CN101823085A - Variable-channel extrusion die and forming method - Google Patents
Variable-channel extrusion die and forming method Download PDFInfo
- Publication number
- CN101823085A CN101823085A CN200910021371A CN200910021371A CN101823085A CN 101823085 A CN101823085 A CN 101823085A CN 200910021371 A CN200910021371 A CN 200910021371A CN 200910021371 A CN200910021371 A CN 200910021371A CN 101823085 A CN101823085 A CN 101823085A
- Authority
- CN
- China
- Prior art keywords
- section
- blank
- die
- length
- aftershaping
- 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
Landscapes
- Forging (AREA)
Abstract
The invention relates to a variable-channel extrusion die and a forming method. The variable-channel extrusion die comprises a male die (1) and a female die (3), a die cavity of the female die sequentially comprises a feeding section (4), a front forming section (5), a middle forming section (6), a rear forming section (7) and a discharging section (8) from an inlet of a blank (2) to an outlet of the blank (2), wherein the feeding section (4) is a circular equant channel, the front forming section (5) is a circular-elliptical transition channel, the middle forming section (6) is a prismatic elliptical channel, the rear forming section (7) is an elliptical-circular transition channel, and the discharging section (8) is a prismatic circular channel; and the blank (2) enters from an inlet of the female die (3) and is limited by the die cavity of the female die (3) to change a circular cross-section into an elliptical cross-section and change the elliptical cross-section into the circular cross-section in order to form a performed workpiece. The variable-channel extrusion die has simple structure, low load, low cost and high efficiency and can be widely applied to producing rods and wires of steel and nonferrous metal and forging and blanking difficultly deformed materials of large-scale shaft parts, high-speed steel, powder metallurgy, and the like.
Description
One, technical field
The present invention relates to the hot-working field of metal material, specifically is a kind of variable-channel extrusion die and forming method.
Two, background technology
Along with progress of modern technology, great equipment develops to the direction of large-scale, heavily loaded, high power, high reliability.In industrial departments such as Aeronautics and Astronautics, atomic energy, automobile, machinery, play irreplaceable effect as the FMT that main load-carrying member is provided for great equipment.Forging Technology not only can obtain needed shape and size, and can also improve the mechanical properties such as intensity, plasticity and toughness of material significantly.
In great mechanized equipment, very big relation is arranged as the fracture accident and the forging quality of parts such as train main shaft, automobile crane, aero-engine turbine disk, turbo blade.Part breaking is a very complicated process, and the heterogeneous microstructure of material is the principal element that influences the material fracture.In hot procedures such as metallurgy, casting, forging, tissue defects such as often there is shrinkage cavity in material internal, loosens, is mingled with, segregation, crystal grain are thick, and fracture crack is at first from these position forming cores and grow up.Therefore,, smash field trash, improve the metallurgical quality of steel by the crystal grain of blank-making technology refinement forging, most important to improving the forging mechanical property.
Conventional forging blank-making technology has upsetting pull and extrusion process.Single upsetting pull process distortions degree is little, is unfavorable for improving the interior tissue of blank, and the very big tension of the external margin of blank existence, and crackle appears in regular meeting in forming process, thereby causes waste product.And conventional extrusion process, equipment needed thereby tonnage height, the mould carrying is complicated; The outer margin deformation degree is big, and the internal modification degree is little.Therefore, Chang Gui forging blank-making technology is unfavorable for improving the interior tissue of blank.
Phase early 1980s, Segal and partner thereof have proposed to carry out equal channel angle extruding (Equal Channel Angular Press ECAP) base technology of intense plastic strain under the condition that does not change the blank cross sectional shape, its principle be by repeatedly repeatedly detrusion obtain sub-micron or nanoscale tissue.Equal channel angle extruding blank-making technology is after once pushing, the stress distribution of its section is extremely inhomogeneous, need through repeatedly shifting gears and the translation-angle extruding, to obtain the bigger strain and the even distribution of strain, and the distortion stress state that blank bore is undesirable in the extrusion process, and the stress distribution of section is also restive evenly.
Three, summary of the invention
For overcome exist in the prior art or material regular meeting in forming process crackle appears; perhaps equipment needed thereby tonnage height, mould carry complicated; perhaps in the equal channel angle extruding; the distortion stress state that blank bore is undesirable; the also restive uniform deficiency of the stress distribution of section the present invention proposes a kind of variable-channel extrusion die and forming method.
Variable-channel extrusion die that the present invention adopts mainly comprises punch and die.Punch is cylindrical, and an end is the clamping stiff end of extrusion equipment, and the other end is the extruding working end; The appearance and size of punch working position is with the appearance and size of blank.
Die is a hollow cylindrical, and its appearance and size must satisfy the requirement of strength of extruding.The hollow space of die has formed the extrusion die die cavity, and this extrusion die die cavity is divided into five parts, is entered the mouth to the blank outlet by blank, is followed successively by feed zone, preceding profiled section, middle profiled section, aftershaping section and discharging section.Feed zone is circular isometrical passage, and the length of this feed zone is slightly larger than the length of blank; The diameter of feed zone is with the diameter of blank.Before profiled section be circle-oval transition passage, promptly should before the two ends of profiled section be respectively circle and oval, and the diameter of circle is with the diameter of blank, oval-shaped area is 80～85% of a blank area, the ratio of major and minor axis is 2～2.5; Smooth transition between circle and the ellipse; The length of preceding profiled section is 1/3～1/4 charge length.Middle profiled section is prismatic oval-shaped passageway, and the major axis in its cross section and minor axis be the cross section of the oval port of the same profiled section all; Middle profiled section 6 rotates 0～45 ° to increase the torsional deflection composition with the oval cross section of aftershaping section 7 abutting ends around the die center line; The length of middle profiled section is 1/3～1/4 charge length.The aftershaping section is an ellipse-circle transition passage, and the ellipse of aftershaping Duan Yiduan and middle profiled section is oval identical, the round diameter of the other end with moulding after the diameter of prefabricated workpiece; Smooth transition between ellipse and the circle; The length of aftershaping section is 1/3～1/4 charge length.Discharging section is the uiform section circular channel, and its diameter is identical with the diameter of aftershaping section circular port, and the length of this discharging section is 1/2 charge length.
When utilizing the moulding prefabricated workpiece of the present invention, drive punch, thereby make punch drive blank by extrusion equipment; Make blank from the die import pass through successively the feed zone of die, preceding profiled section, profiled section, aftershaping section and discharging section, become oval cross section by the circular section earlier, become the circular section by oval cross section again, mold prefabricated workpiece at last.Forming process of the present invention is:
1) blanking, according to the specification of moulding prefabricated workpiece and extrusion ratio prepare blank.
2) with blank heating.Heating-up temperature and temperature retention time are determined with reference to the Forging Technology handbook according to the blank trade mark and specification.
3) preheating and lubricated mould, 300 ℃ of preheat temperatures.
4) blank is placed horizontally in the die, punch is with the extrusion speed extrusion billet of 1～10mm/s; Blank from the import of die enter and successively by the feed zone of die, preceding profiled section, profiled section, aftershaping section and discharging section, make blank become oval cross section by the circular section, become the circular section by oval cross section again.
5) when blank passes through the feed zone of die fully, withdraw from punch; From die outlet adopt Hubbing method make blank continue by die preceding profiled section, profiled section, aftershaping section and discharging section distortion, be shaped to prefabricated workpiece at last.
6) take out prefabricated workpiece and cooling.
Flexible road extrusion process is formed by being equivalent on cross section upsetting pull distortion and torsional deflection for twice, has realized the combination of various deformation pattern in extrusion process.Rigid plasticity finite element the analysis showed that the deformation characteristics of flexible road extrusion process is a stead deformation, and head is removed in the distortion back, stress distribution is even vertically for last two ends outer blank.Flexible road extrusion process can obtain than conventional extruded technology and the twice deformation extent of open die forging pulling technology, stress distribution is evenly whole on the blank cross section, the strain in the inner big zone of blank is slightly larger than external strain, the bigger zone of its internal strain is ellipticity, the stress distribution and the stress distribution of blank inside have greatly been improved, help the residual cast sturcture of broken steel, change the form and the distribution of field trash, eliminate the steel internal structural flaw.The strain of blank each point before, during and after profiled section sharply strengthen, constant substantially at feed zone and discharging section.The blank each point is bearing bigger hydrostatic pressing stress in deformation process, thereby helps bringing into play the plastic deformation ability of material.Flexible road extrusion process can be applied to the forging base of difficult-to-deformation materials such as macrotype axes series parts such as train main shaft, automobile crane and high-speed steel, powder metallurgy, improves the mechanical property of forging; Also can be applied to the production of the bar and the wire rod of iron and steel and non-ferrous metal, improve the mechanical property of bar and wire rod.The present invention has that mould structure is simple, and the characteristics that the load tonnage is little help reducing production costs, and enhances productivity, and realizes the production automation.
Four, description of drawings
Accompanying drawing 1 is the structural representation of variable-channel extrusion die;
Accompanying drawing 2 is structural representations of die;
Accompanying drawing 3 is cross sectional shape schematic diagrames of die feed zone;
Accompanying drawing 4 is cross sectional shape schematic diagrames of profiled section before the die;
Accompanying drawing 5 is cross sectional shape schematic diagrames of profiled section in the die;
Accompanying drawing 6 is cross sectional shape schematic diagrames of die aftershaping section;
Accompanying drawing 7 is cross sectional shape schematic diagrames of die discharging section.Wherein:
1. profiled section 7. aftershaping sections 8. discharging sections in the profiled sections 6. before punch 2. blanks 3. dies 4. feed zones 5.
Five, the specific embodiment
Embodiment one
Present embodiment adopts the prefabricated workpiece of the nickelic cobalt post-curing of variable-channel extrusion die extrusion modling Aermet100 type unimach.Blank 2 specifications of moulding prefabricated workpiece are
100mm * 400mm prepares specification and is
The prefabricated workpiece of 80mm * 625mm.Extrusion process parameters is respectively that extrusion speed is 10mm/s, and deformation temperature is 900～1000 ℃, and the coefficient of friction between blank 2 and the die 3 is 0.2～0.4.
The variable-channel extrusion die that present embodiment adopted mainly comprises punch 1 and die 3.Punch 1 and die 3 all adopt the 5CrNiMo steel to make.Punch 1 is cylindrical, and an end is the clamping stiff end of extrusion equipment, and the other end is the extruding working end; The appearance and size of punch 1 working position is with the appearance and size of blank 2.
As shown in Figure 2, die 3 is the hollow square column type, and its appearance and size must satisfy the requirement of strength of extruding.The hollow space of die 3 has formed the extrusion die die cavity, and this extrusion die die cavity is divided into five parts, is entered the mouth to blank 2 outlets by blank 2, is followed successively by feed zone 4, preceding profiled section 5, middle profiled section 6, aftershaping section 7 and discharging section 8.Feed zone 4 is circular isometrical passage, and the length of this feed zone 4 is slightly larger than the length of blank 2, and in the present embodiment, the length of feed zone 4 is 500mm; The diameter of feed zone 4 is with the diameter of blank 2.The length of preceding profiled section 5 is 1/4 blank, 2 length; The die cavity of preceding profiled section 5 is the oval transition passage of circle, and the two ends of profiled section 5 are respectively circle and oval before promptly being somebody's turn to do, and oval-shaped and long-pending is 80% of blank area, the ratio of major and minor axis is 2.5, promptly Yuan Xing diameter is 100mm, and oval-shaped major axis is 73mm, and minor axis is 28.92mm; Smooth transition between circle and the ellipse.The length of middle profiled section 6 is 1/4 blank, 2 length; The die cavity of middle profiled section 6 is prismatic oval-shaped passageway, and the major axis in its cross section and minor axis be the cross section of the oval port of the same profiled section 5 all.The length of aftershaping section 7 is 1/4 blank, 2 length; The die cavity of aftershaping section 7 is an oval circle transition passage; The ellipse of these aftershaping section 7 one ends is oval identical with middle profiled section 6, and the diameter of the circle of the other end is 80mm; Smooth transition between ellipse and the circle.The length of discharging section 8 is 1/2 blank, 2 length; The die cavity of discharging section 8 is prismatic circular channel, and its diameter is identical with the diameter of the circle of aftershaping section 7 one ends.
When utilizing the moulding prefabricated workpiece of present embodiment, extrusion equipment drives punch 1, and by punch 1 driving blank 2, make blank 2 from the import of die 3 pass through successively die 3 feed zone 4, preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8, earlier become oval cross section by the circular section, become the circular section by oval cross section again, final molding is that specification is
The prefabricated workpiece of 80mm * 625mm.The forming process of present embodiment is:
1) blanking, the specification of blank 2 is
100mm * 400mm.
2) blank 2 is heated to 900～1000 ℃, and is incubated 30 minutes.
3) preheating and lubricated mould, 300 ℃ of preheat temperatures.
4) blank 2 is placed horizontally in the die 3, punch 1 is with the extrusion speed extrusion billet 2 of 10mm/s, blank 2 from the import of die 3 enter and successively the feed zone 4 by die 3, preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8, make blank 2 become oval cross section, become the circular section by oval cross section again by the circular section.
5) when blank 2 passes through the feed zone 4 of die 3 fully, withdraw from punch 1; From die 3 outlet adopt Hubbing methods make blank 2 continue by die 3 preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8 distortion, be shaped at last
The prefabricated workpiece of 80mm * 625mm.
6) take out prefabricated workpiece, and adopt the cooling in heap mode to cool off.
Embodiment two
Present embodiment adopts the prefabricated workpiece of the nickelic cobalt post-curing of variable-channel extrusion die extrusion modling Aermet100 type unimach.Blank 2 specifications of moulding prefabricated workpiece are
120mm * 450mm prepares specification and is
The prefabricated workpiece of 100mm * 648mm.Extrusion process parameters is respectively that extrusion speed is 1mm/s, and deformation temperature is 900～1000 ℃, and the coefficient of friction between blank 2 and the die 3 is 0.2～0.4.
The variable-channel extrusion die that present embodiment adopted mainly comprises punch 1 and die 3, and punch 1 and die 3 all adopt the 5CrMnMo steel to make.Punch 1 is cylindrical, and an end is the clamping stiff end of extrusion equipment, and the other end is the extruding working end; The appearance and size of punch 1 working position is with the appearance and size of blank 2.
Die 3 is a hollow cylindrical, and its appearance and size must satisfy the requirement of strength of extruding.The hollow space of die 3 has formed the extrusion die die cavity, and this extrusion die die cavity is divided into five parts, is entered the mouth to blank 2 outlets by blank 2, is followed successively by feed zone 4, preceding profiled section 5, middle profiled section 6, aftershaping section 7 and discharging section 8.Feed zone 4 is circular isometrical passage, and the length of this feed zone 4 is slightly larger than the length of blank 2, and in the present embodiment, the length of feed zone 4 is 550mm; The diameter of feed zone 4 is with the diameter of blank 2.The length of preceding profiled section 5 is 1/3 blank, 2 length; Die cavity is a circle-oval transition passage, and the two ends of profiled section 5 are respectively circular and oval before promptly being somebody's turn to do, and oval-shaped area is 85% of a blank area, the ratio of major and minor axis is 2, promptly Yuan Xing diameter is 120mm, and oval-shaped major axis is 78.24mm, and minor axis is 39.12mm; Smooth transition between circle and the ellipse.The length of middle profiled section 6 is 1/3 blank, 2 length, and die cavity is prismatic oval-shaped passageway, and the major axis in its cross section and minor axis be the cross section of the oval port of the same profiled section 5 all; Middle profiled section 6 turns clockwise 30 ° with the oval cross section of aftershaping section 7 abutting ends around the die center line.The length of aftershaping section 7 is 1/3 blank, 2 length, and die cavity is an ellipse-circle transition passage; The ellipse of these aftershaping section 7 one ends is oval identical with middle profiled section 6, and the diameter of the circle of the other end is 100mm; Smooth transition between ellipse and the circle.The length of discharging section 8 is 1/2 blank, 2 length, and die cavity is prismatic circular channel, and its diameter is identical with the diameter of the circle of aftershaping section 7 one ends.
When utilizing the moulding prefabricated workpiece of present embodiment, extrusion equipment drives punch 1, and by punch 1 driving blank 2, make blank 2 from the import of die 3 pass through successively die 3 feed zone 4, preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8, earlier become oval cross section by the circular section, become the circular section by oval cross section again, final molding is that specification is
The prefabricated workpiece of 100mm * 648mm.The forming process of present embodiment is:
1) blanking, the specification of blank 2 is
120mm * 450mm.
2) blank 2 is heated to 900～1000 ℃, and is incubated 30 minutes.
3) preheating and lubricated mould, 300 ℃ of preheat temperatures.
4) blank 2 is placed horizontally in the die 3, punch 1 is with the extrusion speed extrusion billet 2 of 1mm/s, blank 2 from the import of die 3 enter and successively the feed zone 4 by die 3, preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8, make blank 2 become oval cross section, become the circular section by oval cross section again by the circular section.
5) when blank 2 passes through the feed zone 4 of die 3 fully, withdraw from punch 1; From die 3 outlet adopt Hubbing methods make blank 2 continue by die 3 preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8 distortion, be shaped at last
The prefabricated workpiece of 100mm * 648mm.
6) take out prefabricated workpiece, and adopt the cooling in heap mode to cool off.
Embodiment three
Present embodiment adopts the prefabricated workpiece of variable-channel extrusion die extrusion modling Ti-6Al-4V titanium alloy.Blank 2 specifications of moulding prefabricated workpiece are
110mm * 400mm prepares specification and is
The prefabricated workpiece of 85mm * 670mm.Extrusion process parameters is respectively that extrusion speed is 5mm/s, and deformation temperature is 850～950 ℃, and the coefficient of friction between blank 2 and the die 3 is 0.2～0.4.
The variable-channel extrusion die that present embodiment adopted mainly comprises punch 1 and die 3, and punch 1 and die 3 all adopt the 5CrNiMo steel to make.Punch 1 is cylindrical, and an end is the clamping stiff end of extrusion equipment, and the other end is the extruding working end; The appearance and size of punch 1 working position is with the appearance and size of blank 2.
Die 3 is a hollow cylindrical, and its appearance and size must satisfy the requirement of strength of extruding.The hollow space of die 3 has formed the extrusion die die cavity, and this extrusion die die cavity is divided into five parts, is entered the mouth to blank 2 outlets by blank 2, is followed successively by feed zone 4, preceding profiled section 5, middle profiled section 6, aftershaping section 7 and discharging section 8.Feed zone 4 is circular isometrical passage, and the length of this feed zone 4 is slightly larger than the length of blank 2, and in the present embodiment, the length of feed zone 4 is 500mm; The diameter of feed zone 4 is with the diameter of blank 2.The length of preceding profiled section 5 is 1/3 blank, 2 length; Die cavity is a circle-oval transition passage, and the two ends of profiled section 5 are respectively circular and oval before promptly being somebody's turn to do, and oval-shaped area is 81% of a blank area, and the ratio of major and minor axis is 2, and promptly Yuan Xing diameter is 110mm, and oval-shaped major axis is 70mm, and minor axis is 35mm; Smooth transition between circle and the ellipse.The length of middle profiled section 6 is 1/3 blank, 2 length, die cavity is prismatic oval-shaped passageway, the major axis in its cross section and minor axis be the cross section of the oval port of the same profiled section 5 all, and middle profiled section 6 is rotated counterclockwise 45 ° with the oval cross section of aftershaping section 7 abutting ends around the die center line.The length of aftershaping section 7 is 1/3 blank, 2 length; Die cavity is an ellipse-circle transition passage, and the ellipse of these aftershaping section 7 one ends is oval identical with middle profiled section 6, and the diameter of the circle of the other end is 85mm; Smooth transition between ellipse and the circle.The length of discharging section 8 is 1/2 blank, 2 length, and die cavity is prismatic circular channel, and its diameter is identical with the diameter of the circle of aftershaping section 7 one ends.
When utilizing the moulding prefabricated workpiece of present embodiment, extrusion equipment drives punch 1, and by punch 1 driving blank 2, make blank 2 from the import of die 3 pass through successively die 3 feed zone 4, preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8, earlier become oval cross section by the circular section, become the circular section by oval cross section again, final molding is prefabricated workpiece.The forming process of present embodiment is:
1) blanking, blank 2 be specification
110mm * 400mm.
2) blank 2 is heated to 850～950 ℃, and is incubated 30 minutes.
3) preheating and lubricated mould, 300 ℃ of preheat temperatures.
4) blank 2 is placed horizontally in the die 3, punch 1 is with the extrusion speed extrusion billet 2 of 5mm/s, blank 2 from the import of die 3 enter and successively the feed zone 4 by die 3, preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8, make blank 2 become oval cross section, become the circular section by oval cross section again by the circular section.
5) when blank 2 passes through the feed zone of die fully, withdraw from punch 1; From die 3 outlet adopt Hubbing methods make blank continue by die 3 preceding profiled section 5, profiled section 6, aftershaping section 7 and discharging section 8 distortion, be shaped at last
The prefabricated workpiece of 85mm * 670.
6) take out prefabricated workpiece, and adopt the cold mode of stove to cool off.
Claims (3)
1. a variable-channel extrusion die mainly comprises punch (1) and die (3); Die (3) is a hollow cylindrical, and its hollow space has formed the extrusion die die cavity; One end of punch (1) is the clamping stiff end of extrusion equipment, and the other end is the extruding working end.It is characterized in that the extrusion die die cavity of die (3) is entered the mouth to the outlet of blank (2) by blank (2), be followed successively by feed zone (4), preceding profiled section (5), middle profiled section (6), aftershaping (7) and discharging section (8).Feed zone (4) is circular isometrical passage, the diameter of the same blank of diameter (2); Preceding profiled section (5) is a circle-oval transition passage, and this oval-shaped area is 80～85% of a blank area, and the ratio of major and minor axis is 2～2.5, smooth transition between circle and the ellipse; Middle profiled section (6) is prismatic oval-shaped passageway, and the major axis in its cross section and minor axis be the cross section of the oval port of the same profiled section all, and middle profiled section (6) rotates 0～45 ° with the oval cross section of aftershaping section (7) abutting end around the die center line; Aftershaping section (7) is an ellipse-circle transition passage, and the ellipse of these aftershaping section (7) one ends is oval identical with middle profiled section (6), the round diameter of the other end with moulding after the diameter of prefabricated workpiece, smooth transition between ellipse and the circle; Discharging section (8) is prismatic circular channel, and its diameter is identical with the diameter of the circle of aftershaping Duan Yiduan.
2. variable-channel extrusion die according to claim 1 is characterized in that the length of feed zone (4) is slightly larger than the length of blank (2); The length of preceding profiled section (5) is 1/3～1/4 blank (2) length; The length of middle profiled section (6) is 1/3～1/4 blank (2) length; The length of aftershaping section (7) is 1/3～1/4 blank (2) length; The length of discharging section (8) is 1/2 blank (2) length.
3. forming method of variable-channel extrusion die according to claim 1 is characterized in that forming process comprises:
A. blanking, according to the specification of moulding prefabricated workpiece and extrusion ratio prepare blank (2);
B. blank (2) is heated;
C. mould, 300 ℃ of preheat temperatures are also lubricated in preheating;
D. blank (2) is placed horizontally in the die (3), punch (1) is with the extrusion speed extrusion billet (2) of 1～10mm/s; Blank (2) from the import of die (3) enter and successively the feed zone (4) by die (3), preceding profiled section (5), profiled section (6), aftershaping section (7) and discharging section (8), make blank (2) become oval cross section, become the circular section by oval cross section again by the circular section;
E. when blank (2) passes through the feed zone (4) of die (3) fully, withdraw from punch (1); From the outlet of die (3) adopt Hubbing method make blank (2) continue by die (3) preceding moulding (5) section, profiled section (6), aftershaping section (6) and discharging section (8) distortion, be shaped to prefabricated workpiece at last;
F. take out prefabricated workpiece and cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100213717A CN101823085B (en) | 2009-03-04 | 2009-03-04 | Variable-channel extrusion die and forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100213717A CN101823085B (en) | 2009-03-04 | 2009-03-04 | Variable-channel extrusion die and forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101823085A true CN101823085A (en) | 2010-09-08 |
| CN101823085B CN101823085B (en) | 2011-11-16 |
Family
ID=42687369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100213717A Expired - Fee Related CN101823085B (en) | 2009-03-04 | 2009-03-04 | Variable-channel extrusion die and forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101823085B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430609A (en) * | 2011-11-04 | 2012-05-02 | 西北工业大学 | Equal-passage variable-cross-section extruding mold and extrusion forming method for pipes |
| CN103447341A (en) * | 2013-08-27 | 2013-12-18 | 西北工业大学 | Equal-channel extrusion mold for forming powder superalloy blank |
| CN103801576A (en) * | 2014-03-05 | 2014-05-21 | 西北工业大学 | Variable-channel mold for improving drawing toughness of steel bar |
| CN104226711A (en) * | 2014-10-09 | 2014-12-24 | 太原理工大学 | Extrusion die with multiple corners and forming method thereof |
| CN105269281A (en) * | 2015-11-30 | 2016-01-27 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of upsetting-extruding and molding mold for internal T-shaped ring part blank |
| CN106984665A (en) * | 2017-05-25 | 2017-07-28 | 天津工业大学 | A kind of off-axis rotation extruding mold and its moulding material method |
| CN107243583A (en) * | 2017-07-24 | 2017-10-13 | 长安大学 | A kind of continuous variation ellipse section roll milling apparatus and blank-making method |
| CN108435817A (en) * | 2018-05-18 | 2018-08-24 | 西京学院 | A kind of bar extruding mold and its application method |
| CN108555055A (en) * | 2018-04-27 | 2018-09-21 | 哈尔滨理工大学 | A kind of compound crowded torsion building mortion of variable conduit and method |
| CN109675948A (en) * | 2019-01-07 | 2019-04-26 | 哈尔滨理工大学 | A kind of high-strength high-toughness magnesium alloy variable conduit squeezes and Rolling compund molding machine and method |
| CN110695157A (en) * | 2019-10-22 | 2020-01-17 | 浙江申吉钛业股份有限公司 | Method for bending titanium alloy thin-walled tube sharply |
| CN110976855A (en) * | 2019-11-01 | 2020-04-10 | 昆明理工大学 | Method for simultaneously improving strength and plasticity of titanium material |
| CN112620372A (en) * | 2020-12-23 | 2021-04-09 | 太原理工大学 | Mold and method for preparing magnesium alloy plate strip with weak basal plane texture by continuous differential extrusion |
| CN113523146A (en) * | 2021-07-29 | 2021-10-22 | 襄阳航泰动力机器厂 | Manufacturing device for high-temperature alloy steel belt wrapped braided rope structure air sealing ring |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5522246A (en) * | 1995-04-19 | 1996-06-04 | U.S. Manufacturing Corporation | Process for forming light-weight tublar axles |
| JP2000167619A (en) * | 1998-12-03 | 2000-06-20 | Daido Steel Co Ltd | Extruding die, and extruding method |
| CN100482370C (en) * | 2007-07-03 | 2009-04-29 | 江阴市江顺模具有限公司 | Multi- structure motor enclosure aluminium alloy hot-extrusion die |
| CN201371172Y (en) * | 2009-03-04 | 2009-12-30 | 西北工业大学 | Channel-changing extrusion die |
-
2009
- 2009-03-04 CN CN2009100213717A patent/CN101823085B/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430609B (en) * | 2011-11-04 | 2013-10-16 | 西北工业大学 | Equal-passage variable-cross-section extruding mold and extrusion forming method for pipes |
| CN102430609A (en) * | 2011-11-04 | 2012-05-02 | 西北工业大学 | Equal-passage variable-cross-section extruding mold and extrusion forming method for pipes |
| CN103447341A (en) * | 2013-08-27 | 2013-12-18 | 西北工业大学 | Equal-channel extrusion mold for forming powder superalloy blank |
| CN103801576A (en) * | 2014-03-05 | 2014-05-21 | 西北工业大学 | Variable-channel mold for improving drawing toughness of steel bar |
| CN103801576B (en) * | 2014-03-05 | 2015-10-28 | 西北工业大学 | A kind of variable conduit mould improving reinforcing bar draw ductility |
| CN104226711A (en) * | 2014-10-09 | 2014-12-24 | 太原理工大学 | Extrusion die with multiple corners and forming method thereof |
| CN104226711B (en) * | 2014-10-09 | 2016-07-06 | 太原理工大学 | A kind of many angular extrusion dies and manufacturing process |
| CN105269281A (en) * | 2015-11-30 | 2016-01-27 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of upsetting-extruding and molding mold for internal T-shaped ring part blank |
| CN106984665A (en) * | 2017-05-25 | 2017-07-28 | 天津工业大学 | A kind of off-axis rotation extruding mold and its moulding material method |
| CN107243583B (en) * | 2017-07-24 | 2019-03-12 | 长安大学 | A kind of continuous variation ellipse section roll milling apparatus and blank-making method |
| CN107243583A (en) * | 2017-07-24 | 2017-10-13 | 长安大学 | A kind of continuous variation ellipse section roll milling apparatus and blank-making method |
| CN108555055A (en) * | 2018-04-27 | 2018-09-21 | 哈尔滨理工大学 | A kind of compound crowded torsion building mortion of variable conduit and method |
| CN108435817A (en) * | 2018-05-18 | 2018-08-24 | 西京学院 | A kind of bar extruding mold and its application method |
| CN109675948A (en) * | 2019-01-07 | 2019-04-26 | 哈尔滨理工大学 | A kind of high-strength high-toughness magnesium alloy variable conduit squeezes and Rolling compund molding machine and method |
| CN110695157A (en) * | 2019-10-22 | 2020-01-17 | 浙江申吉钛业股份有限公司 | Method for bending titanium alloy thin-walled tube sharply |
| CN110976855A (en) * | 2019-11-01 | 2020-04-10 | 昆明理工大学 | Method for simultaneously improving strength and plasticity of titanium material |
| CN112620372A (en) * | 2020-12-23 | 2021-04-09 | 太原理工大学 | Mold and method for preparing magnesium alloy plate strip with weak basal plane texture by continuous differential extrusion |
| CN112620372B (en) * | 2020-12-23 | 2022-05-24 | 太原理工大学 | Mold and method for preparing weak basal plane texture magnesium alloy plate strip through continuous differential extrusion |
| CN113523146A (en) * | 2021-07-29 | 2021-10-22 | 襄阳航泰动力机器厂 | Manufacturing device for high-temperature alloy steel belt wrapped braided rope structure air sealing ring |
| CN113523146B (en) * | 2021-07-29 | 2023-12-01 | 襄阳航泰动力机器厂 | Manufacturing device for high-temperature alloy steel belt wrapped braided rope structure seal balloon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101823085B (en) | 2011-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101823085B (en) | Variable-channel extrusion die and forming method | |
| CN101850376B (en) | Method and die for forward extrusion and variable diameter bending extrusion of magnesium alloy semi-solid billets | |
| CN104759850B (en) | A kind of aluminium alloy height barrier part processing technique | |
| CN105880310B (en) | A kind of mould and forming method of the hollow magnesium alloy profiles of Ultra-fine Grained | |
| CN104607580A (en) | Forging forming technology of aluminum alloy straight-flanked ring with extra-large specification | |
| CN106140852B (en) | A kind of high-strength tenacity fine grain light-alloy tubing prepares mould and preparation method thereof | |
| JP2014514167A (en) | Hot extrusion method for making metal parts, extrusion tool for carrying out the method, and landing gear rod made by the method | |
| CN104162555A (en) | Semi-solid thixotropic-plastic compound forming method | |
| CN201371172Y (en) | Channel-changing extrusion die | |
| CN102345035A (en) | Production process for titanium and nickel shape memory alloy material | |
| CN106890917A (en) | Super large ratio of height to diameter steel billet upset forging process and equipment | |
| CN108517477A (en) | A kind of ultra-fine crystallization gradient control method of depth taper copper conic liner tissue | |
| CN104722689A (en) | Large size aluminum alloy keelblook homogenization forging improving method | |
| Zhang et al. | Recent research and development on forming for large magnesium alloy components with high mechanical properties | |
| CN110961872B (en) | Preparation method of large-size titanium alloy seamless deep-hole cylinder | |
| CN106544608B (en) | A kind of manufacturing process of the thick fine grain magnesium alloy with high strength and ductility forging of spy | |
| CN112475180A (en) | Forging die and method for step shaft type forge piece | |
| CN114653770B (en) | Spiral reducing-continuous torsion extrusion die for magnesium alloy high-performance plate | |
| CN114589284B (en) | One-fire cogging die and method for alloy bar stock and upsetting-extruding-upsetting large deformation method | |
| CN115401146A (en) | Forging forming die and forming method for hollow step shaft | |
| Liu et al. | Microstructural analysis and mechanical properties of AZ31 magnesium alloy prepared by alternate extrusion (AE) | |
| CN108006198A (en) | New-energy automobile reducer gear axis and its manufacturing process | |
| CN104046863A (en) | Preparation method of large width-to-thickness ratio and ultrahigh strength and toughness aluminum alloy sheet | |
| CN108637155B (en) | Bolt production mold, production method and manufactured bolt | |
| CN101049630B (en) | Continuous casting product line process flow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20140304 |