CN2690068Y - Device for preparing super fine grain crystal pipe by equal passage corner extrusion - Google Patents
Device for preparing super fine grain crystal pipe by equal passage corner extrusion Download PDFInfo
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- CN2690068Y CN2690068Y CN 03213769 CN03213769U CN2690068Y CN 2690068 Y CN2690068 Y CN 2690068Y CN 03213769 CN03213769 CN 03213769 CN 03213769 U CN03213769 U CN 03213769U CN 2690068 Y CN2690068 Y CN 2690068Y
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- 238000001125 extrusion Methods 0.000 title abstract description 18
- 239000013078 crystal Substances 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 15
- 238000010008 shearing Methods 0.000 abstract 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a device for preparing ultrafine grain pipe materials by equal passage corner extrusion, which belongs to the technical field of preparation for ultrafine grain pipe materials. The device for preparing the ultrafine grain pipe materials by equal passage corner extrusion achieves pure shearing extrusion deformation through the change of a processing method of extrusion forming. A special die device is arranged on an extruder to extrude and process pipe blanks which are deformed. The deformation can be conducted repeatedly for many times, and finally the microstructures in the pipe materials are changed into the ultrafine grains. Therefore, the ultrafine grain pipe materials are acquired to achieve that the pipe diameter and the pipe wall in each deformation are not changed, and the deformation is the pure shearing deformation; the pure shearing deformation is favorable to the refinement of the grains, and a set of dies can be used for processing repeated deformation for many times. The device for preparing the ultrafine grain pipe materials by equal passage corner extrusion has the characteristics of short stage, high efficiency and low cost, and the utility model is suitable for various materials.
Description
Technical field the invention belongs to ultra-fine grain preparation of pipes technical field, and particularly a kind of particular manufacturing craft device of equal channel angular extruding preparation ultra-fine grain tubing is particularly suitable for the production of ultra-fine grain tubing.
Background technology ultra-fine grain tubing is that the preparation of pipes process technology is pursued the high-end product that obtains because of having good plasticity toughness and higher intensity.Owing to have comprehensive mechanical property well, thereby be widely used in industry such as cool-heat-exchanger, chemical building material, pipe fitting deep processing.For ultra-fine grain tubing, the processing molding method of preparation process is one of problem of most critical, guarantees that obtaining to have uniform ultra-fine grain heterogeneous microstructure is the major technology problem.
Ultra-fine grain tubing has some preparation method for processing at present, mainly be rolling, extruding and forging etc., utilize the preparation ultra-fine grain tubing of these methods, need repeatedly distortion, topmost shortcoming is that each distortion must reduce the caliber and the pipe thickness of tubing and produce uneven distortion, and needs very big operating pressure.This will seek out ultra-fine grain for the tubing that intended size requires, and must begin distortion from very big wall thickness and caliber, thereby need many molds and multiple working procedure.For the material that this is big for resistance of deformation, deformation temperature is high, its manufacturing cost is sizable.Existing pure shear extrusion technique method can only be out of shape solid circle, square rods, can not implement extruding preparation ultra-fine grain to tubing.
Summary of the invention the purpose of this invention is to provide a kind of caliber of multiple material, short flow process, high efficiency, low cost, the each distortion of realization and device of the indeclinable equal channel angular extruding of tube wall preparation ultra-fine grain tubing of being applicable to.
Technical conceive of the present invention is by changing the mode of texturing of extrusion molding, realized the pure shear crimp of tubing, the particular manufacturing craft device promptly is set on extruder, pipe is out of shape from described extrusion die device on extruder, this distortion can repeatedly be carried out repeatedly, finally makes the interior microscopic tissue of tubing become ultra-fine grain.
The realization pipe is made the tubing that interior tissue is a ultra-fine grain, and the macro-size of pipe does not change in preparation process, and inner tissue has all even homogeneity.Because the distortion of pipe concentrates on the corner of recipient, distortion has pure shear, the pipe distortion is carried out in mould, obtain the tubing of ultra-fine grain by repeated deformation repeatedly, each distortion can be changeed 0 °～180 ° to becoming along extrusion axis, improve each deformation extent, accelerate the refinement speed of crystal grain; The angle of recipient corner is changed to 90 °～160 °, adapts to different blank tube material.The inventive method is by changing the mode of texturing of pure shear extruding, has realized that the tubing interior microscopic organizes ultra-fineization of grain size, and the mechanical property and the metallurgical quality that improve tubing also reduce cost.
Technical solution of the present invention is, a kind of device of equal channel angular extruding preparation ultra-fine grain tubing, comprise recipient 1, following recipient 2 and be contained in the last recipient 1 that links together, the heating jacket 3 outside the following recipient 2, its special, also comprise the pressure ram 4, support ring 5 and the plug 6 that are contained in the hollow in recipient 1, the following recipient 2, the upper end of plug 6 is inserted in 4 li of pressure rams, and support ring 5 is passed in the lower end of plug 6.
The present invention has following beneficial effect:
1. when adopting the present invention to prepare ultra-fine grain tubing, by changing the mode of texturing of extrusion molding, realized the microstructure refinement of tubing, direct convenience ground obtains the tubing of ultra-fine grain, is applicable to the pipe of multiple material.
2. the pipe that adopts the present invention to carry out difficult distortion and be easy to oxidation material prepares ultra-fine grain tubing.
3. adopt that production of the present invention is easy to implement, flow process is short, little to size, the material limitation of tubing, be easy to control the grain size and the metallurgical quality of tubing, can reduce manufacturing cost and difficulty of preparation technology, can guarantee the homogeneity of connecting leg material internal soundness.
4. the present invention is particularly useful for making ultra-fine grain tubing, also can cooperate to change each deformation direction, increases deformation extent, and can obtain the extra fine microstructure even obtain nanocrystal, and the interior tissue good uniformity of tubing.
Description of drawings is described in further detail the present invention below in conjunction with drawings and Examples.
Fig. 1 is the apparatus structure schematic diagram of equal channel angular extruding preparation ultra-fine grain tubing.
The specific embodiment
A kind of device of equal channel angular extruding preparation ultra-fine grain tubing, comprise recipient 1, following recipient 2 and be contained in the last recipient 1 that links together, the heating jacket 3 outside the following recipient 2, its special, also comprise the pressure ram 4, support ring 5 and the plug 6 that are contained in the hollow in recipient 1, the following recipient 2, the upper end of plug 6 is inserted in 4 li of pressure rams, and support ring 5 is passed in the lower end of plug 6.Be provided with and the consistent plug 6 of following recipient 2 corners in last recipient 1, following recipient 2, pipe 7 has been realized the pure shear distortion under the acting in conjunction of recipient and plug.
On extruder, utilize hot-extrusion method to make pipe, make the long pipe 7 of scale through preliminary finishing, in heat-treatment furnace, carry out destressing and homogenizing annealing, pipe after handling is carried out crimp in the dedicated extruded mould on the extruder, to be lubricated the inside and outside hole of pipe and extrusion die inner core and plug, should mate mutually between the technological parameters such as the preheat temperature of extrusion die, pipe preheat temperature, extrusion speed in the extrusion process used for forming, specifically according to the material of distortion pipe and the ultrafine grain size decision of size and preparation.Wrought aluminium alloy LF6 heavy wall pipe 20 * 5mm, the grain size of pipe is 5 μ m before extruding, adopts this method that pipe is carried out deformation process, can make its microstructure refinement and the macro-size of pipe is constant, obtains the tubing of ultra-fine grain; The recipient corner of distortion mould is 120 °, every distortion once, the relative extrusion axis of pipe changes 90 °, the long 200mm of pipe; Extrusion speed is 2m/min, and 200 ℃ of mold temperatures, pipe preheat temperature are 300 ℃, and crimp is carried out continuously, and middle no annealing process through 4 crimp, obtains the good tubing of inner uniform crystal particles, and its grain size is 0.8 μ m.
Claims (1)
1. the equal channel angular extruding prepares the device of ultra-fine grain tubing, comprise recipient (1), following recipient (2) and be contained in the last recipient (1) that links together, the outer heating jacket (3) of following recipient (2), it is characterized in that, also comprise the pressure ram (4), support ring (5) and the plug (6) that are contained in the hollow in recipient (1), the following recipient (2), the upper end of plug (6) is inserted in pressure ram (4) lining, and support ring (5) is passed in the lower end of plug (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213769 CN2690068Y (en) | 2003-06-21 | 2003-06-21 | Device for preparing super fine grain crystal pipe by equal passage corner extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213769 CN2690068Y (en) | 2003-06-21 | 2003-06-21 | Device for preparing super fine grain crystal pipe by equal passage corner extrusion |
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| Publication Number | Publication Date |
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| CN2690068Y true CN2690068Y (en) | 2005-04-06 |
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| CN 03213769 Expired - Fee Related CN2690068Y (en) | 2003-06-21 | 2003-06-21 | Device for preparing super fine grain crystal pipe by equal passage corner extrusion |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298450C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Broken line type extrusion shaping apparatus |
| CN1298448C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Broken-line type extrusion shaping method |
| CN1298449C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Spiral extrusion shaping method |
| CN1298451C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Spiral extrusion shaping and processing apparatus |
| CN1302867C (en) * | 2005-06-16 | 2007-03-07 | 上海交通大学 | U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material |
| CN100464887C (en) * | 2007-09-06 | 2009-03-04 | 上海交通大学 | Press die for preparing agglomerate ultra-fine crystal material |
| CN101134211B (en) * | 2006-08-28 | 2010-05-12 | 太原理工大学 | L-shaped extrusion device for producing ultra-fine crystal block body material |
| 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 |
| CN101797597A (en) * | 2010-04-06 | 2010-08-11 | 南昌航空大学 | Equal channel angular extrusion die |
| CN101797595A (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 matching structure of multipath equal-channel extrusion device |
| CN101890438A (en) * | 2010-07-16 | 2010-11-24 | 中国航空工业集团公司北京航空材料研究院 | Male die of equal channel angular pressing device |
| CN101693264B (en) * | 2009-10-16 | 2011-02-16 | 江苏大学 | Large equal channel angular large-strain extrusion die |
| CN102189143A (en) * | 2011-03-24 | 2011-09-21 | 哈尔滨工程大学 | ECAE (equal channel angular extrusion) based preparation method of ultrafine crystal NiTi shape memory alloy tube |
| CN102601147A (en) * | 2012-03-21 | 2012-07-25 | 西北工业大学 | Mould for multi-blank equal-channel angular welding extruded molded pipe |
| CN103978056A (en) * | 2014-05-23 | 2014-08-13 | 西北工业大学 | Device for preparing ultra-fine grain material by integral transverse extrusion |
| CN104014608A (en) * | 2014-06-05 | 2014-09-03 | 徐州工程学院 | Multi-corner composite equal channel angular twist extrusion die |
| CN105107857A (en) * | 2015-08-26 | 2015-12-02 | 山东建筑大学 | Novel preparation method for high-strength nanocrystalline steel pipe |
| CN109332415A (en) * | 2018-11-14 | 2019-02-15 | 江苏科技大学 | A kind of expanding extrusion die of corner that tubing is prepared using bar and method |
| CN109821915A (en) * | 2019-03-20 | 2019-05-31 | 福建省闽发铝业股份有限公司 | A kind of ultra-thin aluminum alloy profile extrusion technique |
-
2003
- 2003-06-21 CN CN 03213769 patent/CN2690068Y/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298450C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Broken line type extrusion shaping apparatus |
| CN1298448C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Broken-line type extrusion shaping method |
| CN1298449C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Spiral extrusion shaping method |
| CN1298451C (en) * | 2005-06-16 | 2007-02-07 | 上海交通大学 | Spiral extrusion shaping and processing apparatus |
| CN1302867C (en) * | 2005-06-16 | 2007-03-07 | 上海交通大学 | U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material |
| CN101134211B (en) * | 2006-08-28 | 2010-05-12 | 太原理工大学 | L-shaped extrusion device for producing ultra-fine crystal block body material |
| CN100464887C (en) * | 2007-09-06 | 2009-03-04 | 上海交通大学 | Press die for preparing agglomerate ultra-fine crystal material |
| CN101693264B (en) * | 2009-10-16 | 2011-02-16 | 江苏大学 | Large equal channel angular large-strain extrusion die |
| 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 |
| CN101797595B (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 matching structure of multipath equal-channel extrusion device |
| CN101797595A (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 matching structure of multipath equal-channel 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 |
| CN101797597B (en) * | 2010-04-06 | 2011-08-17 | 南昌航空大学 | Equal channel angular extrusion die |
| CN101797597A (en) * | 2010-04-06 | 2010-08-11 | 南昌航空大学 | Equal channel angular extrusion die |
| CN101890438A (en) * | 2010-07-16 | 2010-11-24 | 中国航空工业集团公司北京航空材料研究院 | Male die of equal channel angular pressing device |
| CN102189143A (en) * | 2011-03-24 | 2011-09-21 | 哈尔滨工程大学 | ECAE (equal channel angular extrusion) based preparation method of ultrafine crystal NiTi shape memory alloy tube |
| CN102189143B (en) * | 2011-03-24 | 2013-02-06 | 哈尔滨工程大学 | ECAE (equal channel angular extrusion) based preparation method of ultrafine crystal NiTi shape memory alloy tube |
| CN102601147A (en) * | 2012-03-21 | 2012-07-25 | 西北工业大学 | Mould for multi-blank equal-channel angular welding extruded molded pipe |
| CN102601147B (en) * | 2012-03-21 | 2014-04-16 | 西北工业大学 | Mould for multi-blank equal-channel angular welding extruded molded pipe |
| CN103978056A (en) * | 2014-05-23 | 2014-08-13 | 西北工业大学 | Device for preparing ultra-fine grain material by integral transverse extrusion |
| CN104014608A (en) * | 2014-06-05 | 2014-09-03 | 徐州工程学院 | Multi-corner composite equal channel angular twist extrusion die |
| CN104014608B (en) * | 2014-06-05 | 2016-01-06 | 徐州工程学院 | Twisting die tool is squeezed at many corners composite equal diameter angle |
| CN105107857A (en) * | 2015-08-26 | 2015-12-02 | 山东建筑大学 | Novel preparation method for high-strength nanocrystalline steel pipe |
| CN109332415A (en) * | 2018-11-14 | 2019-02-15 | 江苏科技大学 | A kind of expanding extrusion die of corner that tubing is prepared using bar and method |
| CN109332415B (en) * | 2018-11-14 | 2020-02-14 | 江苏科技大学 | Corner expanding extrusion die and method for preparing pipe by using bar stock |
| CN109821915A (en) * | 2019-03-20 | 2019-05-31 | 福建省闽发铝业股份有限公司 | A kind of ultra-thin aluminum alloy profile extrusion technique |
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