CN105436228A - Bi-directional continuous shear deformation device and method - Google Patents
Bi-directional continuous shear deformation device and method Download PDFInfo
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- CN105436228A CN105436228A CN201510924529.7A CN201510924529A CN105436228A CN 105436228 A CN105436228 A CN 105436228A CN 201510924529 A CN201510924529 A CN 201510924529A CN 105436228 A CN105436228 A CN 105436228A
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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
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
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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
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a bi-directional continuous shear deformation device which comprises an axial hollow variable cross-section annular extrusion barrel, a variable cross-section core rod, an upper fixing pressure plate, a lower fixing pressure plate, an upper annular extrusion punch, a lower annular extrusion punch and a rotating working table, wherein the upper end of the variable cross-section annular extrusion barrel is connected with the upper fixing pressure plate, and the lower end of the variable cross-section annular extrusion barrel is connected with the lower fixing pressure plate; a groove is formed in the inner wall surface of the variable cross-section annular extrusion barrel; the variable cross-section core rod is arranged on the inner side of the variable cross-section annular extrusion barrel, and is provided with a bulge matched with the groove; the upper annular extrusion punch penetrates through a first through hole of the upper fixing pressure plate to be connected with the upper end of the variable cross-section core rod; the lower annular extrusion punch penetrates through a second through hole of the lower fixing pressure plate to be connected with the lower end of the variable cross-section core rod; and the lower fixing pressure plate is arranged on the rotating working table. According to the bi-directional continuous shear deformation device, a necking down zone in traditional reciprocating extrusion is transformed into a smoothly transitional continuous shear channel, so that the shear uniformity of tubular blanks in the cross section direction is improved.
Description
Technical field
The present invention relates to plastic forming technology, particularly, relate to a kind of two-way continuous confined strip shearing device and method.
Background technology
Super fine crystal material integrates excellent intensity and the high performance material of good plasticity and toughness.And severe Plastic Deformation Methods (SPD) has significant grain refining capability, be a kind ofly generally acknowledged prepare Ultra-fine Grained (grain size is 100nm-1um) and the most promising method of block nanometer (crystal grain is less than 100nm) material.
Through finding the literature search of prior art, publication number is the Chinese invention patent of CN103894436A, denomination of invention: a kind of reciprocating extrusion device and processing method strengthening magnesium-alloy tube, this technology carries out multi-pass processing by the reciprocating extruding of ring-type to magnesium-alloy tube, realize the continuous modification of " magnesium-alloy tube---magnesium alloy block---magnesium-alloy tube ", prepare that crystal grain is tiny, the magnesium-alloy tube of even tissue.But this device and processing method are in actual applications, along with " pipe " " block " checker, constantly there is the convolution of the exposed and stain surfaces in clean metal surface, cause the tubing obtained to there is obvious tissue defects; Meanwhile, the tubing that the method obtains is real is tubular construction, and after reciprocating extrusion distortion terminates, often needing follow-up machined, is tubular-shaped structures by tubular construction secondary operations, and therefore, tube billet consume is serious, and production efficiency is low.
Further retrieval finds, the people such as L.S.Toth are at " ScriptaMaterialia ", 2009, in " Severeplasticdeformationofmetalsbyhigh-pressuretubetwist ing " (high pressure tubular torsion large plastometric set) literary composition that 60:175-177 delivers, propose the high pressure tubular torsion device for the preparation of Ultra-fine Grained, even nanocrystalline tubing.The elastic expansion that this device produces after utilizing plug axial compression, is tightly clipped in tube-shaped parison between recipient and plug, forms huge hydrostatic pressure in tubing inside; Meanwhile, reverse recipient, make tube-shaped parison through-thickness generation continuous shear stress.By this device for the preparation of aluminium alloy pipe, die only circumference rotates 30 °, and the crystal grain of aluminium alloy pipe inside obtains obvious refinement immediately.But nearly all crystal grain all along tubing axis generation shear to a certain degree, presents elliptical shape; Meanwhile, when aluminium alloy pipe outer radius shear strain amount reaches 14, shear strain amount in pipe internal diameter place is only 2, and the shear strain namely reversing generation is extremely uneven along pipe thickness direction.In addition, although this torsional strain can infinitely increase in theory, the friction between tube billet and mould limits the increase of torsional strain, and above-mentioned a series of shortcoming seriously constrains the application of the method in the Ultra-fine Grained tubular material preparation of even tissue.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of two-way continuous confined strip shearing device and method.
According to the two-way continuous confined strip shearing device that one aspect of the invention provides, comprise the variable cross-section annular extrusion cylinder of axial hollow, variable cross-section core bar, upper fixed platen, lower fixed platen, upper annular extrusion drift, lower annular extrusion drift and torsional mode workbench;
Wherein, the upper end of described variable cross-section annular extrusion cylinder connects fixed platen, and lower end connects described lower fixed platen;
The internal face of described variable cross-section annular extrusion cylinder is provided with groove; Described variable cross-section core bar is arranged on the inner side of described variable cross-section annular extrusion cylinder; Described variable cross-section core bar is provided with the projection with described groove match;
Described upper annular extrusion drift connects the upper end of described variable cross-section core bar through the first through hole of fixed platen; Described lower annular extrusion drift connects the lower end of described variable cross-section core bar through the second through hole of described lower fixed platen;
Described lower fixed platen is arranged on described torsional mode workbench, when described torsional mode workbench drives described lower fixed platen, described variable cross-section annular extrusion cylinder and fixed platen with the first rotary speed movement, described variable cross-section core bar, described upper annular extrusion drift and described lower annular extrusion drift keep motionless or with the second rotary speed movement, described second rotating speed is less than described first rotating speed.
Preferably, described variable cross-section annular extrusion cylinder comprises the first semi-circular cylindrical shell and the second semi-circular cylindrical shell;
Wherein, be close to relative with the opening of described second semi-circular cylindrical shell of described first semi-circular cylindrical shell forms described variable cross-section annular extrusion cylinder;
Described first semi-circular cylindrical shell is connected fixed platen with the upper end of described second semi-circular cylindrical shell by a steady pin, and described first semi-circular cylindrical shell is connected described lower fixed platen with the lower end of described second semi-circular cylindrical shell by another steady pin.
Preferably, the center of described upper annular extrusion drift and described lower annular extrusion drift is through-hole structure; The two ends equal diameters of described through-hole structure and described variable cross-section core bar.
Preferably, there is the groove of arc transition at half high position place of described variable cross-section annular extrusion cylinder, and the inner surface of described variable cross-section annular extrusion cylinder is through roughening process; Half high position of described variable cross-section core bar is equipped with the circular arc of described groove match protruding.
Preferably, arbitrary longitudinal cross-section of the die cavity formed between described variable cross-section annular extrusion cylinder and variable cross-section core bar is symmetrical combined channel structure;
Described combined channel comprises the upper linear path, circular arc passage, the lower linear path that are communicated with in turn; For seamlessly transitting between described upper linear path and described circular arc passage and between described lower linear path and described circular arc passage.
The two-way continuous confined strip shearing method that another aspect of the present invention provides, the two-way continuous confined strip shearing device described in employing, comprises the steps:
Step S1, lower fixed platen to be fixed on torsional mode workbench, and two panels semi-circular recipient is fixed on the upper makeup ring shape recipient of lower fixed platen; Insert variable cross-section core bar, put into tube-shaped parison, upper fixed platen is fixed on annular extrusion cylinder through variable cross-section core bar; Put into annular extrusion drift, in guarantee, annular extrusion drift contacts with tube-shaped parison, puts into lower annular extrusion drift, and lower annular extrusion drift is risen to the position of lower linear path and circular arc passages intersect;
Step S2, upper annular extrusion drift to be exerted pressure, make the tube-shaped parison generation crimp being placed in linear path in advance, enter circular arc passage;
Step S3, when tube-shaped parison head contacts with the lower annular punch being placed in lower linear path in advance, increase the extruding force of seaming chuck, same annular punch at present oppositely applies back pressure to tube-shaped parison, open torsional mode workbench, make tube-shaped parison that extruding and torsional deflection occur, until tube-shaped parison leaves linear path completely, enter circular arc passage and lower linear path, stop advancing, complete the first passage processing;
Annular extrusion drift, lower annular extrusion drift in step S4, reverse drive, reverse two-way continuous confined strip shearing device makes tube-shaped parison twist distortion simultaneously, until tube-shaped parison leaves lower linear path completely, enter circular arc passage and upper linear path, stop advancing, complete the second passage processing.
Preferably, also comprise the steps:
-repeat step S2 ~ step S3, realize the two-way continuous confined strip shearing of multi-pass.
Preferably, in step S3 or step S4, also comprise the steps:
When tube-shaped parison is along with the upper or downward movement of upper annular extrusion drift and lower annular extrusion drift, continue through the die cavity of circular arc, along its cross-sectional direction generation continuous shear stress;
Through the variable cross-section annular extrusion cylinder of surface roughening process in twist motion time, under frictional force effect, drive the external diameter of tube-shaped parison to carry out circumferential movement with the first rotating speed, and the internal diameter of tube-shaped parison contacts with variable cross-section core bar, there is not or occur the circumferential movement of the second rotating speed, make tube-shaped parison, along pipe thickness direction, continuous shear stress occur;
Described second rotating speed is less than described first rotating speed.
Preferably, add man-hour when tubing to be processed is not suitable for maybe carrying out normal temperature, tube-shaped parison and two-way continuous confined strip shearing device can carry out In Situ Heating by heating jacket.
Preferably, the pressure acting on the upstream or downstream of variable cross-section core bar is: 40t ~ 1000t, and extrusion speed is 0.1mm/s ~ 10mm/s;
The pressure of described back pressure is: 400MPa ~ 10GPa;
The circumferential spinning rate of described torsional mode workbench is 0.1rpm ~ 10rpm, and the windup-degree scope of applying is 30 ° ~ 360 °.
The purposes of the described two-way continuous confined strip shearing device that another aspect of the present invention provides in the Ultra-fine Grained tubular material preparation of simple metal, alloy, intermetallic compound, composite, macromolecular material or semi-conducting material.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention changes the necking down district in conventional reciprocating extruding into seamlessly transit continuous shear stress passage, improves the shearing uniformity of tube-shaped parison in cross-sectional direction;
2, the reciprocating extrusion that the present invention adopts makes tube-shaped parison Multiple through then out circular arc-shaped corner passage, and effective refinement matrix grain, reduces the size dispersity of matrix grain simultaneously, improve structural homogenity;
3, the present invention makes tube-shaped parison, along pipe thickness direction, continuous shear stress occur by the axial torsion of annular extrusion cylinder, further increases the degree of grain refinement.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the semi-section structural representation of two-way continuous confined strip shearing mould in the present invention;
Fig. 2 is the circular arc passage die cavity schematic diagram that recipient and core bar are formed;
In figure:
1, upper annular extrusion drift;
2, upper fixed platen;
3, variable cross-section annular extrusion cylinder;
4, hold-down nut;
5, lower fixed platen;
6, torsional mode workbench;
7, variable cross-section core bar;
8, steady pin;
9, tube-shaped parison;
10, die cavity;
11, standing screw;
12, pad;
13, lower annular extrusion drift.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
In the present embodiment, two-way continuous confined strip shearing device provided by the invention, comprises the variable cross-section annular extrusion cylinder 3 of axial hollow, variable cross-section core bar 7, upper fixed platen 2, lower fixed platen 5, upper annular extrusion drift 1, lower annular extrusion drift 13 and torsional mode workbench 6;
Wherein, the upper end of described variable cross-section annular extrusion cylinder 3 connects fixed platen 2, and lower end connects described lower fixed platen 5; The internal face of described variable cross-section annular extrusion cylinder 3 is provided with groove; Described variable cross-section core bar 7 is arranged on the inner side of described variable cross-section annular extrusion cylinder 3; Described variable cross-section core bar 7 is provided with the projection with described groove match;
The first through hole that described upper annular extrusion drift 1 passes fixed platen 2 connects the upper end of described variable cross-section core bar 7; The second through hole that described lower annular extrusion drift 13 passes described lower fixed platen 5 connects the lower end of described variable cross-section core bar 7;
Described lower fixed platen 5 is arranged on described torsional mode workbench 6, when described torsional mode workbench 6 drives described lower fixed platen 5, described variable cross-section annular extrusion cylinder 3 and fixed platen 2 with the first rotary speed movement, described variable cross-section core bar 7, described upper annular extrusion drift 1 and described lower annular extrusion drift 13 keep motionless or with the second rotary speed movement, described second rotating speed is less than described first rotating speed.
Described variable cross-section annular extrusion cylinder 3 comprises the first semi-circular cylindrical shell and the second semi-circular cylindrical shell; Wherein, be close to relative with the opening of described second semi-circular cylindrical shell of described first semi-circular cylindrical shell forms described variable cross-section annular extrusion cylinder 3;
Described first semi-circular cylindrical shell is connected fixed platen 2 with the upper end of described second semi-circular cylindrical shell by a steady pin 8, and described first semi-circular cylindrical shell is connected described lower fixed platen 5 with the lower end of described second semi-circular cylindrical shell by another steady pin 8.
The center of described upper annular extrusion drift 1 and described lower annular extrusion drift is through-hole structure; The two ends equal diameters of described through-hole structure and described variable cross-section core bar 7.There is the groove of arc transition at half high position place of described variable cross-section annular extrusion cylinder 3, and the inner surface of described variable cross-section annular extrusion cylinder 3 is through roughening process; Half high position of described variable cross-section core bar 7 is equipped with the circular arc of described groove match protruding.
The die cavity 10 formed between described variable cross-section annular extrusion cylinder 3 and variable cross-section core bar 7 is symmetrical combined channel structure on its arbitrary longitudinal cross-section; Described combined channel comprises the upper linear path, circular arc passage, the lower linear path that are communicated with in turn; Described upper linear path and described circular arc passage and between described lower linear path and described circular arc passage for seamlessly transitting.
Two-way continuous confined strip shearing method based on described two-way continuous confined strip shearing device provided by the invention, comprises the steps:
First lower fixed platen 5 is fixed on torsional mode workbench 6, and two panels semi-circular recipient is fixed on lower fixed platen 5 and forms the annular extrusion cylinder 3 that internal diameter is 50mm; Insert variable cross-section core bar 7, being specifically of a size of of this variable cross-section core bar: end diameter 30mm, variable cross-section maximum cross-section diameter is 50mm; Put into aluminium alloy pipe blank 9, the concrete physical dimension of this blank is: external diameter 50mm, wall thickness 10mm, length 120mm; Upper fixed platen 2 is fixed on annular extrusion cylinder 3 through variable cross-section core bar; Put into annular extrusion drift 1, in guarantee, annular extrusion drift 1 contacts with blank 8, puts into lower annular extrusion drift 13, and is risen to the position of die cavity 10 linear and circular arc passages intersect; 100t pressure is applied to upper annular extrusion drift 1, makes it that downward movement of 3mm/s occur, extrude the blank 9 being placed in linear path in advance simultaneously, enter circular arc passage.When blank 9 head contacts with the lower annular punch 13 being placed in lower linear path in advance, in increase, annular ram pressures is to 300t, same annular punch at present applies 600MPa back pressure to blank 9, open torsional mode workbench 6 and the torsion of 1r/min circumference occurs, make tube-shaped parison 9 that extruding and torsional deflection occur simultaneously, until blank leaves linear path completely, enter circular arc and lower linear path, stop advancing, complete the first passage processing.Annular extrusion drift, lower annular extrusion drift in reverse drive, simultaneously torsion module makes tube-shaped parison 9 twist distortion, until blank leaves lower linear path completely, enters circular arc and upper linear path, stops advancing, complete the second passage and process; Repeat above-mentioned steps, realize the distortion of multi-pass torsional mode reciprocating extrusion.After process finishing, in taking-up, annular extrusion drift, lower annular extrusion drift, open fixed platen 2, dismantles annular recipient 3, takes out tube billet 9 and variable cross-section core bar 7, thoroughly clear up mould, simultaneously coating die care agent.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. a two-way continuous confined strip shearing device, is characterized in that, comprises the variable cross-section annular extrusion cylinder of axial hollow, variable cross-section core bar, upper fixed platen, lower fixed platen, upper annular extrusion drift, lower annular extrusion drift and torsional mode workbench;
Wherein, the upper end of described variable cross-section annular extrusion cylinder connects fixed platen, and lower end connects described lower fixed platen;
The internal face of described variable cross-section annular extrusion cylinder is provided with groove; Described variable cross-section core bar is arranged on the inner side of described variable cross-section annular extrusion cylinder; Described variable cross-section core bar is provided with the projection with described groove match;
Described upper annular extrusion drift connects the upper end of described variable cross-section core bar through the first through hole of fixed platen; Described lower annular extrusion drift connects the lower end of described variable cross-section core bar through the second through hole of described lower fixed platen;
Described lower fixed platen is arranged on described torsional mode workbench, when described torsional mode workbench drives described lower fixed platen, described variable cross-section annular extrusion cylinder and fixed platen with the first rotary speed movement, described variable cross-section core bar, described upper annular extrusion drift and described lower annular extrusion drift keep motionless or with the second rotary speed movement, described second rotating speed is less than described first rotating speed.
2. two-way continuous confined strip shearing device according to claim 1, is characterized in that, described variable cross-section annular extrusion cylinder comprises the first semi-circular cylindrical shell and the second semi-circular cylindrical shell;
Wherein, be close to relative with the opening of described second semi-circular cylindrical shell of described first semi-circular cylindrical shell forms described variable cross-section annular extrusion cylinder;
Described first semi-circular cylindrical shell is connected fixed platen with the upper end of described second semi-circular cylindrical shell by a steady pin, and described first semi-circular cylindrical shell is connected described lower fixed platen with the lower end of described second semi-circular cylindrical shell by another steady pin.
3. two-way continuous confined strip shearing device according to claim 1, is characterized in that, the center of described upper annular extrusion drift and described lower annular extrusion drift is through-hole structure; The two ends equal diameters of described through-hole structure and described variable cross-section core bar.
4. two-way continuous confined strip shearing device according to claim 1, is characterized in that, there is the groove of arc transition at half high position place of described variable cross-section annular extrusion cylinder, and the inner surface of described variable cross-section annular extrusion cylinder is through roughening process; Half high position of described variable cross-section core bar is equipped with the circular arc of described groove match protruding.
5. two-way continuous confined strip shearing device according to claim 1, is characterized in that, arbitrary longitudinal cross-section of the die cavity formed between described variable cross-section annular extrusion cylinder and variable cross-section core bar is symmetrical combined channel structure;
Described combined channel comprises the upper linear path, circular arc passage, the lower linear path that are communicated with in turn; For seamlessly transitting between described upper linear path and described circular arc passage and between described lower linear path and described circular arc passage.
6. a two-way continuous confined strip shearing method, is characterized in that, adopts the two-way continuous confined strip shearing device described in any one of claim 1 to 5, comprises the steps:
Step S1, lower fixed platen to be fixed on torsional mode workbench, and two panels semi-circular recipient is fixed on the upper makeup ring shape recipient of lower fixed platen; Insert variable cross-section core bar, put into tube-shaped parison, upper fixed platen is fixed on annular extrusion cylinder through variable cross-section core bar; Put into annular extrusion drift, in guarantee, annular extrusion drift contacts with tube-shaped parison, puts into lower annular extrusion drift, and lower annular extrusion drift is risen to the position of lower linear path and circular arc passages intersect;
Step S2, upper annular extrusion drift to be exerted pressure, make the tube-shaped parison generation crimp being placed in linear path in advance, enter circular arc passage;
Step S3, when tube-shaped parison head contacts with the lower annular punch being placed in lower linear path in advance, increase the extruding force of seaming chuck, same annular punch at present oppositely applies back pressure to tube-shaped parison, open torsional mode workbench, make tube-shaped parison that extruding and torsional deflection occur, until tube-shaped parison leaves linear path completely, enter circular arc passage and lower linear path, stop advancing, complete the first passage processing;
Annular extrusion drift, lower annular extrusion drift in step S4, reverse drive, reverse two-way continuous confined strip shearing device makes tube-shaped parison twist distortion simultaneously, until tube-shaped parison leaves lower linear path completely, enter circular arc passage and upper linear path, stop advancing, complete the second passage processing.
7. two-way continuous confined strip shearing method according to claim 6, is characterized in that, also comprise the steps:
-repeat step S2 ~ step S3, realize the two-way continuous confined strip shearing of multi-pass.
8. two-way continuous confined strip shearing method according to claim 6, is characterized in that, in step S3 or step S4, also comprise the steps:
When tube-shaped parison is along with the upper or downward movement of upper annular extrusion drift and lower annular extrusion drift, continue through the die cavity of circular arc, along its cross-sectional direction generation continuous shear stress;
Through the variable cross-section annular extrusion cylinder of surface roughening process in twist motion time, under frictional force effect, drive the external diameter of tube-shaped parison to carry out circumferential movement with the first rotating speed, and the internal diameter of tube-shaped parison contacts with variable cross-section core bar, there is not or occur the circumferential movement of the second rotating speed, make tube-shaped parison, along pipe thickness direction, continuous shear stress occur;
Described second rotating speed is less than described first rotating speed.
9. two-way continuous confined strip shearing method according to claim 6, is characterized in that, add man-hour when tubing to be processed is not suitable for maybe carrying out normal temperature, tube-shaped parison and two-way continuous confined strip shearing device can carry out In Situ Heating by heating jacket.
10. the purposes of the two-way continuous confined strip shearing device described in an any one of claim 1 to 5 in the Ultra-fine Grained tubular material preparation of simple metal, alloy, intermetallic compound, composite, macromolecular material or semi-conducting material.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169036A (en) * | 2017-11-27 | 2018-06-15 | 西北工业大学 | A kind of mechanical sheet metal Bidirectional shearing device |
| CN109127754A (en) * | 2018-08-29 | 2019-01-04 | 重庆大学 | A kind of preparation method of ultra-fine grained magnesium alloy extruded bars |
| CN109365560A (en) * | 2018-11-14 | 2019-02-22 | 江苏科技大学 | A kind of rotation backward extrusion apparatus and method preparing Ultra-fine Grained cup shell |
| CN110153211A (en) * | 2019-05-28 | 2019-08-23 | 西北工业大学 | The preparation facilities and manufacturing process of a kind of Ultra-fine Grained, nanocrystalline blank |
| CN111889528A (en) * | 2019-05-05 | 2020-11-06 | 上海交通大学 | Secondary torsion extrusion device and method for variable cross-section cavity of refined crystal grains |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100132430A1 (en) * | 2008-12-03 | 2010-06-03 | Ping-Hsun Tsai | Extrusion die device |
| CN101966536A (en) * | 2010-09-22 | 2011-02-09 | 上海交通大学 | Torsion type reciprocating extrusion device and process method thereof |
| JP4788874B2 (en) * | 2005-04-14 | 2011-10-05 | 独立行政法人物質・材料研究機構 | Strong processing method for metal materials and molds used for strong processing method |
| CN104307908A (en) * | 2014-10-09 | 2015-01-28 | 太原理工大学 | Equal channel forming die for thick-wall pipe and method of forming die for forming pipe |
| CN104475475A (en) * | 2014-11-28 | 2015-04-01 | 太原理工大学 | Twist extrusion forming die and twist extrusion forming method |
-
2015
- 2015-12-11 CN CN201510924529.7A patent/CN105436228B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4788874B2 (en) * | 2005-04-14 | 2011-10-05 | 独立行政法人物質・材料研究機構 | Strong processing method for metal materials and molds used for strong processing method |
| US20100132430A1 (en) * | 2008-12-03 | 2010-06-03 | Ping-Hsun Tsai | Extrusion die device |
| CN101966536A (en) * | 2010-09-22 | 2011-02-09 | 上海交通大学 | Torsion type reciprocating extrusion device and process method thereof |
| CN104307908A (en) * | 2014-10-09 | 2015-01-28 | 太原理工大学 | Equal channel forming die for thick-wall pipe and method of forming die for forming pipe |
| CN104475475A (en) * | 2014-11-28 | 2015-04-01 | 太原理工大学 | Twist extrusion forming die and twist extrusion forming method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169036A (en) * | 2017-11-27 | 2018-06-15 | 西北工业大学 | A kind of mechanical sheet metal Bidirectional shearing device |
| CN108169036B (en) * | 2017-11-27 | 2020-12-08 | 西北工业大学 | Mechanical type sheet metal bidirectional shearing device |
| CN109127754A (en) * | 2018-08-29 | 2019-01-04 | 重庆大学 | A kind of preparation method of ultra-fine grained magnesium alloy extruded bars |
| CN109365560A (en) * | 2018-11-14 | 2019-02-22 | 江苏科技大学 | A kind of rotation backward extrusion apparatus and method preparing Ultra-fine Grained cup shell |
| CN111889528A (en) * | 2019-05-05 | 2020-11-06 | 上海交通大学 | Secondary torsion extrusion device and method for variable cross-section cavity of refined crystal grains |
| CN110153211A (en) * | 2019-05-28 | 2019-08-23 | 西北工业大学 | The preparation facilities and manufacturing process of a kind of Ultra-fine Grained, nanocrystalline blank |
| CN110153211B (en) * | 2019-05-28 | 2020-10-27 | 西北工业大学 | Preparation device and forming method of ultrafine-grained and nanocrystalline blank |
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| CN105436228B (en) | 2017-07-11 |
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