CN106493372A - The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium - Google Patents
The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium Download PDFInfo
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- CN106493372A CN106493372A CN201611050220.0A CN201611050220A CN106493372A CN 106493372 A CN106493372 A CN 106493372A CN 201611050220 A CN201611050220 A CN 201611050220A CN 106493372 A CN106493372 A CN 106493372A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F8/00—Manufacture of articles from scrap or waste metal particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
- B22F2003/208—Warm or hot extruding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The present invention proposes a kind of ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium, comprises the following steps：(1) titanium chip recycling pretreatment；(2) ball-milling treatment of titanium chip；(3) the jacket encapsulation of titanium chip；(4) room temperature of jacket encapsulation titanium chip is colded pressing；(5) bending channel extruding hot setting processing：Heating mould is to 570 600 DEG C, upper punch applies the extruding force of 0.9～1.0GPa, low punch applies the back pressure of 0.2GPa, under the squeezing action of upper low punch, the compound action that acutely strained when the titanium chip of jacket encapsulation is by bending channel and full densification solidifies, and cause to remanufacture the smooth demoulding of titanium, and thoroughly elimination porosity defects by the impetus of the pseudo- sample of fine aluminium, bending channel extruding repeats 2 times, to obtain the grained material of even tissue；(6) quench：Bending channel is extruded the block titanium obtained in hot setting procedure of processing room temperature is quickly quenching into by water-cooling pattern.
Description
Technical field
The present invention relates to metal material processing field, more particularly to a kind of ball milling of the discarded chip circular treatment of pure titanium-curved
Bent channel pressings curing.
Background technology
Titanium is the metals resources of high smelting cost, and its biocompatibility is excellent, corrosion resistance is good, mechanical property is suitable, is system
Make the important materials of medical apparatus and instruments, artificial joint, large-scale derived energy chemical container etc..But, in order to manufacture high accuracy Ti structure, need
The larger allowance of design, substantial amounts of raw material translate into discarded chip.Traditional high temperature founding process energy consumption is big, pollution
Weight, efficiency is low, and cast sturcture's coarse grains, poor-performing.Solid phase is circulated and is remanufactured because avoiding high temperature founding, is to realize gold
Category resource high-efficiency, an effective way of cleaning circulation.Found by the literature search to prior art, equal channel angular is squeezed
Pressure (Equal channel angular pressing, abbreviation ECAP) technology is applied to process borings, can refine crystalline substance
Grain, improves the microstructure form for remanufacturing material, improves mechanical performance.Lapovok etc. exists《Journal of Materials
Science》" Multicomponent materials from machining are delivered on 1193-1204 page of volume 49 within 2014
Chips compacted by equal-channel angular pressing are (by Equal-channel Angular Pressing chip formation system
Standby multi-component material) " text, it was recently reported that by being mutually mixed for aluminum chip and magnesium chip, by the multigroup division of ECAP circular regenerations
Golden material；Luo etc. exists《Journal of Materials Science》Deliver on 4606-4612 page of volume 45 within 2010
“Recycling of titanium machining chips by severe plastic deformation
Consolidation (the severe plastic deformation solid cycle of titanium chip) " texts, propose by reclaiming 2 grades of discarded titanium (ASTM
Grade 2) chips, and circulated by ECAP technology and remanufacture block materials.Additionally, Valiev and Langdon exist
《Metallurgical and Materials Transactions A-Physical Metallurgy and Materials
Science》" Achieving exceptional grain refinement are delivered on 2942-2951 page of volume 42 within 2011
though severe plastic deformation:new approaches for improving the processing
Technology " (realizes ultra-fine crystallization by severe plastic deformation：Improve the new way of process technology) text, propose to have and put down
The ECAP technology of row of channels, mould include two corners, and each corner is 120 degree.Extruded by single pass, just obtain～
2 total equivalent strain.Its Rate of strain accumulation and working (machining) efficiency improve about 2 times than conventional ECAP techniques.Chiba with
Yoshimura exists《Journal of Manufacturing Processes》" Solid- is delivered on 1-8 page of volume 17 within 2015
State recycling of aluminium alloy swarf into c-channel by hot extrusion " (by
C- passage hot extrusion solid cycle Aluminum Alloy Chips) text, using the chip of C- passage hot extrusion Al-Si alloy cast ingots.
First these chips are colded pressing and is prepared into column pressed compact, section bar extrusion is carried out using the hot extrusion of C- passages at 327 DEG C.1:18 squeeze
Under the conditions of pressure ratio (accumulation strain～4.3), the Al-Si alloy profiles of circulation eliminate metallurgical imperfection, realize the full densification of chip
Change.C- type section bar rather than block materials of the sample prepared by the hot extrusion of C- passages for thin-walled.
Ball milling (Ball milling, abbreviation BM) is a kind of severe plastic deformation for being widely used in and preparing superfine powdery material
Technology.Mahboubi Soufiani etc. exist to be found to the retrieval of prior art literature《Materials and Design》2012
" Formation mechanism and characterization of are delivered on 152-160 page of volume 37 of year
(prepared by mechanical alloying for nanostructured Ti6Al4V alloy prepared by mechanical alloying
The Forming Mechanism of Ti6Al4V alloy nanostructures and sign) " text, report with titanium, aluminum, vanadium micropowder as raw material, by BM skills
Art prepares the Ti-6Al-4V alloys of nanoscale (less than 100nm).Additionally, Zadra exists《Materials Science and
Engineering A》Deliver within 2013 that " Mechanical alloying of titanium be (titanium on 105-113 page of volume 583
Mechanical alloying) " text, Ti powder of the initial feed less than 150 μm, first by BM process, pure titanium of the acquisition less than 25 μm
Superfines, and block titanium is obtained by discharge plasma sintering.
The conventional art of discarded metal chip circular treatment is remelting and casting.However, high temperature founding energy consumption is big, pollution
Weight, efficiency is low, and cast sturcture's coarse grains, and mechanical performance is poor.For avoiding high temperature founding, solid-phase sintering mode can be adopted.
But, titanium (Ti) is the active metal for being easy to aoxidize, and its chip surface oxide is with TiO2Form is present, and which is strong but pliable in texture, though
So through multi-pass ECAP process rear oxidation thing can crush to a certain extent, disperse, but, the continuous distribution of larger oxide
The metallurgical imperfection in microstructure will be formed, weaken the mechanical performance of material.Also there is the refinement limit in ECAP processing, that is, work as dynamic
When recrystallization reaches balance with strain refinement effect, then ECAP will be difficult to make microstructure further be refined to nanoscale.And,
Under the conditions of 90 degree of corners, the equivalent strain that the processing of ECAP single pass is produced is about 1, and in order to add up to strain, palpus multi-pass is repeatedly
Extruding, therefore the Rate of strain accumulation of ECAP and working (machining) efficiency have much room for improvement.Meanwhile, superfine powder must carry out hot pressing after BM process
Sintering or powder squeeze/the subsequent treatment operation such as forging and stamping to obtain block materials, and in these operations, because heating (sintering) time
Long, and the impact of the factor such as dynamic recrystallization, grain coarsening will occur, weaken the strength of materials.Although the hot extrusion of C- passages is tired out
Product strains larger (～4.3), can eliminate the metallurgical imperfection of Al-Si alloy chip section bars, realize the full densification of chip.But make
C- type section bar rather than block materials of the standby sample for thin-walled.Above technical problem is not yet solved at present well.
Content of the invention
It is an object of the invention to provide the ball milling of the discarded chip circular treatment of pure titanium-bending channel extruding curing, with
Strain Accumulation and working (machining) efficiency is improved, the blocks of large Ti materials of full densification are prepared, the efficient, clear of discarded Ti chips is realized
Clean recycling.
The present invention for the solution technical scheme that adopts of its technical problem is,
The ball milling of the discarded chip circular treatment of pure titanium-bending channel extruding curing, comprises the following steps：
(1) titanium chip recycling pretreatment：Titanium chip raw material is cleaned using ethanol, to remove the oil in raw material
Dirty and impurity；
(2) ball-milling treatment of titanium chip：Pretreated titanium chip is inserted in the ball mill container for including steel ball, while plus
Enter process control agent, ball milling 10-20 hours under the protection of inert gas atmosphere, rotating speed is 280-350rpm；
(3) the jacket encapsulation of titanium chip：One layer of kollag of steel cylinder outer wrapping, drum diameter are straight less than bending channel
Steel cylinder-kollag is inserted cold stamping die by footpath, its diameter be less than bending channel diameter, by ball milling after titanium chip filling
Into steel cylinder cavity, then with hand press by chip preliminary consolidation；
(4) room temperature of jacket encapsulation titanium chip is colded pressing：The cold stamping die that titanium chip is encapsulated containing jacket is arranged on hydraulic pressure
On machine, drift is put into cold stamping die intake channel, and the pressure of constantly improve drift, to stopping pre-extrusion during～600MPa；
(5) bending channel extruding hot setting processing：To 570-600 DEG C, upper punch applies 0.9～1.0GPa to heating mould
Extruding force, low punch apply 0.2GPa back pressure, under the squeezing action of upper low punch, jacket encapsulation titanium chip pass through
The compound action that acutely strained during bending channel and full densification solidifies, and the impetus by fine aluminium puppet sample is caused
The smooth demoulding of titanium is remanufactured, and thoroughly eliminates porosity defects, bending channel extruding repeats 2 times, to obtain even tissue
Grained material；
(6) quench：Bending channel is extruded the block titanium obtained in hot setting procedure of processing to quench by water-cooling pattern
Fire is cooled to room temperature.
In step (1), the chip generated using the 2 grades of Ti obtained by end mill processing by Ti chips raw material, cleaning are adopted
The method of cleaning in ultrasonic activation groove is used in, ethanol used is 99.9% ethanol.
In step (2), between Ti chips and steel ball, mass ratio is 12-20:1, a diameter of 7-12mm of steel ball, process control
Agent is stearic acid or straight iron powder, and between 0.5-2wt%, noble gases are nitrogen, argon or helium to the addition of process control agent
Gas, passes to liquid nitrogen circulation in external container, and to reduce the friction temperature of chip-steel ball, and machine often runs 1-2 hours and suspends number
10-15 minutes.
In step (3), steel cylinder material is the rustless steel through making annealing treatment, and the kollag is graphite paper or stannum
Paper tinsel.
It is an advantage of the current invention that the method is first by BM technical finesse Ti chips, the oxide of chip surface
(TiO2) collision in steel ball, stranding are fully crushed under grinding.Then, solidify BM- at 570-600 DEG C by bending channel extrusion process
Ti chips.In bending channel extrusion die, design bending channel extruding path, under the squeezing action of upper low punch, jacket
The compound action that acutely strained when the Ti chips of encapsulation are by bending channel and full densification solidifies, and try by fine aluminium is pseudo-
The impetus of sample causes to remanufacture the smooth demoulding of Ti materials, and thoroughly eliminates porosity defects, and bending channel extruding may be repeated,
Extrude to obtain the block grained material of even tissue so as to pass through multi-pass.As extrusion temperature control is in the recrystallization temperature of Ti
Spend (～600 DEG C) below, therefore compared to other skills such as high temperature founding (～1200 DEG C) or discharge plasma sintering (～900 DEG C)
Art, the bending channel extrusion technique of the present invention can effectively suppress grain coarsening, after retaining BM process to the full extent
Ultra-fine microstructure.Using the technical finesse 2 grades of Ti (ASTM Grade 2) chip, by remanufacturing, the intensity of Ti materials is regenerated
It is higher than 2 grades of Ti business bars.The method is a kind of metals resources solid phase circular treatment technology of high-efficiency cleaning, which obviates high temperature
Founding, it is adaptable to carry out the recovery of the high smelting cost metals resources with Ti as representative and remanufacture.
Description of the drawings
Fig. 1 is showing for the ball milling-bending channel extruding curing of the discarded chip circular treatment of pure titanium proposed by the present invention
It is intended to, in figure, 1, upper punch, 2, bending channel extrusion die, 3, fine aluminium puppet sample, 4, titanium chip sample, 5, low punch.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Diagram and specific embodiment is closed, the present invention is expanded on further.
Embodiment：
1st, Ti chip recyclings pretreatment：The chip generated with 2 grades of Ti of end mill (ASTM Grade 2) is collected as raw material
After chip, using inductively coupled plasma atomic emission spectrum (Inductively coupled plasma atomic
Emission spectroscopy, abbreviation ICP-AES) its chemical composition (mass percent, wt.%) is analyzed, analysis result is such as
Shown in table 1.As shown in Table 1, meet ASTM standard scope through 2 grades of its chemical composition of Ti chips (oxygen content) of Milling Process.With
When, the ethanol using 99.9% cleans Ti chips in ultrasonic activation groove, to remove the greasy dirt in raw material and impurity etc..
2nd, the BM process of Ti chips：Steel BM containers are inserted in the Ti chips obtained by step (1), chip is (straight with steel ball
Footpath 10mm) between mass ratio be 15:1.Meanwhile, the stearic acid of 1wt.% is added as process control agent, and BM containers are filled with
Argon as protection atmosphere, to prevent chip over oxidation during BM.The rotating speed of planetary BM machines is 300rpm；BM is transported
Row total duration is 15 hours.During BM, Ti chips issue raw food weldering, harden and broken with stone roller is rubbed with the hands in the shock of steel ball.Logical
BM processing is crossed, Ti chip profiles size and oxide on surface are significantly refined.Meanwhile, by external container liquid nitrogen circulation with
Reduce the friction temperature of chip-steel ball, and machine often runs 1 hour and will suspend 12 minutes.After BM terminates, using ICP-AES
Analysis chip chemical composition, as a result as shown in table 1.As shown in Table 1, under argon protection, its oxygen contains the Ti chips through BM process
Amount only slightly rises (rising to 0.17wt% by 0.15wt%), and iron content rises to 0.64wt% by 0.10wt%, this be due to
Caused by during BM, steel ball (and steel vessel wall) is worn and is mixed into chip.
3rd, the jacket encapsulation of BM-Ti chips：Steel cylinder (material：Annealing rustless steel) one layer of graphite paper of outer wrapping (as
Kollag), the drum diameter is slightly less than bending channel diameter, and steel cylinder-kollag is inserted cold stamping die, and (which is straight
Footpath is slightly less than bending channel diameter), steel cylinder-kollag is inserted cold stamping die, the BM-Ti obtained by step (2) is cut
Bits are filled in steel cylinder cavity, then with hand press by chip preliminary consolidation.
4th, jacket encapsulates the room temperature pre-extrusion of BM-Ti chips：BM-Ti chips will be encapsulated by what step (3) obtained containing jacket
Cold stamping die install on a hydraulic press, drift is put into cold stamping die intake channel, and the pressure of constantly improve drift, to～
Stop pre-extrusion during 600MPa.This step can further improve the density of chip, prevent BM-Ti chips excessive in hot setting
Oxidation.Determine through Archimedes method (Archimedes), room temperature is colded pressing Ti chips its relative densities>99.0%.
5th, bending channel extruding hot setting processing：Mould is wrapped up with armouring electric blanket, the recrystallization temperature of Ti is heated to
(～600 DEG C) certain level (for example, 600 DEG C) below, and the scope by temperature controller equilibrium temperature at ± 1 DEG C carries out height
Temperature solidification processing.Processing speed～5mm/min.As Fig. 1, upper punch 1 apply the extruding force of 0.9～1.0GPa, low punch 5 applies
The back pressure of 0.2GPa, under the squeezing action of upper low punch, by the jacket encapsulation Ti chips 4 obtained by step (4) by curved
The compound action that acutely strained during triton road and full densification solidifies, and the impetus by fine aluminium puppet sample 3 is caused
The smooth demoulding of Ti materials is remanufactured, porosity defects are thoroughly eliminated, bending channel extruding repeats 2 times, to obtain even tissue
Grained material.
6th, quench：The block Ti materials obtained by step (5) hot setting are quickly quenching into room temperature by water-cooling pattern.
Determined by Archimedes method, block remanufactures Ti materials and realizes full densification (nearly 99.99%) of relative density.Sweeping
Multiple spot observation under ultramicroscope is retouched, do not it is found that microscopic void is present.Ti material chemical compositions, its result are analyzed using ICP-AES
As shown in table 1.As shown in Table 1, the oxygen content for remanufacturing Ti materials rises to 0.25wt% by the 0.15wt% of original chip, still approximately
Oxygen content in 2 grades of Ti (ASTM Grade 2).Meanwhile, by wire cutting～4.00 × 4.00 × 6.00mm samples, and ten thousand
Performance test can be carried out in Material Testing Machine, find yield strength 400-500MPa for remanufacturing Ti materials.
Table 1 is that BM process (BM-Ti) and bending channel extruding are remanufactured using the initial Ti chips of ICP-AES technical Analysis
The chemical composition of Ti chips afterwards.
Table 1
| Element | O | N | C | Fe |
| Initial Ti chips (wt.%) | 0.15 | <0.01 | <0.01 | 0.10 |
| BM-Ti chips (wt.%) | 0.17 | <0.01 | 0.22 | 0.64 |
| Bending channel extruding Ti chips (wt.%) | 0.25 | 0.02 | 0.24 | - |
Embodiment of above technology design only to illustrate the invention and feature, its object is to allow those skilled in the art
Member understands present disclosure and is carried out, and can not be limited the scope of the invention with this, all according to spirit of the invention
Equivalence changes or modification that essence is done, should all cover within the scope of the present invention.
Claims (4)
1. ball milling-the bending channel of the discarded chip circular treatment of pure titanium extrudes curing, it is characterised in that including following step
Suddenly：
(1) titanium chip recycling pretreatment：Titanium chip raw material is cleaned using ethanol, with remove the greasy dirt in raw material and
Impurity；
(2) ball-milling treatment of titanium chip：Pretreated titanium chip is inserted in the ball mill container for including steel ball, was simultaneously introduced
Program control preparation, ball milling 10-20 hours under the protection of inert gas atmosphere, rotating speed is 280-350rpm；
(3) the jacket encapsulation of titanium chip：One layer of kollag of steel cylinder outer wrapping, drum diameter, will less than bending channel diameter
Cold stamping die inserted by steel cylinder-kollag, its diameter be less than bending channel diameter, by ball milling after titanium chip be filled to steel cylinder
In cavity, then with hand press by chip preliminary consolidation；
(4) room temperature of jacket encapsulation titanium chip is colded pressing：The cold stamping die that titanium chip is encapsulated containing jacket is installed on a hydraulic press,
Drift is put into cold stamping die intake channel, and the pressure of constantly improve drift, to stopping pre-extrusion during～600MPa；
(5) bending channel extruding hot setting processing：To 570-600 DEG C, upper punch applies squeezing for 0.9～1.0GPa to heating mould
Pressure, low punch apply the back pressure of 0.2GPa, and under the squeezing action of upper low punch, the titanium chip of jacket encapsulation is by bending
The compound action that acutely strained during passage and full densification solidifies, and the impetus by fine aluminium puppet sample causes to make again
The smooth demoulding of titanium is made, and thoroughly eliminates porosity defects, bending channel extruding repeats 2 times, to obtain the thin of even tissue
Brilliant material；
(6) quench：The block titanium that bending channel extrudes acquisition in hot setting procedure of processing is quenched by water-cooling pattern cold
But to room temperature.
2. ball milling-the bending channel of the discarded chip circular treatment of pure titanium according to claim 1 extrudes curing, and which is special
Levy and be：
In step (1), the chip generated using the 2 grades of Ti obtained by end mill processing by Ti chips raw material, cleaning are adopted
The method of cleaning in ultrasonic activation groove, ethanol used is 99.9% ethanol.
3. ball milling-the bending channel of the discarded chip circular treatment of pure titanium according to claim 1 extrudes curing, and which is special
Levy and be：
In step (2), between Ti chips and steel ball, mass ratio is 12-20:1, a diameter of 7-12mm of steel ball, process control agent is
Stearic acid or straight iron powder, the addition of process control agent between 0.5-2wt%, noble gases be nitrogen, argon or helium,
External container passes to liquid nitrogen circulation, and to reduce the friction temperature of chip-steel ball, and machine often runs 1-2 hours and suspends number 10-15
Minute.
4. ball milling-the bending channel of the discarded chip circular treatment of pure titanium according to claim 1 extrudes curing, and which is special
Levy and be：
In step (3), steel cylinder material is the rustless steel through making annealing treatment, and the kollag is graphite paper or tinfoil paper.
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Cited By (4)
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| CN107414087A (en) * | 2017-05-09 | 2017-12-01 | 唐竹胜 | It is a kind of to be reduced directly iron powder using metallurgical solid waste and regenerate the method for iron powder injection moulding high strength machine parts |
| CN110000386A (en) * | 2019-05-23 | 2019-07-12 | 唐竹胜 | A method of balance weight iron or components blank are prepared using steel scrap thin material |
| CN110093634A (en) * | 2018-01-28 | 2019-08-06 | 上海奇谋能源技术开发有限公司 | A kind of method of physical recovering method electrolytic zinc-coated steel sheet anode scrap |
| CN118080856A (en) * | 2024-04-28 | 2024-05-28 | 合肥工业大学 | In-situ forming method for Y-shaped part made of aluminum-based composite material |
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| CN101850376A (en) * | 2010-06-08 | 2010-10-06 | 常州工学院 | Method and die for forward extrusion and variable diameter bending extrusion of magnesium alloy semi-solid billets |
| CN104313403A (en) * | 2014-10-31 | 2015-01-28 | 无锡海特铝业有限公司 | Aluminium alloy with high strength and excellent cutting property and preparation method thereof |
| CN105618501A (en) * | 2015-12-25 | 2016-06-01 | 上海电机学院 | Remanufacturing method for scrap titanium chips through ball milling-equal channel angularpressing |
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