CN102717049A - Method and device for realizing direct extrusion casting by utilizing closed mould pouring - Google Patents
Method and device for realizing direct extrusion casting by utilizing closed mould pouring Download PDFInfo
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- CN102717049A CN102717049A CN2012101948680A CN201210194868A CN102717049A CN 102717049 A CN102717049 A CN 102717049A CN 2012101948680 A CN2012101948680 A CN 2012101948680A CN 201210194868 A CN201210194868 A CN 201210194868A CN 102717049 A CN102717049 A CN 102717049A
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Abstract
The invention discloses a method and a device for realizing direct extrusion casting by utilizing closed mould pouring. The method comprises the following steps of: premoulding a convex mould and a concave mould to form a closed filling space; filling inertia protective gas into the filling space; introducing an alloy melt into a charging barrel by utilizing a transporting system; pressing the alloy melt into a mould cavity by a pressure head, thus filling is completed; and carrying out direct extrusion by adopting the way that the convex mould moves downward, and causing the alloy melt to be crystallized and solidified under pressure. The device for realizing the method has the main connection relationship that: the convex mould is fixedly connected with a movable cross beam of a casting machine; a convex mould limit support is fixedly connected with a convex mould base; a convex mould limit cushion block and a mould frame are in sliding fit and are connected with a hydraulic cylinder at a cushion block side; and the pressure head is arranged in the charging barrel in a movable fit manner and is connected with a filling/ejecting hydraulic cylinder of the casting machine. The method and the device disclosed by the invention fully utilize a direct extrusion mode and have the advantages that extrusion area is large, extrusion acting force transmission distance is short and uniform and pressure loss is less, and the alloy melt is transmitted by virtue of a closed pipeline, thus oxidation inspiration is reduced.
Description
Technical field
The present invention relates to direct extrusion casint field, be meant that specifically a kind of mold closing that is specially adapted to produce non-ferrous alloy casting pours into a mould the method and the device thereof of direct extrusion casint.
Background technology
At present, directly extrusion casting method all belongs to the die sinking cast, and the die sinking cast is to take manual work or with the mode of mechanical hand quantitative alloy melt is poured in the die, and punch pushes alloy melt then, makes alloy melt crystallization and freezing under pressure.Owing to adopt manual work or mechanical hand under die opening state, to pour into a mould, the shortcoming below therefore existing is with not enough:
1, contain from smelting furnace with pony ladle and get alloy melt cast, alloy melt is exposed in the air, the protection against oxidation difficulty, and be difficult to accurately control and water fluence.
2, must be behind casting complete could matched moulds die casting, therefore from being poured into press casting procedure length not only consuming time, and foundry goods forms defectives such as cold shut, segregation, difficult quality guarantee easily.
The molten condition of alloy melt during 3, for assurance die casting, the temperature that needs to improve the melt cast temperature or improve mould, the consumption of melting energy is big, and also be affected die life.
Summary of the invention
The objective of the invention is to the weak point to prior art, provide a kind of efficient, stable, the mold closing of low energy consumption is poured into a mould the method for direct extrusion casint.
Another object of the present invention also is to design the device that a kind of mold closing is poured into a mould direct extrusion casint for realizing that above-mentioned mold closing pours into a mould the method for direct extrusion casint.
The object of the invention can be realized through following measure:
A kind of mold closing is poured into a mould the method for direct extrusion casint, it is characterized in that: this method comprises: the preparatory mould assembly of punch and die, and what form sealing fills the type space; Fill inert protective gas in the type space toward filling, make it to reach slight positive pressure state; Utilize conveying system that alloy melt is introduced barrel; Pressure head is pressed into die cavity with alloy melt, accomplishes and fills type; The descending enforcement of punch is directly pushed, and alloy melt crystallization and freezing under pressure is shaped; The type space of filling of said sealing is meant that the alloy body that is squeezed in the relative die cavity is a closed state, and gas and collection slag, the external throttling connection of exhaust overflow on a small quantity.
Above-mentioned mold closing is poured into a mould the method for direct extrusion casint; It is characterized in that: the implementation method of said punch and the preparatory mould assembly of die is following: the casting machine main hydraulic cylinder drives the casting machine moved cross beam and drives punch connecting plate, punch joint pin, convex mould base, the spacing pillar of punch and punch descending, contacts with the spacing cushion block of punch up to the spacing pillar of punch; But the descending restriction that receives the spacing cushion block of punch of setting height of the spacing pillar of punch, but the type space is filled in the sealing of formation set volume between punch and the die.
The type space of filling of said sealing is that following two states selects one:
(1) a kind of for nearly end form fill type--the small deformation squeezed state, promptly punch and die be near extruding the preparatory mould assembly of article forming dimension, sets the punch crush stroke and only reserve the extrusion process alloy graining and shrink, push and compress the required mold cavity volume reduction of little distortion;
(2) a kind of for non-end form fill type--the large deformation squeezed state; Be punch and die according to the preparatory mould assembly of extrusion deformation degree after; Set the punch crush stroke except that reserving the volume compression amount that the extrusion process alloy graining shrinks, extruding compression little distortion is required, the alloy melt distortion is flowed when also leaving the punch extruding, secondary fills type until the required mold cavity volume reduction that is shaped.
The descending enforcement of the said punch directly method of extruding is: manually remove the spacing cushion block of punch by cushion block side Driven by Hydraulic Cylinder or enforcement, form row space under the punch; Punch comes downwards to the complete mould assembly of mould.
The descending enforcement of said punch is directly pushed, and its process comprises: when the casting machine main hydraulic cylinder drives punch and implements extruding, fill type/eject hydraulic cylinder and the central liquid cylinder pressure is embodied as the passive overflow that accurate quantification is set through oil piping system; Highest pressure when the pressure of said passive overflow is adjusted to less than punch extruded alloy melt in the die cavity.
A kind of mold closing of realization said method is poured into a mould the device of direct extrusion casint; Comprise punch, die, mould bases and holding furnace, it is characterized in that: this device also comprises punch connecting plate, punch joint pin, central liquid cylinder pressure, convex mould base, the spacing pillar of punch, cushion block side hydraulic cylinder, the spacing cushion block of punch, barrel heat-insulation layer, barrel, pressure head, branch flow cone, material muzzle, conveying pipeline, conveying system composition; Between this device various piece and and casting machine between get in touch as follows: punch is fixedly linked through convex mould base, punch joint pin, punch connecting plate and casting machine moved cross beam; Spacing pillar of punch and convex mould base are fixedly linked; Be slidingly matched between spacing cushion block of punch and the mould bases, and link to each other with cushion block side hydraulic cylinder; Pressure head is installed in the barrel movingly, and fills type/eject hydraulic cylinder to be connected with casting machine; Divide flow cone to be installed in the punch movingly, and link to each other with casting machine central liquid cylinder pressure; Holding furnace is connected with barrel through conveying system, conveying pipeline, material muzzle and communicates, and the barrel that the barrel heat-insulation layer is installed is connected with die and communicates.
Be equipped with in said protruding, the die and charge into venting plug and the gas pipeline that inert gas or throttling exhaust are used.
The thickness of the spacing cushion block of said punch is set according to the preparatory mould assembly enclosure space size of technological requirement, and requisite space is big more, the thicker of punch support column cushion block.
Said conveying system is selected electromagnetic pump conveying system or vapour-pressure type conveying system or mechanical piston formula conveying system for use.
The present invention compares with existing extrusion casting method has following outstanding advantage:
1, the present invention is in direct extrusion casint casting process; The die cavity that punch and die are formed seals all the time; And be provided with perfect throttling exhaust passage; Venting plug through in the die cavity charges into inert gas, forms the protective atmosphere of pressure-fired, and alloy melt transmits through closed conduct simultaneously; Both reduced the oxidation and the unfavorable factor such as air-breathing of liquation, made full use of again direct squeeze mode to the alloy melt squeezing action directly, big, the squeezing action power of squeezing action area transmits the short evenly prompt and few advantage of the pressure loss of distance.
2, the present invention can select use different conveying systems according to actual condition, and conveying system can be electromagnetic pump conveying system, vapour-pressure type conveying system or mechanical piston formula conveying system etc., selects dissimilar conveying systems to casting quality all less than influencing.
3, the present invention is in casting process; Near closed hollow ring has two states; Its advantage is respectively as follows: at nearly end form is under the small deformation squeezed state, and the descending stroke of punch only reserves that the extrusion process alloy graining shrinks, the required mold cavity volume reduction of extruding compression little distortion, the approaching article forming dimension that extrudes of the die cavity protruding, that die forms; Alloy melt has been full of die cavity and has realized the shaping of goods basically when filling type and finishing; Be that punch presses down that the face of exerting pressure just contacts with alloy melt fully when initial, like this can be at once to the extruding of alloy melt whole implementation after filling type and accomplishing, alloy melt is set up fast and kept high static pressure; Guarantee alloy melt crystallization and freezing under high pressure, reach and strengthen feeding and effect densified and that improve cast form property; Filling type at non-end form is under the large deformation squeezed state; The stroke of punch is except that reserving the volume compression amount that the extrusion process alloy graining shrinks, the extruding compression is required, and the alloy melt distortion is flowed when also leaving the punch extruding, secondary fills type until the required mold cavity volume reduction that is shaped.Alloy melt underfill die cavity when filling type and finishing; Punch presses down the face portion of initially exerting pressure and contacts with alloy melt; It is longer that the extrusion process punch presses down stroke, and mold cavity volume reduction, geomery variable quantity are bigger, and alloy melt under pressure flow deformation takes place and secondary fills type in extrusion process like this; Alloy melt is full of die cavity and sets up high static pressure when punch presses to desired location, reaches the effect that makes the article that extrude be shaped, strengthen feeding, densified and crystal grain thinning.
4, the spacing cushion block of punch of the present invention is to the restriction of punch downward storke, can accurately regulate different extruding reservation amount between punch and the die.As far as identical product, can make the decrement of each product identical, guarantee consistency of product.The spacing cushion blocks of punch of spacing cushion block of the punch that used thickness is adjustable or the many groups of making different-thickness are to satisfy the demand of different product decrement.
5, the present invention divides flow cone by the center Driven by Hydraulic Cylinder, divides the position-adjustable of flow cone in die cavity; The central liquid cylinder pressure can be when filling type alloy melt get into the flow velocity of die cavity, regulate and divide flow cone present position in mould an actor's rendering of an operatic tune, guarantee that the alloy liquation steadily is filled in the whole die cavity; Also can in cavity filling process, do dynamic adjustments according to the type characteristics of filling of different moulds.
6, the spacing cushion block of punch of the present invention remove and homing action can only need handle installation can realize that on cushion block this sampling device is simple, the application of suitable medium-sized and small enterprises with low cost through manually implementing.But in the cavity filling process after preparatory mould assembly is spacing; The spacing pressure of movable parts such as casting machine moved cross beam, mould is bigger, and passes through the spacing support function of punch on punch support limit cushion block, if manually implement the action that removes of the spacing cushion block of punch; Being difficult to overcome bigger frictional force extracts it out; Therefore implementing must increase the action that moves in the fine motion of a casting machine moved cross beam when manually removing, and removes spacing pressure, can manually remove the spacing cushion block operation of punch.Owing to move in the moved cross beam fine motion and can drive punch and move on after filling type and accomplishing; So both increased the activity time that fills type, extruding; Make alloy melt temperature decline in the die cavity; Cause alloy melt to be disturbed again and in die cavity irregular flow, influence follow-up extrusion molding usefulness, reduction extruding quality.The present invention has also adopted independent Driven by Hydraulic Cylinder to the spacing cushion block of punch for this reason, finishes and promptly directly removes the spacing cushion block of punch filling type, can shorten the time of filling type, extruding, avoids moving on the moved cross beam and does, and eliminates above-mentioned harmful effect.
7, the present invention fills type and head part with filling type/eject hydraulic cylinder and divide flow cone can realize passive overflow with the oil piping system of central liquid cylinder pressure; Through regulating passive overflow pressure size, can change and be provided with the size of alloy melt suffered pressure in casting machine main hydraulic cylinder enforcement extrusion process.Passive overflow simultaneously can make branch flow cone and pressure head when pressure is excessive, shrink back automatically, will fill alloy melt unnecessary in the type and concentrate on foundry goods and press surplus part, realizes the accurate quantification and the high accuracy shaping that extrudes article of extrusion casint process alloy melt.
8, central liquid cylinder pressure of the present invention drives and divides flow cone can realize loosing core and the head part action.After extrusion casint is accomplished, divide that flow cone is up looses core, reduce foundry goods the part of punch is held tightly power, and then open punch and die.Divide flow cone also can realize downward head part function, guarantee that foundry goods stays die, be convenient to pickup work.Simultaneously owing to divide flow cone up, under the certain situation of punch and die Lift, bigger pickup space is provided.
Description of drawings
Fig. 1 pours into a mould direct extrusion casint apparatus structure sketch map for a kind of mold closing;
Among the figure: the spacing cushion block 13- of 1- casting machine main hydraulic cylinder 2- casting machine brother woods post 3- casting machine moved cross beam 4- punch connecting plate 5- punch joint pin 6- central liquid cylinder pressure 7- convex mould base 8- punch 9- die 10- punch limited post 11- cushion block side hydraulic cylinder 12- punch barrel heat-insulation layer 14- barrel 15- pressure head 16- mould bases 17- casting machine fills type/eject hydraulic cylinder 18- and divides flow cone 19- venting plug 20- appendix 21- material muzzle 22- conveying pipeline 23- conveying system 24- alloy melt 25- holding furnace
The specific embodiment
Through following embodiment and accompanying drawing thereof the present invention is made further detailed description, but embodiment of the present invention is not limited thereto.
The casting machine that present embodiment adopts is the vertical casting machine (model LY-1600) of 16000KN, and conveying system 23 adopts electromagnetic pump (model EMPS-LC), also can select to use vapour-pressure type conveying system or mechanical piston formula conveying system according to actual condition.
The device of realizing the inventive method is as shown in Figure 1, it by the spacing cushion block of punch connecting plate 4, punch joint pin 5, central liquid cylinder pressure 6, convex mould base 7, punch 8, die 9, punch limited post 10, cushion block side hydraulic cylinder 11, punch 12, barrel heat-insulation layer 13, barrel 14, pressure head 15, mould bases 16, divide flow cone 18, venting plug 19, appendix 20, material muzzle 21, conveying pipeline 22, adopt conveying system 23, the holding furnace 25 of electromagnetic pump to form; Between this device various piece and and casting machine between get in touch as follows: punch 8 matches with die 9 and forms near closed hollow ring, and punch 8 is fixedly linked through convex mould base 7, punch joint pin 5, punch connecting plate 4 and casting machine moved cross beam 3; Punch limited post 10 is fixedly linked with convex mould base 7; Be slidingly matched between spacing cushion block 12 of punch and the mould bases 16, and link to each other with cushion block side hydraulic cylinder 11; Pressure head 15 is installed in the barrel 14 movingly, and fills type/eject hydraulic cylinder 17 to be connected with casting machine; Divide flow cone 18 to be installed in movingly in the punch 8, and link to each other with casting machine central liquid cylinder pressure 6; Holding furnace 25 is connected with barrel 14 through conveying system 23, conveying pipeline 22, the material muzzle 21 that adopts electromagnetic pump and communicates, and the barrel 14 that barrel heat-insulation layer 13 is installed is connected with die 9 and communicates; Conveying system 23 is installed in holding furnace 25 and conveying pipeline 22 interfaces.
The method implementation procedure that mold closing of the present invention is poured into a mould direct extrusion casint is following:
Cushion block side hydraulic cylinder 11 drives or implements the spacing cushion block 12 of punch support column is resetted; Casting machine main hydraulic cylinder 1 drives casting machine moved cross beam 3 and drives punch connecting plate 4, punch joint pin 5, convex mould base 7, punch support column 10 and punch 8 descending; Contact up to the spacing cushion block 12 of punch support limit post 10 and punch support column; Punch support limit post 10 downward storkes receive the restriction of the spacing cushion block 12 of punch support column; What form sealing between punch 8 and the die 9 fills the type space, accomplishes preparatory mould assembly; The two states that fills the type space of said sealing: a kind of is nearly end form-small deformation squeezed state; The descending stroke of punch is only reserved and is only reserved the mold cavity volume reduction decrement that the extrusion process alloy graining shrinks, the required extruding of extruding compression little distortion is required; The die cavity protruding, that die forms is near extruding the article forming dimension; Alloy melt has been full of die cavity and has realized the shaping of goods basically when filling type and finishing; Be that punch presses down that the face of exerting pressure just contacts with alloy melt fully when initial, like this can be at once to the extruding of alloy melt whole implementation after filling type and accomplishing, alloy melt is set up fast and kept high static pressure; Guarantee alloy melt crystallization and freezing under high pressure, reach and strengthen feeding and effect densified and that improve cast form property; A kind ofly in addition fill type-large deformation squeezed state for non-end form; The stroke of punch is except that reserving the volume compression amount that the extrusion process alloy graining shrinks, the extruding compression is required; Leave also that the distortion of punch when extruding alloy melt is flowed, secondary fills type until the required mold cavity volume reduction that is shaped; Alloy melt underfill die cavity when filling type and finishing, punch presses down the face portion of initially exerting pressure and contacts with alloy melt, and it is longer that the extrusion process punch presses down stroke; Mold cavity volume reduces, the geomery variable quantity is bigger; Flow deformation takes place and secondary fills type in alloy melt under pressure in extrusion process like this, and alloy melt is full of die cavity and sets up high static pressure when punch presses to desired location, reaches to cause the effect that the article that extrude are shaped and strengthen feeding, densified and crystal grain thinning.
The thickness of the spacing cushion block of said punch is set according to the preparatory mould assembly enclosure space size of technological requirement, and requisite space is big more, the thicker of punch support column cushion block.It is the spacing cushion block of punch of 25mm that present embodiment adopts thickness.
Central liquid cylinder pressure 6 driving branch flow cones 18 come downwards to and fill the type height; Gas transmission system fills the type space with inert gas through what gas pipeline 20 and venting plug 19 were packed into sealing, regulates that to fill type space internal gas pressure be that pressure-fired promptly is slightly larger than an atmospheric pressure.
Conveying system 23 is introduced barrel 14 with alloy melt 24, and when alloy melt reached scheduled volume in the barrel, conveying system 23 stopped to carry; Casting machine fills type/eject hydraulic cylinder 17 drive ram 15 alloy melt is pressed into mold cavity, accomplishes and fills type; Cushion block side hydraulic cylinder 11 drives spacing cushion block 12 displacements of punch; Form 10 times row spaces of punch limited post; Casting machine main hydraulic cylinder 1 drives casting machine moved cross beam 3 and drives punch connecting plate 4, punch joint pin 5, convex mould base 7, punch limited post 10 and punch 8 descending; Molten alloy is directly pushed, up to punch 8 and die 9 complete mould assemblys; Keep-up pressure, make alloy melt crystallization and freezing under pressure; Central liquid cylinder pressure 6 drives and divides flow cone 18 up; Casting machine main hydraulic cylinder 1 drives punch 8 and opened in 9 minutes with die; Casting machine fills type/the eject hydraulic cylinder 17 drive ram 15 up foundry goods that eject.
It is said in the descending enforcement of punch is directly pushed; When casting machine main hydraulic cylinder 1 drives punch 8 enforcement extruding; Fill type/eject hydraulic cylinder 17 and be embodied as the passive overflow that accurate quantification is set through oil piping system with central liquid cylinder pressure 6, and the adjustable size of overflow pressure joint, its pressure is adjustable as the highest pressure of die cavity when being slightly less than punch with setting pressure extruded alloy melt; The pressure of present embodiment punch extruded alloy melt is 60Mpa, and overflow pressure is 50Mpa.
Present embodiment is an example to make aluminium alloy wheel hub, and its technological process is:
The spacing cushion block of punch resets → the preparatory mould assembly of mould → minute flow cone go downwards to fill type position → filling inert gas → conveying system transmission alloy melt to barrel → pressure head with alloy melt be pressed into mold cavity → the shift out spacing cushion block → punch of punch to alloy melt exert pressure up to complete mould assembly → pressurize finish to solidifying → minute flow cone is up → open mould → pressure head to eject foundry goods.
Operating procedure of the present invention and process conditions thereof are following:
(1) preheated mold to 250 ℃, molten aluminium alloy is heated to 750 ℃;
(2) cleaning fixed mold and moving mold surface, spray paint;
(3) the spacing cushion block 12 of cushion block side hydraulic cylinder 11 driving punch resets;
(4) casting machine main hydraulic cylinder 1 driving punch 8 is descending, contacts up to the spacing cushion block 12 of punch limited post 10 and punch.
(5) divide flow cone 18 go downwards to the punch lower surface apart from the 58mm place;
(6) gas transmission system fills the type space with what inert gas was packed into sealing, and filling type space internal gas pressure is slight positive pressure state, i.e. 1010hPa;
(7) conveying system 23 transmission aluminium alloy melt 24 to barrels 14;
(8) pressure head 15 speed uplinks are 40mm/s, and promptly filling velocity is 40mm/s, promote molten aluminium alloy and are filled to mold cavity;
(9) cushion block side hydraulic cylinder 11 drives spacing cushion block 12 displacements of punch;
(10) casting machine main hydraulic cylinder 1 driving punch 8 is descending, and alloy melt is applied 1600T pressure;
(11) keep extruding force main hydraulic cylinder release after 3 minutes, casting solidification 6 minutes;
(12) divide flow cone 18 to be up to top and punch lower surface apart from the 15mm place;
(13) casting machine main hydraulic cylinder 1 drives punch 8 up 960mm;
(14) pressure head 15 is up, ejects foundry goods.
