CN103643189A - Hot-extrusion method for preparing tungsten alloy nano material by using channel mould cavity in cross shape or the like - Google Patents
Hot-extrusion method for preparing tungsten alloy nano material by using channel mould cavity in cross shape or the like Download PDFInfo
- Publication number
- CN103643189A CN103643189A CN201310607246.0A CN201310607246A CN103643189A CN 103643189 A CN103643189 A CN 103643189A CN 201310607246 A CN201310607246 A CN 201310607246A CN 103643189 A CN103643189 A CN 103643189A
- Authority
- CN
- China
- Prior art keywords
- cruciform
- tungstenalloy
- mould
- passage
- tungsten alloy
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a hot-extrusion method for preparing a tungsten alloy nano material by using a channel mould cavity in a cross shape or the like. The method is characterized in that: big plastic deformation is performed on a tungsten alloy which is hard to deform, a cross shaped mould is driven to rotate continuously at the same time so as to achieve the repeated plastic deformation of the tungsten alloy, meanwhile the rotation direction of the cross shaped mould can be changed so as to achieve the uniform deformation of the severe plastic deformation of the tungsten alloy, and finally the method obtains equiaxial grains which have the advantages of large deformation cumulant, uniform crystal grain size, and large grain boundary angle of refined nano crystal particles; thus the mechanical property of a block nano tungsten alloy is further improved, and the alloy has high strength and good toughness on the basis of high intensity.
Description
Technical field
The present invention relates to a kind of novel method and mould of preparing bulk tungstenalloy nano material, especially relate to a kind of die for continuously extruding that waits passage bent angle technique of cruciform mold cavity passage.
Background technology
Tungsten is a kind of Steel Grey or silvery white metallic element, and hardness is high, and fusing point is high, and main application is for manufacturing filament and high speed cutting steel alloy, superhard mould.Tungstenalloy is that a class be take tungsten as base (massfraction of tungsten is generally 80%-97%), and is added with the alloy that Ni, F, Mn, Co, Cu, Mo, Cr equal element, and its density is up to 16.5～19.0g/ ㎝ 3.Tungsten metal is commonly used for the military uses such as armour-piercing simultaneously.Tungsten metal is at military armour piercing shot bullet core, rocket nozzle, armour piercing shot contact, heating element and thermoscreen etc. at present.Also on seating plane and vertisplane, use or try out, being mainly used in fuselage ring, wing flap rib, fixed fin, nose cone, inlet lip, hatch door, fuel tank etc.Along with the continuous progress of the armour materials such as tank, the intensity of the tungstenalloy as anti-tank weapon material is had higher requirement.
The working hardenings such as traditional rolling, rotary swaging, torsional deformation, hydrostatic extrusion are the effective ways that improve tungsten alloy material intensity and guarantee certain toughness, but also effective crystal grain thinning.But it is streamlined that the texture of the material obtaining by aforesaid method has, the crystal grain after refinement has directivity, and is low-angle boundary.Because tungstenalloy is difficult-to-deformation material, the plasticity that therefore obtains material is poor, therefore, must seek new technology and processing method, further improve its performance, make every effort to make the mechanical property of tungstenalloy to be further enhanced, guarantee to have concurrently under highdensity prerequisite high intensity and good toughness.
Adopt the hot-extrusion method such as bent angle such as passage such as grade of a kind of cruciform mold cavity of the present invention, can carry out large viscous deformation to the tungstenalloy of difficulty distortion, simultaneously by continuous rotary cross shape mould, can realize the viscous deformation repeatedly of tungsten alloy material, simultaneously by changing the direction of rotary cross shape mould, can realize the distortion degree of uniformity of tungstenalloy severe plastic deformation, final acquisition distortion semi-invariant is large, even grain size, the large equi-axed crystal of nanocrystal crystal boundary angle after refinement, the mechanical property of block nanometer tungstenalloy is further enhanced, guarantee to have concurrently under highdensity prerequisite high intensity and good toughness.
Summary of the invention
The object of the invention is: for the technical problem of above-mentioned existence, provide a kind of and can carry out the axle nanometer such as crystal grain that large viscous deformation realizes tungsten alloy material to the tungstenalloy of difficulty distortion by continuous rotary cross shape mould, make block nanometer tungstenalloy have high density, have high intensity and good toughness simultaneously.This cruciform mould can be realized by rotary cross shape mould continuously extruded, can realize automatization prepared by nanometer tungsten based alloy material.
The technical scheme of patent of the present invention is: the present invention is that tungstenalloy nano material method is prepared in the passage mold cavity hot extrusions such as cruciform, comprises set-up procedure and the hot extrusion spinning-shaping process of blank, two corresponding stages.
The set-up procedure of blank mainly comprises cutting preparation, material softening annealing, bead blasted surfaces treatment process and the washing process of tungstenalloy extrusion billet; Hot extrusion process is the hot extrusion such as bent angle such as passage such as grade by cruciform mold cavity, tungstenalloy to difficulty distortion pushes, simultaneously by continuous rotary cross shape mould, can realize the viscous deformation repeatedly of tungsten alloy material, adopt the mould structure with compensation space simultaneously, by back pressure push rod, blank is applied to back pressure, can avoid blank head to produce rugged phenomenon.Cruciform mould is applied to prestress simultaneously, guarantee that extruding carries out smoothly, by improving cruciform die life.
Adopt this kind of scheme, by rotary cross shape mold hot extrusion forming method, can repeatedly push tungstenalloy blank, adopt back pressure push rod can guarantee tungstenalloy extrusion not only cross-sectional dimension is constant simultaneously, and extrusion geometrical shape can not change yet simultaneously.This novel process can realize the nanometer isometry of tungsten alloy material tissue.
As a modification of the present invention, blank outlet adopts back pressure push rod, on extrusion machine or hydropress, by cruciform mould, repeatedly selects extrusion molding, the final bulk tungsten alloy material with nanometer equiaxed structure that obtains.
Adopt this kind of scheme, be not only conducive to guarantee geometrical dimension and the form accuracy of tungstenalloy nano material, prestress gripping unit can provide the work-ing life of mould simultaneously, and can realize automatization prepared by tungstenalloy nano material.
The invention has the beneficial effects as follows: equal channel angular pressing is severe plastic deformation process, and BC path is can be that extrusion obtains the comparatively path of uniform formation, the device that both are combined not only can be realized the severe plastic deformation of Al-Li alloy, also on former distortion basis, improve, realized the continuous modification in BC path, both realize the nanometer of block Al-Li alloy, alleviated again the labour intensity of handling workman, widened equal channel angular pressing distortion.
Accompanying drawing explanation
In conjunction with the accompanying drawings and embodiments specific embodiment of the invention scheme to be described in detail below.
Fig. 1 is the simple schematic diagram of complete processing of the present invention;
Fig. 2 is the passage bent angle hot extrusion schematic diagram such as cruciform mold cavity of the present invention
Fig. 3 is passage bent angle hot-extrusion mold such as grade and the auxiliary equipment figure of cruciform mold cavity of the present invention.
Being labeled as in above-mentioned figure:
Fig. 2 is 1. punch of the passage bent angle hot extrusion schematic diagram such as cruciform mold cavity of the present invention, 2. extrusion blank, 3. rotating cavity die, 4. prestress clamp, 5. push rod, 6. back pressure push rod, 7. prestress clamp base.
Fig. 3 is 1. rotary screws that wait passage bent angle hot-extrusion mold and auxiliary equipment figure of cruciform mold cavity of the present invention, 2. fixing prestress clamping plate, 3. back pressure push rod, 4. rotating cavity die, 5. extrusion blank, 6. top plate, 7. convex mould pad, 8. punch retainer, 9 punch, 10. square nut, 11. set screws.
Embodiment
Fig. 1 is that complete processing of the present invention is simply illustrated, 1. first carries out the cutting preparation of tungstenalloy extrusion billet; 2. material softening annealing, bead blasted surfaces treatment process and washing process; 3. hot extrusion process is the hot extrusion such as bent angle such as passage such as grade by cruciform mold cavity, tungstenalloy to difficulty distortion carries out hot extrusion, simultaneously by continuous rotary cross shape mould, can realize the viscous deformation repeatedly of tungsten alloy material, in extrusion process, making is with lubricator the mixture of molybdenumdisulphide and paraffin, and blending ratio is 2:1.
Fig. 2 is the passage bent angle hot extrusion schematic diagram such as cruciform mold cavity of the present invention: 1. original state: the tungstenalloy blank of handling well is put into cruciform mold cavity; 2. extruding once: punch is descending, when punch and blank contact squeeze start, by cruciform passage, wait the hot extrusion of passage bent angle, return when back-pressure bar is up with punch after horizontal mold passage die cavity is implemented back pressure to blank simultaneously, punch completes a stroke, punch is up, and cruciform mould turns clockwise simultaneously; 3. after mould half-twist: can realize the viscous deformation for the second time of tungsten alloy material.
Fig. 3 is passage bent angle hot-extrusion mold such as grade and the auxiliary equipment of cruciform mold cavity of the present invention of the present invention: the tungstenalloy blank of handling well is put into cruciform mold cavity 1.; 2. punch is descending, when punch and blank contact squeeze start, by cruciform passage, waits the hot extrusion of passage bent angle, return when back-pressure bar is up with punch after horizontal mold passage die cavity is implemented back pressure to blank simultaneously; 3. punch completes a stroke, punch is up, and the cruciform mould that simultaneously turns clockwise, can realize the viscous deformation for the second time of tungsten alloy material, now punch completes second stroke, return when back-pressure bar is up with punch after horizontal mold passage die cavity is implemented back pressure to blank simultaneously; 4. punch completes second each and every one stroke, then punch is up, is rotated counterclockwise cruciform mould simultaneously, can realize the viscous deformation for the third time of tungsten alloy material, return when back-pressure bar is up with punch after horizontal mold passage die cavity is implemented back pressure to blank simultaneously; 5. punch completes the 3rd each and every one stroke, then punch is up, and the cruciform mould that simultaneously turns clockwise, can realize the 4th viscous deformation of tungsten alloy material, return when back-pressure bar is up with punch after horizontal mold passage die cavity is implemented back pressure to blank simultaneously; 6. finally take out tungstenalloy extrusion.
Equipment required for the present invention is mechanical presses machine or hydropress.
Die continuous passage structure of the present invention; all can adopt prior art; the present invention is not limited to above-mentioned cited concrete form of implementation, and all those skilled in the art, without the getable improvement of creative work, all belong in protection scope of the present invention.
Equipment required for the present invention is mechanical presses machine or hydropress.
Claims (3)
1. tungstenalloy nano material method is prepared in the passage mold cavity hot extrusion such as cruciform, can carry out large viscous deformation to the tungstenalloy of difficulty distortion, it is characterized in that: (a) by carrying out again follow-up passage extruding after the continuous rotary cross shape of cruciform axis mould 90-degree, can realize the viscous deformation repeatedly of tungsten alloy material, final accumulation gross distortion, obtains nanometer tungsten based alloy material; (b) in every time extrusion process, by changing the direction of cruciform mould rotation, can realize the homogeneous deformation of tungstenalloy severe plastic deformation, even grain size, after can obtaining refinement, wait axle nanocrystal material, the mechanical property of block nanometer tungstenalloy is further enhanced, guarantees to have concurrently under highdensity prerequisite high intensity and good toughness; (c) this mould adopts screw rod to clamp prestressed structure and can increase substantially cruciform mould strength, improves the work-ing life of mould.
2. tungstenalloy nano material method is prepared in the passage mold cavity hot extrusion such as cruciform according to claim 1, it is characterized in that: cruciform mould is extruded passage and installed with the push rod that can apply back pressure, can avoid blank head to produce rugged phenomenon, three-dimensional compressive stress can guarantee the compactness of material simultaneously.
3. tungstenalloy nano material method is prepared in the passage mold cavity hot extrusion such as cruciform according to claim 1, it is characterized in that: the total passage everywhere of cruciform mold cavity, in extrusion process, except clamp-oning and extrude two passes, other two places passage adopts common push rod seal channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310607246.0A CN103643189B (en) | 2013-11-27 | 2013-11-27 | Tungsten alloy nano material method is prepared in the channel die die cavity hot extrusions such as cruciform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310607246.0A CN103643189B (en) | 2013-11-27 | 2013-11-27 | Tungsten alloy nano material method is prepared in the channel die die cavity hot extrusions such as cruciform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103643189A true CN103643189A (en) | 2014-03-19 |
| CN103643189B CN103643189B (en) | 2015-09-30 |
Family
ID=50248468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310607246.0A Active CN103643189B (en) | 2013-11-27 | 2013-11-27 | Tungsten alloy nano material method is prepared in the channel die die cavity hot extrusions such as cruciform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103643189B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154800A (en) * | 2015-08-25 | 2015-12-16 | 山东建筑大学 | Method for preparing titanium alloy nano materials through warm extrusion of herringbone channel mold |
| CN105344730A (en) * | 2015-09-26 | 2016-02-24 | 山东建筑大学 | Method for preparing nano copper wire through cold drawing in fylfot equal-channel mold cavity |
| CN106040767A (en) * | 2016-06-29 | 2016-10-26 | 山东建筑大学 | Warm extrusion forming process and mold for high-strength tripod universal joint |
| CN106734303A (en) * | 2016-12-02 | 2017-05-31 | 中铁建电气化局集团康远新材料有限公司 | Double right angle channel continuous extrusion devices |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209379B1 (en) * | 1999-04-09 | 2001-04-03 | Agency Of Industrial Science And Technology | Large deformation apparatus, the deformation method and the deformed metallic materials |
| JP2005105385A (en) * | 2003-10-01 | 2005-04-21 | National Institute Of Advanced Industrial & Technology | Fine structure titanium and its production method |
| CN201648497U (en) * | 2010-02-10 | 2010-11-24 | 江苏科技大学 | Crossed isometric angle extruding mold for preparing superfine crystal materials |
| CN102337487A (en) * | 2011-09-17 | 2012-02-01 | 中国科学院等离子体物理研究所 | Fusion reactor tungsten-based material for plasma based on deep plastic deformation process |
-
2013
- 2013-11-27 CN CN201310607246.0A patent/CN103643189B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209379B1 (en) * | 1999-04-09 | 2001-04-03 | Agency Of Industrial Science And Technology | Large deformation apparatus, the deformation method and the deformed metallic materials |
| JP2005105385A (en) * | 2003-10-01 | 2005-04-21 | National Institute Of Advanced Industrial & Technology | Fine structure titanium and its production method |
| CN201648497U (en) * | 2010-02-10 | 2010-11-24 | 江苏科技大学 | Crossed isometric angle extruding mold for preparing superfine crystal materials |
| CN102337487A (en) * | 2011-09-17 | 2012-02-01 | 中国科学院等离子体物理研究所 | Fusion reactor tungsten-based material for plasma based on deep plastic deformation process |
Non-Patent Citations (2)
| Title |
|---|
| 李永志等: "基于材料改性的等径角挤压的塑性后处理工艺", 《塑性工程学报》 * |
| 谈军等: "超细晶钨及其复合材料的研究现状", 《粉末冶金工业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154800A (en) * | 2015-08-25 | 2015-12-16 | 山东建筑大学 | Method for preparing titanium alloy nano materials through warm extrusion of herringbone channel mold |
| CN105344730A (en) * | 2015-09-26 | 2016-02-24 | 山东建筑大学 | Method for preparing nano copper wire through cold drawing in fylfot equal-channel mold cavity |
| CN105344730B (en) * | 2015-09-26 | 2017-08-04 | 山东建筑大学 | The method that the passage die cavity cold drawings such as Swastika fonts prepare Nanometer Copper wire rod |
| CN106040767A (en) * | 2016-06-29 | 2016-10-26 | 山东建筑大学 | Warm extrusion forming process and mold for high-strength tripod universal joint |
| CN106734303A (en) * | 2016-12-02 | 2017-05-31 | 中铁建电气化局集团康远新材料有限公司 | Double right angle channel continuous extrusion devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103643189B (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105728493B (en) | A kind of combined type, which is turned round, squeezes the compound large plastometric set device of pier and manufacturing process | |
| CN105154800B (en) | Method for preparing titanium alloy nano materials through warm extrusion of herringbone channel mold | |
| CN108380802B (en) | A kind of circulation revolving die squeezes upsetting forming device and method | |
| CN102319757B (en) | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation | |
| CN103643189B (en) | Tungsten alloy nano material method is prepared in the channel die die cavity hot extrusions such as cruciform | |
| CN109047364B (en) | Circular extrusion die and method for preparing block ultrafine crystal material | |
| CN107893201B (en) | Reciprocal squeeze for preparing super fine crystal material turns round the isometrical angle manufacturing process of upsetting | |
| CN105499297A (en) | Extrusion die combining forward extrusion and equal-channel corner extrusion and extrusion machining method | |
| CN108637031A (en) | A kind of mold preparing high-performance magnesium-alloy tubing | |
| CN103894435A (en) | Reciprocated extruding device for preparing superfine grain magnesium alloy and processing method thereof | |
| CN104438415A (en) | Multi-directional composite multi-channel screw extrusion die for metal blank | |
| CN106623611A (en) | Combined forming method of deep double-cone and spherical-head type thin-wall part | |
| CN105921657B (en) | Prepare the two-way upsetting extrusion method of blanking type back pressure of refractory metal super fine crystal material | |
| CN103820744A (en) | Preparation method of ultrafine-grain titanium matrix composite material by using mushy-zone titanium alloy as matrix | |
| CN103624509A (en) | Large plastic deformation method for achieving titanium alloy low-temperature superplasticity | |
| CN103831588A (en) | Large-strain extruding and cutting preparation method for ultra-fine grain or nanocrystalline metallic material | |
| CN107309290A (en) | The big strain mould of integrated extruding and equal channel angular detrusion | |
| Raab | The innovation potential of ECAP techniques of severe plastic deformation | |
| CN102936707A (en) | Device and method for refining aluminum matrix composite material matrix organization | |
| CN205816441U (en) | The extrusion die of forward extrusion associating Equal-channel Angular Pressing | |
| CN106862863A (en) | A kind of preparation processing method of the ultra-thin titanium alloy shell of great diameter and long | |
| CN104874630B (en) | A kind of equal channel angular rotation extruding mold and method | |
| CN105951018B (en) | The method that the channel pressings such as three angles prepare Nano-mter Ti-alloy material | |
| CN104046863B (en) | The preparation method of big flakiness ratio ultra-high strength and toughness aluminum alloy plate materials | |
| CN103060730A (en) | Preparation method of aluminum alloy with excellent comprehensive property |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Shubo Inventor after: Zheng Erfeng Inventor after: Zheng Zuhui Inventor before: Xu Shubo Inventor before: Li Zhendong Inventor before: Ma Hailong Inventor before: Jing Cainian Inventor before: Ren Guocheng |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170606 Address after: 350300 Fujian city of Fuzhou province Fuqing Rong Photoelectric Technology Park Economic Development Zone (Fujian province nohon new Mstar Technology Ltd R & D center building three floor) Patentee after: Nuo Xi Technology Park, Fujian Province Development Co., Ltd Address before: School of materials Shandong Jianzhu University No. 1000, Licheng District Lingang Development Zone, 250101 Ji'nan Road, Shandong Province Patentee before: Shandong Construction University |
|
| TR01 | Transfer of patent right |