CN103862238A - Manufacturing method for porous tantalum workpieces and corresponding device - Google Patents
Manufacturing method for porous tantalum workpieces and corresponding device Download PDFInfo
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- CN103862238A CN103862238A CN201410088043.XA CN201410088043A CN103862238A CN 103862238 A CN103862238 A CN 103862238A CN 201410088043 A CN201410088043 A CN 201410088043A CN 103862238 A CN103862238 A CN 103862238A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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Abstract
The invention discloses a manufacturing method for porous tantalum workpieces and a corresponding device. The manufacturing method for the porous tantalum workpieces comprises the following steps: providing a tantalum-foil material, and layering and computing by a computer; moving a material strap to a processing region; carrying out laser scanning and cutting, and moving downward under the coordination of a workbench; bonding; measuring height data and feeding back to the computer, and executing corresponding operation by the computer; executing corresponding cutting actions by a laser head, and moving downward under the coordination of the workbench; repeating the steps S5 to S7 until a last layer intersection surface is cut out by laser; sintering. Through the manufacturing method for the porous tantalum workpieces, provided by the invention, a two-dimensional porous tantalum thin piece is obtained through optimizing technological parameters, accurately controlling a cutting region, and controlling pulse width, frequency and scanning speed. Biological porous tantalum is formed through layered piling up and sintering. The manufacturing method provided by the invention is applied to medical industry and solves the problem of environmental pollution caused by using power for layered piling up and the problems in powder recycling.
Description
Technical field
The present invention relates to the preparing technical field of biomaterial, relate in particular to a kind of manufacture method of porous tantalum workpiece, and for realizing the device of this manufacture method.
Background technology
Nearly 2,000,000 client need of annual China do joint replacement surgery, and to being in great demand of osseous tissue renovating material, according to statistics, the market scale of the annual bone renovating material in the whole world is more than 2,000 hundred million dollars.Mainly contain for clinical bio-medical material at present: biomedical metallic material, bio-medical organic material (mainly referring to high-molecular organic material), bio-medical Inorganic Non-metallic Materials (mainly referring to bioceramic, bio-vitric and carbon materials) and bio-medical composition.Contrast, biomedical metallic material, as stainless steel, cobalt-base alloys, titanium and titanium alloy and noble metal etc., has higher mechanical strength, elasticity and excellent machinability, has obvious advantage in bone reparation and replacement bone organizational aspects.
In the middle of numerous biomedical metallic materials, metal tantalum has good biocompatibility and biologically active, is paid attention to widely in recent years and large quantity research.But fine and close tantalum material is due to than great, the shortcomings such as elastic modelling quantity height, directly in implant into body.Therefore, Design and manufacture one class had both had good biocompatibility and biologically active, and the research again with good mechanical property and the porous tantalum metal material similar to human bone microstructure becomes the focus of research.
Porous tantalum is that one is similar to foamed metal, and the characteristic that it has high volume porosity rate, low elastic modulus and high skin-friction coefficient is a kind of bone alternate material preferably.Aspect mechanical property, the elastic modelling quantity of porous tantalum, fatigue resistance, coefficient of friction and normal bone tissues are close; Aspect biological nature, porous tantalum shows good biocompatibility, corrosion resistance, bone induction and power of regeneration, and is expected to catch up with and surpass other metal materials of applying, thereby becomes the developing direction that bone tissue engineer is new.
Although porous tantalum has above-mentioned many advantages, because the fusing point of tantalum is up to 2996 ℃, and tantalum and oxygen has higher affinity, and this preparation that is porous tantalum has proposed new challenge.At present, mainly comprise about the preparation technology of porous tantalum: vapour deposition process, foam impregnation method etc.
Wherein, porous tantalum prepared by vapour deposition process has the characteristic of high volume porosity rate, low elastic modulus and high skin-friction coefficient, but this process condition requires strictly, deposition velocity is slow, investment is large, production cost is high, simultaneously because tantalum belongs to insoluble metal, its evaporation is very difficult, need in addition vacuum environment to evaporate, cause cost greatly to increase, thereby limit its extensive use.In addition, foam impregnation method is easily brought the residual of organic poison, and this is owing to having adopted binding agent and organic ink, easily produces toxicity and impurity is residual, and easy-clear is unclean.
Summary of the invention
For the problems referred to above, the invention provides a kind of manufacture method of porous tantalum workpiece, and for realizing the device of this manufacture method.
One of to achieve these goals, the manufacture method of a kind of porous tantalum workpiece of the present invention, it comprises the steps:
S1., tantalum foil is provided, it is carried out to cleaning, the tantalum foil through cleaning is wound on material roller, form material strip to be processed;
S2. computer, according to the entity size of porous tantalum workpiece to be manufactured, calculates every layer of porous tantalum workpiece and hands over profile diagram data and the laser head track while scan diagram data in cross section, and by this data importing laser head control system;
S3. material strip moves to the machining area position corresponding to top and laser head below of workbench;
S4. under the control of laser head control system, laser head carries out scan incision to the material strip that is positioned at machining area, obtains tantalum paper tinsel synusia, and after cutting, workbench moves down the thickness of a tantalum paper tinsel synusia;
S5. material strip to be processed continues to move to machining area, and with step S4 in the tantalum paper tinsel synusia that obtains bond;
S6. the material strip to be processed that measuring bonds gets up and the height of tantalum paper tinsel synusia, and the altitude information of measurement is fed back to computer, computer, according to the altitude information receiving, calculates the profile diagram data in corresponding friendship cross section, and these profile diagram data is input in laser head control system;
S7. laser head control system is determined corresponding laser head track while scan data according to the profile diagram data of input, and cutting is positioned at the material strip to be processed of machining area according to definite laser head track while scan Data Control laser head, after cutting, workbench moves down the thickness of a tantalum paper tinsel synusia;
S8. repeat S5 to S7 step, cut out last one deck to laser head and hand over cross section, form the 3D solid of workpiece;
S9. 3D solid is carried out to sintering, obtain porous tantalum workpiece.
As a further improvement on the present invention, in described step S1, in the thickness of material strip and step S2, the thickness in every layer of friendship cross section is 0.03～0.09mm.
As a further improvement on the present invention, described cleaning comprises: utilize acetone or absolute alcohol to clean tantalum foil, dried for standby after cleaning.
As a further improvement on the present invention, described step S5 specifically comprises: material strip to be processed continues to move to machining area, and hot-pressing roller back and forth rolls the material strip to be processed that is positioned at machining area, so that the tantalum paper tinsel synusia of material strip to be processed and acquisition is bondd.
As a further improvement on the present invention, the distance that material strip to be processed continues to move is slightly larger than the distance of laser head cutting processing on material strip moving direction.
As a further improvement on the present invention, the power output of the lasing light emitter of laser head is 30～160W, and pulsewidth scope is that 0.3～20.0ms, frequency are that 1～100Hz, sweep speed are 30～180mm/min, and the wavelength of lasing light emitter is 800-1064nm.
As a further improvement on the present invention, described laser head, under the control of laser head control system, also cuts and comprises according to track while scan data: unnecessary tantalum foil in profile diagram is cut into grid.
As a further improvement on the present invention, 3D solid is carried out, before sintering, 3D solid being utilized to clamp, clamping force is at least 10MPa, 3D solid is put into vacuum drying oven again and under the atmosphere of argon gas, carried out sintering, sintering condition is: at room temperature～500 ℃, and sintering 100min; Be warming up to 1200 ℃, sintering 100～300min at this temperature; Be warming up to 1800～2300 ℃, and at this temperature sintering 100～300min.
For realizing above-mentioned another goal of the invention, of the present invention a kind of for realizing the device of manufacture method of porous tantalum workpiece as above, described device comprises:
Feed roller, some guide rollers and the material receiving roller being synchronized with the movement with described feed roller;
Hoistable platform, it is arranged between described feed roller and material receiving roller;
Laser cutting system, it is arranged at described hoistable platform top, and described laser cutting system comprises lasing light emitter, laser mirror, laser head;
Rolling mechanism, it is arranged at described hoistable platform top;
Computer, laser head control system.
