JPH02243734A - Aluminum alloy for vacuum brazing sheet corrugated fin core material - Google Patents
Aluminum alloy for vacuum brazing sheet corrugated fin core materialInfo
- Publication number
- JPH02243734A JPH02243734A JP27813989A JP27813989A JPH02243734A JP H02243734 A JPH02243734 A JP H02243734A JP 27813989 A JP27813989 A JP 27813989A JP 27813989 A JP27813989 A JP 27813989A JP H02243734 A JPH02243734 A JP H02243734A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- aluminum alloy
- core material
- brazing sheet
- vacuum brazing
- 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
- 239000011162 core material Substances 0.000 title claims abstract description 10
- 238000005219 brazing Methods 0.000 title claims abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 title abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 14
- 230000007797 corrosion Effects 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 description 24
- 239000000956 alloy Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000007747 plating Methods 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
ω 産業上の利用分野
この発明は、優れた耐食性及び耐熱性を具有した真空ブ
レージングシートコルゲートフィン心材用アルミニウム
合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION ω Industrial Application Field This invention relates to an aluminum alloy for vacuum brazing sheet corrugated fin core material having excellent corrosion resistance and heat resistance.
（ロ）従来の技術と問題点
アルミニウムの真空ブレージングはカークーラーのコン
デンサー等に広く使用されているが、これに使用される
アルミニウム合金の耐食性及び耐熱性に関してはまだ一
部に問題を有している。この問題をコンデンサーの場合
を例にとって説明する。コンデンサーの構成は、チュー
ブＪＩＳＡ １０５０合金、フィンにはブレージングシ
ー１・か用いられており、プレージングシートは通常皮
材にはＡＡ ４００４合金又は４１０４合金が、また心
材にはＪＩＳ Ａ ３００３合金又は６９５１合金がそ
れぞれ使用されている。このように構成されたコンデン
サーがきびしい腐食環境にさらされると、ロウ継手部近
傍においてチューブ側に激しい腐食を生じ、チュブ内の
気密性が破れるということがあった。またフィンの板厚
は通常［１，ｌＧｍ１前後と薄く、かつ真空ブレージン
グ時には、６００℃前後の高温にさらされるため、時に
はフィンに歪みが生じ、商品価値を損ねる問題があった
。(b) Conventional technology and problems Aluminum vacuum brazing is widely used in car cooler condensers, etc., but there are still some problems with the corrosion resistance and heat resistance of the aluminum alloy used for this. There is. This problem will be explained using the case of a capacitor as an example. The structure of the capacitor is JISA 1050 alloy tube, and brazing sheet 1 is used for the fin, and the plating sheet is usually made of AA 4004 alloy or 4104 alloy for the skin material, and JIS A 3003 alloy or 6951 for the core material. Alloys are used. When a condenser constructed in this manner is exposed to a severe corrosive environment, severe corrosion occurs on the tube side near the solder joint, and the airtightness within the tube may be broken. In addition, the thickness of the fins is usually as thin as about 1.1 Gm1, and during vacuum brazing, the fins are exposed to high temperatures of about 600° C., which sometimes causes distortion in the fins, resulting in a loss of commercial value.
（ハ）問題点を解決するための手段
この発明は上記のような問題を解決する目的をもって種
々試験の結果、耐食性、耐熱性の問題は、プレージング
シートの心材用として用いられているＪＩＳ Ａ ３０
０３合金（Ａｌｌ −１，０〜１．５％Ｍｎ、０．０５
〜０．２０％Ｃｕ、 〜０．７％Ｆ ｅ−、〜０ 、６
％Ｓｉ）中に従来微量添加されていた元素とか、単に不
純物としである程度許容されていた元素とかが、上記性
能に著しい悪影響を及ぼすことを見出し、この事実に基
づいて開発したものであって、その特徴とするところは
、アルミニウム合金中の微量添加元素と不純物元素の許
容量を著しく制限し又、不純物元素の範囲の制限と意図
的な添加を行なったものであり、一つの発明の合金は、
Ｍｎ ０．５〜２．０％、Ｃｕ ０．００１〜０．０２
％を含有し、残余Ａ、Ｑと不可避的不純物からなる合金
であり、他の一つの発明の合金はＭｎ ０．５−２．０
％、Ｃｕ ０．００１−０，０２％、Ｓｔ ０．１５〜
１．０％、Ｆｅ ０．１〜０．５％を含有させた合金で
あって、何れの合金も既知のＪＩＳ Ａ ３００３合金
に較べて特にＣｕの含有量の少ないのが特長である。(c) Means for Solving the Problems This invention aims to solve the above-mentioned problems.As a result of various tests, the problems of corrosion resistance and heat resistance have been solved by JIS A, which is used for the core material of plating sheets. 30
03 alloy (All -1, 0~1.5% Mn, 0.05
~0.20%Cu, ~0.7%Fe-, ~0,6
It was discovered that elements that were conventionally added in small amounts to (%Si) or elements that were allowed to some extent as mere impurities had a significant negative effect on the above performance, and were developed based on this fact. The characteristics of this invention are that the permissible amount of trace addition elements and impurity elements in the aluminum alloy is significantly limited, and the range of impurity elements is limited and intentional addition is carried out, and the alloy of one invention is ,
Mn 0.5-2.0%, Cu 0.001-0.02
%, with the remainder A, Q and unavoidable impurities; another invention alloy is Mn 0.5-2.0
%, Cu 0.001-0.02%, St 0.15~
These alloys contain 1.0% and 0.1 to 0.5% of Fe, and each alloy is characterized by a particularly low content of Cu compared to the known JIS A 3003 alloy.
この発明の合金において、上記のように成分を限定した
理由の基になった本発明者らの行なった試験結果を示し
、理解を容易にする。In order to facilitate understanding, the test results conducted by the present inventors, which are the basis for limiting the components as described above, in the alloy of this invention will be shown.
第１図及び第２図は各種成分を所定の含有量（％）でプ
レージングシートの心材に添加した場合のプレージング
シートの耐熱性の変化を示す図表であって、耐熱性は第
３図に示すように台］の上端面部に重り体２によって試
験片を片持ち梁成に保持し、試験片の真空加熱後の垂下
量（ＩＩＩｌｌ）によって判定した。Figures 1 and 2 are charts showing changes in the heat resistance of the plating sheet when various components are added to the core material of the plating sheet at predetermined contents (%), and the heat resistance is shown in Figure 3. The test piece was held in a cantilever configuration by a weight 2 on the upper end surface of the table as shown in FIG.
耐熱性は垂下量が少ない程良好になる。なお、この時の
試験条件として板厚０．Ｅｉｍｍ、クラツド率は両面各
１５％、皮材合金１−１０％５ｉ−１，５％Ｍｇであっ
て、試験片の突き出し長さ６０ｍｍ５真空加熱を５ Ｘ
ｌｏ’ｔｏｒｒ、６０５℃×５分間で行なツタ。The smaller the amount of droop, the better the heat resistance becomes. The test conditions at this time were a plate thickness of 0. Eimm, cladding rate is 15% on each side, skin material alloy 1-10%5i-1.5%Mg, protrusion length of test piece 60mm5 vacuum heating 5X
Ivy at 605°C for 5 minutes at lo'torr.
第４図は心材中のＣｕ含有量と母材側の塩水噴霧試験（
５００時間）後の最大ピット深さとの関係を示す図表で
あって、この時の供試体の形態を第５図に示す。図中、
３は母材、４はブレージングシートを示す。Figure 4 shows the Cu content in the heartwood and the salt spray test on the base metal side (
FIG. 5 is a chart showing the relationship between the maximum pit depth after 500 hours, and the form of the specimen at this time is shown in FIG. In the figure,
3 represents the base material, and 4 represents the brazing sheet.
供試プレージングシートは耐熱試験で述べられた材料を
更に０．１［ｉ１迄圧延したものを使用し、６０５℃×
５分、５ Ｘ １０’ｔｏｒｒの真空加熱によって継手
を形成させた。供試体の寸法は母材を１．６ｍｍ厚Ｘ
７０ Ｘ １４０ｍｍとし、この面上にプレージングシ
ート２０Ｘ１４０ｍｍを７１１Ｉ１１の間隔で９枚立設
した。The sample plating sheet was made by further rolling the material mentioned in the heat resistance test to 0.1[i1], and was heated at 605℃×
The joint was formed by vacuum heating at 5 x 10'torr for 5 minutes. The dimensions of the specimen are base material 1.6mm thick
70 x 140 mm, and nine praising sheets 20 x 140 mm were stood upright on this surface at intervals of 711 I11.
母材はＪＩＳ Ａ １０５０合金を用いた。また塩水噴
霧条件はＪＩＳ Ｚ ２３７＋に準じて行なった。JIS A 1050 alloy was used as the base material. Further, the salt water spray conditions were conducted according to JIS Z 237+.
腐食試験の判定はカークーラーのコンデンサーのチュー
ブ側の腐食性を想定して母材の最大ピット深さ（ｍ＋ｍ
）を測定した。Judgment for the corrosion test is based on the maximum pit depth of the base material (m+m
) was measured.
上記の実験結果を考慮してこの発明の合金の各成分の限
定理由を以下に記述する。Considering the above experimental results, the reasons for limiting each component of the alloy of the present invention will be described below.
なお、この発明で述べられる垂下量及び最大ピット深さ
の好ましくない上限は経験上より垂下量約３７關、最大
ピット深さ０．２５＋ｎｍであることを併記する。It should be noted that, based on experience, the unfavorable upper limits of the amount of droop and the maximum pit depth described in this invention are approximately 37 nm of droop and 0.25+nm of maximum pit depth.
Ｍｎは耐熱性及び強度の向上に効果があるが、その含有
量が１ 、０９６未満だと所望の効果が得られない。ま
た２、０％を超えて含有させてもそれ以上の効果は認め
られず、巨大化合物を形成し、成形能を低下させるので
好ましくない。従ってＭｎの添加量は１．６〜２．０％
であることが好ましい。Mn is effective in improving heat resistance and strength, but if the content is less than 1,096, the desired effects cannot be obtained. Moreover, if it is contained in an amount exceeding 2.0%, no further effect will be observed, and a giant compound will be formed, resulting in a decrease in moldability, which is not preferable. Therefore, the amount of Mn added is 1.6 to 2.0%.
It is preferable that
Ｃｕは第４図に見られるように微量を含有させただけで
、ロウ継手を形成した相手方の材料の耐食性に著しい悪
影響を及はすため、その含有量は規制する必要があり、
その最大許容量は０．０２％である。ｏ、ｏｏｔ％未満
に規制してもそれ以上の効果は期待されない。なお組合
せた相手方の材料の腐食を防止する性質を防食性と称す
る。また第２図に見られるように垂下量で代表される耐
熱性の効果も発現する。従ってＣｕの添加量は０．００
１〜０．０２％が好ましい。As shown in Figure 4, even a trace amount of Cu has a significant negative effect on the corrosion resistance of the material with which the braze joint is formed, so its content must be regulated.
Its maximum allowable amount is 0.02%. Even if it is regulated to less than o, oot%, no further effect is expected. Note that the property of preventing corrosion of the mating material is referred to as anti-corrosion property. Furthermore, as shown in FIG. 2, the heat resistance effect represented by the amount of droop is also exhibited. Therefore, the amount of Cu added is 0.00
1 to 0.02% is preferred.
Ｆｅは耐熱性に悪影響を及ぼすため、その含有量を規制
する必要があり、その最大許容量は０．５％である。し
かしながら、その含有量を０．１％未満に規制しても、
それ以上の効果は期待できない。Since Fe has an adverse effect on heat resistance, its content must be regulated, and its maximum allowable amount is 0.5%. However, even if the content is regulated to less than 0.1%,
No greater effect can be expected.
従ってＦＱの添加量はＦｃ０．１〜０ 、５２６である
ことが好ましい。Therefore, the amount of FQ added is preferably Fc 0.1-0.526.
Ｓｔは耐熱性の向上に効果があり、その含有量が０，１
５％未満ては所望の効果がなく、又、１．０％を超えて
含有させるとかえって耐熱性は低下する。St is effective in improving heat resistance, and its content is 0.1
If the content is less than 5%, the desired effect will not be obtained, and if the content exceeds 1.0%, the heat resistance will actually decrease.
従ってＳｔの含有量は０．１５〜１，０％であることが
好ましい。Therefore, the content of St is preferably 0.15 to 1.0%.
なお、この発明のプレージングシートの心材合金に対し
、皮材合金としては、ＡＡ ４００４（Ａｌ−１０％５
ｔ−１，５％Ｍｇ）合金、４１０４ （Ａｌｌ −１０
％Ｓ１１．５％Ｍｇ−０，１％Ｂ＋）合金、４００３
（Ａｌｌ−７％Ｓｊ２．５％Ｍｇ）合金等が使用できる
。In contrast to the core alloy of the plating sheet of this invention, the skin alloy is AA 4004 (Al-10%5
t-1,5%Mg) alloy, 4104 (All-10
%S11.5%Mg-0,1%B+) alloy, 4003
(All-7%Sj2.5%Mg) alloy, etc. can be used.
以下、この発明の実施例を示して効果を明確にする。Hereinafter, examples of the present invention will be shown to clarify the effects.
（ニ）実施例 第１表に本実施例で使用した合金の化学成分を示す。(d) Examples Table 1 shows the chemical composition of the alloy used in this example.
ルＤ
表
上記各合金をそれぞれ鋳造後、面側してプレジングシー
ト用心材とした。皮材には１−１０％−５ｔ−１，５％
Ｍｇ （ＡＡ ４００４）合金を使用し、クラツド率が
両面でそれぞれ１５％になるように熱間圧延を行ない、
板厚が０．［ｉｍＩｍ及び０．１Ｇｍｍのプレージング
シートを得た。これら試験片を用いて既述せる塩水噴霧
試験及び垂下試験の方法に準じて試験を行ない、その結
果を総括して第２表に示した。Table D Table Each of the above alloys was cast and then face-sided to form a core material for a plating sheet. 1-10%-5t-1,5% for leather material
Using Mg (AA 4004) alloy, hot rolling was carried out so that the cladding ratio was 15% on both sides,
Plate thickness is 0. [A plating sheet of imIm and 0.1 Gmm was obtained. Using these test pieces, tests were conducted according to the methods of the salt spray test and droop test described above, and the results are summarized in Table 2.
第 ２ 表
性試験法の説明図、第４図はＣｕの添加量と塩水噴霧試
験後の母材側の最大ピット深さとの関係を示す図表、第
５図は塩水噴霧試験に供した供試体の形態を示す説明図
である。2. Explanatory diagram of the surface properties test method. Figure 4 is a diagram showing the relationship between the amount of Cu added and the maximum pit depth on the base material side after the salt spray test. Figure 5 is the specimen subjected to the salt spray test. It is an explanatory view showing the form of.
注：平均ピット深さは深い方から１０個の平均値。Note: Average pit depth is the average value of the 10 deepest pits.
（ホ）発明の効果
上表の試験結果が示すように塩水噴霧試験結果より本発
明の合金は満足する耐食性を示し、コンデンサーのチュ
ーブ側の孔食防止に非常に有効であると共にそれ自身き
わめて顕著な耐熱性を有していることが判る。(e) Effects of the Invention As shown in the test results in the table above, the alloy of the present invention exhibits satisfactory corrosion resistance according to the salt spray test results, and is very effective in preventing pitting corrosion on the tube side of condensers, and is itself extremely remarkable. It can be seen that it has excellent heat resistance.
Claims (1)
％を含有し、残余Ａｌと不可避的不純物からなる防食性
及び耐熱性に優れた真空ブレージングシートコルゲート
フィン心材用アルミニウム合金。 ２、Ｍｎ１．６〜２．０％、Ｃｕ０．００１〜０．０２
％、Ｆｅ０．１〜０．５％、Ｓｉ０．１５〜１．０％を
含有し、残余Ａｌと不可避的不純物からなる防食性及び
耐熱性に優れた真空ブレージングシートコルゲートフィ
ン心材用アルミニウム合金。[Claims] 1. Mn 1.6-2.0%, Cu 0.001-0.02
%, residual Al and unavoidable impurities, and has excellent corrosion resistance and heat resistance for vacuum brazing sheet corrugate fin core material. 2, Mn1.6-2.0%, Cu0.001-0.02
%, Fe 0.1-0.5%, Si 0.15-1.0%, residual Al and inevitable impurities, and has excellent corrosion resistance and heat resistance for vacuum brazing sheet corrugate fin core material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27813989A JPH02243734A (en) | 1989-10-25 | 1989-10-25 | Aluminum alloy for vacuum brazing sheet corrugated fin core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27813989A JPH02243734A (en) | 1989-10-25 | 1989-10-25 | Aluminum alloy for vacuum brazing sheet corrugated fin core material |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11712480A Division JPS5741344A (en) | 1980-08-27 | 1980-08-27 | Aluminum alloy for core material of vacuum brazing sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02243734A true JPH02243734A (en) | 1990-09-27 |
| JPH0442463B2 JPH0442463B2 (en) | 1992-07-13 |
Family
ID=17593133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27813989A Granted JPH02243734A (en) | 1989-10-25 | 1989-10-25 | Aluminum alloy for vacuum brazing sheet corrugated fin core material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02243734A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753591A1 (en) * | 1995-07-10 | 1997-01-15 | Showa Aluminum Corporation | Brazeable aluminum alloy cast material and method of brazing the same |
| WO2009090186A1 (en) * | 2008-01-18 | 2009-07-23 | Hydro Aluminium Deutschland Gmbh | Composition having a corrosion protection layer and process for producing it |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517072A (en) * | 1978-07-24 | 1980-02-06 | Mitsubishi Keikinzoku Kogyo Kk | Heat exchanger cross fin material |
| JPS5568592A (en) * | 1978-11-17 | 1980-05-23 | Mitsubishi Keikinzoku Kogyo Kk | Manufacturing process for droop free fin material for heat exchanger |
| JPS5595094A (en) * | 1979-01-16 | 1980-07-18 | Sumitomo Light Metal Ind Ltd | Core of heat-exchanger made of aluminum alloy |
| JPS5644742A (en) * | 1979-09-19 | 1981-04-24 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad for heat exchanger |
-
1989
- 1989-10-25 JP JP27813989A patent/JPH02243734A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517072A (en) * | 1978-07-24 | 1980-02-06 | Mitsubishi Keikinzoku Kogyo Kk | Heat exchanger cross fin material |
| JPS5568592A (en) * | 1978-11-17 | 1980-05-23 | Mitsubishi Keikinzoku Kogyo Kk | Manufacturing process for droop free fin material for heat exchanger |
| JPS5595094A (en) * | 1979-01-16 | 1980-07-18 | Sumitomo Light Metal Ind Ltd | Core of heat-exchanger made of aluminum alloy |
| JPS5644742A (en) * | 1979-09-19 | 1981-04-24 | Sumitomo Light Metal Ind Ltd | Aluminum alloy clad for heat exchanger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0753591A1 (en) * | 1995-07-10 | 1997-01-15 | Showa Aluminum Corporation | Brazeable aluminum alloy cast material and method of brazing the same |
| US5862976A (en) * | 1995-07-10 | 1999-01-26 | Showa Aluminum Corporation | Brazeable aluminum alloy cast material and method of brazing the same |
| WO2009090186A1 (en) * | 2008-01-18 | 2009-07-23 | Hydro Aluminium Deutschland Gmbh | Composition having a corrosion protection layer and process for producing it |
| EP2090425A1 (en) * | 2008-01-18 | 2009-08-19 | Hydro Aluminium Deutschland GmbH | Composite material with a protective layer against corrosion and method for its manufacture |
| EP2692524A1 (en) * | 2008-01-18 | 2014-02-05 | Hydro Aluminium Deutschland GmbH | Composite material with a protective layer against corrosion and method for its manufacture |
| US9790599B2 (en) | 2008-01-18 | 2017-10-17 | Hydro Aluminum Deutschland GmbH | Composition having a corrosion protection layer and process for the production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442463B2 (en) | 1992-07-13 |
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