CN106424643A - Die-casting die and die-casting method - Google Patents
Die-casting die and die-casting method Download PDFInfo
- Publication number
- CN106424643A CN106424643A CN201610886723.5A CN201610886723A CN106424643A CN 106424643 A CN106424643 A CN 106424643A CN 201610886723 A CN201610886723 A CN 201610886723A CN 106424643 A CN106424643 A CN 106424643A
- Authority
- CN
- China
- Prior art keywords
- die
- running channel
- mould
- die cavity
- hole
- 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
- 238000004512 die casting Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 74
- 239000002994 raw material Substances 0.000 claims abstract description 69
- 230000008569 process Effects 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims description 88
- 230000006835 compression Effects 0.000 claims description 88
- 238000002347 injection Methods 0.000 claims description 64
- 239000007924 injection Substances 0.000 claims description 64
- 238000005266 casting Methods 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 28
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000005476 soldering Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 33
- 239000002184 metal Substances 0.000 description 33
- 238000004519 manufacturing process Methods 0.000 description 20
- 239000003921 oil Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 9
- 238000005242 forging Methods 0.000 description 6
- 230000007717 exclusion Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000005058 metal casting Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 101100532451 Rattus norvegicus Slc22a17 gene Proteins 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010120 permanent mold casting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing 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
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a die-casting die. Cavities and a pouring gate are arranged in the die-casting die; the pouring gate communicates with the cavities; point pressing holes are formed in the die-casting die and communicate with the cavities or the pouring gate; and the die-casting die further comprises supercharged rods matched with the point pressing holes. The invention further provides a die-casting method, which utilizes the die-casting die for die-casting, and concretely comprises the following steps of (1) press-injecting a melted raw material liquid into the pouring gate, the cavities and the point pressing holes arranged on the die-casting die, so that the pouring gate, the cavities and the point pressing holes are full of the melted raw material liquid; (2) driving the supercharged rods to extrude raw materials prestored in the point pressing holes into the pouring gate and the cavities; and (3) after the raw materials are molded, taking die-casting pieces from the die-casting die. By adopting the technical scheme, the die-casting pieces with high density, no bubbles, small stress, good flexibility, good mechanical property, and capability of being subjected to heat treatment, soldering, machining and other processes can be obtained.
Description
Technical field
The invention belongs to product manufacturing field, it is related to a kind of compression mod and pressure casting method.
Background technology
With social progress, all trades and professions are to metallic article（Alloy）Demand increasing, to its quality requirement
Also more and more higher, particularly automobile, bicycle, electric motor car, the even industry such as mobile phone.Casting is a kind of common production metal system
The manufacture method of product, casting mainly has sand casting and Special Processes of Metal Castings 2 big class.Ordinary sand casting, by the use of sand as mold material
Material, also known as sand casting, founding, including greensand mold, dry sand mold and chemicosolidifying sand mold 3 class, but and not all sand all may be used to casting.
Benefit is that cost is relatively low, because the sand that mold is used is reusable；It is time-consuming that shortcoming is that mold makes, and mold itself can not be by
Reuse, must could obtain finished product after destroying, so that the manufacture efficiency of part is low, have a strong impact on the production speed of product
Rate, is not suitable for the metallic article mass producing.Special Processes of Metal Castings, it is main for being divided into by Modeling Material with natural mineral products sandstone again
The Special Processes of Metal Castings of Modeling Material（As model casting, loam moulding, shell moulded casting, negative pressure casting, cavityless casting, ceramic mold casting
Deng）With the Special Processes of Metal Castings being main mold material with metal（As permanent mold casting, compression casting, continuously casting, low pressure casting,
Centrifugal casting etc.）Two classes.Compression casting is a kind of gradually rising and more and more important casting method.
Die casting, i.e. compression casting, is to make motlten metal fill at a high speed type the casting side solidifying under stress under high pressure
Method.Extrusion process is exactly using three big key elements such as machine, compression mod and alloys, by the process of pressure, speed and time unification.But
In prior art, die casting have the characteristics that filling velocity fast it is adaptable to the production of thin-wall complicated part, but often go out in injection process
Now it is vented bad, together compression mod is entered in die casting to the easy volume gas of aluminium alloy, makes cast structure gassiness, also with cold shut, owe the defects such as casting,
The mechanical performance leading to product reduces, and can not be heat-treated and weld.
Content of the invention
In view of this, the present invention is provided a kind of a kind of compression mod that can solve the above problems and is carried out using this compression mod
The pressure casting method of die casting.
A kind of compression mod, is provided with die cavity and running channel in compression mod, described running channel connect with die cavity it is characterised in that：Described
Compression mod is provided with and presses hole, and the described hole that presses is connected with die cavity or running channel, and described compression mod also includes and presses hole phase
The booster rod of adaptation.
Wherein, described compression mod includes two or more point of mould, and described point of mould is connected, described die cavity and running channel
It is opened on point mould.
Wherein, the described hole that presses is connected with running channel.
Wherein, the quantity of described point of mould is two, the respectively first mould and the second mould, and the first mould is quiet mould, described second
Mould is dynamic model, and on dynamic model, the described hole that presses is circular hole in the described hole that presses.
Wherein, described running channel is divided into main running channel, point running channel and outer running channel, and described main running channel is connected with a point dealings, described
Running channel is divided to connect with die cavity, described outer running channel is also connected with die cavity.
Wherein, described point of mould include point mould framed and be detachably arranged in this point of mould framed on point mould core rod, institute
State die cavity on point mould core rod.
