JPH0224187B2 - - Google Patents
Info
- Publication number
- JPH0224187B2 JPH0224187B2 JP4086486A JP4086486A JPH0224187B2 JP H0224187 B2 JPH0224187 B2 JP H0224187B2 JP 4086486 A JP4086486 A JP 4086486A JP 4086486 A JP4086486 A JP 4086486A JP H0224187 B2 JPH0224187 B2 JP H0224187B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- flux
- aluminum
- chloride
- immersion
- 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
Links
- 230000004907 flux Effects 0.000 claims description 23
- 238000005219 brazing Methods 0.000 claims description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 238000007654 immersion Methods 0.000 claims description 8
- 235000011164 potassium chloride Nutrition 0.000 claims description 8
- 239000001103 potassium chloride Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 150000002222 fluorine compounds Chemical class 0.000 claims description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Inorganic materials [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 4
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 3
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 3
- 229910001626 barium chloride Inorganic materials 0.000 claims description 3
- 229910016569 AlF 3 Inorganic materials 0.000 claims description 2
- 229910001632 barium fluoride Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 235000002639 sodium chloride Nutrition 0.000 description 12
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005496 eutectics Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910018125 Al-Si Inorganic materials 0.000 description 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- 229910018520 Al—Si Inorganic materials 0.000 description 2
- 229910016036 BaF 2 Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Inorganic materials [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- -1 steel and copper Chemical class 0.000 description 1
- 239000000126 substance Substances 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、アルミニウム又はその合金部材の浸
漬ろう付け接合法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an immersion brazing method for joining aluminum or its alloy members.
(ロ) 背景技術
従来からの浸漬ろう付けは、一般に塩化ナトリ
ウム、塩化カリウム、塩化リチウムならびにフツ
化アルミニウム等のフツ化物からなるフラツクス
を耐火物槽中に溶融し、組立てられたろう付け部
材を該溶融液中に浸漬して、接合部にあらかじめ
クラツドされるか又は置かれたろう材を溶融させ
て接合部材を接合するもので、溶融フラツクスは
その本来の役割であるフラツクス効果の他に無酸
化加熱雰囲気と無酸化加熱媒体を構成するもので
ある。(b) Background Art Conventional immersion brazing generally involves melting a flux consisting of fluorides such as sodium chloride, potassium chloride, lithium chloride, and aluminum fluoride in a refractory tank, and then melting the assembled brazed parts. The joining parts are joined by immersing it in a liquid and melting the brazing filler metal that has been clad or placed in the joint part in advance.In addition to its original role as a flux effect, the molten flux also creates a non-oxidizing heating atmosphere. This constitutes a non-oxidizing heating medium.
これらのことから、浸漬によるろう付け接合方
法は、加熱炉によるろう付け法等に比して昇温速
度が早くかつ均一加熱が容易で、ろう付けの信頼
性が高いという特徴を有している。 For these reasons, the brazing joining method using immersion has the characteristics of a faster temperature rise rate, easier uniform heating, and higher brazing reliability than brazing methods using a heating furnace. .
ところが、ろう付け温度と整合するフラツクス
溶融温度、流動性アルミニウムの表面清浄力なら
びにろう材の流れ誘導などの諸性質を持たせるた
めに開発されたフラツクス（塩化ナトリウム、塩
化カリウム、塩化リチウム、フツ化物など）は潮
解性が強く、鋼や銅などの金属を強く腐食し、ま
た導電性であるので電気機器の絶縁を破壊する欠
点がある。 However, fluxes (sodium chloride, potassium chloride, lithium chloride, fluoride, etc.) are strongly deliquescent and strongly corrode metals such as steel and copper, and because they are conductive, they have the disadvantage of destroying the insulation of electrical equipment.
フラツクスの潮解性は、ろう付け温度の580〜
620℃においても、フラツクス中に水分が存在し
てアルミニウムを激しく酸化させ、ろう付けを阻
害する。 The deliquescent property of flux is from 580℃ to the brazing temperature.
Even at 620°C, moisture is present in the flux, severely oxidizing aluminum and inhibiting brazing.
このため、溶融フラツクスはあらかじめ表面の
浄化されたアルミニウム板をフラツクス中に浸漬
して水と反応させ、水素と酸化アルミニウムとし
て脱水する必要がある。また、溶融フラツクスは
長時間にわたる空気との接触が避けられず、脱水
作業を繰り返し行なう必要がある。しかも、脱水
作業でできた酸化アルミニウムなどの沈殿物の除
去作業も欠かせない等の問題があつた。 For this reason, it is necessary to immerse an aluminum plate whose surface has been purified in advance in the molten flux to react with water and dehydrate it into hydrogen and aluminum oxide. In addition, the molten flux cannot avoid contact with air for a long period of time, and it is necessary to repeatedly perform dewatering operations. Moreover, there were problems such as the necessity of removing precipitates such as aluminum oxide produced during dehydration.
(ハ) 発明の開示
本発明は、潮解性のないフラツクスによる浸漬
ろう付け法を提案するものである。(C) Disclosure of the Invention The present invention proposes an immersion brazing method using a non-deliquescent flux.
即ち、本発明は潮解性を持たない塩化バリウム
（BaCl2）、塩化ナトリウム（NaCl）ならびに塩
化カリウム（KCl）を主とし、これにフツ化物を
加えて、化学活性化のあるフラツクスとしたもの
である。 That is, the present invention mainly uses barium chloride (BaCl 2 ), sodium chloride (NaCl), and potassium chloride (KCl), which do not have deliquescent properties, and adds fluoride to them to create a chemically activated flux. be.
例えば、BaCl2、NaCl及びKClの重量比がそれ
ぞれ54.7：18.0：27.3の共融塩の融点は540℃であ
る。またアルミニウム硬ろうのAl−Si基合金の
溶融温度が564〜580℃であり、ろう付け作業温度
が580〜615℃であることから、上記共融塩の溶融
温度の540℃はアルミニウム又はその合金のろう
付けフラツクスとして適当である。 For example, a eutectic salt containing BaCl 2 , NaCl, and KCl in a weight ratio of 54.7:18.0:27.3, respectively, has a melting point of 540°C. Furthermore, since the melting temperature of the Al-Si base alloy of aluminum hard solder is 564 to 580°C and the brazing work temperature is 580 to 615°C, the melting temperature of the eutectic salt, 540°C, is 540°C for aluminum or its alloy. It is suitable as a brazing flux.
また、フラツクスの化学的活性化のために、フ
ツ化物例えばフツ化アルミニウム（AlF3）やフ
ツ化ナトリウム（NaF）などを混合するが、こ
の場合に混合によるフラツクスの溶融温度は570
℃好ましくは565℃まで昇温してもよいので、上
記共融塩が540℃であるから、30℃（又は25℃）
の余裕がなおあることとなる。これは、フツ化物
の種類と量の選択に幅があり、また共融塩の混合
比にも幅を持たせることができることになる。 Furthermore, in order to chemically activate the flux, fluorides such as aluminum fluoride (AlF 3 ) and sodium fluoride (NaF) are mixed, but in this case, the melting temperature of the flux due to mixing is 570°C.
℃Preferably, the temperature may be raised to 565℃, so since the temperature of the above eutectic salt is 540℃, the temperature is 30℃ (or 25℃)
This means that there is still room for this. This means that there is a wide range of selection in the type and amount of fluoride, and also in the mixing ratio of the eutectic salt.
また、その他の好適なフツ化物としては、
BaF2、CaF2、MgF2、LiF、KAlF4、K3AlF6が
ある。 In addition, other suitable fluorides include:
These include BaF 2 , CaF 2 , MgF 2 , LiF, KAlF 4 and K 3 AlF 6 .
この場合、塩化バリウム、塩化ナトリウム、塩
化カリウム及びフツ化物の重量比の範囲は、それ
ぞれ55〜47％、18〜22％、27〜33％、１〜20であ
る。 In this case, the weight ratios of barium chloride, sodium chloride, potassium chloride and fluoride range from 55 to 47%, 18 to 22%, 27 to 33%, and 1 to 20, respectively.
(ニ) 実施例
実施例 １
BaCl2、NaCl及びKClの粉末を重量比で54.7
％、18.0％、23.3％と、これに重量比10％のNaF
粉末を混合し、黒鉛電極を炉内槽底部に対向して
設けられた耐火レンガ製電極炉で溶融し、610℃
±３℃に保持し、空気雰囲気電気炉で560℃±５
℃に予熱したAl−Si基のアルミニウム合金ろう
付け接合部材を該溶融フラツクス中に浸漬し、
610℃に昇温して３分間保持後に取出した。その
後、空冷、湯洗、洗浄剤による洗浄でフラツクス
を除去し、部材表面を清浄化した。(D) Examples Example 1 BaCl 2 , NaCl and KCl powders in a weight ratio of 54.7
%, 18.0%, 23.3%, and this with a weight ratio of 10% NaF
The powders are mixed and a graphite electrode is melted in a refractory brick electrode furnace installed at the bottom of the furnace tank at 610°C.
Maintained at ±3℃ and 560℃±5 in air atmosphere electric furnace
immersing an Al-Si based aluminum alloy brazing joint member preheated to ℃ into the molten flux;
The temperature was raised to 610°C, held for 3 minutes, and then taken out. Thereafter, the flux was removed by air cooling, hot water washing, and washing with a detergent to clean the surface of the member.
ろう付けの結果は全接合部が充分なフイレツト
を形成し、強固な接合部材が得られた。 As a result of brazing, all joints formed sufficient fillets, and a strong joint member was obtained.
さらに、12時間後と24時間後に上記したところ
と同様に事前の脱水作業を行なうことなく同一の
電気炉中で浸漬ろう付けを行なつたが、上記と同
様に良好な接合が得られた。 Furthermore, after 12 and 24 hours, immersion brazing was carried out in the same electric furnace without performing the dehydration work in advance, and good joints were obtained in the same manner as above.
また、電気炉から昇る蒸気はベタついておら
ず、蒸気も潮解性のないものであつて、作業環境
に悪影響を与えないことも認められた。 It was also confirmed that the steam rising from the electric furnace was not sticky and non-deliquescent, and did not adversely affect the working environment.
実施例 ２
前記実施例１の混合塩化物粉末に重量比で
BaF2を１％、AlF3を２％、K3Al3F6を１％混
合・溶融して溶融フラツクスを作り、上記実施例
１と同じ条件でろう付けしたところ、同様な好結
果を得た。Example 2 In weight ratio to the mixed chloride powder of Example 1,
A molten flux was prepared by mixing and melting 1% BaF 2 , 2% AlF 3 , and 1% K 3 Al 3 F 6 , and when brazed under the same conditions as in Example 1 above, similar good results were obtained. Ta.
また、CaF2、MgF2、LiFのそれぞれ一種づつ
を、更にそれらの組合せを前記したと同様な混合
塩化物粉末に混合・溶融してフラツクスを作つた
ところ、これまた同様な好結果を得た。 In addition, when a flux was prepared by mixing and melting one type each of CaF 2 , MgF 2 , and LiF in combination with the same mixed chloride powder as described above, similar good results were obtained. .
(ホ) 発明の効果
本発明は上記のようにBaCl2、NaCl、KClとフ
ツ化物とでフラツクスを構成することにより、ア
ルミニウム又はその合金のろう付け性に必要な化
学活性や溶融ろうとの置換性、ろう材に対応する
フラツクスの融点などを満足しながら、従来のフ
ラツクスによる浸漬ろう付けでの脱水作業のほと
んどを省略することができ、また炉底部の沈殿物
除去の軽減や吸水によるフラツクスの組成変化の
減少など多くの優れた効果をあげることができ
る。しかも、本発明法による潮解性のないフラツ
クスの使用は、二次的効果として設備や治具の腐
食の防止や電気的絶縁低下を減少させる利点も有
する。(E) Effects of the Invention As described above, the present invention improves the chemical activity necessary for the brazing properties of aluminum or its alloys and the substitutability with molten solder by composing the flux with BaCl 2 , NaCl, KCl and fluoride. , it is possible to omit most of the dehydration work in conventional flux immersion brazing while satisfying the melting point of the flux corresponding to the brazing filler metal, and it is also possible to reduce the removal of precipitates at the bottom of the furnace and improve the composition of the flux due to water absorption. It can have many excellent effects such as reducing changes. Furthermore, the use of a non-deliquescent flux according to the method of the present invention also has secondary effects of preventing corrosion of equipment and jigs and reducing deterioration in electrical insulation.
本発明は以上の如く、信頼性の高いろう付け性
を維持しつつ、作業性や経済性を大きく改善した
浸漬ろう付け接合方法を提供することができるも
のである。 As described above, the present invention can provide an immersion brazing joining method that greatly improves workability and economic efficiency while maintaining highly reliable brazing performance.
Claims (1)
その合金部材を55〜47重量％の塩化バリウムと18
〜22重量％の塩化ナトリウムと27〜33重量％の塩
化カリウムと１〜20重量％のNaF、BaF2、
AlF3、CaF2、MgF2、LiF、KAlF4、K3AlF6か
ら選ばれる一種又は複数のフツ化物とを混合して
なる溶融フラツクス中に浸漬してろう付けするこ
とを特徴とするアルミニウム又はその合金部材の
浸漬ろう付け法。1 Aluminum or its alloy member with brazing material applied in advance is mixed with 55-47% by weight barium chloride and 18
~22 wt% sodium chloride, 27-33 wt% potassium chloride, and 1-20 wt% NaF, BaF2 ,
Aluminum or aluminum characterized by being immersed in a molten flux mixed with one or more fluorides selected from AlF 3 , CaF 2 , MgF 2 , LiF, KAlF 4 and K 3 AlF 6 for brazing. Immersion brazing method for alloy parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4086486A JPS62199293A (en) | 1986-02-26 | 1986-02-26 | Dip brazing method for aluminum of aluminum alloy member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4086486A JPS62199293A (en) | 1986-02-26 | 1986-02-26 | Dip brazing method for aluminum of aluminum alloy member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62199293A JPS62199293A (en) | 1987-09-02 |
| JPH0224187B2 true JPH0224187B2 (en) | 1990-05-28 |
Family
ID=12592391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4086486A Granted JPS62199293A (en) | 1986-02-26 | 1986-02-26 | Dip brazing method for aluminum of aluminum alloy member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62199293A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058345U (en) * | 1991-07-12 | 1993-02-05 | 株式会社イナツクス | Circular pipe mounting structure for bathtub and bushing for pipe mounting |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729158Y2 (en) * | 1987-08-10 | 1995-07-05 | 新日軽株式会社 | Ventilation door |
| JPH0729159Y2 (en) * | 1987-08-10 | 1995-07-05 | 新日軽株式会社 | Ventilation door |
| JP3348093B2 (en) | 2000-03-17 | 2002-11-20 | 幸人 野村 | Continuous high-speed welding method of double-wound metal tube and welding furnace for implementing the method |
-
1986
- 1986-02-26 JP JP4086486A patent/JPS62199293A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058345U (en) * | 1991-07-12 | 1993-02-05 | 株式会社イナツクス | Circular pipe mounting structure for bathtub and bushing for pipe mounting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62199293A (en) | 1987-09-02 |
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| US2299164A (en) | Brazing light metals | |
| JPS61249700A (en) | Flux for brazing of aluminum | |
| JPH0357590A (en) | Flux for brazing and brazing method for aluminum material by using this flux | |
| JPS6037292A (en) | Brazing method of aluminum and alloy thereof | |
| SU1382629A1 (en) | Flux for welding aluminium alloys | |
| SU1706820A1 (en) | Flux for soldering steels | |
| SU764906A1 (en) | Flux for welding aluminium and its alloys | |
| US2299167A (en) | Brazing light metals | |
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| JPH0355237B2 (en) |
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