JPH057593B2 - - Google Patents
Info
- Publication number
- JPH057593B2 JPH057593B2 JP725684A JP725684A JPH057593B2 JP H057593 B2 JPH057593 B2 JP H057593B2 JP 725684 A JP725684 A JP 725684A JP 725684 A JP725684 A JP 725684A JP H057593 B2 JPH057593 B2 JP H057593B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- pipe
- corrosion
- metal
- joined
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 33
- 239000010935 stainless steel Substances 0.000 claims description 24
- 238000005260 corrosion Methods 0.000 claims description 20
- 230000007797 corrosion Effects 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000010936 titanium Substances 0.000 description 47
- 238000003466 welding Methods 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 10
- 229910000975 Carbon steel Inorganic materials 0.000 description 9
- 239000010962 carbon steel Substances 0.000 description 9
- 229910001069 Ti alloy Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005304 joining Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】
〈技術分類・分野〉
開示技術は、油井管等の構造とその製造技術分
野に属する。[Detailed Description of the Invention] <Technical Classification/Field> The disclosed technology belongs to the field of structure and manufacturing technology for oil country tubular goods and the like.
〈要旨の解説〉
而して、この出願の発明は、炭素鋼製などの外
管に対しTi等の耐蝕材がその管全体に内張接合
されて一種の二重管構造とされている耐蝕鋼管、
及び、その製造方法に関する発明であり、特に、
管全体がその外管に於いて端管と該端管に接合さ
れる一般管とから成り、該端管の管端部にはTi
金属が拡散接合などの手段によつて冶金的に接合
されており、又、該端管のTi金属を含めて管全
体にTi金属が内張接合され、更に、該内張接合
Ti金属は上記端管の管端部に於いてTiシール溶
接されている二重管タイプの耐蝕鋼管とその製造
方法に係る発明である。<Explanation of the gist> The invention of this application is a corrosion-resistant material in which an outer tube made of carbon steel or the like is lined with a corrosion-resistant material such as Ti to form a kind of double-pipe structure. steel pipe,
and a method for producing the same, in particular,
The entire tube consists of an end tube and a general tube connected to the end tube in its outer tube, and the end of the end tube is coated with Ti.
The metals are metallurgically joined by means such as diffusion bonding, and Ti metal is lined and bonded to the entire tube including the Ti metal of the end tube, and further, the lined bonded
The invention relates to a double-pipe type corrosion-resistant steel pipe in which Ti metal is welded with a Ti seal at the end of the end pipe, and a method for manufacturing the same.
〈従来技術〉
周知の如く、油井管や原子力プラント配管等に
用いる管は単なる耐圧性や耐熱性ばかりでなく、
耐蝕性も必要とされている。<Prior art> As is well known, pipes used for oil country tubular goods, nuclear power plant piping, etc. are not only pressure resistant and heat resistant.
Corrosion resistance is also required.
このような条件に合致する耐蝕鋼管としては、
高合金のステンレス鋼やNi基合金が用いられて
きたが、かかる合金は高価であるために、耐熱耐
圧性を炭素鋼製の外管でもたせ、その内面に接合
する内管として耐蝕金属を冶金的、或は、機械的
にライニングするような手段が案出されてきてい
る。 Corrosion-resistant steel pipes that meet these conditions include:
High-alloy stainless steel and Ni-based alloys have been used, but since such alloys are expensive, a carbon steel outer tube has heat and pressure resistance, and a corrosion-resistant metal is used as the inner tube to be bonded to the inner surface. Measures have been devised to provide lining, either mechanically or mechanically.
而して、外管に耐蝕内管を接合する技術として
は、機械的なライニング等の接合よりもクラツド
のような冶金的な接合の方が強度的に優れている
ことは分つている。 As a technique for joining the corrosion-resistant inner pipe to the outer pipe, it is known that metallurgical joining such as cladding is superior in terms of strength to joining such as mechanical lining.
而して、例えば、耐蝕性に優れているTi、或
は、Ti合金等のTi金属を用いて外管に冶金的に
接合することは一般には技術的に困難である。 Therefore, it is generally technically difficult to metallurgically join the outer tube using, for example, Ti, which has excellent corrosion resistance, or a Ti metal such as a Ti alloy.
