CN202725962U - Casting system for metal mold gravity casting aluminum piston - Google Patents
Casting system for metal mold gravity casting aluminum piston Download PDFInfo
- Publication number
- CN202725962U CN202725962U CN 201220363282 CN201220363282U CN202725962U CN 202725962 U CN202725962 U CN 202725962U CN 201220363282 CN201220363282 CN 201220363282 CN 201220363282 U CN201220363282 U CN 201220363282U CN 202725962 U CN202725962 U CN 202725962U
- Authority
- CN
- China
- Prior art keywords
- sprue
- ingate
- piston
- metal mold
- cross
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a casting system for a metal mold gravity casting aluminum piston. The casting system comprises a pouring cup, a sprue, a runner and an ingate, wherein the top end of the sprue is communicated with the outlet of the pouring cup, and the sprue extends along the vertical direction; the runner is communicated with the bottom end of the sprue, and the runner extends along a horizontal direction; the inlet of the ingate is communicated with the outlet of the runner, and the outlet of the ingate is communicated with the cavity of a piston mold; the cross section area of the sprue, the runner and the ingate is sequentially increased. As the minimum cross section area of the sprue, the runner and the ingate in the casting system is sequentially increased, the gate ratio of the sprue, the runner and the ingate is strictly controlled, and the casting system becomes an open casting system. The mold-filling speed of molten metal at the outlet of the ingate is fully reduced, the mold-filling process is stable, and the casting quality of an aluminum piston blank can be stabilized. The pinhole, slag inclusion and shrinkage porosity defects of the piston blank are reduced, and therefore the process yield of the piston blank is increased.
Description
Technical field
The utility model relates to metal mold gravity casting aluminum piston blank technical field, more particularly, relates to a kind of metal mold gravity casting aluminium piston casting system.
Background technology
At present, the aluminum alloy metal-type gravitational casting is still adopted in the piston blank production of engine piston manufacturing enterprise, and gravitational casting refers to that molten metal injects the technique of casting mold under Action of Gravity Field, the power of also weighing casting.
Casting system is the passage that liquid metal flows into mold cavity in the gravitational casting, and it directly affects the casting quality.Existing aluminium piston casting system mainly is comprised of structures such as cup, sprue, cross gate, ingates, above-mentioned each running channel is watering the not strict control of road shape and running channel ratio, random large, can not guarantee the stable filling type of molten metal, therefore can cause that the casting quality is unstable, randomness is large, the defectives such as pin hole, slag inclusion, shrinkage porosite appear in piston blank often that cause casting, seriously reduce the product yield of piston blank.
The running channel ratio refers to the cross-sectional area ratio of sprue, cross gate and ingate.
In sum, how providing a kind of metal mold gravity casting aluminium piston casting system, to stablize the casting quality of aluminum piston blank, improve the product yield of piston blank, is the technical problem that present those skilled in the art need to be resolved hurrily.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of metal mold gravity casting aluminium piston casting system, to stablize the casting quality of aluminum piston blank, improves the product yield of piston blank.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of metal mold gravity casting aluminium piston casting system comprises:
Cup;
The sprue that the top is connected with the outlet of described cup, described sprue vertically extends;
With the cross gate that the bottom of described sprue is connected, described cross gate along continuous straight runs extends; With
Entrance is connected with the outlet of described cross gate, the ingate that outlet is connected with the die cavity of Piston mould; Wherein,
The cross-sectional area of described sprue, described cross gate and described ingate increases successively, and described cross-sectional area refers to the cross-sectional area vertical with the liquid flow path direction.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, and the size of the cross-sectional area of described sprue, described cross gate and described ingate is 1:1.8:2.
Preferably, above-mentioned metal mold gravity casting aluminium piston also comprises the insulated feeder that is arranged on described Piston mould top with in the casting system.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, and the porch of described cup is the infundibulate of a side flaring.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, and the axis of described sprue becomes 2 ° of-4 ° of angles with the axis of described Piston mould.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, described sprue and described cross gate are variable section runner, and described sprue is dwindled gradually by the cross-sectional area of entrance to outlet, and described cross gate becomes large gradually by entrance to the cross-sectional area that exports; Described ingate is the uiform section runner.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, and the shape of cross section of described sprue is trapezoidal.
Preferably, above-mentioned metal mold gravity casting aluminium piston also comprises screen pack with in the casting system, and described screen pack is arranged on the porch of described cross gate.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, and described screen pack is the alumina silicate fibre mesh grid.
Preferably, above-mentioned metal mold gravity casting aluminium piston is with in the casting system, and the bottom of described ingate is higher than the bottom of described Piston mould, and the distance between the bottom of the bottom of described ingate and described Piston mould is no more than 10mm.
Can find out from above-mentioned technical scheme, the sprue of the metal mold gravity casting aluminium piston that the utility model provides in the casting system, the cross-sectional area of cross gate and ingate increases successively, it is to sprue, the running channel ratio of cross gate and ingate has carried out strict control, make above-mentioned casting system become an open casting system, fully reduced the filling velocity of molten metal in the ingate exit, make cavity filling process steady, can stablize the casting quality of aluminum piston blank, reduced the generation of volume gas slag, reduced the pin hole of piston blank, slag inclusion, the defectives such as shrinkage porosite, thus the product yield of piston blank improved.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the metal mold gravity casting aluminium piston that provides of the utility model embodiment with the structural representation of casting system;
Fig. 2 is the structural representation of the cup that provides of the utility model embodiment;
Fig. 3 is the cross-sectional structure schematic diagram of the sprue that provides of the utility model embodiment.
The specific embodiment
The utility model embodiment provides a kind of metal mold gravity casting aluminium piston casting system, can stablize the casting quality of aluminum piston blank, has improved the product yield of piston blank.
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to accompanying drawing 1, the metal mold gravity casting aluminium piston casting system that the utility model embodiment provides comprises cup 1, sprue 2, cross gate 3 and ingate 4; Wherein, sprue 2 vertically extends and its top is connected with the outlet of cup 1; Cross gate 3 along continuous straight runs extend and its bottom with sprue 2 is connected; The entrance of ingate 4 is connected with the outlet of cross gate 3, and outlet is connected with the die cavity of Piston mould 5; And sprue 2, cross gate 3 increase successively with the cross-sectional area of ingate 4, and above-mentioned cross-sectional area refers to the cross-sectional area vertical with the liquid flow path direction.
Above-mentioned cup 1 is the entrance that molten metal enters die cavity, molten metal is makes the aluminium liquid that the aluminium piston is used, and molten metal injects then flow through successively sprue 2 and cross gate 3 from cup 1, enter in the ingate 4, then enter in the die cavity of Piston mould 5 and fill type.In the process of above-mentioned casting, the effect of sprue 2 is that molten metal is introduced cross gate 3 and provided mold filling pressure for the type that fills of gravitational casting; Cross gate 3 is the parts that connect sprue 2 and ingate 4, and it can be in sprue 2 bottoms buffering molten metal speed, and change metal liquid stream to, make molten metal mild flow into die cavities through ingate 4; Ingate 4 is passages that molten metal enters die cavity.
Because the sprue 2 of the metal mold gravity casting aluminium piston that the utility model embodiment provides in the casting system, cross gate 3 increases successively with the cross-sectional area of ingate 4, it is to sprue 2, cross gate 3 has carried out strict control with the running channel ratio of ingate 4, make above-mentioned casting system become an open casting system, fully reduced the filling velocity of molten metal in ingate 4 exits, make cavity filling process steady, can stablize the casting quality of aluminum piston blank, reduced the generation of volume gas slag, reduced the pin hole of piston blank, slag inclusion, the defectives such as shrinkage porosite, thus the product yield of piston blank improved.
Preferably, the metal mold gravity casting aluminium piston that above-described embodiment provides is with in the casting system, and sprue 2, cross gate 3 are 1:1.8:2 with the size of the cross-sectional area of ingate 4.The aforementioned proportion value is the running channel ratio of casting system, and through production practices for many years, adopting running channel ratio 1:1.8:2 is comparative optimization, and can farthest stablize the casting quality of aluminum piston blank this moment, improves the product yield of piston blank.Certain above-mentioned running channel ratio is not limited to above-mentioned concrete numerical value, can select suitable running channel ratio according to the piston blank of casting different size size, and the present embodiment is not done restriction.
Further, the metal mold gravity casting aluminium piston that above-described embodiment provides also comprises the insulated feeder 6 that is arranged on Piston mould 5 tops with in the casting system.In casting mold, the die cavity of rising head is the cavity of storage liquid metal, because the rising head cooling is the slowest, the shrinkage cavity that causes because of feeding and autogenous shrinkage will only be created in the rising head, so rising head can be when casting solidification the supply molten metal, effectively prevent shrinkage cavity and porosity, and play the effect of exhaust and collection slag.Insulated feeder is exactly that all lower insulation material---muffs of one deck thermal conductivity factor and density are set in the side of rising head, to prolong the setting time of rising head, improves the feeding effect of rising head.
Please refer to accompanying drawing 2, the metal mold gravity casting aluminium piston that above-described embodiment provides is with in the casting system, and the porch of cup 1 is the infundibulate of a side flaring.At this moment, the opposite side of cup 1 vertically extends, and it can guide wire liquid flows into along sprue 2 inwalls, rather than towards or clashing into sprue 2 inwalls and flowing into, reduced the generation of diffusing and slag.The porch of above-mentioned cup 1 also can be the funnel shaped opening of the equal flaring in both sides, can also be plate-like opening or other opening shapes that can meet the demands.
In order further to optimize technique scheme, the metal mold gravity casting aluminium piston that above-described embodiment provides is with in the casting system, and the axis of sprue 2 becomes 2 ° of-4 ° of angles with the axis of Piston mould 5.This moment, sprue was obliquely installed, so that the liquid levellings in the sprue 2 are slow during casting of molten metal, cavity filling process is steady.Sprue 2 according to different length can also be selected different angles of inclination.
Preferably, sprue 2 and cross gate 3 are variable section runner, and sprue 2 is dwindled gradually by the cross-sectional area of entrance to outlet, and cross gate 3 becomes large gradually by entrance to the cross-sectional area that exports; Ingate 4 is the uiform section runner.Finally, the cross-sectional area that makes sprue 2 outlet at bottom places have whole casting system minimum, thus highly control the casting cycle filling time in conjunction with sprue 2.
At this moment, the cross-sectional area everywhere of sprue 2 and cross gate 3 each runner does not allow unexpected expansion or dwindles phenomenon, to reduce the generation of eddy current.In addition, sprue 2 and cross gate 3 cross-sectional areas also can roughly remain unchanged.
Because circular cross section easily produces whirlpool, produce whirlpool when filling type in order to reduce casting system, the shape of cross section of above-mentioned sprue 2 is preferably trapezoidal, as shown in Figure 3.The shape of cross section of sprue 2 can also be polygon, ellipse or other non-circular shapes.
In order to reduce the slag inclusion waste product, the metal mold gravity casting aluminium piston that above-described embodiment provides also comprises screen pack 7 with in the casting system, and screen pack 7 is arranged on the porch of cross gate 3, i.e. an end of close sprue 2.Screen pack 7 can reduce the filling velocity of molten metal and stop field trash to enter foundry goods inside; Screen pack 7 is arranged on cross gate 3 interior ends near sprue 2, can after dropping to sprue 2 exits, molten metal control the division of metal liquid stream, and polymer/metallic liquid flows again, then make metal liquid stream enter cross gate 3 with enough slow and compact state, owing to producing the molten metal surface tension when molten metal passes screen pack 7 mesh, and the inhibition of the frictional force between screen pack 7 and the molten metal, blocked molten metal flowing in sprue 2 bottoms, be conducive to sprue 2 and just be full of fully at the cavity filling process commitment, therefore can reduce volume gas.
