JP2001079603A - Manufacture of cold finished steel bar - Google Patents
Manufacture of cold finished steel barInfo
- Publication number
- JP2001079603A JP2001079603A JP25667499A JP25667499A JP2001079603A JP 2001079603 A JP2001079603 A JP 2001079603A JP 25667499 A JP25667499 A JP 25667499A JP 25667499 A JP25667499 A JP 25667499A JP 2001079603 A JP2001079603 A JP 2001079603A
- Authority
- JP
- Japan
- Prior art keywords
- steel bar
- rolling
- machine
- polished steel
- roll
- 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.)
- Pending
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- Metal Rolling (AREA)
- Wire Processing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明はプリンタのシャフ
ト等として好適な磨き棒鋼の製造方法に関し、詳しくは
素材を加熱炉で加熱した上で圧延加工してコイル材と成
し、続いてコンバインドマシン（ＣＭ）による加工を行
って磨き棒鋼を得る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a polished steel bar suitable for a shaft of a printer or the like. More specifically, the present invention relates to a method of heating a material in a heating furnace and rolling the material to form a coil material. CM) to obtain a polished steel bar.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来よ
り、線材圧延にて得られたコイル材を予備矯正機，伸線
ダイス，切断機，研磨機，ロール矯正機を有するコンバ
インドマシン（ＣＭ）を用いて連続的に予備矯正，伸
線，切断，研磨，ロール矯正するといったことが行われ
ている。2. Description of the Related Art Conventionally, a combined machine (CM) having a preliminary straightening machine, a drawing die, a cutting machine, a grinding machine, and a roll straightening machine for coiled material obtained by wire rolling. The pre-straightening, wire drawing, cutting, polishing, and roll straightening are continuously performed by using the method.
【０００３】このＣＭ加工にて得られる磨き棒鋼の有用
な用途の１つとしてプリンタのシャフトがある。このプ
リンタのシャフトは従来表面をゴム被覆したゴム巻きの
ものが多く用いられて来たが、近年表面にセラミックコ
ーティングを施したものも、その使用が増して来つつあ
る。後者のセラミックコーティングした形態のものは、
ゴム巻きのものに比べて経時変化による品質劣化が少な
く、高画質，高処理速度が可能である特長を有する。[0003] One useful application of the polished bar obtained by this CM processing is a shaft of a printer. Conventionally, the shaft of this printer has been often used in the form of a rubber roll whose surface is covered with rubber. In recent years, the use of a shaft whose surface is coated with a ceramic coating is increasing. The latter, in the form of a ceramic coating,
It is characterized by less deterioration in quality due to aging as compared with rubber-wound products, and high quality and high processing speed.
【０００４】ところで、近年においてはカラープリンタ
が急速に普及しているがこのカラープリンタの場合、三
原色を色ごとに３回印刷することとなる関係から、シャ
フトによる紙の送りの精度が悪いと高画質，高鮮明な印
刷を実現できなくなってしまう。そのためこのようなカ
ラープリンタ用のシャフトには、特に上記のようなセラ
ミックコーティングした形態のシャフトには、特に高い
真直度，真円度及びそれらの値のばらつきの少ないこと
が厳しく要求される。[0004] In recent years, color printers have rapidly become widespread. However, in the case of this color printer, the three primary colors are printed three times for each color. It is impossible to realize high quality and high quality printing. Therefore, it is strictly required that such a shaft for a color printer, especially the shaft coated with ceramics as described above, has particularly high straightness, roundness, and a small variation in these values.
【０００５】そのため、ＣＭ加工に際しては図８に示す
ようにして磨き棒鋼２００の振れ量（振れ値）を測定
し、その振れ値が所定の規格値内に収まるように装置各
部の調整を細かく行っている。ここで振れ値の測定は、
磨き棒鋼２００を所定距離離れた２箇所の支持部２０２
にて支持し、その状態で磨き棒鋼２００を回転させて軸
方向中間部の振れの量をダイヤルゲージ２０４にて測定
するようにしている。[0005] Therefore, during CM processing, the run-out amount (run-out value) of the polished steel bar 200 is measured as shown in FIG. 8, and each part of the apparatus is finely adjusted so that the run-out value falls within a predetermined standard value. ing. Here, the measurement of the run-out value
Two supporting portions 202 separated from the polished steel bar 200 by a predetermined distance
In this state, the polished steel bar 200 is rotated, and the amount of runout in the axially intermediate portion is measured by the dial gauge 204.
【０００６】しかしながら、最終的に得られる磨き棒鋼
２００の振れ値はＣＭ加工にだけ依存するのではなく、
ＣＭ加工工程に供給されるコイル材自体の特性にも影響
される。従って振れ値を小さくするには、ＣＭ加工工程
における装置各部の調整を正しく行うのと併せて、ＣＭ
加工工程に供給されるコイル材自体の特性を適性に制御
しておく必要がある。[0006] However, the run-out value of the finally obtained polished steel bar 200 does not depend only on CM processing,
It is also affected by the characteristics of the coil material itself supplied to the CM processing step. Therefore, in order to reduce the run-out value, in addition to properly adjusting each unit of the apparatus in the CM processing step, the CM
It is necessary to appropriately control the characteristics of the coil material itself supplied to the processing step.
【０００７】[0007]
【課題を解決するための手段】本願の発明はこのような
課題を解決するためになされたものである。而して請求
項１の磨き棒鋼の製造方法は、素材を加熱炉で加熱した
上で圧延加工してコイル材と成し、次いで該コイル材を
伸線ダイス，切断機，研磨機，ロール矯正機を有するコ
ンバインドマシンを用いて加工し磨き棒鋼を製造する方
法において、前記圧延加工における仕上最終圧延を、再
結晶率が１〜２０％となる条件で行うことを特徴とす
る。The invention of the present application has been made to solve such a problem. According to a first aspect of the present invention, there is provided a method for manufacturing a polished steel bar, wherein the material is heated in a heating furnace and then rolled to form a coil material, and then the coil material is drawn with a wire drawing die, a cutting machine, a grinding machine, and a roll straightener. In the method of producing a polished steel bar by using a combined machine having a mill, the final rolling in the rolling process is performed under the condition that the recrystallization ratio is 1 to 20%.
【０００８】請求項２の磨き棒鋼の製造方法は、請求項
１に記載の製造方法において、前記素材の前記加熱炉内
での加熱を、その後圧延加工される該素材の先端部の温
度に対して後端部の温度が高く且つ該先端部から後端部
にかけて所定の温度勾配を有するように行うことを特徴
とする。According to a second aspect of the present invention, there is provided a method of manufacturing a polished steel bar according to the first aspect, wherein the heating of the material in the heating furnace is performed with respect to a temperature of a tip portion of the material which is subsequently rolled. The temperature of the rear end is high and a predetermined temperature gradient is provided from the front end to the rear end.
【０００９】請求項３の磨き棒鋼の製造方法は、請求項
１，２の何れかに記載の製造方法において、前記ロール
矯正機による矯正を、前記コイル材の状態で有する捩れ
を戻す向きに行うことを特徴とする。According to a third aspect of the present invention, in the method for producing a polished steel bar according to any one of the first and second aspects, the straightening by the roll straightening machine is performed in a direction of returning the twist in the state of the coil material. It is characterized by the following.
【００１０】[0010]
【作用及び発明の効果】本発明者は、ＣＭ加工にて得ら
れる磨き棒鋼の曲り等に起因する振れ値を大きくする原
因の１つが、ＣＭ加工工程に供給されるコイル材自体の
有する内部歪にあるものと考え、そこで仕上最終圧延時
の温度と圧下率とを種々異ならせて振れ値を測定したと
ころ、圧延加工後に材料が１〜２０％の再結晶率で再結
晶を起すような条件で仕上最終圧延を行うことによって
良好な結果の得られることを確認した。The present inventor has found that one of the causes of an increase in the runout value caused by bending of a polished bar obtained by CM processing is internal distortion of the coil material itself supplied to the CM processing step. Therefore, when the run-out value was measured while varying the temperature and rolling reduction at the time of final rolling in the finish, the conditions under which the material recrystallized at a recrystallization rate of 1 to 20% after rolling were obtained. It was confirmed that good results could be obtained by performing the final finishing rolling.
【００１１】図１（Ａ）は圧延加工前後における材料の
内部組織の変化を模式的に表したものである。同図に示
しているように線材に圧延加工を施すと、材料内部に加
わる歪によって組織の転位密度が高くなる。圧延加工後
の材料内部の組織はその後再結晶によって転位を吸収、
即ち歪を吸収するか又は再結晶を起すことなく歪を低下
する方向に向う（回復する）が、本発明者の研究によれ
ば１〜２０％の再結晶率で再結晶を起すように加工温
度，圧下率等仕上最終圧延の条件を制御することで上記
の振れ値を効果的に小さくし、またその値のばらつきを
少なくし得る知見を得た。FIG. 1A schematically shows a change in the internal structure of a material before and after rolling. As shown in the figure, when the wire is rolled, the dislocation density of the structure increases due to the strain applied inside the material. After rolling, the structure inside the material absorbs dislocations by recrystallization,
In other words, the strain tends to be reduced (recovered) without absorbing the strain or causing recrystallization, but according to the study of the present inventors, it is processed so as to cause recrystallization at a recrystallization rate of 1 to 20%. By controlling the conditions of final finishing rolling such as temperature and rolling reduction, it was found that the above-mentioned run-out value can be effectively reduced and the variation of the value can be reduced.
【００１２】図１（Ｂ）はその仕上最終圧延における温
度及び圧下率と再結晶率との関係を表したもので、同図
中Ｓは再結晶域を、Ｋは回復域を、またＰはその境界
を、Ｓ 10，Ｓ30，・・・，Ｓ90はそれぞれ再結晶率１０
％，３０％，・・・，９０％の曲線を表している。FIG. 1B shows the temperature in the final finishing rolling.
This figure shows the relationship between the degree of reduction and the reduction rate and the recrystallization rate.
Medium S is the recrystallization zone, K is the recovery zone, and P is its boundary.
And S Ten, S30, ..., S90Are recrystallization rates of 10
%, 30%,..., 90%.
【００１３】本発明では、仕上最終圧延の圧延条件とし
て例えば温度９５０〜９８０℃，圧下率０．２〜０．４
の条件を採用することができる。本発明においてはま
た、コイル材各部の結晶粒度を、断面の表層から中心部
の何れもが粒度番号６番〜８番となるように制御するこ
とが望ましい。そうすることによって引き続くＣＭ加工
により高真直度の、即ち振れ値の小さい磨き棒鋼を安定
して得ることができる。In the present invention, the rolling conditions for the final finishing rolling are, for example, a temperature of 950 to 980 ° C. and a rolling reduction of 0.2 to 0.4.
Condition can be adopted. In the present invention, it is also desirable to control the crystal grain size of each part of the coil material so that any one of the central portion from the surface layer of the cross section has a grain size number of 6 to 8. By doing so, a polished steel bar having a high straightness, that is, a small runout value can be stably obtained by the subsequent CM processing.
【００１４】尚圧延加工後における再結晶率及び結晶粒
度は圧延加工後の冷却条件によっても影響を受け、従っ
て本発明ではその後の冷却方法として放冷が良いとの知
見を得た。The recrystallization rate and the grain size after rolling are affected by the cooling conditions after rolling, and therefore, the present inventors have found that cooling is preferably performed as a subsequent cooling method in the present invention.
【００１５】次に請求項２の製造方法は、素材を加熱炉
内で加熱するに際し、後に圧延加工される素材の先端部
の温度に対して後端部の温度を高く且つ先端部から後端
部にかけて所定の温度勾配を有するように素材を加熱す
るものである。According to a second aspect of the present invention, when the raw material is heated in the heating furnace, the temperature of the rear end is higher than the temperature of the front end of the material to be rolled later, and from the front end to the rear end. The material is heated so as to have a predetermined temperature gradient across the part.
【００１６】本発明の製造方法において、加熱炉から抽
出された素材は引き続いて圧延加工されることとなる
が、このとき加熱炉から出た後圧延加工されるまでの間
の時間は素材の先端部と後端部とで異なって来る。即ち
素材の後端部は先端部に比べて加熱炉から抽出された後
圧延加工されるまでの間の時間が長くなる。従って圧延
加工時の温度は先端部が最も高く、これより後端部側に
離れるほど低い温度となってしまう。In the manufacturing method of the present invention, the raw material extracted from the heating furnace is continuously rolled. At this time, the time from the heating furnace to the rolling processing is equal to the time of the leading end of the raw material. The part and the rear end come differently. That is, the time between the extraction of the rear end portion of the material and the rolling process after extraction from the heating furnace is longer than that of the front end portion. Accordingly, the temperature at the time of rolling is highest at the front end portion, and becomes lower as the distance from the rear end portion increases.
【００１７】この場合、素材に対する圧延加工の条件が
異なって来、このことがＣＭ加工を行ったときの磨き棒
鋼の振れ値を大きくし、またそのばらつきを大きくする
要因となる。In this case, the rolling conditions for the material are different, which causes the run-out value of the polished bar and the variation thereof to be large when CM processing is performed.
【００１８】ここにおいて請求項２の製造方法は、加熱
炉内で加熱を行う際に後端部側ほど温度が高くなるよう
な温度勾配を素材に持たせるもので、このようにするこ
とによって、加熱炉から抽出された素材に対し圧延加工
を施す際、先端部から後端部にかけて均等な温度で圧延
加工を施すことが可能となる。Here, in the manufacturing method of claim 2, when the material is heated in the heating furnace, the material has a temperature gradient such that the temperature becomes higher toward the rear end side. When rolling the material extracted from the heating furnace, it is possible to perform the rolling at a uniform temperature from the front end to the rear end.
【００１９】そしてこのようにすることによって磨き棒
鋼の振れ値を小さく、またその値のばらつきを少なく抑
え得ることを確認した。この請求項２の製造方法におい
ては、素材の後端部の温度を先端部の温度に対して５０
℃までの範囲で高くすることができる。It has been confirmed that the run value of the polished steel bar can be reduced and the variation in the value can be suppressed to a small value. In the manufacturing method according to the second aspect, the temperature of the rear end of the material is set to be 50 times the temperature of the front end.
It can be as high as up to ° C.
【００２０】本発明においては、ＣＭ加工に際してロー
ル矯正機による矯正を、コイル材の状態で有する捩れを
戻す向きに行うことによって、磨き棒鋼における振れ値
を小さくしまたばらつきを少なくする効果のあることを
知得した（請求項３）。In the present invention, by performing the straightening by the roll straightening machine in the direction of returning the twist in the state of the coil material at the time of CM processing, there is an effect of reducing the runout value and reducing the variation in the polished steel bar. (Claim 3).
【００２１】コイル材は一巻毎に約一回転の捩れを有し
ているが、ＣＭ加工において凸ロールと凹ロールにより
ロール矯正を行う際、その捩れを緩和する方向に矯正を
行うことで、磨き棒鋼の真直度，真円度を高めることが
できる。The coil material has a twist of about one turn for each turn, but when performing roll correction with a convex roll and a concave roll in CM processing, by performing correction in a direction to reduce the twist, The straightness and roundness of the polished steel bar can be increased.
【００２２】[0022]
【実施例】次に本発明の実施例を以下に詳述する。下記
表１に示す化学組成のＳＵＭ２３Ｌから成る素材（１５
３ｍｍ角材）を加熱炉で加熱した（図２中加熱工程１
０）。このとき、図３に示しているように素材１６の後
端部の温度が先端部に対して略３０℃高くなるように、
且つ先端部から後端部にかけて一定の温度勾配を有する
ように加熱を行った。Next, embodiments of the present invention will be described in detail. A material (15) composed of SUM23L having the chemical composition shown in Table 1 below
3 mm square material) was heated in a heating furnace (heating step 1 in FIG. 2).
0). At this time, as shown in FIG. 3, the temperature of the rear end of the material 16 is higher by about 30 ° C. than the front end.
Heating was performed so as to have a constant temperature gradient from the front end to the rear end.
【００２３】[0023]
【表１】 [Table 1]
【００２４】続いて加熱した素材１６を加熱炉から抽出
し（抽出時の温度は素材１６の先端部で１０３０℃）、
続いて粗圧延，中間圧延，仕上圧延を行って直径φ１４
ｍｍのコイル材を得た（図２中圧延加工工程１２）。続
いてこれを図４に示すコンバインドマシン（ＣＭ）を用
いて加工し、直径φ１２．０９ｍｍ，長さ２５００ｍｍ
の磨き棒鋼を得た（図２中ＣＭ加工工程１４）。Subsequently, the heated material 16 is extracted from the heating furnace (the temperature at the time of extraction is 1030 ° C. at the tip of the material 16).
Subsequently, rough rolling, intermediate rolling, and finish rolling are performed to obtain a diameter of φ14.
mm was obtained (rolling process step 12 in FIG. 2). Subsequently, this was processed using a combined machine (CM) shown in FIG. 4 to have a diameter of φ12.09 mm and a length of 2500 mm.
2 was obtained (CM processing step 14 in FIG. 2).
【００２５】図４において１８はサプライスタンドであ
って、このサプライスタンド１８によりコイル材２０を
保持し、順次後続工程へと供給する。２２は予備矯正機
であって、縦の予備矯正機２２ａと横の予備矯正機２２
ｂとを有している。これら予備矯正機２２では、図５
（Ａ）に示しているようにコイル材２０から送り出され
た線材に対し調整ロール２４によって曲げ歪を与え、矯
正を行う。In FIG. 4, reference numeral 18 denotes a supply stand. The supply stand 18 holds the coil material 20 and sequentially supplies the coil material 20 to a subsequent process. Reference numeral 22 denotes a preliminary straightening machine, which includes a vertical preliminary straightening machine 22a and a horizontal preliminary straightening machine 22.
b. In these preliminary straightening machines 22, FIG.
As shown in (A), the wire fed from the coil material 20 is subjected to bending strain by the adjusting roll 24 to correct the wire.
【００２６】２６はショットブラスト機であって、予備
矯正機２２にて予備矯正された線材をショットブラスト
処理する。２８はピンチロールであり、３０は伸線ダイ
スである。コイル材２０から送り出された線材は、図５
（Ｂ）に拡大して示しているようにこの伸線ダイス３０
を通じて引き抜かれることで伸線及び細径化される。Reference numeral 26 denotes a shot blast machine, which performs a shot blast process on the wire rod preliminarily corrected by the preliminarily straightening machine 22. 28 is a pinch roll, and 30 is a wire drawing die. The wire fed from the coil 20 is shown in FIG.
As shown in FIG.
The wire is drawn and the diameter is reduced.
【００２７】３２はキャリッジであり、また３４はスピ
ナーである。このスピナー３４もまた縦のスピナー３４
ａと横のスピナー３４ｂとから成っている。伸線ダイス
３０を通過した線材はこのスピナー３４によって本矯正
される。Reference numeral 32 denotes a carriage, and reference numeral 34 denotes a spinner. This spinner 34 is also a vertical spinner 34
a and a horizontal spinner 34b. The wire that has passed through the wire drawing die 30 is subjected to the main correction by the spinner 34.
【００２８】線材は続く工程において切断機３６により
所定寸法ごとに切断され、更にポリシング機（研磨機）
３８により表面研磨される。このポリシング機３８は、
図５（Ｃ）に示しているように一対のポリシングディス
ク４０と複数個の中間ノズル４２とを有しており、そし
てポリシングディスク４０において線材に送りを与えつ
つ表面研磨を行う。また中間ノズル４２において線材に
繰り返し曲げ歪を付与し、形状矯正を行う。The wire rod is cut into predetermined dimensions by a cutting machine 36 in a subsequent step, and is further polished (polishing machine).
38 is polished. This polishing machine 38
As shown in FIG. 5C, it has a pair of polishing disks 40 and a plurality of intermediate nozzles 42, and performs surface polishing while feeding the wires to the polishing disks 40. In addition, the intermediate nozzle 42 repeatedly applies bending strain to the wire to correct the shape.
【００２９】ポリシング機３８を通過した線材は、続い
てロール矯正機４４にて再び形状矯正される。このロー
ル矯正機４４は上ロール（凹ロール）４４ａと下ロール
（凸ロール）４４ｂとを有しており、それら一対のロー
ル４４ａ，４４ｂ間に材料を通して最終的な形状矯正を
行う。The wire rod having passed through the polishing machine 38 is subsequently shaped again by the roll straightening machine 44. The roll straightening machine 44 has an upper roll (concave roll) 44a and a lower roll (convex roll) 44b, and performs a final shape correction by passing a material between the pair of rolls 44a and 44b.
【００３０】図６は、仕上最終圧延の条件を種々変化さ
せて圧延を行い、その後ＣＭ加工を行って磨き棒鋼を製
造した場合の振れ値の測定結果を結晶粒度，ＣＭ加工の
際の扱い易さ等とともに示したものである。ここでＣＭ
加工の際の扱い易さとは、ＣＭの装置各部を調整作業す
る際の調整のし易さを意味する。FIG. 6 shows the results of measurement of run-out values when a polished steel bar was manufactured by performing rolling while changing the conditions of the final rolling at various times, and then performing CM processing. This is shown together with the like. Here CM
The ease of handling at the time of processing means the ease of adjustment at the time of adjusting each part of the CM device.
【００３１】ＣＭ加工に際しては、磨き棒鋼の振れ値が
最も小さくまたその値のばらつきが最も少なくなるよう
に各種調整、例えば予備矯正機２２における締付力，伸
線ダイス３０の種類，傾き変更，ポリシング機３８にお
けるポリシングディスク４０の回転数，ロール矯正機４
４における上，下ロール４４ａ，４４ｂの傾きや圧下力
等を調整作業する。ＣＭ加工に供されるコイル材２０と
してはその調整を簡単に行い得るものであることが望ま
しい。ここで言う扱い易さとはそのＣＭ加工工程におけ
る調整作業の容易さの程度を点数で表したものである。At the time of CM processing, various adjustments are made so that the run-out value of the polished steel bar is minimized and the variation of the value is minimized, for example, the tightening force in the preliminary straightening machine 22, the type of the wire drawing die 30, the inclination change, and the like. Number of rotation of polishing disc 40 in polishing machine 38, roll straightening machine 4
The work of adjusting the inclination, the rolling force, etc. of the upper and lower rolls 44a, 44b in 4 is performed. It is desirable that the coil material 20 provided for the CM processing can be easily adjusted. Here, the ease of handling indicates the degree of easiness of the adjustment work in the CM processing step by a score.
【００３２】尚、振れ値の測定は図８に示す方法に従っ
て行った。但し支持部２０２と２０２との間の間隔は１
ｍとした。ここで図６の結果は、ＣＭ加工工程において
ロール矯正機４４によるロール矯正の際に、線材に対し
てコイル材２０の状態で有する捩れと反対向きのの捩れ
を与えるように、即ち当初の捩れを戻す方向に加工を行
った結果である。The run-out value was measured according to the method shown in FIG. However, the distance between the support portions 202 is 1
m. Here, the result of FIG. 6 is such that, when the roll is straightened by the roll straightening machine 44 in the CM processing step, the wire is given a twist in the opposite direction to the twist in the state of the coil material 20, that is, the initial twist. This is the result of performing processing in the direction to return.
【００３３】尚、比較のために図２の加熱工程１０にお
いて加熱炉内での素材１６の加熱を、先端部から後端部
にかけて一様な温度で加熱した場合（他の工程について
は上記と同様）の振れ値の測定結果を図７（Ａ）に、ま
た図４のロール矯正機４４によるロール矯正の際に従来
と同様に加工を行った場合、即ちコイル材２０の状態で
有する捩れの方向と同じ方向に捩れが加わる状態で加工
したときの測定結果が同図（Ｂ）にそれぞれ示してあ
る。For comparison, in the heating step 10 of FIG. 2, the heating of the material 16 in the heating furnace is performed at a uniform temperature from the front end to the rear end (other steps are the same as those described above). FIG. 7A shows the measurement result of the runout value of the coil material 20 in the state of the coil material 20 when the roll correction by the roll straightening machine 44 in FIG. The measurement results when processing was performed in a state where torsion was applied in the same direction as the direction are shown in FIG.
【００３４】但しこれら図７（Ａ），（Ｂ）では、加熱
炉での加熱の際に素材１６に温度勾配を持たせるように
加熱し、且つロール矯正機４４によるロール矯正に際し
て線材に当初の捩れと反対向きの捩れを与え、当初の捩
れを戻す方向に加工した場合の測定結果とともに比較し
て示してある。However, in FIGS. 7A and 7B, the raw material 16 is heated so as to have a temperature gradient at the time of heating in the heating furnace, and the wire is initially formed into a wire when the roll is straightened by the roll straightening machine 44. The results are shown in comparison with the measurement results when a twist in the direction opposite to the twist is given and the working is performed in a direction to return the original twist.
【００３５】これら図の結果に現れているように、本発
明例に従って磨き棒鋼を製造した場合、その振れ値を小
さくまたばらつきを少なくできることが分る。以上本発
明の実施例を詳述したがこれはあくまで一例示であり、
本発明はその主旨を逸脱しない範囲において種々変更を
加えた態様で実施可能である。As can be seen from the results of these figures, when the polished steel bar is manufactured according to the example of the present invention, it can be understood that the runout value and the variation can be reduced. Although the embodiment of the present invention has been described in detail above, this is merely an example,
The present invention can be implemented in variously modified forms without departing from the spirit thereof.
【図１】（Ａ） 圧延加工による材料内部の組織の変化
の状態を模式的に表す図である。 （Ｂ） 仕上最終圧延の条件と再結晶率との関係を表す
図である。FIG. 1A is a view schematically showing a state of a change in a structure inside a material due to a rolling process. (B) It is a figure showing the relationship between the conditions of finish final rolling and the recrystallization rate.
【図２】本発明の一実施例の製造方法の全体工程を示す
図である。FIG. 2 is a view showing the entire process of a manufacturing method according to one embodiment of the present invention.
【図３】図２における加熱工程での加熱の方法を示す説
明図である。FIG. 3 is an explanatory view showing a heating method in a heating step in FIG. 2;
【図４】図２におけるＣＭ加工工程の詳細図である。FIG. 4 is a detailed view of a CM processing step in FIG. 2;
【図５】図４の予備矯正機２２，伸線ダイス３０，ポリ
シング機３８による加工の状態を示す説明図である。FIG. 5 is an explanatory diagram showing a state of processing by a preliminary straightening machine 22, a wire drawing die 30, and a polishing machine 38 in FIG.
【図６】本発明の実施例において得られた磨き棒鋼の各
種特性の測定結果を示した図である。FIG. 6 is a diagram showing measurement results of various characteristics of a polished steel bar obtained in an example of the present invention.
【図７】本発明の比較例において得られた磨き棒鋼の振
れ値の測定結果を実施例の測定値と比較して示した図で
ある。FIG. 7 is a diagram showing a measurement result of a run-out value of a polished steel bar obtained in a comparative example of the present invention in comparison with a measurement value of an example.
【図８】磨き棒鋼の振れ値の測定方法の説明図である。FIG. 8 is an explanatory diagram of a method of measuring a run-out value of a polished steel bar.
１０ 加熱工程 １２ 圧延加工工程 １４ ＣＭ加工工程 １６ 素材 ２０ コイル材 ３０ 伸線ダイス ３６ 切断機 ３８ ポリシング機（研磨機） ４４ ロール矯正機 DESCRIPTION OF SYMBOLS 10 Heating process 12 Rolling process 14 CM process 16 Material 20 Coil material 30 Wire drawing die 36 Cutting machine 38 Polishing machine (polishing machine) 44 Roll straightening machine
Claims (3)
てコイル材と成し、次いで該コイル材を伸線ダイス，切
断機，研磨機，ロール矯正機を有するコンバインドマシ
ンを用いて加工し磨き棒鋼を製造する方法において、 前記圧延加工における仕上最終圧延を、再結晶率が１〜
２０％となる条件で行うことを特徴とする磨き棒鋼の製
造方法。1. A material is heated in a heating furnace and rolled to form a coil material, and then the coil material is processed using a combined machine having a wire drawing die, a cutting machine, a polishing machine, and a roll straightening machine. In the method of manufacturing a polished steel bar, the final rolling in the rolling process, the recrystallization rate is 1 to
A method for producing a polished steel bar, which is carried out under a condition of 20%.
記素材の前記加熱炉内での加熱を、その後圧延加工され
る該素材の先端部の温度に対して後端部の温度が高く且
つ該先端部から後端部にかけて所定の温度勾配を有する
ように行うことを特徴とする磨き棒鋼の製造方法。2. The method according to claim 1, wherein the heating of the material in the heating furnace is performed such that a temperature of a rear end of the material is higher than a temperature of a front end of the material to be rolled, and A method for producing a polished steel bar, wherein the method is performed so as to have a predetermined temperature gradient from the front end to the rear end.
において、前記ロール矯正機による矯正を、前記コイル
材の状態で有する捩れを戻す向きに行うことを特徴とす
る磨き棒鋼の製造方法。3. The method of manufacturing a polished steel bar according to claim 1, wherein the straightening by the roll straightening machine is performed in a direction of returning the twist in the state of the coil material. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25667499A JP2001079603A (en) | 1999-09-10 | 1999-09-10 | Manufacture of cold finished steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25667499A JP2001079603A (en) | 1999-09-10 | 1999-09-10 | Manufacture of cold finished steel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001079603A true JP2001079603A (en) | 2001-03-27 |
Family
ID=17295904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25667499A Pending JP2001079603A (en) | 1999-09-10 | 1999-09-10 | Manufacture of cold finished steel bar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001079603A (en) |
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|---|---|---|---|---|
| KR20020030060A (en) * | 2002-03-26 | 2002-04-22 | 주식회사 뉴메탈텍 | steel coil of processing method |
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|---|---|---|---|---|
| KR20020030060A (en) * | 2002-03-26 | 2002-04-22 | 주식회사 뉴메탈텍 | steel coil of processing method |
| CN102259147B (en) * | 2011-02-22 | 2015-12-02 | 杭州华裕机械有限公司 | Alignment flat filament machine |
| CN104353697A (en) * | 2014-11-17 | 2015-02-18 | 江苏亨特宏业重工有限公司 | Cold-rolled two-ribbed steel bar production line |
| CN106540984A (en) * | 2016-12-07 | 2017-03-29 | 安徽理工大学 | A kind of fine setting beating type bar straightener and using method |
| CN108856372A (en) * | 2018-06-28 | 2018-11-23 | 江阴市龙和机械科技有限公司 | A kind of effective method of straightening machine |
| CN111097797A (en) * | 2018-10-29 | 2020-05-05 | 山东钢铁股份有限公司 | Bright material manufacturing system and method for alloy steel bar |
| CN111097797B (en) * | 2018-10-29 | 2021-07-02 | 山东钢铁股份有限公司 | Bright material manufacturing system and method for alloy steel bar |
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| US11596991B2 (en) * | 2019-08-21 | 2023-03-07 | Min Xia | Processing method of NPR steel rebar rod |
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| US11679429B2 (en) * | 2019-09-12 | 2023-06-20 | Jing-Jin Electric Technologies Co., Ltd. | Processing method of NPR steel rebar coil |
| CN110918829A (en) * | 2019-12-11 | 2020-03-27 | 姚建宏 | Steel bar straightening machine for construction machinery capable of preventing rigid collision and abrasion |
| CN114226842A (en) * | 2021-11-10 | 2022-03-25 | 铜陵有色股份铜冠电工有限公司 | Super large scale anode phosphorus copper ball straight rod plate circle shearing mechanism |
| CN114226842B (en) * | 2021-11-10 | 2024-05-14 | 铜陵有色股份铜冠电工有限公司 | Super-large-scale anode phosphor copper ball straight rod disc shearing device |
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