JPS5856650B2 - How to roll hollow pieces - Google Patents
How to roll hollow piecesInfo
- Publication number
- JPS5856650B2 JPS5856650B2 JP10944077A JP10944077A JPS5856650B2 JP S5856650 B2 JPS5856650 B2 JP S5856650B2 JP 10944077 A JP10944077 A JP 10944077A JP 10944077 A JP10944077 A JP 10944077A JP S5856650 B2 JPS5856650 B2 JP S5856650B2
- Authority
- JP
- Japan
- Prior art keywords
- mandrel
- rolling
- hollow piece
- rolled
- 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.)
- Expired
Links
- 238000005096 rolling process Methods 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 14
- 238000005553 drilling Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
【発明の詳細な説明】
この発明はホローピースの能率的な圧延方法に係るもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an efficient rolling method for hollow pieces.
圧延手段によって継目無鋼管を製造する方法としては各
種の方式があるが、一般には穿孔圧延機、延伸圧延機及
び絞り圧延機に加熱された材料を順次に通すことによっ
て継目無鋼管が製造される。There are various methods for manufacturing seamless steel pipes using rolling means, but generally seamless steel pipes are manufactured by sequentially passing heated material through a piercing mill, an elongation mill, and a reduction mill. .
継目無鋼管の圧延においては、1ずカロ熱されたビレッ
トにその圧延方向に穿孔圧延機によって穿孔される。In the rolling of seamless steel pipes, first, the heated billet is perforated in the rolling direction by a perforation mill.
この穿孔法としてはプレスロール穿孔法やプレス穿孔法
があるがこれらの方法で穿孔された管材は同一径の中空
孔が完全に貫通穿孔されるものではなく穿孔プラグ或は
プッシャーヘッド等の穿孔設備の損傷を防止するために
素材後端に未穿孔部が残存形成され、所謂底付ホローピ
ースに成形されるか或は素材後端部の穿孔孔径を小径と
なすことが一般になされている。This drilling method includes the press roll drilling method and the press drilling method, but the pipe material drilled by these methods does not have a hollow hole of the same diameter completely penetrated, and it is necessary to use a drilling equipment such as a drilling plug or a pusher head. In order to prevent damage to the material, an unperforated portion is generally left at the rear end of the material and is formed into a so-called hollow piece with a bottom, or the diameter of the perforation at the rear end of the material is made small.
本説明においては上記した素材後端部が未穿孔部であり
又後端部が小径穿孔されている所謂底付きのホローピー
スを総称して単にホローピースと定義することにする。In this description, the so-called hollow pieces with a bottom, in which the rear end of the material is unperforated and the rear end is perforated with a small diameter, will be collectively defined as a hollow piece.
この様なホローピースを出発材として長尺の管に圧延す
る場合には、ブツシュベンチ法によらない限り両端が完
全に且つ均一に穿孔された穿孔管とするための中間処理
工程に付さなければならない。When rolling such a hollow piece into a long tube as a starting material, unless the Bush Bench method is used, it must be subjected to an intermediate treatment step to obtain a perforated tube with holes completely and uniformly perforated at both ends. .
この様な均一な貫通孔(以下定常穿孔孔と云う)をもっ
た中空管を圧延するためには、傾斜ロール圧延機が用い
られ、2本或は3本が組合せられた傾斜ロール組が形成
する空間部にマンドレルで支持した砲弾型のプラグを位
置させ、このプラグと前記傾斜ロールとにより定常穿孔
部の圧延と後端の未穿孔部或は小径穿孔孔部の圧延を行
っている。In order to roll hollow tubes with such uniform through holes (hereinafter referred to as steady perforation holes), an inclined roll mill is used, and a set of two or three inclined rolls is used. A bullet-shaped plug supported by a mandrel is placed in the space to be formed, and this plug and the inclined rolls are used to roll the regular perforation and to roll the unperforated portion or the small diameter perforation at the rear end.
か\る公知の傾斜ロール圧延にお・いては管の全長を長
さの短かい砲弾型のプラグのみで圧延するために、プラ
グが赤熱される。In such known inclined roll rolling, the entire length of the tube is rolled with only a short bullet-shaped plug, so that the plug is red-hot.
このために管を一本圧延する毎にプラグを取り替えるか
或はプラグを冷却する必要がある。For this reason, it is necessary to replace the plug or cool the plug every time one tube is rolled.
この様なプラグの冷却或は取り替えには時間を要し、生
産性の低下は避けられない。Cooling or replacing such plugs takes time and inevitably reduces productivity.
又定常穿孔材のマンドレル圧延機による延伸圧延におい
ては、管材の穿孔孔に長尺のマンドレルを挿通し、これ
を直列に配置した溝付ロールからなる圧延機列に通して
所定肉厚の管圧延を行うことは例えば特公昭42−24
987号公報等に発表されている。In addition, in elongation rolling of a constantly perforated material using a mandrel rolling machine, a long mandrel is inserted into the perforated hole of the pipe material, and the mandrel is passed through a row of rolling mills consisting of grooved rolls arranged in series to roll the pipe to a predetermined thickness. For example, it is possible to
This was announced in Publication No. 987, etc.
しかし上記の如き公知のマンドレル圧延においては、被
圧延材は両端が定常な穿孔孔で貫通開口されたものであ
って、被圧延材の全長に亘って定常穿孔孔を設けるため
の予備処理工程を必要とする。However, in the above-mentioned known mandrel rolling, the material to be rolled has regular perforations at both ends, and a preliminary treatment step is required to provide regular perforations over the entire length of the material to be rolled. I need.
本発明は傾斜ロール圧延機でのホローピースの圧延にお
いて上記の如き欠点のない極めて簡単な工程の管圧延方
法を提供することを目的になされたものであって、プラ
グとマンドレルとを同径一体となしく以下単にマンドレ
ルと云う)このマンドレルをホローピース中空部に充分
に挿入し、管材トマンドレルを一体的に移行させながら
定常穿孔部の圧延を行い、更に後端末穿孔部又は小径穿
孔部はマンドレルの先端に設けられている先細り部で穿
孔及び圧延を行うことを特徴とする。The present invention has been made for the purpose of providing a tube rolling method with an extremely simple process that does not have the above-mentioned drawbacks in rolling hollow pieces using an inclined roll rolling mill, and in which a plug and a mandrel are integrally formed with the same diameter. This mandrel (hereinafter simply referred to as the mandrel) is fully inserted into the hollow part of the hollow piece, and the constant perforation part is rolled while the pipe mandrel is integrally transferred, and the rear end perforation part or small diameter perforation part is rolled at the tip of the mandrel. It is characterized in that drilling and rolling are performed at the tapered part provided in the.
以下更に本発明の詳細について図面を参照しながら述べ
る。The details of the present invention will be further described below with reference to the drawings.
図は本発明の圧延方法を数個の過程に分解して路線図的
に示したものであるが、本発明方法を実施するための装
置について述べる。The figure shows the rolling method of the present invention broken down into several steps, and the apparatus for carrying out the method of the present invention will be described.
図において3−1.3−2は圧延機・・シリング(図示
せず)の中に対向配置された傾斜ロールであって、本発
明において特に限定されるものではなく管圧延にかいて
一般に使用される傾斜ロール圧延機を本発明の目的を逸
脱しない範囲にむいて任意に選ぶことができる。In the figure, 3-1 and 3-2 are inclined rolls disposed opposite to each other in a rolling mill (not shown), which are not particularly limited in the present invention and are generally used in pipe rolling. The inclined roll rolling mill used can be arbitrarily selected without departing from the object of the present invention.
2は被圧延材即ちホローピース1の圧延機への挿入側に
むいてその後面に設けられているホローピース1を傾斜
ロール3−L 3−2方向に押し進めるためのプッシャ
ーである。Reference numeral 2 denotes a pusher for pushing the material to be rolled, that is, the hollow piece 1, which is provided on the rear surface facing the insertion side into the rolling machine, in the direction of the inclined rolls 3-L and 3-2.
4は先端に先細り部4を一体的に形成させたマンドレル
であってホローピース1の長さ以上の長さに設けられる
。Reference numeral 4 denotes a mandrel having a tapered portion 4 integrally formed at its tip, and is provided to have a length equal to or longer than the length of the hollow piece 1.
又マンドレル4はホローピース1の圧延軸IK一致して
設けられる。Further, the mandrel 4 is provided to coincide with the rolling axis IK of the hollow piece 1.
5−L 5−2.5−3.5−4は夫々傾斜圧延ロール
3−L 3−2後面において圧延材移行線を挾んで対峙
し、且つ圧延材移行線方向への進退装置(図示せず)例
えばシリンダー装置或はリンク装置に連結されたフィー
ドロールである。5-L 5-2.5-3.5-4 face each other across the rolled material transition line on the rear surface of the inclined rolling roll 3-L 3-2, and have an advancing/retreating device (not shown) in the direction of the rolled material transition line. 1) For example, a feed roll connected to a cylinder device or a link device.
このフィードロール5−iは更に選択的に適当な駆動源
に連結される。This feed roll 5-i is further selectively connected to a suitable drive source.
6はマンドレル4のストッパーであってマンドレル4の
長さに対応してマンドレル4の先端の先細り部4が傾斜
ロール3−1゜3−2の間に位置するようにマンドレル
4の移行線を横切って進退自在に設けられる。Reference numeral 6 denotes a stopper for the mandrel 4, which crosses the transition line of the mandrel 4 so that the tapered part 4 at the tip of the mandrel 4 is located between the inclined rolls 3-1 and 3-2, corresponding to the length of the mandrel 4. It is installed so that it can move forward and backward.
ストッパー6のマンドレル移行線への進退は本発明の目
的を逸脱しない範囲で本図示例の如き一端を回転自在に
支持した転回開閉機構であってもよいし、又シリング−
装置による進退機構であってもよ〈任意に選択設置する
ことができる。The stopper 6 may be moved forward and backward toward the mandrel transition line by a rotating opening/closing mechanism in which one end is rotatably supported as shown in the illustrated example, or by a sling-opening mechanism without departing from the object of the present invention.
It may be a forward/retreat mechanism using a device (it can be selected and installed as desired).
7はストッパー6のラッチであってストッパー6の閉塞
支持を行う。Reference numeral 7 denotes a latch for the stopper 6, which supports the stopper 6 in closing.
以上の如き装置配列によって本発明方法は次のように実
施される。The method of the present invention is carried out as follows using the apparatus arrangement as described above.
第1図に示すように管に圧延すべく適当に精整処理され
た角、或は丸等の断面のビレットを適当な穿孔機により
後端部に未穿孔部を残すか、或は小径穿孔部を形成させ
たホローピースを穿孔開口側をマンドレル先細り部4に
対向して傾斜ロール圧延機の人口側に持ち来し位置せし
める。As shown in Figure 1, a billet with a square or round cross section that has been appropriately refined to be rolled into a pipe is left unperforated at the rear end using an appropriate punching machine, or a small diameter hole is punched. The hollow piece in which the part has been formed is brought to the artificial side of the inclined roll rolling mill and positioned with the perforation opening side facing the mandrel tapered part 4.
ついでプッシャー2でホローピース1の後面を押して圧
延機ロール部へ移行せしめる。Then, the pusher 2 pushes the rear surface of the hollow piece 1 to move it to the rolling mill roll section.
又ホローピース1の敗方側においてはフィードロール5
− iによりマンドレル4を挾持せしめると共にフィー
ドロー/l−5−i全作動させてマンドレル4をホロー
ピース1に移行せしめその穿孔腔8内へ挿入する。Also, on the losing side of hollow piece 1, feed roll 5
- The mandrel 4 is clamped by i and the feedrow/l-5-i is fully operated to transfer the mandrel 4 to the hollow piece 1 and insert it into the perforation cavity 8 thereof.
マンドレル4のホローピース1の穿孔腔8内への挿入は
圧延前に充分挿入し終えておいてもよく又圧延中挿入を
継続してもよい。The mandrel 4 may be fully inserted into the perforation cavity 8 of the hollow piece 1 before rolling, or may be continued during rolling.
しかしホローピース1の未穿孔部1が傾斜ロール3−L
3−2の圧延部に到達するまでにはマンドレル4の先
細り部4が穿孔腔8の先端部1で充分到達し終えねばな
らない。However, the unperforated part 1 of the hollow piece 1 is the inclined roll 3-L.
The tapered part 4 of the mandrel 4 must fully reach the tip 1 of the perforation cavity 8 before reaching the rolling part 3-2.
第2図はマンドレル4とイ頃斜ロール3−1.3−2に
よりホローピース1の穿孔部管壁が圧延される状態を示
すものであるが、この図示例ではマンドレル4の先端は
未だ穿孔腔8の先端部1で挿入し終えていないが、マン
ドレル4とホローピース1とは一体的に圧延方向に移動
し管壁は所定の肉厚に圧延される。FIG. 2 shows the state in which the pipe wall of the perforation part of the hollow piece 1 is rolled by the mandrel 4 and the diagonal rolls 3-1 and 3-2, but in this illustrated example, the tip of the mandrel 4 is still in the perforation cavity. Although the insertion is not completed at the tip 1 of the tube 8, the mandrel 4 and the hollow piece 1 move together in the rolling direction, and the tube wall is rolled to a predetermined thickness.
このときフィードロール5−iは既に退避している。At this time, the feed roll 5-i has already been retracted.
圧延の進行と共にマンドレル4はストッパー6によりそ
の移行を止められる。As the rolling progresses, the mandrel 4 is stopped from moving by a stopper 6.
この状態は第3図に示される。マンドレル4がストッパ
ー6によりその移行を止められた後もホローピースは前
進し、ホローピース1の未穿孔始端部は傾斜ロール3−
L 3−2間に到達し、この状態に釦げる圧延は傾斜ロ
ール穿孔機において穿孔圧延するのと同じであり、未穿
孔部1は傾斜ロール3−L 3−2とマンドレルの先細
す部4及びそれに隣接するマンドレル本体部によって曲
の部分と同一寸法に穿孔圧延される。This situation is shown in FIG. Even after the mandrel 4 is stopped from moving by the stopper 6, the hollow piece moves forward, and the unpierced starting end of the hollow piece 1 is moved by the inclined roll 3-
The rolling process that reaches between L3-2 and presses the button is the same as perforation rolling with an inclined roll perforator, and the unperforated part 1 is formed between the inclined roll 3-L3-2 and the tapered part of the mandrel. 4 and the mandrel body adjacent thereto are punch-rolled to the same dimensions as the curved section.
本発明は上記した如く予めホローピース1の穿孔部に先
細り部を先端に有するマンドレルを挿入し、マンドレル
とホローピースを一体的に移動させながら穿孔部壁の圧
延を行い、更に未穿孔部においてはマンドレルの移行を
停止して先細り部と傾斜ロールとでその部分をも前記穿
孔部と同様に圧延するものである。As described above, in the present invention, a mandrel having a tapered part at the tip is inserted into the perforated part of the hollow piece 1 in advance, and the wall of the perforated part is rolled while the mandrel and the hollow piece are moved together. The transfer is stopped and that part is rolled using the tapered part and the inclined roll in the same manner as the perforated part.
ホローピース1の圧延終了後は第4図に示す如くストッ
パー6及びラッチ7を開放してフィードロール5− i
を作動して圧延管は次工程へ送り出すと共にマンドレル
4は逆方向即ち次の圧延のために待機しているホローピ
ース9の方向にフィードロールを用いて移動させ前記第
1図に示したと同様の過程を繰り返し圧延を行う。After rolling the hollow piece 1, the stopper 6 and latch 7 are opened as shown in FIG. 4, and the feed roll 5-i
is activated to send the rolled tube to the next process, and at the same time, the mandrel 4 is moved in the opposite direction, that is, in the direction of the hollow piece 9 waiting for the next rolling, using feed rolls, and the same process as shown in FIG. 1 is carried out. Rolling is performed repeatedly.
又本発明にむいてはマンドレル4をその中心軸の回りに
強制回転させながら圧延を行うことも出来る。Further, according to the present invention, rolling can be performed while forcing the mandrel 4 to rotate around its central axis.
本発明の圧延方法は上記の如くであるので、マンドレル
がその全体に亘って使用され各部への負荷実動時間は極
めて短時間であり、マンドレルの部分的な集中損耗がな
く長時間の繰り返し使用を行うことができる。Since the rolling method of the present invention is as described above, the mandrel is used over its entirety, and the actual load application time to each part is extremely short, and there is no localized wear and tear on the mandrel, and it can be used repeatedly for a long time. It can be performed.
又従来は圧延後プラグを取り外した後マンドレルと管を
同時に圧延方向に進めて管をストリッパーブロックに当
てマンドレルを抜き取り管を払出し再びマンドレルを前
進させプラグを取り付はマンドレルを定位置に固定した
後始めて圧延を開始することができるが、本発明では圧
延設管を次工程方向へ払出ししている間にマンドレルは
圧延ラインを逆送すればよく、全くの時間ロスがない。Conventionally, after removing the plug after rolling, the mandrel and tube are advanced simultaneously in the rolling direction, the tube is placed against a stripper block, the mandrel is pulled out, the tube is removed, the mandrel is advanced again, and the plug is attached after the mandrel is fixed in position. However, in the present invention, the mandrel only needs to be sent back through the rolling line while the rolled pipe is being delivered to the next process, and there is no time loss at all.
更に本発明の方法では傾斜ロールの被圧延材の噛込み不
良が減少出来ると共に噛込みの瞬間にフィードロール5
− iによってマンドレルを圧延方向に引張ることによ
って噛み込みを容易にし、噛込み速度を大きくすること
ができる。Furthermore, in the method of the present invention, it is possible to reduce the occurrence of poor biting of the material to be rolled by the inclined rolls, and at the same time, the feed roll 5 can be
- By pulling the mandrel in the rolling direction by i, biting can be facilitated and the biting speed can be increased.
この外車発明にむいては圧延速度の向上、長尺圧延を可
能にすることができる。This foreign car invention can improve the rolling speed and enable long length rolling.
第1図〜第4図は本発明の圧延方法を過程に分割して示
したもので第1図は圧延前、第2図は穿孔部のマンドレ
ル圧延、第3図は未穿孔部の圧延状態を示し、第4図は
圧延終了後のマンドレルの動きを示す。Figures 1 to 4 show the rolling method of the present invention divided into processes. Figure 1 is before rolling, Figure 2 is mandrel rolling of the perforated area, and Figure 3 is the rolling state of the unperforated area. Figure 4 shows the movement of the mandrel after rolling.
Claims (1)
際して、ホローピースの穿孔部に先端が先細り状のマン
ドレスを挿入しホローピースをマンドレルと圧延ロール
間に一体的に移動させ、ホローピースの既穿孔部をマン
ドレルと圧延ロールにより圧延し、ついでマンドレルの
みをストッパーにより移行を停止させホローピースの後
端末穿孔部を前記マンドレルの先細り頭部と傾斜圧延ロ
ールとにより圧延することを特徴とするホローピースの
圧延方法。 2 傾斜ロール圧延機でホローピースを製管圧延するに
際して、ホローピースの穿孔部に先端が先細り状のマン
ドレルを挿入しホロピースをマンドレルと圧延ロール間
に一体的に移動させ、ホローピースの既穿孔部をマンド
レルと圧延ロールにより圧延し、ついでマンドレルのみ
をストッパーにより移行を停止させホローピースの後端
末穿孔部を前記マンドレルの先細り頭部と傾斜圧延ロー
ルとにより圧延し、その後練マンドレルを圧延管と逆方
向に抜き取り移行させることを特徴とするホローピース
の圧延方法。[Claims] 1. When a hollow piece is rolled into a pipe using an inclined roll rolling mill, a mandress with a tapered tip is inserted into the perforation of the hollow piece, the hollow piece is integrally moved between the mandrel and the rolling roll, and the hollow piece is rolled. The perforated part of the hollow piece is rolled by a mandrel and a rolling roll, the transition of only the mandrel is stopped by a stopper, and the perforated part at the rear end of the hollow piece is rolled by the tapered head of the mandrel and an inclined rolling roll. rolling method. 2. When a hollow piece is rolled into a pipe with an inclined roll rolling mill, a mandrel with a tapered tip is inserted into the perforated part of the hollow piece, the hollow piece is integrally moved between the mandrel and the rolling roll, and the perforated part of the hollow piece is connected to the mandrel. Rolling is performed using a rolling roll, and then only the mandrel is stopped from moving with a stopper, and the rear end perforated portion of the hollow piece is rolled by the tapered head of the mandrel and an inclined rolling roll, and then the kneading mandrel is pulled out in the opposite direction to the rolling pipe and transferred. A method for rolling a hollow piece, characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10944077A JPS5856650B2 (en) | 1977-09-13 | 1977-09-13 | How to roll hollow pieces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10944077A JPS5856650B2 (en) | 1977-09-13 | 1977-09-13 | How to roll hollow pieces |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5443164A JPS5443164A (en) | 1979-04-05 |
JPS5856650B2 true JPS5856650B2 (en) | 1983-12-16 |
Family
ID=14510289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10944077A Expired JPS5856650B2 (en) | 1977-09-13 | 1977-09-13 | How to roll hollow pieces |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5856650B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5914745U (en) * | 1982-07-22 | 1984-01-28 | 株式会社協豊製作所 | car console box |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573568A (en) * | 1980-06-06 | 1982-01-09 | Fujitsu Ltd | Linear induction motor |
DE3432288C2 (en) * | 1984-09-01 | 1987-01-02 | Kocks Technik Gmbh & Co, 4010 Hilden | Use of inert gas in the manufacture of seamless pipes |
-
1977
- 1977-09-13 JP JP10944077A patent/JPS5856650B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5914745U (en) * | 1982-07-22 | 1984-01-28 | 株式会社協豊製作所 | car console box |
Also Published As
Publication number | Publication date |
---|---|
JPS5443164A (en) | 1979-04-05 |
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