JPH09236188A - Brazing joint - Google Patents
Brazing jointInfo
- Publication number
- JPH09236188A JPH09236188A JP7120396A JP7120396A JPH09236188A JP H09236188 A JPH09236188 A JP H09236188A JP 7120396 A JP7120396 A JP 7120396A JP 7120396 A JP7120396 A JP 7120396A JP H09236188 A JPH09236188 A JP H09236188A
- Authority
- JP
- Japan
- Prior art keywords
- fitting portion
- brazing
- cylindrical portion
- diameter
- stepped surface
- 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
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、雄部材の円筒部
を雌部材の嵌合部に挿入し、嵌合部で両部材をろう付け
して構成したろう付け継手に関し、特に、流体用の配管
に用いられる、アルミニゥム系金属製のろう付け継手に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brazed joint in which a cylindrical portion of a male member is inserted into a fitting portion of a female member and both members are brazed at the fitting portion. The present invention relates to an aluminum-based metal brazing joint used for piping.
【０００２】[0002]
【従来の技術】従来、アルミニゥム系金属製の雄部材の
円筒部を、アルミニゥム系金属製の雌部材の嵌合部に挿
入し、嵌合部で両部材を、ろう付けして構成したろう付
け継手は、円筒部と嵌合部との間に均一な間隙を設け
て、この間隙にろうを流入させて両部材を接合してい
た。2. Description of the Related Art Conventionally, a brazing is made by inserting a cylindrical portion of a male member made of aluminum metal into a fitting portion of a female member made of aluminum metal and brazing both members at the fitting portion. In the joint, a uniform gap is provided between the cylindrical portion and the fitting portion, and the brazing material is caused to flow into the gap to join the two members.
【０００３】例えば、図３に示すように、円筒部５１の
接合部分にフラックスを塗ったアルミニゥム系金属製の
雄部材５０を、垂直に設置されたアルミニゥム系金属製
の雌部材６０の通孔６４を拡径して形成された嵌合部６
１に挿入し、円筒部５１の先端５１ａが嵌合部６１の奥
側に配設された段付面６１ｂに当接するまで押し込まれ
ている。また、円筒部５１の挿入されていない後端部分
５１ｂは、円筒部５１が傾斜しないように垂直に保持
（保持機構は図示せず）されている。円筒部５１は直柱
状の中空円筒であり、円筒部５１の外周面と嵌合部６１
の内周面との間には全周に渡って均等な間隙、例えば
０．１mm〜０．２mmのすきま、が介在するように形成さ
れている。この間隙を満たすろう７０は、線状で、円筒
部５１の外周に沿うように輪状に形成され、円筒部５１
を嵌合部６１に挿入するに先立って円筒部５１に嵌め被
せて嵌合部６１の開口６１ａに配置されている。両部材
の組み合わせ体は、この状態で、バーナー（図示せず）
で四方から加熱され、溶融したろうが間隙に流入され、
その後、空冷、水冷を経て冷却され、フラックスの残渣
を除去するために湯洗されて、ろう付け継手として形成
されている。For example, as shown in FIG. 3, a male member 50 made of aluminum metal whose flux is applied to a joint portion of a cylindrical portion 51 is inserted into a through hole 64 of a female member 60 made of aluminum metal vertically installed. Fitting part 6 formed by expanding the diameter of
1 and is pushed in until the tip 51a of the cylindrical portion 51 comes into contact with the stepped surface 61b arranged on the inner side of the fitting portion 61. Further, the rear end portion 51b of the cylindrical portion 51 into which the cylindrical portion 51 is not inserted is vertically held (a holding mechanism is not shown) so that the cylindrical portion 51 does not tilt. The cylindrical portion 51 is a hollow columnar cylinder, and the outer peripheral surface of the cylindrical portion 51 and the fitting portion 61 are
A uniform gap, for example, a clearance of 0.1 mm to 0.2 mm, is formed between the inner peripheral surface and the inner peripheral surface. The wax 70 that fills this gap is linear and formed in a ring shape along the outer periphery of the cylindrical portion 51.
Is inserted into the fitting portion 61, fitted over the cylindrical portion 51, and arranged in the opening 61 a of the fitting portion 61. In this state, the combination of both members is a burner (not shown).
It is heated from all sides with molten wax flowing into the gap,
After that, it is cooled through air cooling and water cooling, washed with hot water to remove the residue of the flux, and formed as a brazed joint.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ろう付
け継手においては、雄部材の円筒部内を流通する流体の
流路面積をせばめることのないように、雌部材の通孔の
内径、即ち段付面の内径は、円筒部の内径と略同径又は
それ以上で構成されていることが多く、円筒部の先端が
段付面と当接されている径方向の幅が狭い。そのため
に、間隙に流入したろうを完全に封止することができ
ず、間隙からこの当接面を通ってろうが流出するという
問題がある。特に、円筒部が傾斜して保持された時には
当接面でも傾きが生じるために、隙間の広い個所が生
じ、ろうの流出も顕著になる。また、ろう付け時にフラ
ックスとろうが反応して発生するガスや、ろうの間隙へ
の流入に伴う大気の巻き込み、又は閉じ込みによって、
ろうが充填されるべき間隙において空隙やピンホール等
が発生するという問題も生じる。ろうの流出によって
は、置きろう方式のろう付けであるために、間隙に供給
できるろうの絶対量が定まっていることから、ろう量に
不足が生じる。その結果、間隙が十分に満たされなく、
ろう切れやフィレットの未形成等を生じると同時に、ろ
うの流出によって、ろうが流出した部材表面は、ろうが
盛上って固着する。それによって、この面に他の機能部
品を当接、嵌合できない取付不良を生じさせる。また、
空隙やピンホールの発生によっては、接合されるべき個
所に空間が生じる。その結果、接合の強度が十分でなく
ろうづけ部の強度不足を生じ、また流体を扱う配管部材
においては、流体漏れを生じるという致命的な欠陥を生
じさせる。これらの欠陥を持つろう付け継手は、雄部材
と雌部材を溶融金属によって接合したものであるから、
欠陥品を手直しして、新規の部材と同様に再使用するこ
とはできず、すべての欠陥品は廃棄処分され、その損失
額も多大なものになっている。However, in the brazing joint, the inner diameter of the through hole of the female member, that is, the stepped portion, is provided so that the flow passage area of the fluid flowing in the cylindrical portion of the male member is not narrowed. The inner diameter of the surface is often substantially the same as or larger than the inner diameter of the cylindrical portion, and the width in the radial direction in which the tip of the cylindrical portion is in contact with the stepped surface is narrow. Therefore, there is a problem in that the wax that has flowed into the gap cannot be completely sealed, and the wax flows out from the gap through the contact surface. In particular, when the cylindrical portion is held in a tilted state, the contact surface is also tilted, so that a wide gap is generated and the wax flows out significantly. Also, due to the gas generated by the reaction between the flux and the brazing filler metal during brazing, and the inclusion or closure of the atmosphere accompanying the flow of the brazing filler metal into the gap,
There is also a problem that voids, pinholes, and the like are generated in the gap where the wax should be filled. Depending on the outflow of the brazing material, since the brazing is a brazing method, the absolute amount of the brazing material that can be supplied to the gap is fixed, so that the brazing amount becomes insufficient. As a result, the gap is not fully filled,
At the same time that the wax breaks, the fillet is not formed, or the like, the wax flows out and the surface of the member from which the wax flows out rises and sticks. As a result, another functional component cannot be brought into contact with or fitted to this surface, resulting in a mounting failure. Also,
Depending on the generation of voids or pinholes, a space is created at the place to be joined. As a result, the strength of the joint is not sufficient, the strength of the brazed portion is insufficient, and a fatal defect of causing fluid leakage occurs in a piping member that handles fluid. The brazed joint with these defects is a male member and a female member joined by molten metal,
Defective products cannot be reworked and reused like new parts, and all defective products are discarded, resulting in a large loss.
【０００５】本発明は上記問題点に鑑みて、ろう付部分
からのろうの流出、または／及びろう付け部分の空隙や
ピンホール等の発生を防止することによって、直接的に
は、ろう切れ、フィレットの未形成、取付不良、強度不
足、流体漏れ等の不良の低減により廃却損失を減少さ
せ、間接的には、ろう付け継手の完成後に実施する外観
検査や流体漏れの検査では発見できない接合部分の内部
の欠陥要素を減少し、より信頼度の高いろう付け継手を
提供することを目的とする。In view of the above problems, the present invention directly prevents wax from flowing out of the brazing portion and / or preventing voids and pinholes from occurring in the brazing portion. Welding loss is reduced by reducing defects such as unformed fillets, poor mounting, insufficient strength, and fluid leakage, and indirectly, joints that cannot be found by visual inspections or fluid leakage inspections performed after brazing joints are completed. It is an object of the present invention to reduce defective elements inside a portion and to provide a brazed joint with higher reliability.
【０００６】[0006]
【課題を解決するための手段】本願の発明は前記の課題
を解決するために、雄部材の円筒部が、雌部材の一端か
ら開穿された通孔の開口側内径を拡大して形成された嵌
合部に挿入され、該円筒部の先端が拡径によって形成さ
れた径方向外方に広がる段付面に当接され、嵌合部でろ
う付けされたろう付け継手であって、前記段付面が、挿
入された円筒部の先端の中空端面の外側の環状帯域に当
接され、当接された段付面の内径が軸線方向内方に延び
て直円部が形成され、該直円部の終端で段付面と並行で
且つ径方向内方に突出する環状並行面が突設され、該環
状並行面が前記中空端面の内側の環状帯域と、該直円部
を介して対峙し、環状内周溝を構成させることができ
る。In order to solve the above-mentioned problems, the invention of the present application is such that the cylindrical portion of the male member is formed by enlarging the inner diameter on the opening side of the through hole opened from one end of the female member. A brazed joint that is inserted into the fitting portion, a tip of the cylindrical portion is brought into contact with a stepped surface that expands in the radial direction formed by the diameter expansion, and is brazed at the fitting portion. The attached surface is brought into contact with an annular zone outside the hollow end face at the tip of the inserted cylindrical portion, and the inner diameter of the contacted stepped surface extends inward in the axial direction to form a right circular portion. An annular parallel surface protruding inward in the radial direction is provided at the end of the circular portion so as to be parallel to the stepped surface, and the annular parallel surface faces the annular zone inside the hollow end surface via the right circular portion. However, the annular inner peripheral groove can be formed.
【０００７】また、前記のように環状溝を形成すること
なく、嵌合部は、その全長、又は一部の範囲において、
その穴径が開口側から軸線方向内方に漏斗状に縮径され
て形成させることができる。Further, without forming the annular groove as described above, the fitting portion has its entire length or a partial range,
The hole diameter can be formed so as to be reduced in a funnel shape from the opening side inward in the axial direction.
【０００８】 また、前記の環状みぞの形成、及び漏斗
状の嵌合部の形成を合わせて用いても良い。Further, the formation of the annular groove and the formation of the funnel-shaped fitting portion may be used together.
【０００９】[0009]
【発明の実施の形態】以下、本発明の一実施の形態を図
面を用いて説明すると、図１は同実施形態に係るろう付
け継手を断面図により概略的に示したものである。基本
的には、従来のろう付け継手の、ろうが流出する問題に
対して、本発明では、ろうの流出する出口側に溝を設け
て、ろうの流出抵抗を形成して、ろうの流出を防止させ
ている。また、ろう付け部に空隙やピンホールの欠陥が
生じる問題に対して、ろう付け継手の接合部材の間隙
を、ろうの流入する開口側では広く、軸線方向の内方に
向かって狭く形成し、ろうの流入に変化を持たせ、ガス
や空気のとじ込みを低減させている。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a brazed joint according to the embodiment. Basically, in order to solve the problem of braze outflow of the conventional brazing joint, in the present invention, a groove is provided on the outlet side of the braze outflow to form a braze outflow resistance to prevent the outflow of braze. To prevent. In addition, with respect to the problem that voids and pinhole defects occur in the brazing portion, the gap of the joining member of the brazing joint is formed wide on the opening side into which the brazing material flows, and narrowed inward in the axial direction, The flow of wax is changed to reduce the entrapment of gas and air.
【００１０】図中の参照符号１１は、アルミニゥム系金
属製の雄部材１０の円筒部で、これが、アルミニゥム系
金属の雌部材２０の嵌合部２１に挿入されて、嵌合部２
１で両部材がろう付けされてろう付け継手が形成されて
いる。Reference numeral 11 in the figure is a cylindrical portion of a male member 10 made of aluminum-based metal, which is inserted into a fitting portion 21 of a female member 20 made of aluminum-based metal to obtain a fitting portion 2
At 1, both members are brazed to form a brazed joint.
【００１１】雄部材１０は円筒部１１を備えてなり、そ
の円筒部１１は、外径が一定の中空円筒体で形成されて
いる。雌部材２０は、その一端から開穿された通孔２４
を備えてなり、通孔２４の開口２１ａ側内径が雄部材１
０の円筒部１１が遊嵌できる寸法に拡径されて、嵌合部
２１が形成され、拡径によって径方向外方に広がる軸線
直角な段付面２１ｂが挿入される雄部材１０の円筒部１
１を係合するために用いられる。嵌合部２１の内径寸法
は、詳しくは、開口２１ａ側が大きく軸線方向内方中途
まで内方に向かい徐々に小さくなる漏斗状で形成され、
その後一定の内径寸法の部分が連接されている。漏斗状
の長さはこのように嵌合部２１の一部の範囲の長さを用
いて形成してもよいし、必要に応じて嵌合部２１の全長
に渡って形成されていてもよい。The male member 10 comprises a cylindrical portion 11, which is formed of a hollow cylindrical body having a constant outer diameter. The female member 20 has a through hole 24 opened from one end thereof.
And the inner diameter of the through hole 24 on the opening 21a side is the male member 1
The cylindrical portion of the male member 10 in which the fitting portion 21 is formed by expanding the diameter of the cylindrical portion 11 of 0 to allow loose fitting, and the stepped surface 21b perpendicular to the axis line that is expanded radially outward by the diameter expansion is inserted. 1
Used to engage 1. Specifically, the inner diameter of the fitting portion 21 is formed in a funnel shape in which the opening 21a side is large and gradually decreases inward toward the middle in the axial direction.
After that, the parts having a constant inner diameter are connected. The funnel-shaped length may be formed by using the length of a part of the fitting portion 21 as described above, or may be formed over the entire length of the fitting portion 21 as necessary. .
【００１２】段付面２１ｂは、前述のように、挿入され
る円筒部１１の先端１１ａが当接されて係止するが、段
付面２１ｂの内径Ｄ１は、円筒部１１の先端１１ａの中
空端面の内径Ｄ２と外径Ｄ３の略中間から外側の環状帯
域に当接されるように形成されている。そして、段付面
２１ｂの内径Ｄ１は軸線方向内方に溝幅Ｗだけ延びて直
円部２２を形成し、直円部２２の終端位置で、段付面２
１ｂと並行で、且つ径方向内方に突出する環状並行面２
３を形成し、通孔２４に至っている。この環状並行面２
３の内径は、通孔２４とは別途の内径に形成することも
できる。As described above, the stepped surface 21b is brought into contact with and locked by the tip 11a of the cylindrical portion 11 to be inserted. However, the inner diameter D1 of the stepped surface 21b is the hollow of the tip 11a of the cylindrical portion 11. It is formed so as to come into contact with the outer annular zone from approximately the middle of the inner diameter D2 and the outer diameter D3 of the end surface. The inner diameter D1 of the stepped surface 21b extends inward in the axial direction by the groove width W to form the right circular portion 22, and at the end position of the right circular portion 22, the stepped surface 2 is formed.
An annular parallel surface 2 parallel to 1b and protruding inward in the radial direction
3 is formed to reach the through hole 24. This circular parallel surface 2
The inner diameter of 3 may be formed to be different from the inner diameter of the through hole 24.
【００１３】このように形成された雌部材２０の嵌合部
２１に雄部材１０の円筒部１１を挿入すると、段付面２
１ｂで当接された円筒部１１の先端１１ａと、それに並
行な環状並行面２３とが直円部２２の溝幅Ｗを介して対
峙し、通孔２４に溝幅Ｗで、溝底径をＤ１とする環状の
内周溝を構成する。When the cylindrical portion 11 of the male member 10 is inserted into the fitting portion 21 of the female member 20 thus formed, the stepped surface 2
The tip end 11a of the cylindrical portion 11 abutted at 1b and the annular parallel surface 23 parallel thereto face each other via the groove width W of the right circular portion 22, and the groove width W is set in the through hole 24 with the groove bottom diameter. An annular inner peripheral groove is designated as D1.
【００１４】このように構成された段付面２１ｂにおけ
る通孔２４の環状の内周溝は、適切に設定した溝幅Ｗに
より、当接面２１ａから流出してくるろうが、環状溝に
流入して溝を充満させると流出抵抗を自生して、ろうの
流出を防止する。The annular inner circumferential groove of the through hole 24 in the stepped surface 21b thus constructed will flow out from the contact surface 21a by the appropriately set groove width W, but will flow into the annular groove. Then, when the groove is filled, the outflow resistance is naturally generated and the outflow of the wax is prevented.
【００１５】また、上記のように、嵌合部２１を軸線方
向に漏斗状に構成することにより、嵌合部２１と円筒部
１１との間に生じる間隙は開口２１ａ側では広く、軸線
方向内方に向かって狭く形成される。そのため、ろうが
流入する時に、ろうの流れに変化ができて、ろう付け時
にフラックスとろうが反応して発生するガスや空気の逃
げ道が確保でき、それらのガスや空気のとじ込みを回避
できる。これにより接合部に発生する空隙やピンホール
等が低減できる。Further, as described above, by forming the fitting portion 21 in a funnel shape in the axial direction, the gap formed between the fitting portion 21 and the cylindrical portion 11 is wide on the side of the opening 21a and is small in the axial direction. It is formed narrower toward you. Therefore, when the brazing material flows in, the flow of the brazing material can be changed, and an escape path for the gas or air generated by the reaction between the flux and the brazing material at the time of brazing can be secured, and the confinement of the gas or air can be avoided. This can reduce voids, pinholes, etc. generated at the joint.
【００１６】[0016]
【実施例】アルミニゥム系金属製である雄部材１０の円
筒部１１の外径Ｄ３は１２．０mm、内径Ｄ２は８．４mm
に形成されている。雌部材２０の一端から開穿された通
孔２４の内径は円筒部１１の内径Ｄ２と同じ寸法の８．
４mmに形成され、この内径を拡大した嵌合部２１の開口
２１ａ側の内径は１３．２mm、軸線方向の内方に４．５
mm延びた位置の内径は１２．２mmで、４．５mmの長さが
漏斗状に形成され、これに隣接して内径が１２．２mmの
直内径の部分が２．５mmの長さで続いて設けられてい
る。[Example] The outer diameter D3 of the cylindrical portion 11 of the male member 10 made of aluminum metal is 12.0 mm, and the inner diameter D2 is 8.4 mm.
Is formed. The inner diameter of the through hole 24 opened from one end of the female member 20 is the same as the inner diameter D2 of the cylindrical portion 11.
The inner diameter on the side of the opening 21a of the fitting portion 21 formed to have a diameter of 4 mm is 13.2 mm, and the inner diameter is 4.5 inward in the axial direction.
The inner diameter of the position extended by mm is 12.2 mm, the length of 4.5 mm is formed like a funnel, and the part of the direct inner diameter with the inner diameter of 12.2 mm is adjacent to this with the length of 2.5 mm. It is provided.
【００１７】雄部材１０の円筒部１１の先端１１ａを当
接している段付面２１ｂの内径Ｄ１は、１０．２mmに形
成されている。また、段付面２１ｂの外径は、前述の段
付面２１ｂにおける嵌合部２１の内径の１２．２mmであ
り、これにより形成される環状面が雄部材１０の円筒部
１１の先端１１ａと当接されている。これにより、円筒
部１１の先端１１ａの中空端面は、その中間点である直
径１０．２mmから、その外径である１２．０mmに至る範
囲の外側の環状帯域が段付面２１ｂによって当接されて
いる。また、段付面２１ｂの内径Ｄ１と同じである直円
部２２の内径は１０．２mmであり、その幅寸法Ｗは１．
５mmである。この直円部２２の終端位置で、段付面２１
ｂと並行で、且つ径方向内方に突出する環状並行面２３
が形成され、通孔２４の内径８．４mmに至っている。The inner diameter D1 of the stepped surface 21b with which the tip 11a of the cylindrical portion 11 of the male member 10 is in contact is formed to 10.2 mm. The outer diameter of the stepped surface 21b is 12.2 mm which is the inner diameter of the fitting portion 21 on the stepped surface 21b, and the annular surface formed by this is the same as the tip end 11a of the cylindrical portion 11 of the male member 10. Abutted. As a result, the hollow end surface of the tip end 11a of the cylindrical portion 11 is abutted by the stepped surface 21b on the outer annular band in the range from the diameter 10.2 mm which is the midpoint thereof to the outer diameter 12.0 mm. ing. Further, the inner diameter of the right circular portion 22 which is the same as the inner diameter D1 of the stepped surface 21b is 10.2 mm, and the width dimension W thereof is 1.
5 mm. At the end position of the right circular portion 22, the stepped surface 21
An annular parallel surface 23 that is parallel to b and projects inward in the radial direction.
Is formed, and the inner diameter of the through hole 24 reaches 8.4 mm.
【００１８】この結果、このように形成された雄部材１
０の円筒部１１と雌部材２０の嵌合部２１の組合せによ
って、段付面２１ｂの位置において、通孔２４の内周側
に溝底径が１０．２mmで幅Ｗが１．５mmの環状溝が構成
される。As a result, the male member 1 thus formed is formed.
The combination of the cylindrical portion 11 of 0 and the fitting portion 21 of the female member 20 has an annular shape having a groove bottom diameter of 10.2 mm and a width W of 1.5 mm at the inner peripheral side of the through hole 24 at the position of the stepped surface 21b. The groove is constructed.
【００１９】これらをろう付けするには、雄部材１０の
円筒部１１が雌部材２０の嵌合部２１に挿入される前
に、環状ろう３０は円筒部１１に外層され、円筒部１１
の挿入部分にはフラックスが塗られ、通孔２４が垂直に
なるように設置された雌部材２０の嵌合部２１に差し込
まれ、段付面２１ｂに当接するまで押入される。そし
て、挿入された円筒部１１が垂直になるように円筒部１
１の後端１１ｂが支持（支持機構は図示せず）される。
あらかじめ外挿されていた環状ろう３０は嵌合部２１の
開口２１ａ側に配置される。このような状態で、バーナ
ーによって四方から母材及びろう３０が加熱される。加
熱は、強火、中火等で行われ、その後、空冷、水冷等を
経て、フラックスの残渣を除去するために湯洗が実施さ
れる。To braze these, the annular brazing material 30 is provided as an outer layer on the cylindrical portion 11 before the cylindrical portion 11 of the male member 10 is inserted into the fitting portion 21 of the female member 20.
Flux is applied to the insertion part of the plug, and the through hole 24 is inserted into the fitting part 21 of the female member 20 installed so as to be vertical, and is pushed in until it comes into contact with the stepped surface 21b. The cylindrical portion 1 is inserted so that the inserted cylindrical portion 11 is vertical.
The rear end 11b of No. 1 is supported (a supporting mechanism is not shown).
The annular brazing material 30 that has been externally fitted in advance is arranged on the opening 21 a side of the fitting portion 21. In this state, the base material and the brazing material 30 are heated from all sides by the burner. The heating is performed by high heat, medium heat, or the like, and then, after air cooling, water cooling, or the like, hot water washing is performed to remove the residue of the flux.
【００２０】上記の方法で実施された結果、図２に示す
ように、ろうの流出は環状溝で阻止され、欠陥となるろ
うの流出はなかった。また溝幅Ｗを実施例の１．５mmか
ら変化させ、１．０mmから２．０mmに渡って実施して
も、ろうの流出はなかった。その結果、ろうは間隙を充
分に満たし、フィレット３１形状も弧状に形成され、フ
ィレット未形成はなかった。また、嵌合部２１を漏斗状
にすることによって、空隙やピンホールの発生は、従来
の発生率の約２０％から、約５％に減少できた。また発
生した空隙やピンホールは軽微になり、流体漏れの欠陥
を生じるものもなかった。この嵌合部２１の漏斗状の片
面側の傾き角は実施例の約７度から変化させ、２度から
８度に渡って実施しても、空隙やピンホールの発生は約
５％にとどまった。これらのことより本発明の効果が十
分に確認できた。As a result of carrying out the above-mentioned method, as shown in FIG. 2, the outflow of the wax was blocked by the annular groove, and no defective outflow of the wax was found. Even when the groove width W was changed from 1.5 mm in the embodiment and the groove width W was changed from 1.0 mm to 2.0 mm, no wax flowed out. As a result, the wax filled the gap sufficiently, the shape of the fillet 31 was also formed in an arc shape, and there was no fillet formation. Further, by making the fitting portion 21 funnel-shaped, the occurrence of voids and pinholes could be reduced from about 20% of the conventional occurrence rate to about 5%. In addition, the voids and pinholes generated were slight, and none of them caused defects of fluid leakage. The inclination angle of the fitting portion 21 on the one side of the funnel shape is changed from about 7 degrees in the embodiment, and even if it is performed from 2 degrees to 8 degrees, the generation of voids and pinholes is about 5%. It was From these things, the effect of the present invention was fully confirmed.
【００２１】尚、上記実施例に用いた各部材の数値やろ
う付けのやり方等は一例であって、本発明はこれによっ
て限定されるものではない。本発明の精神に基づき特許
請求の範囲内で種々変更が可能なことは当然である。例
えば、嵌合部２１の漏斗状の間隙寸法や長さ、直線部長
さ、段付面２１ｂの内径Ｄ３、環状溝の溝幅Ｗやその
他、実施例に用いた種々の数値等は、ろう付け継手の雄
部材１０や雌部材２０の材質やサイズ、フラックスやろ
うの特性などの組合せに応じて適宜変更して使用するこ
とができる。これらの変更が、あくまで、ろうの流出を
防止する環状溝を構成し、又は／及び空隙やピンホール
など気泡の発生を低減できる漏斗状の嵌合部２１を構成
する限りにおいて、なんら限定されるものではない。It should be noted that the numerical values of the respective members and the brazing method used in the above embodiments are merely examples, and the present invention is not limited thereto. It goes without saying that various modifications can be made within the scope of the claims based on the spirit of the present invention. For example, the funnel-shaped gap size and length of the fitting portion 21, the length of the straight line portion, the inner diameter D3 of the stepped surface 21b, the groove width W of the annular groove, and various other numerical values used in the embodiment are brazed. The male member 10 and the female member 20 of the joint can be appropriately changed and used in accordance with the combination of the material and size, the characteristics of the flux and the wax. These modifications are only limited as long as they form an annular groove for preventing the outflow of wax and / or a funnel-shaped fitting portion 21 that can reduce the generation of bubbles such as voids and pinholes. Not a thing.
【００２２】[0022]
【発明の効果】以上説明したように、本発明によれば、
ろう付け継手において、ろうの流出の欠陥は生じないの
で、ろう切れ、フィレットの未形成等の不良を生じるこ
となく、また、ろう付け部分の空隙やピンホール等の発
生も軽微に発生率も減少したので強度不足になることも
なく、流体漏れ等もなくなり、欠陥の低減により不良品
の廃却損失を減少できた。間接的には、ろう付け継手の
完成後に実施する流体漏れの検査では発見できない潜在
的な欠陥要素か減少したので、より信頼度の高いろう付
け継手を提供できるようになった。As described above, according to the present invention,
In brazing joints, no defects of braze outflow will occur, so there will be no defects such as brazing or fillet formation, and the occurrence rate of voids and pinholes in the brazing part will be slightly reduced. As a result, there is no lack of strength, there is no fluid leakage, etc., and defects can be reduced, thereby reducing the loss of scrap of defective products. Indirectly, it reduced the number of potential defects that could not be found in fluid leak inspections performed after the braze joint was completed, thus providing a more reliable braze joint.
【００２３】[0023]
【図１】本発明の一実施例に係り、ろう付け前の各部材
の配置を示す断面図である。FIG. 1 is a cross-sectional view showing an arrangement of respective members before brazing according to an embodiment of the present invention.
【図２】本発明の一実施例に係るろう付け継手を示す断
面図である。FIG. 2 is a cross-sectional view showing a brazed joint according to an embodiment of the present invention.
【図３】従来のろう付け継手に係り、ろう付け前の各部
材の状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state of each member before brazing according to a conventional brazing joint.
１０ 雄部材 １１ 円筒部 ２０ 雌部材 ２１ 嵌合部 ２１ａ 開口 ２１ｂ 段付面 ２２ 直円部 ２３ 環状並行面 ２４ 通孔 DESCRIPTION OF SYMBOLS 10 Male member 11 Cylindrical part 20 Female member 21 Fitting part 21a Opening 21b Stepped surface 22 Right circular part 23 Annular parallel surface 24 Through hole
Claims (3)
穿された通孔の開口側内径を拡大して形成された嵌合部
に挿入され、該円筒部の先端が拡径によって形成された
径方向外方に広がる段付面に当接され、該嵌合部でろう
付けされたろう付け継手であって、 前記段付面が、挿入された円筒部の先端の中空端面の外
側の環状帯域に当接され、当接された段付面の内径が軸
線方向内方に延びて直円部が形成され、該直円部の終端
で段付面と並行で且つ径方向内方に突出する環状並行面
が突設され、該環状並行面が前記中空端面の内側の環状
帯域と、該直円部を介して対峙し、環状内周溝を構成し
てなることを特徴としたろう付け継手。1. A cylindrical portion of a male member is inserted into a fitting portion formed by enlarging an opening side inner diameter of a through hole opened from one end of a female member, and a distal end of the cylindrical portion is expanded by a diameter expansion. A brazed joint that is abutted on a formed stepped surface that spreads outward in the radial direction and is brazed at the fitting portion, wherein the stepped surface is outside the hollow end surface of the tip of the inserted cylindrical portion. Of the stepped surface which is abutted to the annular zone, extends inward in the axial direction to form a right circular portion, and the end of the right circular portion is parallel to the stepped surface and is radially inward. A ring-shaped parallel surface is provided so as to project to the ring-shaped parallel surface, and the ring-shaped parallel surface faces the ring-shaped inner zone of the hollow end surface through the right circular portion to form a ring-shaped inner circumferential groove. Brazing joint.
穿された通孔の開口側内径を拡大して形成された嵌合部
に挿入され、該円筒部の先端が拡径によって形成された
径方向外方に広がる段付面に当接され、該嵌合部でろう
付けされたろう付け継手であって、 前記嵌合部は、その全長、又は一部の範囲において、そ
の穴径が開口側から軸線方向内方に漏斗状に縮径されて
形成されたことを特徴とするろう付け継手。2. The cylindrical portion of the male member is inserted into a fitting portion formed by enlarging the opening side inner diameter of the through hole opened from one end of the female member, and the tip of the cylindrical portion is expanded by the diameter expansion. A brazed joint that is abutted on a stepped surface that extends outward in the radial direction and that is brazed by the fitting portion, wherein the fitting portion has a hole in its entire length or in a partial range. A brazed joint characterized in that the diameter is reduced inward from the opening side in the axial direction in a funnel shape.
て、 前記嵌合部は、その全長、又は一部の範囲において、そ
の穴径が開口側から軸線方向内方に漏斗状に縮径されて
形成されたことを特徴とするろう付け継手。3. The brazed joint according to claim 1, wherein the fitting portion is formed such that the hole diameter is reduced in a funnel shape inward in the axial direction from the opening side in the entire length or a part of the fitting portion. Brazing joint characterized by being done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7120396A JPH09236188A (en) | 1996-02-29 | 1996-02-29 | Brazing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7120396A JPH09236188A (en) | 1996-02-29 | 1996-02-29 | Brazing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09236188A true JPH09236188A (en) | 1997-09-09 |
Family
ID=13453894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7120396A Pending JPH09236188A (en) | 1996-02-29 | 1996-02-29 | Brazing joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09236188A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005095586A (en) * | 2003-08-22 | 2005-04-14 | Pentax Corp | Joining method, joining body for unit parts for medical instrument and endoscope |
| JP2006167241A (en) * | 2004-12-17 | 2006-06-29 | Pentax Corp | Fixing part by brazing for pipe component of endoscope |
| JP2008196893A (en) * | 2007-02-09 | 2008-08-28 | Nagano Keiki Co Ltd | Bourdon tube mounting structure, pressure gauge, and bourdon tube mounting method |
| JP2008307250A (en) * | 2007-06-15 | 2008-12-25 | Fujinon Sano Kk | Casing assembly method and casing assembly apparatus, and valve for endoscope |
| JP2013164124A (en) * | 2012-02-10 | 2013-08-22 | Saginomiya Seisakusho Inc | Expansion valve |
| JP2014047872A (en) * | 2012-08-31 | 2014-03-17 | Maruichi Corp | Pipe joint |
| JP2015155752A (en) * | 2014-02-20 | 2015-08-27 | ヴァレオ、ビメーニーキィ、テプラ、コマンディトニー、スポルチェノストＶａｌｅｏ Ｖｙｍｅｎｉｋｙ Ｔｅｐｌａ Ｋ．Ｓ． | Connecting device and corresponding heat exchanger particularly for motor vehicle |
| EP3189922A1 (en) * | 2016-01-11 | 2017-07-12 | United Technologies Corporation | Advanced braze joint for tube-to-tube connection |
| JP2022095561A (en) * | 2020-12-15 | 2022-06-28 | テーイー オートモーティブ エンジニアリング センター（ハイデルベルク） ゲゼルシャフト ミット ベシュレンクテル ハフツング | Connecting element for pipe device and device |
| CN115246027A (en) * | 2021-04-26 | 2022-10-28 | 中国航发商用航空发动机有限责任公司 | Pipeline assembly, engine and pipeline assembly welding process |
-
1996
- 1996-02-29 JP JP7120396A patent/JPH09236188A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005095586A (en) * | 2003-08-22 | 2005-04-14 | Pentax Corp | Joining method, joining body for unit parts for medical instrument and endoscope |
| JP4555014B2 (en) * | 2003-08-22 | 2010-09-29 | Ｈｏｙａ株式会社 | Joining method, unit assembly for medical device, and endoscope |
| JP2006167241A (en) * | 2004-12-17 | 2006-06-29 | Pentax Corp | Fixing part by brazing for pipe component of endoscope |
| JP4531550B2 (en) * | 2004-12-17 | 2010-08-25 | Ｈｏｙａ株式会社 | Endoscope pipe part brazing fixing part |
| JP2008196893A (en) * | 2007-02-09 | 2008-08-28 | Nagano Keiki Co Ltd | Bourdon tube mounting structure, pressure gauge, and bourdon tube mounting method |
| JP2008307250A (en) * | 2007-06-15 | 2008-12-25 | Fujinon Sano Kk | Casing assembly method and casing assembly apparatus, and valve for endoscope |
| JP2013164124A (en) * | 2012-02-10 | 2013-08-22 | Saginomiya Seisakusho Inc | Expansion valve |
| JP2014047872A (en) * | 2012-08-31 | 2014-03-17 | Maruichi Corp | Pipe joint |
| JP2015155752A (en) * | 2014-02-20 | 2015-08-27 | ヴァレオ、ビメーニーキィ、テプラ、コマンディトニー、スポルチェノストＶａｌｅｏ Ｖｙｍｅｎｉｋｙ Ｔｅｐｌａ Ｋ．Ｓ． | Connecting device and corresponding heat exchanger particularly for motor vehicle |
| EP3189922A1 (en) * | 2016-01-11 | 2017-07-12 | United Technologies Corporation | Advanced braze joint for tube-to-tube connection |
| US10139023B2 (en) | 2016-01-11 | 2018-11-27 | United Technologies Corporation | Advanced braze joint for tube-to-tube connection |
| JP2022095561A (en) * | 2020-12-15 | 2022-06-28 | テーイー オートモーティブ エンジニアリング センター（ハイデルベルク） ゲゼルシャフト ミット ベシュレンクテル ハフツング | Connecting element for pipe device and device |
| US11920702B2 (en) | 2020-12-15 | 2024-03-05 | Ti Automotive Technology Center Gmbh | Connecting element for a pipe arrangement and arrangement |
| CN115246027A (en) * | 2021-04-26 | 2022-10-28 | 中国航发商用航空发动机有限责任公司 | Pipeline assembly, engine and pipeline assembly welding process |
| CN115246027B (en) * | 2021-04-26 | 2023-11-10 | 中国航发商用航空发动机有限责任公司 | Pipeline assembly, engine and pipeline assembly welding process |
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