CN107008897A - A kind of powder moulding mold and forming method - Google Patents
A kind of powder moulding mold and forming method Download PDFInfo
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- CN107008897A CN107008897A CN201710217933.XA CN201710217933A CN107008897A CN 107008897 A CN107008897 A CN 107008897A CN 201710217933 A CN201710217933 A CN 201710217933A CN 107008897 A CN107008897 A CN 107008897A
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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
- B22F3/03—Press-moulding apparatus therefor
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
Abstract
The invention discloses a kind of powder moulding mold and forming method, belong to field of powder metallurgy, the problems such as which solving the blank and product of existing powder compacting technology and have loose, stomata and Microinhomogeneity.The mould of the present invention includes sleeve mold and graphite bush；Described graphite bush is arranged in the central cavity of described sleeve mold, and the outer wall of described graphite bush is fitted with the inwall of described sleeve mold；Described graphite bush two ends are each provided with a seal cap；A sample cavity volume is formed between seal cap in described graphite bush, described in two；The method of the present invention includes the steps such as pelletized powder samples encapsulation, mould installion, circulating pressure shaping；The present invention can strengthen the diffusion of powdered ingredients, reaction, promote homogenization and the densification of composition and tissue, result in consistency very high product and blank；Also make full use of and excavate simultaneously the potentiality and feature of existing fatigue test machine equipment.
Description
Technical field
The invention belongs to field of powder metallurgy, specifically, it is related to a kind of powder moulding mold and forming method.
Background technology
Powder compacting technology has a wide range of applications.At present, most of powder technologies and method are all that application etc. is quiet
Pressure mode is molded, and the green density that this powder compacting technology is produced reaches can not continue to improve after bottleneck.
Chinese Patent Application No. 201220077213.0, the patent document in publication date on January 30th, 2013, discloses one kind
Powder hot forming mould, including：Former, pressure head, diplopore earthenware, graphite crucible, wherein：Former contacts matching with pressure head
Close, being introduced into thermocouple in assembling diplopore earthenware, diplopore earthenware in the circular hole set above former is used in graphite crucible
Sample carry out thermometric in situ.The scheme provided using the utility model embodiment, can carry out thermometric in situ to sample
On the basis of, improve mold work pressure.
Chinese Patent Application No. 03146328.2, the publication date 2004 year 2 month patent document of 4 days, discloses a kind of 316L
Powder of stainless steel hot press forming method, is first heated to 316L stainless steels pressed powder and mould, and is controlled respectively with thermocouple
The temperature of 316L stainless steels pressed powder and mould processed, 316L stainless steel pressed powder heating and temperature controls are 100 DEG C~140
DEG C, mould heating and temperature control is at 100 DEG C~160 DEG C；Mould inner wall is sprayed using electrostatic die wall lubrication device composite lubricated
Powder, the composite lubricated powder used, which is constituted, is：The graphite of 25%~75%EBS waxes+25%~75% or 25%~75%W-special
The graphite of wax+25%~75%, mould guide line ground connection, after composite lubricated powder spraying is finished, the 316L stainless steel pressures after heating
Powder processed pour into carried out in the die cavity of mould it is compressing.It the advantage is that：Higher density green compact can be obtained, preferable chi is reached
Very little required precision, it is simple to operate, suppress efficiency high.
Technical scheme disclosed in above-mentioned patent uses conventional powder forming method, it is impossible to break through the bottle of powder compact consistency
Neck, thus need to be further improved existing powder compacting technology.
The content of the invention
1st, the problem of solving
The problems such as having loose, stomata and Microinhomogeneity for the blank and product of existing powder compacting technology, the present invention
A kind of powder moulding mold and forming method are provided, by the way that powder moulding mold is installed on fatigue tester, to mould plus
Heat, then applies circulating pressure by fatigue tester, is pressed；According to dusty material concrete condition, circulating pressure
Waveform, size and frequency-adjustable, largest loop load be 100KN, frequency range is in 0.01~0.1Hz.Pass through the present invention's
Powder technology, carries out circulating pressure to powdered sample and extrudes repeatedly, strengthens diffusion, the reaction of powdered ingredients, promotes composition
Homogenization and densification with tissue, result in consistency very high product and blank；Also make full use of and excavate existing simultaneously
The potentiality and feature of fatigue test machine equipment.Powder moulding mold is simple in construction, and moulding process is easily operated, powder hot-pressing blank
With product with high consistency and quality.
2nd, technical scheme
To solve the above problems, the present invention is adopted the following technical scheme that.
A kind of powder moulding mold, including sleeve mold and graphite bush；Described graphite bush is arranged on described overcoat
In the central cavity of mould, the outer wall of described graphite bush is fitted with the inwall of described sleeve mold；Described graphite bush two
End is each provided with a seal cap；A sample cavity volume is formed between seal cap in described graphite bush, described in two.
Preferably, the profile of described sleeve mold is cylindric.
Preferably, one end of described sleeve mold is provided with the steady pin 4 for extending radially through sleeve mold 1.
A kind of method that powder compacting under circulating pressure is carried out using above-mentioned mould, is comprised the following steps：
Step 1, pelletized powder samples are encapsulated, and powdered sample is pressed into required ratio uniform mixes, and it is π r to take volume2H powder examination
Sample is put into graphite bush, and wherein r is the internal diameter of graphite bush, and h is the height between the seal cap described in two；Be fabricated to by
The internal model of graphite bush, seal cap and powdered sample composition；
Step 2, sleeve mold is fixed on the upper fixed pressure head of tired machine clamp, insertion steady pin will be described outer
Cover die is fixed on described upper fixed pressure head；
Step 3, the internal model after being encapsulated in step 1 is loaded from the lower section of the sleeve mold described in step 2；
Step 4, fatigue tester is opened, push-down head is withstood under the seal cap of internal model lower end, fatigue tester device drives
Pressure head is moved up, and internal model is sent into sleeve mold medium position, and now the seal cap of internal model upper end is contacted with the bottom of upper fixed pressure head；
Step 5, the three-stage heating furnace on fatigue machine is closed, and thermocouple 6 is installed；Setting temperature target 600~
1000 DEG C, it is 2~20 DEG C/min to set programming rate, is begun to warm up；
Step 6, the temperature of powdered sample is raised to after desired value in above-mentioned steps 5, starts insulation 30~60 minutes, then is carried out
Pressure forming；
Step 7, by fatigue machine software design patterns circulating pressure parameter, in selection pressure-pressure, i.e. powder preparing processes always
Pressure in alternation；Frequency range of choice 0.01Hz~0.1Hz, it is as follows that pressure applies formula：
σ=σasin(2πf·t)+σm
In formula, σ：Circulating pressure；f：The frequency of CYCLIC LOADING, takes 0.01~0.1Hz；t：Time；σa：Stress amplitude, takes
200~300Mpa；σm：Mean stress, is constant, takes 900~1100MPa；
Start to apply circulating pressure, first carry out the pulsating stress hot pressing of 5-10 hours, the grade and then carried out 1-2 hours should
Power hot pressing, pressure is 1000~1200Mpa；
Step 8, after cooling, steady pin 4 is taken out, mobile push-down head 9 unloads internal model, takes out powdered sample, be densified
Powder compacting blank.
Preferably, in step 4 push-down head driving internal model move up process pass through fatigue tester device software display contact shape
State, is pressurized if sample is in, shows that sample two is contacted with two pressure heads.
Preferably, 1~2KN prestressing force, the position of fixed powdered sample are applied to internal model by push-down head.
Preferably, powder one kind is in keeping warm mode during pressure forming in step 6
3rd, beneficial effect
Compared to prior art, beneficial effects of the present invention are：
(1) present invention is heated by the way that powder moulding mold is installed on fatigue tester to mould, and maximum temperature is reachable
To 1000 DEG C, circulating pressure is then applied by fatigue tester, is pressed；According to dusty material concrete condition, follow
Waveform, size and the frequency-adjustable of ring compression, largest loop load are 100KN, and frequency range is in 0.01~0.1Hz.By this
The powder technology of invention, carries out circulating pressure to powdered sample and extrudes repeatedly, strengthens diffusion, the reaction of powdered ingredients, promotees
Enter homogenization and the densification of composition and tissue, result in consistency very high product and blank；Also make full use of and dig simultaneously
Dig the potentiality and feature of existing fatigue test machine equipment.Powder moulding mold is simple in construction, and moulding process is easily operated, powder heat
Pressed compact material and product have high a consistency and quality；
(2) present invention is compared with traditional isostatic pressed powder technology, and powder technology of the invention obtains hot pressing
Blank consistency is high；
(3) mould structure of powder technology of the present invention is simple, and moulding process is simple, suppresses efficiency high；
(4) powder moulding mold of the present invention is connected with fatigue test machine clamp, by carrying for fatigue machine servo power system
For pulsating stress, the potentiality and feature of existing fatigue test machine equipment are excavated.
Brief description of the drawings
Fig. 1 is the structural representation of powder moulding mold of the present invention；
Fig. 2 is E-E line sectional views in Fig. 1；
Fig. 3 is powder moulding mold use state figure of the present invention；
Fig. 4 is powder moulding mold use state outside drawing of the present invention；
Fig. 5 is circulating pressure oscillogram in the inventive method；
Fig. 6 prepares SEM (SEM) figure of sample for powder in the embodiment of the present invention 1；
Fig. 7 prepares SEM (SEM) figure of sample for powder in the embodiment of the present invention 2.
In figure：1st, sleeve mold；2nd, seal cap；3rd, graphite bush；4th, steady pin；5th, powdered sample；6th, thermocouple；7th, it is upper solid
Level pressure head；, 8, fixture；9th, push-down head；10th, fatigue machine servo power system connection end；11st, three-stage heating furnace.
Embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of powder moulding mold, including sleeve mold 1；The profile of described sleeve mold 1 is cylindric；Bag
Include graphite bush 3；Described graphite bush 3 is arranged on the central cavity inwall of described sleeve mold 1；Described graphite bush 3
Two ends are each provided with a seal cap 2；Placed in the sample cavity volume between seal cap 2 in described graphite bush 3, described in two
Powdered sample 5 to be pressed；One end of described sleeve mold 1 is additionally provided with the steady pin 4 for extending radially through sleeve mold 1；
As shown in Fig. 2 the outer wall of described graphite bush 3 is fitted with the central cavity inwall of described sleeve mold 1, it is described
Powdered sample 5 be placed in described graphite bush 3.
The method of powder compacting, comprises the following steps under a kind of circulating pressure：
Step 1, pelletized powder samples are encapsulated, and powdered sample 5 is pressed into required ratio uniform mixes, and it is π r to take volume2H powder examination
Sample 5 is put into graphite bush 3, and wherein r is the internal diameter of graphite bush 3, and h is the height between the seal cap 2 described in two；Graphite
The two ends of sleeve pipe 3 put seal cap 2, as shown in figure 3, in being fabricated to and being made up of graphite bush 3, seal cap 2 and powdered sample 5
Mould；
Step 2, as shown in figure 3, sleeve mold 1 is fixed on the upper fixed pressure head 7 of tired machine clamp 8, insertion is solid
Rationed marketing 4 is fixed on described sleeve mold 1 on described upper fixed pressure head 7；
Step 3, the internal model after being encapsulated in step 1 is loaded from the lower section of the sleeve mold 1 described in step 2；
Step 4, fatigue tester is opened, the push-down head 9 on fatigue machine servo power system connection end 10 is withstood
The seal cap 2 of internal model lower end, fatigue tester device drives push-down head 9 is moved up, and internal model is sent into the medium position of sleeve mold 1, this
When internal model upper end seal cap 2 contacted with the bottom of upper fixed pressure head 7；The process is shown by fatigue tester device software and connect
The state of touching, is pressurized if sample is in, shows that sample two is contacted with two pressure heads；Apply 1~2KN prestressing force, Gu
Determine the position of powdered sample 5；
Step 5, as shown in figure 4, closing the three-stage heating furnace 11 on fatigue machine, and thermocouple 6 is installed；Temperature mesh is set
600~1000 DEG C of scale value, it is 2~20 DEG C/min to set programming rate, is begun to warm up；
Step 6, the temperature of powdered sample 5 is raised to after desired value in above-mentioned steps 5, starts insulation 30~60 minutes so that
Being heated evenly of sample, then carry out powder one kind during pressure forming, pressure forming and be in keeping warm mode；
Step 7, by fatigue machine software design patterns circulating pressure parameter, it is typically chosen in pressure-pressure, i.e. powder preparing processes
It is constantly in the pressure of alternation；Frequency range of choice 0.01Hz~0.1Hz, it is as follows that pressure applies formula：
σ=σasin(2πf·t)+σm
Waveform is as shown in Figure 5；In formula, σ：Circulating pressure, f：The frequency of CYCLIC LOADING, t：Time, σ a：Stress amplitude, σm：
Mean stress is constant；
In powder compaction process, frequency is typically chosen 0.01~0.1Hz, and average compression is 900~1100MPa,
Stress amplitude is 200~300Mpa；Higher average compressive stress is remained during compacting, is conducive to powder densification,
It is subject to the stress amplitude of 200~300Mpa scopes simultaneously, promotes micro components diffusion reaction, the gas of release reaction removes stomata,
Increase the uniformity and consistency of product；
Start to apply circulating pressure, first carry out the pulsating stress hot pressing of 5-10 hours, the grade and then carried out 1-2 hours should
Power hot pressing, pressure is 1000~1200MPa, is conducive to the stabilization of blank tissue and performance；Pulsating stress such as is changed at the pressure mistake
Journey is by setting pressure parameter to automatically control；
Step 8, after cooling, steady pin 4 is taken out, mobile push-down head 9 unloads internal model, takes out powdered sample 5, obtain densification
The powder compacting blank of change.
