CN107350305B - A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube - Google Patents
A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube Download PDFInfo
- Publication number
- CN107350305B CN107350305B CN201710548593.9A CN201710548593A CN107350305B CN 107350305 B CN107350305 B CN 107350305B CN 201710548593 A CN201710548593 A CN 201710548593A CN 107350305 B CN107350305 B CN 107350305B
- Authority
- CN
- China
- Prior art keywords
- die holder
- punch
- pin
- alloy thin
- extruding
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube, step: (1), rodlike blanking；(2), Homogenization Treatments；(3), cylindrical blank is put into Extruding die, is integrally put into heater box heat preservation, constant temperature squeezes out band bottom cup shell；(4), punch-pin exits extruding, and cup shell sticks on punch-pin with the backhaul of punch-pin, Extruding die is released, and is put into stretching circle, carries out being thinned for wall thickness to the cup shell squeezed out；(5), it by multi-drawing, carries out cutting bottom, obtains target tubing, complete a working cycles.The present invention is compared with traditional cold drawing forming tubular product, improve cross section deformation rate, positioning device can preferably keep the uniform of wall thickness simultaneously, thermal deformation improves the utilization rate of material, crystal grain has obtained significantly refining, use replaceable concave die device simultaneously, can be significantly easy workflow, do not need to take out product.
Description
Technical field
The present invention relates to Metal Forming technique and forming technique fields, in particular to High-performance Magnesium Rare-earth Alloys thin-walled
The forming and Strengthening and Toughening of pipe, and in particular to one kind is used for magnesium alloy materials extrusion stretching manufacturing process.
Background technique
With the fast development of economic technology, continuous improvement of people's living standards, various diseases also just come one after another.The heart
Vascular diseases are always one of the important diseases for threatening human health, and intravascular stent interventional therapy is because its wound is small, expense is low,
As the main means for the treatment of coronary heart disease, and the treatment of peripheral artery disease and the intracavitary disease of non-vascular has gradually been expanded to.
But traditional timbering material such as Ti-Ni alloy, stainless steel, cobalt-base alloys etc. is not biodegradable, longer-term persistence, leads in vivo
Cause there are about patient postoperative there is reangiostenosis.Magnesium alloy is as vascular stent material because receiving with biodegradability
More and more concerns, but magnesium alloy plasticity is poor, and cold machine-shaping is difficult, and the tubing that traditional hot extrusion mode processes is not
It is able to satisfy the requirement of bracket tubing.
There is certain development for the research of Mg alloy thin wall pipe both at home and abroad, Tsinghua University just adds multiple tracks with backward extrusion
The technique of secondary cold drawing has shaped outer diameter 3.14mm, the thin-wall tube of wall thickness 0.32mm.But cold drawing is limited in that material
It is lower that rate is received in the section of material.The researcher of Poland just with the forming technology for adding dieless drawing is squeezed, shapes outer diameter
Rate is received up to 60% in 3.0mm, the microcapillary of wall thickness 0.5mm, the section of dieless drawing.
Summary of the invention
The object of the present invention is to provide one kind by replacement cavity plate, realizes that backward extrusion and multi-pass isothermal stretch, produces
The microcapillary of wall thickness 0.3mm, reach promoted magnesium-alloy tube comprehensive performance high-performance magnesium-alloy thin-wall tube extrusion stretching at
Shape method.
In order to solve the problems existing in background technology, the present invention adopts the following technical scheme:
A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube, it is comprised the following steps:
(1), rodlike blanking；
(2), Homogenization Treatments；
(3), using a kind of extrusion stretching shaping dies of high-performance magnesium-alloy thin-wall tube, it includes upper die holder, punch-pin, tight
Gu nut, locating ring, lower die holder, Extruding die, upper die holder bottom is equipped with punch-pin, upper die holder by fastening nut coaxial vertical
Lower section is coaxially arranged with lower die holder, and setting positioning collar aperture on lower die holder, locating ring rides upon in positioning collar aperture, below positioning collar aperture
It is horizontally arranged with a " u "-shaped hole, Extruding die is equipped in the " u "-shaped hole, and Extruding die, locating ring are located at together with punch-pin
On one axis, cylindrical blank is put into Extruding die, is integrally put into heater box heat preservation, constant temperature squeezes out band bottom cup shell；
(4), punch-pin exits extruding, and cup shell sticks on punch-pin with the backhaul of punch-pin, by Extruding die from lower die holder
" u "-shaped hole in release, be put into stretching circle, being thinned for wall thickness carried out to the cup shell that squeezes out；
(5), it by multi-drawing, carries out cutting bottom, obtains target tubing, complete a working cycles.
Further, at least two stretching circle of stacking is put into (4) step to be stretched, each stretched next sample
Sampling carries out hardness or stretching test.
Further, the cooperation of stretching circle described in (4) step is all by each step for stretching circle bottom with next drawing
Stretch the groove completion at circle top；Each stretching circle feeding part uses bell shape, and discharging portion is similarly toroidal
Shape.
Further, punch-pin described in (3) step is "T"-shaped revolving body, is opened up used in replacement punch-pin on upper die holder
Sliding slot, opens a through-hole along longitudinal axis on punch-pin, and convex mould surface has a hole identical with through-hole diameter.
Further, there is cylindrical mold cavity in Extruding die described in (3) step, type chamber pattern draft is 1 °, is being squeezed
There is a step in the bottom end of cavity plate.
Further, upper die holder described in (3) step is the cylindrical upper die holder with " mouth " shape slot, outside upper die holder lower end
Wall is provided with screw thread, and upper mold seating face is uniform-distribution with bellmouth.
Further, the monnolithic case of lower die holder described in (3) step is obtained by "T"-shaped revolution, in the upper of lower die holder
The lateral " u "-shaped hole of half part setting, " u "-shaped hole bottom surface open up the groove to match with the step of Extruding die and stretching circle,
In lower die holder side, level opens up a circular hole, and the lower half portion of lower die holder opens up out rectangular through holes.
Further, locating ring described in (3) step is matched with lower die holder, is done "T"-shaped revolving body, is ridden over lower die holder
Positioning collar aperture in.
After adopting the above technical scheme, the invention has the following advantages:
The present invention improves cross section deformation rate, while positioning device can be more compared with traditional cold drawing forming tubular product
Good keeps the uniform of wall thickness, and thermal deformation improves the utilization rate of material, and crystal grain has obtained significantly refining, while using can
Replace concave die device, can be significantly easy workflow, do not need to take out product.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the product figure that extrusion stretching of the invention shapes；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the mold assembling schematic diagram of present invention installation Extruding die；
Fig. 4 is the mold assembling schematic diagram that present invention installation stretches circle；
Fig. 5 is the structural schematic diagram of convex mould of the present invention；
Fig. 6 is the structural schematic diagram of Extruding die in the present invention；
Fig. 7 is the structural schematic diagram that circle is stretched in the present invention；
Fig. 8 is the structural schematic diagram of upper die holder in the present invention；
Fig. 9 is the structural schematic diagram of lower die holder in the present invention；
The left view of Figure 10 Fig. 9；
Appended drawing reference:
1- upper die holder；2- punch-pin；3- fastening nut；4- locating ring；5- lower die holder；6- Extruding die；7- stretches circle.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right below in conjunction with specific embodiment
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are only to explain the present invention, and
It is not used in the restriction present invention.
Please refer to Fig. 1-Figure 10, by blank be ф 10mmX10mm it is rodlike for, shaping internal diameter is 6mm, and wall thickness is
For the Mg alloy thin wall pipe of 0.3mm, the step of illustrating the movement and experiment of mold.
The present embodiment mold assembly as shown in Figure 3, Figure 4, including upper die holder 1, punch-pin 2, fastening nut 3, locating ring 4,
Lower die holder 5, Extruding die 6 and stretching circle 7；1 bottom of upper die holder is equipped with punch-pin 2, upper die holder by 3 coaxial vertical of fastening nut
1 lower section is coaxially arranged with lower die holder 5, and setting positioning collar aperture 51 on lower die holder 5, locating ring 4 rides upon in positioning collar aperture 51, positioning
It is horizontally arranged with a " u "-shaped hole 52 below collar aperture 51, Extruding die 6 or several vertical piles are equipped in the " u "-shaped hole 52
Circle 7 is stretched, and Extruding die 6, locating ring 4 and stretching circle 7 are located on same axis with punch-pin 2；
As shown in figure 5, the punch-pin 2 is "T"-shaped revolving body, and it is more convenient when carrying out punch-pin 2 and replacing, in upper die holder
Sliding slot 11 used in replacement punch-pin 2 is opened up on 1, only will need to be used to fasten the fastening of punch-pin 2 on upper die holder 1 when replacing punch-pin 2
Nut 3 is backed out, and old punch-pin is released, and new punch-pin is put into；As shown in figure 5, opening one along longitudinal axis on punch-pin 2
A through-hole 21 is that the product after extrusion stretching is embraced and forms vacuum on punch-pin 2 in order to prevent, it is difficult to remove and design；It is simultaneously
There is a hole 22 identical with through-hole diameter on easy to exhaust, 2 surface of punch-pin；There is no the purpose of design work band 23 on punch-pin 2
It is as far as possible to stay in the product of backward extrusion on punch-pin 2, the drawing process after being carried out under the premise of not having to take out product,
It is simple and convenient.
As shown in fig. 6, the Extruding die 6 is plain cylindrical form Extruding die, inside there are cylindrical mold cavity 61, type chamber 61
Pattern draft is 1 °, has a step 62 in the bottom end of Extruding die 6, the purpose is to match Extruding die 6 with lower die holder 5
It closes, keeps uniform wall thickness.
As shown in Fig. 7, Fig. 4, the effect of the stretching circle 7 is to keep wall thickness deflection, and stretching circle 7 can be one
A or multiple stretching circles 71,72,73 stack to complete object of experiment, but are put into a stretching circle too expense in lower die holder 5 every time
When it is laborious, therefore be designed as " build building blocks " formula drawing process, two can be carried out or triplets are put into " U " of lower die holder 5
In shape hole 52, stretching experiment is carried out, while permutation and combination can also be carried out, find best deformation process, then per together
Secondary be sampled observes its Microstructure Performance.The cooperation for wherein stretching circle 71,72,73 is all by each platform for stretching circle bottom
Rank 70 is completed with next groove 701 for stretching 72 top of circle；The feeding part 791,792,793 for stretching circle 71,72,73 is adopted
The forming being gradually reduced with bell shape, calibrating strap D1, D2, D3 size, discharging portion 781,782,783 are similarly horn mouth
Shape, then tensioning member from stretch circle 71 enter next stretchings circle 72, then from stretch circle 72 enter next stretching enclose 73, equally with
Backward extrusion process is identical.
As shown in figure 8, the upper die holder 1 is the cylindrical upper die holder with " mouth " shape slot, 1 lower end outer wall of upper die holder is set
It is equipped with screw thread 12, is designed to the mode of screw threads for fastening punch-pin, since the extruding force of forming is relatively small, to the ability to bear of mold
It is required that not being too high, and easy to loading and unloading；Upper mold seating face is also uniform-distribution with bellmouth (figure is not depending on showing) simultaneously, is used to upper mold
Seat 1 is fixed on extruder.
As shown in figure 9, the lower die holder 5 realizes the replaceability of Extruding die.The monnolithic case of lower die holder 5 be by
"T"-shaped revolution obtains, and in the lateral " u "-shaped hole 52 of the top half setting of lower die holder 5,52 bottom surface of " u "-shaped hole opens up and squeezes
Cavity plate 6 realizes the uniform of wall thickness with the groove 53 that the step for enclosing 7 matches is stretched.Replace Extruding die 6 for convenience simultaneously,
A circular hole 54 is opened up in 5 side level of lower die holder, and when replacement need to only be released Extruding die 6 with small pole.Due to stretching
When material it is identical with mold movement direction, so the lower half portion of lower die holder 5 opens up out rectangular through holes 55, facilitate observation shape and
Take out thin-wall tube.
As shown in Figure 3, Figure 4, the locating ring 4 is matched with lower die holder 5, due to thin-wall tube it is crucial that control wall
The accessible purpose of the design of locating ring 4: thickness (1) can control wall thickness；(2) it when punch-pin 2 passes through locating ring 4, can protect
Punch-pin 2 prevents because of unstability caused by punch-pin 2 is too long.At the same time, when replacing Extruding die 6, punch-pin 2 needs backhaul, because
This locating ring 4 cannot be interference fit, and be made as "T"-shaped revolving body, ride in the positioning collar aperture 51 of lower die holder 5, when convex
Locating ring 4 can be taken up when 2 backhaul of mould.
As shown in Figs 1-4, after the assembly is completed, what the first step carried out is backward extrusion process to mold, and test progress is isothermal
Extrusion process, i.e. experimentation carry out in heating furnace, test on universal testing machine.Blank 10 is put into mold before experiment
It is interior, heated together with mold, for 350 DEG C of experimental temperature, diameter be 6mm punch-pin 2 pass through locating ring 4 enter squeeze it is recessed
Carry out backward extrusion technology in mould 6, backward extrusion cup shell 101 is kept on file thick 3mm, and the product that wall thickness is 2mm is obtained.
Cup shell 101 is taken away in 2 backhaul of punch-pin, releases Extruding die 6, is put into stretching circle 7, stretches by 6 times, each stretching
The calibrating strap of circle 7 is having a size of ф 9mm, ф 8.4mm, ф 7.8mm, ф 7.2mm, ф 6.8mm, ф 6.6mm, can will be more when experiment
A 7 superposition of stretching circle uses, and finally obtains the band bottom magnesium alloy extruded tube 102 that wall thickness is 0.3mm.
Demoulding demoulds method using the temperature difference, that is, the temperature of heating furnace is improved 60 DEG C, due to the heat sensitivity of magnesium alloy, is risen
Warm speed will be faster than punch-pin 2, and further according to thermal expansion and contraction principle, the magnesium alloy extruded tube 102 bottom of with can be removed.
The excision of bottom 103 is obtained into Mg alloy thin wall pipe (figure does not regard out).
The concrete operation step of the present embodiment are as follows:
(1) rodlike blanking, having a size of ф 10mmX10mm；
(2) homogenization heat treatment；
(3) orthogonal test, the variable element of this experiment are designed are as follows: pushing speed, mold temperature, the selection of lubricant, because
To be isothermal experiment, thus the temperature of mold with blank be it is identical, 200 DEG C of design, 250 DEG C, 300 DEG C, 350 DEG C, 400 DEG C it is several
A temperature parameter；It pushes speed and selects 0.1mm/s, 0.5mm/s, 1mm/s；Lubricant selects oil machine graphite, talcum powder, carries out real
It tests, blank 10 will be got out and be put into the Extruding die 6 of mold, mold is put into the heater box of universal material experimental machine and is added
For heat to 350 DEG C, constant temperature squeezes out band bottom cup shell 101；
(4) Extruding die 6 is released, cup shell 101 sticks on punch-pin 2 with the backhaul of punch-pin 2, is put into stretching at this time
Circle 7 carries out being thinned for wall thickness to the cup shell 101 squeezed out；
(5) two or three stretching circles can be stacked to be stretched, each stretched equal sampling of next sample carries out hard
Degree or stretching test；
(6) by 6 stretchings, the magnesium alloy extruded tube 102 bottom of with is obtained, carries out cutting the processing of bottom 103, obtains target tube
Material completes a working cycles without the Mg alloy thin wall pipe at bottom, carries out microstructure observation, obtains mechanical property.
A kind of extrusion stretching forming of high-performance magnesium-alloy thin-wall tube of the invention adds cold with traditional thin-wall tube forward extrusion
Drawing forming compares, and has the advantages that
(1) traditional forward extrusion base is cumbersome, needs blank aperture, and due to the limitation of forward extrusion, experiment is needed
It to be carried out in horizontal extruder, or need designed, designed extruder, such as the design of Tsinghua University Fang Gang.And base of the present invention
Simply, easy to operate, it is adapted to more multi-environment, can be tested in universal material experimental machine.
(2) crystal grain more refines.Experiment of the invention have passed through multiple extrusion stretching, and crystal grain is obviously refined, and can obtain
Obtain high-densit structure.Traditional forward extrusion step is less, cannot achieve the effect that multi-pass squeezes.
(3) accurate positioning.This invention takes multiple positioning modes, guarantee the uniform of wall thickness.And traditional forward extrusion is determined
Position mode is relatively simple, be easy to cause the uneven of wall thickness or even fracture.
(4) forming effect is good.The present invention carries out at high temperature, and the deformation performance of magnesium alloy at high temperature is done than room temperature
Much, therefore deformation is more uniform, careful, and forming effect is preferable；Traditional forward extrusion forming, will generally obtain thin-wall tube needs
Carry out multi-pass cold drawing, the morphotropism of magnesium alloy is poor under low temperature, the phenomenon that easily breaking, at the same under low temperature material extension
Rate is lower.
(5) replaceable cavity plate.Traditional method and step is cumbersome, and the method for the replaceable cavity plate that the present invention uses is greatly
Shorten the process of experiment.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe, it is characterised in that: it is comprised the following steps:
(1), rodlike blanking；
(2), Homogenization Treatments；
(3), using a kind of extrusion stretching shaping dies of high-performance magnesium-alloy thin-wall tube, it includes upper die holder, punch-pin, fastening spiral shell
Mother, locating ring, lower die holder, Extruding die, upper die holder bottom are equipped with punch-pin, upper die holder lower section by fastening nut coaxial vertical
It is coaxially arranged with lower die holder, setting positioning collar aperture on lower die holder, locating ring rides upon in positioning collar aperture, below positioning collar aperture laterally
It is provided with a " u "-shaped hole, Extruding die is equipped in the " u "-shaped hole, and Extruding die, locating ring are located at same axis with punch-pin
On line, cylindrical blank is put into Extruding die, is integrally put into heater box heat preservation, constant temperature squeezes out band bottom cup shell；
(4), punch-pin exits extruding, and cup shell sticks on punch-pin with the backhaul of punch-pin, by Extruding die from lower die holder
It is released in " u "-shaped hole, is put into stretching circle, being thinned for wall thickness is carried out to the cup shell squeezed out；
(5), it by multi-drawing, carries out cutting bottom, obtains target tubing, complete a working cycles.
2. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (4) step
In be put into stacking at least two and stretch circle and stretched, it is each it is stretched come the equal sampling of sample carry out hardness or tensile property
Experiment.
3. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (4) step
Described in stretching circle cooperation all be by it is each stretch circle bottom step with it is next stretch circle top groove complete；Often
A stretching circle feeding part uses bell shape, and discharging portion is similarly bell shape.
4. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (3) step
Described in punch-pin be "T"-shaped revolving body, opened up on upper die holder replacement punch-pin used in sliding slot, along longitudinal axis on punch-pin
A through-hole vertically is opened, convex mould surface has a hole identical with through-hole diameter.
5. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (3) step
Described in Extruding die in have a cylindrical mold cavity, type chamber pattern draft is 1 °, has a step in the bottom end of Extruding die.
6. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (3) step
Described in upper die holder be the cylindrical upper die holder with " mouth " shape slot, upper die holder lower end outer wall is provided with screw thread, upper die holder table
Face is uniform-distribution with bellmouth.
7. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (3) step
Described in the monnolithic case of lower die holder be to be obtained by "T"-shaped revolution, in the lateral " u "-shaped of the top half setting of lower die holder
Hole, " u "-shaped hole bottom surface open up the groove to match with the step of Extruding die and stretching circle, and in lower die holder side, level opens up one
The lower half portion of circular hole, lower die holder opens up out rectangular through holes.
8. a kind of extrusion stretching manufacturing process of Mg alloy thin wall pipe as described in claim 1, it is characterised in that: (3) step
Described in locating ring matched with lower die holder, do "T"-shaped revolving body, ride in the positioning collar aperture of lower die holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710548593.9A CN107350305B (en) | 2017-07-03 | 2017-07-03 | A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710548593.9A CN107350305B (en) | 2017-07-03 | 2017-07-03 | A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107350305A CN107350305A (en) | 2017-11-17 |
| CN107350305B true CN107350305B (en) | 2019-04-02 |
Family
ID=60293218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710548593.9A Active CN107350305B (en) | 2017-07-03 | 2017-07-03 | A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107350305B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604359B (en) * | 2018-12-30 | 2020-05-26 | 中北大学 | Forming method for Mg-Gd-Y-Zn-Zr magnesium alloy bidirectional expansion equal-channel extrusion blank making |
| 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 |
| CN113059016B (en) * | 2021-03-16 | 2022-04-05 | 中北大学 | Thinning, stretching and extruding composite forming die for large-height-diameter ratio cylinder |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB744313A (en) * | 1953-03-02 | 1956-02-01 | Chesterfield Tube Company Ltd | The production of tubular steel junction pieces |
| JPH02220711A (en) * | 1989-02-21 | 1990-09-03 | Kawamura Seikan Kogyo Kk | Manufacture of copper capillary tube integrated with sleeve |
| CA2492603A1 (en) * | 2002-07-23 | 2004-01-29 | Zakrisdalsverken Aktiebolag | Method for manufacture of a metal shell, and a cup designed to serve as a blank |
| AT508309A1 (en) * | 2009-05-19 | 2010-12-15 | Arc Leichtmetallkompetenzzentrum Ranshofen Gmbh | METHOD FOR PRODUCING A THIN-WALLED TUBE FROM A MAGNESIUM ALLOY |
| CN101658691B (en) * | 2009-07-31 | 2013-03-13 | 哈尔滨工业大学 | Method for plastically manufacturing high-purity magnesium alloy absorbable stent |
| GB2512016A (en) * | 2012-09-24 | 2014-09-24 | Arterius Ltd | Methods |
| CN103331582B (en) * | 2013-07-04 | 2015-11-25 | 扬州大学 | A kind of method preparing metal thin-wall microtubule |
| CN103394545B (en) * | 2013-07-30 | 2015-09-16 | 沪创医疗科技（上海）有限公司 | The precision machining method of biodegradable magnesium alloy intravascular stent capillary |
| CN105964716B (en) * | 2016-05-11 | 2020-10-16 | 郑州大学 | One-step forming processing method of magnesium alloy thin-walled capillary tube for intravascular stent |
-
2017
- 2017-07-03 CN CN201710548593.9A patent/CN107350305B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107350305A (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107282678B (en) | A kind of extrusion stretching shaping dies of high-performance magnesium-alloy thin-wall tube | |
| CN107350305B (en) | A kind of extrusion stretching manufacturing process of high-performance magnesium-alloy thin-wall tube | |
| US9227235B2 (en) | Method for producing a small thin-walled tube from a magnesium alloy | |
| CN102345035B (en) | Production process for titanium and nickel shape memory alloy material | |
| CN103789711B (en) | A kind of preparation method of medical bio degradable zinc alloy capillary tubes | |
| CN102388157A (en) | Process for manufacturing magnesium alloy based products | |
| CN108580579A (en) | A kind of preparation method of medical magnesium alloy thin-wall pipes | |
| EP3530772A1 (en) | Plastic forming and toughening process method and apparatus based on ultrasonic vibration | |
| CN104789911B (en) | A kind of high undercooling processing method of thin brilliant copper alloy cavity liner | |
| CN106466694B (en) | A kind of shaper of memory alloy stent ring and processing method for shaping | |
| CN106734798A (en) | A kind of hot die forming manufacturing process of titanium matter cavity liner | |
| CN103706666B (en) | The medical high purity magnesium pipe manufacturing method of a kind of ultra-fine grain | |
| CN106583631A (en) | Near-isothermal forging formation method for TC4 titanium alloy hollow shaft neck forged piece | |
| CN106825110A (en) | A kind of intravascular stent method for processing forming of kirsite thin footpath thin-walled capillary tubing | |
| CN105964716A (en) | One-step forming processing method of magnesium alloy small-diameter thin-wall capillary tube used for vascular stent | |
| CN102429749A (en) | Novel processing method for biodegradable stent | |
| CN209886483U (en) | Thrust chamber forming die for rocket engine | |
| RU2012101226A (en) | DEVICE AND METHOD FOR FORMING BY ZONE EXTRACTION | |
| CN108262368A (en) | A kind of preparation method of high-performance medical magnesium alloy thin-wall pipes | |
| CN1686627A (en) | Sleeve pulling shaping method of nickel titanium base marmem pipe material | |
| CN108670830B (en) | Improve chinese-medicinal material boiling device of security performance | |
| CN104139105B (en) | Titanium pipe differential temperature shear bending and forming method and device | |
| CN102489709A (en) | Method for preparing endovascular stents | |
| CN108883263A (en) | Fine hollow bumps utensil | |
| CN115958078A (en) | Non-isothermal rapid extrusion forming method and device for high-entropy alloy thin-walled tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |