JPH09239559A - Electrode material for electric resistance welding - Google Patents
Electrode material for electric resistance weldingInfo
- Publication number
- JPH09239559A JPH09239559A JP4462696A JP4462696A JPH09239559A JP H09239559 A JPH09239559 A JP H09239559A JP 4462696 A JP4462696 A JP 4462696A JP 4462696 A JP4462696 A JP 4462696A JP H09239559 A JPH09239559 A JP H09239559A
- Authority
- JP
- Japan
- Prior art keywords
- resistance welding
- electric resistance
- electrode material
- weight
- electrode
- 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.)
- Withdrawn
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、Ｍｏ基合金から
なる電気抵抗溶接用電極材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric resistance welding electrode material made of a Mo-based alloy.
【０００２】[0002]
【従来の技術】従来、電気抵抗溶接用電極材としてＪＩ
Ｓ Ｚ ３２３４に規定される銅合金が使用されてい
る。しかし、この銅合金からなる抵抗溶接用電極材は高
温での強度および硬さが低く、特に厚さの厚い被溶接板
を高電圧および高加圧力をかけて電気抵抗溶接すると、
銅合金製電極は変形して使用寿命は短くなる。したがっ
て、一般に、高電圧で高加圧力を必要とする電気抵抗溶
接には粉末冶金法で成形されたタングステン電極材が使
用されている。2. Description of the Related Art Conventionally, JI has been used as an electrode material for electric resistance welding.
A copper alloy specified in S Z 3234 is used. However, the resistance welding electrode material made of this copper alloy has low strength and hardness at high temperatures, and in particular, when a thick plate to be welded is subjected to electric resistance welding by applying high voltage and high pressure,
The copper alloy electrode is deformed and its service life is shortened. Therefore, generally, a tungsten electrode material formed by a powder metallurgy method is used for electric resistance welding which requires high voltage and high pressure.
【０００３】[0003]
【発明が解決しようとする課題】しかし前記従来の粉末
冶金法で成形されたタングステン電極材は、早期にワー
クとの溶着が生じやすく、電極材とワークとの溶着が発
生すると、ナゲットが形成されなくなって、少ない電気
抵抗溶接の打点回数で抵抗溶接ができなくなるという課
題があった。However, the tungsten electrode material formed by the above-mentioned conventional powder metallurgy is likely to be welded to the work at an early stage, and when the welding of the electrode material and the work occurs, a nugget is formed. There is a problem that resistance welding cannot be performed with a small number of spots of electric resistance welding.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明者らは、
かかる観点から、高電圧および高加圧力をかけて電気抵
抗溶接を行っても電極が変形することがなく、さらに多
数回の電気抵抗溶接を行ってもワークとの溶着が発生す
ることのない電気抵抗溶接用電極材を得るべく研究を行
った結果、（ａ） Ｗ：１０〜２５重量％、Ｒｅ：５〜
３０重量％、Ｒｕ：１〜１０重量％を含有し、残りがＭ
ｏおよび不可避不純物からなる組成のＭｏ基合金からな
る電気抵抗溶接用電極材、（ｂ） Ｗ：１０〜２５重量
％、Ｒｅ：５〜３０重量％、Ｉｒ：１〜１０重量％を含
有し、残りがＭｏおよび不可避不純物からなる組成のＭ
ｏ基合金からなる電気抵抗溶接用電極材、（ｃ） Ｗ：
１０〜２５重量％、Ｒｅ：５〜３０重量％、Ｒｕ：１〜
１０重量％、Ｉｒ：１〜１０重量％を含有し、残りがＭ
ｏおよび不可避不純物からなる組成のＭｏ基合金からな
る電気抵抗溶接用電極材は、従来のタングステンＷ電極
材よりも、高電圧および高加圧力を必要とする電気抵抗
溶接において、ワークとの溶着が発生しにくく、したが
ってナゲットが形成されて電気抵抗溶接が行うことがで
きなくなるまでの抵抗溶接打点回数が著しく増加すると
いう知見を得たのである。Means for Solving the Problems Accordingly, the present inventors have:
From this point of view, even if the electric resistance welding is performed by applying a high voltage and a high pressure, the electrode is not deformed, and even if the electric resistance welding is performed a number of times, the welding with the work does not occur. As a result of conducting research to obtain an electrode material for resistance welding, (a) W: 10 to 25% by weight, Re: 5 to
30% by weight, Ru: 1 to 10% by weight, the balance M
(b) W: 10 to 25% by weight, Re: 5 to 30% by weight, Ir: 1 to 10% by weight, and The rest of the composition is composed of Mo and unavoidable impurities.
Electrode resistance welding electrode material composed of o-based alloy, (c) W:
10-25% by weight, Re: 5-30% by weight, Ru: 1-
10 wt%, Ir: 1 to 10 wt%, balance M
The electrode material for electric resistance welding made of a Mo-based alloy having a composition of o and unavoidable impurities is more likely to be welded to a work in electric resistance welding that requires higher voltage and higher pressing force than conventional tungsten W electrode materials. It has been found that the number of resistance welding spots is significantly increased until the nugget is formed and electric resistance welding cannot be performed.
【０００５】この発明は、かかる知見にもとづいてなさ
れたものであって、（１） Ｗ：１０〜２５重量％、Ｒ
ｅ：５〜３０重量％、Ｒｕ：１〜１０重量％を含有し、
残りがＭｏおよび不可避不純物からなる組成のＭｏ基合
金からなる電気抵抗溶接用電極材、（２） Ｗ：１０〜
２５重量％、Ｒｅ：５〜３０重量％、Ｉｒ：１〜１０重
量％を含有し、残りがＭｏおよび不可避不純物からなる
組成のＭｏ基合金からなる電気抵抗溶接用電極材、
（３） Ｗ：１０〜２５重量％、Ｒｅ：５〜３０重量
％、Ｒｕ：１〜１０重量％、Ｉｒ：１〜１０重量％を含
有し、残りがＭｏおよび不可避不純物からなる組成のＭ
ｏ基合金からなる電気抵抗溶接用電極材、に特徴を有す
るものである。The present invention has been made on the basis of such findings, and (1) W: 10 to 25% by weight, R
e: 5 to 30% by weight, Ru: 1 to 10% by weight,
Electrode resistance welding electrode material made of a Mo-based alloy having a composition in which the balance is Mo and inevitable impurities, (2) W: 10
An electrode material for electric resistance welding, which contains 25% by weight, Re: 5 to 30% by weight, Ir: 1 to 10% by weight, and the rest is a Mo-based alloy having a composition of Mo and inevitable impurities,
(3) M: W: 10 to 25% by weight, Re: 5 to 30% by weight, Ru: 1 to 10% by weight, Ir: 1 to 10% by weight, and the balance M consisting of Mo and inevitable impurities
This is characterized by an electric resistance welding electrode material made of an o-based alloy.
【０００６】この発明のＭｏ基合金からなる電気抵抗溶
接用電極材は、所定の成分組成となるようにＭｏ、Ｗ、
Ｒｅ、Ｒｕ、Ｉｒを真空雰囲気で電子ビーム溶解してボ
タンインゴットを製造し、さらにこのＭｏ基合金ボタン
インゴットを所定の寸法に研削加工することにより抵抗
溶接用電極を作製する。The electrode material for electric resistance welding made of the Mo-based alloy of the present invention has Mo, W, and
A button ingot is manufactured by melting Re, Ru, and Ir in an atmosphere of an electron beam to manufacture a button ingot, and the Mo-based alloy button ingot is ground to a predetermined size to manufacture a resistance welding electrode.
【０００７】この発明のＭｏ基合金からなる電気抵抗溶
接用電極材の成分組成を上記のごとく限定したのは、Ｍ
ｏにＷ：１０〜２５重量％およびＲｅ：５〜３０重量％
を含有させると、優れた高温特性および良好な加工性を
示す三元Ｍｏ基合金が得られ、この三元Ｍｏ基合金にさ
らにＲｕを添加すると導電率が向上し、接触抵抗を低減
させるが、Ｒｕを１重量％未満添加しても所望の効果が
得られず、一方、Ｒｕを１０重量％を越えて添加すると
金属間化合物相を生成し、機械特性が低下するので好ま
しくない。したがってＲｕの含有量を１〜１０重量％に
定めた。The component composition of the electric resistance welding electrode material made of the Mo-based alloy of the present invention is limited to the above-mentioned reason.
O: W: 10 to 25% by weight and Re: 5 to 30% by weight
By containing, a ternary Mo-based alloy exhibiting excellent high-temperature characteristics and good workability is obtained. If Ru is further added to this ternary Mo-based alloy, the conductivity is improved and the contact resistance is reduced. If Ru is added in an amount of less than 1% by weight, the desired effect cannot be obtained. On the other hand, if Ru is added in an amount of more than 10% by weight, an intermetallic compound phase is formed and mechanical properties are deteriorated, which is not preferable. Therefore, the content of Ru is set to 1 to 10% by weight.
【０００８】また、三元Ｍｏ基合金にさらにＩｒを添加
すると導電率および耐高温酸化性を向上させるが、Ｉｒ
を１重量％未満添加しても所望の効果が得られず、一
方、Ｉｒを１０重量％を越えて添加すると有害なＴＣＰ
相を生成し、特性が低下するので好ましくない。したが
ってＩｒの含有量を１〜１０重量％に定めた。Further, if Ir is further added to the ternary Mo-based alloy, the conductivity and the high temperature oxidation resistance are improved.
Addition of less than 1% by weight does not give the desired effect, while addition of more than 10% by weight of Ir causes harmful TCP
This is not preferable because it produces a phase and deteriorates the characteristics. Therefore, the Ir content is set to 1 to 10% by weight.
【０００９】この発明のＭｏ基合金からなる電気抵抗溶
接用電極材の成分組成の一層好ましい範囲は、Ｗ：１５
〜２０重量％、Ｒｅ：５〜１５重量％、Ｒｕ：１〜５重
量％、Ｉｒ：１〜５重量％の範囲である。A more preferable range of the component composition of the electrode material for electric resistance welding comprising the Mo-based alloy of the present invention is W: 15.
˜20 wt%, Re: 5 to 15 wt%, Ru: 1 to 5 wt%, Ir: 1 to 5 wt%.
【００１０】[0010]
【発明の実施の形態】原料として、純度：３Ｎ程度の市
販のＷ、Ｒｅ、Ｒｕ、Ｉｒを用意し、これら原料を配合
した後、回転式の水冷銅ハースを持つ２ガン式２００Ｋ
Ｗの電子ビーム溶解炉に装入し、１０-6Ｔｏｒｒの真空
雰囲気中で装入原料を全面溶解し、出来るだけ溶融プー
ルを大きくとって溶解を６回繰り返すことによりＭｏ基
母合金を作製した。BEST MODE FOR CARRYING OUT THE INVENTION As raw materials, commercially available W, Re, Ru, and Ir having a purity of about 3N are prepared, and these raw materials are mixed, and then a two-gun type 200K having a rotary water-cooled copper hearth is used.
A Mo-based master alloy was prepared by charging a W electron beam melting furnace, melting the charging raw material entirely in a vacuum atmosphere of 10 -6 Torr, taking a large melting pool as much as possible, and repeating melting 6 times. .
【００１１】得られたＭｏ基母合金を粉砕して溶解原料
とし、この溶解原料をＭｏ基母合金の製造と同じ製造条
件で各回ごとに試料を反転させながら６回の本溶解を行
い、表１〜表２に示される成分組成を有するボタンイン
ゴットを作製することにより本発明Ｍｏ基合金電気抵抗
溶接用電極材（以下、本発明電極材という）１〜１３お
よび比較Ｍｏ基合金電気抵抗溶接用電極材（以下、比較
電極材という）１〜７を製造した。さらに同じ寸法を有
する従来のタングステン電気抵抗溶接用電極材（以下、
従来電極材という）を用意した。The obtained Mo-based master alloy was crushed to be a melting raw material, and the melting raw material was subjected to six times of main melting under the same manufacturing conditions as the manufacturing of the Mo-based master alloy while inverting the sample each time. 1 to 1 for producing Mo-based alloy electric resistance welding of the present invention (hereinafter referred to as the present invention electrode material) 1 to 13 and comparative Mo-based alloy electric resistance welding by producing button ingots having the composition shown in Table 2 Electrode materials (hereinafter referred to as comparative electrode materials) 1 to 7 were manufactured. Furthermore, the conventional tungsten electric resistance welding electrode material having the same dimensions (hereinafter,
Conventional electrode material) was prepared.
【００１２】これら本発明電極材１〜１３、比較電極材
１〜７および従来電極材を切削加工して先端溶接部径：
１０ｍｍ、外径：１５ｍｍ、高さ：１５ｍｍの寸法を有
する電極を作製し、この電極を用い、溶接電流：７Ｋ
Ａ、加圧力：２００ｋｇ／ｃｍ 2 の条件で厚さ：２ｍｍ
の溶融亜鉛メッキ鋼板の電気抵抗溶接を行い、電極とワ
ークとの溶着が発生してナゲットが形成されなくなるま
での抵抗溶接限界打点回数（以下、単に限界打点回数と
いう）を測定し、その結果を表１および表２に示した。These electrode materials 1 to 13 of the present invention and comparative electrode materials
1 to 7 and conventional electrode material are cut and processed, and tip welded part diameter:
Has dimensions of 10 mm, outer diameter: 15 mm, height: 15 mm
We made an electrode to be used, and using this electrode, welding current: 7K
A, pressure force: 200 kg / cm TwoThickness: 2mm
Performs electric resistance welding of the hot-dip galvanized steel sheet of
Until the nugget no longer forms due to welding
Resistance welding limit number of points (hereinafter, simply
Was measured, and the results are shown in Table 1 and Table 2.
【００１３】[0013]
【表１】 [Table 1]
【００１４】[0014]
【表２】 （＊印は、この発明の条件から外れた値を示す。）[Table 2] (* Indicates a value outside the conditions of the present invention.)
【００１５】表１および表２に示される結果から、本発
明電極材１〜１３は、いずれも比較電極材１〜７および
従来電極材に比べて、限界打点回数が多く、したがっ
て、抵抗溶接用電極材として優れた寿命を有することが
分かる。From the results shown in Tables 1 and 2, the electrode materials 1 to 13 of the present invention have a larger number of critical hit points than the comparative electrode materials 1 to 7 and the conventional electrode materials, and therefore, for resistance welding. It can be seen that it has an excellent life as an electrode material.
【００１６】[0016]
【発明の効果】上述のように、この発明のＭｏ基合金電
気抵抗溶接用電極材は、従来よりも長期に亘って使用で
きるところから、抵抗溶接作業の効率化を計ることがで
き、機械産業に優れた効果をもたらすものである。As described above, the electrode material for electric resistance welding of Mo-based alloy of the present invention can be used for a longer period of time than the conventional one, so that the efficiency of resistance welding work can be improved, and It brings an excellent effect on.
Claims (3)
重量％、Ｒｕ：１〜１０重量％を含有し、残りがＭｏお
よび不可避不純物からなる組成のＭｏ基合金からなるこ
とを特徴とする電気抵抗溶接用電極材。1. W: 10 to 25% by weight, Re: 5 to 30
%, Ru: 1 to 10% by weight, and the rest is made of a Mo-based alloy having a composition of Mo and unavoidable impurities.
重量％、Ｉｒ：１〜１０重量％を含有し、残りがＭｏお
よび不可避不純物からなる組成のＭｏ基合金からなるこ
とを特徴とする電気抵抗溶接用電極材。2. W: 10 to 25% by weight, Re: 5 to 30
%, Ir: 1 to 10% by weight, and the balance being an Mo-based alloy having a composition of Mo and unavoidable impurities.
重量％、Ｒｕ：１〜１０重量％、Ｉｒ：１〜１０重量％
を含有し、残りがＭｏおよび不可避不純物からなる組成
のＭｏ基合金からなることを特徴とする電気抵抗溶接用
電極材。3. W: 10 to 25% by weight, Re: 5 to 30
% By weight, Ru: 1 to 10% by weight, Ir: 1 to 10% by weight
An electrode material for electric resistance welding, characterized in that it comprises a Mo-based alloy having a composition containing Mo and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4462696A JPH09239559A (en) | 1996-03-01 | 1996-03-01 | Electrode material for electric resistance welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4462696A JPH09239559A (en) | 1996-03-01 | 1996-03-01 | Electrode material for electric resistance welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09239559A true JPH09239559A (en) | 1997-09-16 |
Family
ID=12696646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4462696A Withdrawn JPH09239559A (en) | 1996-03-01 | 1996-03-01 | Electrode material for electric resistance welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09239559A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3118339A1 (en) * | 2015-07-17 | 2017-01-18 | Gesellschaft für Wolfram Industrie mbH | Molybdenum alloy, electrode comprising a molybdenum alloy, and use of an electrode |
| CN106756378A (en) * | 2016-12-17 | 2017-05-31 | 重庆材料研究院有限公司 | A kind of high temperature resistant Flouride-resistani acid phesphatase nuclear field alloy and preparation method and purposes |
-
1996
- 1996-03-01 JP JP4462696A patent/JPH09239559A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3118339A1 (en) * | 2015-07-17 | 2017-01-18 | Gesellschaft für Wolfram Industrie mbH | Molybdenum alloy, electrode comprising a molybdenum alloy, and use of an electrode |
| CN106756378A (en) * | 2016-12-17 | 2017-05-31 | 重庆材料研究院有限公司 | A kind of high temperature resistant Flouride-resistani acid phesphatase nuclear field alloy and preparation method and purposes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030506 |