JPH04157072A - Different material joining method - Google Patents
Different material joining methodInfo
- Publication number
- JPH04157072A JPH04157072A JP27564990A JP27564990A JPH04157072A JP H04157072 A JPH04157072 A JP H04157072A JP 27564990 A JP27564990 A JP 27564990A JP 27564990 A JP27564990 A JP 27564990A JP H04157072 A JPH04157072 A JP H04157072A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- titanium
- steel
- joining
- welded
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 95
- 238000005304 joining Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 27
- 238000003466 welding Methods 0.000 claims abstract description 62
- 239000010936 titanium Substances 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 42
- 229910017944 Ag—Cu Inorganic materials 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910017539 Cu-Li Inorganic materials 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims 3
- 229910017755 Cu-Sn Inorganic materials 0.000 claims 1
- 229910017927 Cu—Sn Inorganic materials 0.000 claims 1
- 229910008365 Li-Sn Inorganic materials 0.000 claims 1
- 229910006759 Li—Sn Inorganic materials 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 abstract description 22
- 239000011261 inert gas Substances 0.000 abstract description 10
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 9
- 239000010953 base metal Substances 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 238000005253 cladding Methods 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 12
- 230000013011 mating Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000002648 laminated material Substances 0.000 description 5
- 229910000765 intermetallic Inorganic materials 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 210000000569 greater omentum Anatomy 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 229910002593 Fe-Ti Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、チタンと鋼材との異材接合あるいはチタンク
ラッド鋼どうしを接合（以下異材接合とよぶ。）する方
法すなわちチタンの異材接合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 joining dissimilar materials between titanium and steel or joining titanium clad steel together (hereinafter referred to as "dissimilar joining"), that is, a method for joining dissimilar materials of titanium. It is.
（従来の技術）
チタンは、チタン類似の金属とは接合はできるが、例え
ば、チタンクラッド鋼の接合においてチタンと母材であ
る炭素鋼あるいは低合金鋼をＡｒ。(Prior Art) Titanium can be joined to metals similar to titanium, but for example, when joining titanium clad steel, titanium and base metal carbon steel or low alloy steel are bonded by Ar.
Ｈｅ等の不活性ガスを用いてアーク溶接すると、溶融金
属中にＦｅが多量に溶込み、Ｆｅ−Ｔｉの金属間化合物
やＴｉＣあるいはＴｉＮ等の化合物か多量に形成され、
これが溶接金属を脆化させるために接合は不可能といっ
てもよい。When arc welding is performed using an inert gas such as He, a large amount of Fe dissolves into the molten metal, forming a large amount of Fe-Ti intermetallic compounds and compounds such as TiC or TiN.
This embrittles the weld metal, making joining impossible.
従って、従来チタンと鋼材あるいはチタンクラッド鋼ど
うしを接合するいわゆる異材接合の場合には、真空炉内
蝋付けにて接合するか、拡散接合のように金属間化合物
を形成しないインサート材を挿入して接合している。そ
のために大きさの制約があるのと同時に現場での接合が
できないとか、電子ビーム溶接のように貴金属類を使用
するために高価になるのとともに接合強度が低い等の欠
点がある。Therefore, in the case of so-called dissimilar metal joining, which conventionally involves joining titanium and steel or titanium clad steel, the joining is done by brazing in a vacuum furnace, or by inserting an insert material that does not form intermetallic compounds as in diffusion joining. It is joined. For this reason, there are size constraints, and at the same time, there are disadvantages such as the inability to join on-site, and the use of precious metals like electron beam welding, which is expensive and has low joint strength.
第５図（ａ）、 （ｂ）はＦｅを主体とする母材２の上
面に商用Ｔｉ合わせ材３を結合したチタンクラッド鋼１
の接合方法を示しているが、第５図（ａ）はクラツド鋼
１の両端部４、を溶接してから、合わせ材３と同質のＴ
ｉスペーサ材６を、切り欠き部に載置し、合わせ材３と
このスペーサ材６を溶接７′ して、継手部を構成して
いる。しかし、この継手部において、母材端縁４の表面
と、スペーサ材６との間には、空隙１０ができこの空隙
が接合強度を低下させる。一方合わせ材３と、スペーサ
材６の溶接に際し、クラツド鋼母材２の一部が溶融し、
これが溶接部７の溶着金属中に混入してＴｉｃ、ＴｉＮ
等の化合物やＦｅ−Ｔｉ金属間化合物の脆弱層を生成せ
しめ、これが原因となってわれることか起こる。Figures 5(a) and 5(b) show a titanium clad steel 1 in which a commercial Ti lamination material 3 is bonded to the upper surface of a base material 2 mainly composed of Fe.
Fig. 5(a) shows a joining method in which both ends 4 of the clad steel 1 are welded, and then a T
The i-spacer material 6 is placed in the notch, and the mating material 3 and this spacer material 6 are welded 7' to form a joint. However, in this joint portion, a gap 10 is formed between the surface of the base material edge 4 and the spacer material 6, and this gap reduces the joint strength. On the other hand, when welding the mating material 3 and the spacer material 6, a part of the clad steel base material 2 melts,
This mixes into the weld metal of the welding part 7 and causes Tic, TiN.
This causes the formation of a weak layer of compounds such as Fe-Ti intermetallic compounds, and this may cause damage.
このような溶接脆弱層の形成を防ぐため、第５図（ｂ）
に示すようにスペーサ材６は、合わせ材３と溶接せず、
合わせ材３間を被覆載置するに止め、その上部に当て板
材８で覆うと共にこれと合わせ材３とを重ね隅肉溶接部
９を形成して接合する継手としている。In order to prevent the formation of such a weak weld layer, as shown in Fig. 5(b)
As shown in the figure, the spacer material 6 is not welded to the joining material 3
The space between the laminated materials 3 is merely covered and placed, and the upper part thereof is covered with a patch plate material 8, and this and the laminated material 3 are overlapped to form a fillet welded portion 9 to form a joint.
当て板材８は、合わせ材３、スペーサ材６と同様チタン
で構成されており、従って、重ね隅肉溶接部９における
前記の脆化層の問題は起きない。The caul plate material 8 is made of titanium like the laminated material 3 and the spacer material 6, and therefore, the above-mentioned problem of the brittle layer in the lap fillet welded portion 9 does not occur.
しかしこの継手は合わせ材の上に押さえ板を溶接するた
めに、溶接構造が複雑になるのと共に曲げ加工によって
空隙部か拡大されるので加工を伴う構造物には適用でき
ない。However, since this joint welds the presser plate onto the laminated material, the welding structure becomes complicated and the gap is enlarged by bending, so it cannot be applied to structures that require processing.
なお、チタンクラッド鋼の溶接方法は特開平２−５２１
７６号公報に開示されている。The welding method for titanium clad steel is disclosed in Japanese Patent Application Laid-Open No. 2-521.
It is disclosed in Publication No. 76.
（発明が解決しようとする課題）
本発明は、上記した問題点を解決するものであって、チ
タンと鋼材あるいはチタンクラッド鋼どうしなどの異材
接合するに際して、炉内接合等の特別な工程を採用する
ことなく、簡易な方法で脆化の無いしかも耐食性に優れ
たＡｒ、Ｈｅ等の不活性ガスを用いたアーク溶接法を提
供することを目的とする。(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems, and employs a special process such as in-furnace joining when joining dissimilar materials such as titanium and steel or titanium clad steel together. It is an object of the present invention to provide an arc welding method using an inert gas such as Ar or He that is simple and free from embrittlement and has excellent corrosion resistance.
（問題を解決するだめの手段）
本発明は、上記の目的を達成するために以下の構成を要
旨とする。すなわち本発明は、チタンと鋼材との接合あ
るいはチタンクラッド鋼どうしなどを接合するに際し、
Ａｇ−Ｃｕを主成分とする溶材で、Ａｒ、Ｈｅ等の不活
性ガスを用いてＴＩＧ溶接することを特徴とするチタン
と鋼材との異材接合方法である。また上記溶材にはＬｉ
。(Means for solving the problem) The present invention has the following configuration in order to achieve the above object. In other words, the present invention provides the following advantages when joining titanium and steel materials or joining titanium clad steels, etc.
This is a method for joining dissimilar materials between titanium and steel, which is characterized by TIG welding using a welding material mainly composed of Ag-Cu and an inert gas such as Ar or He. In addition, the above welding material contains Li
.
Ｓｎの何れかまたは両方を添加してもよい。Either or both of Sn may be added.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
（作 用）
チタンは、耐食性に優れているため、化学プラントや航
空機部品などに使用され、その用途は拡大しつつあるが
、高価であることが実用上の制約となっている。従って
腐食雰囲気にはチタン、その反面は強度部材としての役
割を保持するために、低合金鋼、高張力鋼などよりなる
クラツド鋼が用いられる。使用するチタンはＪＩＳに規
定されている１種〜３種の何れでもよい。クラツド鋼は
、上記のように種々の機器、部品などに使用されるがこ
れらの構成部材とするにあたり、上述したように脆性が
なく、接合強度のある接合部を得ることは重要である。(Function) Because titanium has excellent corrosion resistance, it is used in chemical plants and aircraft parts, and its uses are expanding, but its high price is a practical constraint. Therefore, titanium is used in the corrosive atmosphere, while clad steel made of low alloy steel, high tensile strength steel, etc. is used to maintain its role as a strength member. The titanium used may be any one to three types specified in JIS. Clad steel is used for various devices and parts as described above, and in making these components, it is important to obtain joints that are free from brittleness and have high joint strength, as described above.
すなわちチタンクラッド鋼を接合する場合には、母材（
軟鋼あるいは合金鋼）に開先を設けて母材とうしを同質
の溶材を用いて溶接し、この溶接部分では、母材と、合
わせ材（Ｔ１）どうしあるいは合わせ材（Ｔｉ）と同質
のスペーサ材とをＡｇ −Ｃｕを主成分とする溶材を用
いて前記ＴＩＧ溶接をする。また、これらの溶接部端面
においては、例えば母材とスペーサ材との間隙をシール
するために、両者間に亘ってＡｇ−Ｃｕを主成分とする
溶材で前記ＴＩＧ法でシール溶接するものである。In other words, when joining titanium clad steel, the base material (
A groove is provided in the base material (mild steel or alloy steel), and the base metal and the weld are welded using the same quality welding metal, and in this welded part, the base metal and the mating material (T1) or a spacer of the same quality as the mating material (Ti) are welded. The above-mentioned TIG welding is performed using a welding material mainly composed of Ag--Cu. In addition, on the end faces of these welded parts, for example, in order to seal the gap between the base metal and the spacer material, seal welding is performed between the two using the TIG method using a welding material mainly composed of Ag-Cu. .
すなわちこのような場合は、何れも鋼母材とチタンの異
材接合となる。In other words, in all such cases, the steel base material and titanium are joined as dissimilar materials.
本発明において接合に使用される溶材としては、前記の
ようにＡｇ−Ｃｕを主成分とするものを用いるものであ
り、例えばＪＩＳ Ｚ ３２６１に規定されているＢＡ
ｇ８あるいはＢＡｇ −８Ａ （Ｌｉ ：０．１５〜０
．３％添加）系材料でよい。これらの材料にはＳｎを含
有してもよく、さらにＺｎを作業性を害しない程度であ
れば添加することはできるが多量に添加するとヒュウム
の発生が多くなるのでその添加量は少量に制限される。The welding material used for bonding in the present invention is one whose main component is Ag-Cu as described above, for example, BA specified in JIS Z 3261.
g8 or BAg-8A (Li: 0.15-0
．． 3% addition) type material may be used. These materials may contain Sn, and furthermore, Zn can be added to an extent that does not impair workability, but if added in a large amount, fume generation will increase, so the amount added should be limited to a small amount. Ru.
ＡｇおよびＳｎは溶融点を低く抑さえ、ＦｅおよびＴｊ
との反応を防ぎ、Ｃｕは継手強度を向上させ、Ｌｉは軟
鋼とのなじみを良くするために用いる。Ag and Sn keep the melting point low, while Fe and Tj
Cu is used to improve joint strength, and Li is used to improve compatibility with mild steel.
本発明はＴＩＧ溶接法を用い積極的に溶融接合するもの
で、Ａｇ−Ｃｕを主成分とする溶材は金属間化合物を作
らないのと低融点のためにＴＩＧ溶接法を用いるが、Ｔ
ＩＧ溶接法は加熱速度が早いので、溶融金属の溶けわか
れがない。The present invention uses the TIG welding method to actively melt and join, and the TIG welding method is used because the weld material mainly composed of Ag-Cu does not create intermetallic compounds and has a low melting point.
Since the IG welding method has a fast heating rate, there is no melting of the molten metal.
また、この種の溶材で溶接する場合は開先形状はできる
だけ小さくする方が接合強度の面より好ましい。Further, when welding with this type of weld metal, it is preferable to make the groove shape as small as possible from the viewpoint of joint strength.
（実 施 例）
図面は本発明の溶接法により得た溶接部の実施例を示す
ものである。(Example) The drawings show an example of a welded part obtained by the welding method of the present invention.
第１図（ａ）はチタンクラッド鋼１を接合した状態を示
し、母材（軟鋼）２と２をＴＩＧ溶接で多層溶接し溶接
部５を形成した後、合わせ材３と同質のＴｉスペーサ材
６を切り欠き部に載置し合わせ材３，３とこのスペーサ
材６をＡｇ−Ｃｕを主成分とする溶材でＡｒ、Ｈｅ等の
不活性ガスを用いてＴＩＧ溶接し、溶接部７を形成する
。FIG. 1(a) shows a state in which titanium clad steel 1 is joined. After base metals (mild steel) 2 and 2 are multi-layer welded by TIG welding to form a welded part 5, a Ti spacer material of the same quality as the joining material 3 is welded. 6 is placed in the notch, and the joining materials 3, 3 and this spacer material 6 are TIG welded using a welding material mainly composed of Ag-Cu using an inert gas such as Ar or He to form a welded portion 7. do.
第１図（ｂ）は、スペーサ材６と合わせ材３，３とをＡ
ｇ−Ｃｕを主成分とする溶材でＡｒ、Ｈｅ等の不活性ガ
スを用いてＴＩＧ溶接し、溶接部７を形成後、その上部
に当て板材８で覆うと共にこれと合わせ材３とを重ね隅
肉溶接部９を形成して接合する継手である。FIG. 1(b) shows the spacer material 6 and the mating materials 3, 3
After forming the welded part 7 by TIG welding with a welding material mainly composed of g-Cu using an inert gas such as Ar or He, the welded part 7 is covered with a patch plate material 8, and this and the laminated material 3 are overlapped at the corner. This is a joint in which a flesh weld 9 is formed and joined.
当て板材８は、合わせ材３に重ね隅肉溶接し隅肉溶接部
９を形成する。しかしこの継手はスペーサ材６の上に当
て板材８を溶接するために、図示のような継手端面側に
は、母材（軟鋼）２とスペーサ材６との間に空隙部１０
が形成されるため、これをふさぐためにシール溶接をす
る必要かあるが、これは異材接合となるために本発明で
はＡｇ−Ｃｕを主成分とする溶材でＡｒ、Ｈｅ等の不活
性ガスを用いてＴＩＧ溶接し、異材シール溶接部１４を
形成する。さらにスペーサ材６と当て板材８との間に形
成される空隙部１０ａにはスペーサ材６と当て板材８と
同様のＴｊ溶溶材用いてＴＩＧ溶接し、シール溶接部１
５を形成する方法を採用している。The backing plate material 8 is overlapped and fillet welded to the mating material 3 to form a fillet welded portion 9. However, in this joint, since the patch plate material 8 is welded onto the spacer material 6, there is a gap 10 between the base material (mild steel) 2 and the spacer material 6 on the end surface side of the joint as shown.
is formed, so it is necessary to perform seal welding to block this, but since this is a joining of dissimilar materials, in the present invention, inert gas such as Ar or He is used with a welding material mainly composed of Ag-Cu. TIG welding is performed using the same method to form a dissimilar material seal welded portion 14. Furthermore, the gap 10a formed between the spacer material 6 and the caul plate material 8 is TIG-welded using the same Tj welding material as the spacer material 6 and the caul plate material 8, and the seal welded portion 1
5 is adopted.
第２図（ａ）は、鋼製反応容器等で耐食性の要求される
場合に内張り用としてチタン１２を使用し、このチタン
と鋼材の異材接合状態を示したものである。すなわち、
第２図（ｂ）の要部説明図に示すように、母材２の内面
に裏当て材としてのチタンの合わせ材３をＡｇ −Ｃｕ
−Ｌｉ −Ｓｎを主成分とする溶材で、Ａｒ、Ｈ６
等の不活性ガス雰囲気でＴＩＧ溶接法を用いて隅肉溶接
をし、チタン３と鋼材２との異材接合による隅肉溶接部
１１を形成し、そのチタン合わせ材３の上層部に内張り
のチタン１２を同質のＴ１溶材を用いてＴＩＧ溶接で突
合せ溶接を行って突合せ溶接部１３を形成する方法を示
している。FIG. 2(a) shows a state in which titanium 12 is used as a lining material in a case where corrosion resistance is required for a steel reaction vessel, etc., and the state in which titanium and steel are joined together. That is,
As shown in the explanatory view of the main part in FIG.
-Li -Sn-based welding material, Ar, H6
fillet welding is performed using the TIG welding method in an inert gas atmosphere such as 12 is butt welded by TIG welding using a homogeneous T1 welding material to form a butt welded portion 13.
第３図（ａ）は、チタンクラッド鋼板をバイブに加工し
、軟鋼配管２（ａ）と成形したチタンクラッド鋼管１と
の突合せ接合した状態を示したもので、同図（ｂ）に示
すように、クラツド材の端部面４でチタン合わせ材３と
母材２とをＡｇ−Ｃｕ−Ｌｉを主成分とする溶材でＡｒ
、Ｈｅ等の不活性ガスを用いてＴＩＧ溶接した後、母材
（軟鋼）２をＴＩＧ溶接で多層溶接し溶接部５を形成す
る方法を示している。Figure 3 (a) shows a state in which a titanium clad steel plate is processed into a vibrator, and a mild steel pipe 2 (a) and a formed titanium clad steel pipe 1 are butt-jointed, as shown in Figure 3 (b). At the end surface 4 of the cladding material, the titanium mating material 3 and the base material 2 are bonded with Ar using a welding material mainly composed of Ag-Cu-Li.
, a method is shown in which TIG welding is performed using an inert gas such as He, and then multilayer welding is performed on a base material (mild steel) 2 by TIG welding to form a welded portion 5.
第４図は、チタンクラッド鋼板をバイブに加工し、これ
を海洋における飛沫・干満部の防食法として使用した際
の鋼管杭との突合せ状況を示す。Figure 4 shows the situation in which a titanium clad steel plate is processed into a vibrator and the vibrator is butted against a steel pipe pile when used as a corrosion prevention method for spray and tidal areas in the ocean.
すなわち海洋構造物脚柱１５に巻回する場合の本発明の
使用例であり、これを海水スプラッシュゾーンに設置す
るクラツド鋼板の接合に使用することにより、脚柱の波
による浸食を保護し、その長寿命化に役立つことができ
る。図示のようにチタンクラッド鋼１を脚柱１５に接合
する場合に、構造部材１５とクラツド鋼母材２をＴＩＧ
溶接で多層隅肉溶接し溶接部５を形成した後、チタンの
合わせ材３と同質のＴｉスペーサ材６を切り欠き部に載
置し、合わせ材３とこのスペーサ材６を同質のＴｉ溶溶
材ＴＩＧ溶接７後、これらの溶接部端面を母材２と、合
わせ材およびスペーサ材に亘って、Ａｇ −ｃｕ −Ｓ
ｎを主成分とする溶材でＡｒ。In other words, this is an example of the use of the present invention in the case of wrapping it around a pedestal 15 of an offshore structure.By using this to join a clad steel plate installed in a seawater splash zone, the pedestal can be protected from erosion by waves, and its It can help extend the lifespan. When joining the titanium clad steel 1 to the pillar 15 as shown in the figure, the structural member 15 and the clad steel base material 2 are
After welding multi-layer fillet welding to form a welded part 5, a Ti spacer material 6 of the same quality as the titanium composite material 3 is placed in the notch, and the composite material 3 and this spacer material 6 are made of a Ti melted material of the same quality. After TIG welding 7, the end faces of these welded parts are coated with Ag-cu-S over the base metal 2, the joining material, and the spacer material.
Ar is a welding material whose main component is n.
Ｈｅ等の不活性ガスを用いてＴＩＧ溶接をして異材シー
ル溶接部１４を形成する。この結果、前記溶接部端面は
、スペーサ材と母材間に間隙か構成されていてもこれを
完全にシールし、溶接部に上記間隙からの海水浸入によ
る脆化や腐食を防止できる。TIG welding is performed using an inert gas such as He to form a dissimilar material seal welded portion 14. As a result, even if a gap is formed between the spacer material and the base metal, the end face of the welded part can completely seal the gap, thereby preventing embrittlement and corrosion due to seawater intrusion into the welded part from the gap.
このように本発明では溶材にＡｇ−Ｃｕを主成分とする
材料を使用するためＡｇを主成分とする溶着成分が得ら
れＦｅの溶造はあるものの少量でありＡｇリッチの溶着
金属が得られる。また、本発明は溶融溶接されるために
蝋接に比較して接合強度が高く、現場での溶接施工が可
能である。In this way, in the present invention, since a material containing Ag-Cu as the main component is used as the welding material, a welding component containing Ag as the main component is obtained, and although Fe is dissolved in a small amount, an Ag-rich welded metal can be obtained. . Furthermore, since the present invention is melt-welded, the joint strength is higher than that of brazing, and welding can be performed on-site.
（発明の効果）
以上のように、本発明法によれば、チタンと鋼材との異
材接合あるいはチタンクラッド鋼どうしを接合するにお
いてネックとされていた溶接部の脆化や耐食性の低下が
ない溶着金属が、従来と同様なアーク溶接で簡単に得ら
れその工業的な効果は極めて大きい。(Effects of the Invention) As described above, according to the method of the present invention, welding can be achieved without embrittlement of the welded part or decrease in corrosion resistance, which has been a problem in joining dissimilar materials between titanium and steel or joining titanium clad steel together. Metals can be easily obtained by conventional arc welding, and its industrial effects are extremely large.
【図面の簡単な説明】
第１図（ａ）、 （ｂ）は本発明法によるチタンクラッ
ド鋼の溶接部を示す概略図であり、第２図（ａ）は、チ
タンと鋼材の溶接法を示す概略図、同図（ｂ）は、同（
ａ）図の一部拡大説明図であり、第３図（ａ）は、チタ
ンクラッド鋼管と炭素鋼鋼管との溶接法を示す断面斜視
図、同図（ｂ）は同（ａ）図の一部拡大説明図であり、
第４図（ａ）は、炭素鋼構造物にチタンクラッド鋼管を
巻回し、鋼との異材溶接法を示す概略図、同図（ｂ）は
同図（ａ）の一部拡大説明図であり、第５図（ａ）、
（ｂ）は従来のチタンクラッド鋼の接合法を示す断面図
である。
１・・・クラツド鋼板 ２・・・母 材２（ａ）
・・・軟鋼配管 ３・・・合わせ材４・・・クラ
ツド鋼１の両端部
５・・・クラッド鋼板軟鋼部母材多層盛溶接部６・・・
スペーサ材
７．７′・・・スペーサ材溶接部
８・・・当て板材 ９・・・重ね隅肉溶接部
１０・・空 隙１１・・・隅肉溶接[Brief Description of the Drawings] Figures 1 (a) and (b) are schematic diagrams showing a welded part of titanium clad steel by the method of the present invention, and Figure 2 (a) shows a welding method for titanium and steel. The schematic diagram shown in the same figure (b) is the same (
Fig. 3(a) is a cross-sectional perspective view showing a welding method for titanium clad steel pipes and carbon steel pipes, and Fig. 3(b) is a partially enlarged explanatory view of Fig. 3(a). It is an enlarged explanatory diagram of the part.
FIG. 4(a) is a schematic diagram showing a dissimilar metal welding method for winding a titanium clad steel pipe around a carbon steel structure and welding it to steel, and FIG. 4(b) is a partially enlarged explanatory diagram of FIG. 4(a). , Figure 5(a),
(b) is a cross-sectional view showing a conventional titanium clad steel joining method. 1... Clad steel plate 2... Base material 2(a)
... Mild steel piping 3 ... Laminating material 4 ... Both ends of clad steel 1 5 ... Clad steel plate mild steel base material multilayer welded part 6 ...
Spacer material 7.7'... Spacer material welded part 8... Back plate material 9... Lap fillet welded part 10... Gap 11... Fillet welded
Claims (1)
合するに際し、Ａｇ−Ｃｕを主成分とする溶材を用い、
ＴＩＧアーク溶接法で溶接することを特徴とする異材接
合方法。 ２）Ａｇ−Ｃｕ−Ｌｉおよび不可避不純物からなる溶材
を用いてＴＩＧアーク溶接することを特徴とする請求項
１記載の異材接合方法。 ３）Ａｇ−Ｃｕ−Ｓｎおよび不可避不純物からなる溶材
を用いてＴＩＧアーク溶接することを特徴とする請求項
１記載の異材接合方法。 ４）Ａｇ−Ｃｕ−Ｌｉ−Ｓｎおよび不可避不純物からな
る溶材を用いてＴＩＧアーク溶接することを特徴とする
請求項１記載の異材接合方法。[Claims] 1) When joining titanium and steel or titanium clad steel to each other, using a welding material mainly composed of Ag-Cu,
A method for joining dissimilar materials characterized by welding using TIG arc welding. 2) The method for joining dissimilar materials according to claim 1, characterized in that TIG arc welding is performed using a weld metal consisting of Ag-Cu-Li and unavoidable impurities. 3) The method for joining dissimilar materials according to claim 1, characterized in that TIG arc welding is performed using a weld metal consisting of Ag-Cu-Sn and unavoidable impurities. 4) The method for joining dissimilar materials according to claim 1, characterized in that TIG arc welding is performed using a weld metal consisting of Ag-Cu-Li-Sn and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27564990A JPH07236B2 (en) | 1990-10-15 | 1990-10-15 | Dissimilar material joining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27564990A JPH07236B2 (en) | 1990-10-15 | 1990-10-15 | Dissimilar material joining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04157072A true JPH04157072A (en) | 1992-05-29 |
| JPH07236B2 JPH07236B2 (en) | 1995-01-11 |
Family
ID=17558403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27564990A Expired - Lifetime JPH07236B2 (en) | 1990-10-15 | 1990-10-15 | Dissimilar material joining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07236B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741829A (en) * | 2015-03-12 | 2015-07-01 | 西安理工大学 | Cu-Ag-Cr welding wire for titanium-pipeline-steel welding and preparing method thereof |
| CN104741826A (en) * | 2015-03-12 | 2015-07-01 | 西安理工大学 | Cu-Ag-Mo welding wire for titanium-pipeline-steel welding and preparing method thereof |
| CN105382381A (en) * | 2015-12-21 | 2016-03-09 | 安徽马钢工程技术集团有限公司 | Welding method of resistance strip of electrothermal furnace |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475709A (en) * | 2016-12-14 | 2017-03-08 | 西安理工大学 | A kind of welding wire for welding titanium steel composite board transition zone and preparation method thereof |
-
1990
- 1990-10-15 JP JP27564990A patent/JPH07236B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741829A (en) * | 2015-03-12 | 2015-07-01 | 西安理工大学 | Cu-Ag-Cr welding wire for titanium-pipeline-steel welding and preparing method thereof |
| CN104741826A (en) * | 2015-03-12 | 2015-07-01 | 西安理工大学 | Cu-Ag-Mo welding wire for titanium-pipeline-steel welding and preparing method thereof |
| CN105382381A (en) * | 2015-12-21 | 2016-03-09 | 安徽马钢工程技术集团有限公司 | Welding method of resistance strip of electrothermal furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07236B2 (en) | 1995-01-11 |
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