JPS6390358A - Brazing method for aluminum casting - Google Patents
Brazing method for aluminum castingInfo
- Publication number
- JPS6390358A JPS6390358A JP23409686A JP23409686A JPS6390358A JP S6390358 A JPS6390358 A JP S6390358A JP 23409686 A JP23409686 A JP 23409686A JP 23409686 A JP23409686 A JP 23409686A JP S6390358 A JPS6390358 A JP S6390358A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- aluminum
- solder
- groove
- cutting
- 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
- 238000005219 brazing Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 title claims description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 31
- 238000005266 casting Methods 0.000 title claims description 19
- 238000005304 joining Methods 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 10
- 229910000679 solder Inorganic materials 0.000 abstract description 16
- 238000007796 conventional method Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、アルミニウム鋳物よりなる部品どおし、又
は該部品とアルミニウム展伸材よりなる部品とのろう付
方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method of brazing parts made of cast aluminum or parts made of wrought aluminum material.
なお、この明細書においてアルミニウムの用語は、その
合金を含む意味において用いるものとする。In this specification, the term aluminum is used to include its alloys.
従来の技術
アルミニウム鋳物には、鋳造性に優れた溶融点の低いア
ルミニウムを用いたものが多く、これらはろう材よりも
融点が低いためにろう付には適さないものである。しか
し、一部のアルミニウム鋳物にはろう材よりも融点の高
いアルミニウムを用いたものがあり、この場合にはろう
付し得る可能性を有する。BACKGROUND OF THE INVENTION Most conventional aluminum castings are made of aluminum with excellent castability and a low melting point, but these are not suitable for brazing because they have a lower melting point than a brazing material. However, some aluminum castings use aluminum whose melting point is higher than that of the brazing material, and in this case there is a possibility that it can be brazed.
ところが、アルミニウム鋳物の表面には、酸化物等を含
む表面皮膜が形成されており、これが有効なろう付を阻
害する。このため、アルミニウム鋳物よりなる部品どお
し、又は該部品とアルミニウム展伸材よりなる部品とを
ろう付しようとしてもそのままでは極めて困難である。However, a surface film containing oxides and the like is formed on the surface of aluminum castings, which inhibits effective brazing. For this reason, it is extremely difficult to braze parts made of cast aluminum or parts made of wrought aluminum with each other.
従って、ろう付に際し、アルミニウム鋳物よりなる部品
のろう甘子定面に形成された上記表面皮膜を除去した後
、ろう付を行う必要がある。Therefore, during brazing, it is necessary to remove the surface film formed on the solder surface of the aluminum casting component before brazing.
発明が解決しようとする問題点
しかしながら、上記のような皮膜除去処理を行っても、
ろう付中に溶融したろうの一部がアルミニウム鋳物の表
面皮膜に接触して、該皮膜と地肌の間に流れ込んでしま
い、接合間隙にろうが流れ込まない現象が生ずる。その
結果、所期するろう付が行われないという問題点があっ
た。Problems to be Solved by the Invention However, even if the above-mentioned film removal treatment is performed,
During brazing, a portion of the melted solder comes into contact with the surface coating of the aluminum casting and flows between the coating and the bare surface, resulting in a phenomenon in which the solder does not flow into the bonding gap. As a result, there was a problem in that the desired brazing was not performed.
この発明は、上述のような問題点を解消するためになさ
れたもので、アルミニウム鋳物よりなる部品どおし、又
は該部品とアルミニウム展伸材よりなる部品とを簡単に
、しかも確実に接合し得るろう付方法を呈示しようとす
るものである。This invention was made in order to solve the above-mentioned problems, and it is possible to easily and reliably join parts made of aluminum castings or parts made of aluminum wrought material. This is an attempt to present a brazing method that can be obtained.
問題点を解決する為の手段
上記目的において、発明者等は種々実験と研究を重ねた
結果、アルミニウム鋳物部品側のろう付予定部位の継ぎ
手形状を工夫することにより、良好なろう付が行なわれ
ることを見い出し、この発明を完成させるに至ったので
ある。Means for Solving the Problems For the above purpose, the inventors conducted various experiments and research, and found that good brazing can be achieved by devising the joint shape of the part to be brazed on the aluminum casting part side. This discovery led to the completion of this invention.
即ち、この発明に係るアルミニウム鋳物のろう付方法は
、アルミニウム鋳物よりなる部品どおし、又は該部品と
アルミニウム展伸材よりなる部品とをろう付するに際し
、アルミニウム鋳物部品側のろう付予定部位に切削加工
を施すことにより、該ろう付予定部位表面の有する酸化
物等を含む表面皮膜を除去すると共に、接合間隙に連通
しかつろう付中に溶融したろうを滞留させ得るろう溜用
溝を形成した後、ろう付を行なうこと特徴とするもので
ある。That is, in the method for brazing aluminum castings according to the present invention, when brazing parts made of aluminum castings or parts made of aluminum wrought material, By performing cutting on the surface, the surface film containing oxides, etc. on the surface of the area to be brazed is removed, and a groove for brazing is created that communicates with the joining gap and can retain the melted wax during brazing. The feature is that after forming, brazing is performed.
均質で丈夫なろう付が行なわれるようにするためには、
上記各接合部品について表面処理を行なう必要がある。To ensure uniform and durable brazing,
It is necessary to perform surface treatment on each of the above-mentioned bonded parts.
特に、アルミニウム鋳物よりなる部品の表面には、酸化
物や砂等を含む表面皮膜が形成されており、これらがろ
う付を害するので、そのままではろう付は困難である。In particular, a surface film containing oxides, sand, etc. is formed on the surface of parts made of cast aluminum, and these impair brazing, making it difficult to braze them as they are.
従って、ろう甘子定面、即ちろう付中に溶融したろうが
流れて広がり、ろうが凝固して固着すると予定される面
における表面皮膜を除去する皮膜除去処理を行なう必要
がある。Therefore, it is necessary to perform a film removal process to remove the surface film on the surface of the solder, that is, the surface where the melted wax flows and spreads during brazing, and where the solder is expected to solidify and stick.
しかしながら、上記処理のみでは未だ不充分である。何
故なら、皮膜除去処理を前記ろう甘子定面に限定して行
なった場合、ろう付中に溶融したろうが広がって上記処
理の行われていない、表面皮膜の形成された非ろう甘子
定面に到達する結果、接合間隙に流入されるべきろうの
一部が鋳物の表面皮膜と地肌との間に流入してしまい、
良好なろう付が行なわれなくなるからである。このよう
な現象が生じるのは、接合間隙における毛細管浸透力よ
りも鋳物の表面皮膜と地肌の間における毛細管浸透力の
方が優るからであると考えられる。However, the above treatment alone is still insufficient. This is because, if the film removal treatment is limited to the soldered Amako constant surface, the melted wax during brazing will spread to the non-waxed Amako constant surface on which the surface film has not been subjected to the above treatment. As a result, a portion of the wax that should have flowed into the joint gap flows between the surface film and the bare surface of the casting.
This is because good brazing will not be possible. It is thought that this phenomenon occurs because the capillary penetration force between the surface film and the bare surface of the casting is superior to the capillary penetration force in the bonding gap.
そこで、アルミニウム鋳物よりなる部品における接合部
を切削加工することにより、上記処理を行なうと共に、
接合間隙に連通しかつろう付中に溶融したろうを滞留さ
せ得るろう溜用溝を形成することとしたものである。Therefore, by cutting the joints of parts made of aluminum castings, the above treatment is carried out, and
A solder reservoir groove is formed that communicates with the joining gap and allows molten solder to stay there during brazing.
このようにろう溜用溝を形成することにより、従来法の
ようにろう付中に溶融したろうが表面皮膜に到達し、こ
の皮膜と地肌の間に流入するという不都合を回避し得る
。従って、溶融したろうは接合間隙に毛細管浸透力によ
って流入され、もって良好なろう付が行なわれることと
なる。By forming the wax reservoir groove in this manner, it is possible to avoid the disadvantage that the wax melted during brazing reaches the surface film and flows between the film and the skin, which is the case with conventional methods. Therefore, the molten solder flows into the joining gap by capillary osmotic force, resulting in good brazing.
なお、一方の部品がアルミニウム展伸材よりなるもので
ある場合には、該部品におけるろう甘子定面も、均質で
丈夫なろう付が行なわれるようにするために、適宜手段
により清浄にする必要がある。In addition, if one of the parts is made of aluminum wrought material, the soldering surface of the part must also be cleaned by appropriate means to ensure uniform and durable brazing. There is.
その後、従来既知の方法に従ってろう付を行なう。Thereafter, brazing is performed according to a conventionally known method.
炉中ろう骨法によってろう付する場合には、置きろう材
を前記溝内に嵌め込み、フラックスを塗布した後、炉中
にてろう付を行なえば良い。In the case of brazing by the furnace brazing method, the brazing filler metal may be fitted into the groove, flux applied, and then brazing may be performed in the furnace.
もっとも、フラックスを用いずに、リング状に形成した
プレージングシートを置きろう材として用い、これを前
記溝に嵌め込み、その後炉中にてろう付を行なうように
しても良い。However, without using flux, a ring-shaped plating sheet may be used as a brazing material, and this may be fitted into the groove, and then brazing may be performed in a furnace.
なお、この発明は上記炉中ろう付方法に限定されるもの
でなく、例えばトーチろう骨法等の他の方法によること
も許容される。Note that the present invention is not limited to the above-mentioned furnace brazing method, and other methods such as the torch brazing method are also acceptable.
発明の効果
この発明に係るアルミニウム鋳物のろう付方法は、アル
ミニウム鋳物部品側のろう付予定部位に切削加工を施す
ことにより、該ろう付予定部位表面の有する酸化物等を
含む表面皮膜を除去すると共に、接合間隙に連通しかつ
ろう付中に溶融したろうを滞留させ得るろう溝用溝を形
成した後、ろう付を行なうものであるから、下記実施例
の参酌によっても明らかなように、アルミニウム鋳物部
品の表面皮膜を除去する皮膜除去処理をろう付予定面に
ついてだけ行なう従来の方法のように、ろう付中に溶融
したろうが表面皮膜に到達することがない。従って、前
記皮膜と地肌の間にろうが流入して、接合間隙へのろう
の流入が阻害されるという不都合を回避し得、もって所
期するろう付を確実に行なうことができる。Effects of the Invention The method for brazing aluminum castings according to the present invention removes a surface film containing oxides, etc. on the surface of the part to be brazed by cutting the part to be brazed on the aluminum casting part side. At the same time, since brazing is performed after forming a brazing groove that communicates with the joining gap and can retain molten solder during brazing, as is clear from the following examples, aluminum Unlike conventional methods in which film removal treatment for removing the surface film of cast parts is performed only on the surfaces to be brazed, the melted wax during brazing does not reach the surface film. Therefore, it is possible to avoid the inconvenience of the solder flowing between the film and the surface and inhibiting the flow of the solder into the joining gap, thereby making it possible to reliably perform the desired brazing.
また、上記皮膜除去処理およびろう溝用溝の形成は、切
削加工により行なうものであるから、それに要する手間
も従来の方法と較べてほとんど変らず、ろう付製品の量
産を可能とし得る。In addition, since the film removal process and the formation of the brazing grooves are performed by cutting, the effort required is almost the same compared to conventional methods, and mass production of brazed products can be made possible.
実施例 次に、この発明の実施例を参照して説明する。Example Next, the present invention will be described with reference to embodiments.
第１図に示すように、砂型鋳造法により鋳造した、ＡΩ
−Ｍｇ−Ｚｎ系アルミニウム鋳物よりなる管継手（１）
と、Ａ６０６３６０６３アルミニウムし材からなるパイ
プ（２）とをろう付しようとするものである。As shown in Figure 1, AΩ
- Pipe fitting made of Mg-Zn aluminum casting (1)
and a pipe (2) made of A60636063 aluminum material.
上記管継手（１）は、下端にフランジ（３）を有すると
共に、上部の径大部とその下部の径小部とを有する軸線
方向に沿って形成された貫通孔（４）を備えたものであ
る。The pipe joint (1) has a flange (3) at the lower end, and a through hole (4) formed along the axial direction and having a large diameter portion at the top and a small diameter portion at the bottom. It is.
上記管継手（１）とパイプ（２）とをろう付するに際し
て、管継手（１）におけるろう付予定部位（１ａ）に切
削加工を施すことにより、ろうせ子定該部位（１ａ）表
面の有する酸化物等の含まれた表面皮膜（５）を除去す
ると共に、前記貫通孔（４）の上端隅部を削り取って接
合間隙（６）に連通ずる環状のろう溝用溝（１ｂ）を形
成する。このろう溝用溝（ｌｂ）は、ろう付中に溶融し
たろうを滞留させて該ろうが非切削面に残留した表面皮
膜に接触しないような大きさに設定する。When brazing the pipe fitting (1) and the pipe (2), cutting is performed on the brazing area (1a) of the pipe fitting (1) to improve the surface of the brazing area (1a). At the same time, the upper corner of the through hole (4) is scraped off to form an annular brazing groove (1b) that communicates with the bonding gap (6). do. This solder groove groove (lb) is set to a size such that melted solder remains during brazing and does not come into contact with the surface film remaining on the non-cut surface.
一方、パイプ（２）の一端部を適宜手段により洗浄する
。Meanwhile, one end of the pipe (2) is cleaned by appropriate means.
そして、このパイプ（２）の一端部を管継手（１）の貫
通孔（４）の径大部内に、所定の接合間隙（６）を形成
せしめた状態として嵌め合わせる。Then, one end of this pipe (2) is fitted into the large diameter portion of the through hole (4) of the pipe joint (1) with a predetermined joining gap (6) formed therein.
次いで、Ａ４０４７アルミニウム合金からなる置きろう
材（７）を、前記ろう溝用溝（１ｂ）内に嵌め込み、フ
ラックス（８）を塗布した後、炉中ろう付を行なった。Next, a brazing material (7) made of A4047 aluminum alloy was fitted into the brazing groove (1b), and after applying flux (8), furnace brazing was performed.
ここに、ろう付条件は、６００ ’Ｃで３分間加熱する
ものとした。Here, the brazing conditions were heating at 600'C for 3 minutes.
これによって得られた接合物は、第２図に示すように、
ろう（７）が管継手（１）の表面皮膜（５）と地肌の間
に流入するようなことなく、所期した良好なろう付が行
なわれたことが確認六わた−
また、この発明を従来の方法と比較するために、上記実
施例とまったく同様の部品をろう付するに際し、第３図
に示すように、管継手（１）における皮膜除去処理をろ
う付予定面である接合部位の上端面（ｌｃ）について行
ない、上記実施例のようなろう溜め用溝は形成しなかっ
た。The resulting bonded product is as shown in Figure 2.
It was confirmed that the desired good brazing was achieved without the wax (7) flowing between the surface film (5) of the pipe joint (1) and the bare surface. In order to compare with the conventional method, when brazing parts exactly similar to those in the above example, the film removal process on the pipe joint (1) was performed on the joining area, which is the surface to be brazed, as shown in Fig. 3. This was done on the upper end surface (lc), and no wax reservoir groove was formed as in the above embodiment.
他の条件は上記実施例と全く同様とした。Other conditions were exactly the same as in the above example.
その結果、従来法による場合は、第４図に示すように、
ろう（７）の一部が管継手（１）の外周面の上部におけ
る表面皮膜（５）と地肌の間に流入してしまい、接合間
隙（６）には流入されず、所期したろう付は行われなか
った。この結果より、本発明に係る方法によれば一段と
確実にろう付されることを確認し得た。As a result, when using the conventional method, as shown in Figure 4,
A part of the solder (7) flows between the surface film (5) and the bare surface on the upper part of the outer peripheral surface of the pipe fitting (1), and does not flow into the joint gap (6), resulting in the brazing not being as expected. was not carried out. From this result, it was confirmed that the method according to the present invention enables more reliable brazing.
Claims (1)
するに際し、アルミニウム鋳物部品側のろう付予定部位
に切削加工を施すことにより、該ろう付予定部位表面の
有する酸化物等を含む表面皮膜を除去すると共に、接合
間隙に連通しかつろう付中に溶融したろうを滞留させ得
るろう溜用溝を形成した後、ろう付を行なうことを特徴
とするアルミニウム鋳物のろう付方法。[Claims] When brazing parts made of aluminum casting or parts made of aluminum wrought material, by cutting the part to be brazed on the aluminum casting part side, After removing the surface film containing oxides, etc. on the surface of the area to be brazed, and forming a brazing groove that communicates with the joining gap and can retain the melted wax during brazing, brazing is performed. A method for brazing aluminum castings.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23409686A JPS6390358A (en) | 1986-09-30 | 1986-09-30 | Brazing method for aluminum casting |
| US07/065,461 US4829944A (en) | 1986-06-25 | 1987-06-23 | Intake manifold and process for producing same |
| DE3750638T DE3750638T2 (en) | 1986-06-25 | 1987-06-24 | Intake manifold. |
| EP87109079A EP0251180B1 (en) | 1986-06-25 | 1987-06-24 | Intake manifold and process for producing same |
| MX007060A MX170915B (en) | 1986-06-25 | 1987-06-24 | ADMISSION MULTIPLE AND PROCEDURE TO MANUFACTURE THE SAME |
| EP91112784A EP0464860B1 (en) | 1986-06-25 | 1987-06-24 | Intake manifold |
| DE3788681T DE3788681T2 (en) | 1986-06-25 | 1987-06-24 | Intake manifold and process for its manufacture. |
| CA000540440A CA1279538C (en) | 1986-06-25 | 1987-06-24 | Intake manifold and process for producing same |
| KR1019870006454A KR900003863B1 (en) | 1986-06-25 | 1987-06-25 | Intake manifold and process for producing same |
| US07/271,269 US4887557A (en) | 1986-06-25 | 1988-11-15 | Process for producing an intake manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23409686A JPS6390358A (en) | 1986-09-30 | 1986-09-30 | Brazing method for aluminum casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6390358A true JPS6390358A (en) | 1988-04-21 |
Family
ID=16965557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23409686A Pending JPS6390358A (en) | 1986-06-25 | 1986-09-30 | Brazing method for aluminum casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6390358A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08118003A (en) * | 1994-10-19 | 1996-05-14 | Nec Corp | Antenna and its manufacture |
| JP2008503353A (en) * | 2004-06-24 | 2008-02-07 | スネクマ・プロピュルシオン・ソリド | Method for soldering composite parts |
| JP2014061810A (en) * | 2012-09-21 | 2014-04-10 | Denso Corp | Heat pump-type cooling and heating air conditioner |
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|---|---|---|---|---|
| JPS4942552A (en) * | 1972-05-23 | 1974-04-22 | ||
| JPS55100870A (en) * | 1979-01-24 | 1980-08-01 | Pioneer Electronic Corp | Pretreating method for soldering aluminum wire |
| JPS5614071A (en) * | 1979-07-17 | 1981-02-10 | Nec Home Electronics Ltd | Soldering method of member comprising aluminum |
| JPS5639231U (en) * | 1979-08-31 | 1981-04-13 | ||
| JPS5913567A (en) * | 1982-07-16 | 1984-01-24 | Nissan Motor Co Ltd | Brazing method of tube and mouthpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4942552A (en) * | 1972-05-23 | 1974-04-22 | ||
| JPS55100870A (en) * | 1979-01-24 | 1980-08-01 | Pioneer Electronic Corp | Pretreating method for soldering aluminum wire |
| JPS5614071A (en) * | 1979-07-17 | 1981-02-10 | Nec Home Electronics Ltd | Soldering method of member comprising aluminum |
| JPS5639231U (en) * | 1979-08-31 | 1981-04-13 | ||
| JPS5913567A (en) * | 1982-07-16 | 1984-01-24 | Nissan Motor Co Ltd | Brazing method of tube and mouthpiece |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08118003A (en) * | 1994-10-19 | 1996-05-14 | Nec Corp | Antenna and its manufacture |
| JP2008503353A (en) * | 2004-06-24 | 2008-02-07 | スネクマ・プロピュルシオン・ソリド | Method for soldering composite parts |
| JP2014061810A (en) * | 2012-09-21 | 2014-04-10 | Denso Corp | Heat pump-type cooling and heating air conditioner |
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