JP3183545B2 - High strength aluminum brazing material for brazing sheet - Google Patents
High strength aluminum brazing material for brazing sheetInfo
- Publication number
- JP3183545B2 JP3183545B2 JP31306091A JP31306091A JP3183545B2 JP 3183545 B2 JP3183545 B2 JP 3183545B2 JP 31306091 A JP31306091 A JP 31306091A JP 31306091 A JP31306091 A JP 31306091A JP 3183545 B2 JP3183545 B2 JP 3183545B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- brazing material
- effect
- strength aluminum
- present
- 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
Links
Landscapes
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
【０００１】 本発明はアルミニウムろう材に関し、特
にろう付け接合部の強度を高くすることができるブレー
ジングシート用高強度アルミニウムろう材に関する。[0001] The present invention relates to an aluminum brazing material, blade which can be particularly high strength of the brazed joint
The present invention relates to a high-strength aluminum brazing material for a jing sheet .
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】自動車
は燃費向上、運動性能向上のため、その車体軽量化が唱
えられて久しい。近年は、社会環境、資源、政治、経済
面からの規制に加え、地球環境問題への対応を迫られて
おり、これらの軽量化要求は、従来とは異質の厳しい機
運となっている。2. Description of the Related Art Automobiles have long been proposed to reduce the weight of automobiles in order to improve fuel efficiency and exercise performance. In recent years, in addition to regulations on the social environment, resources, politics, and the economy, there has been a need to respond to global environmental issues.
【０００３】アルミニウムによる自動車の軽量化対象
は、多岐に渡り、重要な部品である熱交換器は最もその
要求が強い対象である。アルミニウムは軽量で、加工
性、耐食性及び熱電導率が優れるため、自動車の軽量化
を目的とした熱交換器への適用が他部品に先駆けて進め
られており、既に殆どの熱交換器にアルミニウム材料が
採用されている。したがって、この軽量化要求に応える
には、使用素材を薄肉化してゆく必要がある。[0003] There are a wide variety of objects for reducing the weight of automobiles made of aluminum, and heat exchangers, which are important components, are the objects most strongly demanded. Aluminum is lightweight, and has excellent workability, corrosion resistance, and thermal conductivity. Therefore, its application to heat exchangers for the purpose of reducing the weight of automobiles has been promoted ahead of other parts. Materials are adopted. Therefore, in order to meet this demand for weight reduction, it is necessary to make the material used thinner.
【０００４】自動車用熱交換器の代表的なものは、エア
コン系のエバポレータ、コンデンサー及びエンジン系の
ラジエータ、ヒータがあるが、これらはいずれも成形加
工したアルミニウム板材をろう付け法にて接合して組立
られている。従来、これらのアルミニウム板材を薄肉化
した場合、薄肉化によりろう材絶対量が減少し、フィレ
ット面積が減少し、その結果、ろう付け接合部の結合強
度が低下し、破断が発生する。したがって、当然ながら
製品の耐圧強度が低下するため、薄肉化による製品軽量
化が困難であった。Typical heat exchangers for automobiles include air conditioner evaporators, condensers, engine radiators, and heaters, all of which are formed by joining formed aluminum plates by brazing. Assembled. Conventionally, when the thickness of these aluminum plates is reduced, the thinner thickness reduces the absolute amount of the brazing filler metal, reduces the fillet area, and consequently lowers the bonding strength of the brazed joint and causes breakage. Therefore, the pressure resistance of the product naturally decreases, and it is difficult to reduce the product weight by reducing the thickness.
【０００５】本発明は、上記従来技術の欠点を解消し、
薄肉化しても、高い強度のろう付け接合部が得られるア
ルミニウムろう材を提供することを目的とするものであ
る。The present invention solves the above-mentioned disadvantages of the prior art,
It is an object of the present invention to provide an aluminum brazing material capable of obtaining a high-strength brazed joint even if the thickness is reduced.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するた
め、本発明者は、アルミニウムろう材の成分組成につい
て鋭意研究を重ねた結果、ろう材に特にＳrを添加する
ことによってろう付け部の凝固組織を著しく微細化する
ことができ、ろう付け接合部の強度を高くすることが可
能であることを知見し、この知見に基づいて更に実験を
重ねて、ここに本発明を完成したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have conducted intensive studies on the component composition of the aluminum brazing material, and as a result, the solidification of the brazed portion has been achieved particularly by adding Sr to the brazing material. The inventors have found that the structure can be remarkably refined and that the strength of the brazed joint can be increased, and further experiments have been repeated based on this finding to complete the present invention. .
【０００７】 すなわち、本発明は、必須成分として、
Ｓｉ：７〜１３％、Ｓｒ：０．０２〜０．２％及びＮ
ａ：０．０００５〜０．０１％を含有し、必要に応じて
更にＭｇ：０．２〜３．０％及びＢｉ：０．０２〜０．
５％の１種又は２種を含有し、残部がＡｌ及び不可避的
不純物からなることを特徴とするブレージングシート用
高強度アルミニウムろう材を要旨とするものである。That is, the present invention provides, as an essential component,
Si: 7 to 13%, Sr: 0.02 to 0.2%, and N
a: 0.0005 to 0.01%, and if necessary, Mg: 0.2 to 3.0% and Bi: 0.02 to 0.
The gist of the present invention is a high-strength aluminum brazing material for a brazing sheet , characterized in that it contains 5% of one or two kinds, and the balance consists of Al and inevitable impurities.
【０００８】以下に本発明を更に詳細に説明する。Hereinafter, the present invention will be described in more detail.
【０００９】[0009]
【００１０】従来、ブレージングシート素材の製造時
に、ろう材にＰ、Ｓb、Ｎaを添加すると組織を微細化す
る効果が認められているが、Ｐ、Ｓbについては、ろう
付け時に再溶融させた場合、この効果はなくなり、ま
た、Ｎaについては、ろう付け時の再溶融時にも微細化
効果を有するが、添加量を多くすると、ろうの流動性が
低下するため、改善効果には限界があった。Conventionally, when P, Sb, and Na are added to the brazing material during the production of the brazing sheet material, the effect of making the structure finer has been recognized. However, P and Sb are remelted at the time of brazing. This effect disappears, and Na also has a finer effect at the time of re-melting at the time of brazing. However, as the amount of addition increases, the fluidity of the braze decreases, so the improvement effect is limited. .
【００１１】一方、Ｓrは、素材製造時及びろう付け時
の再溶融時においても著しい微細化効果を有することが
判明した。また、この効果はブレージングシートのクラ
ッド率の違いや、真空ろう付け法及びノコロック付け法
などのろう付け法の違いに影響されないことも判明し
た。本発明のアルミニウムろう材は、Ｓrのこの効果と
共に、薄肉化においても優れたろう付け性、良好なろう
付け接合部が得られるべく、以下に説明するように、成
分調整したものである。On the other hand, it has been found that Sr has a remarkable refining effect also at the time of material production and re-melting at the time of brazing. It was also found that this effect was not affected by the difference in the cladding ratio of the brazing sheet and the difference in the brazing method such as the vacuum brazing method and the Nokolock brazing method. The components of the aluminum brazing material of the present invention are adjusted as described below in order to obtain not only this effect of Sr but also excellent brazing properties in thinning and a good brazing joint.
【００１２】Ｓi：Ｓiはろう付け性を左右する重要な成
分である。しかし、７％より少ないと状態図的に溶融温
度が高くなり、健全なろう付けができない。一方、１３
％より多いと、溶融温度が低く、かつ溶融温度範囲が小
さくなるため、ろう材が健全に溶融しない。よって、Ｓ
i量を７〜１３％の範囲とする。Si: Si is an important component that affects the brazing property. However, if it is less than 7%, the melting temperature becomes high in a phase diagram, and sound brazing cannot be performed. On the other hand, 13
%, The melting temperature is low and the melting temperature range is small, so that the brazing material does not melt soundly. Therefore, S
The i amount is in the range of 7 to 13%.
【００１３】Ｓr：Ｓrは上述の如くろう材凝固後の組織
を著しく微細化し、ろう付け接合部の強度を著しく向上
させる効果がある。しかし、０.０２％より少ないと組
織微細化の効果が得られず、一方、０.２％より多くし
てもその効果が飽和する。よって、Ｓr量を０.０２〜
０.２％の範囲とする。Sr: Sr has the effect of remarkably refining the structure after solidification of the brazing material as described above and significantly improving the strength of the brazed joint. However, if it is less than 0.02%, the effect of making the structure finer cannot be obtained, while if it is more than 0.2%, the effect is saturated. Therefore, the amount of Sr is set to 0.02-
The range is 0.2%.
【００１４】Ｎa：Ｎaはアルミニウムろう材の素材製造
時に組織を微細化し、ろう付け後の組織微細化に効果が
ある成分であるが、０.０００５％より少ないとその効
果が得られない。一方、０.０１％より多いと、その効
果が飽和すると共に、ろうの流動性が低下するので好ま
しくない。よって、Ｎaは０.０００５〜０.０１％の範
囲とする。Na: Na is a component that refines the structure during the production of the aluminum brazing material and is effective in refining the structure after brazing. However, if it is less than 0.0005%, the effect cannot be obtained. On the other hand, if the content is more than 0.01%, the effect is saturated and the fluidity of the wax is undesirably reduced. Therefore, Na is set in the range of 0.0005 to 0.01%.
【００１５】以上の成分を必須成分とするが、必要に応
じて以下の成分の１種又は２種を適量にて添加すること
ができる。The above components are essential components, but one or two of the following components can be added in an appropriate amount as needed.
【００１６】Ｂi：Ｂiはろう付け性を向上させる元素で
あるが、０.０２％より少ないとその効果がなく、また
０.５％より多くしてもその効果が飽和するので、Ｂi量
は０.０２〜０.５％の範囲とする。Bi: Bi is an element for improving the brazing property. However, if the content is less than 0.02%, the effect is not obtained, and if the content is more than 0.5%, the effect is saturated. The range is from 0.02 to 0.5%.
【００１７】Ｍg：Ｍgは、真空ろう付け法においてはろ
う付け性を向上させる重要な成分である。しかし、０.
２％より少なくてはろう付け性向上の効果がなく、また
３.０％より多くしてもその効果が飽和するので、Ｍg量
は０.２〜３.０％の範囲とする。Mg: Mg is an important component for improving the brazing property in the vacuum brazing method. However, 0.
If the amount is less than 2%, there is no effect of improving the brazing properties, and if the amount is more than 3.0%, the effect is saturated. Therefore, the Mg content is in the range of 0.2 to 3.0%.
【００１８】なお、本発明のアルミニウムろう材は、種
々の態様が可能であり、例えば、適当な芯材の片面又は
両面にクラッドして使用できる。またろう付け法の種類
によってもその効果を損なわれることはない。The aluminum brazing material of the present invention can be in various modes. For example, it can be used by cladding one or both surfaces of a suitable core material. The effect is not impaired by the type of brazing method.
【００１９】次に本発明の実施例を示す。Next, an embodiment of the present invention will be described.
【００２０】[0020]
【表１】 に示す化学成分のろう材を、３００３合金(芯材)の両面
に各々１５％クラッドし、０.５mmの厚さとしたブレー
ジングシートを製造した。[Table 1] A brazing sheet having a thickness of 0.5 mm was produced by cladding a brazing filler metal having the chemical composition shown in Table 3 on both sides of a 3003 alloy (core material) at 15%.
【００２１】すなわち、芯材は、５０mmｔ×１４０mmｗ
×２４０mmｌの３００３合金鋳塊を面削して４５mm厚と
し、これに５９０℃×６hrの均熱処理を施した後、熱延
して３０mm厚としたものを用いた。また、ろう材は、５
０mmｔ×１４０mmｗ×２４０mmｌのアルミニウム合金鋳
塊を面削して４５mm厚とし、これに５１０℃×６hrの均
熱処理を施した後、熱延して６.４mm厚としたものを用
いた。得られた芯材とろう材を組合せて４８０℃で１時
間加熱し、熱延により４２.８mm厚を３.５mm厚にした
後、冷延にて０.５mm厚とし、これに３８０℃×３hrの
焼鈍を施して０.５mm厚のブレージングシートを得た。That is, the core material is 50 mm × 140 mm.
A surface ingot of a 3003 alloy ingot of 240 mml was cut to a thickness of 45 mm, subjected to a soaking treatment at 590 ° C for 6 hours, and then hot-rolled to a thickness of 30 mm. The brazing material is 5
A 0 mmt × 140 mmw × 240 mml aluminum alloy ingot was chamfered to a thickness of 45 mm, subjected to soaking at 510 ° C. for 6 hours, and then hot rolled to a thickness of 6.4 mm. The obtained core material and brazing material were combined, heated at 480 ° C. for 1 hour, hot-rolled to 42.5 mm thick to 3.5 mm thick, then cold-rolled to 0.5 mm thick, and then 380 ° C. × After annealing for 3 hours, a brazing sheet having a thickness of 0.5 mm was obtained.
【００２２】得られたブレージングシートを用いて、５
９５℃×２min、真空度５×１０-5Ｔorrのろう付け条件
で、図１に示すような形状のドロンカップ型エバポレー
タを試作し、耐圧強度を測定した。その結果を表１に併
記する。表１に示すように、本発明例はいずれも著しく
高い耐圧強度を示しており、フィレットの組織(本発明
例Ｎo.２)は、図２に示すように著しく微細化されてい
る。一方、比較例は耐圧強度が低く、フィレットの組織
(比較例Ｎo.５)は、図３に示すように微細な組織が得ら
れていない。Using the obtained brazing sheet, 5
Under a brazing condition of 95 ° C. × 2 min and a degree of vacuum of 5 × 10 −5 Torr, a drone cup type evaporator having a shape as shown in FIG. 1 was prototyped, and pressure resistance was measured. The results are also shown in Table 1. As shown in Table 1, each of the examples of the present invention shows a remarkably high compressive strength, and the structure of the fillet (Example No. 2 of the present invention) is extremely fine as shown in FIG. On the other hand, in the comparative example, the compressive strength was low, and the structure of the fillet was small.
In Comparative Example No. 5, a fine structure was not obtained as shown in FIG.
【００２３】[0023]
【発明の効果】以上詳述したように、本発明によれば、
薄肉化しても、高い強度のろう付け接合部が得られ、ま
た優れたろう付け作業性のアルミニウムろう材を提供す
ることができる。As described in detail above, according to the present invention,
Even if the thickness is reduced, a high-strength brazed joint can be obtained, and an aluminum brazing material having excellent brazing workability can be provided.
【図１】ドロンカップ型エバポレータろう付け試験片の
形状を示す図で、（ａ）は全体図、（ｂ）は（ａ）のＡ
部拡大図である。FIG. 1 is a view showing a shape of a brazing test piece of a drone cup type evaporator, where (a) is an overall view and (b) is A of (a).
It is a part enlarged view.
【図２】本発明例のフィレットのミクロ組織(金属組織)
を示す顕微鏡写真(×１００)である。FIG. 2 shows the microstructure (metal structure) of the fillet of the present invention.
7 is a photomicrograph (× 100) showing.
【図３】比較例のフィレットのミクロ組織(金属組織)を
示す顕微鏡写真(×１００)である。FIG. 3 is a micrograph (× 100) showing a microstructure (metal structure) of a fillet of a comparative example.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 35/28 C22C 21/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B23K 35/28 C22C 21/02
Claims (2)
て、Ｓｉ：７〜１３％、Ｓｒ：０．０２〜０．２％及び
Ｎａ：０．０００５〜０．０１％を含有し、残部がＡｌ
及び不可避的不純物からなることを特徴とするブレージ
ングシート用高強度アルミニウムろう材。Claims (1) In weight percent (hereinafter the same), Si: 7 to 13%, Sr: 0.02 to 0.2%, and Na: 0.0005 to 0.01%, The balance is Al
And Bureji characterized in that the unavoidable impurities
High-strength aluminum brazing material for bearing sheets .
０．０２〜０．５％の１種又は２種を含有している請求
項１に記載のブレージングシート用高強度アルミニウム
ろう材。2. Mg: 0.2-3.0% and Bi:
The high-strength aluminum brazing material for a brazing sheet according to claim 1, containing one or two kinds of 0.02 to 0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31306091A JP3183545B2 (en) | 1991-10-09 | 1991-10-09 | High strength aluminum brazing material for brazing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31306091A JP3183545B2 (en) | 1991-10-09 | 1991-10-09 | High strength aluminum brazing material for brazing sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05104281A JPH05104281A (en) | 1993-04-27 |
| JP3183545B2 true JP3183545B2 (en) | 2001-07-09 |
Family
ID=18036733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31306091A Expired - Fee Related JP3183545B2 (en) | 1991-10-09 | 1991-10-09 | High strength aluminum brazing material for brazing sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3183545B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039194A (en) * | 2001-07-30 | 2003-02-12 | Denso Corp | Brazing material for aluminum brazing sheet for heat exchanger and manufacturing method therefor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2721041B1 (en) * | 1994-06-13 | 1997-10-10 | Pechiney Recherche | Aluminum-silicon alloy sheet intended for mechanical, aeronautical and space construction. |
| JP2008068293A (en) * | 2006-09-14 | 2008-03-27 | Furukawa Sky Kk | Aluminum alloy brazing filler metal and aluminum alloy brazing sheet |
| JP6186146B2 (en) * | 2013-03-15 | 2017-08-23 | 株式会社Uacj | Heat exchanger |
| EP3029169B1 (en) * | 2013-07-29 | 2019-02-27 | UACJ Corporation | Aluminum-alloy clad member and method for producing the same |
| US9976200B2 (en) | 2014-01-10 | 2018-05-22 | Uacj Corporation | Cladded aluminum-alloy material and production method therefor, and heat exchanger using said cladded aluminum-alloy material and production method therefor |
-
1991
- 1991-10-09 JP JP31306091A patent/JP3183545B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039194A (en) * | 2001-07-30 | 2003-02-12 | Denso Corp | Brazing material for aluminum brazing sheet for heat exchanger and manufacturing method therefor |
| JP4636520B2 (en) * | 2001-07-30 | 2011-02-23 | 株式会社デンソー | Brazing material for aluminum brazing sheet for heat exchanger and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05104281A (en) | 1993-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4166613B2 (en) | Aluminum alloy fin material for heat exchanger and heat exchanger formed by assembling the fin material | |
| EP1183151B2 (en) | Brazing sheet | |
| JP4822277B2 (en) | Aluminum alloy brazing sheet for heat exchanger tubes with excellent brazing and corrosion resistance and heat exchanger tubes with excellent corrosion resistance | |
| JP2001001179A (en) | Aluminum alloy brazing sheet for vacuum soldering, having satisfactory corrosion resistance and heat exchanger using the same | |
| JP2002161323A (en) | Aluminum alloy fin-material for heat exchanger superior in formability and brazability | |
| US5398864A (en) | Corrosion-resistant aluminum alloy brazing composite | |
| JP3183545B2 (en) | High strength aluminum brazing material for brazing sheet | |
| US4511632A (en) | Aluminum alloy clad sheet having excellent high-temperature sagging resistance and thermal conductivity | |
| JP3360026B2 (en) | Brazing method of aluminum alloy brazing sheet for heat exchanger | |
| JPH06218575A (en) | Alloy for brazing | |
| JP3876505B2 (en) | Al alloy fin material for heat exchangers with excellent erosion resistance | |
| JP2002161324A (en) | Aluminum alloy fin-material for heat exchanger superior in formability and brazability | |
| JPH0790442A (en) | Aluminum alloy brazing sheet for heat exchanger and manufacture of aluminum alloy-made heat exchanger | |
| JPH07179973A (en) | Al alloy brazing sheet for vacuum brazing for structural member for heat exchanger, excellent in corrosion resistance | |
| JP3863595B2 (en) | Aluminum alloy brazing sheet | |
| JPH10158770A (en) | Brazing sheet for heat exchanger, excellent in corrosion resistance, and heat exchanger using the brazing sheet | |
| CN114173984B (en) | Aluminum alloy brazing sheet and method of manufacturing the same | |
| JPS6358217B2 (en) | ||
| JP2000096168A (en) | Aluminum alloy brazing filler metal and aluminum alloy brazing sheet | |
| JP2004218044A (en) | Aluminum alloy clad material for heat exchanger | |
| JPS63282230A (en) | Aluminum brazing sheet | |
| JPS59129749A (en) | Vacuum brazing sheet for aluminum | |
| JPH0239575B2 (en) | ||
| JP2773950B2 (en) | Manufacturing method of aluminum brazing sheet | |
| JPH0797652A (en) | Production of aluminum alloy brazing sheet fin material and heat exchanger made of aluminum alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080427 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090427 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100427 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |