JPS64640B2 - - Google Patents
Info
- Publication number
- JPS64640B2 JPS64640B2 JP15100484A JP15100484A JPS64640B2 JP S64640 B2 JPS64640 B2 JP S64640B2 JP 15100484 A JP15100484 A JP 15100484A JP 15100484 A JP15100484 A JP 15100484A JP S64640 B2 JPS64640 B2 JP S64640B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- weld
- cut
- brazing
- heat exchanger
- 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
Links
- 239000000463 material Substances 0.000 claims description 24
- 238000005219 brazing Methods 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 10
- 239000011324 bead Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 239000000945 filler Substances 0.000 description 4
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process 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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
【発明の詳細な説明】
(イ) 発明の技術分野
本発明は、熱交換器用アルミニウム製ウエルド
チユーブに関する。Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to an aluminum weld tube for a heat exchanger.
(ロ) 従来技術と問題点
従来、熱交換器用アルミニウム製ウエルドチユ
ーブとしては、例えば特開昭59−7446号又は第３
図に示すものが知られている。(b) Prior art and problems Conventionally, as aluminum welded tubes for heat exchangers, for example, Japanese Patent Application Laid-Open No. 59-7446 or No. 3
The one shown in the figure is known.
アルミニウム製のウエルドチユーブａは、フイ
ンとのろう付けのため、外表面にろう材（例えば
Al−Si系合金（4000系））ｂがクラツドされてい
る。 Aluminum weld tube a has a brazing material (e.g.
Al-Si alloy (4000 series) b is clad.
通常、アルミニウム製のウエルドチユーブａは
少なくとも外面にろう材ｂをクラツドしたチユー
ブ素材をチユーブ形状（楕円状）に成形すると共
に、その両端部をウエルドして形成される。この
際、第３図ａに示すようにウエルド部ｃには内外
に突出するビードｄが形成される。 Usually, an aluminum weld tube a is formed by forming a tube material having at least the outer surface clad with a brazing material b into a tube shape (elliptical shape) and welding both ends of the tube material. At this time, as shown in FIG. 3a, a bead d protruding inwardly and outwardly is formed in the weld portion c.
然し乍ら、このウエルド部ｃの外側のビードｄ
は組立の都合上カツトされるため、第３図ｂに示
すように母材（例えばAl−Mn系（3000系））ｅ
が露出している。母材ｅはろう材ｂより電位的に
卑であるため、母材ｅの腐蝕が容易に進行し、熱
交換器全体の耐蝕性、耐久性を低下させる虞があ
る。 However, the bead d on the outside of this weld portion c
is cut for convenience of assembly, so the base material (e.g. Al-Mn series (3000 series)) e is cut as shown in Figure 3b.
is exposed. Since the base metal e has a lower potential than the brazing metal b, corrosion of the base metal e easily progresses, which may reduce the corrosion resistance and durability of the entire heat exchanger.
(ハ) 発明の目的
本発明はかかる従来の問題点を解決するために
為されたものであり、その目的は、カツトされた
ウエルド部の耐蝕性を向上させ、以つて熱交換器
全体の耐蝕性、耐久性を向上させることにある。(c) Purpose of the Invention The present invention has been made to solve the problems of the conventional art, and its purpose is to improve the corrosion resistance of the cut weld part and thereby improve the corrosion resistance of the entire heat exchanger. The goal is to improve performance and durability.
(ニ) 発明の構成
かかる目的を達成するために本発明に係る熱交
換器用アルミニウム製ウエルドチユーブは、少な
くとも外表面にろう材がクラツドされているチユ
ーブ素材をチユーブ形状に成形すると共に、両端
部をウエルドして成る熱交換器用アルミニウム製
ウエルドチユーブに於て、ウエルド部に形成され
たビードをカツトし、このカツト部にクラツド層
のろう材と同等成分の金属を溶射し、被覆層を形
成したものである。(d) Structure of the Invention In order to achieve the above object, the aluminum welded tube for a heat exchanger according to the present invention is produced by forming a tube material having at least the outer surface clad with a brazing material into a tube shape, and by forming both ends of the tube material into a tube shape. In a welded aluminum welded tube for heat exchangers, the bead formed in the welded part is cut, and a metal with the same composition as the brazing material of the cladding layer is thermally sprayed onto the cut part to form a coating layer. It is.
(ホ) 発明の実施例 以下、本発明を第１図に基づいて説明する。(e) Examples of the invention The present invention will be explained below based on FIG.
まず、常法に従つて製造されたウエルドチユー
ブ１を用意する。このウエルドチユーブ１は例え
ば第１図ａに示すように母材（例えばAl−Mn系
合金（3000系））２の外表面にろう材（例えばAl
−Si系合金（4000系））３がクラツドされたアル
ミニウム板材を偏平チユーブ状に成形加工すると
共に、アルミニウム板材の両端部を当接した状態
でウエルドすることにより形成される。このウエ
ルドチユーブ１は一方の曲部４にウエルド部５を
有し、このウエルド部５にはビード６が形成され
ている。 First, a weld tube 1 manufactured according to a conventional method is prepared. For example, as shown in FIG. 1a, this weld tube 1 has a brazing material (for example, Al
-Si alloy (4000 series)) 3 is formed by forming an aluminum plate into a flat tube shape, and welding the aluminum plate with both ends of the plate in contact with each other. This weld tube 1 has a weld portion 5 at one curved portion 4, and a bead 6 is formed in this weld portion 5.
次に、このウエルドチユーブ１は熱交換器コア
の組立の都合上、例えば第１図ｂに示すように、
ウエルド部５のビード６をカツトする。このカツ
ト部７はろう材３が剥ぎ取られるため、母材２が
露出している。 Next, for convenience of assembling the heat exchanger core, this weld tube 1 is arranged as shown in FIG. 1b, for example.
Cut the bead 6 of the weld part 5. Since the brazing material 3 is peeled off from the cut portion 7, the base material 2 is exposed.
更に、カツト部７を形成したウエルドチユーブ
１は、例えば第１図ｃに示すように、ろう材と同
等成分の金属を溶射ガンにより溶射してカツト部
７及びその近傍に溶射被覆層８を形成する。この
溶射被覆層８はろう材３と同等成分の金属で構成
されているため、ろう材３との間で電位差を生ず
ることがない。又、溶射されるろう材と同等の成
分の金属は溶射被覆層８の形成時に短時間で冷却
されるため、ろう材３を剥離する虞はなく、むし
ろカツト部７とこれに連なるろう材３上に積層
し、カツト部７とその近傍のろう材３上を被覆し
て他の部位のろう材３と同等の厚みにすることが
できる。 Further, the weld tube 1 with the cut portion 7 formed thereon is coated with a metal having the same composition as the brazing material using a thermal spray gun to form a thermal spray coating layer 8 on the cut portion 7 and its vicinity, as shown in FIG. 1c, for example. do. Since this thermal spray coating layer 8 is made of a metal having the same composition as the brazing filler metal 3, no potential difference is generated between the spray coating layer 8 and the brazing filler metal 3. Furthermore, since the metal having the same composition as the brazing material to be thermally sprayed is cooled in a short period of time during the formation of the thermal spray coating layer 8, there is no risk of the brazing material 3 being peeled off, but rather the cut portion 7 and the brazing material 3 connected thereto are not likely to peel off. The cut portion 7 and the brazing filler metal 3 in the vicinity thereof can be covered with the same thickness as the brazing filler metal 3 in other parts.
かくして、得られたウエルドチユーブ１は、カ
ツト部７に溶射被覆層８が形成されているため、
カツト部７より露出する母材２の腐蝕が確実に防
止され、熱交換器全体の耐蝕性、耐久性を向上す
ることができる。 The thus obtained weld tube 1 has the thermal spray coating layer 8 formed on the cut portion 7, so that
Corrosion of the base material 2 exposed from the cut portion 7 is reliably prevented, and the corrosion resistance and durability of the entire heat exchanger can be improved.
又、ウエルド部５をカツトしたウエルドチユー
ブ１に溶射するものであるから、例えば従来のウ
エルドチユーブ製造工程に於けるビードカツト処
理工程の後に溶射ガンを設けるだけで、連続的に
処理することができる。 Furthermore, since the weld portion 5 is thermally sprayed onto the cut weld tube 1, continuous treatment can be achieved by simply providing a thermal spray gun after the bead cut treatment step in the conventional weld tube manufacturing process, for example.
更に、ウエルドチユーブ１のカツト部７に溶射
被覆層８が形成されているため、例えば第２図に
示すような熱交換器ＲのコアＣを作成するに際
し、ウエルドチユーブ１とプレート９とのろう付
け時に溶射被覆層８のろう材が両者の接合に寄与
し、ろう付け性を向上させる。以つて、熱交換器
の耐久性を向上させることができる。 Furthermore, since the thermal spray coating layer 8 is formed on the cut portion 7 of the weld tube 1, when making the core C of the heat exchanger R as shown in FIG. At the time of attachment, the brazing material of the thermally sprayed coating layer 8 contributes to the bonding between the two, improving brazing properties. Therefore, the durability of the heat exchanger can be improved.
尚、上記実施例ではウエルド部５が曲部４に形
成された場合について説明したが、フイン１０と
の当接面側にウエルド部５を有するチユーブにも
適用できることは云うまでもない。又、チユーブ
板材は内側にZnを有する皮材を有するものであ
つてもよい。 In the above embodiment, the case where the weld portion 5 is formed on the curved portion 4 has been described, but it goes without saying that the present invention can also be applied to a tube having the weld portion 5 on the side of the contact surface with the fin 10. Further, the tube plate material may have a skin material containing Zn on the inside.
(ヘ) 発明の効果
以上説明した如く、本発明は、ウエルド部のカ
ツト部が溶射被覆されるため、耐蝕性が向上す
る。又、ウエルド部のカツト部にもろう材がある
ため、チユーブとプレートとのろう付け性が向上
し、かつ熱交換器の耐久性が向上する等の利点を
有する。(F) Effects of the Invention As explained above, in the present invention, since the cut portion of the weld portion is coated by thermal spray coating, corrosion resistance is improved. Furthermore, since there is a brazing material in the cut part of the weld part, there are advantages such as improved brazing performance between the tube and the plate and improved durability of the heat exchanger.
第１図ａ〜ｃは本発明の一実施例を工程を追つ
て示す断面図、第２図は本発明を熱交換器に適用
した例を示す正面図、第３図ａ，ｂは従来のウエ
ルドチユーブを示す断面図である。
１……ウエルドチユーブ、２……母材、３……
ろう材、４……曲部、５……ウエルド部、６……
ビード、７……カツト部、８……溶射被覆層。
Figures 1 a to c are cross-sectional views showing one embodiment of the present invention step by step, Figure 2 is a front view showing an example in which the present invention is applied to a heat exchanger, and Figures 3 a and b are It is a sectional view showing a weld tube. 1...Weld tube, 2...Base material, 3...
Brazing metal, 4...Curved part, 5...Weld part, 6...
Bead, 7... Cut portion, 8... Thermal spray coating layer.
Claims (1)
いるチユーブ素材をチユーブ形状に成形すると共
に、両端部をウエルドして成る熱交換器用アルミ
ニウム製ウエルドチユーブに於て、ウエルド部に
形成されたビードをカツトし、このカツト部にク
ラツド層のろう材と同等成分の金属を溶射し、被
覆層を形成したことを特徴とする熱交換器用アル
ミニウム製ウエルドチユーブ。1. In an aluminum welded tube for a heat exchanger, which is made by forming a tube material with a brazing metal clad on at least the outer surface into a tube shape and welding both ends, cut the bead formed in the welded part. An aluminum welded tube for a heat exchanger, characterized in that a metal having the same composition as the brazing material of the cladding layer is thermally sprayed on the cut portion to form a coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15100484A JPS6129698A (en) | 1984-07-20 | 1984-07-20 | Aluminium made weld tube for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15100484A JPS6129698A (en) | 1984-07-20 | 1984-07-20 | Aluminium made weld tube for heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6129698A JPS6129698A (en) | 1986-02-10 |
| JPS64640B2 true JPS64640B2 (en) | 1989-01-09 |
Family
ID=15509181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15100484A Granted JPS6129698A (en) | 1984-07-20 | 1984-07-20 | Aluminium made weld tube for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129698A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11478323B2 (en) | 2015-05-01 | 2022-10-25 | Chris Geiger | Medical tray assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63277295A (en) * | 1987-01-27 | 1988-11-15 | Asahi Glass Co Ltd | Ferroelectric liquid crystal composition |
| CA2538761A1 (en) | 2005-03-08 | 2006-09-08 | Anthony Joseph Cesaroni | Method for sealing heat exchanger tubes |
-
1984
- 1984-07-20 JP JP15100484A patent/JPS6129698A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11478323B2 (en) | 2015-05-01 | 2022-10-25 | Chris Geiger | Medical tray assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6129698A (en) | 1986-02-10 |
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