JPS61279328A - Method and device for upset working of pipe - Google Patents
Method and device for upset working of pipeInfo
- Publication number
- JPS61279328A JPS61279328A JP12054385A JP12054385A JPS61279328A JP S61279328 A JPS61279328 A JP S61279328A JP 12054385 A JP12054385 A JP 12054385A JP 12054385 A JP12054385 A JP 12054385A JP S61279328 A JPS61279328 A JP S61279328A
- Authority
- JP
- Japan
- Prior art keywords
- tube end
- tube
- thick
- section
- pipe
- 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.)
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Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、管のアプセット２加工方法および装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for machining an upset 2 of a pipe.
［従来の技術］
油井管等の長尺状鋼管の接続方法として、鋼管の端部に
形成したねじ部に継手を介装することにより、鋼管を順
次接続する方法が用いられている。この接続方法が適用
される鋼管にあっては、その管端に形成されるねじ部の
強度を確保するため、特開昭５９−７８８３８号公報に
示されるような方法で、管端部分をアプセット加工によ
って厚肉成形している。[Prior Art] As a method for connecting long steel pipes such as oil country tubular goods, a method is used in which the steel pipes are successively connected by interposing a joint in a threaded portion formed at the end of the steel pipe. For steel pipes to which this connection method is applied, in order to ensure the strength of the threaded portion formed at the pipe end, the pipe end portion is upset by the method shown in Japanese Patent Application Laid-Open No. 78838/1983. It is formed into a thick wall by processing.
すなわち、第３図（Ａ）は一般的なアプセット加工方法
における据込み開始前の状態を示す縦割断面図、第３図
（Ｂ）は同アプセット加工方法における据込み完了時の
状態を示す縦割断面図である。誘導加熱方式等によって
高温に局部加熱された管体１の端部ＩＡは、その外径よ
り大なる割ダイス２の内径部２Ａにセットされるととも
に、その内径と略同−の外径を有し、割ダイス２の内部
に常時一定ストロークで進入するフランジ付きポンチ３
の据込み部３Ａによって据込まれ、管端厚肉部４を形成
可能とされている。In other words, FIG. 3(A) is a longitudinal cross-sectional view showing the state before the start of upsetting in a general upsetting method, and FIG. 3(B) is a vertical cross-sectional view showing the state at the completion of upsetting in the same upsetting method. FIG. The end portion IA of the tube body 1, which is locally heated to a high temperature by an induction heating method or the like, is set in the inner diameter portion 2A of the split die 2, which is larger than its outer diameter, and has an outer diameter that is approximately the same as the inner diameter. A flanged punch 3 always enters the split die 2 with a constant stroke.
The tube end thick-walled portion 4 can be formed by the upsetting section 3A.
ところで、上記アプセット加工を施された管端には、割
ダイス２のテーパー状ショルダ一部２Ｂの存在により、
管端厚肉部の外面と管定常部の外面に挟まれる外面テー
パー部が形成される。この外面テーパー部は、管端厚肉
部と管定常部の境界部分における疲労破壊を防止するた
めに重要な存在であり、管体１がドリルパイプのような
過酷な条件で使用される場合には、上記外面テーパー部
をゆるやかにかつ長く設定することが望まれる。By the way, due to the existence of the tapered shoulder portion 2B of the split die 2 at the tube end subjected to the above-mentioned upset processing,
An outer surface tapered portion is formed between the outer surface of the tube end thick wall portion and the outer surface of the tube steady portion. This external tapered part is important for preventing fatigue failure at the boundary between the thick-walled part of the pipe end and the steady part of the pipe, and when the pipe body 1 is used under harsh conditions such as a drill pipe. It is desirable that the outer surface taper portion be set gently and long.
［発明が解決しようとする問題点］
上記従来のアプセット加工方法にあっては、管体１の端
部ＩＡを圧縮して管端厚肉部４、外面テーパー部５を形
成する時、管体材料が割ダイス２のショルダ一部２Ｂに
強く押圧される。そこで、割ダイス２のショルダ一部２
Ｂに、材料との摩擦接触等によるダイス荒れを生じ、ダ
イス寿命が制限されている。また、管体ｌの外面テーパ
ー部５に外面ばりを生じやすく、グラインダー等を使用
したぼり除去のための手入れ作業が必要となっている。[Problems to be Solved by the Invention] In the conventional upsetting method described above, when compressing the end IA of the tube body 1 to form the tube end thick wall portion 4 and the external tapered portion 5, the tube body The material is strongly pressed against the shoulder portion 2B of the split die 2. Therefore, the shoulder part 2 of the split dice 2
B) Dice roughness occurs due to frictional contact with the material, and the life of the die is limited. In addition, external burrs are likely to occur on the external tapered portion 5 of the tubular body 1, and maintenance work to remove the burrs using a grinder or the like is required.
また、従来のアプセット加工方法にあっては、アプセッ
ト加工によって得られる外面テーパー部５の形状が割ダ
イス２のショルダ一部２Ｂの形状フ：よって定まり、異
なる形状のショルダ一部２Ｂを備える割ダイス２を用意
しない限り、管体ｌの用途等に応じて外面テーパー部５
の勾配、長さを自由に設定することができない。In addition, in the conventional upset processing method, the shape of the outer surface tapered portion 5 obtained by the upset processing is determined by the shape of the shoulder portion 2B of the split die 2, and the split die with the shoulder portion 2B of a different shape is determined. Unless 2 is prepared, the outer surface tapered part 5 may be
The slope and length cannot be set freely.
本発明は、管端厚肉部の外面と管定常部の外面に挟まれ
る外面テーパー部を、ダイス形状によることなく、外面
ばりのない所望の形状に設定可能とすることを目的とす
る。SUMMARY OF THE INVENTION An object of the present invention is to make it possible to set the external tapered part sandwiched between the external surface of the thick-walled part of the tube end and the external surface of the constant tube part into a desired shape without external burrs, without depending on the die shape.
［問題点を解決するための手段１
本発明の第１は、管端部分を加熱し、加熱された管端部
分の外径が拡径するように管端部分を圧縮して厚肉成形
する管のアプセット加工方法において、管端厚肉部の外
面と管定常部の外面に挟まれて外面テーパー部を形成す
ることとなる管端中間部の加熱温度分布を、管端厚肉部
の側から管定常部の側に向けて次第に低減させた状態下
で、管端厚肉部の目標外径と同等寸法の真直状内径部を
備えてなるダイス内に、上記のように加熱された管端部
分をセットし、上記管端部分の内面にフランジ付きポン
チの心金部を挿入し、上記ダイスとポンチによって管端
部分を厚肉成形するように−したものである。[Means for solving the problem 1] The first aspect of the present invention is to heat the tube end portion and compress the tube end portion to form a thick wall so that the outer diameter of the heated tube end portion increases. In the pipe upset processing method, the heating temperature distribution at the middle part of the pipe end, which is sandwiched between the outer surface of the thick-walled part of the pipe end and the outer surface of the steady part of the pipe to form the external tapered part, is determined by The heated tube as described above is placed in a die having a straight inner diameter part with the same dimensions as the target outer diameter of the thick walled part of the tube end, with the diameter gradually decreasing from The end portion is set, the mandrel of the flanged punch is inserted into the inner surface of the tube end portion, and the tube end portion is thick-walled using the die and punch.
本発明の第２は、管端部分を加熱する加熱装置を有し、
加熱された管端部分の外径が拡径するように管端部分を
圧縮して厚肉成形する管のアプセット加工装置において
、管端厚肉部の外面と管定常部の外面に挟まれて外面テ
ーパー部を形成することとなる管端中間部の長手方向の
加熱温度分布を測定する温度測定装置と、加熱された上
記管端中間部を冷却可能とするとともに、その冷却能を
該管端中間部の長手方向に沿って可変とする冷却装置と
、温度測定装置の測定結果に基づいて、冷却装置を作動
制御し、上記管端中間部の加熱温度分布を、管端厚肉部
の側から管定常部の側に向けて次第に低減させる制御器
と、管端厚肉部の目標外径と同等寸法の真直状内径部を
備え、加熱された管端部分がセットされるダイスと、上
記管端部分の内面に挿入可能とされる心金部を備え、管
端を圧縮して厚肉成形するフランジ付きポンチとを備え
てなるようにしたものである。The second aspect of the present invention includes a heating device that heats the tube end portion,
In a tube upset processing device that compresses and forms a thick tube end portion so that the outside diameter of the heated tube end portion expands, the pipe is sandwiched between the outer surface of the thick walled portion of the tube end and the outer surface of the steady portion of the tube. A temperature measurement device that measures the heating temperature distribution in the longitudinal direction of the intermediate portion of the tube end that will form the external tapered portion; Based on the measurement results of a cooling device that is variable along the longitudinal direction of the intermediate portion and a temperature measuring device, the operation of the cooling device is controlled, and the heating temperature distribution of the intermediate portion of the tube end is adjusted to the side of the thick walled portion of the tube end. a controller that gradually decreases the amount from the tube end toward the steady section; a die having a straight inner diameter portion having a dimension equivalent to the target outer diameter of the thick walled portion of the tube end, and into which the heated tube end portion is set; It is equipped with a mandrel part that can be inserted into the inner surface of the tube end portion, and a flanged punch for compressing the tube end to form a thick wall.
［作 用］
本発明に係る管のアプセット加工方法および装置によれ
ば、管端部分の長手方向において、外面テーパー部を形
成することとなる管端中間部の加熱温度分布の選択によ
り、アプセット加工によって得られる外面テーパー部の
勾配、長さを、ダイスのショルダ一部による成形作用を
受けることなく自由に設定することが可能となる。[Function] According to the method and apparatus for upsetting a pipe according to the present invention, upsetting can be performed by selecting the heating temperature distribution at the intermediate portion of the tube end that forms the outer surface tapered portion in the longitudinal direction of the tube end portion. It becomes possible to freely set the slope and length of the outer surface tapered portion obtained by this method without being affected by the shaping action by a part of the shoulder of the die.
なお、上記外面テーパー部は、ダイスのショルダ一部の
成形作用を受けないので、外面ばりを伴なうこともない
。In addition, since the outer surface tapered portion is not subjected to the forming action of a part of the shoulder of the die, no outer surface burr is generated.
［実施例］
第１図は本発明によるアプセット加工状態を示す制御系
統図、第２図はアプセット加工装置の全体構成を示す正
面図である。[Example] FIG. 1 is a control system diagram showing an upset processing state according to the present invention, and FIG. 2 is a front view showing the overall configuration of an upsetting device.
アプセット加工されるべき鋼管ｌＯは、第２図に示すよ
うに加熱装置（バーナ式または高周波誘導式加熱炉）１
１においてその管端部分を加熱される。The steel pipe lO to be upset processed is heated by a heating device (burner type or high frequency induction heating furnace) 1 as shown in Fig. 2.
1, the tube end portion is heated.
加熱された鋼管１０は、スキッドレール１２を経てアプ
セット加工位置に達し、ダイス１３、フランジ付きポン
チ１４によってアプセット加工を施される。The heated steel pipe 10 passes through a skid rail 12 and reaches an upset processing position, where it is subjected to an upset processing using a die 13 and a flanged punch 14.
ダイス１３は、アプセット加工によって得られる管端厚
肉部１５の目標外径と同等寸法の真直状内径部１６を備
え、加熱された管端部分をセット可能としている。セッ
トされた管端部分は、不図示の挟持装置によって挟持可
能とされる。フランジ付きポンチ１４は、上記管端部分
の内面に挿入可能とされる心金部１７を備えている。ダ
イス１３とポンチ１４は、第１図に示すように、鋼管！
０の２点鎖線で示す管端部分を圧縮して厚肉成形する。The die 13 has a straight inner diameter portion 16 having a size equivalent to the target outer diameter of the thick walled portion 15 of the tube end obtained by upset processing, and allows the heated tube end portion to be set therein. The set tube end portion can be held by a holding device (not shown). The flanged punch 14 includes a mandrel portion 17 that can be inserted into the inner surface of the tube end portion. The die 13 and punch 14 are made of steel pipes, as shown in Fig. 1!
The tube end portion shown by the two-dot chain line at 0 is compressed to form a thick wall.
これにより、鋼管１０は、管端厚肉部１５を形成される
とともに、後述するメカニズムにより、管端厚肉部１５
の外面と管定常部１８の外面に挟まれる部分に外面テー
パー部１９を形成されることとなる。As a result, the steel pipe 10 is formed with a tube end thick wall portion 15, and a mechanism described later causes the tube end thick wall portion 15 to be formed.
An outer surface tapered portion 19 is formed at a portion sandwiched between the outer surface of the tube and the outer surface of the tube stationary portion 18.
しかして、上記鋼管１０にあっては、外面テーパー部１
９の形状を以下のようにして形成可能とする。Therefore, in the steel pipe 10, the outer surface tapered portion 1
9 can be formed as follows.
まず、上記鋼管ｌＯは、前記加熱装Ｍｌｌによる加熱過
程で、第１図に示すような均熱領域Ｚ１と温度制御領域
Ｚ２の青領域を加熱される。均熱領域Ｚｌは、予め、鋼
管ｌＯの端面から、外面アプセット長Ｌｌ（管端厚肉部
１５の外面長さ）に対応することとなるように予測され
た長さに設定され、第１図に実線Ａ−Ｂで示すような所
定の一定温度に加熱される。温度制御領域Ｚ２は、予め
、上記均熱領域Ｚ１の終点から外面テーパー長Ｌ２（外
面テーパー部１９の長さ）に対応することとなるように
予測された管端中間部２０の長さに設定され、第１図に
破線Ｂ−Ｃで示すような温度分布に加熱される。First, the steel pipe IO is heated in the blue region of the soaking region Z1 and the temperature control region Z2 as shown in FIG. 1 in the heating process by the heating device Mll. The soaking area Zl is set in advance to a length predicted from the end surface of the steel pipe IO so that it corresponds to the outer surface upset length Ll (the outer surface length of the tube end thick walled part 15), and is shown in FIG. is heated to a predetermined constant temperature as shown by the solid line A-B. The temperature control region Z2 is set in advance to the length of the tube end intermediate portion 20 predicted to correspond to the outer surface taper length L2 (the length of the outer surface taper portion 19) from the end point of the temperature soaking region Z1. and is heated to a temperature distribution as shown by the broken line B-C in FIG.
次に、上記鋼管１０は、第１図に示す温度測定装置２１
により、上記管端中間部２０、すなわち温度制御領域の
長手方向の加熱温度分布を測定される。温度測定装置２
１は、管端中間部２０の長手方向に沿って配置された複
数（５個）の非接触式温度計２１Ａ〜２１Ｅによって構
成され、各温度計２１Ａ〜２１Ｈの測定結果を制御器２
２に伝達可゛能としている。Next, the steel pipe 10 is heated to a temperature measuring device 21 shown in FIG.
As a result, the heating temperature distribution in the longitudinal direction of the tube end intermediate portion 20, that is, the temperature control region, is measured. Temperature measuring device 2
1 is composed of a plurality (5) of non-contact thermometers 21A to 21E arranged along the longitudinal direction of the tube end intermediate portion 20, and the measurement results of each thermometer 21A to 21H are sent to a controller 2.
2.
他方、スキッドレール１２上に位置する鋼管１０の上方
には、冷却装置２３が設置されている。冷却装置２３は
、管端中間部２０の長手方向に沿う上記温度計２１Ａ〜
２１Ｅの測定部位に対応して配置される複数（５個）の
冷却ノズル２３Ａ〜２３Ｅを有している。各冷却ノズル
２３Ａ〜２３Ｅは、それぞれ上記制御器２２によって作
動制御される水量調節弁２４Ａ〜２４Ｅを介して、冷却
水供給配管２５に接続されている。すなわち、冷却装置
２３は、各冷却ノズル２３Ａ〜２３Ｅからの噴出水量を
調節する状態下で、その冷却能を管端中間部２ｏの長手
方向に沿って可変としている。On the other hand, above the steel pipe 10 located on the skid rail 12, a cooling device 23 is installed. The cooling device 23 includes the thermometers 21A to 21A along the longitudinal direction of the tube end intermediate portion 20.
