiment of the present invention will be described. FIG. 2 is an explanatory cross-sectional view of a pass of the finishing mill train according to the embodiment of the present invention. As shown in FIG. 2, in the finishing rolling mill row, the first four stages are repeatedly rolled in oval and round by a two-roll rolling mill arranged in a 90 ° phase in the order of 5, 6
Four roll mills are arranged on the tier at a phase of 45 °. The material supplied from the two-roll mill is rolled into a square near a rounded circle at the first stage of the four-roll mill, and the round is reduced to a perfect circle by reducing the corner at the second stage of the four-roll mill. Rolled into bars and fed to a sizing mill.
【0008】[0008]
【実施例】表1に仕上げ列最終段に3ロール×3段のロ
ール隙非調整型のサイジング圧延機を配し、その前段に
4ロール×2段の圧延機を配置し、φ14〜90mmの
丸棒圧延を実施する際のロール孔形の集約状況を示す。
従来の2ロール圧延機に加えサイジング圧延機を併用す
る圧延方法に比べ、2ロール圧延機のカリバー種類数は
約3分の1に集約可能となる。また、表2に上記設備配
列でφ30mmおよびφ60mmの丸棒を圧延した際の
サイジング圧延後の外径寸法の精度の比較を示す。寸法
精度の向上により、圧延製品の歩留りと商品価値の向上
が可能となる。EXAMPLE In Table 1, a 3 roll × 3 roll sizing / rolling type non-adjustable sizing rolling mill is arranged at the final stage of the finishing row, and a 4 roll × 2 rolling mill is arranged at the preceding stage. The roll hole shape when round bar rolling is performed is shown.
Compared with a conventional rolling method using a sizing rolling mill in addition to a two-roll rolling mill, the number of caliber types of the two-roll rolling mill can be reduced to about one-third. Table 2 shows a comparison of the accuracy of the outer diameter after sizing and rolling when round rods of φ30 mm and φ60 mm are rolled in the above arrangement. By improving the dimensional accuracy, it is possible to improve the yield and commercial value of rolled products.
【0009】[0009]
【表1】 [Table 1]
【0010】[0010]
【表2】 [Table 2]
【0011】[0011]
【発明の効果】以上述べたように、本発明による圧延設
備とその圧延方法によれば、4ロール圧延機のカリバー
変更を行うことなくサイジング圧延機に、従来の2ロー
ル・4ロール圧延法に比べ圧延ライン全体の生産性の向
上とサイジング圧延機の寸法精度の向上をはかることが
出来る工業上極めて優れた効果を奏するものである。As described above, according to the rolling equipment and the rolling method according to the present invention, the sizing rolling mill can be used without changing the caliber of the four-roll rolling mill, and the conventional two-roll / four-roll rolling method can be used. In comparison, the present invention has an extremely excellent industrial effect that can improve the productivity of the entire rolling line and the dimensional accuracy of the sizing rolling mill.
【図1】本発明の実施に係る仕上げ圧延機列のロール配
置図である。FIG. 1 is a roll layout diagram of a finishing rolling mill row according to an embodiment of the present invention.
【図2】本発明の実施に係る仕上げ圧延機列のパス断面
説明図である。FIG. 2 is an explanatory cross-sectional view of a pass of a finishing mill row according to an embodiment of the present invention.
【図3】従来法での仕上げ圧延機列のロール配置図であ
る。FIG. 3 is a roll layout diagram of a finish rolling mill row in a conventional method.
Claims (2)
機列の最終段のサイジング圧延機の前段に4ロール圧延
機を配設したことを特徴とする丸鋼、線材の圧延設備。1. A rolling equipment for round bars and wire rods, wherein a four-roll rolling mill is arranged in front of a sizing rolling mill at the last stage of a finishing rolling mill row composed of a plurality of rolling mills.
機列の最終段のサイジング圧延機の前段に4ロール圧延
機を用い、前記4ロール圧延機で圧延された材料をサイ
ジング圧延機で仕上げ圧延することを特徴とする丸鋼、
線材の圧延方法。2. A four-roll rolling mill is used in front of a sizing rolling mill at a final stage of a finishing rolling mill row composed of a plurality of rolling mills, and a material rolled by the four-roll rolling mill is subjected to a sizing rolling mill. Round steel characterized by finish rolling,
How to roll wire.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30060896A JP3260640B2 (en) | 1996-11-12 | 1996-11-12 | Rolling equipment and method for rolling round bars and wires |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30060896A JP3260640B2 (en) | 1996-11-12 | 1996-11-12 | Rolling equipment and method for rolling round bars and wires |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10137804A true JPH10137804A (en) | 1998-05-26 |
JP3260640B2 JP3260640B2 (en) | 2002-02-25 |
Family
ID=17886906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30060896A Expired - Lifetime JP3260640B2 (en) | 1996-11-12 | 1996-11-12 | Rolling equipment and method for rolling round bars and wires |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3260640B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007190561A (en) * | 2006-01-17 | 2007-08-02 | Sanyo Special Steel Co Ltd | Method for manufacturing plurality of steel bars having different diameters |
CN103191916A (en) * | 2013-03-28 | 2013-07-10 | 攀钢集团成都钢钒有限公司 | Rolling method for round steel |
CN103978030A (en) * | 2014-05-19 | 2014-08-13 | 中冶赛迪工程技术股份有限公司 | Production process device for rebar with ribs at three sides |
CN104117536A (en) * | 2014-06-24 | 2014-10-29 | 武钢集团昆明钢铁股份有限公司 | Finish-pass-sharing production method of plain round hot-rolled steel bars with diameter being 6.5 mm and disc screw hot-rolled steel bars with diameter being 6 mm |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101564733A (en) * | 2009-05-11 | 2009-10-28 | 秦建平 | Equipment for rolling metal rod wire |
CN104043647B (en) * | 2013-11-13 | 2016-01-20 | 山东西王特钢有限公司 | The rolling mill practice that a kind of circle 5.5 shares with screw thread 6.0 |
-
1996
- 1996-11-12 JP JP30060896A patent/JP3260640B2/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007190561A (en) * | 2006-01-17 | 2007-08-02 | Sanyo Special Steel Co Ltd | Method for manufacturing plurality of steel bars having different diameters |
JP4713349B2 (en) * | 2006-01-17 | 2011-06-29 | 山陽特殊製鋼株式会社 | Manufacturing method of multiple bars with different diameters |
CN103191916A (en) * | 2013-03-28 | 2013-07-10 | 攀钢集团成都钢钒有限公司 | Rolling method for round steel |
CN103978030A (en) * | 2014-05-19 | 2014-08-13 | 中冶赛迪工程技术股份有限公司 | Production process device for rebar with ribs at three sides |
CN104117536A (en) * | 2014-06-24 | 2014-10-29 | 武钢集团昆明钢铁股份有限公司 | Finish-pass-sharing production method of plain round hot-rolled steel bars with diameter being 6.5 mm and disc screw hot-rolled steel bars with diameter being 6 mm |
CN104117536B (en) * | 2014-06-24 | 2015-10-28 | 武钢集团昆明钢铁股份有限公司 | A kind of φ 6.5 light circle and φ 6 valve snail hot-rolled reinforced bar finishing groove share production method |
Also Published As
Publication number | Publication date |
---|---|
JP3260640B2 (en) | 2002-02-25 |
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