JPH0549385B2 - - Google Patents
Info
- Publication number
- JPH0549385B2 JPH0549385B2 JP59117095A JP11709584A JPH0549385B2 JP H0549385 B2 JPH0549385 B2 JP H0549385B2 JP 59117095 A JP59117095 A JP 59117095A JP 11709584 A JP11709584 A JP 11709584A JP H0549385 B2 JPH0549385 B2 JP H0549385B2
- Authority
- JP
- Japan
- Prior art keywords
- lining
- base material
- base
- pipe
- pieces
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はライニング管の製造方法に係り、特
に、あらかじめ筒状に形成されたライニング材を
多数の母材片で覆い、該母材片を互いに溶接して
一体化させるようにした製造方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a lined pipe, and in particular, covers a lining material previously formed in a cylindrical shape with a large number of base material pieces, and covers the base material pieces. The present invention relates to a manufacturing method in which the parts are welded together and integrated.
一般に、原子力プラント、化学プラント等に用
いられる配管のうち、腐蝕性流体を輸送する配管
には、炭素鋼、ステンレス鋼などからなる母材の
内面を耐触性のライニング材で被覆したいわゆる
ライニング管が使用されている。
In general, among piping used in nuclear power plants, chemical plants, etc., piping that transports corrosive fluids is so-called lined pipe, which has a base material made of carbon steel, stainless steel, etc. whose inner surface is covered with a corrosion-resistant lining material. is used.
ところで、高度の耐触性が要求される配管で
は、チタン、タンタルなどの耐触性に富んだ材料
を用いるが材料費が高いためこれら材料をライニ
ング材として使用することが望まれている。しか
し、これらの材料には、炭素鋼、ステンレス鋼と
溶接することが困難であるという問題がある。 Incidentally, for piping that requires a high degree of corrosion resistance, materials with high corrosion resistance such as titanium and tantalum are used, but because of the high cost of materials, it is desired to use these materials as lining materials. However, these materials have the problem that they are difficult to weld with carbon steel and stainless steel.
すなわち、炭素鋼、ステンレス鋼からなる母材
にチタン、タンタル等のライニング材を溶接しよ
うとすると、互いに溶融し合わないためワレが発
生するか、又は溶融した母材成分がライニング材
に溶け込んでライニング材の耐触性が著るしく損
なわれるという問題が生ずる。 In other words, when attempting to weld a lining material such as titanium or tantalum to a base material made of carbon steel or stainless steel, cracks may occur because they do not melt together, or the molten base material components may melt into the lining material and cause the lining to deteriorate. A problem arises in that the corrosion resistance of the material is significantly impaired.
本発明は上記事情に鑑みてなされたもので、ラ
イニング材の耐触性を損なうことなくライニング
管を製造することが可能な製造方法を提供するこ
とを目的とする。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a manufacturing method capable of manufacturing a lined pipe without impairing the corrosion resistance of the lining material.
上記目的を達成するために、本発明は、一連の
筒状に形成されたライニング材に、その周方向も
しくは長さ方向に分割された複数の母材片を被せ
た後に、ライニング材との間に裏当金等を介在さ
せた状態で前記母材片を互いに溶接するようにし
たものである。
In order to achieve the above object, the present invention covers a series of cylindrical lining materials with a plurality of base material pieces divided in the circumferential direction or length direction, and then The base metal pieces are welded together with a backing metal or the like interposed therebetween.
第１図ないし第３図は本発明の適用して製造さ
れたライニング管の第１実施例を示すものであつ
て、このライニング管は、チタン、タンタル等の
耐触性金属からなる筒状のライニング材１の外周
に、炭素鋼などからなる母材２を半径方向に間隔
をおいて設けた構造となつている。前記母材２
は、半割円筒状の母材片３，３を溶接部４を介し
て一体に溶接してなるもので、前記ライニング材
１を保護してライニング管の機械的強度を維持す
る機能を有している。
1 to 3 show a first embodiment of a lined pipe manufactured by applying the present invention. It has a structure in which base materials 2 made of carbon steel or the like are provided on the outer periphery of a lining material 1 at intervals in the radial direction. The base material 2
is formed by welding half cylindrical base metal pieces 3, 3 together via a welding part 4, and has the function of protecting the lining material 1 and maintaining the mechanical strength of the lining pipe. ing.
次いで上記ライニング管の製造方法を工程順に
説明する。 Next, the method for manufacturing the above-mentioned lining pipe will be explained step by step.
ライニング材１を所定形状（この第１実施例
ではエルボ状）の筒状に形成する（ライニング
材形成工程）。 The lining material 1 is formed into a cylindrical shape having a predetermined shape (an elbow shape in this first embodiment) (lining material forming step).
例えば市販のエルボを縦割り状に分割して母
材片３を製造する。 For example, the base material pieces 3 are manufactured by vertically dividing a commercially available elbow.
ライニング材１に母材片３を被せる（母材被
覆工程）とともに、母材片３，３の継目の部分
の内側にセラミツクテープ、非鉄ストリツプな
どの耐熱性材料からなる裏当金５を挿入する。 At the same time as covering the lining material 1 with the base material piece 3 (base material covering process), a backing metal 5 made of a heat-resistant material such as ceramic tape or non-ferrous strip is inserted inside the joint between the base material pieces 3 and 3. .
裏当金５を挿入した状態で母材片３を一体に
溶接する（母材溶接工程）。 The base metal pieces 3 are welded together with the backing metal 5 inserted (base metal welding process).
裏当金５を取り除く。（残す場合もある。）
なお、このライニング管に液体を流通させた場
合、ライニング材が内圧によつて半径方向外方に
押し広げられ、母材の内面に密着して一体化され
る。 Remove backing money 5. (It may be left behind.) Note that when a liquid is passed through this lining pipe, the lining material is pushed outward in the radial direction by the internal pressure, and is closely adhered to and integrated with the inner surface of the base material.
次いで、第４図ないし第６図は本発明を適用し
て製造されたライニング管の第２実施例を示すも
ので、このライニング管のライニング材６は、短
管７を溶接部８を介して複数接続することにより
一連の筒状に形成され、一方、母材９は、半割パ
イプ状の母材片１０を溶接部１１および１２を介
して周方向および長さ方向に多数接続した構造と
されている。 Next, FIGS. 4 to 6 show a second embodiment of a lined pipe manufactured by applying the present invention, and the lining material 6 of this lined pipe is made by attaching a short pipe 7 to a welded part 8. The base material 9 is formed into a series of cylindrical shapes by connecting a plurality of them, while the base material 9 has a structure in which a large number of half pipe-shaped base material pieces 10 are connected in the circumferential direction and the length direction via welded parts 11 and 12. has been done.
次いで、上記ライニング管の製造方法を工程順
に説明する。 Next, the method for manufacturing the above-mentioned lining pipe will be explained step by step.
複数の短管７を溶接部８を介して接続するこ
とにより、一連の筒状のライニング材６を形成
する（ライニング材料形成工程）。 A series of cylindrical lining materials 6 is formed by connecting a plurality of short pipes 7 via welded portions 8 (lining material forming step).
母材１０をライニング材６に被せる（母材被
覆工程）とともに、第５図に示すように、母材
片１０の内側に設けられた溝部１３に前記第１
実施例のものと同一材質の裏当金１４を嵌め込
み、この状態で母材片１０を周方向に互いに連
結するとともに、第６図に示すように、母材１
０の内周に設けられた溝部１５に裏当金１６を
嵌め込んでこの状態で母材片１０を溶接して
（母材溶接工程）長さ方向に連結する。 At the same time as covering the base material 10 on the lining material 6 (base material covering step), as shown in FIG.
A backing metal 14 made of the same material as that of the embodiment is fitted, and in this state, the base material pieces 10 are connected to each other in the circumferential direction, and as shown in FIG.
A backing metal 16 is fitted into a groove 15 provided on the inner periphery of the base metal piece 10, and in this state, the base metal pieces 10 are welded (base metal welding process) to connect them in the length direction.
次いで、第７図ないし第９図は本発明を適用し
て製造されたライニング管の第３実施例を示すも
ので、このライニング管は、前記第２実施例と同
様にして形成されたライニング材６を半割パイプ
状の母材片１０Ａで覆い、母材片１０Ａの間の継
目に沿つて設けた継手材１７，１８をそれぞれ母
材片１０Ａの表面に溶接するようにした構造とな
つている。 Next, FIGS. 7 to 9 show a third embodiment of a lining pipe manufactured by applying the present invention, and this lining pipe is made of a lining material formed in the same manner as in the second embodiment. 6 is covered with a half pipe-shaped base material piece 10A, and joint materials 17 and 18 provided along the joint between the base metal pieces 10A are each welded to the surface of the base metal piece 10A. There is.
すなわち、前記継手材１７は、母材９の長さ方
向に沿つて配設されるもので、第８図に示すよう
に、溶接部１９，１９を介して母材片１０Ａに固
着され、一方、継手材１８は、母材９の周方向に
沿つて設けられて、第９図に示すように溶接部２
０，２０を介して母材片１０Ａに固着されてい
る。 That is, the joint material 17 is disposed along the length direction of the base material 9, and as shown in FIG. , the joint material 18 is provided along the circumferential direction of the base material 9, and as shown in FIG.
It is fixed to the base material piece 10A via wires 0 and 20.
このように、母材材１０Ａを継手材１７もしく
は１８を介して接続することにより、接続部の強
度を補うことができる。また、溶接によつて溶融
する部分とライニング材との間に母材片１０Ａが
介在しているから、この母材１０Ａが前記第１、
第２実施例の裏当金と同様の機能を果すことによ
り、ライニング材６が保護される。 In this way, by connecting the base material 10A via the joint material 17 or 18, the strength of the connection portion can be supplemented. Further, since the base material piece 10A is interposed between the part to be melted by welding and the lining material, this base material 10A is
The lining material 6 is protected by performing the same function as the backing metal in the second embodiment.
さらに、第１０図および第１１図は本発明を適
用して製造されたライニング管の第４実施例を示
すもので、母材片１０Ｂの表面に長さ方向および
周方向に沿つてそれぞれ溝２１，２２を設け、こ
の溝２１，２２にそれぞれ継手材２３，２４を埋
込み、これらを溶接部２５，２６を介して母材片
１０ｂに溶接するようにしたものである。 Furthermore, FIGS. 10 and 11 show a fourth embodiment of a lining pipe manufactured by applying the present invention, in which grooves 21 are formed on the surface of the base material piece 10B along the length direction and the circumferential direction, respectively. , 22 are provided, joint materials 23 and 24 are embedded in these grooves 21 and 22, respectively, and these are welded to the base metal piece 10b via welding portions 25 and 26.
このように、溝部２１，２２内に継手材２３，
２４を埋込むことにより、溶接強度を高めるとと
もに、母材９の表面からの継手材２３，２４の突
出量を減少させることができる。 In this way, the joint material 23,
By embedding 24, it is possible to increase the welding strength and reduce the amount of protrusion of the joint materials 23 and 24 from the surface of the base material 9.
なお、前記第２ないし第４実施例において、母
材の長さ方向に沿う溶接線と周方向に沿う溶接線
との交差を避けるため、各母材片を長さ方向もし
くは周方向に相対的に位置をずらして配置するよ
うにしてもよい。 In addition, in the second to fourth embodiments, in order to avoid intersection of the weld line along the length direction of the base material and the weld line along the circumferential direction, each base metal piece is set relative to each other in the length direction or circumferential direction. It may be arranged by shifting the position.
以上の説明で明らかなように、本発明は次のよ
うな効果を奏する。
As is clear from the above description, the present invention has the following effects.
(イ) 母材片の溶接部とライニング材との間に裏当
金、あるいは母材片の一部が介在しているか
ら、母材片を溶接する際の溶着金属がライニン
グ材に混入せず、ライニング材の耐触性を損な
う現象が防止される。(b) Since a backing metal or a part of the base metal piece is interposed between the welded part of the base metal piece and the lining material, there is no possibility that the weld metal that is used when welding the base metal piece gets mixed into the lining material. First, phenomena that impair the contact resistance of the lining material are prevented.
(ロ) 内側のライニング材が完成した後に外側の母
材を形成するから、母材を形成する前に、ライ
ニング材の溶接部等の検査（例えば超音波探傷
試験等）を実施することができ、ライニング管
の健全性が高められる。(b) Since the outer base material is formed after the inner lining material is completed, it is possible to inspect the welded parts of the lining material (for example, ultrasonic flaw detection tests, etc.) before forming the base material. , the integrity of the lining pipe is enhanced.
第１図ないし第３図は本発明を適用して製造さ
れたライニング管の第１実施例を示すもので、第
１図は縦断面図、第２図は第１図の−線に沿
う矢視図、第３図は第２図鎖線で示す部分の拡
大図、第４図ないし第６図はライニング管の第２
実施例を示すもので、第４図は縦断面図、第５図
は第４図の−線に沿う拡大矢視図、第６図は
第４図鎖線で示す部分の拡大図、第７図ないし
第９図はライニング管の第３実施例を示すもの
で、第７図は縦断面図、第８図は第７図の−
線に沿う矢視図、第９図は第７図鎖線で示す部
分の拡大図、第１０図および第１１図はライニン
グ管の第４実施例を示すもので、第１０図は横断
面図、第１１図は縦断面図である。
１，６……ライニング材、２……母材、３……
母材片、５，１４，１６……裏当金、７……短
管、９……母材、１０，１０Ａ，１０Ｂ……母材
片、１７，１８，２３，２４……継手材。
1 to 3 show a first embodiment of a lining pipe manufactured by applying the present invention, FIG. 1 is a longitudinal sectional view, and FIG. 3 is an enlarged view of the part indicated by the chain line in FIG. 2, and FIGS. 4 to 6 are the second part of the lining pipe.
4 is a longitudinal sectional view, FIG. 5 is an enlarged view taken along the - line in FIG. 4, FIG. 6 is an enlarged view of the part indicated by the chain line in FIG. 4, and FIG. 9 to 9 show a third embodiment of the lining pipe, FIG. 7 is a longitudinal sectional view, and FIG. 8 is a cross-sectional view of FIG. 7.
9 is an enlarged view of the portion indicated by the chain line in FIG. 7, FIGS. 10 and 11 show a fourth embodiment of the lining pipe, and FIG. 10 is a cross-sectional view. FIG. 11 is a longitudinal sectional view. 1, 6...Lining material, 2...Base material, 3...
Base material piece, 5, 14, 16... Backing metal, 7... Short pipe, 9... Base material, 10, 10A, 10B... Base material piece, 17, 18, 23, 24... Joint material.
Claims (1)
るライニング管の製造方法において、ライニング
材を一連の筒状に形成するライニング材形成工程
と、該ライニング材形成工程によつて形成された
ライニング材にその周方向もしくは長さ方向に多
数分割された母材片を被せる母材被覆工程と、該
母材被覆工程においてライニング材に被覆した複
数の母材片を、ライニング材との間に裏当金等を
介在させた状態で互いに溶接する母材溶接工程と
からなることを特徴とするライニング管の製造方
法。1. A method for manufacturing a lined pipe in which the inner surface of a cylindrical base material is covered with a lining material, including a lining material forming step of forming a lining material into a series of cylindrical shapes, and a lining formed by the lining material forming step. A base material covering step in which a plurality of base material pieces divided into multiple pieces are covered in the circumferential direction or length direction of the material, and a plurality of base material pieces coated on the lining material in the base material covering step are placed between the lining material and the backing material. A method for manufacturing a lining pipe, comprising a step of welding base metals together with a metal interposed therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11709584A JPS60261688A (en) | 1984-06-07 | 1984-06-07 | Manufacturing method of lining pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11709584A JPS60261688A (en) | 1984-06-07 | 1984-06-07 | Manufacturing method of lining pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60261688A JPS60261688A (en) | 1985-12-24 |
| JPH0549385B2 true JPH0549385B2 (en) | 1993-07-26 |
Family
ID=14703270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11709584A Granted JPS60261688A (en) | 1984-06-07 | 1984-06-07 | Manufacturing method of lining pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60261688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2366293A1 (en) | 2006-10-23 | 2011-09-21 | Nestec S.A. | Taste and flavour modulation by biotransformation in milk products |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4151054B2 (en) * | 2005-08-31 | 2008-09-17 | 日栄動力工業株式会社 | Continuous repair method for large diameter pipes |
| JP5164012B2 (en) * | 2010-03-05 | 2013-03-13 | 株式会社石井鐵工所 | Seismic reinforcement structure for spherical tank legs |
| CN107191729A (en) * | 2017-07-18 | 2017-09-22 | 山东胜利长龙管道科技有限公司 | A kind of steel exempts from the manufacture method of interior corrosion-resistanting interpolating port bend pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5180633A (en) * | 1975-01-10 | 1976-07-14 | Shinku Yakin Kk | ta mataha ta gokinkuratsudokobuzaino setsugohoho |
| JPS60222682A (en) * | 1984-04-18 | 1985-11-07 | 株式会社 黒木工業所 | Corrosion-resistant steel pipe and manufacture thereof |
-
1984
- 1984-06-07 JP JP11709584A patent/JPS60261688A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5180633A (en) * | 1975-01-10 | 1976-07-14 | Shinku Yakin Kk | ta mataha ta gokinkuratsudokobuzaino setsugohoho |
| JPS60222682A (en) * | 1984-04-18 | 1985-11-07 | 株式会社 黒木工業所 | Corrosion-resistant steel pipe and manufacture thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2366293A1 (en) | 2006-10-23 | 2011-09-21 | Nestec S.A. | Taste and flavour modulation by biotransformation in milk products |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60261688A (en) | 1985-12-24 |
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