CN106994513B - A kind of the vacuum heating-press sintering mold and its application method of cavity - Google Patents
A kind of the vacuum heating-press sintering mold and its application method of cavity Download PDFInfo
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- CN106994513B CN106994513B CN201710404173.3A CN201710404173A CN106994513B CN 106994513 B CN106994513 B CN 106994513B CN 201710404173 A CN201710404173 A CN 201710404173A CN 106994513 B CN106994513 B CN 106994513B
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- mold
- cavity
- mold cavity
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- vacuum heating
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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
- B22F3/12—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
- B22F3/1208—Containers or coating used therefor
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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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The present invention relates to the vacuum heating-press sintering molds and its application method of a kind of cavity, the device includes release part, die sleeve and pressing plate, each die sleeve is inverted round table cavity, and assembly is assembled into mold cavity by 2 type chamber half modules in cavity, and each mold cavity bottom sets the first cushion block；Match pressure head in each mold cavity, pressing plate is located on pressure head, it is sintered rear fender and is located at inverted mold bottom after taking-up pressure head, the second cushion block is set between die sleeve and pressing plate, release part is located at the top of vacuum heating-press sintering mold, and release part includes multiple ejector blocks, fixed plate and backing plate, and multiple ejector blocks are mounted on backing plate by fixed plate, the corresponding ejector block of each mold cavity, and each ejector block diameter is identical as the top end diameter of mold cavity.The present invention realizes the rapidly and efficiently demoulding of billet by the design and release part of multiple mold cavities and the close fit of mold, and reduces by the conical surface wedging power pressure that pressure head applies mold cavity, improves die life.
Description
Technical field:
The invention belongs to sintered powder technique fields, and in particular to a kind of vacuum heating-press sintering mold of cavity and its make
Use method.
Background technique:
The magnesium alloy materials of graphene enhancing become the hot spot studied now, and traditional casting method can not make graphite
Alkene sheet body is uniformly dispersed in solution, it is easy to reunites, and powder metallurgy becomes a kind of and extraordinary prepares graphene
The method of the magnesium-based composite material of enhancing, but since the material of traditional vacuum heating-press sintering mold is generally graphite type material,
In vacuum hotpressing, mold is easily damaged this kind of material, and in demoulding, if external force is excessive also to make mould inner wall and base
Ingot is damaged, and reduces the service life of mold, and most of vacuum heating-press sintering molds only one type chambers, is sintered efficiency
It is low.
Summary of the invention:
The present invention is to overcome drawbacks described above, provides the vacuum heating-press sintering mold and its application method of a kind of cavity, should
Device selects H13 heat resisting steel can be during once sintered by cavity design at four chambers as mold materials, while being sintered 4
A billet, and convenient and efficient demoulding had not only may be implemented in the structure of mold cavity, but also did not damaged billet and mold, reached extension mould
Have the purpose of service life, greatly reduces human and material resources, waste of time.
The technical solution adopted by the present invention is: a kind of vacuum heating-press sintering mold of cavity, vacuum heating-press sintering mould
Tool includes release part, die sleeve and pressing plate, is machined with multiple inverted round table cavity in die sleeve, in each inverted round table cavity
It is equipped with a mold cavity, each mold cavity is assembled by 2 type chamber half modules；
When vacuum heating-press sintering: each mold cavity bottom is equipped with the first cushion block；Each mold cavity have one therewith
The pressure head of cooperation, multiple pressure heads are connected by pressing plate；
When sintering terminates ejection molded product: taking out pressure head, vacuum heating-press sintering mold is inverted, and pressing plate is placed in vacuum hotpressing burning
The bottom for tying mold, is additionally provided with multiple second cushion blocks, the release part is located at vacuum heating-press sintering between die sleeve and pressing plate
The top of mold, the release part include multiple ejector blocks, fixed plate and backing plate, and multiple ejector blocks are mounted on by fixed plate
On backing plate, the corresponding ejector block of each mold cavity, and each ejector block diameter is identical as the top end diameter of mold cavity.
Preferably, the mold cavity is 4, and is arranged in the form of rectangular array.
Preferably, the fixed plate is connected by screw to backing plate, and the screw is evenly distributed in backing plate edge.
Preferably, the second cushion block is strip, is arranged by axial symmetry of pressing plate center line in pressing plate two sides.
Preferably, the draw taper α of the mold cavity is 3 °.
Preferably, first pad thickness is 20mm.
Preferably, the plate thickness is 30mm.
Preferably, the vacuum heating-press sintering mold is made of H13 heat resisting steel.
A kind of application method of the vacuum heating-press sintering mold of cavity,
Specific step is as follows:
2 type chamber half modules, the first cushion blocks are in turn mounted in each mold cavity, then die sleeve are put into very by the first step
In empty hot-pressed sintering furnace, pressure is respectively charged into after being put into the metal powder of equivalent on the first cushion block of each mold cavity bottom
Pressing plate is placed on each pressure head by head；
Second step closes the fire door of vacuum sintering funace, starts to vacuumize, and when being extracted into specified vacuum and spending, passes through pressure
Plate pressurizes to pressure head, and after being pressurized to specified pressure, vacuum sintering funace is begun to warm up, and is heated to assigned temperature and keeps
For a period of time, then start slowly to depressurize, until being decompressed to normal pressure；
Third step opens vacuum sintering funace, vacuum heating-press sintering mold is taken out from vacuum sintering furnace, then will pressure
Head takes out, and the second cushion block is placed between die sleeve and pressing plate；
Third step vacuum heating-press sintering mold adjusted inversion is placed on press machine by the 4th step, and by release part
In withstand on the first cushion block and type chamber half module at the top of each ejector block, when press machine, which is pressing against release part, to be moved downward, push away
Part block pushes down on the first cushion block, type chamber half module and billet and moves downward, and part is released；
5th step takes out type chamber half module, the first cushion block and billet from die sleeve, after 2 type chamber half modules are separated, obtains
Fine and close metal forming billet.
Preferably, the specified vacuum degree is 1Pa, and the specified pressure is 180~200Mpa, and the assigned temperature is
550 degrees Celsius, described a period of time is 2 hours.
The beneficial effects of the present invention are:
By the way that the mold cavity of traditional hot pressed sintering mold is changed to four, realization prepares billet with four times of speed,
The inner wall of each mold cavity uses cone structure, and is made of in each mold cavity two type chamber half modules, and the structure is not only
It can be convenient the demoulding of product, and the wedging power of the conical surface can reduce pressure head to wall of die cavity bring pressure, improve
Die life；By be arranged release part, can be convenient ground simultaneously by mold cavity type chamber half module and billet demould,
It is simple with structure, the inner wall of mold cavity and the surface of billet are not damaged, and high production efficiency is closed particularly suitable for magnesium alloy, aluminium
The sintering of the lower melting-point dusty material such as gold and its composite material.
Detailed description of the invention:
Schematic three dimensional views when Fig. 1 is sintering of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the C-C cross-sectional view of Fig. 2；
Fig. 4 is the schematic three dimensional views of release part of the invention；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is Fig. 5 B-B cross-sectional view；
Fig. 7 is that mold cavity takes out the top view that release part and the second cushion block are installed after pressure head is inverted；
Fig. 8 is the D-D cross-sectional view of Fig. 7；
Fig. 9 is the top view of pressing plate in Fig. 1；
Figure 10 is the cross-sectional view of Fig. 9 A-A；
Figure 11 is the top view of pressure head in Fig. 1；
Figure 12 is the E-E cross-sectional view of Figure 11；
Figure 13 is the top view of the type chamber half module in Fig. 1；
Figure 14 is the main view of type chamber half module；
Figure 15 is the top view of die sleeve in Fig. 1；
Figure 16 is the F-F echelon sectional view of Figure 15；
Figure 17 is the top view of ejector block in Fig. 7；
Figure 18 is the main view of ejector block；
Figure 19 is the top view of fixed plate in Fig. 7；
Figure 20 is the G-G cross-sectional view of Figure 19；
Figure 21 is the top view of backing plate in Fig. 7；
Figure 22 is the H-H cross-sectional view of Figure 21；
Wherein: pressing plate 1, pressure head 2, type chamber half module 3, die sleeve 4, the first cushion block 5, metal powder 6, ejector block 7, fixed plate 8,
Screw 9, backing plate 10, billet 11, the second cushion block 12.
Specific embodiment:
The present invention is further elaborated With reference to embodiment.
The vacuum heating-press sintering mold and its application method of a kind of cavity of the invention, it is contemplated that the fusing point of magnesium alloy compared with
Low, temperature when sintering is slightly below magnesium alloy fusing point, and the present invention selects H13 heat resisting steel as vacuum heating-press sintering mold, such as Fig. 1
To shown in Fig. 3, vacuum heating-press sintering mold includes release part, die sleeve 4 and pressing plate 1, is machined with multiple inverted round table in die sleeve 4
Cavity, each inverted round table cavity is built-in to be furnished with a mold cavity, and the present embodiment is situated between by taking 4 mold cavities as an example
It continues.
As shown in Figure 15 and Figure 16,4 mold cavities are evenly distributed on die sleeve 4 in the form of rectangular array, described
The draw taper α of mold cavity is 3 °, and each mold cavity is assembled by 2 type chamber half modules 3；As shown in Figure 13 and Figure 14,
The horizontal cross-section of the type chamber half module 5 is semi-circular shape, and 2 openings of type chamber half module 3 are oppositely arranged in mold cavity, and 2
The outer wall of type chamber half module 3 and the inner wall clearance fit of mold cavity, the inner wall of 2 type chamber half modules 3 are enclosed hollow cavity, shape
At hollow cavity be cylinder.
When vacuum heating-press sintering: each mold cavity bottom is equipped with the first cushion block 5, the first cushion block 5 and cavity bottom gap
Match, first cushion block 5 with a thickness of 20mm, metal powder 6 is located on the first cushion block 5；As is illustrated by figs. 11 and 12, Mei Gemo
Tool type is intracavitary the matching pressure head 2 used, and described 2 one end of pressure head is extend into mold cavity, and the other end is located at
Outside mold cavity；As shown in Figure 9 and Figure 10, the pressing plate 1 is rectangle, and multiple pressure heads 2 are connected by pressing plate 1, and pressing plate 1 is located at every
On the end of a 2 exposed junction of pressure head.
When sintering terminates ejection molded product: as shown in Figure 7 and Figure 8, taking out pressure head 2, vacuum heating-press sintering mold is inverted, institute
The top that release part is located at vacuum heating-press sintering mold is stated, pressing plate 1 is placed in the bottom of vacuum heating-press sintering mold, in die sleeve 4
Multiple second cushion blocks 12 are equipped between pressing plate 1, second cushion block 12 is strip, and quantity is 2 or 4, and with pressing plate 1
Center line is that axial symmetry is arranged in 1 two sides of pressing plate.
As shown in Figures 4 to 6, the release part includes multiple ejector blocks 7, fixed plate 8 and backing plate 10, such as Figure 17 to figure
Shown in 20, the fixed plate 8 is rectangle, and multiple ejector blocks 7 are mounted on backing plate 10 by fixed plate 8, each mold cavity pair
Answer an ejector block 7, ejector block 7 is completely attached to and is held out against with the first cushion block 5 and type chamber half module 3, and 7 diameter of each ejector block with
The top end diameter of mold cavity is identical, and when ejector block 7 moves downward, ejector block 7 can be extend into mold cavity, by type chamber
Half module 3, the first cushion block 5 are pushed to outside mold cavity；As shown in Figure 21 to Figure 22,10 shape of backing plate, size and fixed plate 8
Match, the backing plate 10 is with a thickness of 30mm, and identical as 8 shapes and sizes of fixed plate, the edge in 10 upper surface of backing plate is equal
It is dispersed with screw 9 evenly, fixed plate 8 and backing plate 10 are fixed together by screw 9.
A kind of application method of the vacuum heating-press sintering mold of cavity of the invention, the specific steps are as follows:
2 type chamber half modules 3, the first cushion block 5 are in turn mounted in each mold cavity, then die sleeve 4 are put by the first step
In vacuum sintering funace, it is respectively charged into after being put into the metal powder 6 of equivalent on the first cushion block 5 of each mold cavity bottom
Pressing plate 1 is placed on each pressure head 2 by pressure head 2；
Second step closes the fire door of vacuum sintering funace, starts to vacuumize, and when being extracted into specified vacuum and spending, passes through pressure
Plate 1 pressurizes to pressure head 2, and after being pressurized to specified pressure, vacuum sintering funace is begun to warm up, and is heated to assigned temperature and protects
A period of time is held, then starts slowly to depressurize, until being decompressed to normal pressure；
Third step opens vacuum sintering funace, vacuum heating-press sintering mold is taken out from vacuum sintering furnace, then will pressure
First 2 take out, and the second cushion block 12 is placed between die sleeve 4 and pressing plate 1；
Third step vacuum heating-press sintering mold adjusted inversion is placed on press machine by the 4th step, and by release part
In the top of each ejector block 7 withstand on the first cushion block 5 and type chamber half module 3, when press machine, which is pressing against release part, to be moved downward,
Ejector block 7 pushes down on the first cushion block 5, type chamber half module 3 and billet 11 and moves downward, and part is released；
5th step takes out type chamber half module 3, the first cushion block 5 and billet 11 from die sleeve 4, and 2 type chamber half modules 3 are separated
Afterwards, fine and close metal forming billet 11 is obtained.
The specified vacuum degree is 1Pa, and the specified pressure is 180~200Mpa, and the assigned temperature is 550 Celsius
Degree, described a period of time are 2 hours, and the billet 11 can form 4 simultaneously.
Although a specific embodiment of the invention is disclosed, its content is only to facilitate understand skill of the invention
Art scheme and use, be not intended to limit the present invention.Any those skilled in the art, it is disclosed not departing from
Under the premise of core technology scheme, any modification and variation can be made in form and details in implementation, but the present invention is limited
Protection scope, the appended claims that must still be subject to limit range.
Claims (2)
1. the vacuum heating-press sintering mold of a kind of application method of the vacuum heating-press sintering mold of cavity, the cavity includes
Release part, die sleeve (4) and pressing plate (1), die sleeve (4) is interior to be machined with multiple inverted round table cavity, each inverted round table type chamber
It is equipped with a mold cavity in vivo, each mold cavity is assembled by 2 type chamber half modules (3)；When vacuum heating-press sintering: every
A mold cavity bottom is equipped with the first cushion block (5)；Each mold cavity has a matched pressure head (2), multiple pressure heads
(2) it is connected by pressing plate (1)；When sintering terminates ejection molded product: taking out pressure head (2), vacuum heating-press sintering mold is inverted, pressing plate
(1) it is placed in the bottom of vacuum heating-press sintering mold, multiple second cushion blocks (12), institute are additionally provided between die sleeve (4) and pressing plate (1)
The top that release part is located at vacuum heating-press sintering mold is stated, the release part includes multiple ejector blocks (7), fixed plate (8)
With backing plate (10), multiple ejector blocks (7) are mounted on backing plate (10) by fixed plate (8), and each mold cavity corresponding one pushes away
Part block (7), and each ejector block (7) diameter is identical as the top end diameter of mold cavity, it is characterised in that:
Specific step is as follows:
2 type chamber half modules (3), the first cushion block (5) are in turn mounted in each mold cavity, then die sleeve (4) are put by the first step
To in vacuum sintering funace, the metal powder (6) that equivalent is put on the first cushion block (5) of each mold cavity bottom divides afterwards
Not Zhuan Ru pressure head (2), pressing plate (1) is placed on each pressure head (2)；
Second step closes the fire door of vacuum sintering funace, starts to vacuumize, and when being extracted into specified vacuum and spending, passes through pressing plate (1)
It pressurizes to pressure head (2), after being pressurized to specified pressure, vacuum sintering funace is begun to warm up, and is heated to assigned temperature and is protected
A period of time is held, then starts slowly to depressurize, until being decompressed to normal pressure；
Third step opens vacuum sintering funace, vacuum heating-press sintering mold is taken out from vacuum sintering furnace, then by pressure head
(2) it takes out, the second cushion block (12) is placed between die sleeve (4) and pressing plate (1)；
Third step vacuum heating-press sintering mold inversion adjusted is placed on press machine by the 4th step, and will be every in release part
It withstands on the first cushion block (5) and type chamber half module (3) at the top of a ejector block (7), is moved downward when press machine is pressing against release part
When, ejector block (7) pushes down on the first cushion block (5), type chamber half module (3) and billet (11) and moves downward, and part is released；
5th step is taken out type chamber half module (3), the first cushion block (5) and billet (11), by 2 type chamber half modules from die sleeve (4)
(3) after separating, fine and close metal forming billet (11) is obtained.
2. a kind of application method of the vacuum heating-press sintering mold of cavity as described in claim 1, it is characterised in that: described
Specified vacuum degree is 1Pa, and the specified pressure is 180~200MPa, when the assigned temperature is 550 degrees Celsius, described one section
Between be 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404173.3A CN106994513B (en) | 2017-06-01 | 2017-06-01 | A kind of the vacuum heating-press sintering mold and its application method of cavity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710404173.3A CN106994513B (en) | 2017-06-01 | 2017-06-01 | A kind of the vacuum heating-press sintering mold and its application method of cavity |
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| CN106994513A CN106994513A (en) | 2017-08-01 |
| CN106994513B true CN106994513B (en) | 2019-07-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107791431A (en) * | 2017-10-17 | 2018-03-13 | 哈尔滨理工大学 | A kind of back mode device applied to hot pressing die |
| CN109158595A (en) * | 2018-08-16 | 2019-01-08 | 东莞华晶粉末冶金有限公司 | A kind of method of compression moulding portable mold and products thereof compression moulding |
| CN110293224B (en) * | 2019-07-18 | 2021-07-27 | 广州番禺职业技术学院 | Metal craft ornament with mottled colors and manufacturing method thereof |
| CN113001720B (en) * | 2021-03-17 | 2022-11-01 | 陕西科技大学 | Hot-pressing sintering die and using method thereof |
| CN113084161B (en) * | 2021-03-30 | 2023-04-14 | 博深股份有限公司 | Universal sintering mold for powder metallurgy brake pad and using method |
| CN114871431B (en) * | 2022-05-10 | 2024-03-29 | 哈尔滨工业大学 | High-flux bar preparation device and application method thereof |
| CN114918413B (en) * | 2022-05-17 | 2024-03-29 | 哈尔滨工业大学 | Device, system and method for preparing block body in high flux |
| CN115769849A (en) * | 2022-11-27 | 2023-03-10 | 浙江宝刚糖排设备有限公司 | Mold type sugar block forming machine and application thereof |
Citations (3)
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|---|---|---|---|---|
| CN202984664U (en) * | 2012-12-31 | 2013-06-12 | 河南科技大学 | Sintering mold for hot-pressing and extruding |
| CN203184649U (en) * | 2013-04-26 | 2013-09-11 | 河南科技大学 | Hot pressing sintering mold |
| CN206747593U (en) * | 2017-06-01 | 2017-12-15 | 哈尔滨理工大学 | A kind of vacuum heating-press sintering mould of cavity |
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2017
- 2017-06-01 CN CN201710404173.3A patent/CN106994513B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202984664U (en) * | 2012-12-31 | 2013-06-12 | 河南科技大学 | Sintering mold for hot-pressing and extruding |
| CN203184649U (en) * | 2013-04-26 | 2013-09-11 | 河南科技大学 | Hot pressing sintering mold |
| CN206747593U (en) * | 2017-06-01 | 2017-12-15 | 哈尔滨理工大学 | A kind of vacuum heating-press sintering mould of cavity |
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