CN106825091A - The method and device therefor of a kind of continuous large plastometric set its application - Google Patents
The method and device therefor of a kind of continuous large plastometric set its application Download PDFInfo
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- CN106825091A CN106825091A CN201710100830.5A CN201710100830A CN106825091A CN 106825091 A CN106825091 A CN 106825091A CN 201710100830 A CN201710100830 A CN 201710100830A CN 106825091 A CN106825091 A CN 106825091A
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- Prior art keywords
- equivalent diameter
- extruded
- plastometric set
- large plastometric
- continuous large
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/001—Extruding metal; Impact extrusion to improve the material properties, e.g. lateral extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/005—Continuous extrusion starting from solid state material
Abstract
The present invention relates to its application of the method and device therefor of a kind of continuous large plastometric set, belong to plastic working forming technique field.The present invention is by equivalent diameter for the material to be processed of d is the extruded product of D by being continuously extruded into equivalent diameter；To equivalent diameter for the extruded product of D is stretched, the material to be processed that equivalent diameter is d is obtained；Then extruding, stretching are repeated until nominal accumulation strain amount reaches setting value.Present invention process is simple, control is simple, and products obtained therefrom function admirable can be widely applied to middle small dimension tube, rod section, the industrial metaplasia of wire rod of long length.
Description
Technical field
The present invention relates to its application of the method and device therefor of a kind of continuous large plastometric set, belong to plastic working shaping skill
Art field.
Background technology
Research shows：Large plastometric set process can make metal and its alloy obtain sub-micron crystal, or even nanocrystalline,
So as to significantly improve the combination property of metal material.The large plastometric set method of many novelties is proposed and developed in recent years,
In recent decades, the large plastometric set (Severe plastic deformation, SPD) for receiving much concern is because metal can be made
Or alloy obtains superfine or even nanometer crystal microstructure, so as to the mechanical property for increasing substantially metal material is able to fast development.Often
Severe Plastic Deformation Methods have Equal Channel Angular Pressing (ECAP), repeatedly ply rolling (ARB), high pressure torsion (HPT), multidirectional compression
(MAC).With the fast development of large plastometric set, more combinations and continuous large plastometric set methods are proposed in succession, such as
Repeat extruding-jumping-up (REU), repeatedly reciprocating extrusion-compression (CEC), wrinkle-straightening (RCS), continuous shear stress
(Conshearing), equal channel angular pressing-continuously extruded (ECAP-Conform), repetition continuously extruded (R-Conform) etc..Although
The Ultra-fine Grained prepared using large plastometric set can make the intensity of material be greatly improved, but under normal circumstances, can sacrifice
The part plasticity of material, or even the plasticity of material can be greatly lowered.Therefore, how big change is ensured while intensity is improved
The plasticity and toughness of shape grained material remain a problem to be solved.At present, by low temperature large deformation after annealing obtain material not
Plasticity higher is only showed, certain intensity is also remained.
At present, large plastometric set method is at greatly the experimental stage, even if some large plastometric set means have been applied to
During actual industrial production, but scale is limited.Therefore, people still are attempting to grind large plastometric set method by laboratory
The stage is studied carefully gradually to commercial applications propulsion, shows this field in the urgent need to constantly researching and developing the big plasticity of commercial applications
Deformation technique method.
The content of the invention
A kind of weak point that the present invention exists for existing large plastometric set method, there is provided side of continuous large plastometric set
Method.
A kind of method of continuous large plastometric set of the present invention, its embodiment is：
By equivalent diameter for the material to be processed of d1 is the extruded product of D1 by being continuously extruded into equivalent diameter；To equivalent
The extruded product of a diameter of D1 is stretched, and obtains the material to be processed that equivalent diameter is d2；Then it is d2's to equivalent diameter
Material to be processed carry out it is continuously extruded, obtain equivalent diameter be D2 extruded product；To equivalent diameter for the extruded product of D2 enters
Row stretching, obtains the material to be processed that equivalent diameter is d3；To equivalent diameter for the material to be processed of di carries out continuously extruded, obtain
It is the extruded product of Di to equivalent diameter, to equivalent diameter for the extruded product of Di is stretched, obtains equivalent diameter for d (i+
1) material to be processed, the i is for positive integer and more than or equal to 2；Continuously extruded-stretching is repeated until obtaining finished product；
The D1 is more than d1, and the D1 is more than d2；The D2 is more than d2, and the D2 is more than d3；The Di is more than di, described
Di is more than d (i+1).
Preferably, the D1=D2=Di.
Preferably, the d1=d2=di=d (i+1).
Work as D1=D2=Di, during d1=d2=di=d (i+1), define a circulation；One circulation is：It is continuous to squeeze
Press and this continuously extruded resulting product is stretched；After being circulated through n, nominal accumulation strain amount is：
In formula 1, n is cycle-index, D=D1=D2=Di, d=d1=d2=di=d (i+1).
Preferably, the i is selected from any one integer in 2-10.Any one is whole in more preferably 3-5
Count, be still more preferably 3 or 4.
In the present invention, to equivalent diameter for the material to be processed of d1 is the extruding of D1 by being continuously extruded into equivalent diameter
Product；To equivalent diameter for the extruded product of D1 is stretched, the material to be processed that equivalent diameter is d2 is obtained；Now n is calculated as
1。
The present invention proposes a kind of continuous large plastometric set method for circulating continuously extruded-stretching, including by a diameter of d
Bar material the extruded product (i.e. D be more than d) of a diameter of D is continuously extruded into using expanded mode technology, be then drawn into again straight
Footpath is the wire rod of d, and by the wire rod of a diameter of d, it is the product of a diameter of D to extend continuously extruded, is so circulated with reality
Existing continuous large plastometric set.
In the present invention, to equivalent diameter for the extruded product of Di is stretched, equivalent diameter treating for d (i+1) is obtained
During rapidoprint, d (i+1) directly can be disposably stretched to, also can be stretched to d (i+1) through multi-pass.
Preferably, Di/di=1.5-1.8, more preferably 1.55-1.6.
Preferably, described continuously extruded and stretching environment temperature is room temperature.
A kind of equipment of continuous large plastometric set of the present invention, the equipment includes continuous extrusion device and stretching device, institute
Stating continuous extrusion device includes charging part, extruder member, plug, extrusion die；The material sent into is extruded through continuous extrusion device
Afterwards, obtain setting the extruded product of equivalent diameter；The stretching device includes stretching die；After the treatment of material drawn device, obtain
To the elongated article of setting equivalent diameter.
A kind of equipment of continuous large plastometric set of the present invention, the charging part is taken turns for charging, and the extruder member is crowded
Pinch roller.
A kind of equipment of continuous large plastometric set of the present invention, the continuous extrusion device also includes sealing groove block and boots housing.
A kind of equipment of continuous large plastometric set of the present invention, the gap between the extruding wheel and sealing groove block is d.
A kind of equipment of continuous large plastometric set of the present invention, material to be extruded through charging wheel feeding extruding wheel and sealing groove block it
Between gap, through being extruded in extruding wheel feeding extrusion die, the plug prevents material to be extruded from being extruded wheel to take out of.
A kind of application of the method for continuous large plastometric set of the present invention, including methods described is used for fine aluminium, aluminium alloy, magnesium
At least one in alloy, copper alloy.Preferably pure aluminum or aluminum alloy.
A kind of application of the method for continuous large plastometric set of the present invention, preferably, the aluminium alloy be selected from 1XXX,
At least one in 3XXX and 5XXX aluminium alloys.
Industrial application for convenience, D=D1=D2=Di, d=d1=d2=di=d (i+1) in the present invention.
Principle and advantage
Conform is continuously extruded special deformation thermodynamic condition, and its deformation temperature becomes as metal constantly enters
Shape area can gradually rise because of the collective effect of plastic deformation heat and frictional heat, and there is a violent shear band in deformed area
(Intense Internal Shear Band, IISB), IISB can not only improve the uniformity of deformation and can improve metal
Plastic deformation ability.Meanwhile, it is continuously extruded during alloy there occurs strong detrusion, produce substantial amounts of dislocation and position
Mistake is tangled, and forms the less subgrain structure of misorientation；With the aggravation of deformation extent, the temperature of alloy is raised, and promotes dynamic
The generation of recrystallization, low-angle boundary makes subgrain gradually be transformed into carefully by absorbing the modes such as dislocation great achievement high-angle boundary long
Small uniform equiax crystal, is effectively improved the combination property of material.Using computer modeling technique by being continuously extruded into
The Study on Temperature Field of shape process, shows deformable body while plastic deformation due to frictional heat and deformation heat effect deformable body and mould
The temperature field of tool constantly changes.The temperature of blank rises to 400~500 DEG C of exit from 20 DEG C of porch, extruding
Temperature reaches higher during copper alloy, and deformation temperature increases with the increase of extrusion wheel velocity.
Drawing can realize the cold deformation of certain deflection, and alloy produces processing hardening in this process, and intensity is improved
And plasticity reduction, big flow shape is generally realized by intermediate annealing process.
Large plastometric set structure refinement mechanism is as the increase of deformation produces a large amount of dislocations, dislocation to interact to form height
Angle grain boundary, so that the continuous dynamic recrystallization of strain-induced, crystal grain thinning.Therefore, large plastometric set is generally carried out at room temperature.
But material plasticity is poor at room temperature, usually easily produce big processing to harden or be broken, and organize extremely unstable after deformation, because
This, the present invention is cleverly carried out large plastometric set with combined with heat treatment, to improve material property.The present invention is by suitable work
Dress and mold design so that material can increase in continuously extruded rear cross sectional dimensions, and can become in subsequent stretcher strain
Shape so can constantly be circulated and realize large plastometric set to original size, improve material property.
The present invention has the advantage that
(1) be a kind of simple possible continuous large plastometric set method, can be widely applied to long length middle small dimension pipe,
Rod, type, wire production；
(2) product structure property is uniform；
(3) it is hot and cold to deform alternately, it is possible to use continuously extruded drawing cold deformation to be entered at Mobile state annealing or timeliness
Reason；
(4) extruding after being circulated through different passages or drawing product can be respectively obtained.
Brief description of the drawings
Accompanying drawing 1 is the structure and technological principle schematic diagram of the designed equipment of the present invention.
Specific embodiment：
Embodiment 1
First, the al alloy disk round bar material of continuous casting and rolling 1050 of a diameter of d=9.5mm is continuously squeezed using expanded mode technology
The extruded product of a diameter of D=15mm is pressed into, extruding wheel speed is 22rpm, and extruding outlet temperature is 460 DEG C, goes out die orifice
1500mm enters tank into cooling, drying, winding；Then, by the extruded product of a diameter of D=15mm by drawing after 8 passages
Into the line bar of a diameter of d=9.5mm；To be reused after the drawing line bar surface clean of a diameter of d=9.5mm, rinsing, drying
Expanded mode technology, is continuously extruded into the extruded product of a diameter of D=15mm under the same conditions.So circulation 4 times, measures respectively
Each passage is continuously extruded and drawing after 1050 Aluminum alloy tensile mechanical properties, as a result such as table 1, it is seen that its mechanical property is obtained
Significantly improve.
The tensile mechanical properties that 1 1050 aluminium alloy of table is circulated after continuously extruded and drawing for n times
Claims (10)
1. a kind of method of continuous large plastometric set, it is characterised in that：
By equivalent diameter for the material to be processed of d1 is the extruded product of D1 by being continuously extruded into equivalent diameter；To equivalent diameter
For the extruded product of D1 is stretched, the material to be processed that equivalent diameter is d2 is obtained；Then it is the to be added of d2 to equivalent diameter
Work material carry out it is continuously extruded, obtain equivalent diameter be D2 extruded product；To equivalent diameter for the extruded product of D2 draws
Stretch, obtain the material to be processed that equivalent diameter is d3；To equivalent diameter for the material to be processed of di carries out continuously extruded, worked as
The extruded product of a diameter of Di is measured, to equivalent diameter for the extruded product of Di is stretched, it is d's (i+1) to obtain equivalent diameter
Material to be processed, the i is for positive integer and more than or equal to 2；Continuously extruded-stretching is repeated until obtaining finished product；
The D1 is more than d1, and the D1 is more than d2；The D2 is more than d2, and the D2 is more than d3；The Di is more than di, and the Di is big
In d (i+1).
2. the method for a kind of continuous large plastometric set according to claim 1, it is characterised in that：The D1=D2=Di.
3. the method for a kind of continuous large plastometric set according to claim 1, it is characterised in that：The d1=d2=di=
d(i+1)。
4. the method for a kind of continuous large plastometric set according to claim 1, it is characterised in that：Work as D1=D2=Di, d1
During=d2=di=d (i+1), a circulation is defined；One circulation is：It is continuously extruded and to this continuously extruded gained
Product is stretched；After being circulated through n, nominal accumulation strain amount is：
In formula 1, n is cycle-index, D=D1=D2=Di, d=d1=d2=di=d (i+1).
5. the method for a kind of continuous large plastometric set according to claim 4, it is characterised in that：The i is selected from 2-10
Any one integer.
6. the method for a kind of continuous large plastometric set according to claim 1, it is characterised in that：Described continuously extruded and drawing
The environment temperature stretched is room temperature.
7. the equipment used by a kind of method of continuous large plastometric set as claimed in any one of claims 1 to 6, it is characterised in that：
The equipment includes continuous extrusion device and stretching device, and the continuous extrusion device includes charging part, extruder member, blocks up
Head, extrusion die；After the material sent into is extruded through continuous extrusion device, obtain setting the extruded product of equivalent diameter；The stretching
Device includes stretching die；After the treatment of material drawn device, obtain setting the elongated article of equivalent diameter.
8. the equipment of a kind of continuous large plastometric set according to claim 7, it is characterised in that：The charging part is to add
Material wheel, the extruder member is extruding wheel；
The continuous extrusion device also includes sealing groove block and boots housing；
Gap between the extruding wheel and sealing groove block is d.
9. the equipment of a kind of continuous large plastometric set according to claim 8, it is characterised in that：Material to be extruded is through charging
Gap between wheel feeding extruding wheel and sealing groove block, through being extruded in extruding wheel feeding extrusion die, the plug prevents to wait to squeeze
Pressure material is extruded wheel and takes out of.
10. a kind of application of the method for continuous large plastometric set as claimed in any one of claims 1 to 6, it is characterised in that：Bag
Include at least one that methods described is used in fine aluminium, aluminium alloy, magnesium alloy, copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710100830.5A CN106825091B (en) | 2017-02-23 | 2017-02-23 | Its application of the method and device therefor of a kind of continuous large plastometric set |
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| CN201710100830.5A CN106825091B (en) | 2017-02-23 | 2017-02-23 | Its application of the method and device therefor of a kind of continuous large plastometric set |
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Cited By (2)
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| CN108746229A (en) * | 2018-05-11 | 2018-11-06 | 芜湖恒泰有色线材股份有限公司 | A kind of alternating-current resistance welding wire continuous cold drawing-die tool |
| CN112384313A (en) * | 2018-07-05 | 2021-02-19 | 费罗伦股份公司 | Continuous process for producing non-ferrous alloy prepared capillaries |
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| CN108746229A (en) * | 2018-05-11 | 2018-11-06 | 芜湖恒泰有色线材股份有限公司 | A kind of alternating-current resistance welding wire continuous cold drawing-die tool |
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| CN106825091B (en) | 2018-08-14 |
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