CN2850740Y - Iso-radius angular pressing mould - Google Patents
Iso-radius angular pressing mould Download PDFInfo
- Publication number
- CN2850740Y CN2850740Y CN 200520125283 CN200520125283U CN2850740Y CN 2850740 Y CN2850740 Y CN 2850740Y CN 200520125283 CN200520125283 CN 200520125283 CN 200520125283 U CN200520125283 U CN 200520125283U CN 2850740 Y CN2850740 Y CN 2850740Y
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- China
- Prior art keywords
- protection piece
- depression bar
- mould
- compression bar
- protective
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Abstract
The utility model belongs to the material preparation field and relates to an isodiametric angular mould used for preparing hyperfine grain material blocks by extrusion. The mould comprises an isodiametric angular concave mould and a compression bar, wherein the concave mould is composed of an inlet channel and an outlet channel which are isodiametric. The utility model is characterized in that the external side of the compression bar is provided with a compression bar protective device formed by assembling protective layers, and each protective layer is composed of a protecting block A, a protecting block B and a clamping device. The entire height of the protective layers can be adjusted according to the length of the material to be extruded, and can be disassembled one by one in the extrusion process, and the compression bar is under the protection of the protective device all the time. The mould solves the problem of the instability of a high-flexibility compression bar, is capable of preparing metal rods with a large length-diameter ratio, and the grains of the material can be refined from the original a plurality of micrometers to 200 to 400 nanometers, and the mechanical property is conspicuously improved.
Description
Technical field
The utility model belongs to field of material preparation, and particularly a kind of Equal Channel Angular Pressing legal system is equipped with the mould of block body ultrafine grain material.
Background technology
At present, normal temperature or lower temperature prepare in the method for block body ultrafine grain material down, and the Equal Channel Angular Pressing method is common a kind of.Common Equal Channel Angular Pressing mould (Bi Jianqiang, metal forming technology, 2003, vol.21, No.3,20 pages) by inlet, the passage of two equal diameters of outlet is formed, two passages are connected by corner, and bar-shaped metal materials is put into from access road, enter outlet through corner under the extruding of depression bar, at this moment, material is subjected to approximate pure shear effect and makes inner grain refinement, does not change substantially because material cross-section is long-pending in the extrusion process, therefore can be through the repeated multiple times extruding, the crystal grain of final material can refine to 200 to 400 nanometers from initial tens microns, obtains super fine crystal material.But the depression bar of this type of mould the time will bear very large load in work, and unstability and cause destroying easily is particularly evident when the bigger material of extruded length diameter ratio, so the length of material of Equal Channel Angular Pressing is restricted, and can't realize commercial application.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of novel Equal Channel Angular Pressing mould that has the depression bar protective device is provided.
The utility model is realized in the following manner:
A kind of Equal Channel Angular Pressing mould, comprise isometrical angle die, depression bar, die is made up of the access road and the exit passageway of equal diameters, access road and exit passageway angle are 90～120 °, it is characterized in that the depression bar protective device that combines by protective layer in the depression bar arranged outside, each protective layer is made up of protection piece A, protection piece B, clamping device three parts, and the quantity of protective layer guarantees that the height of protective device equates with length of material to be extruded, a little less than depression bar length; Protection piece A and protection piece B respectively have a semicircle orifice on the assembling contact-making surface, after protection piece A and protection piece B placed along mirror image assembling contact-making surface, two semicircle orifices formed circular hole, and circular hole and depression bar are slip cooperating relationship; There is projection at protection piece A and protection piece B two ends, and clamping device is the metal derby that has groove, and the width of groove equals to protect the overall width of piece A and protection piece B projection, and clamping device is held on protection piece two ends projection.Above-mentioned Equal Channel Angular Pressing mould is characterized in that protecting piece A to become the minute surface symmetric relation with protection piece B along the assembling contact-making surface.
The utility model is in depression bar extrusion process; depression bar is under the constraint of the protective device that a plurality of protective layers form all the time; reduced the excessive unstable failure that causes of flexibility to a great extent; and the quantity of protective layer and the length of depression bar can be regulated according to the size needs of preparation sample; therefore make a whole set of mould can be used for preparing the super fine crystal material of big length diameter ratio, and be expected to aspect industrialization, use.
Description of drawings
Fig. 1 is that integral shaft of the present utility model is to schematic cross-section.
Fig. 2 is a protective layer structure assembling schematic diagram of the present utility model.
Among the figure: 1 for protection piece A, 2 for protection piece B, 3 be clamping device, 4 for protective layer (forming) by 1,2,3,5 for depression bar, 6 for material to be extruded, 7 for isometrical angle die, 8 be that access road, 9 is an exit passageway.
The specific embodiment
Provide a most preferred embodiment of the present utility model below in conjunction with accompanying drawing:
Material to be extruded (6) is put into the access road (8) of isometrical angle die (7); To protect piece A (1) and protect piece B (2) semicircle orifice separately along the relative circular hole passage of forming of mirror symmetry planes, after combination is finished, the projection at two ends is respectively charged in the groove of clamping device (3), and making protection piece A (1), a protection piece B (2) is a protective layer (4) with two clamping devices (3) common combination; Four protective layers (4) centre bore axis overlapped stack, and with access road (9) dead in line, be positioned over isometrical angle die (7) and go up as the depression bar protective device; The equal in length of the total height of depression bar protective device and material to be extruded (6) is shorter than the about 20mm of depression bar (5) length; The centre bore that after assembling finishes depression bar (5) is passed 4 protective layers (4) is deep in the access road (8), and contacts with material to be extruded (6).
Depression bar (5) is treated extrded material (6) and is pushed under the pressure that forcing press provides; whenever depression bar (5) moves downward will touch depression bar protective device upper surface the time; suspend its motion; topmost the clamping device (3) at a protective layer (4) two ends is removed; to protect piece A (1) and protection piece B (2) to remove again respectively; depression bar (5) continues extruding subsequently; repeat said process; got into exit passageway (9) with access road (8) equal diameters from the access road (8) of isometrical angle die (7) fully up to material to be extruded (6), so far finished equal channel angular pressing one time.Carry out above-mentioned equal channel angular pressing repeatedly 4 to 8 times, can realize treating the ultra-fine crystallization of extrded material (6).
As seen; in depression bar extrusion process; depression bar (5) is under the constraint of the protective device that a plurality of protective layers (4) form all the time; reduced the excessive unstable failure that causes of flexibility to a great extent; and the length of the quantity of protective layer (4) and depression bar (5) can be regulated according to the size needs of preparation sample; thereby therefore can push and realize ultra-fine crystallization, and be expected to aspect industrialization, use the bigger material of length diameter ratio.
Claims (2)
1. Equal Channel Angular Pressing mould, comprise isometrical angle die (7), depression bar (5), isometrical angle die (7) is made up of the access road (8) and the exit passageway (9) of equal diameters, access road (8) and exit passageway (9) angle are 90～120 °, it is characterized in that the depression bar protective device that combines by protective layer (4) in depression bar (5) arranged outside, each protective layer (4) is by protection piece A (1), protection piece B (2), clamping device (3) three parts are formed, the quantity of protective layer (4) guarantees the height and material to be extruded (6) equal in length of protective device, a little less than depression bar (5) length; Protection piece A (1) and protection piece B (2) respectively have a semicircle orifice on the assembling contact-making surface, after protection piece A (1) and protection piece B (2) placed along mirror image assembling contact-making surface, two semicircle orifices formed circular hole, and circular hole and depression bar are slip cooperating relationship; There is projection at protection piece A (1) and protection piece B (2) two ends, and clamping device is the metal derby that has groove, and the width of groove equals to protect the overall width of piece A (1) and protection piece B (2) projection, and clamping device (3) is held on protection piece two ends projection.
2. Equal Channel Angular Pressing mould according to claim 1 is characterized in that: protection piece A (1) becomes the minute surface symmetric relation with protection piece B (2) along the assembling contact-making surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125283 CN2850740Y (en) | 2005-12-14 | 2005-12-14 | Iso-radius angular pressing mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125283 CN2850740Y (en) | 2005-12-14 | 2005-12-14 | Iso-radius angular pressing mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2850740Y true CN2850740Y (en) | 2006-12-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520125283 Expired - Fee Related CN2850740Y (en) | 2005-12-14 | 2005-12-14 | Iso-radius angular pressing mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2850740Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797596A (en) * | 2010-03-30 | 2010-08-11 | 中国航空工业集团公司北京航空材料研究院 | Convex and concave die cavity mating structure of equal channel angular extrusion device |
| CN101570070B (en) * | 2008-04-30 | 2012-03-28 | 西北工业大学 | Self-guided equal channel extruding device and extruding method |
| CN103639223A (en) * | 2013-11-27 | 2014-03-19 | 山东建筑大学 | Continuous equal circular channel warm extrusion method and die with prestressed structure |
| CN104390864A (en) * | 2014-11-19 | 2015-03-04 | 浙江海洋学院 | Horizontal type full-automatic equal channel angular extrusion experiment device |
| CN107413870A (en) * | 2017-08-21 | 2017-12-01 | 太原理工大学 | One kind simulation magnesium alloy equal channel angular pressing technology optimization method |
-
2005
- 2005-12-14 CN CN 200520125283 patent/CN2850740Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570070B (en) * | 2008-04-30 | 2012-03-28 | 西北工业大学 | Self-guided equal channel extruding device and extruding method |
| CN101797596A (en) * | 2010-03-30 | 2010-08-11 | 中国航空工业集团公司北京航空材料研究院 | Convex and concave die cavity mating structure of equal channel angular extrusion device |
| CN101797596B (en) * | 2010-03-30 | 2011-12-21 | 中国航空工业集团公司北京航空材料研究院 | Convex and concave die cavity mating structure of equal channel angular extrusion device |
| CN103639223A (en) * | 2013-11-27 | 2014-03-19 | 山东建筑大学 | Continuous equal circular channel warm extrusion method and die with prestressed structure |
| CN104390864A (en) * | 2014-11-19 | 2015-03-04 | 浙江海洋学院 | Horizontal type full-automatic equal channel angular extrusion experiment device |
| CN107413870A (en) * | 2017-08-21 | 2017-12-01 | 太原理工大学 | One kind simulation magnesium alloy equal channel angular pressing technology optimization method |
| CN107413870B (en) * | 2017-08-21 | 2019-03-26 | 太原理工大学 | A kind of simulation magnesium alloy equal channel angular pressing technology optimization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Junmei Document name: Notification of Termination of Patent Right |
|
| 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 |