CN106583653B - The method for improving the feed performance of the riser of the semipermanent shape casting of cylinder cover - Google Patents
The method for improving the feed performance of the riser of the semipermanent shape casting of cylinder cover Download PDFInfo
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- CN106583653B CN106583653B CN201610880937.1A CN201610880937A CN106583653B CN 106583653 B CN106583653 B CN 106583653B CN 201610880937 A CN201610880937 A CN 201610880937A CN 106583653 B CN106583653 B CN 106583653B
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- sprue
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- 238000005266 casting Methods 0.000 title claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 claims abstract description 134
- 239000002184 metal Substances 0.000 claims abstract description 134
- 230000000151 anti-reflux Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 210000000088 Lip Anatomy 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a kind of methods of feed performance for improving the riser in semipermanent shape casting.The method includes providing the first container for being fluidly connected to die cavity and offer to be fluidly connected to the second container of riser；In addition, the method includes molten metal is transmitted to the first container and molten metal is transported in die cavity by sprue.It when die cavity reaches scheduled filling level, terminates to the first container and transmits molten metal, start to transmit molten metal to second container.In certain embodiments, the first container and second container group are combined into single container, and sprue is connected to die cavity by lower flow channel, and is connected to riser by upper runner.
Description
Background technique
The present invention relates generally to a kind of for being poured the improvement for the molten metal being used in semipermanent shape casting operation
Method, and the defects of casting is reduced while cooling more particularly to the feed performance for improving riser.
Casting is a kind of metal forming technology, it is characterized in that molten metal is poured into mold and allows its solidification.Gold
An advantage for belonging to casting is that products obtained therefrom can almost have any configuration.Although casting provides many benefits, due to
Shrinkage cavity (hot spot), the generation of cold shut or misrun emerged and the problem in terms of meeting with finished product cast quality.Most of metal is in liquid
Be not so good as when body it is dense when solid, therefore, casting natural shrinking while cooling.Natural shrinking of the liquid metals during solidification can be
Solidification finally leaves a void, and the gap is referred to as shrinkage cavity.
In order to reduce the generation of shrinkage cavity formation, casting system generally includes one or more riser.Riser (is also referred to as sent
Glassware) it is to construct in metal mold to prevent the reservoir due to chamber caused by shrinking.Excessive molten metal is filled out in mold
It is flowed into riser during filling.The deflation or receipts for the molten metal for needing additional molten metal to occur during compensating casting technique
Contracting.Metal from riser fills these gaps generated in casting when the metal from casting tightens.In order to fill metal
Tighten the gap left, the metal from riser must remain under liquid than main body casting.Riser it is best
Design will be helpful to reduce shrinkage cavity and ensuring that molten metal can easily flow into casting when demand occurs.
But riser only works when meeting three conditions: riser is cooling after casting, and riser has enough materials
Material shrinks to compensate casting, and casting is towards riser directional solidification.In order to keep riser cooling after casting, riser must compare
Casting is more slowly cooling.In the current production of the semipermanent shape casting of such as cylinder cover, usually using underfill or side
Face filling casting design and heavy unlimited riser.During mold filling, molten metal flows through casting cavity, and wherein riser is last
The part of filling.Therefore, because heat is lost when it passes through casting cavity in molten metal, so the temperature of the molten metal in riser
Degree is usually lower, and the feed performance of riser significantly reduces.
A kind of method of feed performance for improving riser is continuously needed to allow die cavity to be improved using molten metal
Formula backfill, to prevent the related shrinkage of the shrinkage cavity formation between freezing period and the base metal in casting cavity.
Summary of the invention
For background above, the embodiment of the present invention relates generally to the feed for improving the riser in semipermanent shape casting
The method of performance.According to the first aspect of the invention, the method packet of the feed performance of the riser in semipermanent shape casting is improved
It includes and provides the first container for being fluidly connected to die cavity and offer is fluidly connected to the second container of riser.The method is also
Including transmission molten metal to the first container.In addition, the method includes being transmitted to the molten of the first container by sprue
Melt metal to be transported in die cavity.Then, the method includes being terminated when die cavity reaches scheduled filling level to the first container
Transmit molten metal.Finally, just being transmitted to second container the method includes transmitting molten metal once terminating to the first container
Molten metal.
According to another aspect of the present invention, the method for improving the feed performance of the riser in semipermanent shape casting includes mentioning
The container of die cavity is fluidly connected to for use by sprue and lower flow channel.In addition, the method includes providing upper runner to be formed
Fluidly connecting between sprue and riser.The method also comprise molten metal is transmitted to container and by sprue and
The molten metal for being transmitted to container is transported in die cavity by lower flow channel.Finally, the method includes being melted by upper runner
Metal is transported to riser.
Detailed description of the invention
The described in detail below of the preferred embodiment of the present invention can be best understood when combining the following figure to read, in the following figure
In, similar structure is indicated and wherein with similar reference symbol:
Fig. 1 is the schematic diagram of the inside of the mold of many aspects according to the present invention；
Fig. 2 is the perspective view of mold according to an aspect of the present invention；
Fig. 3 is the perspective view of mold according to another aspect of the present invention；
Fig. 4 is the schematic diagram of the inside of the mold of many aspects according to the present invention；
Fig. 5 is the schematic diagram of the inside of the mold of many aspects according to the present invention；And
Fig. 6 is the schematic diagram of the inside of the mold of many aspects according to the present invention.
Specific embodiment
A kind of method help of feed performance that improving the riser in semipermanent shape casting overcomes and mitigates and finally cast
Shrinkage cavity in part forms associated problem.Particularly, the method assists in ensuring that form the molten metal of riser casts in main body
It is cooling to allow the molten metal in riser to compensate contraction of the casting during cooling and solidification after part.
The casting technique that die cavity is filled using pressure does not need riser.This kind of compression casting technique includes but is not limited to height
Compression mould casting, extrusion casint and low pressure die casting.In this way, compression casting technique is different and does not need in the present invention
The method of the feed performance of the riser in the semipermanent shape casting of improvement discussed.The semipermanent molding casting discussed in the present invention
It makes and comes feed and filling mold dependent on gravity and form final casting.
Method includes providing the first of the die cavity 40 being fluidly connected in mold 45 to hold according at least one embodiment
Device 10 and the second container 20 for being fluidly connected to riser 30.Molten metal is initially sent to the first container 10.It is transmitted to
The molten metal of one container 10 is transported in die cavity 40 by sprue 50.The melting of die cavity 40 is transmitted to by sprue 50
Metal fills die cavity 40.Once die cavity 40 has been filled into scheduled filling level, molten metal is just terminated to the first container 10
Flowing and start to second container 20 transmit molten metal.There is provided the molten metal filling riser 30 of second container 20 simultaneously
And for compensating contraction of the casting during cooling and solidification.
With reference to Fig. 1, the first container 10 is fluidly connected to die cavity 40.In at least one embodiment, the first container 10 is logical
It crosses sprue 50 and is connected to die cavity 40.In other embodiments, sprue 50 is connected to die cavity 40 by runner 60.According to casting
Standard definition and understanding in industry, sprue is substantially vertical channel, and fluent material is introduced into mold by it, and is flowed
Road is the channel that sprue is connected to the basic horizontal of cast gate, and the cast gate then leads to single casting cavity, such as top box or
Nowel.
The first container 10 can be structured to receive any reservoir of the molten metal for being transmitted to die cavity 40.Example
Such as, the first container can be pouring basin or sprue cup.
Second container 20 is fluidly connected to riser 30.With reference to Fig. 2, at least one embodiment, second container 20 is
The open-top of riser.In these embodiments, riser 30 extends through mold 45 and is open with being formed in the outer wall of mold 45,
The opening is directly connected to riser 30.Molten metal can be transferred directly in riser 30 by the open-top of riser.It will melt
Melt the such benefit of open-top (second container 20) offer that metal is transferred directly to riser: at the molten metal in riser 30
In maximum temperature and therefore liquid is kept to fill with casting solidification and tighten any shrinkage cavity formed.
In at least one embodiment, the first container 10 and second container 20 are adjacent.In this context, close to table
Show the first container 10 and second container 20 is positioned side by side and the first container 10 and second container 20 separate at a distance from be less than 50mm.
Close to further including that other containers known to single pouring basin or those of skill in the art are divided in order to form the first container 10
With the example of second container 20.The first container 10 and second container 20 are positioned to very close to allowing from transmission molten metal to the
Fast transition of one container 10 to transmission molten metal to second container 20.In various embodiments, from transmission molten metal to
The transition of the first container 10 to transmission molten metal to second container 20 is completed in 10 seconds, in 5 seconds and in 3 seconds.
In various embodiments, the molten metal for being transmitted to second container 20 is transported to riser 30.With reference to Fig. 3, extremely
In few one embodiment, molten metal is transported to riser 30 from second container 20 via wasteway 70.For example, second container 20
In molten metal may pass through channel or the sink that second container 20 is connected to riser 30.In one or more embodiments,
Wasteway 70 can be closed to prevent oxidation of the molten metal during filling.In addition, wasteway 70 may include help maintain or
Even increase the exothermic material of the temperature of molten metal.
With reference to Fig. 4, at least one embodiment, molten metal passes through the second sprue 52 and second flow channel 62 from second
Container 20 is transported to riser 30.For example, molten metal is provided to second container 20, second container 20 is with the second sprue 52
It is fluidly connected to riser 30 with second flow channel 62, molten metal is transported to riser by the second sprue 52 and second flow channel 62
30.In various embodiments, the second sprue 52 is arranged near the open-top of riser, near die cavity 40 or therebetween
Any position is connected to riser 30 via second flow channel 62.Second sprue 52 and the connection of second flow channel 62 are located in die cavity
40 nearby allow riser 30 from underfill, and the connection of the second sprue 52 and second flow channel 62 is located in opening wide for riser
Near top allows persistently to be added to fresh molten metal when filling riser 30 top of riser 30.
For conventional cast system, molten metal fills die cavity 40 bottom-up.The leading edge of molten metal or surface with
Filling die cavity 40 and the fresh molten metal of addition promoted to die cavity 40.During the filling of die cavity 40, riser 30 is to fill out
It the decline filled and is therefore generally used for being introduced into the molten metal filling of mold 45 at the beginning of close to casting process.Cause
This, is since heat is lost when through die cavity 40 in molten metal, so the temperature of the molten metal in riser 30 is usually lower, and
And the feed performance of riser significantly reduces.Although the practical temperature drop of molten metal depends on casting weight and geometry, lead to
It is often 10 to 50 DEG C of decline.The utilization of the embodiment of the present invention allows to be filled riser 30 with fresh molten metal, described fresh molten
Melt metal not by the thermal losses for passing through die cavity 40.When molten metal in riser 30 is therefore longer after the filling of mold 45
Between keep melting and the shrinkage cavity that can for longer periods flow in die cavity 40 during filling the solidification of casting is formed.
By molten metal provide riser 30 without make molten metal pass through die cavity 40 improve riser feed performance and
The quality of gained casting.For example, in the production of the semipermanent shape casting of the cylinder cover for engine, the feed of riser
It can be respectively improved with the porosity of gained cast type cylinder cover.Specifically, with reference to Fig. 2, when directly molten metal is passed
When being sent to the open-top of riser, the metal temperature in riser 30 can increase at least 20 DEG C when casting cylinder cover.Due to melting
Temperature of the metal when being transmitted to riser 30 increases, so 30 configuration of identical riser for combining identical die cavity 40, riser
Feed performance improvement 10%.The 10% of the feed performance of riser improves the premise that the molten metal in riser 30 solidifies completely
Additional 50 seconds have been supplied, and therefore provide the additional time for the molten metal in riser to backfill casting during solidification.
The feed performance of improved riser also allows the porosity level in casting to reduce at least 10%.Equally, with reference to Fig. 3 and Fig. 4, when
When being transmitted in second container 20 by molten metal and be directly taken riser 30, the metal temperature in riser 30 can be in casting vapour
At least 10 DEG C are increased when cylinder cap.Since temperature of the molten metal when being transmitted to riser 30 increases, so for combining identical molds
The identical riser configuration of chamber 40, the feed performance improvement of riser 5% to 10%.The 5% to 10% of the feed performance of riser changes
Into at least providing additional 25 seconds before the molten metal in riser 30 solidifies completely.It therefore, is the melting gold in riser 30
Belong to and provides the additional time to backfill casting during solidification.The feed performance of improved riser also allows the porosity in casting
Level reduces at least 5%.
Integrated anti-reflux mechanism may additionally include in casting system.Once when die cavity 40 reaches scheduled filling level
It terminates to the first container 10 and transmits molten metal, integrated anti-reflux mechanism can be activated.Integrated anti-reflux mechanism is used for
Prevent the reflux of metal in front of when termination transmits molten metal to the first container 10.In addition, integrated anti-reflux mechanism prevents
The reflux of metal in front of when starting to transmit molten metal to second container 20 and riser 30.As molten metal fills riser
30, increased by the head pressure that the molten metal in riser 30 provides, so that the molten metal in sprue 50 attempts to flow back out
It goes to reach balance.Prevent the reflux of front molten metal from facilitating by allowing the level of the molten metal in sprue 50 to exist
Metal yield is improved under the level of molten metal in riser 30.In the case where no anti-reflux mechanism, sprue 50
It will coordinate with the liquid level of the molten metal in riser 30, so that reaching gravitational equilibrium.
In various embodiments, with reference to Fig. 1, anti-reflux mechanism is slide 82, between runner 60 and die cavity 40
Opening.In other embodiments, slide 82 can be positioned so that opening between sprue 50 and the first container 10, sprue
Opening between 50 and runner 60, along the position of sprue 50 or the position of the length along runner 60.Slide 82 can be positioned in
The reflux of molten metal is prevented from anywhere in the path that molten metal is provided to die cavity 40.
With reference to Fig. 5, in other embodiments, integrated anti-reflux mechanism is to be positioned to promote molten metal along sprue 50
Hydraulic cylinder 84.Molten metal, liquid are transmitted once being terminated when die cavity 40 reaches scheduled fill level to the first container 10
Compressing cylinder 84 can continue the melting in front of propulsion while additional molten metal is sent to second container 20 and riser 30
Metal.In addition, hydraulic cylinder 84 is for preventing the molten metal in sprue 50 from returning when molten metal is added to riser 30
Stream.
In at least one embodiment, sprue 50 is fluidly connected to die cavity 40 at least one position during filling
Gravitational base.For the purposes of the present invention, gravitational base is the lowest side relative to gravity.In this way, providing to die cavity 40
Molten metal gradually fills die cavity 40 by the minimum point entered in die cavity 40 and from bottom.
In at least one embodiment, sprue 50 is fluidly connected to die cavity 40 at least one position during filling
Gravitational base.For the purposes of the present invention, gravity side is the die cavity 40 when the lowest side relative to gravity is defined as bottom
Side.The side of die cavity 40 will be entered in this way, providing to the molten metal of die cavity 40.
Method includes: to provide the single container for being fluidly connected to die cavity 40 Yu riser 30 according at least one embodiment
100.Single container 100 is connected to die cavity 40 by sprue 50 and lower flow channel 160.Equally, single container 100 also passes through casting
Road 50 and upper runner 162 are connected to riser 30.The method also includes molten metal is transmitted to single container 100 and is passed through
The molten metal for being transmitted to single container 100 is transported in die cavity 40 by sprue 50 and lower flow channel 160.Then, when additional
Molten metal when being sent to single container 100, molten metal is transported to by riser 30 by upper runner 162.
With reference to Fig. 6, single container 100 is fluidly connected to both die cavity 40 and riser 30.Sprue 50 passes through lower flow channel
160 are connected to die cavity 40 and are connected to riser 30 by upper runner 162.Upper runner 162 is oriented the length along sprue 50
Relative to lower flow channel 160 close to single container 100.Therefore, when molten metal is sent to single container 100 and by gravity edge
When sprue 50 is transported, molten metal initially passes through lower flow channel 160 and enters in die cavity 40.Molten metal continues through dirty
Road 160 carries out being shipped up to die cavity 40 full of molten metal or reaches required fill level, then will be melted by upper runner 162
Melt metal to be directly transported in riser 30 from sprue 50.It is molten in sprue 50 as die cavity 40 is initially filled with molten metal
The liquid level for melting metal also increases.When the filling level of die cavity 40 is enough to make the liquid level of the molten metal in sprue 50 to rise to
When the liquid level of runner 162, molten metal flows through upper runner 162 and enters in riser 30.
In at least one embodiment, molten metal is transferred to the first container 10, second container 20 and/or single with ladle
In container 100.Traditionally ladle is carried out by immersing ladle in crucible, dipping well or relevant device containing molten metal
Operation, to capture the molten metal of sufficient amount in the hollow inside of ladle, for transporting mold 45.Then by emptying steel
Molten metal is transmitted to mold 45 by packet.There are many design of different dippings/casting ladle, these designs are used in entire casting
In industry.These designs are selected generally according to the type of molten metal and mold 45 used.Common ladle utilizes slit, lip
Portion and baffle, or weir at the top of ladle come during reducing metal filling in furnace metal oxide be mingled with or ladle can
Ladle is flowed in and out including stopper rod to control metal.In addition, the modification of especially ladle will be those of skill in the art
It is known.
It will be understood by those skilled in the art that a variety of different materials can be used in semipermanent shape casting.With
In the alloy that the non-limiting example of the material of casting includes aluminium, magnesium, titanium, cast steel, copper alloy, superalloy (Ni alloy) or iron,
And element aluminum, magnesium, titanium or iron.All metals that can be carried out casting are all contemplated that.In at least one embodiment, semipermanent
Used as the aluminium of alloy or essentially pure aluminium in shape casting technique.
Semipermanent shape casting is a kind of common processes, allows to cast a variety of different articles.Non-limiting example includes passing
Defeated pump case, rotor case, control arm and water inlet.In at least one embodiment, method of the invention is used to casting hair
Engine cylinder lid.
It should be noted that the terms " preferably ", " general " and " usual " are not intended to limit the scope of the invention,
Or be not intended to imply certain features be for structure or function of the invention it is crucial, it is necessary or even important.On the contrary,
These terms be merely intended to highlight can be used in specific embodiments of the present invention or the substitution that can not use or additional spy
Sign.Moreover, the terms " substantially ", which are used to represent, is attributable to any quantitative comparison, value, measurement result or other tables
The inherent uncertainty degree shown.Thus, it can indicate the degree that quantificational expression can change from Static reference, and the degree is not
The basic function that will lead to the subject matter in discussing changes.
Although the present invention is described in detail referring to specific embodiments of the present invention, but it will be apparent that not carrying on the back
In the case where from range defined in the appended claims of the present invention, it can modify to the present invention and modification.More
Body, although some aspects of the invention be considered herein as it is preferred or particularly advantageous, however, it is contemplated that be
The present invention may be not necessarily limited to these preferred aspects of the invention.
Claims (7)
1. a kind of method for the feed performance for improving the riser in semipermanent shape casting, which comprises
The first container for being fluidly connected to die cavity is provided；
The second container for being fluidly connected to riser is provided；
Molten metal is transmitted to the first container；
The molten metal for being transmitted to the first container is transported in the die cavity by sprue；
When the die cavity reaches scheduled filling level, terminates to the first container and transmit the molten metal；
Once terminating to the first container and transmitting molten metal, molten metal is just transmitted to the second container；And
The molten metal for being transmitted to the second container is transported to the riser via wasteway；
Wherein the sprue includes integrated anti-reflux mechanism, and the integrated anti-reflux mechanism is positioned proximate to described pour
Opening between sprue-way and the first container, once being terminated when the die cavity reaches scheduled filling level to described first
Container transmits the molten metal, and the anti-reflux mechanism is just activated, and wherein the integrated anti-reflux mechanism is used for
It prevents the reflux of molten metal in front of when termination transmits molten metal to the first container and prevents from starting to described
The reflux of front molten metal when second container and riser transmission molten metal.
2. the method as described in claim 1, wherein the second container is the open-top of the riser.
3. the method as described in claim 1, wherein the first container and the second container are adjacent.
4. the method as described in claim 1, wherein the die cavity is configured to define engine cylinder cover.
5. the method as described in claim 1, wherein the integrated anti-reflux mechanism is slide.
6. the method as described in claim 1 is positioned at institute wherein the integrated anti-reflux mechanism is hydraulic cylinder
It states to terminate when die cavity reaches scheduled filling level and transmits the molten metal to the first container and terminate once to institute
The first container transmission molten metal is stated just molten metal is transmitted between the second container to push ahead along the sprue
The molten metal.
7. the method as described in claim 1, wherein the sprue fluidly connects during filling at least one position
To the gravitational base of the die cavity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/884259 | 2015-10-15 | ||
| US14/884,259 US9808858B2 (en) | 2015-10-15 | 2015-10-15 | Method to improve riser feedability for semi-permanent mold casting of cylinder heads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106583653A CN106583653A (en) | 2017-04-26 |
| CN106583653B true CN106583653B (en) | 2019-07-16 |
Family
ID=
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|---|---|---|---|---|
| CN101748324A (en) * | 2008-12-19 | 2010-06-23 | 鞍钢重型机械有限责任公司 | Method for casting super-large centrifugal cold mould by adopting nodular cast iron |
| CN201768884U (en) * | 2010-08-25 | 2011-03-23 | 柳州市志宝机械有限公司 | Brake wheel casting die |
| CN202779615U (en) * | 2012-10-26 | 2013-03-13 | 宿松恒达电气配件有限公司 | High temperature dead head structure for sand casting |
| CN103894550A (en) * | 2014-02-21 | 2014-07-02 | 杭州元鼎船舶设备有限公司 | Integrated copper alloy propeller hub casting equipment and special method thereof |
| CN104226915A (en) * | 2014-09-26 | 2014-12-24 | 衡阳中钢衡重铸锻有限公司 | Casting method of hollow shaft and casting mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748324A (en) * | 2008-12-19 | 2010-06-23 | 鞍钢重型机械有限责任公司 | Method for casting super-large centrifugal cold mould by adopting nodular cast iron |
| CN201768884U (en) * | 2010-08-25 | 2011-03-23 | 柳州市志宝机械有限公司 | Brake wheel casting die |
| CN202779615U (en) * | 2012-10-26 | 2013-03-13 | 宿松恒达电气配件有限公司 | High temperature dead head structure for sand casting |
| CN103894550A (en) * | 2014-02-21 | 2014-07-02 | 杭州元鼎船舶设备有限公司 | Integrated copper alloy propeller hub casting equipment and special method thereof |
| CN104226915A (en) * | 2014-09-26 | 2014-12-24 | 衡阳中钢衡重铸锻有限公司 | Casting method of hollow shaft and casting mold |
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