JPH0442024Y2 - - Google Patents
Info
- Publication number
- JPH0442024Y2 JPH0442024Y2 JP1986102497U JP10249786U JPH0442024Y2 JP H0442024 Y2 JPH0442024 Y2 JP H0442024Y2 JP 1986102497 U JP1986102497 U JP 1986102497U JP 10249786 U JP10249786 U JP 10249786U JP H0442024 Y2 JPH0442024 Y2 JP H0442024Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- inner tube
- pipe
- ring member
- outer tube
- 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
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 10
- 238000005253 cladding Methods 0.000 claims description 9
- 238000013022 venting Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 206010040844 Skin exfoliation Diseases 0.000 description 3
- 238000010622 cold drawing Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、継目無クラツド管を製造する際に使
用するクラツド用素管の内管外管間の空気抜き装
置の改良に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of an air venting device between an inner tube and an outer tube of a blank tube for cladding used in manufacturing seamless cladding tubes.
（従来の技術）
近時、化学工業プラント用配管や油井管やギヤ
ザリング用ラインパイプではその環境中にCO2や
H2Ｓといつた腐食性物質が多量含有される傾向
があるが、とくにこのような苛酷な使用条件の場
合には、継目無クラツド管の採用が有利となる。
すなわち、炭素綱や低合金綱からなる母材管の内
面にステンレス綱等の高合金綱やニツケルまたは
ニツケル合金の如き耐食材料（合材）を内張した
形のクラツド管の使用が、例えば油井管としての
耐食性能の経済的確保という意味において有利で
ある。(Conventional technology) Recently, pipes for chemical industry plants, oil country tubular goods, and line pipes for gearing have been releasing CO2 and other substances into the environment.
Although they tend to contain large amounts of corrosive substances such as H 2 S, it is advantageous to use seamless clad pipes, especially under such severe usage conditions.
In other words, the use of clad pipes in which the inner surface of a base pipe made of carbon steel or low-alloy steel is lined with a corrosion-resistant material (composite material) such as high-alloy steel such as stainless steel or nickel or nickel alloy is useful for oil wells, for example. This is advantageous in terms of economically ensuring corrosion resistance as a pipe.
さて、かかる油井管用途向けの場合、クラツド
管としては母材と合材が冶金的に完全結合してい
ることが要求されるが、このような高品質のクラ
ツド管を工業的規模で製造する方法として例えば
冷間抽伸法がある。この冷間抽伸法は、遊嵌状の
内外管を冷間抽伸にかけて外管を内管に密着させ
る方法であり、この方法は如何なるサイズの２重
素管でも製造できる点で優れているが以下に示す
欠点があつた。 Now, in the case of such OCTG applications, the cladding pipe is required to have a complete metallurgical bond between the base material and the composite material, but it is difficult to manufacture such high-quality cladding pipe on an industrial scale. For example, there is a cold drawing method. This cold drawing method is a method in which loosely fitted inner and outer tubes are cold drawn to bring the outer tube into close contact with the inner tube.This method is excellent in that it can manufacture double-layered tubes of any size, but the following describes It had the following drawbacks.
内管内に芯金を通してダイスを介し拡管する
方法であるため、拡管をするための芯金を押す
強大な作用力が必要となり、従って、大きな設
備が必要となる。 Since this is a method of passing the core metal into the inner tube and expanding the tube via a die, a strong force is required to push the core metal for tube expansion, and therefore, large equipment is required.
拡管に長時間を必要とする。 It takes a long time to expand the tube.
小径管しか適用できない。 Applicable only to small diameter pipes.
そこで、本出願人は前記冷間抽伸法に較べて歩
留り、能率、コストの何れの点においても格段に
優れた方法を特開昭59−163088号公報にて開示し
た。 Therefore, the present applicant disclosed in Japanese Patent Application Laid-Open No. 163088/1988 a method which is significantly superior to the cold drawing method in terms of yield, efficiency, and cost.
この方法は、外管に内管を挿入してその内管を
水圧拡管することにより密着パイプを得ようとす
るものである。 This method attempts to obtain a tight-fitting pipe by inserting an inner pipe into an outer pipe and expanding the inner pipe by hydraulic pressure.
（考案が解決しようとする問題点）
しかしながら、本出願人が先に開示した特開昭
59−163088号公報の方法は、その後の実験、研究
によつて以下に述べる問題が内在していることが
判明した。(Problem to be solved by the invention) However, the patent application disclosed by the applicant earlier
Through subsequent experiments and research, it has been found that the method disclosed in Publication No. 59-163088 has the following problems.
すなわち、前記方法で内管を水圧拡管した場合
にあつては、水圧拡管時に外管と内管の間に介在
する空気が完全に抜けきれず、その中央部におい
て空気だまりを形成する場合がある。しかして、
この空気だまりを有するクラツド用素管を用いて
所定の熱処理を行ない延伸圧延を施すと、当該部
において剥離が発生し、不良製品となる。 In other words, when the inner pipe is hydraulically expanded using the method described above, the air interposed between the outer pipe and the inner pipe may not be completely removed during hydraulic expansion, and an air pocket may form in the center of the pipe. . However,
When a cladding material tube having this air pocket is subjected to a prescribed heat treatment and then subjected to elongation rolling, peeling occurs at the relevant portions, resulting in a defective product.
本考案はかかる問題を解決せんとして成された
ものであり、クラツド用素管の内管外管間の空気
抜きを良好に行える装置を提供せんとするもので
ある。 The present invention has been made to solve this problem, and aims to provide a device that can effectively vent air between the inner and outer tubes of a blank tube for cladding.
（問題点を解決するための手段）
本考案は、母材又は合材からなる外管に、該外
管より長寸の合材又は母材からなる内管を嵌合せ
しめてなる２重素管の、内管外管間の空気抜き装
置であつて、前記内管の外径より大寸法の内径を
有し、前記外管の両端とこれら両端より夫々突出
する内管外周面との段差部に夫々配設されるリン
グ部材と、該リング部材を含む内外管夫々の外周
面を所要寸法ずつ覆うシール治具及びこのシール
治具の両端部を夫々内外管に締付けるバンド部材
と、前記リング部材のうちの一方に開設された空
気抜き孔に嵌合して真空ポンプ装置に接続される
ノズル部材とを具備して成ることを要旨とするも
のである。(Means for Solving the Problems) The present invention is a double-ply tube made of an outer tube made of a base material or a composite material, and an inner tube made of a composite material or base material that is longer than the outer tube. An air venting device between an inner tube and an outer tube, which has an inner diameter larger than the outer diameter of the inner tube, and has a stepped portion between both ends of the outer tube and an outer circumferential surface of the inner tube that respectively protrudes from both ends. A ring member disposed respectively, a sealing jig that covers the outer circumferential surfaces of the inner and outer tubes including the ring member in required dimensions, a band member that tightens both ends of the sealing jig to the inner and outer tubes, respectively, and a ring member of the ring member. The main feature is that the nozzle member is connected to a vacuum pump device by fitting into an air vent hole formed on one side of the nozzle member.
（作用）
本考案は、母材又は合材からなる外管に、該外
管より長寸の合材又は母材からなる内管を嵌合せ
しめてなる２重素管の、内管外管間の空気抜き装
置であつて、前記内管の外径より大寸法の内径を
有し、前記外管の両端とこれら両端より夫々突出
する内管外周面との段差部に夫々配設されるリン
グ部材と、該リング部材を含む内外管夫々の外周
面を所要寸法ずつ覆うシール治具及びこのシール
治具の両端部を夫々内外管に締付けるバンド部材
と、前記リング部材のうちの一方に開設された空
気抜き孔に嵌合して真空ポンプ装置に接続される
ノズル部材とを具備して成る構成である為、内管
の拡管時に内外管の間に介在する空気を真空引き
することができる。(Function) The present invention provides a double base tube in which an outer tube made of a base material or composite material is fitted with an inner tube made of composite material or base material that is longer than the outer tube, between the inner and outer tubes. In the air venting device, the ring member has an inner diameter larger than the outer diameter of the inner tube and is disposed at a stepped portion between both ends of the outer tube and an outer circumferential surface of the inner tube that respectively protrudes from both ends. a sealing jig that covers the outer peripheral surfaces of each of the inner and outer tubes including the ring member in required dimensions; a band member that tightens both ends of this sealing jig to the inner and outer tubes, respectively; and a band member provided on one of the ring members. Since the structure includes a nozzle member that fits into the air vent hole and is connected to a vacuum pump device, the air present between the inner and outer tubes can be evacuated when the inner tube is expanded.
（実施例）
以下本考案を添付図面に示す一実施例に基づい
て説明する。(Example) The present invention will be described below based on an example shown in the accompanying drawings.
図面において、１は例えば断面直角三角形状の
截頭円錐形を成すリング部材であり、その内径寸
法は内管３の外径より大きく（本実施例では外管
２の内径と略同径に）成され、前記外管２の両端
とこれら両端より夫々突出する内管３の外周面と
の段差部に配設されて使用するものである。そし
て、これらリング部材１のうち一方には後述する
ノズル部材４の螺合用空気抜き孔５が開設されて
おり、水圧拡管時に該空気抜き孔５を介して外管
２と内管３の間に存在する空気を真空引きするよ
うに成されている。 In the drawings, 1 is a ring member having a truncated conical shape with a right triangular cross section, for example, and its inner diameter is larger than the outer diameter of the inner tube 3 (in this embodiment, it is approximately the same diameter as the inner diameter of the outer tube 2). It is used by being disposed at a step between both ends of the outer tube 2 and the outer circumferential surface of the inner tube 3 protruding from both ends. One of these ring members 1 is provided with an air vent hole 5 for screwing a nozzle member 4, which will be described later. It is designed to vacuum the air.
６は前記した外管２と内管３との段差部に配設
されるリング部材１を含んで外管２と内管３の
夫々の外周面を所要寸法宛覆うシール治具であ
り、例えば厚さ10mm程度のニトリルゴムにより製
作されている。そして、水圧拡管時にはリング部
材１とこれの両側に位置する外管２及び内管３を
夫々所要寸法宛覆う如く装着され、その両端部に
おいて夫々外管２及び内管３にバンド部材７によ
つて締付けられて使用するものである。なお、一
方のシール部材６の前記リング部材１に開設され
た空気抜き孔５に相対する位置には、前記空気抜
き孔５と同様の孔８が開設されている。 Reference numeral 6 denotes a sealing jig that includes a ring member 1 disposed at the step between the outer tube 2 and the inner tube 3 and covers the outer peripheral surfaces of the outer tube 2 and the inner tube 3 to a required size, for example. Manufactured from nitrile rubber with a thickness of approximately 10 mm. During hydraulic pipe expansion, the ring member 1 and the outer pipe 2 and inner pipe 3 located on both sides of the ring member 1 are installed so as to cover them to the required dimensions, and band members 7 are attached to the outer pipe 2 and inner pipe 3 at both ends thereof. It is used by being attached and tightened. Note that a hole 8 similar to the air vent hole 5 is formed in one of the sealing members 6 at a position opposite to the air vent hole 5 formed in the ring member 1 .
４は前記空気抜き孔５に螺刻された例えばテー
パ雌ねじに螺合するテーパ雄ねじをその先端部に
有するノズル部材であり、後端部には例えば配管
１０を介して真空ポンプ装置９が接続されてい
る。 Reference numeral 4 denotes a nozzle member having at its tip a tapered male thread that is screwed into, for example, a tapered female thread threaded into the air vent hole 5, and a vacuum pump device 9 is connected to the rear end via, for example, piping 10. There is.
１１は前記内管３の両端に夫々装着される管端
シール治具であり、このうちの一方には透孔１２
が開設されて例えば水圧プランジヤーポンプ１３
と接続され、水圧拡管時に密閉された内管３の中
に圧力水を供給できるように成されている。 Reference numeral 11 denotes tube end sealing jigs that are attached to both ends of the inner tube 3, one of which is provided with a through hole 12.
For example, hydraulic plunger pump 13
The inner pipe 3 is connected to the inner pipe 3 and is configured to be able to supply pressurized water into the sealed inner pipe 3 during hydraulic pipe expansion.
上記した各構成部品から成る内管外管間の空気
抜き装置を用いて外管２と内管３の間に存在する
空気が0.03Torrになるまで真空引きして水圧拡
管装置で内管３を拡管し、φ323.9×t13.0（外管
t10.0、内管t3.0）×l10000、材質：外管普通鋼、
内管SUS316L鋼のクラツド用素管を製造した。 The air existing between the outer tube 2 and the inner tube 3 is evacuated to 0.03 Torr using the air venting device between the inner tube and the outer tube made up of the above-mentioned components, and the inner tube 3 is expanded using a hydraulic tube expansion device. φ323.9×t13.0 (outer tube
t10.0, inner tube t3.0) x l10000, material: outer tube ordinary steel,
The inner tube was made of SUS316L steel for the cladding.
そして、こうして得たクラツド用素管を素材と
して1250℃に加熱後、マンネスマンプラグミルに
て延伸圧延を施したところ10本全てに剥離が発生
せず、高品質のクラツド鋼管が製造できた。 Then, after heating the thus-obtained raw tube for cladding to 1250°C and elongation rolling in a Mannesmann plug mill, no peeling occurred in all 10 tubes, and high-quality clad steel tubes could be manufactured.
これに対し、本出願人が先に開示した特開昭59
−163088号公報に記載の方法で同様のクラツド鋼
管を製造したところ10本中２本に直径50mm程度の
剥離が１〜３ケ所発生した。 On the other hand, the present applicant previously disclosed JP-A No. 59
When similar clad steel pipes were manufactured using the method described in Publication No. 163088, two out of 10 pipes had 1 to 3 peelings with a diameter of about 50 mm.
（考案の効果）
以上説明したように本考案は、母材又は合材か
らなる外管に、該外管より長寸の合材又は母材か
らなる内管を嵌合せしめてなる２重素管の、内管
外管間の空気抜き装置であつて、前記内管の外径
より大寸法の内径を有し、前記外管の両端とこれ
ら両端より夫々突出する内管外周面との段差部に
夫々配設されるリング部材と、該リング部材を含
む内外管夫々の外周面を所要寸法ずつ覆うシール
治具及びこのシール治具の両端部を夫々内外管に
締付けるバンド部材と、前記リング部材のうちの
一方に開設された空気抜き孔に嵌合して真空ポン
プ装置に接続されるノズル部材とを具備して成る
構成である為、内管の拡管時に内外管の間に介在
する空気を真空引きすることができる。従って本
考案装置によれば内管を拡管した後内管と外管の
間に空気だまりが発生せず、クラツド鋼管の製造
時にこの空気だまりに起因する剥離が発生しな
い。よつて高品質のクラツド鋼管が安定して製造
できることになる。(Effects of the invention) As explained above, the present invention is a double-ply tube made of an outer tube made of a base material or a composite material, and an inner tube made of a composite material or base material that is longer than the outer tube. An air venting device between an inner tube and an outer tube, which has an inner diameter larger than the outer diameter of the inner tube, and has a stepped portion between both ends of the outer tube and an outer circumferential surface of the inner tube that respectively protrudes from both ends. A ring member disposed respectively, a sealing jig that covers the outer circumferential surfaces of the inner and outer tubes including the ring member in required dimensions, a band member that tightens both ends of the sealing jig to the inner and outer tubes, respectively, and a ring member of the ring member. Since the structure includes a nozzle member that fits into an air vent hole opened on one side and is connected to a vacuum pump device, the air interposed between the inner and outer tubes can be evacuated when the inner tube is expanded. can do. Therefore, according to the device of the present invention, no air pockets are generated between the inner pipe and the outer pipe after the inner pipe is expanded, and separation due to the air pockets does not occur during the manufacture of clad steel pipes. Therefore, high quality clad steel pipes can be manufactured stably.
