JPH06344179A - Flux-containing al alloy brazing filter metal - Google Patents
Flux-containing al alloy brazing filter metalInfo
- Publication number
- JPH06344179A JPH06344179A JP13332393A JP13332393A JPH06344179A JP H06344179 A JPH06344179 A JP H06344179A JP 13332393 A JP13332393 A JP 13332393A JP 13332393 A JP13332393 A JP 13332393A JP H06344179 A JPH06344179 A JP H06344179A
- Authority
- JP
- Japan
- Prior art keywords
- flux
- brazing
- component
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルミニウムまたはそ
の合金材のろう付接合に使用されるフラックス含有Ａｌ
合金ろう材に関するものである。FIELD OF THE INVENTION The present invention relates to a flux-containing Al used for brazing aluminum or its alloy material.
The present invention relates to an alloy brazing material.
【０００２】[0002]
【従来の技術】通常、アルミニウムまたはその合金材の
ろう付接合においては、接合部の酸化皮膜を除去してろ
う付性を向上させるためにフラックスが使用される。従
来のフラックスろう付においては、フラックスを懸濁液
にして接合部に塗布する等ろう材とは別途にフラックス
を供給する必要があり、ろう付作業が非常に面倒であっ
た。しかも、供給するフラックス量にバラツキを生じる
うえ、供給量が少ない場合にはろう付不良を起こし、ま
た供給量が多い場合にはろう付品にフラックスが残留し
て製品の外観品質や表面処理性の低下させたり、ろう付
中にフラックスの垂れを生じてろう付炉を汚染する等の
問題があった。2. Description of the Related Art Usually, in brazing of aluminum or its alloy material, a flux is used to remove the oxide film at the joint and improve brazing. In the conventional flux brazing, it is necessary to supply the flux separately from the brazing material such as applying the flux to a suspension to apply it to the joint, and the brazing work is very troublesome. In addition, the amount of flux to be supplied varies, and when the amount of supply is small, brazing failure occurs, and when the amount of supply is large, the flux remains in the brazed product, resulting in product appearance quality and surface treatment properties. Of the brazing furnace, and the flux drips during brazing to contaminate the brazing furnace.
【０００３】そこで、これらの問題点を解決すべく、本
出願人は、Ａｌ、Ｓｉを主体とするろう材成分および弗
化物系フラックス成分を含有するフラックス含有Ａｌ合
金ろう材を開発した（特願平３−３４６９９４号等）。Therefore, in order to solve these problems, the present applicant has developed a flux-containing Al alloy brazing material containing a brazing material component mainly composed of Al and Si and a fluoride-based flux component (Japanese Patent Application No. 3-346994, etc.).
【０００４】[0004]
【発明が解決しようとする課題】前述のフラックス含有
Ａｌ合金ろう材は、ろう付作業の簡略化、フラックスの
適量供給という点では所期の目的を達成し満足できるも
のであった。また、フラックスとして非腐食性である点
で有利な弗化物系のものが使用され、実施例においても
ＫＦ−ＡｌＦ3 共晶粉末を使用してろうの濡れ拡がりも
概ね良好であった。しかし、ろう付品のさらなる品質向
上のために、ろう付対象物によってはなお一層濡れ拡が
りに優れたフラックス含有Ａｌ合金ろう材が希求されて
いる。The above-described flux-containing Al alloy brazing material has achieved the intended purpose and is satisfactory in terms of simplifying the brazing work and supplying an appropriate amount of flux. Further, those advantageous fluoride-based in that it is non-corrosive as a flux is used, wax wetting spread using KF-AlF 3 eutectic powder also in Example was also generally good. However, in order to further improve the quality of the brazed product, a flux-containing Al alloy brazing material that is even more excellent in wet spread is desired depending on the brazing object.
【０００５】本発明は、ろう付作業の簡略化やフラック
スの適量供給はもとより、従前のフラックス含有Ａｌ合
金ろう材よりもさらにろうの濡れ拡がり性に優れたフラ
ックス含有Ａｌ合金ろう材を提供しようとするものであ
る。The present invention intends to provide a flux-containing Al alloy brazing material which is superior to the conventional flux-containing Al alloy brazing material in not only simplification of brazing work and supply of an appropriate amount of flux, but also the wettability and spreadability of the brazing material. To do.
【０００６】[0006]
【課題を解決するための手段】本発明のフラックス含有
Ａｌ合金ろう材は、前記目的を達成するために、ろう材
成分としてのＡｌ、Ｓｉおよびフラックス成分を含有す
るフラックス含有Ａｌ合金ろう材であって、前記ろう材
成分中のＳｉ含有量が３〜１５wt％であり、前記フラッ
クス成分が、ＫＦおよびＡｌＦ3 と、ＬｉＦまたはＣｓ
Ｆの少なくとも一方とを含み、ＫＦおよびＡｌＦ3 の合
計量とＬｉＦおよびＣｓＦの合計量とが重量比で９８．
５：１．５〜８２：１８の範囲で配合された弗化物系フ
ラックスであり、前記ろう材成分と前記フラックス成分
とが重量比で９９．９：０．１〜７０：３０の割合で配
合され、かつ密度が理論値の９０％以上であることを特
徴とするものである。The flux-containing Al alloy brazing material of the present invention is a flux-containing Al alloy brazing material containing Al, Si as a brazing material component and a flux component in order to achieve the above object. And the Si content in the brazing filler metal component is 3 to 15 wt%, and the flux component is KF and AlF 3 and LiF or Cs.
And at least one of F, and the total amount of KF and AlF 3 and the total amount of LiF and CsF are 98.
It is a fluoride-based flux compounded in a range of 5: 1.5 to 82:18, and the brazing material component and the flux component are compounded in a weight ratio of 99.9: 0.1 to 70:30. And the density is 90% or more of the theoretical value.
【０００７】本発明のフラックス含有Ａｌ合金ろう材に
おいて、前記ろう材成分は接合用ろう材として機能する
ものであり、ＡｌおよびＳｉの他にろう材の機能向上の
ために任意に添加される金属および不可避不純物が含ま
れていても良い。このろう材成分におけるＳｉ含有量が
３wt％未満または１５wt％を超える場合は、製造された
フラックス含有Ａｌ合金ろう材の液相線が高くなってろ
う付が困難となる。特に、１５wt％を超えると脆くなっ
て所定形状への成形加工も困難となる。したがって、Ｓ
ｉ含有量は前記ろう材成分において３〜１５wt％とする
必要があり、特に好ましいＳｉ含有量の範囲は６〜１２
wt％である。In the flux-containing Al alloy brazing filler metal of the present invention, the brazing filler metal component functions as a brazing filler metal for joining, and in addition to Al and Si, a metal optionally added to improve the function of the brazing filler metal. And unavoidable impurities may be contained. If the Si content in the brazing filler metal component is less than 3 wt% or exceeds 15 wt%, the liquidus line of the produced flux-containing Al alloy brazing filler metal becomes high, and brazing becomes difficult. In particular, if it exceeds 15% by weight, it becomes brittle and it becomes difficult to form it into a predetermined shape. Therefore, S
The i content should be 3 to 15 wt% in the brazing filler metal component, and the particularly preferable Si content range is 6 to 12
wt%.
【０００８】前記フラックス成分としては、ＫＦおよび
ＡｌＦ3 を主体としてこれにＬｉＦまたはＣｓＦのどち
らか一方あるいは両方を加えた弗化物系フラックスを用
いる。ＫＦとＡｌＦ3 とは重量比で４１：５９〜４７：
５３であることが望ましい。これは、ＫＦがこの範囲よ
りも少なくなっても多くなってもフラックス成分の融点
がろう材成分の液相線よりも高くなってしまい、ろう付
が困難となるためである。特に、４５：５５〜４６：５
４の範囲が望ましい。このような範囲にあるＫＦおよび
ＡｌＦ3 としては、これらの単体の混合物の他、これら
の錯体物、４５．８％ＫＦ−５４．２％ＡｌＦ3 の共晶
組成物等を使用できる。前記ＬｉＦおよびＣｓＦはＫＦ
−ＡｌＦ3 の活性度を高めるとともにフラックスの融点
を下げる効果があり、ろう付時の加熱過程において早期
にフラックスを溶融させてろう付部に供給し、酸化物を
除去してろうの濡れ拡がり性を向上させる得る。このよ
うな効果において、ＬｉＦおよびＣｓＦは均等に評価さ
れるものであってどちらか一方が添加されれば足り、両
方を添加する場合はそれぞれ単体で添加する他、錯体
物、共晶組成物として添加しても良い。ＬｉＦおよびＣ
ｓＦの添加量は、ＫＦおよびＡｌＦ3 の合計量とＬｉＦ
およびＣｓＦの合計量との比率が９８．５：１．５より
少なくなると、ＫＦ−ＡｌＦ3 の活性度を向上させる効
果に乏しく、一方８２：１８を超えて多くなるとＫＦ−
ＡｌＦ3 の活性度は上昇するがフラックスの融点も上が
ってしまい、早期にフラックスが供給されなくなり、却
ってろうの濡れ拡がり性を低下させることになる。した
がって、ＫＦおよびＡｌＦ3 の合計量とＬｉＦおよびＣ
ｓＦの合計量との比率を９８．５：１．５〜８２：１８
とする必要があり、特に９８：２〜９５：５の範囲が好
ましい。As the above-mentioned flux component, a fluoride-based flux containing KF and AlF 3 as a main component and either one or both of LiF and CsF added thereto is used. The weight ratio of KF and AlF 3 is 41:59 to 47 :.
53 is desirable. This is because the melting point of the flux component becomes higher than the liquidus line of the brazing filler metal component and the brazing becomes difficult even if KF is smaller or larger than this range. In particular, 45:55 to 46: 5
A range of 4 is desirable. As KF and AlF 3 in such a range, a mixture of these simple substances, a complex thereof, a eutectic composition of 45.8% KF-54.2% AlF 3 and the like can be used. The LiF and CsF are KF
-It has the effect of increasing the activity of AlF 3 and lowering the melting point of the flux. In the heating process during brazing, the flux is melted early and supplied to the brazing part, and oxides are removed to spread the wetting and spreading property of the brazing filler metal. Get better. In such an effect, LiF and CsF are evaluated equally, and it suffices if either one is added, and if both are added, they are added individually, or as a complex or eutectic composition. You may add. LiF and C
The amount of sF added is the total amount of KF and AlF 3 and LiF
When the ratio with respect to the total amount of CsF and CsF is less than 98.5: 1.5, the effect of improving the activity of KF-AlF 3 is poor, while when it exceeds 82:18, the ratio is high.
Although the activity of AlF 3 rises, the melting point of the flux also rises, and the flux is no longer supplied at an early stage, which rather reduces the wet spreadability of the wax. Therefore, the total amount of KF and AlF 3 and LiF and C
The ratio with the total amount of sF is 98.5: 1.5 to 82:18.
The range of 98: 2 to 95: 5 is particularly preferable.
【０００９】また、フラックス含有Ａｌ合金ろう材中の
ろう材成分およびフラックス成分の配合割合は重量比で
９９．９：０．１〜７０：３０の範囲に規定されなけれ
ばならない。フラックス成分が９９．９：０．１よりも
少なくなると、十分なフラックス効果が発現せずろうの
濡れが悪くなってろう付が困難となり、一方７０：３０
を超えてフラックスが多くなると、ろう材成分およびフ
ラックス成分を混合しての固形化が困難となりろう材そ
のものの製造が困難となるからである。ろう材成分およ
びフラックス成分の好ましい配合割合は９９．９：０．
１〜８５：１５であり、特に好ましくは９８：２〜９
０：１０である。In addition, the blending ratio of the brazing material component and the flux component in the flux-containing Al alloy brazing material must be specified in the range of 99.9: 0.1 to 70:30 by weight. If the flux component is less than 99.9: 0.1, a sufficient flux effect will not be exhibited and the wetting of the brazing will be poor, making brazing difficult, while 70:30.
If the amount of flux exceeds the above range, it is difficult to mix the brazing material component and the flux component to solidify, and it becomes difficult to manufacture the brazing material itself. The preferable mixing ratio of the brazing material component and the flux component is 99.9: 0.
1 to 85:15, particularly preferably 98: 2 to 9
It is 0:10.
【００１０】本発明に係るフラックス含有Ａｌ合金ろう
材は、一般には、Ａｌ粉末、Ｓｉ粉末、Ａｌ−Ｓｉ合金
粉末等のろう材成分粉末およびＫＦ−ＡｌＦ3 粉末、Ｌ
ｉＦ粉末、ＣｓＦ粉末等のフラックス成分粉末を加えて
混合し、熱間プレス等により圧粉固化して製造される
が、通常、ろう材の密度は内部空気の残留により各材料
粉末単体のそれぞれから計算される理論値よりも小さく
なる。本発明においては、理論値に対して９０％以上で
あることを要する。フラックス含有Ａｌ合金ろう材の密
度が９０％未満では、前記材料粉末が固化しているもの
の、内部までポア連通して脆いものとなっている危険性
があり、接合材に適した形状への二次成形加工も困難
で、実際上フラックス含有Ａｌ合金ろう材としての機能
に劣るものとなる。特に好ましくは、フラックス含有Ａ
ｌ合金ろう材の密度はこれを理論値の９５％以上とする
のが良い。また、前記ろう材成分粉末およびフラックス
成分粉末は、これらの均一混合およびろう材組織の緻密
化を図るために微粉砕しておくのが好ましく、例えばＡ
ｌ粉末は平均粒径４４μｍ以下、Ｓｉ粉末は平均粒径５
μｍ以下、フラックス粉末は平均粒径３０μｍ以下の微
粉末が好ましい。The flux-containing Al alloy brazing filler metal according to the present invention is generally a brazing filler metal component powder such as Al powder, Si powder, Al-Si alloy powder, and KF-AlF 3 powder, L.
Flux component powders such as iF powder and CsF powder are added and mixed, and pressed powder is solidified by hot pressing, etc., but the density of the brazing filler metal is usually from each of the individual material powders due to residual internal air. It is smaller than the calculated theoretical value. In the present invention, it is required to be 90% or more of the theoretical value. When the density of the flux-containing Al alloy brazing material is less than 90%, although the material powder is solidified, there is a risk that it will be brittle due to pore communication to the inside. Subsequent molding processing is also difficult, and the function as a flux-containing Al alloy brazing material is actually inferior. Particularly preferably, the flux-containing A
The density of the 1-alloy brazing material is preferably 95% or more of the theoretical value. Further, the brazing material powder and the flux material powder are preferably finely pulverized in order to uniformly mix them and densify the brazing material structure.
1 powder has an average particle size of 44 μm or less, and Si powder has an average particle size of 5 μm.
It is preferable that the flux powder is fine powder having an average particle diameter of 30 μm or less.
【００１１】[0011]
【作用】本発明のフラックス含有Ａｌ合金ろう材におけ
るフラックス成分には、ＫＦおよびＡｌＦ3 を主体とし
てＬｉＦまたはＣｓＦの少なくとも一方が添加されてい
るため、ＫＦおよびＡｌＦ3 のみよりも活性度が向上す
る。また、前記ＬｉＦおよびＣｓＦは、ＫＦおよびＡｌ
Ｆ3 の合計量とＬｉＦおよびＣｓＦの合計量とが重量比
で９８．５：１．５〜８２：１８の範囲で配合されてい
るため、フラックス成分全体の融点を下げる効果があ
る。The flux component of the flux-containing Al alloy brazing material of the present invention contains KF and AlF 3 as a main component and at least one of LiF and CsF, so that the activity is improved as compared with KF and AlF 3 alone. . Further, the LiF and CsF are KF and Al.
Since the total amount of F 3 and the total amount of LiF and CsF are mixed in a weight ratio range of 98.5: 1.5 to 82:18, it has an effect of lowering the melting point of the entire flux component.
【００１２】このようなフラックス成分が含有されたフ
ラックス含有Ａｌ合金ろう材がろう付時に加熱される
と、フラックス成分は早くから溶融が始まってろう付部
に広く供給されるとともに優れた活性により酸化物が確
実に除去されるため、フラックス成分に遅れて溶融した
Ａｌ−Ｓｉ系のろう材成分は接合部に十分に濡れ拡が
り、良好なろう付接合が達成される。When a flux-containing Al alloy brazing material containing such a flux component is heated during brazing, the flux component begins to melt early and is widely supplied to the brazing part, and due to its excellent activity, oxides are produced. Is reliably removed, the Al-Si based brazing filler metal component melted after the flux component is sufficiently wet and spread in the joint portion, and good brazing joint is achieved.
【００１３】[0013]
【実施例】次に、本発明に係るフラックス含有Ａｌ合金
ろう材の具体的実施例について、図面を参照しつつ説明
する。EXAMPLES Next, specific examples of the flux-containing Al alloy brazing material according to the present invention will be described with reference to the drawings.
【００１４】本実施例においては、ろう材成分として平
均粒径４４μｍのＡｌ粉末および平均粒径１μｍのＳｉ
粉末、フラックス成分として平均粒径３０μｍの４５．
８％ＫＦ−５４．２％ＡｌＦ3 の共晶組成物粉末、Ｌｉ
Ｆ粉末およびＣｓＦ粉末を使用した。In this embodiment, Al powder having an average particle size of 44 μm and Si having an average particle size of 1 μm are used as brazing filler metal components.
45. Powder having an average particle size of 30 μm as a flux component
8% KF-54.2% AlF 3 eutectic composition powder, Li
F powder and CsF powder were used.
【００１５】まず、前記材料粉末を後掲の表１の各Ｎ
ｏ．に示す割合で配合して混合粉末を調製した。次い
で、外径３インチ×長さ２００mmの円筒形のＡｌ容器に
前記混合粉末を充填して５００℃の炉中に配置し、炉内
を１mmHg以下の真空にして脱ガスした。さらに、４８０
℃で熱間プレスを用いて最大圧力４００トンにて熱圧成
形することにより、混合粉末は圧粉されて固形化し、所
定組成のフラックス含有Ａｌ合金ろう材となった。さら
に、Ａｌ容器の部分を切削除去後、熱間押出機により温
度５００℃で厚さ２mm×幅４mmの平板に押出成形した。First, the above-mentioned material powder is added to each N in Table 1 below.
o. A mixed powder was prepared by mixing in the proportions shown in. Next, the mixed powder was filled in a cylindrical Al container having an outer diameter of 3 inches and a length of 200 mm, the mixed powder was placed in a furnace at 500 ° C., and the inside of the furnace was evacuated to a vacuum of 1 mmHg or less for degassing. Furthermore, 480
By hot-pressing at a maximum pressure of 400 tons using a hot press at 0 ° C., the mixed powder was pressed and solidified into a flux-containing Al alloy brazing material having a predetermined composition. Further, after removing the Al container portion by cutting, it was extruded by a hot extruder at a temperature of 500 ° C. into a flat plate having a thickness of 2 mm and a width of 4 mm.
【００１６】これらのフラックス含有Ａｌ合金ろう材に
つき、押出成形性、密度および濡れ拡がり性について、
次の方法で評価した。Extrusion formability, density and wet spreadability of these flux-containing Al alloy brazing filler metals are
It evaluated by the following method.
【００１７】〔押出成形性〕平板に押出したときの状況
を観察した。[Extrusion Moldability] The state of extrusion into a flat plate was observed.
【００１８】〔密度〕押出成形性が良好であったフラッ
クス含有Ａｌ合金ろう材について、各材料から計算され
た理論密度に対する割合を求めた。[Density] With respect to the flux-containing Al alloy brazing material having good extrusion moldability, the ratio to the theoretical density calculated from each material was determined.
【００１９】〔濡れ拡がり性〕押出成形性が良好であっ
たフラックス含有Ａｌ合金ろう材について評価した。各
フラックス含有Ａｌ合金ろう材を厚さ２mm×幅４mm×長
さ５mmに切出し、図１（Ａ）に示されているように、こ
の切出片（１）をＡ３００３Ａｌ合金からなる厚さ２mm
×幅５０mm×長さ５０mmの平板（２）上に置き、これを
Ｎ2 ガス雰囲気中および大気中で６００℃×１分間加熱
した。そして、図１（Ｂ）に示されているように、濡れ
拡がったろう材（３）について、板材（３）の幅方向に
おける寸法（ａ）と長さ方向における寸法（ｂ）とを測
定し、（ａ）と（ｂ）の平均値をもって濡れ拡がり性を
評価した。[Wet Spreadability] The flux-containing Al alloy brazing material having good extrusion moldability was evaluated. Each flux-containing Al alloy brazing material is cut into a thickness of 2 mm, a width of 4 mm, and a length of 5 mm, and as shown in FIG. 1 (A), the cut piece (1) is made of an A3003 Al alloy and has a thickness of 2 mm.
It was placed on a flat plate (2) having a width of 50 mm and a length of 50 mm, and this was heated in a N 2 gas atmosphere and in the air at 600 ° C. for 1 minute. Then, as shown in FIG. 1 (B), the dimension (a) in the width direction and the dimension (b) in the length direction of the plate material (3) are measured for the brazing filler metal (3) that has spread wet. The wet spreadability was evaluated by the average value of (a) and (b).
【００２０】これらの評価結果を表１に併せて示す。The results of these evaluations are also shown in Table 1.
【００２１】[0021]
【表１】 表１の結果から明らかなように、本発明品のろう材Ｎ
ｏ．２、３、６〜１０，１３，１４はいずれも濡れ拡が
り性に優れるものであった。[Table 1] As is clear from the results in Table 1, the brazing filler metal N of the present invention
o. All of 2, 3, 6 to 10, 13, and 14 were excellent in wet spreadability.
【００２２】これらに対して、フラックス成分の組成は
本発明の範囲内であるがＳｉ含有量の少ないろう材Ｎ
ｏ．１はろう材の溶融が不十分でろうの濡れ拡がりが悪
く、Ｓｉ含有量の多いＮｏ．４は脆くて押出成形時に割
れてしまい濡れ拡がり性を評価するに至らなかった。On the other hand, the composition of the flux component is within the range of the present invention, but the brazing filler metal N containing a small amount of Si is used.
o. No. 1 is No. 1 having a large Si content because the brazing filler metal is not sufficiently melted and the wetting and spreading of the brazing material is poor. No. 4 was brittle and cracked during extrusion molding, and the wet spreadability could not be evaluated.
【００２３】また、フラックス成分の組成に関して、本
発明品Ｎｏ．３等と同量のフラックス成分が配合されて
いてもＬｉＦまたはＣｓＦが全く配合されていないＮ
ｏ．５は濡れ拡がり性が劣り、ＬｉＦが過剰に配合され
たＮｏ．１１はフラックス成分全体の融点が高くなって
フラックスがろう付部に供給されず、ろうが全く濡れ拡
がらなかった。Regarding the composition of the flux component, the product No. N containing no LiF or CsF at all even if the same amount of flux component as that of 3 etc.
o. No. 5 was inferior in wettability and spreadability, and No. 5 containing LiF excessively. In No. 11, the melting point of the entire flux component was high and the flux was not supplied to the brazing part, and the brazing did not spread at all.
【００２４】また、ろう材成分とフラックス成分との配
合比率に関して、フラックス成分を含有しないろう材Ｎ
ｏ．１２はろうが全く濡れ拡がらず、フラックス成分が
過剰に含まれるろう材Ｎｏ．１５は押出成形時に割れて
しまい、ろう付性を評価するに至らなかった。Regarding the blending ratio of the brazing material component and the flux component, the brazing material N containing no flux component is used.
o. No. 12 is a brazing material No. 12 in which the brazing material does not spread at all and the flux component is excessively contained. No. 15 was cracked during extrusion molding, and the brazing property could not be evaluated.
【００２５】[0025]
【発明の効果】以上のように、本発明のフラックス含有
Ａｌ合金ろう材は、ろう材成分としてのＡｌ、Ｓｉおよ
びフラックス成分を含有するフラックス含有Ａｌ合金ろ
う材であって、前記ろう材成分中のＳｉ含有量が３〜１
５wt％であり、前記フラックス成分が、ＫＦおよびＡｌ
Ｆ3 と、ＬｉＦまたはＣｓＦの少なくとも一方とを含
み、ＫＦおよびＡｌＦ3 の合計量とＬｉＦおよびＣｓＦ
の合計量とが重量比で９８．５：１．５〜８２：１８の
範囲で配合された弗化物系フラックスであり、前記ろう
材成分と前記フラックス成分とが重量比で９９．９：
０．１〜７０：３０の割合で配合され、かつ密度が理論
値の９０％以上とされたものであるから、ろう付の際に
は接合部に本発明のろう材を供給すれば、同時に適正な
一定量のフラックスも供給されるため、フラックスを別
途供給する必要がなくろう作業を大幅に簡略化できる。
しかも、使用するフラックス成分は、活性度が高いため
酸化物除去効果が大きく、また融点が低いため加熱過程
の早期に溶融して接合部に広く供給されるため、極めて
ろうの濡れ拡がり性が良い。その結果、同じ濡れ拡がり
を得るためには、従前のフラックス含有Ａｌ合金ろう材
よりもフラックス使用量が少なくて済む。As described above, the flux-containing Al alloy brazing material of the present invention is a flux-containing Al alloy brazing material containing Al and Si as the brazing material components, and a flux component. Si content of 3 to 1
5 wt% and the flux component is KF and Al
F 3 and at least one of LiF and CsF, and the total amount of KF and AlF 3 and LiF and CsF
Is a fluoride-based flux mixed in a weight ratio of 98.5: 1.5 to 82:18, and the brazing filler metal component and the flux component are in a weight ratio of 99.9:
Since it is blended at a ratio of 0.1 to 70:30 and the density is 90% or more of the theoretical value, if the brazing material of the present invention is supplied to the joint during brazing, Since a proper fixed amount of flux is also supplied, it is possible to greatly simplify the work that does not require separate supply of flux.
Moreover, since the flux component used has a high activity, the effect of removing oxides is large, and the melting point of the flux component is low, so that it is melted early in the heating process and widely supplied to the joint, so that the wetting and spreading property of the brazing filler metal is extremely good. . As a result, in order to obtain the same wet spread, the amount of flux used is smaller than that of the conventional flux-containing Al alloy brazing material.
【図１】（Ａ），（Ｂ）は本実施例におけるろうの濡れ
拡がり性の評価方法を説明するための斜視図である。1A and 1B are perspective views for explaining a method for evaluating the wetting and spreading property of a wax in this example.
１、３…フラックス含有Ａｌ合金ろう材 ２…平板 1, 3 ... Flux-containing Al alloy brazing material 2 ... Flat plate
Claims (1)
ラックス成分を含有するフラックス含有Ａｌ合金ろう材
であって、 前記ろう材成分中のＳｉ含有量が３〜１５wt％であり、 前記フラックス成分が、ＫＦおよびＡｌＦ3 と、ＬｉＦ
またはＣｓＦの少なくとも一方とを含み、ＫＦおよびＡ
ｌＦ3 の合計量とＬｉＦおよびＣｓＦの合計量とが重量
比で９８．５：１．５〜８２：１８の範囲で配合された
弗化物系フラックスであり、 前記ろう材成分と前記フラックス成分とが重量比で９
９．９：０．１〜７０：３０の割合で配合され、 かつ密度が理論値の９０％以上であることを特徴とする
フラックス含有Ａｌ合金ろう材。1. A flux-containing Al alloy brazing material containing Al, Si as a brazing material component and a flux component, wherein the Si content in the brazing material component is 3 to 15 wt%, and the flux component is , KF and AlF 3 , and LiF
Or at least one of CsF, and KF and A
A fluoride-based flux in which the total amount of 1F 3 and the total amount of LiF and CsF are mixed in a weight ratio of 98.5: 1.5 to 82:18, and the brazing filler metal component and the flux component are Is 9 by weight
A flux-containing Al alloy brazing material, which is blended in a ratio of 9.9: 0.1 to 70:30 and has a density of 90% or more of a theoretical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13332393A JPH06344179A (en) | 1993-06-03 | 1993-06-03 | Flux-containing al alloy brazing filter metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13332393A JPH06344179A (en) | 1993-06-03 | 1993-06-03 | Flux-containing al alloy brazing filter metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06344179A true JPH06344179A (en) | 1994-12-20 |
Family
ID=15102024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13332393A Pending JPH06344179A (en) | 1993-06-03 | 1993-06-03 | Flux-containing al alloy brazing filter metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06344179A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996030154A1 (en) * | 1995-03-31 | 1996-10-03 | T & N Technology Limited | Joining aluminium articles |
| KR20000047330A (en) * | 1998-12-31 | 2000-07-25 | 신영주 | Flux composition for aluminum brazing and aluminum brazing material containing flux composition |
| GB2357300A (en) * | 1999-12-14 | 2001-06-20 | Ford Global Tech Inc | Flux for brazing an aluminium heat exchanger based on fluorides |
| KR100625090B1 (en) * | 2005-03-02 | 2006-09-20 | 모딘코리아 유한회사 | Adhesive sheet for brazing magnesium alloy and method for brazing magnesium and aluminum alloy |
| CN102423834A (en) * | 2011-09-30 | 2012-04-25 | 河海大学常州校区 | Highly-active soldering flux suitable for stepped brazing of magnesium-aluminum alloy and preparation method of highly-active soldering flux |
| JP2013018048A (en) * | 2011-07-11 | 2013-01-31 | Daiichi Kigensokagaku Kogyo Co Ltd | Flux for brazing aluminum-based material |
| WO2013061843A1 (en) * | 2011-10-26 | 2013-05-02 | 株式会社神戸製鋼所 | Flux composition and brazing sheet |
| CN103648709A (en) * | 2011-07-11 | 2014-03-19 | 第一稀元素化学工业株式会社 | Flux for brazing aluminum materials |
| US9056363B2 (en) | 2008-11-25 | 2015-06-16 | Solvay Fluor Gmbh | Anticorrosive flux |
| KR20150078206A (en) | 2013-12-30 | 2015-07-08 | 한라비스테온공조 주식회사 | Clad of aluminium product for brazing and manufacturing method of heat exchanger using the same |
| CN105618960A (en) * | 2016-03-15 | 2016-06-01 | 南京航空航天大学 | Soldering flux suitable for aluminum steel brazing |
| US9579752B2 (en) | 2010-02-10 | 2017-02-28 | Solvay Fluor Gmbh | Flux forming an insoluble brazing residue |
-
1993
- 1993-06-03 JP JP13332393A patent/JPH06344179A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996030154A1 (en) * | 1995-03-31 | 1996-10-03 | T & N Technology Limited | Joining aluminium articles |
| KR20000047330A (en) * | 1998-12-31 | 2000-07-25 | 신영주 | Flux composition for aluminum brazing and aluminum brazing material containing flux composition |
| GB2357300A (en) * | 1999-12-14 | 2001-06-20 | Ford Global Tech Inc | Flux for brazing an aluminium heat exchanger based on fluorides |
| KR100625090B1 (en) * | 2005-03-02 | 2006-09-20 | 모딘코리아 유한회사 | Adhesive sheet for brazing magnesium alloy and method for brazing magnesium and aluminum alloy |
| US9056363B2 (en) | 2008-11-25 | 2015-06-16 | Solvay Fluor Gmbh | Anticorrosive flux |
| US9579752B2 (en) | 2010-02-10 | 2017-02-28 | Solvay Fluor Gmbh | Flux forming an insoluble brazing residue |
| US9314881B2 (en) | 2011-07-11 | 2016-04-19 | Daiichi Kigenso Kagaku Kogyo Co., Ltd. | Flux for brazing aluminum materials |
| CN103648709A (en) * | 2011-07-11 | 2014-03-19 | 第一稀元素化学工业株式会社 | Flux for brazing aluminum materials |
| EP2732907A4 (en) * | 2011-07-11 | 2015-09-30 | Daiichi Kigenso Kagaku Kogyo | Flux for brazing aluminum materials |
| CN103648709B (en) * | 2011-07-11 | 2016-01-20 | 第一稀元素化学工业株式会社 | The soldering flux of aluminium based material |
| JP2013018048A (en) * | 2011-07-11 | 2013-01-31 | Daiichi Kigensokagaku Kogyo Co Ltd | Flux for brazing aluminum-based material |
| CN102423834A (en) * | 2011-09-30 | 2012-04-25 | 河海大学常州校区 | Highly-active soldering flux suitable for stepped brazing of magnesium-aluminum alloy and preparation method of highly-active soldering flux |
| WO2013061843A1 (en) * | 2011-10-26 | 2013-05-02 | 株式会社神戸製鋼所 | Flux composition and brazing sheet |
| US10086480B2 (en) | 2011-10-26 | 2018-10-02 | Kobe Steel, Ltd. | Flux composition and brazing sheet |
| KR20150078206A (en) | 2013-12-30 | 2015-07-08 | 한라비스테온공조 주식회사 | Clad of aluminium product for brazing and manufacturing method of heat exchanger using the same |
| CN105618960A (en) * | 2016-03-15 | 2016-06-01 | 南京航空航天大学 | Soldering flux suitable for aluminum steel brazing |
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