JP2813479B2 - Aluminum brazing sheet - Google Patents

Aluminum brazing sheet

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Publication number
JP2813479B2
JP2813479B2 JP3013863A JP1386391A JP2813479B2 JP 2813479 B2 JP2813479 B2 JP 2813479B2 JP 3013863 A JP3013863 A JP 3013863A JP 1386391 A JP1386391 A JP 1386391A JP 2813479 B2 JP2813479 B2 JP 2813479B2
Authority
JP
Japan
Prior art keywords
alloy
brazing
sacrificial anode
core material
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.)
Expired - Fee Related
Application number
JP3013863A
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Japanese (ja)
Other versions
JPH04235245A (en
Inventor
和徳 石川
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.)
THE FURUKAW ELECTRIC CO., LTD.
Original Assignee
THE FURUKAW ELECTRIC CO., LTD.
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Application filed by THE FURUKAW ELECTRIC CO., LTD. filed Critical THE FURUKAW ELECTRIC CO., LTD.
Priority to JP3013863A priority Critical patent/JP2813479B2/en
Publication of JPH04235245A publication Critical patent/JPH04235245A/en
Application granted granted Critical
Publication of JP2813479B2 publication Critical patent/JP2813479B2/en
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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は自動車の熱交換器等に用
いられるアルミニウムブレージングシートに関するもの
であり、更に詳しくは熱交換器の冷媒通路を形成するパ
イプ等の材料として用いられるアルミニウムブレージン
グシートに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum brazing sheet used for a heat exchanger of an automobile, and more particularly to an aluminum brazing sheet used as a material for a pipe or the like forming a refrigerant passage of the heat exchanger. Things.

【0002】[0002]

【従来の技術】自動車用の熱交換器にはラジエーター、
カーエアコン、インタークーラー、オイルクーラー等種
々あるが、例えばラジエーターとしては図1に示すよう
な構造のものが用いられている。図1において1はチュ
ーブ、2はフィン、3はヘッダー、4はタンクである。
チューブ1、フィン2およびヘッダー3にはアルミ材料
が用いられており、タンク4は樹脂製のものが多く用い
られている。チューブ1とフィン2とヘッダー3は弗化
物系のフラックスを使用するろう付による接合によって
一体化され、これに樹脂製タンクが機械的接合(かしめ
加工)により取り付けられて、ラジエーターが製造され
る。チューブ材としてはAl−Mn系合金である300
3合金を芯材とし芯材のフィン側(大気側)の面にAl
−Si系合金である4343合金、4045合金などの
ろう材をクラッドし、他の面(冷媒側)にAl−Zn系
合金、Al−Zn−Mg系合金などの犠牲陽極材をクラ
ッドした3層構造のアルミニウムブレージングシートを
電縫加工およびロール成形加工により偏平管としたもの
を用いている。その板厚は0.3〜0.4mmである。
フィン材としては3003合金にZnを添加して犠牲陽
極作用を持たせた材料を使用しており、その肉厚は0.
08〜0.11mmである。またヘッダー材としてはチ
ューブ材と同様に3003合金の芯材の大気側にろう材
をクラッドし、冷媒側に犠牲陽極材をクラッドしたアル
ミニウムブレージングシートが使用されており、その肉
厚は1〜2mmである。
2. Description of the Related Art Radiators, heat exchangers for automobiles,
There are various types such as a car air conditioner, an intercooler, and an oil cooler. For example, a radiator having a structure as shown in FIG. 1 is used. In FIG. 1, 1 is a tube, 2 is a fin, 3 is a header, and 4 is a tank.
The tube 1, the fins 2 and the header 3 are made of an aluminum material, and the tank 4 is often made of a resin. The tube 1, the fins 2, and the header 3 are integrated by joining by brazing using a fluoride-based flux, and a resin tank is attached thereto by mechanical joining (caulking) to manufacture a radiator. The tube material is an Al-Mn alloy 300
Al alloy on the fin side (atmosphere side) of the core material
Three layers in which a brazing material such as a 4343 alloy or a 4045 alloy which is an Si-based alloy is clad, and a sacrificial anode material such as an Al-Zn-based alloy or an Al-Zn-Mg-based alloy is clad on the other surface (the refrigerant side). A flat tube made of aluminum brazing sheet having a structure by electric resistance welding and roll forming is used. Its plate thickness is 0.3 to 0.4 mm.
As the fin material, a material obtained by adding Zn to a 3003 alloy to have a sacrificial anode function is used, and the thickness thereof is set to 0.1 mm.
08 to 0.11 mm. As the header material, an aluminum brazing sheet is used in which a brazing material is clad on the atmosphere side of a 3003 alloy core material and a sacrificial anode material is clad on the refrigerant side in the same manner as the tube material, and the thickness thereof is 1 to 2 mm. It is.

【0003】そして近年では自動車の軽量化に対する要
求が強まり、それに対応するために自動車熱交換器の軽
量化も迫られている。そのため各部材の薄肉化が検討さ
れており、アルミニウムブレージングシートも薄肉化の
ために芯材にAl−Mn−Cu系合金、Al−Si−M
g系合金、Al−Si−Mg−Mn系合金など従来のA
l−Mn系合金に比較してより高強度で高耐食性の合金
を採用することが進められている。
[0003] In recent years, there has been an increasing demand for weight reduction of automobiles, and in order to cope with such demands, weight reduction of automobile heat exchangers is also required. Therefore, thinning of each member is being studied, and an aluminum-brazing sheet is also made of Al-Mn-Cu-based alloy, Al-Si-M
conventional A such as g-based alloy, Al-Si-Mg-Mn-based alloy
The use of alloys having higher strength and higher corrosion resistance than l-Mn alloys has been promoted.

【0004】[0004]

【発明が解決しようとする課題】しかるに弗化物系のフ
ラックスを使用するろう付においては、前記のようなM
gを含有する合金を芯材とするアルミニウムブレージン
グシートはろう付性が不安定である。例えばチューブ材
として用いるブレージングシートでは芯材に0.3wt
%以上のMgを添加すると、ろう付中にMgが芯材から
ろう材中に拡散して行きろう付時に塗布したフラックス
中のFとMgが反応し、チューブ材表面にMgF化合物
を形成し、チューブ材とフィンとのろう付性を著しく劣
化させる。またヘッダーとチューブの接合部においても
同様のろう付不良が起こる場合がある。チューブやフィ
ンなどの板厚が薄い場合には、Mgは前記のようにろう
付不良の原因となるばかりではなく、ろう付中に材料中
から材料表面に拡散して芯材中のMg量が著しく低下す
ることにより、ろう付後の強度の低下をひき起こす。ま
た芯材にCuを添加すると芯材の電位が貴となり、耐孔
食性が向上するが、600℃におけるろう付加熱中にブ
レージングシートの犠牲陽極材側に拡散し、犠牲陽極材
であるAl−Zn合金の電位を貴にして、犠牲陽極作用
を低下させる場合がある。
However, in the brazing using a fluoride-based flux, the M
The brazing property of an aluminum brazing sheet having an alloy containing g as a core material is unstable. For example, in a brazing sheet used as a tube material, 0.3 wt
% Or more of Mg is added, the Mg diffuses from the core material into the brazing material during brazing, F and Mg in the flux applied at the time of brazing react, and an MgF compound is formed on the tube material surface, The brazing property between the tube material and the fin is significantly deteriorated. Similar brazing failure may also occur at the joint between the header and the tube. When the thickness of the tube or fin is small, Mg not only causes the brazing failure as described above, but also diffuses from the material to the material surface during brazing to reduce the amount of Mg in the core material. Significant reduction causes a decrease in strength after brazing. When Cu is added to the core material, the potential of the core material becomes noble and the pitting corrosion resistance is improved. However, it diffuses toward the sacrificial anode material side of the brazing sheet during the heat of brazing at 600 ° C. In some cases, the potential of the alloy is increased to reduce the sacrificial anode effect.

【0005】[0005]

【課題を解決するための手段】本発明は、特に薄肉のラ
ジエーターチューブ材として用いるアルミニウムブレー
ジングシートにおいて、芯材からろう材中へのMgの拡
散によるろう付性の低下や、芯材から犠牲陽極材側への
Cuの拡散による犠牲陽極作用の低下を防止し、なおか
つ、ろう付後に高強度を有するアルミニウムブレージン
グシートを開発したものであり、請求項1記載の発明
は、芯材の片面にAl−Si系合金のろう材を、他の面
にAl−Zn系合金、またはAl−Zn−Mg系合金等
の犠牲陽極材をクラッドしたアルミニウムブレージング
シートにおいて、芯材を二層構造とし、該芯材のろう材
側をMn0.5〜1.5wt%、Cu0.2〜1.0w
t%、Mg0.05〜0.2wt%を含有し、残部Al
と不可避的不純物とからなるAl合金とし、犠牲陽極材
側をSi0.3〜1.0wt%、Mg0.2〜1.0w
t%、Cu0.3wt%未満を含有し、残部Alと不可
避的不純物とからなるAl合金としたことを特徴とする
アルミニウムブレージングシートであり、請求項2記載
の発明は、芯材の片面にAl−Si系合金のろう材を、
他の面にAl−Zn系合金、またはAl−Zn−Mg系
合金等の犠牲陽極材をクラッドしたアルミニウムブレー
ジングシートにおいて、芯材を二層構造とし、該芯材の
ろう材側をMn0.5〜1.5wt%、Cu0.2〜
1.0wt%、Mg0.05〜0.2wt%を含有し、
さらに各々0.05〜0.3wt%のCr、Zr、Ti
のうちの1種または2種以上を含有し、残部Alと不可
避的不純物とからなるAl合金とし、犠牲陽極材側をS
i0.3〜1.0wt%、Mg0.2〜1.0wt%、
Cu0.3wt%未満を含有し、残部Alと不可避的不
純物とからなるAl合金としたことを特徴とするアルミ
ニウムブレージングシートであり、請求項3記載の発明
は、芯材の片面にAl−Si系合金のろう材を、他の面
にAl−Zn系合金、またはAl−Zn−Mg系合金等
の犠牲陽極材をクラッドしたアルミニウムブレージング
シートにおいて、芯材を二層構造とし、該芯材のろう材
側をMn0.5〜1.5wt%、Cu0.2〜1.0w
t%、Mg0.05〜0.2wt%を含有し、残部Al
と不可避的不純物とからなるAl合金とし、犠牲陽極材
側をSi0.3〜1.0wt%、Mg0.2〜1.0w
t%、Cu0.3wt%未満を含有し、さらに各々0.
05〜0.3wt%のMn、Cr、Zr、Tiのうちの
1種または2種以上を含有し、残部Alと不可避的不純
物とからなるAl合金としたことを特徴とするアルミニ
ウムブレージングシートであり、請求項4記載の発明
は、芯材の片面にAl−Si系合金のろう材を、他の面
にAl−Zn系合金、またはAl−Zn−Mg系合金等
の犠牲陽極材をクラッドしたアルミニウムブレージング
シートにおいて、芯材を二層構造とし、該芯材のろう材
側をMn0.5〜1.5wt%、Cu0.2〜1.0w
t%、Mg0.05〜0.2wt%を含有し、さらに各
々0.05〜0.3wt%のCr、Zr、Tiのうちの
1種または2種以上を含有し、残部Alと不可避的不純
物とからなるAl合金とし、犠牲陽極材側をSi0.3
〜1.0wt%、Mg0.2〜1.0wt%、Cu0.
3wt%未満を含有し、さらに各々0.05〜0.3w
t%のMn、Cr、Zr、Tiのうちの1種または2種
以上を含有し、残部Alと不可避的不純物とからなるA
l合金としたことを特徴とするアルミニウムブレージン
グシートである。
SUMMARY OF THE INVENTION The present invention relates to an aluminum brazing sheet particularly used as a thin-walled radiator tube material, which reduces the brazing property due to the diffusion of Mg from the core material into the brazing material and reduces the sacrificial anode from the core material. An aluminum brazing sheet has been developed which prevents the sacrificial anode action from being reduced due to the diffusion of Cu to the material side and has high strength after brazing. In an aluminum brazing sheet in which a brazing material of a Si-based alloy is clad with a sacrificial anode material such as an Al-Zn-based alloy or an Al-Zn-Mg-based alloy on the other surface, the core material has a two-layer structure. 0.5 to 1.5 wt% Mn, 0.2 to 1.0 watts Cu
t%, Mg 0.05-0.2 wt% , the balance Al
And an unavoidable impurity, and the sacrificial anode material side is 0.3 to 1.0 wt% of Si and 0.2 to 1.0 wg of Mg.
An aluminum brazing sheet comprising an aluminum alloy containing less than 0.3% by weight of Cu and 0.3% by weight of Cu, and the balance being Al and unavoidable impurities. -Si-based alloy brazing material,
In an aluminum brazing sheet having another surface clad with a sacrificial anode material such as an Al-Zn-based alloy or an Al-Zn-Mg-based alloy, the core material has a two-layer structure, and the brazing material side of the core material is Mn0.5. ~ 1.5wt%, Cu0.2 ~
1.0 wt%, 0.05-0.2 wt% Mg
Furthermore, each of Cr, Zr, and Ti of 0.05 to 0.3 wt% is used.
Alloy containing at least one of the above, and the balance being Al and unavoidable impurities.
i 0.3-1.0 wt%, Mg 0.2-1.0 wt%,
An aluminum brazing sheet comprising an Al alloy containing less than 0.3 wt% of Cu and the balance of Al and inevitable impurities. The invention according to claim 3, wherein the core material has an Al-Si-based material on one surface. In an aluminum brazing sheet in which an alloy brazing material is clad with a sacrificial anode material such as an Al-Zn-based alloy or an Al-Zn-Mg-based alloy on the other surface, the core material has a two-layer structure. Material side: Mn 0.5-1.5wt%, Cu 0.2-1.0w
t%, 0.05-0.2 wt% of Mg, and the balance of Al
And an unavoidable impurity, and the sacrificial anode material side is 0.3 to 1.0 wt% of Si and 0.2 to 1.0 wg of Mg.
t%, less than 0.3 wt% Cu, and each containing 0.1% or less.
An aluminum brazing sheet comprising an Al alloy containing at least one of Mn, Cr, Zr, and Ti in an amount of 0.5 to 0.3 wt%, and an Al alloy including the balance of Al and inevitable impurities. According to the invention of claim 4, the core material is clad with a brazing material of an Al-Si alloy on one surface and a sacrificial anode material such as an Al-Zn alloy or an Al-Zn-Mg alloy on the other surface. In the aluminum brazing sheet, the core material has a two-layer structure, and the brazing material side of the core material is Mn 0.5 to 1.5 wt%, Cu 0.2 to 1.0 w
t, Mg 0.05 to 0.2 wt %, and further contains 0.05 to 0.3 wt% each of one or more of Cr, Zr, and Ti, and the balance with Al is inevitable. Al alloy composed of impurities, and the sacrificial anode material side is Si0.3
To 1.0 wt%, Mg 0.2 to 1.0 wt%, Cu0.
Less than 3 wt%, each with 0.05-0.3w
A containing one or more of t% of Mn, Cr, Zr, and Ti, and the balance of Al and unavoidable impurities
An aluminum brazing sheet characterized by being made of a 1 alloy.

【0006】[0006]

【作用】本発明においては芯材を二層構造とし、ろう材
側の芯材(以下A材という)にはMgの少ない材料を用
いて、ろう材中へのMgの拡散を少なくしてろう付性の
低下を防止し、犠牲陽極材側の芯材(以下B材という)
にはCuの少ない材料を用いて、犠牲陽極材中へのCu
の拡散を少なくし、犠牲陽極材の犠牲陽極作用の低下を
防止したものである。
In the present invention, the core material has a two-layer structure, and the material on the brazing material side (hereinafter referred to as "A material") is made of a material containing less Mg to reduce the diffusion of Mg into the brazing material. Core material on the sacrificial anode material side (hereinafter referred to as material B)
Using a material with low Cu, Cu
Of the sacrificial anode material of the sacrificial anode material is prevented from being reduced.

【0007】以下A材、B材における添加元素の添加理
由と添加量の限定理由について述べる。A材において、
Mnは強度と耐食性を向上させるために添加するもので
添加量を0.5〜1.5wt%(以下%と略記)とした
のは0.5%未満では効果がなく、1.5%を超えると
塑性加工性が低下するからである。Cuは強度と耐食性
を向上させるために添加するもので、添加量を0.2〜
1.0%としたのは0.2%未満では効果がなく1.0
%を超えると塑性加工性が低下するからである。Mgは
強度向上に効果があるが、0.05%未満ではその効果
が得られず、0.2%を超えて添加するとろう材側に拡
散してろう付性を低下させるので、その含有量は0.0
5〜0.2%とする。Cr、Zr、Tiはいずれも強度
向上に効果があるがそれぞれ0.05%未満では効果が
なく、0.3%を超えると巨大な化合物を形成して塑性
加工性を低下させる。Fe、Siは3003合金の不純
物程度の添加は良いが少ないほど耐食性は良好となる
B材において、SiはMgとMgSiなる化合物を形
成して、ろう付後の強度向上に効果がある。添加量を
0.3〜1.0%と限定したのは0.3%未満では効果
がなく、1.0%を超えると耐食性が低下するからであ
る。MgはSiとMgSiなる化合物を形成し、ろう
付後の強度向上に効果がある。添加量を0.2〜1.0
%と限定したのは0.2%未満では効果がなく、1.0
%を超えると耐食性が低下するからである。Cuは強度
向上と耐食性向上に効果がある。しかし犠牲陽極材側に
拡散して犠牲陽極材の犠牲陽極効果を低下させるので
0.3%未満に限定する必要がある。Mn、Cr、Z
r、Tiはいずれも強度向上に効果があるが、それぞれ
0.05%未満では効果がなく、0.3%を超えると塑
性加工性が低下する。Feは3003合金の不純物程度
の添加はよいが、少ないほど耐食性は良好となる。
The reasons for adding the additional elements in the materials A and B and the reasons for limiting the amounts added will be described below. In material A,
Mn is added to improve strength and corrosion resistance, and the addition amount is set to 0.5 to 1.5 wt% (hereinafter abbreviated as%). If the amount exceeds the above range, the plastic workability decreases. Cu is added to improve strength and corrosion resistance, and the addition amount is 0.2 to
The effect of 1.0% is less than 0.2%, and no effect is obtained.
%, The plastic workability decreases. Mg is effective in improving strength, but less than 0.05%
Can not be obtained, since diffuse into the brazing material side to lower the brazing property when added beyond 0.2%, the content thereof is 0.0
5 to 0.2% . Cr, Zr, and Ti are all effective in improving the strength, but each has less effect if less than 0.05%, and if more than 0.3%, forms a huge compound to lower the plastic workability. For Fe and Si, the addition of impurities of the 3003 alloy is good, but the less, the better the corrosion resistance .
In the material B, Si forms a compound of Mg and Mg 2 Si, which is effective in improving the strength after brazing. The reason why the addition amount is limited to 0.3 to 1.0% is that if it is less than 0.3%, there is no effect, and if it exceeds 1.0%, the corrosion resistance decreases. Mg forms a compound consisting of Si and Mg 2 Si, and is effective in improving the strength after brazing. 0.2-1.0
% Is less than 0.2%, there is no effect.
%, The corrosion resistance is reduced. Cu is effective in improving strength and corrosion resistance. However, since it diffuses to the sacrificial anode material side and lowers the sacrificial anode effect of the sacrificial anode material, it must be limited to less than 0.3%. Mn, Cr, Z
Both r and Ti are effective in improving the strength. However, if less than 0.05%, there is no effect, and if more than 0.3%, the plastic workability decreases. Fe is preferably added to the extent of impurities of the 3003 alloy, but the smaller the Fe, the better the corrosion resistance.

【0008】本発明アルミニウムブレージングシートに
おいて、ろう材、犠牲陽極材のクラッド率は各々3〜1
5%程度が適当であり、芯材のA材とB材のクラッド比
率は特に限定する必要はないが、ろう付性、外部耐食性
を重視する場合にはA材の比率を高くし、強度を重視す
る場合にはB材の比率を高くするのが良い。
In the aluminum brazing sheet of the present invention, the cladding ratio of the brazing material and the sacrificial anode material is 3 to 1 respectively.
About 5% is appropriate, and the clad ratio of the A material and the B material of the core material does not need to be particularly limited. However, when emphasis is placed on brazing properties and external corrosion resistance, the ratio of the A material is increased and the strength is increased. When importance is attached, it is preferable to increase the ratio of the B material.

【0009】[0009]

【実施例】表1,2に示すろう材側芯材14種、犠牲陽
極材側芯材13種および3003合金を金型鋳造により
鋳造して各々両面面削して20mm厚に仕上げた。ろう
材は4343合金を用い、犠牲陽極材はAl−1%Zn
−0.5%Mg合金を用い、いずれも芯材と同様に鋳造
し、面削後、熱間圧延により5mm厚とした。ろう材、
ろう材側芯材、犠牲陽極材側芯材、犠牲陽極材の4枚を
この順に重ね合わせ、500℃にて熱間圧延により4層
のクラッド材とした。その後冷間圧延により0.35m
m厚とし、330℃×2hrの中間焼鈍を入れて最終的に
は0.25mm厚にまで冷間圧延し、H14材の試料と
した。これらの試料について、強度、ろう付性、耐食性
を以下の方法で測定した。 強度 600℃×10minのろう付加熱後、10
0℃/minの冷却速度で冷却し、その後室温に4日間
放置した後引張強さを測定した。 ろう付性 0.1mm厚の3003合金のフィン材をコ
ルゲート加工したものと、本試料とを図2に示すように
組み合せてコアとし、これを3%の弗化物系フラックス
水溶液中に浸漬してフラックスを塗布し、200℃で乾
燥後、不活性ガス中で600℃×3minのろう付加熱
を行い、フィンの接合率を測定した。 耐食性 大気側:上記ろう付加熱コアを使用し、犠牲陽極材側及
び端面をシールし、キャス300Hrの腐食試験を行
い、試料に発生する最大孔食深さを測定した。 冷媒側:強度測定用の試料と同様のろう付加熱を施した
後ろう材側及び端面をシールしてCl- 195ppm、
Fe3+30ppm、SO4 2+ 60ppm、Cu2+1pp
mを含む88℃の高温水中で8Hr、室温放置16Hr
のサイクル浸漬テストを3ヶ月間行い試料に生じた最大
孔食深さを測定した。以上の測定結果を表3,4に示
す。
EXAMPLE 14 kinds of brazing material-side core materials, 13 kinds of sacrificial anode material-side core materials and 3003 alloy shown in Tables 1 and 2 were cast by die casting, and both surfaces were ground to a thickness of 20 mm. The brazing material is 4343 alloy, and the sacrificial anode material is Al-1% Zn.
Using a -0.5% Mg alloy, each was cast in the same manner as the core material, and after face milling, was hot-rolled to a thickness of 5 mm. Brazing material,
Four pieces of the brazing material-side core material, the sacrificial anode material-side core material, and the sacrificial anode material were laminated in this order, and hot-rolled at 500 ° C. to form a four-layer clad material. 0.35m after cold rolling
m, and subjected to intermediate annealing at 330 ° C. for 2 hours, and finally cold-rolled to a thickness of 0.25 mm to obtain a sample of H14 material. For these samples, the strength, brazing properties, and corrosion resistance were measured by the following methods. After 600 ° C x 10 min brazing heat, 10
After cooling at a cooling rate of 0 ° C./min, and then leaving it at room temperature for 4 days, the tensile strength was measured. As shown in FIG. 2, a core obtained by combining a corrugated 0.13 mm thick fin material of 3003 alloy and this sample as shown in FIG. 2 was immersed in a 3% fluoride aqueous flux solution. The flux was applied, dried at 200 ° C., and then heated in an inert gas at 600 ° C. for 3 minutes to measure the fin bonding rate. Corrosion resistance Atmosphere side: The sacrificial anode material side and the end face were sealed using the above-mentioned brazing additional heat core, and a corrosion test of a cast 300Hr was performed to measure the maximum pitting depth generated in the sample. Refrigerant side: After applying the same brazing heat as the sample for strength measurement, the brazing material side and the end face are sealed, and Cl - 195 ppm,
Fe 3+ 30ppm, SO 4 2+ 60ppm , Cu 2+ 1pp
8Hr in 88 ° C high-temperature water containing m, 16Hr left at room temperature
Was carried out for 3 months to measure the maximum pit depth of the sample. Tables 3 and 4 show the above measurement results.

【0010】[0010]

【表1】 [Table 1]

【0011】[0011]

【表2】 [Table 2]

【0012】[0012]

【表3】 [Table 3]

【0013】[0013]

【表4】 [Table 4]

【0014】表3,4から明らかなように、本発明例N
o.1〜20はろう付後の強度が15kgf/mm2
上と3003合金を芯材とした従来例No.29よりも高
く、接合率は90%以上と優れ、耐食性も良好である。
これに対し比較例No.21、22、24、25は強度が
低く、比較例No.23はろう付性が劣り、比較例No.2
6は冷媒側の耐食性が若干劣り、いずれも問題がある。
また芯材を単層とした比較例No.27、28は前者は強
度が低く、後者はろう付性が悪く、大気側の耐食性も悪
い。さらに芯材が3003合金単層である従来例No.2
9は強度が低い。
As is apparent from Tables 3 and 4, the present invention N
o. Nos. 1 to 20 have a strength after brazing of 15 kgf / mm 2 or more and have a core of 3003 alloy. It is higher than 29, the bonding ratio is as excellent as 90% or more, and the corrosion resistance is good.
In contrast, Comparative Example No. Nos. 21, 22, 24, and 25 have low strengths. Comparative Example No. 23 had poor brazing properties. 2
Sample No. 6 is slightly inferior in corrosion resistance on the refrigerant side, and all have problems.
In Comparative Example No. 1 in which the core was a single layer. Nos. 27 and 28 have low strength in the former, poor brazing properties and poor corrosion resistance on the air side. Further, in the conventional example in which the core material is a 3003 alloy single layer, 2
9 has low strength.

【0015】[0015]

【発明の効果】以上述べた如く本発明によればろう付後
の強度が高く、大気側、冷媒側両面の耐食性が良好で、
かつろう付性も良いアルミニウムブレージングシートが
得られるもので熱交換器部材の薄肉化が可能となり、自
動車の軽量化に対して顕著な効果を奏するものである。
As described above, according to the present invention, the strength after brazing is high, and the corrosion resistance on both the air side and the refrigerant side is good.
Further, an aluminum brazing sheet having good brazing properties can be obtained, and the thickness of the heat exchanger member can be reduced, which has a remarkable effect on reducing the weight of an automobile.

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

【図1】自動車用ラジエーターの構造を示す説明図。FIG. 1 is an explanatory view showing the structure of a radiator for an automobile.

【図2】アルミニウムブレージングシートのろう付性を
判定するためのろう付加熱コアを示す図。
FIG. 2 is a view showing a brazing-added heat core for determining the brazing property of an aluminum brazing sheet.

【符号の説明】[Explanation of symbols]

1 チューブ 2 フィン 3 ヘッダー 4 タンク 5 チューブ材 1 Tube 2 Fin 3 Header 4 Tank 5 Tube material

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 芯材の片面にAl−Si系合金のろう材
を、他の面にAl−Zn系合金、またはAl−Zn−M
g系合金等の犠牲陽極材をクラッドしたアルミニウムブ
レージングシートにおいて、芯材を二層構造とし、該芯
材のろう材側をMn0.5〜1.5wt%、Cu0.2
〜1.0wt%、Mg0.05〜0.2wt%を含有
し、残部Alと不可避的不純物とからなるAl合金と
し、犠牲陽極材側をSi0.3〜1.0wt%、Mg
0.2〜1.0wt%、Cu0.3wt%未満を含有
し、残部Alと不可避的不純物とからなるAl合金とし
たことを特徴とするアルミニウムブレージングシート。
1. A brazing material of an Al—Si alloy on one surface of a core material and an Al—Zn alloy or Al—Zn—M on another surface.
In an aluminum brazing sheet clad with a sacrificial anode material such as a g-based alloy, the core material has a two-layer structure, and the brazing material side of the core material has Mn of 0.5 to 1.5 wt%, Cu 0.2
To 1.0 wt% and 0.05 to 0.2 wt% of Mg, and an Al alloy containing the balance of Al and unavoidable impurities.
An aluminum brazing sheet comprising 0.2 to 1.0 wt%, less than 0.3 wt% Cu, and an Al alloy comprising the balance of Al and inevitable impurities.
【請求項2】 芯材の片面にAl−Si系合金のろう材
を、他の面にAl−Zn系合金、またはAl−Zn−M
g系合金等の犠牲陽極材をクラッドしたアルミニウムブ
レージングシートにおいて、芯材を二層構造とし、該芯
材のろう材側をMn0.5〜1.5wt%、Cu0.2
〜1.0wt%、Mg0.05〜0.2wt%を含有
し、さらに各々0.05〜0.3wt%のCr、Zr、
Tiのうちの1種または2種以上を含有し、残部Alと
不可避的不純物とからなるAl合金とし、犠牲陽極材側
をSi0.3〜1.0wt%、Mg0.2〜1.0wt
%、Cu0.3wt%未満を含有し、残部Alと不可避
的不純物とからなるAl合金としたことを特徴とするア
ルミニウムブレージングシート。
2. An Al—Si alloy brazing material on one side of the core material and an Al—Zn alloy or Al—Zn—M on the other side.
In an aluminum brazing sheet clad with a sacrificial anode material such as a g-based alloy, the core material has a two-layer structure, and the brazing material side of the core material has Mn of 0.5 to 1.5 wt%, Cu 0.2
-1.0 wt%, Mg 0.05-0.2 wt% , and each of Cr, Zr, 0.05-0.3 wt%.
An Al alloy containing one or more of Ti, the balance being Al and unavoidable impurities, and the sacrificial anode material side having 0.3 to 1.0 wt% of Si and 0.2 to 1.0 wt% of Mg
%, Less than 0.3 wt% of Cu, and an aluminum alloy comprising the balance of Al and inevitable impurities.
【請求項3】 芯材の片面にAl−Si系合金のろう材
を、他の面にAl−Zn系合金、またはAl−Zn−M
g系合金等の犠牲陽極材をクラッドしたアルミニウムブ
レージングシートにおいて、芯材を二層構造とし、該芯
材のろう材側をMn0.5〜1.5wt%、Cu0.2
〜1.0wt%、Mg0.05〜0.2wt%を含有
し、残部Alと不可避的不純物とからなるAl合金と
し、犠牲陽極材側をSi0.3〜1.0wt%、Mg
0.2〜1.0wt%、Cu0.3wt%未満を含有
し、さらに各々0.05〜0.3wt%のMn、Cr、
Zr、Tiのうちの1種または2種以上を含有し、残部
Alと不可避的不純物とからなるAl合金としたことを
特徴とするアルミニウムブレージングシート。
3. An Al—Si alloy brazing material on one side of the core material and an Al—Zn alloy or Al—Zn—M on the other side.
In an aluminum brazing sheet clad with a sacrificial anode material such as a g-based alloy, the core material has a two-layer structure, and the brazing material side of the core material has Mn of 0.5 to 1.5 wt%, Cu 0.2
To 1.0 wt% and 0.05 to 0.2 wt% of Mg, and an Al alloy containing the balance of Al and unavoidable impurities.
0.2-1.0 wt%, containing less than 0.3 wt% Cu, and further each containing 0.05-0.3 wt% of Mn, Cr,
An aluminum brazing sheet comprising one or more of Zr and Ti, and an Al alloy comprising the balance of Al and inevitable impurities.
【請求項4】 芯材の片面にAl−Si系合金のろう材
を、他の面にAl−Zn系合金、またはAl−Zn−M
g系合金等の犠牲陽極材をクラッドしたアルミニウムブ
レージングシートにおいて、芯材を二層構造とし、該芯
材のろう材側をMn0.5〜1.5wt%、Cu0.2
〜1.0wt%、Mg0.05〜0.2wt%を含有
し、さらに各々0.05〜0.3wt%のCr、Zr、
Tiのうちの1種または2種以上を含有し、残部Alと
不可避的不純物とからなるAl合金とし、犠牲陽極材側
をSi0.3〜1.0wt%、Mg0.2〜1.0wt
%、Cu0.3wt%未満を含有し、さらに各々0.0
5〜0.3wt%のMn、Cr、Zr、Tiのうちの1
種または2種以上を含有し、残部Alと不可避的不純物
とからなるAl合金としたことを特徴とするアルミニウ
ムブレージングシート。
4. A brazing material of an Al—Si alloy on one surface of a core material and an Al—Zn alloy or Al—Zn—M on another surface.
In an aluminum brazing sheet clad with a sacrificial anode material such as a g-based alloy, the core material has a two-layer structure, and the brazing material side of the core material has Mn of 0.5 to 1.5 wt%, Cu 0.2
-1.0 wt%, Mg 0.05-0.2 wt% , and each of Cr, Zr, 0.05-0.3 wt%.
An Al alloy containing one or more of Ti, the balance being Al and unavoidable impurities, and the sacrificial anode material side having 0.3 to 1.0 wt% of Si and 0.2 to 1.0 wt% of Mg
%, Less than 0.3 wt% of Cu,
5 to 0.3 wt% of Mn, Cr, Zr, Ti
An aluminum brazing sheet comprising: an Al alloy containing at least two or more species, the balance being Al and unavoidable impurities.
JP3013863A 1991-01-11 1991-01-11 Aluminum brazing sheet Expired - Fee Related JP2813479B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3013863A JP2813479B2 (en) 1991-01-11 1991-01-11 Aluminum brazing sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3013863A JP2813479B2 (en) 1991-01-11 1991-01-11 Aluminum brazing sheet

Publications (2)

Publication Number Publication Date
JPH04235245A JPH04235245A (en) 1992-08-24
JP2813479B2 true JP2813479B2 (en) 1998-10-22

Family

ID=11845095

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP2813479B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1351794B2 (en) 2000-12-21 2010-02-24 Alcoa Inc. Multi-layer, heat treatable brazing sheet with aluminium interlayer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150052A (en) * 1983-02-14 1984-08-28 Kobe Steel Ltd Al composite material for brazed heat exchanger
JP2541995B2 (en) * 1987-08-07 1996-10-09 三菱アルミニウム株式会社 High strength Al alloy composite brazing sheet for Al heat exchanger structural member
JP2577962B2 (en) * 1988-06-29 1997-02-05 日本電装株式会社 Aluminum heat exchanger
JP2564190B2 (en) * 1988-09-12 1996-12-18 株式会社神戸製鋼所 Aluminum alloy composite for brazing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1351794B2 (en) 2000-12-21 2010-02-24 Alcoa Inc. Multi-layer, heat treatable brazing sheet with aluminium interlayer

Also Published As

Publication number Publication date
JPH04235245A (en) 1992-08-24

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