JPH01293993A - Brazing method for aluminum - Google Patents
Brazing method for aluminumInfo
- Publication number
- JPH01293993A JPH01293993A JP12370488A JP12370488A JPH01293993A JP H01293993 A JPH01293993 A JP H01293993A JP 12370488 A JP12370488 A JP 12370488A JP 12370488 A JP12370488 A JP 12370488A JP H01293993 A JPH01293993 A JP H01293993A
- Authority
- JP
- Japan
- Prior art keywords
- flux
- brazing
- chamber
- powder
- water
- 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
- 238000005219 brazing Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 12
- 229910052782 aluminium Inorganic materials 0.000 title claims description 12
- 230000004907 flux Effects 0.000 claims abstract description 55
- 239000000843 powder Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007900 aqueous suspension Substances 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000011812 mixed powder Substances 0.000 claims abstract 2
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 abstract 4
- 239000000945 filler Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009972 noncorrosive effect Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、アルミニウム又はアルミニウム合金部材をろ
う付けする方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a method for brazing aluminum or aluminum alloy members.
さらに詳細には、アルミニウム又はアルミニウド合金と
ろう材の表面の酸化膜をろう付け時に除去するためのフ
ラクスとして、非水溶性でろう伺は後に水の存在下でも
非腐食性であるフン化物系のフラフクスを使用するろう
付け方法に関するものである。More specifically, a fluoride-based flux that is water-insoluble and non-corrosive even in the presence of water is used as a flux to remove the oxide film on the surface of aluminum or aluminum alloy and brazing material during brazing. This relates to a brazing method using fluffx.
特に、この発明においては、市販の薬剤を使用し、フラ
ックスを安定した組成でかつ高い経済性をもって連続ろ
う付け方法中の一工程としてその場で作り、フラックス
の生成と塗付を含む一連の工程としての連続ろう付けを
可能としたろうイ・１け方法を提案するものである。In particular, the present invention uses commercially available agents to produce flux on-site with a stable composition and high economic efficiency as a step in a continuous brazing process, and a series of steps including flux generation and application. This paper proposes a brazing method that enables continuous brazing.
（ロ）背景技術
アルミニウムろう付け用の非腐食性フラックスとしては
、フッ化物系のフラックスが実用化されている。(B) Background Art Fluoride-based fluxes have been put into practical use as non-corrosive fluxes for aluminum brazing.
これらの代表的なものとしては、（ａ）テトラフルオロ
アルミニウム
６５．６〜９９．９重量％とヘキサフルオロアルミニウ
ム酸カリウム（Ｋ３Ａ立Ｆｇ）を３４．４〜０，１重量
％等を含むフッ化物が、特公昭５Ｂ−２７０３７号公報
に記載されており、これはＫＦとＡｌＦ２とを混合溶融
して作られ、その冷却固化後に微粉末として使用される
。また、（ｂ） ＡＭ Ｆａ （５３〜５５％）とＫ
Ｆ（４７〜４５％）の粉末に水を加えて混合しペースト
状にした後に２００℃以下で乾燥させ、これをフラック
スとして使用するものが知られている。Typical examples of these include (a) fluoride containing 65.6 to 99.9% by weight of tetrafluoroaluminium and 34.4 to 0.1% by weight of potassium hexafluoroaluminate (K3A standing Fg); is described in Japanese Patent Publication No. 5B-27037, which is made by mixing and melting KF and AlF2, and is used as a fine powder after being cooled and solidified. Also, (b) AM Fa (53-55%) and K
It is known that a powder of F (47 to 45%) is mixed with water to form a paste, dried at 200° C. or lower, and used as a flux.
しかし、かかる（ａ）及び（ｂ）の方法は、原料を混合
溶融するかペースト状にして生成物を得るので、得られ
た生成物フラックスとして使用するためにはこれを乾燥
しなけらばならず、従ってこれらの方法を一連の連続す
るろう付け工程中に組入れることは非常に困難である。However, in methods (a) and (b), the raw materials are mixed and melted or made into a paste to obtain a product, so the obtained product must be dried in order to be used as a flux. Therefore, it is very difficult to incorporate these methods into a series of continuous brazing processes.
（ハ）発明の開示
これら既知のフラックスの生成方法に対し、本発明では
Ａ文Ｆ３とＫａＡＭＦ６を原料とするもので、３０〜４
０重量％のＡ文Ｆ３と７０〜５４重量％のに２Ａ文Ｆ８
を水で４昆合し、微粉として塗布し、ろう付けするもの
である。(C) Disclosure of the Invention In contrast to these known flux production methods, the present invention uses A-F3 and KaAMF6 as raw materials, and uses 30 to 4
0 weight% A sentence F3 and 70-54 weight% 2A sentence F8
is mixed with water, applied as a fine powder, and brazed.
従って、本発明においては、フラックス原料が水懸濁液
として粉砕・、混合されるものであり、得られたフラッ
クスは水懸濁液として塗付ネれるものであるから、フラ
ックスの生成とその塗付の工程を連続ろう付け方法中の
一工程として容易に組入れることができる。換言すれば
、本発明法によりフラックスの生成とその塗付が工程中
に組込まれたアルミニウムの連続ろう付け方法が達成さ
れることになる。Therefore, in the present invention, the flux raw materials are ground and mixed as an aqueous suspension, and the obtained flux is applied as an aqueous suspension, so that generation of the flux and its application are easy. The additional step can be easily incorporated as one step in a continuous brazing method. In other words, the method of the present invention provides a continuous brazing method for aluminum in which the generation and application of flux are incorporated into the process.
以下、本発明法の実施例を図面を参照して更に詳細に説
明する。Hereinafter, embodiments of the method of the present invention will be described in more detail with reference to the drawings.
（ニ）実施例
添付図面に示されるものは、本発明法を実施するために
好適なアルミニウムろう付け用の連続雰囲気炉である。(d) Examples What is shown in the accompanying drawings is a continuous atmosphere furnace for aluminum brazing suitable for carrying out the method of the present invention.
この雰囲気炉は、連続して設けられたフラックス塗付室
１と、乾燥室２と、昇温室３と、ろう付け室４と、冷却
室５とからなり、これらの室中をメンシュベルト６が図
面において右手方向に向って循環している。This atmospheric furnace consists of a flux application chamber 1, a drying chamber 2, a heating chamber 3, a brazing chamber 4, and a cooling chamber 5, which are arranged in series, and a mensch belt 6 runs through these chambers. It circulates towards the right hand in the drawing.
上記各室中は、ガス送入ロアから送られて図中の矢印の
ように流れるＮ２ガスにより所定の雰囲気に保持される
。そして、アルミニウム又はアルミニウム合金の部品が
フラックス懸濁液１の側のメツシュベルト６北に置かれ
て炉中を進行し、ろう付けされる。Each of the above chambers is maintained at a predetermined atmosphere by N2 gas sent from the gas feed lower and flowing in the direction of the arrow in the figure. Then, the aluminum or aluminum alloy parts are placed on the north side of the mesh belt 6 on the side of the flux suspension 1, proceed through the furnace, and are brazed.
フラックス塗付室ｌの下部はフラックス塗付槽１０をな
し、該槽１１にはフラックス塗付室１の一ヒ方に設けら
れたフラックス生成装置２１で生成されたフラックス懸
濁液が貯えられる。また、フラックス塗付室１内の上方
或は隣接した位置にはスプレー１２が設けられ、フラッ
クス塗付ポンプ１１で揚水された懸濁液のフラックスが
ろう付けされるアルミニウム部品上に塗付されるように
なっている。The lower part of the flux application chamber 1 constitutes a flux application tank 10, and the flux suspension generated by a flux generation device 21 provided on one side of the flux application chamber 1 is stored in the tank 11. Further, a sprayer 12 is provided above or adjacent to the flux application chamber 1, and the flux of the suspension pumped up by the flux application pump 11 is applied onto the aluminum parts to be brazed. It looks like this.
前述したフラックス生成装置２１中には、電動モーター
（図示せず）によって駆動される撹拌器８が設けられて
おり、その上方にはＡ Ｉ Ｆ ２粉末を貯えるホッパ
ー状の槽２３とＫａＡＩＦ。粉末を貯える同様にホッパ
ー状の槽２４が設けられている。The above-mentioned flux generating device 21 is provided with a stirrer 8 driven by an electric motor (not shown), and above the stirrer 8 are a hopper-shaped tank 23 for storing AIF 2 powder and a KaAIF. A similarly hopper-like tank 24 is provided for storing powder.
２２は循環ポンプで、管でフラックス生成装置２１の下
部と上部とで該フラックス生成装置２１に運なかってお
り、その作動時にはフラックス生成装置２１中の原料を
矢印のように循環させて、撹拌器８と協働して原料を混
合する。図面の簡素化のために図示していないが、フラ
ックス生成装置２１とフラックス塗付槽１０には水を供
給する管が連なかっている。Reference numeral 22 denotes a circulation pump, which transports the flux to the flux generation device 21 through pipes between the lower and upper portions of the flux generation device 21. When the pump is in operation, it circulates the raw material in the flux generation device 21 in the direction of the arrow, 8 to mix the raw materials. Although not shown to simplify the drawing, a pipe for supplying water is connected to the flux generation device 21 and the flux application tank 10.
上述した構成の連続炉を用い、３９重量％のＡ文Ｆ３粉
末と６１重量％のＫ３ＡｌＦ６粉末とをＡ文Ｆ３槽２３
とＫ３ＡｌＦＧ槽２４よりフラックス生成装置２１に送
り、循環ポンプ２２と撹拌器８を運転しながら水を混ぜ
て粉砕と混合を行なった後、フラックス塗付室ｌの槽１
０に送り、そこで得られたフラックスの水懸濁液の濃度
を水９５〜９０％に対し混合フラックス５〜１０％に調
整した。この割合は、混合フラックスをろう伺けされる
アルミニウム部品−ヒに均一に塗付するのに便なる量で
ある。Using the continuous furnace configured as described above, 39% by weight of A-F3 powder and 61% by weight of K3AlF6 powder were heated in A-F3 tank 23.
is sent from the K3AlFG tank 24 to the flux generation device 21, mixed with water for pulverization and mixing while operating the circulation pump 22 and the stirrer 8, and then transferred to the flux generation device 21 in the flux application chamber 1.
0, and the concentration of the resulting aqueous suspension of flux was adjusted to 5-10% mixed flux with respect to 95-90% water. This ratio is a convenient amount to uniformly apply the mixed flux to the aluminum part being soldered.
このような法度に調整したフラックス水懸濁液を、フラ
ックス塗布ポンプ１１を駆動してスプレー１２からろう
材が付けられたアルミニウム部品上に塗付し、これを乾
燥、Ａ温、ろう付け（６０５°Ｃ）、冷却の一連の工程
を通し、良好なろう付けを得た。なお、ろう付け室４の
雰囲気は前述した通りＮ２で露点−４０°Ｃ以下、酸素
５０ ｐｐｍ以下とした。This carefully adjusted flux water suspension is applied from the spray 12 by driving the flux application pump 11 onto the aluminum parts to which the brazing material has been applied, and then dried, heated to temperature A, and brazed (605). °C), a good brazing was obtained through a series of cooling steps. As described above, the atmosphere in the brazing chamber 4 was N2 with a dew point of -40° C. or lower and an oxygen concentration of 50 ppm or lower.
実験により測定したところ、ＡｕＦ３３９重量％とに３
Ａ Ｉ Ｆ３６１重量％の混合フラフクスの融点は６５
０°Ｃであり、一方Ａ文Ｆ３ （３０〜４６重紗％）と
Ｋ３ＡｌＦ６ （７０〜５４重量％）の混合フラックス
の融点は５６０〜５７５°Ｃの範囲内であり、アルミニ
ウムの一般的なろうイ」け温度以下で溶融し、その目的
を達するのに適切であることが認められた。Experimentally determined that AuF339% by weight
The melting point of mixed fluff with 361% by weight of A I F is 65
0°C, while the melting point of the mixed flux of A-F3 (30-46% by weight) and K3AlF6 (70-54% by weight) is within the range of 560-575°C, which is a common wax for aluminum. It was found that it melts below the ignition temperature and is suitable for achieving its purpose.
（ホ）発明の効果
本発明法は前述した通り、フラックスが市販の薬剤を用
いしかも連続ろう付け工程中の一環として生成されるの
で、ろう付けを完全に連続的に行なえる卓越した効果が
ある。(e) Effects of the Invention As mentioned above, the method of the present invention uses a commercially available agent and is generated as part of the continuous brazing process, so it has the outstanding effect of allowing completely continuous brazing. .
しかも、本発明法によれば混合フラ、アクスの生成過程
で用いられた水が、そのままフラックスを薄くろう付け
部材に塗付するための水懸濁液の水分として使用される
ので、工程が簡単で無理がなく、従ってアルミニウム又
はアルミニウム合金のろう付けを連続的に高品質かつ低
コストで達成できる利点がある。Moreover, according to the method of the present invention, the water used in the process of producing the mixed flux and ax is used as water in the water suspension for applying a thin layer of flux to the parts to be brazed, so the process is simple. Therefore, there is an advantage that brazing of aluminum or aluminum alloy can be continuously achieved at high quality and at low cost.
図は本発明方法を実施するのに好適な連続ろう（＝Ｊけ
炉の説明的な断面図である。
符号説明
１−フラックス塗布槽 ２−乾燥室 ３−昇温室４−ろ
う付け室 ５−冷却室 １０−フラックス塗布槽 １１
−フラックス塗布ポンプ
１２−スプレー ２１−フラックス生成装置２３−Ａ文
Ｆ３粉末槽 ２４−Ｋ３ＡｌＦ６粉末槽
手続補正書（自発）
特許庁長官 小 川 邦 夫 殿
１、事件の表示
特願昭６３−１２３７０４号
２、発明の名称
アルミニウムのろう付け方法
３、補正をする者
事件との関係 特許出願人
名称 関東冶金工業株式会社
４、代理人
「生成物をフラックス」と補正する。
（２）明細書５Ｐｌ Ｏ行目に「該槽１１には」とある
を「該槽１０には」と補正する。
（３）明細書７Ｐ１２行目に［Ｋ３Ａ見ＦｓＪとあるを
「Ｋ２ＡｌＦｓＪと、また同Ｐ１３行目に「６５０℃で
あり、−Ｍｊとあるな「５６０℃であり、また」とそれ
ぞれ補正する。
以 上The figure is an explanatory sectional view of a continuous brazing furnace suitable for carrying out the method of the present invention. Reference numerals 1 - Flux coating tank 2 - Drying room 3 - Warming room 4 - Brazing room 5 - Cooling room 10-Flux coating tank 11
- Flux application pump 12 - Spray 21 - Flux generator 23 - A F3 powder tank 24 - K3AlF6 powder tank Procedural amendment (voluntary) Commissioner of the Japan Patent Office Kunio Ogawa 1, Indication of Case Patent Application No. 123704/1983 2. Name of the invention: Aluminum brazing method 3. Relationship with the case by the person making the amendment Name of patent applicant: Kanto Yakin Kogyo Co., Ltd. 4. Agent: ``Flux the product.'' (2) In line 0 of 5Pl of the specification, the phrase "in the tank 11" is corrected to "in the tank 10." (3) In the 12th line of page 7 of the specification, [K3A FsJ is corrected to ``K2AlFsJ,'' and in the 13th line of the same page, ``650°C and -Mj are corrected to 560°C and again.''that's all
Claims (1)
中をアルウニウム又はアルミニウム合金部材を通過せし
めて該部材上に付けたろう材を溶融・固化させることに
より該部材をろう付けする方法であって、上記乾燥室の
前段にフラックス塗付室を設け、このフラックス塗付室
に隣接してフラックス生成装置を設け、このフラックス
生成装置中でＡｌＦ＿３粉末３０〜４６重量％とＫ＿３
ＡｌＦ＿６粉末７０〜５４重量％とを水の存在下で粉砕
・混合して水懸濁液とした後、該水懸濁液の濃度を水９
５〜９０％対混合粉末５〜１０％の割合に調整して上記
フラックス塗付室中で上記アルミニウム部材上に塗付す
ることを特徴とするろう付け方法。A method of brazing aluminum or aluminum alloy members by passing them through a continuous furnace consisting of a drying room, heating room, brazing room, cooling room, etc., and melting and solidifying the brazing material applied to the members. A flux application chamber is provided upstream of the drying chamber, a flux generation device is provided adjacent to this flux application chamber, and in this flux generation device, 30 to 46% by weight of AlF_3 powder and K_3
After grinding and mixing 70 to 54% by weight of AlF_6 powder in the presence of water to form a water suspension, the concentration of the water suspension was reduced to 9% by weight.
A brazing method characterized in that the flux is adjusted to a ratio of 5 to 90% to mixed powder and 5 to 10% and applied onto the aluminum member in the flux application chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12370488A JPH01293993A (en) | 1988-05-20 | 1988-05-20 | Brazing method for aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12370488A JPH01293993A (en) | 1988-05-20 | 1988-05-20 | Brazing method for aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01293993A true JPH01293993A (en) | 1989-11-27 |
Family
ID=14867282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12370488A Pending JPH01293993A (en) | 1988-05-20 | 1988-05-20 | Brazing method for aluminum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01293993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05192765A (en) * | 1991-10-18 | 1993-08-03 | Nippondenso Co Ltd | Aluminum brazing method and furnace therefor |
-
1988
- 1988-05-20 JP JP12370488A patent/JPH01293993A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05192765A (en) * | 1991-10-18 | 1993-08-03 | Nippondenso Co Ltd | Aluminum brazing method and furnace therefor |
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