JPH0240420B2 - ARUMINIUMUZAINOHYOMENNITAKOSHITSUSOOKEISEISURUHOHO - Google Patents
ARUMINIUMUZAINOHYOMENNITAKOSHITSUSOOKEISEISURUHOHOInfo
- Publication number
- JPH0240420B2 JPH0240420B2 JP23313482A JP23313482A JPH0240420B2 JP H0240420 B2 JPH0240420 B2 JP H0240420B2 JP 23313482 A JP23313482 A JP 23313482A JP 23313482 A JP23313482 A JP 23313482A JP H0240420 B2 JPH0240420 B2 JP H0240420B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- powder
- mixture
- copper
- aluminum 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.)
- Expired - Lifetime
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 44
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 22
- 238000005219 brazing Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 8
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 claims description 6
- 230000005496 eutectics Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims 1
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 10
- 239000002245 particle Substances 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- IRHTZOCLLONTOC-UHFFFAOYSA-N hexacosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCO IRHTZOCLLONTOC-UHFFFAOYSA-N 0.000 description 2
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 1
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910018566 Al—Si—Mg Inorganic materials 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229960000541 cetyl alcohol Drugs 0.000 description 1
- ALSTYHKOOCGGFT-UHFFFAOYSA-N cis-oleyl alcohol Natural products CCCCCCCCC=CCCCCCCCCO ALSTYHKOOCGGFT-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
- F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
- F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【発明の詳細な説明】
この発明は、例えばヒートパイプ、エバポレー
ター等の熱交換器における熱交換伝熱面を構成す
るアルミニウム材の表面に、熱伝達性能を向上さ
せる多孔質沸騰伝熱面を形成する目的で、アルミ
ニウム粉末のろう付けによる多孔質層を形成する
方法に関する。Detailed Description of the Invention This invention forms a porous boiling heat transfer surface that improves heat transfer performance on the surface of an aluminum material that constitutes a heat exchange heat transfer surface in a heat exchanger such as a heat pipe or evaporator. The present invention relates to a method for forming a porous layer by brazing aluminum powder.
なお、この明細書において、アルミニウムの語
は、その合金を含む意味において用いる。 In this specification, the term aluminum is used to include its alloys.
従来、この種の多孔質層の形成方法として、ア
ルミニウム粉末を、Al−Si系合金ろう材を用い
てアルミニウム材の表面にろう付けする方法が知
られている。既知のこの方法は、例えば特開昭57
−88967号公報に示されるように、アルミニウム
粉末と上記ろう材とを結合剤と共に混合して適当
な粘度を有するスラリー状に調製し、これをアル
ミニウム材表面に塗布した後、真空炉中等で加熱
してろう付け接合するものであるが、ろう材中に
含まれるゲツター材として必須マグネシウムの存
在のために、真空炉内が汚染される欠点があつ
た。 Conventionally, as a method for forming this type of porous layer, a method is known in which aluminum powder is brazed to the surface of an aluminum material using an Al-Si alloy brazing material. This known method is described, for example, in JP-A-57
As shown in Publication No. 88967, aluminum powder and the above-mentioned brazing filler metal are mixed together with a binder to prepare a slurry having an appropriate viscosity, which is applied to the surface of the aluminum material and then heated in a vacuum furnace or the like. However, due to the presence of essential magnesium as a getter material contained in the brazing filler metal, the inside of the vacuum furnace was contaminated.
この発明は、このような欠点を排除することを
目的としてなされたものであり、アルミニウムと
銅の共晶接合によつてアルミニウム粉末のろう付
けを行うことを主旨とするものである。 The present invention was made with the aim of eliminating such drawbacks, and its main purpose is to braze aluminum powder by eutectic bonding of aluminum and copper.
即ち、この発明は、アルミニウム材の表面に、
アルミニウム粉末と、銅粉末およびアルミニウム
と銅の合金粉末の少なくともいずれか１種の粉末
との混合物を均一に層状に付着せしめ、然る後真
空、非酸化性雰囲気または還元性雰囲気中でアル
ミニウムとの銅の共晶温度以上に加熱してろう付
けすることを特徴とするアルミニウム材の表面に
多孔質層を形成する方法を要旨とする。 That is, in this invention, on the surface of an aluminum material,
A mixture of aluminum powder and at least one of copper powder and aluminum-copper alloy powder is deposited in a uniform layer, and then mixed with aluminum in a vacuum, non-oxidizing atmosphere or reducing atmosphere. The gist of this invention is a method for forming a porous layer on the surface of an aluminum material, which is characterized by brazing by heating above the eutectic temperature of copper.
この発明において調製される粉末混合物は、上
記のようにアルミニウム粉末と銅粉末との混合
物、アルミニウム粉末とアルミニウム−銅合金粉
末との混合物、及びアルミニウム粉末と銅粉末と
アルミニウム−銅合金粉末との混合物の３つの態
様があり、そのいずれであつてもよい。アルミニ
ウム粉末と銅粉末の混合物の場合、それらの混合
重量比は、８：１程度が好ましく、またアルミニ
ウム粉末と例えばアルミニウム−30％銅合金粉末
との混合物の場合には１：１程度が好ましいが、
もとよりこれに限られるものではない。 The powder mixtures prepared in this invention include, as described above, a mixture of aluminum powder and copper powder, a mixture of aluminum powder and aluminum-copper alloy powder, and a mixture of aluminum powder, copper powder, and aluminum-copper alloy powder. There are three aspects, and any one of them may be used. In the case of a mixture of aluminum powder and copper powder, the mixing weight ratio thereof is preferably about 8:1, and in the case of a mixture of aluminum powder and, for example, aluminum-30% copper alloy powder, it is preferably about 1:1. ,
Of course, it is not limited to this.
アルミニウム粉末、銅粉末及びアルミニウム−
銅合金粉末の粒径は、いずれも20〜500μｍ程度
のものを用いるべきである。アルミニウム粉末の
粒径が20μｍより小さい場合及び50μｍより大き
い場合には、良好な高性能伝熱面の形成が困難で
ある。最も好ましくは、20〜200μｍ程度のもの
を用いるのが良い。また銅粉末及びアルミニウム
−銅合金粉末の粒径は、20μｍより小さいものは
入手の困難性があり、500μｍより大きいと、均
一な分布を得ることができず良好な接合が困難で
ある。従つて、特に20〜100μｍ程度のものを用
いるのが好適である。 Aluminum powder, copper powder and aluminum
The particle size of the copper alloy powder should be approximately 20 to 500 μm. When the particle size of the aluminum powder is smaller than 20 μm or larger than 50 μm, it is difficult to form a good high-performance heat transfer surface. Most preferably, one having a diameter of about 20 to 200 μm is used. Further, it is difficult to obtain copper powder and aluminum-copper alloy powder with a particle size smaller than 20 μm, and if it is larger than 500 μm, it is difficult to obtain a uniform distribution and good bonding is difficult. Therefore, it is particularly preferable to use a material with a diameter of about 20 to 100 μm.
上記の混合物をアルミニウム材表面上に均一に
層状に付着せしめる手段は、前記従来法に倣つ
て、液状プラスチツク等の結合剤と共に粉末を混
練してスラリー状に形成し、これをアルミニウム
材上に塗布するものとしてもよいが、この場合に
は、粉末の沈降現象により結合剤と分離し易いこ
と、均一な塗布が難かしいこと、ろう付け加工時
に結合剤が分解飛散して炉内を汚染すること、パ
イプや中空材の内面へのろう付けが困難であるこ
と等の問題点があるため、次のような手段にて行
うのが有利である。即ち、多孔質層を形成すべき
アルミニウム材の表面に予め高級アルコールを塗
布し、然る後上記粉末の混合物をその上に撒布し
て高級アルコール層に付着保持せしめるものとす
るのが有利である。ここに高級アルコールとして
は、例えばヘキシアルコール、オクチルアルコー
ル、セチルアルコール、ステアリルアルコール、
セリルアルコール、デシルアルコール、ノニルア
ルコール、ラウリルアルコール、オレインアルコ
ールなどの任意のものを選んで使用しうる。また
その塗布法は、刷毛塗り、吹き付け、ロールコー
ター等の任意の手段を採用しうる。 The method for adhering the above mixture in a uniform layer on the surface of the aluminum material is to knead the powder with a binder such as liquid plastic to form a slurry, and apply this onto the aluminum material, following the conventional method. However, in this case, it is easy to separate from the binder due to the settling phenomenon of the powder, it is difficult to apply it uniformly, and the binder disintegrates and scatters during the brazing process, contaminating the inside of the furnace. Since there are problems such as difficulty in brazing to the inner surface of a pipe or hollow material, it is advantageous to use the following method. That is, it is advantageous to apply higher alcohol in advance to the surface of the aluminum material on which the porous layer is to be formed, and then sprinkle the above-mentioned powder mixture thereon so that it adheres and remains on the higher alcohol layer. . Examples of higher alcohols include hexyl alcohol, octyl alcohol, cetyl alcohol, stearyl alcohol,
Any alcohol such as ceryl alcohol, decyl alcohol, nonyl alcohol, lauryl alcohol, and oleic alcohol can be selected and used. Further, as the coating method, any method such as brushing, spraying, roll coater, etc. can be adopted.
この発明は、アルミニウムと銅との共晶接合に
よつてアルミニウム粉末のろう付けを行うもので
あるから、ろう付け時の加熱温度は、少なくとも
上記の共晶温度である548℃以上であることを要
し、好ましくは560〜610℃程度で行われる。ま
た、ろう付け操作は、真空、非酸化性雰囲気また
は還元性雰囲気中でフラツクスを使用せずに行わ
れるものである。 Since this invention brazes aluminum powder by eutectic bonding of aluminum and copper, the heating temperature during brazing must be at least 548°C, which is the eutectic temperature mentioned above. It is preferably carried out at about 560 to 610°C. Also, the brazing operation is performed in a vacuum, non-oxidizing atmosphere or reducing atmosphere without the use of flux.
この発明によれば上述のように、アルミニウム
粉末を、アルミニウム−銅共晶ろう材によつてア
ルミニウム材表面に接合するものであるから、該
アルミニウム材表面に均一な空隙をもつた多孔質
沸騰伝熱面として良好な性能を有する多孔質層を
形成しうるのはもとより、従来のAl−Si−Mg系
ろう材を用いて接合する場合のように、ゲツター
材としてのマグネシウム等の使用が不必要となる
ことにより、その飛散によつてろう付け炉内を汚
染する欠点がない。 According to this invention, as described above, the aluminum powder is bonded to the surface of the aluminum material using the aluminum-copper eutectic brazing filler metal, so that a porous boiling conductor with uniform voids is formed on the surface of the aluminum material. Not only is it possible to form a porous layer with good thermal properties, but it also eliminates the need to use magnesium as a getter material, unlike when bonding using conventional Al-Si-Mg brazing filler metals. Therefore, there is no disadvantage of contaminating the inside of the brazing furnace due to the scattering of the brazing furnace.
次に、この発明の実施例を示す。 Next, examples of this invention will be shown.
実施例 １
A1100P−H24からなる２mm×50mm×100mmのア
ルミニウム板をアセトン中で脱脂した後、その表
面にデシルアルコールを薄く均一に塗布した。一
方、平均粒径125μｍの純アルミニウム粉末と、
平均粒径50μｍの純銅粉末とを重量比８：１の割
合でかつ乾燥状態でよく混合し、この混合物を、
前述のデシルアルコール塗布面上に均一に振りか
け、然る後これを真空度１×10-4torr以下（加熱
開始時）加熱温度560℃、時間15分の条件で真空
ろう付けを行つた。Example 1 After degreasing a 2 mm x 50 mm x 100 mm aluminum plate made of A1100P-H24 in acetone, decyl alcohol was applied thinly and uniformly to its surface. On the other hand, pure aluminum powder with an average particle size of 125 μm,
Pure copper powder with an average particle size of 50 μm is thoroughly mixed in a dry state at a weight ratio of 8:1, and this mixture is
The decyl alcohol was sprinkled uniformly on the surface coated with decyl alcohol, and then vacuum brazing was performed at a vacuum degree of 1×10 −4 torr or less (at the start of heating) at a heating temperature of 560° C. for 15 minutes.
その結果、アルミニウム材表面にアルミニウム
粉末の接合に基づく均一な多孔質層を形成するこ
とができた。 As a result, it was possible to form a uniform porous layer on the surface of the aluminum material based on the bonding of the aluminum powder.
実施例 ２
実施例１と同様にデシルアルコールを塗布した
アルミニウム材の表面上に、平均粒径125μｍの
純アルミニウム粉末と、平均粒径50μｍのアルミ
ニウム−30％銅合金粉末とを重量比１：１の割合
で混合した乾燥状態の混合物を均一に振りかけ、
然る後、加熱温度を605℃とした他は実施例１と
同じ条件で真空ろう付けを行つた。Example 2 Pure aluminum powder with an average particle size of 125 μm and aluminum-30% copper alloy powder with an average particle size of 50 μm were placed on the surface of an aluminum material coated with decyl alcohol in the same manner as in Example 1 at a weight ratio of 1:1. Sprinkle the dry mixture evenly in the proportions of
Thereafter, vacuum brazing was performed under the same conditions as in Example 1 except that the heating temperature was 605°C.
その結果、アルミニウム材表面にアルミニウム
粉末のろう付けによる均一な多孔質層を形成する
ことができた。 As a result, a uniform porous layer could be formed on the surface of the aluminum material by brazing the aluminum powder.
Claims (1)
と、銅粉末およびアルミニウムと銅の合金粉末の
少なくともいずれか１種の粉末との混合物を均一
に層状に付着せしめ、然る後真空、非酸化性雰囲
気または還元性雰囲気中でアルミニウムと銅の共
晶温度以上に加熱してろう付けすることを特徴と
するアルミニウム材の表面に多孔質層を形成する
方法。 ２ アルミニウム材の表面に高級アルコールを塗
布し、その上に粉末混合物を撒布して上記高級ア
ルコールに保持せしめることにより、アルミニウ
ム材の表面に上記混合物を層状に付着せしめるこ
とを特徴とする特許請求の範囲第１項記載のアル
ミニウム材の表面に多孔質層を形成する方法。[Claims] 1. A mixture of aluminum powder and at least one of copper powder and aluminum-copper alloy powder is applied in a uniform layer on the surface of an aluminum material, and then vacuum, A method for forming a porous layer on the surface of an aluminum material, which comprises brazing by heating above the eutectic temperature of aluminum and copper in a non-oxidizing atmosphere or a reducing atmosphere. 2. A patent claim characterized in that a higher alcohol is applied to the surface of an aluminum material, a powder mixture is sprinkled thereon, and the mixture is retained in the higher alcohol, so that the mixture is adhered to the surface of the aluminum material in a layered manner. A method for forming a porous layer on the surface of an aluminum material according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23313482A JPH0240420B2 (en) | 1982-12-24 | 1982-12-24 | ARUMINIUMUZAINOHYOMENNITAKOSHITSUSOOKEISEISURUHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23313482A JPH0240420B2 (en) | 1982-12-24 | 1982-12-24 | ARUMINIUMUZAINOHYOMENNITAKOSHITSUSOOKEISEISURUHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59118268A JPS59118268A (en) | 1984-07-07 |
| JPH0240420B2 true JPH0240420B2 (en) | 1990-09-11 |
Family
ID=16950265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23313482A Expired - Lifetime JPH0240420B2 (en) | 1982-12-24 | 1982-12-24 | ARUMINIUMUZAINOHYOMENNITAKOSHITSUSOOKEISEISURUHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0240420B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021186491A1 (en) * | 2020-03-16 | 2021-09-23 | 三菱電機株式会社 | Heat exchanger, air conditioner, and method for manufacturing heat exchanger |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2792903B2 (en) * | 1989-04-11 | 1998-09-03 | 大日本印刷株式会社 | Container |
| US7695808B2 (en) * | 2005-11-07 | 2010-04-13 | 3M Innovative Properties Company | Thermal transfer coating |
-
1982
- 1982-12-24 JP JP23313482A patent/JPH0240420B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021186491A1 (en) * | 2020-03-16 | 2021-09-23 | 三菱電機株式会社 | Heat exchanger, air conditioner, and method for manufacturing heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59118268A (en) | 1984-07-07 |
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