JPH04325643A - Heat exchanger fin material and its production - Google Patents
Heat exchanger fin material and its productionInfo
- Publication number
- JPH04325643A JPH04325643A JP3122117A JP12211791A JPH04325643A JP H04325643 A JPH04325643 A JP H04325643A JP 3122117 A JP3122117 A JP 3122117A JP 12211791 A JP12211791 A JP 12211791A JP H04325643 A JPH04325643 A JP H04325643A
- Authority
- JP
- Japan
- Prior art keywords
- fin material
- brazing
- strength
- heat exchanger
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000005219 brazing Methods 0.000 claims abstract description 42
- 230000000694 effects Effects 0.000 claims abstract description 20
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 238000005482 strain hardening Methods 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000005097 cold rolling Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 229910018131 Al-Mn Inorganic materials 0.000 description 4
- 229910018461 Al—Mn Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 229910018566 Al—Si—Mg Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910018085 Al-F Inorganic materials 0.000 description 1
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018137 Al-Zn Inorganic materials 0.000 description 1
- 229910018179 Al—F Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910018573 Al—Zn Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229910007610 Zn—Sn Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は真空ろう付け法により組
立てられる自動車用等の熱交換器の犠牲陽極効果を有す
るフィン材に係り、特にろう付け後の強度に優れ、自動
車用熱交換器の軽量化を可能にするフィン材とその製造
方法に関するものである。[Field of Industrial Application] The present invention relates to a fin material having a sacrificial anode effect for heat exchangers for automobiles, etc., which is assembled by vacuum brazing, and has particularly excellent strength after brazing. The present invention relates to a fin material that enables weight reduction and a manufacturing method thereof.
【０００２】0002
【従来の技術】自動車用熱交換器（ラジエーター、コン
デンサー、エバボレータ等）は、ブレージングシートよ
りなるプレート材とコルゲートフィン材より構成され、
真空ろう付け法により組立てられている。[Prior Art] Automotive heat exchangers (radiators, condensers, evaporators, etc.) are composed of plate materials made of brazing sheets and corrugated fin materials.
Assembled using vacuum brazing method.
【０００３】真空ろう付け法により組立られる熱交換器
のチューブやタンク等を構成するブレージングシートに
は、芯材にＡｌ−Ｍｎ系合金３００３を用い、ろう材に
Ａｌ−Ｓｉ−Ｍｇ系合金４００４や４１０４が一般的に
使用されている。一方、フィン材としては一般的にＡｌ
−Ｍｎ系合金３００３が用いられている。[0003] Brazing sheets constituting tubes, tanks, etc. of heat exchangers assembled by vacuum brazing use Al-Mn alloy 3003 as the core material, and Al-Si-Mg alloy 4004 or the like as the brazing material. 4104 is commonly used. On the other hand, Al is generally used as a fin material.
-Mn-based alloy 3003 is used.
【０００４】ところで、自動車用熱交換器において、チ
ューブやタンクの貫通腐食を防止するために、フィン材
を犠牲陽極として用いることが検討され、一部実用化さ
れているが、問題点も多い。すなわち、フィン材として
一般的に用いられている３００３合金は強度、ろう付け
性等は良好であるものの、ブレージングシートとの孔食
電位の差が殆どないため、犠牲陽極効果は得られない。By the way, in an automobile heat exchanger, in order to prevent penetration corrosion of tubes and tanks, the use of fin materials as sacrificial anodes has been studied and partially put into practical use, but there are many problems. That is, although 3003 alloy, which is commonly used as a fin material, has good strength and brazing properties, it cannot provide a sacrificial anode effect because there is almost no difference in pitting potential from the brazing sheet.
【０００５】そこで、真空ろう付け法により組立られる
熱交換器のフィン材を犠牲陽極として使用するため、フ
ィン材として、■真空ろう付け法においても蒸発しない
で犠牲陽極効果の得られるＡｌ−Ｓｎ系合金の使用、■
真空ろう付け法により蒸発する量を予め予想したＡｌ−
Ｚｎ系合金（Ｚｎ１．５％以上）の使用、が行われてい
る。Therefore, in order to use the fin material of the heat exchanger assembled by the vacuum brazing method as a sacrificial anode, the fin material is: Use of alloys,■
Al-
Zn-based alloys (Zn 1.5% or more) are being used.
【０００６】[0006]
【発明が解決しようとする課題】しかし乍ら、このよう
なフィン材には、以下に示すような問題点がある。まず
、犠牲陽極フィン材として用いられているアルミニウム
合金としては、Ａｌ−１．２％Ｍｎ−０．１％Ｓｎ系の
合金が知られているが、本合金は熱間圧延時に割れを生
じ易く、またスクラップの管理、処理に問題があるため
、素材コストが上昇するという問題がある。However, such fin materials have the following problems. First, as an aluminum alloy used as a sacrificial anode fin material, an Al-1.2%Mn-0.1%Sn alloy is known, but this alloy tends to crack during hot rolling. Additionally, there is a problem in the management and processing of scraps, which increases material costs.
【０００７】また、Ａｌ−１．２％Ｍｎ−１．５％Ｚｎ
系合金等のＡｌ−Ｚｎ系合金（特開昭５４−８０２２０
号、同５５−６５８９６号、同５６−１４２８４５号、
同６０−２１１０５５号）も検討されてきているが、犠
牲陽極効果が安定して得られない欠点がある。また、Ｓ
ｎとＺｎを併用したＡｌ−Ｚｎ−Ｓｎ系合金（特開昭６
０−８９５４０号、同６０−２１５７２９号等）も提案
されているが、同様の問題がある。[0007]Al-1.2%Mn-1.5%Zn
Al-Zn based alloys such as
No. 55-65896, No. 56-142845,
60-211055) has also been studied, but it has the drawback that the sacrificial anode effect cannot be stably obtained. Also, S
Al-Zn-Sn alloy using a combination of n and Zn (Japanese Unexamined Patent Application Publication No. 6
No. 0-89540, No. 60-215729, etc.) have also been proposed, but they have similar problems.
【０００８】上記のように、フィン材は犠牲陽極効果を
有するもので、薄肉化の要請があり、このような薄肉化
に対応するには、ろう付け後の強度の改善が望まれてい
る。As described above, the fin material has a sacrificial anode effect, and there is a demand for thinning of the fin material.In order to meet such thinning, it is desired to improve the strength after brazing.
【０００９】本発明は、上記従来技術の問題点を解決す
るためになされたものであって、真空ろう付け法により
組立てられる熱交換器のフィン材として、ろう付け後の
強度に優れ、かつＳｎ等の元素を添加することなく犠牲
陽極効果を有するフィン材を提供し、またその製造方法
を提供することを目的とするものである。The present invention has been made in order to solve the problems of the prior art described above, and uses Sn as a fin material for a heat exchanger assembled by vacuum brazing, which has excellent strength after brazing. It is an object of the present invention to provide a fin material having a sacrificial anode effect without adding any elements such as fin materials, and to provide a method for manufacturing the same.
【００１０】0010
【課題を解決するための手段】本発明者は、前記目的を
達成し得るフィン材の組成並びに製造工程について鋭意
研究を重ねた。[Means for Solving the Problems] The present inventor has made extensive research into the composition and manufacturing process of a fin material that can achieve the above object.
【００１１】前述の如く、真空ろう付け法により組立て
られる熱交換器のチューブやタンクを構成するブレージ
ングシートには、芯材にＡｌ−Ｍｎ系合金３００３を用
い、ろう材にＡｌ−Ｓｉ−Ｍｇ系合金４００４や４１０
４が一般的に使用されている。As mentioned above, the brazing sheets constituting the tubes and tanks of heat exchangers assembled by vacuum brazing use Al-Mn alloy 3003 as the core material and Al-Si-Mg alloy as the brazing material. Alloy 4004 and 410
4 is commonly used.
【００１２】これらのブレージングシートに対し、フィ
ン材を犠牲陽極的に作用させるためには、フィン材の孔
食電位をブレージングシート表面の孔食電位よりも３０
ｍＶ以上卑にする必要があることが種々の実験により判
明した。In order for the fin material to act as a sacrificial anode on these brazing sheets, the pitting potential of the fin material must be 30% lower than the pitting potential of the surface of the brazing sheet.
It has been found through various experiments that it is necessary to make the voltage less than mV.
【００１３】合金元素としてＳｎやＺｎを使用せずにブ
レージングシートに対して犠牲陽極効果を有するアルミ
ニウム合金としては、例えば純アルミニウムが知られて
いるが、フィン材としての強度が不十分なため、実用的
でない。[0013] For example, pure aluminum is known as an aluminum alloy that has a sacrificial anode effect on the brazing sheet without using Sn or Zn as an alloying element, but it has insufficient strength as a fin material. Not practical.
【００１４】また、フィン材として一般的に用いられて
いるＡｌ−Ｍｎ系合金３００３は、強度及びろう付け性
等は良好であるが、ブレージングシートとの孔食電位の
差が殆どないため、犠牲陽極効果は得られない。[0014]Al-Mn alloy 3003, which is commonly used as a fin material, has good strength and brazing properties, but because there is almost no difference in pitting potential with the brazing sheet, it is not sacrificial. No anode effect can be obtained.
【００１５】そこで、本発明者は、従来のフィン材に用
いられているＡｌ−Ｍｎ系合金の孔食電位を卑に移行さ
せる方法を検討した結果、Ｍｎ固溶量を抑制させること
が最も効果的であることが判明した。具体的には、Ｍｎ
添加量の規制、Ｆｅ添加によるＭｎのＡｌ−Ｍｎ−Ｆｅ
系化合物としての固定を行い、孔食電位を卑に移行させ
、Ｍｎ添加量を規制することにより強度が低下するが、
この強度低下に対してはＭｇとＳｉの添加が有効である
こと、また耐サグ性、耐座屈性の向上には、再結晶を抑
制させる効果が大きく、かつ電位を貴に移行させないＺ
ｒを添加すること、及び冷間加工後の最終焼鈍条件をコ
ントロールすることがろう付け後の強度向上に有効であ
ること、等が明らかになり、ここに本発明をなしたもの
である。[0015] Therefore, the present inventor investigated a method of shifting the pitting corrosion potential of the Al-Mn alloy used in conventional fin materials to a less noble one, and found that suppressing the amount of solid solution of Mn is most effective. It turned out to be true. Specifically, Mn
Regulation of addition amount, Al-Mn-Fe of Mn by addition of Fe
By fixing Mn as a system compound, shifting the pitting corrosion potential to a less noble state, and regulating the amount of Mn added, the strength decreases.
The addition of Mg and Si is effective against this decrease in strength, and the addition of Mg and Si is effective in improving sag resistance and buckling resistance.
It has become clear that adding r and controlling the final annealing conditions after cold working are effective in improving the strength after brazing, and the present invention has been made here.
【００１６】すなわち、本発明は、Ｍｇ：０．３〜１．
０％、Ｓｉ：０．３〜０．８％、Ｍｎ：０．０５〜０．
３％、Ｆｅ：０．０５〜０．３％及びＺｎ：０．１〜０
．８％を含み、Ｔｉ又はＺｒの１種以上：０．０１〜０
．２％を含み、残部が実質的にＡｌよりなることを特徴
とする真空ろう付け法により組立てられる熱交換器用で
ろう付け後の強度に優れ、かつ犠牲陽極効果を有するフ
ィン材を要旨とするものである。That is, in the present invention, Mg: 0.3 to 1.
0%, Si: 0.3-0.8%, Mn: 0.05-0.
3%, Fe: 0.05-0.3% and Zn: 0.1-0
．． Contains 8%, one or more of Ti or Zr: 0.01 to 0
．． A fin material for a heat exchanger assembled by a vacuum brazing method, containing 2% Al and the remainder substantially consisting of Al, which has excellent strength after brazing and has a sacrificial anode effect. It is.
【００１７】また、その製造方法は、前記化学成分を有
するＡｌ合金フィン材を製造するに当り、冷間加工後の
最終焼鈍を、１８０〜２６０℃×２０〜６００分の条件
で行うことを特徴とするものである。[0017] Further, the manufacturing method is characterized in that, in manufacturing the Al alloy fin material having the above chemical composition, final annealing after cold working is performed under conditions of 180 to 260°C x 20 to 600 minutes. That is.
【００１８】以下に本発明を更に詳細に説明する。The present invention will be explained in more detail below.
【００１９】[0019]
【作用】前述のように、本発明は、真空ろう付け法によ
り組立られる熱交換器のフィン材であつて、アルミニウ
ムにとって特異な合金元素であるＳｎを含まずに犠牲陽
極特性を有するフィン材であり、冷間圧延後に最終焼鈍
を施すことによりフィン材としてのろう付け後に優れた
強度を得たものである。[Function] As mentioned above, the present invention is a fin material for a heat exchanger that is assembled by vacuum brazing, and is a fin material that does not contain Sn, which is an alloying element unique to aluminum, and has sacrificial anode properties. By subjecting it to final annealing after cold rolling, it has excellent strength after being brazed as a fin material.
【００２０】まず、本発明における化学成分の限定理由
について説明する。First, the reasons for limiting the chemical components in the present invention will be explained.
【００２１】Ｍｇ：Ｍｇはろう付け後の強度を得るため
に必要であるが、Ｍｎ量を０．３％以下に規制したため
、０．３〜１．０％の添加が必要である。Ｍｇ量が０．
３％未満では充分な強度が得られず、また１．０％を超
えて含有するとろう付け性の低下を招くので好ましくな
い。Mg: Mg is necessary to obtain strength after brazing, but since the amount of Mn is regulated to 0.3% or less, it is necessary to add 0.3 to 1.0%. Mg amount is 0.
If the content is less than 3%, sufficient strength cannot be obtained, and if the content exceeds 1.0%, the brazing properties will deteriorate, which is not preferable.
【００２２】Ｓｉ：Ｓｉはろう付け後の強度を向上させ
る合金元素として添加される。しかし、添加量が０．３
％未満では充分な強度が得られず、また０．８％を超え
て添加すると、強度は向上するものの、融点が低下し、
耐座屈性を低下させるので好ましくない。したがって、
ろう付け性を阻害することなく強度が向上できるＳｉの
添加量は０．３〜０．８％の範囲に限定される。Si: Si is added as an alloying element to improve the strength after brazing. However, the amount added is 0.3
If it is less than 0.8%, sufficient strength cannot be obtained, and if it is added in excess of 0.8%, although the strength improves, the melting point decreases,
This is not preferable because it reduces buckling resistance. therefore,
The amount of Si added that can improve strength without impairing brazing properties is limited to a range of 0.3 to 0.8%.
【００２３】Ｍｎ：Ｍｎはろう付け時の強度及びろう付
け後の強度、ろう付け性の確保に必要な元素であるが、
０．０５％未満では効果が少なく、反面、固溶量が増大
するとアルミニウム合金の孔食電位が貴に移行するため
、固溶量は極力抑制する必要があるため、添加量の上限
を０．３％とする。Mn: Mn is an element necessary to ensure strength during brazing, strength after brazing, and brazability.
If it is less than 0.05%, the effect will be small, but on the other hand, if the amount of solid solution increases, the pitting potential of the aluminum alloy will shift to a higher level. Therefore, the amount of solid solution must be suppressed as much as possible, so the upper limit of the amount added is set at 0.05%. 3%.
【００２４】Ｆｅ：ＦｅはＭｎとＡｌ−Ｍｎ−Ｆｅ系の
化合物を作って析出し、固溶Ｍｎ量を抑制させるのに有
効である。しかし、０．０５％未満では効果が少なく、
また０．３％を超えて含有するとＡｌ−Ｆｅ系化合物と
なって析出して耐食性を低下させ、また、アルミニウム
合金の組織を微細化し、耐サグ性、耐座屈性を低下させ
るので好ましくない。したがって、Ｆｅ量は０．０５〜
０．３％とする。Fe: Fe forms and precipitates an Al--Mn--Fe system compound with Mn, and is effective in suppressing the amount of dissolved Mn. However, if it is less than 0.05%, the effect is small;
Moreover, if the content exceeds 0.3%, it becomes an Al-Fe-based compound and precipitates, reducing corrosion resistance, and also makes the structure of the aluminum alloy finer, reducing sag resistance and buckling resistance, which is not preferable. . Therefore, the amount of Fe is 0.05~
It shall be 0.3%.
【００２５】なお、Ｍｎ固溶量を極力抑制し、Ａｌ−Ｆ
ｅ系化合物の析出を抑制するのが好ましく、そのために
は上記ＭｎとＦｅについて、Ｍｎ／Ｆｅ比を１〜３の範
囲に規制するように含有させるのが好ましい。[0025] Furthermore, the amount of Mn solid solution is suppressed as much as possible, and Al-F
It is preferable to suppress the precipitation of e-based compounds, and for that purpose, it is preferable to contain the above-mentioned Mn and Fe so that the Mn/Fe ratio is controlled within the range of 1 to 3.
【００２６】Ｚｎ：Ｚｎは真空炉のメンテナンスを容易
にする作用がある。しかし、０．１％未満ではその効果
が不十分であり、また０．８％を超えると炉の汚染が促
進されるため、添加量は０．１〜０．８％の範囲とする
。Zn: Zn has the effect of facilitating maintenance of the vacuum furnace. However, if it is less than 0.1%, the effect is insufficient, and if it exceeds 0.8%, contamination of the furnace will be promoted, so the amount added should be in the range of 0.1 to 0.8%.
【００２７】Ｔｉ及びＺｒ：Ｔｉ及びＺｒはフィン材の
組織をコントロールし、ろう付け時の耐座屈性を向上さ
せるのに有効である。しかし、０．０１％未満ではその
効果が不十分であり、また０．２％を超えると効果は飽
和し、逆に粗大金属間化合物が形成され、加工性の低下
を招くので好ましくない。したがって、Ｔｉ及びＺｒは
１種又は２種で０．０１〜０．２％の範囲とする。Ti and Zr: Ti and Zr are effective in controlling the structure of the fin material and improving buckling resistance during brazing. However, if it is less than 0.01%, the effect is insufficient, and if it exceeds 0.2%, the effect is saturated, and on the contrary, coarse intermetallic compounds are formed, resulting in a decrease in workability, which is not preferable. Therefore, Ti and Zr may be contained singly or in combination in a range of 0.01 to 0.2%.
【００２８】上記の化学成分を有し、残部が実質的にＡ
ｌからなるＡｌ合金フィン材は、常法により製造される
が、本発明の場合、冷間圧延後の最終焼鈍条件を規制す
るものである。[0028] It has the above chemical components, and the remainder is substantially A.
The Al alloy fin material consisting of L is manufactured by a conventional method, but in the case of the present invention, the final annealing conditions after cold rolling are regulated.
【００２９】すなわち、ろう付け後の強度はフィン材の
製造条件に大きく依存しており、常法により均熱処理後
に熱間圧延を行い、冷間圧延を行うが、冷間圧延後に最
終で調質焼鈍を行うのは強度を向上させるためである。In other words, the strength after brazing largely depends on the manufacturing conditions of the fin material, and in the conventional method hot rolling is performed after soaking, followed by cold rolling. The purpose of annealing is to improve strength.
【００３０】焼鈍条件は、バッチ炉を使用したときは、
１８０℃未満では保持時間が６００分以上必要となるた
め生産性が悪く、製造コストを上昇させる。また２６０
℃を超えて焼鈍すると保持時間が短いために安定した熱
処理を行うことが難しい。以上のことから、最終焼鈍条
件は１８０〜２６０℃×２０〜６００分とする。[0030]The annealing conditions are as follows when a batch furnace is used:
If it is less than 180°C, a holding time of 600 minutes or more is required, resulting in poor productivity and increased manufacturing costs. 260 again
When annealing is performed at a temperature exceeding ℃, it is difficult to perform stable heat treatment because the holding time is short. From the above, the final annealing conditions are 180-260°C x 20-600 minutes.
【００３１】次に本発明の実施例を示す。Next, examples of the present invention will be shown.
【００３２】[0032]
【表１】
に示す化学成分を有するアルミニウム合金について、同
表に示す条件の最終焼鈍を含む工程により、０．１ｍｍ
板厚のアルミニウム合金フィン材（供試材）を製造し、
以下の実験に供した。なお、製造工程は、Ｈ２４材の場
合は均熱処理→熱間圧延→冷間圧延→最終焼鈍であり、
Ｈ１４材の場合は均熱処理→熱間圧延→冷間圧延（中間
焼鈍を含む）である。[Table 1] For an aluminum alloy having the chemical composition shown in the table, a process including final annealing under the conditions shown in the table was performed to obtain a 0.1 mm
Manufacture a thick aluminum alloy fin material (sample material),
It was used in the following experiments. In addition, in the case of H24 material, the manufacturing process is soaking treatment → hot rolling → cold rolling → final annealing,
In the case of H14 material, the process is soaking treatment → hot rolling → cold rolling (including intermediate annealing).
【００３３】[0033]
【実施例１】得られた供試材を[Example 1] The obtained test material
【表２】
に示す真空ろう付け相当加熱（真空度２×１０−４Ｔｏ
ｒｒの真空中で５９５℃×３ｍｉｎ加熱）した後、機械
的性質の測定を行った。その結果を表２に併記する。[Table 2] Equivalent heating for vacuum brazing (degree of vacuum 2×10-4To
After heating at 595° C. for 3 minutes in a vacuum of 50° C., mechanical properties were measured. The results are also listed in Table 2.
【００３４】表２より明らかなように、本発明材は何れ
も、従来よりフィン材として多用されている３００３合
金と比較すると、かなり高強度が得られている。また、
同じ化学成分を有するＨ１４タイプのフィン材（比較例
）と比らべても、高強度が得られている。As is clear from Table 2, all of the materials of the present invention have significantly higher strength than the 3003 alloy, which has conventionally been widely used as a fin material. Also,
Even when compared with H14 type fin material (comparative example) having the same chemical composition, high strength is obtained.
【００３５】[0035]
【実施例２】供試材を２×１０−４Ｔｏｒｒの真空中で
５９５℃×３ｍｉｎ加熱した後、電気化学的特性の測定
を行った。その結果を表２に併記する。[Example 2] A sample material was heated at 595° C. for 3 minutes in a vacuum of 2×10 −4 Torr, and then its electrochemical properties were measured. The results are also listed in Table 2.
【００３６】表２よりわかるように、本発明材は何れも
、従来よりフィン材として多用されている３００３合金
に比べ、より卑な孔食電位を示している。したがって、
チューブブレージングシートに対して電気化学的に卑で
あるため、少なくとも腐食を促進させることはない。As can be seen from Table 2, all of the materials of the present invention exhibit a more base pitting potential than the 3003 alloy, which has conventionally been widely used as a fin material. therefore,
Since it is electrochemically less noble with respect to tube brazing sheets, it does not promote corrosion at least.
【００３７】[0037]
【発明の効果】以上詳述したように、本発明によれば、
犠牲陽極効果を有するフィン材において優れたろう付け
後強度が得られる。したがって、熱交換器のコストダウ
ン、軽量化等、工業上顕著な効果が得られるものである
。[Effects of the Invention] As detailed above, according to the present invention,
Excellent post-brazing strength can be obtained with fin materials that have a sacrificial anode effect. Therefore, significant industrial effects such as cost reduction and weight reduction of the heat exchanger can be obtained.
Claims (2)
３〜１．０％、Ｓｉ：０．３〜０．８％、Ｍｎ：０．０
５〜０．３％、Ｆｅ：０．０５〜０．３％及びＺｎ：０
．１〜０．８％を含み、Ｔｉ又はＺｒの１種以上：０．
０１〜０．２％を含み、残部が実質的にＡｌよりなるこ
とを特徴とする真空ろう付け法により組立てられる熱交
換器用でろう付け後の強度に優れ、かつ犠牲陽極効果を
有するフィン材。Claim 1: In weight % (the same applies hereinafter), Mg: 0.
3-1.0%, Si: 0.3-0.8%, Mn: 0.0
5-0.3%, Fe: 0.05-0.3% and Zn: 0
．． 1 to 0.8%, one or more of Ti or Zr: 0.
A fin material for a heat exchanger assembled by a vacuum brazing method, which has excellent strength after brazing and has a sacrificial anode effect, characterized by containing 0.01 to 0.2% and the remainder substantially consisting of Al.
ｌ合金フィン材を製造するに当り、冷間加工後の最終焼
鈍を、１８０〜２６０℃×２０〜６００分の条件で行う
ことを特徴とする真空ろう付け法により組立てられる熱
交換器用でろう付け後の強度に優れ、かつ犠牲陽極効果
を有するフィン材の製造方法。Claim 2: A having the chemical component according to claim 1.
l When producing alloy fin materials, brazing is used for heat exchangers assembled by vacuum brazing, which is characterized by performing final annealing after cold working at 180 to 260°C for 20 to 600 minutes. A method for manufacturing a fin material that has excellent strength and a sacrificial anode effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3122117A JPH04325643A (en) | 1991-04-24 | 1991-04-24 | Heat exchanger fin material and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3122117A JPH04325643A (en) | 1991-04-24 | 1991-04-24 | Heat exchanger fin material and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04325643A true JPH04325643A (en) | 1992-11-16 |
Family
ID=14828052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3122117A Pending JPH04325643A (en) | 1991-04-24 | 1991-04-24 | Heat exchanger fin material and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04325643A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002004690A2 (en) * | 2000-07-06 | 2002-01-17 | Alcan International Limited | Method of making aluminum foil for fins |
| WO2014065355A1 (en) * | 2012-10-26 | 2014-05-01 | 株式会社Uacj | Aluminum alloy brazing sheet for fin, heat exchanger, and method for producing heat exchanger |
| WO2017067647A1 (en) * | 2015-10-19 | 2017-04-27 | Trimet Aluminium Se | Aluminum alloy |
-
1991
- 1991-04-24 JP JP3122117A patent/JPH04325643A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002004690A2 (en) * | 2000-07-06 | 2002-01-17 | Alcan International Limited | Method of making aluminum foil for fins |
| WO2002004690A3 (en) * | 2000-07-06 | 2002-04-04 | Alcan Int Ltd | Method of making aluminum foil for fins |
| US7172664B2 (en) | 2000-07-06 | 2007-02-06 | Novelis Inc. | Method of making aluminum foil for fins |
| KR100790202B1 (en) * | 2000-07-06 | 2007-12-31 | 노벨리스 인코퍼레이티드 | Method of making aluminum foil for fins |
| WO2014065355A1 (en) * | 2012-10-26 | 2014-05-01 | 株式会社Uacj | Aluminum alloy brazing sheet for fin, heat exchanger, and method for producing heat exchanger |
| JP2014084521A (en) * | 2012-10-26 | 2014-05-12 | Uacj Corp | Aluminum alloy made brazing sheet for fin, heat exchanger and method of producing heat exchanger |
| WO2017067647A1 (en) * | 2015-10-19 | 2017-04-27 | Trimet Aluminium Se | Aluminum alloy |
| AU2016343539B2 (en) * | 2015-10-19 | 2019-10-24 | Trimet Aluminium Se | Aluminum alloy |
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