JP2000326001A - Continuous wire manufacturing facility row - Google Patents
Continuous wire manufacturing facility rowInfo
- Publication number
- JP2000326001A JP2000326001A JP11143156A JP14315699A JP2000326001A JP 2000326001 A JP2000326001 A JP 2000326001A JP 11143156 A JP11143156 A JP 11143156A JP 14315699 A JP14315699 A JP 14315699A JP 2000326001 A JP2000326001 A JP 2000326001A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- cooling
- coil
- mill
- rolling
- 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)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、線材の連続的製造
設備列、特に、冷間加工性に優れた機械構造用炭素鋼或
いは合金鋼線材の連続的製造設備列に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous production line of wire rods, and more particularly to a continuous production line of carbon steel or alloy steel wire rods for machine structural use having excellent cold workability.
【０００２】[0002]
【従来の技術】一般に、鋼線材の製造に際しては、加熱
炉で所定温度に加熱したビレットを熱間圧延工程で所望
のサイズに圧延した後、巻取り後、冷却して適宜の熱処
理を施してからコイル状に集束し、結束する工程を経
る。また、必要に応じてコイル状態で焼鈍等の処理を施
し、２次加工工程に送る。このような鋼線材の製造にお
いては、その熱間圧延工程及び熱処理工程について、従
来から種々の提案がなされている。2. Description of the Related Art Generally, in the production of a steel wire rod, a billet heated to a predetermined temperature in a heating furnace is rolled to a desired size in a hot rolling step, wound up, cooled, and subjected to an appropriate heat treatment. Through a step of converging into a coil shape and binding. Further, if necessary, a process such as annealing is performed in a coil state, and is sent to a secondary processing step. In the production of such a steel wire, various proposals have been made for the hot rolling step and the heat treatment step.
【０００３】例えば、線材の熱間圧延について装置面か
らみると、特に高速圧延と設備のコンパクト化を図るこ
とができかつ表面疵が少ないという利点を有する、線材
の仕上圧延機としてブロックミルが開発されている。該
ブロックミルは、８〜１０台のロールスタンドを１個の
フレーム内にタンデムに近接して配置し、圧延材にねじ
りを与えることなく圧延することが可能であり、近年多
くの圧延ラインで採用されている。[0003] For example, from the viewpoint of the apparatus for hot rolling of wire rods, a block mill has been developed as a finishing mill for wire rods, which has the advantages of high speed rolling, compactness of equipment, and few surface flaws. Have been. The block mill has eight to ten roll stands arranged in close proximity to a tandem in one frame, and can roll without giving a twist to a rolled material, and is used in many rolling lines in recent years. Have been.
【０００４】また、線材の熱間圧延を材質・組織面で考
えると、熱間圧延工程をできるだけ低温、例えば８００
℃以下に維持し仕上温度も通常圧延よりも低温に仕上げ
る方法（以下、このような圧延を制御圧延と称する）を
採用することで、γ組織の微細化を図ることができ、こ
れを後工程の徐冷と組み合わせることで、パーライト組
織の層状セメンタイトを分断、粒状化させることで、鋼
線材の軟質化を達成する技術が知られている。しかし、
鋼線材の通常圧延では、大体９００℃以上の圧延仕上温
度となるため、γ組織の微細化は望めず、鋼線材の軟質
化を図るためには、オフラインで焼鈍処理を施す必要が
あった。[0004] Considering the hot rolling of a wire in terms of material and structure, the hot rolling process is performed at a temperature as low as possible, for example, 800 ° C.
° C or lower and the finishing temperature is lower than that of normal rolling (hereinafter, such rolling is referred to as controlled rolling), so that the γ structure can be refined, and this is performed in a post-process. There is known a technique for achieving softening of a steel wire rod by dividing and granulating layered cementite having a pearlite structure by combining with slow cooling. But,
In normal rolling of a steel wire, a rolling finish temperature of about 900 ° C. or more is required, so that refinement of the γ structure cannot be expected, and in order to soften the steel wire, it was necessary to perform an offline annealing treatment.
【０００５】本発明において採用する圧延機に近い従来
例としては、特許第２８５７２７９号公報を挙げること
ができる。この特許公報には、その図１及び図２に、８
スタンドの仕上ブロックミルの後面に４スタンドの後仕
上ブロックミルを配置し、フリーサイズ圧延や精密圧延
を可能とする態様が開示されており、しかも後仕上ブロ
ックミルの入側には冷却装置を設けることも記載されて
いる。As a conventional example close to a rolling mill used in the present invention, Japanese Patent No. 2857279 can be mentioned. In this patent publication, FIG. 1 and FIG.
Disclosed is a mode in which a post-finishing block mill of four stands is arranged on the rear surface of the finishing block mill of the stand to enable free-size rolling or precision rolling, and a cooling device is provided on the entrance side of the post-finishing block mill. Are also described.
【０００６】一方、熱間圧延後の線材を巻取り後に、一
旦非同心円リング状に展開した後、コイル状に集束する
過程で、線材に直接熱処理を施す方式が多数提案されて
いる（例えば、ステルモア方式など）。これらのうち、
巻取り後の徐冷を目的に集束した線材コイルの状態で処
理する従来例としては、実公平４−３７８９８号公報に
示すように、巻取り機（レイングコーン）、リング状コ
イルの搬送路及び保熱炉を、密閉保熱カバーで覆うよう
に構成する手段、或いは特公平７−９８９７７号公報に
開示されるように、巻取り後に、通常熱処理ラインと徐
冷ラインを切り替え可能にして、次工程コンベアに送る
ようにした技術が記載されている。On the other hand, a number of methods have been proposed in which, after winding a wire after hot rolling, the wire is once developed into a non-concentric ring shape and then directly heat-treated on the wire in the process of being bundled into a coil shape (for example, Stellmore method). Of these,
As a conventional example of processing in a state of a bundle of coiled wires for slow cooling after winding, as disclosed in Japanese Utility Model Publication No. 4-37898, a winding machine (laying cone), a conveying path of a ring-shaped coil, and Means for covering the heat retaining furnace with a closed heat retaining cover, or as disclosed in Japanese Patent Publication No. 7-98977, after winding, the normal heat treatment line and the slow cooling line can be switched, and It describes a technique for sending to a process conveyor.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上述し
たブロックミルのような仕上圧延機では、８スタンドで
の総減面率が８５％程度と高く、機械構造用鋼として主
に使用されるＣ：０．４％以上の炭素鋼、合金鋼、ばね
鋼、軸受鋼のような加工発熱の大きい硬い材料では、事
実上制御圧延は不可能である。また、特許第２８５７２
７９号公報では、確かに仕上圧延機として４スタンドの
ブロックミルを設けると共に、その入側に冷却装置を設
置しているが、その狙いは結晶粒の異常成長の抑制であ
り、本発明の主旨とする制御圧延による組織微細化と、
後工程の冷却手段と組み合わせてオンラインでの冷間加
工性の優れた軟質の鋼線材の製造を目的としたものでは
ない。However, in a finishing mill such as the above-mentioned block mill, the total area reduction rate at eight stands is as high as about 85%, and C used mainly as steel for machine structural use is: In the case of hard materials such as carbon steel, alloy steel, spring steel, and bearing steel of 0.4% or more, which generate a large amount of processing heat, controlled rolling is practically impossible. Also, Japanese Patent No. 28572
In Japanese Patent No. 79, a four-stand block mill is provided as a finishing mill, and a cooling device is provided on the entrance side. The aim is to suppress abnormal growth of crystal grains. Structure refinement by controlled rolling and
It is not intended to produce a soft steel wire excellent in cold workability online in combination with a cooling means in a post-process.
【０００８】また、実公平４−３７８９８号公報では、
巻取機を密閉カバーで覆った独自の構造となるため、巻
取りから徐冷設備までが専用のものが必要となり、既設
の線材製造ラインがほとんど利用できず、設備コスト面
に問題があり、さらに、特公平７−９８９７７号公報で
は、コイルでの徐冷処理がポット方式であり、個々の装
置でそれぞれ温度制御を行うことが難しく、生産性が低
く連続操業には適していない問題がある。加えて、これ
らの従来の徐冷ラインでは、比較的高い温度（８５０℃
以上）で徐冷を開始していたため、必然的にライン長が
長くなるという不都合もあった。なお、いずれにしろ従
来のいかなる線材圧延・熱処理に関連する技術を検討し
ても、制御圧延と徐冷処理とを合わせて考慮した例は全
く見受けられない。In Japanese Utility Model Publication No. 4-37898,
Because it has a unique structure in which the winding machine is covered with a sealed cover, a dedicated equipment is required from winding to slow cooling equipment, and the existing wire production line can hardly be used. Furthermore, in Japanese Patent Publication No. Hei 7-98977, the gradual cooling process in the coil is a pot system, and it is difficult to control the temperature of each device individually, and there is a problem that productivity is low and it is not suitable for continuous operation. . In addition, these conventional slow cooling lines require relatively high temperatures (850 ° C.).
As described above, since the slow cooling was started, there was also a disadvantage that the line length was inevitably increased. In any case, even if any conventional technology related to wire rolling and heat treatment is examined, no example is considered at all that considers both controlled rolling and annealing treatment.
【０００９】従って以上のことから、冷間加工性に優れ
た機械構造用炭素鋼或いは合金鋼線材を製造するに際
し、１つの連続したラインでブロックミルによる制御圧
延手段と徐冷手段とを合理的に組み合わせ、かつ圧延操
業と徐冷操作のそれぞれを高レベルで達成し得ると共
に、これらを既存のラインに容易に組み込むことがで
き、低コストで済む連続的製造設備列の実現が強く望ま
れているのが現状である。Therefore, in view of the above, when manufacturing a carbon steel or alloy steel wire for machine structural use having excellent cold workability, the control rolling means and the slow cooling means using a block mill are rationalized in one continuous line. It is strongly desired to realize a continuous production equipment line which can achieve rolling operation and slow cooling operation at a high level, and which can be easily incorporated into an existing line, and can be operated at low cost. That is the current situation.
【００１０】本発明は、このような現状に鑑みなされた
もので、従来ブロックミルでは困難とされていた制御圧
延（低温圧延）を容易に実現でき、かつ、この制御圧延
設備とインラインで徐冷設備を効果的に組み合わせるこ
とで、効率的な制御圧延・徐冷を行うことが可能な線材
の製造設備列を提供することを目的とする。また、本発
明の他の目的は、あらゆるサイズの鋼線材の製造が容易
にでき、しかも従来２次加工の際に必須とされていた焼
鈍処理を省略することができると共に、可及的に短い徐
冷ラインで済む製造設備列を提供することにある。The present invention has been made in view of such a situation, and it is possible to easily realize controlled rolling (low-temperature rolling) which has conventionally been difficult with a block mill, and to perform slow cooling in-line with the controlled rolling equipment. It is an object of the present invention to provide a wire rod manufacturing equipment line capable of performing efficient controlled rolling and slow cooling by effectively combining the equipment. Another object of the present invention is to make it possible to easily manufacture steel wires of any size, to omit the annealing process which has been required in the conventional secondary processing, and to shorten the length as much as possible. An object of the present invention is to provide a production equipment line that requires only a slow cooling line.
【００１１】[0011]
【課題を解決するための手段】上記課題を解決するため
の本発明請求項１に係る線材の連続的製造設備列は、機
械構造用炭素鋼或いは合金鋼ビレットを所望径まで熱間
圧延する熱間圧延機と、圧延後の線材を巻取ってリング
状に形成する巻取装置と、巻取り後の線材をコイルにし
て集束する集束装置と、集束した線材をコイル状態で徐
冷を行うためのインライン熱処理炉を順次連接すると共
に、前記熱間圧延機の最終仕上圧延機として、４ロール
スタンド以下のブロックミルを用いることを特徴とす
る。このとき最終仕上圧延機のブロックミルが、減面率
２５〜６０％の範囲でかつ４ロールスタンド以下で構成
されることにより、過大な加工発熱を起こすことなく、
狙いとする制御圧延を可能とする（請求項２）。According to a first aspect of the present invention, there is provided a continuous wire production line for a wire rod for hot rolling a carbon steel or alloy steel billet for machine structure to a desired diameter. Inter-rolling machine, a winding device that winds the rolled wire into a ring shape, a bundling device that bundles the wound wire into a coil, and a device that slowly cools the bundled wire in a coil state. And a block mill having four roll stands or less is used as a final finish rolling mill of the hot rolling mill. At this time, the block mill of the final finish rolling mill is configured to have a surface reduction rate of 25 to 60% and 4 roll stands or less, so that excessive processing heat is not generated.
The desired controlled rolling is enabled (claim 2).
【００１２】また、本発明請求項３の設備列は、上記請
求項１又は２において、インライン熱処理炉が、最大圧
延能力で１時間に圧延されるコイル数の１／４〜１／１
が在炉可能な大きさを有するものであることを特徴とす
る。熱処理炉をこの大きさにしても、前述したパーライ
ト組織の層状セメンタイトの分断、粒状化が起きる０．
１℃/sec以下という非常に緩やかな冷却速度の徐冷を行
うことが可能となり、徐冷ライン長も余り長くする必要
がない。Further, in the equipment row according to claim 3 of the present invention, the inline heat treatment furnace according to claim 1 or 2 is characterized in that the in-line heat treatment furnace has a maximum rolling capacity of 1/4 to 1/1 of the number of coils rolled in one hour.
Is characterized in that it has a size capable of being placed in a furnace. Even if the heat treatment furnace is set to this size, the above-mentioned layered cementite having a pearlite structure is cut off and granulated.
It is possible to perform slow cooling at a very slow cooling rate of 1 ° C./sec or less, and it is not necessary to increase the length of the slow cooling line.
【００１３】本発明請求項４の設備列は、上記請求項１
〜３のいずれかにおいて、巻取装置と集束装置との間
に、線材を連続した非同心円リング状にして温度を低下
させることなく保定して搬送する保温カバー付き調整冷
却搬送装置を設けたことを特徴とし、また請求項５で
は、巻取装置で線材をＡｒ1 変態点以上で巻取り、保温
カバー付き調整冷却搬送装置においてもＡｒ1 変態点を
下回ることなく搬送して集束装置及び徐冷ラインに送る
ことを特徴とする。この保定搬送装置により、巻取装置
を密閉カバーで覆うといった特殊な巻取装置がなくと
も、線材リングを常に安定した状態で徐冷ラインに供給
することができるのである。また、既設のラインで巻取
装置と集束装置間の距離が長すぎるといったレイアウト
上の制約がある場合にも、本発明を容易にかつ安価に実
施適用可能とするものである。更に、保温カバー内で搬
送させる際に、雰囲気温度を選定することで、後工程と
なる徐冷の開始温度に調整するとともに鋼材の温度バラ
ツキを均温化するという機能も有する。According to a fourth aspect of the present invention, there is provided the equipment train according to the first aspect.
In any one of (1) to (3), between the winding device and the convergence device, an adjustment cooling / conveying device with a heat retaining cover for keeping the wire in a continuous non-concentric ring shape without decreasing the temperature and conveying the wire is provided. According to a fifth aspect of the present invention, the wire is wound by the winding device at the Ar 1 transformation point or higher, and is conveyed without falling below the Ar 1 transformation point in the adjusted cooling / conveying device with the heat retaining cover. It is characterized by sending to the line. With this retaining and conveying device, the wire ring can always be supplied to the slow cooling line in a stable state without a special winding device such as covering the winding device with a closed cover. Further, the present invention can be easily and inexpensively implemented even when there is a layout restriction such as an excessively long distance between the winding device and the focusing device in the existing line. Furthermore, when transported inside the heat retaining cover, by selecting the ambient temperature, it has a function of adjusting the temperature to the starting temperature of the slow cooling as a post-process and equalizing the temperature variation of the steel material.
【００１４】また、本発明請求項６の設備列は、請求項
１〜５のいずれかにおいて、最終仕上圧延機の入側に、
最大圧延速度で１秒間に進行する距離の１／１０以上の
水冷・復熱帯を設けたことを特徴とする。この水冷・復
熱帯により材質を劣化させることなく、所望の線材を最
終仕上圧延機のブロックミルに送り込み、制御圧延を実
施し得ることになる。さらに、本発明請求項７の設備列
は、請求項１〜６のいずれかにおいて、集束装置にて集
束される線材コイルは、コイル内径側に挿入するステム
によりタイトな状態に集束され、次のインライン熱処理
炉に送られることを特徴とする。線材コイルをルーズで
なくタイトな状態に集束して熱処理炉に送ることによ
り、徐冷ラインの長さを冗長にせずに、上述した緩やか
な冷却を効率的に達成するとともに搬送時の安定性も確
保可能とするものである。[0014] Further, the equipment line according to claim 6 of the present invention is characterized in that, in any one of claims 1 to 5, the inlet line of the final finishing mill is
It is characterized by providing a water-cooled / retrotropic zone that is at least 1/10 of the distance traveled per second at the maximum rolling speed. The desired wire rod can be fed to the block mill of the final finishing rolling mill and controlled rolling can be performed without deteriorating the material due to the water cooling and reversion. Further, according to the equipment row of claim 7 of the present invention, in any one of claims 1 to 6, the wire coil focused by the focusing device is focused in a tight state by a stem inserted into the coil inner diameter side, and the next It is characterized by being sent to an in-line heat treatment furnace. By concentrating the wire coil in a tight state rather than loosely and sending it to the heat treatment furnace, the above-mentioned slow cooling is efficiently achieved without increasing the length of the slow cooling line, and the stability during transportation is also improved. It can be secured.
【００１５】[0015]
【発明の実施の形態】本発明者らは、ブロックミルによ
る制御圧延を可能にして仕上圧延機出側で７５０℃程度
の温度で線材を出し、巻取り以後の工程、特に徐冷ライ
ンに対してこの低温の線材リングを安定してそのまま供
給でき、かつ、徐冷ラインにおいても目標とする０．１
℃/sec以下の冷却速度を達成して、所望の材質の鋼線材
を得ることができると共に、既存の線材圧延ラインを大
幅に改造することのない、極めて生産性及び実用性の高
い線材製造装置列の実現について種々研究・実験を重ね
た結果、本発明を完成したものである。BEST MODE FOR CARRYING OUT THE INVENTION The present inventors made it possible to carry out controlled rolling by a block mill, take out a wire at a temperature of about 750 ° C. on the exit side of a finishing rolling mill, and perform processes after winding, particularly in a slow cooling line. It is possible to stably supply the low-temperature wire ring as it is, and to achieve the target 0.1 degree in the slow cooling line.
Achieving a cooling rate of ℃ / sec or less, a steel wire rod of the desired material can be obtained, and a wire production equipment with extremely high productivity and practicality without significantly modifying the existing wire rod rolling line. The present invention was completed as a result of repeated studies and experiments on the realization of the train.
【００１６】以下、本発明の実施の形態を図面に基づい
て説明する。図１は、本発明に係る線材製造設備列の一
例を示す概略図である。図において、１は仕上前ブロッ
クミルであり、該仕上前ブロックミル１は、例えば総減
面率が８５％以上となる８〜１０スタンドからなる公知
の形式である。なお、該仕上前ブロックミル１の入側に
は水冷帯３ａが設置されているが、その前には図示はし
ていないが、素材となるビレットを加熱する加熱炉、所
定温度に加熱されたビレットを所望サイズに熱間圧延す
るための粗圧延機群及び中間圧延機群が配置されてい
る。Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating an example of a wire rod manufacturing equipment row according to the present invention. In the drawings, reference numeral 1 denotes a block mill before finishing, and the block mill 1 before finishing is a known type including 8 to 10 stands having a total area reduction rate of 85% or more, for example. A water-cooling zone 3a is installed on the entrance side of the pre-finish block mill 1, and although not shown before that, a heating furnace for heating a billet as a material is heated to a predetermined temperature. A group of rough rolling mills and a group of intermediate rolling mills for hot rolling a billet to a desired size are arranged.
【００１７】また、２は前記仕上前ブロックミル１の後
面に設置される仕上ブロックミルであり、線材を最終的
なサイズまで減面するものである。３ｂは仕上ブロック
ミル２の入側に設けた水冷帯、３ｃは仕上ブロックミル
２の出側に設けた水冷帯、４は熱間圧延されてきた線材
をレイングヘッドにて所定の径に巻き取るための巻取
機、５は巻き取られた線材コイルを非同心円リング状に
展開して載置し搬送する調整冷却コンベア、６は該調整
冷却コンベア５の搬送路を被覆する保温カバー、７はコ
ンベア上を送られてきた線材リング１０を垂直に落下さ
せて下方に待機する集束ステム９上にコイル状に集束す
るための集束装置である。さらに、８は前記集束装置７
の位置に一端側が接続され、他端側が任意の方向及び距
離だけ延びるインライン熱処理炉であり、該熱処理炉８
はその底部には搬送コンベア１２が敷設されており、ス
テム９に保持され集束された線材コイル１１を所定の速
度で搬送しながら徐冷する。なお、熱処理炉８は、実際
のものと異なり便宜上内部を透視しうる状態で示してい
る。Reference numeral 2 denotes a finishing block mill installed on the rear surface of the pre-finishing block mill 1 for reducing the surface of the wire rod to a final size. Reference numeral 3b denotes a water-cooling belt provided on the entrance side of the finishing block mill 2, 3c denotes a water-cooling belt provided on the exit side of the finishing block mill 2, and 4 denotes a hot rolled wire rod wound up to a predetermined diameter by a laying head. 5 is an adjusting cooling conveyor that unwinds the wound wire rod coil in a non-concentric ring shape, and mounts and transports it. 6 is a heat insulating cover that covers the transport path of the adjusting cooling conveyor 5. This is a convergence device for vertically dropping the wire ring 10 sent on the conveyor and converging it in a coil shape on the convergence stem 9 waiting below. Further, 8 is the focusing device 7
Is an in-line heat treatment furnace, one end of which is connected to the position shown in FIG.
A transport conveyor 12 is laid at the bottom of the wire rod, and the wire coil 11 held and held by the stem 9 is gradually cooled while being transported at a predetermined speed. It should be noted that the heat treatment furnace 8 is shown in a state where the inside can be seen through for convenience, unlike the actual furnace.
【００１８】図２は図１に示す全体装置を平面的に表し
た模式図であり、図１と同一符号は同一の装置を示して
いる。ただし、図２では、徐冷を終えてインライン熱処
理炉８から出たコイル集束ステムは、さらに搬送されて
適当な位置でコイルだけを払い出された後、集束ステム
だけが熱処理炉８の一端側から装入されて再度集束作業
に供されるという循環路を形成するラインを示してい
る。なお、水冷帯３ｂ、３ｃは複数個から構成されるこ
ともある。FIG. 2 is a plan view schematically showing the entire apparatus shown in FIG. 1, and the same reference numerals as those in FIG. 1 indicate the same apparatus. However, in FIG. 2, after the coil cooling stem that has left the in-line heat treatment furnace 8 after the slow cooling is further transported and only the coil is paid out at an appropriate position, only the focusing stem is connected to one end of the heat treatment furnace 8. 2 shows a line forming a circulation path that is charged from the outside and is again provided for a focusing operation. The water cooling zones 3b and 3c may be composed of a plurality.
【００１９】また、図３は、巻取機以降の調整冷却コン
ベア５、集束装置７及びインライン熱処理炉８の具体的
な構造例を示す断面図である。リング状線材１０を搬送
する調整冷却コンベア５は、その全周を断熱性の保温カ
バー６で覆われており、これにより圧延から集束に至る
までの温度低下を防止し、制御圧延効果を最大限に発揮
させると同時に、徐冷開始をＡｒ1 変態点を下回ること
のない所定温度で行わせる保定コンベアの役目を果た
す。望ましくは保温カバー６内にはラジアントチューブ
或いはヒータの如き加熱装置１３が設置され、必要に応
じてカバー内を加熱して温度低下を防ぐようになってい
る。なお、この調整冷却コンベア５は、その保定時間に
応じた長さとすること、もしくは保定の必要がない場合
には省略することもでき、巻取後に直ちに線材をコイル
状に集束してもよい。FIG. 3 is a sectional view showing a specific structural example of the conditioning cooling conveyor 5, the convergence device 7, and the in-line heat treatment furnace 8 after the winding machine. The conditioning cooling conveyor 5 for transporting the ring-shaped wire 10 is covered with a heat insulating cover 6 around the entire circumference, thereby preventing a temperature drop from rolling to convergence and maximizing the effect of controlled rolling. And at the same time, serves as a conveyer that causes the slow cooling start to be performed at a predetermined temperature that does not fall below the Ar 1 transformation point. Desirably, a heating device 13 such as a radiant tube or a heater is installed in the heat retaining cover 6, and the inside of the cover is heated as necessary to prevent a temperature drop. The adjusted cooling conveyor 5 may have a length corresponding to the holding time, or may be omitted when the holding is not necessary. The wire may be bundled into a coil immediately after winding.
【００２０】調整冷却コンベア５の終端に配置する集束
装置７は、落下してくる線材リングを下方に待機してい
る集束ステム９をリング内径側に挿入する形で受け、一
定量の線材コイルを形成するものである。この場合集束
される線材コイルは、徐冷時の温度バラツキを抑えるた
めに、できるだけタイトなコイルの状態で集束すること
が好ましい。なお、集束位置についても、保温カバー６
と連接した断熱性の壁体で覆うことが望ましい。A convergence device 7 arranged at the end of the conditioning cooling conveyor 5 receives the falling wire ring in a form in which the convergence stem 9 waiting below is inserted into the inner diameter side of the ring, and receives a fixed amount of wire coil. To form. In this case, it is preferable that the bundled wire coil be bundled in a state of a coil that is as tight as possible in order to suppress temperature variation during slow cooling. It should be noted that the focusing position is also set to
It is desirable to cover with a heat-insulating wall connected to the substrate.
【００２１】さらに、集束位置から設置されるインライ
ン熱処理炉８の炉壁も連続した断熱性材料で構築され
る。該熱処理炉８の端部には集束ステム９の炉内への装
入と炉外への排出を行うための扉（入側扉が１４、出側
扉が１５）が設けられている。また、熱処理炉８内での
ステムの搬送を行うコンベア１２は、ローラコンベア或
いはチェーンコンベアなど適宜の搬送手段を選べばよ
い。さらに、熱処理炉８内にもラジアントチューブの如
き加熱装置１６を設置しておき、温度低下を必要に応じ
て防止して、炉内において０．１℃/sec以下の非常に緩
やかな冷却速度で徐冷し得るようにすることが好まし
い。Further, the furnace wall of the in-line heat treatment furnace 8 installed from the focusing position is also constructed of a continuous heat insulating material. At the end of the heat treatment furnace 8, a door (14 on the entrance side and 15 on the exit side) for loading the focusing stem 9 into the furnace and discharging it out of the furnace is provided. Further, as the conveyor 12 for transferring the stem in the heat treatment furnace 8, an appropriate transfer means such as a roller conveyor or a chain conveyor may be selected. Further, a heating device 16 such as a radiant tube is also installed in the heat treatment furnace 8 to prevent a temperature decrease as necessary, and to provide a very gentle cooling rate of 0.1 ° C./sec or less in the furnace. It is preferable to be able to cool slowly.
【００２２】以下、本発明における圧延装置の好適な態
様と、水冷・復熱帯（特に、仕上ブロックミル２入側の
水冷・復熱帯）及びインライン熱処理炉の好適な長さに
ついて説明する。仕上ブロックミル２は、４ロールスタ
ンド以下のブロックミルから形成され、その減面率は２
５〜６０％の範囲とする。図４は、４ロールスタンドの
ブロックミルにおいて、仕上減面率と仕上ミル内温度上
昇との関係を示すもので、仕上圧延での温度上昇を６０
℃を許容値とすれば、適正な減面率は２５〜６０％の範
囲であることが分かる。なお、本発明者らの検討によれ
ば、後述する水冷帯３ｂで過冷組織が発生しない範囲で
できるだけ冷却した後、仕上圧延での温度上昇を６０℃
以下に抑制すれば、制御圧延の効果が十分得られること
が知見されたことから、これを許容値とした。Hereinafter, a preferred embodiment of the rolling apparatus according to the present invention, and a preferred length of the water-cooled / retrograde (particularly, water-cooled / retrograde at the entrance of the finishing block mill 2) and the in-line heat treatment furnace will be described. The finishing block mill 2 is formed from a block mill having a 4-roll stand or less, and the area reduction rate is 2
The range is 5 to 60%. FIG. 4 shows the relationship between the finish area reduction rate and the temperature rise in the finishing mill in a 4-roll stand block mill.
Assuming that C is an allowable value, it can be seen that the appropriate area reduction rate is in the range of 25 to 60%. According to the study of the present inventors, after cooling as much as possible in a water-cooled zone 3b described below in a range where a supercooled structure does not occur, the temperature rise in finish rolling is increased by 60 ° C.
It has been found that the effect of controlled rolling can be sufficiently obtained if the content is suppressed as follows.
【００２３】即ち、仕上圧延での減面率が２５％未満で
あると、材料に加わる歪が十分でなく断面内で不均質な
歪分布となり、局部的に結晶粒が成長し、粒径が不均一
になって「粗大粒」と呼ばれる現象が発生してしまい、
被削性等の加工性を著しく劣化させる。また、減面率が
６０％を超えると、加工発熱による温度上昇が急激に大
きくなり、狙いとする制御圧延が不可能となる。しか
も、仕上ブロックミルにおける各ロールでの最適な平均
減面率が約１５％であることを考慮すれば、ブロックミ
ルのロールスタンド数は２以上、４以下とすることが好
ましい。このロールスタンド数は圧延対象となる線材の
サイズなどの条件により、４ロールスタンド以下の範囲
で適宜変更することができる。That is, if the reduction in area in the finish rolling is less than 25%, the strain applied to the material is not sufficient, resulting in a non-uniform strain distribution in the cross section, and the crystal grains grow locally and the grain size increases. It becomes uneven and a phenomenon called "coarse grain" occurs,
Workability such as machinability is significantly deteriorated. On the other hand, if the area reduction rate exceeds 60%, the temperature rise due to the heat generated by processing becomes sharply large, and the targeted controlled rolling becomes impossible. Moreover, considering that the optimum average area reduction rate of each roll in the finishing block mill is about 15%, it is preferable that the number of roll stands of the block mill is 2 or more and 4 or less. The number of roll stands can be appropriately changed within a range of four roll stands or less depending on conditions such as the size of a wire to be rolled.
【００２４】次に、仕上ブロックミル２の入側に配置す
る水冷帯３ｂは、仕上前ブロックミル１出側の鋼材温度
が９００℃程度にまで達することから、これを次の仕上
ブロックミル２で良好な制御圧延を行うための仕上入側
温度である７００℃程度に維持することが必須の役割と
なる。また、この水冷帯３ｂを含むミル間のゾーンは、
水冷機能と共に水冷時に発生した断面内の温度分布を均
等化する復熱機能を有することも合わせて要求され、こ
れを果たすためには両ミル間の距離（図２のｄで示す）
を特定することが重要である。この場合、水冷は極短時
間でよいが、復熱のためには、少なくとも０．１秒程度
の時間が必要であり、この復熱時間を十分とらないと鋼
材の断面内で過大な温度差を残存させることになり、仕
上圧延での不均一な材質発生の原因となる。Next, since the steel material temperature at the exit side of the block mill 1 before finishing reaches about 900 ° C., the water cooling zone 3 b arranged on the entrance side of the finishing block mill 2 is fed to the next finishing block mill 2. It is essential that the temperature be maintained at about 700 ° C., which is the finish-side temperature for performing good controlled rolling. The zone between the mills including the water-cooled zone 3b is:
In addition to the water cooling function, it is also required to have a heat recovery function to equalize the temperature distribution in the cross section generated during water cooling, and to achieve this, the distance between both mills (shown by d in FIG. 2)
It is important to identify In this case, water cooling may be performed in a very short time, but at least about 0.1 second is required for recuperation. If this recuperation time is not sufficient, an excessive temperature difference in the cross section of the steel material will occur. , Which may cause uneven material generation in finish rolling.
【００２５】以上の理由により、仕上前ブロックミル１
と仕上ブロックミル２間の水冷・復熱のためには、少な
くとも最大圧延速度（仕上ブロックミル出側速度）で進
行する距離の１／１０以上の距離をとることが必要であ
る。例えば、最大圧延速度が１００m/sec であれば、最
小でも１０ｍの水冷・復熱ゾーンを設けることが要求さ
れる。このとき、仕上ブロックミル入側速度は、仕上ブ
ロックミル内で鋼材が減面される割合に相当する分だけ
最大圧延速度より遅くなり、上記の復熱のために必要な
０．１秒より若干長い時間が確保でき、この時間帯で水
冷が完了可能である。また、当該ゾーン長は、長いほど
復熱を十分にできるという利点はあるものの全体の設備
を長大にしてしまうばかりでなく、通材性を悪化させる
という問題を引き起こすので、必要以上に長くすること
は好ましくなく、最大圧延速度の１／２以下に抑えるの
が望ましいが、本発明は、このゾーン長の上限を特に規
定するものではない。For the above reasons, the block mill 1 before finishing
In order to perform water cooling and reheating between the and the finishing block mill 2, it is necessary to take a distance of at least 1/10 or more of a distance that travels at a maximum rolling speed (finishing block mill exit side speed). For example, if the maximum rolling speed is 100 m / sec, it is required to provide a water cooling / reheating zone of at least 10 m. At this time, the finishing block mill entry side speed is lower than the maximum rolling speed by an amount corresponding to the rate at which the steel material is reduced in the finishing block mill, and is slightly less than the 0.1 second required for the reheating. A long time can be secured, and water cooling can be completed in this time zone. In addition, although the zone length has the advantage that the longer the zone length, the more the recuperation can be sufficiently performed, it not only increases the length of the entire facility, but also causes a problem that the material permeability is deteriorated. Is not preferable, and it is desirable to suppress the rolling speed to 1/2 or less of the maximum rolling speed. However, the present invention does not particularly limit the upper limit of the zone length.
【００２６】さらに、制御圧延に引き続く徐冷を効果的
に行うためにインライン熱処理炉８の長さ、換言すれば
線材コイルの在炉時間についても特定することが望まし
い。すなわち、目標とする軟質な線材を得るためには、
変態温度域をコイル全体にわたって徐冷することが要求
されることから、徐冷速度の目標の目安である０．１℃
/sec以下という制約のもとで、熱処理炉への線材コイル
の装入温度が決まれば在炉時間は求まる。Further, it is desirable to specify the length of the in-line heat treatment furnace 8, in other words, the in-furnace time of the wire coil in order to effectively perform the slow cooling subsequent to the controlled rolling. That is, in order to obtain the target soft wire,
Since it is required to gradually cool the transformation temperature range over the entire coil, the target of the slow cooling rate is 0.1 ° C.
Under the restriction of not more than / sec, if the charging temperature of the wire coil into the heat treatment furnace is determined, the furnace time can be determined.
【００２７】図５は、線材コイルの在炉時間と温度との
関係を示すものである。図の右上で模式的に示すよう
に、線材コイルにはコイル外表層（斜線部で図のと
の間）とコイル内部（図のとの間）に分けられる
が、コイル外表層は炉外で放冷すると徐冷速度の目標を
超える早い冷速で冷却される部分であり、熱処理炉内で
変態温度域を下回る温度まで徐冷する必要がある。一
方、コイル内部は炉外で放冷しても徐冷速度の目標以下
で冷却される部分であり、変態未完了のまま炉外に排出
しても十分な徐冷速度が得られる。従って、コイル外表
層の最大冷速部（図５の）が目標冷速０．１℃/secに
なる如く炉温度を設定して徐冷を行うとき、コイル外表
層の最も冷速が小さい部位（図５の）は、コイル形状
や線径にかかわらず、０．０７℃/secであることを見出
した。FIG. 5 shows the relationship between the furnace time and the temperature of the wire rod coil. As schematically shown in the upper right of the figure, the wire rod coil is divided into a coil outer surface layer (between the figures in the shaded area) and an inner coil (between the figures). When left to cool, it is a part that is cooled at a faster cooling rate than the target of the slow cooling rate, and needs to be gradually cooled in the heat treatment furnace to a temperature below the transformation temperature range. On the other hand, the inside of the coil is a portion that is cooled below the target of the slow cooling rate even if it is allowed to cool outside the furnace, and a sufficient slow cooling rate can be obtained even if the coil is discharged outside the furnace without completing the transformation. Therefore, when slow cooling is performed by setting the furnace temperature so that the maximum cooling speed portion (in FIG. 5) on the outer surface of the coil becomes the target cooling speed of 0.1 ° C./sec, the portion where the cooling speed on the outer surface of the coil is the lowest is obtained. (Of FIG. 5) was found to be 0.07 ° C./sec regardless of the coil shape and wire diameter.
【００２８】前記０．０７℃/secで徐冷開始温度をＡｒ
1 点直上から変態が完了するまで徐冷必要温度域を下回
るまでの大略６０℃の区間を徐冷するには、少なくとも
０．２５hrが必要であり、熱処理炉の大きさを決定する
にあたっての下限を示す指標である。このとき操業上の
変動要素としてコイル内の温度バラツキを考慮すると、
徐冷開始温度はＡｒ1 点直上よりも若干高めに設定する
必要があるため、在炉時間は望ましくは０．５hr以上の
在炉時間を確保することで品質の安定化が図れる。但
し、在炉時間を１．０hr以上に長くしても徐冷の効果は
飽和して向上は見られず、単に冗長な設備となる。その
結果、熱処理炉の大きさは、最大圧延能力で１hrに圧延
されるコイル数の１／４〜１／１が在炉可能な大きさと
する必要がある。At the above 0.07 ° C./sec, the slow cooling start temperature is set to Ar
It takes at least 0.25hr to gradually cool the section of approximately 60 ° C from just above one point until the transformation is completed and the temperature falls below the required temperature range, and the lower limit for determining the size of the heat treatment furnace is required. Is an index indicating At this time, considering the temperature variation in the coil as an operational variable,
Since the slow cooling start temperature needs to be set slightly higher than just above Ar 1 point, the stabilization of the quality can be achieved by securing the furnace time preferably 0.5 hours or more. However, even if the furnace time is increased to 1.0 hour or more, the effect of slow cooling is saturated and no improvement is observed, and the facility is simply redundant. As a result, it is necessary that the size of the heat treatment furnace is such that 1/4 to 1/1 of the number of coils rolled for 1 hour at the maximum rolling capacity can be used in the furnace.
【００２９】以下、図１に示す本発明の線材製造設備列
に基づいて一連の流れを説明する。まず、図示しない加
熱炉で炭素鋼又は合金鋼ビレットを１０００℃以上に加
熱してから粗圧延機及び中間圧延機に装入して所定のサ
イズに圧延した後、水冷帯３ａを経て仕上前ブロックミ
ル１に装入する。この仕上前ブロックミル１で少なくと
も８５％の減面率で圧延された材料は、水冷帯３ｂで水
冷・復熱されて仕上ブロックミル２に入り、そこで２５
〜６０％の減面率で最終線径に仕上圧延された後、７５
０℃〜８００℃の仕上圧延温度で出され、水冷帯３ｃを
経て巻取装置４により所望径の線材リング１０として調
整冷却コンベア５上に排出される。Hereinafter, a series of flows will be described based on the wire manufacturing equipment train of the present invention shown in FIG. First, a carbon steel or alloy steel billet is heated to 1000 ° C. or higher in a heating furnace (not shown), and then charged into a rough rolling mill and an intermediate rolling mill and rolled to a predetermined size. Load into Mill 1. The material rolled by the pre-finishing block mill 1 with a reduction in area of at least 85% enters the finishing block mill 2 after being water-cooled and re-heated in the water-cooling zone 3b.
After finish rolling to the final wire diameter with a reduction in area of ~ 60%, 75
It is discharged at a finish rolling temperature of 0 ° C. to 800 ° C. and is discharged as a wire rod 10 having a desired diameter onto a cooling cooling conveyor 5 by a winding device 4 through a water cooling zone 3c.
【００３０】保温カバー６で覆った調整冷却コンベア５
では、線材リングは非同心円状の形でかつＡｒ1 変態点
を下回ることのない温度を維持しながら搬送され、集束
装置７に至って集束ステム９上に落下され、一定量の線
材がタイトな状態で集束され、一個の線材コイル１１が
得られると共に、インライン熱処理炉８内を一定の速度
で搬送されて徐冷される。炉内では順次集束された線材
コイルを載置した集束ステムが一定間隔をおいて搬送さ
れることになる。徐冷開始温度は大体７１０℃〜７８０
℃であり、熱処理炉内では０．１℃/secの冷却速度で徐
冷され、約６５０℃程度で炉の出側扉から排出されて放
冷される。放冷中に線材コイルは変態を終了し、任意の
位置でコイルが払い出され結束工程に向かう。なお、前
記保温カバー６内及び熱処理炉８内では、温度が低下す
るおそれがある場合には加熱装置を用いて適宜加熱する
ことができる。Adjustment cooling conveyor 5 covered with heat insulating cover 6
In the above, the wire rod is transported in a non-concentric shape while maintaining a temperature that does not fall below the Ar 1 transformation point, falls to the focusing device 7 and falls on the focusing stem 9, and a certain amount of the wire is in a tight state. And a single wire coil 11 is obtained, and is conveyed in the in-line heat treatment furnace 8 at a constant speed and gradually cooled. In the furnace, the converging stems on which the sequentially converged wire rods are mounted are conveyed at regular intervals. Slow cooling start temperature is approximately 710 ° C to 780
° C, and is gradually cooled in the heat treatment furnace at a cooling rate of 0.1 ° C / sec, and is discharged from the outlet door of the furnace at about 650 ° C and allowed to cool. During cooling, the wire coil finishes the transformation, the coil is discharged at an arbitrary position, and the process proceeds to the binding process. In addition, in the heat insulation cover 6 and the heat treatment furnace 8, when there is a possibility that the temperature may decrease, the heating can be appropriately performed using a heating device.
【００３１】[0031]
【発明の効果】以上説明した本発明に係る線材の製造設
備列により得られる効果は次の通りである。 （１）線材圧延では困難とされていたブロックミルによ
る制御圧延装置と、線材をコイル状に集束した状態でイ
ンラインで徐冷する装置とを合理的に連接することを初
めて実現した。 （２）上記の如く制御圧延と徐冷とを組み合わせること
により、冷間加工性に優れた機械構造用鋼線材を、オフ
ラインで別途熱処理することなく、オンラインで製造す
ることが可能となった。 （３）既設の線材製造ラインを大幅に改造することなく
本発明を適用でき、かつ、オフラインでの焼鈍設備も省
略できるので、設備費を低減することができる。The advantages obtained by the above-described wire rod manufacturing equipment train according to the present invention are as follows. (1) For the first time, it is possible to rationally connect a controlled rolling device using a block mill, which has been difficult in wire rod rolling, and a device that gradually cools in-line while the wires are bundled in a coil shape. (2) By combining the controlled rolling and the slow cooling as described above, it has become possible to manufacture a steel wire rod for a machine structure having excellent cold workability online without separately performing a heat treatment offline. (3) The present invention can be applied without significantly modifying an existing wire rod production line, and offline annealing equipment can be omitted, so that equipment costs can be reduced.
【００３２】（４）巻取装置の後に調整冷却搬送装置を
設ける場合には、巻取り後の線材をリング状で安定して
保定できるので、次の集束及び徐冷ラインに常に最善の
状態で線材を供給できる。 （５）最終仕上圧延機のブロックミルの入側に一定長の
水冷・復熱帯を設けることにより、ブロックミルに入る
材料の温度・性質を調整でき、制御圧延をより良好な状
態で達成することを可能とする。(4) In the case where the adjusting cooling and conveying device is provided after the winding device, the wire after winding can be stably held in a ring shape, so that the next bundle and the slow cooling line are always kept in the best condition. Wire can be supplied. (5) By providing a certain length of water-cooled / retrotropic zone on the entry side of the block mill of the final finishing mill, it is possible to adjust the temperature and properties of the material entering the block mill, and achieve controlled rolling in a better condition. Is possible.
【図１】本発明に係る線材の連続的製造設備列の一実施
形態を示す全体概略斜視図である。FIG. 1 is an overall schematic perspective view showing an embodiment of a continuous production line for wire rods according to the present invention.
【図２】本発明に係る線材の連続的製造設備列の配置例
を示す平面模式図である。FIG. 2 is a schematic plan view showing an example of arrangement of a continuous production line of wire rods according to the present invention.
【図３】本発明に係る線材の連続的製造設備列における
巻取り機以降の各装置を示す断面図である。FIG. 3 is a cross-sectional view showing each device after a winder in a continuous production line of wire rods according to the present invention.
【図４】本発明で採用する４ロールスタンドのブロック
ミルを用いた場合の減面率とミル内温度上昇の関係を示
す図である。FIG. 4 is a diagram showing a relationship between a reduction in area and an increase in temperature inside a mill when a 4-roll stand block mill used in the present invention is used.
【図５】本発明で採用するインライン熱処理炉における
在炉時間と線材コイル温度の関係を示す図である。FIG. 5 is a diagram showing the relationship between the furnace time and the wire coil temperature in the in-line heat treatment furnace employed in the present invention.
１ 仕上前ブロックミル ２ 仕上ブロッ
クミル ３ａ、３ｂ、３ｃ 水冷装置 ４ 巻取装置
（レイングヘッド） ５ 調整冷却コンベア ６ 保温カバー ７ 集束装置 ８ インライン
熱処理炉 ９ ステム １０ 線材リング １１ 線材コイル １２ 搬送コン
ベア １３、１６ 加熱装置 １４ 炉の入側
扉 １５ 炉の出側扉DESCRIPTION OF SYMBOLS 1 Pre-finishing block mill 2 Finishing block mill 3a, 3b, 3c Water cooling device 4 Winding device (laying head) 5 Adjusting cooling conveyor 6 Heat retention cover 7 Focusing device 8 In-line heat treatment furnace 9 Stem 10 Wire rod 11 Wire rod 12 Transport conveyor 13 , 16 Heating device 14 Furnace entrance door 15 Furnace exit door
フロントページの続き (72)発明者 土田 喜一朗 北海道室蘭市仲町12番地 新日本製鐵株式 会社室蘭製鐵所内 Ｆターム(参考） 4E002 AA07 AB06 AC14 BC07 BD03 BD07 BD09 4K032 BA02 CB01 CB02 CD01 4K043 AA02 BA04 BA05 EA02 EA03 EA07 FA03 FA11 GA01 GA06Continuing from the front page (72) Inventor Kiichiro Tsuchida 12 Nakamachi, Muroran-shi, Hokkaido F-term in Muroran Works, Nippon Steel Corporation (Reference) 4E002 AA07 AB06 AC14 BC07 BD03 BD07 BD09 4K032 BA02 CB01 CB02 CD01 4K043 AA02 BA04 BA05 EA02 EA03 EA07 FA03 FA11 GA01 GA06
Claims (7)
を所望径まで熱間圧延する熱間圧延機と、圧延後の線材
を巻取ってリング状に形成する巻取装置と、巻取り後の
線材をコイルにして集束する集束装置と、集束した線材
をコイル状態で徐冷を行うためのインライン熱処理炉を
順次連接すると共に、前記熱間圧延機の最終仕上圧延機
として、４ロールスタンド以下のブロックミルを用いる
ことを特徴とする線材の連続的製造設備列。1. A hot rolling mill for hot rolling a carbon steel or alloy steel billet for machine structure to a desired diameter, a winding device for winding a rolled wire into a ring shape, and A consolidation device for consolidating the wire into a coil, and an in-line heat treatment furnace for gradually cooling the condensed wire in a coil state are sequentially connected, and the final finishing rolling mill of the hot rolling mill is a four-roll stand or less. A continuous production line of wire rods characterized by using a block mill.
範囲とすることを特徴とする請求項１記載の線材の連続
的製造設備列。2. The continuous production line for wire rods according to claim 1, wherein the area reduction rate of the block mill is in the range of 25 to 60%.
１時間に圧延されるコイル数の１／４〜１／１が在炉可
能な大きさを有するものであることを特徴とする請求項
１又は２記載の線材の連続的製造設備列。3. The in-line heat treatment furnace according to claim 1, wherein 1/4 to 1/1 of the number of coils rolled in one hour at the maximum rolling capacity has a size capable of being placed in the furnace. Or a continuous production line for the wire rod according to 2.
続した非同心円リング状にして温度を低下させることな
く保定して搬送する保温カバー付き調整冷却搬送装置を
設けたことを特徴とする請求項１〜３のいずれか１項記
載の製造設備列。4. An adjusting cooling / transporting device with a heat retaining cover for keeping the wire in a continuous non-concentric ring shape and transporting it without lowering the temperature between the winding device and the convergence device. The manufacturing equipment line according to any one of claims 1 to 3, wherein
取り、保温カバー付き調整冷却搬送装置においてもＡｒ
1 変態点を下回ることなく搬送して集束装置に送ること
を特徴とする請求項４記載の製造設備列。5. The winding device winds the wire at the Ar 1 transformation point or higher, and the adjusted cooling / conveying device equipped with a heat insulating cover also has the Ar material.
5. The production equipment line according to claim 4, wherein the conveyer is conveyed without falling below one transformation point and sent to a focusing device.
で１秒間に進行する距離の１／１０以上の水冷・復熱帯
を設けたことを特徴とする請求項１〜５のいずれか１項
記載の製造設備列。6. A water-cooling / retropical zone having at least one-tenth of a distance traveled in one second at a maximum rolling speed is provided on an entrance side of a final finishing mill. 2. The manufacturing equipment line according to item 1.
コイル内径側に挿入するステムによりタイトな状態に集
束され、次のインライン熱処理炉に送られることを特徴
とする請求項１〜６のいずれか１項記載の製造設備列。7. The wire coil focused by the focusing device,
The manufacturing equipment train according to any one of claims 1 to 6, wherein the bundle is focused in a tight state by a stem inserted into a coil inner diameter side and sent to the next in-line heat treatment furnace.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14315699A JP3802707B2 (en) | 1999-05-24 | 1999-05-24 | Continuous production equipment line for wire |
| TW089109930A TW458819B (en) | 1999-05-24 | 2000-05-23 | Apparatus for continuous production of steel wire |
| PCT/JP2000/003317 WO2000071274A1 (en) | 1999-05-24 | 2000-05-24 | Continuous production facilities for wire |
| KR10-2001-7000870A KR100408489B1 (en) | 1999-05-24 | 2000-05-24 | Continuous production facilities for wire |
| CNB008009953A CN1156348C (en) | 1999-05-24 | 2000-05-24 | Continuous production facilities for wire |
| US09/744,370 US6634073B1 (en) | 1999-05-24 | 2000-05-24 | Continuous production facilities for wire |
| CA002338413A CA2338413C (en) | 1999-05-24 | 2000-05-24 | Continuous production facilities for wire |
| EP00931542A EP1125650B1 (en) | 1999-05-24 | 2000-05-24 | Continuous production facilities for wire |
| DE60035571T DE60035571T2 (en) | 1999-05-24 | 2000-05-24 | CONTINUOUS MANUFACTURING EQUIPMENT FOR WIRE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14315699A JP3802707B2 (en) | 1999-05-24 | 1999-05-24 | Continuous production equipment line for wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000326001A true JP2000326001A (en) | 2000-11-28 |
| JP3802707B2 JP3802707B2 (en) | 2006-07-26 |
Family
ID=15332233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14315699A Expired - Fee Related JP3802707B2 (en) | 1999-05-24 | 1999-05-24 | Continuous production equipment line for wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3802707B2 (en) |
Cited By (8)
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|---|---|---|---|---|
| JP2009241134A (en) * | 2008-03-31 | 2009-10-22 | Kobe Steel Ltd | Line for rolling and manufacturing steel wire rod and method of manufacturing steel wire rod |
| RU2499644C2 (en) * | 2008-07-07 | 2013-11-27 | Сименс Акциенгезелльшафт | Method of cooling hot strip to be coiled, coiled hot strip cooler, control device and metal strip |
| CN111633436A (en) * | 2020-07-08 | 2020-09-08 | 四川省富兴电力金具制造有限公司 | Automatic processing equipment and method for flat iron channel steel combination |
| CN113198836A (en) * | 2021-06-25 | 2021-08-03 | 西安盛日机电科技有限公司 | Process for rolling small-specification deformed steel bar at high speed |
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| CN114653762A (en) * | 2022-05-10 | 2022-06-24 | 新余钢铁股份有限公司 | Water-cooling and cooling-control method and system for head of high-speed wire rod |
| CN114789196A (en) * | 2022-04-29 | 2022-07-26 | 合肥东方节能科技股份有限公司 | Arrangement scheme of production process for cutting high-speed wire |
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1999
- 1999-05-24 JP JP14315699A patent/JP3802707B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009241134A (en) * | 2008-03-31 | 2009-10-22 | Kobe Steel Ltd | Line for rolling and manufacturing steel wire rod and method of manufacturing steel wire rod |
| RU2499644C2 (en) * | 2008-07-07 | 2013-11-27 | Сименс Акциенгезелльшафт | Method of cooling hot strip to be coiled, coiled hot strip cooler, control device and metal strip |
| US8635895B2 (en) | 2008-07-07 | 2014-01-28 | Siemens Aktiengesellschaft | Method for cooling a hot strip wound to a hot strip bundle, a device for cooling a hot strip, a control and/or a regulation device and metal strip |
| CN111633436A (en) * | 2020-07-08 | 2020-09-08 | 四川省富兴电力金具制造有限公司 | Automatic processing equipment and method for flat iron channel steel combination |
| CN113198836A (en) * | 2021-06-25 | 2021-08-03 | 西安盛日机电科技有限公司 | Process for rolling small-specification deformed steel bar at high speed |
| CN113680813A (en) * | 2021-08-24 | 2021-11-23 | 攀钢集团研究院有限公司 | Stelmor method based high-carbon steel long material surface oxide control method |
| CN113680813B (en) * | 2021-08-24 | 2023-04-07 | 攀钢集团研究院有限公司 | Stelmor method based high-carbon steel long material surface oxide control method |
| CN114054500A (en) * | 2021-11-11 | 2022-02-18 | 南通开发区升阳金属制品有限公司 | Preparation method of high-carbon steel high-strength filament |
| CN114054500B (en) * | 2021-11-11 | 2024-04-23 | 南通开发区升阳金属制品有限公司 | Preparation method of high-carbon steel high-strength filament |
| CN114789196A (en) * | 2022-04-29 | 2022-07-26 | 合肥东方节能科技股份有限公司 | Arrangement scheme of production process for cutting high-speed wire |
| CN114653762A (en) * | 2022-05-10 | 2022-06-24 | 新余钢铁股份有限公司 | Water-cooling and cooling-control method and system for head of high-speed wire rod |
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