CN107363358B - A method of improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength - Google Patents
A method of improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength Download PDFInfo
- Publication number
- CN107363358B CN107363358B CN201710593174.7A CN201710593174A CN107363358B CN 107363358 B CN107363358 B CN 107363358B CN 201710593174 A CN201710593174 A CN 201710593174A CN 107363358 B CN107363358 B CN 107363358B
- Authority
- CN
- China
- Prior art keywords
- iron boron
- neodymium iron
- neodymium
- boron
- soldering
- 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 - Fee Related
Links
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
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- 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
- B23K35/3006—Ag as the principal constituent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses the methods of a kind of raising neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength, belong to welding and interconnection technique field.Neodymium-iron-boron magnetic material face to be brazed is subjected to geometry optimization design and Alloying Treatment, then applies silver-base solder heating soldering in a vacuum.Silver-base solder ingredient is by mass percentage (wt.%) are as follows: copper (Cu) 20-35%, indium (In) 5-15%, tin (Sn) 2-10%, neodymium (Nd) 0.1-0.5%, surplus is silver-colored (Ag), and joint gap is filled up after brazing filler metal melts and forms round and smooth fillet, soldered fitting molding is preferable, soldering joint strength reaches 45-50MPa, and soldered fitting has no cracking after falling 60 times.
Description
Technical field
The present invention relates to the soldering processes of a kind of neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material with
Method, using middle layer and structure design reduce soldered fitting interface residual stress, thus reach improve neodymium iron boron and steel it is heterogeneous
Material or neodymium iron boron and neodymium iron boron homogeneous material soldering joint strength, belong to welding and interconnection technique field.
Background technique
Neodymium iron boron is one kind with intermetallic compound Nd2Fe14High-performance rare-earth permanent magnet material based on B, main component
(mass percent wt.%) contains neodymium 30%, boron 1%, and surplus is iron.Neodymium-iron-boron magnetic material has excellent magnetic property, is it
His permanent-magnet material is irreplaceable, wide in fields such as aerospace, digital electric, computer technology, automobile and petrochemical industries
General use.Neodymium-iron-boron magnetic material using advanced powder processed and sintering technology development has high magnetic energy product and coercivity,
Compared with Agglutinate neodymium-iron-boron magnetic material and injection molding neodymium-iron-boron magnetic material, the magnetic property of sintered Nd-Fe-B magnetic material is optimal.
Sintered Nd-Fe-B magnetic material is difficult to manufacture large scale and complex-shaped component, Er Qieji using powder metallurgical technique
Tool processing difficulties cause its practical application to have been more limited, only by by neodymium iron boron and steel or neodymium iron boron and neodymium
Iron boron connects, and can just give full play to the excellent magnetic property of neodymium-iron-boron magnetic material, meet the needs of modern manufacturing industry.Neodymium iron
Boron magnetic material is hard and crisp, and plasticity and toughness are poor, and surface easily aoxidizes and corrodes, and weldability is very poor.Currently, neodymium-iron-boron magnetic material system
Make various magnet products mainly has epoxy resin to bond and be mechanically connected method by the way of connection or assembling.Adhering with epoxy resin
Connector is more crisp, and antistripping, cracking resistance, shock resistance and durability are poor, it has been reported that the bonding of neodymium-iron-boron magnetic material
Connector room temperature shearing strength τ: 25-35MPa, bending strength σbb: 23-30MPa, tensile strength sigma: 30-50MPa is far below neodymium iron
Boron magnetic material self-strength (bending strength σbb: 250MPa, compressive strength σbc: 1100MPa, tensile strength sigma: 75MPa).Machine
Tool connection method includes being bolted, rivet and being socketed.Mechanical joining methods are simple, cheap；But mechanical joining methods dock
Head design requirement is higher, and neodymium-iron-boron magnetic material otherwise can be made to concentrate the destruction for leading to connector in locally generation stress；Neodymium iron boron
Magnetic material is fragile material, also easily makes material itself by " injury " using mechanical connection, meanwhile, using mechanical joining methods
The magnet product of manufacture can cause connector to relax due to thermal expansion during operation, and mechanical connecting joint very may not be used
It leans on.
In recent years, it as welding technique is innovated and welds continuing to bring out for new material, is connected or is assembled using welding technique
Various magnet products gradually cause researcher to pay close attention to, and it is different using welding technique connection neodymium iron boron and steel to have more paper reports
Material or neodymium iron boron and neodymium iron boron homogeneous material, correlative study are delivered in a variety of periodicals, see (1) Metals, and 2016,6
(202): 1-9；(2) Tsinghua University's journal (natural science edition), 2014,54 (6): 1138-1142；〔3〕
J.Mater.Proc.Technol, 2010,210:885-891 etc..Related patents have Chinese patent CN105057827A and
CN102179626A etc..The welding technique that above-mentioned paper and patent are related to has laser welding, brazing and diffusion welding to connect, and studies work
Work has preliminary understanding to the weldability of neodymium-iron-boron magnetic material, but the durability of Welded Joints and reliability shortage make us letter
The authentic data of clothes is supported.It is larger with the thermal expansion coefficient difference of metal since the thermal expansion coefficient of neodymium-iron-boron magnetic material is small,
When therefore connecting neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material by welding technique, connector area can be generated
Biggish thermal residual strain, reduces the mechanical property of connector, and bursting apart for welding point is resulted even in when serious.Neodymium iron boron and steel
The welding of dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material is one and is widely paid close attention to but failed by industry and solved very well
Key technical problem.
Summary of the invention
The object of the present invention is to provide the prickers of a kind of neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
Welding and method are reduced the interface residual stress of soldered fitting using middle layer and structure design, improve the residual of soldered fitting
Residue stress distribution improves neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material soldered fitting to reach
Intensity.
The soldering processes of a kind of neodymium iron boron of the present invention and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
With method, core technology is: middle layer and structure design and the solder suitable for being brazed neodymium-iron-boron magnetic material.(1) intermediate
Layer and structure design can reduce the residual stress due to caused by material thermal expansion coefficient difference；(2) solder is to neodymium-iron-boron
Property material have preferable wettability.
Above-mentioned purpose of the invention adopts the following technical scheme that realization:
A method of neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength being improved, using middle layer and structure
Design reduces the interface residual stress of soldered fitting, improves the residual stress distribution state of soldered fitting, realizes neodymium iron boron and steel
Dissimilar materials or neodymium iron boron are reliably connected with neodymium iron boron homogeneous material, the specific process steps are as follows:
The first step carries out the optimization design of geometry to neodymium-iron-boron magnetic material face to be brazed, by Neodymium iron boron magnetic material
Expect that surface to be brazed processes the technology groove of certain specification, separation d1=100-800 μm, groove width d2=40-80 μm,
Groove depth is h=40-80 μm；
Second step, determines middle layer, and middle layer uses the preferable anaerobic copper foil of plasticity, 30-40 μm of thickness；
Third step carries out Alloying Treatment to neodymium-iron-boron magnetic material face to be brazed,
After carrying out cleaning treatment to neodymium-iron-boron magnetic material and middle layer anaerobic copper foil surface, by neodymium-iron-boron magnetic material
Face to be brazed and middle layer anaerobic copper foil are assembled together by fixture is put into Alloying Treatment in vacuum drying oven, Alloying Treatment
Afterwards, room temperature is cooled to the furnace；
4th step determines the solder ingredient of soldering neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material,
Solder ingredient is by mass percentage (wt.%) are as follows: copper (Cu) 20-35%, indium (In) 5-15%, tin (Sn) 2-
10%, neodymium (Nd) 0.1-0.5%, surplus are silver-colored (Ag), by purity are 99.99% according to said components and its mass percent
Ag, Cu, In, Sn and Nd metal are according to being designed to the Al that is placed in2O3In crucible, melting is formed in a vacuum furnace, smelting temperature 850
DEG C, smelting time 10min cools to room temperature with the furnace, takes out melting solder, is processed into thin shape by mechanical means；
5th step, soldering, is waited for the neodymium iron boron that Alloying Treatment is crossed is placed in a thickness of 100-120 μm thin shape silver-base solder
It in the brazed seam of soldering, is then assembled using fixture, realizes neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneity
The soldering of material；After soldering, using 1-5 DEG C/min of cooling velocity, when temperature is cooled to 300 DEG C, 1-2h is kept the temperature, then cold with furnace
But to room temperature, i.e. completion soldering connection.
Alloying Treatment technological parameter described in step 3 is vacuum degree 2.0 × 10-3Pa, 5-10 DEG C of heating speed/min are first
It is first preheated, 300-500 DEG C of preheating temperature, keeps the temperature 20 minutes；Then alloying process, alloying temperature 700-900 are carried out
DEG C, soaking time 2-4h.
Brazing process described in step 5 is to carry out in a vacuum furnace, vacuum degree 2.0 × 10-3Pa, 5-10 DEG C of heating speed/
Min, 700-900 DEG C of brazing temperature, soaking time 5-15min.
The thermal expansion coefficient of neodymium-iron-boron magnetic material is small, larger with the thermal expansion coefficient difference of metal, soldering connection neodymium iron
When boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material, connector area can generate biggish thermal residual strain, and reduction connects
The mechanical property of head, results even in bursting apart for welding point when serious.Neodymium-iron-boron magnetic material face to be brazed carries out alloying
Processing, on the one hand can reduce residual stress, another aspect neodymium-iron-boron magnetic material by means of the elastic-plastic deformation of middle layer
Improve the wetability in face to be brazed after Alloying Treatment.In neodymium-iron-boron magnetic material surface alloying treatment process, neodymium iron boron with
Metallurgy action will occur for the contact interface of middle layer, form alloying interface, and the effect of trace alloying element can seriously affect magnetic
The magnetic property of property material, therefore, the use of middle layer cannot influence neodymium-iron-boron while reducing soldered fitting residual stress
The magnetic property of property material.Cu not only can preferably alleviate the residual stress generated due to thermal expansion coefficient difference as middle layer, but also
The magnetic property of neodymium-iron-boron magnetic material can be effectively improved.Reasonable structure design can slow down stress concentration, in certain journey
Connector residual stress is reduced on degree.The solder for being brazed neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material is silver
Base solder, silver-base solder of the present invention are added to a small amount of neodymium (Nd), and neodymium is active element, can be with during solder wetting
The liquid-solid interfacial tension of liquid silver-base solder and neodymium iron boron is reduced, improves silver-base solder to the wettability of neodymium iron boron；The present invention
The silver-base solder addition indium and Theil indices are higher, it is therefore an objective to which the solid-liquid phase line for further decreasing silver-base solder avoids being brazed
Temperature influences the magnetic property of neodymium-iron-boron magnetic material in the process.
Compared with prior art, the beneficial effects of the present invention are:
The soldering processes of a kind of neodymium iron boron of the present invention and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
With method, the residual stress due to caused by material thermal expansion coefficient difference can reduce by middle layer and structure design；Together
When, silver-base solder of the present invention to after neodymium-iron-boron magnetic material alloying surface and the steel capital have fabulous wetability,
Joint gap is filled up after brazing filler metal melts, forms round and smooth fillet, obtained soldered fitting mechanical property with higher.
Detailed description of the invention
Fig. 1 is the technology groove on neodymium-iron-boron magnetic material face to be brazed.
Fig. 2 is neodymium iron boron and steel dissimilar materials soldered fitting structure.
Fig. 3 is neodymium iron boron and neodymium iron boron homogeneous material soldered fitting structure.
Fig. 4 is neodymium iron boron and steel dissimilar materials soldered fitting test specimen.
In figure: 1- neodymium iron boron, 2- middle layer, 3- solder, 4- steel
Specific embodiment
The embodiment being given by the following further is specifically described the method for the present invention.
The soldering processes of a kind of neodymium iron boron of the present invention and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
It is the optimization design that geometry is carried out to neodymium-iron-boron magnetic material face to be brazed first, then to Neodymium iron boron magnetic with method
Material face to be brazed carries out Alloying Treatment, on the one hand can preferably alleviate since the remnants that thermal expansion coefficient difference generates are answered
On the other hand power also improves the brazing property in neodymium-iron-boron magnetic material face to be brazed.A kind of neodymium iron boron of the present invention with
The soldering processes and method of steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material, the solder are silver-base solder, solder
Ingredient is by mass percentage (wt.%) are as follows: copper (Cu) 20-35%, indium (In) 5-15%, tin (Sn) 2-10%, neodymium (Nd)
0.1-0.5%, surplus are silver-colored (Ag).
The soldering processes of a kind of neodymium iron boron of the present invention and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
With method, comprise the following steps that:
The first step carries out the optimization design of geometry to neodymium-iron-boron magnetic material face to be brazed.By Neodymium iron boron magnetic material
Expect that surface to be brazed processes the technology groove of certain specification, separation d1=100-800 μm, groove width d2=40-80 μm,
Groove depth is h=40-80 μm.
Second step determines middle layer.Middle layer use the preferable anaerobic copper foil of plasticity, 30-40 μm of thickness.
Third step carries out Alloying Treatment to neodymium-iron-boron magnetic material face to be brazed.
After carrying out cleaning treatment to neodymium-iron-boron magnetic material and middle layer anaerobic copper foil surface, by neodymium-iron-boron magnetic material
Face to be brazed and middle layer anaerobic copper foil are assembled together by fixture is put into Alloying Treatment in vacuum drying oven, Alloying Treatment work
Skill parameter is vacuum degree 2.0 × 10-3Pa, 5-10 DEG C of heating speed/min, is preheated first, 300-500 DEG C of preheating temperature, is protected
Temperature 20 minutes；Then alloying process is carried out, 700-900 DEG C of alloying temperature, soaking time 2-4h；After Alloying Treatment,
Cool to room temperature with the furnace.
4th step determines the solder ingredient of soldering neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material.
Solder ingredient is by mass percentage (wt.%) are as follows: copper (Cu) 20-35%, indium (In) 5-15%, tin (Sn) 2-
10%, neodymium (Nd) 0.1-0.5%, surplus are silver-colored (Ag).It by purity is 99.99% according to said components and its mass percent
Ag, Cu, In, Sn and Nd metal are according to being designed to the Al that is placed in2O3In crucible, melting is formed in a vacuum furnace, smelting temperature 850
DEG C, smelting time 10min cools to room temperature with the furnace, takes out melting solder, is processed into thin shape by mechanical means.
5th step, soldering.
Neodymium iron boron that Alloying Treatment is crossed brazed seam to be brazed will be placed in a thickness of 100-120 μm thin shape silver-base solder
It is interior, it is then assembled using fixture, realizes the soldering of neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material.
Brazing process is to carry out in a vacuum furnace, vacuum degree 2.0 × 10-3Pa, 5-10 DEG C of heating speed/min, brazing temperature 700-900
DEG C, soaking time 5-15min；After soldering, using 1-5 DEG C/min of cooling velocity, when temperature is cooled to 300 DEG C, 1- is kept the temperature
2h, then cool to room temperature with the furnace, that is, complete soldering connection.
The soldering processes of a kind of neodymium iron boron of the present invention and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
With method, following all embodiments are all made of above-mentioned processing step and parameter and silver-base solder obtains.Sintered NdFeB is magnetic
Material test specimen is having a size of length (a)=5mm, wide (b)=6mm, height (c)=4mm；
Thickness (H)=1.2mm.Embodiment see the table below 1.
1 middle layer of table, joint structure design, the performance of solder ingredient and its soldered fitting
The soldering processes of a kind of neodymium iron boron of the present invention and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
Neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneity are carried out according to above-mentioned processing step and solder ingredient with method
Material soldering, connector technical indicator achieved:
(1) joint gap is filled up after brazing filler metal melts and forms round and smooth fillet, and soldered fitting molding is preferable；
(2) GB/TGB/T 11363-2008 soldering joint strength test method, soldering joint strength reach according to national standards
To 45-50MPa；(3) method of fall-down test is to be lifted to sample after 4m height to fall with acceleration of gravity as Vertical Free
Body movement, under fall on a rigid substrates and collide, soldered fitting has no cracking after falling 60 times.
Claims (3)
1. a kind of method for improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength, which is characterized in that in use
Interbed and structure design reduce the interface residual stress of soldered fitting, improve the residual stress distribution state of soldered fitting, realize
Neodymium iron boron and steel dissimilar materials or neodymium iron boron are reliably connected with neodymium iron boron homogeneous material, the specific process steps are as follows:
The first step carries out the optimization design of geometry to neodymium-iron-boron magnetic material face to be brazed, neodymium-iron-boron magnetic material is waited for
Soldering surface processes the technology groove of certain specification, separation d1=100-800 μm, groove width d2=40-80 μm, groove depth
Degree is h=40-80 μm；
Second step, determines middle layer, and middle layer uses the preferable anaerobic copper foil of plasticity, 30-40 μm of thickness；
Third step carries out Alloying Treatment to neodymium-iron-boron magnetic material face to be brazed,
After carrying out cleaning treatment to neodymium-iron-boron magnetic material and middle layer anaerobic copper foil surface, neodymium-iron-boron magnetic material is waited for into pricker
The face of weld and middle layer anaerobic copper foil are assembled together by fixture is put into Alloying Treatment in vacuum drying oven, after Alloying Treatment, with
Furnace is cooled to room temperature；
4th step determines the solder ingredient of soldering neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material,
Solder ingredient is by mass percentage (wt.%) are as follows: copper (Cu) 20-35%, indium (In) 5-15%, tin (Sn) 2-10%,
Neodymium (Nd) 0.1-0.5%, surplus are silver-colored (Ag), according to said components and its mass percent be 99.99% by purity Ag,
Cu, In, Sn and Nd metal are according to being designed to the Al that is placed in2O3In crucible, melting is formed in a vacuum furnace, and 850 DEG C of smelting temperature,
Smelting time 10min cools to room temperature with the furnace, takes out melting solder, is processed into thin shape by mechanical means；
5th step, soldering are to be brazed by the neodymium iron boron that Alloying Treatment is crossed is placed in a thickness of 100-120 μm thin shape silver-base solder
Brazed seam in, then assembled using fixture, realize neodymium iron boron and steel dissimilar materials or neodymium iron boron and neodymium iron boron homogeneous material
Soldering；After soldering, using 1-5 DEG C/min of cooling velocity, when temperature is cooled to 300 DEG C, 1-2h is kept the temperature, then cool to the furnace
Room temperature, i.e. completion soldering connection.
2. a kind of side for improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength according to claim 1
Method, which is characterized in that Alloying Treatment technological parameter described in step 3 is vacuum degree 2.0 × 10-3Pa, 5-10 DEG C of heating speed/
Min is preheated first, 300-500 DEG C of preheating temperature, keeps the temperature 20 minutes；Then alloying process, alloying temperature are carried out
700-900 DEG C, soaking time 2-4h.
3. a kind of raising neodymium iron boron according to claim 1 or 2 and steel or neodymium iron boron and neodymium iron boron soldering joint strength
Method, which is characterized in that brazing process described in step 5 is to carry out in a vacuum furnace, vacuum degree 2.0 × 10-3Pa, heating speed
5-10 DEG C/min, 700-900 DEG C of brazing temperature, soaking time 5-15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593174.7A CN107363358B (en) | 2017-07-20 | 2017-07-20 | A method of improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593174.7A CN107363358B (en) | 2017-07-20 | 2017-07-20 | A method of improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107363358A CN107363358A (en) | 2017-11-21 |
| CN107363358B true CN107363358B (en) | 2019-03-29 |
Family
ID=60307315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710593174.7A Expired - Fee Related CN107363358B (en) | 2017-07-20 | 2017-07-20 | A method of improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107363358B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776934A (en) * | 2021-08-05 | 2021-12-10 | 长江存储科技有限责任公司 | Method for measuring bonding strength and sample |
| CN114633218B (en) * | 2022-03-04 | 2023-09-19 | 贵州捷盛钻具股份有限公司 | Surface treatment method and device for drill rod and drill rod manufacturing method |
| CN114833410B (en) * | 2022-07-05 | 2022-10-14 | 中机智能装备创新研究院(宁波)有限公司 | Method for reducing residual stress of heterogeneous brazed joint |
| CN115229290B (en) * | 2022-07-08 | 2023-05-12 | 九江七所精密机电科技有限公司 | Welding method for ultra-thick oxygen-free copper large-size workpiece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916831A1 (en) * | 1999-04-14 | 2000-10-19 | Peter Krull | Combined neodymium-YAG laser and TIG welding process employs specified parameters for welding steel sheets coated with metallic, organic and/or inorganic materials |
| KR20120077082A (en) * | 2010-12-30 | 2012-07-10 | 주식회사 성우하이텍 | A laser welding method |
| CN105057918A (en) * | 2015-09-09 | 2015-11-18 | 钢铁研究总院 | Strap-shaped brazing material for rare earth iron-based permanent magnet and preparation method of strap-shaped brazing material |
| CN105057827A (en) * | 2015-09-09 | 2015-11-18 | 钢铁研究总院 | Welding method for sintered NdFeB permanent magnets |
| CN106862740A (en) * | 2017-01-18 | 2017-06-20 | 安徽大地熊新材料股份有限公司 | A kind of preparation method of Sintered NdFeB surface high-corrosion-resistance high-bond coating |
-
2017
- 2017-07-20 CN CN201710593174.7A patent/CN107363358B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916831A1 (en) * | 1999-04-14 | 2000-10-19 | Peter Krull | Combined neodymium-YAG laser and TIG welding process employs specified parameters for welding steel sheets coated with metallic, organic and/or inorganic materials |
| KR20120077082A (en) * | 2010-12-30 | 2012-07-10 | 주식회사 성우하이텍 | A laser welding method |
| CN105057918A (en) * | 2015-09-09 | 2015-11-18 | 钢铁研究总院 | Strap-shaped brazing material for rare earth iron-based permanent magnet and preparation method of strap-shaped brazing material |
| CN105057827A (en) * | 2015-09-09 | 2015-11-18 | 钢铁研究总院 | Welding method for sintered NdFeB permanent magnets |
| CN106862740A (en) * | 2017-01-18 | 2017-06-20 | 安徽大地熊新材料股份有限公司 | A kind of preparation method of Sintered NdFeB surface high-corrosion-resistance high-bond coating |
Non-Patent Citations (1)
| Title |
|---|
| SPCC钢与NdFeB永磁体的激光点焊;常保华等;《清华大学学报(自然科学版)》;20081130;第48卷(第11期);第1904-1907页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107363358A (en) | 2017-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107363358B (en) | A method of improving neodymium iron boron and steel or neodymium iron boron and neodymium iron boron soldering joint strength | |
| Chang et al. | Brazing of 6061 aluminum alloy/Ti–6Al–4V using Al–Si–Cu–Ge filler metals | |
| CN101693326B (en) | Silver free copper-base brazing filler metal used for braze welding of stainless iron/copper/stainless steel | |
| CN101284336B (en) | Argon-arc welding-braze welding composite welding method for connecting the titanium alloy and steel | |
| CN109623201B (en) | Nickel-based brazing filler metal for nickel-based high-temperature alloy brazing and preparation method thereof | |
| CN105499833A (en) | High-temperature brazing material for brazing tungsten-copper alloy and copper or copper alloy and brazing method of high-temperature brazing material | |
| CN107931885B (en) | A kind of Nd-Fe-B permanent magnet copper base brazing material and preparation method thereof | |
| CN113478040B (en) | Active brazing method for improving performance of graphite/copper dissimilar material joint | |
| CN110369906B (en) | Metal flux-cored wire for welding T2 copper and 304 stainless steel and preparation method thereof | |
| Kim et al. | Growth Behavior of Intermetallic Compounds in Various Solder Joints Induced by Electromigration | |
| CN106392368A (en) | High-temperature Zn-based soft solder for soldering aluminum and copper and welding method | |
| JP5962461B2 (en) | Au-Ge-Sn solder alloy | |
| CN108161276B (en) | High-entropy flux-cored wire for magnesium-steel MIG welding and preparation method thereof | |
| CN105965176B (en) | For soldering tungsten-copper alloy and the Ni base chilling solders and soldering processes of stainless steel | |
| CN113732563A (en) | Transition layer welding wire for preparing titanium-steel gradient composite material CMT and preparation method | |
| Liu et al. | Effect of Au-Sn IMCs’ formation and morphologies on shear properties of laser reflowed micro-solder joints | |
| CN113399860B (en) | Nickel-based welding wire for copper-steel composite plate transition layer and preparation method thereof | |
| CN204342868U (en) | A kind of powder metallurgy diffusion welding target | |
| CN105057827A (en) | Welding method for sintered NdFeB permanent magnets | |
| CN108161263B (en) | Argon arc welding-brazing composite welding method | |
| Subramanian et al. | Physical metallurgy in lead-free electronic solder development | |
| Peng et al. | Microstructure of Sn-20In-2.8 Ag solder and mechanical properties of joint with Cu | |
| CN1313240C (en) | Shape memory Co-Zn-Al alloy grains reinforced composite Sn-Ag welding material and its prepn process | |
| CN107627044B (en) | Multi-element zinc tin copper bismuth neodymium brazing filler metal for brazing sintered neodymium iron boron and steel and preparation process thereof | |
| CN110666394A (en) | Titanium-based amorphous solder with low welding temperature and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 Termination date: 20210720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |