JP2686573B2 - Ring-shaped brazing material manufacturing method - Google Patents
Ring-shaped brazing material manufacturing methodInfo
- Publication number
- JP2686573B2 JP2686573B2 JP3157023A JP15702391A JP2686573B2 JP 2686573 B2 JP2686573 B2 JP 2686573B2 JP 3157023 A JP3157023 A JP 3157023A JP 15702391 A JP15702391 A JP 15702391A JP 2686573 B2 JP2686573 B2 JP 2686573B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing material
- ring
- shaped
- shaped brazing
- aluminum
- 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
- Metal Extraction Processes (AREA)
- Ceramic Products (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、たとえばアルミニウ
ム製熱交換器やアルミニウム製自動車用吸気マニホルド
を製造するさいの部品どうしのろう付に用いるリング状
ろう材の製造方法に関し、さらに詳しくいえば、たとえ
ば所定長さの筒状端部を有する第１アルミニウム材と、
この筒状端部を差し込む孔を有する第２アルミニウム材
とを、第１アルミニウム材の筒状端部を第２アルミニウ
ム材の孔内に差し込むとともに、筒状端部にリング状ろ
う材を嵌め被せ、置きろう方式により両アルミニウム材
をろう付するのに用いられるリング状ろう材を製造する
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a ring-shaped brazing filler metal used for brazing components such as aluminum heat exchangers and aluminum intake manifolds for automobiles. For example, a first aluminum material having a tubular end portion of a predetermined length,
The second aluminum material having a hole for inserting the tubular end portion is inserted into the hole of the second aluminum material, and the tubular end portion is fitted with a ring-shaped brazing material. The present invention relates to a method for producing a ring-shaped brazing material used for brazing both aluminum materials by a placement brazing method.
【０００２】この明細書において、「アルミニウム」と
いう語には、純アルミニウムの他にアルミニウム合金を
含むものとする。[0002] In this specification, the term "aluminum" shall include aluminum alloys in addition to pure aluminum.
【０００３】[0003]
【従来の技術】従来、この種リング状ろう材は、焼鈍が
施されて質別ＯとなされたＡｌ−Ｓｉ系合金からなる線
状ろう材に曲げ加工を施してリング状に成形することに
よって製造されていた。この方法において、素材とし
て、焼鈍が施されて質別Ｏとなされた線状ろう材を用い
るのは、曲げ加工のさいのスプリングバックの発生を防
止して加工性を高めるためである。2. Description of the Related Art Conventionally, this kind of ring-shaped brazing material has been obtained by bending a linear brazing material made of an Al--Si alloy which is annealed to form O and is formed into a ring shape. It was manufactured. In this method, the linear brazing material that has been annealed and has a temper of O is used as a material in order to prevent the occurrence of springback during bending and improve workability.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
方法で製造されたリング状ろう材を用いてろう付を行う
と、溶融ろうの流動性が低下し、その結果ろう付性が悪
くなってろう付部にろう付欠陥が生じるという問題があ
った。However, when brazing is performed using the ring-shaped brazing filler metal produced by the conventional method, the fluidity of the molten brazing material is lowered and, as a result, the brazing ability is deteriorated. There is a problem that a brazing defect occurs in the joint.
【０００５】この発明の目的は、上記問題を解決したリ
ング状ろう材の製造方法を提供することにある。An object of the present invention is to provide a method for manufacturing a ring-shaped brazing material which solves the above problems.
【０００６】[0006]
【課題を解決するための手段】この発明によるリング状
ろう材の製造方法は、焼鈍が施されて質別Ｏとなされた
Ａｌ−Ｓｉ系合金からなるろう材に、加工度２０％以上
の冷間加工を施し、ついで曲げ加工を施してリング状に
成形することを特徴とするものである。In the method for manufacturing a ring-shaped brazing filler metal according to the present invention, annealing is performed to give a temper O.
A brazing material made of an Al-Si alloy is subjected to cold working with a working ratio of 20% or more, and then subjected to bending to be formed into a ring shape.
【０００７】上記において、ろう材に曲げ加工を施して
リング状に成形する前に、加工度２０％以上の冷間加工
を施すのは、次の理由による。すなわち、ろう材に曲げ
加工を施してリング状に成形するさいの加工度は、製造
すべきリング状ろう材の直径によりそれぞれ異なること
になる。この曲げ加工のさいの加工度が２０％以上であ
れば問題はないが、２０％未満であると、このリング状
ろう材を用いてろう付を行った場合、ろう付時の加熱に
よりろう材の再結晶粒が粗大化し、その結果溶融したろ
う材の流動性が悪化する。ところが、予め加工度２０％
以上の冷間加工を施しておくと、その後の曲げ加工のさ
いの加工度が２０％以上および２０％未満のいずれの場
合にも、ろう付時の加熱によるろう材の再結晶粒の粗大
化およびこれに起因する溶融ろうの流動性の低下を防止
できる。ところが、曲げ加工を施す前の冷間加工の加工
度が２０％未満であると、このような効果は得られな
い。したがって、曲げ加工を施す前の冷間加工の加工度
は２０％以上に限定すべきである。In the above, the reason why the cold working with a working rate of 20% or more is performed before the brazing material is bent to be formed into a ring shape is as follows. That is, when the brazing filler metal is bent to form a ring ,
Different depending on the diameter of the ring-shaped brazing material
become. When the bending degree is 20% or more
If there is no problem if it is less than 20%, this ring shape
When brazing is performed using a brazing material, it can be used for heating during brazing.
The recrystallized grains of the brazing material become coarser, and as a result, the fluidity of the molten brazing material deteriorates. However, the degree of processing is 20% in advance
If you leave subjected to cold working over, subsequent bending
When the degree of processing is 20% or more and less than 20%
Also in this case, it is possible to prevent coarsening of recrystallized grains of the brazing filler metal due to heating during brazing and a decrease in the fluidity of the molten brazing resulting therefrom. However, if the working ratio of the cold working before bending is less than 20%, such an effect cannot be obtained. Therefore, the workability of cold working before bending should be limited to 20% or more.
【０００８】また、リング状ろう材を製造するための素
材であるＡｌ−Ｓｉ系合金からなるろう材としては、線
状、棒状、板状のものなどが用いられる。線状および棒
状のろう材の場合、たとえば断面減少率が２０％以上と
なる冷間引き抜き加工を施した後、曲げ加工を施してリ
ング状に成形する。また、板状ろう材の場合、圧化率が
２０％以上の冷間圧延加工を施した後短冊状に切断し、
ついで曲げ加工を施してリング状に成形する。Further, as the brazing material made of an Al-Si alloy, which is a material for manufacturing the ring-shaped brazing material, linear, rod-shaped or plate-shaped brazing material is used. In the case of a wire-shaped or rod-shaped brazing material, for example, it is cold-drawn so that the cross-section reduction rate is 20% or more, and then bent to be formed into a ring shape. Further, in the case of a plate-shaped brazing material, cold rolling with a compression rate of 20% or more is performed, and then cut into strips,
Then, it is bent to form a ring.
【０００９】さらに、この発明の方法によって製造され
たリング状ろう材は、アルミニウム鋳造品どうし、アル
ミニウム展伸材どうし、アルミニウム鋳造品とアルミニ
ウム展伸材とのろう付などに用いられる。Further, the ring-shaped brazing material produced by the method of the present invention is used for brazing aluminum cast products, aluminum wrought products, aluminum cast products and aluminum wrought products, and the like.
【００１０】[0010]
【実施例】次に、この発明の実施例を比較例とともに説
明する。EXAMPLES Next, examples of the present invention will be described together with comparative examples.
【００１１】実施例１ Ａｌ−８．５wt％Ｓｉ合金よりなる断面円形の線状ろう
材に、４００℃×１時間の条件で焼鈍処理を施して質別
Ｏとしておいた。ついで、この線状ろう材に断面減少率
が２０％となるように冷間引き抜き加工を施し、直径２
ｍｍとした。その後、この線状ろう材に曲げ加工を施
し、図１に示すように、外径４３．４ｍｍのリング状ろ
う材(1) を製造した。Example 1 A linear brazing material made of an Al-8.5 wt% Si alloy and having a circular cross section was annealed at 400 ° C. for 1 hour to give a quality O. Next, this wire brazing material is cold drawn so that the cross-sectional reduction rate is 20%, and the diameter is 2
mm. Then, the linear brazing material was subjected to bending to manufacture a ring-shaped brazing material (1) having an outer diameter of 43.4 mm as shown in FIG.
【００１２】実施例２ Ａｌ−１０wt％Ｓｉ合金よりなる断面円形の線状ろう材
を用いた他は、上記実施例１と同様にしてリング状ろう
材を製造した。Example 2 A ring-shaped brazing material was manufactured in the same manner as in Example 1 except that a linear brazing material made of an Al-10 wt% Si alloy and having a circular cross section was used.
【００１３】実施例３ Ａｌ−８．５wt％Ｓｉ合金よりなる板状ろう材に、４０
０℃×１時間の条件で焼鈍処理を施して質別Ｏとしてお
いた。ついで、この板状ろう材に圧下率が２０％となる
ように冷間圧延加工を施して厚さ２ｍｍとした。その
後、この板状ろう材を切断して幅４ｍｍの短冊状とし、
さらに短冊状ろう材に曲げ加工を施して、図２に示すよ
うに、外径４３．４ｍｍのリング状ろう材(2) を製造し
た。Example 3 A plate-shaped brazing material made of Al-8.5 wt% Si alloy
Annealing treatment was performed under the condition of 0 ° C. × 1 hour, and the quality was set to O. Then, the plate-shaped brazing material was cold-rolled so that the rolling reduction was 20%, and the thickness was 2 mm. After that, the plate-shaped brazing material is cut into a strip shape with a width of 4 mm,
Further, the strip-shaped brazing material was subjected to bending to manufacture a ring-shaped brazing material (2) having an outer diameter of 43.4 mm as shown in FIG.
【００１４】実施例４ Ａｌ−１０wt％Ｓｉ合金よりなる板状ろう材を用いた他
は、上記実施例３と同様にしてリング状ろう材を製造し
た。Example 4 A ring-shaped brazing material was manufactured in the same manner as in Example 3 except that a plate-shaped brazing material made of Al-10 wt% Si alloy was used.
【００１５】比較例１ Ａｌ−８．５wt％Ｓｉ合金よりなる断面円形の直径２ｍ
ｍの線状ろう材に、４００℃×１時間の条件で焼鈍処理
を施して質別Ｏとしておいた。ついで、この線状ろう材
に曲げ加工を施して外径４３．４ｍｍのリング状ろう材
を製造した。COMPARATIVE EXAMPLE 1 A circular cross section of Al-8.5 wt% Si alloy having a diameter of 2 m.
The linear brazing material of m was annealed under the condition of 400 ° C. × 1 hour and set to be temper O. Then, the linear brazing material was subjected to bending to manufacture a ring-shaped brazing material having an outer diameter of 43.4 mm.
【００１６】比較例２ Ａｌ−１０wt％Ｓｉ合金よりなる線状ろう材を用いた他
は、上記比較例１と同様にしてリング状ろう材を製造し
た。Comparative Example 2 A ring-shaped brazing material was manufactured in the same manner as in Comparative Example 1 except that the linear brazing material made of Al-10 wt% Si alloy was used.
【００１７】比較例３ Ａｌ−８．５wt％Ｓｉ合金よりなる厚さ２ｍｍの板状ろ
う材に、４００℃×１時間の条件で焼鈍処理を施して質
別Ｏとしておいた。ついで、この板状ろう材を切断して
幅４ｍｍのストリップ状とし、さらにストリップ状ろう
材に曲げ加工を施して外径４３．４ｍｍのリング状ろう
材を製造した。Comparative Example 3 A plate-like brazing material made of Al-8.5 wt% Si alloy and having a thickness of 2 mm was annealed at 400 ° C. for 1 hour and set as a quality O. Next, the plate-shaped brazing material was cut into a strip-shaped brazing material having a width of 4 mm, and the strip-shaped brazing material was bent to manufacture a ring-shaped brazing material having an outer diameter of 43.4 mm.
【００１８】比較例４ Ａｌ−１０wt％Ｓｉ合金よりなる板状ろう材を用いた他
は、上記比較例３と同様にしてリング状ろう材を製造し
た。Comparative Example 4 A ring-shaped brazing material was manufactured in the same manner as in Comparative Example 3 except that a plate-shaped brazing material made of Al-10 wt% Si alloy was used.
【００１９】評価試験 以下、上記実施例１〜４および比較例１〜４のリング状
ろう材の評価試験について、図３を参照して説明する。Evaluation Test An evaluation test of the ring-shaped brazing filler metals of Examples 1 to 4 and Comparative Examples 1 to 4 will be described below with reference to FIG.
【００２０】JIS Ａ６０６３合金を用いて第１および第
２の２本のアルミニウム押出管(10)(20)をつくり、第１
アルミニウム押出管(10)の端部にそれぞれ段部(11)(12)
を介して２つの拡管部(13)(14)を形成しておいた。つい
で、第２アルミニウム押出管(20)に上記実施例１のリン
グ状ろう材(1) を嵌め被せるとともに、この管(20)の端
部を第１の管(10)の内側の拡管部(13)内に嵌め込んだ。
そして、炉中において、露点−１０℃以下、酸素濃度３
０００±１０００ｐｐｍの酸素含有窒素ガス雰囲気中で
５９５〜６００℃で３分間、または６１０〜６１５℃で
３分間加熱して両管(10)(20)のろう付を行い、ろう付性
を調べた。First and second aluminum extruded pipes (10) and (20) were made from JIS A6063 alloy, and the first
Steps (11) (12) at the ends of the aluminum extruded pipe (10)
Two tube expansion parts (13) and (14) were formed via the. Then, the second aluminum extruded pipe (20) is fitted with the ring-shaped brazing material (1) of the first embodiment, and the end portion of the pipe (20) is expanded inside the first pipe (10) ( 13) It was fitted inside.
Then, in the furnace, the dew point is −10 ° C. or lower and the oxygen concentration is 3
Both tubes (10) and (20) were brazed by heating at 595 to 600 ° C. for 3 minutes or at 610 to 615 ° C. for 3 minutes in a nitrogen gas atmosphere containing 000 ± 1000 ppm of oxygen, and the brazing property was examined. .
【００２１】また、実施例２〜４および比較例１〜４の
リング状ろう材についても、上記と同様なろう付を行
い、ろう付性を調べた。これらの結果を表１にまとめて
示す。Further, the ring-shaped brazing materials of Examples 2 to 4 and Comparative Examples 1 to 4 were also brazed in the same manner as above, and the brazing property was examined. These results are summarized in Table 1.
【００２２】[0022]
【表１】 [Table 1]
【００２３】上記表１において、○はろう切れのない良
好なフィレットが全周にわたって形成されていることを
表し、△は一部に欠陥が存在するフィレットが全周にわ
たって形成されていることを表し、×は溶融ろうの流動
性が悪く、十分なフィレットが形成されていないことを
表す。In Table 1 above, ∘ indicates that a good fillet having no wax break was formed over the entire circumference, and Δ indicates that a fillet partially defective was formed over the entire circumference. , X represents that the fluidity of the molten brazing material is poor and a sufficient fillet is not formed.
【００２４】[0024]
【発明の効果】この発明の方法によれば、上述のように
して、ろう付のさいの溶融ろうの流動性が良好で、その
結果ろう付部に欠陥の生じることのないリング状ろう材
を製造することができる。According to the method of the Effect of the Invention The present invention, as described above, has good flowability of the molten filler metal of the brazing again, the
As a result, it is possible to manufacture a ring-shaped brazing material without causing defects in the brazed portion.
【図１】この発明の実施例１の方法で製造されたリング
状ろう材の斜視図である。FIG. 1 is a perspective view of a ring-shaped brazing material manufactured by a method according to a first embodiment of the present invention.
【図２】この発明の実施例３の方法で製造されたリング
状ろう材の斜視図である。FIG. 2 is a perspective view of a ring-shaped brazing material manufactured by the method of Embodiment 3 of the present invention.
【図３】この発明の実施例１の方法によって製造された
リング状ろう材の評価試験の方法を示す縦断面図であ
る。FIG. 3 is a vertical sectional view showing a method of evaluation test of the ring-shaped brazing material manufactured by the method of Example 1 of the present invention.
１ リング状ろう材 ２ リング状ろう材 1 Ring-shaped brazing material 2 Ring-shaped brazing material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 白山 三智雄 堺市海山町６丁224番地 昭和アルミニ ウム株式会社内 (72)発明者 大坪 武 堺市海山町６丁224番地 昭和アルミニ ウム株式会社内 (56)参考文献 特開 平２−247363（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michio Shirayama 6-224 Kaiyamacho, Sakai City, Showa Aluminum Co., Ltd. (72) Inventor Takeshi Otsubo 6-224, Kaiyamacho, Sakai City, Showa Aluminum Co., Ltd. (56) Reference JP-A-2-247363 (JP, A)
Claims (1)
Ｓｉ系合金からなるろう材に、加工度２０％以上の冷間
加工を施し、ついで曲げ加工を施してリング状に成形す
ることを特徴とするリング状ろう材の製造方法。1. An Al- annealed material having a temper O
A method for producing a ring-shaped brazing material, which comprises subjecting a brazing material made of a Si-based alloy to cold working with a working ratio of 20% or more, and then bending to form a ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3157023A JP2686573B2 (en) | 1991-06-27 | 1991-06-27 | Ring-shaped brazing material manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3157023A JP2686573B2 (en) | 1991-06-27 | 1991-06-27 | Ring-shaped brazing material manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH058086A JPH058086A (en) | 1993-01-19 |
| JP2686573B2 true JP2686573B2 (en) | 1997-12-08 |
Family
ID=15640498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3157023A Expired - Fee Related JP2686573B2 (en) | 1991-06-27 | 1991-06-27 | Ring-shaped brazing material manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2686573B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011092983A (en) * | 2009-10-30 | 2011-05-12 | Toshiba Carrier Corp | Method for producing heat exchanger, heat exchanger and heat pump type molten metal supplying device |
| CN107617829A (en) * | 2017-10-31 | 2018-01-23 | 珠海格力电器股份有限公司 | Brazing ring and brazing system |
| WO2022137761A1 (en) * | 2020-12-23 | 2022-06-30 | 第一稀元素化学工業株式会社 | Flux-cored ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02247363A (en) * | 1989-03-20 | 1990-10-03 | Furukawa Alum Co Ltd | Production of aluminum alloy stock for forming |
-
1991
- 1991-06-27 JP JP3157023A patent/JP2686573B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH058086A (en) | 1993-01-19 |
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