It will be appreciated by persons skilled in the art that screen pack 7 can also be arranged on the top of sprue 2 or other positions in the cross gate 3.
Concrete, screen pack 7 is the alumina silicate fibre mesh grid.Above-mentioned screen pack 7 can also select stainless steel screen pack or other to be applicable to the screen pack type of casting metals liquid.
In order to make molten metal flow into cavity bottom, the metal mold gravity casting aluminium piston that above-described embodiment provides is with in the casting system, the bottom of ingate 4 is higher than the bottom of Piston mould 5, produce for fear of molten metal simultaneously and significantly splash, distance between the bottom of the bottom of ingate 4 and Piston mould 5 is no more than 10mm, this moment, ingate 4 interior molten metals just can rely on gravity to be full of gently die cavity, obtained the second best in quality foundry goods.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. metal mold gravity casting aluminium piston casting system comprises:
Cup (1);
The sprue (2) that the top is connected with the outlet of described cup (1), described sprue (2) vertically extends;
With the cross gate (3) that the bottom of described sprue (2) is connected, described cross gate (3) along continuous straight runs extends; With
Entrance is connected with the outlet of described cross gate (3), the ingate (4) that outlet is connected with the die cavity of Piston mould (5);
It is characterized in that, described sprue (2), described cross gate (3) increase successively with the cross-sectional area of described ingate (4), and described cross-sectional area refers to the cross-sectional area vertical with the liquid flow path direction.
2. metal mold gravity casting aluminium piston casting system according to claim 1 is characterized in that, described sprue (2), described cross gate (3) are 1:1.8:2 with the size of the cross-sectional area of described ingate (4).
3. metal mold gravity casting aluminium piston casting system according to claim 1 is characterized in that, also comprises the insulated feeder (6) that is arranged on described Piston mould (5) top.
4. metal mold gravity casting aluminium piston casting system according to claim 3 is characterized in that, the porch of described cup (1) is the infundibulate of a side flaring.
5. metal mold gravity casting aluminium piston casting system according to claim 4 is characterized in that, the axis of described sprue (2) becomes 2 ° of-4 ° of angles with the axis of described Piston mould (5).
6. metal mold gravity casting aluminium piston casting system according to claim 1, it is characterized in that, described sprue (2) and described cross gate (3) are variable section runner, described sprue (2) is dwindled gradually by the cross-sectional area of entrance to outlet, and described cross gate (3) becomes large gradually by entrance to the cross-sectional area that exports;
Described ingate (4) is the uiform section runner.
7. metal mold gravity casting aluminium piston casting system according to claim 6 is characterized in that, the shape of cross section of described sprue (2) is trapezoidal.
8. metal mold gravity casting aluminium piston casting system according to claim 1 is characterized in that, also comprise screen pack (7), described screen pack (7) is arranged on the porch of described cross gate (3).
9. metal mold gravity casting aluminium piston casting system according to claim 8 is characterized in that, described screen pack (7) is the alumina silicate fibre mesh grid.
10. the described metal mold gravity casting aluminium of any one piston casting system according to claim 1-9, it is characterized in that, the bottom of described ingate (4) is higher than the bottom of described Piston mould (5), and the distance between the bottom of the bottom of described ingate (4) and described Piston mould (5) is no more than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363282 CN202725962U (en) | 2012-07-25 | 2012-07-25 | Casting system for metal mold gravity casting aluminum piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363282 CN202725962U (en) | 2012-07-25 | 2012-07-25 | Casting system for metal mold gravity casting aluminum piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202725962U true CN202725962U (en) | 2013-02-13 |
Family
ID=47651712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220363282 Expired - Lifetime CN202725962U (en) | 2012-07-25 | 2012-07-25 | Casting system for metal mold gravity casting aluminum piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202725962U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744370A (en) * | 2012-07-25 | 2012-10-24 | 湖南江滨机器（集团）有限责任公司 | Pouring system for permanent mold gravity casting aluminum piston |
| CN103639369A (en) * | 2013-12-25 | 2014-03-19 | 湖南江滨机器（集团）有限责任公司 | Piston casting method and mould |
| CN104815964A (en) * | 2015-04-30 | 2015-08-05 | 共享装备有限公司 | Gating system capable of solving inner runner inflow unevenness |
| CN106077493A (en) * | 2016-08-25 | 2016-11-09 | 四川南车共享铸造有限公司 | A kind of running gate system for casting diesel-engine body foundry goods |
-
2012
- 2012-07-25 CN CN 201220363282 patent/CN202725962U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744370A (en) * | 2012-07-25 | 2012-10-24 | 湖南江滨机器（集团）有限责任公司 | Pouring system for permanent mold gravity casting aluminum piston |
| CN103639369A (en) * | 2013-12-25 | 2014-03-19 | 湖南江滨机器（集团）有限责任公司 | Piston casting method and mould |
| CN103639369B (en) * | 2013-12-25 | 2016-01-20 | 湖南江滨机器（集团）有限责任公司 | A kind of method for casting piston and casting for piston mould |
| CN104815964A (en) * | 2015-04-30 | 2015-08-05 | 共享装备有限公司 | Gating system capable of solving inner runner inflow unevenness |
| CN106077493A (en) * | 2016-08-25 | 2016-11-09 | 四川南车共享铸造有限公司 | A kind of running gate system for casting diesel-engine body foundry goods |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102744370A (en) | Pouring system for permanent mold gravity casting aluminum piston | |
| CN202725962U (en) | Casting system for metal mold gravity casting aluminum piston | |
| CN204770470U (en) | Cast aluminium motor end cover gravity casting mould for motor car | |
| CN101733386A (en) | Die cast mould gating system | |
| CN102319891A (en) | Gating system capable of effectively controlling air entrainment and slag entrainment and design method thereof | |
| CN105081219B (en) | A kind of anti-lift-type evaporative pattern running gate system | |
| CN204603217U (en) | A kind of composite casting system | |
| CN202070720U (en) | Bottom gating system | |
| CN104084558A (en) | Gating system of ultra-thin metal shell | |
| CN101966560B (en) | Bottom casting system of strip sectional inner runners | |
| CN101966559B (en) | Bottom casting system of ingate of circular cross section | |
| CN105598386A (en) | Lid mold structure with grill and diversion control device | |
| CN203076531U (en) | Large thick-walled casting pouring system and casting mould | |
| CN203764889U (en) | Progressive solidification forming die for high-speed rail sleeper beam castings | |
| CN103801659B (en) | A kind of running gate system for aluminium alloy sleeper beam foundry goods | |
| CN203170942U (en) | Lampshade body die-casting die | |
| CN203356531U (en) | Forming die for engine cylinder head | |
| CN205085369U (en) | On -vehicle block of four safety tape spool core die casting die | |
| CN201815628U (en) | Bottom gating system with ingates in strip-shaped cross sections | |
| CN103182499A (en) | Lampshade body pressure-casting mould | |
| CN201815626U (en) | Bottom pouring gating system with annular cross-sectioned ingate | |
| CN102974798A (en) | Automobile filter die-casting die system | |
| CN201603853U (en) | Quadripuntal submersed nozzle used for pouring conventional plate blank and preventing molten steel turbulence | |
| CN203209685U (en) | Quasi-four-hole immersed nozzle for FTSC thin slab continuous casting crystallizer | |
| CN202021338U (en) | Low pressure casting mold producing two products with one mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |