CN207494535U - Magnesium alloy differential low voltage casting device - Google Patents
Magnesium alloy differential low voltage casting device Download PDFInfo
- Publication number
- CN207494535U CN207494535U CN201721637450.7U CN201721637450U CN207494535U CN 207494535 U CN207494535 U CN 207494535U CN 201721637450 U CN201721637450 U CN 201721637450U CN 207494535 U CN207494535 U CN 207494535U
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- China
- Prior art keywords
- stalk
- casting
- ingate
- movable block
- cavity
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Abstract
The utility model discloses a kind of magnesium alloy differential low voltage casting devices, including upper molding sand, Sand and lower molding sand, casting cavity is equipped in Sand, the upper ingate with being connected at the top of casting cavity is equipped in upper molding sand, the lower ingate being connected with casting cavity bottom is equipped in lower molding sand, core is equipped with along casting mold cavity axis, core center is equipped with the transition running channel of the upper ingate of connection and lower ingate, the lower section of lower molding sand is equipped with positioning mould board, the center of positioning mould board is equipped with cast gate, cast gate is connected upwardly through sprue with the center of lower ingate, the lower section of positioning mould board is equipped with the stalk with cast gate coaxial line, the top of stalk is equipped with stalk flange, the top center of stalk flange is equipped with annular recess；The inner cavity of stalk is nested with the woven hose with stalk coaxial line, and the top of woven hose is equipped with infusion pipe flange, infusion pipe flange be embedded in in the annular recess of stalk flange.The alloy flow velocity in stalk can be changed in the device, and slagging-off effect is good.
Description
Technical field
The utility model is related to a kind of casting device more particularly to a kind of magnesium alloy differential low voltage casting devices, belong to
Low-pressure casting equipment technical field.
Background technology
The density of magnesium alloy is small, and molten volumetric heat capacity is small and thermal conductivity is big, causes aluminium alloy temperature in flow process rapid
It reduces, easily oxidation and air-breathing, and the proportion of oxide and alloy in lightweight liquid phase are near, make to be mixed into the oxide in aluminium alloy and are difficult to
It excludes, volume contraction is big after aluminium alloy solidification, easy the defects of generating shrinkage cavity and porosity or slag inclusion.
Low pressure casting is the casting method between gravitational casting and compression casting, it is to utilize gas pressure by metal
Hydraulic pressure enters casting mold, and makes a kind of casting method of casting crystallization and freezing under a certain pressure, is usually used in casting gravity-assist pouring and is difficult to
Molding thin-wall complicated casting.The technical process of low pressure casting is as follows：Dry compressed air is passed through in closed holding furnace,
Molten metal in holding furnace rises under gas pressure along stalk, enters cavity by cast gate, keeps heat preservation furnace gas
Pressure is until the molten metal solidification completely in cavity forms casting.Then heat preservation furnace pressure is released, makes not solidify in stalk
Molten metal flow back to holding furnace, then release pressing device pressure at the top of casting mold, take out casting.
The planform of casting is different, often because of the needs of the requirements such as structure, assembling, load bearing support, by product design
Differ into thickness so that problem increases the defects of casting, and magnesium alloy because it is light-weight, mechanical property is good, frequently results in designer
Favor, but because the chemical property of itself is active, poor fluidity, low density, it is oxidizable the defects of influence, often yield rate
It is relatively low, technology difficulty is big.
Since stalk is straight tube, section shape and size remains unchanged existing low-pressure casting device, it is impossible to which satisfaction is poured
Note rises the effect of current stabilization skimming during liquid, and aluminium alloy is easily made to generate the bad phenomenons such as flow fluctuation, volume gas；And once occur
Frozen pipe, then whole to need to change, service life shortens, and increases cost of manufacture.
Utility model content
The purpose of this utility model is that overcoming problems of the prior art, it is low to provide a kind of magnesium alloy differential pressure type
Casting device is pressed, the alloy flow velocity in stalk can be changed as needed, slagging-off effect is good.
For solution more than technical problem, a kind of magnesium alloy differential low voltage casting device of the utility model, including mutual
Upper molding sand, Sand and the lower molding sand of docking are equipped with casting cavity in the Sand, are equipped in the upper molding sand and casting type
The upper ingate that top of chamber is connected is equipped with the lower ingate being connected with casting cavity bottom in the lower molding sand, along the casting
The axis of cavity is equipped with core, and the center of the core is equipped with the transition running channel of the upper ingate of connection and lower ingate, under described
The lower section of molding sand is equipped with positioning mould board, and the center of the positioning mould board is equipped with cast gate, and the cast gate is upwardly through sprue and institute
The center for stating lower ingate is connected, and the lower section of the positioning mould board is equipped with the stalk with cast gate coaxial line, the stalk
Top is equipped with the stalk flange turned down outward, and the top center of the stalk flange is equipped with annular recess；The stalk
Inner cavity be nested with woven hose with stalk coaxial line, the top of the woven hose is equipped with the infusion pipe flange turned down outward,
It is described infusion pipe flange be embedded in in the annular recess of the stalk flange.
Relative to the prior art, the utility model achieves following advantageous effect：Molten metal is in heat preservation furnace inner gas pressure
It is lower to rise along stalk, enter lower ingate, then enter casting cavity from lower ingate from cast gate, keep the gas in holding furnace
Pressure is until the molten metal solidification completely in cavity forms casting.Be cased with woven hose due to being embedded in stalk, be conveniently replaceable or
Combination so that stalk inner section shape can arbitrarily change, strong modularity；Utilize the inner-cavity structure transformation control alloy of woven hose
The flow velocity of liquid is allowed to not generate turbulent flow, and realize skimming；Liquid metal filling is steady, the defects of can reducing oxide slag inclusion, casting
It solidifies under stress, dense structure's high mechanical properties.When frozen pipe occurs for stalk, without integral replacing.
As the improvement of the utility model, the woven hose be screwed on successively by movable block one to movable block five from bottom to top and
Smoothly transit connection into, the movable block one to five coaxial line of movable block and inner cavity, the inner cavity of the movable block one for it is upper it is small under
Big cone, the inner cavity of the movable block two are up big and down small cone, the inner cavity of the movable block three to be cylindrical and
Top is equipped with up big and down small arc transition section, and the inner cavity of the movable block four is cylinder, and the inner cavity of the movable block five is
Up-small and down-big cone.Each movable block is connected through a screw thread, and can independently be replaced, to adapt to the need of the weight of casting and structure
Will, aluminium alloy is from bottom to top in flow process by three phases, and the first stage is the drainage stage, eight words of one inner cavity of movable block
Shape necking can control aluminium alloy not turbulent, and skimming is carried out using splayed shape.Second stage is transition stage, and aluminium alloy is successively
Movable block two and movable block three are flowed through, intracavity section tentatively amplifies, and flow velocity reduces, can using the arc transition of three oral area of movable block
To avoid aluminium alloy volume gas here.Phase III is the final cast stage, and aluminium alloy is followed by movable block four and movable block
Five, flow velocity further reduces in movable block four, and the oral area of movable block five forms effect and the control of secondary skimming into splayed
Flow velocity.
As the improvement of the utility model, the total sectional area that the lower ingate is connected with casting cavity is interior more than described
The total sectional area that running channel is connected with casting cavity.The quantity that upper ingate is connected with casting cavity is less than lower ingate and casting type
The quantity that chamber is connected, according to pressure be equal to pressure be multiplied by the principle of area, upper ingate and lower ingate in the supercharging of cast and
Packing stage forms pressure difference, casting can consecutive solidification from top to bottom, ensure the consistency of product.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description, attached drawing only provides ginseng
It examines and illustrates to use, it is non-limiting the utility model.
Fig. 1 is the front view of the utility model magnesium alloy differential low voltage casting device.
Fig. 2 is the enlarged drawing at stalk position in Fig. 1.
Fig. 3 is the structure diagram of stalk in Fig. 1.
Fig. 4 is the structure diagram of woven hose in Fig. 1.
In figure：Molding sand on 1.；2. Sand；3. lower molding sand；Ingate on 4.；5. casting cavity；6. core；7. it is poured in lower
Road；8. transition running channel；9. sprue；10. positioning mould board；10a. cast gates；11. stalk；11a. stalk flanges；11b. is cyclic annular
Groove；12. woven hose；12a. movable blocks one；12b. movable blocks two；12c. movable blocks three；12d. movable blocks four；12e. movable blocks
Five；12f. infusion pipe flanges.
Specific embodiment
As shown in Figures 1 to 4, the magnesium alloy differential low voltage casting device of the utility model includes the mo(u)ld top half being mutually butted
Sand 1, Sand 2 and lower molding sand 3 are equipped with casting cavity 5 in Sand 2, are equipped in upper molding sand 1 and are connected with 5 top of casting cavity
Upper ingate 4, the lower ingate 7 being connected with 5 bottom of casting cavity is equipped in lower molding sand 3, is equipped with along the axis of casting cavity 5
Core 6, the center of core 6 are equipped with the transition running channel 8 of the upper ingate 4 of connection and lower ingate 7, and the lower section of lower molding sand 3, which is equipped with, determines
Bit-type plate 10, the center of positioning mould board 10 are equipped with cast gate 10a, and cast gate 10a is upwardly through the center of sprue 9 and lower ingate 7
It is connected, the lower section of positioning mould board 10 is equipped with the stalk 11 with cast gate 10a coaxial lines, and the top of stalk 11 is equipped with fold outward
Stalk flange 11a, the top center of stalk flange 11a is equipped with annular recess 11b；The inner cavity of stalk 11 be nested with
The woven hose 12 of 11 coaxial line of stalk, the top of woven hose 12 are equipped with the infusion pipe flange 12f turned down outward, pipe flange of infusing
12f be embedded in in the annular recess 11b of stalk flange 11a.
Molten metal rises in the case where keeping the temperature furnace inner gas pressure along stalk 11, from cast gate 10a into lower ingate 7, then from
Lower ingate 7 enters casting cavity 5, keeps the gas pressure in holding furnace until the molten metal in cavity solidifies to form casting completely
Part.Woven hose 12 is cased with due to being embedded in stalk 11, is conveniently replaceable or combines so that 11 inner section shape of stalk can be random
Change, strong modularity；Using the flow velocity of the inner-cavity structure transformation control aluminium alloy of woven hose 12, it is allowed to not generate turbulent flow, and
Realize skimming；Liquid metal filling is steady, the defects of can reducing oxide slag inclusion, and casting solidifies under stress, dense structure's mechanical property
It can be high.When frozen pipe occurs for stalk 11, woven hose 12 can individually be replaced.
Woven hose 12 is screwed on successively by one 12a of movable block to five 12e of movable block from bottom to top, and one 12a of movable block is extremely
Five 12e coaxial lines of movable block and inner cavity smoothly transit connection, and the inner cavity of one 12a of movable block is up-small and down-big cone, activity
The inner cavity of two 12b of block is up big and down small cone, and the inner cavity of three 12c of movable block is equipped with up big and down small for cylindrical and top
Arc transition section, the inner cavity of four 12d of movable block is cylinder, and the inner cavity of five 12e of movable block is up-small and down-big cone.Each work
Motion block is connected through a screw thread, and can independently be replaced, to adapt to the needs of the weight of casting and structure.
The runner of 12 inner cavity wine pot shape of woven hose can be very good the flow velocity of control aluminium alloy and play skimming effect.It closes
Golden liquid is from bottom to top in flow process by three phases, and the first stage is the drainage stage, the splayed of one 12a inner cavities of movable block
Necking can control aluminium alloy not turbulent, and skimming is carried out using splayed shape.Second stage is transition stage, and aluminium alloy flows successively
Through three 12c of two 12b of movable block and movable block, intracavity section tentatively amplifies, and flow velocity reduces, and utilizes the circle of three 12c oral areas of movable block
Arc transition can be to avoid aluminium alloy volume gas here.Phase III is the final cast stage, and aluminium alloy is followed by movable block four
Five 12e of 12d and movable block, flow velocity further reduces in four 12d of movable block, and the oral area of five 12e of movable block is formed into splayed
The effect and coutroi velocity of secondary skimming.
The total sectional area that lower ingate 7 is connected with casting cavity 5 is more than total section that upper ingate 4 is connected with casting cavity 5
Area.The quantity that upper ingate 4 is connected with casting cavity 5 is less than the quantity that lower ingate 7 is connected with casting cavity 5, according to pressure
Power is equal to the principle that pressure is multiplied by area, upper ingate 4 and lower ingate 7 and forms pressure difference in the supercharging of cast and packing stage,
Casting can consecutive solidification from top to bottom, ensure the consistency of product.
The foregoing is merely the preferable possible embodiments of the utility model, non-therefore limitation the utility model patent
Protection domain.In addition to the implementation, the utility model can also have other embodiment.It is all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, is all fallen in the protection domain of the requires of the utility model.
Claims (3)
1. a kind of magnesium alloy differential low voltage casting device, including the upper molding sand, Sand and lower molding sand being mutually butted, in described
Casting cavity is equipped in molding sand, is equipped with the upper ingate with being connected at the top of casting cavity in the upper molding sand, in the lower molding sand
Equipped with the lower ingate being connected with casting cavity bottom, core, the center of the core are equipped with along the axis of the casting cavity
Transition running channel equipped with the upper ingate of connection and lower ingate, the lower section of the lower molding sand are equipped with positioning mould board, the location type
The center of plate is equipped with cast gate, and the cast gate is connected upwardly through sprue with the center of the lower ingate, the positioning mould board
Lower section be equipped with stalk with cast gate coaxial line, it is characterized in that：The top of the stalk is equipped with the stalk turned down outward
Flange, the top center of the stalk flange are equipped with annular recess；The inner cavity of the stalk is nested with coaxial with stalk
The woven hose of line, the top of the woven hose are equipped with the infusion pipe flange turned down outward, the infusion pipe flange be embedded in it is described
In the annular recess of stalk flange.
2. magnesium alloy differential low voltage casting device according to claim 1, it is characterized in that, the woven hose is from bottom to top
It is screwed on successively by movable block one to movable block five, the movable block one to five coaxial line of movable block and inner cavity smoothly transit company
It connecing, the inner cavity of the movable block one is up-small and down-big cone, and the inner cavity of the movable block two is up big and down small cone,
The inner cavity of the movable block three is equipped with up big and down small arc transition section for cylindrical and top, and the inner cavity of the movable block four is
Cylinder, the inner cavity of the movable block five is up-small and down-big cone.
3. magnesium alloy differential low voltage casting device according to claim 1, it is characterized in that, the lower ingate and casting
The total sectional area that cavity is connected is more than the total sectional area that the upper ingate is connected with casting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721637450.7U CN207494535U (en) | 2017-11-30 | 2017-11-30 | Magnesium alloy differential low voltage casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721637450.7U CN207494535U (en) | 2017-11-30 | 2017-11-30 | Magnesium alloy differential low voltage casting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207494535U true CN207494535U (en) | 2018-06-15 |
Family
ID=62507121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721637450.7U Expired - Fee Related CN207494535U (en) | 2017-11-30 | 2017-11-30 | Magnesium alloy differential low voltage casting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207494535U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799130A (en) * | 2022-04-08 | 2022-07-29 | 浙江万丰精密制造有限公司 | Composite liquid lifting pipe |
| CN116274952A (en) * | 2023-04-06 | 2023-06-23 | 连云港鑫旗铸造有限公司 | Anti-gravity pouring system for rotary casting and application method of anti-gravity pouring system |
-
2017
- 2017-11-30 CN CN201721637450.7U patent/CN207494535U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799130A (en) * | 2022-04-08 | 2022-07-29 | 浙江万丰精密制造有限公司 | Composite liquid lifting pipe |
| CN116274952A (en) * | 2023-04-06 | 2023-06-23 | 连云港鑫旗铸造有限公司 | Anti-gravity pouring system for rotary casting and application method of anti-gravity pouring system |
| CN116274952B (en) * | 2023-04-06 | 2023-09-26 | 连云港鑫旗铸造有限公司 | Anti-gravity pouring system for rotary casting and application method of anti-gravity pouring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 Termination date: 20201130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |