CN109746392A - The method of die assembly and manufacture metal casting - Google Patents
The method of die assembly and manufacture metal casting Download PDFInfo
- Publication number
- CN109746392A CN109746392A CN201811246319.7A CN201811246319A CN109746392A CN 109746392 A CN109746392 A CN 109746392A CN 201811246319 A CN201811246319 A CN 201811246319A CN 109746392 A CN109746392 A CN 109746392A
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- die
- core
- cavity
- die assembly
- metal alloy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/101—Permanent cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Die assembly for manufacturing metal alloy castings includes upper die and lower die, multiple sand cores and pressure core.Upper mold includes the top of die cavity.Lower die includes the top of running gate system, the lower part of die cavity and multiple riser cavities.Running gate system is connected to riser cavity, and the liquid metal alloy through being overpressurized is provided to riser cavity.Pressure core has multiple protrusions, and the multiple protrusion is arranged in each of top of multiple riser cavities.
Description
Technical field
This disclosure relates to metal casting technique, and more particularly, to aluminum alloy casting technique.
Background technique
Statement in this section only provides background information relevant to the disclosure, and may be constructed or do not constitute existing skill
Art.
High-performance aluminium alloy cylinder cover can be produced there are many different casting techniques.Gravity and low-pressure permanent and semipermanent
Die casting process is used for inner passage and feature using sand core.However, often to produce mechanical performance lower for these techniques
Casting, and for the alloy, higher mechanical performance should be able to achieve.Although being inclined using tilting or rotary mold
The casting of the reduction metal turbulence for the manufacture of falling mechanism has improved mechanical performance, but since circulation time is long and work
The complexity of skill and equipment, these techniques often have high relevant cost.
Therefore, some aluminum alloy casting technique productions at present have the relatively inexpensive casting of low mechanical performance.Other techniques
Produce the casting with high-mechanical property.However, as a result all causing cost for most of (if not all) these improvement
Increase.Therefore, this field needs a kind of improved casting method, with lower, more competitive cost production high quality,
High performance aluminium casting.
Summary of the invention
The present invention provides a kind of for manufacturing the die assembly of the method for metal alloy castings.Die assembly include upper mold,
Lower die and multiple sand cores and pressure core.Upper mold includes the top of die cavity.The lower part and at least the first standpipe that lower die includes die cavity
The top of chamber.The top of lower die is arranged in upper mold, with the upper and lower part of built up cavity.Multiple sand cores are arranged in upper die and lower die
Die cavity inside.Pressure core has at least the first protrusion, and wherein the first protrusion is arranged and wraps adjacent to the first riser cavity
Include the top surface to form the bottom of the first riser cavity.
In one embodiment of the invention, pressure core is arranged at one in first position and the second position.Work as pressure
When core is in first position, the first riser cavity has the first volume.When pressure core is in the second position, the first riser cavity has
Second volume.Second volume is less than the first volume.
In another embodiment of the present invention, die assembly further includes running gate system and piston core.Running gate system has
The runner being connected to the first riser cavity, and piston core is positioned close at one in the first position and the second position of runner.
In yet another embodiment of the present invention, the first position of piston core to be formed between the first riser cavity and runner
Connection, and the second position of piston core inhibits the connection between the first riser cavity and runner.
In yet another embodiment of the present invention, pressure core is metal core.
In yet another embodiment of the present invention, lower die further includes running gate system, and the running gate system is by liquid metal alloy
Riser cavity is transmitted to from the liquid metal alloy source through being overpressurized.
In yet another embodiment of the present invention, the liquid metal alloy source through being overpressurized includes in electromagnetic pump and mechanical pump
One kind.
In yet another embodiment of the present invention, the liquid metal alloy source through being overpressurized includes pouring basin and cast gate.
In yet another embodiment of the present invention, upper die and lower die are Permanent metallic moulds.
In yet another embodiment of the present invention, pressure core is the moveable part of lower die.
The present invention also provides a kind of for manufacturing the die assembly of the method for metal alloy castings.Die assembly includes sand
Core assembly, upper die and lower die.Sand core component includes at least standpipe core and piston core.Standpipe core includes running gate system and at least first
Riser cavity.Piston core is arranged near the first riser cavity.Upper mold includes the top of die cavity.Lower die includes lower part and the piston of die cavity
Core actuator.The lower part of die cavity is arranged in sand core component, and upper mold is arranged in lower die, and piston core actuator is fixed into and piston
Core associated movement.Piston core is arranged at one in first position and the second position.When piston core is in first position, first
Riser cavity has the first volume.When piston core is in the second position, the first riser cavity has the second volume.First riser cavity
First volume of second volume less than the first riser cavity.
In one embodiment of the invention, piston core has top surface, which forms one of the first riser cavity
Point.
In another embodiment of the present invention, piston core includes cross section, and the width of the cross section is less than the first standpipe
The cross section of chamber.
In yet another embodiment of the present invention, the liquid metal alloy source through being overpressurized includes in electromagnetic pump and mechanical pump
One kind.
In yet another embodiment of the present invention, the liquid metal alloy source through being overpressurized includes pouring basin and cast gate.
In yet another embodiment of the present invention, die assembly further includes second piston core.Running gate system has and first
The runner of riser cavity connection.Second piston core is positioned close at one in the first position and the second position of runner.Second is living
The first position of plug core to form connection between the first riser cavity and runner.The second position of second piston core inhibits first to stand
Connection between lumen and runner.
The present invention also provides a kind of methods for manufacturing light metal alloys casting.This method includes step 1: providing mold
Component, which includes upper die and lower die and the core assembly for forming die cavity, and wherein lower die includes at least the first riser cavity
And running gate system, and wherein the first riser cavity is at least partly formed by moveable first piston actuator, and runner is at least
Partly formed by moveable second piston actuator.It is filled out step 2: starting to execute with the liquid metal alloy through being overpressurized
Fill running gate system.Step 3: completing to execute with liquid metal alloy filling running gate system, the first riser cavity and mould through being overpressurized
Chamber.Step 4: stopping with the liquid metal alloy filling die assembly through being overpressurized and starting second piston actuator to close
Runner.5th step exerts a force to the bottom surface of moveable piston actuater mold on the direction of lower die, to increase by
Liquid metal alloy is hydraulic in one riser cavity.
In one embodiment of the invention, this method further includes taking out the casting of solidification from die cavity and being put into casting
It is heat-treated in baking oven.
In another embodiment of the present invention, this method further includes that the casting of solidification is sprayed from casting cavity.
In yet another embodiment of the present invention, this method further includes that casting is put into baking oven to be heat-treated.
In yet another embodiment of the present invention, moveable piston actuater mould is exerted a force on the direction of lower die
The bottom surface of tool further comprises with the hydraulic step for increasing the liquid metal alloy in the first riser cavity: in the direction of lower die
On to moveable piston actuator mold bottom surface applied force, reduce the first riser cavity volume simultaneously increase the first riser cavity in
Liquid metal alloy it is hydraulic.
In conjunction with attached drawing, from hereafter in the detailed description for executing best mode of the invention, features described above of the invention and
Advantage and other feature and advantage will become obvious.
Detailed description of the invention
Attached drawing described herein is for illustration purposes only, it is no intended to be limited the scope of the present disclosure in any way.
Fig. 1 is the top plate of cylinder head casting in accordance with the principles of the present invention and the view of combustion chamber；
Fig. 2 is the perspective view of cylinder head casting in accordance with the principles of the present invention；
Fig. 3 is the part assembling figure of die assembly in accordance with the principles of the present invention；
Fig. 4 A is the end-view of die assembly in accordance with the principles of the present invention；
Fig. 4 B is the side view of die assembly in accordance with the principles of the present invention；
Fig. 5 is the perspective sectional view of a part of die assembly in accordance with the principles of the present invention；
Fig. 6 is the cross-sectional view of a part of die assembly in accordance with the principles of the present invention；
Fig. 7 A-7C is the cross-sectional view inside the die assembly in each stage of casting method in accordance with the principles of the present invention；
Fig. 8 is the cross-sectional view of a part of die assembly in accordance with the principles of the present invention；
Fig. 9 is the cross-sectional view of a part of die assembly in accordance with the principles of the present invention, and
Figure 10 is the flow chart for describing the method for casting metal alloy in accordance with the principles of the present invention.
Specific embodiment
With reference to attached drawing, wherein identical appended drawing reference indicates identical component, in fig 1 and 2, one according to the present invention
Example illustrates the aluminum alloy cylinder lid 10 produced using metal alloy casting method 100, will be described now.It is overall
On, cylinder cover 10 includes such as top plate 12, combustion chamber 14, air inlet and exhaust outlet 16, camshaft bearing 18, spark-plug hole 20, water
The features such as set opening 22 and oil duct 24.More specifically, the cylinder cover 10 being at least partially formed in casting process is important
Feature includes top plate 12 and combustion chamber 14.The product specification of top plate 12 and combustion chamber 14 is usually than other regions of cylinder cover 10
Need higher bending strength and tensile strength.In addition, locally improving cold compared with improving the cooling rate in entire casting
But it is lower to implement then difficulty for rate.For example, the very fast cooling rate of top plate and combustion chamber generates finer microstructure；
About 20 μm of dendritic arm spacing (DAS) and higher intensity.Other regions cooling with slow rate of cylinder cover 10 can shape
At about 60 μm of DAS.In addition, mechanical performance can improve by other means, such as the liquid metal through being overpressurized is mentioned
It is supplied to final solidified casting region.This mode forms improved microstructure by reducing porosity and shrink defects.
Turning now to Fig. 3, the die assembly 30 that cylinder cover 10 according to the present invention is produced for casting method is shown,
It will be described now.The specific mold components 30 of Fig. 3 manufacture in the die cavity 8 formed by multiple sand cores 32 and sand mo(u)ld 34
Two 10 casting of cylinder cover.However, sand mo(u)ld or the formation of metal die 34 can be used in certain surfaces of 10 casting of cylinder cover.
For example, mold 34, which can be made of tool steel and provide equipped with hydraulic actuator improved mechanical performance and repeat, to be made
Or permanent mold 34.
Sand core 32 forms all internal feature parts of 10 casting of a part and cylinder cover of surface part, and includes: example
Such as two 36, two, end core, 38, two, side core, 42, two, top cover core, 44, two air inlets of exhaust outlet core of central core 40, two
Mouth 46, two jacket cores 48 of core and two oil extraction cores 50.Mold 34 includes lower mould or lower die 62, upper die or upper mold
64 and pressure core or mold 76.During assembly mold component 30, sand core 32 be inserted into a particular order lower die 62 or on
In mould 64.In the example shown in Fig. 3, Fig. 4 A and Fig. 4 B, sand core 32 is placed in lower die 62, and upper mold 64 is placed on the sand of assembling
On the top of core 32, so that sand core 32 to be fixed on to appropriate position.In some embodiments, sand core 32 is assembled into core packet,
The core packet is put into lower die 62 again later.However, this way belongs to the scope of the present invention.About pressure core or mold 76
Details will be explained in more detail below.
In the present invention, feature included by lower die 62 needs especially to pay close attention to.Lower die 62 includes running gate system 66, casting
System 66 is formed as receiving liquid metal from the liquid metal alloy source through being overpressurized, and liquid metal alloy is directed to
In the cavity formed in running gate system, which is formed by the sand core 32 and sand mo(u)ld 34 of die assembly 30.Although can in Fig. 3
To see a part of running gate system 66, but running gate system 66 is illustrated in greater detail in Fig. 4 A, 4B, 5 and 6.Lower die 62
Running gate system 66 include entrance 68, multiple runners or runner 70 and multiple riser cavities 72.More specifically, entrance 68 receives
The liquid metal alloy in the liquid metal alloy source from electromagnetic pump or mechanical pump etc. through being overpressurized.As shown in Figure 4 B, may be used
Another mechanism for providing from the liquid metal alloy through being overpressurized to entrance 68 includes the feature formed in die assembly 30
Part, this feature part have pouring basin 86 and cast gate 88.Entrance 68 is provided independently of by the liquid metal alloy through being overpressurized
Liquid metal is transmitted to runner 70 by device, entrance 68.Runner 70 is connected to multiple riser cavities 72 and is supplied to liquid metal
Multiple riser cavities 72.Runner 70 controls the flow velocity and mixed flow of liquid metal by controlling diameter and the shape of runner 70.Standpipe
Chamber 72 is filled with liquid metal, which fills since the bottom of riser cavity 72, when liquid metal rises to casting cavity
When middle, riser cavity 72 and then the die cavity 8 for filling die assembly 30, the casting cavity is by the space shape between sand core 32 and mold 34
At.
Referring now to Figure 6, showing the cored structure for being used to form riser cavity 72, will be described now.Riser cavity
Including top 82 and lower part 83.The top 82 of riser cavity 72 is formed in lower die 32, and the lower part 83 of riser cavity is by pressure core 76
It is formed.Chamber, when liquid metal alloy is introduced into die assembly 10, the chamber of formation are formed at the top 82 of riser cavity 72 and lower part 83
Manufacture standpipe 72.Pressure core 76 includes multiple protrusions 78, and each protrusion 78 extends in the chamber 82 of lower die 62.In other embodiments
In, multiple pressure cores with single protrusion can be incorporated into die assembly 10.Construction regardless of pressure core 76, protrusion
78 all must be mobile relative to lower die 62.As shown in fig. 6, the shape on the top 82 of riser cavity 72 is similar to bullet, however, not
In the case where departing from the scope of the present invention, it can be envisaged that the other shapes or construction of riser cavity.For example, riser cavity 72 can be from
The contiguous chamber shape that the lid rail of cylinder cover extends.In the present embodiment, the protrusion 78 of pressure core 76 has cylindrical shape, diameter
D is less than the diameter on the top 82 of riser cavity 76.In other embodiments, multiple pressure cores with single protrusion can be incorporated into
In die assembly 10.Construction regardless of pressure core 76, all invariably protrusion 78 can be relative under in all embodiments
Mould 62 is mobile.
Each of multiple protrusions 78 include top surface 84, and top surface 84 forms the bottom 83 of riser cavity 72.Protrusion 78
It is cooperated in the top 82 of riser cavity 72, and being capable of the Y movement in upward direction in chamber 82.More specifically, 76 energy of pressure core
It is enough to be maneuvered at least two positions.The first position being described in detail in Fig. 7 A and 7B, pressure core 76 are arranged so that riser cavity
72 have the first volume.Power Y is applied to pressure core 76 by the second position being described in detail in fig. 7 c, so that pressure core 76 is arranged to
So that riser cavity 72 has the second volume, the second volume is less than the first volume.Volume between first and second positions, which reduces, to be turned
The pressure increase for turning to liquid metal alloy in casting cavity, is described in more detail below.Moreover it is preferred that protrusion 78 by
Be forced into still largely is in the volume of riser cavity 72 of liquid, to increase the fluid pressure in riser cavity 72, and then
Increase the pressure in die cavity 8
With continued reference to Fig. 7 A, 7B and 7C, a series of gradually stage of manufactures for describing casting alloy cylinder cover 10 is shown
Attached drawing, will be described now.It is checking with after assembly mold component 30, die assembly 30 is being inserted into machine simultaneously
It is fixed by Hydraulic Clamping Mechanism, so that thus the lower die 62 and running gate system 66 of die assembly 30 are used as die assembly
30 lower part.Liquid metal alloy source (not shown) through being overpressurized is arranged to the entrance 68 of running gate system 66.Such as Fig. 7 A institute
Show, when liquid metal alloy is introduced into running gate system 66, liquid metal alloy is first filled with runner 70 before reaching die cavity 8
With standpipe 72.As shown in Figure 7 B, as liquid metal alloy goes successively to running gate system 66, the liquid level of liquid metal alloy passes through
Riser 72 rises and starts to fill die cavity 8.In fig. 7 c, liquid metal alloy is filled up completely die cavity 8, and machine is upward
To 76 applied force of pressure core on the Y of direction, while die assembly 30 is generally held in same position.In the process, die cavity 8 pushes up
The metal alloy in portion starts to solidify, and the last a kind of liquid metal alloy for entering die assembly 30 is most warm and keeps liquid.With
The metal freezing in die cavity 8, need additional liquid metal to inhibit porosity or shrink defects.Therefore, when in die cavity 8
When the first metal freezing, pressure core 76 applies pressure in standpipe 72, promotes confession of the additional liquid metal alloy to die cavity 8
It gives.Additional liquid metal solidifies the gap to be formed to the first metal contracts in die cavity 8 and is fed.
With reference to Fig. 8, another embodiment of the invention of core and die assembly 100 including substitution is shown, now will
It is described.In the particular instance, if riser cavity 102 is formed by metal die 104 and dry sand core, including standpipe core
106, base portion core 108 and piston core 110.More specifically, standpipe core 106, base portion core 108 and piston core 110 by assembling to
It forms riser cavity 112 and is placed in metal die 104.In one embodiment, base portion core can be made in piston core 110
108 separate section.In addition, metal die 104 can be the mold for semipermanent mold machine, or this is not being departed from
Any one of several die machines of metal die 104 or technique are used in the case where invention scope.
Riser cavity 112 includes top 114 and lower part 116.The top 114 of riser cavity 112 is formed in standpipe core 106, and
The lower part 116 of riser cavity is partly formed by base portion core 108 and piston core 110.Standpipe core 106 further includes running gate system 118
A part is provided for liquid metal alloy and to be connected between the liquid metal alloy source through being overpressurized and riser cavity 112
Path.When the liquid metal alloy through being overpressurized is introduced into core and die assembly 100, the top 114 of riser cavity 112 is under
Portion 116 is formed to cast standpipe 72.
Metal die 104 includes piston core actuator 120, and piston core actuator 120 has top surface 122, piston core 110
It is arranged on top surface 122.Piston core actuator 120 and piston core 110 can be relative to metal dies 104 and base portion core 108
It is mobile.In one embodiment, the single of connection can be made in piston core 110 and basic core 108, and piston core 110 is designed as base
The separate section of plinth core 108.Piston core actuator 120 is further secured to hydraulic slide (not shown) or is fixed to other for power
P is applied to the power guiding mechanism of piston core actuator 120.
In an example of the present invention, multiple piston cores 110 and riser cavity 112 include as required such as casting design
In core and die assembly 100.Construction and quantity regardless of piston core 110 and riser cavity 112, piston core 110 must be opposite
It is mobile in riser cavity 112.As shown in figure 8, the cross section X of piston core 110 is significantly less than the cross section Y of riser cavity 112.This allows
Piston core 112 is moved to the metal alloy in riser cavity 112 without contacting the wicking surface for being closer to have solidified.
Turning now to Fig. 9, another embodiment of the invention of core and die assembly 100 including substitution is shown, it is existing
It will be described.Some features of Fig. 9 leave appended drawing reference comprising the similar characteristics part from foregoing figures.?
In the example, running gate system 118 includes runner 124, and the liquid metal alloy through being overpressurized is passed through running gate system by runner 124
118 are transmitted to riser cavity 112 from entrance 68.If runner 124 is formed by metal die 104 and dry sand core, include if being somebody's turn to do dry sand core
Standpipe core or upper core 106, base portion core or mo(u)ld bottom half core 108 and piston core 110.More specifically, upper core 106,108 and of mo(u)ld bottom half core
Piston core 110 is filled with to form runner 112 and be placed in metal die 104 by group.In one embodiment, piston core 110
The separate section of mo(u)ld bottom half core 108 can be made.In addition, metal die 104 can be the mold for semipermanent mold machine,
Or any one in the several die machines or technique using metal die 104 without departing from the present invention
Kind.
Metal die 104 includes piston core actuator 126, and piston core actuator 126 has top surface 128, piston core 110
It is arranged on top surface 128.The embodiment may include in 118 runner of several running gate systems for running through entire die assembly 100
In 124.Piston core actuator 126 and piston core 110 can be mobile relative to metal die 104 and traction core 108.In a reality
It applies in example, the single of connection can be made in piston core 110 and base portion core 108, and piston core 110 is designed as the separation of base portion core 108
Part.Piston core actuator 120 is further secured to hydraulic slide (not shown) or power F is applied to piston core fixed to other
The power guiding mechanism of actuator 120.Piston core 110 is moved in slideway 124 when being engaged by piston core actuator 120, effectively
Ground resistance baffle road 124 simultaneously prevents any additional liquid metal alloy stream from flowing in either direction in runner 124.The embodiment
In piston core actuator 120 can independently of embodiment illustrated in fig. 8 piston core actuator 120 and operate.
Referring now to Figure 10, showing the flow chart described for manufacturing the method 200 of casting alloy cylinder cover 10, now
It will be described.Method 200 starts from the first step 202: providing die assembly 30.Die assembly 30 includes being formed with
The lower mould or lower die 62 and pressure core 76 of running gate system 66, upper die or upper mold 64 and multiple sand cores 32.Second step 204
Start with liquid metal alloy filling running gate system 66 and die cavity 8 through being overpressurized.Third step 206 completes filling die cavity 8 or portion
Divide filling die cavity 8.4th step 208 stops filling the system with the liquid metal alloy through being overpressurized, and engaging piston core causes
Dynamic device 120, effectively turns off the runner 118 for leading to riser cavity 112.Alternatively, runner 118 freeze with prevent liquid metal alloy from
Riser cavity 72 flows back.The bottom surface applied force of 5th step 210 Y-direction pressure core 76 in upward direction, to the liquid in riser cavity 72
The pressurization of state metal alloy, therefore liquid metal alloy is forced to enter any sky formed in metal alloy process of setting in die cavity 8
Gap.Die assembly 30 is put into baking oven to carry out desanding and heat treatment by the 6th step 212.Alternatively, the 7th step 214 is from die cavity 8
Fountain die removes running gate system and standpipe from casting, sand core is cleaned up from the inner passage of casting, and be heat-treated casting
Part.
Although preferred embodiment of the present invention is described in detail, it is familiar with the technology of the field that the invention relates to
Personnel will be recognized implements various supplement or replacements of the invention within the scope of the appended claims.
Claims (9)
1. a kind of for manufacturing the die assembly of metal alloy castings, the die assembly includes:
Upper mold comprising the top of die cavity；
Lower die comprising the top of the lower part of the die cavity and at least the first riser cavity, and wherein the upper mold is arranged in institute
The top of lower die is stated to combine the upper and lower part of the die cavity；
The inside of the die cavity of the upper die and lower die is arranged in multiple sand cores, and
Pressure core, have at least the first protrusion, and wherein first protrusion be arranged adjacent to first riser cavity and
Top surface including forming the bottom of first riser cavity.
2. die assembly according to claim 1, wherein the pressure core is arranged in first position and the second position
At one, and wherein first riser cavity has the first volume, Yi Jisuo when the pressure core is in the first position
Stating the first riser cavity has the second volume when the pressure core is in the second position, and second volume is less than described the
One volume.
It further include running gate system and piston core 3. die assembly according to claim 1, and the wherein running gate system
With the runner being connected to first riser cavity, and the piston core is arranged in the first position and the second position
At one.
4. die assembly according to claim 3, wherein the first position of the piston core makes described first to stand
Connection is formed between lumen and the runner, and the second position of the piston core inhibits first riser cavity and institute
State the connection between runner.
5. die assembly according to claim 1, wherein the lower die further includes running gate system, the running gate system is by liquid
State metal alloy is transmitted to the riser cavity from the liquid metal alloy source through being overpressurized.
6. die assembly according to claim 5, wherein the liquid metal alloy source by pressurization include electromagnetic pump,
One of mechanical pump and low pressure furnace.
7. die assembly according to claim 5, wherein the liquid metal alloy source by pressurization includes pouring basin
And cast gate.
8. die assembly according to claim 1, wherein the upper die and lower die are Permanent metallic molds.
9. die assembly according to claim 8, wherein the pressure core is the moveable part of the lower die.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/804,315 US20190134704A1 (en) | 2017-11-06 | 2017-11-06 | Mold assembly and method for manufacturing metal castings |
| US15/804315 | 2017-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109746392A true CN109746392A (en) | 2019-05-14 |
Family
ID=66179022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811246319.7A Pending CN109746392A (en) | 2017-11-06 | 2018-10-25 | The method of die assembly and manufacture metal casting |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20190134704A1 (en) |
| CN (1) | CN109746392A (en) |
| DE (1) | DE102018127350A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202096B (en) * | 2019-07-03 | 2024-07-23 | 成都桐林铸造实业有限公司 | Oil extraction motor shell mould |
| CN112427608A (en) * | 2020-11-30 | 2021-03-02 | 贵州航天风华精密设备有限公司 | Large magnesium alloy special-shaped structural part casting die and process |
| CN113118390B (en) * | 2021-05-25 | 2023-05-09 | 江苏力源金河铸造有限公司 | Pouring process for large hydraulic castings |
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2017
- 2017-11-06 US US15/804,315 patent/US20190134704A1/en not_active Abandoned
-
2018
- 2018-10-25 CN CN201811246319.7A patent/CN109746392A/en active Pending
- 2018-11-01 DE DE102018127350.9A patent/DE102018127350A1/en not_active Withdrawn
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Also Published As
| Publication number | Publication date |
|---|---|
| US20190134704A1 (en) | 2019-05-09 |
| DE102018127350A1 (en) | 2019-05-09 |
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Application publication date: 20190514 |