JPH0390273A - Low-temperature vapor brazing method for al or al alloy - Google Patents
Low-temperature vapor brazing method for al or al alloyInfo
- Publication number
- JPH0390273A JPH0390273A JP22117289A JP22117289A JPH0390273A JP H0390273 A JPH0390273 A JP H0390273A JP 22117289 A JP22117289 A JP 22117289A JP 22117289 A JP22117289 A JP 22117289A JP H0390273 A JPH0390273 A JP H0390273A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- alloy
- low
- atmosphere
- temperature
- 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 70
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 239000012298 atmosphere Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 239000012808 vapor phase Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 17
- 239000011592 zinc chloride Substances 0.000 abstract description 8
- 235000005074 zinc chloride Nutrition 0.000 abstract description 8
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011162 core material Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 239000003960 organic solvent Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 229910007570 Zn-Al Inorganic materials 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 208000014451 palmoplantar keratoderma and congenital alopecia 2 Diseases 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、Ａｌ又はＡｌ合金の低温ろう付方法に関する
ものであり、例えば自動車の熱交換器の製造において、
そのろう付された部材の性能を向上させるとともに製造
コストを安価にするものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a low-temperature brazing method for Al or Al alloy, and for example, in the manufacture of automobile heat exchangers,
The purpose is to improve the performance of the brazed member and to reduce manufacturing costs.
通常Ａ！’またはＡｌ合金のろう付は、接合しようとす
るＡｌまたはＡｌ合金部材を、該部材よりも融点の低い
ろう材を介して固定して組立物とし、このろう材の融点
よりも高く、接合しようとするＡｌまたはＡｌ合金部材
の融点よりも低い温度に加熱することにより行なってい
る。Normally A! 'Or Al alloy brazing involves fixing Al or Al alloy members to be joined via a brazing filler metal whose melting point is lower than that of the members, and using a brazing material whose melting point is higher than that of the brazing filler metal to be joined. This is done by heating to a temperature lower than the melting point of the Al or Al alloy member.
そして低温ろう信用のろう材としては一般にＺｎおよび
Ｚｎ−Ａｌ系合金、５ｎ−Ｐｂ系合金および５ｎ−Ｃｄ
系合金が使用されている。Generally, Zn and Zn-Al alloys, 5n-Pb alloys, and 5n-Cd are used as brazing materials for low-temperature brazing.
alloys are used.
なおＡｌ製熟熱交換器は耐食性の劣る５ｎ−ｐｂ系合金
および５ｎ−Ｃｄ系合金ろう材等は使用されていない。Note that the Al aging heat exchanger does not use 5n-pb alloy or 5n-Cd alloy brazing filler metal, which have poor corrosion resistance.
ＺｎおよびＺｎ−Ａｌ系合金をろう材として使用する従
来の低温ろう付性としては、種々の方法があるが、熱交
換器のような複雑な形状のものをろう付する場合には低
温炉中ろう付性。There are various methods for conventional low-temperature brazing using Zn and Zn-Al alloys as brazing materials. Brazeability.
低温反応ろう付性等が用いられている。低温炉中ろう付
は、ＡｌまたはＡｌ合金からなる部材を組立て、接合部
にＺｎ系ろう材を置き、ＺｎＣ１ｆ主戊分のフラックス
をアルコール等の有機溶媒に溶解して塗布する。そして
ろう材の溶融温度以上に加熱してろう付する。低温反応
ろう付はＡｌまたはＡｌ合金からなる部材を組立て、Ｚ
ｎＣｌ２主体のフラックスをアルコール等の有機溶媒に
溶解した槽中に浸漬し、そして炉中でＺｎＣｌ２の融点
以上に加熱してろう付する。この場合フラックスからＡ
ｌ材料表面に析出したＺｎがろう材となる。Low-temperature reaction brazing properties are used. In low-temperature furnace brazing, members made of Al or Al alloy are assembled, a Zn-based brazing material is placed at the joint, and a ZnC1f main flux is dissolved in an organic solvent such as alcohol and applied. Then, it is heated to a temperature higher than the melting temperature of the brazing material to perform brazing. Low-temperature reaction brazing involves assembling parts made of Al or Al alloy, and
A flux mainly consisting of nCl2 is immersed in a tank in which it is dissolved in an organic solvent such as alcohol, and then heated in a furnace to a temperature above the melting point of ZnCl2 for brazing. In this case, from the flux A
l Zn deposited on the material surface becomes a brazing filler metal.
従来の低温ろう付性では、必然的にフラックスを組立物
表面に付着させるための塗布工程が必要であり、さらに
塗布されたフラックスはその組立物を次工程へ運ぶ途中
で組立物から脱落するものが多く、このため有効に使用
されるフラックスの掛止りは低くなる。Conventional low-temperature brazing requires an application process to adhere flux to the surface of the assembly, and the applied flux often falls off the assembly while it is being transported to the next process. Therefore, the amount of flux that can be effectively used is low.
また塗布するフラックス溶液の濃度は５０〜７０％と濃
く、溶媒にはアルコール系の有機溶剤を使用するために
フラックスのコストが高い。またこのフラックスはＺｎ
Ｃｌ２主体であるので腐食性があり、ろう付換にはフラ
ックスを十分除去する必要がある。Further, the concentration of the applied flux solution is as high as 50 to 70%, and since an alcohol-based organic solvent is used as the solvent, the cost of the flux is high. Also, this flux is Zn
Since it is mainly composed of Cl2, it is corrosive, and it is necessary to remove the flux sufficiently before re-brazing.
またろう付された熱交換器の表面にはフラックスからＺ
ｎを析出するが、この濃度が高いために表面が汚く商品
価値が劣る。更に腐食試験を行うと、管材の貫通孔食は
防止するが１例えばフィンと管材との接合部が腐食され
易く、放熱の働きをするフィンが剥がれ熱交換器として
の機能が損なわれる。Also, the surface of the brazed heat exchanger has Z
However, due to its high concentration, the surface is dirty and its commercial value is poor. Further corrosion tests show that although through-pitting corrosion of the tube material is prevented, for example, the joints between the fins and the tube material are susceptible to corrosion, and the fins that function as heat radiators come off, impairing their function as a heat exchanger.
このように従来の低温ろう付性では濃いＺｎＣｌ２主体
のフラックス溶液を塗布することに起因して、ろう付コ
ストや性能の面でＡｌ−３ｉ系ろう材を使用する他のろ
う付性より劣り、そのために熱交換器のろう付性として
は余り使用されていない。In this way, conventional low-temperature brazing properties are inferior to other brazing properties using Al-3i brazing materials in terms of brazing cost and performance due to the application of a concentrated ZnCl2-based flux solution. For this reason, it is not often used for brazing properties of heat exchangers.
本発明は、これに鑑み種々検討の結果、接合しようとす
る組立物に直接フラックスを塗布する工程を必要とせず
、且つ低温でろう付可能な気相ろう付性を開発したもの
で、Ａｌ又はＡｌ合金をＺｎ系ろう材を介してろう付す
る方法において、Ａｌ又は１合金部材をＺｎＣ１：＋と
Ａｌとの反応溶融物から出る蒸気が存在する非酸化性雰
囲気中でろう付することを特徴とするものである。In view of this, as a result of various studies, the present invention has developed vapor phase brazing properties that do not require the process of directly applying flux to the assemblies to be joined and can be brazed at low temperatures. A method of brazing Al alloys through a Zn-based brazing material, characterized by brazing Al or 1 alloy members in a non-oxidizing atmosphere in the presence of steam from a reaction melt of ZnC1:+ and Al. That is.
ＺｎＣ１，とＡｌとの反応溶融物からでる蒸気が存在す
る非酸化性雰囲気中に、接合しようとする部材としての
組立物をおくことにより、この蒸気は極微量かつ均一に
組立物に付着してその表面のＡｌの酸化皮膜を破壊する
のでろうの濡れを促進し、ろうが−様に流れ、組立物の
接合箇所に均一なフィレットが形成される特徴を有する
。By placing the assembly as the members to be joined in a non-oxidizing atmosphere in which steam from the reaction melt of ZnC1 and Al exists, this vapor will adhere to the assembly uniformly in a very small amount. Since it destroys the Al oxide film on the surface, it promotes wetting of the solder, and has the characteristic that the solder flows in a uniform manner and forms a uniform fillet at the joints of the assembly.
そしてこの蒸気を発生させるにはＺｎＣｌ２とＡｌ粒粉
末を均一に混合し、あるいはＡｌ製のトレー上にＺｎＣ
ｌ２を置き、ろう付を実施する炉中に予め入れておき、
炉を昇温したときにその熱で同時に蒸発させても良いし
、またこの蒸気を炉外で発生させて窒素ガス等をキャリ
アーとして炉内に供給する等の方法も可能である。さら
に非酸化性雰囲気中にこの蒸気を存在させることにより
、組立物は完全に蒸気で覆うことができるので、蒸気密
度は少なくてすみフラックス消費量を低減することがで
きる。なお非酸化性雰囲気としては例えば窒素、アルゴ
ン、−酸化炭素その他いずれの雰囲気でも利用可能であ
る。To generate this steam, ZnCl2 and Al grain powder are uniformly mixed, or ZnC is placed on an Al tray.
Place l2 and place it in advance in the furnace where brazing is to be carried out,
When the temperature of the furnace is raised, the vapor may be simultaneously evaporated using the heat, or it is also possible to generate this steam outside the furnace and supply it into the furnace using nitrogen gas or the like as a carrier. Furthermore, by having this vapor in a non-oxidizing atmosphere, the assembly can be completely covered with vapor, so less vapor density is required and flux consumption is reduced. Note that as the non-oxidizing atmosphere, for example, nitrogen, argon, carbon oxide, or any other atmosphere can be used.
また本発明を実施するには密閉度の高い炉の使用が好ま
しいが、密閉度の劣る炉であっても接合しようとする組
立物をステンレス等からなる容器内に、ＺｎＣｌ２とＡ
ｌ粒粉末混合物と共に入れ、あるいはＡｌ製の容器内に
ＺｎＣｌ２と共に入れてろう付加熱すれば容易にろう付
することができる。この場合はＺｎＣｌ２とＡｌとの反
応溶融物から出る蒸気が容器内に閉じ込められるので、
その消費量は極微量であり、そのために−度ろう付に使
用した容器を用いて何回でもろう付が可能である。Further, in order to carry out the present invention, it is preferable to use a highly airtight furnace, but even if a furnace with a poor airtightness is used, the assembly to be joined is placed in a container made of stainless steel or the like, and ZnCl2 and A
It can be easily brazed by placing it together with a L-grain powder mixture or by placing it together with ZnCl2 in an Al container and heating it for brazing. In this case, the vapor emitted from the reaction melt of ZnCl2 and Al is trapped in the container, so
Its consumption is extremely small, and therefore it is possible to braze any number of times using the same container used for brazing.
なおＺｎ系ろう材としては、純Ｚｎ、Ｚｎ−Ａｌ系、Ｚ
ｎ−Ａｌ−３ｉ系およびこれらのＺｎ系ろう材にＢｉ、
Ｓｎ、Ｃｄ、Ｐｂ、Ｂｅ。Note that Zn-based brazing filler metals include pure Zn, Zn-Al-based, and Zn-based brazing filler metals.
Bi, n-Al-3i type and these Zn type brazing filler metals
Sn, Cd, Pb, Be.
Ｍｇ等を添加したろう材、その他如何なるＺｎ系ろう材
をも用いることが出来る。これらろう材は板状、棒状、
粉末状あるいはＡｌまたはＡｌ合金にこれらろう材を被
覆して用いることが出来る。被覆法としては熱間圧着法
、溶射法。A brazing filler metal added with Mg or the like or any other Zn-based brazing filler metal can be used. These brazing materials are plate-shaped, rod-shaped,
These brazing materials can be used in powder form or by coating Al or Al alloy. Coating methods include hot press bonding and thermal spraying.
溶融めっき等の如何なる方法によっても良い。Any method such as hot-dip plating may be used.
またろう付温度はＡ／−３ｉ系のろう材を用いる場合に
は少なくとも５９０℃以上に加熱する必要があるが、本
発明法では例えばＺｎ−５％Ａｌろう材では融点が３８
１℃であり、ろう付温度としては４００℃で十分である
。In addition, the brazing temperature needs to be heated to at least 590°C or higher when using an A/-3i type brazing material, but in the method of the present invention, for example, a Zn-5% Al brazing material has a melting point of 38°C.
1°C, and 400°C is sufficient as the brazing temperature.
また本発明法に使用できるＡｌ又はＡｌ合金とは、ろう
材の溶融温度より高い融点を有する全ての合金を言う。Further, Al or Al alloy that can be used in the method of the present invention refers to all alloys having a melting point higher than the melting temperature of the brazing material.
次に本発明を実施例について説明する。 Next, the present invention will be explained with reference to examples.
実施例１
第１図に示す逆Ｔ継手試験片を組立て本発明法によりろ
う付接合した。即ちＪＩＳＡ３００３ ＣＡｌ−Ｃｕ
０．０５〜０．２０％−Ｍｎ １．０−１．５％）合金
を芯材とし、この両面にＺｎ−５％Ａｌ合金ろう材を１
０％の割合でクラッドしたプレージングシート（１）か
らなる厚さｉｎｎの圧延板と、ＪＩＳＡｌ０５０ Ｉｔ
ｓ＾３００３１１！ｉ Ａ６９５１およびｌ’−０，５
％Ｃｕ合金の厚さ１ｍ１Ｍの圧延板（２）とを組立て有
機溶剤により脱脂した。Example 1 The inverted T-joint test piece shown in FIG. 1 was assembled and brazed together by the method of the present invention. That is, JISA3003 CAl-Cu
0.05-0.20%-Mn 1.0-1.5%) alloy as the core material, and one layer of Zn-5%Al alloy brazing material on both sides.
A rolled plate with a thickness of inn consisting of a plating sheet (1) clad in a proportion of 0%, and a JISA Al050 It
s^300311! i A6951 and l'-0,5
% Cu alloy with a thickness of 1 m and 1 M was assembled and degreased with an organic solvent.
そしてろう付炉の内容積ＩＴＩｔ当たり２００ｇのＺｎ
Ｃ１，と２００ｇのＡｌ粉末との混合物を載置したステ
ンレス製のトレー上に組立物を置き、露点−４０℃、酸
素濃度１１００ｐｐの窒素ガス雰囲気で置換され、４０
０℃に保持された電気炉内にこの組立物を挿入し、組立
物を４００℃で５分間加熱してろう付を実施した。And 200g of Zn per internal volume ITIt of the brazing furnace.
The assembly was placed on a stainless steel tray on which a mixture of C1 and 200 g of Al powder was placed, and the atmosphere was replaced by a nitrogen gas atmosphere with a dew point of -40 °C and an oxygen concentration of 1100 pp.
This assembly was inserted into an electric furnace maintained at 0° C., and the assembly was heated at 400° C. for 5 minutes to perform brazing.
上記ろう付換の接合物を炉外に取り出しろう付状況を調
べ、ろう付状況が良好な物をＯ７不良なものを×として
これらの結果を第１表に示した。また表面状態を観察し
きれないものを○。The above-mentioned re-brazed joints were taken out of the furnace and their brazing conditions were examined, and the results are shown in Table 1, with those with good brazing conditions marked as x and those with poor O7. In addition, mark ○ if the surface condition cannot be observed.
凹凸があり黒ずんで汚いものを×として第１表に併記し
た。Items that are uneven, dark, and dirty are marked with an x and are also listed in Table 1.
また従来法として、上記脱脂後の組立物を低温炉中ろう
付性により接合した。即ち、組立物をＺｎＣ１２主体の
フラックスの６６％プロピルアルコール溶液中に浸漬し
、そして４００℃に保持された電気炉内にこの組立物を
挿入し、組立物を４００℃で５分間加熱してろう付を実
施した。Further, as a conventional method, the above degreased assembly was joined by brazing in a low temperature furnace. That is, the assembly was immersed in a 66% propyl alcohol solution of ZnC12-based flux, inserted into an electric furnace maintained at 400°C, and heated at 400°C for 5 minutes. We carried out the following.
この結果をまとめて第１表に示した。The results are summarized in Table 1.
第１表
第１表より明らかなように、本発明例Ｎｏ、 １〜Ｎｏ
４では何れもろう付性は良好であり、表面状態もきれ
いであった。これに対し従来例Ｎ０９５〜Ｎｏ、８では
Ｚｎが接合物表面に多量に拡散するために表面が汚かっ
た。As is clear from Table 1, invention examples No. 1 to No.
No. 4 had good brazing properties and a clean surface condition. On the other hand, in conventional examples No. 095 to No. 8, the surface was dirty because a large amount of Zn diffused onto the surface of the bonded product.
実施例２
第２図に示すように、常法により管状に熱間押出し成形
したＩｔｓ＾１０５０ （ＡＡ’ −９９，５％以上）
製の管材（３）を蛇行状に曲げ、この蛇行状管材（３）
の間にｌｌ５Ａ３００３合金を芯材とし、その両面にＺ
ｎ−５％Ａｌ合金ろう材を１０％の割合でクラッドした
厚さ０．１６１ｍのプレージングシートからなるコルゲ
ートフィン（４）を挟み、さらにＡｌ−４，３％Ｚｎ−
１，３％Ｍｇ合金からなるコネクター（５）をＡｌ０７
０の溶接棒を用いてＴＩＧ溶接し、サーペンタインタイ
プのコンデンサーを組立て、有機溶剤で脱脂した。Example 2 As shown in Fig. 2, Its^1050 (AA' -99.5% or more) was hot extruded into a tubular shape by a conventional method.
The serpentine pipe material (3) is bent into a serpentine shape.
In between, ll5A3003 alloy is used as the core material, and Z
A corrugated fin (4) made of a plating sheet with a thickness of 0.161 m clad with n-5% Al alloy brazing filler metal at a ratio of 10% is sandwiched, and further Al-4, 3% Zn-
Connector (5) made of 1.3% Mg alloy with Al07
A serpentine type capacitor was assembled by TIG welding using a No. 0 welding rod, and degreased with an organic solvent.
そしてろう付炉の内容積１−当たり３００ ＨのＺｎＣ
１２を載置したＡｌ製のトレー上に組立物を置き、露点
−４０℃、酸素濃度１１００ｐｐの窒素ガス雰囲気で置
換され、４００℃に保持された電気炉内にこの組立物を
挿入し、組立物を４００℃で５分間加熱してろう付を実
施し、炉外へ取り出して冷却後微量のＣＩを除去するた
めに８０℃で１分間湯洗し、乾燥した。and 300 H of ZnC per inner volume of the brazing furnace.
The assembly was placed on an Al tray on which No. 12 was placed, and the assembly was inserted into an electric furnace maintained at 400°C and replaced with a nitrogen gas atmosphere with a dew point of -40°C and an oxygen concentration of 1100pp. The material was heated at 400° C. for 5 minutes to perform brazing, taken out from the furnace, cooled, and then washed with hot water at 80° C. for 1 minute to remove a trace amount of CI, and then dried.
上記コンデンサーについて表面の外観、ろう付状況を調
べて実施例１と同様に評価した。これらの結果を第２表
に示した。その後コンデンサーの耐食性を評価するため
にｌｌ５Ｈ８６８１に基づ（ＣＡＳＳ試験を５００時間
実施して、管材（３）とフィン（４）との接合状況が良
好なものを○、剥がれたものを×として評価し第２表に
併記した。The surface appearance and brazing condition of the above capacitor were examined and evaluated in the same manner as in Example 1. These results are shown in Table 2. After that, in order to evaluate the corrosion resistance of the capacitor, a CASS test was conducted for 500 hours based on 115H8681, and a good joint between the pipe material (3) and the fin (4) was evaluated as ○, and a case where the fins were peeled off was evaluated as ×. It is also listed in Table 2.
従来例として比較のため上記第２図に示すコンデンサー
の組立物を従来法でろう付したものについて、その特性
を調査した。As a conventional example, for comparison, the characteristics of the capacitor assembly shown in FIG. 2, which was brazed using a conventional method, were investigated.
即ち、第２図に示すコンデンサーを有機溶剤により脱脂
した後、ＺｎＣｆ：ｚ主体のフラックスの６６％プロピ
ルアルコール溶液中に浸漬し、そして４００℃に保持さ
れた電気炉内にこの組立物を挿入し、組立物を４（１０
℃で５分間加熱してろう付を実施し、炉外へ取り出して
冷却後多量に付着しているＣＩを除去するために８０℃
で１０分間湯洗し乾燥した。このコンデンサーについて
上記と同様な評価試験を行ってそれらの結果について第
２表に示した。That is, after degreasing the capacitor shown in Fig. 2 with an organic solvent, it was immersed in a 66% propyl alcohol solution of ZnCf:z-based flux, and the assembly was inserted into an electric furnace maintained at 400°C. , the assembly is 4 (10
℃ for 5 minutes to perform brazing, take it out of the furnace, cool it, and then heat it to 80℃ to remove a large amount of attached CI.
Washed with hot water for 10 minutes and dried. Evaluation tests similar to those described above were conducted on this capacitor, and the results are shown in Table 2.
第
表
第２表より明らかなように、本発明によるろう付後のコ
ンデンサーの表面はきれいであり、ろう付状況も良好で
あった。更にチューブとフィンとの接合部の剥がれもな
く、耐食性は良好であった。As is clear from Table 2, the surface of the capacitor after brazing according to the present invention was clean, and the brazing condition was also good. Furthermore, there was no peeling at the joint between the tube and the fin, and the corrosion resistance was good.
これに対し従来法によるコンデンサーはろう付性は良好
であったが、表面に凹凸がありしかも黒ずんで汚かった
。更にチューブとフィンとの接合部は腐食により全て剥
がれてしまい耐食性は劣っていた。On the other hand, the conventional capacitor had good brazing properties, but the surface was uneven and dark and dirty. Furthermore, the joints between the tubes and fins were completely peeled off due to corrosion, resulting in poor corrosion resistance.
［発明の効果］
このように本発明によれば、従来の低温ろう付性に比べ
て例えば自動車等の熱交換器の製造工程が短縮でき、フ
ラックスの消費量も少なくなるので製造コストが安価に
なる。またろう付後の表面がきれいであるため商品価値
が高く、耐食性が優れるために熱交換性能の寿命も長く
なる等の品質が向上し、工業上顕著な効果を奏するもの
である。[Effects of the Invention] As described above, the present invention can shorten the manufacturing process of heat exchangers for automobiles, for example, compared to conventional low-temperature brazing, and reduce the amount of flux consumed, resulting in lower manufacturing costs. Become. In addition, since the surface after brazing is clean, it has a high commercial value, and because of its excellent corrosion resistance, the quality of heat exchange performance is increased, such as a longer life, and it has a remarkable effect in industry.
第１図は逆Ｔ継手試験片を示す断面図、第２図はサーペ
ンタインタイプのコンデンサーの一例を示す斜視図であ
る。
１・・・プレージングシート
２・・・圧延板
３・・・管材
４・・・フィン
５・・・コネクター
第１図FIG. 1 is a sectional view showing an inverted T-joint test piece, and FIG. 2 is a perspective view showing an example of a serpentine type capacitor. 1... Placing sheet 2... Rolled plate 3... Tube material 4... Fin 5... Connector Fig. 1
Claims (1)
する方法において、Ａｌ又はＡｌ合金部材をＺｎＣｌ＿
２とＡｌとの反応溶融物から出る蒸気が存在する非酸化
性雰囲気中でろう付することを特徴とするＡｌ又はＡｌ
合金の低温気相ろう付方法。(1) In a method of brazing Al or Al alloy through a Zn-based brazing material, the Al or Al alloy member is
Al or Al characterized in that brazing is carried out in a non-oxidizing atmosphere in the presence of vapor from the reaction melt of Al and Al.
Low-temperature vapor phase brazing method for alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22117289A JP2662045B2 (en) | 1989-08-28 | 1989-08-28 | Low temperature vapor phase brazing of Al or Al alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22117289A JP2662045B2 (en) | 1989-08-28 | 1989-08-28 | Low temperature vapor phase brazing of Al or Al alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0390273A true JPH0390273A (en) | 1991-04-16 |
| JP2662045B2 JP2662045B2 (en) | 1997-10-08 |
Family
ID=16762606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22117289A Expired - Fee Related JP2662045B2 (en) | 1989-08-28 | 1989-08-28 | Low temperature vapor phase brazing of Al or Al alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2662045B2 (en) |
-
1989
- 1989-08-28 JP JP22117289A patent/JP2662045B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2662045B2 (en) | 1997-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100756752B1 (en) | Brazing sheet product and method of manufacturing an assembly using the brazing sheet product | |
| KR0139548B1 (en) | Method pof manufacturing heat exchanger | |
| MXPA05001025A (en) | Brazing product and method of its manufacture. | |
| EP0399050A1 (en) | GASEOUS PHASE BRAZING METHOD OF Al OR Al ALLOY | |
| JPH0390273A (en) | Low-temperature vapor brazing method for al or al alloy | |
| KR20010062366A (en) | Flux for cab brazing aluminum heat exchangers | |
| JP2662034B2 (en) | Low temperature vapor phase brazing of Al or Al alloy | |
| JP2644324B2 (en) | Gas phase brazing of Al or Al alloy | |
| JPS6018294A (en) | Aluminum-brazed joint | |
| JPH02284766A (en) | Vapor phase soldering method of al or al alloy | |
| JP2685859B2 (en) | Brazing method of Al or Al alloy | |
| JPH0318496A (en) | Vapor brazing method of al or al alloy | |
| JPH0390274A (en) | Vapor brazing method for al or al alloy | |
| JPH02307695A (en) | Vapor phase brazing method for al or al alloy | |
| JPH03114666A (en) | Vapor brazing method for al or al alloy | |
| JPH0335874A (en) | Vapor phase brazing method for al or al alloy | |
| JPH0399795A (en) | Flux for vapor phase brazing of aluminum or aluminum alloy | |
| JP2662048B2 (en) | Vapor phase brazing of Mg-containing Al alloy | |
| JPH02307696A (en) | Vapor phase brazing method for al or al alloy | |
| JPH03114663A (en) | Heat exchanger made of al alloy | |
| JP2662047B2 (en) | Gas phase brazing of Al or Al alloy | |
| JPS58173079A (en) | Production of heat exchanger made of aluminum | |
| JPH02258162A (en) | Vapor brazing method for al or al alloy | |
| JPH02258164A (en) | Vapor brazing method of al or al alloy | |
| JPH03146294A (en) | Vapor brazing method for al or al alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |