CN105568184B - A kind of low-melting-point metal mangneto plasticity is circumferential to roll over rub fine method and its device - Google Patents
A kind of low-melting-point metal mangneto plasticity is circumferential to roll over rub fine method and its device Download PDFInfo
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- CN105568184B CN105568184B CN201610072710.4A CN201610072710A CN105568184B CN 105568184 B CN105568184 B CN 105568184B CN 201610072710 A CN201610072710 A CN 201610072710A CN 105568184 B CN105568184 B CN 105568184B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
Abstract
The invention discloses a kind of low-melting-point metal mangneto plasticity circumferential directions to roll over rub fine method and its device, method includes the pending test specimen of low-melting-point metal being processed into cylindrical shape, the pending test specimen of low-melting-point metal of cylindrical shape is made to carry out rotation, the rolling of travelling surface is carried out to the pending test specimen of low-melting-point metal along the generatrix direction of the pending test specimen of the low-melting-point metal of the cylindrical shape of rotation to rub, and returns low-melting-point metal pending test specimen and electromagnetic field is provided；Device includes test specimen clamping rotation component, pressure control rolles over the component that rubs, cooling component, vertically feeding component and electromagnetic component；The low-melting-point metal of the present invention is circumferential to roll over rub surface fine method and its device, the refinement of metal surface can be still realized in the degree do not processed repeatedly to metal surface, achievees the purpose that refine low-melting-point metal surface by the dynamic recrystallization behavior of metal.
Description
Technical field
The invention belongs to Metal Forming fields, and in particular to a kind of circumferential rolling of low-melting-point metal mangneto plasticity rubs ultra-fine
Change method and its device.
Background technology
For the low-melting-point metals such as magnalium under Service Environment, the unstability (such as fatigue, abrasion and corrosion) of material starts from table more
Face, therefore only a degree of crystal grain thinning, i.e. surface fine technology are prepared in material surface, it is possible to pass through tissue
Optimization improves the overall performance of material and military service behavior.The method for being now widely used for preparing metal material surface grained material
There is the methods of surface mechanical attrition treatment method, cam roll-in method, pneumatic shot-peening method and supersonic particles bombarding method.
Although above-mentioned several method is attained by the purpose of metal surface crystal grain refinement, these methods or due to prepare skill
Art is complicated, of high cost or be restricted due to more stringent to prepared material requirements, and above-mentioned prepares grained material
Method majority by carrying out application load repeatedly in material surface, accumulate sufficiently large accumulating plastic deformation's amount, pass through position
Mistake is so that coarse-grain is progressively evolved into fine grain, since process is excessively cumbersome so that industrial practical application is restricted.
Research shows during Metal Forming, when applying magnetic field dislocation close to obstacle when electronics can be excited in place
Free radical pair is formed between wrong and obstacle so that dislocation is more advantageous to moving to the position for needing ability few, and dislocation is to metallic grain boundaries
Pinning ability become smaller, be conducive to the raising of material plasticity.It is circumferential using mangneto plasticity when being refined to low melting point surface
Rolling rub technology when, apply with used in magnetic field so that the just face processability of metal improves, and low melting material surface thinning effect increases
By force.
The content of the invention
For in the prior art the defects of and deficiency, roll over the table that rubs the object of the present invention is to provide a kind of low-melting-point metal is circumferential
Face fine method and its device, this method can not only quickly realize the surface refinement of low-melting-point metal, pass through the dynamic of metal
State recrystallization principle makes methods and apparatus of the present invention carry out process simpler economy during the surface refinement of low-melting-point metal, leads to
The plastic behavior that crossing mangneto plasticity principle can cause metal in forming process increases so that rolles over the mouldability for the workpiece surface that rubs
It improves so that the scope that metal effectively refines is strengthened, so as to achieve the purpose that metal surface fine.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of low-melting-point metal mangneto plasticity is circumferential to roll over fine method of rubbing, and the pending test specimen of low-melting-point metal is processed into
Cylindrical shape makes the pending test specimen of low-melting-point metal of cylindrical shape carry out rotation along the surfaces of revolution, along the cylindrical shape of rotation
The generatrix direction of the pending test specimen of low-melting-point metal carries out low-melting-point metal pending test specimen the rolling of travelling surface and rubs；It returns low
The pending test specimen of melting point metals provides electromagnetic field.
Specifically, the spin velocity of the pending test specimen of the low-melting-point metal of the cylindrical shape is rolled over travelling surface
The gait of march ratio to rub is 2~10；The unit of spin velocity is r/min, and travelling surface rolles over the gait of march unit rubbed and is
mm/min；The magnetic field intensity of the electromagnetic field is 2 × 103A/mm~4 × 103A/mm。
More specifically, the pending test specimen of low-melting-point metal is carried out travelling surface roll over drafts when rubbing for 0.2~
1.2mm。
In addition, the low-melting-point metal is AZ31 magnesium alloys, travelling table is carried out to the pending test specimen of AZ31 magnesium alloys
The drafts that face rolles over when rubbing is 0.2~1mm.
In addition, carrying out travelling surface rolles over the pending test specimen of low-melting-point metal that the unit rubbed rolles over rub area and cylindrical shape
Lateral area area ratio be 1:4~24.
It realizes the circumferential device for rolling over fine method of rubbing of the low-melting-point metal mangneto plasticity, rotation is clamped including test specimen
Component, pressure control roll over the component that rubs, cooling component, vertical feeding component and electromagnetic component, and test specimen clamps rotation component for clamping circle
The pending test specimen of low-melting-point metal of bar shape simultaneously controls it to carry out rotation along the surfaces of revolution, and pressure control rolling rubs component in vertically feeding structure
Travelling rolling is carried out under the drive of part along the generatrix direction of the pending test specimen of low-melting-point metal of cylindrical shape to rub, cooling component pair
The pending test specimen of low-melting-point metal of cylindrical shape in process is cooled down, and the electromagnetic component is low-melting-point metal
Pending test specimen provides electromagnetic field.
Specifically, described pressure control rolling rubs, component includes rolling over the head and with rolling over the coaxially connected pressure device that rubs, pressure device of rubbing
It is controlled by control pressurer system；Pressure device is vertical with the mobile terminal of vertical feeding component to be fixedly connected.
More specifically, the rub rolling of head of the rolling rubs face as arcwall face, and the radian of arcwall face is
In addition, the test specimen, which clamps rotation component, includes three pawls and rotation motor, three pawl clamp cylinders body shapes
The pending test specimen of low-melting-point metal, rotation motor drive three pawls edge together with the pending test specimen of the low-melting-point metal of cylindrical shape
The surfaces of revolution carries out rotation.
In addition, the test specimen, which clamps rotation component, further includes thimble, thimble is located at the top of three pawls, and three pawls will circle
One bottom end of the pending test specimen of low-melting-point metal of bar shape clamps, and thimble is pending in the low-melting-point metal of cylindrical shape
Another bottom surface of test specimen is held out against.
Advantages of the present invention：
1st, the low-melting-point metal mangneto plasticity that the present invention uses is circumferential rolles over fine method of rubbing, and this method mainly passes through rotation
Cylindrical shape two-way relative motion of the pending test specimen of low-melting-point metal with carrying out travelling surface milling along busbar side
Mode realizes the refinement to metal surface, even fine, low melting point metal material surface be under pressure it is tangential with surface
Frictional force collective effect when, friction tangential force causes metal surface die break, and since the shearing stress that material is subject to is face
Shearing stress so that material is tangentially plastically deformed raising, achievees the purpose that refine surface；Violent plasticity change occurs for material simultaneously
Shape, larger frictional heat cause metal that dynamic recrystallization occurs, achieve the purpose that further crystal grain refinement；Mainly using work
The dynamic recrystallization behavior of crystal grain achievees the purpose that crystal grain thinning after part drastic deformation, be not by the accumulative strain of dislocation come
Control grain size.
2nd, the present invention, which further fits through mangneto plasticity principle, can cause plastic behavior of the metal in forming process
Increase so that the mouldability for rolling over the workpiece surface that rubs improves so that the scope that metal effectively refines is strengthened, so as to reach metal surface
The purpose of fine；When using magnetic plasticity, on the premise of metal fining is ensured, rolling over the vertical feed speed rubbed can be able to
It improves so that production efficiency improves；
3rd, the present invention gives to realize the circumferential device for rolling over surface fine method of rubbing of low-melting-point metal, should
Device mainly realizes test specimen by clamping rotation component, pressure control milling component, cooling component, vertical feeding component and electromagnetic component
Rotation and travelling milling bidirectional-movement combination, test specimen clamps the low melting point gold of rotation component for clamp cylinders body shape
Belong to pending test specimen and it is controlled to carry out rotation along the surfaces of revolution, pressure control milling component is under the vertically drive of feeding component along cylinder
The generatrix direction of the pending test specimen of low-melting-point metal of body shape carries out travelling milling, and cooling component is to the cylinder in process
The pending test specimen of low-melting-point metal of body shape is cooled down, and electromagnetic component provides magnetic induction to the pending test specimen of low-melting-point metal；
4th, in addition, milling head in the circumferential device for rolling over surface fine method of rubbing of the realizations low-melting-point metal of the present invention and
The cooperation of test specimen is face cooperation, rolles over the surface that the head that rubs is pressed into a high-speed rotating pending test specimen under the effect of the pressure, material
Surface is expected in the tangential frictional force collective effect with surface that is under pressure, friction tangential force causes metal surface die break,
Since the shearing stress that material is subject to is face shearing stress so that material is tangentially plastically deformed raising, and material reaches the mesh of refinement
's.
Description of the drawings
Fig. 1 is the moulding circumferential structure diagram for rolling over the surface fine device that rubs of the low-melting-point metal mangneto of the present invention；
The rolling that Fig. 2 is Fig. 1 rubs the structural relation schematic diagram of head and test specimen；
Fig. 3 is to roll over the decorative pattern of head surface of rubbing, and A, B and C in figure represent three kinds of different decorative patterns respectively；
Fig. 4 be the present invention rolling rub head in the corresponding radian Ψ schematic diagrames of cylindrical work piece surface, figure D represent cylinder
The diameter of body shape test specimen, the circular transverse cross-sectional view for representing cylindrical shape test specimen in figure；
Fig. 5 is metallographic structure figure before and after test specimen processing in embodiment one；
Fig. 6 is the surface transmission microphoto before test specimen processing in embodiment two；
Fig. 7 is the surface transmission microphoto after test specimen processing in embodiment two；
Fig. 8 is using the metallographic structure figure after test specimen processing in comparative example one；
Each label is expressed as in Fig. 1 and 2：1- rollings rub head, 2- fixes sleeves, 3- pressure devices, 4- control pressurer systems, 5- the
One protective cover, 6- vertically feed motor, 7- rotation motors, tri- pawls of 8-, 9- workbench, the pending test specimen of 10- low-melting-point metals,
The second protective covers of 11-, 12- thimbles, 13- cooling components, 14- electromagnet, 15- power supplys；
The present invention is illustrated below in conjunction with specification drawings and specific embodiments.
Specific embodiment
A kind of low-melting-point metal mangneto plasticity of the present invention is circumferential to roll over fine method of rubbing, including waiting to locate low-melting-point metal
Reason test specimen is processed into cylindrical shape, the pending test specimen of low-melting-point metal of cylindrical shape is made to carry out rotation along the surfaces of revolution, along rotation
Cylindrical shape the pending test specimen of low-melting-point metal generatrix direction to the pending test specimen of low-melting-point metal carry out travelling table
Face rolles over and rubs, and returns the pending test specimen of low-melting-point metal and provides electromagnetic field；Low melting point metal material surface is being under pressure and surface
During tangential frictional force collective effect, friction tangential force causes metal surface die break, and the shearing stress being subject to due to material
For face shearing stress so that material is tangentially plastically deformed raising, achievees the purpose that refine surface；Acutely modeling occurs for material simultaneously
Property deformation, larger frictional heat cause metal occur dynamic recrystallization, achieve the purpose that further crystal grain refinement；Pass through magnetic simultaneously
The plastic behavior that causing plasticity principle can cause metal in forming process increases so that the mouldability for rolling over the workpiece surface that rubs carries
It is high so that the scope that metal effectively refines is strengthened, so as to achieve the purpose that metal surface fine.
In process, the traveling speed rubbed is rolled on the angular velocity of rotation of the pending test specimen of low-melting-point metal and travelling surface
Degree should be kept within the specific limits, because angular velocity of rotation is excessive, can increase frictional heat, heat input crosses conference and causes gold
Belong to grain coarsening；When the gait of march that travelling surface rolling simultaneously rubs is excessive, since translational speed is too fast, heat input is reduced,
So that work piece surface generates defect, mouldability is bad.According to inventor's research experience, the low-melting-point metal of cylindrical shape is waited to locate
When the gait of march ratio that the spin velocity of reason test specimen is rubbed with the rolling of travelling surface is 2~10, process can be effectively ensured
Middle metal surface mouldability and metal fining degree；Metal surface mouldability and metal fining in process can be effectively ensured
Degree；The unit of spin velocity is r/min, and gait of march unit is mm/min.
It carries out travelling surface and rolles over the side that the unit rubbed rolles over the pending test specimen of low-melting-point metal of rub area and cylindrical shape
The area ratio of area is 1:4~24.
With reference to Fig. 1 and 2, the circumferential device for rolling over surface fine method of rubbing of realization low-melting-point metal of the invention includes test specimen
Clamp rotation component, pressure control rolles over the component that rubs, cooling component, vertical feeding component and electromagnetic component, test specimen clamp rotation component and use
In clamp cylinders body shape the pending test specimen of low-melting-point metal and it is controlled to carry out rotation along the surfaces of revolution, pressure control rolling rubs component perpendicular
Travelling rolling is carried out under the drive of feeding component along the generatrix direction of the pending test specimen of low-melting-point metal of cylindrical shape to rub, it is cold
But component cools down the pending test specimen of the low-melting-point metal of the cylindrical shape in process, and electromagnetic component is low melting point gold
Belong to pending test specimen and electromagnetic field is provided.
The electromagnetic component of the present invention includes electromagnet 14 and power supply 15, and the magnetic field size of electromagnet 14 determines, mangneto modeling
Property critical magnetic field strength be 103A/mm, when the circumferential rolling of mangneto plasticity rubs, preferable magnetic field intensity is 2 × 103A/mm~4
×103A/mm, magnetic field intensity cross conference and the crystallite dimension of metal are roughened.
Wherein, pressure control milling component includes milling first 1 and fixes sleeve 2 coaxially connected with milling first 1 successively, pressure device
3 and control pressurer system 4, milling first 1 is mounted on by fixes sleeve 2 on pressure device 3, and pressure device 3 passes through control pressurer system 4
It is controlled；Pressure device 3 is vertical with the mobile terminal of vertical feeding component to be fixedly connected.Vertical feeding component includes vertical feeding horse
Up to 6, when carrying out the milling of test specimen, the drafts of milling first 1 is given by 4 control pressure device 3 of pressure system, then by vertical
Feeding motor 6 controls the speed that milling first 1 is advanced back and forth in pending surface of test piece along generatrix direction；Outside vertically feeding component
First protective cover 5 of sealing is set, protects the operating process of vertical feeding component；Rolling over the cooperation of rub first 1 and pending test specimen is
Face coordinates, and rolles over first 1 surface for being pressed into a high-speed rotating pending test specimen under the effect of the pressure of rubbing, material surface is being subject to
Pressure and the tangential frictional force collective effect on surface, friction tangential force causes metal surface die break, since material is subject to
Shearing stress be face shearing stress so that material is tangentially plastically deformed raising, and material achievees the purpose that refinement；Material hair simultaneously
Raw severe plastic deformation, larger frictional heat cause metal that dynamic recrystallization occurs, achieve the purpose that crystal grain refinement.It forces simultaneously
Cooling effect causes metallic surface degree of grain refinement to improve.
The cooling component 13 of the present invention is using cooling-lubricant, the test specimen being sprayed at by the pipeline of connection in processing procedure
Surface is on the one hand to cool down to metal after machining, and inhibits growing up for metal recrystal grain；An other side
Face is can to adjust pending test specimen and roll over the frictional force rubbed between first 1, while can cool down rolling and rub first 1, improves it and uses the longevity
Life.
Preferably, with reference to Fig. 4, the milling face of milling first 1 is arcwall face, and the radian of arcwall face is And combine figure
3, the embossing of a variety of different increase skin-friction forces are set on the milling face of milling of the invention first 1, and difference embossing is for treating
The effect of processing test specimen is the frictional force increase in order to enable in process, and the heat of generation is more, is more advantageous to being molded, make
Obtain the flow range bigger of metal.
Test specimen, which clamps rotation component, includes three pawls 8 and rotation motor 7, the low melting point gold of three pawls, 8 clamp cylinders body shape
Belong to pending test specimen 10, rotation motor 7 is driven together with three pawls 8 test specimen 10 pending with the low-melting-point metal of cylindrical shape along rotation
Turn face and carry out rotation, the purpose fastened using three pawls 8 is to ensure during rotation, and pending test specimen will not be because of
The effect of rotary force generates displacement, meanwhile, the requirement that can meet numerous workpiece sizes of three pawls 8.Test specimen clamps rotation structure
Part further includes thimble 12,9 and second protective cover 11 of workbench, and thimble 12 is located at the top of three pawls 8, and three pawls 8 are by cylinder
One bottom end of the pending test specimen 10 of low-melting-point metal of shape clamps, and thimble 12 is pending in the low-melting-point metal of cylindrical shape
Another bottom surface of test specimen 10 is held out against, and three pawls 8 are embedded on workbench 9, and the outside that test specimen clamps rotation component sets sealing
The second protective cover 11, protect the processing procedure of test specimen, the purpose using thimble 12 be in order to ensure during rotation so that
The stability of pending test specimen is more preferable so that pending surface of test piece processing is more uniform, and the movement locus of thimble 12 is edge
It its fixing end to be rotated, and vertical direction feeding can be carried out.
In order to study the relation in test specimen process between each factor, inventor give following calculation formula into
Row theoretical direction：
Assuming that a diameter of D of the pending test specimen of the low-melting-point metal of selected cylindrical shape, unit mm, pending examination
The angular velocity of rotation of part is ω, and unit r/min, the gait of march of travelling surface milling is v, and unit is：Mm/min, milling
Radian corresponding to head is Ψ, and the height of milling head is h, and unit mm, the height of pending test specimen is H, and unit mm takes change
It measures as γ h (0<γ<1), it is assumed that complete distance h- γ h apart from when, pending test specimen rotation N circles, N is natural number, then plus
The complete sample of work required time t, unit min are：
Then have：
Then have：
It takes variable to refer to after processing a time every time, the part of upper a time is carried out repeating processing, be
So that gap is not present between processing up and down；Also for metallic surface after every time circumferential direction processing, there is no connecing after processing
Stubble it is also possible that the degree of refinement of metal improves, while improves the globality and uniformity of metal fining so that superficiality
It can more uniformly.
Wherein, when adjusting perpendicular to the pressure of work piece surface, it is contemplated that rolling rubs frictional force of the head to workpiece.It is false
If frictional force is τn, had according to coulomb dry friction law：
τn=f σn
Wherein, f is friction factor, σnFor the surface compression direct stress that pressure device gives, unit is newton, in general,
The temperature of deformable material is higher, then coefficient of friction is bigger.But for copper when 800 DEG C and steel are at 900 DEG C or more, coefficient of friction is instead
It is reduced with the rise of temperature, thus the factor of part material is considered as in regulating friction force.
The part for rolling over the deep work piece surface of head of rubbing is referred to as drafts, can basis when drafts is chosen
Metallic surface mouldability is processed to determine, when drafts is larger, the heat input for the generation that rubs increases, the mouldability of metal
It is improved, drafts when travelling surface milling is carried out to the pending test specimen of low-melting-point metal is 0.2~1.2mm, is depressed
Amount is bigger, and the mouldability of finished surface is better, but the frictional heat generated is more, and crystallite dimension can become roughening, and the present invention provides
The drafts of lower melting-point metal such as AZ31 magnesium alloys is between 0.2~0.8mm.
Embodiment one：
Method and apparatus with reference to shown in the present invention carry out circumferential rolling to the cylindrical shape AZ31 magnesium alloys of a diameter of 6mm
Mocha work.
Using device as shown in Figure 1, wherein machined parameters are arranged to spin velocity as 800r/min, and travelling surface is rolled over
The gait of march 95mm/min to rub, drafts 1.0mm are lubricated using emulsion, and roll over the head that rub does not have decorative pattern for plane,
Rolling rubs head height as 5mm, takes variable as 1mm, carries out 1 rolling and rubs, the magnetic field intensity used is 2 × 103A/mm。
Cross section metal metallographic structure photo after the circumferential rolling of mangneto plasticity rubs is illustrated in figure 5, by finding out processing district in figure
Metal phase have apparent thinning effect than base material area, and the progress of processing district is more uniformly distributed compared to base material, intermediate zone metal
Particle size distribution is uneven, thus illustrates that mangneto plasticity is circumferential and rolles over that rub can be so that the crystal grain of metal be refined, and ring
To roll over rub after metal structure uniformity it is preferable.
Embodiment two：
Method and apparatus with reference to shown in the present invention carry out ring to 6063 rods and bars of aluminium alloy of cylindrical shape of a diameter of 5mm
To rolling mocha work.Using device as shown in Figure 1, wherein spin velocity is 800r/min, and the traveling speed rubbed is rolled on travelling surface
It spends and is lubricated for 95mm/min, drafts 0.5mm using emulsion, roll over the head that rub does not have decorative pattern for plane, rolles over the head height that rubs
For 5mm, variable is taken as 1mm, is carried out 1 rolling and is rubbed, the magnetic field intensity used is 2 × 103A/mm.It is as shown in Figure 6 and Figure 7 processing
Afterwards microphoto is transmitted with processing rear surface before bar processing.The crystallite dimension of base material is aluminium bar surface texture after 1-2 μm of processing
Thinning effect is apparent, 0.5~0.8 μm of average grain size after processing so that crystallite dimension reaches fine, and even tissue.
Comparative example one：
The present embodiment is not what is different from the first embodiment is that the present embodiment is handled by electromagnetic field, in processing, due to metal
Plastic Flow is compared to the difference for adding magnetic field, thus required drafts is increased to 1.0mm, and process in process
In easily generate defect as shown in figure 8, metalworking zone and base material junction generate micro-crack.
Claims (2)
1. a kind of low-melting-point metal mangneto plasticity is circumferential to roll over fine method of rubbing, which is characterized in that low-melting-point metal is pending
Test specimen is processed into cylindrical shape, the pending test specimen of low-melting-point metal of cylindrical shape is made to carry out rotation along the surfaces of revolution, along rotation
The generatrix direction of the pending test specimen of low-melting-point metal of cylindrical shape carries out travelling surface to the pending test specimen of low-melting-point metal
Rolling rubs；
It returns low-melting-point metal pending test specimen and electromagnetic field is provided；
The spin velocity of the pending test specimen of low-melting-point metal of the cylindrical shape rolles over the traveling to rub speed with travelling surface
Degree is than being 2~10；The unit of spin velocity is r/min, and it is mm/min that the gait of march unit rubbed is rolled on travelling surface；
The magnetic field intensity of the electromagnetic field is 2 × 103A/mm~4 × 103A/mm；
The low-melting-point metal is AZ31 magnesium alloys, and carrying out travelling surface to the pending test specimen of AZ31 magnesium alloys rolles over when rubbing
Drafts is 0.2~1mm；
It carries out travelling surface and rolles over the lateral area that the unit rubbed rolles over the pending test specimen of low-melting-point metal of rub area and cylindrical shape
Area ratio be 1:4~24.
2. realizing the circumferential device for rolling over fine method of rubbing of low-melting-point metal mangneto plasticity described in claim 1, feature exists
In clamping rotation component including test specimen, pressure control rolling rubs component, cooling component (13), vertical feeding component and electromagnetic component, test specimen
Rotation component is clamped for the pending test specimen of low-melting-point metal (10) of clamp cylinders body shape and it is controlled to be carried out certainly along the surfaces of revolution
Turn, pressure control rolling rub component vertically feeding component drive under along cylindrical shape the pending test specimen of low-melting-point metal (10) mother
Line direction carries out travelling rolling and rubs, and cooling component (13) is to the pending test specimen of the low-melting-point metal of the cylindrical shape in process
(10) cooled down, the electromagnetic component provides electromagnetic field for the pending test specimen of low-melting-point metal；
The pressure control milling component includes milling head (1) and the pressure device (3) coaxially connected with milling head (1), pressure device (3)
It is vertical with the mobile terminal of vertical feeding component to be fixedly connected；
The milling face of the milling head (1) is arcwall face, and the radian of arcwall face is
The test specimen, which clamps rotation component, includes three pawls (8) and rotation motor (7), three pawls (8) clamp cylinders body shape
The pending test specimen of low-melting-point metal (10), rotation motor (7) drive three pawls (8) and the low-melting-point metal of cylindrical shape pending
Test specimen (10) carries out rotation along the surfaces of revolution together；
The test specimen clamps rotation component and further includes thimble (12), and thimble (12) is located at the top of three pawls (8), three pawls
(8) bottom end of the pending test specimen of the low-melting-point metal of cylindrical shape (10) is clamped, thimble (12) is in cylindrical shape
Another bottom surface of the pending test specimen of low-melting-point metal (10) is held out against.
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| CN105238916B (en) * | 2015-09-30 | 2017-05-17 | 北京有色金属研究总院 | Device and method for treating surface layer of metal material through plastic deformation |
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2016
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| EP0325660A1 (en) * | 1986-07-22 | 1989-08-02 | Matsushita Electric Industrial Co., Ltd. | Method of heat treatment of low melting -point metal |
| CN101537538A (en) * | 2009-04-24 | 2009-09-23 | 重庆大学 | Integrated pin tool for friction stir welding and composite method of resistance-friction stir welding thereof |
| CN102321791A (en) * | 2011-09-19 | 2012-01-18 | 西北有色金属研究院 | A kind of method of utilizing sliding friction to realize making Nano surface of metal material |
| CN104647189A (en) * | 2015-01-26 | 2015-05-27 | 上海交通大学 | Device for mechanically grinding magnesium alloy and grinding method based on device |
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