JPH11176268A - Joining structure of metal members of different kinds - Google Patents
Joining structure of metal members of different kindsInfo
- Publication number
- JPH11176268A JPH11176268A JP9342554A JP34255497A JPH11176268A JP H11176268 A JPH11176268 A JP H11176268A JP 9342554 A JP9342554 A JP 9342554A JP 34255497 A JP34255497 A JP 34255497A JP H11176268 A JPH11176268 A JP H11176268A
- Authority
- JP
- Japan
- Prior art keywords
- joining
- metal material
- metal materials
- copper
- metal
- 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.)
- Pending
Links
- 238000005304 joining Methods 0.000 title claims abstract description 103
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 50
- 239000007769 metal material Substances 0.000 claims description 100
- 238000003466 welding Methods 0.000 claims description 36
- 229910052782 aluminium Inorganic materials 0.000 claims description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 10
- 229910001080 W alloy Inorganic materials 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005219 brazing Methods 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 9
- 229910000599 Cr alloy Inorganic materials 0.000 description 6
- 239000000788 chromium alloy Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
- Contacts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、異なる特性を有す
る異種金属材料の接合構造に関し、さらに詳しくは電力
用遮断器に使用される通電接触子、あるいはアーク接触
子の接合構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure of dissimilar metal materials having different characteristics, and more particularly, to a joining structure of a current-carrying contact or an arc contact used in a power circuit breaker.
【０００２】[0002]
【従来の技術】従来、棒状または管状の異材継手の接合
には、摩擦圧接や拡散接合などが行われる。摩擦圧接の
例を、図１を用いて説明する。材料特性の異なる同径の
金属材料１および２を、圧接装置のチャックで掴み、一
方を回転させて接合すべき部分を摩擦エネルギーで加熱
し、軸方向の加圧力Ｐによりアプセット加圧して行う。
接合後の軸方向断面は、同径の金属材料１と２が接合さ
れ、それぞれの材料強度に応じてバリの量と形状が異な
った状況を呈する。2. Description of the Related Art Conventionally, rod-like or tubular joints of dissimilar materials are joined by friction welding or diffusion joining. An example of friction welding will be described with reference to FIG. Metal materials 1 and 2 having the same diameter and different material properties are gripped by a chuck of a pressure welding device, one of them is rotated to heat a portion to be joined by friction energy, and is subjected to upset pressing by an axial pressing force P.
In the axial cross section after the joining, the metal materials 1 and 2 having the same diameter are joined, and the amount and the shape of the burr are different depending on the strength of each material.
【０００３】従来の継手の接合においては、接合部材の
衝撃強度が低く、そのため、接合部の信頼性が低いこと
が問題である。この傾向は、摩擦圧接に限らず、冷間圧
接、熱間圧接、拡散接合、爆発圧接、鍛接、超音波接
合、ろう付け、はんだ付け、抵抗溶接、接着剤を用いる
接合のいずれの方法の異種材料間の接合構造においても
同様である。[0003] In joining conventional joints, there is a problem that the impact strength of the joining member is low, and therefore the reliability of the joining portion is low. This tendency is not limited to friction welding, but is different from cold welding, hot welding, diffusion welding, explosive welding, forging, ultrasonic welding, brazing, soldering, resistance welding, and joining using adhesives. The same applies to the joint structure between materials.
【０００４】そこで、従来、異種材料の摩擦圧接におい
ては、熱膨張係数の大きな材料の直径を他の材料のそれ
よりも大きくして接合することにより、接合界面に発生
する残留応力を緩和して接合強度を向上させている（特
開平６−４７５７０号公報）。また、アルミニウム材と
銅材の熱間圧接においては、アルミニウム材に開先角１
５度〜４５度の凸状にした銅材を突き合わせ通電加熱に
より接合し、引張り強度を向上させている（特開平４−
１４３０８５号公報）。また、セラミックスと金属との
接合においては、熱応力緩和のためにセラミックス部材
の接合界面の周縁部における一部と接合体表面とのなす
セラミックス構成角度を８０度以下又は、１００度以上
に設定する（特開平１−２８２１６６号公報）。さら
に，熱膨張率の異なる部材同士の接合においては、熱応
力緩和のために、熱膨張率の小さい部材の接合界面縁部
を接合界面方向に見て所定値以上の半径を有する曲面状
に形成している（特開平１−２８２１６７号公報）。Conventionally, in friction welding of dissimilar materials, a material having a large coefficient of thermal expansion has a larger diameter than that of another material and is joined, so that residual stress generated at a joining interface is relaxed. The bonding strength is improved (Japanese Patent Application Laid-Open No. 6-47570). In addition, in hot pressing of an aluminum material and a copper material, a groove angle of 1 mm is added to the aluminum material.
A copper material having a convexity of 5 to 45 degrees is butt-joined by electric current heating to improve the tensile strength (Japanese Patent Laid-Open No. Hei 4-
No. 143085). Further, in the joining of the ceramics and the metal, the ceramic forming angle between a part of the peripheral portion of the joining interface of the ceramic member and the surface of the joined body is set to 80 degrees or less or 100 degrees or more for thermal stress relaxation. (JP-A-1-282166). Furthermore, when joining members having different coefficients of thermal expansion, in order to relieve thermal stress, the joining interface edge of the member having a small coefficient of thermal expansion is formed into a curved surface having a radius equal to or larger than a predetermined value when viewed in the joining interface direction. (JP-A-1-282167).
【０００５】これら従来の方法は、いずれも残留応力緩
和、熱応力緩和、引張り強度向上を目的にした方法であ
って、接合部材の衝撃強度を高め、接合部の信頼性を高
める方法ではない。[0005] These conventional methods are all methods for the purpose of relaxation of residual stress, relaxation of thermal stress, and improvement of tensile strength, but are not methods of increasing the impact strength of a joining member and improving the reliability of a joining portion.
【０００６】[0006]
【発明が解決しようとする課題】以上述べたように、材
料特性の異なる異種材料の接合においては、接合条件の
最適化により、静的な継手強度に関しては、図４および
図５に示すように、問題は無い。すなわち、異種金属接
合部材の引張り強度は中心部と接合端部では変化がな
い。しかし、衝撃強度に関しては、図６および図７に示
すように、接合端部で著しい低下が現れて継手全体とし
て低いことが明らかであり、接合部材の低い衝撃強度が
問題であった。As described above, in the joining of dissimilar materials having different material characteristics, the static joint strength is reduced as shown in FIGS. 4 and 5 by optimizing the joining conditions. No problem. That is, the tensile strength of the dissimilar metal joining member does not change between the center portion and the joining end portion. However, regarding the impact strength, as shown in FIGS. 6 and 7, a remarkable decrease appeared at the joint end, and it was apparent that the joint as a whole was low, and the low impact strength of the joint member was a problem.
【０００７】そこで、本発明は、材料特性の異なる異種
金属材料の接合において、接合部材の衝撃強度を高め、
信頼性の高い接合構造を得ることを目的としている。In view of the above, the present invention has been made to improve the impact strength of a joining member when joining dissimilar metal materials having different material properties,
The purpose is to obtain a highly reliable bonding structure.
【０００８】[0008]
【課題を解決するための手段】本発明は、下記の事項を
その特徴としている。 （１） 一方の金属材料と、この金属材料より剛性の小
さい金属材料との接合において、前記一方の金属材料お
よび前記剛性の小さい金属材料の接合面端部で自由縁と
なす角度が共に９０度未満となるように設定したことを
特徴とする、異種金属材料の接合構造。 （２） 一方の金属材料と、この金属材料より剛性の小
さい金属材料との接合において、前記一方の金属材料ま
たは前記剛性の小さい金属材料の接合面端部で自由縁と
なす角度のいずれか一方が９０度の場合、残りの金属材
料の接合面端部での自由縁となす角度を９０度未満とな
るように設定したことを特徴とする、異種金属材料の接
合構造。The present invention has the following features. (1) In joining one metal material and a metal material having a lower rigidity than the metal material, the angles formed by the free edges at the ends of the joining surfaces of the one metal material and the metal material having a lower rigidity are both 90 degrees. A joining structure of dissimilar metal materials, wherein the joining structure is set to be less than. (2) In joining one metal material and a metal material having a lower rigidity than the metal material, one of an angle formed by a free edge at an end of the joining surface of the one metal material or the metal material having a lower rigidity. Is 90 degrees, the angle between the remaining metal material and the free edge at the end of the bonding surface is set to be less than 90 degrees.
【０００９】（３） 剛性の異なる異種金属材料の接合
手段が、摩擦圧接、冷間圧接、熱間圧接、拡散接合、爆
発圧接、鍛接、超音波接合、ろう付け、はんだ付け、抵
抗溶接、溶融金属注入、鋳継ぎ、接着剤を用いた接合の
いずれかの方法であることを特徴とする前記（１）また
は（２）に記載の異種金属材料の接合構造。 （４） 一方の金属材料が銅または銅合金であり、前記
金属材料より剛性の小さい金属材料がアルミニウムまた
はアルミニウム合金であることを特徴とする前記（１）
または（２）に記載の異種金属材料の接合構造。 （５） 一方の金属材料がチタンまたはチタン合金であ
り、前記金属材料より剛性の小さい金属材料がアルミニ
ウムまたはアルミニウム合金であることを特徴とする前
記（１）または（２）に記載の異種金属材料の接合構
造。(3) The means for joining dissimilar metal materials having different stiffness include friction welding, cold welding, hot welding, diffusion welding, explosive welding, forging, ultrasonic welding, brazing, soldering, resistance welding, and melting. The structure for joining dissimilar metal materials according to (1) or (2), wherein the method is any one of metal injection, casting, and joining using an adhesive. (4) The above (1), wherein one of the metal materials is copper or a copper alloy, and the metal material having a lower rigidity than the metal material is aluminum or an aluminum alloy.
Or the joining structure of dissimilar metal materials according to (2). (5) The dissimilar metal material according to (1) or (2), wherein one of the metal materials is titanium or a titanium alloy, and the metal material having a lower rigidity than the metal material is aluminum or an aluminum alloy. Joint structure.
【００１０】（６） 一方の金属材料が鋼であり、前記
金属材料より剛性の小さい金属材料がアルミニウムまた
はアルミニウム合金であることを特徴とする前記（１）
または（２）に記載の異種金属材料の接合構造。 （７） 一方の金属材料が鋼であり、前記金属材料より
剛性の小さい金属材料が銅または銅合金であることを特
徴とする前記（１）または（２）に記載の異種金属材料
の接合構造。 （８） 電力用遮断器に使用される通電接触子の接触子
接点部が銅または銅合金であり、前記接触子接点部以外
がアルミニウムまたはアルミニウム合金から構成される
前記（１）または（２）に記載の接合構造を採用したこ
とを特徴とする異種金属材料の接合構造。(6) The method according to (1), wherein the one metal material is steel, and the metal material having a lower rigidity than the metal material is aluminum or an aluminum alloy.
Or the joining structure of dissimilar metal materials according to (2). (7) The joining structure of dissimilar metal materials according to (1) or (2), wherein the one metal material is steel, and the metal material having a lower rigidity than the metal material is copper or a copper alloy. . (8) The contact (1) or (2), wherein the contact contact portion of the current-carrying contact used for the power circuit breaker is made of copper or a copper alloy, and other than the contact contact portion is made of aluminum or an aluminum alloy. A joining structure of dissimilar metal materials, characterized by employing the joining structure described in (1).
【００１１】（９） 電力用遮断器に使用されるアーク
接触子の接触子接点部が銅−タングステン合金であり、
前記接触子接点部以外が鉄、鉄合金または銅合金のいず
れか１種から構成される前記（１）または（２）に記載
の接合構造を採用したことを特徴とする異種金属材料の
接合構造。 （１０） 接合面が接触子接点部から離れていることを
特徴とする前記（８）または（９）に記載の異種金属材
料の接合構造。 （１１） 接合部の電気抵抗が母材の電気抵抗と同等で
あることを特徴とする前記（８）または（９）に記載の
異種金属材料の接合構造。(9) The contact portion of the arc contact used for the power circuit breaker is a copper-tungsten alloy,
A joining structure of dissimilar metal materials, wherein the joining structure according to the above (1) or (2) is employed, wherein the contact portion other than the contact portion is made of any one of iron, iron alloy, and copper alloy. . (10) The joining structure of dissimilar metal materials according to (8) or (9), wherein the joining surface is separated from the contact portion of the contact. (11) The joining structure of dissimilar metal materials according to (8) or (9), wherein the electrical resistance of the joining portion is equal to the electrical resistance of the base material.
【００１２】[0012]
【発明の実施の形態】以下に、本発明の実施の形態を実
施例に基づいて説明する。実施例１ 異なる特性を有する異種金属材料の摩擦圧接による接合
の例として、銅材とこれより剛性の小さいアルミニウム
材の接合部材について説明する。図２は棒状の異種金属
材料の継手の接合構造、図３はパイプ状の異種金属材料
の継手の接合構造を示したものである。図２（１）およ
び図３（１）は、それぞれ棒状およびパイプ状の接合構
造の従来例を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples. Embodiment 1 As an example of joining of dissimilar metal materials having different characteristics by friction welding, a joining member of a copper material and an aluminum material having a lower rigidity will be described. FIG. 2 shows a joint structure of a rod-shaped joint made of dissimilar metal materials, and FIG. 3 shows a joint structure of a pipe-shaped joint made of dissimilar metal materials. 2 (1) and 3 (1) show a conventional example of a rod-like and pipe-like joining structure, respectively.
【００１３】本発明においては、図２（２）および
（３）、および図３（２）および（３）に示すように、
銅材１とこれより剛性の小さいアルミニウム材２の接合
面端部で自由縁Ｘとなす角度θ2 が共に９０度未満とし
た。また、図２（４）および（５）、および図３（４）
および（５）に示すように、銅材１とこれより剛性の小
さいアルミニウム材２の接合面端部で自由縁Ｘとなす角
度θ1 が９０度の場合、他の金属材料の接合面端部で自
由縁Ｘとなす角度θ4 を９０度未満となるように設定し
た。In the present invention, as shown in FIGS. 2 (2) and (3) and FIGS. 3 (2) and (3),
The angle θ 2 formed by the free edge X at the end of the joining surface between the copper material 1 and the aluminum material 2 having a lower rigidity was less than 90 degrees. 2 (4) and (5), and FIG. 3 (4)
As shown in (5) and (5), when the angle θ 1 formed by the free edge X at the end of the joining surface of the copper material 1 and the aluminum material 2 having a smaller rigidity is 90 degrees, the joining surface end of another metal material Was set so that the angle θ 4 formed with the free edge X was less than 90 degrees.
【００１４】銅材とアルミニウム材の接合面端部で自由
縁となす角度を４０度から１４０度の範囲に変化させた
接合部材を作製し、引張り試験と衝撃試験を行った。引
張り試験の結果を、図４および図５に、また衝撃試験の
結果を、図６および図７に示す。なお、引張り強度比お
よび衝撃強度比は、いずれも９０度における強度を１と
した場合の割合を示した。A joining member was manufactured in which the angle formed by the free edge at the end of the joining surface between the copper material and the aluminum material was changed from 40 degrees to 140 degrees, and a tensile test and an impact test were performed. 4 and 5 show the results of the tensile test, and FIGS. 6 and 7 show the results of the impact test. Each of the tensile strength ratio and the impact strength ratio is a ratio when the strength at 90 degrees is set to 1.
【００１５】図４および５に示すように、引張り強度
は、接合面端部で自由縁となす角度に関係なく一定値を
示した。しかし、衝撃強度については銅材とアルミニウ
ム材の接合面端部で自由縁となす角度が共に９０度未満
のとき（図６）、またはどちらか一方が９０度の場合
（図７）、他の材料の接合面端部で自由縁となす角度が
９０度未満のとき、従来の９０度の値よりも高い値を示
している。As shown in FIGS. 4 and 5, the tensile strength exhibited a constant value irrespective of the angle formed by the free edge at the end of the joint surface. However, regarding the impact strength, when both the angles formed by the free edges at the ends of the joining surfaces of the copper material and the aluminum material are less than 90 degrees (FIG. 6), or when either one is 90 degrees (FIG. 7), the other When the angle between the free edge and the end of the joining surface of the material is less than 90 degrees, the value is higher than the conventional value of 90 degrees.
【００１６】このような傾向は、摩擦圧接のみならず、
冷間圧接、熱間圧接、拡散接合、爆発圧接、超音波接
合、ろう付け、はんだ付け、抵抗溶接、溶融金属注入、
鋳継ぎ、接着剤を用いた接合のいずれの方法において
も、一方の金属材料あるいは、この金属材料より剛性の
小さい材料の接合面端部で自由縁となす角度が共に９０
度未満、または、どらか一方が９０度の場合は、残りの
金属材料の接合端部で自由縁となす角度が９０度未満の
とき、従来の９０度の値よりも高い値を示し、これによ
り銅−アルミ部材の信頼性は大幅に向上した。This tendency is caused not only by friction welding, but also by
Cold welding, hot welding, diffusion welding, explosive welding, ultrasonic welding, brazing, soldering, resistance welding, molten metal injection,
In both the casting and the joining using an adhesive, the angle between the free edge at the end of the joining surface of one metal material or a material having a lower rigidity than this metal material is 90.
If the angle is less than 90 degrees or one of the angles is 90 degrees, when the angle between the free edge at the joining end of the remaining metal material is less than 90 degrees, a value higher than the conventional value of 90 degrees is indicated. This greatly improved the reliability of the copper-aluminum member.
【００１７】また、アルミ材とチタン材、アルミ材と
鋼、銅材と銅クロム材の接合部材においても上記傾向は
同じで剛性の大きな材料、チタン材（アルミ材とチタン
材）、鋼（アルミ材と鋼）、銅クロム材（銅材と銅クロ
ム材）の接合面端部で自由縁となす角度を共に９０度未
満、または、どちらか一方が９０度の場合は、残りの材
料の接合面端部で自由縁となす角度が９０度未満のと
き、従来の９０度の値よりも高い値を示し、接合部材の
信頼性は大幅に向上した。[0017] The same tendency is applied to the joining members made of aluminum and titanium, aluminum and steel, and copper and copper chromium, and rigid materials such as titanium (aluminum and titanium) and steel (aluminum) are used. Material and steel) and copper chromium (copper and copper chromium) have less than 90 degrees with the free edge at the end of the joint surface, or if either one is 90 degrees, join the remaining materials When the angle between the free edge at the end of the surface and the free edge is less than 90 degrees, the value is higher than the conventional value of 90 degrees, and the reliability of the joining member is greatly improved.
【００１８】実施例２ 電力用遮断器の通電接触子材料の一実施例を、図８に示
す。通電接触子は閉時の場合、固定側と可動側は接触し
ているが、開時の場合、可動側の通電接触子が操作機構
部に連結して固定側から離れる。一般的に可動側の通電
接触子２は、軽量で導電率の高いアルミ材から構成され
ており、可動側と固定側の接触子が離れるときに生じる
微小のアークによって接点部付近が溶損する。この溶損
部分は開閉操作回数の増加とともに大きくなり、開時の
ときの電流遮断特性が低下する。通電接触子の形状が小
さくなると、さらにこの傾向は大きくなる。 Embodiment 2 FIG. 8 shows an embodiment of a current-carrying contact material of a power circuit breaker. When the energizing contact is closed, the fixed side and the movable side are in contact with each other. However, when the energizing contact is open, the movable side energizing contact is connected to the operating mechanism and separates from the fixed side. Generally, the movable-side energizing contact 2 is made of a lightweight and highly conductive aluminum material, and the vicinity of the contact portion is melted and damaged by a minute arc generated when the movable-side and fixed-side contacts are separated. This erosion portion increases with an increase in the number of times of opening and closing operations, and the current interrupting characteristics at the time of opening decreases. This tendency is further increased as the shape of the current-carrying contact becomes smaller.
【００１９】可動側の通電接触子の接点部分１にアルミ
材よりも融点および導電率が高い銅材、それ以外の部分
をアルミ材とし、接合界面において、本発明の異種材料
の接合構造とした。銅材とアルミ材を摩擦圧接して、接
合界面を、接合面端部で自由縁となす角度を銅材とアル
ミ材共に９０度未満、または、どちらか一方が９０度の
場合は、残りの材料の接合面端部で自由縁となす角度が
９０度未満とする。従来の銅材とアルミ材の摩擦圧接部
材は、衝撃強度が低く、接合構造の信頼性が低かったた
めに、高導電率の銅−アルミ通電接触子は適用できなか
ったが、本発明の接合構造とすることで、アルミ材の通
電接触子に変えて使用できるようになった。The contact portion 1 of the movable current-carrying contact is made of a copper material having a higher melting point and conductivity than aluminum material, and the other portion is made of aluminum material. . The copper material and the aluminum material are friction-welded, and the angle between the joining interface and the free edge at the end of the joining surface is less than 90 ° for both the copper material and the aluminum material. The angle between the free edge and the end of the joining surface of the material is less than 90 degrees. Conventional friction welding members made of copper and aluminum have low impact strength and low reliability of the joint structure, so that high-conductivity copper-aluminum current-carrying contacts could not be applied. As a result, it can be used in place of a current-carrying contact made of aluminum.
【００２０】本発明のように、可動側の通電接触子の接
点部分を銅材に置き換えてそれ以外の部分を従来の軽量
のアルミ材とすることで導電性が高く、溶損が小さく、
軽量で、また形状が従来径の半分に小さくなっても良好
に大電流の開閉が行える通電接触子とできた。この効果
は、接触子接点部が銅、銅合金で、接点部以外が、アル
ミ材またはアルミ合金から構成された場合、同様の傾向
を示す。As in the present invention, by replacing the contact portion of the movable current-carrying contact with a copper material and replacing the other portion with a conventional lightweight aluminum material, the conductivity is high, the erosion is small,
The current-carrying contact was lightweight and could open and close a large current satisfactorily even if the shape was reduced to half of the conventional diameter. This effect shows the same tendency when the contact portion of the contact is made of copper or a copper alloy, and the other portion is made of an aluminum material or an aluminum alloy.
【００２１】また接合面が、接点部に近いと開閉時にお
けるアークの熱により、接合面がダメージを受け、衝撃
強度の低下となるために接合面は接点部から離すことが
望ましい。また、接合部での電気抵抗が高いと通電時に
接合部が加熱し、拡散接合層が成長して強度が低下する
ため、接合部の電気抵抗は、母材の電気抵抗と同等であ
る事が望ましい。If the joint surface is close to the contact portion, the joint surface is damaged by the heat of the arc at the time of opening and closing, and the impact strength is reduced. Therefore, it is desirable to separate the joint surface from the contact portion. In addition, if the electric resistance at the joint is high, the joint is heated during energization, the diffusion bonding layer grows, and the strength decreases, so that the electric resistance of the joint may be equal to the electric resistance of the base material. desirable.
【００２２】実施例３ 電力用遮断器の固定側と可動側アーク接触子を、図９に
示す。アーク接触子は閉時の場合、固定側と可動側は接
触しているが、開時の場合、可動側のアーク接触子が操
作機構部に連結して固定側から離れる。一般的にアーク
接触子は、接点部に耐アーク性の銅−タングステン合金
と接点部以外に銅クロム合金がもちいられ、銀ロウ付け
による接合から構成されているが、接合部における電気
抵抗が銅−タングステン合金の３倍と大きく、また融点
が銅クロム合金の１／２と小さい。このため、小型化す
ると可動側と固定側の接触子が離れるときに生じる大電
流のアークによる高熱で接合部の銀ロウが溶けてしま
い、小型化ができなかった。 Embodiment 3 FIG. 9 shows fixed and movable arc contacts of a power circuit breaker. When the arc contact is closed, the fixed side and the movable side are in contact with each other. However, when the arc contact is open, the movable arc contact is connected to the operation mechanism and is separated from the fixed side. Generally, an arc contact uses an arc-resistant copper-tungsten alloy for a contact portion and a copper chromium alloy in addition to a contact portion, and is formed by joining by silver brazing. -It is three times as large as a tungsten alloy and has a melting point as small as one half that of a copper chromium alloy. For this reason, when the size is reduced, the silver brazing at the joint is melted by the high heat generated by the large current arc generated when the movable and fixed contacts are separated, and the size cannot be reduced.
【００２３】そこで、アーク接触子の接点部に耐アーク
性の銅−タングステン合金と接点部以外に銅−クロム合
金を、接合界面において、本発明の接合構造とした。す
なわち、銅−タングステン合金と銅−クロム合金を摩擦
圧接して、接合界面を接合体の銅−クロム合金より剛性
の高い銅−タングステン合金において、接合面端部で自
由縁となす角度を銅クロム合金と銅−タングステン合金
材共に９０度未満、または、どちらか一方が９０度の場
合は、残りの材料の接合面端部で自由縁となす角度が９
０度未満とする。これにより、接合構造の信頼性が向上
して、銅−タングステン合金と銅−クロム合金の摩擦圧
接による接合構造が従来材に変えて適用でき、小型化も
達成できるようになった。Therefore, an arc resistant copper-tungsten alloy and a copper-chromium alloy other than the contact portion were formed at the contact portion of the arc contact at the joint interface to form the joint structure of the present invention. In other words, the copper-tungsten alloy and the copper-chromium alloy are friction-welded, and the joining interface is made of a copper-tungsten alloy having higher rigidity than the copper-chromium alloy of the joined body. If both the alloy and the copper-tungsten alloy material are less than 90 degrees, or if either one is 90 degrees, the angle between the remaining material and the free edge at the end of the joining surface is 9 degrees.
It shall be less than 0 degrees. As a result, the reliability of the joint structure is improved, and a joint structure by friction welding of a copper-tungsten alloy and a copper-chromium alloy can be applied instead of the conventional material, and miniaturization can be achieved.
【００２４】この効果は、接触子接点部が銅−タングス
テン合金、接点部以外が、鉄、鉄合金、銅合金から構成
された場合でも、同様の傾向を示す。This effect shows the same tendency even when the contact portion of the contact is made of a copper-tungsten alloy and the contact portion is made of iron, an iron alloy or a copper alloy.
【００２５】[0025]
【発明の効果】本発明によれば、一方の金属材料と、こ
れより剛性の小さい金属材料とを接合する構造におい
て、一方の金属材料あるいは、これより剛性の小さい材
料の接合面端部で自由縁となす角度が共に９０度未満、
または、どちらか一方が９０度の場合は、残りの金属材
料の接合面端部で自由縁となす角度を９０度未満となる
ように設定した異種材料間の接合構造とすることで、衝
撃強度が高く、信頼性の高い異種金属材料の接合構造が
達成できる。According to the present invention, in a structure in which one metal material and a metal material having a lower rigidity are joined to each other, the one metal material or a material having a lower rigidity is free at the end of the joining surface. Both angles with the edge are less than 90 degrees,
Alternatively, when either one is at 90 degrees, the impact strength is obtained by using a joining structure between different materials in which the angle formed by the free edge at the joining surface end of the remaining metal material is less than 90 degrees. And a highly reliable bonding structure of dissimilar metal materials can be achieved.
【図１】従来の摩擦圧接による異種金属材料の接合の説
明図である。FIG. 1 is an explanatory view of a conventional method of joining dissimilar metal materials by friction welding.
【図２】棒状の異種金属材料の継手の接合構造を示す図
である。FIG. 2 is a view showing a joint structure of a rod-shaped joint made of dissimilar metal materials.
【図３】パイプ状の異種金属材料の継手の接合構造を示
す図である。FIG. 3 is a view showing a joint structure of a joint made of a pipe-shaped dissimilar metal material.
【図４】異種金属材料の接合構造における引張り強度を
示すグラフである。FIG. 4 is a graph showing a tensile strength in a joining structure of dissimilar metal materials.
【図５】異種金属材料の接合構造における引張り強度を
示すグラフである。FIG. 5 is a graph showing a tensile strength in a joining structure of dissimilar metal materials.
【図６】異種金属材料の接合構造における衝撃強度を示
すグラフである。FIG. 6 is a graph showing an impact strength in a joint structure of different metal materials.
【図７】異種金属材料の接合構造における衝撃強度を示
すグラフである。FIG. 7 is a graph showing impact strength in a joint structure of different metal materials.
【図８】本発明の接合構造を採用した電力用遮断器の通
電接触子の概略構造を示す図である。FIG. 8 is a diagram showing a schematic structure of a current-carrying contact of a power circuit breaker employing the joint structure of the present invention.
【図９】本発明の接合構造を採用した電力用遮断器のア
ーク接触子の概略構造を示す図である。FIG. 9 is a view showing a schematic structure of an arc contact of a power circuit breaker employing the joint structure of the present invention.
１ 金属材料 ２ 金属材料１よりも剛性の小さい金属材料 ３ 摩擦圧接装置のチャックの固定軸 ４ 回転軸 ５ 金属材料のバリ Ｐ 加圧力 Ｘ 自由縁 θ1 金属材料２の接合面端部で自由縁となす角度が９
０度 θ2 金属材料１と２の接合面端部で自由縁となす角度
が９０度未満 θ3 金属材料２の接合面端部で自由縁となす角度が９
０度未満 θ4 金属材料２の接合面端部で自由縁となす角度が９
０度未満 θ5 接合面端部で自由縁となす角度の一方が９０度で
他の金属材料の接合面端部で自由縁となす角度が９０度
未満DESCRIPTION OF SYMBOLS 1 Metal material 2 Metal material whose rigidity is smaller than metal material 1 3 Fixed axis of chuck of friction welding device 4 Rotation axis 5 Burr of metal material P Pressure X Free edge θ 1 Free edge at end of joining surface of metal material 2 Is 9
0 ° θ 2 The angle between the free edge at the end of the joining surface of metal materials 1 and 2 is less than 90 ° θ 3 The angle between the free edge at the end of the joining surface of metal material 2 and 9
Angle between the free edge at the joint surface end of the 0-degree less than theta 4 metal material 2 9
One angle between the free edge at 0 ° under theta 5 bonding surface ends the angle formed with the free edge at the joint surface end of the other metal material 90 degrees less than 90 degrees
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２３Ｋ 103:18 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI B23K 103: 18
Claims (11)
の小さい金属材料との接合において、前記一方の金属材
料および前記剛性の小さい金属材料の接合面端部で自由
縁となす角度が共に９０度未満となるように設定したこ
とを特徴とする、異種金属材料の接合構造。When joining one of a metal material and a metal material having a lower rigidity than the metal material, the angles formed by the free edges at the ends of the joining surfaces of the one metal material and the metal material having a lower rigidity are both equal. A joining structure of dissimilar metal materials, wherein the joining structure is set to be less than 90 degrees.
の小さい金属材料との接合において、前記一方の金属材
料または前記剛性の小さい金属材料の接合面端部で自由
縁となす角度のいずれか一方が９０度の場合、残りの金
属材料の接合面端部での自由縁となす角度を９０度未満
となるように設定したことを特徴とする、異種金属材料
の接合構造。2. The method according to claim 1, wherein in joining one of the metal materials and a metal material having a lower rigidity than the metal material, the angle between a free edge at an end of the joining surface of the one metal material or the metal material having a lower rigidity is determined. A joining structure for dissimilar metal materials, wherein when one of them is 90 degrees, the angle between the remaining metal material and the free edge at the end of the joining surface is set to be less than 90 degrees.
摩擦圧接、冷間圧接、熱間圧接、拡散接合、爆発圧接、
鍛接、超音波接合、ろう付け、はんだ付け、抵抗溶接、
溶融金属注入、鋳継ぎ、接着剤を用いた接合のいずれか
の方法であることを特徴とする請求項１または２に記載
の異種金属材料の接合構造。3. A joining means for dissimilar metal materials having different rigidities,
Friction welding, cold welding, hot welding, diffusion welding, explosive welding,
Forging, ultrasonic bonding, brazing, soldering, resistance welding,
The joining structure for dissimilar metal materials according to claim 1 or 2, wherein the joining method is any one of a method of injecting molten metal, casting, and joining using an adhesive.
前記金属材料より剛性の小さい金属材料がアルミニウム
またはアルミニウム合金であることを特徴とする請求項
１または２に記載の異種金属材料の接合構造。4. One of the metal materials is copper or copper alloy,
3. The structure according to claim 1, wherein the metal material having a lower rigidity than the metal material is aluminum or an aluminum alloy.
であり、前記金属材料より剛性の小さい金属材料がアル
ミニウムまたはアルミニウム合金であることを特徴とす
る請求項１または２に記載の異種金属材料の接合構造。5. The dissimilar metal material according to claim 1, wherein one of the metal materials is titanium or a titanium alloy, and the metal material having a lower rigidity than the metal material is aluminum or an aluminum alloy. Joint structure.
より剛性の小さい金属材料がアルミニウムまたはアルミ
ニウム合金であることを特徴とする請求項１または２に
記載の異種金属材料の接合構造。6. The joining structure for dissimilar metal materials according to claim 1, wherein one of the metal materials is steel, and the metal material having a lower rigidity than the metal material is aluminum or an aluminum alloy.
より剛性の小さい金属材料が銅または銅合金であること
を特徴とする請求項１または２に記載の異種金属材料の
接合構造。7. The joining structure for dissimilar metal materials according to claim 1, wherein one of the metal materials is steel, and the metal material having a lower rigidity than the metal material is copper or a copper alloy.
触子接点部が銅または銅合金であり、前記接触子接点部
以外がアルミニウムまたはアルミニウム合金から構成さ
れる請求項１または２に記載の接合構造を採用したこと
を特徴とする異種金属材料の接合構造。8. A contact according to claim 1, wherein the contact points of the current-carrying contacts used in the power circuit breaker are made of copper or a copper alloy, and the parts other than the contact points are made of aluminum or an aluminum alloy. A joining structure for dissimilar metal materials, wherein the joining structure described above is adopted.
接触子接点部が銅−タングステン合金であり、前記接触
子接点部以外が鉄、鉄合金または銅合金のいずれか１種
から構成される請求項１または２に記載の接合構造を採
用したことを特徴とする異種金属材料の接合構造。9. An arc contact used in a power circuit breaker, wherein a contact portion of the contact is made of a copper-tungsten alloy, and other than the contact portion is made of any one of iron, iron alloy and copper alloy. A joining structure for dissimilar metal materials, wherein the joining structure according to claim 1 or 2 is adopted.
とを特徴とする請求項８または９に記載の異種金属材料
の接合構造。10. The joining structure for dissimilar metal materials according to claim 8, wherein the joining surface is separated from the contact portion of the contact.
等であることを特徴とする請求項８または９に記載の異
種金属材料の接合構造。11. The structure for joining dissimilar metal materials according to claim 8, wherein the electric resistance of the joining portion is equal to the electric resistance of the base material.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9342554A JPH11176268A (en) | 1997-12-12 | 1997-12-12 | Joining structure of metal members of different kinds |
| KR1019980049402A KR100315590B1 (en) | 1997-11-19 | 1998-11-18 | Joint structure of dissimilar metal materials |
| CA002254349A CA2254349C (en) | 1997-11-19 | 1998-11-18 | Joined structure of dissimilar metallic materials |
| US09/193,845 US6492037B2 (en) | 1997-07-11 | 1998-11-18 | Joined structure of dissimilar metallic materials |
| CA002432944A CA2432944C (en) | 1997-11-19 | 1998-11-18 | Joined structure of dissimilar metallic materials |
| EP98121581A EP0923145A3 (en) | 1997-11-19 | 1998-11-19 | Joined structure of dissimilar metallic materials |
| EP08010598A EP1962353A3 (en) | 1997-11-19 | 1998-11-19 | Joined structure of dissimilar metallic materials |
| CNB981249485A CN1187160C (en) | 1997-11-19 | 1998-11-19 | Binding structure for different kinds of metal |
| US10/270,156 US6692841B2 (en) | 1997-11-19 | 2002-10-15 | Joined structure of dissimilar metallic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9342554A JPH11176268A (en) | 1997-12-12 | 1997-12-12 | Joining structure of metal members of different kinds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11176268A true JPH11176268A (en) | 1999-07-02 |
Family
ID=18354659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9342554A Pending JPH11176268A (en) | 1997-07-11 | 1997-12-12 | Joining structure of metal members of different kinds |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11176268A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003014612A1 (en) * | 2001-08-08 | 2003-02-20 | Jgc Corporation | Method and structure for connecting difficult-to-join pipes to be used at high temperature |
| JP2007307423A (en) * | 2002-08-08 | 2007-11-29 | Terumo Corp | Guide wire |
| US7892187B2 (en) | 2002-08-23 | 2011-02-22 | Terumo Kabushiki Kaisha | Guide wire |
| JP2011156406A (en) * | 2002-08-08 | 2011-08-18 | Terumo Corp | Guide wire |
| US9056189B2 (en) | 2002-08-08 | 2015-06-16 | Terumo Kabushiki Kaisha | Guide wire |
| WO2021095528A1 (en) * | 2019-11-12 | 2021-05-20 | 国立大学法人大阪大学 | Dissimilar material solid phase bonding method, dissimilar material solid phase bonded structure, and dissimilar material solid phase bonding device |
| WO2025046854A1 (en) | 2023-08-31 | 2025-03-06 | ビークルエナジージャパン株式会社 | Battery |
-
1997
- 1997-12-12 JP JP9342554A patent/JPH11176268A/en active Pending
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| US9056189B2 (en) | 2002-08-08 | 2015-06-16 | Terumo Kabushiki Kaisha | Guide wire |
| JP2007307423A (en) * | 2002-08-08 | 2007-11-29 | Terumo Corp | Guide wire |
| US9295814B2 (en) | 2002-08-08 | 2016-03-29 | Terumo Kabushiki Kaisha | Guide wire |
| JP2011156406A (en) * | 2002-08-08 | 2011-08-18 | Terumo Corp | Guide wire |
| US7922673B2 (en) | 2002-08-23 | 2011-04-12 | Terumo Kabushiki Kaisha | Guide wire |
| US8124905B2 (en) | 2002-08-23 | 2012-02-28 | Terumo Kabushiki Kaisha | Guide wire |
| US8348860B2 (en) | 2002-08-23 | 2013-01-08 | Terumo Kabushiki Kaisha | Guide wire |
| US8109887B2 (en) | 2002-08-23 | 2012-02-07 | Terumo Kabushiki Kaisha | Guide wire |
| US7892187B2 (en) | 2002-08-23 | 2011-02-22 | Terumo Kabushiki Kaisha | Guide wire |
| WO2021095528A1 (en) * | 2019-11-12 | 2021-05-20 | 国立大学法人大阪大学 | Dissimilar material solid phase bonding method, dissimilar material solid phase bonded structure, and dissimilar material solid phase bonding device |
| JPWO2021095528A1 (en) * | 2019-11-12 | 2021-05-20 | ||
| US11872651B2 (en) | 2019-11-12 | 2024-01-16 | Osaka University | Dissimilar material solid phase bonding method, dissimilar material solid phase bonded structure, and dissimilar material solid phase bonding device |
| WO2025046854A1 (en) | 2023-08-31 | 2025-03-06 | ビークルエナジージャパン株式会社 | Battery |
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