JPH09314319A - Brazing method - Google Patents
Brazing methodInfo
- Publication number
- JPH09314319A JPH09314319A JP12971296A JP12971296A JPH09314319A JP H09314319 A JPH09314319 A JP H09314319A JP 12971296 A JP12971296 A JP 12971296A JP 12971296 A JP12971296 A JP 12971296A JP H09314319 A JPH09314319 A JP H09314319A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- brazed
- brazing material
- frequency induction
- induction heating
- 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 132
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 230000006698 induction Effects 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 11
- 238000007747 plating Methods 0.000 claims abstract description 10
- 238000007751 thermal spraying Methods 0.000 claims abstract description 7
- 239000011261 inert gas Substances 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 28
- 229910052802 copper Inorganic materials 0.000 abstract description 28
- 239000010949 copper Substances 0.000 abstract description 28
- 239000000945 filler Substances 0.000 abstract description 18
- 230000007547 defect Effects 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 230000009471 action Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
- General Induction Heating (AREA)
Abstract
(57)【要約】
【課題】 被ろう付け部材の継手部を高周波誘導加熱に
より欠陥なくろう付けすることができ、特に、複数の複
雑形状部材を銅ろう付けするのに用いて有益な高周波誘
導加熱によるろう付け方法を提供する。
【解決手段】 ろう付けすべき被ろう付け部材を気密容
器内に収納配置し、前記気密容器内を不活性ガス雰囲気
或いは還元性ガス雰囲気、又は真空に保持し、前記被ろ
う付け部材の継手部を高周波誘導加熱によりろう付けす
る方法において、被ろう付け部材（例えば、羽根６）の
表面上にめっき法或いは溶射法にてろう材金属から成る
ろう材金属被膜（例えば、銅材金属被膜１４）を形成
し、被ろう付け部材６及びろう材金属被膜１４を高周波
誘導加熱することによりろう材金属被膜１４を溶融さ
せ、この溶融されたろう材を被ろう付け部材６の継手部
分の空隙に流れ込ませて被ろう付け部材の継手部Ａ，Ｂ
のろう付けを行なう。
(57) Abstract: A joint part of a member to be brazed can be brazed without defects by high-frequency induction heating, and in particular, high-frequency induction useful for copper brazing of a plurality of complicated-shaped members. A brazing method by heating is provided. SOLUTION: A brazing member to be brazed is housed and arranged in an airtight container, and the airtight container is kept in an inert gas atmosphere, a reducing gas atmosphere or a vacuum, and a joint portion of the brazed member. In the method of brazing by high frequency induction heating, a brazing filler metal film (for example, copper filler metal coating 14) made of a brazing filler metal on the surface of a member to be brazed (for example, blade 6) by a plating method or a thermal spraying method. Is formed, the brazing material 6 and the brazing material metal coating 14 are heated by high frequency induction to melt the brazing material metal coating 14, and the melted brazing material is caused to flow into the space of the joint portion of the brazing material 6. Joint parts A and B of brazed members
Braze.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種部材を高周波
誘導加熱によりろう付けする方法に関し、特に、複雑形
状部材を高周波雰囲気中或いは高周波真空中でろう付け
する方法に適用して好適なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of brazing various members by high frequency induction heating, and is particularly suitable for application to a method of brazing complex shaped members in a high frequency atmosphere or a high frequency vacuum. is there.
【０００２】[0002]
【従来の技術】高周波誘導加熱コイルにてろう材を加熱
溶融させて部材間の継手部分のろう付けを行なうように
した従来の高周波ろう付け方法にあっては、線材，板
材，或いは粉末材等から成るろう材を被ろう付け部材の
継手部分の形状に合わせて予め成型しておき、ろう付け
継手部に嵌め込むか或いはこの上に載置した状態で加熱
溶融させる、いわゆる置きろう方式を採用することが多
かった。2. Description of the Related Art In a conventional high-frequency brazing method in which a brazing material is heated and melted by a high-frequency induction heating coil to braze a joint portion between members, a wire, a plate, a powder material, or the like is used. The brazing material consisting of is formed in advance according to the shape of the joint of the member to be brazed, and is fitted to the brazing joint or heated and melted while being placed on the brazing joint. I often did.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述の
如き従来の置きろう方式では、次のような問題点があ
る。すなわち、特に被ろう付け部材が複雑形状の部材で
ある場合には被ろう付け部材の継手部分にろう材を嵌め
込むことが困難であったり、或いはその作業が極めて面
倒である等の問題点がある。However, the above-mentioned conventional placing method has the following problems. That is, in particular, when the brazing member is a member having a complicated shape, it is difficult to fit the brazing material into the joint portion of the brazing member, or the operation is extremely troublesome. is there.
【０００４】また、ろう材を単に被ろう付け部材上に載
せて被ろう付け部材を高周波誘導加熱する場合には、ろ
う材が高周波誘導加熱による電磁力の作用により所定位
置（所定の載置位置）から移動されて位置ずれを生じ、
継手部分に対するろう材の相対位置が変化してしまう不
具合がある。このような事態を生じると、高周波誘導加
熱コイルとろう材の各部との間隔が一定（均一）ではな
くなり、高周波誘導加熱コイルに近接したろう材部分と
これから離れたろう材部分とが生じる。そのため、高周
波誘導加熱時には高周波誘導加熱コイルに近接している
ろう材部分が所定のろう付け温度に達する前に加熱溶融
状態となる。この際、ろう付けすべき部材間の継手部分
の温度が低い状態なので、加熱溶融されたろう材の一部
分は球形状を呈することとなり、前記継手部分の温度が
所定のろう付け温度に達した時には球形状を呈していた
ろう材がオーバヒートにより細かく飛散し、その結果、
前記継手部分の空隙に溶融状態のろう材が流れ込まずに
ろう付け欠陥となるおそれがある。In the case where a brazing material is simply placed on a brazing member and high-frequency induction heating of the brazing member is performed, the brazing material is applied to a predetermined position (a predetermined mounting position) by the action of electromagnetic force due to high-frequency induction heating. ), Causing misalignment,
There is a problem that the relative position of the brazing material to the joint changes. When such a situation occurs, the interval between the high-frequency induction heating coil and each portion of the brazing material is not constant (uniform), and a brazing material portion close to the high-frequency induction heating coil and a brazing material portion separated therefrom are generated. Therefore, at the time of high-frequency induction heating, the brazing material portion close to the high-frequency induction heating coil is brought into a heated and molten state before reaching a predetermined brazing temperature. At this time, since the temperature of the joint between the members to be brazed is low, a part of the brazed material that has been heated and melted assumes a spherical shape. When the temperature of the joint reaches a predetermined brazing temperature, The brazing material that had exhibited its shape was finely scattered due to overheating, and as a result,
There is a possibility that the brazing material in the molten state does not flow into the gaps of the joint portion, resulting in a brazing defect.
【０００５】一方、上述した高周波誘導加熱コイルから
離れたろう材部分は、継手部分が所定のろう付け温度に
到達しても温度不足により溶融状態とならない。このた
め、このろう材部分に対応する継手部分の空隙にろう材
が流れ込まず、この部分にもろう付け欠陥を生じるおそ
れがある。On the other hand, the brazing portion separated from the high-frequency induction heating coil does not enter a molten state due to insufficient temperature even when the joint reaches a predetermined brazing temperature. Therefore, the brazing material does not flow into the gap of the joint portion corresponding to the brazing material portion, and there is a possibility that a brazing defect may occur in this portion.
【０００６】このような現象は、ろう付け温度が高くか
つ流動性の悪い銅ろう付けにおいて発生しやすい。その
一方で、銅ろう付けはろう材のコストが低くしかもろう
付け強度が強いので、銅ろう付けを多用したいところで
ある。しかし、複雑な形状を有しかつろう付け箇所の多
い部材、例えば自動車用自動変速機の構成部品であるト
ルクコンバータの羽根を銅ろう付けする場合等において
は、３０枚余の羽根全数を完全に欠陥なくろう付けする
ことは難しく、部分的にろう付け欠陥を生じる箇所もあ
るのが実状である。Such a phenomenon is likely to occur in copper brazing having a high brazing temperature and poor fluidity. On the other hand, copper brazing has a low brazing material cost and a high brazing strength. However, in the case of copper brazing a member having a complicated shape and having many brazing points, for example, a blade of a torque converter which is a component of an automatic transmission for an automobile, a total number of more than 30 blades is completely reduced. It is difficult to braze without defects, and there are some places where brazing defects occur partially.
【０００７】本発明は、このような実状に鑑みてなされ
たものであって、その目的は、被ろう付け部材の継手部
を高周波誘導加熱により欠陥なくろう付けすることがで
き、特に、複数の複雑形状部材を銅ろう付けするのに用
いて有益な高周波誘導加熱によるろう付け方法を提供す
ることにある。The present invention has been made in view of such circumstances, and an object thereof is to braze a joint portion of a member to be brazed by a high frequency induction heating without any defect, and in particular, a plurality of brazing members can be brazed. It is an object of the present invention to provide a brazing method by high frequency induction heating, which is useful for brazing a complex shaped member.
【０００８】[0008]
【課題を解決するための手段】上述の目的を達成するた
めに、本発明では、ろう付けすべき被ろう付け部材を気
密容器内に収納配置し、前記気密容器内を不活性ガス雰
囲気或いは還元性ガス雰囲気、又は真空に保持し、前記
被ろう付け部材の継手部を高周波誘導加熱によりろう付
けする方法において、前記被ろう付け部材の表面上にめ
っき法或いは溶射法にてろう材金属から成るろう材金属
被膜を形成し、前記被ろう付け部材及びろう材金属被膜
を高周波誘導加熱することにより前記ろう材金属被膜を
溶融させ、この溶融されたろう材を前記被ろう付け部材
の継手部分の空隙に流れ込ませて前記被ろう付け部材の
継手部のろう付けを行なうようにしている。In order to achieve the above-mentioned object, in the present invention, a member to be brazed to be brazed is housed in an airtight container, and the inside of the airtight container is treated with an inert gas atmosphere or reduction. In a method of brazing the joint part of the brazed member by high frequency induction heating while maintaining in a gas atmosphere or vacuum, the brazing material metal is formed on the surface of the brazed member by a plating method or a thermal spraying method. A brazing filler metal is formed, and the brazing filler metal and the brazing filler metal coating are subjected to high frequency induction heating to melt the brazing filler metal coating, and the melted brazing filler metal is left in the joint portion of the brazing filler member. The joint portion of the member to be brazed is brazed.
【０００９】また、本発明では、前記被ろう付け部材の
全表面上に前記ろう材金属被膜を形成するようにしてい
る。Further, in the present invention, the brazing filler metal film is formed on the entire surface of the brazed member.
【００１０】また、本発明では、前記被ろう付け部材の
片方の表面上にのみ前記ろう材金属被膜を形成するよう
にしている。Further, in the present invention, the brazing filler metal film is formed only on one surface of the brazed member.
【００１１】また、本発明では、前記ろう材金属被膜が
表面上に形成された前記被ろう付け部材を１０-3Ｔｏｒ
ｒ以上の還元性ガス雰囲気中に保持し、高周波誘導加熱
にて前記ろう材金属被膜を溶融させて成るろう材により
前記被ろう付け部材の継手部のろう付けを行なうように
している。Further, according to the present invention, the brazed member having the brazing filler metal film formed on the surface thereof is 10 -3 Tor.
The joint portion of the member to be brazed is brazed by a brazing material formed by melting the brazing material metal film by high frequency induction heating while maintaining in a reducing gas atmosphere of r or more.
【００１２】[0012]
【発明の実施の形態】以下、本発明の一実施例について
図面を参照して説明する。なお、本実施例においては、
本発明に係るろう付け方法を使用することにより、自動
車用自動変速機用のトルクコンバータ１の主要構成部材
であるポンプインペラー機構部２の製造（銅ろう付け）
を行なうようにしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In this embodiment,
By using the brazing method according to the present invention, manufacture of the pump impeller mechanism 2 which is a main component of the torque converter 1 for an automatic transmission for an automobile (copper brazing)
I am trying to do.
【００１３】図１〜図３はポンプインペラー機構部（羽
根車）２の組立完成品を示すものであって、このポンプ
インペラー機構部２は、一端側に開放口３を有しかつ他
端側の中心部に開孔４を有するカップ形状のケーシング
５と、このケーシング５の内部の円周領域において等角
度間隔をもって配設された軟鋼製の複数枚（例えば，３
２枚）の羽根６と、これらの羽根６の上部を互いに連結
する位置決め兼補強用の連結リング７とから構成される
ものである。上述の羽根６には図２に示すように３つの
突起８，９及び１０が一体成形されており、これらのう
ちの片側の一対の突起８，９がケーシング５の径方向の
２箇所に形成された係合凹部１１，１２にそれぞれ係合
された状態で、各羽根６の一端面６ａがケーシング５に
当接配置されている。そして、羽根６の他端面の中間箇
所に一体成形された突起１０が、前記連結リング７の孔
部１３にそれぞれ挿入配置された状態となされている。
これにより、複数枚の羽根６は、ケーシング５の所定位
置に位置決めされてこのケーシング５と連結リング７と
の間に一体に組付けられると共に（図２及び図３参
照）、ケーシング５の径方向に対して所定の角度に傾斜
された状態で配設されてろう付けされるようになってい
る（図１参照）。1 to 3 show a completed assembly of a pump impeller mechanism portion (impeller) 2, which has an opening 3 at one end and the other end. A cup-shaped casing 5 having an opening 4 in the center thereof, and a plurality of mild steels (for example, 3 cups) arranged at equal angular intervals in a circumferential region inside the casing 5.
(2) blades 6 and a connection ring 7 for positioning and reinforcing which connects the upper portions of the blades 6 to each other. As shown in FIG. 2, three projections 8, 9 and 10 are integrally formed on the above-mentioned blade 6, and a pair of projections 8, 9 on one side of these are formed at two locations in the radial direction of the casing 5. One end surfaces 6a of the blades 6 are arranged in contact with the casing 5 in a state of being engaged with the engaged recesses 11 and 12, respectively. The projections 10 integrally formed at the intermediate portion of the other end surface of the blade 6 are inserted and arranged in the holes 13 of the connection ring 7 respectively.
Thereby, the plurality of blades 6 are positioned at predetermined positions of the casing 5 and are integrally assembled between the casing 5 and the connection ring 7 (see FIGS. 2 and 3), and the radial direction of the casing 5 Are brazed at a predetermined angle with respect to (see FIG. 1).
【００１４】なお、図２及び図３において、Ａは羽根６
とケーシング５とが互いに銅ろう付けにて結合される継
手部であり、Ｂは羽根６と連結リング７とが互いに銅ろ
う付けにて結合されるの継手部である。また、図示を省
略したが、前記ケーシング５に中央箇所には開孔４を閉
塞した状態で駆動軸が一体に結合されるようになってい
る。In FIGS. 2 and 3, A is a blade 6.
And a casing 5 are joined together by copper brazing, and B is a joint where the blade 6 and the connecting ring 7 are joined together by copper brazing. Although not shown, a drive shaft is integrally connected to the casing 5 at a central position with the opening 4 closed.
【００１５】本例においては、ろう付け作業の前に、被
ろう付け部材である羽根６の全表面がめっき法又は溶射
法によりろう材金属である銅材にて予め被覆されるよう
になっており、所要膜厚の銅材金属被膜（ろう材金属被
膜）１４が図４に示すように羽根６の全表面上に形成さ
れている。なお、この銅材金属被膜１４の形成方法は、
通常の電気めっき法、溶融めっき法、機械めっき法等の
各種のめっき法であってもよく、また還元材と共に銅材
を溶射するような一般的な溶射法であってもよい。In this example, before the brazing operation, the entire surface of the blade 6 which is the member to be brazed is previously coated with a copper material which is a brazing material metal by a plating method or a thermal spraying method. A copper metal coating (brazing metal coating) 14 having a required film thickness is formed on the entire surface of the blade 6 as shown in FIG. The method of forming the copper material metal film 14 is as follows.
Various plating methods such as an ordinary electroplating method, a hot dip plating method, and a mechanical plating method may be used, or a general thermal spraying method of spraying a copper material together with a reducing material may be used.
【００１６】図５は、ポンプインペラー機構部２の組立
のためのろう付け作業を行なう加熱装置１５を示すもの
であって、この加熱装置１５は上部加熱用の高周波誘導
加熱コイル１６と下部加熱用の高周波誘導加熱コイル１
７と、これらのコイル１６，１７に高周波電力を供給す
る高周波電源１８とから構成されている。また、上述の
各コイル１６，１７は前記複数の羽根６に対応する本体
部１６ａ，１７ａがそれぞれ渦巻状に巻回されており、
これらのリード部１６ｂ，１７ｂを介して前記高周波電
源１８に互いに並列に接続されている。そして、これら
のコイル１６，１７は、前記複数の羽根６に対して僅か
な間隔を隔てて配置されるようになっている。FIG. 5 shows a heating device 15 for performing a brazing work for assembling the pump impeller mechanism portion 2. This heating device 15 is for heating a high frequency induction heating coil 16 and for heating a lower part. High frequency induction heating coil 1
7 and a high frequency power supply 18 for supplying high frequency power to these coils 16 and 17. Further, in the coils 16 and 17 described above, body portions 16a and 17a corresponding to the plurality of blades 6 are respectively wound in a spiral shape,
The high frequency power source 18 is connected in parallel with each other via these lead portions 16b and 17b. The coils 16 and 17 are arranged at a slight distance from the plurality of blades 6.
【００１７】次に、ポンプインペラー機構部２の組立作
業及びその際のろう付け作業の手順について説明する。Next, the procedure of assembling the pump impeller mechanism 2 and brazing at that time will be described.
【００１８】（１） まず、トルクコンバータ１のポン
プインペラー機構部２の構成部材であるケーシング５上
に、所要膜厚の銅材金属被膜１４が予め形成された複数
の羽根６を所定位置に載置してケーシング５の係合凹部
１１，１２内に各羽根６の突起８，９をそれぞれ係合さ
せた状態で組付ける。しかる後に、連結リング７の孔部
１３に各羽根６の突起１０を嵌着させた状態でこの連結
リング７を複数の羽根６の上部箇所に配置する。これに
より、複数の羽根６をケーシング５と連結リング７との
間に位置決めされた状態で組付けて組立体２０（図２参
照）を得る。(1) First, a plurality of blades 6 each having a copper metal coating 14 of a required film thickness formed in advance are mounted at predetermined positions on a casing 5 which is a constituent member of the pump impeller mechanism portion 2 of the torque converter 1. Then, the protrusions 8 and 9 of the blades 6 are assembled in the engaging recesses 11 and 12 of the casing 5 respectively. Thereafter, the connection ring 7 is arranged at the upper part of the plurality of blades 6 with the protrusions 10 of the respective blades 6 fitted in the holes 13 of the connection ring 7. As a result, the plurality of blades 6 are assembled while being positioned between the casing 5 and the connecting ring 7 to obtain the assembly 20 (see FIG. 2).
【００１９】（２） 次に、この組立体（ワーク）２０
を図外の密閉容器内（例えば、１０ -3Ｔｏｒｒ以上の還
元性ガス雰囲気中）に収容して図５に示すようにワーク
受け治具２１上に載置し、上部加熱用の高周波誘導加熱
コイル１６を連結リング７の上部に僅かな間隔を隔てて
配置すると共に、下部加熱用の高周波誘導加熱コイル１
７をケーシング５の下部に僅かな間隔を隔てて配置し、
これによりこれら両コイル１６，１７間に被ろう付け部
材である羽根６、連結リング７及びケーシング５を所定
間隔をもって配置する。(2) Next, this assembly (work) 20
Inside a closed container (for example, 10 -3Return over Torr
The work is stored in the original gas atmosphere) as shown in FIG.
Placed on the receiving jig 21, high frequency induction heating for upper heating
Place the coil 16 above the connecting ring 7 with a slight gap
High frequency induction heating coil 1 for arranging and heating the lower part
7 is arranged at a lower part of the casing 5 with a slight gap,
As a result, the brazed part between these coils 16 and 17
Predetermined blade 6, connecting ring 7 and casing 5
Place at intervals.
【００２０】（３） 次いで、密閉容器の蓋体を閉じ、
真空ポンプにより密閉容器内を所定圧力に真空引きした
後、窒素及び水素の混合ガスにより密閉容器内を置換
し、所要圧力とする。(3) Then, the lid of the closed container is closed,
After the inside of the closed container is evacuated to a predetermined pressure by a vacuum pump, the inside of the closed container is replaced with a mixed gas of nitrogen and hydrogen to a required pressure.
【００２１】（４） この後、高周波電源１８より前記
両コイル１６，１７に所要周波数の高周波電流を流し、
これに応じてケーシング５、連結リング７及び羽根６を
所定のろう付け温度まで同時に誘導加熱する。これによ
り、羽根６の表面に予め形成されている銅材金属被膜１
４を羽根６と共に加熱溶融せしめる。これに伴い、継手
部Ａ，Ｂの近傍の銅材金属層１４が加熱溶融されて羽根
６の表面上を上下両方向に向けて流れ（下方へは重力及
び継手部Ａの空隙部分の毛管作用により、また上方へは
継手部Ｂの空隙部分の毛管作用により流れる）、銅から
成るろう材１４が図６に示すように継手部Ａ，Ｂの両部
に集まる。かくして、図６に示すように、羽根６とケー
シング５との継手部Ａの空隙に溶融状態の銅材がろう材
として流れ込むと共に、羽根６とケーシング５とによっ
て形成された角部の円環状領域にろう材が盛り付けられ
て盛り上がり部１４ａが形成される。一方、羽根６と連
結リング７との継手部Ｂの空隙に溶融状態の銅材がろう
材として流れ込むと共に、羽根６と連結リング７とによ
って形成された角部の円環状領域にろう材が盛り付けら
れて盛り上がり部１４ｂが形成される。これらの盛り上
がり部１４ａ，１４ｂは余盛（補強）としての機能を果
たすこととなる。(4) After that, a high frequency current of a required frequency is made to flow from the high frequency power source 18 to both the coils 16 and 17,
In response to this, the casing 5, the connecting ring 7 and the blades 6 are simultaneously induction heated to a predetermined brazing temperature. As a result, the copper metal coating 1 previously formed on the surface of the blade 6 is formed.
4 and the blades 6 are heated and melted. Along with this, the copper material metal layer 14 in the vicinity of the joints A and B is heated and melted and flows upward and downward on the surface of the blade 6 (downward due to gravity and capillary action of the void portion of the joint A). , And the brazing filler metal 14 made of copper gathers at both parts of the joint parts A and B as shown in FIG. Thus, as shown in FIG. 6, while the molten copper material flows as a brazing material into the space of the joint portion A between the blade 6 and the casing 5, the annular region of the corner portion formed by the blade 6 and the casing 5 is formed. A brazing material is applied to form a raised portion 14a. On the other hand, the molten copper material flows as a brazing material into the gap of the joint portion B between the blade 6 and the connection ring 7, and the brazing material is provided in the annular annular region of the corner formed by the blade 6 and the connection ring 7. As a result, a raised portion 14b is formed. These raised portions 14a and 14b function as extra (reinforcement).
【００２２】（５） 所定のろう付け温度状態を所要時
間にわたって保持した後、前記両コイル１６，１７への
通電を停止し、誘導加熱を終了する。(5) After maintaining a predetermined brazing temperature state for a required time, the energization of the coils 16 and 17 is stopped and the induction heating is finished.
【００２３】（６） 誘導加熱の終了後、被ろう付け部
材である羽根６を所要温度まで冷却し、所要圧力の窒素
ガスを密閉容器内に注入して所要温度（例えば、２００
℃以下）まで冷却する。(6) After the induction heating is completed, the blade 6 which is the member to be brazed is cooled to a required temperature, and nitrogen gas having a required pressure is injected into the closed container to obtain the required temperature (for example, 200).
(Below ℃).
【００２４】（７） この後、真空ポンプを停止し、組
立の完了したポンプインペラー機構部２を密閉容器内か
ら取出す。(7) After that, the vacuum pump is stopped, and the pump impeller mechanism portion 2 that has been assembled is taken out from the closed container.
【００２５】このような本例のろう付け方法を使用した
場合には、被ろう付け部材である羽根６の表面上にろう
材金属から成る堅固に密着した銅材金属被膜１４を形成
するようにしているので、高周波誘導加熱時に電磁力の
作用にて銅材金属被膜１４が動いてしまうようなことが
なく、また銅材金属被膜１４が羽根６に先駆けて誘導加
熱されてしまうことなく羽根６と共に同じ昇温速度で加
熱されることとなる。従って、銅材金属被膜１４は各部
において均一に加熱溶融されて羽根６の継手部Ａ，Ｂす
なわち継手間の空隙にそれぞれ確実に流れ込み、かつ、
継手部Ａ，Ｂの付近にろう材の盛り上がり部１４ａ，１
４ｂを形成することとなるため、良好なろう付けを行な
うことができる。When the brazing method of this embodiment is used, the copper metal coating 14 made of a brazing metal is firmly formed on the surface of the blade 6 as the member to be brazed. Therefore, the copper metal coating 14 does not move due to the action of electromagnetic force during high frequency induction heating, and the copper metal coating 14 is not induction heated prior to the blade 6 At the same time, they are heated at the same temperature rising rate. Therefore, the copper metal coating 14 is uniformly heated and melted in each portion, and surely flows into the joint portions A and B of the blade 6, that is, the space between the joints, and
Raised parts 14a, 1 of brazing material near the joints A, B
Since 4b is formed, good brazing can be performed.
【００２６】以下に、上記実施例の具体的な加工条件を
述べる。加工条件の具体例 （１） トルクコンバータの寸法 〈ア〉 構造部材の外径 ： ２６０ｍｍ 構造部材の高さ ： ６５ｍｍ 〈イ〉 羽根数 ： ３２枚 （２） 羽根の被膜形成条件 〈ア〉 被膜形成方法（被覆方法） ： 銅めっき法 〈イ〉 被膜の厚さ（膜厚） ： １００μｍ （３） 高周波誘導加熱条件 〈ア〉 周波数 ： ７ＫＨｚ 〈イ〉 出力 ： １６０ＫＷ 〈ウ〉 加熱時間 ： ３０秒 〈エ〉 保持時間 ： １０秒 〈オ〉 放冷時間 ： １０秒 〈カ〉 加熱温度 ： １２００℃ （４） 気密容器内の雰囲気条件 〈ア〉 加熱時の置換ガス ： 窒素＋水素（１０％） 又は、 窒素＋一酸化炭素（１０％） 〈イ〉 加熱時の圧力 ： １０Ｔｏｒｒ 〈ウ〉 冷却時の加圧ガス ： 窒素 〈エ〉 冷却時の加圧ガス噴射圧力 ： ６Ｋｇ／ｍｍ2 Specific processing conditions of the above embodiment will be described below. Specific examples of processing conditions (1) Dimensions of torque converter <A> Outer diameter of structural member: 260 mm Height of structural member: 65 mm <B> Number of blades: 32 (2) Blade film forming conditions <A> Film formation Method (Coating method): Copper plating method <B> Coating thickness (film thickness): 100 μm (3) High frequency induction heating conditions <A> Frequency: 7 KHz <B> Output: 160 KW <C> Heating time: 30 seconds < D) Holding time: 10 seconds <E> Cooling time: 10 seconds <F> Heating temperature: 1200 ° C (4) Atmospheric conditions in airtight container <A> Replacement gas during heating: Nitrogen + hydrogen (10%) or , Nitrogen + carbon monoxide (10%) <a> Pressure during heating: 10 Torr <c> Pressurized gas during cooling: Nitrogen <d> Pressurized gas injection pressure during cooling: 6 Kg / mm 2
【００２７】以上、本発明の一実施例につき述べたが、
本発明はこの実施例に限定されるものではなく、本発明
の技術的思想に基づいて各種の変形及び変更が可能であ
る。例えば、既述の実施例では、トルクコンバータ１の
主要構成部材であるポンプインペラー機構部２の組立に
本発明に係るろう付け方法を適用するようにしたが、こ
れに限らず、トルクコンバータ１以外の各種の部品のろ
う付けにも本発明を適用し得ることは言う迄もない。ま
た、ろう材金属としては、銅材に限らず、銀や黄銅等の
他種の金属材を用いることが可能である。The embodiment of the present invention has been described above.
The present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, in the above-described embodiment, the brazing method according to the present invention is applied to the assembly of the pump impeller mechanism portion 2 which is the main constituent member of the torque converter 1, but the present invention is not limited to this and other than the torque converter 1. It goes without saying that the present invention can also be applied to brazing of various parts. Further, the brazing material metal is not limited to the copper material, and other kinds of metal materials such as silver and brass can be used.
【００２８】また、既述の実施例では、被ろう付け部材
（羽根６）の表裏両面に銅材金属被膜１４を形成するよ
うにしたが、その片面（表裏両面のうちの何れか一方の
面）にのみろう材金属被膜１４を形成するようにしても
よい。Further, in the above-described embodiment, the copper metal coating 14 is formed on both the front and back surfaces of the brazed member (blade 6), but one surface (either one of the front and back surfaces) is formed. It is also possible to form the brazing filler metal coating 14 only on ().
【００２９】さらに、密閉容器内を１０-3Ｔｏｒｒ以上
の不活性ガス雰囲気或いは還元性ガス雰囲気としてもよ
く、また真空に保持してもよい。Furthermore, the inside of the closed container may be filled with an inert gas atmosphere of 10 -3 Torr or more or a reducing gas atmosphere, or may be kept in a vacuum.
【００３０】[0030]
【発明の効果】以上の如く、本発明は、被ろう付け部材
の表面上にめっき法或いは溶射法にてろう材金属から成
るろう材金属被膜を形成し、前記被ろう付け部材及びろ
う材金属被膜を高周波誘導加熱することにより前記ろう
材金属被膜を溶融させ、この溶融されたろう材を前記被
ろう付け部材の継手部分の空隙に流れ込ませて前記被ろ
う付け部材の継手部のろう付けを行なうようにしたもの
であるから、ろう材は被ろう付け部材の表面上にめっき
法又は溶射法にて予め堅固に密着形成されているので、
高周波誘導加熱に際してろう材が電磁力の作用にて位置
ずれを生じることがなく、しかも、ろう材及び被ろう付
け部材は同時に同じ昇温速度で高周波誘導加熱されるこ
ととなる。このため、本発明に係るろう付け方法によれ
ば、ろう材が被ろう付け部材に先駆けて加熱されてしま
うようなことがなく、所要のろう付け温度に達した時点
ではろう材が溶融されて継手部間の空隙に良好に入り込
むと共に継手部の周囲にろう材の盛り上がり部が形成さ
れることとなる。その結果、理想的なろう付けを行なう
ことができる。As described above, according to the present invention, a brazing filler metal film made of a brazing filler metal is formed on the surface of a brazing member by a plating method or a thermal spraying method, and the brazing member and the brazing filler metal are formed. The brazing material metal coating is melted by high-frequency induction heating of the coating, and the molten brazing material is caused to flow into the voids in the joint portion of the brazed member to braze the joint portion of the brazed member. Since the brazing filler metal is formed on the surface of the member to be brazed in advance by a plating method or a thermal spraying method,
During the high frequency induction heating, the brazing material is not displaced due to the action of the electromagnetic force, and the brazing material and the brazed member are simultaneously subjected to the high frequency induction heating at the same heating rate. Therefore, according to the brazing method of the present invention, the brazing material is not heated prior to the brazed member, and the brazing material is melted when the required brazing temperature is reached. The swelling portion of the brazing material is formed around the joint portion while well entering into the space between the joint portions. As a result, ideal brazing can be performed.
【００３１】また、一般的には良好なろう付けを行いに
くいとされている銅ろう付けに本発明を適用した場合に
も理想的なろう付けを行なうことができる。この場合に
は、安価な銅材から成るろう材を利用でき、しかも複数
の複雑形状部材であっても一度のろう付け工程により理
想的な高強度のろう付けを行なうことが可能となる。従
って、本発明に係るろう付け方法は、利用価値が高く、
産業上極めて有益なものである。Also, when the present invention is applied to copper brazing, which is generally considered difficult to perform good brazing, ideal brazing can be performed. In this case, an inexpensive brazing material made of a copper material can be used, and even with a plurality of members having complicated shapes, an ideal high-strength brazing can be performed by a single brazing process. Therefore, the brazing method according to the present invention has high utility value,
It is extremely useful in industry.
【図１】本発明に係るろう付け方法にてろう付けが施さ
れるトルクコンバータのポンプインペラー機構部を示す
平面図である。FIG. 1 is a plan view showing a pump impeller mechanism of a torque converter to be brazed by a brazing method according to the present invention.
【図２】図１におけるＸ−Ｘ線断面図である。FIG. 2 is a sectional view taken along line XX in FIG.
【図３】図１におけるＹ−Ｙ線拡大断面図である。3 is an enlarged cross-sectional view taken along the line YY in FIG.
【図４】被ろう付け部材である羽根の断面図である。FIG. 4 is a cross-sectional view of a blade that is a brazed member.
【図５】ポンプインペラー機構部の羽根を高周波誘導加
熱によりろう付けする装置の断面図である。FIG. 5 is a cross-sectional view of a device for brazing the blades of the pump impeller mechanism by high frequency induction heating.
【図６】羽根をろう付けした状態を示す断面図である。FIG. 6 is a sectional view showing a state in which the blade is brazed.
１ トルクコンバータ ２ ポンプインペラー機構部 ５ ケーシング ６ 被ろう付け部材としての羽根 ７ 連結リング ８，９，１０ 突起 １１，１２ 係合凹部 １４ 銅材金属被膜（ろう材金属被膜） １４ａ，１４ｂ 盛り上がり部 １５ 加熱装置 １６ 上部加熱用の高周波誘導加熱コイル １７ 下部加熱用の高周波誘導加熱コイル １８ 高周波電源 ２０ 組立体 Ａ，Ｂ 継手部 DESCRIPTION OF SYMBOLS 1 Torque converter 2 Pump impeller mechanism part 5 Casing 6 Blade as brazed member 7 Connecting ring 8, 9, 10 Protrusion 11, 12 Engagement recess 14 Copper material metal film (brazing material metal film) 14a, 14b Raised part 15 Heating device 16 High frequency induction heating coil for upper heating 17 High frequency induction heating coil for lower heating 18 High frequency power supply 20 Assembly A, B Joint part
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０５Ｂ 6/10 ３３１ Ｈ０５Ｂ 6/10 ３３１ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location H05B 6/10 331 H05B 6/10 331
Claims (4)
器内に収納配置し、前記気密容器内を不活性ガス雰囲気
或いは還元性ガス雰囲気、又は真空に保持し、前記被ろ
う付け部材の継手部を高周波誘導加熱によりろう付けす
る方法において、前記被ろう付け部材の表面上にめっき
法或いは溶射法にてろう材金属から成るろう材金属被膜
を形成し、前記被ろう付け部材及びろう材金属被膜を高
周波誘導加熱することにより前記ろう材金属被膜を溶融
させ、この溶融されたろう材を前記被ろう付け部材の継
手部分の空隙に流れ込ませて前記被ろう付け部材の継手
部のろう付けを行なうようにしたことを特徴とするろう
付け方法。1. A joint of the members to be brazed, wherein a member to be brazed to be brazed is housed and arranged in an airtight container, and the inside of the airtight container is maintained in an inert gas atmosphere, a reducing gas atmosphere, or a vacuum. In a method of brazing a part by high-frequency induction heating, a brazing material metal coating made of a brazing material metal is formed on the surface of the brazing member by a plating method or a thermal spraying method, and the brazing member and the brazing material metal are formed. The brazing material metal coating is melted by high-frequency induction heating of the coating, and the molten brazing material is caused to flow into the voids in the joint portion of the brazed member to braze the joint portion of the brazed member. Brazing method characterized in that.
う材金属被膜を形成するようにしたことを特徴とする請
求項１に記載のろう付け方法。2. The brazing method according to claim 1, wherein the brazing metal coating is formed on the entire surface of the brazed member.
み前記ろう材金属被膜を形成するようにしたことを特徴
とする請求項１に記載のろう付け方法。3. The brazing method according to claim 1, wherein the brazing metal coating is formed only on one surface of the brazed member.
た前記被ろう付け部材を１０-3Ｔｏｒｒ以上の還元性ガ
ス雰囲気中に保持し、高周波誘導加熱にて前記ろう材金
属被膜を溶融させて成るろう材により前記被ろう付け部
材の継手部のろう付けを行なうようにしたことを特徴と
する請求項１乃至３の何れか１項に記載のろう付け方
法。4. The brazing material metal film formed on the surface is held in a reducing gas atmosphere of 10 −3 Torr or more, and the brazing material metal film is melted by high frequency induction heating. The brazing method according to any one of claims 1 to 3, wherein the brazing material is brazed to the joint portion of the brazed member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12971296A JPH09314319A (en) | 1996-05-24 | 1996-05-24 | Brazing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12971296A JPH09314319A (en) | 1996-05-24 | 1996-05-24 | Brazing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09314319A true JPH09314319A (en) | 1997-12-09 |
Family
ID=15016348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12971296A Pending JPH09314319A (en) | 1996-05-24 | 1996-05-24 | Brazing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09314319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115770916A (en) * | 2022-12-20 | 2023-03-10 | 中国科学院宁波材料技术与工程研究所 | Brazing method of rare earth permanent magnet |
-
1996
- 1996-05-24 JP JP12971296A patent/JPH09314319A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115770916A (en) * | 2022-12-20 | 2023-03-10 | 中国科学院宁波材料技术与工程研究所 | Brazing method of rare earth permanent magnet |
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