As a further improvement on the present invention, described rolling mechanism comprises hot-pressing roller.
Compared with prior art, the invention has the beneficial effects as follows: the manufacture method of porous tantalum workpiece of the present invention by Optimizing Process Parameters, accurately control cutting zone, is controlled pulsewidth, frequency, sweep speed, has obtained two-dimentional porous tantalum thin slice.And by piling up layer by layer, sintering obtains biological stephanoporate tantalum.Manufacture method of the present invention can be applied to medical industry, and has solved the problem of environmental pollution while using powder to pile up layer by layer.
In addition,, in the manufacture method of porous tantalum workpiece of the present invention, adopt laser instrument to carry out straight line and irradiate cutting tantalum foil, rather than directly act on tantalum powder, thereby the waste material of processing is tantalum thin slice rather than powder, and the problem of waste recovery utilization is also resolved.
The manufacture method of porous tantalum workpiece of the present invention also possesses that energy controllability is high, narrow, the working (machining) efficiency advantages of higher in processing heat affected area, can better adapt to vibration monitoring.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of a specific embodiment of the manufacture method of porous tantalum workpiece of the present invention;
Fig. 2 is of the present invention for realizing the schematic perspective view of device of manufacture method of porous tantalum workpiece.
The specific embodiment
To the technical scheme in the embodiment of the present invention be described in detail below, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
As shown in Figure 1, the manufacture method of a kind of porous tantalum workpiece of the present invention, it comprises the steps:
S1., tantalum foil is provided, it is carried out to cleaning, the tantalum foil through cleaning is wound on material roller, form material strip to be processed.
Wherein, described cleaning comprises: utilize acetone or absolute alcohol to clean tantalum foil, dried for standby after cleaning.The thickness of tantalum foil material strip is preferably: 0.03～0.09mm, purity is >=99.5%.
S2. computer, according to the entity size of porous tantalum workpiece to be manufactured, calculates every layer of porous tantalum workpiece and hands over profile diagram data and the laser head track while scan diagram data in cross section, and by this data importing laser head control system.
Computer, in the time calculating every layer of porous tantalum workpiece and hand over the profile diagram data in cross section and laser head track while scan diagram data, is to utilize entity layering software that the physical model of porous tantalum workpiece is carried out layering and calculated.In the time of layering, take every layer thickness as 0.03～0.09mm, the physical model of porous tantalum workpiece is carried out to layering because under this thickness range condition, the precision of the porous tantalum workpiece of manufacture is higher, and thickness approach or equal 0.03 o'clock the highest.
S3. material strip moves to the machining area position corresponding to top and laser head below of workbench.
S4. under the control of laser head control system, laser head carries out scan incision to the material strip that is positioned at machining area, obtains tantalum paper tinsel synusia, and after cutting, workbench moves down the thickness of a tantalum paper tinsel synusia.
Laser head control system is in the time controlling laser head motion, read in order and be stored in wherein every layer profile diagram data and the corresponding laser head track while scan diagram data of handing over cross section, and according to the motion of laser head track while scan diagram data control laser head, laser head, under the control of laser head control system, correspondingly cuts out one deck and hands over cross section.
S5. material strip to be processed continues to move to machining area, and with step S4 in the tantalum paper tinsel synusia that obtains bond.
Particularly, as a kind of embodiment, material strip to be processed continues to move to after machining area, utilizes hot-pressing roller back and forth to roll the material strip to be processed that is positioned at machining area, so that the tantalum paper tinsel synusia of material strip to be processed and acquisition is bondd.In addition, continue in mobile process at material strip to be processed, material strip to be processed continues mobile distance and is slightly larger than the distance of laser head cutting processing on material strip moving direction, thereby guarantees that cut tantalum foil material strip removes from machining area completely.
S6. the material strip to be processed that measuring bonds gets up and the height of tantalum paper tinsel synusia, and the altitude information of measurement is fed back to computer, computer, according to the altitude information receiving, calculates the profile diagram data in corresponding friendship cross section, and these profile diagram data is input in laser head control system.
In the time measuring the material strip to be processed piling up and the height of tantalum paper tinsel synusia, altitude information described in the position measurement that can stop according to workbench.
S7. laser head control system is determined corresponding laser head track while scan data according to the profile diagram data of input, and cutting is positioned at the material strip to be processed of machining area according to definite laser head track while scan Data Control laser head, after cutting, workbench moves down the thickness of a tantalum paper tinsel synusia.
In the time of cutting, the power output of controlling the lasing light emitter of laser head is 30～160W, and pulsewidth scope is that 0.3～20.0ms, frequency are that 1～100Hz, sweep speed are 30～180mm/min, and the wavelength of lasing light emitter is 800-1064nm.Under the power output condition of described 30～160W, laser can cut one deck material strip that is positioned at machining area just, and can not cut to the tantalum foil material strip that is positioned at machining area below.
In addition, laser head also cuts and comprises according to track while scan data under controlling: in by profile diagram, unnecessary tantalum foil cuts into grid, so that the workpiece that cutting processing forms can be separated.
S8. repeat S5 to S7 step, cut out last one deck to laser head and hand over cross section, form the 3D solid of workpiece.
S9. 3D solid is carried out to sintering, obtain porous tantalum workpiece.
Wherein, 3D solid is carried out, before sintering, 3D solid being utilized to clamp, clamping force is at least 10MPa, then 3D solid is put into vacuum drying oven and under the atmosphere of argon gas, carry out sintering, and sintering condition is: at room temperature～500 ℃, and sintering 100min; Be warming up to 1200 ℃, sintering 100～300min at this temperature; Be warming up to 1800～2300 ℃, and at this temperature sintering 100～300min.
As shown in Figure 2, it is a kind of for realizing the device 100 of manufacture method of porous tantalum workpiece as above that the present invention also provides, and this device comprises: feed roller 10, some guide rollers 20 and the material receiving roller 30 being synchronized with the movement with described feed roller 10.Wherein, described feed roller 10 is for being wound around tantalum foil material strip to be processed, and material receiving roller 30 is for being wound around the tantalum foil material strip after cutting.Some guide rollers 20 are arranged between feed roller 10 and material receiving roller 30, the effect that tantalum foil material band is played guiding and supported.
The device 100 of the manufacture method that realizes porous tantalum workpiece of the present invention also comprises: hoistable platform 40 and laser cutting system 50, wherein hoistable platform 40 is arranged between described feed roller 10 and material receiving roller 30, and can carry the tantalum foil cutting down and move.Laser cutting system 50 is arranged at described hoistable platform 40 tops, and described laser cutting system 50 comprises lasing light emitter 501, laser mirror 502, laser head 503.Thereby the laser of launching from lasing light emitter 501, after laser mirror 502 reflections, is passed to laser head 503 places, and launches through laser head 503.
The device 100 of the manufacture method that realizes porous tantalum workpiece of the present invention also comprises: rolling mechanism, computer and laser head control system.Described rolling mechanism is arranged at the top of described hoistable platform 40, and this rolling mechanism comprises hot-pressing roller 60.
Being described in detail of manufacture method below in conjunction with some embodiment to porous tantalum workpiece.
Embodiment 1
Set up porous tantalum workpiece solid geometry model, and utilize computer to its layering processing, obtain every layer of profile diagram data and laser head track while scan diagram data of handing over cross section, and hand over the profile diagram data in cross section and laser head track while scan diagram data to import laser head control system by every layer.Be 0.03mm by thickness, purity is greater than 99.5% tantalum foil delivers to the top of workbench.Laser head is under the control of laser head control system, and cutting tantalum foil forms corresponding friendship cross section, and the friendship cross section of formation cuts down from unwanted region, and rejects unwanted waste material on current tantalum foil.
The thickness of workbench decline one deck tantalum foil, unprocessed tantalum foil continues to move to machining area, and hot-rolling pressing makes the tantalum foil surface that is positioned at machining area combine closely with the tantalum foil cutting.Laser head is under the control of laser head control system, continue tantalum foil to cut and form the corresponding cross section of handing over, the energy that simultaneously guarantees cutting can not affect the tantalum foil that one deck below cut formation and hand over cross section, and workbench continues to move down the thickness of one deck tantalum foil.Tantalum foil repeats above-mentioned shift action, and laser head repeats the 3D solid of above-mentioned cutting action to workpiece formation required size.Wherein, the power of lasing light emitter is 30W, and pulsewidth is that 0.3ms, frequency are that 1Hz, sweep speed are 30mm/min.
The 3D solid forming is clamped to clamping force >=10Mpa.After clamping, put into vacuum drying oven, pass into argon gas and carry out sintering processes, sintering condition is as follows: at 500 ℃ of temperature, and sintering 100min; Be warming up to 1200 ℃, sintering 100min at this temperature; Be warming up to 1800 ℃, at this temperature, sintering 100min.After vacuum drying oven is cooling, take out the porous tantalum workpiece obtaining.
Embodiment 2
Set up porous tantalum workpiece solid geometry model, and utilize computer to its layering processing, obtain every layer of profile diagram data and laser head track while scan diagram data of handing over cross section, and hand over the profile diagram data in cross section and laser head track while scan diagram data to import laser head control system by every layer.Be 0.05mm by thickness, purity is greater than 99.5% tantalum foil delivers to the top of workbench.Laser head is under the control of laser head control system, and cutting tantalum foil forms corresponding friendship cross section, and the friendship cross section of formation cuts down from unwanted region, and rejects unwanted waste material on current tantalum foil.
The thickness of workbench decline one deck tantalum foil, unprocessed tantalum foil continues to move to machining area, and hot-rolling pressing makes the tantalum foil surface that is positioned at machining area combine closely with the tantalum foil cutting.Laser head is under the control of laser head control system, continue tantalum foil to cut and form the corresponding cross section of handing over, the energy that simultaneously guarantees cutting can not affect the tantalum foil that one deck below cut formation and hand over cross section, and workbench continues to move down the thickness of one deck tantalum foil.Tantalum foil repeats above-mentioned shift action, and laser head repeats the 3D solid of above-mentioned cutting action to workpiece formation required size.Wherein, the power of lasing light emitter is 100W, and pulsewidth is that 10.0ms, frequency are that 500Hz, sweep speed are 100mm/min.
The 3D solid forming is clamped to clamping force >=10Mpa.After clamping, put into vacuum drying oven, pass into argon gas and carry out sintering processes, sintering condition is as follows: at 500 ℃ of temperature, and sintering 100min; Be warming up to 1200 ℃, sintering 150min at this temperature; Be warming up to 2000 ℃, at this temperature, sintering 150min.After vacuum drying oven is cooling, take out the porous tantalum workpiece obtaining.
Embodiment 3
Set up porous tantalum workpiece solid geometry model, and utilize computer to its layering processing, obtain every layer of profile diagram data and laser head track while scan diagram data of handing over cross section, and hand over the profile diagram data in cross section and laser head track while scan diagram data to import laser head control system by every layer.Be 0.09mm by thickness, purity is greater than 99.5% tantalum foil delivers to the top of workbench.Laser head is under the control of laser head control system, and cutting tantalum foil forms corresponding friendship cross section, and the friendship cross section of formation cuts down from unwanted region, and rejects unwanted waste material on current tantalum foil.
The thickness of workbench decline one deck tantalum foil, unprocessed tantalum foil continues to move to machining area, and hot-rolling pressing makes the tantalum foil surface that is positioned at machining area combine closely with the tantalum foil cutting.Laser head is under the control of laser head control system, continue tantalum foil to cut and form the corresponding cross section of handing over, the energy that simultaneously guarantees cutting can not affect the tantalum foil that one deck below cut formation and hand over cross section, and workbench continues to move down the thickness of one deck tantalum foil.Tantalum foil repeats above-mentioned shift action, and laser head repeats the 3D solid of above-mentioned cutting action to workpiece formation required size.Wherein, the power of lasing light emitter is 160W, and pulsewidth is that 20.0ms, frequency are that 100Hz, sweep speed are 180mm/min.
The 3D solid forming is clamped to clamping force >=10Mpa.After clamping, put into vacuum drying oven, pass into argon gas and carry out sintering processes, sintering condition is as follows: at 500 ℃ of temperature, and sintering 100min; Be warming up to 1200 ℃, sintering 300min at this temperature; Be warming up to 2300 ℃, at this temperature, sintering 300min.After vacuum drying oven is cooling, take out the porous tantalum workpiece obtaining.
In sum, the manufacture method of porous tantalum workpiece of the present invention by Optimizing Process Parameters, accurately control cutting zone, is controlled pulsewidth, frequency, sweep speed, has obtained two-dimentional porous tantalum thin slice.And by piling up layer by layer, sintering obtains biological stephanoporate tantalum.Manufacture method of the present invention can be applied to medical industry, and has solved the problem of environmental pollution while using powder to pile up layer by layer.
In addition,, in the manufacture method of porous tantalum workpiece of the present invention, adopt laser instrument to carry out straight line and irradiate cutting tantalum foil, rather than directly act on tantalum powder, thereby the waste material of processing is tantalum thin slice rather than powder, and the problem of waste recovery utilization is also resolved.
The manufacture method of porous tantalum workpiece of the present invention also possesses that energy controllability is high, narrow, the working (machining) efficiency advantages of higher in processing heat affected area, can better adapt to vibration monitoring.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the present invention.
In addition, be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (10)
1. a manufacture method for porous tantalum workpiece, is characterized in that, the manufacture method of described porous tantalum workpiece comprises the steps:
S1., tantalum foil is provided, it is carried out to cleaning, the tantalum foil through cleaning is wound on material roller, form material strip to be processed;
S2. computer, according to the entity size of porous tantalum workpiece to be manufactured, calculates every layer of porous tantalum workpiece and hands over profile diagram data and the laser head track while scan diagram data in cross section, and by this data importing laser head control system;
S3. material strip moves to the machining area position corresponding to top and laser head below of workbench;
S4. under the control of laser head control system, laser head carries out scan incision to the material strip that is positioned at machining area, obtains tantalum paper tinsel synusia, and after cutting, workbench moves down the thickness of a tantalum paper tinsel synusia;
S5. material strip to be processed continues to move to machining area, and with step S4 in the tantalum paper tinsel synusia that obtains bond;
S6. the material strip to be processed that measuring bonds gets up and the height of tantalum paper tinsel synusia, and the altitude information of measurement is fed back to computer, computer, according to the altitude information receiving, calculates the profile diagram data in corresponding friendship cross section, and these profile diagram data is input in laser head control system;
S7. laser head control system is determined corresponding laser head track while scan data according to the profile diagram data of input, and cutting is positioned at the material strip to be processed of machining area according to definite laser head track while scan Data Control laser head, after cutting, workbench moves down the thickness of a tantalum paper tinsel synusia;
S8. repeat S5 to S7 step, cut out last one deck to laser head and hand over cross section, form the 3D solid of workpiece;
S9. 3D solid is carried out to sintering, obtain porous tantalum workpiece.
2. the manufacture method of porous tantalum workpiece according to claim 1, is characterized in that, in described step S1, in the thickness of material strip and step S2, the thickness in every layer of friendship cross section is 0.03～0.09mm.
3. the manufacture method of porous tantalum workpiece according to claim 1, is characterized in that, described cleaning comprises: utilize acetone or absolute alcohol to clean tantalum foil, dried for standby after cleaning.
4. the manufacture method of porous tantalum workpiece according to claim 1, it is characterized in that, described step S5 specifically comprises: material strip to be processed continues to move to machining area, hot-pressing roller back and forth rolls the material strip to be processed that is positioned at machining area, so that the tantalum paper tinsel synusia of material strip to be processed and acquisition is bondd.
5. the manufacture method of porous tantalum workpiece according to claim 1, is characterized in that, the distance that material strip to be processed continues to move is slightly larger than the distance of laser head cutting processing on material strip moving direction.
6. the manufacture method of porous tantalum workpiece according to claim 1, it is characterized in that, the power output of the lasing light emitter of laser head is 30～160W, and pulsewidth scope is that 0.3～20.0ms, frequency are that 1～100Hz, sweep speed are 30～180mm/min, and the wavelength of lasing light emitter is 800-1064nm.
7. the manufacture method of porous tantalum workpiece according to claim 1, is characterized in that, described laser head, under the control of laser head control system, also cuts and comprises according to track while scan data: unnecessary tantalum foil in profile diagram is cut into grid.
8. the manufacture method of porous tantalum workpiece according to claim 1, it is characterized in that, 3D solid is carried out before sintering, 3D solid is utilized to clamp, clamping force is at least 10MPa, 3D solid is put into vacuum drying oven again and under the atmosphere of argon gas, carried out sintering, sintering condition is: at room temperature～500 ℃, and sintering 100min; Be warming up to 1200 ℃, sintering 100～300min at this temperature; Be warming up to 1800～2300 ℃, and at this temperature sintering 100～300min.
9. for realizing the device of manufacture method for the porous tantalum workpiece as described in claim 1～8 any one, it is characterized in that, described device comprises:
Feed roller, some guide rollers and the material receiving roller being synchronized with the movement with described feed roller;
Hoistable platform, it is arranged between described feed roller and material receiving roller;
Laser cutting system, it is arranged at described hoistable platform top, and described laser cutting system comprises lasing light emitter, laser mirror, laser head;
Rolling mechanism, it is arranged at described hoistable platform top;
Computer, laser head control system.
10. the device of realizing porous tantalum workpiece manufacture method according to claim 9, is characterized in that, described rolling mechanism comprises hot-pressing roller.
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| CN201410088043.XA CN103862238B (en) | 2014-03-11 | 2014-03-11 | The manufacture method of porous tantalum workpiece and related device |
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| CN201410088043.XA CN103862238B (en) | 2014-03-11 | 2014-03-11 | The manufacture method of porous tantalum workpiece and related device |
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Cited By (6)
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| CN104741876A (en) * | 2015-03-25 | 2015-07-01 | 苏州大学 | Porous tantalum workpiece fiber weaving method |
| CN106513991A (en) * | 2016-12-05 | 2017-03-22 | 苏州大学 | Laser welding method for foamed aluminum alloy plate |
| CN106847511A (en) * | 2017-02-14 | 2017-06-13 | 中国科学院合肥物质科学研究院 | A kind of high-ratio surface tantalum capacitor anodes tantalum foil and preparation method thereof |
| CN106910635A (en) * | 2017-02-24 | 2017-06-30 | 中国科学院合肥物质科学研究院 | A kind of orderly hole array anode tantalum foil for tantalum capacitor and preparation method thereof |
| CN110091174A (en) * | 2019-06-13 | 2019-08-06 | 苏州大学 | A kind of fully automatic electric machine stator assembling line |
| CN110091174B (en) * | 2019-06-13 | 2024-05-10 | 苏州大学 | Full-automatic motor stator assembly production line |
| CN116288636A (en) * | 2023-02-06 | 2023-06-23 | 安徽格兰科新材料技术有限公司 | High-pressure-resistant ordered porous tantalum foil and preparation method and application thereof |
| CN116288636B (en) * | 2023-02-06 | 2024-05-03 | 安徽格兰科新材料技术有限公司 | High-pressure-resistant ordered porous tantalum foil and preparation method and application thereof |
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