It has a plurality of (5) cooling nozzles 23A to 23E arranged corresponding to the measurement site 21E. Each of the cooling nozzles 23A to 23E is connected to a cooling water supply pipe 25 via a water flow control valve 24A to 24E, each of which is controlled by the controller 22. In other words, the cooling device 23 has its cooling capacity variable along the longitudinal direction of the tube end intermediate portion 2o while adjusting the amount of water ejected from each of the cooling nozzles 23A to 23E.
ここで、前記制御器２２は、アプセット加工後における
管端中間部２０の内面に所望形状の外面テーパー部１９
を形成可能とするために、アプセット加工前の管端中間
部２０すなわち前記温度制御領域に設定すべき最適温度
分布を、第１図に実線Ｂ−Ｄで示すような、管端厚肉部
１５の側から管定常部１８の側に向けて次第に低減する
状態に、予め、図式、関数式で記憶、している、すなわ
ち、管端中間部２０の材料変形抵抗は、その温度分布に
応じて順次異なるものとなり、アプセット加工時の変形
量も順次変化することとなる。したがって、この温度勾
配を適当に選択することにより、所望の勾配、長さの外
面テーパー部１９を得ることが可能となる。Here, the controller 22 controls an outer surface tapered portion 19 having a desired shape on the inner surface of the tube end intermediate portion 20 after the upset processing.
In order to make it possible to form the tube end thick-walled portion 15 as shown by the solid line B-D in FIG. The material deformation resistance of the tube end intermediate portion 20 is stored in advance in a diagram or a functional formula in a state in which it gradually decreases from the side of the tube toward the tube steady portion 18 side. They will be different sequentially, and the amount of deformation during upsetting will also change sequentially. Therefore, by appropriately selecting this temperature gradient, it is possible to obtain the outer surface tapered portion 19 with a desired gradient and length.
そこで、制御器２２は、上記温度制御領域に定められて
いる最適温度分布と、温度測定装置２１が測定した実温
度分布とを比較し、その実温度分布を最適温度分布に変
更可能とするに必要な冷却装置ｚ３の冷却曲線（第１図
に１点鎖線で示す）を演算する。制御器２２は、この演
算結果に基づいて、冷却装置２３の各水量調節弁２４Ａ
〜２４Ｅを作動制御する。Therefore, the controller 22 compares the optimum temperature distribution defined in the temperature control area with the actual temperature distribution measured by the temperature measuring device 21, and is necessary to change the actual temperature distribution to the optimum temperature distribution. A cooling curve (indicated by a one-dot chain line in FIG. 1) of the cooling device z3 is calculated. Based on this calculation result, the controller 22 controls each water flow control valve 24A of the cooling device 23.
~24E is operated and controlled.
すなわち、上記実施例によれば、管端部分の長手方向に
おいて、外面テーパー部１９を形成することとなる管端
中間部２０の加熱温度分布の選択により、アプセット加
工によって得られる外面テーパー部１９の勾配、長さを
、ダイス１３のショルダ一部による成形作用を受けるこ
となく自由に設定することが可能となる。That is, according to the embodiment described above, by selecting the heating temperature distribution of the tube end intermediate portion 20 that forms the outer surface taper portion 19 in the longitudinal direction of the tube end portion, the outer surface tapered portion 19 obtained by upsetting is reduced. It becomes possible to freely set the slope and length without being affected by the shaping action of a part of the shoulder of the die 13.
また、上記外面テーパー部１９は、ダイス１３のショル
ダ一部の成形作用を受けないので、外面ばりを伴なうこ
とがなく、手入れ作業が不用となる。Further, since the outer surface tapered portion 19 is not subjected to the forming action of a part of the shoulder of the die 13, the outer surface is not burred, and no maintenance work is required.
また、ダイス１３は、外面テーパー部１９を形成するた
めのショルダ一部を備える必要がなく、したがって、ダ
イス荒れの発生がなく、ダイス寿命を向上することが可
能となる。なお、ダイス１３は、長手方向の全長に真直
状内径部１６を設けているので、ポンチ１４に対して左
右両端を反転することにより、その反転される両端を管
端厚肉部１５の成形のために交互に使用可能である。Further, the die 13 does not need to include a shoulder portion for forming the outer surface tapered portion 19, and therefore, die roughness does not occur, and the life of the die can be improved. Note that the die 13 has a straight inner diameter portion 16 along its entire longitudinal length, so by reversing both left and right ends with respect to the punch 14, the reversed ends can be used for forming the tube end thick wall portion 15. Can be used alternately.
また、本発明は、管端部分の外面を拡径するとともに、
その内面を縮径して、管端部分を内外に厚肉化するアプ
セット加工にも適用可能である。In addition, the present invention expands the diameter of the outer surface of the tube end portion, and
It can also be applied to upset processing, which reduces the diameter of the inner surface and thickens the tube end portion inside and out.
［発明の効果］
以上のように１本発明に係る管のアプセット加工方法お
よび装置によれば、管端厚肉部の外面と管定常部の外面
に挟まれる外面テーパー部を、ダイス形状によることな
く、外面ばりのない所望の形状に設定することが可能と
なる。[Effects of the Invention] As described above, according to the method and apparatus for upsetting a pipe according to the present invention, the outer surface tapered portion sandwiched between the outer surface of the thick-walled portion of the tube end and the outer surface of the steady portion of the tube can be formed in a die shape. This makes it possible to set the desired shape without external burrs.
第１図は本発明によるアプセット加工状態を示す制御系
統図、第２図はアプセット加工装置の全体構成を示す正
面図、第３図（Ａ）はアプセット加工方法における据込
み開始前の状態を示す縦割断面図、第３図（Ｂ）は同ア
プセット加工方法における据込み完了時の状態を示す縦
割断面図である。
ｌＯ・・・鋼管、１１・・・加熱装置、１３・・・ダイ
ス、１４・・・ポンチ、１５・・・管端厚肉部、１６・
・・真直状内径部、１７・・・心金部、１８・・・管定
常部、１９・・・外面テーパー部、２０・・・管端中間
部、２１・・・温度測定装置、２２・・・制御器、２３
・・・冷却装置。
代理人 弁理士 塩 川 修 治
第 ２ 図
第３図（８）Fig. 1 is a control system diagram showing the upset processing state according to the present invention, Fig. 2 is a front view showing the overall configuration of the upset processing device, and Fig. 3 (A) shows the state before the start of upsetting in the upset processing method. FIG. 3(B) is a vertical cross-sectional view showing the state when upsetting is completed in the same upsetting method. lO...Steel pipe, 11...Heating device, 13...Dice, 14...Punch, 15...Pipe end thick wall part, 16...
...Straight inner diameter part, 17... Core metal part, 18... Pipe steady part, 19... Outer surface taper part, 20... Pipe end middle part, 21... Temperature measuring device, 22... ...Controller, 23
···Cooling system. Agent Patent Attorney Osamu Shiokawa 2 Figure 3 (8)
Claims (2)
拡径するように管端部分を圧縮して厚肉成形する管のア
プセット加工方法において、管端厚肉部の外面と管定常
部の外面に挟まれて外面テーパー部を形成することとな
る管端中間部の加熱温度分布を、管端厚肉部の側から管
定常部の側に向けて次第に低減させた状態下で、管端厚
肉部の目標外径と同等寸法の真直状内径部を備えてなる
ダイス内に、上記のように加熱された管端部分をセット
し、上記管端部分の内面にフランジ付きポンチの心金部
を挿入し、上記ダイスとポンチによって管端部分を厚肉
成形することを特徴とする管のアプセット加工方法。(1) In a tube upset processing method in which the tube end portion is heated and the tube end portion is compressed to form a thick wall so that the outer diameter of the heated tube end portion increases, the outer surface of the thick wall portion of the tube end is The heating temperature distribution in the middle part of the pipe end, which is sandwiched between the outer surface of the pipe steady part and the outer surface tapered part, is gradually reduced from the side of the thick wall part of the pipe end to the side of the pipe steady part. At the bottom, the heated tube end section is set in a die having a straight inner diameter section with the same dimensions as the target outer diameter of the thick section of the tube end section, and a flange is attached to the inner surface of the tube end section. 1. A method for upsetting a tube, which comprises inserting a core part of a punch and forming a thick tube end portion using the die and punch.
管端部分の外径が拡径するように管端部分を圧縮して厚
肉成形する管のアプセット加工装置において、管端厚肉
部の外面と管定常部の外面に挟まれて外面テーパー部を
形成することとなる管端中間部の長手方向の加熱温度分
布を測定する温度測定装置と、加熱された上記管端中間
部を冷却可能とするとともに、その冷却能を該管端中間
部の長手方向に沿って可変とする冷却装置と、温度測定
装置の測定結果に基づいて、冷却装置を作動制御し、上
記管端中間部の加熱温度分布を、管端厚肉部の側から管
定常部の側に向けて次第に低減させる制御器と、管端厚
肉部の目標外径と同等寸法の真直状内径部を備え、加熱
された管端部分がセットされるダイスと、上記管端部分
の内面に挿入可能とされる心金部を備え、管端を圧縮し
て厚肉成形するフランジ付きポンチとを備えてなること
を特徴とする管のアプセット加工装置。(2) In a tube upset processing device that has a heating device that heats the tube end portion and compresses the tube end portion to form a thick wall so that the outer diameter of the heated tube end portion increases, the tube end portion is A temperature measuring device for measuring the heating temperature distribution in the longitudinal direction of the intermediate portion of the tube end, which is sandwiched between the outer surface of the thick-walled portion and the outer surface of the steady portion of the tube to form the outer surface tapered portion, and the heated intermediate portion of the tube end. a cooling device capable of cooling the intermediate portion of the tube end and whose cooling capacity is variable along the longitudinal direction of the intermediate portion of the tube end; Equipped with a controller that gradually reduces the heating temperature distribution in the intermediate section from the thick-walled section of the tube end to the steady-state section of the tube, and a straight inner diameter section with dimensions equivalent to the target outer diameter of the thick-walled section of the tube end. , a die into which a heated tube end is set, and a flanged punch that has a mandrel that can be inserted into the inner surface of the tube end and compresses the tube end to form a thick wall. A pipe upset processing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12054385A JPS61279328A (en) | 1985-06-05 | 1985-06-05 | Method and device for upset working of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12054385A JPS61279328A (en) | 1985-06-05 | 1985-06-05 | Method and device for upset working of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61279328A true JPS61279328A (en) | 1986-12-10 |
Family
ID=14788897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12054385A Pending JPS61279328A (en) | 1985-06-05 | 1985-06-05 | Method and device for upset working of pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61279328A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6230540B1 (en) * | 1999-10-19 | 2001-05-15 | Meritor Heavy Vehicle Systems Llc | Method and apparatus for forming an integral bearing shoulder in a tubular axle |
| JP2010534136A (en) * | 2007-07-24 | 2010-11-04 | ファウ・ウント・エム・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Method for manufacturing a hot-finished seamless tube constructed to provide optimum fatigue properties in the welded state |
| JP2012045565A (en) * | 2010-08-26 | 2012-03-08 | Hitachi Ltd | Device and method for thickening formation |
| CN109877269A (en) * | 2019-03-21 | 2019-06-14 | 攀钢集团成都钛材有限公司江油分公司 | A kind of temperature control method of radial precision forging titanium or titanium alloy bar |
-
1985
- 1985-06-05 JP JP12054385A patent/JPS61279328A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6230540B1 (en) * | 1999-10-19 | 2001-05-15 | Meritor Heavy Vehicle Systems Llc | Method and apparatus for forming an integral bearing shoulder in a tubular axle |
| JP2010534136A (en) * | 2007-07-24 | 2010-11-04 | ファウ・ウント・エム・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Method for manufacturing a hot-finished seamless tube constructed to provide optimum fatigue properties in the welded state |
| JP2012045565A (en) * | 2010-08-26 | 2012-03-08 | Hitachi Ltd | Device and method for thickening formation |
| CN109877269A (en) * | 2019-03-21 | 2019-06-14 | 攀钢集团成都钛材有限公司江油分公司 | A kind of temperature control method of radial precision forging titanium or titanium alloy bar |
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