CN102069103A - Plastic processing method for magnesium alloy capillary tube - Google Patents
Plastic processing method for magnesium alloy capillary tube Download PDFInfo
- Publication number
- CN102069103A CN102069103A CN 201010564653 CN201010564653A CN102069103A CN 102069103 A CN102069103 A CN 102069103A CN 201010564653 CN201010564653 CN 201010564653 CN 201010564653 A CN201010564653 A CN 201010564653A CN 102069103 A CN102069103 A CN 102069103A
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- extrusion
- capillary
- extrusion die
- processing method
- 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.)
- Pending
Links
Abstract
The invention relates to a plastic processing method for a magnesium alloy capillary tube, which comprises the following steps: heating a magnesium alloy casting billet to 100-300 DEG C, pre-heating a rod extrusion die to 300-450 DEG C, performing extrusion, controlling the extrusion ratio to be 10-25 and controlling the extrusion speed to be 20-30mm/s; intercepting a magnesium alloy rod with the length of 10-50mm after annealing, and processing into a tube blank; placing the tube blank into a divided flow extrusion die for extrusion under the conditions that the extrusion temperature is 100-300 DEG C, the extrusion ratio is 16-64 and the speed of a punch head of the extrusion die is 20-30mm/s, and getting the capillary tube with the wall thickness of 0.1-0.5mm and the length of 300-1000mm; and then performing destressing annealing treatment and getting the magnesium alloy capillary tube. The process is simple, the cost is low, the processing efficiency is high, the manufactured magnesium alloy capillary tube has good surface quality, the tube wall thickness is uniform, the flatness is ideal, structure is uniform, the mechanical properties are higher, and the plastic processing method can be used for manufacturing a stent in blood vessel.
Description
Technical field
The present invention relates to a kind of plastic processing method of metal capillary, specifically a kind of magnesium alloy plastic processing method capillaceous.The magnesium alloy capillary of processing can be used for making the biodegradable endovascular stent.
Background technology
We know that magnesium alloy becomes the degradable medical coronary artery bracket material of main flow just gradually and obtains country's attention and support owing to have excellent biological compatibility, degradability and good mechanical performance.In March, 2009, German Biotronik company takes the lead in having released biological absorbable metal magnesium bracket, and I phase clinical trial effect is being carried out fairly large clinical testing certainly at present.And the domestic obstacle of carrying out this clinical maximum at present is exactly the shaping capillaceous of magnesium alloy with high strength and ductility thin-walled.Support adopts precision optical machinery processing as the preparation of methods such as line cutting with the magnesium alloy tubule is main at present, prepares not only that length of material is limited, wall unevenness even, glacing flatness is poor, and performance is low, extremely difficultly carries out laser engraving and is bent into clinical medical coronary artery bracket; The most important thing is wall thickness 0.1～0.2mm, external diameter 1.0～3.0mm, the preparation that length surpasses the magnesium alloy capillary tubular goods of 300mm but gets into a difficult position.Xibei Inst. of Non-Ferrous Metals carries out hollow drawing of multi-pass temperature attitude or belt carcass drawing in the great waves that shake etc. to the magnesium alloy pipe, obtains external diameter less than Φ 6mm Mg alloy thin wall pipe.Shenyang University of Technology carries out the multi-pass drawing in precious justice etc. to the magnesium alloy pipe, obtains the Mg alloy thin wall pipe of external diameter less than Φ 10mm.Although above-mentioned patent has comparatively at large been described forming technology, the influence to magnesium alloy tissue and the final serviceability of material then relates to seldom for technology itself.This technology exists drawing passes many, the material surface oxidation, and surface quality is poor, is prone to deficiencies such as disconnected pipe phenomenon; Wayward wall thickness, tube wall is inhomogeneous, and glacing flatness is also not ideal enough; The material obdurability is lower, and this adds at follow-up laser engraving and fragilely splits or bend time fracture man-hour, causes product rejection; Particularly crucial is that this technology is difficult to prepare high-fineness ratio magnesium alloy with high strength and ductility capillary, can't carry out following process and become the clinical magnesium alloy blood vessel inner bracket of using.
Summary of the invention
Technical problem to be solved by this invention is that magnesium alloy capillary intensity is low in the prior art, plasticity is poor, tube wall is inhomogeneous in order to overcome, the dissatisfactory deficiency of glacing flatness, provide a kind of technology simple, cost is low, the working (machining) efficiency height, the magnesium alloy capillary surface quality of making is good, even tube wall, the magnesium alloy plastic processing method capillaceous that glacing flatness is desirable.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of magnesium alloy plastic processing method capillaceous, it is characterized in that may further comprise the steps: (1) is at first with AZ31 magnesium alloy cast blank heating to 100～300 ℃, be incubated 0.5～1 hour, pre-hot bar material extrusion die to 300～450 ℃, then AZ31 magnesium alloy cast blank being put into the bar extrusion die pushes, extrusion ratio 10～25, extrusion speed 20～30mm/s obtains Φ 10.4～Φ 16 magnesium alloy rods; (2) magnesium alloy rod that extruding is obtained carries out 0.5～2 hour annealing in process in 220～420 ℃ of scopes; (3) with the long pipe that is processed into of magnesium alloy rod intercepting 10～50mm after the above-mentioned annealing, as extruding capillary blank; (4) pipe in the above-mentioned steps (3) being put into the shunting extrusion die pushes, extrusion temperature is 100～300 ℃, extrusion ratio is 16～64, extrusion die drift speed is to push under the condition of 20～30mm/s, obtaining outside dimension is Φ 2～Φ 4mm, wall thickness is 0.1～0.5mm, and length is the capillary of 300～1000mm; (5) stress relief annealing of the capillary in the above-mentioned steps (4) being carried out in 220～420 ℃ of scopes 0.5～2 hour is handled, and obtains the magnesium alloy capillary.
The present invention adopts above-mentioned processing step, can once-forming processing magnesium alloy capillary, against existing technologies, technology of the present invention is simple, cost is low, the working (machining) efficiency height, and the magnesium alloy capillary surface quality of processing and fabricating is good, pipe thickness is even, the glacing flatness ideal, its even tissue and mechanical property are higher, and room temperature tensile strength is 190～290MPa, yield strength 120～180MPa, percentage elongation: 25～32%; The most important thing is that the magnesium alloy capillary slenderness ratio that obtains is big, as outside dimension Φ 2～Φ 4mm, wall thickness 0.1～0.5mm, length is 300～1000 mm, following process, bending are conveniently.The magnesium alloy capillary that the present invention makes is under inert gas shielding; process out surface quality and the high medical degradable magnesium alloy capillary inner support blank of dimensional accuracy by laser engraving; mixed solution with acetone and absolute ethyl alcohol carries out the sonic oscillation cleaning to the support blank; vacuumize encapsulation, make obtaining the biodegradable endovascular stent.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1: a kind of magnesium alloy plastic processing method capillaceous, it may further comprise the steps: (1) at first selects for use casting purity greater than 99.99% AZ31 magnesium alloy blank, the AZ31 magnesium alloy cast blank of Φ 52 * 50mm is put into stove be heated to 100 ℃, be incubated 0.5 hour, pre-hot bar material extrusion die to 450 ℃ is then put into the bar extrusion die with AZ31 magnesium alloy cast blank and is pushed, extrusion ratio 10.6, extrusion speed 20mm/s obtains the extruded bar from magnesium alloy of Φ 16.In order to reduce friction, the die endoporus of extrusion die is taked the oil base graphite lubrication in the extrusion process.(2) magnesium alloy rod that extruding is obtained carries out 2 hours annealing in process in 220 ℃ of scopes; (3) with the long pipe that is processed into of magnesium alloy rod intercepting 10～50mm after the above-mentioned annealing, as extruding capillary blank; (4) pipe in the above-mentioned steps (3) is put into the shunting extrusion die and pushed, extrusion temperature is 300 ℃, and extrusion ratio is 16, extrusion die drift speed is to push under the condition of 30mm/s, obtaining outside dimension is Φ 4mm, and wall thickness is 0.5mm, and length is the capillary of 300 mm; (5) stress relief annealing of the capillary in the above-mentioned steps (4) being carried out in 220 ℃ of scopes 2 hours is handled, and obtains the magnesium alloy capillary.
Technology of the present invention is simple, cost is low, the working (machining) efficiency height, the magnesium alloy capillary surface quality of processing and fabricating is good, and pipe thickness is even, the glacing flatness ideal, the efficient height, its even tissue and mechanical property are higher, and room temperature tensile strength is 190～290MPa, yield strength 120～180MPa, percentage elongation: 25～32%.Can be used to make medical degradable magnesium alloy capillary inner support.
Embodiment 2: a kind of magnesium alloy plastic processing method capillaceous, it may further comprise the steps: (1) at first selects for use casting purity greater than 99.99% AZ31 magnesium alloy blank, the AZ31 magnesium alloy cast blank of Φ 52 * 50mm is put into stove be heated to 200 ℃, be incubated 0.8 hour, pre-hot bar material extrusion die to 350 ℃ is then put into the bar extrusion die with AZ31 magnesium alloy cast blank and is pushed, extrusion ratio 16, extrusion speed 26mm/s obtains the extruded bar from magnesium alloy of Φ 13.In order to reduce friction, the die endoporus of extrusion die is taked the oil base graphite lubrication in the extrusion process.(2) magnesium alloy rod that extruding is obtained carries out 1 hour annealing in process in 300 ℃ of scopes; (3) with the long pipe that is processed into of magnesium alloy rod intercepting 10～50mm after the above-mentioned annealing, as extruding capillary blank; (4) pipe in the above-mentioned steps (3) is put into the shunting extrusion die and pushed, extrusion temperature is 200 ℃, and extrusion ratio is 28, extrusion die drift speed is to push under the condition of 26mm/s, obtaining outside dimension is Φ 3mm, and wall thickness is 0.2mm, and length is the capillary of 700 mm; (5) stress relief annealing of the capillary in the above-mentioned steps (4) being carried out in 300 ℃ of scopes 1 hour is handled, and obtains the magnesium alloy capillary.
The magnesium alloy capillary surface quality of present embodiment processing and fabricating is good, and pipe thickness is even, the glacing flatness ideal, the efficient height, its even tissue and mechanical property are higher, and room temperature tensile strength is 190～290MPa, yield strength 120～180MPa, percentage elongation: 25～32%.Can be used to make medical degradable magnesium alloy capillary inner support.
Embodiment 3: a kind of magnesium alloy plastic processing method capillaceous, it may further comprise the steps: (1) is at first put into stove with the AZ31 magnesium alloy cast blank of Φ 52 * 50mm and is heated to 300 ℃, be incubated 1 hour, pre-hot bar material extrusion die to 300 ℃, then AZ31 magnesium alloy cast blank being put into the bar extrusion die pushes, extrusion ratio 25, extrusion speed 30mm/s obtains the extruded bar from magnesium alloy of Φ 10.4.In order to reduce friction, the die endoporus of extrusion die is taked the oil base graphite lubrication in the extrusion process.(2) magnesium alloy rod that extruding is obtained carries out 0.5 hour annealing in process in 420 ℃ of scopes; (3) with the long pipe that is processed into of magnesium alloy rod intercepting 10～50mm after the above-mentioned annealing, as extruding capillary blank; (4) pipe in the above-mentioned steps (3) is put into the shunting extrusion die and pushed, extrusion temperature is 100 ℃, and extrusion ratio is 64, extrusion die drift speed is to push under the condition of 30mm/s, obtaining outside dimension is Φ 2mm, and wall thickness is 0.1mm, and length is the capillary of 1000 mm; (5) stress relief annealing of the capillary in the above-mentioned steps (4) being carried out in 420 ℃ of scopes 0.5 hour is handled, and obtains the magnesium alloy capillary.
The magnesium alloy capillary surface quality of present embodiment processing and fabricating is good, and pipe thickness is even, the glacing flatness ideal, the efficient height, its even tissue and mechanical property are higher, and room temperature tensile strength is 190～290MPa, yield strength 120～180MPa, percentage elongation: 25～32%.Can be used to make medical degradable magnesium alloy capillary inner support.
Claims (2)
1. magnesium alloy plastic processing method capillaceous, it is characterized in that may further comprise the steps: (1) is at first with AZ31 magnesium alloy cast blank heating to 100～300 ℃, be incubated 0.5～1 hour, pre-hot bar material extrusion die to 300～450 ℃, then AZ31 magnesium alloy cast blank being put into the bar extrusion die pushes, extrusion ratio 10～25, extrusion speed 20～30mm/s obtains Φ 10.4～Φ 16 magnesium alloy rods; (2) magnesium alloy rod that extruding is obtained carries out 0.5～2 hour annealing in process in 220～420 ℃ of scopes; (3) with the long pipe that is processed into of magnesium alloy rod intercepting 10～50mm after the above-mentioned annealing, as extruding capillary blank; (4) pipe in the above-mentioned steps (3) being put into the shunting extrusion die pushes, extrusion temperature is 100～300 ℃, extrusion ratio is 16～64, extrusion die drift speed is to push under the condition of 20～30mm/s, obtaining outside dimension is Φ 2～Φ 4mm, wall thickness is 0.1～0.5mm, and length is the capillary of 300～1000mm; (5) stress relief annealing of the capillary in the above-mentioned steps (4) being carried out in 200～420 ℃ of scopes 0.5～2 hour is handled, and obtains the magnesium alloy capillary.
2. magnesium alloy according to claim 1 plastic processing method capillaceous is characterized in that the die endoporus of extrusion die in the described step (1) is taked the oil base graphite lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010564653 CN102069103A (en) | 2010-11-30 | 2010-11-30 | Plastic processing method for magnesium alloy capillary tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010564653 CN102069103A (en) | 2010-11-30 | 2010-11-30 | Plastic processing method for magnesium alloy capillary tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102069103A true CN102069103A (en) | 2011-05-25 |
Family
ID=44027980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010564653 Pending CN102069103A (en) | 2010-11-30 | 2010-11-30 | Plastic processing method for magnesium alloy capillary tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102069103A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231040A (en) * | 2013-04-27 | 2013-08-07 | 暨南大学 | Semisolid extrusion and thixomolding mould and method for degradable magnesium alloy micro cautery |
| CN103334070A (en) * | 2013-06-24 | 2013-10-02 | 中国科学院金属研究所 | Method for improving usability of biomedical degradable magnesium alloy cardiovascular stent |
| CN103706666A (en) * | 2013-12-27 | 2014-04-09 | 常熟致圆微管技术有限公司 | Manufacturing method of medical high-purity magnesium tube of ultra-fine grains |
| CN105964716A (en) * | 2016-05-11 | 2016-09-28 | 郑州大学 | One-step forming processing method of magnesium alloy small-diameter thin-wall capillary tube used for vascular stent |
| CN110117743A (en) * | 2019-05-24 | 2019-08-13 | 珠海中科先进技术研究院有限公司 | A kind of corrosion-proof and high-strength tough magnesium alloy tubing and preparation process |
| CN111571128A (en) * | 2020-05-07 | 2020-08-25 | 沪创医疗科技（上海）有限公司 | Preparation method of biodegradable superfine crystal magnesium alloy intravascular stent |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10230553A1 (en) * | 2002-07-05 | 2004-04-01 | Universität Hannover | Extruding process for extruding magnesium profiles comprises feeding a cylindrical profile into a feed channel, and pressing through a die using a stamp with plastic deformation directly before the die across the moving direction |
| CN101085377A (en) * | 2007-06-11 | 2007-12-12 | 沈阳工业大学 | Process for forming magnesium alloy ultra-fine thin-wall tube used for degradable blood vessel bracket |
| CN101357089A (en) * | 2008-09-12 | 2009-02-04 | 西北有色金属研究院 | Production method of biology degradable magnesium alloy vascular inner rack |
| JP2009172657A (en) * | 2008-01-25 | 2009-08-06 | National Institute Of Advanced Industrial & Technology | High-performance magnesium alloy member and method of manufacturing it |
| CN101658691A (en) * | 2009-07-31 | 2010-03-03 | 哈尔滨工业大学 | Method for plastically manufacturing high-purity magnesium alloy absorbable stent |
| CN101722209A (en) * | 2009-11-26 | 2010-06-09 | 于洋 | Preparation method of large slenderness ratio and high-toughness magnesium alloy capillary |
-
2010
- 2010-11-30 CN CN 201010564653 patent/CN102069103A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10230553A1 (en) * | 2002-07-05 | 2004-04-01 | Universität Hannover | Extruding process for extruding magnesium profiles comprises feeding a cylindrical profile into a feed channel, and pressing through a die using a stamp with plastic deformation directly before the die across the moving direction |
| CN101085377A (en) * | 2007-06-11 | 2007-12-12 | 沈阳工业大学 | Process for forming magnesium alloy ultra-fine thin-wall tube used for degradable blood vessel bracket |
| JP2009172657A (en) * | 2008-01-25 | 2009-08-06 | National Institute Of Advanced Industrial & Technology | High-performance magnesium alloy member and method of manufacturing it |
| CN101357089A (en) * | 2008-09-12 | 2009-02-04 | 西北有色金属研究院 | Production method of biology degradable magnesium alloy vascular inner rack |
| CN101658691A (en) * | 2009-07-31 | 2010-03-03 | 哈尔滨工业大学 | Method for plastically manufacturing high-purity magnesium alloy absorbable stent |
| CN101722209A (en) * | 2009-11-26 | 2010-06-09 | 于洋 | Preparation method of large slenderness ratio and high-toughness magnesium alloy capillary |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231040A (en) * | 2013-04-27 | 2013-08-07 | 暨南大学 | Semisolid extrusion and thixomolding mould and method for degradable magnesium alloy micro cautery |
| CN103231040B (en) * | 2013-04-27 | 2015-09-09 | 暨南大学 | The micro cautery of degradable magnesium alloy microcapillary and method |
| CN103334070A (en) * | 2013-06-24 | 2013-10-02 | 中国科学院金属研究所 | Method for improving usability of biomedical degradable magnesium alloy cardiovascular stent |
| CN103334070B (en) * | 2013-06-24 | 2016-01-13 | 中国科学院金属研究所 | Improve biological medical degradable magnesium alloy angiocarpy bracket use properties method |
| CN103706666A (en) * | 2013-12-27 | 2014-04-09 | 常熟致圆微管技术有限公司 | Manufacturing method of medical high-purity magnesium tube of ultra-fine grains |
| CN103706666B (en) * | 2013-12-27 | 2015-10-28 | 常熟致圆微管技术有限公司 | The medical high purity magnesium pipe manufacturing method of a kind of ultra-fine grain |
| CN105964716A (en) * | 2016-05-11 | 2016-09-28 | 郑州大学 | One-step forming processing method of magnesium alloy small-diameter thin-wall capillary tube used for vascular stent |
| 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 |
| CN110117743A (en) * | 2019-05-24 | 2019-08-13 | 珠海中科先进技术研究院有限公司 | A kind of corrosion-proof and high-strength tough magnesium alloy tubing and preparation process |
| CN110117743B (en) * | 2019-05-24 | 2020-08-11 | 珠海中科先进技术研究院有限公司 | Corrosion-resistant high-strength toughness magnesium alloy pipe and preparation process thereof |
| CN111571128A (en) * | 2020-05-07 | 2020-08-25 | 沪创医疗科技（上海）有限公司 | Preparation method of biodegradable superfine crystal magnesium alloy intravascular stent |
| CN111571128B (en) * | 2020-05-07 | 2022-07-05 | 沪创医疗科技（上海）有限公司 | Preparation method of biodegradable superfine crystal magnesium alloy intravascular stent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102069103A (en) | Plastic processing method for magnesium alloy capillary tube | |
| CN103394545B (en) | The precision machining method of biodegradable magnesium alloy intravascular stent capillary | |
| US9227235B2 (en) | Method for producing a small thin-walled tube from a magnesium alloy | |
| Wang et al. | Processing and properties of magnesium alloy micro-tubes for biodegradable vascular stents | |
| Wang et al. | Processing of a novel Zn alloy micro-tube for biodegradable vascular stent application | |
| US10077492B2 (en) | Ultrafine-grained profile of twin-crystal wrought magnesium alloys, preparation process and use of the same | |
| CN101085377B (en) | Process for forming magnesium alloy ultra-fine thin-wall tube used for degradable blood vessel bracket | |
| CN103170516B (en) | The short process making method of a kind of magnesium or magnesium alloy capillary | |
| CN101722209B (en) | Preparation method of large slenderness ratio and high-toughness magnesium alloy capillary | |
| CN101322985B (en) | Warm state drawing method for processing medical magnesium alloy fine-radial thin-wall pipes | |
| CN103789711B (en) | A kind of preparation method of medical bio degradable zinc alloy capillary tubes | |
| CN105964716B (en) | One-step forming processing method of magnesium alloy thin-walled capillary tube for intravascular stent | |
| CN106825110B (en) | A kind of method for processing forming of intravascular stent kirsite thin footpath thin-walled capillary tubing | |
| Wang et al. | Forming of magnesium alloy microtubes in the fabrication of biodegradable stents | |
| CN102345035B (en) | Production process for titanium and nickel shape memory alloy material | |
| CN103706666B (en) | The medical high purity magnesium pipe manufacturing method of a kind of ultra-fine grain | |
| CN105506525A (en) | Preparation method of Ti2AlNb-based alloy large-size uniform fine-grain bar | |
| CN105349829A (en) | Titanium alloy Ti80 seamless tube and preparation method thereof | |
| TWI279446B (en) | The method for producing magnesium alloy molding | |
| CN108637033A (en) | A method of preparing titanium alloy capillary tubes | |
| RU2018130134A (en) | NICKEL-BASED ALLOY PIPES AND METHOD FOR PRODUCING THEM | |
| CN105478523A (en) | Preparation technology for medical beta type titanium alloy capillary tubes | |
| CN111571128B (en) | Preparation method of biodegradable superfine crystal magnesium alloy intravascular stent | |
| CN107838222B (en) | The preparation method and applications of biological medical degradable kirsite capillary tubes | |
| RU2644714C2 (en) | Method for manufacturing rods of titanium based alloys |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110525 |