CN106270872A - A kind of vacuum induction composite brazing method - Google Patents
A kind of vacuum induction composite brazing method Download PDFInfo
- Publication number
- CN106270872A CN106270872A CN201610774695.8A CN201610774695A CN106270872A CN 106270872 A CN106270872 A CN 106270872A CN 201610774695 A CN201610774695 A CN 201610774695A CN 106270872 A CN106270872 A CN 106270872A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- vacuum chamber
- workpiece
- soldering
- brazing
- 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.)
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/002—Soldering by means of induction heating
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
Abstract
A kind of open vacuum induction composite brazing method of the present invention.The method comprises the steps: a, by the workpiece to be welded assembled, be placed in induction installation without the solder of brazing flux, afterwards induction installation is placed in vacuum chamber；B, open vacuum control unit, vacuum chamber is extracted into 10‑4Pa‑10‑2Pa vacuum；C, open sensing heating control apparatus, heated parts, be heated to more than described solder liquidus temperature 30 DEG C 80 DEG C, after insulation 2s 8s, stop heating.When d, workpiece naturally cool to room temperature, opening vacuum chamber air intake installation, when the intrinsic pressure power of vacuum chamber is identical with ambient pressure, open vacuum chamber, take out workpiece, soldering completes.The method using the present invention without brazing flux and need not clean soldering work piece, with induction installation heating, workpiece is heated rapidly to brazing temperature under vacuum, completes soldering, be greatly saved the holding time, improve soldering efficiency after insulation；Method is simple, energy-saving and emission-reduction.
Description
Technical field
The present invention relates to soldering processes, especially relate to a kind of vacuum-sensing composite brazing method.
Background technology
Conventional soldering is to use the solder lower than mother metal fusion temperature, takes less than mother metal solidus higher than solder liquid phase
The operation temperature of line, a kind of solder technology mother metal linked together by the solder of fusing.For brazing filler metal melts is realized pricker
Weldering, it usually needs overall or local heated parts realizes brazing process.The thermal source that can be used for soldering heating is a lot of such as, flame
Heating, salt bath heating, resistance heating, sensing heating, heating by electric cooker, Infrared Heating, LASER HEATING etc..Heating by electric cooker also includes
Vacuum electric furnace heats.Application sensing heating and vacuum electric furnace heating soldering (vacuum brazing) technique are the solderers that purposes is the widest
Skill.
Vacuum brazing equipment be use resistance wire produce resistance heat as thermal source heating furnace vacuum brazing heat set
Standby.Including vacuum brazing furnace and vacuum system.Vacuum brazing homogeneous heating, weldment deformation is little, little without brazing flux post welding distortion, can
For various metals and the soldering of alloy.But the heat transfer modes of vacuum brazing belongs to radiant heat transfer, heat transfer efficiency is low, so vacuum
Soldering is long for heat time heating time, and soldering efficiency is low.
Induction brazing is that the resistance heat utilizing faradic current in weldment realizes.Induction heating mode is different from other
Mode of heating, is not, by environment or medium, heat is passed to workpiece, but by induction coil, high frequency or power frequency electric energy is defeated by gold
Metal work-pieces, senses the turbine heating of generation within the workpiece, is carrying out melting solder and being allowed to sprawl of a kind of self-heating.Sensing pricker
Soldering set has energy transmission to concentrate, and intensification is exceedingly fast, and can carry out the advantages such as local soldering.But the shortcoming of induction brazing is usually greatly
Carrying out soldering under compression ring border, weldment has oxidation tendency, typically need to realize brazing process by brazing flux striping.Operator is had by brazing flux
Evil, and pollute environment, postwelding it is frequently necessary to clean, to reduce the corrosion that brazing flux causes.
Summary of the invention
It is an object of the invention to provide realize under a kind of vacuum condition the quick soldering of workpiece technique vacuum-sensing be combined
Method for welding.The advantage of vacuum brazing and induction brazing is combined by the method for the present invention, the shortcoming eliminating both, it is achieved work
The method for welding that part quickly heats without brazing flux under vacuo.
The purpose of the present invention can take following technical proposals to realize:
Vacuum of the present invention-sensing composite brazing method comprises the steps:
A, by the workpiece to be welded assembled, be placed in induction installation without the solder of brazing flux, afterwards induction installation is placed on
In vacuum chamber；
B, open vacuum control unit, vacuum chamber is extracted into 10-4Pa-10-2Pa vacuum；
C, open sensing heating control apparatus, heated parts, be heated to more than described solder liquidus temperature 30 DEG C-80 DEG C, protect
After temperature 2s-8s, stop heating；
When d, workpiece naturally cool to room temperature, open vacuum chamber air intake installation, when the intrinsic pressure power of vacuum chamber is identical with ambient pressure,
Opening vacuum chamber, take out workpiece, soldering completes.
Beneficial effects of the present invention is as follows:
The method using the present invention without brazing flux and need not clean soldering work piece, the product quality of soldering of the present invention and by biography
The product quality indifference that the vacuum brazing of system is welded.Under vacuum, heat with induction installation, can be quick by workpiece
It is heated to brazing temperature, completes soldering after insulation, be greatly saved the holding time, improve soldering efficiency.Method for welding is simple,
Energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the vacuum-sensing composite brazing method equipment therefor schematic diagram of the present invention.
Sequence number explanation in figure: 1, vacuum chamber, 2, induction installation, 3, workpiece, 4, solder.
Detailed description of the invention
The present invention is further described below with reference to embodiment (accompanying drawing):
As it is shown in figure 1, in the method for the invention, vacuum chamber 1 can make workpiece 3 to be welded be in vacuum environment, this environment
Middle harmful gas is few, and workpiece 3 and solder (solder) will not aoxidize in heating process, and vacuum environment is to workpiece protected effect
Good；Under vacuum conditions, the absorption gas in surface both and inside can be along with heating in vacuum for the workpiece 3 assembled and solder 4
And separate out, i.e. initial performances is good.Induction installation 2, for heated parts 3, melts solder 4.Sensing firing rate block, the shortest
Time in, workpiece 3 can be realized and solder 4 is rapidly heated, after reaching brazing temperature, solder 4 melts, the short time insulation after soldering
Complete.Vacuum-sensing composite brazing method, can realize workpiece and the most not be rapidly completed soldering, pricker by brazing flux
The weldering time is short, and protected effect is good, and uses without brazing flux, and postwelding need not clean, ultrahigh in efficiency compared with traditional vacuum brazing.
Embodiment 1
Select the foil-like BAl90SiMg solder of 0.15mm, soldering 3A21 aluminium alloy: lamellar solder 4 is placed on workpiece 3 soldering
Position, both are placed in induction installation 2 after assembling.Open vacuum-control(led) system, vacuum chamber 1 is carried out evacuation, works as vacuum
In chamber 1, vacuum reaches 10-3During Pa, opening sensing heating control apparatus, heat 8s, workpiece temperature reaches 620 DEG C, is incubated 5s
After, stop heating.When workpiece naturally cools to room temperature, open vacuum chamber air intake installation, when the intrinsic pressure power of vacuum chamber and extraneous pressure
When power is identical, opening vacuum chamber 1, take out workpiece 3, soldering completes.
When selecting the vacuum brazing of prior art, when the time used includes pumpdown time, zone heating time, insulation
Between, temperature fall time, time about 8h used by the same workpiece of soldering.Vacuum-sensing the composite brazing using the present invention compares vacuum brazing
The saving time 85%, soldering efficiency is greatly improved.The 3A21 brazed seam smooth surface of vacuum-sensing composite brazing, zero defect, soldering
Quality is good.
Embodiment 2
The foil-like BAg72Cu solder of selection 0.1mm, soldering Q235 mild steel: lamellar solder 4 is placed on workpiece 3 soldering places,
Both are placed in induction installation 2 after assembling.Vacuum-control(led) system, by evacuation in vacuum chamber 1, reaches 10-3Pa vacuum
Time, to open sensing heating control apparatus, heat 5s, workpiece temperature reaches 800 DEG C, after insulation 8s, stops heating.When workpiece is natural
When being cooled to room temperature, open vacuum chamber air intake installation, when the intrinsic pressure power of vacuum chamber is identical with ambient pressure, opens vacuum chamber 1, take
Going out workpiece 3, soldering completes.
When selecting the vacuum brazing of prior art, when the time used includes pumpdown time, zone heating time, insulation
Between, temperature fall time, time about 10h used by the same workpiece of soldering.Vacuum-sensing the composite brazing using the present invention compares vacuum brazing
The saving time 90%, soldering efficiency is greatly improved.The Q235 mild steel brazed seam smooth surface of soldering, zero defect, brazing quality is good
Good.
Embodiment 3
Select the foil-like BCu97NiB solder of 0.2mm, soldering 2Cr17 rustless steel: lamellar solder 4 is placed on workpiece 3 soldering position
Putting, both are placed in induction installation after assembling.Vacuum-control(led) system, to evacuation in vacuum chamber 1, reaches 10-3Pa vacuum
Time, to open induction installation 2, heat 9s, workpiece 3 temperature reaches 1120 DEG C, after insulation 6s, stops heating.When workpiece 3 natural cooling
During to room temperature, open vacuum chamber 1 air intake installation, when pressure is identical with ambient pressure in vacuum chamber 1, open vacuum chamber 1, take out
Workpiece 3, soldering completes.
When selecting the vacuum brazing of prior art, when the time used includes pumpdown time, zone heating time, insulation
Between, temperature fall time, time about 15h used by the same workpiece of soldering.Vacuum-sensing the composite brazing using the present invention compares vacuum brazing
The saving time 90%, soldering efficiency is greatly improved.The 2Cr17 rustless steel brazed seam smooth surface of soldering, zero defect, brazing quality is good
Good.
Claims (1)
1. vacuum-sensing composite brazing method, it is characterised in that: it comprises the steps:
A, by the workpiece to be welded assembled, be placed in induction installation without the solder of brazing flux, afterwards induction installation is placed on
In vacuum chamber；
B, open vacuum control unit, vacuum chamber is extracted into 10-4Pa-10-2Pa vacuum；
C, open sensing heating control apparatus, heated parts, be heated to more than described solder liquidus temperature 30 DEG C-80 DEG C, protect
After temperature 2s-8s, stop heating；
When d, workpiece naturally cool to room temperature, open vacuum chamber air intake installation, when the intrinsic pressure power of vacuum chamber is identical with ambient pressure,
Opening vacuum chamber, take out workpiece, soldering completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774695.8A CN106270872A (en) | 2016-08-31 | 2016-08-31 | A kind of vacuum induction composite brazing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774695.8A CN106270872A (en) | 2016-08-31 | 2016-08-31 | A kind of vacuum induction composite brazing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106270872A true CN106270872A (en) | 2017-01-04 |
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ID=57673543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610774695.8A Pending CN106270872A (en) | 2016-08-31 | 2016-08-31 | A kind of vacuum induction composite brazing method |
Country Status (1)
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| CN (1) | CN106270872A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019100746A1 (en) * | 2019-01-14 | 2020-07-16 | Faurecia Emissions Control Technologies, Germany Gmbh | Method and device for soldering at least two components and assembly |
| CN111906399A (en) * | 2020-07-01 | 2020-11-10 | 中国电子科技集团公司第十一研究所 | Single-side welding method for slab gain medium |
| CN115722749A (en) * | 2022-11-16 | 2023-03-03 | 深圳市森国科科技股份有限公司 | Local induction heating diffusion welding method and power module packaging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597219A (en) * | 2004-09-08 | 2005-03-23 | 华侨大学 | Preparation method of single layer soldering diamond tool |
| CN1792531A (en) * | 2005-12-30 | 2006-06-28 | 哈尔滨工业大学 | Filling composite welding flux vibrating liquid phase welding method for non-continuous strengthening aluminium base composite material |
| CN203292646U (en) * | 2013-05-15 | 2013-11-20 | 郑州机械研究所 | High-frequency induction vacuum brazing furnace |
| CN103769712A (en) * | 2013-12-31 | 2014-05-07 | 吴江亿泰真空设备科技有限公司 | Vacuum brazing furnace |
| CN104690389A (en) * | 2015-02-06 | 2015-06-10 | 郑州机械研究所 | Active brazing device and brazing method for preparing diamond-copper composite material by using same |
| CN104708159A (en) * | 2013-12-11 | 2015-06-17 | 中国科学院宁波材料技术与工程研究所 | Preparation method for diamond tool |
-
2016
- 2016-08-31 CN CN201610774695.8A patent/CN106270872A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597219A (en) * | 2004-09-08 | 2005-03-23 | 华侨大学 | Preparation method of single layer soldering diamond tool |
| CN1792531A (en) * | 2005-12-30 | 2006-06-28 | 哈尔滨工业大学 | Filling composite welding flux vibrating liquid phase welding method for non-continuous strengthening aluminium base composite material |
| CN203292646U (en) * | 2013-05-15 | 2013-11-20 | 郑州机械研究所 | High-frequency induction vacuum brazing furnace |
| CN104708159A (en) * | 2013-12-11 | 2015-06-17 | 中国科学院宁波材料技术与工程研究所 | Preparation method for diamond tool |
| CN103769712A (en) * | 2013-12-31 | 2014-05-07 | 吴江亿泰真空设备科技有限公司 | Vacuum brazing furnace |
| CN104690389A (en) * | 2015-02-06 | 2015-06-10 | 郑州机械研究所 | Active brazing device and brazing method for preparing diamond-copper composite material by using same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019100746A1 (en) * | 2019-01-14 | 2020-07-16 | Faurecia Emissions Control Technologies, Germany Gmbh | Method and device for soldering at least two components and assembly |
| CN111906399A (en) * | 2020-07-01 | 2020-11-10 | 中国电子科技集团公司第十一研究所 | Single-side welding method for slab gain medium |
| CN115722749A (en) * | 2022-11-16 | 2023-03-03 | 深圳市森国科科技股份有限公司 | Local induction heating diffusion welding method and power module packaging method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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