CN100464887C - Press die for preparing agglomerate ultra-fine crystal material - Google Patents
Press die for preparing agglomerate ultra-fine crystal material Download PDFInfo
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- CN100464887C CN100464887C CNB2007100456283A CN200710045628A CN100464887C CN 100464887 C CN100464887 C CN 100464887C CN B2007100456283 A CNB2007100456283 A CN B2007100456283A CN 200710045628 A CN200710045628 A CN 200710045628A CN 100464887 C CN100464887 C CN 100464887C
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- upper impression
- crystal material
- fine crystal
- die
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Abstract
The invention relates to an upsetting press die for preparation of bulk ultrafine crystalline materials, which belongs to the materials processing field. The invention comprises an extruding punch, an upper die and a lower die, wherein, the upper die is provided with a vertical square throughhole; the extruding punch is connected to a power plant for free access to the vertical square throughhole and is formed into a mould top chamber together with the upper die after entering into the upper die; the mould top chamber is a vertical square larger in height and length and smaller in width; the lower die is provided with a square or cylinder groove; the upper die and the lower die constitute a square or cylinder mould bottom chamber together. By the artful design of the mould top chamber and the mould bottom chamber, materials can return to the original shape after upsetting press deformation each time. The invention has the advantages of simple structure and strong grain refining capacity, and can prepare bulk ultrafine crystalline materials with even tissue and an average grain size ranging from 100 nm to 1 um.
Description
Technical field
What the present invention relates to is the mould in a kind of materials processing technology field, especially a kind of upsetting pressure mould for preparing the bulk super fine crystal material.
Background technology
In recent years, (Severe Plastic Deformation SPD) has obtained fast development to adopt big contingency approach directly to prepare the large plastometric set technology of block body ultrafine grain material.But the structural homogenity of block materials and the controllability of technology are the subject matter of large plastometric set technology always.
Find through literature search prior art, Chinese invention patent application number 01104059.9, denomination of invention: reciprocating extruding transfer moulding method and processing unit (plant) thereof, this patent adopts left recipient and right recipient to constitute squeeze receptacle, between left recipient and right recipient, be provided with a two-way crowded mould, this two-way extruding mold has at least one narrow and small relatively arrow path, alloy material to be processed is heated to softening temperature, in processing unit (plant), impose different directions pressure alternately, crumpled alloy material, make to form fine structure refinement and equally distributed alloy.But the shortcoming of this technology is that the collection extruding is deformed in one with jumping-up, so every time deflection can not be too big.Secondly,, therefore do not having under the enough big strain, be difficult to the super fine crystal material of preparation even tissue because extruding and jumping-up distortion all inevitably cause center strain and side strain not to wait.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of upsetting pressure mould for preparing the bulk super fine crystal material is provided, make that its grain refining capability is strong, easy to operate, simple in structure, handling ease, practical wide.
The present invention is achieved by the following technical solutions, the present invention includes: extruding drift, upper die and lower die.Annexation is: a vertical square through hole is arranged in the patrix, the extruding drift frees in and out this vertical square through hole, the extruding drift constitutes upper impression with patrix after entering patrix, thus upper impression be a height and length dimension greatly and the little vertical cuboid of width dimensions.One cuboid or cylinder groove are arranged in the counterdie, and upper die and lower die constitute cuboid or cylinder lower impressions together.
When described lower impressions was cuboid, its height and width equaled the width and the length of upper impression respectively, and the length of lower impressions is less than the height of upper impression.
When described lower impressions was cylinder, it highly equaled the width of upper impression, the diameter of lower impressions equal upper impression length and less than the height of upper impression.
Described upper die and lower die are by pin location and fixing.
Described extruding drift frees in and out the vertical square through hole of patrix by power-equipment.
The present invention adopts metal to make, in the upsetting pressure process, material to be processed is at first put into upper impression, under the effect of extruding drift, the material height direction size of being upset reduces and is pressed into gradually in the lower impressions, enter fully in the lower impressions up to all material, first passage upsetting pressure distortion finishes, and the material after the distortion is highly less cylinder or cuboid.To push drift then and return, and open pin and take out material, material will be reentered in the upper impression of patrix and extruding drift composition, carry out the distortion of second passage.Because the ingenious design of upper impression and lower impressions, the material after the distortion automatically restores to the shape after being out of shape for the first time for the second time.Above repeatedly process just can realize infinitely great strain, obtains super fine crystal material.
The present invention is by the shape of ingenious design upper impression and lower impressions, make every time upsetting pressure distortion back material return to original form, realize the upsetting pressure distortion of every time aximal deformation value, handling ease, practical wide, can prepare super fine crystal materials such as bulk metal, powder or macromolecular material, can under room temperature and high temperature, be out of shape.The present invention is simple in structure, grain refining capability is strong, and the average grain size scope that can prepare the even tissue of bulk is the super fine crystal material of 100nm-1 μ m.
Description of drawings
Fig. 1 structural representation of the present invention
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: extruding drift 1, patrix 2, pin 5, counterdie 6.Annexation is: a vertical square through hole is arranged in the patrix 2, and extruding drift 1 inserts and wherein just constitutes upper impression 3, thus upper impression 3 be a height and length dimension greatly and the little vertical cuboid of width dimensions.One cuboid or cylinder groove are arranged in the counterdie 6, constitute cuboid or cylinder lower impressions 4 with patrix 2.
When described lower impressions 4 is cuboid, its height and width equal the width and the length of upper impression 3 respectively, the length of lower impressions 4 is less than the height 5-15mm of upper impression 3, and the material after the upsetting pressure distortion is put into the extruding drift 1 guiding distance that upper impression 3 just has 5-15mm like this.
When described lower impressions 4 was cylinder, it highly equaled the width of upper impression 3, the diameter of lower impressions 4 equal upper impression 3 length and less than the height 5-15mm of upper impression 3.
Described upper impression 3 communicates with lower impressions 4, and makes material under the effect of extruding drift 1 power, is pressed in the lower impressions 4 when upsetting in upper impression 3, after material enters in the lower impressions 4 fully, reverts to the preceding shape of distortion.
Described patrix 2 and counterdie 6 are by pin 5 location and fixing.
Material to be processed is at first put into upper impression 3, under the effect of extruding drift 1, the material height direction size of being upset reduces and is pressed into gradually in the lower impressions 4, enters fully in the lower impressions 4 up to all material, first passage upsetting pressure distortion finishes, and the material after the distortion is a cylinder or cuboid.To push drift 1 then and return, and open pin 5 and take out material, material will be reentered in the upper impression 3 of patrix 2 and extruding drift 1 composition, carry out the distortion of second passage.Material after the distortion automatically restores to the shape after being out of shape for the first time for the second time.Above repeatedly process just can realize infinitely great strain, and the average grain size scope of preparing the even tissue of bulk is the super fine crystal material of 100nm-1 μ m.
Claims (7)
1, a kind of upsetting pressure mould for preparing the bulk super fine crystal material, comprise: extruding drift, upper die and lower die, it is characterized in that: a vertical square through hole is arranged in the patrix, the extruding drift frees in and out this vertical square through hole, after entering patrix, the extruding drift constitutes upper impression with patrix, upper impression be a height and length dimension greatly and the little vertical cuboid of width dimensions, one cuboid or cylinder groove are arranged in the counterdie, upper die and lower die constitute cuboid or cylinder lower impressions together, and upper impression communicates with lower impressions.
2, the upsetting pressure mould of preparation bulk super fine crystal material according to claim 1 is characterized in that, when described lower impressions was cuboid, its height and width equaled the width and the length of upper impression respectively, and the length of lower impressions is less than the height of upper impression.
3, the upsetting pressure mould of preparation bulk super fine crystal material according to claim 2 is characterized in that, the length of described lower impressions is less than the height 5-15mm of upper impression.
4, the upsetting pressure mould of preparation bulk super fine crystal material according to claim 1 is characterized in that, when described lower impressions was cylinder, it highly equaled the width of upper impression, the diameter of lower impressions equal upper impression length and less than the height of upper impression.
5, the upsetting pressure mould of preparation bulk super fine crystal material according to claim 4 is characterized in that, the diameter of described lower impressions is less than the height 5-15mm of upper impression.
6, the upsetting pressure mould of preparation bulk super fine crystal material according to claim 1 is characterized in that, described extruding drift frees in and out the vertical square through hole of patrix by power-equipment.
7, the upsetting pressure mould of preparation bulk super fine crystal material according to claim 1 is characterized in that, described upper die and lower die are by pin location and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100456283A CN100464887C (en) | 2007-09-06 | 2007-09-06 | Press die for preparing agglomerate ultra-fine crystal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100456283A CN100464887C (en) | 2007-09-06 | 2007-09-06 | Press die for preparing agglomerate ultra-fine crystal material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101116880A CN101116880A (en) | 2008-02-06 |
| CN100464887C true CN100464887C (en) | 2009-03-04 |
Family
ID=39053226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100456283A Expired - Fee Related CN100464887C (en) | 2007-09-06 | 2007-09-06 | Press die for preparing agglomerate ultra-fine crystal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100464887C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029300B (en) * | 2010-11-07 | 2012-11-07 | 上海交通大学 | Back-pressure four-way reciprocating heading device and processing method thereof |
| CN102029299B (en) * | 2010-12-18 | 2012-07-04 | 上海交通大学 | Multidirectional combined type circulating upsetting device and upsetting method |
| CN104511563A (en) * | 2013-12-14 | 2015-04-15 | 柳州市国顺机械制造有限公司 | Forming mould of rod head and bearing bush |
| CN104511493B (en) * | 2014-12-12 | 2016-10-05 | 太原理工大学 | A kind of detrusion blanking mold and the method for forming blank |
| CN105921657B (en) * | 2016-07-15 | 2018-06-29 | 合肥工业大学 | Prepare the two-way upsetting extrusion method of blanking type back pressure of refractory metal super fine crystal material |
| CN109604364A (en) * | 2018-12-30 | 2019-04-12 | 中北大学 | A kind of shaping dies of the channel pressings bases such as the two-way expansion of Mg-Gd-Y-Zn-Zr magnesium alloy |
| CN111069440A (en) * | 2019-12-16 | 2020-04-28 | 上海交通大学 | Local hot heading connection method of T-shaped structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819428A (en) * | 1981-07-24 | 1983-02-04 | Nippon Steel Corp | Production of hot-extruded alloy material |
| CN2690068Y (en) * | 2003-06-21 | 2005-04-06 | 大连理工大学 | Device for preparing super fine grain crystal pipe by equal passage corner extrusion |
| CN1709605A (en) * | 2005-06-16 | 2005-12-21 | 上海交通大学 | U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material |
| CN2768921Y (en) * | 2004-12-29 | 2006-04-05 | 上海交通大学 | Repeated upsetting extruding die for producing ultra-fine grained material |
-
2007
- 2007-09-06 CN CNB2007100456283A patent/CN100464887C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819428A (en) * | 1981-07-24 | 1983-02-04 | Nippon Steel Corp | Production of hot-extruded alloy material |
| CN2690068Y (en) * | 2003-06-21 | 2005-04-06 | 大连理工大学 | Device for preparing super fine grain crystal pipe by equal passage corner extrusion |
| CN2768921Y (en) * | 2004-12-29 | 2006-04-05 | 上海交通大学 | Repeated upsetting extruding die for producing ultra-fine grained material |
| CN1709605A (en) * | 2005-06-16 | 2005-12-21 | 上海交通大学 | U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101116880A (en) | 2008-02-06 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20180906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |