CN107639341A - High-performance spin friction Welding for different alloys - Google Patents
High-performance spin friction Welding for different alloys Download PDFInfo
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- CN107639341A CN107639341A CN201711118672.2A CN201711118672A CN107639341A CN 107639341 A CN107639341 A CN 107639341A CN 201711118672 A CN201711118672 A CN 201711118672A CN 107639341 A CN107639341 A CN 107639341A
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Abstract
The present invention relates to a kind of high-performance spin friction Welding for different alloys, it is the technique for carrying out spin friction weldering to pole shape mother metal, after the technique is coordinated by the specific upsetting force of setup algorithm and rotating speed, contacted with each other in the presence of friction pressure by welding end face, rubbed by relative motion, mechanical energy is converted into heat energy, joint is softened rapidly using frictional heat, the oxide at interface is removed in the presence of upsetting force and forms good welding point.Elements diffusion is regulated and controled by heat by welding workpieces such as the steel of red copper 45 prepared by the process, joint second-phase strength can be effectively improved, and obtain fine grained texture.Compared to other spin friction welding procedures, the spin friction Welding of the present invention has the advantages that joint mechanical property is good, welding efficiency is high, weak side metallicity improves, and the process stabilizing is efficient, securely and reliably, hold out broad prospects development in terms of commercial Application.
Description
Technical field
The invention belongs to metal welding field, and in particular to a kind of high-performance spin friction welder for different alloys
Skill.
Background technology
At present, copper is as a kind of important non-ferrous metal, because its good electric conductivity, thermal conductivity and normal temperature and low temperature are moulded
Property is widely used in industry.But with the exploitation and utilization of copper resource, hold at high price, be unfavorable for pushing away on a large scale
Extensively.And price of steel product relative moderate, it is one of structural material being most widely used in industrial circle.The composite junction of copper and steel
Structure, industrial requirement can be met.
In modern industrial production, single metal material tends not to meet industrial demand, therefore dissimilar metal
The component of material is gradually taken seriously.Wherein the especially hardware demand such as rod pipe is big, does not have in the welding of large pipe bar
There is a kind of appropriate method to improve production efficiency and meet its bonding strength requirement, small-sized tubing is mainly also using ratio-frequency welding
The method connect, but it corresponds only to specific welding material because technological parameter debugging is cumbersome and technological process is complicated, then revolves
Turn friction welding (FW) can and meet its application demand, the domestic and foreign scholars of spin friction weldering have been grasped certain methods and achieved
Many achievements.Result of study from domestic and foreign scholars to copper/steel, either using fusion welding, soldering or diffusion welding (DW), all
The connection of copper and steel can be realized.The advantages of friction welding (FW), has：Joint quality is high, welding efficiency is high, pollution is small and is easily achieved certainly
Dynamic metaplasia production.But existing friction-welding technique is confined to welding material and technological coefficient, it is difficult to by technique adjustment, and
Postwelding, which can leave weld defect, makes the performance of welding point impacted, and these welding methods have strict requirements, in reality
There is limitation in the application of border.
The content of the invention
It is an object of the invention to optimize spin friction Welding, there is provided a kind of high-performance rotary friction for different alloys
Welding is wiped, it is the technique that spin friction weldering is carried out to pole shape mother metal, and the technique passes through the specific upset pressure of setup algorithm
After power coordinates with rotating speed, contacted with each other in the presence of friction pressure by welding end face, interface is removed in the presence of upsetting force
Oxide, rubbed by relative motion, mechanical energy is converted into heat energy, joint is softened rapidly using frictional heat,
Regulate and control two kinds of metallic elements by heat in softening process to spread, joint can be effectively improved and form tiny non-equilibrium precipitation
Second phase, is heat-treated in welding process to metal, and the dislocation in friction process occurs to tie again with heat collective effect
Crystalline substance, fine grained texture is obtained, forms good welding point.Compared to other spin friction welding procedures, rotary friction of the invention
Wiping Welding has the advantages that joint mechanical property is good, welding efficiency is high, weak side metallicity improves, and the process stabilizing is high
Effect, securely and reliably.
Technical scheme of the present invention has the characteristics that compared with currently available technology：
In technological process of the present invention, prepare A classes bar and material of the B classes bar as welding, it can use and sets
Standby device has：Fixing end fixture, supply side fixture, supply side spindle feeding driving device, rotating driving device, longitudinal transition zone
Telescopic arm, support meanss etc., fixing end A rods, supply side are B rods, and its weld diameter scope is φ 6~φ 20mm, spindle revolutions
Scope is 1200r/min~6000r/min, and feed pressure scope is 1kN~5kN, and major parameter can be by being calculated, A, B
Transition material can be added according to welding bar between rod.
The technology characteristics are：Welding main welding parameters are the speed of mainshaft, feed speed, the first level friction time, two
Level fraction time, first level friction pressure, second level friction pressure, upset dwell time, upsetting force；
The technology characteristics are：The size of first level friction pressure is about the 1/2 of second level friction pressure；
The technology characteristics are：The determination method of upsetting force is Fd=k*g*s/1000, and wherein Fd is upsetting force,
K is a value range, and about between 16~26, g is acceleration of gravity, and s is the area of frictional contact surface；
The technology characteristics are：A classes bar is not more than 500 DEG C with B class bars melting point difference；
The technology characteristics are：The essential element phasor Ac3 lines median and welding point of A classes bar and B class bars
Temperature gap is not less than 100 DEG C；
The technology characteristics are：Spindle revolutions and feed pressure can dynamic regulation, different process demand can be completed；
The technology characteristics are：If A bars are identical with B diameter of rod, contact jaw hardness it is relatively low be placed on fixation
End；If direct size is different, diameter difference must not exceed 6mm, and the less bar fusing point of diameter need to be higher than another mother metal,
Supply side clamping is welded；
Brief description of the drawings
Fig. 1 is red copper and the mother metal microscopic structure of 45 steel spin frictions weldering welding in present example one；
Fig. 2 is red copper and the heat affected area microscopic structure of 45 steel spin frictions weldering welding in present example one；
Fig. 3 is 45 steel in present example two and the microscopic structure at 1.2333 mould steel spin friction welding lines；
Fig. 4 is that the micro- of 1.2333 mould steel mother metals is welded in 45 steel and 1.2333 mould steel spin frictions in present example two
Tissue；
Embodiment
Embodiment one, a kind of red copper and 45 steel spin friction welding methods, detailed process comprise the following steps：
Step 1, prepare before welding：A diameter of 14mm red copper and 45 Steel Bars is selected, it is 75mm/ to be processed into length
115mm；And interfacial mechanical to be welded is machined to roughness Ra≤3.2 μm；Degreased and impurity using the cleaning of acetone ultrasonic wave,
Welding parameter is adjusted, it is stand-by；
Step 2, weld：Using red copper as fixing end, 45 steel are as round end according to spin friction welding machine rotating speed 3000r/
Min, axis feeding speed 12mm/min, first level friction time 8s, second level friction time 6s, first level friction pressure 6kN, two level are rubbed
Pressure 15kN, upset dwell time 3s are wiped, upsetting force 3.3kN technological parameter is welded, finally obtains copper side and fully send out
The copper covered steel composite welding joint of raw plastic deformation；
After tested, the tensile strength of gained joint reaches 285MPa, and the hardness number of commissure reaches 210.3HV, is better than copper mother
Material；
Embodiment two, a kind of material are the mould steel spin friction welding methods of 45 steel/1.2333, and detailed process includes following
Step：
Step 1, prepare before welding：A diameter of 14mm 45 steel and 1.2333 mould Steel Bars are selected, are processed into length
Spend for 75mm/115mm；And interfacial mechanical to be welded is machined to roughness Ra≤3.2 μm；Oil removing is gone using the cleaning of acetone ultrasonic wave
Dirty and impurity, it is stand-by；
Step 2, weld：Turn 45 steel as fixing end, 1.2333 mould steel as round end according to spin friction welding machine
Fast 3000r/min, axis feeding speed 12mm/min, first level friction time 8s, second level friction time 4s, first level friction pressure
8kN, second level friction pressure 17kN, upset dwell time 3s, upsetting force 2.5kN technological parameter are welded, finally obtained
The crimping composite welding joint that both sides are fully plastically deformed；
After tested, the tensile strength of gained welding point reaches 680MPa, and the hardness number of commissure reaches 800HV, higher than both sides
Mother metal.
Claims (8)
1. for the high-performance spin friction Welding of different alloys, prepare A classes bar and material of the B classes bar as welding
Material, its available devices device have：Fixing end fixture, supply side fixture, supply side spindle feeding driving device, rotation driving dress
Put, longitudinal transition zone telescopic arm, support meanss etc., fixing end A rods, supply side is B rods, and its weld diameter scope is 6~φ of φ
20mm, spindle revolutions scope are 1200r/min~6000r/min, and feed pressure scope is 1kN~5kN, can root between its A, B rod
Transition material is added according to welding bar.
2. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：Welding master
It is the speed of mainshaft to want welding parameter, feed speed, fraction time, friction pressure, the upset dwell time, upsetting force.
3. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：According to rubbing
The operation principle and lot of experiment validation of welding machine are wiped, the size of first level friction pressure is about the 1/2 of second level friction pressure.
4. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：Upset pressure
The determination method of power is Fd=k*g*s/1000, and wherein Fd is upsetting force, and k is a value range, about between 16~26,
G is acceleration of gravity, and s is the area of frictional contact surface.
5. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：A class rods
Material is not more than 500 DEG C with B class bars melting point difference.
6. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：A class rods
The essential element phasor Ac of material and B class bars3Line median is not less than 100 DEG C with welding point temperature gap.
7. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：Main shaft turns
Number with feed pressure can dynamic regulation, different process demand can be completed.
8. the high-performance spin friction Welding according to claim 1 for different alloys, it is characterised in that：If A rods
Material is identical with B diameter of rod, then what contact jaw hardness was relatively low is placed on fixing end；If direct size is different, diameter differs not
6mm must be exceeded, and the less bar fusing point of diameter need to be higher than another mother metal, be welded in supply side clamping.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551102A (en) * | 2018-11-30 | 2019-04-02 | 重庆英杰贝尔机械制造有限公司 | A kind of welding method of YG8 hard alloy and 40Cr structural steel |
| CN112207420A (en) * | 2020-09-25 | 2021-01-12 | 北京科技大学 | Method for heterogeneous rotary friction welding of titanium alloy and steel |
| CN112496521A (en) * | 2020-11-10 | 2021-03-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Improve Ti2Welding and heat treatment method for welding seam quality of AlNb alloy |
| CN113894508A (en) * | 2021-11-04 | 2022-01-07 | 山东大学 | Riveting auxiliary rotary friction welding process and application of dissimilar metal bar |
| CN114473175A (en) * | 2022-02-10 | 2022-05-13 | 山东大学 | Process for synchronously optimizing forming behavior of dissimilar metal friction welding joint |
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| CN104923907A (en) * | 2015-05-21 | 2015-09-23 | 陕西理工学院 | Friction welding method of sacrificial anode of water heater on continuous driving friction welding machine |
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| CN101829853A (en) * | 2010-04-29 | 2010-09-15 | 重庆大学 | Current-carrying inertial axial friction composite welding method and equipment thereof |
| CN101829854A (en) * | 2010-04-29 | 2010-09-15 | 重庆大学 | Current-carrying inertial radial friction composite welding method and equipment thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551102A (en) * | 2018-11-30 | 2019-04-02 | 重庆英杰贝尔机械制造有限公司 | A kind of welding method of YG8 hard alloy and 40Cr structural steel |
| CN112207420A (en) * | 2020-09-25 | 2021-01-12 | 北京科技大学 | Method for heterogeneous rotary friction welding of titanium alloy and steel |
| CN112207420B (en) * | 2020-09-25 | 2021-12-24 | 北京科技大学 | Method for heterogeneous rotary friction welding of titanium alloy and steel |
| CN112496521A (en) * | 2020-11-10 | 2021-03-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Improve Ti2Welding and heat treatment method for welding seam quality of AlNb alloy |
| CN112496521B (en) * | 2020-11-10 | 2021-12-24 | 中国航发沈阳黎明航空发动机有限责任公司 | Improve Ti2Welding and heat treatment method for welding seam quality of AlNb alloy |
| CN113894508A (en) * | 2021-11-04 | 2022-01-07 | 山东大学 | Riveting auxiliary rotary friction welding process and application of dissimilar metal bar |
| CN113894508B (en) * | 2021-11-04 | 2023-02-21 | 山东大学 | Riveting auxiliary rotary friction welding process and application of dissimilar metal bar |
| CN114473175A (en) * | 2022-02-10 | 2022-05-13 | 山东大学 | Process for synchronously optimizing forming behavior of dissimilar metal friction welding joint |
| CN114473175B (en) * | 2022-02-10 | 2022-12-27 | 山东大学 | Process for synchronously optimizing forming behavior of dissimilar metal friction welding joint |
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