CN112246898A - Preparation method for Mg-Zn-Mn-Ca magnesium alloy micro-tube - Google Patents
Preparation method for Mg-Zn-Mn-Ca magnesium alloy micro-tube Download PDFInfo
- Publication number
- CN112246898A CN112246898A CN202011025209.5A CN202011025209A CN112246898A CN 112246898 A CN112246898 A CN 112246898A CN 202011025209 A CN202011025209 A CN 202011025209A CN 112246898 A CN112246898 A CN 112246898A
- Authority
- CN
- China
- Prior art keywords
- pipe
- tube
- magnesium alloy
- hole
- core rod
- 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
Images
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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
-
- 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
- B21C9/00—Cooling, heating or lubricating drawing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention belongs to the field of precision processing of non-ferrous metal materials, and particularly relates to a preparation method of a Mg-Zn-Mn-Ca magnesium alloy micro-tube. The magnesium alloy micro-fine pipe comprises the following components in percentage by mass: 4.00-4.25 wt.%, and Mn mass percent: 0.15-0.25 wt.%, Ca mass percent: 0.15 to 0.25 wt.%. The magnesium alloy micro-tube prepared by the method has the cross section diameter of 3.1-3.4 mm and the wall thickness of 0.25-0.40 mm. The preparation method comprises the following steps: (1) pretreating a magnesium alloy pipe blank; (2) drawing the tube blank for not less than 13-15 times to obtain the magnesium alloy micro-tube. The invention relates to hot drawing processing, wherein the first 7 times are blank drawing, and the last 6-8 times are movable long core rod drawing. The magnesium alloy micro-tube prepared by the method has the advantages of good surface quality, accurate size, uniform wall thickness (the wall difference rate is less than or equal to 2.00%) and excellent mechanical property. The invention has simple process, low equipment and processing cost and high processing efficiency, and can be produced in large batch.
Description
Technical Field
The invention belongs to the field of metal material precision machining, and particularly relates to a preparation method for a Mg-Zn-Mn-Ca magnesium alloy micro-tube.
Background
The magnesium resource on the earth is abundant, and the magnesium content in the crust is 2.77 percent, which is second to aluminum and iron. In recent years, with the increasing of magnesium yield, people have more and more intensive research on magnesium alloy, and a series of breakthroughs are made in the aspect of preparation and processing technology of magnesium alloy, so that the performance of the magnesium alloy is continuously improved, and the application of the magnesium alloy is greatly expanded. Magnesium alloys are the lightest metallic material in current applications. The composite material has the advantages of small density, high specific strength and specific rigidity, and excellent damping performance, electric conduction and heat conduction performance and electromagnetic shielding performance. In addition, magnesium is an important element necessary for human bodies, the density and the elastic modulus of magnesium and magnesium alloy are similar to those of human bones, magnesium can be degraded in human bodies, the characteristics promote the application of the magnesium in the field of biomedicine, and the magnesium can be used for preparing medical degradable in-vivo implants, such as bone nails, bone plates, vascular stents and the like.
The magnesium alloy pipe has wide application, and has application in the fields of aviation, aerospace, automobiles, electronic products, medical appliances and the like. However, there are some problems associated with the processing of magnesium alloy tubing, particularly with the processing of microtubes. The magnesium alloy has a close-packed hexagonal structure, and has less slippage system at room temperature, so that the plasticity is poor, the deformation processing is difficult, and the plastic processing technology of the magnesium alloy is not mature. The magnesium alloy micro-tube has smaller size and difficult forming, and cannot be produced by a common metal processing method. Therefore, in order to process a magnesium alloy microtube with a suitable size, a fine study on the forming process of the magnesium alloy microtube is required, and a processing method which is simple in process, high in precision and easy to produce is developed.
Disclosure of Invention
The Mg-Zn-Mn-Ca alloy has good mechanical property and corrosion resistance and has wide application prospect. The invention provides a preparation method for a Mg-Zn-Mn-Ca magnesium alloy micro-tube according to the performance characteristics of Mg-Zn-Mn-Ca series alloy.
The invention relates to a preparation method of a Mg-Zn-Mn-Ca magnesium alloy micro-tube, which is realized by the following technical scheme.
Raw materials: magnesium alloy pipe: an Mg-Zn-Mn-Ca alloy (Zn: 4.00-4.25 wt.%, Mn: 0.15-0.25 wt.%, Ca: 0.15-0.25 wt.%) tube having an outer diameter of 8mm and a wall thickness of 1 mm.
The specific preparation process comprises the following steps:
(1) pretreating a magnesium alloy pipe blank;
firstly, cutting a magnesium alloy pipe with the outer diameter of 8mm and the wall thickness of 1mm into a pipe section with the length of 120-200 mm by using a pipe cutter;
cutting one end of the pipe section longitudinally by adopting machining modes such as linear cutting or hacksaw cutting, cutting the pipe section horizontally and vertically to form 4 equal stub bars, wherein the length of each cut is 50-60 mm, and polishing and flattening the cut of the pipe by adopting No. 240 abrasive paper;
and thirdly, uniformly coating the molybdenum disulfide dry powder on the surface of the pipe to obtain a corresponding pipe blank.
(2) And (4) performing multi-pass drawing on the tube blank to obtain the magnesium alloy micro-tube.
In the step (2), the multi-pass drawing of the tube blank is hot working and is finished on a universal testing machine with a heating box; the drawing die is provided with a die hole, the front end of the die hole is a straight-through hole according to the direction of force or the movement direction of a pipe, a variable hole with gradually increased diameter is arranged behind the straight-through hole, the section of the variable hole along the axial direction is of a trapezoidal structure, and the minimum diameter of the front part of the variable hole is equal to the diameter of the straight-through hole; a movable long core rod capable of moving along the axial direction is arranged in a die hole of the drawing die; the tube blank is coaxially positioned in a die hole of the drawing die, and the movable long core rod coaxially penetrates through the tube blank to be coaxial with the tube blank;
in the step (2), the first 7 passes are blank drawing stages, namely, the tube blank is not provided with a movable long core rod, the last 6 to 8 passes are drawing stages provided with the movable long core rod, the deformation of each pass is 1.0 to 40.6 percent, the drawing speed is 2 to 10mm/min, the drawing temperature is 220 to 250 ℃, and the heat preservation is carried out for 10 to 20min before each pass is drawn. The diameter of the die hole is correspondingly reduced or the diameter of the die hole and the outer diameter of the movable long core rod are correspondingly reduced during drawing of each pass.
In the step (2), the pipe is clamped by the spring chuck, the clamping end is the cutting end of the pretreated pipe, a metal cylindrical rod is placed at the clamping end of the pipe in the empty pulling stage, so that the pipe is clamped conveniently, and when the heat preservation is started to be carried out for 15min after each time of pulling, the pipe is clamped manually.
In the step (2), the long core rod drawing channel rod withdrawing operation is also performed on a universal testing machine, and the rod withdrawing die comprises: withdrawing the rod sleeve head and pressing the block. The center of the rod withdrawing sleeve head is provided with a circular through hole, the diameter of the circular through hole is slightly larger than that of the movable long core rod and smaller than the outer diameter of the pipe, one end of the long core rod penetrates through the rod withdrawing sleeve head through hole when the rod is withdrawn, the outer diameter of the pipe is larger than that of the rod withdrawing sleeve head through hole, the pipe cannot pass through the pipe, then the long core rod is clamped by the spring chuck and an upward force is applied to the long core rod, the long core rod is pulled out, and the rod withdrawing operation is realized.
The method of the invention adjusts the diameter of the membrane hole and the outer diameter of the movable long core rod to prepare the magnesium alloy micro-fine tube with the outer diameter of the section of 3.1-3.4 mm and the wall thickness of 0.25-0.40 mm;
the invention has the following beneficial effects:
the method adopts the processing technologies of air drawing, long core rod drawing and the like to prepare the magnesium alloy micro-tube. The prepared magnesium alloy micro-fine tube has good surface quality, accurate size, uniform wall thickness (the wall difference rate is less than or equal to 2.00 percent) and excellent mechanical property, and the yield strength of the prepared Mg-Zn-Mn-Ca alloy tube is more than or equal to 350MPa, and the tensile strength is more than or equal to 400 MPa.
The rod withdrawing device is simple and easy, is convenient to operate and is carried out on a universal testing machine.
The processing method has the advantages of simple process, low equipment and processing cost, high processing efficiency, mass production and wide application prospect.
Drawings
FIG. 1 is a schematic view of a long core rod drawing process of the present invention in multiple passes,
1 is a movable long core rod, 2 is a tube blank, and 3 is a drawing die
Figure 2 is a drawing of a core-stripping rod device according to the invention,
1 is a pressing block, 2 is a rod withdrawing sleeve head, 3 is a tube blank, and 4 is a movable long core rod
FIG. 3 is a microstructure diagram of a microtube of the final pass of drawing in example 1,
(a) microtube microstructure; (b) micro-tube annealing (300 ℃/30min) state microstructure
Detailed Description
The invention is further illustrated below with reference to specific examples, in which: the following examples are only for illustrating the specific implementation method of the present invention and are not intended to limit the scope of the present invention.
Example 1
The embodiment is a preparation method for a Mg-Zn-Mn-Ca magnesium alloy micro-tube, which comprises the following steps:
(1) pretreating magnesium alloy pipe stock (alloy component Mg-4.15Zn-0.27Mn-0.21Ca)
Firstly, cutting a magnesium alloy pipe with the outer diameter of 8mm and the wall thickness of 1mm into a pipe section with the length of 120mm by using a pipe cutter;
cutting one end of the pipe section longitudinally by adopting machining modes such as linear cutting or hacksaw cutting, cutting the pipe section horizontally and vertically to form 4 equal stub bars, wherein the length of each cut is 50mm, and polishing and flattening the cut of the pipe by adopting No. 240 abrasive paper;
and thirdly, uniformly coating molybdenum disulfide dry powder on the surface of the pipe.
(3) Carrying out multi-pass idle drawing on the pretreated pipe blank, wherein the drawing deformation of each pass is 1-28%, and grinding the clamping end of the pipe blank by adopting No. 240 abrasive paper or a file in each pass to ensure that the pipe blank can be processed by the next pass through a die hole; wherein the drawing temperature of 1-4 passes is 250 ℃, the drawing speed is 8mm/min, and the temperature is kept for 10min before drawing; drawing at 250 ℃ for 5-7 passes, keeping the drawing speed at 3mm/min, preserving the heat for 20min before drawing, and manually clamping the pipe when the heat is preserved for 15min to obtain a thin pipe blank with the outer diameter of 6.0mm and the inner diameter of 3.6 mm;
(4) carrying out multiple times of long core rod drawing on the thin tube blank, wherein the drawing deformation of each time is 5% -40.6%, and grinding the clamping end of the tube by adopting No. 240 abrasive paper or a file in each time to ensure that the tube can be processed by the next time through a die hole; wherein the drawing temperature of 8-11 passes is 250 ℃, the drawing speed is 3mm/min, the drawing temperature of 12-13 passes is 230 ℃, the drawing speed is 3mm/min, the drawing temperature of 14 passes is 220 ℃, the drawing speed is 2mm/min, the temperature is kept for 20min before drawing of each pass, the pipe is manually clamped when the temperature is kept for 15min, and the magnesium alloy micro-tube with the outer diameter of 3.40mm and the wall thickness of 0.40mm is finally obtained after drawing of 14 passes.
The implementation effect is as follows: the magnesium alloy micro-tube prepared by the embodiment has good surface quality, accurate size, uniform wall thickness, 1.66% of wall difference rate, 416.3MPa of tensile strength, 372.4MPa of yield strength and 5.0% of elongation.
Example 2
The embodiment is a preparation method for a Mg-Zn-Mn-Ca magnesium alloy micro-tube, which comprises the following steps:
(1) pretreating magnesium alloy pipe blank (alloy component Mg-4.05Zn-0.30Mn-0.18Ca)
Cutting a magnesium alloy pipe with the outer diameter of 8mm and the wall thickness of 1mm into a pipe section with the length of 150mm by using a pipe cutter;
cutting one end of the pipe section longitudinally by adopting machining modes such as linear cutting or hacksaw cutting, cutting the pipe section horizontally and vertically to form 4 equal stub bars, wherein the length of each cut is 50mm, and polishing and flattening the cut of the pipe by adopting No. 240 abrasive paper;
and thirdly, uniformly coating molybdenum disulfide dry powder on the surface of the pipe.
(3) Carrying out multi-pass idle drawing on the pretreated pipe blank, wherein the drawing deformation of each pass is 1-28%, and grinding the clamping end of the pipe blank by adopting No. 240 abrasive paper or a file in each pass to ensure that the pipe blank can be processed by the next pass through a die hole; wherein the drawing temperature of 1-4 passes is 250 ℃, the drawing speed is 5mm/min, and the temperature is kept for 10min before drawing; drawing at 250 ℃ for 5-7 passes, keeping the drawing speed at 3mm/min, preserving heat for 20min before drawing, and manually clamping the pipe when the heat is preserved for 15min to obtain a thin pipe blank with the outer diameter of 6mm and the inner diameter of 3.6 mm;
(4) carrying out multiple times of long core rod drawing on the thin tube blank, wherein the drawing deformation of each time is 5% -40.6%, and grinding the clamping end of the tube by adopting No. 240 abrasive paper or a file in each time to ensure that the tube can be processed by the next time through a die hole; wherein the drawing temperature of 8-11 passes is 250 ℃, the drawing speed is 3mm/min, the drawing temperature of 12-13 passes is 230 ℃, the drawing speed is 3mm/min, the drawing temperature of 14 passes is 220 ℃, the drawing speed is 2mm/min, the temperature is kept for 20min before drawing of each pass, the pipe is manually clamped when the temperature is kept for 15min, and the magnesium alloy micro-tube with the outer diameter of 3.40mm and the wall thickness of 0.40mm is finally obtained after drawing of 14 passes.
The implementation effect is as follows: the magnesium alloy micro-tube prepared by the embodiment has good surface quality, accurate size, uniform wall thickness, 2.00 percent of wall difference, 400.9MPa of tensile strength, 368.9MPa of yield strength and 6.3 percent of elongation.
The embodiment is a preparation method for a Mg-Zn-Mn-Ca magnesium alloy micro-tube, which comprises the following steps:
(1) pretreating magnesium alloy pipe stock (alloy component Mg-4.04Zn-0.18Mn-0.18Ca)
Firstly, cutting a magnesium alloy pipe with the outer diameter of 8mm and the wall thickness of 1mm into a pipe section with the length of 180mm by using a pipe cutter;
cutting one end of the pipe section longitudinally by adopting machining modes such as linear cutting or hacksaw cutting, cutting the pipe section horizontally and vertically to form 4 equal stub bars, wherein the length of each cut is 60mm, and polishing and flattening the cut of the pipe by adopting No. 240 abrasive paper;
and thirdly, uniformly coating molybdenum disulfide dry powder on the surface of the pipe.
(3) Carrying out multi-pass idle drawing on the pretreated pipe blank, wherein the drawing deformation of each pass is 1-28%, and grinding the clamping end of the pipe blank by adopting No. 240 abrasive paper or a file in each pass to ensure that the pipe blank can be processed by the next pass through a die hole; wherein the drawing temperature of 1-4 passes is 250 ℃, the drawing speed is 5mm/min, and the temperature is kept for 10min before drawing; drawing at 250 ℃ for 5-7 passes, keeping the drawing speed at 3mm/min, preserving heat for 20min before drawing, and manually clamping the pipe when the heat is preserved for 15min to obtain a thin pipe blank with the outer diameter of 6mm and the inner diameter of 3.6 mm;
(4) carrying out multiple times of long core rod drawing on the thin tube blank, wherein the drawing deformation of each time is 5% -40.6%, and grinding the clamping end of the tube by adopting No. 240 abrasive paper or a file in each time to ensure that the tube can be processed by the next time through a die hole; the drawing temperature of 8-11 passes is 250 ℃, the drawing speed is 3mm/min, the drawing temperature of 12-13 passes is 230 ℃, the drawing speed is 3mm/min, the temperature is kept for 20min before drawing, the drawing temperature of 14-15 passes is 220 ℃, the drawing speed is 2mm/min, the temperature is kept for 20min before drawing, the pipe is manually clamped when the temperature of each pass is kept for 15min, and the magnesium alloy micro-pipe with the outer diameter of 3.1mm and the wall thickness of 0.25mm is finally obtained after 15 passes of drawing.
The implementation effect is as follows: the magnesium alloy micro-tube prepared by the embodiment has good surface quality, accurate size, uniform wall thickness and wall difference rate of 1.80 percent.
Although preferred embodiments have been depicted and described in detail herein, it will be apparent to those skilled in the relevant art that various modifications, additions, substitutions and the like can be made without departing from the spirit of the invention and these are therefore considered to be within the scope of the invention as defined in the following claims.
Claims (4)
1. A preparation method of Mg-Zn-Mn-Ca magnesium alloy micro-tube is characterized in that,
raw materials: magnesium alloy pipe: an Mg-Zn-Mn-Ca alloy (Zn: 4.00-4.25 wt.%, Mn: 0.15-0.25 wt.%, Ca: 0.15-0.25 wt.%) tube having an outer diameter of 8mm and a wall thickness of 1 mm.
The specific preparation process comprises the following steps:
(1) pretreating a magnesium alloy pipe blank;
firstly, cutting a magnesium alloy pipe with the outer diameter of 8mm and the wall thickness of 1mm into a pipe section with the length of 120-200 mm by using a pipe cutter;
cutting one end of the pipe section longitudinally by adopting machining modes such as linear cutting or hacksaw cutting, cutting the pipe section horizontally and vertically to form 4 equal stub bars, wherein the length of each cut is 50-60 mm, and polishing and flattening the cut of the pipe by adopting No. 240 abrasive paper;
and thirdly, uniformly coating the molybdenum disulfide dry powder on the surface of the pipe to obtain a corresponding pipe blank.
(2) Performing multi-pass drawing on the tube blank to obtain a magnesium alloy micro-tube;
in the step (2), the multi-pass drawing of the tube blank is hot working and is finished on a universal testing machine with a heating box; the drawing die is provided with a die hole, the front end of the die hole is a straight-through hole according to the direction of force or the movement direction of a pipe, a variable hole with gradually increased diameter is arranged behind the straight-through hole, the section of the variable hole along the axial direction is of a trapezoidal structure, and the minimum diameter of the front part of the variable hole is equal to the diameter of the straight-through hole; a movable long core rod capable of moving along the axial direction is arranged in a die hole of the drawing die; the tube blank is coaxially positioned in a die hole of the drawing die, and the movable long core rod coaxially penetrates through the tube blank to be coaxial with the tube blank;
in the step (2), the first 7 passes are blank drawing stages, namely, the tube blank is not provided with a movable long core rod, the last 6 to 8 passes are drawing stages provided with the movable long core rod, the deformation of each pass is 1.0 to 40.6 percent, the drawing speed is 2 to 10mm/min, the drawing temperature is 220 to 250 ℃, and the heat preservation is carried out for 10 to 20min before each pass is drawn. The diameter of the die hole is correspondingly reduced or the diameter of the die hole and the outer diameter of the movable long core rod are correspondingly reduced during drawing of each pass.
2. The method according to claim 1, wherein in the step (2), the end part of the tube blank is clamped by a spring chuck, the clamping end is the cutting end of the pretreated tube, a metal cylindrical rod is placed at the clamping end of the tube blank in the idle-drawing stage so as to clamp the tube blank, and the tube blank is manually clamped once when the temperature of drawing of each pass is kept for 15 min.
3. The method of claim 1, wherein in step (2), the withdrawing operation of the long core rod between the drawing paths is also performed on a universal tester, and the withdrawing die comprises: withdrawing the rod sleeve head and pressing the block. The center of the rod withdrawing sleeve head is provided with a circular through hole, the diameter of the circular through hole is slightly larger than that of the movable long core rod and smaller than the outer diameter of the pipe, one end of the long core rod penetrates through the rod withdrawing sleeve head through hole when the rod is withdrawn, the outer diameter of the pipe is larger than that of the rod withdrawing sleeve head through hole, the pipe cannot pass through the pipe, then the long core rod is clamped by the spring chuck and an upward force is applied to the long core rod, the long core rod is pulled out, and the rod withdrawing operation is realized.
4. The method of claim 1, wherein the diameter of the cross section of the magnesium alloy microtube is 3.1-3.4 mm and the wall thickness is 0.25-0.40 mm, which are obtained by adjusting the diameter of the die hole and the outer diameter of the movable long core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011025209.5A CN112246898A (en) | 2020-09-25 | 2020-09-25 | Preparation method for Mg-Zn-Mn-Ca magnesium alloy micro-tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011025209.5A CN112246898A (en) | 2020-09-25 | 2020-09-25 | Preparation method for Mg-Zn-Mn-Ca magnesium alloy micro-tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112246898A true CN112246898A (en) | 2021-01-22 |
Family
ID=74234068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011025209.5A Pending CN112246898A (en) | 2020-09-25 | 2020-09-25 | Preparation method for Mg-Zn-Mn-Ca magnesium alloy micro-tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112246898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351679A (en) * | 2021-06-03 | 2021-09-07 | 东南大学 | Preparation method of medical zinc alloy anastomosis nail |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0255614A (en) * | 1988-08-19 | 1990-02-26 | Sumitomo Metal Ind Ltd | Cold drawing method for steel tube |
| CN101172287A (en) * | 2007-11-14 | 2008-05-07 | 攀钢集团成都钢铁有限责任公司 | Limiting core rod cold drawn tube technique and equipment thereof |
| CN101322985A (en) * | 2008-07-22 | 2008-12-17 | 西北有色金属研究院 | Warm state drawing method for processing medical magnesium alloy fine-radial thin-wall pipes |
| CN103170516A (en) * | 2013-03-05 | 2013-06-26 | 广州有色金属研究院 | Short-process preparation method of magnesium or magnesium alloy capillary |
| CN107570551A (en) * | 2017-08-23 | 2018-01-12 | 北京工业大学 | A kind of magnesium alloy microcapillary and preparation method thereof |
| CN108580579A (en) * | 2017-08-21 | 2018-09-28 | 广东省材料与加工研究所 | A kind of preparation method of medical magnesium alloy thin-wall pipes |
-
2020
- 2020-09-25 CN CN202011025209.5A patent/CN112246898A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0255614A (en) * | 1988-08-19 | 1990-02-26 | Sumitomo Metal Ind Ltd | Cold drawing method for steel tube |
| CN101172287A (en) * | 2007-11-14 | 2008-05-07 | 攀钢集团成都钢铁有限责任公司 | Limiting core rod cold drawn tube technique and equipment thereof |
| CN101322985A (en) * | 2008-07-22 | 2008-12-17 | 西北有色金属研究院 | Warm state drawing method for processing medical magnesium alloy fine-radial thin-wall pipes |
| CN103170516A (en) * | 2013-03-05 | 2013-06-26 | 广州有色金属研究院 | Short-process preparation method of magnesium or magnesium alloy capillary |
| CN108580579A (en) * | 2017-08-21 | 2018-09-28 | 广东省材料与加工研究所 | A kind of preparation method of medical magnesium alloy thin-wall pipes |
| CN107570551A (en) * | 2017-08-23 | 2018-01-12 | 北京工业大学 | A kind of magnesium alloy microcapillary and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351679A (en) * | 2021-06-03 | 2021-09-07 | 东南大学 | Preparation method of medical zinc alloy anastomosis nail |
| CN113351679B (en) * | 2021-06-03 | 2024-05-17 | 东南大学 | Preparation method of medical zinc alloy anastomat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104759850B (en) | A kind of aluminium alloy height barrier part processing technique | |
| CN103014574B (en) | Preparation method of TC18 ultra-fine grain titanium alloy | |
| CN108746447A (en) | A kind of anticorodal forge piece manufacturing process | |
| CN101914712B (en) | Extrusion deformation process of high-strength magnesium alloy thick plate | |
| CN103331582B (en) | A kind of method preparing metal thin-wall microtubule | |
| CN101391368A (en) | Machining method of deep-hole pin bush parts | |
| CN101219444B (en) | Isometric bending channel deformation production method for high-strength commercial titanium block at room temperature | |
| CN106425317A (en) | Preparation method of Ti-B19 high-strength titanium alloy large-caliber thick wall pipe | |
| CN103572186B (en) | Equal-diameter bending passage deformation is adopted to prepare the method for ultra-fine grain titanium matrix composite | |
| CN109352279A (en) | A kind of die-forging forming method of TC4 titanium alloy circle-T shape Forging | |
| CN109514261A (en) | Crash bar bracket processing technology | |
| CN112246898A (en) | Preparation method for Mg-Zn-Mn-Ca magnesium alloy micro-tube | |
| CN107127282A (en) | A kind of isothermal forging method of the high muscle thin web plate class part of magnesium alloy | |
| WO2004113742A1 (en) | Magnesium-base alloy screw and method of manufacturing the same | |
| CN107671506A (en) | Metal thin-wall tube preparation method, metal thin-wall pipe fitting and angiocarpy bracket | |
| CN104046863B (en) | The preparation method of big flakiness ratio ultra-high strength and toughness aluminum alloy plate materials | |
| CN106862863A (en) | A kind of preparation processing method of the ultra-thin titanium alloy shell of great diameter and long | |
| CN112342431B (en) | High-thermal-stability equiaxial nanocrystalline Ti6Al4V-Cu alloy and preparation method thereof | |
| CN115971792A (en) | Cylindrical member shape integrated integral progressive forming method and system | |
| CN109663921B (en) | Composite material plate and preparation method thereof | |
| CN102836891A (en) | Technique for drawing and expanding metal tubes by cold drawing | |
| CN211938451U (en) | Labor-saving composite extrusion forming die for metal pipes | |
| CN109622660A (en) | A kind of preparation method of magnesium alloy precision tube | |
| CN116689531B (en) | Preparation method of high-strength TC4 pipe | |
| CN110484874A (en) | A kind of preparation method of high-purity aluminum pipe sputtering target material |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210122 |
|
| WD01 | Invention patent application deemed withdrawn after publication |