さりながら、近時TiやTi合金と炭素鋼製の外
管等を、例えば、爆着、或は、拡散接合などによ
つて冶金的に接合することが可能となつてきてい
る。 However, in recent years, it has become possible to metallurgically join Ti or a Ti alloy to an outer tube made of carbon steel, for example, by explosion bonding or diffusion bonding.
ところで、一般に配管はその長さが長ければ長
いほど継手部が少なくなり、強度的に配管が安定
するのみならず、配管作業が少なくて済むという
メリツトがあるが、配管のユニツト長には工場製
造時に装置上の制約がある上に、現地据付けまで
に工場から輸送する際に長さにも制限があるた
め、その長さは規格的に決まつており、したがつ
て、ユニツト長さはその長さが決められている。 By the way, in general, the longer the length of piping, the fewer joints there are, which not only makes the piping more stable in terms of strength, but also has the advantage of requiring less piping work. Sometimes there are restrictions on the equipment, and there are also restrictions on the length when transporting from the factory before on-site installation, so the length is determined by the standard, so the unit length is The length is determined.
勿論、特殊な場合には素材を接合した後に塑性
加工するような手段もあるが、一般には炭素鋼製
外管と耐蝕Ti、或は、Ti合金との加工性の違い
もあるため、該種耐蝕鋼管に於いては長尺の塑性
加工は困難とされている。 Of course, in special cases there is a method of plastic working after joining the materials, but in general there is a difference in workability between the carbon steel outer tube and corrosion-resistant Ti or Ti alloy, so Plastic working of long lengths of corrosion-resistant steel pipes is considered difficult.
ところで、上記設定ユニツト長の耐蝕鋼管を工
場で製造した後に現地据付けのための輸送を行う
が、その間、一時的に野積等の手段をとらざるを
得ず、この間、外管と内張接合された耐蝕内管と
は管端に於いて経時的に腐蝕が境界面の内側に進
行する虞れがあるために、管端に一般にはシール
溶接をしなければならない。 By the way, after the corrosion-resistant steel pipes with the specified unit length are manufactured at a factory, they are transported for on-site installation, but during this time, temporary methods such as piling them up in the open have to be taken, and during this time, the outer pipe and inner pipe are joined together. Corrosion-resistant inner tubes generally require seal welding at the tube ends because there is a risk that corrosion may progress to the inside of the interface over time.
さりながら、外管の炭素製等の内面の耐蝕Ti、
或は、Ti合金とは中間材を用いてもその強度が
充分には期待出来ないという欠点があつた。 However, the inner surface of the outer tube is made of carbon, etc., and the inner surface is made of corrosion-resistant Ti.
Another drawback of Ti alloys is that even if an intermediate material is used, sufficient strength cannot be expected.
又、このように、内張接合接合される耐蝕性の
Ti、或は、Ti合金はその耐蝕性においては優れ
てはいるものの、鋼管管端に於けるシール溶接に
は冶金的に不都合さがあるという難点があつた。 In addition, in this way, the corrosion-resistant
Although Ti or Ti alloys have excellent corrosion resistance, they have the disadvantage of being metallurgically inconvenient for seal welding at the ends of steel pipes.
〈発明の目的〉
この出願の発明の目的は上述従来技術に基づく
耐蝕材内張接合耐蝕鋼管の問題点を解決すべき技
術的課題とし、その耐蝕性に優れたTi、或は、
Ti合金のTi金属を外管に対する内張接合の内管
として有効に利用出来るようにし、又、その管端
に於けるシール溶接が確実に充分な強度を有して
行えることが出来るようにして、各種産業におけ
る配管利用分野に益する優れた耐蝕鋼管、及び、
その製造方法を提供せんとするものである。<Object of the Invention> The object of the invention of this application is to solve the problems of corrosion-resistant steel pipes lined with corrosion-resistant material based on the above-mentioned prior art, and to solve the problems of corrosion-resistant steel pipes lined with corrosion-resistant materials,
To enable Ti metal of Ti alloy to be effectively used as an inner pipe for lining joining to an outer pipe, and to ensure that seal welding at the end of the pipe can be performed with sufficient strength. , excellent corrosion-resistant steel pipes that benefit piping applications in various industries, and
The present invention aims to provide a method for producing the same.
〈発明の構成〉
上述目的に沿い先述特許請求の範囲を要旨とす
るこの出願の発明の構成は、前述問題点を解決す
るために炭素鋼製等の外管を予め設計的に端管と
一般管に二分割しておき、該端管の管端にその管
端部に所定のTi金属を拡散接合などの手段によ
り冶金的に接合しておき、次いで、上記二分割の
外管の一般管を端管と対応させて突合せ溶接等に
より接合し、その後、該端管、及び、一般管を含
めて管全体内面に所定のTi金属を相対重層させ
て液圧拡管等の手段により充分な嵌合代を介して
緊結結合して内張接合し、而して、最後には上記
外管の端管の端部と該内張接合したTi金属との
端部をTiシール溶接して確実にシールさせるよ
うにし、製造後から現場据付け間での野積等にお
いても管端腐蝕侵入に対処出来るように、又、所
定ユニツト長の耐蝕鋼管が確実に製造出来るよう
にした技術的手段を講じたものである。<Structure of the Invention> The structure of the invention of this application, which is based on the above-mentioned claims in accordance with the above-mentioned purpose, is that in order to solve the above-mentioned problems, the outer tube made of carbon steel or the like is designed in advance to be an end tube and a general tube. The pipe is divided into two parts, a predetermined Ti metal is metallurgically joined to the end of the end pipe by means such as diffusion bonding, and then the general pipe of the two-part outer pipe is are matched with the end pipes and joined by butt welding, etc., and then a predetermined Ti metal is relatively overlaid on the inner surface of the entire pipe including the end pipes and the general pipe, and a sufficient fit is made by means such as hydraulic pipe expansion. The lining is joined by tightly connecting the outer tube through the joint, and finally, the end of the end tube of the outer tube and the end of the lining-joined Ti metal are welded with a Ti seal to ensure surety. The pipes are sealed, and technical measures have been taken to prevent corrosion from entering the pipe ends even when the pipes are piled up in the open between manufacturing and on-site installation, and to ensure that corrosion-resistant steel pipes of a specified unit length can be manufactured. It is.
〈実施例−構成〉
次に、この考案の実施例を図面に基づいて説明
すれば以下の通りである。<Embodiment - Configuration> Next, an embodiment of this invention will be described below based on the drawings.
第１〜３図に示す実施例は油井管に用いるカツ
プリング継手連結のピンタイプの耐蝕鋼管の態様
であり、炭素鋼製の外管の一般管と分割された端
管１は炭素鋼製であり、その前端には図示しない
カツプリングに対するピン部の雄ねじ２が形成さ
れると共に、その先端、及び、内面には内張接合
部３が所定の機械加工により行われ、又、後端に
は開先加工４が形成されている。 The embodiment shown in Figures 1 to 3 is an embodiment of a pin-type corrosion-resistant steel pipe connected by a coupling joint used for oil country tubular goods, and the end pipe 1, which is separated from the general pipe of the outer pipe made of carbon steel, is made of carbon steel. At its front end, a male thread 2 of a pin part for a coupling ring (not shown) is formed, and at its tip and inner surface, a lining joint part 3 is formed by predetermined machining, and at its rear end, a bevel is formed. Processing 4 is formed.
而して、このように形成された外管の端管１に
対して、その内面が滑かな面一になるようにTi
製であつて、先端にフランジ部５を有している短
円筒状の短管６を拡散接合により一体化する。 Then, Ti is applied so that the inner surface is smooth and flush with the end tube 1 of the outer tube formed in this way.
A short cylindrical short tube 6 made of aluminum and having a flange portion 5 at its tip is integrated by diffusion bonding.
尚、この場合、拡散接合は上記端管１が短いた
めに通常一般の拡散接合手段を用いることが出来
る。 In this case, since the end tube 1 is short, ordinary diffusion bonding means can be used for diffusion bonding.
このようにして、端管１が形成されると、第２
図に示す様に外管の分割体としての炭素鋼製の一
般管７をその開先を介して端管１に対し突合せ溶
接８を形成し一体連結して外管９を形成する。 In this way, when the end tube 1 is formed, the second
As shown in the figure, a general tube 7 made of carbon steel, which serves as a divided body of the outer tube, is integrally connected to the end tube 1 by forming a butt weld 8 through its bevel to form an outer tube 9.
このように外管９が形成されると、第３図に示
す様にその内部にTi製の内管１０を外管の管全
体に亘つて相対重層し、該外管９と内管１０とを
周知の液圧拡管等により充分な嵌合代を介して緊
結結合する。 When the outer tube 9 is formed in this way, an inner tube 10 made of Ti is layered therein over the entire outer tube, as shown in FIG. are tightly connected through a sufficient fitting margin using well-known hydraulic pipe expansion or the like.
この状態においては該内管１０と外管９の端管
１の先端のTi製の短管６とはその先端に於いて
一致するために、そこで両者を管端１１に於いて
適宜シール溶接１２を行つて管端シールを行う。 In this state, the inner tube 10 and the short Ti tube 6 at the tip of the end tube 1 of the outer tube 9 coincide at their tips, so both are appropriately sealed and welded 12 at the tube end 11. to seal the tube end.
尚、Ti金属のシール溶接はチタン短管６の途
中であつてもさしつかえないものである。 Note that seal welding of Ti metal may be performed even in the middle of the short titanium tube 6.
又、この場合、端管１の管端は短管６と内管１
０とがTi金属相互であることにより、シール溶
接は容易に行われ、その強度は充分に確保出来、
又、該端管１の管端１１に於いては、予め、拡散
接合によりTi製の短管６は確実に冶金的に接合
されている。 In addition, in this case, the tube end of the end tube 1 is connected to the short tube 6 and the inner tube 1.
0 and Ti metal, seal welding can be easily performed and sufficient strength can be ensured.
Further, at the tube end 11 of the end tube 1, the Ti short tube 6 is reliably metallurgically bonded in advance by diffusion bonding.
したがつて、このような耐蝕鋼管１３を製造し
た後に、現地輸送までの間、野積等を行つても、
その管端１１から腐蝕等が内管１０と外管９の境
界に侵入する虞れは全くなくなる。 Therefore, even if such corrosion-resistant steel pipes 13 are manufactured and piled up in the open until they are transported to the site,
There is no possibility that corrosion or the like will invade the boundary between the inner tube 10 and the outer tube 9 from the tube end 11.
又、第４，５図に示す実施例はプラント用、或
は、輸送用の配管の態様であるが、上述実施例同
様に炭素鋼製の外管を二分割して、その端管１′
を上述実施例同様、Ti製のバツクフランジ５′を
有する短管６′とを該端管１′の機械加工面３に合
致させて所定の拡散接合により一体固定してお
き、これに対し、一般管７を開先を介して該端管
１′に突合せ溶接８により一体連結して外管９′を
形成し、それが終わると、第５図に示す様に、
Ti金属製の内管１０を相対重層させて、外管
９′の管全体に亘り、液圧拡管を介して充分な嵌
合代を得て緊結結合し、所定ユニツト長の耐蝕鋼
管１３′相互の管端対向面の上記端管１′，１′の
短管６′，６′相互、及び、内管１０，１０を四者
一体的にシール溶接１２を行うようにした態様で
ある。 In addition, the embodiment shown in FIGS. 4 and 5 is an embodiment of piping for a plant or transportation, but as in the above embodiment, the carbon steel outer tube is divided into two, and the end tube 1' is divided into two parts.
As in the above-mentioned embodiment, a short pipe 6' having a back flange 5' made of Ti is aligned with the machined surface 3 of the end pipe 1' and fixed together by a predetermined diffusion bonding. The general pipe 7 is integrally connected to the end pipe 1' through the groove by butt welding 8 to form an outer pipe 9', and when this is completed, as shown in FIG.
The inner tubes 10 made of Ti metal are layered relative to each other, and the entire outer tube 9' is tightly connected to the outer tube 9' with a sufficient fitting margin through hydraulic tube expansion, and the corrosion-resistant steel tubes 13' of a predetermined unit length are connected to each other. In this embodiment, the short pipes 6', 6' of the end pipes 1', 1' and the inner pipes 10, 10 on the opposing surfaces of the pipe ends are integrally sealed by welding 12 on the four parts.
当該シール溶接１２は、一方側のユニツト長の
耐蝕鋼管１３′の端管１′に於いて内管１０と該端
管１′の管端のTi対向面相互をシール溶接１２し
てシールしても良い。 The seal welding 12 is performed by sealing the inner tube 10 and the Ti facing surfaces of the end tube 1' of the end tube 1' of the unit-length corrosion-resistant steel tube 13' on one side by seal welding 12 to each other. Also good.
尚、この出願の発明の実施態様は上述実施例に
限るものでないことは勿論であり、例えば、適用
対象は油井管に限らず、原子力配管等にも使用出
来、ユニツト長の耐蝕鋼管の端管の肉厚や直径な
どは自由に選択する種々の態様が採用可能であ
る。 It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments.For example, the application is not limited to oil country tubular goods, but can also be used for nuclear power piping, etc., and can be applied to end pipes of unit-length corrosion-resistant steel pipes. Various embodiments can be adopted in which the wall thickness and diameter can be freely selected.
又、内張接合の内管はその材質がTiに限らず
Ti合金でも良いことは勿論である。 In addition, the material of the inner pipe for lined joints is not limited to Ti.
Of course, a Ti alloy may also be used.
又、外管の端管の内面に内張接合するTi金属
については前述拡散接合のみならず、圧接等も使
用することが出来る。 Furthermore, for the Ti metal that is lined and bonded to the inner surface of the end tube of the outer tube, not only the above-mentioned diffusion bonding but also pressure bonding or the like can be used.
〈発明の効果〉
以上、この出願の発明によれば、基本的に耐蝕
鋼管に於いてその外管に対し内張接合するTiや
Ti合金等のTi金属であるために、極めて、その
耐蝕性能が良く、耐蝕鋼管として充分に機能する
ことが出来るという優れた効果が奏される。<Effects of the Invention> As described above, according to the invention of this application, basically, in a corrosion-resistant steel pipe, Ti or
Since it is a Ti metal such as a Ti alloy, it has extremely good corrosion resistance and has the excellent effect of being able to function satisfactorily as a corrosion-resistant steel pipe.
又、その管端部に於いて端管のTi金属に対し
て管全体に接合されたTi金属製の内管が管端部
にてTiシールされているために、耐蝕鋼管が工
場に於いて製造された後、現地据付けまでに輸送
等の条件から野積等された場合においても、管端
から腐蝕が外管と内管との間に侵入しないという
優れた効果が奏される。 In addition, since the inner tube made of Ti metal is joined to the Ti metal of the end tube and the entire tube is sealed with Ti at the tube end, the corrosion-resistant steel tube is not manufactured at the factory. Even if the tube is stored in the open due to transportation conditions after manufacturing and before installation at the site, it has the excellent effect of preventing corrosion from entering between the outer tube and the inner tube from the tube end.
而して、該外管の端管に短いTi金属が内張接
合されているために、該内張接合管とのTiシー
ル溶接がし易く、したがつて、管端部に於けるシ
ールが確実に行われるという優れた効果が奏され
る。 Since a short Ti metal is lined and joined to the end tube of the outer tube, it is easy to weld the Ti seal with the inner lined joint tube, and therefore the seal at the tube end is easy to weld. An excellent effect is achieved in that it is carried out reliably.
而して、該耐蝕鋼管の製造方法においては外管
の端管と一般管を分割しておき、予め、該端管の
管端部にTi金属を冶金的に接合しておくように
したために、該外管の端管に対してTi金属は拡
散接合などを行う場合に、その長さが短いことに
より装置内に容易にセツト出来、最終製品として
の耐蝕鋼管の長さに無関係にその端管にTi金属
を接合することが出来るという優れた効果が奏さ
れる。 Therefore, in the method for manufacturing the corrosion-resistant steel pipe, the end pipe of the outer pipe and the general pipe are separated, and Ti metal is metallurgically joined to the end of the end pipe in advance. When performing diffusion bonding on the end tube of the outer tube, Ti metal can be easily set in the equipment due to its short length, and the end tube can be easily attached to the end tube regardless of the length of the corrosion-resistant steel tube as the final product. The excellent effect of being able to join Ti metal to the tube is achieved.
而して、該Ti金属を接合した端管に対して一
般管を接合して連結するために、その外管全体の
形成は容易に行うことが出来るという効果が奏さ
れる。 Since the general pipe is joined and connected to the end pipe to which the Ti metal is joined, the entire outer pipe can be easily formed.
又、このようにして形成された外管の内側に
Ti金属を管全体に相対重層して該Ti金属を管全
体内面に接合するために該Ti金属の管端が外管
に確実に接合されないとしても、最終的に、該内
面の管端に於いて上記端管のTi金属の管端部に
対してTiシール溶接することによつて確実に外
管に対する内張接合のTiシール溶接を行つてシ
ールすることが出来るという効果が奏される。 Also, inside the outer tube formed in this way,
Even if the Ti metal tube end is not reliably bonded to the outer tube because the Ti metal is layered over the entire tube and the Ti metal is bonded to the inner surface of the entire tube, eventually the inner tube end is bonded to the inner tube end. By performing Ti seal welding to the Ti metal pipe end of the end tube, the inner lining can be reliably welded to the outer tube for sealing.
図面はこの出願の発明の実施例を示すものであ
り、第１〜３図は１実施例の製造方法プロセス説
明図、第４，５図は他の実施例の耐蝕鋼管の製造
方法プロセス説明図である。
９，９′……外管、６，６′，１０……耐蝕材、
１３，１３′……耐蝕鋼管、１′……端管、１１…
…管端、６，６′……Ti金属、１０……Ti金属。
The drawings show examples of the invention of this application, and FIGS. 1 to 3 are process explanatory diagrams of the manufacturing method of one embodiment, and FIGS. 4 and 5 are process explanatory diagrams of the manufacturing method of corrosion-resistant steel pipes of other embodiments. It is. 9, 9'... Outer pipe, 6, 6', 10... Corrosion resistant material,
13, 13'... Corrosion-resistant steel pipe, 1'... End pipe, 11...
...Tube end, 6,6'...Ti metal, 10...Ti metal.
Claims (1)
鋼管において、該外管が端管と該端管に接合され
た一般管とから成り、而して該端管の管端部に
Ti金属が冶金的に接合され、又管全体にTi金属
は管端部にてTiシール溶接されていることを特
徴とする耐蝕鋼管。 ２ 予め外管の端管の管端部にTi金属を冶金的
に接合しておき、次いで外管の一般管を接合し、
その管全体内面にTi金属を内張接合し、最後に
該内張接合Ti金属と上記端管の管端部とをTiシ
ール溶接するようにしたことを特徴とする耐蝕鋼
管製造方法。[Scope of Claims] 1. A corrosion-resistant steel pipe in which a corrosion-resistant material is lined and joined to an outer pipe, and the outer pipe consists of an end pipe and a general pipe joined to the end pipe, and the outer pipe consists of an end pipe and a general pipe joined to the end pipe. at the end of the tube
A corrosion-resistant steel pipe characterized in that Ti metal is metallurgically joined, and the Ti metal is welded with a Ti seal at the end of the pipe. 2. Ti metal is metallurgically joined to the end of the end pipe of the outer pipe in advance, and then the general pipe of the outer pipe is joined,
1. A method for producing a corrosion-resistant steel pipe, characterized in that a Ti metal is lined and bonded to the entire inner surface of the tube, and finally the bonded Ti metal liner and the end of the end tube are welded with a Ti seal.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP725684A JPS60151490A (en) | 1984-01-20 | 1984-01-20 | Corrosion-resistant steel pipe and manufacture thereof |
| DE8585100385T DE3571683D1 (en) | 1984-01-20 | 1985-01-16 | Corrosion resisting steel pipe and method of manufacturing same |
| EP85100385A EP0150041B1 (en) | 1984-01-20 | 1985-01-16 | Corrosion resisting steel pipe and method of manufacturing same |
| CA000472321A CA1239100A (en) | 1984-01-20 | 1985-01-17 | Corrosion resisting steel pipe and method of manufacturing same |
| US07/310,003 US4883292A (en) | 1984-01-20 | 1989-02-10 | Corrosion resisting steel pipe and method of manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP725684A JPS60151490A (en) | 1984-01-20 | 1984-01-20 | Corrosion-resistant steel pipe and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60151490A JPS60151490A (en) | 1985-08-09 |
| JPH057593B2 true JPH057593B2 (en) | 1993-01-29 |
Family
ID=11660945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP725684A Granted JPS60151490A (en) | 1984-01-20 | 1984-01-20 | Corrosion-resistant steel pipe and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60151490A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695068A (en) * | 2015-08-21 | 2017-05-24 | 关磊 | Anticorrosion surfacing method for inner wall of steel pipe welding seam |
| CN106964909B (en) * | 2017-03-22 | 2018-12-25 | 山东胜利长龙管道科技有限公司 | The manufacturing method of steel pipe is covered in pre- repaired mouth cermet |
-
1984
- 1984-01-20 JP JP725684A patent/JPS60151490A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60151490A (en) | 1985-08-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |