JP3513775B2 - Brazing method of metal tube and bracket - Google Patents
Brazing method of metal tube and bracketInfo
- Publication number
- JP3513775B2 JP3513775B2 JP6479094A JP6479094A JP3513775B2 JP 3513775 B2 JP3513775 B2 JP 3513775B2 JP 6479094 A JP6479094 A JP 6479094A JP 6479094 A JP6479094 A JP 6479094A JP 3513775 B2 JP3513775 B2 JP 3513775B2
- Authority
- JP
- Japan
- Prior art keywords
- bracket
- brazing material
- brazing
- metal tube
- shaped
- 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 - Fee Related
Links
Landscapes
- Arc Welding In General (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、金属管とブラケットと
のロウ付け方法に関する。特に、外径６〜１０mmの中細
管からなる燃料配管へのブラケット固着に好適な発明で
ある。
【０００２】
【従来の技術】従来の鋼管等の金属管とブラケット（通
常、金属管と同種金属）とのロウ付けは、下記の様にし
て行っていた（図１参照）。
【０００３】金属管１２をブラケット１４の管保持部
１４ａに当接させて、ティグ溶接（イナートガスアーク
溶接）またはプロジェクション溶接（重ね抵抗溶接）に
より仮固着（仮付け）する。
【０００４】金属管１２とブラケット１４とのロウ付
け予定部位に棒状ロウ材１６を置き（セットし）、その
後、金属管／ブラケット仮固着体を、加熱炉中に搬入し
てロウ付けを行う。
【０００５】なお、図例中、１４ｂは車体取付け部で、
１４ｃは取付けボルト孔である。
【０００６】
【発明が解決しようとする課題】しかし、上記ロウ付け
方法の場合、下記のような問題点があり、ロウ付け工数
が全体として嵩んだ。
【０００７】金属管／ブラケット仮固着体を、加熱炉
に搬入する際、棒状ロウ材が落下するおそれがある。加
熱炉への搬入姿勢も制限され、搬入後、ロウ材を治具等
を使用して整列させる必要があった。
【０００８】金属管とブラケットとのロウ付け予定部
位に棒状ロウ材をセット（置く）手間が余分にいる。
【０００９】なお、ロウ材として、ペースト状のものを
使用すれば、上記の問題点は解決するが、塗布量ばら
つきが大きく、安定したロウ付強度を、金属管とブラケ
ットとの間に得難く、望ましくないとともに、やはり、
金属管とブラケットとのロウ付け予定部位にペースト状
ロウ材を塗布する手間が余分にいる。
【００１０】本発明は、上記にかんがみて、金属管とブ
ラケットとをロウ付けするに際して、金属管／ブラケッ
ト仮固着体を、加熱炉中に搬入する際、棒状ロウ材が落
下するおそれがなく、しかも、棒状ロウ材をセットする
手間もほとんど不要で、ロウ付け工数を全体として大幅
削減可能なロウ付け方法を提供することを目的とする。
【００１１】
【課題を解決するための手段】本発明に係る金属管とブ
ラケツトとのロウ付け方法は、上記課題を下記構成によ
り解決するものである。
【００１２】金属管をブラケットの管保持部に、ティグ
溶接またはプロジェクション溶接により仮固着するとと
もに、前記金属管とブラケットとのロウ付予定部位に棒
状ロウ材をセットし、その後、金属管／ブラケット仮固
着体を、加熱炉に搬入してロウ付けを行うに際して、ブ
ラケットのプレス加工時に、ブラケットにロウ材保持孔
を形成するとともに、該ロウ材保持孔に棒状ロウ材を圧
入して保持させることを、特徴とする。
【００１３】
【実施例】以下、本発明の方法について、図２〜４に基
づいて説明をする。なお、既述部分と同一部分について
は、同一図符号を付して、それらの説明の全部または一
部を省略する。
【００１４】(1) ブラケットのプレス加工時に、ブラケ
ツト１４の管保持部１４ａの任意位置にロウ材保持孔１
８を形成するとともに、該ロウ材保持孔１８に棒状ロウ
材１６を圧入する（図３・４参照）。ここで、ロウ材保
持孔１８と棒状ロウ材１６の締めしろは、通常、−０．
１〜−０．５mm（好ましくは、−０．２〜−０．４mm）
とする。また、ロウ材の長さは、ロウ付け面積に合わせ
た長さとする。
【００１５】なお、ロウ材保持孔１８は、図例では、管
保持部１４ａの車体保持側側壁に１個形成したが、複数
個でもよく、また、溝底部ないし開口側側壁、それらの
組み合わせであってもよい。また、プロジェクション溶
接用のブラケツト１４の管保持部１４ａの内周面に突起
１５、１５が形成されている。また、ロウ材は、金属管
及びブラケットが、鋼材の結合の場合は、銅ロウ、ニツ
ケルロウ等を使用する。図例では棒状ロウ材１６は、リ
ベット状であるが、直棒状であってもよい。
【００１６】なお、棒状ロウ材１６の圧入は、例えば、
ロウ保持孔１８を形成後、ブラケット曲げ加工前に該
ロウ材保持孔１８に線状ロウ材を手作業等で圧入して切
断するか、加工完了後のブラケットの第一パーツフィ
ーダと棒状ロウ材の第二パーツフィーダを回転テーブル
の周囲に順接して自動圧入して（特に図示せず。）行
う。
【００１７】(2) 次に、ロウ保持孔１８に棒状ロウ材１
６を保持させた状態で、管保持部１４ａに、金属管１２
を当接（嵌合）させて、プロジェクション溶接を行う。
勿論、ティグ溶接であってもよい。この場合は、管保持
部１４ａに突起１５を設ける必要はない。
【００１８】このとき、ロウ材１６はロウ材保持孔１８
に圧入されているので落下するおそれはない。
【００１９】(3) こうして調製した金属管１２／ブラケ
ット１４仮固着体を、加熱炉にメツシユベルトで連続的
に搬入してロウ付けを行う。ロウ付け条件は、たとえ
ば、銅ロウの場合、１１２０℃×３min とする。
【００２０】このとき、ロウ材１６はロウ材保持孔１８
に圧入されているので落下するおそれはない。なお、保
持孔１８内のロウ材１６も溶けてロウ付けに寄与する。
【００２１】
【発明の作用・効果】本発明の金属管とブラケットとの
ロウ付け方法は、上記構成により、下記のような理由に
より、ロウ付け工数が全体として大幅削減可能となる。
【００２２】ロウ材をロウ材保持孔に圧入するため、
ロウ材のセット位置が安定し、ロウタレのおそれがない
とともに、ロウ付け不良が発生するおそれがない。
【００２３】上記と同様の理由で、加熱炉に搬入す
る際、棒状ロウ材が落下するおそれがない。このため、
加熱炉への搬入姿勢も制限されず、搬入後、ロウ材を治
具等を使用して整列させる必要もない。
【００２４】ロウ付け保持孔の形成及びロウ材のセッ
トを、ブラケットのプレス工程中の適宜時機にできるた
め、ロウ材のセットの余分な工数がほとんど不要とな
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for brazing a metal tube and a bracket. In particular, the present invention is suitable for fixing a bracket to a fuel pipe composed of a medium-thin pipe having an outer diameter of 6 to 10 mm. 2. Description of the Related Art A conventional metal pipe such as a steel pipe and a bracket (usually the same kind of metal as the metal pipe) have been brazed as follows (see FIG. 1). The metal tube 12 is brought into contact with the tube holding portion 14a of the bracket 14, and is temporarily fixed (temporarily attached) by TIG welding (inert gas arc welding) or projection welding (lap resistance welding). [0004] A rod-shaped brazing material 16 is placed (set) at a portion where the metal tube 12 and the bracket 14 are to be brazed, and then the metal tube / bracket temporary fixed body is carried into a heating furnace for brazing. [0005] In the figure, reference numeral 14b denotes a vehicle body mounting portion.
14c is a mounting bolt hole. However, in the case of the above-mentioned brazing method, there are the following problems, and the number of brazing steps is increased as a whole. When the metal tube / bracket temporarily fixed body is carried into the heating furnace, the rod-shaped brazing material may fall. The loading posture to the heating furnace is also limited, and after the loading, the brazing material must be aligned using a jig or the like. [0008] It takes extra time to set (place) the bar-shaped brazing material at the portion where the metal tube and the bracket are to be brazed. Although the above problem can be solved by using a paste material as the brazing material, it is difficult to obtain a stable brazing strength between the metal pipe and the bracket because the applied amount varies greatly. , Undesirable, and, again,
Extra work is required to apply the paste brazing material to the portion where the metal tube and the bracket are to be brazed. In view of the above, according to the present invention, when brazing a metal tube and a bracket, when the metal tube / bracket temporary fixed body is carried into a heating furnace, there is no danger of the rod-shaped brazing material falling. In addition, it is an object of the present invention to provide a brazing method that hardly requires the work of setting a bar-shaped brazing material and can greatly reduce the number of brazing steps as a whole. A method for brazing a metal tube and a bracket according to the present invention solves the above-mentioned problems by the following constitution. [0012] The metal pipe is temporarily fixed to the pipe holding portion of the bracket by TIG welding or projection welding, and a bar-shaped brazing material is set at a portion where the metal pipe and the bracket are to be brazed. When the fixed body is carried into the heating furnace and brazed, when the bracket is pressed, a brazing material holding hole is formed in the bracket, and a bar-shaped brazing material is pressed into the brazing material holding hole and held. , Features. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described below with reference to FIGS. The same parts as those described above are denoted by the same reference numerals, and all or part of the description thereof will be omitted. (1) At the time of pressing the bracket, the brazing material holding hole 1 is placed at an arbitrary position of the tube holding portion 14a of the bracket 14.
8 and press-fit the bar-shaped brazing material 16 into the brazing material holding hole 18 (see FIGS. 3 and 4). Here, the interference between the brazing material holding hole 18 and the bar-shaped brazing material 16 is usually −0.
1 to -0.5 mm (preferably -0.2 to -0.4 mm)
And Further, the length of the brazing material is a length corresponding to the brazing area. Although one brazing material holding hole 18 is formed in the body holding side wall of the pipe holding portion 14a in the illustrated example, a plurality of brazing material holding holes 18 may be provided. There may be. Further, projections 15 are formed on the inner peripheral surface of the tube holding portion 14a of the bracket 14 for projection welding. Further, as the brazing material, when the metal tube and the bracket are made of a steel material, copper brazing, nickel brazing or the like is used. In the illustrated example, the bar-shaped brazing material 16 has a rivet shape, but may have a straight bar shape. The press-fitting of the bar-shaped brazing material 16 is performed, for example, by
After the brazing holes 18 are formed, the brazing material is pressed into the brazing material holding holes 18 by hand or the like before the bracket bending process, or the brazing material is cut into the first part feeder and the bar-shaped brazing material. The second part feeder is automatically press-fitted (not particularly shown) around the turntable. (2) Next, the rod-shaped brazing material 1 is inserted into the brazing holes 18.
6 while holding the metal tube 12 in the tube holding portion 14a.
Are brought into contact (fitting) to perform projection welding.
Of course, TIG welding may be used. In this case, it is not necessary to provide the projection 15 on the tube holding portion 14a. At this time, the brazing material 16 is
There is no danger of falling because it is press-fitted. (3) The metal tube 12 / bracket 14 temporarily fixed body thus prepared is continuously loaded into a heating furnace by a mesh belt and brazed. The brazing condition is, for example, 1120 ° C. × 3 min for copper brazing. At this time, the brazing material 16 is
There is no danger of falling because it is press-fitted. The brazing material 16 in the holding hole 18 also melts and contributes to brazing. According to the method for brazing a metal tube and a bracket according to the present invention, the number of brazing steps can be greatly reduced as a whole due to the following reasons. In order to press the brazing material into the brazing material holding hole,
The setting position of the brazing material is stable, there is no risk of sagging, and there is no risk of poor brazing. For the same reason as described above, there is no possibility that the bar-shaped brazing material will fall when it is carried into the heating furnace. For this reason,
The loading posture of the heating furnace is not limited, and there is no need to align the brazing material using a jig or the like after the loading. Since the formation of the brazing holes and the setting of the brazing material can be performed at appropriate times during the pressing process of the bracket, an extra man-hour for setting the brazing material is almost unnecessary.
【図面の簡単な説明】
【図１】従来の金属管とブラケットとのロウ付け方法の
一例を示す斜視図
【図２】本発明の金属管とブラケットとのロウ付け方法
の一例を示す斜視図
【図３】本発明の方法において、ロウ材をセット後で金
属管セット前の平面図
【図４】図３の４−４線断面図
【符号の説明】
１２ 金属管
１４ ブラケット
１４ａ 管保持部
１６ 棒状ロウ材
１８ ロウ材保持孔BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an example of a conventional method of brazing a metal tube and a bracket. FIG. 2 is a perspective view showing an example of a brazing method of a metal tube and a bracket according to the present invention. FIG. 3 is a plan view of the method of the present invention after the brazing material is set and before the metal tube is set. FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG. 16 Bar-shaped brazing material 18 Brazing material holding hole
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−263566（ＪＰ，Ａ) 特開 平２−263592（ＪＰ，Ａ) 特開 平６−339767（ＪＰ，Ａ) 特公 昭63−23877（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 1/14 B23K 1/18 F16L 3/00 - 3/12 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-263566 (JP, A) JP-A-2-263592 (JP, A) JP-A-6-339767 (JP, A) 23877 (JP, B2) (58) Field surveyed (Int. Cl. 7 , DB name) B23K 1/14 B23K 1/18 F16L 3/00-3/12
Claims (1)
溶接またはプロジェクション溶接により仮固着するとと
もに、前記金属管とブラケットとのロウ付予定部位に棒
状ロウ材を置き、その後、金属管／ブラケット仮固着体
を、加熱炉に搬入してロウ付けを行うに際して、 前記ブラケットのプレス加工時に、ブラケットにロウ材
保持孔を形成するとともに、該ロウ材保持孔に前記棒状
ロウ材を圧入して保持させることを、特徴とする金属管
とブラケットとのロウ付け方法(57) [Claims 1] A metal pipe is temporarily fixed to a pipe holding portion of a bracket by TIG welding or projection welding, and a bar-shaped brazing material is put on a portion where the metal pipe and the bracket are to be brazed. Then, when the metal tube / bracket temporary fixed body is carried into a heating furnace and brazed, when the bracket is pressed, a brazing material holding hole is formed in the bracket and the brazing material holding hole is formed in the brazing material holding hole. A method of brazing a metal pipe and a bracket, wherein a rod-shaped brazing material is pressed and held.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6479094A JP3513775B2 (en) | 1994-04-01 | 1994-04-01 | Brazing method of metal tube and bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6479094A JP3513775B2 (en) | 1994-04-01 | 1994-04-01 | Brazing method of metal tube and bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07276041A JPH07276041A (en) | 1995-10-24 |
| JP3513775B2 true JP3513775B2 (en) | 2004-03-31 |
Family
ID=13268389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6479094A Expired - Fee Related JP3513775B2 (en) | 1994-04-01 | 1994-04-01 | Brazing method of metal tube and bracket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3513775B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6249750B2 (en) * | 2013-12-10 | 2017-12-20 | リンナイ株式会社 | Heat exchanger |
| JP6607793B2 (en) * | 2016-01-20 | 2019-11-20 | 株式会社不二工機 | Electrically driven valve and manufacturing method thereof |
| CN105729006A (en) * | 2016-03-25 | 2016-07-06 | 赵士立 | Electric heating pipe grip used for welding |
-
1994
- 1994-04-01 JP JP6479094A patent/JP3513775B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07276041A (en) | 1995-10-24 |
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