A kind of pressure casting method, the method carries out die casting using the compression mod as described in claim 1-6 it is characterised in that wrapping
Include following steps：
（1）Running channel that fused raw material liquid injection is provided with to compression mod, die cavity and press in hole, make fused raw material liquid
Full of running channel, die cavity and press hole；
（2）Promote booster rod, booster rod by press the material extruding that in the hole prestores be back to running channel, in die cavity；
（3）After the raw material cooling shaping in die cavity and running channel, take out die casting from compression mod.
Wherein, step（1）In, described compression mod is made up of two or more point of mould, in step（1）Before, will
Divide mould matched moulds, in the compression mod after matched moulds, be formed with die cavity and running channel；Before matched moulds, it is separately mounted to press by framed for each point of mould
On casting machine, by each point of mould core rod be installed to each self-corresponding point of mould framed on.
Wherein, in step（1）In, compression mod is preheated, compression mod is preheating to 220 DEG C -250 DEG C.
Wherein, in step（1）In, by the process to running channel and die cavity for the fused raw material liquid injection be divided into the first stage and
Second stage, the injection pressure of second stage is more than the injection pressure of first stage.
Wherein, in step（1）In, the described first stage is from the process starting injection to arrival injection summit, second-order
Duan Weicong reaches and increases injection pressure during injection summit and maintain the constant process of pressure, and described injection summit is that raw material liq is firm
Full of running channel, die cavity and when pressing hole, the injection speed of described first stage is 0.005-1m/s, the injection pressure of second stage
Power size is 0-300T, and shot time is 1-15s.
Wherein, in step（2）In, after injection process enters second stage 0-10s, begin through booster rod extruding and press
The raw material that prestores in hole, to press the raw material that prestores in hole point pressure pressure be 0-300T, press the time be 1-15s.
Wherein, in step（1）In, by predetermined amount fused raw material liquid injection to running channel and die cavity, make molten raw material liquid
Body is full of running channel, die cavity and presses hole.
After technique scheme, during die casting, first the raw material liq injection of melting to running channel, die cavity and is pressed
Kong Zhong, after raw material liq is full of running channel, die cavity and presses hole, then will press the raw material back pressure prestoring in hole to running channel and type
In chamber, thus partial compaction sparse in die cavity, bubble are discharged, play forging and stamping effect；And keep high pressure, make the raw material in die cavity
Cooling shaping under high pressure.High density, bubble-free, stress is little, pliability is good, mechanical property is good die casting so can be obtained
Part, and this die casting can carry out being heat-treated, the subsequent technique such as freeze, machine.
Brief description
A kind of schematic diagram of the dynamic model of compression mod that Fig. 1 is provided by present pre-ferred embodiments.
A kind of compression mod sectional view that Fig. 2 is provided by present pre-ferred embodiments.
A kind of flow chart of pressure casting method that Fig. 3 is provided by present pre-ferred embodiments.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
One of embodiment provided by the present invention pressure casting method, for producing the die casting of metal or alloy, that is, exists
In the present embodiment, the raw material liq of melting is the metal of melting（Alloy）Liquid.But it is worth special instruction, the present invention also may be used
For producing the die-cast product of various nonmetallic materials such as plastics, plastic cement.
One of embodiment provided by the present invention pressure casting method, using die cylinder, injection oil in press casting procedure
Cylinder, point compressing cylinder provide power for it, and specifically, described die cylinder is matched moulds and die sinking provides power, described injection oil cylinder
There is provided power for injection fused raw material liquid, described compressing cylinder is booster rod to be poured pressing the material extruding that in the hole prestores and be back to
Power is provided in road, die cavity.Although it should be noted that for pressure casting method provide power be not limited to oil cylinder, can also be motor
Deng conventional power-equipment.
Refer to Fig. 1-2, a kind of compression mod 100 provided by the present invention, described compression mod can be integrated mechanism it is also possible to
It is connected for two or more point of mould and forms, in this compression mod 100, be provided with die cavity 40 and running channel 30, described running channel 30 He
Die cavity 40 connects, and described compression mod 100 is provided with and presses hole 50, and the described hole 50 that presses is connected with die cavity 40 or running channel 30,
Described compression mod 100 also includes and presses the booster rod 60 that hole 50 is adapted.
In the present embodiment, described running channel 30 one end is charging aperture, and the other end is connected with die cavity 40, described compression mod 100
It is provided with passage（In figure is not shown）, for excluding the gas in running channel 30 and die cavity 40, described die cavity 40 is compression mod 100
Middle formed die-cast product profile chamber portion, described running channel 30 be compression mod 100 in from charging aperture to die cavity the cavity between 40
Part and the chamber portion from die cavity 40 to passage.
After technique scheme, during die casting, fused raw material liquid enters running channel 30, die cavity 40 and point from charging aperture
Pressure hole 50, and be full of running channel 30, die cavity 40 and when pressing hole 50 in raw material, to booster rod 60 high-pressure power so as to by point
The material extruding hollow chamber 40 that prestores in pressure hole 50, in running channel 30.Described press the raw material that hole prestores and extrude hollow under high pressure
During chamber 40, running channel 30, in the raw material that powerful pressure makes in die cavity, puff is got to be compacted, and forces in die cavity
The bubble retaining is able to discharge from passage, thus obtaining the pressure that density is high, bubble-free, pliability is good, mechanical property is good
Foundry goods.On compression mod 100, setting presses hole 50 and booster rod 60, enabling realizes casting in same compression mod 100 and forges
Make.
The technical program also has two important technique effects：
1st, less due to pressing hole 50 cross-sectional area, promote booster rod 60 in the equally big pressure of use and press in hole 50
When material extruding hollow chamber 40, running channel 30, the pressure suffered by raw material in die cavity 40 at double or decades of times increase, can be effective
Compacting raw material in loose part and discharge air；
2nd, when booster rod 60 promotes the material extruding hollow chamber 40 pressing in hole 50, running channel 30, the raw material in die cavity is squeezed
Pressure flowing, raw material pliability and mechanical property are lifted further, can play the technique effect of forging and stamping.
Refer to Fig. 1-2, described running channel 30 is divided into main running channel 31, point running channel 32 and outer running channel 33, described main running channel 31
Connect with a point running channel 32, described point of running channel 32 is connected with die cavity 40, and described outer running channel 33 is also connected with die cavity 40.In the present embodiment
In, described main running channel 31 is in communication with the outside, and one end of described main running channel 31 is charging aperture, and described point of running channel 32 is from main running channel 31
The running channel towards die cavity 40 separating, as the branch in river, for controlling fused raw material liquid to the flow velocity of die cavity 40, with
When the raw material liq in main running channel is transported in multiple die cavities, described outer running channel 33 be compression mod 100 in from die cavity 40
Chamber portion between passage, the gas being easy in die cavity 40 is fully discharged, in the present embodiment, the quantity of described die cavity 40
For two, it is opened in main running channel 31 both sides respectively, certainly, the quantity of described die cavity 40 and position can be according to technique and productions
Needs be changed.
After technique scheme, in same compression mod, it is provided with multiple die cavities, a point running channel 32 will be former in main running channel 31
Material is transported in multiple die cavities 40, so that each die casting can obtain multiple die casting workpiece, greatly improves production efficiency.
Additionally, the setting of outer running channel 33 make gas in die cavity 40, impurity to first pass through outer running channel 33 then discharge from passage again,
The raw material in die cavity 40 is allow to flow to passage from outer running channel 33, so that the gas in die cavity 40, impurity are excluded
More abundant.
It is worth especially set out, more than one die cavity 40 in described compression mod 100, can be provided with（When compression mod 100
During middle only one of which die cavity 40, point running channel 32 can not be set）, each die cavity 40 can be connected with multiple points of running channels 32, often simultaneously
Individual die cavity 40 can be connected with multiple outer running channels 33, point running channel 32 being connected with each die cavity 40 and the number of outer running channel 33 with
The size of this die cavity 40 is relevant.But each die cavity 40 can not set outer running channel 33 it might even be possible to not set passage, simply compares
Poor compared with the technique effect of the compression mod 100 in the present embodiment.Can certainly be poured according to the unrestricted choice that needs of actual production
The various combination in road 30, die cavity 40 and passage.Multiple die cavities 40 are set in compression mod 100 and can be obtained by accordingly many pressures
Foundry work part.
Refer to Fig. 1-2, a kind of compression mod 100 that the present invention provides, described die cavity 40 is connected with running channel 30 company at place
The cross-sectional area connecing place's running channel 34 is less than the cross-sectional area of point running channel 32, outer running channel 33 and die cavity 40.Die cavity so can be reduced
Raw material in 40 and the contact area of the raw material in running channel 30, so that the die casting workpiece in die cavity 40 is easier in running channel 30
Die casting separates, thus improve production efficiency, reducing production cost, improves the quality of die casting workpiece simultaneously.
Refer to Fig. 1-2, a kind of compression mod 100 that the present invention provides, the described hole 50 that presses is connected with running channel 30.In this reality
Apply in example, the described hole 50 that presses is arranged on compression mod 100, and described running channel 30 and die cavity 40 are arranged in compression mod 100, real
Gas in cast-in-place road 30 and die cavity 40 or liquid are with the gas pressing in hole 50 or liquid communication it is necessary to make to press hole 50 and pour
Road 30 or die cavity 40 connect.In the present embodiment, compression mod 100 be provided with more than one press hole 50, described press hole 50
Correspond to the position of the running channel 30 in compression mod 100 in the position on compression mod 100, that is, the described hole 50 that presses is direct with running channel 30
Connect, and majority is pressed hole 50 and directly connected with outer running channel 33.
After technique scheme, return in running channel 30 in die casting by pressing the material extruding prestoring in hole 33, running channel
Raw material in 30 extrudes the raw material in die cavity 40 again, so that puff in the raw material in die cavity is got to be compacted, and forces in die cavity
The bubble retaining is able to discharge from passage, thus the density of die carter part not only can having been increased in die cavity 40 but also can having avoided
Die casting surface of the work in die cavity 40 produces bubble, can also be without producing direct shadow to the die-cast product surface in die cavity 40
Ring, thus avoiding being arranged on pressing hole 33 on die cavity 40, needing cutting former in hole 33 positioned at pressing after die cavity 40 cools down
Material and later stage polishing, improve production efficiency.
It is worth especially set out, the pressing hole 50 and both directly can connect with running channel 30 of distribution on compression mod 100, also may be used
Directly to connect with die cavity 40, the hole 50 that presses that can also have directly is connected with running channel 30, have to press hole 50 straight with die cavity 40
Lead in succession.When pressing hole 50 and directly connecting with die cavity 40, further respective handling need to be done to the die casting workpiece in die cavity 40,
So that this die casting workpiece meets requiring.
Refer to Fig. 1-2, a kind of compression mod 100 that the present invention provides, the described hole 50 that presses is circular hole.Press hole 50 permissible
Be designed to square hole, tri-angle-holed, polygonal hole or elliptical aperture, in the present embodiment, press hole 50 and be designed as circular hole, so and its
Matching used booster rod 60（In figure is not shown）Also it is cylinder, after technique scheme, during one side die casting, increase
Depression bar 60 is easier and presses hole 50 and align, and on the other hand circle can bear bigger pressure, so that booster rod 60 is more preferable
More stable extruding presses the raw material in hole 50, additionally, pressing hole 50 to be designed as circular hole, makes booster rod 60 and die casting contact surface
For circle, such that it is able to greatly reduce the stress on die casting surface during die casting.
Refer to Fig. 1-2, a kind of compression mod 100 that the present invention provides, the quantity of described point of mould is two, respectively first
Mould 10 and the second mould 20, described first mould 10 is quiet mould 10, and described second mould 20 is dynamic model 20, and the described hole 50 that presses is located at dynamic model
On 20.In the present embodiment, during die casting, described first mould 10 is fixedly installed on the workbench of die casting machine, as quiet mould 10,
Second mould 20 is arranged on die cylinder, as dynamic model 20.Described press the peace that a compressing cylinder is easy in hole 50 on dynamic model 20
Dress, thus convenient control booster rod 60 extruding to press the raw material in hole 50.Additionally, quiet mould 10 is installed on the table, Ke Yicheng
By bigger pressure, press hole 50 and be arranged on dynamic model, during die casting, booster rod 60 extruding presses the raw material in hole 50, extruding force
Act on quiet mould 10, quiet mould 10 transmits the force to workbench, so that die casting equipment design is simple, decrease unnecessary setting
Meter, has saved resource, has also improved production efficiency.
It is worth especially set out, the quantity of point mould of compression mod 100 can be one, two or more, usual feelings
Under condition, the quantity of point mould is two.Certainly, in the case of part comparison to be produced is simple, compression mod 100 can be one
Individual overall or use cooperatively with one block of steel plate；In the case of part comparison complexity to be produced, engineer can be according to life
Production. art needs to be three or four by the quantitative design of 100 points of moulds of compression mod, in order to die casting.
It is worth especially set out, the first mould 10 of compression mod 100, the second mould 20 two can be dynamic model 20 with one, another
One mould is quiet mould 10 it is also possible to be both dynamic model 20, but in actual production process, seldom has and be designed to move by two moulds
Mould 20, in the present embodiment, the first mould 10 is quiet mould 10, and the second mould 20 is dynamic model 20.The described hole 50 that presses can be located at first
It is also possible on the second mould 20 on mould 10, can also a part press hole 50 on the first mould 10, another part is located at
On two moulds 20；Press hole 50 to be formed with the second mould 20 matched moulds by the first mould 10, in a word, pressing hole 50 can be according to need
Diverse location on compression mod 100 to be located at.In the present embodiment, described press hole 50 all on dynamic model 20.
Refer to Fig. 1-2, a kind of compression mod 100 that the present invention provides, described first mould 10 be provided with the first half running channels and
The first half die cavities, described the first half running channels are smoothly connected with the first half die cavities, described second mould 20 be provided with the second half running channels and
The second half die cavities, described the second half running channels are smoothly connected with the second half die cavities, and after matched moulds, described the first half running channels and the second half pour
Road forms running channel 30, and described the first half die cavities and the second half die cavities form die cavity 40, and described running channel 30 is connected with die cavity 40.At this
In embodiment, described quiet mould 10 is provided with the first half running channels and the first half die cavities, and described the first half running channels are a plane, and described the
Half running channel is smoothly connected with the first half die cavities, and described dynamic model 20 is provided with the second half running channels and the second half die cavities, and described second
Half running channel is smoothly connected with the second half die cavities, and after matched moulds, described the first half running channels and the second half running channels form running channel 30, and this pours
Road 30 is fully located on dynamic model 20, and described the first half die cavities and the second half die cavities form die cavity 40, described running channel 30 and die cavity 40
Smooth connection.
After technique scheme, die cavity 40 and running channel 30 have two parts to constitute, and are easy to the good die casting workpiece of die casting
Separation；Running channel 30 is completely on dynamic model 20, reduces Design of Dies and the cost making.It is worth especially set out, matched moulds
Running channel 30 afterwards might not be divided equally by land area, and described running channel 30 can be completely on the first mould 10 or on the second mould 20.
It is worth especially set out, in this embodiment, using the second half die cavities on dynamic model and the second half running channel phenotypes
Chamber 40 and running channel 30, it is only for be easy to explain the present invention.
Refer to Fig. 1-2, a kind of compression mod 100 that the present invention provides, it is framed and detachable that described point of mould includes point mould
Be arranged on this point of mould framed on point mould core rod, described die cavity is on point mould core rod.In the present embodiment, described quiet mould 10
Including quiet mould framed 12 and be detachably arranged in quiet mould core rod 11 on quiet mould framed 12, described die cavity 40 is located at quiet mould mould
On core 11, described dynamic model 20 includes dynamic model framed 22 and is detachably arranged in dynamic model core rod 21 on dynamic model framed 22, institute
State die cavity 40 on dynamic model core rod 21.After technique scheme, during die casting, only need to ceaselessly change dynamic model core rod 21
Just continuously can produce die casting with quiet mould core rod 11, substantially increase production efficiency.It is worth especially set out, somewhat different
The compression mod 100 planted can use the quiet mould of identical framed 12 and dynamic model framed 22, so can reduce production cost, improves life
Produce efficiency.
The present invention also provides a kind of pressure casting method, and this pressure casting method carries out die casting using above-mentioned compression mod 100, specifically includes
Following steps：
Step 210, installs a point mould, and in the present embodiment, described point of mould is respectively quiet mould 10, dynamic model 20, needs before die casting starts
Complete following preparation：
1st, the selection of compression mod 100 and cleaning.First according to product to be produced（I.e. die casting workpiece）Quantity and size design
Or select suitable compression mod 100, compression mod 100 surface is cleared up and other are processed accordingly.
2nd, the debugging of die casting equipment.Die casting equipment is debugged, is normally carried out with guaranteeing that die casting works,
3rd, the installation of compression mod 100.It is separately mounted to framed for each point of mould on die casting equipment, each point of mould core rod is installed to each
On corresponding point of mould is framed.Specifically, framed for dynamic model 22 are installed on the piston boit of die cylinder, dynamic model core rod 21 is installed
To on dynamic model framed 22, framed for quiet mould 12 are installed on workbench, quiet mould core rod 11 is installed on quiet mould framed 12 so that
Die cavity 40 on dynamic model 20 is corresponding to the die cavity 40 on quiet mould 10 so that the hole 50 that presses on dynamic model 20 can be with booster rod 60 1
One is corresponding, adopts vertically-mounted compression mod 100 in the present embodiment, and the vertically-mounted molten metal bath that increases of compression mod 100 is pouring
Air in die cavity 40 can preferably be discharged by the flow process in road 30 and die cavity 40.
4th, the refining of molten metal bath.Divided according to the quantity of running channel 30, the size of die cavity 40 and die casting workpiece to be produced
Do not calculate the demand of the molten metal bath of each compression mod 100 and the aggregate demand of total molten metal bath, according to total
The aggregate demand of molten metal bath determines the aggregate demand of raw metal, and the raw metal weighing aggregate demand is put in smelting furnace,
Melt out enough molten metal baths in a furnace and keep constant temperature, the temperature of described molten metal bath is on fusing point, with true
Insurance money genus is in melting state, and the demand of the molten metal bath of each compression mod 100 is referred to as the molten metal bath of predetermined amount, choosing
Take suitable container for the molten metal bath of transhipment predetermined amount during injection.
Each preparation can be interlocked above, synchronization is carried out, in no particular order.
Before strictly completing die casting, first preparation guarantee that die casting work can smoothly go on, and second guarantees and carries
The quality of the good workpiece of high die casting, three are reduced resource and the waste of the energy.
Step 220, will divide mould matched moulds, be formed with die cavity 40 and running channel 30 in the compression mod 100 after matched moulds.That is, by first
It is formed with die cavity 40 and running channel 30 in compression mod 100 after mould 10 and the second mould 20 matched moulds, the first mould 10 and the second mould 20 matched moulds.
Specifically, respectively the first mould 10 and the second mould 20 are preheated, by the first mould 10 and the second mould after the completion of preheating
It is formed with die cavity 40 and running channel 30 in compression mod 100 after 20 matched moulds, the first mould 10 and the second mould 20 matched moulds.
In the present embodiment, described first mould 10, the second mould 20 are respectively quiet mould 10, dynamic model 20.By heating system pair
Dynamic model 20, quiet mould 10 heat, and make dynamic model 20 and the temperature of quiet mould 10 be maintained at 200 DEG C -250 DEG C（Molten less than raw metal
Point）, such one reduces dynamic model 20, the moisture on quiet mould 10, it is to avoid produce when molten metal bath enters in running channel 30 and die cavity 40
Unboiled water steam, it is to avoid die casting surface therefore produces bubble, thus improve the quality of die casting；Furthermore slow down molten metal bath to enter
Cooling velocity when entering in die cavity 40, reduces and produces moment solidification when molten metal bath enters in die cavity 40 on cavity wall
Phenomenon, thus improve the quality of die casting.After the completion of preheating, start die cylinder by dynamic model 20 and quiet mould 40 matched moulds, and will move
Mould 20 is fixed on quiet mould 10, waits die casting.It is formed with die cavity 40 and running channel 30 in compression mod 100 after matched moulds.
In the present embodiment, refer to Fig. 3, step（1）I.e. step 230, by fused raw material liquid injection to running channel 30, type
Chamber 40 and pressing in hole 50, makes fused raw material liquid be full of running channel 30, die cavity 40 and press hole 50.
Specifically, injection oil cylinder by the motlten metal raw material liq of predetermined amount from the slow injection of charging aperture to running channel 30 He
In die cavity 40, injection speed is 0.005-1m/s, and this is the injection first stage；When running channel 30, die cavity 40 and press in hole 50
During full of raw material liq, that is, reach injection summit, then increase the injection pressure of injection oil cylinder, boost pressure size is 0-
200T, pressurization time is 1-15s, by more material extrudings to running channel 30 and die cavity 40, and then makes the air in die cavity 40
Fully discharge.This is injection second stage.The injection pressure of second stage is more than the injection pressure of first stage.Described first rank
Duan Weicong starts injection to the process reaching injection summit, and second stage is to increase injection pressure when reaching injection summit and tie up
Hold the constant process of pressure.Wherein, supercharging size and pressurization time are common by the size of die casting and the characteristic of raw metal
Determine, in actual production process, the pressurization time of each die casting and supercharging size are by experience and continuous test
Obtain.
After technique scheme, the molten metal bath of predetermined amount can be completely filled with running channel 30, die cavity 40 just
And press hole 50, thus economizing in raw materials, improve operating efficiency；Injection oil cylinder is by slow for the molten metal bath of predetermined amount injection
To in running channel 30, die cavity 40 so that molten metal bath can in running channel 30, die cavity 40 cooling shaping, when reaching injection summit
Injection oil cylinder moment is pressurized, and with high pressure to the material extruding in die cavity 40, and keeps a period of time, can be further by die cavity
Air exclusion in 40, reduces die casting surface or producing bubbles inside, in another aspect injection oil cylinder supercharging extruding die cavity 40
Raw material, plays part forging and stamping effect so as to increase in cooling shaping process Midst density, improves the quality of die casting, additionally, protecting
Hold high pressure to match with next step.
Step（2）I.e. step 240, promotes booster rod 60, and booster rod 60 is back to pressing the material extruding prestoring in hole 50
In running channel 30, die cavity 40.
In the present embodiment, after injection starts, molten metal bath enters to become owner of running channel from charging aperture, then along a point running channel 30
Flow to each die cavity 40 respectively, and flow to running channel 33 in die cavity 40, and be connected with outer running channel 33 from outer running channel 33 flow direction
Press hole 50, the molten metal bath in main running channel 31 and point running channel 32 also flows to and its phase while flowing to each die cavity 40
Each of connection presses hole 50, and the gas in die cavity 40 from passage and presses discharge in hole 50, because compression mod 100 is vertically pacified
Dress, so molten metal bath is interior in running channel 30 slowly moving upwards, is easy to the gas exclusion in die cavity 40.
In the present embodiment, after injection process enters second stage 0-10s, that is, after injection oil cylinder supercharging 0-10s, both
After reaching injection summit 0-10s, start point compressing cylinder, press hydraulic oil cylinder driving booster rod 60 and will press the raw material prestoring in hole 50
Extruding is back to running channel 30, in die cavity 40, this process is the process that presses, and point pressure pressure is 0-200T, and the time that presses is 1-15s.Should
During pressing, point compressing cylinder high drive booster rod 60 returns press the material extruding prestoring in hole 50 to running channel 30, die cavity 40
Interior, in the raw material that powerful pressure makes in die cavity 40, puff is got to be compacted, and forces the bubble retaining in die cavity 40 to obtain
To discharge from passage, so that the structure of the raw material in die cavity 40 is more closely knit, thus obtaining, density is high, bubble-free die casting
Part.Wherein, pressing pressure size and the time that presses is to be together decided on by the size of die casting and the characteristic of raw metal, in reality
In the production process of border, pressing the time and pressing pressure size of each die casting is to be obtained with constantly testing, calculating by experience
?.
It is worth especially set out, injection oil cylinder pressurization and press process and can synchronously carry out；Can also be in injection
After oil cylinder supercharging but at the end of supercharging not, start and press process；After injection oil cylinder pressurization terminates, then can also open
Dynamic point presses through journey.
After technique scheme, the material extruding prestoring is returned in running channel 30, forces in running channel 30 by point compressing cylinder
Material extruding die cavity 40 in raw material, thus by the air exclusion in running channel 30, die cavity 40, thus by the raw material in die cavity 40
Middle puff is got to be compacted, and plays the effect of forging and stamping, so that the structure of the raw material in die cavity 40 is more closely knit, thus obtaining close
The little die casting of degree height, bubble-free, stress, additionally, high pressure presses holding a period of time, be and second stage in injection process
（Pressurization）Match, the molten metal in die cavity 40 making is molded under high pressure, maintain density constant, it is to avoid gold in die cavity 40
Belong to liquid and produce deleterious effect during there is physical change, such as gas backstreaming, such as molten metal deformation, thus obtain
High-quality die casting.The die casting alloing die casting good carries out being heat-treated, the subsequent technique such as freeze, machine.
In injection process, injection oil cylinder is first by slow for the molten metal bath of predetermined amount injection to running channel 30, die cavity 40 and
Press in hole 50, the gas in preliminary exclusion die cavity 40.When reaching injection summit, one side injection oil cylinder supercharging high-pressure extrusion pressing type
Raw material in chamber 40, again exclusion die cavity 40 in gas, increase die cavity in raw material density；Another aspect subsequent start-up point presses oil
Cylinder, high drive booster rod 60 is back to pressing the material extruding prestoring in hole 50 in running channel 30 and die cavity 40, thus arranging again
Except the gas of residual in die cavity 40 is thus get puff in the raw material in die cavity 40 to be compacted, thus increasing in die cavity 40
The density of raw material.The supercharging of injection oil cylinder high pressure and both point compressing cylinder high pressure spot pressures are worked along both lines former in high-pressure extrusion die cavity 40
Material, thus playing the effect of forging and stamping so as to be molded during cooling, thus increase considerably the density of die casting, significantly
Reduce die casting surface and internal bubble, significantly reduce die casting surface stress, thus obtaining density height, bubble-free, answering
The die casting that power is little, pliability is good, mechanical property is good, and then the die casting workpiece alloing die casting good carries out being heat-treated, burns
The subsequent techniques such as weldering, machining.
The technical program also has two important technique effects：
1st, less due to pressing hole 50 cross-sectional area, promote booster rod 60 in the equally big pressure of use and press in hole 50
When material extruding hollow chamber 40, running channel 30, the pressure suffered by raw material in die cavity 40 at double or decades of times increase, can be effective
Compacting raw material in loose part and discharge air；
2nd, when booster rod 60 promotes the material extruding hollow chamber 40 pressing in hole 50, running channel 30, the raw material in die cavity is squeezed
Pressure flowing, raw material pliability and mechanical property are lifted further, can play the technique effect of forging and stamping.
Step（3）I.e. step 250, after the raw material cooling shaping in die cavity 40 and running channel 30, takes out from compression mod 100
Die casting.
In the present embodiment, after completing to press process, wait for a period of time, until the raw material in running channel 30 and die cavity 40 because
After extruding, cooling are molded completely, start die cylinder, dynamic model 20 is separated with quiet mould 10, then start point compressing cylinder by die casting
Good die casting ejection, completes press casting procedure.
Especially set out, after completing press casting procedure, only need to change quiet mould core rod 11 and dynamic model core rod 21 repeats step
Rapid 220,230,240,250 next press casting procedure of continuation, improve production efficiency.
Step 260, die casting workpiece good for die casting is completed subsequent technique as needed, is such as heat-treated, such as machines,
The trade mark die casting of such as 356#, 6061#, such as freezes.
The foregoing is only presently preferred embodiments of the present invention, be not limited to the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement done etc., all should include within the scope of protection of the invention.
Claims (13)
1. a kind of compression mod, is provided with die cavity and running channel in compression mod, described running channel connect with die cavity it is characterised in that：Described pressure
Mold is provided with and presses hole, and the described hole that presses is connected with die cavity or running channel, and described compression mod also includes and presses Kong Xiangshi
The booster rod joined.
2. as claimed in claim 1 a kind of compression mod it is characterised in that：Described compression mod includes two or more points
Mould, described point of mould is connected, and described die cavity and running channel are opened on point mould.
3. as claimed in claim 1 a kind of compression mod it is characterised in that：The described hole that presses is connected with running channel.
4. as claimed in claim 2 a kind of compression mod it is characterised in that：The quantity of described point of mould is two, respectively first
Mould and the second mould, the first mould is quiet mould, and described second mould is dynamic model, and the described hole that presses, on dynamic model, described presses Kong Weiyuan
Hole.
5. as claimed in claim 1 a kind of compression mod it is characterised in that：Described running channel is divided into main running channel, point running channel and outer
Running channel, described main running channel is connected with a point dealings, and described point of running channel is connected with die cavity, and described outer running channel is also connected with die cavity.
6. as claimed in claim 2 a kind of compression mod it is characterised in that：It is framed and dismountable that described point of mould includes point mould
Be arranged on this point of mould framed on point mould core rod, described die cavity is on point mould core rod.
7. a kind of pressure casting method, the method carries out die casting using the compression mod as described in claim 1-6 it is characterised in that including
Following steps：
（1）Running channel that fused raw material liquid injection is provided with to compression mod, die cavity and press in hole, make fused raw material liquid
Full of running channel, die cavity and press hole；
（2）Promote booster rod, booster rod by press the material extruding that in the hole prestores be back to running channel, in die cavity；
（3）After the raw material cooling shaping in die cavity and running channel, take out die casting from compression mod.
8. as claimed in claim 7 a kind of pressure casting method it is characterised in that：Step（1）In, described compression mod be by two or
Two or more divides mould to form, in step（1）Before, mould matched moulds will be divided, in the compression mod after matched moulds, be formed with die cavity and running channel；?
Before matched moulds, it is separately mounted to framed for each point of mould on die casting equipment, each point of mould core rod is installed to each self-corresponding point of mould mould
On frame.
9. as claimed in claim 7 a kind of pressure casting method it is characterised in that：In step（1）In, compression mod is preheated,
Compression mod is preheating to 220 DEG C -250 DEG C.
10. as claimed in claim 7 a kind of pressure casting method it is characterised in that：In step（1）In, by fused raw material liquid pressure
The process being incident upon in running channel and die cavity is divided into first stage and second stage, and the injection pressure of second stage is more than the first stage
Injection pressure.
11. as claimed in claim 10 a kind of pressure casting method it is characterised in that：In step（1）In, the described first stage be from
Start injection to the process reaching injection summit, second stage is to increase injection pressure when reaching injection summit and maintain pressure
Constant process, when described injection summit is that raw material liq has just been full of running channel, die cavity and has pressed hole, the pressure of described first stage
Firing rate degree is 0.005-1m/s, and the injection pressure size of second stage is 0-300T, and shot time is 1-15s.
12. as claimed in claim 10 a kind of pressure casting method it is characterised in that：In step（2）In, when injection process enters the
After two-stage 0-10s, begin through the raw material that prestores that booster rod extruding presses in hole, press pressure to press the raw material that prestores in hole
Power is 0-300T, and the time that presses is 1-15s.
13. as claimed in claim 7 a kind of pressure casting method it is characterised in that：In step（1）In, by predetermined amount fused raw material
Liquid injection, to running channel and die cavity, makes fused raw material liquid be full of running channel, die cavity and press hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886723.5A CN106424643A (en) | 2016-10-12 | 2016-10-12 | Die-casting die and die-casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886723.5A CN106424643A (en) | 2016-10-12 | 2016-10-12 | Die-casting die and die-casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106424643A true CN106424643A (en) | 2017-02-22 |
Family
ID=58174024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610886723.5A Pending CN106424643A (en) | 2016-10-12 | 2016-10-12 | Die-casting die and die-casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106424643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814314A (en) * | 2019-11-27 | 2020-02-21 | 深圳市昊翔压铸制品有限公司 | A casting and forging integrated die-casting machine |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02307660A (en) * | 1989-05-24 | 1990-12-20 | Nissan Motor Co Ltd | Locally pressurizing casting apparatus |
| JPH03142054A (en) * | 1989-07-20 | 1991-06-17 | Toshiba Mach Co Ltd | Pressure forging method which simultaneously executes parting of sprue and squeezing |
| JPH071102A (en) * | 1993-06-22 | 1995-01-06 | Honda Motor Co Ltd | Injection forming method |
| JPH09122874A (en) * | 1995-10-26 | 1997-05-13 | Toyota Motor Corp | Method for pressurization-releasing product from die and device for locally pressurizing product |
| JP2003062656A (en) * | 2001-08-23 | 2003-03-05 | Aisan Ind Co Ltd | Die casting method and equipment |
| JP2004202520A (en) * | 2002-12-24 | 2004-07-22 | Aisin Seiki Co Ltd | Casting method and device |
| CN201906813U (en) * | 2011-01-11 | 2011-07-27 | 东莞市东升压铸模具有限公司 | A secondary pressurized die-casting mold for manufacturing skulls |
| JP2013035008A (en) * | 2011-08-05 | 2013-02-21 | Fujino Gijutsu Consultant:Kk | Die casting machine and die casting method |
| CN203003115U (en) * | 2012-12-28 | 2013-06-19 | 苏州广型模具有限公司 | Die-casting die for manufacturing wind blade |
| CN104014760A (en) * | 2014-03-10 | 2014-09-03 | 宁波市俊博机械有限公司 | Die-casting die capable of preventing shrinkage cavity of casting and die-casting technique thereof |
| CN105817599A (en) * | 2016-04-26 | 2016-08-03 | 安徽纯启动力机械有限公司 | Die casting technology for shrinkage-prevention die casting |
-
2016
- 2016-10-12 CN CN201610886723.5A patent/CN106424643A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02307660A (en) * | 1989-05-24 | 1990-12-20 | Nissan Motor Co Ltd | Locally pressurizing casting apparatus |
| JPH03142054A (en) * | 1989-07-20 | 1991-06-17 | Toshiba Mach Co Ltd | Pressure forging method which simultaneously executes parting of sprue and squeezing |
| JPH071102A (en) * | 1993-06-22 | 1995-01-06 | Honda Motor Co Ltd | Injection forming method |
| JPH09122874A (en) * | 1995-10-26 | 1997-05-13 | Toyota Motor Corp | Method for pressurization-releasing product from die and device for locally pressurizing product |
| JP2003062656A (en) * | 2001-08-23 | 2003-03-05 | Aisan Ind Co Ltd | Die casting method and equipment |
| JP2004202520A (en) * | 2002-12-24 | 2004-07-22 | Aisin Seiki Co Ltd | Casting method and device |
| CN201906813U (en) * | 2011-01-11 | 2011-07-27 | 东莞市东升压铸模具有限公司 | A secondary pressurized die-casting mold for manufacturing skulls |
| JP2013035008A (en) * | 2011-08-05 | 2013-02-21 | Fujino Gijutsu Consultant:Kk | Die casting machine and die casting method |
| CN203003115U (en) * | 2012-12-28 | 2013-06-19 | 苏州广型模具有限公司 | Die-casting die for manufacturing wind blade |
| CN104014760A (en) * | 2014-03-10 | 2014-09-03 | 宁波市俊博机械有限公司 | Die-casting die capable of preventing shrinkage cavity of casting and die-casting technique thereof |
| CN105817599A (en) * | 2016-04-26 | 2016-08-03 | 安徽纯启动力机械有限公司 | Die casting technology for shrinkage-prevention die casting |
Non-Patent Citations (1)
| Title |
|---|
| 葛正浩等: "《金属材料成型及模具》", 31 August 2006 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814314A (en) * | 2019-11-27 | 2020-02-21 | 深圳市昊翔压铸制品有限公司 | A casting and forging integrated die-casting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103990775B (en) | Extruding metal autoform method and its product | |
| CN102756108B (en) | Semi-solid extruding and casting molding mould of compressor crankshaft and molding process | |
| KR101480631B1 (en) | Method and apparatus for press casting | |
| CN104014760B (en) | A kind of die casting that can prevent foundry goods shrinkage cavity and its extrusion process | |
| CN204735702U (en) | Three board die casting die structures of large -scale magnesium alloy parts center multiple feed | |
| CN102218520B (en) | Light-alloy die-casting, filling, forging and compacting integrated forming device | |
| CN206382536U (en) | Thin-wall part die casting and die-cast formation equipment | |
| CN103143685A (en) | Casting mold for cylindrical housing part and casting method by using the mold | |
| CN101293276B (en) | Method for casting brass ware | |
| CN106623856A (en) | Method and device for improving quality of squeezing and casting piston casting | |
| CN203426407U (en) | Car hub die-casting die | |
| CN106424643A (en) | Die-casting die and die-casting method | |
| CN2892325Y (en) | Aluminium alloy linking liquid die forging metal mould cavity structure | |
| CN109622835A (en) | A kind of casting forging of Model For The Bush-axle Type Parts is compounded to form device | |
| CN205996154U (en) | String cylinder extrusion casting machine | |
| CN204381299U (en) | A kind of sand cores of castings and make shell mould | |
| CN107243599A (en) | A kind of resin-coated sand shell mould, which is filled, applies casting technique without dartlike weapon side technology | |
| RU2393047C2 (en) | Method of producing spherical perform of ball valve plug | |
| CN106180644A (en) | String cylinder vertical extrusion casting machine | |
| CN217666249U (en) | Manufacturing die of nodular cast iron casting test bar | |
| CN204912714U (en) | Large -scale aluminum alloy squeeze casting's piston | |
| CN112854901B (en) | Casting mold for pouring door handles and manufacturing process of door handles and pouring door handles | |
| CN217775506U (en) | Nodular cast iron crankshaft gating system | |
| CN103192034B (en) | Integrated casting technology for braking drum with anti-cracking annular reinforcement rib for vehicle | |
| CN220387817U (en) | Ball valve casting sand casting mould capable of reducing production cost |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |