JPH0994602A - Rolling method for deformed steel bar - Google Patents
Rolling method for deformed steel barInfo
- Publication number
- JPH0994602A JPH0994602A JP7251356A JP25135695A JPH0994602A JP H0994602 A JPH0994602 A JP H0994602A JP 7251356 A JP7251356 A JP 7251356A JP 25135695 A JP25135695 A JP 25135695A JP H0994602 A JPH0994602 A JP H0994602A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- rolling
- steel bar
- rib
- deformed steel
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鉄筋等に使用される異
形棒鋼を得るための圧延方法に関し、特に、長手方向に
延びるリブを４本有する異形棒鋼を２ロール圧延機によ
って安定的に得ることのできる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 rolling method for obtaining a deformed steel bar used for reinforcing bars and the like, and in particular, a deformed steel bar having four longitudinally extending ribs can be stably obtained by a two-roll rolling mill. It is about the possible ways.
【０００２】[0002]
【従来の技術】従来の異形棒鋼としては、図６（（ａ）
は側面図、（ｂ）はそのＸ−Ｘ線断面図）に示すよう
に、丸棒材の周面に、周方向に沿った多数の凸部（節）
１２が長手方向にほぼ等間隔で、長手方向に沿った二本
の凸部（リブ）４が断面円の周方向で１８０°離れた位
置に形成されているものが一般的である。2. Description of the Related Art A conventional deformed steel bar is shown in FIG.
Is a side view, (b) is a cross-sectional view taken along line XX), and as shown in the drawing, a large number of protrusions (nodes) along the circumferential direction are formed on the circumferential surface of the round bar.
In general, 12 are arranged at substantially equal intervals in the longitudinal direction, and two convex portions (ribs) 4 along the longitudinal direction are formed at positions separated by 180 ° in the circumferential direction of the sectional circle.
【０００３】このような異形棒鋼５は、一対二個のロー
ルを対向配置した２ロール圧延機が複数台直列に配列さ
れた熱間連続圧延設備によって製造され、図７（正面
図）および図８（（ａ）は展開図、（ｂ）はそのＹ−Ｙ
線断面図）に示すように、最終仕上用の孔型を形成する
両仕上ロールＲ1 ，Ｒ2 には、断面円弧状の周溝３に、
周方向と直交する節溝２が形成してある。この孔型に、
上流側の圧延機列によって断面が楕円に圧延された素材
Ｓを通すことにより、丸棒材の周面に、節溝２に応じた
節１２と、素材ＳのロールＲ1 ，Ｒ2 間からの噛み出し
により生じるリブ４とが形成される。Such a deformed steel bar 5 is manufactured by a hot continuous rolling facility in which a plurality of two-roll rolling mills in which one pair and two rolls are arranged to face each other are arranged in series, and as shown in FIG. 7 (front view) and FIG. ((A) is a development view, (b) is its Y-Y
As shown in the line sectional view), in both finishing rolls R 1 and R 2 forming the final finishing die, the circumferential groove 3 having an arcuate cross section is provided.
A node groove 2 that is orthogonal to the circumferential direction is formed. In this hole type,
By passing the material S having an elliptical section rolled by the row of rolling mills on the upstream side, the knots 12 corresponding to the knot grooves 2 and the rolls R 1 and R 2 of the material S are passed through the peripheral surface of the round bar. Ribs 4 formed by the biting out of the.
【０００４】また、異形棒鋼の節は長手方向に対して斜
めに配置される場合もあり、その場合には、図９に示す
ように、仕上ロールＲの周面の節溝２が、周方向に対し
て所定角度αだけ傾けて形成されている。図９において
（ａ）は仕上ロールＲの孔型部の展開図であり、（ｂ）
はそのＺ−Ｚ線断面図である。この場合でも、得られる
異形棒鋼のリブは、仕上ロールＲ間からの噛み出しによ
って形成される二本のみである。Further, the nodes of the deformed steel bar may be arranged obliquely with respect to the longitudinal direction. In that case, as shown in FIG. 9, the node grooves 2 on the circumferential surface of the finishing roll R are circumferentially arranged. Is formed by inclining by a predetermined angle α. In FIG. 9, (a) is a development view of the hole portion of the finishing roll R, (b)
Is a sectional view taken along line ZZ. Even in this case, the ribs of the deformed steel bar obtained are only two ribs formed by biting out from between the finishing rolls R.
