CN110180908A - The towed equal channel pressings processing technology of one kind - Google Patents
The towed equal channel pressings processing technology of one kind Download PDFInfo
- Publication number
- CN110180908A CN110180908A CN201910521080.8A CN201910521080A CN110180908A CN 110180908 A CN110180908 A CN 110180908A CN 201910521080 A CN201910521080 A CN 201910521080A CN 110180908 A CN110180908 A CN 110180908A
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- China
- Prior art keywords
- blank
- pull rod
- squeezing passage
- entrance
- extrusion head
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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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/005—Continuous extrusion starting from solid state material
-
- 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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The present invention relates to the towed equal channel pressings processing technologys of one kind, including mold, squeezing passage, extrusion head and pull rod；Extrusion process step are as follows: blank a is put into squeezing passage, extrusion head extrusion billet a, when blank a squeezes into the round corner section of squeezing passage completely, extrusion head exits, then blank b is put into, pull rod enters channel and is bonded with the front end blank a simultaneously, then proceedes to squeeze, the front end of blank a is made to be filled with the pull rod slot of pull rod；Continue to squeeze, pull rod applies pulling force to blank a simultaneously, after blank a is squeezed out from the round corner section of squeezing passage completely, blank b initially enters the round corner section of squeezing passage, pressure head is exited from entrance, then blank c is placed on entrance, stops squeezing, while making pull rod by the outlet section of blank a pull-out squeezing passage；After blank a is pulled out, pull rod is separated with blank a, the pull rod after separation is again introduced into squeezing passage, recycles above-mentioned steps repeatedly, realizes trail-type equal channel pressings.
Description
Technical field
The invention belongs to metal material large plastometric set processing method fields, more particularly to the towed equal channel pressings of one kind
Processing technology.
Background technique
Equal Channel Angular Pressing is prepared with the relatively effective plastic deformation side of high-performance bulk super fine crystal material
Method.
Its technique is to pass through sample by application external pressure and squeeze out the die channel with certain corner, works as sample
When being extruded to the friendship section in two channels, can generate it is strong shear-deformable to generate biggish shear strain, by deforming
The effect of intimate pure shear, achievees the purpose that refiner material crystal grain in journey.
In the prior art, due to the presence of metal material mold corner in extrusion process, it is unfavorable for material in channel
Flowing, hinder sample extrusion mould-outlet, mold be easy stress it is excessive, cause to damage.Therefore how that material is suitable in a mold
Benefit squeezes out, reduces mold stress simultaneously, prevents burn failure from becoming those skilled in the art's urgent problem.
Summary of the invention
The present invention is to solve technical problem present in well-known technique and provide one kind and be conducive to material flowing extrusion, mold
The channel pressings processing technologys such as it is towed that stress is small, die life is long.
The technical scheme adopted by the present invention to solve the technical problems existing in the known art is that a kind of towed wait is led to
Road extrusion-processing technology, the squeezing passage being arranged including mold and in a mold, the squeezing passage are equal diameter through-hole, institute
It states squeezing passage and is divided into entrance, round corner section and outlet section, being equipped at the entrance of squeezing passage makes with squeezing passage cooperation
Extrusion head, outlet section are equipped with the pull rod being used cooperatively with squeezing passage, and the pull rod front end is provided with pull rod slot；It is towed
Extrusion process passes through extrusion head extrusion billet a, base the following steps are included: S1, blank a to be put into the entrance of squeezing passage
Material a enters round corner section in the entrance of squeezing passage, and blank a carries out shear-deformable in round corner section；S2, it is squeezed into completely as blank a
When the round corner section of squeezing passage, extrusion head is exited from the entrance of squeezing passage, and blank b is then put into entering for squeezing passage
Mouthful section, while pull rod enters the outlet section of squeezing passage, and the front end of pull rod is bonded with the front end blank a, then extrusion head after
It is continuous to squeeze, move blank a and blank b in squeezing passage, the front end of blank a is filled with the pull rod slot of pull rod；
S3, extrusion head continue to squeeze, while pull rod applies pulling force F to blank a, under the action of extruding force and tractive force
Blank a passes through squeezing passage round corner section；S4, when blank a completely from the round corner section of squeezing passage squeeze out after, blank b starts at this time
Into the round corner section of squeezing passage, extrusion head is exited from the entrance of squeezing passage, and blank c is then placed on squeezing for mold
The entrance of pressure passageway stops extrusion head and squeezes, while making pull rod by the outlet section of blank a pull-out squeezing passage；S5, blank
After a pulls out the outlet section of squeezing passage, pull rod is separated with blank a, the pull rod after separation is again introduced into the outlet of squeezing passage
Section, and the front end of pull rod is bonded with the front end blank b, then extrusion head continues to squeeze, and makes blank b and blank c in squeezing passage
Interior movement, blank b are filled with the pull rod slot of pull rod；Above-mentioned steps are recycled repeatedly, realize trail-type equal channel pressings.
Preferably: the extrusion head is driven by hydraulic press.
Preferably: the pull rod is Z-shaped by Driven by Hydraulic Cylinder, the pull rod slot of the pull rod.
Preferably: the pulling force F expression formula that the pull rod applies are as follows: the pulling force F expression formula that the pull rod applies are as follows:
F=σsA
Wherein σsFor the yield stress of material, unit MPa, A are to wait channel pressings die channel sectional area, and unit is
mm2。
Preferably: the squeezing passage is L shape, and wherein the entrance of squeezing passage is the vertical section of L shape squeezing passage, goes out
Mouth section is the horizontal segment of L shape squeezing passage.
The advantages and positive effects of the present invention are:
1, by etc. channel pressings mold squeezing passage in pull rod tractive force that blank is applied, due to tractive force
In the presence of mold corner vias inner walls stress being reduced, so that mold be prevented to be damaged because of long-term work.
2, the material that the elastic part that the tractive force that pull rod applies can offset material generates is in radial dimension of variation,
The radial dimension for squeezing die orifice position material slightly reduces, to be conducive to material flowing, reduces mold stress, prevents mold from damaging
It is bad.
3, can be in blank after being squeezed out in channel using Z-shaped pull rod slot, easy-unloading saves process time.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention；
Fig. 2 is the main view of the pull rod in the present invention；
Fig. 3 is the top view of the pull rod in the present invention；
Fig. 4 is extrusion process schematic diagram of the invention.
In figure: 1, extrusion head；2, squeezing passage；3, mold；4, pull rod；A, blank a；B, blank b；C, blank c.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
In order to further understand the content, features and effects of the present invention, hereby lifting following embodiment, detailed description are as follows:
- Fig. 4 referring to Figure 1, the towed equal channel pressings processing technology of one kind of the invention, including mold 3 and in mold
The squeezing passage 2 being arranged in 3, squeezing passage 2 are equal diameter through-hole, and the squeezing passage 2 divides for entrance, round corner section and outlet
Section, squeezing passage 2 are L shape, and wherein the entrance of squeezing passage 2 is the vertical section of L shape squeezing passage 2, outlet section is that L shape squeezes
The horizontal segment in channel 2；Extrusion head 1, the outlet section being used cooperatively with squeezing passage 2 are equipped at the entrance of squeezing passage 2
Equipped with the pull rod 4 being used cooperatively with squeezing passage 2,4 front end of pull rod is provided with pull rod slot, and pull rod 4 passes through Driven by Hydraulic Cylinder, pull rod 4
Pull rod slot be it is Z-shaped；The pulling force F expression formula that pull rod 4 applies are as follows:
F=σsA
Wherein σsFor the yield stress of material, unit MPa, A are to wait channel pressings die channel sectional area, and unit is
mm2。
To diameter 40mm, 5083 aluminum alloy blank of cylinder of high 62.5mm carries out towed Deng channel pressings at room temperature
Processing, concrete operations are as follows:
S1, the entrance that 5083 aluminum alloy blank a are put into squeezing passage 2 squeeze 5083 aluminium alloys by extrusion head 1
Blank a, 5083 aluminum alloy blank a enter round corner section in the entrance of squeezing passage 2,5083 aluminum alloy blank a round corner section into
Row is shear-deformable；
S2, when 5083 aluminum alloy blank a squeeze into the round corner section of squeezing passage 2 completely, extrusion head 1 is from squeezing passage 2
Entrance exit, then 5083 aluminum alloy blank b are put into the entrance of squeezing passage 2, while pull rod 4 enters squeezing passage
2 outlet section, and the front end of pull rod 4 is bonded with 5083 front ends aluminum alloy blank a, then extrusion head 1 continues to squeeze, and makes 5083
Aluminum alloy blank a and 5083 aluminum alloy blank b are moved in squeezing passage 2, and the front end of 5083 aluminum alloy blank a is filled with pull rod 4
Pull rod slot；
S3, extrusion head 1 continue to squeeze, while pull rod 4 applies pulling force F to 5083 aluminum alloy blank a, in the present embodiment,
Pulling force F is the tractive force of 138kN.5083 aluminum alloy blank a the turning by squeezing passage 2 under the action of extruding force and tractive force
Angle section；
S4, after 5083 aluminum alloy blank a are squeezed out from the round corner section of squeezing passage 2 completely, 5083 aluminum alloy blank b at this time
The round corner section of squeezing passage 2 is initially entered, extrusion head 1 is exited from the entrance of squeezing passage 2, then by 5083 aluminium alloy bases
Material c is placed on the entrance of the squeezing passage 2 of mold 3, stops extrusion head 1 and squeezes, while making pull rod 4 by 5083 aluminium alloy bases
Expect that a pulls out the outlet section of squeezing passage 2；
After S5,5083 aluminum alloy blank a pull out the outlet section of squeezing passage 2, by the aluminum alloy blank of pull rod 4 and 5083 a points
From the pull rod 4 after separation is again introduced into the outlet section of squeezing passage 2, and the front end of pull rod 4 and 5083 front ends aluminum alloy blank b
Fitting, then extrusion head 1 continues to squeeze, and transports 5083 aluminum alloy blank b and 5083 aluminum alloy blank c in squeezing passage 2
Dynamic, 5083 aluminum alloy blank b are filled with the pull rod slot of pull rod 4；Above-mentioned steps are recycled repeatedly, realize 5083 aluminum alloy blanks
Trail-type equal channel pressings.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. the towed equal channel pressings processing technology of one kind, it is characterised in that: be arranged including mold (3) and in mold (3)
Squeezing passage (2), the squeezing passage (2) are equal diameter through-hole, and the squeezing passage (2) is divided into entrance, round corner section and goes out
Mouth section is equipped with extrusion head (1), the outlet section being used cooperatively with squeezing passage (2) at the entrance of squeezing passage (2) and is equipped with
The pull rod (4) being used cooperatively with squeezing passage (2), pull rod (4) front end are provided with pull rod slot；
Towed extrusion process the following steps are included:
S1, the entrance that blank a is put into squeezing passage (2) are logical in extruding by extrusion head (1) extrusion billet a, blank a
The entrance in road (2) enters round corner section, and blank a carries out shear-deformable in round corner section；
S2, when blank a squeezes into the round corner section of squeezing passage (2) completely, entrance of the extrusion head (1) from squeezing passage (2)
It exits, then blank b is put into the entrance of squeezing passage (2), while pull rod (4) enters the outlet section of squeezing passage (2), and
The front end of pull rod (4) is bonded with the front end blank a, and then extrusion head (1) continues to squeeze, and makes blank a and blank b in squeezing passage
(2) movement in, the front end of blank a is filled with the pull rod slot of pull rod (4)；
S3, extrusion head (1) continue to squeeze, while pull rod (4) applies pulling force F to blank a, in the effect of extruding force and tractive force
Lower blank a passes through the round corner section of squeezing passage (2)；
S4, when blank a completely from the round corner section of squeezing passage (2) squeeze out after, blank b initially enters squeezing passage (2) at this time
Round corner section, extrusion head (1) are exited from the entrance of squeezing passage (2), and the extruding that blank c is then placed on mold (3) is logical
The entrance in road (2) stops extrusion head (1) and squeezes, while making pull rod (4) by the outlet of blank a pull-out squeezing passage (2)
Section；
After S5, blank a pull out the outlet section of squeezing passage (2), pull rod (4) is separated with blank a, the pull rod (4) after separation is again
The secondary outlet section for entering squeezing passage (2), and the front end of pull rod (4) is bonded with the front end blank b, then extrusion head (1) continues
It squeezes, blank b and blank c movement, blank b in squeezing passage (2) is made to be filled with the pull rod slot of pull rod (4)；It recycles repeatedly
Above-mentioned steps realize trail-type equal channel pressings.
2. the towed equal channel pressings processing technology of one kind as described in claim 1, it is characterized in that: the extrusion head (1)
It is driven by hydraulic press.
3. the towed equal channel pressings processing technology of one kind as described in claim 1, it is characterized in that: the pull rod (4) passes through
Driven by Hydraulic Cylinder, the pull rod slot of the pull rod (4) are Z-shaped.
4. the towed equal channel pressings processing technology of one kind as described in claim 1, it is characterized in that: the pull rod (4) applies
Pulling force F expression formula are as follows:
F=σsA
Wherein σsFor the yield stress of material, unit MPa, A are to wait channel pressings die channel sectional area, unit mm2。
5. the towed equal channel pressings processing technology of one kind as described in claim 1, it is characterized in that: the squeezing passage (2)
For L shape, wherein the entrance of squeezing passage (2) is the vertical section of L shape squeezing passage (2), outlet section is L shape squeezing passage (2)
Horizontal segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521080.8A CN110180908B (en) | 2019-06-17 | 2019-06-17 | Traction type equal-channel extrusion processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521080.8A CN110180908B (en) | 2019-06-17 | 2019-06-17 | Traction type equal-channel extrusion processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110180908A true CN110180908A (en) | 2019-08-30 |
| CN110180908B CN110180908B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910521080.8A Expired - Fee Related CN110180908B (en) | 2019-06-17 | 2019-06-17 | Traction type equal-channel extrusion processing technology |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044123A (en) * | 1983-08-20 | 1985-03-09 | Nippon Light Metal Co Ltd | Manufacture of extruded section having small diameter hole |
| EP0822017A1 (en) * | 1996-07-24 | 1998-02-04 | SMS EUMUCO GmbH | Drive arrangement for a metal extrusion press |
| CN101099978A (en) * | 2007-08-14 | 2008-01-09 | 重庆大学 | Magnesium alloy extrusion deforming processing method |
| CN101889098A (en) * | 2008-10-27 | 2010-11-17 | 塔塔钢铁有限公司 | Produce gap-free atom (IF) steel of superfine crystal particle by equal channel angular extruding (ECAE) |
| CN104275359A (en) * | 2014-08-28 | 2015-01-14 | 天津理工大学 | Equal-channel shear deformation extrusion hydraulic press for magnesium alloy |
| CN104550296A (en) * | 2014-11-20 | 2015-04-29 | 天津理工大学 | Magnesium alloy material equal channel angular cold extrusion molding device |
-
2019
- 2019-06-17 CN CN201910521080.8A patent/CN110180908B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044123A (en) * | 1983-08-20 | 1985-03-09 | Nippon Light Metal Co Ltd | Manufacture of extruded section having small diameter hole |
| EP0822017A1 (en) * | 1996-07-24 | 1998-02-04 | SMS EUMUCO GmbH | Drive arrangement for a metal extrusion press |
| CN101099978A (en) * | 2007-08-14 | 2008-01-09 | 重庆大学 | Magnesium alloy extrusion deforming processing method |
| CN101889098A (en) * | 2008-10-27 | 2010-11-17 | 塔塔钢铁有限公司 | Produce gap-free atom (IF) steel of superfine crystal particle by equal channel angular extruding (ECAE) |
| CN104275359A (en) * | 2014-08-28 | 2015-01-14 | 天津理工大学 | Equal-channel shear deformation extrusion hydraulic press for magnesium alloy |
| CN104550296A (en) * | 2014-11-20 | 2015-04-29 | 天津理工大学 | Magnesium alloy material equal channel angular cold extrusion molding device |
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| Publication number | Publication date |
|---|---|
| CN110180908B (en) | 2020-06-02 |
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Effective date of registration: 20200902 Address after: 063500 north side of tangle highway, songdaokou Town, LUANNAN COUNTY, Tangshan City, Hebei Province Patentee after: Tangshan Hantang Tool Manufacturing Co.,Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 438 Patentee before: Yanshan University |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200602 |