CN102029383A - Aluminum alloy wheel gravity casting die and casting method thereof - Google Patents
Aluminum alloy wheel gravity casting die and casting method thereof Download PDFInfo
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- CN102029383A CN102029383A CN 201010606373 CN201010606373A CN102029383A CN 102029383 A CN102029383 A CN 102029383A CN 201010606373 CN201010606373 CN 201010606373 CN 201010606373 A CN201010606373 A CN 201010606373A CN 102029383 A CN102029383 A CN 102029383A
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Abstract
The invention discloses an aluminum alloy wheel gravity casting die and a casting method thereof. The aluminum alloy wheel gravity casting die comprises a cooling device, a top die, a side die, a bottom die and a die cavity formed by the top die, the side die and the bottom die; the bottom die is provided with a sprue spreader; the aluminum alloy wheel gravity casting die also comprises a heat insulation cup communicated with the die cavity and capable of storing molten aluminum, a pressing device capable of enabling the molten aluminum stored in the heat insulation cup to be continuously injected into the die cavity, and a plugging device capable of stopping the molten aluminum stored in the heat insulation cup from flowing into the die cavity under the action of gravity; the heat insulation cup is arranged on a rack of a gravity casting machine, and the plugging device is arranged on the bottom die or the rack of the gravity casting machine; and the casting method for the aluminum alloy wheel gravity casting die comprises molten aluminum injection, pressing, continuous casting, filling, feeding, crystallization and solidification. The cast aluminum alloy wheel has the advantages of a few dead heads, high weight and yield, and good quality stability.
Description
Technical field:
The invention belongs to aluminum-alloy wheel manufacturing technology field, specifically is a kind of aluminum-alloy wheel gravity casting die and casting method thereof.
Background technology:
At present, the method for aluminum-alloy wheel manufacturing both at home and abroad has forging, extrusion casint, low pressure casting and gravitational casting etc., and low pressure casting and gravitational casting are the domestic casting method of generally using.
Wherein gravitational casting is meant that aluminium liquid injects the technology of die cavity under the terrestrial gravitation effect, according to the difference of aluminium liquid gate location, is divided into center cast, the cast of limit mould and two-sided module cast.Wherein the wheel blanks of center moulding by casting has the center dead head, goes up the wheel rim rising head; The wheel blanks of limit mould moulding by casting has limit dead head, center riser and last wheel rim rising head; The wheel blanks of two-sided module moulding by casting has center riser, goes up wheel rim rising head, two limit dead heads.The rising head of these three kinds of pouring type molded aluminum alloy wheels is too many, and the following process surplus is big, causes the weight yield rate of product low.In addition, these three kinds of pouring types all are by manually again and again being poured in die cavity from cast gate aluminium liquid, cavity filling process process artifact is more, the quality stability of molded aluminum alloy wheel is not good enough, not in place as artificial cast rhythm and filling velocity grasp, the leak rate of aluminum-alloy wheel is increased.
Summary of the invention:
The technical issues that need to address of the present invention are: provide that a kind of aluminum-alloy wheel rising head that casts out is few, weight yield rate height, aluminum-alloy wheel gravity casting die that quality stability is good.
Technical scheme of the present invention is: a kind of aluminum-alloy wheel gravity casting die, and it comprises cooling device, backform, the limit mould, bed die and by the formed mold cavity of backform, Bian Mo and bed die, described bed die is provided with the branch flow cone; Described aluminum-alloy wheel gravity casting die also comprises the thermos cup that is connected with mold cavity and can deposits aluminium liquid, can make the aluminium liquid that leaves in the thermos cup inject pressue device in the mold cavity continuously, can stop the aluminium liquid that leaves thermos cup in to flow to the block apparatus that cuts in the mold cavity under the gravity effect, described thermos cup is arranged on the backform, described pressue device is installed on the frame of Gravity casting machines, and described section block apparatus is installed on the bed die or is installed on the frame of Gravity casting machines.
Described thermos cup comprises insulation cup and insulation tube connector, the upper end of described insulation tube connector is connected with the port of export of insulation cup, the lower end of described insulation tube connector is connected with backform flange on being installed in backform, and the port of export of described insulation cup, insulation tube connector and backform flange form the aluminium liquid circulation passage that is connected with mold cavity.
Described insulation cup constitutes by the insulating lining that plays insulation effect with to the passive overcoat of insulating lining, also has been with the back boxing of protection against erosion effect in the described insulating lining.
Described insulation tube connector constitutes by the insulating tube that plays insulation effect with to the passive outer tube of insulating tube, and the upper end of described outer tube is connected with the overcoat of described insulation cup, and the lower end of described outer tube is connected with backform flange on being installed in backform.
Described pressue device comprises cylinder, the bowl cover that can match with the sealing of the cup-mouth end of described insulation cup and is arranged on air inlet pipe and blast pipe on the bowl cover, described cylinder is installed on the frame of Gravity casting machines, described bowl cover is connected with the piston rod of cylinder, be separately installed with air intake valve and drain tap on described air inlet pipe and the blast pipe, described air inlet pipe is connected with source of the gas.
Described cylinder is installed on the frame of Gravity casting machines and is meant, described frame is provided with threaded linkage section, be arranged with connecting plate on the described linkage section, described connecting plate is locked on the linkage section through screwing at the locking nut on the linkage section, and described cylinder is fixedly mounted on the connecting plate.
Described section block apparatus mainly is made of minute flow cone and first oil cylinder, flow cone was movably set on the bed die in described minute, described first oil cylinder is installed on the bed die, and flow cone was connected with the piston rod of first oil cylinder in described minute, and the conehead of described minute flow cone can paste and seal mutually with the port of export of aluminium liquid circulation passage.
Described section block apparatus comprises second oil cylinder that is fixedly mounted on the described connecting plate, is movably set in the blocked shot on the bowl cover, and described blocked shot is connected with the piston rod of second oil cylinder, and the bar head of described blocked shot can paste and seal mutually with the arrival end of aluminium liquid circulation passage.
The top of the last wheel rim die cavity of described mold cavity is that backform seals or the limit mould seals or backform and Bian Mo seal.
Adopt the aluminum-alloy wheel gravity casting die of above structure to have the following advantages: owing to be provided with thermos cup, pressue device and section block apparatus, like this under the effect of thermos cup and section block apparatus, after the required aluminium liquid of cast aluminum alloy wheel just can be treated all to join in the thermos cup, under the effect of gravity and pressue device, inject in the mold cavity automatically again, realize continuous pouring, fill type, feeding and crystallization and freezing, the last wheel rim of described like this backform and limit mold forming does not have rising head, that is to say that the top that need not wheel rim die cavity on the mold cavity of aluminum-alloy wheel gravity casting die of the present invention is provided with rising head, just can cast out the preferable aluminum-alloy wheel blank of quality stability.The rising head of casting the aluminum-alloy wheel that comes out like this is few, and the following process surplus is also few, thereby has effectively improved the weight yield rate of product.
Another technical problem that the present invention need solve is: the casting method that a kind of aluminum-alloy wheel gravity casting die is provided.
Another technical scheme of the present invention is: the casting method of aluminum-alloy wheel gravity casting die, and this method may further comprise the steps:
A, matched moulds;
B, utilization cut a block apparatus and block aluminium liquid circulation passage, stop the aluminium liquid that leaves in the thermos cup to flow to mold cavity under the gravity effect;
C, startup cylinder are opened bowl cover;
D, screen pack is placed on the aluminium liquid circulation passage;
Inject the needed aluminium liquid of cast aluminum alloy wheel in e, the past thermos cup;
F, startup cylinder cover bowl cover;
G, make and cut a block apparatus return, aluminium liquid circulation passage is opened, and the aluminium liquid that leaves in the thermos cup begins to flow to mold cavity under the gravity effect;
H, close exhaust valve, open the air inlet pipe valve, leave aluminium liquid continuous pouring under the effect of gravity and gas pressure in the thermos cup in, fill type, feeding and crystallization and freezing;
I, utilize the aluminium liquid in cooling device cooling aluminum-alloy wheel gravity casting die and the mold cavity, the moulding of aluminum-alloy wheel blank.
Description of drawings:
Fig. 1 is the sectional structure schematic diagram of the aluminum-alloy wheel gravity casting die of a kind of embodiment of the present invention.
Fig. 2 is the sectional structure schematic diagram of the aluminum-alloy wheel gravity casting die of another embodiment of the present invention.
Shown in the figure: 1, backform, 1.1, the backform flange, 2, the limit mould, 3, bed die, 4, mold cavity, 4.1, last wheel rim die cavity, 5, divide flow cone, 6, thermos cup, 6.1, the insulation cup, 6.11, insulating lining, 6.12, overcoat, 6.13, back boxing, 6.2, the insulation tube connector, 6.21, insulating tube, 6.22, outer tube, 7, cooling device, 8, bowl cover, 9, frame, 9.1, linkage section, 10, cylinder, 11, air inlet pipe, 12, blast pipe, 13, connecting plate, 14, locking nut, 15, first oil cylinder, 16, second oil cylinder, 17, blocked shot, 18, the blocked shot stop collar, 19, aluminium liquid circulation passage, 20, screen pack, 21, sealing ring.
The specific embodiment:
Below in conjunction with the drawings and specific embodiments, the present invention is described further, but the present invention not only is confined to following concrete embodiment.
Be illustrated in figure 1 as the sectional structure schematic diagram of the aluminum-alloy wheel gravity casting die of a kind of embodiment of the present invention.The aluminum-alloy wheel gravity casting die of present embodiment, it comprises cooling device 7, backform 1, limit mould 2, bed die 3 and by backform 1, limit mould 2 and bed die 3 formed mold cavities 4, described bed die 3 is provided with branch flow cone 5.Described aluminum-alloy wheel gravity casting die also comprises the thermos cup 6 that is connected with mold cavity 4 and can deposits aluminium liquid, can make the aluminium liquid that leave in the thermos cup 6 inject pressue device in the mold cavity 4 continuously, can stop the aluminium liquid that leaves thermos cup 6 in to flow to section block apparatus mold cavity 4 under the gravity effect.Described thermos cup 6 is arranged on the backform 1, and described pressue device is installed on the frame 9.1 of Gravity casting machines 9, and described section block apparatus is installed on the bed die 3 or is installed on the frame 9.. of Gravity casting machines 9.
Described thermos cup 6 comprises insulation cup 6.1 and insulation tube connector 6.2.The upper end of described insulation tube connector 6.2 is connected with the port of export of insulation cup 6.1, and the lower end of described insulation tube connector 6.2 is connected with backform flange 1.1 on being installed in backform 1.The port of export of described insulation cup 6.1, insulation tube connector 6.2 and backform flange 1.1 form the aluminium liquid circulation passage 19 that is connected with mold cavity 4.
Described insulation cup 6.1 constitutes by the insulating lining 6.11 that plays insulation effect with to insulating lining 6.11 passive overcoats 6.12, also has been with the back boxing 6.13 of protection against erosion effect in the described insulating lining 6.11.Wherein the general insulation materials such as alumina silicate or calcium silicates that adopt of insulating lining 6.11 are made, overcoat 6.12 is general adopt rigidity and intensity all preferably steel bushing, iron cover etc. make, back boxing 6.13 general iron sheets, the sheetmetals etc. of adopting are made.Under the gravity effect, flow to mold cavity 4 for ease of the aluminium liquid that leave in the insulation cup 6.1, low in the middle of described insulation cup 6.1 is provided with, high ramped bottom surface all around.
Described insulation tube connector 6.2 constitutes by the insulating tube 6.21 that plays insulation effect with to insulating tube 6.21 passive outer tubes 6.22.The upper end of described outer tube 6.22 is connected with the overcoat 6.12 of described insulation cup 6.1, and the lower end of described outer tube 6.22 is connected with backform flange 1.1 on being installed in backform 1.The described insulating tube 6.21 general insulation materials such as alumina silicate or calcium silicates that adopt are made, and all steel bushing, iron cover etc. are made preferably for outer tube 6.22 general employing rigidity and intensity.
Described pressue device comprises cylinder 10 (can certainly adopt oil cylinder), the bowl cover 8 that can match with the sealing of the cup-mouth end of described insulation cup 6.1 and is arranged on air inlet pipe 11 and blast pipe 12 on the bowl cover 8.Described cylinder 10 is installed on the frame 9.1 of Gravity casting machines 9, and described bowl cover 8 is connected with the piston rod of cylinder 10.Be separately installed with air intake valve (not shown) and drain tap (not shown) on described air inlet pipe 11 and the blast pipe 12, described air inlet pipe 11 is connected with source of the gas.For realizing that the bowl cover 8 and the cup-mouth end sealing of insulation cup 6.1 match, be provided with the sealing ring 21 that seals between described bowl cover 8 and the described overcoat 6.12, sealing ring 21 is flush-mounted on the described overcoat 6.12, closes and can play sealing function to bowl cover 8 and thermos cup 6 when covering.
For the installation site of realizing cylinder 10 adjustable, described frame 9 is provided with threaded linkage section 9.1, be arranged with connecting plate 13 on the described linkage section 9.1, described connecting plate 13 is locked on the linkage section 9.1 through screwing at the locking nut on the linkage section 9.1 14, and described cylinder 10 is fixedly mounted on the connecting plate 13.When need regulating the setting height(from bottom) of cylinder 10 like this, the position of turn locking nut 14 up and down just can change the installation site of cylinder 10.
Described section block apparatus mainly is made of minute flow cone 5 and first oil cylinder 15 (can certainly adopt cylinder), flow cone 5 was movably set on the bed die 3 in described minute, described first oil cylinder 15 is installed on the bed die 3, flow cone 5 was connected with the piston rod of first oil cylinder 15 in described minute, and the conehead of described minute flow cone 5 can paste and seal mutually with the port of export of aluminium liquid circulation passage 19.For realizing dividing the conehead of flow cone 5 to paste mutually and to seal with the port of export of aluminium liquid circulation passage 19, the conical surface of the conehead of described minute flow cone 5 pastes mutually and seals with the inwall of the port of export of backform flange 1.1.Divide the conehead of flow cone 5 to paste mutually with the port of export of aluminium liquid circulation passage 19 and to seal for realizing in addition, flow cone 5 can also be provided with the step surface that pastes mutually and seal with the lower surface of backform flange 1.1 in the lower end of conehead in described minute.
For ease of the aluminium liquid that flows in the mold cavity 4 is filtered, described aluminium liquid circulation passage 19 is provided with screen pack 20, and this screen pack is taken the top of putting at insulating tube.
The last wheel rim die cavity 4 of described mold cavity 4.1 top is that backform seals or the limit mould seals or backform and Bian Mo seal, and wherein backform and Bian Mo seal and can be understood as backform and Bian Mo seals jointly.The last wheel rim that is to say described backform 1 and Bian Mo 2 moulding does not have rising head, is exactly that the top that need not wheel rim die cavity 4.1 on the mold cavity 4 of aluminum-alloy wheel gravity casting die of the present invention is provided with rising head in other words.
The casting method of the aluminum-alloy wheel gravity casting die of this embodiment mainly may further comprise the steps:
A, matched moulds, the backform that promptly closes earlier, limit mould again closes.
B, utilization cut a block apparatus and block aluminium liquid circulation passage, stop the aluminium liquid that leaves in the thermos cup under the gravity effect, to flow to mold cavity, promptly start first oil cylinder, promote to divide flow cone, the conehead of branch flow cone is stretched in the aluminium liquid circulation passage, make the conical surface of conehead paste mutually and seal or make the step surface of conehead and the lower surface of backform flange paste mutually and seal with the inwall of the port of export of backform flange.
C, startup cylinder are opened bowl cover.
D, screen pack is placed on the aluminium liquid circulation passage, is about to screen pack and takes the top of putting at insulating tube.
Inject the needed aluminium liquid of cast aluminum alloy wheel in e, the past thermos cup.
F, startup cylinder cover bowl cover.
G, make and cut a block apparatus return, aluminium liquid circulation passage is opened, and the aluminium liquid that leaves in the thermos cup begins to flow to mold cavity under the gravity effect, promptly start first oil cylinder, makes branch flow cone return.
H, close exhaust valve, open the air inlet pipe valve and inflate, leave aluminium liquid continuous pouring under the effect of gravity and gas pressure in the thermos cup in, fill type, feeding and crystallization and freezing.
Aluminium liquid in i, cooling aluminum-alloy wheel gravity casting die and the mold cavity, the moulding of aluminum-alloy wheel blank.
J, close the air inlet pipe valve, open exhaust valve and carry out exhaust.
K, startup cylinder are opened cover plate, and casting finishes.
L, die sinking discharging.
M, matched moulds start next casting circulation.
Be illustrated in figure 2 as the sectional structure schematic diagram of the aluminum-alloy wheel gravity casting die of another kind of embodiment of the present invention.Different with the foregoing description is, described section block apparatus comprises second oil cylinder 16 (can certainly adopt cylinder) that is fixedly mounted on the described connecting plate 13, is movably set in the blocked shot 17 on the bowl cover 8, and described blocked shot 17 is connected with the piston rod of second oil cylinder 16.The bar head of described blocked shot 17 can paste and seal mutually with the arrival end of aluminium liquid circulation passage 19.For the bar head of realizing described blocked shot 17 can paste and seal mutually with the arrival end of aluminium liquid circulation passage 19, the outer surface of the bar head of described blocked shot 17 pastes mutually and seals with the overcoat of described insulation cup 6.1.For making bowl cover 8 stressed relatively more balanced, the cylinder 10 in the present embodiment is two, is symmetrically distributed in the both sides of second oil cylinder 16.Equally, for ease of the aluminium liquid that flows in the mold cavity 4 is filtered, also be provided with screen pack 20 on the described aluminium liquid circulation passage 19, this screen pack 20 is placed on the branch flow cone 5, and the upper end of this screen pack 20 is set in the aluminium liquid circulation passage 19.On the described in addition bowl cover 8 blocked shot stop collar 18 is installed also, is used to limit the stroke that blocked shot 17 moves upward.Certainly, the branch flow cone 5 of the aluminum-alloy wheel gravity casting die of present embodiment is that fixed cover is located on the bed die 3, plays shunting action of the prior art.
The casting method of the aluminum-alloy wheel gravity casting die of another kind of embodiment of the present invention as shown in Figure 2 mainly may further comprise the steps:
A, matched moulds, the backform that promptly closes earlier, limit mould again closes.
B, utilization cut a block apparatus and block aluminium liquid circulation passage, stop the aluminium liquid that leaves in the thermos cup under the gravity effect, to flow to mold cavity, promptly start second oil cylinder, blocked shot is moved downward, the bar head of blocked shot is stretched in the aluminium liquid circulation passage, make the outer surface of the bar head of blocked shot paste mutually and seal with the overcoat of insulation cup.
C, startup cylinder are opened bowl cover.
D, screen pack is placed on the aluminium liquid circulation passage, is about to screen pack and is placed on the branch flow cone, the upper end of screen pack is set in the aluminium liquid circulation passage.
Inject the needed aluminium liquid of cast aluminum alloy wheel in e, the past thermos cup.
F, startup cylinder cover bowl cover.
G, make and cut a block apparatus return, aluminium liquid circulation passage is opened, and the aluminium liquid that leaves in the thermos cup begins to flow to mold cavity under the gravity effect, promptly start second oil cylinder, makes blocked shot spacing on the blocked shot stop collar.
H, close exhaust valve, open the air inlet pipe valve and inflate, leave aluminium liquid continuous pouring under the effect of gravity and gas pressure in the thermos cup in, fill type, feeding and crystallization and freezing.
Aluminium liquid in i, cooling aluminum-alloy wheel gravity casting die and the mold cavity, the moulding of aluminum-alloy wheel blank.
J, close the air inlet pipe valve, open exhaust valve and carry out exhaust.
K, startup cylinder are opened cover plate, and casting finishes.
L, die sinking discharging.
M, matched moulds start next casting circulation.
In sum, the rising head quantity of the aluminum-alloy wheel blank that aluminum alloy wheel gravity casting die of the present invention casts out is few, the following process amount reduces, improved the weight yield rate of product, and in casting process, because thermos cup is arranged, cooperatively interacting of pressue device and section block apparatus, after aluminium liquid can be treated manually all to be injected in the thermos cup again property automatically inject mold cavity, realize the continuous pouring of aluminium liquid, fill type, feeding and crystallization and freezing, the aluminium liquid phase is injected into aluminium liquid in the mold cavity again and again by artificial than prior art like this, artifact greatly reduces, need not on the top of the upper wheel rim die cavity of the mold cavity of aluminum alloy wheel gravity casting die of the present invention rising head to be set, just can cast out the good aluminum-alloy wheel blank of quality stability.
Claims (10)
1. aluminum-alloy wheel gravity casting die, it comprises cooling device (7), backform (1), limit mould (2), bed die (3) and by backform (1), limit mould (2) and the formed mold cavity of bed die (3) (4), described bed die (3) is provided with branch flow cone (5); It is characterized in that: described aluminum-alloy wheel gravity casting die also comprises the thermos cup (6) that is connected with mold cavity (4) and can deposits aluminium liquid, can make the aluminium liquid that leaves in the thermos cup (6) inject the interior pressue device of mold cavity (4) continuously, can stop the aluminium liquid that leaves thermos cup (6) under the gravity effect, to flow to the block apparatus that cuts in the mold cavity (4), described thermos cup (6) is arranged on the backform (1), described pressue device is installed on the frame (9.1) of Gravity casting machines (9), and described section block apparatus is installed in bed die (3) and goes up or be installed on the frame (9.1) of Gravity casting machines (9).
2. aluminum-alloy wheel gravity casting die according to claim 1, it is characterized in that: described thermos cup (6) comprises insulation cup (6.1) and insulation tube connector (6.2), the upper end of described insulation tube connector (6.2) is connected with the port of export of insulation cup (6.1), the lower end of described insulation tube connector (6.2) is connected with backform flange (1.1) on being installed in backform (1), the aluminium liquid circulation passage (19) that the port of export of described insulation cup (6.1), insulation tube connector (6.2) and backform flange (1.1) formation are connected with mold cavity (4).
3. aluminum-alloy wheel gravity casting die according to claim 2, it is characterized in that: described insulation cup (6.1) constitutes by the insulating lining (6.11) that plays insulation effect with to the passive overcoat of insulating lining (6.11) (6.12), also has been with the back boxing (6.13) of protection against erosion effect in the described insulating lining (6.11).
4. aluminum-alloy wheel gravity casting die according to claim 3, it is characterized in that: described insulation tube connector (6.2) constitutes by the insulating tube (6.21) that plays insulation effect with to the passive outer tube of insulating tube (6.21) (6.22), the upper end of described outer tube (6.22) is connected with the overcoat (6.12) of described insulation cup (6.1), and the lower end of described outer tube (6.22) is connected with backform flange (1.1) on being installed in backform (1).
5. aluminum-alloy wheel gravity casting die according to claim 2, it is characterized in that: described pressue device comprises cylinder (10), the bowl cover (8) that can match with the sealing of the cup-mouth end of described insulation cup (6.1) and be arranged on air inlet pipe (11) and blast pipe (12) on the bowl cover (8), described cylinder (10) is installed on the frame (9.1) of Gravity casting machines (9), described bowl cover (8) is connected with the piston rod of cylinder (10), be separately installed with air intake valve and drain tap on described air inlet pipe (11) and the blast pipe (12), described air inlet pipe (11) is connected with source of the gas.
6. aluminum-alloy wheel gravity casting die according to claim 5, it is characterized in that: described cylinder (10) is installed on the frame (9) of Gravity casting machines and is meant, described frame (9) is provided with threaded linkage section (9.1), be arranged with connecting plate (13) on the described linkage section (9.1), described connecting plate (13) is locked on the linkage section (9.1) through screwing at the locking nut (14) on the linkage section (9.1), and described cylinder (10) is fixedly mounted on the connecting plate (13).
7. aluminum-alloy wheel gravity casting die according to claim 2, it is characterized in that: described section block apparatus mainly is made of a minute flow cone (5) and first oil cylinder (15), described minute flow cone (5) be movably set on the bed die (3), described first oil cylinder (15) is installed on the bed die (3), described minute flow cone (5) be connected with the piston rod of first oil cylinder (15), described minute flow cone (5) conehead can paste mutually and seal with the port of export of aluminium liquid circulation passage (19).
8. aluminum-alloy wheel gravity casting die according to claim 6, it is characterized in that: described section block apparatus comprises second oil cylinder (16) that is fixedly mounted on the described connecting plate (13), is movably set in the blocked shot (17) on the bowl cover (8), described blocked shot (17) is connected with the piston rod of second oil cylinder (16), and the bar head of described blocked shot (17) can paste and seal mutually with the arrival end of aluminium liquid circulation passage (19).
9. aluminum-alloy wheel gravity casting die according to claim 1 is characterized in that: the top of the last wheel rim die cavity (4.1) of described mold cavity (4) is that backform seals or the limit mould seals or backform and Bian Mo seal.
10. the casting method of an aluminum-alloy wheel gravity casting die, it is characterized in that: this method may further comprise the steps:
A, matched moulds;
B, utilization cut a block apparatus and block aluminium liquid circulation passage, stop the aluminium liquid that leaves in the thermos cup to flow to mold cavity under the gravity effect;
C, startup cylinder are opened bowl cover;
D, screen pack is placed on the aluminium liquid circulation passage;
Inject the needed aluminium liquid of cast aluminum alloy wheel in e, the past thermos cup;
F, startup cylinder cover bowl cover;
G, make and cut a block apparatus return, aluminium liquid circulation passage is opened, and the aluminium liquid that leaves in the thermos cup begins to flow to mold cavity under the gravity effect;
H, close exhaust valve, open the air inlet pipe valve, leave aluminium liquid continuous pouring under the effect of gravity and gas pressure in the thermos cup in, fill type, feeding and crystallization and freezing;
I, utilize the aluminium liquid in cooling device cooling aluminum-alloy wheel gravity casting die and the mold cavity, the moulding of aluminum-alloy wheel blank.
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| CN201010606373A CN102029383B (en) | 2010-12-14 | 2010-12-14 | Aluminum alloy wheel gravity casting die and casting method thereof |
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| CN201010606373A CN102029383B (en) | 2010-12-14 | 2010-12-14 | Aluminum alloy wheel gravity casting die and casting method thereof |
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