JPH0623536A - Method for brazing aluminum or aluminum alloy - Google Patents

Method for brazing aluminum or aluminum alloy

Info

Publication number
JPH0623536A
JPH0623536A JP17068092A JP17068092A JPH0623536A JP H0623536 A JPH0623536 A JP H0623536A JP 17068092 A JP17068092 A JP 17068092A JP 17068092 A JP17068092 A JP 17068092A JP H0623536 A JPH0623536 A JP H0623536A
Authority
JP
Japan
Prior art keywords
flux
brazing
filler metal
fluoride
aluminum
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
Application number
JP17068092A
Other languages
Japanese (ja)
Inventor
Yasuhiro Osame
康弘 納
Shoichi Sato
昭一 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Aluminum Can Corp
Original Assignee
Showa Aluminum Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP17068092A priority Critical patent/JPH0623536A/en
Publication of JPH0623536A publication Critical patent/JPH0623536A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent the sagging of the flux or irregularity of color or the like by the residual flux on the surface of the brazed work when the dispersion of the coating amount of the flux is large, or when the coating amount of the flux is large in the brazing of fluoride flux of the aluminum, the aluminum alloy or the like. CONSTITUTION:A brazing filler metal is used where the fluoride flux particles 3 are dispersed in the embedded manner in the metallic powder 2 for Al brazing material. The brazing filler metal is fed to the part to be joined of the aluminum or the aluminum alloy to be joined, and the brazing filler metal is heated. The fluoride flux contained in the brazing filler metal shows its ability, making it unnecessary to coat the flux suspension. The amount of the flux adhesion can easily be adjusted by adjusting the amount of the flux to be dispersed in the powder 2 for the Al brazing filler metal, leading to prevention of a large amount of flux adhesion.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、自動車用ラジエー
タ、カークーラー用エバポレータ及びコンデンサ、その
他電機、機械用熱交換器、エア・インテイクマニホルド
などのアルミニウム製品の製造、またはアルミニウムと
異種金属との接合に用いられるアルミニウムまたはその
合金材のろう付方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of aluminum products such as radiators for automobiles, evaporators and condensers for car coolers, other electric machines, heat exchangers for machines, air intake manifolds, or the joining of aluminum and dissimilar metals. The present invention relates to a brazing method of aluminum or its alloy material used in.

【0002】[0002]

【従来の技術および課題】従来、アルミニウムまたはそ
の合金材のろう付やアルミニウムと異種金属とのろう付
をフッ化物系フラックスを用いたろう付により行う場
合、接合部にろう材を供給するとともにフラックスを懸
濁液の塗布等により付着せしめ、この状態で加熱するこ
とにより行われていた。
2. Description of the Related Art Conventionally, when brazing aluminum or its alloy material or brazing aluminum with a dissimilar metal by brazing using a fluoride type flux, the brazing material is supplied to the joint portion and the flux is supplied. It was carried out by applying a suspension or the like to make it adhere and then heating in this state.

【0003】しかしながら、かかる従来のフラックスろ
う付けでは、ろう材とフラックスとを接合部に別々に供
給しなければならないため、作業が面倒であった。しか
も、塗布したフラックス量にバラツキを生じるうえ、塗
布量が多い場合にはろう付中にフラックスの垂れを生じ
てろう付炉を汚染するとか、ろう付品表面にフラックス
が多量に残留して色調ムラを呈する等の問題があった。
However, in such a conventional flux brazing, the brazing filler metal and the flux have to be separately supplied to the joint, so that the work is troublesome. Moreover, the amount of applied flux varies, and when the amount of applied flux is large, the flux drips during brazing and contaminates the brazing furnace. There were problems such as unevenness.

【0004】この発明は係る技術的背景に鑑みてなされ
たものであって、アルミニウムまたはその合金材のフッ
化物系フラックスろう付において、フラックス塗布量の
バラツキや塗布量が多い場合のフラックスの垂れ、ろう
付品表面の残留フラックスによる色ムラ等を防止しうる
ろう付方法の提供を目的とする。
The present invention has been made in view of the above technical background, and in the fluoride-based flux brazing of aluminum or its alloy material, the variation of the flux application amount or the sagging of the flux when the application amount is large, An object of the present invention is to provide a brazing method capable of preventing color unevenness due to residual flux on the surface of the brazed product.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
に、この発明は、Alろう材用金属粉末にフッ化物系フ
ラックス粒子が埋込み状態に分散されたろう材を用い、
該ろう材を、接合すべきアルミニウムまたはその合金材
の被接合部に供給し、加熱してろう付を行うことを特徴
とするアルミニウムまたはその合金材のろう付方法を要
旨とするものである。
In order to achieve the above object, the present invention uses a brazing filler metal in which fluoride type flux particles are embedded in an Al brazing filler metal powder,
The gist is a method for brazing aluminum or its alloy material, which comprises supplying the brazing material to a portion to be joined of aluminum or its alloy material to be joined and heating it for brazing.

【0006】上記において、Alろう材用の金属粉末と
しては、Si:3〜15wt%程度含有するAl−Si系
合金粉末や、あるいは必要に応じてさらに強度及び耐食
性等の向上の目的のために、Mg:0.1〜5.0wt%
程度、Zn:0.1〜3.0wt%程度等の1種または2
種以上を含有したAl−Si−Mg系、Al−Si−Z
n系、Al−Si−Mg−Zn系等の各合金粉末を用い
ても良い。また、ろう材を製作するための出発物の段階
では必ずしも合金粉末の形で用いなければならないもの
ではなく、Al、Si、Mg、Zn等の金属単体の粉末
を用いても良い。
In the above, as the metal powder for the Al brazing material, an Al-Si alloy powder containing Si: about 3 to 15 wt% or, if necessary, for the purpose of further improving strength and corrosion resistance. , Mg: 0.1 to 5.0 wt%
Degree, Zn: 0.1 to 3.0 wt% or the like, or two
Al-Si-Mg system containing at least one kind, Al-Si-Z
You may use each n-type, Al-Si-Mg-Zn type | system | group alloy powder. Further, it is not always necessary to use it in the form of alloy powder at the stage of starting material for producing the brazing material, and powder of a simple metal such as Al, Si, Mg, Zn may be used.

【0007】前記フッ化物系フラックスの種類は特に限
定されるものではないが、有効なフラックス作用を発揮
させるために、605℃程度以下で溶融するフッ化物系
混合あるいは単体フラックスを用いれば良い。例えばフ
ッ化カリウム(KF)とフッ化アルミニウム(Al
3 )とを45.8〜54.2の共晶組成ないしはそれ
に近い組成範囲に含んで実質的に錯体化されたフルオロ
アルミン酸カリウム錯体、KαAlFα+3(ただしαは
1以上の正数)で表される錯体化物、KF+AlF3
合物等を用いれば良い。また、CsαAlFα+3、KS
nF3 、KZnF3を主成分とするものでも良い。ま
た、フッ化カリウム(KF)とフッ化アルミニウム(A
lF3 )の錯体物でCsFを含有するものを主成分とす
るフラックスでも良い。この場合、CsFはフラックス
の融点を低下させるのに有効なものであるが、10wt%
を越えると融点を高め、かえってろう付性を阻害するた
めCsFを含有せしめる場合には10wt%以下とするの
が良い。また、上記例示した各種フッ化物系フラックス
にSnF2 、ZnF2 の1種または2種を0.1〜10
wt%添加することも推奨される。この理由はフラックス
の融点を低下させ、ろう材の濡れ性促進に有効だからで
あり、0.1wt%未満ではろう濡れ促進の効果がなく、
10wt%を越えるとフラックス融点を高め、却ってろう
付性を阻害する。
The type of the fluoride-based flux is not particularly limited, but in order to exert an effective flux action, a fluoride-based mixture or a simple substance flux that melts at about 605 ° C. or lower may be used. For example, potassium fluoride (KF) and aluminum fluoride (Al
F 3) and a comprise substantially complexed been fluoroaluminate potassium complex eutectic composition or a composition range close to that of 45.8~54.2, KαAlFα + 3 (provided that α is 1 or more positive) A complex compound represented by the formula, a KF + AlF 3 mixture, or the like may be used. Also, CsαAlFα + 3, KS
A material containing nF 3 or KZnF 3 as a main component may be used. In addition, potassium fluoride (KF) and aluminum fluoride (A
A flux containing a CsF-containing complex as a main component in the complex of 1F 3 ) may be used. In this case, CsF is effective for lowering the melting point of the flux, but 10 wt%
If the content of CsF is higher than 10 wt%, the melting point will be increased and the brazing property will be adversely affected. Further, one or two kinds of SnF 2 and ZnF 2 are added to the above-exemplified various fluoride-based fluxes in an amount of 0.1 to 10
It is also recommended to add wt%. The reason for this is that the melting point of the flux is lowered and it is effective for promoting the wettability of the brazing material.
If it exceeds 10% by weight, the melting point of the flux is increased, which rather hinders the brazing property.

【0008】次に、この発明に用いるろう材の製造方法
の一例を示すと次のとおりである。即ち、まず、Alろ
う材用金属粉末とフッ化物系フラックス粉末とを高エネ
ルギー混合法により混合する。混合比率は体積比におい
てろう材用金属粉末:フッ化物系フラックス粉末=9
9.9:0.1〜50:50の割合に設定するのが良
い。フラックス量が体積比で99.9:0.1よりも少
ない場合即ち0.1%未満の場合には、その後のろう付
において十分なフラックス作用を発揮できずろう付が困
難となる恐れがあるからである。一方、50:50より
もフラックス量が多すぎる場合即ちフラックス量が50
%を越える場合には、フラックスが多すぎてフラックス
の垂れを生じろう付炉を汚染するとか、ろう付品表面に
多量の残留フラックスを生じて色調ムラを呈する等の不
都合を生じる危険がある。Alろう材用金属粉末とフッ
化物系フラックス粉末との特に好ましい混合比率は体積
比で99.5:0.5〜70:30である。また、ろう
材用粉末へのフッ化物系フラックスの均一埋込みを図る
ために、ろう材用粉末の粒径を20〜1000μm、好
ましくは100〜1000μmに設定しておくのが良
く、フラックス粉末の粒径を20〜200μm、好まし
くは20〜100μmに設定しておくのが良い。
Next, an example of a method for manufacturing the brazing filler metal used in the present invention is as follows. That is, first, the metal powder for Al brazing material and the fluoride-based flux powder are mixed by a high energy mixing method. The mixing ratio in volume ratio is brazing filler metal powder: fluoride-based flux powder = 9
It is better to set the ratio to 9.9: 0.1 to 50:50. When the amount of flux is less than 99.9: 0.1 by volume ratio, that is, less than 0.1%, a sufficient flux action may not be exhibited in subsequent brazing, and brazing may be difficult. Because. On the other hand, when the amount of flux is too much larger than 50:50, that is, the amount of flux is 50
If it exceeds%, there is a risk that there is too much flux and dripping of the flux occurs to contaminate the brazing furnace, or there is a large amount of residual flux on the surface of the brazed product, resulting in uneven color tone. A particularly preferable mixing ratio of the Al brazing filler metal powder and the fluoride flux powder is 99.5: 0.5 to 70:30 by volume. Further, in order to uniformly embed the fluoride flux in the brazing filler metal powder, it is preferable to set the brazing filler metal powder particle size to 20 to 1000 μm, preferably 100 to 1000 μm. The diameter is set to 20 to 200 μm, preferably 20 to 100 μm.

【0009】ろう材用粉末とフッ化物系フラックス粉末
とを混合するための高エネルギー混合法は、両粉末に強
い圧縮力ないしは衝撃力を付与しつつ混合することによ
り、ろう材用金属粒子中にフラックス粒子を機械的に分
散させる混合法である。具体的には、例えば高エネルギ
ーボールミルやアトライターを用いた方法を挙げ得る。
高エネルギーボールミル処理は、図1(イ)に示すよう
に、容器(1)内にAlろう材用金属粉末(2)とフラ
ックス粉末(3)とを投入するとともにAl23 ボー
ルまたは鋼球(4)を入れ、この状態で同図(ロ)のよ
うにミルを回転させることにより、ボールまたは鋼球
(4)の落下衝撃力を粉末に作用させながら混合するも
のである。また、アトライターによる方法は、図2
(イ)(ロ)に示すように、Alろう材用金属粉末
(2)、フラックス粉末(3)及びAl2 3 ボールま
たは鋼球(4)を収容した容器(1)内で、撹拌アーム
(5a)の多数突出した攪拌棒(5)を回転させることに
より圧縮力を加えつつ混合するものである。このような
高エネルギーボールミルやアトライターを用いて混合す
ることにより、一部は複合粉となりさらにフラックス粉
末が複合されて、図3に示すようにろう材用金属粒子
(6)にフラックス粒子(7)が埋込み状態に機械的に
均一分散されたろう材粉末が生成される。
The high-energy mixing method for mixing the brazing filler metal powder and the fluoride-based flux powder is carried out by applying a strong compressive force or impact force to both powders so that the brazing filler metal powder is mixed into the brazing filler metal particles. This is a mixing method in which flux particles are mechanically dispersed. Specifically, for example, a method using a high energy ball mill or an attritor can be mentioned.
In the high energy ball mill treatment, as shown in FIG. 1 (a), a metal powder (2) for Al brazing material and a flux powder (3) are put into a container (1) and Al 2 O 3 balls or steel balls are added. (4) is put in, and in this state, the mill is rotated as shown in (b) of the figure, and the falling impact force of the balls or steel balls (4) is applied to the powder to mix them. The method using an attritor is shown in FIG.
(A) As shown in (b), a stirring arm is placed in a container (1) containing a metal powder (2) for Al brazing material, a flux powder (3) and an Al 2 O 3 ball or a steel ball (4). The stirring bar (5) having a large number of protrusions (5a) is rotated to mix while applying a compressive force. By mixing using such a high energy ball mill or an attritor, a part becomes a composite powder, and the flux powder is further composited, and as shown in FIG. 3, the brazing filler metal particles (6) are mixed with the flux particles (7). ) Is mechanically and uniformly dispersed in the embedded state to produce a brazing filler metal powder.

【0010】上記により製作したフラックス埋込みろう
材粉末を用いてろう付を行うが、ろう材粉末はこれをア
ルコール系溶剤や水等に懸濁させた後、この懸濁液を接
合すべきアルミニウムまたはその合金材の被接合部に塗
布する。混合フラックス量を一定範囲に規定すること
で、フラックス付着量に過不足を生じることなく、均一
に塗布することができる。
Brazing is performed using the flux-embedded brazing filler metal powder prepared as described above. The brazing filler metal powder is suspended in an alcohol solvent, water, etc., and then the suspension is bonded to aluminum or It is applied to the part to be joined of the alloy material. By defining the mixed flux amount within a certain range, it is possible to apply the flux uniformly without causing excess or deficiency in the flux adhesion amount.

【0011】次に、接合部材を加熱してろう付を行う。
ろう材粉末に埋込まれたフッ化物系フラックスの作用に
より接合部の表面酸化膜が除去され、ろう材が濡れ拡が
って、フラックスを別途塗布した場合と同様に良好かつ
強固なろう付接合が達成される。従って、フラックスを
別途塗布する必要はもはやなくなる。
Next, the joining member is heated to perform brazing.
The surface oxide film at the joint is removed by the action of the fluoride flux embedded in the brazing filler metal powder, the brazing filler metal spreads wet, and good and strong brazing joining is achieved as if flux was applied separately. To be done. Therefore, it is no longer necessary to separately apply the flux.

【0012】[0012]

【実施例】次に、この発明の実施例を説明する。Embodiments of the present invention will be described below.

【0013】(実施例1)ろう材用金属粉末として、A
l−10wt%Si合金粉末(平均粒径140μm)を用
意した。また、フッ化物系フラックス粉末として、KA
lF4 にSnF2を5wt%含有せしめたもの(平均粒径
74μm)を用意した。
Example 1 As a metal powder for brazing material, A
1-10 wt% Si alloy powder (average particle size 140 μm) was prepared. In addition, as a fluoride-based flux powder, KA
1F 4 containing 5 wt% SnF 2 (average particle size 74 μm) was prepared.

【0014】次に、上記のろう材用金属粉末とフラック
ス粉末を、体積比95:5に設定してアトライターによ
り混合し、フラックス埋込みろう材粉末を製造した。
Next, the brazing filler metal powder and the flux powder were mixed in an attritor at a volume ratio of 95: 5 to produce a flux-embedded brazing filler metal powder.

【0015】一方、肉厚0.8mmのA1100Al合
金製押出チューブとA3003Al合金製フィン材とを
コルゲート型熱交換器に組み立てた。そして、上記のフ
ラックス埋込みろう材粉末を水に懸濁し、この懸濁液を
前記熱交換器組立物に均一に塗布したのち、N2 雰囲気
中で600℃×5分加熱してろう付を行った。
On the other hand, an extruded tube made of A1100Al alloy having a thickness of 0.8 mm and a fin material made of A3003Al alloy were assembled into a corrugated heat exchanger. Then, the flux-embedding brazing filler metal powder is suspended in water, the suspension is uniformly applied to the heat exchanger assembly, and then the brazing is performed by heating at 600 ° C. for 5 minutes in an N 2 atmosphere. It was

【0016】(実施例2)ろう材用金属粉末とフラック
ス粉末の体積比を99.9:0.1に設定した以外は実
施例1と同一条件でろう付を行った。
Example 2 Brazing was performed under the same conditions as in Example 1 except that the volume ratio of the brazing filler metal powder to the flux powder was set to 99.9: 0.1.

【0017】(実施例3)ろう材用金属粉末とフラック
ス粉末の体積比を50:50に設定した以外は実施例1
と同一条件でろう付を行った。
(Example 3) Example 1 except that the volume ratio of the brazing filler metal powder to the flux powder was set to 50:50.
Brazing was performed under the same conditions as.

【0018】(実施例4)実施例1のろう材用金属粉末
とフラックス粉末の体積比を95:5に設定して、高エ
ネルギーボールミルにより混合し、フラックス埋込みろ
う材粉末を製造した。
(Example 4) The metal powder for brazing filler metal of Example 1 and the flux powder were set to a volume ratio of 95: 5 and mixed by a high energy ball mill to produce a brazing filler metal powder for flux embedding.

【0019】一方、肉厚0.8mmのA1100Al合
金製押出チューブにA6063ユニオン材を組み付ける
とともに、その継手部に前記のフラックス埋込みろう材
粉末を水に懸濁した懸濁液を塗布したのち、N2 雰囲気
中で607℃×5分加熱してろう付品を得た。
On the other hand, the A6063 union material was assembled into an extruded tube made of an A1100Al alloy having a wall thickness of 0.8 mm, and the above-mentioned flux embedding brazing material powder was suspended in water and applied to the joint portion thereof. A brazed product was obtained by heating at 607 ° C. for 5 minutes in 2 atmospheres.

【0020】(実施例5)ろう材用金属粉末とフラック
ス粉末の体積比を99:1に設定した以外は実施例5と
同一条件でろう付を行った。
Example 5 Brazing was performed under the same conditions as in Example 5 except that the volume ratio of the brazing filler metal powder to the flux powder was set to 99: 1.

【0021】(実施例6)ろう材用金属粉末とフラック
ス粉末の体積比を70:30に設定した以外は実施例5
と同一条件でろう付を行った。
(Example 6) Example 5 except that the volume ratio of the brazing filler metal powder to the flux powder was set to 70:30.
Brazing was performed under the same conditions as.

【0022】(比較例1)A1100押出チューブと、
A3003材をコア材としA4343材をライナー材と
したブレージングシート製フィン材とを熱交換器に組立
てた。そして、この熱交換器組立物を、実施例1と同じ
フラックスを用いた5wt%フラックス懸濁液に浸漬し、
乾燥後N2 雰囲気中で600℃×5分加熱しろう付を行
った。
(Comparative Example 1) A1100 extruded tube,
A brazing sheet fin material having A3003 material as a core material and A4343 material as a liner material was assembled into a heat exchanger. Then, the heat exchanger assembly was immersed in a 5 wt% flux suspension using the same flux as in Example 1,
After drying, it was brazed by heating at 600 ° C. for 5 minutes in an N 2 atmosphere.

【0023】(比較例2)A1100Al合金製押出チ
ューブにA6063ユニオン材を組み付けるとともに、
その継手部にA4045Alろう材板を差し込んで、実
施例1と同じフラックスを用いた15wt%フラックス懸
濁液を塗布し、乾燥後N2 雰囲気中で600℃×3分加
熱しろう付を行った。
(Comparative Example 2) Assembling an A6063 union material into an extruded tube made of A1100Al alloy,
An A4045Al brazing material plate was inserted into the joint portion, a 15 wt% flux suspension using the same flux as in Example 1 was applied, and after drying, brazing was performed by heating at 600 ° C. for 3 minutes in an N 2 atmosphere. .

【0024】上記により得た8種類のろう付品につき、
下記の検査を行った。
With respect to the eight kinds of brazed products obtained above,
The following inspection was performed.

【0025】ろう付性の検査 フィン接合率あるいはろう充填率を調査し、フィン接合
率100%あるいはろう充填率100%のものを○、フ
ィン接合率90%以上100%未満あるいはろう充填率
90%以上100%未満のものを△、フィン接合率90
%未満あるいはろう充填率90%未満のものを×として
示した。
Inspection of brazing property The fin joining rate or the brazing filling rate is investigated, and the fin joining rate of 100% or the brazing filling rate of 100% is ◯, the fin joining rate is 90% or more and less than 100% or the brazing rate of 90%. More than less than 100% is △, fin bonding rate is 90
% Or a wax filling rate of less than 90% was shown as x.

【0026】ろう付後の外観状態の検査 ろう付品表面を目視観察し、フラックスの残留が目視で
確認できず外観が極めて清浄なものを○、フラックスの
残留が目視で認められるものを×とした。
Inspection of appearance state after brazing Visually observing the surface of the brazed product, ○ indicates that the appearance is extremely clean without visually confirming the residual flux, and x indicates that the residual flux is visually observed. did.

【0027】表面処理性の検査 各ろう付品表面にスプレー塗装を施すとともに、その表
面に100個の升目をけがいてテープ剥離試験を実施
し、全升目数に対して塗膜の残った升目数を数えるいわ
ゆる碁盤目試験を行った。
Inspection of surface treatability The surface of each brazed product was spray-painted, and 100 squares were marked on the surface for tape peeling test, and the number of squares where the coating film remained with respect to the total number of squares. A so-called cross-cut test was performed.

【0028】以上の検査結果を表1に示す。Table 1 shows the above inspection results.

【0029】[0029]

【表1】 表1の結果から、この発明によって製造したフラックス
埋込みAlろう材粉末によれば、フラックスを別途塗布
しなくても優れたろう付性を発揮でき、かつフラックス
の残留もなく外観状態に優れ表面処理性にも優れている
ことを確認し得た。
[Table 1] From the results of Table 1, according to the flux-embedded Al brazing filler metal powder produced according to the present invention, excellent brazing properties can be exhibited without additional application of flux, and there is no residual flux, which is excellent in appearance and surface treatability. It was confirmed that it was also excellent.

【0030】[0030]

【作用】ろう付時には、ろう材粉末に埋込まれたフッ化
物系フラックスにより接合部の表面酸化膜が除去され、
ろう材が濡れ拡がって、フッ化物系フラックスを別途塗
布した場合と同様に良好かつ強固なろう付接合が達成さ
れる。従って、フッ化物系フラックスを別途塗布する必
要はもはやなくなる。
[Function] During brazing, the surface oxide film on the joint is removed by the fluoride flux embedded in the brazing filler metal powder.
As the brazing material spreads wet, good and strong brazing joining is achieved as in the case where the fluoride flux is separately applied. Therefore, it is no longer necessary to separately apply the fluoride-based flux.

【0031】[0031]

【発明の効果】この発明は上述の次第で、Alろう材用
金属粉末にフッ化物系フラックス粒子が埋込み状態に分
散されたろう材を用い、該ろう材を、接合すべきアルミ
ニウムまたはその合金材の被接合部に供給し、加熱して
ろう付を行うことを特徴とするものであるから、ろう材
を接合部に供給するだけで良好なろう付を行うことがで
き、フッ化物系フラックスを別途供給する必要はなくな
る。このため、フラックスの塗布工程を不要となしえ、
接合作業効率を向上しえ、ひいてはアルミニウムろう付
品の生産性を向上し得る。
As described above, the present invention uses a brazing material in which fluoride-based flux particles are embedded in a metal powder for Al brazing material, and the brazing material is made of aluminum or its alloy material to be joined. Since it is characterized in that it is supplied to the jointed part and heated to perform brazing, good brazing can be performed only by supplying the brazing material to the jointed part, and a fluoride-based flux is added separately. No need to supply. For this reason, the flux application process is unnecessary,
It is possible to improve the joining work efficiency and, in turn, the productivity of the aluminum brazed product.

【0032】しかも、ろう材用金属粉末と混合されるフ
ラックス量はこれを一定範囲内に容易に規定できるか
ら、フラックス懸濁液を塗布する場合のようなフラック
ス塗布量にバラツキを生じる恐れはなく、少量の塗布で
あっても確実にフラックス作用を発揮させることができ
るとともに、フラックス塗布量が多すぎてろう付炉内が
汚染されるとか、フッ化物系フラックスの残留によるろ
う付品表面の色ムラの発生等の不都合を解消し得る。
Moreover, since the amount of flux mixed with the brazing filler metal powder can be easily regulated within a certain range, there is no risk of variations in the amount of flux applied as in the case of applying a flux suspension. Even if a small amount of coating is applied, the flux function can be reliably exhibited, and the brazing furnace is contaminated due to too much flux application, or the color of the brazing product surface due to residual fluoride flux. Inconveniences such as unevenness can be eliminated.

【図面の簡単な説明】[Brief description of drawings]

【図1】高エネルギーボールミルによる混合方法を説明
するための模式図である。
FIG. 1 is a schematic diagram for explaining a mixing method using a high energy ball mill.

【図2】アトライターによる混合方法を説明するための
模式図である。
FIG. 2 is a schematic diagram for explaining a mixing method using an attritor.

【図3】製造したフラックス埋込みろう材粉末の模式的
拡大図である。
FIG. 3 is a schematic enlarged view of the manufactured flux-embedding brazing filler metal powder.

【符号の説明】[Explanation of symbols]

2…ろう材用金属粉末 3…フッ化物系フラックス粉末 6…ろう材用金属粒子 7…フッ化物系フラックス粒子 2 ... braze metal powder 3 ... fluoride flux powder 6 ... braze metal particles 7 ... fluoride flux particles

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 Alろう材用金属粉末にフッ化物系フラ
ックス粒子が埋込み状態に分散されたろう材を用い、該
ろう材を、接合すべきアルミニウムまたはその合金材の
被接合部に供給し、加熱してろう付を行うことを特徴と
するアルミニウムまたはその合金材のろう付方法。
1. A brazing material in which fluoride-based flux particles are embedded in a metal powder for Al brazing material is used, and the brazing material is supplied to a portion to be joined of aluminum or its alloy material to be joined and heated. A brazing method of aluminum or its alloy material, which comprises brazing.
JP17068092A 1992-06-29 1992-06-29 Method for brazing aluminum or aluminum alloy Pending JPH0623536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17068092A JPH0623536A (en) 1992-06-29 1992-06-29 Method for brazing aluminum or aluminum alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17068092A JPH0623536A (en) 1992-06-29 1992-06-29 Method for brazing aluminum or aluminum alloy

Publications (1)

Publication Number Publication Date
JPH0623536A true JPH0623536A (en) 1994-02-01

Family

ID=15909406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17068092A Pending JPH0623536A (en) 1992-06-29 1992-06-29 Method for brazing aluminum or aluminum alloy

Country Status (1)

Country Link
JP (1) JPH0623536A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10286691A (en) * 1997-04-15 1998-10-27 Seiko Epson Corp Solder or brazer material and production
JP2004255466A (en) * 2004-03-29 2004-09-16 Seiko Epson Corp Production method of wax or solder material
JP2006136935A (en) * 2004-11-15 2006-06-01 Tamura Seisakusho Co Ltd Solder material feeding apparatus and solder material feeding method using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10286691A (en) * 1997-04-15 1998-10-27 Seiko Epson Corp Solder or brazer material and production
JP2004255466A (en) * 2004-03-29 2004-09-16 Seiko Epson Corp Production method of wax or solder material
JP2006136935A (en) * 2004-11-15 2006-06-01 Tamura Seisakusho Co Ltd Solder material feeding apparatus and solder material feeding method using the same
JP4688475B2 (en) * 2004-11-15 2011-05-25 株式会社タムラ製作所 Solder material supply apparatus and solder material supply method using the same

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