CN108274145A - Medicine core belt carcass braze-welding rings, the bicyclic sub-assembly of soldering and its application method - Google Patents
Medicine core belt carcass braze-welding rings, the bicyclic sub-assembly of soldering and its application method Download PDFInfo
- Publication number
- CN108274145A CN108274145A CN201810163830.4A CN201810163830A CN108274145A CN 108274145 A CN108274145 A CN 108274145A CN 201810163830 A CN201810163830 A CN 201810163830A CN 108274145 A CN108274145 A CN 108274145A
- Authority
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- China
- Prior art keywords
- medicine core
- solder
- braze
- belt carcass
- core
- 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.)
- Granted
Links
- 239000003814 drug Substances 0.000 title claims abstract description 127
- 238000003466 welding Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 14
- 125000002619 bicyclic group Chemical group 0.000 title claims abstract description 13
- 238000005476 soldering Methods 0.000 title claims abstract description 12
- 229940079593 drug Drugs 0.000 title description 8
- 229910000679 solder Inorganic materials 0.000 claims abstract description 110
- 238000005219 brazing Methods 0.000 claims abstract description 51
- 230000004907 flux Effects 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical class [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
-
- 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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
This application involves a kind of medicine core belt carcass braze-welding rings, the bicyclic sub-assembly of soldering and its application methods, include a solder core filaments in the tubular structure that medicine core belt carcass braze-welding rings are surrounded by medicine core solder band, medicine core solder band both-side ends are connect with solder core filaments, and cavity fills brazing flux between medicine core solder band and solder core filaments.The outside and/or inside of medicine core belt carcass braze-welding rings are annular flat face.It is brazed bicyclic sub-assembly and is had from above-mentioned medicine core belt carcass braze-welding rings and inside and constituted with the flat ring of the medicine core of butt seam, be annular flat face on the inside of medicine core belt carcass braze-welding rings.The medicine core solder band both-side ends of medicine core belt carcass braze-welding rings with solder core filaments junction outwardly or downward.The application is simple for structure, pass through the junction gap of medicine core belt carcass braze-welding rings and the butt seam of the flat ring of medicine core, solder and base material contact surface and heat conduction efficiency are improved while avoiding brazing flux and air haptoreaction, brazing flux flows out after heating is reacted from gap, it is preferential to reach base material surface, achieve the effect that brazing flux preferential reaction.
Description
Technical field
The present invention relates to a kind of medicine core belt carcass braze-welding rings, the bicyclic sub-assembly of soldering and its application methods.
Background technology
Medicine core solder is compared as a kind of novel solder that brazing flux and solder is compound with conventional solder, is had in use
Have the advantages that much to protrude.Traditional when needing to be welded using the solder of brazing flux, process is：Allocate brazing flux-painting
Weld-ring-heating-pickling-cleaning is covered-preheat-assembles, welding sequence is complicated, it is difficult to meet automated production transformation and require.
Brazing flux is all polluted the environment using excess and postwelding pickling simultaneously.When being brazed using medicine core solder, it need to only add after mounting
Heat fusing, the lower medicine core solder of part brazing flux dosage, can be without overpicklings, directly due to being remained substantially without postwelding
It is used after washing, reduces the discharge of brazing flux and acid solution.Medicine core solder can improve Automation of Welding as one kind, environmental-friendly
Solder, receive the very big welcome of user, but still have some problems in preparing use.
It is that current medicine core solder section is predominantly round first, in induction brazing, section is circular solder and mother
Material contact is less, and heat conduction efficiency is low, is susceptible to the excessively high problem of base material temperature；Secondly, the brazing flux of medicine core solder, which faces, to be kept away
Exempt from the dual limitation of the moisture absorption and preferential reaction, brazing flux should be reduced to the greatest extent after flux-cored wire molding and be contacted with air, avoid the moisture absorption
Oxidation, but in brazing process, brazing flux needs preferential reaction, spreads over base material surface, removes oxide layer.
To solve the problems, such as the brazing flux moisture absorption, seamless flux-cored wire is mainly used at present, such as in Patent No.：
A kind of non-circular seamless medicine core silver wire in " 201520230603.0 " section and Patent No.：" 201510406488.2 " are a kind of
Seamless flux-cored wire and its processing method are all mentioned is prepared as hollow pipe using extruding, adds brazing flux drawing molding.But it is this
Form is difficult to realize the requirement of brazing flux preferential reaction, and can face brazing flux in the preparation and difficult, dress powder following process difficulty is added
The problem of.
Meanwhile it is less to be prepared into the copper-based type of the cricoid solder of medicine core at present, affects the popularization of medicine core solder product, it is special
Not being the Cu-Zn series solder medicine core weld-ring containing Mn, Ni successfully uses not having on the market.
Invention content
The technical problem to be solved by the present invention is to provide a kind of simple for structure, convenient and practical, brazing flux preferentially reaches base material table
The medicine core belt carcass braze-welding rings of face and reaction, the bicyclic sub-assembly of soldering and its application method.
Technical solution includes used by the application solves above-mentioned technical problem：
A kind of medicine core belt carcass braze-welding rings, it is characterized in that a solder core filaments are accommodated in the tubular structure surrounded by medicine core solder band,
Medicine core solder band both-side ends（Towards after same lateral bend）It is connect with solder core filaments（Overlap joint）, medicine core solder band and solder core filaments it
Between cavity fill brazing flux, this medicine core belt carcass braze-welding rings can avoid brazing flux and air haptoreaction in storage and transportation process,
Prevent brazing flux from leaking；Meanwhile in use, the closed position of medicine core belt carcass braze-welding rings（Medicine core solder band both-side ends with
Solder core filaments junction, usually U-shaped gap and normal slot）It is directed at pad, greatly improves solder and base material and/or heating
Utensil contact surface and heat conduction efficiency, the gap that brazing flux can quickly between medicine core solder band and solder core filaments after heating is reacted
Middle outflow, preferential to reach base material surface, brazing flux reacts on base material surface, achievees the effect that brazing flux preferential reaction.
The medicine core belt carcass braze-welding rings use copper-based medicine core solder band, and Mn, Ni member are added on the basis of Cu-Zn brazing filler metals
Element, and the addition of Mn, Ni element, can increase wetability of the solder on compressor liquid storage device pipeline, at the same Ni elements plus
Entering can be with the tensile strength of reinforcing joint.
Preferably, the content of Mn is 0.05-15%（Mass percent is referred both to, similarly hereinafter）, the content of Ni is 0.005-6%,
Higher than the range, solder is relatively low by medicine core ring forming rate, is less than the range, multicomponent alloy effect of optimization unobvious.
By further preferred range, the addition of Mn is 0.05-11%, and the additive amount of Ni is 0.05-5%.
The tubular structure that medicine core solder band surrounds has junction（Medicine core solder band both-side ends are connect with solder core filaments
Place）Gap, for the ease of the outflow of brazing flux after weld heating, according to the difference of the interstitial site of soldering and rigging position, the company
The direction in the place of connecing gap can be configured as needed, most common to be directed towards inside, outside or lower section.
The application solder core filaments are used with medicine core solder with identical component, can increase solder using same solder core filaments
Loading reduces the thickness of medicine core solder band, easy to process.The lower solder alloy of fusion temperature can also be used as solder core
Silk, makes solder core filaments be melted in advance in being brazed heating process, accelerates the outflow of brazing flux.
Technical solution further includes used by the application solves above-mentioned technical problem：
A kind of bicyclic sub-assembly of soldering, has structure with the flat ring of the medicine core of butt seam from above-mentioned medicine core belt carcass braze-welding rings and inside
At the inside of medicine core belt carcass braze-welding rings is annular flat face.The outside of the flat ring of medicine core is annular flat face, in the flat ring of medicine core
Fill brazing flux.
The medicine core solder band both-side ends of the medicine core belt carcass braze-welding rings with solder core filaments junction outwardly or downward.
The solder core filaments of the medicine core belt carcass braze-welding rings, the medicine core solder carrying material phase of medicine core solder band and the flat ring of medicine core
Together.
The medicine core belt carcass braze-welding rings are interference fitted with the flat ring of medicine core.
As a kind of special case, the flat ring of the medicine core, medicine core belt carcass braze-welding rings section, which are four angles, has arc transition
Rectangle, i.e., they all directions it is flat, be conducive to assembly and it is big with soldered part contact surface.
Technical solution further includes used by the application solves above-mentioned technical problem：
A kind of application method of the bicyclic sub-assembly of soldering, it is characterized in that including the following steps：
The exterior medicine core belt carcass braze-welding rings of the flat ring of medicine core, the butt seam of the flat ring of medicine core inwardly, the medicine core of medicine core belt carcass braze-welding rings
Solder band both-side ends and solder core filaments junction are outwardly or downward；
Weld heating, brazing flux reaction in the flat ring of medicine core and the outflow and preferential from butt seam（Relative in the flat ring of medicine core
Solder）Reach part to be welded surface, the brazing fluxes of medicine core belt carcass braze-welding rings is from junction（Gap）It flows out and preferential（Relative to medicine
Solder in core ribbon core braze-welding rings）Reach part to be welded surface；
The flat ring of medicine core, medicine core belt carcass braze-welding rings solder well sprawl and be welded and fixed on part to be welded.
The application is simple for structure, and junction gap and medicine core are constituted by medicine core solder band both sides and solder core filaments overlap joint
The butt seam of flat ring improves solder and base material contact surface and heat transfer effect while avoiding brazing flux and air haptoreaction
Rate, brazing flux flows out after heating is reacted from gap, preferential to reach base material surface, achievees the effect that brazing flux preferential reaction.
Description of the drawings
Fig. 1 is the flat ring structure schematic diagram of the embodiment of the present application medicine core；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is enlarged diagram at the B of Fig. 2；
Fig. 4 is the embodiment of the present application use state diagram；
Fig. 5 is the embodiment of the present application medicine core belt carcass braze-welding rings structural schematic diagram.
Fig. 6 is the C-C sectional views of Fig. 5.
Fig. 7 is enlarged diagram at the D of Fig. 6.
Specific implementation mode
For the application embodiment as shown in Fig. 1~Fig. 7, there is butt seam 12 in inside（It is copper-based）The flat ring of medicine core I（Referring to figure
1~Fig. 3）By solder metal tape（Solder）1, brazing flux 2 forms, and the solder metal tape 1 in flat I inside of ring of medicine core and/or outside is processed
For cyclic annular burnishing surface（Annular flat face, referring to the upper and lower part of Fig. 3, outside, the linear form of inside cross-sectional are non-through
Normal arc, and both sides are arc）, inside by the solder metal tape 1 bending constitute, formed butt seam 12（In face of base material
4）.The flat ring of the medicine core I is assembled in the inner tube 41 of tubular mother metals 4, when heated, base material 4 and/or the heat warp for heating utensil
Contact surface is conducted to the flat ring I of medicine core, and the reaction of brazing flux 2 is simultaneously flowed out from butt seam 12, and the flat ring I of medicine core melts later, and solder exists
It is well sprawled on base material 4.
There is junction gap 13 in a kind of outside（It is copper-based）Medicine core belt carcass braze-welding rings II（Referring to Fig. 5~Fig. 7）By solder gold
Belong to band 1, brazing flux 2, solder core filaments 3 to form, solder metal tape 1 surrounds a solder core filaments 3, both sides after solder metal tape 1 is bent
End 11 connects and composes U-shaped junction gap 13 with solder core filaments 3.After machine-shaping, brazing flux 2 is sealed in solder metal tape
1 and solder core filaments 3 formed cavity in, carry store when, brazing flux 2 will not and air reaction, will not leak.When welding adds
When hot, 4 outer tube 42 of base material and/or the heat for heating utensil are conducted through contact surface to medicine core belt carcass braze-welding rings II, solder metal tape 1
End 11 is very thin with 3 connecting portion of solder core filaments and takes the lead in melting, the reaction of brazing flux 2 and from solder metal tape 1 and solder core filaments 3
Junction gap 13 is flowed out, and medicine core belt carcass braze-welding rings II melt later, and solder is well sprawled on base material 4, and solder core filaments 3 can adopt
With solder identical with external solder metal tape 1.The application solder core filaments 3 can be used and the identical material of external medicine core solder band 1
Material or the lower solder alloy of fusion temperature.
When practical application, when welding compressor liquid storage device pipeline, assembly outside the flat ring of medicine core I as shown in figure 4, can assemble medicine
Core ribbon core braze-welding rings II（Also it is in flat ring-type）.Wherein flat I butt seam 13 of ring of medicine core is towards 4 inner tube 41 of base material, inside and female
4 inner tube 41 of material is in close contact, and the junction gap 13 of medicine core belt carcass braze-welding rings II is outwardly（Or downward）.The contact surface of two flat rings is flat
It is whole, it is interference fit between flat ring, will not be slided after assembly.When weld heating, brazing flux 2 is reacted and is flowed from butt seam 12
Go out, brazing flux 2 preferentially corresponds to surface up to 4 inner tube 41 of base material in the flat ring I of medicine core, and the brazing fluxes 2 of medicine core belt carcass braze-welding rings II is from junction
Outflow covering 4 outer tube 42 of base material of gap 13 corresponds to surface, and solder can well be sprawled on base material 4.Use two medicine core weld-rings
Welding manner can obviously increase filling amount of metal, be highly suitable for the welding of wide arc gap weld seam.Pricker in the welding process simultaneously
Agent 2 optimizes the using effect of brazing flux 2 respectively towards inside and outside both direction relative priority in wrapping up its solder outflow.
The medicine core solder band 1 of the flat ring of the solder core filaments 3 of the application medicine core belt carcass braze-welding rings II, medicine core solder band 1 and medicine core I
Material identical, used alloying component embodiment are as follows：
The soldering that the present embodiment can be used for compressor liquid storage device pipeline uses, and meets the requirement of product strength and soldering processes.This
Apply for the gap（Containing butt seam 12 and junction gap 13）Refer to endless hermetically sealed but brazing flux 2 can be prevented when not heating
The fine crack of leakage does not leak usually to reach, the purpose that brazing flux 2 preferentially flows out when heating.
The simple deformation of every the application or combination, it is considered that fall into the protection domain of the application.
Claims (10)
1. a kind of medicine core belt carcass braze-welding rings, it is characterized in that：It included a solder core in the tubular structure surrounded by medicine core solder band
Silk, medicine core solder band both-side ends are connect with solder core filaments, and cavity fills brazing flux between medicine core solder band and solder core filaments.
2. medicine core belt carcass braze-welding rings according to claim 1, it is characterized in that：The medicine core solder band both-side ends and solder core
Silk junction has junction gap, and the medicine core solder band main component is Cu, Zn, Mn, Ni, and the content of Mn is medicine core band
The content of the 0.05%-15% of core braze-welding rings gross mass, Ni are the 0.005%-6% of medicine core belt carcass braze-welding rings gross mass.
3. medicine core belt carcass braze-welding rings according to claim 2, it is characterized in that：The content of the Mn is that medicine core belt carcass braze-welding rings are total
The content of the 0.05%-11% of quality, Ni are the 0.05%-5% of medicine core belt carcass braze-welding rings gross mass.
4. medicine core belt carcass braze-welding rings according to claim 1, it is characterized in that：The outside and/or inside of medicine core belt carcass braze-welding rings are
Annular flat face.
5. medicine core belt carcass braze-welding rings according to claim 1, it is characterized in that：The solder core filaments use and medicine core solder band
The lower solder alloy of different fusion temperatures.
6. a kind of bicyclic sub-assembly of soldering, it is characterized in that：The medicine core belt carcass described in Claims 1 to 5 any claim is brazed
Ring and inside have the flat ring cooperation of the medicine core of butt seam to constitute, and the inside of medicine core belt carcass braze-welding rings is annular flat face, and medicine core is flat
Brazing flux is filled in ring.
7. it is brazed bicyclic sub-assembly according to claim 6, it is characterized in that：The medicine core solder band of the medicine core belt carcass braze-welding rings
Both-side ends and solder core filaments junction are outwardly or downward.
8. it is brazed bicyclic sub-assembly according to claim 6, it is characterized in that：The medicine core belt carcass braze-welding rings and the flat ring mistake of medicine core
It is full of cooperation.
9. it is brazed bicyclic sub-assembly according to claim 6, it is characterized in that：The outside of the flat ring of medicine core is annular flat
Face.
10. the application method of the bicyclic sub-assembly of soldering described in a kind of claim 6~9 any claim, it is characterized in that including
Following steps：
The exterior medicine core belt carcass braze-welding rings of the flat ring of medicine core, the butt seam of the flat ring of medicine core inwardly, the medicine core of medicine core belt carcass braze-welding rings
Solder band both-side ends and solder core filaments junction are outwardly or downward；
Weld heating, brazing flux reaction in the flat ring of medicine core and outflow and preferential arrival part to be welded surface from butt seam,
The brazing flux of medicine core belt carcass braze-welding rings, which is flowed out with solder core filaments junction and preferentially reached from medicine core solder band both-side ends, to be soldered
Portion faces；
The flat ring of medicine core, medicine core belt carcass braze-welding rings solder well sprawl and be welded and fixed on part to be welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163830.4A CN108274145B (en) | 2018-02-27 | 2018-02-27 | Flux cored brazing ring, brazing double ring assembly and method of use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163830.4A CN108274145B (en) | 2018-02-27 | 2018-02-27 | Flux cored brazing ring, brazing double ring assembly and method of use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108274145A true CN108274145A (en) | 2018-07-13 |
| CN108274145B CN108274145B (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810163830.4A Active CN108274145B (en) | 2018-02-27 | 2018-02-27 | Flux cored brazing ring, brazing double ring assembly and method of use thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108274145B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158792A (en) * | 2018-10-15 | 2019-01-08 | 广东美的制冷设备有限公司 | Weld-ring, workpiece, heat exchanger and air conditioner |
| CN114101826A (en) * | 2020-08-28 | 2022-03-01 | 富士电机株式会社 | Brazing filler metal member and brazing method |
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|---|---|---|---|---|
| CN109158792A (en) * | 2018-10-15 | 2019-01-08 | 广东美的制冷设备有限公司 | Weld-ring, workpiece, heat exchanger and air conditioner |
| CN114101826A (en) * | 2020-08-28 | 2022-03-01 | 富士电机株式会社 | Brazing filler metal member and brazing method |
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| CN108274145B (en) | 2023-10-31 |
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