【０００５】近年、このような異形棒鋼を加工機械で曲
げることが行われているが、リブが二本しかないと、加
工機械の送り装置や支持装置で異形棒鋼の表面を安定的
に支持することが困難であるため、円周方向にほぼ等間
隔に四本のリブを有する異形棒鋼が求められている。ま
た、異形棒鋼は鉄筋コンクリート用の鉄筋として使用さ
れるが、リブが四本あるとコンクリートとの付着力が高
くなるという利点もある。In recent years, it has been practiced to bend such a deformed steel bar by a processing machine. However, if there are only two ribs, the surface of the deformed steel bar is stably supported by the feeding device and the supporting device of the processing machine. Therefore, a deformed steel bar having four ribs at equal intervals in the circumferential direction is required. Further, the deformed steel bar is used as a reinforcing bar for reinforced concrete, but if there are four ribs, there is an advantage that the adhesive force with the concrete becomes high.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、四本の
リブを有する異形棒鋼を製造する技術は確立していな
い。例えば、本出願人等が以前出願した技術（特願平６
−１１９０６７号公報参照）によれば最終仕上圧延機に
４ロール圧延機を用いることにより、四本のリブを有す
る異形棒鋼を製造することは可能であるが、最終仕上圧
延を２ロール圧延機で行うことによって四本のリブを形
成することは実用化されていない。However, a technique for manufacturing a deformed steel bar having four ribs has not been established. For example, the technology previously filed by the applicant (Japanese Patent Application No.
-119067), it is possible to produce a deformed steel bar having four ribs by using a four-roll rolling mill as the final rolling mill, but the final rolling is performed by a two-roll rolling mill. Forming four ribs by doing so has not been put to practical use.
【０００７】本発明は、このような点に着目してなされ
たものであり、最終仕上圧延を２ロール圧延機で行うこ
とによって節と四本のリブが形成された異形棒鋼を得る
ことを課題としている。The present invention has been made in view of such a point, and it is an object of the present invention to obtain a deformed steel bar in which nodes and four ribs are formed by performing final finishing rolling with a two-roll rolling mill. I am trying.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の発明は、一対二個のロールを対向配置し
た２ロール圧延機が複数台直列に配列された熱間連続圧
延設備の最終仕上圧延機で、送給される素材の周面に対
して、ロール周面の周溝と交差するように設けた節溝に
より節を形成し、且つロール間からの噛み出しによりリ
ブを形成する異形棒鋼の圧延方法において、前記周溝お
よび節溝に加えて、前記周溝の溝幅方向中心部に、周方
向に直交する断面が台形状であって、その平行な二辺が
深さ方向に位置し且つ底側の辺が短いリブ用底溝を設け
た一対二個のロールを用いて、最終仕上圧延を行うこと
を特徴とする異形棒鋼の圧延方法を提供する。In order to achieve the above-mentioned object, the invention of claim 1 is a hot continuous rolling facility in which a plurality of two-roll rolling mills in which one to two rolls are arranged facing each other are arranged in series. In the final finishing rolling machine, the knots are formed on the peripheral surface of the material to be fed so as to intersect the peripheral grooves of the roll peripheral surface, and ribs are formed by biting out from between the rolls. In the rolling method of the deformed steel bar to be formed, in addition to the circumferential groove and the nodal groove, a central portion in the groove width direction of the circumferential groove has a trapezoidal cross section orthogonal to the circumferential direction, and two parallel sides are deep. A method for rolling a deformed steel bar, characterized in that final finishing rolling is performed by using a pair of two rolls provided with a bottom groove for a rib located in the depth direction and having a short side on the bottom side.
【０００９】この方法によれば、ロール間からの噛みだ
しによって形成される二本のリブに加えて、各ロールに
形成されたリブ用底溝によって二本のリブが形成され
る。リブ用底溝によるリブは前記周溝の溝幅方向中心部
に設けてあるため、円周方向に等間隔またはほぼ等間隔
に四本のリブが形成された異形棒鋼が得られる。請求項
２の発明は、請求項１の方法において、前記ロールは、
例えば図１に示すように、前記リブ用底溝１の底面を節
溝２の底面と一致させ、且つ節溝２を前記周溝３（溝幅
方向中心線Ｌ0 ）に対して直角に形成したものであると
ともに、、図２に示すように、前記噛み出しによるリブ
４ａ，４ｂ間の幅Ｈ1 が節溝２の断面円の直径Ａ1 に一
致するまたはほぼ一致するように圧延を行うことを特徴
とするものである。According to this method, in addition to the two ribs formed by biting out from between the rolls, the two ribs are formed by the rib bottom groove formed in each roll. Since the rib formed by the rib bottom groove is provided at the center of the circumferential groove in the groove width direction, a deformed steel bar in which four ribs are formed at equal or substantially equal intervals in the circumferential direction can be obtained. The invention of claim 2 is the method of claim 1, wherein the roll is
For example, as shown in FIG. 1, the bottom surface of the rib bottom groove 1 is aligned with the bottom surface of the node groove 2, and the node groove 2 is formed at a right angle to the circumferential groove 3 (groove width direction center line L 0 ). In addition, as shown in FIG. 2, rolling is performed so that the width H 1 between the ribs 4a and 4b by the biting matches or substantially matches the diameter A 1 of the sectional circle of the node groove 2. It is characterized by that.
【００１０】この方法によれば、四本のリブ４ａ〜４ｄ
が円周方向に等間隔またはほぼ等間隔に形成されること
に加えて、全てのリブの外周面が節の外周面と一致また
はほぼ一致するとともに、節がリブに対して直角に形成
される。請求項３の発明は、請求項２の方法において、
図２に示すように、リブ用底溝１の深さが製品の平均径
の１０％以下である場合に、前記リブ用底溝１の断面を
なす台形が等脚台形であってその平行でない二辺のなす
角度θが１０°以上であり、且つ当該リブ用底溝１の底
側の溝幅ｂが前記平均径の４％以上であることを特徴と
するものである。According to this method, four ribs 4a-4d are provided.
In addition to being formed at equal intervals or substantially equal intervals in the circumferential direction, the outer peripheral surfaces of all the ribs match or substantially match the outer peripheral surfaces of the nodes, and the nodes are formed at right angles to the ribs. . According to the invention of claim 3, in the method of claim 2,
As shown in FIG. 2, when the depth of the rib bottom groove 1 is 10% or less of the average diameter of the product, the trapezoid forming the cross section of the rib bottom groove 1 is an isosceles trapezoid and is not parallel to it. The angle θ formed by the two sides is 10 ° or more, and the groove width b on the bottom side of the rib bottom groove 1 is 4% or more of the average diameter.
【００１１】前記製品の平均径とは、異形棒鋼の節およ
びリブを除いた丸棒部分の平均直径を意味する。ここ
で、図２に示すように、素材Ｓの進行速度はロール
Ｒ1 ，Ｒ2 の周面における回転速度に一致するが、周溝
３のリブ用底溝１の開口側の角部ａは回転半径が小さい
ために、この角部ａでの回転速度は素材Ｓの進行速度よ
り遅くなる。そのため、この角部ａは圧延時に無理な力
がかかって割れやすいが、リブ用底溝１の形状を前述の
ように限定することにより、割れ難くすることができ
る。The average diameter of the product means the average diameter of the round bar portion excluding the nodes and ribs of the deformed steel bar. Here, as shown in FIG. 2, the advancing speed of the material S matches the rotational speed of the rolls R 1 and R 2 on the peripheral surface, but the corner a on the opening side of the rib bottom groove 1 of the peripheral groove 3 is Since the radius of gyration is small, the rotational speed at the corner a is slower than the traveling speed of the material S. Therefore, this corner portion a is easily cracked due to unreasonable force applied during rolling, but it can be made difficult to crack by limiting the shape of the rib bottom groove 1 as described above.
【００１２】実際に前記角度θと溝幅ｂとを変化させて
ロールの角部ａに割れが生じるかどうかを調べたとこ
ろ、リブ用底溝１の深さをＪＩＳ規格の上限である製品
平均径の１０％とした場合には、図３のグラフに示すよ
うな結果になった。このグラフから、リブ用底溝１の深
さが製品平均径の１０％である場合には、角度θが１０
°以上であり、且つ溝幅ｂが製品平均径の４％以上であ
ればロール割損が生じないことが分かる。また、リブ用
底溝１の深さは浅い方がロールに割れが生じ難いため、
リブ用底溝１の深さが製品平均径の１０％未満である場
合にも、角度θが１０°以上であり、溝幅ｂが製品平均
径の４％以上であればロール割損が生じないことにな
る。When the angle θ and the groove width b were actually changed to examine whether or not the corner a of the roll was cracked, the depth of the rib bottom groove 1 was determined as a product average which is the upper limit of the JIS standard. When the diameter is 10%, the result shown in the graph of FIG. 3 is obtained. From this graph, when the depth of the rib bottom groove 1 is 10% of the average product diameter, the angle θ is 10
It can be seen that if the groove width b is 4% or more of the average diameter of the product, the roll breakage does not occur. Further, the shallower the depth of the bottom groove 1 for the rib is, the more difficult it is for the roll to crack.
Even when the depth of the rib bottom groove 1 is less than 10% of the product average diameter, if the angle θ is 10 ° or more and the groove width b is 4% or more of the product average diameter, roll fracture occurs. There will be no.
【００１３】なお、リブ用底溝１の溝幅ｂは広い方が、
角度θは大きい方がロールはより割れ難くなるが、これ
らの上限値はＪＩＳ等で定められた製品規格によって設
定される。The wider the groove width b of the rib bottom groove 1 is,
The larger the angle θ is, the more difficult the roll is to break, but the upper limits of these are set by the product standard defined by JIS or the like.
【００１４】[0014]
【発明の実施の形態】以下、本発明の一実施形態を図面
に基づき説明する。図４は、この実施形態において、最
終仕上用２ロール圧延機の一対のロールで形成される孔
型を示す正面図であり、前出の図１は、この実施形態に
おけるロールの溝面側を示す展開図（ａ）とそのＤ−Ｄ
線断面図（ｂ）である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a front view showing a hole type formed by a pair of rolls of a two-roll rolling machine for final finishing in this embodiment, and FIG. 1 described above shows the groove surface side of the roll in this embodiment. The developed view (a) and its DD
It is a line sectional view (b).
【００１５】これらの図に示すように、同形状のロール
Ｒ1 ，Ｒ2 は、周面に断面円弧状の周溝３が形成され、
この周溝３には、周方向に垂直に所定の幅で節溝２が刻
んである。この節溝２は、周溝３の周方向に沿って等間
隔で形成されている。また、周溝３の溝幅方向中心線Ｌ
0 に沿って、周方向（溝幅方向中心線Ｌ0 ）に直交する
断面が等脚台形であるリブ用底溝１が、周方向全体に渡
って形成されている。この台形の平行な二辺はリブ用底
溝１の深さ方向に位置し、底側の辺が短くなっている。As shown in these figures, the rolls R 1 and R 2 having the same shape are formed with a circumferential groove 3 having an arcuate cross section on the circumferential surface.
The peripheral groove 3 is provided with the node groove 2 having a predetermined width perpendicular to the circumferential direction. The node grooves 2 are formed at equal intervals along the circumferential direction of the circumferential groove 3. In addition, the center line L of the circumferential groove 3 in the groove width direction
Along the 0 , a bottom groove 1 for a rib having a trapezoidal cross section orthogonal to the circumferential direction (groove width direction center line L 0 ) is formed over the entire circumferential direction. Two parallel sides of this trapezoid are located in the depth direction of the rib bottom groove 1, and the bottom side is short.
【００１６】このリブ用底溝１の底面は節溝２の底面と
一致しており、図４に示すように、深さｃ＝０．８５ｍ
ｍ、孔型の直径（製品の平均径）Ａ2 ＝１５．９ｍｍ、
断面をなす等脚台形の平行でない二辺のなす角度θ＝６
０°、底側の溝幅ｂ＝２．０ｍｍである。また、ロール
Ｒ1 ，Ｒ2 周面の周溝３との境界部分には傾斜部３ａが
形成され、ロール隙間ｄ＝２．０として、両ロール
Ｒ1 ，Ｒ2 の傾斜部３ａ同士がなす角度β＝６０°とし
た。ここで、リブ用底溝１の深さｃは製品の平均径Ａ2
の５．３％に、リブ用底溝１の底側の溝幅ｂは製品の平
均径Ａ2 の１３％にそれぞれ相当する。The bottom surface of the rib bottom groove 1 coincides with the bottom surface of the node groove 2, and as shown in FIG. 4, the depth c = 0.85 m.
m, hole diameter (average diameter of the product) A 2 = 15.9 mm,
Angle θ = 6 between two non-parallel sides of an isosceles trapezoid forming a cross section
The groove width b at the bottom side is 0 ° and b = 2.0 mm. Further, an inclined portion 3a is formed at the boundary between the circumferential surfaces of the rolls R 1 and R 2 and the circumferential groove 3, and the roll gap d = 2.0 is set between the inclined portions 3a of the rolls R 1 and R 2. The angle β was set to 60 °. Here, the depth c of the rib bottom groove 1 is the average diameter A 2 of the product.
The groove width b on the bottom side of the rib bottom groove 1 corresponds to 13% of the average diameter A 2 of the product.
【００１７】このような２ロール圧延機を最終仕上圧延
機とし、通常の２ロール圧延機列で所定の外径寸法とな
るまで圧延された丸棒材を、前出の図２に示すように、
噛み出しによるリブ４ａ，４ｂの幅Ｈ1 が節溝２の断面
円の直径Ａ1 に一致するように仕上圧延を行ったとこ
ろ、ロール割損のトラブルもなく、四本のリブが円周方
向にほぼ等間隔に形成され、全てのリブの外周面が節の
外周面に一致し、節がリブに対して直角に形成された異
形棒鋼が得られた。Such a two-roll rolling mill is used as a final finishing rolling mill, and a round bar material rolled by a normal two-roll rolling mill train until a predetermined outer diameter is obtained, as shown in FIG. ,
When finish rolling was performed so that the width H 1 of the ribs 4a and 4b due to biting coincided with the diameter A 1 of the sectional circle of the nodal groove 2, there was no trouble of roll breakage, and the four ribs were arranged in the circumferential direction. A deformed steel bar was obtained in which the ribs were formed at approximately equal intervals, the outer peripheral surfaces of all the ribs coincided with the outer peripheral surfaces of the joints, and the joints were formed at right angles to the ribs.
【００１８】得られた異形棒鋼は、図５に示すように、
加工機械の送り装置であるフィードローラ６に確実に支
持されて、正確に送られる。すなわち、この異形棒鋼５
は、四本のリブ４が円周方向にほぼ等間隔に形成されて
いるため、異形棒鋼５が（ａ）〜（ｃ）のように回転し
ても、フィードローラ６の各溝面６ａに少なくとも一本
のリブ４が常に当たるようになる。The deformed steel bar thus obtained is, as shown in FIG.
It is reliably supported by the feed roller 6, which is the feeding device of the processing machine, and is fed accurately. That is, this deformed steel bar 5
Since the four ribs 4 are formed at substantially equal intervals in the circumferential direction, even if the deformed steel bar 5 is rotated as shown in (a) to (c), each groove surface 6a of the feed roller 6 is At least one rib 4 will always come into contact.
【００１９】また、節がリブに対して直角であるため、
曲げ加工時にねじれが生じないという利点もある。ま
た、前記実施形態では、リブ用底溝１の深さｃは製品の
平均径Ａ2 の５．３％に、リブ用底溝１の底側の溝幅ｂ
は製品の平均径Ａ2 の１３％としたことにより、ロール
割損のトラブルの発生がなく安定的に四本リブを有する
異形棒鋼が得られた。Further, since the node is perpendicular to the rib,
There is also an advantage that no twist occurs during bending. Further, in the above-described embodiment, the depth c of the rib bottom groove 1 is 5.3% of the average diameter A 2 of the product, and the bottom side groove width b of the rib bottom groove 1 is b.
By setting the average diameter of the product to be 13% of the average diameter A 2 , a deformed bar steel having four ribs was stably obtained without the trouble of roll breakage.
【００２０】[0020]
【発明の効果】以上説明してきたように、本発明によれ
ば、節と四本のリブが形成された異形棒鋼が、最終仕上
圧延を２ロール圧延機で行うことによって得られる。こ
れにより、従来のリブが二本の異形棒鋼の圧延設備にお
いて、最終仕上用２ロール圧延機のロールの孔型形状を
変えるだけでリブが四本の異形棒鋼を得ることができる
ため、製造コストが大幅に高くならない。As described above, according to the present invention, the deformed steel bar having the nodes and the four ribs is obtained by performing the final finish rolling with the two-roll rolling mill. As a result, in a conventional rolling mill for deformed steel bars with two ribs, a deformed steel bar with four ribs can be obtained simply by changing the hole shape of the roll of the final finishing two-roll rolling mill. Does not increase significantly.
【００２１】特に、請求項２の方法によれば、機械加工
に適した形状の異形棒鋼が得られる効果がある。また、
請求項３の方法によれば、ロール割損が生じ難いため、
節と四本のリブが形成された異形棒鋼が安定的に得られ
るという効果がある。Particularly, according to the method of claim 2, there is an effect that a deformed steel bar having a shape suitable for machining can be obtained. Also,
According to the method of claim 3, since roll breakage is unlikely to occur,
It has an effect that a deformed steel bar having a node and four ribs can be stably obtained.
【図１】本発明の一実施形態における最終仕上用２ロー
ル圧延機のロールの溝面側を示す図であり、（ａ）は展
開図、（ｂ）はそのＤ−Ｄ線断面図に相当する。FIG. 1 is a diagram showing a groove surface side of a roll of a two-roll rolling machine for final finishing in one embodiment of the present invention, (a) is a developed view, and (b) is a sectional view taken along line D-D thereof. To do.
【図２】本発明の作用を説明するための、最終仕上用２
ロール圧延機のロールで形成される孔型を示す正面図で
ある。FIG. 2 is a final finishing sheet 2 for explaining the operation of the present invention.
It is a front view which shows the hole type formed with the roll of a roll rolling mill.
【図３】本発明の作用を説明するためのグラフである。FIG. 3 is a graph for explaining the operation of the present invention.
【図４】本発明の一実施形態における最終仕上用２ロー
ル圧延機のロールで形成される孔型を示す正面図であ
る。FIG. 4 is a front view showing a hole die formed by rolls of a two-roll rolling machine for final finishing in one embodiment of the present invention.
【図５】本発明の一実施形態で得られた異形棒鋼のフィ
ードローラ内での状態を示す図であり、（ａ）〜（ｃ）
はそれぞれ異なる状態を示す。FIG. 5 is a view showing a state in the feed roller of the deformed steel bar obtained in one embodiment of the present invention, (a) to (c).
Indicate different states.
【図６】従来の異形棒鋼の一例を示す図であり、（ａ）
は側面図、（ｂ）はそのＸ−Ｘ線断面図に相当する。FIG. 6 is a diagram showing an example of a conventional deformed steel bar, (a)
Is a side view and (b) is a cross-sectional view taken along line XX.
【図７】図６の異形棒鋼を得るための最終仕上用２ロー
ル圧延機のロール対の一例を示す概要図である。FIG. 7 is a schematic diagram showing an example of a pair of rolls of a two-roll rolling machine for final finishing for obtaining the deformed steel bar of FIG. 6.
【図８】図７のロールを示す展開図（ａ）と、そのＹ−
Ｙ線断面図（ｂ）である。8 is a development view (a) showing the roll of FIG. 7 and its Y-.
It is a Y line sectional view (b).
【図９】従来の異形棒鋼圧延に使用される最終仕上孔型
の別の例を示す図であり、（ａ）は展開図、（ｂ）は
（ａ）のＺ−Ｚ線断面図に相当する。9A and 9B are views showing another example of the final finishing hole type used in the conventional deformed bar rolling, where FIG. 9A is a development view and FIG. 9B is a sectional view taken along line ZZ of FIG. 9A. To do.
１ リブ用底溝 ２ 節溝 ３ 周溝 ４ リブ ４ａ〜４ｄリブ ５ 異形棒鋼 １２ 節 Ｒ，Ｒ1 ，Ｒ2ロール Ｓ 素材1 Bottom groove for rib 2 Node groove 3 Circumferential groove 4 Rib 4a-4d rib 5 Deformed bar steel 12 Node R, R 1 , R 2 Roll S Material
Claims (3)
ル圧延機が複数台直列に配列された熱間連続圧延設備の
最終仕上圧延機で、送給される素材の周面に対して、ロ
ール周面の周溝と交差するように設けた節溝により節を
形成し、且つロール間からの噛み出しによりリブを形成
する異形棒鋼の圧延方法において、 前記周溝および節溝に加えて、前記周溝の溝幅方向中心
部に、周方向に直交する断面が台形状であって、その平
行な二辺が深さ方向に位置し且つ底側の辺が短いリブ用
底溝を設けた一対二個のロールを用いて、最終仕上圧延
を行うことを特徴とする異形棒鋼の圧延方法。1. A final finishing mill of a hot continuous rolling facility in which a plurality of two-roll rolling mills each having one-to-two rolls arranged to face each other are arranged in series. In the rolling method of the deformed steel bar, wherein a node is formed by a nodal groove provided so as to intersect with the circumferential groove of the roll circumferential surface, and a rib is formed by biting out from between the rolls, in addition to the circumferential groove and the nodal groove, A rib bottom groove having a trapezoidal cross section orthogonal to the circumferential direction, two parallel sides positioned in the depth direction, and a short side on the bottom side is provided at the center of the groove in the groove width direction. A method for rolling a deformed steel bar, comprising performing final finishing rolling using one to two rolls.
節溝の底面と一致させ、且つ節溝を前記周溝に対して直
角に形成したものであるとともに、前記噛み出しによる
リブ間の幅が節溝の断面円の直径に一致するまたはほぼ
一致するように圧延を行うことを特徴とする請求項１記
載の異形棒鋼の圧延方法。2. The roll is such that the bottom surface of the rib bottom groove coincides with the bottom surface of the node groove, and the node groove is formed at a right angle to the circumferential groove, and the rib gap between the ribs is increased. 2. The method for rolling a deformed steel bar according to claim 1, wherein the rolling is performed so that the width of the bar corresponds to the diameter of the sectional circle of the nodal groove or substantially the same.
１０％以下である場合に、前記リブ用底溝の断面をなす
台形が等脚台形であってその平行でない二辺のなす角度
が１０°以上であり、且つ当該リブ用底溝の底側の溝幅
が前記平均径の４％以上であることを特徴とする請求項
２記載の異形棒鋼の圧延方法。3. When the depth of the rib bottom groove is 10% or less of the average diameter of the product, the trapezoid forming the cross section of the rib bottom groove is an isosceles trapezoid whose two sides are not parallel. The method for rolling a deformed steel bar according to claim 2, wherein the angle formed is 10 ° or more, and the groove width on the bottom side of the rib bottom groove is 4% or more of the average diameter.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7251356A JP2957450B2 (en) | 1995-09-28 | 1995-09-28 | Rolling method for deformed steel bars |
| EP96931999A EP0853988A4 (en) | 1995-09-28 | 1996-09-26 | Method of rolling deformed bar and roll for deformed bar |
| AU70958/96A AU710014B2 (en) | 1995-09-28 | 1996-09-26 | Method of rolling deformed bar and roll for deformed bar |
| PCT/JP1996/002783 WO1997011796A1 (en) | 1995-09-28 | 1996-09-26 | Method of rolling deformed bar and roll for deformed bar |
| BR9610698A BR9610698A (en) | 1995-09-28 | 1996-09-26 | Rolling method of a rebar for reinforcing concrete and cylinder for rebar for reinforcing concrete |
| CN96197278A CN1198111A (en) | 1995-09-28 | 1996-09-26 | Method of rolling deformed bar and roll for deformed bar |
| KR1019980702191A KR19990063724A (en) | 1995-09-28 | 1996-09-26 | Rolling method of deformed bar and roll for deformed bar |
| TW085112024A TW305778B (en) | 1995-09-28 | 1996-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7251356A JP2957450B2 (en) | 1995-09-28 | 1995-09-28 | Rolling method for deformed steel bars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0994602A true JPH0994602A (en) | 1997-04-08 |
| JP2957450B2 JP2957450B2 (en) | 1999-10-04 |
Family
ID=17221617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7251356A Expired - Lifetime JP2957450B2 (en) | 1995-09-28 | 1995-09-28 | Rolling method for deformed steel bars |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0853988A4 (en) |
| JP (1) | JP2957450B2 (en) |
| KR (1) | KR19990063724A (en) |
| CN (1) | CN1198111A (en) |
| AU (1) | AU710014B2 (en) |
| BR (1) | BR9610698A (en) |
| TW (1) | TW305778B (en) |
| WO (1) | WO1997011796A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012223802A (en) * | 2011-04-21 | 2012-11-15 | Otani Steel Corporation Inc | Deformed steel bar and rolling method for the same |
| CN105436233A (en) * | 2015-12-16 | 2016-03-30 | 重庆麦拓科技有限公司 | Processing technology of cold-rolled steel bar |
| US20160213447A1 (en) * | 2013-09-10 | 2016-07-28 | Augma Biomaterials Ltd. | Dual component applicator |
| JP2016182627A (en) * | 2015-03-26 | 2016-10-20 | Ｊｆｅスチール株式会社 | Rolling method for deformed bar |
| CN106269853A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of high ductility cold-rolled ribbed bars processing method |
| JP2021079406A (en) * | 2019-11-20 | 2021-05-27 | Ｊｆｅ条鋼株式会社 | Manufacturing method and manufacturing device of deformed reinforcement with reduced variation in deflective diametrical difference |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363120C (en) * | 2004-11-22 | 2008-01-23 | 董重光 | Reinforced car rubbing roller |
| CN2817999Y (en) * | 2005-07-18 | 2006-09-20 | 罗树森 | Special apparatus for rolling axe or hammerhead structural section continuously |
| KR100838624B1 (en) * | 2007-01-26 | 2008-06-16 | 신수정 | Hot rolling method |
| KR200470061Y1 (en) * | 2012-04-05 | 2013-11-25 | 동국제강주식회사 | Oval shape guide roller and rolling mill having the same |
| CN109396180B (en) * | 2018-10-29 | 2020-09-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of SD420W bamboo joint reinforcing steel bar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043700Y2 (en) * | 1986-03-04 | 1992-02-05 |
-
1995
- 1995-09-28 JP JP7251356A patent/JP2957450B2/en not_active Expired - Lifetime
-
1996
- 1996-09-26 KR KR1019980702191A patent/KR19990063724A/en not_active Application Discontinuation
- 1996-09-26 WO PCT/JP1996/002783 patent/WO1997011796A1/en not_active Application Discontinuation
- 1996-09-26 EP EP96931999A patent/EP0853988A4/en not_active Withdrawn
- 1996-09-26 BR BR9610698A patent/BR9610698A/en not_active Application Discontinuation
- 1996-09-26 AU AU70958/96A patent/AU710014B2/en not_active Ceased
- 1996-09-26 CN CN96197278A patent/CN1198111A/en active Pending
- 1996-10-02 TW TW085112024A patent/TW305778B/zh active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012223802A (en) * | 2011-04-21 | 2012-11-15 | Otani Steel Corporation Inc | Deformed steel bar and rolling method for the same |
| US20160213447A1 (en) * | 2013-09-10 | 2016-07-28 | Augma Biomaterials Ltd. | Dual component applicator |
| US10543467B2 (en) * | 2013-09-10 | 2020-01-28 | Augma Biomaterials Ltd. | Dual component applicator |
| JP2016182627A (en) * | 2015-03-26 | 2016-10-20 | Ｊｆｅスチール株式会社 | Rolling method for deformed bar |
| CN105436233A (en) * | 2015-12-16 | 2016-03-30 | 重庆麦拓科技有限公司 | Processing technology of cold-rolled steel bar |
| CN106269853A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of high ductility cold-rolled ribbed bars processing method |
| JP2021079406A (en) * | 2019-11-20 | 2021-05-27 | Ｊｆｅ条鋼株式会社 | Manufacturing method and manufacturing device of deformed reinforcement with reduced variation in deflective diametrical difference |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2957450B2 (en) | 1999-10-04 |
| AU7095896A (en) | 1997-04-17 |
| BR9610698A (en) | 1999-07-06 |
| KR19990063724A (en) | 1999-07-26 |
| WO1997011796A1 (en) | 1997-04-03 |
| EP0853988A4 (en) | 2001-06-06 |
| AU710014B2 (en) | 1999-09-09 |
| TW305778B (en) | 1997-05-21 |
| CN1198111A (en) | 1998-11-04 |
| EP0853988A1 (en) | 1998-07-22 |
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