JPH03285761A - Brazing method for iron material and aluminum material - Google Patents
Brazing method for iron material and aluminum materialInfo
- Publication number
- JPH03285761A JPH03285761A JP8710490A JP8710490A JPH03285761A JP H03285761 A JPH03285761 A JP H03285761A JP 8710490 A JP8710490 A JP 8710490A JP 8710490 A JP8710490 A JP 8710490A JP H03285761 A JPH03285761 A JP H03285761A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- iron
- aluminum
- alloy layer
- brazing material
- 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 74
- 239000000463 material Substances 0.000 title claims abstract description 53
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 10
- 229910045601 alloy Inorganic materials 0.000 abstract description 15
- 239000000956 alloy Substances 0.000 abstract description 15
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000005304 joining Methods 0.000 abstract description 4
- 229910015392 FeAl3 Inorganic materials 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 11
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 229910052718 tin Inorganic materials 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910052797 bismuth Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、例えば風呂釜、給湯器、暖房器等の熱交換
器や、一般産業用継手等において、鉄材とアルミニウム
材との接合に用いられる、鉄材とアルミニウム材とのろ
う付方法に関する。[Detailed Description of the Invention] Industrial Application Field The present invention is used for joining iron and aluminum materials, for example, in heat exchangers for bathtubs, water heaters, space heaters, etc., and general industrial joints. Concerning a method of brazing iron and aluminum materials.
なお、この明細書において、鉄の語は純鉄のみならずス
テンレス鋼、普通鋼その地鉄系合金を含む意味で用いる
。また、アルミニウムの語はその合金を含む意味で用い
る。In this specification, the term iron is used to include not only pure iron but also stainless steel, common steel, and base metal alloys. Furthermore, the term aluminum is used to include its alloys.
従来の技術
鉄材例えばステンレス鋼とアルミニウム材とのろう付は
、通常のアルミニウム材相互のろう付に用いられるＡｌ
２−８ｔ系ろう材を用いて一応これを行いうろことは知
られている。BACKGROUND OF THE INVENTION Brazing between iron materials, such as stainless steel and aluminum materials, is performed using Al, which is normally used for brazing aluminum materials together.
It is known to perform this process using a 2-8t brazing filler metal.
発明が解決しようとする課題
ところが、このような従来のＡρ−８ｌ系ろう材を用い
た場合、ろう材の融点が概して高いことから、ろう付温
度が６００℃以上の高温にならざるを得ない。しかるに
、ろう付温度が高いと鉄材とアルミニウム材との接合界
面に厚さ２０〜４０μｍ程度のＦｅＡρ３系の脆い合金
層が形成され、これが原因で接合面の十分な強度が得ら
れないという欠点があった。従って、かかるろう付方法
を適用できる製品は自ずと限定されるものであった。殊
に風呂釜、給湯器、冷熱繰返し継手等のように加熱冷却
が繰返して行われるものでは、特に優れた接合強度が要
求されるため、鉄材とアルミニウム材との接合にろう付
を適用することは問題が大きく、他の煩雑な接合方法に
よらざるを得ないのが実情である。Problems to be Solved by the Invention However, when such conventional Aρ-8L brazing filler metals are used, since the melting point of the brazing filler metals is generally high, the brazing temperature has to be as high as 600°C or higher. . However, if the brazing temperature is high, a brittle FeAρ3 alloy layer with a thickness of about 20 to 40 μm is formed at the bonding interface between the iron material and the aluminum material, and this causes the disadvantage that sufficient strength of the bonded surface cannot be obtained. there were. Therefore, the products to which this brazing method can be applied are naturally limited. In particular, products that undergo repeated heating and cooling, such as bathtubs, water heaters, and joints that undergo repeated heating and cooling, require particularly excellent joint strength, so brazing is used to join steel and aluminum materials. However, this is a serious problem, and the reality is that other complicated joining methods have to be used.
この発明は、このような技術的背景に鑑みてなされたも
のであって、鉄材とアルミニウム材とのろう付に際し、
接合界面の脆い合金層の形成を抑制しえて十分な接合強
度を実現できるろう付方法の提供を目的とする。This invention was made in view of such a technical background, and when brazing iron and aluminum materials,
The object of the present invention is to provide a brazing method that can suppress the formation of a brittle alloy layer at the joint interface and achieve sufficient joint strength.
課題を解決するための手段
上記目的は、鉄材とアルミニウム材とをろう付するに際
し、ろう材としてＡβ−Ｓｉ−高Ｚｎ系のろう材を使用
するとともに、５７０°Ｃ以下の温度でろう付すること
を特徴とする鉄材とアルミニウム材とのろう付方法によ
って達成される。Means for Solving the Problems The above object is to use an Aβ-Si-high Zn brazing material as a brazing material when brazing iron and aluminum materials, and to braze at a temperature of 570°C or less. This is achieved by a method of brazing iron and aluminum materials.
この発明に用いる鉄材はその組成が具体的に限定される
ことはなく、用途に応じて炭素鋼、オーステナイト系あ
るいはフェライト系ステンレス鋼等を適宜用いれば良い
。またアルミニウム材の組成も限定されるものではなく
、純アルミニウムの外、ＡΩ−Ｍｎ系その他の各種合金
を用いうる。The composition of the iron material used in this invention is not specifically limited, and carbon steel, austenitic stainless steel, ferritic stainless steel, etc. may be used as appropriate depending on the purpose. Furthermore, the composition of the aluminum material is not limited, and in addition to pure aluminum, various alloys such as AΩ-Mn series and others may be used.
この発明に用いるろう材は、Ｓｌを０．５〜１２ｖｔ％
程度、Ｚｎを１５〜８０ｖｔ％程度含有するＡΩ−Ｓｉ
−高Ｚｎ系ろう材である。このように、高Ｚｎ含有ろう
材を用いることによりろう材の低融点化が可能となり、
ひいては接合界面にＦｅＡΩ３系の脆い合金層を形成し
ない低温度でのろう付が可能となる。ろう制の具体的組
成の一例を挙げると次のとおりである。The brazing material used in this invention contains 0.5 to 12 vt% of Sl.
AΩ-Si containing about 15 to 80 vt% of Zn
-It is a high Zn brazing filler metal. In this way, by using a high Zn-containing brazing filler metal, it is possible to lower the melting point of the brazing filler metal,
As a result, it is possible to perform brazing at a low temperature without forming a FeAΩ3 brittle alloy layer at the bonding interface. An example of a specific composition of a wax system is as follows.
即ち、基本的には、Ｓ ｉ ： ０． ５〜］、 ２ｖ
ｔ％、Ｚｎ：１５〜８０ｗｔ％を含有し、残部アルミニ
ウム及び不可避不純物からなるろう祠を用いれば良い。That is, basically, S i :0. 5~], 2v
t%, Zn: 15 to 80 wt%, and the balance is aluminum and unavoidable impurities.
上記において、Ｓｉはろう材の融点を低下させるととも
に流動性を高めるのに必要なものである。しかしその含
有量が０．５ｗｔ％未満ではそれらの効果に乏しくなる
虞れがある。In the above, Si is necessary for lowering the melting point of the brazing material and increasing its fluidity. However, if the content is less than 0.5 wt%, there is a risk that these effects will be poor.
一方、１２ｗｔ％を超えて含有されると却って融点の急
激な増大を招き、ろう材として使用できなくなる虞れが
ある。Ｓｉの特に好ましい含有量は４ｖｔ％以上殊に５
〜８ｗｔ％である。前記Ｚｎはろう材の低融点化に極め
て有効な元素てある。しかし、その含有量が１５ｗｔ％
未満ではその効果に乏しくなる虞れがあり、一方８０ｗ
ｔ％を超えると加工性の悪化を来す虞れがある。特に好
ましいＺｎの含有量は５５ｖｔ％以下殊に２０〜５０ｖ
ｔ％程度である。On the other hand, if the content exceeds 12 wt%, the melting point will rather increase rapidly, and there is a possibility that it may become unusable as a brazing filler metal. A particularly preferable content of Si is 4vt% or more, especially 5vt% or more.
~8wt%. The Zn is an extremely effective element for lowering the melting point of the brazing filler metal. However, the content is 15wt%
If it is less than 80w, there is a risk that the effect will be poor.
If it exceeds t%, there is a risk of deterioration in workability. Particularly preferable Zn content is 55vt% or less, especially 20 to 50vt%.
It is about t%.
また、他の高Ｚｎ含有ろう材として、上記Ｓｉ、Ｚｎに
加えてＢｅを０．０２〜１．０ｗ１％の範囲で含有した
ものを用いても良い。ＢｅはＳｉ、Ｚｎの低融点効果を
損うことなくろう材の強度、伸び等の機械的性質の向上
に寄与するものであり、ひいてはろう付後におけるろう
付接合部（フィレッｌ−）の機械的性質を向上させる作
用効果がある。しかし、０．０２ｗｔ％未満では上記効
果を発揮できない虞れかあり、一方１．０ｗ１％を超え
ても効果が飽和することから経済的な無駄を招く虞れが
ある。Ｂｅを含有する場合の特に好ましい範囲は０，１
０〜０．５ｗｔ％である。Moreover, as another high Zn-containing brazing material, one containing Be in a range of 0.02 to 1.0w1% in addition to the above-mentioned Si and Zn may be used. Be contributes to improving the mechanical properties such as strength and elongation of the brazing filler metal without impairing the low melting point effect of Si and Zn, and ultimately improves the mechanical properties of the brazed joint (fillet l-) after brazing. It has the effect of improving physical properties. However, if it is less than 0.02wt%, there is a risk that the above effects cannot be exhibited, while if it exceeds 1.0w1%, the effect will be saturated, which may lead to economic waste. A particularly preferable range when containing Be is 0,1
It is 0 to 0.5 wt%.
さらに、他の高Ｚｎ含有ろう祠として、上記Ｓｉ、Ｚｎ
に加えて、Ｃｕ ： ０． ２〜２． Ｏｗｔ％を含
有したものを用いても良い。ＣｕはＺｎの高濃度含有に
よりろう付後においてフィレットの自然電極電位が卑と
なるのを防止し、電位を貴側にシフトさせることにより
接合部の腐食を防止する役割を果す。しかし、その含有
量が０、 ２ｗｔ％未満では上記効果に乏しくなる虞れ
があり、２． ０ｗ１％を超えると加工性の劣化を派生
する危険がある。Ｃｕを含有する場合の好ましい範囲は
０，５〜１．５ｖｔ％である。なお、Ｃｕを含有する場
合、接合部の機械的性質の改善のためにｌｖｔ％程度以
下の範囲でＢｅを含有せしめても良い。Furthermore, as other high Zn-containing waxes, the above-mentioned Si, Zn
In addition, Cu: 0. 2-2. You may use the thing containing Owt%. Cu plays the role of preventing the natural electrode potential of the fillet from becoming base after brazing due to the high concentration of Zn, and preventing corrosion of the joint by shifting the potential to the noble side. However, if the content is less than 0.2 wt%, there is a risk that the above effects will be poor. If it exceeds 0w1%, there is a risk of deterioration in workability. When containing Cu, the preferable range is 0.5 to 1.5 vt%. Note that when Cu is contained, Be may be contained in a range of about lvt% or less in order to improve the mechanical properties of the joint.
さらに他の高Ｚｎ含有ろう材として、上記Ｓｉ、Ｚｎと
ともにＩ ｎ ： ０． ０２−０． ２ｗｔ％、Ｓｎ
： ０． ０５〜０．４ｗｔ％、Ｂｉ：０．０５〜０
．４ｗｔ％の１種または２種以上を含有するものを挙げ
うる。上記において、Ｉｎ、Ｓｎ。Furthermore, as another high Zn-containing brazing filler metal, in addition to the above Si and Zn, I n : 0. 02-0. 2wt%, Sn
: 0. 05-0.4wt%, Bi: 0.05-0
．． Examples include those containing 4 wt% of one or more of them. In the above, In, Sn.
Ｂｉはろう何時に溶融したろう材が濡れ拡がるとき、表
面の酸化膜を弱く欠陥あるものにして良好なろう付を達
成するのに有効な元素である。Bi is an effective element for achieving good brazing by making the oxide film on the surface weak and defective when the molten brazing material spreads during brazing.
かかる効果の点でこれらはいずれも均等物として評価さ
れるものであり、少なくとも１種が含有されれば足りる
。しかし、Ｉｎか０．０２ｗｔ％未満、Ｓｎが０．０５
ｖｔ％未満、Ｂｉが０゜０５ｗｔ％未満では上記効果を
発揮できない虞れがある。一方、Ｉｎが０．２ｗｔ％を
超え、Ｓｎが０．４ｗｔ％を超え、Ｂｉが０．４ｖｔ％
を超えても効果が飽和することから経済的な無駄を招く
危険がある。Ｉｎ、Ｓｎ、Ｂｉの１種または２種以上を
含有する場合の特に好ましい含有範囲はＩ ｎ ： ０
． ０３−０． ］ ５ｖｔ％、Ｓｎ：０゜１．０〜
０． ３０ｗｔ％、Ｂ ｉ ： ０． １０〜０． ３
０ｗｔ％である。All of these are evaluated as equivalent in terms of such effects, and it is sufficient that at least one of them is contained. However, In is less than 0.02wt% and Sn is 0.05wt%.
If the Bi content is less than 0.05 wt%, the above effects may not be exhibited. On the other hand, In exceeds 0.2wt%, Sn exceeds 0.4wt%, and Bi exceeds 0.4vt%.
There is a danger that even if the amount is exceeded, the effect will be saturated, resulting in economic waste. A particularly preferable content range when one or more of In, Sn, and Bi is contained is In: 0
．． 03-0. ] 5vt%, Sn: 0°1.0~
0. 30wt%, B i : 0. 10-0. 3
It is 0wt%.
なお、ろう材の製造方法については特に限定するもので
はなく、例えば常法に従う押出法によって線材に押出し
ても良く、常法に従う熱間圧延、冷間圧延によって板材
等に製作しても良く、その他任意の製造手段を適用でき
る。The method for manufacturing the brazing filler metal is not particularly limited; for example, it may be extruded into a wire rod by an extrusion method according to a conventional method, or it may be manufactured into a plate material by hot rolling or cold rolling according to a conventional method. Any other manufacturing means can be applied.
ろう付に際し、上記ろう材はこれを鉄材とアルミニウム
材との接合予定部位の近傍に置きろう材の形で配置し、
あるいはアルミニウム材を心材として、ろう材を皮材と
するプレージングシートの形で供給する。そして、必要
に応じてフラックスを塗布したのち、鉄材とアルミニウ
ム材の組立物を加熱することによりろう付接合が達成さ
れる。ここに、ろう付は５７０°Ｃ以下の温度で行う必
要がある。ろう付温度が５７０°Ｃを超えると鉄材とア
ルミニウム材との接合界面にＦｅＡｆｌｓ系の脆い合金
層が形成され、接合部の強度を劣化させるからである。During brazing, the above-mentioned brazing material is placed near the area where the iron material and aluminum material are to be joined, and is placed in the form of a brazing material.
Alternatively, it is supplied in the form of a plating sheet with an aluminum material as the core material and a brazing material as the skin material. Then, after applying flux as necessary, the assembly of the iron material and the aluminum material is heated to achieve a brazed joint. Here, brazing must be performed at a temperature of 570°C or less. This is because if the brazing temperature exceeds 570°C, a FeAfls-based brittle alloy layer is formed at the bonding interface between the iron material and the aluminum material, degrading the strength of the joint.
もとより、ろう材の融点よりも低い温度ではろう付自体
が不可能となることから、ろう付温度はろう材の融点以
上かつ５７０℃以下の範囲に設定しなければならない。Of course, since brazing itself is impossible at a temperature lower than the melting point of the brazing filler metal, the brazing temperature must be set in a range above the melting point of the brazing filler metal and below 570°C.
また、合金層は時間と共に成長するため、ろう何時の加
熱保持時間は良好な接合が得られる範囲で極力短くする
のが好ましい。Furthermore, since the alloy layer grows over time, it is preferable to keep the heating time during brazing as short as possible within a range that provides good bonding.
特に５４０〜５７０℃の高温側では、保持時間を１０分
以下好ましくは５分以下にするのが良い。Particularly on the high temperature side of 540 to 570°C, the holding time is preferably 10 minutes or less, preferably 5 minutes or less.
実施例 次にこの発明の詳細な説明する。Example Next, this invention will be explained in detail.
第１図に示すように、５ＵＳ３０４からなる肉厚０．４
ｍｍのステンレスチューブ（１）とアルミニウム製のコ
ルゲートフィン（２）とを仮組した。コルゲートフィン
（２）としては、Ａ３００３からなる肉厚０．５ｍｍの
アルミニウム心材の両面にろう材をクラッドしたプレー
ジングシートを用いた。そして、ろう材として第１表に
示すように各種のものを用いることにより、複数種類の
組立物を製作した。なお、ろう材の肉厚はいずれも片面
ｏ、１ｍｍとした。また、ろう材単体の液相線温度を調
べたところ、第１表のとおりであった。As shown in Figure 1, the wall thickness is 0.4mm made of 5US304.
A mm stainless steel tube (1) and an aluminum corrugated fin (2) were temporarily assembled. As the corrugated fin (2), a plating sheet was used in which both sides of an aluminum core material made of A3003 and having a wall thickness of 0.5 mm were clad with a brazing material. A plurality of types of assemblies were manufactured by using various brazing materials as shown in Table 1. The thickness of the brazing filler metal was 1 mm on one side. In addition, when the liquidus temperature of the brazing filler metal alone was investigated, the results were as shown in Table 1.
次いで、塩素系フラックスを用いた炉中ろう付により、
雰囲気温度を第１表のように設定して上記各組立物をろ
う付した。Next, by furnace brazing using chlorine-based flux,
Each of the above assemblies was brazed with the ambient temperature set as shown in Table 1.
ろう付後、チューブ（１）とフィン（２）の接合部（３
）を目視観察した。また、各組立物につきチューブ（１
）とフィン（２）との接合界面のＦｅＡΩ３系合金層の
有無を顕微鏡で調べた。それらの結果を併せて第１表に
示す。After brazing, the joint (3) of the tube (1) and fin (2)
) was visually observed. Also, for each assembly there is a tube (1
) and the fin (2) were examined using a microscope for the presence or absence of a FeAΩ3 alloy layer at the bonding interface. The results are shown in Table 1.
［以下余白］
０
また、各紹立物に、漸増引張荷重を付与して接合強度の
強弱を調べたところ、本発明実施品はいずれもチューブ
（１）とフィン（２）との接合面の剥離よりも前にフィ
ン（２）が切断されたのに対し、比較品ではフィン（２
）の切断前に接合面で剥離を生じた。[Blank below] 0 In addition, when we examined the strength and weakness of the bonding strength by applying a gradually increasing tensile load to each introduced product, we found that all of the products implemented in the present invention had a weak bonding surface between the tube (1) and the fin (2). Fin (2) was cut before peeling, whereas fin (2) was cut off in the comparative product.
) peeling occurred at the joint surface before cutting.
また、Ａｕ−８ｖｔ％５ｉ−２０ｖｔ％Ｚｎ、ＡＱ−７
ｗｔ％５ｉ−３０ｖｔ％Ｚｎ−１，ｖｔ％Ｂｅ。Also, Au-8vt%5i-20vt%Zn, AQ-7
wt%5i-30vt%Zn-1, vt%Be.
Ａｎ−１０ｗｔ％５ｔ−２５ｖｔ％Ｚｎ−０，５ｗｔ％
Ｃｕ、Ａ、Ｑ−４ｖｔ％Ｓｔ−５０ｗｔ％Ｚｎ−０゜１
５ｗｔ％Ｓｎの各組成からなるろう祠を用いて５４０〜
５５０℃の温度で上記と同様のろう付を行ったところ、
接合界面のＦｅＡΩ３系合金層はやはり認められなかっ
た。An-10wt%5t-25vt%Zn-0.5wt%
Cu, A, Q-4vt%St-50wt%Zn-0゜1
540 ~ using a wax shrine consisting of each composition of 5wt%Sn
When brazing was performed in the same manner as above at a temperature of 550°C,
The FeAΩ3-based alloy layer at the bonding interface was also not observed.
以上の試験結果から、本発明によれば、接合界面におけ
るＦｅＡΩ３系合金層の形成を抑制でき、接合部の強度
を向上できることを確認しえた。From the above test results, it was confirmed that according to the present invention, the formation of a FeAΩ3-based alloy layer at the joint interface can be suppressed, and the strength of the joint can be improved.
発明の効果
２
この発明は上述の次第で、まず、ろう利としてへΩ−Ｓ
ｉ−高Ｚｎ系のものを用いるから、良好なろうイ」性は
これを維持しつつろう材の融点のみを従来のＡｎ−Ｓｉ
系のものに較べて格段に低くすることができる。しかも
、ろう材中に高濃度のＺｎが含有されているため、鉄材
との濡れか良く、良好な接合が可能となる。そして、こ
のように良好なろう付性を確保しかつろう材の低融点化
を図ったうえで、５７０°Ｃ以下の温度でろう付を行う
から、鉄材とアルミニウム材との接合界面におけるＦｅ
Ａｎ３系の脆い合金層の形成を抑制ないしはなくすこと
ができ、従って該合金層の存在による両部材の接合強度
の低下を防止しえて、強度に優れたろう付品の提供が可
能となる。その結果、従来では適用が困難であった風呂
釜、給湯器等の各種製品において、ろう付による鉄材と
アルミニウム材との接合が十分可能となり、ろう何遍用
範囲を拡大することができる。Effect of the invention 2 As described above, this invention first provides Ω-S as a wax advantage.
Since a high Zn-based material is used, it maintains good brazing properties while reducing only the melting point of the brazing material compared to conventional An-Si.
It can be made much lower than other systems. Furthermore, since the brazing filler metal contains a high concentration of Zn, it has good wettability with the iron material, allowing for good bonding. In this way, after ensuring good brazing properties and lowering the melting point of the brazing material, brazing is performed at a temperature of 570°C or less, so Fe at the bonding interface between iron and aluminum materials is reduced.
The formation of a brittle An3-based alloy layer can be suppressed or eliminated, thereby preventing a decrease in the bonding strength of both members due to the presence of the alloy layer, making it possible to provide a brazed product with excellent strength. As a result, it has become possible to join iron and aluminum materials by brazing to various products such as bathtubs and water heaters, which were previously difficult to apply, and the range of applications for brazing can be expanded.
３
第１図は実施例で用いたろうイ」試験片の正面図である
。
（１）・・・ステンレスチューブ、（２）・・アルミニ
ウムフィン。
以 」ニ
４
第１
図3. Figure 1 is a front view of the wax test piece used in the examples. (1)...Stainless steel tube, (2)...Aluminum fin. Figure 1
Claims (1)
してＡｌ−Ｓｉ−高Ｚｎ系のろう材を使用するとともに
、５７０℃以下の温度でろう付することを特徴とする鉄
材とアルミニウム材とのろう付方法。A method for brazing iron and aluminum materials, characterized by using an Al-Si-high Zn brazing material as a brazing material and brazing at a temperature of 570°C or less. Attachment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8710490A JPH0729202B2 (en) | 1990-03-30 | 1990-03-30 | Brazing method of iron material and aluminum material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8710490A JPH0729202B2 (en) | 1990-03-30 | 1990-03-30 | Brazing method of iron material and aluminum material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03285761A true JPH03285761A (en) | 1991-12-16 |
| JPH0729202B2 JPH0729202B2 (en) | 1995-04-05 |
Family
ID=13905639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8710490A Expired - Fee Related JPH0729202B2 (en) | 1990-03-30 | 1990-03-30 | Brazing method of iron material and aluminum material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729202B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023311A (en) * | 2005-07-13 | 2007-02-01 | Showa Denko Kk | Clad material and manufacturing method therefor |
| JP2007247024A (en) * | 2006-03-17 | 2007-09-27 | Kobe Steel Ltd | Steel sheet to be brazing-jointed with aluminum-based material, jointing method using the steel sheet, and bonded joint |
| JP2008093714A (en) * | 2006-10-13 | 2008-04-24 | Nippon Light Metal Co Ltd | Brazed body of stainless steel material and aluminum alloy material, and brazing method |
| JP2009148772A (en) * | 2007-12-19 | 2009-07-09 | Nisshin Steel Co Ltd | Brazed and joined structure of stainless steel and aluminum alloy, and brazing method therefor |
| JP2010099739A (en) * | 2008-09-29 | 2010-05-06 | Honda Motor Co Ltd | Brazing filler metal, and jointed structure of metal members, and joining method of metal members |
| EP2478992A3 (en) * | 2008-04-21 | 2012-11-07 | Honda Motor Co., Ltd. | Method for joining metallic members and brazing filler metal |
-
1990
- 1990-03-30 JP JP8710490A patent/JPH0729202B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023311A (en) * | 2005-07-13 | 2007-02-01 | Showa Denko Kk | Clad material and manufacturing method therefor |
| JP2007247024A (en) * | 2006-03-17 | 2007-09-27 | Kobe Steel Ltd | Steel sheet to be brazing-jointed with aluminum-based material, jointing method using the steel sheet, and bonded joint |
| JP4640995B2 (en) * | 2006-03-17 | 2011-03-02 | 株式会社神戸製鋼所 | Steel plate for brazing joint with aluminum material, joining method and joint using the steel plate |
| JP2008093714A (en) * | 2006-10-13 | 2008-04-24 | Nippon Light Metal Co Ltd | Brazed body of stainless steel material and aluminum alloy material, and brazing method |
| JP2009148772A (en) * | 2007-12-19 | 2009-07-09 | Nisshin Steel Co Ltd | Brazed and joined structure of stainless steel and aluminum alloy, and brazing method therefor |
| EP2478992A3 (en) * | 2008-04-21 | 2012-11-07 | Honda Motor Co., Ltd. | Method for joining metallic members and brazing filler metal |
| EP2614916A1 (en) * | 2008-04-21 | 2013-07-17 | Honda Motor Co., Ltd. | Method for joining metallic members and brazing filler metal |
| US8492675B2 (en) | 2008-04-21 | 2013-07-23 | Honda Motor Co., Ltd. | Laser welding Al and Fe members with Zn filler |
| US20130272915A1 (en) * | 2008-04-21 | 2013-10-17 | Honda Motor Co., Ltd. | Method for joining metallic members, joint structure and brazing filler metal |
| JP2010099739A (en) * | 2008-09-29 | 2010-05-06 | Honda Motor Co Ltd | Brazing filler metal, and jointed structure of metal members, and joining method of metal members |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729202B2 (en) | 1995-04-05 |
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