JPS6129698A - Aluminium made weld tube for heat exchanger - Google Patents
Aluminium made weld tube for heat exchangerInfo
- Publication number
- JPS6129698A JPS6129698A JP15100484A JP15100484A JPS6129698A JP S6129698 A JPS6129698 A JP S6129698A JP 15100484 A JP15100484 A JP 15100484A JP 15100484 A JP15100484 A JP 15100484A JP S6129698 A JPS6129698 A JP S6129698A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- weld
- blazing
- cut
- flame spraying
- 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
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)
Abstract
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ェルドチューブ
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.
（ｏ）従来技術と問題点
従来、熱交換器用アルミニウム製ウェルドチューブとし
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。(o) Prior Art and Problems Conventionally, as an aluminum weld tube for a heat exchanger, for example, the one shown in Japanese Patent Application Laid-open No. 7446/1983 or shown in FIG. 3 is known.
アルミニウム製のウェルドチューブａは、フィンとのろ
う付けのため、外表面にろう材（例えば／Ｉｊ２−３ｉ
系合金（４０００系））ｂがクラッド′されている。The aluminum weld tube a has a brazing material (e.g. /Ij2-3i) on its outer surface for brazing with the fin.
The alloy (4000 series)) b is clad.
通常、アルミニウム製のウェルドチューブａは少なくと
も外面にろう材すをクラッドしたチューブ素材をチュー
ブ形状（楕円状）に成形すると共に、その両端部をウェ
ルドして形成される。この際、第３図（ａｌに示すよう
にウェルド部Ｃには内外に突出するビードｄが形成され
る。Usually, the aluminum weld tube a is formed by forming a tube material having at least the outer surface clad with a brazing material into a tube shape (elliptical shape) and welding both ends of the tube material. At this time, a bead d protruding inwardly and outwardly is formed in the weld portion C as shown in FIG. 3 (al).
然し乍ら、このウェルド部Ｃの外側のビードｄは組立の
都合上カットされるため、第３図ｆｂ）に示すように母
材（例えばＡβ−Ｍｎ系（３０００系））ｅ’＋＜露出
している。母材ｅはろう材す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膚がある。However, since the bead d on the outside of this weld part C is cut for convenience of assembly, the base material (e.g. Aβ-Mn series (3000 series)) e'+<exposed There is. Since the base material e has a lower potential than the brazing material, corrosion of the base material 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、カットされたウェルド部の耐
蝕性を向上させ、以って熱交換器全体の耐蝕性、耐久性
を向上させるε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, thereby improving the corrosion resistance of the entire heat exchanger. It has ε which improves corrosion resistance 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
ルミニウム製ウェルドチューブは、少なくとも外表面に
ろう材がクラッドされているチューブ素材をチューブ形
状に成形すると共に、両端部をウェルドして成る熱交換
器用アルミニウム製ウェルドチューブに於て、ウェルド
部に形成されたビードをカットし、このカット部にクラ
ッ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 whose outer surface is 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 weld tube for heat exchangers, the bead formed in the weld part is cut, and a metal with the same composition as the brazing material of the cladding layer is 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、常法に従って製造されたウェルドチューブ１を用
意する。このウェルドチューブ１は例えば第１図（ａ）
に示すように母材（例えばＡ７！−Ｍｎ系合金（３００
０系））２の外表面にろう材（例えばＡβ−３ｉ系合金
（４０００系））３がクラッドされたアルミニウム板材
を偏平チュ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ェルドすることにより
形成される。このウェルドチューブ１は一方の曲部４に
ウェルド部５を有し、このウェルド部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. This weld tube 1 is shown in FIG. 1(a), for example.
As shown in the figure, the base material (for example, A7!-Mn alloy (300
0 series)) A state in which an aluminum plate material whose outer surface is clad with a brazing material (for example, Aβ-3i alloy (4000 series)) 3 is formed into a flat tube shape, and both ends of the aluminum plate material are brought into contact. It is formed by welding. This weld tube 1 has a weld portion 5 on one curved portion 4, and a bead 6 is formed in this weld portion 5.
次に、このウェルドチューブ１は熱交換器コアの組立の
都合上、例えば第１図ｆｂｌに示すように、ウェルド部
５のビード６をカットする。このカット部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, the bead 6 of the weld portion 5 of the weld tube 1 is cut, as shown in FIG. 1 fbl, for example. This cut portion 7 is the brazing material 3
is peeled off, so the base material 2 is exposed.
更に、カット部７を形成したウェルドチューブ１は、例
えば第１図（Ｃ１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ット部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を剥離する膚はなく、むし
ろカット部７とこれに連なるろう材３上に積層し、ガツ
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 thermal spray coating layer 8 on the cut portion 7 and its vicinity by thermally spraying a metal having the same composition as the brazing filler metal using a thermal spray gun, for example, as shown in FIG. 1 (C1). This thermal spray coating layer 8 is coated with the brazing material 3.
Since it is made of a metal with the same composition as the brazing filler metal 3, no potential difference is generated between the brazing filler metal 3 and the brazing filler metal 3. Furthermore, since the metal with the same composition as the brazing material to be thermally sprayed is cooled down in a short time during the formation of the thermal spray coating layer 8, there is no skin to peel off the brazing material 3, but rather the cut portion 7 and the brazing material connected thereto are The brazing material 3 can be laminated on top of the brazing material 3 to cover the gut portion 7 and the brazing material 3 in the vicinity thereof to have the same thickness as the brazing material 3 in other parts.
かくして、得られたウェルドチューブ１は、カット部７
に溶射被覆層８が形成されているため、カット部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。Thus, the obtained weld tube 1 has a cut portion 7
Since the thermal spray coating layer 8 is formed on the heat exchanger, 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、ウェルド部５をカットしたウェルドチュ−ブ１に溶
射するものであるから、例えば従来のウェルドチューブ
製造工程に於けるビードカッ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 carried out simply by installing a thermal spray gun after the bead cutting process in the conventional weld tube manufacturing process, for example. can.
更に、ウェルドチューブ１のカット部７に溶射被覆Ｎ８
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、ウェルドチューブ１
とプレート９とのろう付は時に溶射被覆層８のろう月が
両者の接合に寄与し、ろう付は性を向上させる。以って
、熱交換器の耐久性を向上させることができる。Furthermore, the cut portion 7 of the weld tube 1 is thermally sprayed with N8 coating.
is formed, so when creating the core C of the heat exchanger R as shown in FIG. 2, for example, the weld tube 1
When brazing the plate 9 with the plate 9, the soldering of the thermally sprayed coating layer 8 sometimes contributes to the bonding between the two, and the brazing improves the properties. Therefore, the durability of the heat exchanger can be improved.
尚１．上記実施例ではウェルド部５が曲部４に形成され
た場合について説明したが、フィン１０との当接面側に
ウェルド部５を有するチューブにも適用できることは云
うまでもない。又、チューブ板材は内側にＺｎを有する
皮材を有するものであってもよい。Note 1. In the above embodiment, a case has been described in which the weld portion 5 is formed on the curved portion 4, but it goes without saying that the present invention can also be applied to a tube having the weld portion 5 on the side that contacts the fin 10. Further, the tube plate material may have a skin material containing Zn inside.
（へ）発明の詳細
な説明した如く、本発明は、ウェルド部のカット部が溶
射被覆されるため、耐蝕性が向上する。(f) As described in detail, in the present invention, the cut portion of the weld portion is coated by thermal spray coating, so that corrosion resistance is improved.
又、ウェルド部のカット部にもろう材があるため、チュ
ーブとプレートとのろう付は性が向上し、かつ熱交換器
の耐久性が向上する等の利点を有する。Further, since there is a brazing material in the cut part of the weld part, there are advantages such as improved brazing properties between the tube and the plate and improved durability of the heat exchanger.
第１図（ａｌ〜（Ｃ１は本発明の一実施例を工程を追っ
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（ａｌ、 （ｂｌは従来のウェル
ドチューブを示す断面図である。
■・・・ウェルドチューブ、２・・・母材、３・・・ろ
う材、４・・・曲部、５・・・ウェルド部、６・・・ビ
ード、７・・・カット部、８・・溶射被覆層。Figure 1 (al~(C1) is a cross-sectional view 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; Figure 3 (al, (bl) is a sectional view showing a conventional weld tube.■... Weld tube, 2... Base material, 3... Brazing metal, 4... Bent part, 5... Weld part, 6... - Bead, 7... Cut portion, 8... Thermal spray coating layer.
Claims (1)
ブ素材をチューブ形状に成形すると共に、両端部をウェ
ルドして成る熱交換器用アルミニウム製ウェルドチュー
ブに於て、ウェルド部に形成されたビードをカットし、
このカット部にクラッ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
アルミニウム製ウェルドチューブ。In an aluminum weld tube for a heat exchanger, which is made by forming a tube material whose outer surface is clad with a brazing material into a tube shape and welding both ends, a bead formed in the weld part is cut,
This aluminum weld tube for heat exchangers is characterized by having a coating layer formed by thermally spraying a metal with the same composition as the brazing material of the cladding layer on the cut portion.
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 true JPS6129698A (en) | 1986-02-10 |
| JPS64640B2 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 (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 |
| US8006750B2 (en) | 2005-03-08 | 2011-08-30 | Anthony Joseph Cesaroni | Method for sealing heat exchanger tubes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10350020B2 (en) | 2015-05-01 | 2019-07-16 | Chris Geiger | Medical tray assembly |
-
1984
- 1984-07-20 JP JP15100484A patent/JPS6129698A/en active Granted
Cited By (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 |
| US8006750B2 (en) | 2005-03-08 | 2011-08-30 | Anthony Joseph Cesaroni | Method for sealing heat exchanger tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS64640B2 (en) | 1989-01-09 |
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