JPH10156523A - Joining method of dissimilar material - Google Patents
Joining method of dissimilar materialInfo
- Publication number
- JPH10156523A JPH10156523A JP33632396A JP33632396A JPH10156523A JP H10156523 A JPH10156523 A JP H10156523A JP 33632396 A JP33632396 A JP 33632396A JP 33632396 A JP33632396 A JP 33632396A JP H10156523 A JPH10156523 A JP H10156523A
- Authority
- JP
- Japan
- Prior art keywords
- linear expansion
- expansion coefficient
- joining
- coefficient
- stainless steel
- 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
- 238000005304 joining Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 title claims description 77
- 238000005219 brazing Methods 0.000 claims abstract description 29
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 27
- 239000010935 stainless steel Substances 0.000 claims abstract description 26
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 21
- 239000010955 niobium Substances 0.000 claims abstract description 21
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 9
- 238000010894 electron beam technology Methods 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は異種材料の接合方法
に関し、更に詳細に言えば、高速列車の浮上や医療用磁
気共鳴画像化装置（ＭＲＩ）などに応用可能な超伝導製
品のフランジ部分の接合に好適な異種材料の接合方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining dissimilar materials, and more particularly, to a method for joining a flange portion of a superconducting product applicable to a floating of a high-speed train, a magnetic resonance imaging apparatus (MRI), and the like. The present invention relates to a method for joining dissimilar materials suitable for joining.
【０００２】[0002]
【従来の技術】異種材料を溶接する場合に、線膨張係数
が大きく相違すると熱の影響で界面に過大な剪断応力が
かかる。そして、剪断応力が母材強度を超えると健全な
接合ができなくなった。母材の接合部を含めて加熱溶融
する溶融接合の場合に、この傾向が顕著である。例え
ば、超伝導製品２０は、図２及び図３に示すようにニオ
ブ製の本体１とステンレス鋼製のフランジ部２を備えて
いる。この場合、ニオブとステンレス鋼の線膨張係数に
大きな差があるために、両者を直接に溶融接合すること
は困難であった。2. Description of the Related Art When welding different kinds of materials, if the linear expansion coefficients differ greatly, excessive shear stress is applied to the interface due to heat. When the shear stress exceeded the base material strength, sound joining was not possible. This tendency is remarkable in the case of fusion joining in which the heating and melting are performed including the joining portion of the base material. For example, the superconducting product 20 includes a main body 1 made of niobium and a flange 2 made of stainless steel as shown in FIGS. In this case, there is a large difference in the linear expansion coefficient between niobium and stainless steel, so that it has been difficult to directly melt-bond the two.
【０００３】そこで、従来から線膨張係数の小さなニオ
ブ製の本体１と線膨張係数の大きなステンレス鋼製のフ
ランジ部を構成する部材２とを接合するには、例えば図
２に示すような超伝導製品を接合により形成する場合
に、ニオブ製の本体を構成する部材１の底部側に径方向
外方に延びる張出部３を設け、ステンレス鋼製の部材２
に前記の張出部３に係合する凹部４を設けて、張出部３
と凹部４との間隙にろう材５を流し込み、径方向で直接
にろう材５により接合していた。あるいは、図３に示す
ようにニオブ製の管体１に設けた張出部３をステンレス
鋼製の部材２に設けた平坦面６に対接させ、この平坦面
６と張出部３の間隙にろう材５を流し込み、軸方向で直
接ろう付けすることも行われた。In order to join a niobium body 1 having a small linear expansion coefficient and a stainless steel flange 2 having a large linear expansion coefficient, a conventional superconducting member as shown in FIG. When the product is formed by joining, a protrusion 1 extending radially outward is provided on the bottom side of the member 1 constituting the niobium body, and a member 2 made of stainless steel is provided.
A recess 4 for engaging with the overhang 3 is provided on the overhang 3
The brazing material 5 was poured into the gap between the metal and the concave portion 4 and joined directly by the brazing material 5 in the radial direction. Alternatively, as shown in FIG. 3, the overhang portion 3 provided on the niobium tube 1 is brought into contact with the flat surface 6 provided on the stainless steel member 2, and the gap between the flat surface 6 and the overhang portion 3 is formed. A brazing material 5 was poured into the brazing material, and brazing was performed directly in the axial direction.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら前述した
従来のこの種の方法では以下のような問題があった。即
ち従来の接合方法では、図２に示す場合では、線膨張係
数の小さなニオブと線膨張係数の大きなステンレス鋼と
をろう付け接合するために、ろう付け温度まで加熱する
と、ニオブ製の部材１とステンレス製の部材２の径方向
の隙間が過大になり、ろう材５が流出し、健全な接合が
不可能になるという問題があった。However, the above-described conventional method has the following problems. That is, in the conventional joining method, in the case shown in FIG. 2, in order to braze and join a niobium having a small linear expansion coefficient to a stainless steel having a large linear expansion coefficient, the niobium member 1 is heated to a brazing temperature. There has been a problem that the gap in the radial direction of the stainless steel member 2 becomes excessively large, the brazing material 5 flows out, and sound joining becomes impossible.
【０００５】また、図３に示す場合では、ニオブ製の部
材１とステンレス鋼製の部材２との線膨張係数の差によ
り、加熱後、冷却時にろう付け接合個所であるろう材５
に過大な剪断力が加わる。このために、ろう付け部の剥
離が生じて、健全な接合が得られないという問題があっ
た。[0005] In the case shown in FIG. 3, the brazing material 5 which is a brazing joint portion at the time of heating and cooling is used due to the difference in linear expansion coefficient between the niobium member 1 and the stainless steel member 2.
Excessive shear force is applied to the For this reason, there was a problem that peeling of the brazed portion occurred and a sound joining could not be obtained.
【０００６】本発明の目的は、かかる従来の問題点を解
決するためになされたものであり、線膨張係数の異なる
２部材を、過大な剪断応が発生することがなく、健全な
接合を可能とするような異種材料の接合方法を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to solve such a conventional problem, and enables sound joining of two members having different linear expansion coefficients without generating excessive shearing response. It is an object of the present invention to provide a joining method for dissimilar materials.
【０００７】[0007]
【課題を解決するための手段】本発明は異種材料の接合
方法であり、上述の技術的課題を解決するために以下の
ように構成されている。すなわち、本発明の異種材料の
接合方法は、線膨張係数の大きな一方の部材と、前記部
材に比して線膨張係数の小さな他方の部材とを接合する
継手において、前記線膨張係数の大きな一方の部材と略
同程度の線膨張係数をもつ部材をインサート材として用
い、インサート材の一端縁を前記線膨張係数の大きな一
方の部材にろう付けし、ろう付けの完了後に前記インサ
ート材の他端縁を線膨張係数が小さな他方の部材に溶融
接合することを特徴とする。SUMMARY OF THE INVENTION The present invention is a method for joining dissimilar materials, and is configured as follows to solve the above technical problem. That is, the method for joining dissimilar materials according to the present invention is a joint for joining one member having a large linear expansion coefficient to the other member having a small linear expansion coefficient as compared with the member, and having one having a large linear expansion coefficient A member having a coefficient of linear expansion substantially equal to that of the member is used as an insert material, one end edge of the insert material is brazed to one member having a large linear expansion coefficient, and the other end of the insert material is completed after brazing is completed. The edge is fusion-bonded to the other member having a small linear expansion coefficient.
【０００８】なお、前記異種材料製の部材の接合には、
ニオブとステンレス鋼の接合をはじめ、炭素鋼とアルミ
ニウム合金との接合、チタン合金とアルミニウム合金と
の接合など、種々の線膨張係数の異なる異種材料の接合
に広く適用することが可能である。また、前記溶融接合
は電子ビーム溶接が好ましいが、その他にレーザビーム
溶接を採用することも可能である。[0008] The joining of the members made of different kinds of materials includes:
The present invention can be widely applied to various kinds of materials having different linear expansion coefficients, such as a joint between niobium and stainless steel, a joint between carbon steel and an aluminum alloy, and a joint between a titanium alloy and an aluminum alloy. In addition, the fusion bonding is preferably performed by electron beam welding, but laser beam welding can also be employed.
【０００９】前記ろう付けには、ぬれを良くするために
銀ろうを用いることが好ましい。しかし、黄銅ろうやそ
の他の等の種々のろう材のうちから接合材の接合条件に
合致したものを適宜に選択して実施することができる。
また、ろう付けは真空雰囲気や不活性雰囲気内で行うこ
とが好ましい。さらに、酸化皮膜を除去して清浄にする
ために適当なフラックスを選択して用いることができ
る。前記継手、つまり接合の形式は突き合わせ継手、Ｔ
継手、重ね継手等の各種の継手を包含することは言うま
でもない。In the brazing, it is preferable to use a silver braze for improving the wetting. However, it is possible to appropriately select and implement a material that matches the joining conditions of the joining material from various brazing materials such as brass brazing and others.
Further, it is preferable that the brazing is performed in a vacuum atmosphere or an inert atmosphere. Furthermore, an appropriate flux can be selected and used for removing and cleaning the oxide film. The type of the joint, that is, the joint is a butt joint, T
It goes without saying that various joints such as joints and lap joints are included.
【００１０】本発明の異種材料の接合方法は、上記のよ
うな必須の構成要素からなるが、その構成要素が具体的
に以下のような場合であっても成立する。その具体的構
成要素とは、前記線膨張係数の小さな材料はニオブであ
り、前記線膨張係数の大きな材料はステンレス鋼であ
り、さらにインサート材は銅である。よって、本発明
は、線膨張係数の大きなステンレス鋼製の部材と、前記
部材に比して線膨張係数が小さなニオブ製の部材とを接
合する継手において、前記線膨張係数の大きなステンレ
ス鋼製の部材と略同程度の線膨張係数をもつ銅製の部材
をインサート材として用い、インサート材の一端をステ
ンレス鋼製の部材にろう付けし、ろう付けの完了後に前
記インサート材の他端を線膨張係数が小さなニオブ製の
部材に電子ビーム溶接によって溶融接合することを特徴
とする。前記ステンレス鋼には、１８Ｃｒで代表される
フェライト系ステンレス鋼、１８Ｃｒ−８Ｎｉで代表さ
れるオーステナイト系ステンレス鋼、あるいは１３Ｃｒ
−低Ｃで代表されるマルテンサイト系ステンレス鋼を含
むものとする。The method for joining dissimilar materials according to the present invention comprises the essential components as described above, but is also valid when the components are specifically as follows. Specifically, the material having a small linear expansion coefficient is niobium, the material having a large linear expansion coefficient is stainless steel, and the insert material is copper. Therefore, the present invention provides a joint for joining a stainless steel member having a large linear expansion coefficient and a niobium member having a small linear expansion coefficient as compared to the member, and a stainless steel member having a large linear expansion coefficient. A copper member having a linear expansion coefficient substantially equal to that of the member is used as an insert material, one end of the insert material is brazed to a stainless steel member, and after the brazing is completed, the other end of the insert material is subjected to a linear expansion coefficient. Is melt-bonded to a small niobium member by electron beam welding. The stainless steel may be a ferritic stainless steel represented by 18Cr, an austenitic stainless steel represented by 18Cr-8Ni, or 13Cr.
-Includes martensitic stainless steel represented by low C.
【００１１】本発明の異種材料の接合方法によると、線
膨張係数の大きな一方の部材と略同程度の線膨張係数を
もつ部材をインサート材を介して接合する。このインサ
ート材の一端を線膨張係数の大きな接合材にろう付けす
る。このろう付けが完了したら、インサート材の他端を
線膨張係数の小さな他方の部材に溶融接合する。According to the method for joining dissimilar materials of the present invention, a member having a linear expansion coefficient substantially equal to that of one member having a large linear expansion coefficient is joined via an insert material. One end of this insert material is brazed to a joining material having a large linear expansion coefficient. When the brazing is completed, the other end of the insert material is fusion-bonded to the other member having a small linear expansion coefficient.
【００１２】[0012]
【発明の実施の形態】以下、本発明の異種材料の接合方
法について図１に示される実施形態についてさらにに詳
細に説明する。但し、この実施例に記載されている構成
部品の寸法、材質、形状、その相対的配置等は特に特定
的な記載がないかぎりは、この発明の範囲をそれに限定
する趣旨ではなく、単なる説明例にすぎない。図１には
本発明にかかる異種材料の接合方法の一実施形態により
接合された物品の一例である超伝導製品が符号２０で示
されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for bonding different materials according to the present invention will be described in more detail with reference to the embodiment shown in FIG. However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. It's just In FIG. 1, reference numeral 20 denotes a superconducting product which is an example of an article joined by an embodiment of the method for joining dissimilar materials according to the present invention.
【００１３】本発明の異種材料の接合方法により接合さ
れる超伝導製品２０は、本体１は内径Ｌａが３００mmの
ニオブ〔線膨張係数β＝8.0×10-6／℃（27〜950℃平
均）〕製の部材からなり、その下端縁７がインサート材
である銅〔線膨張係数β＝20.2×10-6／℃（27〜950℃
平均）〕製の部材８の上端縁９と接合している。前記の
銅製の部材８は下方に行くに従って外径が末広がり状に
拡大する円錐面１０を経て下端縁１１に向けて肉厚の大
径部１２が形成されている。さらに、ステンレス鋼〔線
膨張係数β＝21.2×10-6／℃（27〜950℃平均）〕製の
フランジ２は内径Ｌｂが３２０mmの周段部１３が設けら
れた部材からなる。そして、この周段部１３に銅製の部
材８の下端縁１１を嵌合した状態で接合している。The superconducting product 20 joined by the dissimilar material joining method of the present invention has a main body 1 of niobium having an inner diameter La of 300 mm [linear expansion coefficient β = 8.0 × 10 −6 / ° C. (average of 27 to 950 ° C.)] The lower end edge 7 of which is an insert material of copper [linear expansion coefficient β = 20.2 × 10 −6 / ° C. (27 to 950 ° C.)
(Average)] member 8. The copper member 8 is formed with a large-diameter portion 12 having a large thickness toward a lower end edge 11 via a conical surface 10 whose outer diameter expands divergently as it goes downward. Further, the flange 2 made of stainless steel [linear expansion coefficient β = 21.2 × 10 −6 / ° C. (average of 27 to 950 ° C.)] is a member provided with a peripheral step portion 13 having an inner diameter Lb of 320 mm. Then, the lower end edge 11 of the copper member 8 is fitted to the peripheral step portion 13 in a fitted state.
【００１４】本発明の異種材料の接合方法によれば、線
膨張係数の小さいニオブ製の部材１と線膨張係数の大き
いステンレス鋼製の部材２との間に線膨張係数がステン
レス鋼と略同程度の銅製の部材８をインサート材として
を介在させる。そして、ステンレス鋼製の部材２と銅製
の部材８とを真空中でろう付け温度まで加熱し、母材で
あるステンレス鋼や銅の間隙に、母材よりも融点の低い
金属からなる溶融した銀ろう（融点が620〜800℃）５を
真空中で溶融し、この溶融したろう材５を母材の間隙に
流し込むことによって母材を接合する。According to the method for joining dissimilar materials of the present invention, a linear expansion coefficient between a niobium member 1 having a small linear expansion coefficient and a stainless steel member 2 having a large linear expansion coefficient is substantially the same as that of stainless steel. A copper member 8 of a certain degree is interposed as an insert material. Then, the member 2 made of stainless steel and the member 8 made of copper are heated to a brazing temperature in a vacuum, and molten silver made of a metal having a melting point lower than that of the base material is filled in a gap between the base material stainless steel and copper. The brazing material (melting point: 620-800 ° C.) 5 is melted in a vacuum, and the molten brazing material 5 is poured into the gap between the base materials to join the base materials.
【００１５】ステンレス製の部材２とインサート材であ
る銅製の部材８とのろう付けを完了した後、ニオブ製の
部材１の下端縁７と銅製の部材８の上端縁９とを溶融接
合する。本実施の形態では、溶融接合として高真空（10
-4〜10-5Torr）状態で電子ビーム溶接を行う。電子ビー
ム溶接によって電子ビームが母材へ衝突し、この衝突エ
ネルギーで母材の狭い領域を深く加熱して溶融接合す
る。その結果、溶融接合であるアーク溶接等に比して少
ないエネルギーで精度の高い接合が実現する。After the brazing of the stainless member 2 and the copper member 8, which is an insert material, is completed, the lower edge 7 of the niobium member 1 and the upper edge 9 of the copper member 8 are fusion bonded. In the present embodiment, a high vacuum (10
Electron beam welding is performed at -4 to 10 -5 Torr). The electron beam collides with the base material by the electron beam welding, and a narrow region of the base material is heated and melt-bonded by this collision energy. As a result, high-precision joining can be realized with less energy compared to arc welding or the like which is fusion joining.
【００１６】本発明の実施の形態によれば、先ずステン
レス鋼製の部材２と、インサート材としての線膨張係数
が同程度の銅製の部材８とをろう付け接合するので、母
材相互の隙間や剪断応力の発生を防ぐ。またインサート
材としての銅製の部材８とニオブ製の本体１を電子ビー
ム溶接することにより、健全な接合が行われる。ちなみ
に、本発明の実施の形態により接合した図１に示す寸法
の超伝導製品２０を、本発明の方法を用いないで従来の
方法でろう付けした場合には、９５０℃に加熱した時点
で、以下の計算式(１)から明らかなように、ニオブ製の
部材１とステンレス鋼製の部材２との間に１．９５mmの
隙間δが発生し、ろう材２が流出してしまい、健全な接
合ができないことになる。 隙間δ＝〔320mm×923℃×(21.2×10-6/℃−8.0×10-6/℃）〕/２＝1.95mm・ ・・・・・・・・・(1) また、両母材の軸方向の界面にかかる剪断応力は約８５
kgf／mm2となり、過大な応力が母材にかかり、これが母
材強度を超えることとなるために健全な接合ができない
ことが分かる。According to the embodiment of the present invention, first, the member 2 made of stainless steel and the member 8 made of copper having the same linear expansion coefficient as the insert material are joined by brazing. And the generation of shear stress. In addition, sound joining is performed by electron beam welding the copper member 8 as the insert material and the niobium body 1. Incidentally, when the superconducting product 20 having the dimensions shown in FIG. 1 joined according to the embodiment of the present invention was brazed by a conventional method without using the method of the present invention, when the superconducting product 20 was heated to 950 ° C., As is apparent from the following calculation formula (1), a gap δ of 1.95 mm is generated between the niobium-made member 1 and the stainless steel-made member 2, the brazing material 2 flows out, and the sound quality is improved. Joining will not be possible. Clearance [delta] = [320mm × 923 ℃ × (21.2 × 10 -6 /℃-8.0×10 -6 /℃)〕/2=1.95Mm-......... (1) Further, both the base material Of about 85 at the axial interface
kgf / mm 2 , which indicates that an excessive stress is applied to the base material, which exceeds the base material strength, and that sound bonding cannot be performed.
【００１７】[0017]
【発明の効果】以上説明したように、本発明の異種材料
の接合方法によれば、線膨張係数の大きな一方の部材
と、前記部材に比して線膨張係数が小さな他方の部材と
を接合する場合に、線膨張係数の大きな一方の部材と略
同程度の線膨張係数をもつ部材をインサート材として用
い、インサート材の一端縁を前記一方の部材にろう付け
し、ろう付けの完了後に前記インサート材の他端縁を線
膨張係数が小さな他方の部材に溶融接合するので、ろう
付け時の温度上昇に伴うろう材の流出を防止することが
できる。又ろう付け接合部に過大な剪断応力が発生する
のを防止し、これに起因するろう付け部の剥離が防止さ
れる。従って健全な接合が可能となる。As described above, according to the method for joining dissimilar materials of the present invention, one member having a large coefficient of linear expansion is joined to the other member having a small coefficient of linear expansion as compared with the member. In the case of using a member having a linear expansion coefficient substantially equal to that of one member having a large linear expansion coefficient as an insert material, one end edge of the insert material is brazed to the one member, and after the brazing is completed, Since the other end of the insert material is fusion-bonded to the other member having a small linear expansion coefficient, it is possible to prevent the brazing material from flowing out due to a rise in temperature during brazing. Further, excessive shear stress is prevented from being generated at the brazed joint, and peeling of the brazed portion due to this is prevented. Therefore, sound joining is possible.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明にかかる異種材料の接合方法の一実施形
態により接合された超伝導製品の断面図である。FIG. 1 is a cross-sectional view of a superconducting product joined by one embodiment of a method for joining dissimilar materials according to the present invention.
【図２】従来の異種材料の接合方法により接合された超
伝導製品の断面図である。FIG. 2 is a cross-sectional view of a superconducting product joined by a conventional dissimilar material joining method.
【図３】従来の異種材料の接合方法により接合された他
の形式の超伝導製品の断面図である。FIG. 3 is a cross-sectional view of another type of superconducting product joined by a conventional dissimilar material joining method.
１ 線膨張係数の小さな部材（ニオブ製の本体） ２ 線膨張係数の大きな部材（ステンレス鋼製のフラ
ンジ部） ５ ろう材 ８ インサート材（銅製の部材） ９ インサート材の上端縁 １１ インサート材の下端縁 ２０ 超伝導製品1 A member having a small coefficient of linear expansion (a body made of niobium) 2 A member having a large coefficient of linear expansion (a stainless steel flange) 5 Brazing material 8 Insert material (a member made of copper) 9 Upper edge of insert material 11 Lower edge of insert material Rim 20 superconducting product
Claims (2)
部材に比して線膨張係数の小さな他方の部材とを接合す
る継手において、前記線膨張係数の大きな一方の部材と
略同程度の線膨張係数をもつ部材をインサート材として
用い、インサート材の一端縁を前記線膨張係数の大きな
一方の部材にろう付けし、ろう付けの完了後に前記イン
サート材の他端縁を線膨張係数が小さな他方の部材に溶
融接合することを特徴とする異種材料の接合方法。1. A joint for joining one member having a large linear expansion coefficient to another member having a small linear expansion coefficient as compared with the member, the joint having substantially the same coefficient as the one member having a large linear expansion coefficient. A member having a linear expansion coefficient is used as an insert material, one end edge of the insert material is brazed to one of the members having a large linear expansion coefficient, and after completion of brazing, the other end edge of the insert material has a small linear expansion coefficient. A method for joining dissimilar materials, wherein the joining is performed by fusion bonding to another member.
材と、前記部材に比して線膨張係数の小さなニオブ製の
部材とを接合する継手において、前記線膨張係数の大き
なステンレス鋼製の部材と略同程度の線膨張係数をもつ
銅製の部材をインサート材として用い、インサート材の
一端縁をステンレス鋼製の部材にろう付けし、ろう付け
の完了後に前記インサート材の他端を線膨張係数が小さ
なニオブ製の部材に電子ビーム溶接によって溶融接合す
ることを特徴とする異種材料の接合方法。2. A joint for joining a stainless steel member having a large linear expansion coefficient to a niobium member having a small linear expansion coefficient as compared with said member, wherein the stainless steel member having a large linear expansion coefficient is used. A copper member having substantially the same linear expansion coefficient as that of the insert material is used, one end edge of the insert material is brazed to a stainless steel member, and after the brazing is completed, the other end of the insert material is subjected to a linear expansion coefficient. Is a method for joining dissimilar materials to a small niobium member by electron beam welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33632396A JP3342329B2 (en) | 1996-12-02 | 1996-12-02 | How to join dissimilar materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33632396A JP3342329B2 (en) | 1996-12-02 | 1996-12-02 | How to join dissimilar materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10156523A true JPH10156523A (en) | 1998-06-16 |
| JP3342329B2 JP3342329B2 (en) | 2002-11-05 |
Family
ID=18297938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33632396A Expired - Fee Related JP3342329B2 (en) | 1996-12-02 | 1996-12-02 | How to join dissimilar materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3342329B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833410A (en) * | 2022-07-05 | 2022-08-02 | 中机智能装备创新研究院(宁波)有限公司 | Method for reducing residual stress of heterogeneous brazed joint |
| CN114952196A (en) * | 2022-06-08 | 2022-08-30 | 中国科学院近代物理研究所 | Method for improving mechanical stability of superconducting cavity |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3470664A1 (en) * | 2017-10-13 | 2019-04-17 | Continental Automotive GmbH | Fuel rail assembly for a fuel injection system and method of manufacturing such a fuel rail assembly |
-
1996
- 1996-12-02 JP JP33632396A patent/JP3342329B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952196A (en) * | 2022-06-08 | 2022-08-30 | 中国科学院近代物理研究所 | Method for improving mechanical stability of superconducting cavity |
| CN114833410A (en) * | 2022-07-05 | 2022-08-02 | 中机智能装备创新研究院(宁波)有限公司 | Method for reducing residual stress of heterogeneous brazed joint |
| CN114833410B (en) * | 2022-07-05 | 2022-10-14 | 中机智能装备创新研究院(宁波)有限公司 | Method for reducing residual stress of heterogeneous brazed joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3342329B2 (en) | 2002-11-05 |
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