第１図は本考案装置を一部断面して示す説明
図、第２図はリング部材とシール治具の拡大一部
切欠正面図である。
１はリング部材、２は外管、３は内管、４はノ
ズル部材、５は空気抜き孔、６はシール治具、７
はバンド部材、９は真空ポンプ装置、１１は管端
シール部材、１３は水圧プランジヤーポンプ。
FIG. 1 is an explanatory diagram showing a partially sectional view of the device of the present invention, and FIG. 2 is an enlarged partially cutaway front view of a ring member and a sealing jig. 1 is a ring member, 2 is an outer pipe, 3 is an inner pipe, 4 is a nozzle member, 5 is an air vent hole, 6 is a sealing jig, 7
1 is a band member, 9 is a vacuum pump device, 11 is a tube end sealing member, and 13 is a hydraulic plunger pump.
Claims (1)
の合材又は母材からなる内管を嵌合せしめてなる
２重素管の、内管外管間の空気抜き装置であつ
て、前記内管の外径より大寸法の内径を有し、前
記外管の両端とこれら両端より夫々突出する内管
外周面との段差部に夫々配設されるリング部材
と、該リング部材を含む内外管夫々の外周面を所
要寸法ずつ覆うシール治具の両端部を夫々内外管
に締付けるバンド部材と、前記リング部材のうち
の一方に開設された空気抜き孔に嵌合して真空ポ
ンプ装置に接続されるノズル部材とを具備して成
ることを特徴とするクラツド用素管の内管外管間
の空気抜き装置。 An air venting device between an inner tube and an outer tube of a double-layered tube, which is formed by fitting an outer tube made of a base material or composite material to an inner tube made of a composite material or base material that is longer than the outer tube, A ring member having an inner diameter larger than the outer diameter of the inner tube and disposed at a stepped portion between both ends of the outer tube and an outer circumferential surface of the inner tube protruding from each end, and the ring member. A band member that tightens both ends of a sealing jig that covers the outer peripheral surfaces of the inner and outer tubes with required dimensions to the inner and outer tubes, respectively, and an air vent hole formed in one of the ring members to connect to a vacuum pump device. 1. An air venting device between an inner tube and an outer tube of a blank tube for a cladding, characterized in that the device comprises a nozzle member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986102497U JPH0442024Y2 (en) | 1986-07-02 | 1986-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986102497U JPH0442024Y2 (en) | 1986-07-02 | 1986-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6311134U JPS6311134U (en) | 1988-01-25 |
| JPH0442024Y2 true JPH0442024Y2 (en) | 1992-10-02 |
Family
ID=30974196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986102497U Expired JPH0442024Y2 (en) | 1986-07-02 | 1986-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442024Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609935U (en) * | 1983-06-29 | 1985-01-23 | 志村 芳直 | swimming cap with tag |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5785683A (en) * | 1980-11-19 | 1982-05-28 | Kawasaki Heavy Ind Ltd | Production of doubleply pipes |
| JPS57146419A (en) * | 1981-03-05 | 1982-09-09 | Kawasaki Heavy Ind Ltd | Manufacture of double tube |
| JPS6049818A (en) * | 1983-08-30 | 1985-03-19 | Toshio Yoshida | Apparatus for producing tight double-layered pipe |
-
1986
- 1986-07-02 JP JP1986102497U patent/JPH0442024Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5785683A (en) * | 1980-11-19 | 1982-05-28 | Kawasaki Heavy Ind Ltd | Production of doubleply pipes |
| JPS57146419A (en) * | 1981-03-05 | 1982-09-09 | Kawasaki Heavy Ind Ltd | Manufacture of double tube |
| JPS6049818A (en) * | 1983-08-30 | 1985-03-19 | Toshio Yoshida | Apparatus for producing tight double-layered pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6311134U (en) | 1988-01-25 |
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