CN110014132A - The high squeeze casting mould of yields - Google Patents
The high squeeze casting mould of yields Download PDFInfo
- Publication number
- CN110014132A CN110014132A CN201810012734.XA CN201810012734A CN110014132A CN 110014132 A CN110014132 A CN 110014132A CN 201810012734 A CN201810012734 A CN 201810012734A CN 110014132 A CN110014132 A CN 110014132A
- Authority
- CN
- China
- Prior art keywords
- cover half
- hole
- slag trap
- slag
- dynamic model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009716 squeeze casting Methods 0.000 title claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 85
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 24
- 229910052751 metal Inorganic materials 0.000 abstract description 24
- 238000005266 casting Methods 0.000 abstract description 4
- 238000004512 die casting Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 238000000465 moulding Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of squeeze casting moulds that yields is high, its key points of the technical solution are that: including dynamic model and cover half, type core is convexly equipped on dynamic model, type chamber is provided on cover half, when dynamic model and cover half are interlocked, type core extend into the intracavitary portion of type and forms the die cavity for being used for shaped article, cover half is equipped with through-hole on the end face of dynamic model, and through-hole is connected with die cavity, through hole is provided with sprue bush, and sprue bush extends towards die cavity side, it further include pushing off the slag part, pushing off the slag part includes slag trap and actuator, slag trap sliding is connected to inside cover half, when slag trap stretches to inside through-hole, the length that slag trap is exposed to through-hole inner hole wall is greater than the width of sprue bush；Actuator is arranged in cover half side-walls, and actuator output end extend into inside cover half and is connected with slag trap, in this way during molten metal is injected into mold cavity, condensate layer is not easily accessible mold cavity, so that the product mechanical property with higher that casting is completed, yields are higher.
Description
Technical field
The present invention relates to squeeze casting mould technical field, in particular to a kind of squeeze casting mould that yields is high.
Background technique
Die casting refers to metal liquid filling mold cavity under high pressure, and is cooled and shaped under high pressure, forms institute
Need the casting method of product.Die casting has adapted to product in modern manufacturing industry and has complicated, is smart as a kind of components forming technique
Densification, lightweight, energy-saving, greenization requirement, application field constantly widens.
Currently, the Chinese patent that notification number is CN106735057A discloses a kind of die casting, it includes dynamic model, socket
Dynamic model cage plate, cover half on dynamic model, the cover half cage plate being set on cover half are provided with type core, the cover half on the dynamic model
On be provided with type chamber, when dynamic model and cover half are interlocked, type core extend into the intracavitary portion of type and forms the die cavity for being used for shaped article,
The second through-hole is equipped on the solid plate, and the second through-hole is internally provided with sprue bush.It is given birth to using the die casting
When production, molten metal liquid is pressed into mold cavity from sprue bush by the shot sleeve of die casting machine.But molten metal with
When sprue bush inner wall contacts, since the temperature of sprue bush is lower, molten metal solidifies to form the harder condensate layer of quality and be attached to
On the inner wall of sprue bush.Condensate layer can enter mold cavity under the thrust of shot sleeve later.In this way in mold cavity
Product be cooled and shaped when, the condensate layer of interiors of products can impact the institutional framework of product, reduce the mechanical property of product
Can, so that product is easy to appear fracture in use process.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of extrusion casint mould that yields is high
Tool, the advantage of mold cavity is not easily accessible with condensate layer.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of extruding that yields is high casting
Modeling has, including dynamic model and cover half, is convexly equipped with type core on the dynamic model, type chamber is provided on the cover half, when dynamic model and determines
When mould is interlocked, type core extend into the intracavitary portion of type and forms the die cavity for being used for shaped article, and the cover half deviates from the end face of dynamic model
On be equipped with through-hole, and through-hole is connected with die cavity, and the through-hole is provided with sprue bush at the aperture of dynamic model side, and pours
Muzzle extends towards die cavity side, further includes pushing off the slag part, and the pushing off the slag part includes slag trap and actuator, and the slag trap is sliding
Shifting is connected to inside cover half, and the slag trap works as slag trap for stretching to inside through-hole and offseting with the end of sprue bush
When stretching to inside through-hole, the length that slag trap is exposed to through-hole inner hole wall is greater than the width of sprue bush；The actuator setting
In cover half side-walls, and the actuator output end extend into inside cover half and is connected with slag trap.
Through the above technical solutions, passing through drive when needing to carry out Die Casting to product using the squeeze casting mould
Moving part controls slag trap towards the movement of through-hole side, so that the end of slag trap protrudes from the inner hole wall of through-hole.Pass through pressure later
Molten metal liquid is flowed into mold cavity via sprue bush by the shot sleeve of casting machine.When molten metal flows into sprue bush, melt
The molten metal melted contacts and condenses to form condensate layer with the lower sprue bush of temperature, and end and pushing off the slag of the condensate layer close to die cavity
Plate abuts against.In this way during molten metal is injected into mold cavity by shot sleeve, slag trap, which can apply condensate layer, is pressed
Power, so that condensate layer rests on inside sprue bush always, so that molding product mechanical property is preferable, product is not easy using
Deform the case where being even broken in journey, improves the yields of the squeeze casting mould to a certain extent.
Preferably, it the number at least two of the pushing off the slag part and is uniformly distributed centered on through-hole in circumferential.
Through the above technical solutions, the number at least two of pushing off the slag part, in this way can generate sprue bush inside cold
Solidifying layer provides more stable restriction effect, is further ensured that condensate layer will not enter mold cavity and form to mold cavity
The structural strength of product impact.
Preferably, the slag trap is provided with arc groove on the end of through-hole, when slag trap mutually pushes against, gear
Arc groove on slag plate is connected and forms circular hole, and Circularhole diameter is less than the inner ring diameter of sprue bush.
Through the above technical solutions, the arc groove on slag trap is interconnected and forms circle when slag trap mutually pushes against
Hole, in this way during using the mold, slag trap can entirely limit condensate layer close to the end face of die cavity, to protect
Card condensate layer is not easily accessible mold cavity and impacts to the structural strength of molding product.
Preferably, the arc groove is close to the notch of die cavity side through round corner treatment.
Through the above technical solutions, notch of the arc groove close to die cavity side is handled through rounding angle, the hole of such circular hole
Diameter is gradually increased towards die cavity side, and during molten metal bath flows through circular hole, the speed of molten metal is gradually decreased.This
The molten metal that sample is flowed through from sprue bush is not easy to cause to impact to the molten metal of mold cavity so that molding product it is finer and close and
Structural strength with higher further improves the yields of the squeeze casting mould.
Preferably, the cover half is internally provided with guide sleeve, and the slag trap sliding is connected to inside guide sleeve, described to lead
Be provided with limiting slot to set inner wall, be convexly equipped with limited block on the slag trap side wall, the limited block be used for in limiting slot
Cell wall offsets and then is defined to the limit slip locations of slag trap.
Through the above technical solutions, guide sleeve can be to gear controlling slag trap towards during the movement of through-hole side
The glide direction of slag plate is limited, so that slag trap, which is less prone between offset and slag trap, to be accurately aimed at, and pushing off the slag
Condensate layer can be blocked in inside sprue bush by plate.During slag trap carries out mobile towards through-hole side, on slag trap
Limited block can offset with the internal groove side wall of limiting slot so that slag trap be not easy to protrude into it is excessive inside through-hole and then when reducing unit
Between inner metal liquid enter the amount of die cavity, ensure that the service efficiency of the squeeze casting mould to a certain extent.
Preferably, the actuator includes attachment base and drive cylinder, and the attachment base passes through bolt and limited block phase
Even, the drive cylinder is bolted on the side wall of cover half, and the drive cylinder piston rod is extend into inside cover half simultaneously
It is connected with attachment base.
Through the above technical solutions, need to control slag trap moved when, it is only necessary to control drive cylinder piston rod
Elongation is shortened, and use process is more convenient.Drive cylinder piston rod is connected by attachment base with slag trap, so that driving
The assembling process of moving part becomes more convenient, and the connection between drive cylinder and slag trap is more stable.
Preferably, the attachment base is towards being provided with the installation protruded into for drive cylinder piston rod on the end face of drive cylinder
Slot, and mounting groove deviates from the end face of dynamic model through attachment base, the mounting groove is towards projection at the notch of drive cylinder side
There is block, is provided with the annular groove protruded into for block on the drive cylinder piston rod side wall.
Through the above technical solutions, the piston rod for controlling drive cylinder is opposite with mounting groove when assembling actuator, and drive
Annular groove on dynamic oil cylinder is opposite with block, controls drive cylinder piston rod later and extend into inside mounting groove, and block is extend into
Inside annular groove, actuator is completed at this time.The actuator being arranged in this way is more convenient, fast in assembling and disassembly process
It is prompt.
Preferably, the mounting groove is used for and driving oil far from baffle, the baffle has been bolted at the notch of dynamic model
Cylinder piston rod side wall offsets.
Through the above technical solutions, baffle can be with drive during carrying out mobile using actuator driving slag trap
The side wall of dynamic cylinder piston rod abuts against, to guarantee that drive cylinder output shaft will not be separated with attachment base, so that the extrusion casint
The use process of mold becomes more smooth, conveniently.
In conclusion the present invention having the beneficial effect that in contrast to the prior art
1, during carrying out extrusion casint, condensate layer is not easily accessible mould inside under the action of slag trap, to a certain degree
On improve the yields of the squeeze casting mould；
2, during slag trap carries out mobile, guide sleeve plays guiding role to the movement of slag trap, so that slag trap is not
It easily shifts in moving process, and slag trap can play preferable barrier effect to the condensate layer formed at sprue bush.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment, is mainly used for showing the contour structures of embodiment；
Fig. 2 is the partial sectional view of embodiment, is mainly used for showing the composition situation of each section in embodiment；
Fig. 3 is the portion the A enlarged drawing of Fig. 2；
Fig. 4 is the structural schematic diagram of pushing off the slag part, is mainly used for showing the composition situation of pushing off the slag part.
Appended drawing reference: 1, dynamic model；2, cover half；3, die cavity；31, type core；32, type chamber；4, through-hole；5, sprue bush；6, pushing off the slag
Part；61, slag trap；62, actuator；621, attachment base；622, drive cylinder；7, arc groove；8, guide sleeve；9, limiting slot；
10, limited block；11, mounting groove；12, block；13, annular groove；14, baffle.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of squeeze casting mould that yields is high, as shown in Figure 1, Figure 2, Figure 3 shows, including dynamic model 1 and with dynamic model 1 fasten
Cover half 2.Dynamic model 1 is convexly equipped with type core 31 on the end face of cover half 2, and type core 31 extends towards 2 side of cover half.Cover half 2 with
Type chamber 32 is provided on the opposite end face of type core 31, and type chamber 32 extends away from 1 side of dynamic model.When dynamic model 1 and cover half 2
When being interlocked, type core 31 extend into 32 inside of type chamber and forms die cavity 3.Through-hole 4 is provided on cover half 2, and 4 one end of through-hole is run through
In end face of the cover half 2 far from dynamic model 1, the other end extends towards 1 side of dynamic model and is connected with die cavity 3.Through-hole 4 is internally provided with
Sprue bush 5, and the lateral wall of sprue bush 5 and the inner hole wall of through-hole 4 abut against.
When being extended using the squeeze casting mould to product, control dynamic model 1 first is interlocked with cover half 2, later
The mold is placed on die casting machine, so that end face of the cover half 2 far from dynamic model 1 is abutted against with die casting machine, and the pressure on die casting machine
It penetrates cylinder to extend into inside sprue bush 5, molten metal liquid is injected into inside sprue bush 5 by die casting machine later, later metal
Liquid stream via through holes 4 simultaneously enter inside die cavity 3.When being full of molten metal inside die cavity 3, die casting machine is closed, so that molten metal
In 3 inside cooled and solidified of die cavity and form product.
As shown in Figure 3, Figure 4, cover half 2 is internally provided with two guide sleeves 8, and two guide sleeves 8 are in pair centered on through-hole 4
Claim distribution, and guide sleeve 8 radially extends along through-hole 4 and is connected with through-hole 4.Limiting slot 9 is provided on 8 inner wall of guide sleeve, and
Limiting slot 9 is axially extending along through-hole 4.Cover half 2 is internally provided with two pushing off the slag parts 6, and two pushing off the slag parts 6 and two guide sleeves 8
It corresponds.The slag trap 61 and actuator 62 that pushing off the slag part 6 includes.
8 inside of guide sleeve is arranged in slag trap 61 and slag trap 61 can be slid along the radial direction of through-hole 4.Slag trap 61
It is provided with arc groove 7 on towards the end of 4 axial line side of through-hole, and arc groove 7 is towards the notch shape of 1 side of dynamic model
For semicircle.Arc groove when two slag traps 61 extend into 4 inside of through-hole and mutually push against, on two slag traps 61
7 are connected and form orifice shapes as circular circular hole, and the aperture of circular hole is less than the inner ring diameter of sprue bush 5.Arc groove 7
Through round corner treatment at towards the notch of 1 side of dynamic model, and the groove width of arc groove 7 is gradually increased towards 1 side of dynamic model.Pushing off the slag
61 two sides of plate are fixedly connected with limited block 10, and the line between two limited blocks 10 is parallel with through-hole 4, and limited block 10 is used for
It offsets with 9 internal groove side wall of limiting slot and then the limit slip locations of slag trap 61 is defined.
Actuator 62 includes drive cylinder 622 and attachment base 621.Drive cylinder 622 is bolted in cover half 2
On side wall, the length direction and through-hole 4 of 622 piston rod of drive cylinder are axial perpendicular, and 622 piston rod of drive cylinder is to protrude into
To inside cover half 2.622 piston rod of drive cylinder is provided with annular groove 13, and annular groove 13 and driving on the side wall of 4 side of through-hole
622 piston rod of oil cylinder is arranged coaxially.621 one end of attachment base is connected with slag trap 61 by bolt, and peace is provided on the other end
Tankage 11, and end face of the mounting groove 11 through attachment base 621 far from dynamic model 1.Inside groove of the mounting groove 11 close to drive cylinder 622
Block 12 is convexly equipped on wall, the number of block 12 is two and is symmetric.When using the actuator 62, drive cylinder
The end of 622 output shafts is extend into inside mounting groove 11, and block 12 is extend into inside annular groove 13.Mounting groove 11 is far from dynamic model 1
Baffle 14 is provided at the notch of side, and baffle 14 and the lateral wall of 622 piston rod of drive cylinder abut against, baffle 14 passes through
Bolt is connected with attachment base 621.
Specific use process is as follows for the high squeeze casting mould of yields: control 622 output shaft of drive cylinder first is stretched
It is long, so that attachment base 621 and slag trap 61 extend towards 4 side of through-hole.When slag trap 61 extend into 4 inside of through-hole and pushing off the slag
When mutually pushing against between plate 61, the arc groove 7 on two pieces of slag traps 61 is connected and forms circular hole, and the axial line of circular hole with
The axial line of through-hole 4 coincides.Driving cylinder can be closed at this time.Later by the shot sleeve on die casting machine to sprue bush 5 one
Molten metal liquid is injected in side.When molten metal and 5 side wall of sprue bush contact, part metals liquid cooling is but frozen into condensate layer.?
During condensate layer is moved with molten metal towards 3 side of die cavity, slag trap 61 can be with condensate layer close to 3 side of die cavity
End offsets, so that condensate layer is not easily accessible inside die cavity 3.Full of molten metal and molten metal cooling and shaping inside die cavity 3
When for product, control 622 output shaft of drive cylinder is shunk, so that attachment base 621 and slag trap 61 are whole away from through-hole 4
Side is mobile.When the storage of slag trap 61 is to 8 inside of guide sleeve, it can control dynamic model 1 and separated with 2 phase of cover half and by molding production
Product take out.
The above is only exemplary embodiment of the invention, protection scope and is not intended to limit the present invention, this hair
Bright protection scope is determined by the attached claims.
Claims (8)
1. a kind of squeeze casting mould that yields is high, including dynamic model (1) and cover half (2), type is convexly equipped on the dynamic model (1)
Core (31) is provided with type chamber (32) on the cover half (2), and when dynamic model (1) and cover half (2) is interlocked, type core (31) is extend into
Type chamber (32) is internal and forms the die cavity (3) for being used for shaped article, and the cover half (2) is equipped on the end face of dynamic model (1)
Through-hole (4), and through-hole (4) is connected with die cavity (3), the through-hole (4) is provided with cast gate at the aperture of dynamic model (1) side
It covers (5), and sprue bush (5) extends towards die cavity (3) side, it is characterized in that: further include pushing off the slag part (6), pushing off the slag part (6) packet
Slag trap (61) and actuator (62) are included, slag trap (61) sliding is connected to cover half (2) inside, the slag trap (61)
For stretching to through-hole (4) inside and offseting with the end of sprue bush (5), and when slag trap (61) stretch to through-hole (4) inside
When, the length that slag trap (61) is exposed to through-hole (4) inner hole wall is greater than the width of sprue bush (5)；Actuator (62) setting
In cover half (2) side-walls, and the actuator (62) output end extend into cover half (2) inside and is connected with slag trap (61).
2. the high squeeze casting mould of yields according to claim 1, it is characterized in that: the number of the pushing off the slag part (6)
It at least two and is uniformly distributed centered on through-hole (4) in circumferential.
3. the high squeeze casting mould of yields according to claim 2, it is characterized in that: the slag trap (61) is close to logical
Arc groove (7) are provided on the end in hole (4), the arc groove when slag trap (61) mutually pushes against, on slag trap (61)
(7) it is connected and forms circular hole, and Circularhole diameter is less than the inner ring diameter of sprue bush (5).
4. the high squeeze casting mould of yields according to claim 3, it is characterized in that: the arc groove (7) is close
The notch of die cavity (3) side is through round corner treatment.
5. the high squeeze casting mould of yields according to claim 1, it is characterized in that: setting inside the cover half (2)
Have guide sleeve (8), slag trap (61) sliding is connected to guide sleeve (8) inside, and setting is limited at guide sleeve (8) inner wall
Position slot (9) is convexly equipped with limited block (10) on slag trap (61) side wall, the limited block (10) be used for in limiting slot (9)
Cell wall offsets and then is defined to the limit slip locations of slag trap (61).
6. the high squeeze casting mould of yields according to claim 5, it is characterized in that: the actuator (62) includes connecting
Joint chair (621) and drive cylinder (622), the attachment base (621) are connected by bolt with limited block (10), the driving oil
Cylinder (622) is bolted on the side wall of cover half (2), and it is internal that drive cylinder (622) piston rod extend into cover half (2)
And it is connected with attachment base (621).
7. the high squeeze casting mould of yields according to claim 6, it is characterized in that: the attachment base (621) direction
The mounting groove (11) protruded into for drive cylinder (622) piston rod, and mounting groove (11) are provided on the end face of drive cylinder (622)
Deviate from the end face of dynamic model (1), notch of the mounting groove (11) towards drive cylinder (622) side through attachment base (621)
Place is convexly equipped with block (12), is provided with the annular groove (13) protruded into for block (12) on drive cylinder (622) the piston rod side wall.
8. the high squeeze casting mould of yields according to claim 7, it is characterized in that: the mounting groove (11) is far from dynamic
It has been bolted at the notch of mould (1) baffle (14), the baffle (14) is used for and drive cylinder (622) piston rod side wall phase
It supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810012734.XA CN110014132A (en) | 2018-01-06 | 2018-01-06 | The high squeeze casting mould of yields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810012734.XA CN110014132A (en) | 2018-01-06 | 2018-01-06 | The high squeeze casting mould of yields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110014132A true CN110014132A (en) | 2019-07-16 |
Family
ID=67187291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810012734.XA Pending CN110014132A (en) | 2018-01-06 | 2018-01-06 | The high squeeze casting mould of yields |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110014132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042897A (en) * | 2021-11-22 | 2022-02-15 | 广州金邦液态模锻技术有限公司 | Cold material blocking device and liquid forging machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3481614B1 (en) * | 2002-12-27 | 2003-12-22 | 宇部興産機械株式会社 | Mold for molding semi-solid metal |
| KR20110110949A (en) * | 2010-04-02 | 2011-10-10 | 홍기원 | Diecasting molding |
| JP2012121041A (en) * | 2010-12-07 | 2012-06-28 | Honda Motor Co Ltd | Casting die for semisolid metal |
| CN207709838U (en) * | 2018-01-06 | 2018-08-10 | 小出（台州）模具有限公司 | The high squeeze casting mould of yields |
-
2018
- 2018-01-06 CN CN201810012734.XA patent/CN110014132A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3481614B1 (en) * | 2002-12-27 | 2003-12-22 | 宇部興産機械株式会社 | Mold for molding semi-solid metal |
| KR20110110949A (en) * | 2010-04-02 | 2011-10-10 | 홍기원 | Diecasting molding |
| JP2012121041A (en) * | 2010-12-07 | 2012-06-28 | Honda Motor Co Ltd | Casting die for semisolid metal |
| CN207709838U (en) * | 2018-01-06 | 2018-08-10 | 小出（台州）模具有限公司 | The high squeeze casting mould of yields |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042897A (en) * | 2021-11-22 | 2022-02-15 | 广州金邦液态模锻技术有限公司 | Cold material blocking device and liquid forging machine |
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