CN2757953Y - C shaped uniform channel reciprocating extrusion mould for preparing ultrafine crystal material - Google Patents
C shaped uniform channel reciprocating extrusion mould for preparing ultrafine crystal material Download PDFInfo
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- CN2757953Y CN2757953Y CN 200420114966 CN200420114966U CN2757953Y CN 2757953 Y CN2757953 Y CN 2757953Y CN 200420114966 CN200420114966 CN 200420114966 CN 200420114966 U CN200420114966 U CN 200420114966U CN 2757953 Y CN2757953 Y CN 2757953Y
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Abstract
The C shape equivalency channel reciprocating extrusion mould for preparing superfine crystal material belongs to materials processing field. The utility model comprises an upper punch, a lower punch, a handle, a bolt, a concave mould, and a C shape equivalency channel extrusion shape chamber. The concave mould is symmetrically divided into two halves from center line, and the two halves are respectively provided with a half C shape equivalency channel extrusion mould chamber, and the C-shaped equivalency channel extrusion shape chamber is formed depending on the evenly distributed bolts The upper mould chamber, the lower mould chamber and the C shapemould chamber are arranged in the concave mould along the fractal face. The upper mould chamber connects with the lower mould chamber by the C shape mould chamber, and the position of the upper and lower mould chamber is respectively provided with the upper punch and the lower punch, and the concave mould is provided with the handle. The utility model is provided with simple structure, strong grain refinement ability and realizing the continuous manufacture.
Description
Technical field
The utility model relates to a kind of mould, especially a kind of C shape equal channel reciprocating extrusion die for preparing super fine crystal material belongs to material processing field.
Background technology
Be subjected to the traction of pillar industry in national economy demands such as Aero-Space, communications and transportation, residential housing, mechano-electronic, information industry and defence and military, demand to high specific strength, the contour performance structural material of high specific stiffness increases day by day, and the development super fine crystal material is exploitation and one of important method for preparing high specific strength, the contour performance structural material of high specific stiffness.Large plastometric set technology (being called for short SPD), has strong grain refining capability, can be directly the interior tissue of material be refine to sub-micron and even nanoscale, being known as by international material educational circles is the most promising method of preparation block nanometer and super fine crystal material.Recent years, the large plastometric set technology has obtained swift and violent development, mainly contains: equal channel angular extruding, high pressure torsion, reciprocating extrusion etc.Wherein, equal channel angular extruding and high pressure torsion are the swiftest and the most violent owing to its good grain refining efficiency develops, but high pressure torsion is owing to little application of preparation material volume is restricted, and also each exists significantly not enough other technologies.
Find through literature search prior art, people such as Y.Iwahashi are in " Scripta Material " (material Leader, 1996, in " the principle of equal-channel angularpressing for the processing of ultra-fine grained materials " that delivers 35:143-146) (the equal channel angular extrusion principle of the preparation super fine crystal material) literary composition, introduced the principle of equal channel angular extruding preparation super fine crystal material, the passage that has two cross sections to equate in the extrusion die, two passages are with certain angle of intersection, during extruding, material through the corner of two passages, produces the local big plastic deformation of shearing under the effect of drift.Adopt this technology to have following characteristics: 1. can prepare the large volume material; 2. material does not change at extruding front and back shape of cross section and area, thus repeatedly push the dependent variable accumulation superposition that can make each time distortion repeatedly, thus obtain sizable overall strain amount; 3. grain refining efficiency is strong, is about 100nm～200nm through the material grains size of this processes, still, the shortcoming of this technology maximum be can not realize continuously extruded, so production efficiency is low, also rare now commercial Application.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and a kind of C shape equal channel reciprocating extrusion die for preparing super fine crystal material is provided, and makes it have strong, easy to operate, simple in structure, the advantage that can be continuously extruded of grain refining capability.
The utility model is achieved through the following technical solutions, and the utility model comprises: passages such as upper punch, low punch, handle, bolt, die, C shape extruding die cavity.Die is from center line symmetry dimidiation, and two halves are respectively equipped with passage extrusion die cavities such as half C shape, relies on equally distributed bolt combination to become passage extruding die cavities such as C shape.In die, be provided with upper cavity, lower mode cavity and C shape die cavity along fractal area, upper and lower die cavity sectional area equates, shape is the same, center line point-blank, be shaped as square or circular, link to each other with C shape die cavity between the upper and lower die cavity, C shape die cavity equates with upper and lower die cavity sectional area, shape is the same, adopt smooth arc transition and upper and lower die cavity to constitute passage extruding die cavities such as C shape together, being provided with a hydraulic type drift respectively at upper and lower die cavity place is upper punch, low punch.Die is provided with handle.
The utility model adopts metal to make metal mold C shape equal channel reciprocating extrusion die, and handle moving of mould for convenience designs, and die is preheated to before extruding and requires temperature.Technological core of the present utility model is passage extruding die cavities such as C shape.In extrusion process, material enters C shape die cavity along upper cavity under the effect of upper punch, the shearing plastic deformation of gradual change takes place, continue extruding downwards, material enters lower mode cavity from C shape die cavity, and detrusion takes place equally, revert to original shape, material after the extruding oppositely pushes back under the low punch effect of lower mode cavity, finishes an actuation cycle.Repeat above process, till obtaining desired strain, at this moment remove upper punch or low punch, just can be with the material extrusion molding.Say going on that this process can be unlimited in principle, thereby obtain infinitely-great strain, obtain tiny and uniform equi-axed crystal.
The utlity model has notable effect of crystal grain thinning, metal type dies is simple in structure, handling ease, practical wide, can prepare simple metal, alloy, steel, intermetallic compound, ceramic matric composite, metal-base composites, macromolecular material, super fine crystal materials such as semiconductor, also can prepare difficult deformable metal, as magnesium alloy etc., just need to improve the heating-up temperature of this die or adopt bigger arc radius at C shape die cavity place, realized the perfect adaptation of reciprocating extrusion technology and equal channel angular extrusion technique, realize continuous extruding, the production efficiency height.
Description of drawings
Fig. 1 the utility model structural representation
Fig. 2 is an A-A profile shown in Figure 1
The specific embodiment
As depicted in figs. 1 and 2, the utility model comprises: passages such as upper punch 1, handle 2, low punch 3, bolt 4, die 5, C shape extruding die cavity 6.Its annexation is: die 5 is from center line symmetry dimidiation, two halves are respectively equipped with passage extruding die cavities such as half C shape, rely on equally distributed bolt 4 to be combined into passage extruding die cavities 6 such as C shape, in die 5, be provided with upper cavity 7, lower mode cavity 8 and C shape die cavity 9 along fractal area, link to each other with C shape die cavity 9 between the upper and lower die cavity 7,8, being provided with a hydraulic type drift respectively at upper and lower die cavity 7,8 places is upper punch 1, low punch 3.Die 5 is provided with handle 2.
Upper and lower die cavity 7,8 sectional areas equate, shape is the same, center line point-blank, be shaped as square or circular, between upper and lower die cavity 7,8, link to each other with C shape die cavity 9, C shape die cavity 9 equates with upper and lower die cavity 7,8 sectional areas, shape is the same, adopt smooth arc transition and upper and lower die cavity 7,8 to constitute passage extruding die cavities such as C shape together.
Claims (3)
1, a kind of C shape equal channel reciprocating extrusion die for preparing super fine crystal material, comprise: upper punch (1), handle (2), low punch (3), bolt (4), die (5), it is characterized in that, also comprise: passages such as C shape extruding die cavity (6), its annexation is: die (5) is from center line symmetry dimidiation, two halves are respectively equipped with passage extruding die cavities such as half C shape, rely on bolt (4) to be combined into passage extruding die cavities (6) such as C shape, in die (5), be provided with upper cavity (7) along fractal area, lower mode cavity (8) and C shape die cavity (9), on, lower mode cavity (7,8) link to each other with C shape die cavity (9) between, last, lower mode cavity (7,8) locate to be provided with respectively upper punch (1), low punch (3), die (5) is provided with handle (2).
2, the C shape equal channel reciprocating extrusion die of preparation super fine crystal material according to claim 1, its feature also is, upper and lower die cavity (7,8) sectional area equates, shape is the same, center line point-blank, be shaped as square or circular, between upper and lower die cavity (7,8), link to each other with C shape die cavity (9), C shape die cavity (9) equates with upper and lower die cavity (7,8) sectional area, shape is the same, adopt smooth arc transition and upper and lower die cavity (7,8) to constitute passage extruding die cavities such as C shape together.
3, the C shape equal channel reciprocating extrusion die of preparation super fine crystal material according to claim 1 is characterized in that, upper punch (1), low punch (3) are the hydraulic type drift, and bolt (4) evenly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114966 CN2757953Y (en) | 2004-12-29 | 2004-12-29 | C shaped uniform channel reciprocating extrusion mould for preparing ultrafine crystal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114966 CN2757953Y (en) | 2004-12-29 | 2004-12-29 | C shaped uniform channel reciprocating extrusion mould for preparing ultrafine crystal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757953Y true CN2757953Y (en) | 2006-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420114966 Expired - Fee Related CN2757953Y (en) | 2004-12-29 | 2004-12-29 | C shaped uniform channel reciprocating extrusion mould for preparing ultrafine crystal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757953Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856678A (en) * | 2010-06-29 | 2010-10-13 | 中南大学 | Device capable of realizing accurate control of equal-channel angular extrusion processing route |
| CN104001748A (en) * | 2014-05-27 | 2014-08-27 | 西北工业大学 | Isometric-passage extrusion die |
| CN106493372A (en) * | 2016-11-24 | 2017-03-15 | 上海电机学院 | The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium |
| CN106513690A (en) * | 2016-11-24 | 2017-03-22 | 上海电机学院 | Ball milling-isometric angle extrusion-annealing method for pure titanium waste chip circular curing |
| CN106552944A (en) * | 2016-11-15 | 2017-04-05 | 上海电机学院 | Many corner extrusion curings of titanium chip circular treatment |
| CN109290384A (en) * | 2018-09-06 | 2019-02-01 | 湖北工业大学 | A kind of plate severe plastic deformation extrusion die |
| CN110508635A (en) * | 2019-08-27 | 2019-11-29 | 太原理工大学 | A kind of asymmetric reciprocating extrusion device and processing method with separate type punch-pin |
| CN112620371A (en) * | 2020-12-23 | 2021-04-09 | 太原理工大学 | Device and method for preparing fine-grain magnesium alloy through reciprocating torsion, extrusion and deformation |
-
2004
- 2004-12-29 CN CN 200420114966 patent/CN2757953Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856678A (en) * | 2010-06-29 | 2010-10-13 | 中南大学 | Device capable of realizing accurate control of equal-channel angular extrusion processing route |
| CN104001748A (en) * | 2014-05-27 | 2014-08-27 | 西北工业大学 | Isometric-passage extrusion die |
| CN104001748B (en) * | 2014-05-27 | 2016-01-06 | 西北工业大学 | A kind of Equal-channel Angular Pressing mould |
| CN106552944A (en) * | 2016-11-15 | 2017-04-05 | 上海电机学院 | Many corner extrusion curings of titanium chip circular treatment |
| CN106493372A (en) * | 2016-11-24 | 2017-03-15 | 上海电机学院 | The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium |
| CN106513690A (en) * | 2016-11-24 | 2017-03-22 | 上海电机学院 | Ball milling-isometric angle extrusion-annealing method for pure titanium waste chip circular curing |
| CN109290384A (en) * | 2018-09-06 | 2019-02-01 | 湖北工业大学 | A kind of plate severe plastic deformation extrusion die |
| CN110508635A (en) * | 2019-08-27 | 2019-11-29 | 太原理工大学 | A kind of asymmetric reciprocating extrusion device and processing method with separate type punch-pin |
| CN112620371A (en) * | 2020-12-23 | 2021-04-09 | 太原理工大学 | Device and method for preparing fine-grain magnesium alloy through reciprocating torsion, extrusion and deformation |
| CN112620371B (en) * | 2020-12-23 | 2022-05-24 | 太原理工大学 | Device and method for preparing fine-grain magnesium alloy through reciprocating torsional extrusion deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI MEIGELI LIGHT ALLOY CO., LTD. Free format text: FORMER OWNER: SHANGHAI JIAOTONG UNIV. Effective date: 20090605 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090605 Address after: Nine Jing Road Shanghai Songjiang high tech Park No. 1501, zip code: 201615 Patentee after: Light-alloy Co., Ltd. of American Gree of Shanghai Address before: No. 800, Dongchuan Road, Shanghai, Minhang District: 200240 Patentee before: Shanghai Jiao Tong University |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |