JPH02299775A - Manufacture of refrigerant tube for aluminum heat exchanger - Google Patents
Manufacture of refrigerant tube for aluminum heat exchangerInfo
- Publication number
- JPH02299775A JPH02299775A JP11729489A JP11729489A JPH02299775A JP H02299775 A JPH02299775 A JP H02299775A JP 11729489 A JP11729489 A JP 11729489A JP 11729489 A JP11729489 A JP 11729489A JP H02299775 A JPH02299775 A JP H02299775A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- brazing
- extruded
- filler metal
- brazing 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.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910052782 aluminium Inorganic materials 0.000 title claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 8
- 238000005219 brazing Methods 0.000 claims abstract description 59
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 4
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 2
- 229910018125 Al-Si Inorganic materials 0.000 claims 1
- 229910018520 Al—Si Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 abstract description 19
- 229910052751 metal Inorganic materials 0.000 abstract description 18
- 239000002184 metal Substances 0.000 abstract description 18
- 229910052725 zinc Inorganic materials 0.000 abstract description 18
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000000945 filler Substances 0.000 abstract description 12
- 238000007751 thermal spraying Methods 0.000 abstract description 10
- 238000000151 deposition Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910007981 Si-Mg Inorganic materials 0.000 description 1
- 229910008316 Si—Mg Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はろう付タイプのアルミニウム製熱交換器に適用
される冷媒通路管の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a refrigerant passage pipe applied to a brazed type aluminum heat exchanger.
従来ろう付タイプのアルミニウム製熱交換器に用いられ
る冷媒通路管としては■押出し管、■電縫管、■プレス
加エラミネート板を組合せるもの等がある。Refrigerant passage pipes conventionally used in brazing type aluminum heat exchangers include: (1) extruded pipes, (2) electric resistance welded pipes, and (2) combinations of pressed elastomer plates.
ところで上記のような従来の冷媒通路管のうち、押出し
管は、気密性、耐圧性に対する信頼性が高いものの、管
外表面にろう材層を形成させる事が難しい。そのため、
押出し管を用いて熱交換器を作る場合には、フィン材と
してろう材をクラッドしたプレージングシートを用いる
事が必要となり、フィンの薄肉化の限界、コスト、ろう
付中の変形などの不具合点が知られている。By the way, among the conventional refrigerant passage pipes as described above, extruded pipes have high reliability in terms of airtightness and pressure resistance, but it is difficult to form a brazing material layer on the outer surface of the pipe. Therefore,
When making a heat exchanger using extruded tubes, it is necessary to use a plating sheet clad with brazing material as the fin material, which causes problems such as limitations on thinning the fins, cost, and deformation during brazing. It has been known.
また、これに対し、電縫管及びラミネート板を組合せた
ものは、管外面がろう材になっているため、フィン材と
してプレージングシートを用いる必要はないものの、押
出し管の様な管内面への精密インナーフィン加工は難し
く、性能的には十分とは言えない不具合がある。On the other hand, in the case of a combination of an ERW pipe and a laminated plate, the outer surface of the tube is made of brazing material, so there is no need to use a plating sheet as a fin material, but the inner surface of the tube, such as an extruded tube, is not required. Precision inner fin machining is difficult, and there are some defects that make it less than satisfactory in terms of performance.
このため、押出し管表面に、ろう材を付ける事は従来よ
シ検討されており■溶射により直接ろう材層を形成する
方法、■ろう材シートを接着剤等によりはる方法等が示
されている。しかしながら、■の溶射による方法は歩留
りが悪くコスト的に難しい不具合があり、また■の方法
は、熱交換器組立て時のハンドリングがむづかしく接着
剤によるろう付性への悪影響及び炉の汚染の問題があり
、両者とも実用化はされていない。For this reason, attaching a brazing material to the surface of an extruded tube has been considered in the past, and methods have been proposed, including 1) forming a brazing material layer directly by thermal spraying, and 2) attaching a brazing material sheet using adhesive, etc. There is. However, method (2) using thermal spraying has the disadvantage of poor yield and is difficult in terms of cost, and method (2) is difficult to handle when assembling the heat exchanger, has an adverse effect on brazability due to adhesive, and is likely to contaminate the furnace. Both methods have problems and have not been put into practical use.
本発明は上記各不具合点を解決した新たなアルミニウム
製の熱交換器用冷媒管の製造方法を提供しようとするも
のである。The present invention aims to provide a new method for manufacturing a refrigerant tube for a heat exchanger made of aluminum, which solves the above-mentioned problems.
このため本発明のアルミニウム熱交換器用冷媒管の製造
方法は、押出加工により製造されたアルミニウム合金製
冷媒通路管の外表面にＡｎ −８ｉ合金あるいはＡｌｌ
−Ｓｉ −Ｍｇ合金製のシートあるいはワイヤーを密
着させ、これに亜鉛（Ｚｎ ）を溶射して前記冷媒通路
管の外表面にろう材層を形成させたことを特徴としてい
る。Therefore, in the method of manufacturing refrigerant pipes for aluminum heat exchangers of the present invention, the outer surface of the aluminum alloy refrigerant passage pipes manufactured by extrusion is coated with An-8i alloy or All
-Si-Mg alloy sheet or wire is closely attached and zinc (Zn) is sprayed onto this to form a brazing filler metal layer on the outer surface of the refrigerant passage pipe.
上述の本発明の冷媒管の製造方法では、ろう材の供給方
法としてＡｎ −Ｓｉ合金あるいはＡ１−８１−Ｍｇ合
金製のろう材シートあるいはろう材ワイヤーを用い押出
された冷媒通路管の表面に溶着させるろう材量をシート
厚さ及びワイヤ径をコントロールする事により、任意に
設定ができるとともに、溶着量のバラツキを押える事が
可能となる。次いでろう材シートあるいはろう材ワイヤ
を押出された冷媒通路管の外表面に密着させた状態で亜
鉛溶射を行なう事によシ、ろう材の歩留まシを向上する
事ができる。In the method for manufacturing a refrigerant pipe of the present invention described above, the brazing material is supplied by welding it to the surface of the extruded refrigerant passage pipe using a brazing material sheet or brazing material wire made of An-Si alloy or A1-81-Mg alloy. By controlling the sheet thickness and wire diameter, it is possible to arbitrarily set the amount of brazing material to be deposited, and it is also possible to suppress variations in the amount of welding. Next, the yield of the brazing material can be improved by thermally spraying the brazing material with the brazing material sheet or the brazing material wire in close contact with the outer surface of the extruded refrigerant passage pipe.
この際に溶射の熱によシろう材が溶融し、ろう材＋Ｚｎ
合金として冷媒通路管表面に溶着する。At this time, the brazing filler metal melts due to the heat of thermal spraying, and the brazing filler metal + Zn
Welded as an alloy to the surface of the refrigerant passage pipes.
ろう材の溶着手段として用いる亜鉛溶射は亜鉛が、ろう
付工程中に拡散し、亜鉛拡散層を形成するため、押出さ
れた冷媒管の耐食性向上効果もある。また、溶着したろ
う材は冶金的に押出し管と接合しているため、押出し管
を曲げたりする事が可能であシ、ノ・ンドリングに対す
る不具合もない。Zinc thermal spraying, which is used as a brazing material welding means, diffuses zinc during the brazing process and forms a zinc diffusion layer, which also has the effect of improving the corrosion resistance of extruded refrigerant pipes. Furthermore, since the welded brazing filler metal is metallurgically joined to the extruded tube, it is possible to bend the extruded tube, and there is no problem with no-undling.
以下図面によシ本発明の１実施例について説明すると、
第１図は本発明方法の基本原理を示す説明図、第２図は
押出機直結型の本発明実施例装置の側断面図である。One embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory diagram showing the basic principle of the method of the present invention, and FIG. 2 is a side sectional view of an apparatus of the present invention which is directly connected to an extruder.
第１図に於て１は押出された冷媒管でその外表面にＡｆ
ｌ −Ｓｉ合金製又はＡＸ−８ｉ−Ｍｇ合金製のシート
又はワイヤーよりなるろう材を密着し、溶射ガン４によ
り溶融亜鉛３をその外表面に溶射して、冷媒管１の外表
面に溶着ろう材層１を形成する本発明方法の基本原理を
示している。In Figure 1, 1 is an extruded refrigerant pipe with Af on its outer surface.
A brazing material made of a sheet or wire made of l-Si alloy or AX-8i-Mg alloy is closely attached, and molten zinc 3 is sprayed on the outer surface of the material using a thermal spray gun 4 to weld the soldering material to the outer surface of the refrigerant pipe 1. The basic principle of the method of the present invention for forming the material layer 1 is shown.
次ぎにその具体例装置を示す第２図に於て、ビレット６
は押出し機７内で押出され、押出し管９として図の左方
向に向けて移動する。８はろう材シートコイルで押出し
管（冷媒管）９の外表面にろう材＆−ト１０を密着しな
がら押出し管９は図の左方向に向けて一体となって移送
される。１１はろう材シート密着成形ロール、１２はろ
う材シート押え板である。１３は溶射ガンで、溶融亜鉛
１４を溶射し押出し管９の外表面に溶着ろう材層１５を
形成する。Next, in FIG. 2 showing a specific example of the device, billet 6
is extruded in the extruder 7 and moves toward the left in the figure as an extrusion tube 9. Reference numeral 8 denotes a brazing material sheet coil, and the extruded tube (refrigerant tube) 9 is conveyed as a unit toward the left in the figure while the brazing material &to 10 is brought into close contact with the outer surface of the extruded tube (refrigerant tube) 9. Reference numeral 11 denotes a brazing material sheet close-contact forming roll, and 12 a brazing material sheet pressing plate. A thermal spray gun 13 sprays molten zinc 14 to form a welding brazing material layer 15 on the outer surface of the extruded tube 9.
前述するような本発明の１実施例装置である押出機直結
ターイブの装置によりろう材溶着押出し管を試作したそ
の結果を示すと次のとおりである。The results of trial manufacturing of a brazing material welded extruded tube using the extruder-directly connected tube device, which is one embodiment of the present invention as described above, are as follows.
’４’ｌ Ａ１０５０：純Ａｎ（９９，５０チ以上）
Ａ３００３：ｉ−０，０５〜０１２０％Ｃｕ−１，０〜
１．５１Ｍｎ＊２ Ａ４０４５：Ａｌ！−９，０〜１１
．０チ５ｉＡ４００４ ： Ａｎ−９，０〜１０．５
％Ｓ ｉ−１，０〜２．０ｊＭｇ＊３ Ａ４０４５＝
ゾコロツクろう付（フラックス１０９／ｍ”。'4'l A1050: Pure An (99,50 chi or more)
A3003: i-0,05~0120% Cu-1,0~
1.51Mn*2 A4045: Al! -9,0~11
．． 0chi5iA4004: An-9,0~10.5
%S i-1,0~2.0jMg*3 A4045=
Zokorotsuk brazing (flux 109/m”).
６０５℃×５分）
Ａ４００４−・・真空ろう付（１０’Ｔｏｒｒ、６０５
℃×５分）上記試作結果表でわかる様に、ろう材シート
厚さ３０〜２００μｍ１亜鉛溶射の目付量５〜２０汐賃
の条件において良好な溶着ろう材層が得られた。605℃×5 minutes) A4004--Vacuum brazing (10'Torr, 605
As can be seen from the above table of trial production results, a good welded brazing material layer was obtained under the conditions of a brazing material sheet thickness of 30 to 200 .mu.m and a coating weight of 5 to 20 mm per zinc thermal spraying.
ろう付性についても、上記範囲内のものでは問題がない
事がわかる。It can be seen that there is no problem with brazing properties within the above range.
また、これらの押出し管（ろう材シートＡ４０４５ ５
０ μｍ 、亜鉛目付量１０９／ｙｒＩ）とＡｆｉ−１
１Ｍｎ−１，５％Ｚｎフィン材（ｔ：０．１１５ｍ５）
を用いノコロックろう付性により実際の熱交を試作し、
塩水噴霧試験を実施した。３０００ｈでの発生孔食深さ
は、最大でも２００μｍであり、従来の亜鉛メッキ押出
し管とＡ４０４５＋１％Ｚｎろう材を両面にクラッドし
たＡ３００３＋１％Ｚｎ フィン材を組合せたものと
比較し、同等の耐食性が得られた。In addition, these extruded tubes (brazing material sheet A4045 5
0 μm, zinc basis weight 109/yrI) and Afi-1
1Mn-1.5%Zn fin material (t: 0.115m5)
Prototype an actual heat exchanger using Nocolok brazing properties.
A salt spray test was conducted. The maximum pitting corrosion depth after 3000 hours is 200 μm, and compared to a combination of conventional galvanized extruded pipe and A3003 + 1% Zn fin material clad on both sides with A4045 + 1% Zn brazing filler metal, it has the same corrosion resistance. Obtained.
以上の事よシ、本発明によるろう材溶着押出し管が熱交
換器用冷媒通路管としての機能を十分にそなえている事
が確認できた。Based on the above, it was confirmed that the extruded brazing material welded tube according to the present invention has a sufficient function as a refrigerant passage tube for a heat exchanger.
以上述べたように本発明のアルミニウム熱交換器用冷媒
管の製造方法によれば次に示す効果が得られる。As described above, according to the method of manufacturing a refrigerant tube for an aluminum heat exchanger of the present invention, the following effects can be obtained.
（１１ろう材シートあるいはワイヤを用い亜鉛溶射によ
り、押出し管の表面にろう材を溶着させる事により押出
し管表面に厚さの均一なろう材層を効率よく形成させる
事ができる。(11) By welding the brazing material to the surface of the extruded tube by zinc spraying using a brazing material sheet or wire, it is possible to efficiently form a brazing material layer of uniform thickness on the surface of the extruded tube.
（２）ろう材の歩留′″１シが著しく向上する。(2) The yield of brazing filler metal is significantly improved.
（３）ろう材の溶着手段として亜鉛溶射を行なうことに
より亜鉛がろう何工程中に拡散し密着性のよい亜鉛拡散
層を形成するため押出されたアルミニウム製冷媒管の耐
食性が著しく向上する。(3) By performing zinc thermal spraying as a means for welding the brazing material, zinc diffuses during the brazing process and forms a zinc diffusion layer with good adhesion, thereby significantly improving the corrosion resistance of the extruded aluminum refrigerant pipe.
（４）溶着したろう材が冶金的に押出された冷媒管と接
合するため押出し管を曲げたシすることが可能となシ製
品加工上のハンドリングが著しくやり易くなる。(4) Since the welded brazing filler metal is metallurgically joined to the extruded refrigerant tube, it is possible to bend the extruded tube, which greatly facilitates handling during product processing.
第１図は本発明方法の基本原理説明図、第２図は本発明
方法を具体化した１実施例装置の側断面図を示す。
１・・・押出し管、２・・・ろう材、３・・・溶融亜鉛
、４・・・溶射ガン、５・・・溶着ろう材層、６・・・
ビレット、７・・・押出し機、８・・・ろう材シートコ
イル、９・・・押出し管、１０・・・ろう材シート、１
１・・・ろう材シート密着成形ロール、１２・・・ろう
材シート押え板、１３・・・溶射ガン、１４・・・亜鉛
、１５・・・溶着ろう材。FIG. 1 is a diagram illustrating the basic principle of the method of the present invention, and FIG. 2 is a sectional side view of an embodiment of an apparatus embodying the method of the present invention. DESCRIPTION OF SYMBOLS 1... Extruded pipe, 2... Brazing metal, 3... Molten zinc, 4... Thermal spray gun, 5... Welding brazing metal layer, 6...
Billet, 7... Extruder, 8... Brazing material sheet coil, 9... Extruded tube, 10... Brazing material sheet, 1
DESCRIPTION OF SYMBOLS 1... Brazing metal sheet close contact forming roll, 12... Brazing metal sheet press plate, 13... Thermal spray gun, 14... Zinc, 15... Welding brazing metal.
Claims (1)
媒通路管の外表面にＡｌ−Ｓｉ合金あるいはＡｌ−Ｓｉ
−Ｍｇ合金製シートあるいはワイヤーを密着させ、これ
に亜鉛（Ｚｎ）を溶射して前記冷媒通路管の外表面にろ
う材層を形成させることを特徴とするアルミニウム熱交
換器用冷媒管の製造方法。(1) Al-Si alloy or Al-Si is added to the outer surface of the aluminum alloy refrigerant passage pipe manufactured by extrusion processing.
- A method for manufacturing a refrigerant tube for an aluminum heat exchanger, comprising: adhering a Mg alloy sheet or wire to the sheet and thermally spraying zinc (Zn) thereon to form a brazing material layer on the outer surface of the refrigerant passage tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11729489A JPH02299775A (en) | 1989-05-12 | 1989-05-12 | Manufacture of refrigerant tube for aluminum heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11729489A JPH02299775A (en) | 1989-05-12 | 1989-05-12 | Manufacture of refrigerant tube for aluminum heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02299775A true JPH02299775A (en) | 1990-12-12 |
Family
ID=14708195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11729489A Pending JPH02299775A (en) | 1989-05-12 | 1989-05-12 | Manufacture of refrigerant tube for aluminum heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02299775A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361405A (en) * | 2000-09-25 | 2002-12-18 | Showa Denko Kk | Method for manufacturing heat exchanger |
| EP1333952A1 (en) * | 2000-09-25 | 2003-08-13 | Showa Denko K.K. | Method for manufacturing heat exchanger |
| JP2013043191A (en) * | 2011-08-23 | 2013-03-04 | Yutaka Giken Co Ltd | Method of manufacturing heat transfer case |
| JP2015168856A (en) * | 2014-03-07 | 2015-09-28 | 三菱重工業株式会社 | Spray coating execution method |
-
1989
- 1989-05-12 JP JP11729489A patent/JPH02299775A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361405A (en) * | 2000-09-25 | 2002-12-18 | Showa Denko Kk | Method for manufacturing heat exchanger |
| EP1333952A1 (en) * | 2000-09-25 | 2003-08-13 | Showa Denko K.K. | Method for manufacturing heat exchanger |
| EP1333952A4 (en) * | 2000-09-25 | 2007-10-31 | Showa Denko Kk | Method for manufacturing heat exchanger |
| JP2013043191A (en) * | 2011-08-23 | 2013-03-04 | Yutaka Giken Co Ltd | Method of manufacturing heat transfer case |
| JP2015168856A (en) * | 2014-03-07 | 2015-09-28 | 三菱重工業株式会社 | Spray coating execution method |
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