JPH0318546B2 - - Google Patents
Info
- Publication number
- JPH0318546B2 JPH0318546B2 JP22389586A JP22389586A JPH0318546B2 JP H0318546 B2 JPH0318546 B2 JP H0318546B2 JP 22389586 A JP22389586 A JP 22389586A JP 22389586 A JP22389586 A JP 22389586A JP H0318546 B2 JPH0318546 B2 JP H0318546B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- corrosion
- welding
- metal
- resistant
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 41
- 239000002184 metal Substances 0.000 claims description 41
- 238000003466 welding Methods 0.000 claims description 26
- 238000005260 corrosion Methods 0.000 claims description 22
- 230000007797 corrosion Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 229910000978 Pb alloy Inorganic materials 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、耐食性金属と鉛ないし鉛合金との
肉盛り溶接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 overlay welding of a corrosion-resistant metal and lead or a lead alloy.
（従来技術）
従来、チタン、タンタルおよびニオブなどの高
耐食性金属に対して鉛ないし鉛合金は接合が不可
能であるとされて来た。(Prior Art) Conventionally, it has been thought that lead or lead alloys cannot be joined to highly corrosion-resistant metals such as titanium, tantalum, and niobium.
近年、この種の耐食性金属が耐食用化学機器を
はじめとして広い分野にわたつて使用されるよう
になり、たとえば不溶性アノードとして上記のよ
うな耐食性金属を鉛または鉛合金電極に対する非
放電面保護被膜として利用する試みがなされてき
たが、かような耐食性金属と鉛ないし鉛合金（以
下単に鉛系金属という）とは接合性に難があり、
実際に利用されるまでには至つていない。 In recent years, this type of corrosion-resistant metal has come to be used in a wide range of fields, including corrosion-resistant chemical equipment. For example, the above-mentioned corrosion-resistant metal is used as an insoluble anode as a non-discharge surface protective coating for lead or lead alloy electrodes. Attempts have been made to use lead-based metals, but there are difficulties in bonding these corrosion-resistant metals with lead or lead alloys (hereinafter simply referred to as lead-based metals).
It has not yet reached the point where it is actually used.
しかしながらかような耐食性金属のもつ特性、
すなわちすぐれた耐食性はいうに及ばず、めつき
液中で不動態化して電流の流れをしや断する特性
を利用できれば、不溶性アノードの裏面や側面か
らの放電をなくすことができるので電圧降下や迷
走電流によるロスを防止でき、省エネルギの面で
多大の効果が期待される。 However, the characteristics of such corrosion-resistant metals,
In other words, not only does it have excellent corrosion resistance, but if it can be used to passivate in the plating solution and interrupt the flow of current, it is possible to eliminate discharge from the back and sides of the insoluble anode, reducing voltage drop and Loss due to stray current can be prevented, and a great effect in terms of energy saving is expected.
この点、発明者らは先に、上記の問題を解決す
るものとして、特開昭57−184577号公報におい
て、耐食性金属母材の表面にTIG溶接により、鉛
系金属の肉盛りを施すに当り、肉盛り溶接に引続
いて該肉盛り部に加熱処理を施すと共に、肉盛
り、加熱さらに冷却と続く一連の処理を不活性ガ
スのシールド下に行うことからなる肉盛り接合法
を提案し、かかる肉盛り接合法の開発により、従
来不可能視されていたチタン、タンタルおよびニ
オブの如き耐食性金属と鉛系金属との接合が可能
になつた。 In this regard, the inventors previously proposed in Japanese Unexamined Patent Application Publication No. 184577/1983 that a lead-based metal is overlaid on the surface of a corrosion-resistant metal base material by TIG welding in order to solve the above problem. proposed a build-up bonding method that involves applying heat treatment to the build-up part following build-up welding, and performing a series of treatments including build-up, heating, and cooling under an inert gas shield; The development of such a build-up bonding method has made it possible to bond lead-based metals with corrosion-resistant metals such as titanium, tantalum, and niobium, which had previously been considered impossible.
（発明が解決しようとする問題点）
この発明は、上記の肉盛り接合法をさらに改
良、発展させたもので、耐食性金属と鉛系金属と
の接合強度のより一層の増強と共に、工程の簡略
化を併せて実現した、新規な肉盛り溶接法を提案
することを目的とする。(Problems to be Solved by the Invention) This invention further improves and develops the build-up bonding method described above, and further increases the bonding strength between a corrosion-resistant metal and a lead-based metal, and simplifies the process. The purpose of this study is to propose a new overlay welding method that also achieves
（問題点を解決するための手段）
すなわちこの発明は、耐食性金属の表面に、
TIG溶接によつて鉛系金属を肉盛りするに当り、
溶接棒として、上記耐食性金属と同材質の溶加材
を包含する鉛溶加棒を用いることを特徴とする、
耐食性金属と鉛ないし鉛合金との肉盛り溶接法で
である。(Means for solving the problem) In other words, the present invention provides a method for solving the problem by applying
When overlaying lead-based metal by TIG welding,
A lead filler rod containing a filler material of the same material as the corrosion-resistant metal is used as the welding rod,
This is a build-up welding method between a corrosion-resistant metal and lead or lead alloy.
以下この発明を具体的に説明する。 This invention will be specifically explained below.
さてこの発明では、溶接棒として、耐食性金属
と同材質の溶加材を包含する鉛り溶加棒を用いる
が、この発明において“包含する”とは、第１図
ｂに示すように、耐食性金属と同材質の細線２を
鉛系金属３で包み込む場合だけでなく、同図ａに
示すように、鉛系金属棒１の側面（この例では断
面が半月形の鉛系金属棒１の弦側）に該細線２を
添着する場合も含むものとする。 Now, in this invention, a lead filler rod that includes a filler material of the same material as the corrosion-resistant metal is used as a welding rod. In addition to wrapping the thin wire 2 made of the same material as the metal with the lead-based metal 3, as shown in Figure a, the side of the lead-based metal rod 1 (in this example, the string of the lead-based metal rod 1 with a half-moon cross section) This also includes the case where the thin wire 2 is attached to the side).
また実際の溶接に際しては、第２図に示したよ
うに、鉛溶加棒中の耐食性金属細線２を、鉛系金
属１の端部よりも５〜６mm突出させおき、溶接時
に第３図に示したように、先ず細線２を加熱して
熱の中心を細線とし、その予熱によつて鉛系金属
を溶解させるようにすることが、接合強度の向上
の上でより有利である。 In addition, during actual welding, as shown in Figure 2, the corrosion-resistant thin metal wire 2 in the lead filler rod is made to protrude 5 to 6 mm beyond the end of the lead-based metal 1, and as shown in Figure 3 during welding. As shown, it is more advantageous in terms of improving the bonding strength to first heat the thin wire 2 so that the center of the heat is in the thin wire, and to melt the lead-based metal by the preheating.
なおこの発明において、TIG溶接は常法に従つ
て行えばよく、前掲特開昭57−184577号公報に開
示の方法のように、溶接後肉盛り部に加熱処理な
どの後処理を施す必要はない。 In addition, in this invention, TIG welding can be performed according to a conventional method, and there is no need to perform post-treatment such as heat treatment on the built-up part after welding, as in the method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 57-184577. do not have.
（作用）
この発明に従い、耐食性金属の表面に鉛系金属
を肉盛り溶接するに当り、鉛系金属からなる溶接
棒に耐食性金属と同材質の溶加材を添えることに
よつて接合強度が向上する理由は、次のとおりと
考えられる。(Function) According to the present invention, when overlaying a lead-based metal on the surface of a corrosion-resistant metal, the joint strength is improved by adding a filler metal made of the same material as the corrosion-resistant metal to a welding rod made of the lead-based metal. The reasons for this are considered to be as follows.
テイグ溶接時において、その電極であるタング
ステン部分が鉛溶加棒のTi線部分に向けられそ
の集中熱の余熱により鉛溶解接合がソフトに行わ
れることにより、酸化や不純物の混入が防止され
順調な肉盛りが持続され接合強度の向上につなが
るものと考へられる。 During Teig welding, the tungsten part of the electrode is directed at the Ti wire part of the lead filler rod, and the residual heat of the concentrated heat causes lead melting to occur softly, preventing oxidation and contamination of impurities and resulting in a smooth process. It is thought that the build-up is sustained and leads to an improvement in joint strength.
（実施例）
６mmの鉄板の全面に１mm厚のチタン板を被覆し
たクラツド板の表面に、次の条件下に鉛系金属の
肉盛り溶接を施した。(Example) Overlay welding of lead-based metal was performed on the surface of a clad plate, which was a 6 mm iron plate covered with a 1 mm thick titanium plate, under the following conditions.
(1) 使用溶接棒
前掲第１図ａに示した形状になる溶接棒を用
いた。ここに細線２としては1.6mmφのチタン
線を、また鉛系金属１としてはPb：95％、
Sn：５％の組成になる合金を用いた。(1) Welding rod used A welding rod having the shape shown in Figure 1a above was used. Here, the thin wire 2 is a 1.6 mmφ titanium wire, and the lead-based metal 1 is Pb: 95%,
An alloy having a composition of Sn: 5% was used.
(2) 使用溶接機
直流溶接機 電流：90A
溶接速度 ：159.6mm／min
Arガス ：７／min
かくして得られたチタンクラツド−鉛複合材
を、幅：40mmの引張り試験片に切出し、JISに
規定する引張り試験を行つたところ、引張り強
さは4.4Kgｆ／mm2であり、前掲特開昭57−
184577号公報に従い得られたもののそれが約
2.5Kgｆ／mm2であつたのと比べ、格段に向上し
ていた。(2) Welding machine used: DC welding current: 90A Welding speed: 159.6mm/min Ar gas: 7/min The thus obtained titanium clad-lead composite was cut into tensile test pieces with a width of 40mm, and the test pieces were tested according to JIS standards. When a tensile test was conducted, the tensile strength was 4.4Kgf/mm 2 , and the tensile strength was found to be 4.4Kgf/mm 2
The one obtained according to Publication No. 184577 is approximately
Compared to 2.5Kgf/mm 2 , it was much improved.
以上実施例では、チタンクラツド板の全面に鉛
系金属を肉盛り溶接する場合について主に説明し
たが、この発明はこれだけに限るものではなく、
電極面板としての鉛板本体は鉛板溶着とし、その
周囲にのみ上記の方法に準じて肉盛り溶接を施す
場合もこの発明の範囲に包含されるものである。 In the above embodiments, the case where lead-based metal is overlay welded on the entire surface of a titanium clad plate has been mainly explained, but the present invention is not limited to this.
The scope of the present invention also includes the case where the main body of the lead plate serving as the electrode face plate is welded to a lead plate, and only the periphery of the main body is welded overlay in accordance with the above method.
（発明の効果）
かくしてこの発明によれば、チタンやタンタ
ル、ニオブなどの耐食性金属と鉛系金属とを、処
理工程の有利な簡略化の下に、高い接合強度で溶
接接合することができる。(Effects of the Invention) Thus, according to the present invention, a corrosion-resistant metal such as titanium, tantalum, or niobium can be welded to a lead-based metal with high bonding strength while advantageously simplifying the processing steps.
第１図ａ，ｂはそれぞれ、この発明に用いて好
適な溶接棒の断面図、第２図は、実使用に供して
好適な溶接棒の斜視図、第３図は、実際のTIG溶
接実施要領の説明図である。
１……半月形の鉛系金属、２……耐食性金属と
同材質の細線、３……鉛系金属。
Figures 1a and b are sectional views of a welding rod suitable for use in the present invention, Figure 2 is a perspective view of a welding rod suitable for actual use, and Figure 3 is an actual TIG welding process. It is an explanatory diagram of the procedure. 1...Half-moon-shaped lead-based metal, 2...Thin wire made of the same material as the corrosion-resistant metal, 3...Lead-based metal.
Claims (1)
いし鉛合金を肉盛りするに当り、 溶接棒として、上記耐食性金属と同材質の溶加
材を包含する鉛溶加棒を用いることを特徴とす
る、耐食性金属と鉛ないし鉛合金との肉盛り溶接
法。[Scope of Claims] 1. A lead filler rod containing a filler material of the same material as the corrosion-resistant metal as a welding rod when depositing lead or lead alloy on the surface of a corrosion-resistant metal by TIG welding. A method of overlay welding between a corrosion-resistant metal and lead or lead alloy, characterized by the use of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22389586A JPS6380974A (en) | 1986-09-24 | 1986-09-24 | Build-up welding method of corrosion resistant metal and lead or lead alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22389586A JPS6380974A (en) | 1986-09-24 | 1986-09-24 | Build-up welding method of corrosion resistant metal and lead or lead alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6380974A JPS6380974A (en) | 1988-04-11 |
| JPH0318546B2 true JPH0318546B2 (en) | 1991-03-12 |
Family
ID=16805388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22389586A Granted JPS6380974A (en) | 1986-09-24 | 1986-09-24 | Build-up welding method of corrosion resistant metal and lead or lead alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6380974A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0277599A (en) * | 1988-09-12 | 1990-03-16 | Nippon Steel Corp | Insoluble electrode for continuously electrogalvanizing metallic strip and production thereof |
-
1986
- 1986-09-24 JP JP22389586A patent/JPS6380974A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6380974A (en) | 1988-04-11 |
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