The present invention is further described below with reference to specific embodiment.
Embodiment 1
The method of powder compacting, comprises the following steps under a kind of circulating pressure：
Step 1, pelletized powder samples are encapsulated, by magnesium (Mg) part and boron (B) part according to mol ratio 1：2 are mixed and made into powdered sample 5,
Take volume about 37680mm3Powdered sample 5 be put into graphite bush 3, the two ends of graphite bush 3 put seal cap 2, such as Fig. 3 institutes
Show, be fabricated to the internal model being made up of graphite bush 3, seal cap 2 and powdered sample 5；
Step 2, as shown in figure 3, sleeve mold 1 is fixed on the upper fixed pressure head 7 of tired machine clamp 8, insertion is solid
Rationed marketing 4 is fixed on described sleeve mold 1 on described upper fixed pressure head 7；
Step 3, the internal model after being encapsulated in step 1 is loaded from the lower section of the sleeve mold 1 described in step 2；
Step 4, fatigue tester is opened, push-down head 9 withstands the seal cap 2 of internal model lower end, fatigue tester device drives
Push-down head 9 is moved up, and internal model is sent into the medium position of sleeve mold 1, now the seal cap 2 of internal model upper end and the bottom of upper fixed pressure head 7
Portion is contacted；The process shows contact condition by fatigue tester device software, is pressurized if sample is in, shows sample two
Head is contacted with two pressure heads；Apply 1~2KN prestressing force, the position of fixed powdered sample 5；
Step 5, heating parameters are set；The three-stage heating furnace 11 on fatigue machine is closed, and thermocouple 6 is installed, specifically such as
Shown in Fig. 4；It is 600 DEG C to set powder press temperature desired value, and heating rate is 20 DEG C/min, is begun to warm up；600 DEG C of heating
30 minutes are incubated afterwards, pulsating stress is then carried out hot-forming；
Step 6, by fatigue machine software design patterns circulating pressure parameter, pressure-pressure, frequency range of choice 0.01Hz- are selected
0.1Hz, it is as follows that pressure applies formula：σ=σasin(2πf·t)+σm
The Loaded contact analysis selected in the present embodiment is sine wave, and frequency is 0.01Hz, and mean stress is 900MPa, stress amplitude
It is 1100MPa for ± 200, i.e. maximum crushing stress, minimum compression is 700Mpa；The time for circulating hot pressing is 5 hours；Immediately
, pressure system stops circulating pressure, switch to wait pressure, pressure is 1100MPa, start to wait pressure forming, time 2 h；
Step 7, after cooling, steady pin 4 is taken out, mobile push-down head 9 unloads internal model, takes out powdered sample 5, obtain densification
The powder compacting blank of change, is illustrated in figure 6 SEM (SEM) photo that powder prepares sample, as seen from the figure, magnesium
Boron powder shaping blank has higher consistency relative to general powder technology.
Embodiment 2
The method of powder compacting, comprises the following steps under a kind of circulating pressure：
Step 1, pelletized powder samples are encapsulated.Melamine (C3H6N6) powdered sample 5 is pressed into, take volume about 37680mm3
Powdered sample 5 be put into graphite bush 3, the two ends of graphite bush 3 put seal cap 2, as shown in figure 3, being fabricated to by graphite cannula
The internal model that pipe 3, seal cap 2 and powdered sample 5 are constituted；
Step 2, as shown in figure 3, sleeve mold 1 is fixed on the upper fixed pressure head 7 of tired machine clamp 8, insertion is solid
Rationed marketing 4 is fixed on described sleeve mold 1 on described upper fixed pressure head 7；
Step 3, the internal model after being encapsulated in step 1 is loaded from the lower section of the sleeve mold 1 described in step 2；
Step 4, fatigue tester is opened, push-down head 9 withstands the seal cap 2 of internal model lower end, fatigue tester device drives
Push-down head 9 is moved up, and internal model is sent into the medium position of sleeve mold 1, now the seal cap 2 of internal model upper end and the bottom of upper fixed pressure head 7
Portion is contacted；The process shows contact condition by fatigue tester device software, is pressurized if sample is in, shows sample two
Head is contacted with two pressure heads；Apply 1~2KN prestressing force, the position of fixed powdered sample 5；
Step 5, heating parameters are set；The three-stage heating furnace 11 on fatigue machine is closed, and thermocouple 6 is installed, specifically such as
Shown in Fig. 4；It is 1000 DEG C to set powder press temperature desired value, and heating rate is 15 DEG C/min, is begun to warm up；Heating 1000
40 minutes are incubated after DEG C, pulsating stress is then carried out hot-forming；
Step 6, by fatigue machine software design patterns circulating pressure parameter, pressure-pressure, frequency range of choice 0.01Hz- are selected
0.1Hz, it is as follows that pressure applies formula：σ=σ asin (2 π ft)+σm
The Loaded contact analysis selected in the present embodiment is sine wave, and frequency is 0.05Hz, and mean stress is 1100MPa, stress
Width is that ± 200, i.e. maximum crushing stress are 1300MPa, and minimum compression is 900Mpa；The time for circulating hot pressing is 10 hours；Tightly
Then, pressure system stops circulating pressure, switchs to wait pressure, pressure is 1200MPa, starts to wait pressure forming, time 2 h；
Melamine (C in this step3H6N6) circulate herein under hot pressing condition, promote molecule aggregation reaction to discharge ammonia
(NH3), be conducive to gas to discharge in the process of circulating pressure reduction, circulating pressure increase process is remained after gas is discharged
Stomata is compacted, and is conducive to powder curing and densification；
Step 7, after cooling, steady pin 4 is taken out, mobile push-down head 9 unloads internal model, takes out powdered sample 5, obtain densification
The powder compacting blank of change, is illustrated in figure 7 SEM (SEM) photo that powder prepares sample, as seen from the figure, three
Poly cyanamid (C3H6N6) obtain fine and close, the uniform blank with lamellar structure by circulating hot pressing.
Claims (7)
1. a kind of powder moulding mold, it is characterised in that：Including sleeve mold (1) and graphite bush (3)；Described graphite bush
(3) in the central cavity for being arranged on described sleeve mold (1), the outer wall and described sleeve mold (1) of described graphite bush (3)
Inwall laminating；Described graphite bush (3) two ends are each provided with a seal cap (2)；In described graphite bush (3), two
A sample cavity volume is formed between described seal cap (2).
2. a kind of powder moulding mold according to claim 1, it is characterised in that：The profile of described sleeve mold (1) is
It is cylindric.
3. a kind of powder moulding mold according to claim 2, it is characterised in that：One end of described sleeve mold (1) is set
It is equipped with the steady pin 4 for extending radially through sleeve mold 1.
4. the method that the mould described in a kind of use claim 3 carries out powder compacting under circulating pressure, comprises the following steps：
Step 1, pelletized powder samples are encapsulated, and powdered sample is pressed into required ratio uniform mixes, and it is π r to take volume2H powdered sample is put into
In graphite bush (3), wherein r is the internal diameter of graphite bush (3), and h is the height between the seal cap (2) described in two；Make
Into the internal model being made up of graphite bush (3), seal cap (2) and powdered sample；
Step 2, sleeve mold (1) is fixed on the upper fixed pressure head (7) of tired machine clamp (8), insertion steady pin (4) will
Described sleeve mold (1) is fixed on described upper fixed pressure head (7)；
Step 3, the internal model after being encapsulated in step 1 is loaded from the lower section of the sleeve mold (1) described in step 2；
Step 4, fatigue tester is opened, push-down head (9) withstands the seal cap (2) of internal model lower end, fatigue tester device drives
Push-down head (9) is moved up, and internal model is sent into sleeve mold (1) medium position, now the seal cap (2) of internal model upper end and upper fixed pressure head
(7) bottom contact；
Step 5, the three-stage heating furnace (11) on fatigue machine is closed, and thermocouple (6) is installed；Setting temperature target 600~
1000 DEG C, it is 2~20 DEG C/min to set programming rate, is begun to warm up；
Step 6, the temperature of powdered sample is raised to after desired value in above-mentioned steps 5, starts insulation 30~60 minutes, then carries out pressure
Shaping；
Step 7, by fatigue machine software design patterns circulating pressure parameter, it is constantly in selection pressure-pressure, i.e. powder preparing processes
The pressure of alternation；Frequency range of choice 0.01Hz~0.1Hz, it is as follows that pressure applies formula：
σ=σasin(2πf·t)+σm
In formula, σ：Circulating pressure, f：The frequency of CYCLIC LOADING, takes 0.01~0.1Hz；t：Time；σa：Stress amplitude, take 200~
300Mpa；σm：Mean stress, is constant, takes 900~1100MPa；
Start to apply circulating pressure, first carry out the pulsating stress hot pressing of 5-10 hours, and then carry out the iso-stress heat of 1-2 hours
Pressure, pressure is 1000~1200Mpa；
Step 8, after cooling, steady pin (4) is taken out, mobile push-down head (9) unloads internal model, takes out powdered sample, be densified
Powder compacting blank.
5. the method for powder compacting under a kind of circulating pressure according to claim 4, it is characterised in that：Pushed in step 4
Head (9) driving internal model moves up process and shows contact condition by fatigue tester device software, is pressurized if sample is in, table
Bright sample two is contacted with two pressure heads.
6. the method for powder compacting under a kind of circulating pressure according to claim 5, it is characterised in that：Pass through push-down head
(9) 1~2KN prestressing force, the position of fixed powdered sample are applied to internal model.
7. the method for powder compacting under a kind of circulating pressure according to claim 6, it is characterised in that：Pressure in step 6
Powder one kind is in keeping warm mode in forming process.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516571A (en) * | 2017-09-15 | 2017-12-26 | 珠海群创新材料技术有限公司 | A kind of inductor, the preparation method of inductor, the shaping mould of compacting inductor |
| CN109109142A (en) * | 2018-09-04 | 2019-01-01 | 北京中材人工晶体研究院有限公司 | A kind of hot pressed sintering AlON crystalline ceramics graphite jig |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU984676A1 (en) * | 1981-04-09 | 1982-12-30 | Белорусский Ордена Трудового Красного Знамени Политехнический Институт | Method and apparatus for cyclic pressing of elongated powder articles |
| CN102260802A (en) * | 2011-07-20 | 2011-11-30 | 佛山市钜仕泰粉末冶金有限公司 | Target preparation device and target processing method thereof |
| CN202571280U (en) * | 2012-04-12 | 2012-12-05 | 北京工业大学 | Mould for discharge plasma sintering equipment |
| CN203061876U (en) * | 2013-02-19 | 2013-07-17 | 成都超纯应用材料有限责任公司 | Hot-press sintering die with inner lining |
-
2017
- 2017-04-05 CN CN201710217933.XA patent/CN107008897A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU984676A1 (en) * | 1981-04-09 | 1982-12-30 | Белорусский Ордена Трудового Красного Знамени Политехнический Институт | Method and apparatus for cyclic pressing of elongated powder articles |
| CN102260802A (en) * | 2011-07-20 | 2011-11-30 | 佛山市钜仕泰粉末冶金有限公司 | Target preparation device and target processing method thereof |
| CN202571280U (en) * | 2012-04-12 | 2012-12-05 | 北京工业大学 | Mould for discharge plasma sintering equipment |
| CN203061876U (en) * | 2013-02-19 | 2013-07-17 | 成都超纯应用材料有限责任公司 | Hot-press sintering die with inner lining |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516571A (en) * | 2017-09-15 | 2017-12-26 | 珠海群创新材料技术有限公司 | A kind of inductor, the preparation method of inductor, the shaping mould of compacting inductor |
| CN109109142A (en) * | 2018-09-04 | 2019-01-01 | 北京中材人工晶体研究院有限公司 | A kind of hot pressed sintering AlON crystalline ceramics graphite jig |
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