CN106180343B - A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance - Google Patents
A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance Download PDFInfo
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- CN106180343B CN106180343B CN201610815169.1A CN201610815169A CN106180343B CN 106180343 B CN106180343 B CN 106180343B CN 201610815169 A CN201610815169 A CN 201610815169A CN 106180343 B CN106180343 B CN 106180343B
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- dissimilar metal
- interface
- inner tube
- temperature control
- control method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance, the invention belongs to the technical field of heating in metal material plastic processing, are related to a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance.The present invention is to solve existing methods to be difficult to form larger temperature gradient in metal interface both sides, the problem of cannot effectively increasing the interface contact heat resistance of dissimilar metal solid state transformation compound tense.The present invention carries out differential heating to inner and outer tubes using different heat sources, make that there is larger temperature gradient between inner and outer pipes, and process spiral type groove in inner tube outer surface or outer pipe internal surface, real contact area when inner and outer pipes interface heat transfer is reduced, inner and outer pipes metal is inhibited to be exchanged in the hot-fluid of interface.The method larger temperature gradient of shape between inner and outer pipes metal realizes differential temperature control when dissimilar metal composite spinning.
Description
Technical field
The invention belongs to the technical field of heating in metal material plastic processing, are related to a kind of xenogenesis based on interface resistance
Metal composite spinning differential temperature control method.
Background technology
As dissimilar metal clad plate/pipe/component etc. is in petrochemical industry, ocean development, nuclear energy uses, household electrical appliance and state
The increasingly increase of demand in anti-industry, to the compound type of dissimilar metal and bond quality, more stringent requirements are proposed, for this to different
It is a kind of row that kind metal, which applies certain temperature, pressure and deflection to make it that it is compound that good mechanical and metallurgy occur in interface,
Effective method, such as dissimilar metal solid-state smithwelding, extruding and spinning solid-state hot pressing processing method can be achieved it is such plus
Work.When dissimilar metal spinning compound tense, at the same temperature, since the resistance of deformation of different metal is different, it is identical by
Under the conditions of power, the deflection that different metal generates is different, uncoordinated which results in what is deformed between dissimilar metal, is unfavorable for the two
Between solid diffusivity.By carrying out differential temperature control to dissimilar metal, difficult deformable metal is made to have higher temperature to reduce its change
Shape drag, and make yielding metal that there is lower temperature, increase its resistance of deformation, so as to improve the compatibility of deformation between dissimilar metal
Property, contribute to the spinning between dissimilar metal compound.
When dissimilar metal solid diffusivity, practical solid occurs over just some discrete points or small area to the contact of solid
On, remaining gap portion is vacuum or filled media (such as empty gas and water and oil etc.).Due to gap dielectric thermal coefficient with
Solid thermal conductivity generally differs larger, thus hot-fluid near contact surface is caused to change, and forms the additional resistance of contact heat-exchanging
Power, i.e. interface contact heat resistance.Under normal circumstances, the presence of interface resistance will increase the temperature drop in hot-fluid approach.For material
The larger dissimilar metal multiple tube of property difference (such as Steel/Al, Ti/Al, Mg/Al etc.) is imitated using the thermal contact resistance at its interface
It answers and thermal contact resistance control method carries out gradient control, it can be achieved that each layer in multiple tube to the Temperature Distribution of interface both sides metal
The active control of metal deformation flow improves interface cohesion so as to improve the interface deformation harmony of dissimilar metal combined shaping
Intensity, therefore the interface contact heat resistance for increasing dissimilar metal solid state transformation compound tense is of great significance.
The principal element for influencing interface contact heat resistance has：Contact material, interface mean temperature, interfacial compressive stress and contact
The surface roughness in face.However, in dissimilar metal spinning combined shaping, since the thermal conductivity of metal pipe material is good, and pipe is thick
It spends typically small, is difficult to form larger temperature gradient in metal interface both sides using conventional method.
Invention content
It, cannot the invention aims to solve existing method to be difficult to form larger temperature gradient in metal interface both sides
The problem of effectively increasing the interface contact heat resistance of dissimilar metal solid state transformation compound tense, and provide a kind of based on the different of interface resistance
Kind metal composite spinning differential temperature control method.
A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance of the present invention is specifically according to the following steps
It carries out：
One, spiral groove is processed in the inner surface of the outer surface of dissimilar metal inner tube or dissimilar metal outer tube；To xenogenesis
The outer surface of metal inner pipe and the inner surface of dissimilar metal outer tube carry out acetone grease removal and steel brush scraping processing successively, then will be different
Kind metal inner pipe and dissimilar metal outer tube are nested together, and the contact surface of dissimilar metal inner tube and dissimilar metal outer tube is interface；
Two, mandrel is arranged in the inside of dissimilar metal inner tube, and the mandrel uses rotatable heater, in the mandrel is used as
Pipe heat source；Spinning roller is arranged in the outside of the dissimilar metal outer tube, and the spinning roller is heated using flame gun, and the spinning roller is as outer
Pipe heat source；
Three, set temperature is heated to using flame gun to spinning roller, using infrared thermal imager to spinning roller into trip temperature
Monitoring and acquisition keep the temperature 5min in set temperature, stop heating, then in core after the temperature of spinning roller is heated to set temperature
Rotating speed carries out mould pressing under conditions of being 100rpm, completes dissimilar metal composite spinning.
Beneficial effects of the present invention：
Internal mandrel is respectively heated with external spinning roller when the present invention is by mould pressing, by rotating electrical heating dress
Accurate heating and the temperature control of achievable mandrel are set, the mandrel is with the spinning roller as interface contact heat resistance conventional measurement devices
Height temperature-heat-source, heat transfer contact body of the inside and outside tubing as interface contact heat resistance conventional measurement devices, dissimilar metal composite spinning
Caused by spinning force in the process inner and outer pipes interface intermolecular forces as contact body interface between pressure, realize inner and outer pipes metal with not
Synthermal heat source contact, and through-thickness is formed between double layer of metal from high temperature mandrel to low temperature spinning roller or from high temperature spinning roller
Screw type ditch is processed to the direction of heat flow of low temperature mandrel, while in said inner tube outer metallic surface or the outer tube metallic interior surface
Slot reduces inner and outer pipes interfacial contact area, hinders the heat transfer of interface, can effectively increase the temperature of metal between inner and outer pipes
Gradient, realizes the differential temperature control of ectonexine metal, and will not be adversely affected to final bond strength.
Description of the drawings
Fig. 1 is the assembling schematic diagram of the present invention；
Fig. 2 is the spiral groove schematic diagram.
Specific implementation mode
Specific implementation mode one：A kind of dissimilar metal composite spinning differential temperature control based on interface resistance of present embodiment
Method specifically carries out according to the following steps：
One, spiral groove 5 is processed in the inner surface of the outer surface of dissimilar metal inner tube 8 or dissimilar metal outer tube 7；To different
The outer surface of kind metal inner pipe 8 and the inner surface of dissimilar metal outer tube 7 carry out acetone grease removal and steel brush scraping processing successively, then
Dissimilar metal inner tube 8 and dissimilar metal outer tube 7 are nested together, the contact surface of dissimilar metal inner tube 8 and dissimilar metal outer tube 7
For interface；
Two, mandrel 6 is arranged in the inside of dissimilar metal inner tube 8, and the mandrel 6 uses rotatable heater, the mandrel 6
As inner tube heat source；Spinning roller 1 is arranged in the outside of the dissimilar metal outer tube 7, and the spinning roller 1 is heated using flame gun, described
Spinning roller 1 is used as outer tube heat source；
Three, set temperature is heated to using flame gun to spinning roller 1, temperature is carried out to spinning roller 1 using infrared thermal imager
Degree monitoring and acquisition keep the temperature 5min in set temperature, stop heating, then exist after the temperature of spinning roller 1 is heated to set temperature
The rotating speed of mandrel 6 carries out mould pressing under conditions of being 100rpm, completes dissimilar metal composite spinning.
The set temperature is set according to actual needs.
Rotatable heater described in present embodiment is patent CN104624765A described devices.
The high temperature heat source or low-temperature heat source that mandrel 6 described in present embodiment is heated as inner tube are filled equipped with rotary heating
It sets, axial aperture is parallel to being provided at 6 surface of mandrel, the aperture is built-in with thermocouple and carries out temperature detection,
In multiple tube spin-forming procedure, under larger local large deformation force effect, mandrel is contacted with inner tube metal in close, interior tubing
Material is very thin, and the temperature gradient very little on tubing inner thickness direction, surveyed mandrel surface temperature can be used as inner tube temperature and boundary
The temperature of inner tube at face.
Since outer tube thickness is smaller in present embodiment, the smaller temperature gradient of its internal through-thickness can be ignored,
Institute's survey outer tube temperature can be used as outer tube temperature and the temperature of interface outer tube.
Spiral type groove 5 described in present embodiment can reduce ectonexine metal tube interface contact area,
Increase the interface contact heat resistance between dissimilar metal tubing, inhibit conduction of the hot-fluid in interface from high temp objects to cryogenic object,
To widen the temperature gradient between ectonexine different kinds of metal tubes.
Specific implementation mode two：The present embodiment is different from the first embodiment in that：The gold of xenogenesis described in step 1
The material for belonging to inner tube 8 is 5A03 aluminium alloys.Other are same as the specific embodiment one.
Specific implementation mode three：The present embodiment is different from the first and the second embodiment in that：It is different described in step 1
The material of kind metal outer pipe 7 is 3A21 aluminium alloys.Other are the same as one or two specific embodiments.
Specific implementation mode four：Unlike one of present embodiment and specific implementation mode one to three：Institute in step 1
The gash depth for stating spiral groove 5 is 0.2mm~0.6mm, and screw pitch is 1mm~5mm.Other and specific implementation mode one to three
One of it is identical.
Specific implementation mode five：Unlike one of present embodiment and specific implementation mode one to four：Institute in step 1
The gash depth for stating spiral groove 5 is 0.3mm~0.4mm, and screw pitch is 2mm~3mm.Other and specific implementation mode one to four
One of it is identical.
Specific implementation mode six：Unlike one of present embodiment and specific implementation mode one to five：Institute in step 2
It includes thermocouple wire 4, mandrel 6, heating rod 9, heating rod power cord 10, four road collector rings 3 and multichannel to state rotatable heater
Temperature sensor 2；Mandrel 6 is mounted in dissimilar metal inner tube 8, and dissimilar metal inner tube 8 is mounted in dissimilar metal outer tube 7, the core
Axis 6 is internally provided with blind hole, and for placing heating rod 9, the end of mandrel 6 is fixed with four road collector rings 3, in four road collector rings 3
Two-way connection heating rod power cord 10, remaining two-way connecting mandrel 6 is introduced through two thermocouple wires come in four road collector rings 3
4, four road collector ring 3 is connect by other two thermocouple wires 4 with multichannel temperature Acquisition Instrument 2.Other and specific implementation
One of mode one to five is identical.
The multichannel temperature Acquisition Instrument 2 is used to acquire the temperature of mandrel 6, and measured temperature is 6 surface temperature of mandrel, is being revolved
During pressing formation, inner tube is relatively thin, and the temperature gradient on thickness direction is smaller negligible, regards isothermal body, inner tube and core as
Axis is in close contact, and the surveyed mandrel surface temperature of thermocouple can be used as the temperature of inner tube in mandrel.
Specific implementation mode seven：Unlike one of present embodiment and specific implementation mode one to six：Institute in step 3
It is the reduction that spinning roller 1 is first radially cut into 35% to state mould pressing, with feed ratio is in an axial direction again then 0.3mm/rev
Rate dextrorotation is fed.Other are identical as one of specific implementation mode one to six.
Beneficial effects of the present invention are verified using following embodiment：
Embodiment one：A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance is specifically to press following step
It is rapid to carry out：
One, spiral groove 5 is processed in the inner surface of the outer surface of dissimilar metal inner tube 8 or dissimilar metal outer tube 7；To different
The outer surface of kind metal inner pipe 8 and the inner surface of dissimilar metal outer tube 7 carry out acetone grease removal and steel brush scraping processing successively, then
Dissimilar metal inner tube 8 and dissimilar metal outer tube 7 are nested together, and using screw will one end of which is fixed on mandrel 6,
The contact surface of dissimilar metal inner tube 8 and dissimilar metal outer tube 7 is interface；
Two, mandrel 6 is arranged in the inside of dissimilar metal inner tube 8, and the mandrel 6 uses rotatable heater, the mandrel 6
As inner tube heat source；Spinning roller 1 is arranged in the outside of the dissimilar metal outer tube 7, and the spinning roller 1 is heated using flame gun, described
Spinning roller 1 is used as outer tube heat source；
Three, set temperature is heated to using flame gun to spinning roller 1, temperature is carried out to spinning roller 1 using infrared thermal imager
Degree monitoring and acquisition keep the temperature 5min in set temperature, stop heating, then exist after the temperature of spinning roller 1 is heated to set temperature
The rotating speed of mandrel 6 carries out mould pressing under conditions of being 100rpm, completes dissimilar metal composite spinning；
The a diameter of Φ 60mm, a length of 700mm of the mandrel 6；There are Φ 28mm, long 380 blind hole, for placing inside it
Diameter of phi 28mm, the heating rod of long 300mm, heating rod specification are 220V, 2000W；
The material of the dissimilar metal inner tube 8 is 5A03 aluminium alloys；Its internal diameter is Φ 60mm, thickness 2mm；
The material of the dissimilar metal outer tube 7 is 3A21 aluminium alloys；Its internal diameter is Φ 64mm, thickness 2mm；
The set temperature of the spinning roller 1 is room temperature or 200 DEG C；The set temperature of the mandrel 6 is 200 DEG C；
The gash depth of the spiral groove 5 is 0.3mm~0.4mm, and screw pitch is 2mm~3mm；
The mould pressing is the reduction that spinning roller 1 is first radially cut into 35%, then again in an axial direction with feed ratio
It is fed for 0.3mm/rev rate dextrorotations.
The present embodiment can make to form 80 DEG C or so between inner and outer pipes by controlling the temperature gradient between spinning roller 1 and mandrel 6
Temperature gradient, with high temperature mandrel compared with high temperature spinning roller, the compound compatibility of deformation of dissimilar metal spinning be improved significantly.When
After inner tube outer surface processes spiral type groove, temperature gradient further increases, and maximum temperature difference can reach 115 DEG C.The ruler of groove
Very little and spacing is to final forming quality important, when groove is shallow and is separated by close, the non-groove portion in spinning process
The protrusion divided is easy be collapsed, is easier to shape the occlusion of machinery between two pipes, but be unfavorable for the compound generation of solid phase, and
Groove greatly increases frictional resistance when interface both sides metal mutually slides, and easily causes non-spun portion gold in front of spinning roller
Belong to the torsional deformation of tubing；When ditch groove depth and relatively far apart, although the dissimilar metal tubing compatibility of deformation of interface both sides increases,
But there are part metals to carry out the filling of groove, the surface area of inner tube outer surface increases, and reduces the area fraction of fresh metal,
Equally it is unfavorable for the intermetallic solid diffusivity of ectonexine.Therefore gash depth is designed as 0.3-0.4mm or so by the present embodiment,
And screw pitch can effectively increase the temperature gradient of metal between inner and outer pipes when being designed as 2~4mm or so, realize ectonexine metal
Differential temperature controls, and will not be adversely affected to final bond strength.
In the present embodiment because ectonexine metal is under identical temperature condition, ectonexine metal deformation resistance difference compared with
It is small, but when due to rotary pressure deformation stress state suffered by inner and outer pipes difference, the deflection of outer tube is significantly larger than inner tube, therefore, makes
The temperature of inner tube is higher than outer tube, reduces the resistance of deformation of inner tube, is conducive to the compatibility of deformation of inner and outer pipes spinning compound tense.For
Under identical temperature condition, the case where inner tube resistance of deformation is much smaller than outer tube, the deformation of inner tube is easy compared with outer tube, similarly, Ke Yi
Negative temperature gradient is formed between spinning roller 1 and mandrel 6, to keep inner tube temperature low, outer tube temperature is high, the change of adjustment interface both sides metal
Shape harmony.
Claims (6)
1. a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance, it is characterised in that based on interface resistance
Dissimilar metal composite spinning differential temperature control method specifically carries out according to the following steps：
One, in the inner surface of the outer surface of dissimilar metal inner tube (8) or dissimilar metal outer tube (7) processing spiral groove (5)；It is right
The outer surface of dissimilar metal inner tube (8) and the inner surface of dissimilar metal outer tube (7) carries out acetone grease removal successively and steel brush scrapes erasure
Dissimilar metal inner tube (8) and dissimilar metal outer tube (7), are then nested together, dissimilar metal inner tube (8) and dissimilar metal by reason
The contact surface of outer tube (7) is interface；
The gash depth of spiral groove described in step 1 (5) is 0.2mm~0.6mm, and screw pitch is 1mm~5mm；
Two, rotatable heater is arranged in the inside of dissimilar metal inner tube (8), and rotatable heater is as inner tube heat source；It is described different
The outside setting spinning roller (1) of kind metal outer pipe (7), the spinning roller (1) are heated using flame gun, and the spinning roller (1) is as outer
Pipe heat source；
Three, set temperature is heated to using flame gun to spinning roller (1), temperature is carried out to spinning roller (1) using infrared thermal imager
Degree monitoring and acquisition keep the temperature 5min in set temperature, stop heating, then after the temperature of spinning roller (1) is heated to set temperature
Mould pressing is carried out under conditions of the rotating speed of rotatable heater is 100rpm, completes dissimilar metal composite spinning.
2. a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance according to claim 1, special
Sign is that the material of dissimilar metal inner tube described in step 1 (8) is 5A03 aluminium alloys.
3. a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance according to claim 1, special
Sign is that the material of dissimilar metal outer tube described in step 1 (7) is 3A21 aluminium alloys.
4. a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance according to claim 1, special
Sign is that the gash depth of spiral groove described in step 1 (5) is 0.3mm~0.4mm, and screw pitch is 2mm~3mm.
5. a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance according to claim 1, special
Sign is that rotatable heater described in step 2 includes thermocouple wire (4), mandrel (6), heating rod (9), heating rod power cord
(10), four road collector rings (3) and multichannel temperature Acquisition Instrument (2)；Mandrel (6) is mounted in dissimilar metal inner tube (8), dissimilar metal
Inner tube (8) is mounted in dissimilar metal outer tube (7), and the mandrel (6) is internally provided with blind hole, for placing heating rod (9), mandrel
(6) end is fixed with four road collector rings (3), the two-way connection heating rod power cord (10) in four road collector rings (3), Si Luji
Remaining two-way connecting mandrel (6) is introduced through two thermocouple wires (4) come in electric ring (3), and four road collector ring (3) is by another
Outer two thermocouple wires (4) connect with multichannel temperature Acquisition Instrument (2).
6. a kind of dissimilar metal composite spinning differential temperature control method based on interface resistance according to claim 1, special
Sign is that mould pressing described in step 3 is the reduction that spinning roller (1) is first radially cut into 35%, then again in an axial direction
It is fed for 0.3mm/rev rate dextrorotations with feed ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815169.1A CN106180343B (en) | 2016-09-09 | 2016-09-09 | A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610815169.1A CN106180343B (en) | 2016-09-09 | 2016-09-09 | A kind of dissimilar metal composite spinning differential temperature control method based on interface resistance |
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| CN106180343A CN106180343A (en) | 2016-12-07 |
| CN106180343B true CN106180343B (en) | 2018-09-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106670258B (en) * | 2016-12-16 | 2019-01-08 | 江苏理工学院 | Metal composite pipe plastic processing method |
| CN107745028B (en) * | 2017-11-06 | 2019-05-24 | 航天材料及工艺研究所 | High magnesium-rare earth coupling barrel deformation temperature field control tooling and control method |
| CN108466468A (en) * | 2018-03-05 | 2018-08-31 | 北京科技大学 | A kind of method that differential temperature extruding prepares bimetal composite material |
| CN113954422A (en) * | 2021-10-14 | 2022-01-21 | 瑞安市宏润机械制造有限公司 | Wine outer package indentation mechanism |
| CN115971263B (en) * | 2023-03-20 | 2023-06-23 | 太原理工大学 | Online gradient temperature control equipment for seamless metal composite pipe and rolling and heat treatment method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100491122C (en) * | 2006-03-13 | 2009-05-27 | 浙江双飞无油轴承有限公司 | Production of laminated composite plate without copper powder sintering layer |
| CN103807517A (en) * | 2014-02-23 | 2014-05-21 | 芜湖鑫力管道技术有限公司 | Inner spinning stainless steel compound pipeline for conveying fluid |
| CN104624765B (en) * | 2014-12-03 | 2016-08-24 | 哈尔滨工业大学 | The rotary heating of a kind of dissimilar metal composite spinning process and temperature regulating device |
| CN105057989B (en) * | 2015-08-21 | 2017-06-30 | 西安向阳航天材料股份有限公司 | A kind of manufacture method of liner two-phase stainless steel pipe |
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