JPH03106595A - Composition for brazing of aluminum or aluminum alloy - Google Patents
Composition for brazing of aluminum or aluminum alloyInfo
- Publication number
- JPH03106595A JPH03106595A JP24067189A JP24067189A JPH03106595A JP H03106595 A JPH03106595 A JP H03106595A JP 24067189 A JP24067189 A JP 24067189A JP 24067189 A JP24067189 A JP 24067189A JP H03106595 A JPH03106595 A JP H03106595A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- aluminum alloy
- aluminum
- alloy powder
- resin binder
- 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
- 238000005219 brazing Methods 0.000 title claims abstract description 75
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000000203 mixture Substances 0.000 title claims description 14
- 239000000843 powder Substances 0.000 claims abstract description 39
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 230000004907 flux Effects 0.000 claims description 18
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 238000003763 carbonization Methods 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 16
- 239000000463 material Substances 0.000 description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 7
- 229920000058 polyacrylate Polymers 0.000 description 7
- 229910000676 Si alloy Inorganic materials 0.000 description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001485 poly(butyl acrylate) polymer Polymers 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000645 Hg alloy Inorganic materials 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229910006776 Si—Zn Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Inorganic materials [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
本発明は、アルミニウム又はアルミニウム合金のろう付
け用組成物に関するものである．The present invention relates to a composition for brazing aluminum or aluminum alloys.
アルミニウム又はアルミニウム合金〈以下、単にアルミ
ニウム合金）製の部材をろう付けずるに際し、このアル
ミニウム合金部材が単純な形状で，かつ、接合個所が少
ない場合には、ろう線材を用いたトーチろう付けで十分
に対応できると言われている．
しかしながら、アルミニウム合金製の熱交換器における
チューブとフィンとの接合の場合のように、接合個所が
多く複雑な形状の場合には、上記の方法では対処できに
くく、この様な場合にあってはろう材を予め張り合わせ
たプレージングシ一トを用い、そして真空ろう付け、不
活性雰囲気下でのろう付け、ブラックスを用いたろう付
け等のろう付け方法が提案されている．
ところで、上記プレージングシ一トを用いてのろう付け
方法は、複雑な形や接合個所が多い熱交換器のような場
合に非常に有効なるも、ろう付けに必要な部分以外にも
ろう材が張り合わされている為、無駄が多いとも言え、
それだけコストが高いものについていることは間違いな
い．さらに、ろう材が全面に張り合わされていることか
ら、ろう付け加熱時にろうが母材を侵食し、母材の変形
を引き起こす問題のあることも判ってきた．When brazing parts made of aluminum or aluminum alloy (hereinafter simply referred to as aluminum alloy), if the aluminum alloy part has a simple shape and there are few joints, torch brazing using a brazing wire is sufficient. It is said that it can correspond to However, in cases where there are many joints and complex shapes, such as the case of joining tubes and fins in an aluminum alloy heat exchanger, it is difficult to deal with the above method, and in such cases, Brazing methods such as vacuum brazing, brazing in an inert atmosphere, brazing using blacks, etc., have been proposed using a plating sheet in which brazing metal is pasted together in advance. By the way, the above-mentioned brazing method using a brazing sheet is very effective in cases such as heat exchangers that have complex shapes and many joints, but the brazing material is bonded to areas other than those required for brazing. It can be said that there is a lot of waste because
There is no doubt that it comes with something that costs more. Furthermore, since the solder metal is applied over the entire surface, it has been found that there is a problem in that the wax erodes the base metal during brazing heating, causing deformation of the base metal.
このような観点から、本発明者は、これに対する研究開
発を進めていった結果、プレージングシ一トを用いない
で複雑な形状の接合部にろう材を提供する手段としてろ
う材粉末を用いることが有効と考えた．そして、この場
合、ろう材粉末のみでは、ろう材を接合部に均一に供給
付着させることはできないけれども樹脂バインダとの混
合物にしておけば良いことに気が付いた．
しかしながら、この樹脂はどのようなものでも良いもの
ではないことが判ってきた．
すなわち、本発明の研究過程において得た特開昭５６−
１６０８６９号公報においては、フッ化物系フラックス
粉末と粒径が実質的に１〜２００μ量からなるＺｎ粉末
を重量比で４〜９対６〜１の割合で液体中に懸濁させ、
さらにカルボキシメチルセルロースをバインダとして０
．５重量％以下加え、このカルボキシメチルセルロース
を含む懸濁液をアルミニウム合金からなる接合材表面に
付着させ、次いで該接合材を乾燥させ、しかる哉該接合
材を不活性ガス中で該接合材の融点より低く、かつＺｎ
及び上記のフッ化物系フラックスの融点よりも高い温度
に加熱し、ろう材を溶融して接合するアルミニウム合金
のろう付方法が提案されており、この技術思想を例えば
＾ｌ−Ｓｉ等のアルミニウム合金粉末をろう材として用
いるろう付けの場合に応用した所、予想と異なり良好な
るろう付けが得られなかった．又、特公昭５８−３１２
７４号公報においては、金属粉末と側鎖にカルボキシル
基を有する水溶性高分子化合物と水とを必須戒分とする
ろう付け用金属ペースト組成物が提案されており、その
詳細な説明の部分において該水溶性高分子化合物として
は熱硬化型のアクリル系の樹脂（熱可塑性の樹脂であっ
てはならない）があり、金属粉末として銅やニッケル粉
末が用いられる旨開示されており、この技術思想を例え
ばＡＩ−Ｓｉ等のアルミニウム合金粉末をろう材として
用いるろう付けの場合に応用、すなわちこの技術思想に
おいて提案されている熟硬化型のアクリル系樹脂を樹脂
バインダに用いた所、予想と異なり良好なろう付けは得
られなかった．
すなわち、これまでにおいてろう材を粉末タイプとした
場合に樹脂をバインダとして用いることは既に提案され
ており、これまでに提案されていた各種の樹脂を用いて
例えば＾ｌ−Ｓｉ等のアルミニウム合金粉末をろう材と
して用いるろう付けの場合に応用してみたのであるが、
ろう材の金属成分が大幅に異なっていた為であるせいか
、これまでに提案されていた技術のものでは良好なろう
付け結果が得られなかった．
そこで、本発明者は、ろう付け温度が約５００〜８３０
℃であるＡＩ−Ｓｉ、＾ｌ−Ｚｎ等のアルミニウム合金
をろう材とした場合の樹脂バインダとして用いることが
できる樹脂がないものかと数えきれない程のテストを繰
り返した結果、アルミニウム合金粉末をろう材粉末とし
た場合の樹脂バインダとしてはろう付け温度で分解炭化
するより揮発性が高い熱可塑性のアクリル系樹脂であれ
ば良いことを見出すに至った．
例えば、アクリル酸、メタクリル酸、アクリル酸エステ
ル、メタクリル酸エステル等のホモボリマーあるいはコ
ポリマーといった分子量が１０００〜ｔｏｏｏｏｏｏの
熱可塑性のアクリル系樹脂を用いた場合に優れたろう付
け特性が得られたことを見出した．
尚、樹脂バインダが少なすぎると、ろう材粉末を均一に
供給できないことから、又、逆に樹脂バインダが多すぎ
ると、ろう付け特性が低下したことから、樹脂バインダ
とアルミニウム合金粉末の割合は所定の範囲内のもので
なければならなかった．
本発明はかかる知見を基にして達成されたものであり、
接合個所が多い場合でも、あるいは複雑な形状の部品の
場合でも簡単にろう付けを実施できるアルミニウム合金
用ろう付け組成物を提供することを目的とする．
この本発明の目的は、ろう付け用のアルミニウム合金粉
末と、ろう付け温度で分解炭化するより揮発性が高い熱
可塑性でアクリル系の樹脂バインダとを含み、この樹脂
バインダ／アルミニウム合金粉末の割合が０．１／９９
．０〜３５／６５（重量比》であることを特徴とするア
ルミニウム合金のろう付け用組成物によって達成される
．
尚、このアルミニウム合金のろう付け用組成物において
、ろう付け用のフラックスがさらに含まれてなることが
好ましく、この場合にフラツクス／アルミニウム合金粉
末の割合は０．１／９９．９〜６０／４０〈重量比〉で
ある．
又、アルミニウム合金粉末はその粒径が約１０〜２００
μ鋤であるものが好ましく、ス、樹脂バインダはその分
子量が１０００〜１００００００であるものが好ましい
．
そして、ろう付け用のアルミニウム合金粉末は、＾１−
Ｓｉ合金、＾ｌ−Ｓｉ−Ｈｇ合金、＾ｌ−Ｓｉ−Ｚｎ合
金、＾１−Ｚｎ合金等の接合しようとするアルミニウム
合金より融点の低いアルミニウム合金であれば良い．こ
の本発明になるアルミニウム合金のろう付け用組成物は
、ろう付け用のアルミニウム合金粉末及び熱可塑性のア
クリル系樹脂を、水あるいは有機溶剤（好ましくは水）
中で混合分散させればよく、この混合分散溶液をろう付
けしようとする個所に塗布やスプレー手段等で付着させ
、真空雰囲気下、不活性雰囲気下でのろう付け、フラッ
クスろう付け方法さらにはトーチろう付け方法等所定の
ろう付け手段でろう付けすればよい．
尚、フラックスを用いるろう付けの場合にあっては、塩
化物系やフッ化物系のフラックス或分を上記混合分散溶
液中に混合分散させておけば、その後のブラックス塗布
工程をなくすことができると共に、ろう付けに必要な量
だけフラックスを添加すれば良いから、フラックスを使
い過ぎることがなく、コスト的に有利である．
フラックスとしては、ＫＣＩ−ＬｉＣｌ系、ＺｎＣＩｚ
系等の塩化物系のものやＫＦ−＾ＩＦ３系等のフッ化物
系のものが使用でき、その添加量はろう付け雰囲気によ
って異なるものの、フラッグス／ろう付け用アルミニウ
ム合金粉末は０．１／９９．９〜６０／ ４０であれば
よい．From this point of view, the present inventor has carried out research and development on the subject and has discovered that it is possible to use brazing powder as a means of providing brazing material to complex-shaped joints without using a plating sheet. I thought it was effective. In this case, I realized that although it is not possible to uniformly supply and adhere the brazing filler metal to the joint using only the brazing filler metal powder, it is sufficient to use a mixture with the resin binder. However, it has become clear that this resin is not good in any way. That is, JP-A-56-1 obtained in the research process of the present invention.
In Japanese Patent No. 160869, a fluoride flux powder and a Zn powder having a particle size of substantially 1 to 200 μm are suspended in a liquid at a weight ratio of 4 to 9 to 6 to 1,
Additionally, carboxymethylcellulose is used as a binder.
．． The suspension containing carboxymethyl cellulose in an amount of 5% by weight or less is applied to the surface of a bonding material made of an aluminum alloy, and then the bonding material is dried, and then the bonding material is heated to the melting point of the bonding material in an inert gas. lower and Zn
A brazing method for aluminum alloys has been proposed in which the brazing material is heated to a temperature higher than the melting point of the above-mentioned fluoride flux to melt and join the aluminum alloys. When applied to brazing using powder as a brazing material, contrary to expectations, good brazing was not obtained. Also, special public service 58-312
Publication No. 74 proposes a metal paste composition for brazing which includes a metal powder, a water-soluble polymer compound having a carboxyl group in the side chain, and water as essential ingredients, and in its detailed explanation, The water-soluble polymer compound is a thermosetting acrylic resin (must not be a thermoplastic resin), and it is disclosed that copper or nickel powder is used as the metal powder. For example, when applied to brazing using aluminum alloy powder such as AI-Si as a brazing material, in other words, when the mature hardening type acrylic resin proposed in this technical idea was used as a resin binder, it turned out to be good, contrary to expectations. No brazing was obtained. In other words, it has already been proposed to use resin as a binder when the brazing filler metal is a powder type. I tried applying it to brazing using it as a brazing material.
Perhaps because the metal composition of the brazing filler metal was significantly different, good brazing results could not be obtained with the techniques proposed so far. Therefore, the present inventor has determined that the brazing temperature is approximately 500 to 830.
As a result of countless tests to find out if there is a resin that can be used as a resin binder when aluminum alloys such as AI-Si and ^l-Zn are used as brazing materials, we have found that aluminum alloy powder can be used as a brazing material. We have found that a thermoplastic acrylic resin that is more volatile than decomposes and carbonizes at the brazing temperature can be used as the resin binder when used as a material powder. For example, it has been found that excellent brazing properties can be obtained when a thermoplastic acrylic resin with a molecular weight of 1000 to tooooo, such as a homopolymer or copolymer of acrylic acid, methacrylic acid, acrylic ester, or methacrylic ester, is used. ．． Furthermore, if there is too little resin binder, the brazing powder cannot be supplied uniformly, and conversely, if there is too much resin binder, the brazing characteristics deteriorate. It had to be within the range. The present invention has been achieved based on such knowledge,
The purpose of this invention is to provide a brazing composition for aluminum alloys that can be easily brazed even when there are many joints or parts with complicated shapes. The object of the present invention is to include an aluminum alloy powder for brazing and a more volatile thermoplastic acrylic resin binder that decomposes and carbonizes at the brazing temperature, and the resin binder/aluminum alloy powder ratio is 0.1/99
．． This is achieved by an aluminum alloy brazing composition characterized by a weight ratio of 0 to 35/65. Furthermore, this aluminum alloy brazing composition further contains a brazing flux. In this case, the ratio of flux/aluminum alloy powder is 0.1/99.9 to 60/40 (weight ratio).Also, the aluminum alloy powder has a particle size of about 10 to 200.
Preferably, the resin binder has a molecular weight of 1,000 to 1,000,000. And the aluminum alloy powder for brazing is ^1-
Any aluminum alloy with a melting point lower than the aluminum alloy to be joined may be used, such as Si alloy, ^l-Si-Hg alloy, ^l-Si-Zn alloy, ^1-Zn alloy. The composition for brazing aluminum alloy according to the present invention is characterized in that aluminum alloy powder for brazing and thermoplastic acrylic resin are mixed in water or an organic solvent (preferably water).
This mixed and dispersed solution can be applied to the area to be brazed by coating or spraying, and brazing can be carried out in a vacuum atmosphere, in an inert atmosphere, by a flux brazing method, or by using a torch. Brazing may be performed using a specified brazing method such as brazing. In addition, in the case of brazing using flux, if a certain amount of chloride-based or fluoride-based flux is mixed and dispersed in the above mixed dispersion solution, the subsequent brazing process can be eliminated. At the same time, since it is only necessary to add the amount of flux required for brazing, there is no need to use too much flux, which is advantageous in terms of cost. As a flux, KCI-LiCl system, ZnCIz
It is possible to use chloride-based products such as fluoride-based products such as KF-^IF3-based products, and fluoride-based products such as KF-^IF3-based products.Although the amount added varies depending on the brazing atmosphere, Flags/brazing aluminum alloy powder is 0.1/99 It should be between .9 and 60/40.
【実施例１】
＾１０５０合金を押出により多穴管とし、これに平均粒
径約５０μ一の＾Ｉ− １０ｗｔ％Ｓｉ合金粉末と分子
皿が数万のポリアクリル酸ブチル（熱可塑性〉とを９５
：５の割合（重量比）で混合し、これに水を適量加えて
水溶液とし、この水溶液を塗布、乾燥し、表面にＡＩ−
１０ｗｔ％Ｓｉ合金粉末がポリアクリル酸プチルで結着
されたくろう合金粉末の塗膜が形或された〉押出多穴管
１とする．
この押出多穴管１に＾７０７２合金をコルゲート加工し
て得たフィン２を第１図のように組み合わせ、５％のフ
フ化物系フラックスを塗布する．そして、乾燥後、窒素
ガス雰囲気中で６００℃×５ｍｉｎの条件でろう付けを
行う．[Example 1] ^1050 alloy was made into a multi-hole tube by extrusion, and ^I-10wt% Si alloy powder with an average particle size of about 50μ1 and butyl polyacrylate (thermoplastic) having tens of thousands of molecular plates were added to it. 95
:5 ratio (weight ratio), add an appropriate amount of water to make an aqueous solution, apply this aqueous solution, dry it, and coat the surface with AI-
An extruded multi-hole tube 1 was formed with a coating film of wax alloy powder in which 10 wt% Si alloy powder was bound with butyl polyacrylate. Fins 2 obtained by corrugating ^7072 alloy are combined with this extruded multi-hole tube 1 as shown in Figure 1, and 5% fluoride flux is applied. After drying, brazing is performed at 600°C for 5 minutes in a nitrogen gas atmosphere.
【実施例２】
実施例１において、＾ｌ ｆｏｗｌ％Ｓｉ合金ろう粉
末とポリアクリル酸ブチルとの混合物中に、あらかじめ
フッ化物系フラックスをろう粉末／フラックスの重量比
が９９７１になるように混ぜておき、フッ化物系フラッ
クスを後で塗布することを省略する以外は同様に行った
．[Example 2] In Example 1, fluoride flux was mixed in advance into the mixture of ^lfowl%Si alloy solder powder and butyl polyacrylate so that the weight ratio of solder powder/flux was 9971. The same procedure was followed except that the fluoride flux was not applied afterwards.
【実施例３】
実施例２において、ろう粉末を＾ｌ１０ｗｔ％Ｓｉ−
２ｗｔ％Ｚｎ合金とした以外は同様に行った．[Example 3] In Example 2, the wax powder was ^l10wt%Si-
The same procedure was carried out except that a 2wt% Zn alloy was used.
【実施例
４】
実施例３において、フッ化物系フラックスの代わりに塩
化物系ブラックスを用い、かつ、ろう粉末／フラックス
の重量比は６０／４０になるようにし、その後大気炉中
で６００Ｘ５ｍｉｎの条件でろう付けを行う以外は同様
に行った．[Example 4] In Example 3, chloride-based blacks were used instead of fluoride-based flux, and the weight ratio of wax powder/flux was set to 60/40, and then heated at 600×5 min in an atmospheric furnace. The procedure was the same except that brazing was performed under the same conditions.
【実施例５】
実施例１において用いた分子量が数万のポリアクリル酸
ブチルの代わりに、分子量が数十万のアクリル酸エスデ
ルのコボリマー（？Ｊ！．可塑性）を用いて同様に行っ
た．[Example 5] Instead of the polybutyl acrylate having a molecular weight of several tens of thousands used in Example 1, the same procedure was carried out using a cobolimer of esdel acrylate (?J!.Plasticity) having a molecular weight of several hundred thousand.
【比較例１】
＾７０７２合金の両面に厚さが各々１０％になるように
Ｂ＾４０４５合金を張り合わせた０．１問のプレージン
グシートをコルゲート加工によりフィンとし、これと＾
１０５０合金押出押多穴管を組み合わせ、これにフッ化
物系の７ラックスを塗布し、その後窒素ガス雰囲気中で
６００℃Ｘ５ｍｉｎの条件でろう付けを行った．[Comparative Example 1] A 0.1 plating sheet made by laminating B^4045 alloy on both sides of ^7072 alloy so that the thickness is 10% on each side was corrugated into a fin, and this and ^
A 1050 alloy extruded multi-hole tube was assembled, coated with fluoride-based 7lux, and then brazed at 600°C for 5 minutes in a nitrogen gas atmosphere.
【比較例２】
実施例１において、ポリアクリル酸ブチル／ろう粉末を
４０／６０（重量比〉にする以外は同様に行った．[Comparative Example 2] The same procedure as in Example 1 was carried out except that the butyl polyacrylate/wax powder was changed to 40/60 (weight ratio).
【比較例３】
実施例１において、ポリアクリル酸ブチルの代わりにカ
ルボキシメチルセルロースを用いて同様に行った．[Comparative Example 3] The same procedure as in Example 1 was carried out using carboxymethylcellulose instead of butyl polyacrylate.
【比較例４】
比較例３において、カルボキシメチルセルロース／ろう
粉末を０．５／９９．５（重量比）にする以外は同様に
行った．Comparative Example 4 The same procedure as in Comparative Example 3 was carried out except that the carboxymethyl cellulose/wax powder was changed to 0.5/99.5 (weight ratio).
【比較例５】
実施例１において、ポリアクリル酸ブチルの代わりに熱
硬化型のポリアクリル酸ナトリウムを用いて同様に行っ
た．Comparative Example 5 The same procedure as in Example 1 was carried out using thermosetting sodium polyacrylate instead of butyl polyacrylate.
【比較例６】
比較例５に−おいて、熱硬化型のポリアクリル酸ナトリ
ウム／ろう粉末を１／９９（重量比）にする以外は同様
に行った，[Comparative Example 6] The same procedure as in Comparative Example 5 was carried out except that the thermosetting sodium polyacrylate/wax powder was changed to 1/99 (weight ratio).
【比較例７〜１２］
実施例１において、ポリアクリル酸ブチルの代わりに塩
化ビニル系樹脂（比較例７）、エボキシ系樹脂（比較例
８）、ポリエチレンオキサイド（比較例９）、ポリオレ
フィンのアルカリ塩（比較例１０）、ボリイソブチレン
（比較例１１）、澱粉（比較例１２）を各々用いて同様
に行った．
【比較例１３】
実施例ｌにおいて、＾ｌ− １０ｗｔ％Ｓｉ合金粉末と
分子塁が数万のポリアクリル酸ブチルとを含有させた水
溶液を用いる代わりに、フユージョ〉′社の１４８＾−
１０７ｃを用いて同様に行った．[Comparative Examples 7 to 12] In Example 1, vinyl chloride resin (Comparative Example 7), epoxy resin (Comparative Example 8), polyethylene oxide (Comparative Example 9), and alkali salt of polyolefin were used instead of butyl polyacrylate. (Comparative Example 10), polyisobutylene (Comparative Example 11), and starch (Comparative Example 12) were used in the same manner. [Comparative Example 13] In Example 1, instead of using an aqueous solution containing ^l- 10wt% Si alloy powder and polybutyl acrylate having a molecular base of tens of thousands, 148^- from Fujo>' was used.
The same procedure was performed using 107c.
上記各例におけるろう付け性、フィンの変形具合及びＣ
ＡＳＳ試験７２０時間を行い、押出多穴管の最大孔食深
さを調べたので、その結果を表１に示す．又、アルミニ
ウム合金板の上にアルミニウム合余ろう粉末及びバイン
ダ樹脂を含む溶液を塗布し、乾燥させた後このアルミニ
ウム合金板を成形加工し、この加工特性も調べたので、
その結果も併せて表１に示す．
表 １Brazing properties, fin deformation and C in each of the above examples
The ASS test was conducted for 720 hours to determine the maximum pitting depth of the extruded multi-hole pipe, and the results are shown in Table 1. In addition, a solution containing aluminum alloy brazing powder and binder resin was applied onto an aluminum alloy plate, and after drying, the aluminum alloy plate was formed and the processing characteristics were investigated.
The results are also shown in Table 1. Table 1
第ｌ図は、押出多穴管とフィンとの組立状態を示す説明
図である．FIG. 1 is an explanatory diagram showing the assembled state of the extruded multi-hole tube and the fin.
Claims (1)
温度で分解炭化するより揮発性が高い熱可塑性でアクリ
ル系の樹脂バインダとを含み、この樹脂バインダ／アル
ミニウム合金粉末の割合が０．１／９９．０〜３５／６
５（重量比）であることを特徴とするアルミニウム又は
アルミニウム合金のろう付け用組成物。 ［２］特許請求の範囲第１項記載のアルミニウム又はア
ルミニウム合金のろう付け用組成物において、ろう付け
用のフラックスがさらに含まれてなり、このフラックス
／アルミニウム合金粉末の割合が０．１／９９．９〜６
０／４０（重量比）であるもの。 ［３］特許請求の範囲第１項又は第２項記載のアルミニ
ウム又はアルミニウム合金用ろう付け組成物において、
アルミニウム合金粉末は、その粒径が約１０〜２００μ
ｍであるもの。 ［４］特許請求の範囲第１項又は第２項記載のアルミニ
ウム又はアルミニウム合金用ろう付け組成物において、
樹脂バインダは、その分子量が１０００〜１０００００
０であるもの。[Claims] [1] Contains an aluminum alloy powder for brazing and a thermoplastic acrylic resin binder that is more volatile than decomposition and carbonization at the brazing temperature, and the resin binder/aluminum alloy powder Ratio is 0.1/99.0 to 35/6
5 (weight ratio). A composition for brazing aluminum or aluminum alloy. [2] The composition for brazing aluminum or aluminum alloy according to claim 1, further comprising a brazing flux, and the ratio of the flux/aluminum alloy powder is 0.1/99. .9~6
0/40 (weight ratio). [3] In the brazing composition for aluminum or aluminum alloy according to claim 1 or 2,
The aluminum alloy powder has a particle size of approximately 10 to 200μ.
What is m. [4] In the brazing composition for aluminum or aluminum alloy according to claim 1 or 2,
The resin binder has a molecular weight of 1000 to 100000.
Something that is 0.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1240671A JP2681397B2 (en) | 1989-09-19 | 1989-09-19 | Aluminum or aluminum alloy brazing composition |
| US07/441,169 US4981526A (en) | 1988-11-29 | 1989-11-22 | Composition for brazing aluminum or aluminum alloy and an aluminum or aluminum alloy product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1240671A JP2681397B2 (en) | 1989-09-19 | 1989-09-19 | Aluminum or aluminum alloy brazing composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03106595A true JPH03106595A (en) | 1991-05-07 |
| JP2681397B2 JP2681397B2 (en) | 1997-11-26 |
Family
ID=17062974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1240671A Expired - Fee Related JP2681397B2 (en) | 1988-11-29 | 1989-09-19 | Aluminum or aluminum alloy brazing composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2681397B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11239869A (en) * | 1998-02-24 | 1999-09-07 | Sumitomo Light Metal Ind Ltd | Method for brazing aluminum |
| JPH11239867A (en) * | 1998-02-24 | 1999-09-07 | Denso Corp | Aluminum extruded porous flattened tube for heat exchanger of automobile excellent in property to be brazed and manufacture thereof |
| JP2000153393A (en) * | 1998-09-16 | 2000-06-06 | Denso Corp | Binder for aluminum brazing, flux or paint for applying flux and brazing filler metal, and aluminum brazing method |
| KR100449576B1 (en) * | 1995-09-22 | 2004-11-26 | 알칸 인터내셔널 리미티드 | Method of brazing aluminum and aluminum brazing material |
| KR100485361B1 (en) * | 2002-05-24 | 2005-04-27 | 주식회사 제이씨 | Water soluble acrylic polymer binder for flux and Brazing method using the same |
| US9631878B2 (en) | 2012-08-01 | 2017-04-25 | Uacj Corporation | Process for producing aluminum alloy tube having sacrificial anticorrosion layer and joining layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597763A (en) * | 1982-07-05 | 1984-01-14 | Suzuki Motor Co Ltd | Fuel heating & feeding unit in internal combustion engine |
-
1989
- 1989-09-19 JP JP1240671A patent/JP2681397B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597763A (en) * | 1982-07-05 | 1984-01-14 | Suzuki Motor Co Ltd | Fuel heating & feeding unit in internal combustion engine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100449576B1 (en) * | 1995-09-22 | 2004-11-26 | 알칸 인터내셔널 리미티드 | Method of brazing aluminum and aluminum brazing material |
| JPH11239869A (en) * | 1998-02-24 | 1999-09-07 | Sumitomo Light Metal Ind Ltd | Method for brazing aluminum |
| JPH11239867A (en) * | 1998-02-24 | 1999-09-07 | Denso Corp | Aluminum extruded porous flattened tube for heat exchanger of automobile excellent in property to be brazed and manufacture thereof |
| JP2000153393A (en) * | 1998-09-16 | 2000-06-06 | Denso Corp | Binder for aluminum brazing, flux or paint for applying flux and brazing filler metal, and aluminum brazing method |
| KR100485361B1 (en) * | 2002-05-24 | 2005-04-27 | 주식회사 제이씨 | Water soluble acrylic polymer binder for flux and Brazing method using the same |
| US9631878B2 (en) | 2012-08-01 | 2017-04-25 | Uacj Corporation | Process for producing aluminum alloy tube having sacrificial anticorrosion layer and joining layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2681397B2 (en) | 1997-11-26 |
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