Claims (9)
1. a mold closing is poured into a mould the method for direct extrusion casint, and it is characterized in that: this method comprises: the preparatory mould assembly of punch and die, and what form sealing fills the type space; Fill inert protective gas in the type space toward filling, make it to reach slight positive pressure state; Utilize conveying system that alloy melt is introduced barrel; Pressure head is pressed into die cavity with alloy melt, accomplishes and fills type; The descending enforcement of punch is directly pushed, and alloy melt crystallization and freezing under pressure is shaped; The type space of filling of said sealing is meant that the alloy body that is squeezed in the relative die cavity is a closed state, and gas and collection slag, the external throttling connection of exhaust overflow on a small quantity.
2. a kind of mold closing according to claim 1 is poured into a mould the method for direct extrusion casint; It is characterized in that: the implementation method of said punch and the preparatory mould assembly of die is following: casting machine main hydraulic cylinder (1) drives casting machine moved cross beam (3) and drives punch connecting plate (4), punch joint pin (5), convex mould base (7), punch limited post (10) and punch (8) descending, contacts with the spacing cushion block of punch (12) up to punch limited post (10); The descending restriction that receives the spacing cushion block of punch (12) of punch limited post (10), form seal between punch (8) and the die (9) fill the type space.
3. a kind of mold closing according to claim 1 and 2 is poured into a mould the method for direct extrusion casint, it is characterized in that: the type space of filling of said sealing is that following two states selects one:
(1) a kind ofly fill type-small deformation squeezed state for nearly end form, promptly punch and die be near the preparatory mould assembly of extrusion forming dimension, sets that the punch crush stroke only reserves that the extrusion process alloy graining shrinks, extruding compression and the required mold cavity volume reduction of little distortion;
(2) a kind ofly fill type-large deformation squeezed state for non-end form; Be punch and die according to the preparatory mould assembly of extrusion deformation degree after; Set the punch crush stroke except that reserving the volume compression amount that the extrusion process alloy graining shrinks, the extruding compression is required, the alloy melt distortion is flowed when also leaving the punch extruding, secondary fills type until the required mold cavity volume reduction that is shaped.
4. a kind of mold closing according to claim 1 is poured into a mould the method for direct extrusion casint; It is characterized in that: the descending enforcement of the said punch directly method of extruding is: driven or implement manually to make the spacing cushion block of punch (12) displacement by cushion block side hydraulic cylinder (11), form punch (8) row space down; Punch comes downwards to the complete mould assembly of mould.
5. a kind of mold closing according to claim 1 is poured into a mould the method for direct extrusion casint; It is characterized in that: the descending enforcement of said punch is directly pushed; Its process comprises: when casting machine main hydraulic cylinder (1) drives punch (8) and implements extruding, fill type/eject hydraulic cylinder (17) and be embodied as the passive overflow that accurate quantification is set with central liquid cylinder pressure (6) through oil piping system; Highest pressure when the pressure of said passive overflow is adjusted to less than punch extruded alloy melt in the die cavity.
6. realize that aforesaid right requires a kind of mold closing of 1～5 said method to pour into a mould the device of direct extrusion casint; Comprise punch, die, mould bases and holding furnace, it is characterized in that: this device also comprises punch connecting plate (4), punch joint pin (5), central liquid cylinder pressure (6), convex mould base (7), punch limited post (10), cushion block side hydraulic cylinder (11), the spacing cushion block of punch (12), barrel heat-insulation layer (13), barrel (14), pressure head (15), divides flow cone (18), material muzzle (21), conveying pipeline (22), conveying system (23) to form; Between this device various piece and and casting machine between get in touch as follows: punch (8) is fixedly linked through convex mould base (7), punch joint pin (5), punch connecting plate (4) and casting machine moved cross beam (3); Punch limited post (10) is fixedly linked with convex mould base (7); Be slidingly matched between spacing cushion block of punch (12) and the mould bases (16), and link to each other with cushion block side hydraulic cylinder (11); Pressure head (15) is installed in the barrel (14) movingly, and fills type/eject hydraulic cylinder (17) to be connected with casting machine; Divide flow cone (18) to be installed in movingly in the punch (8), and link to each other with casting machine central liquid cylinder pressure (6); Holding furnace (25) is connected with barrel (14) through conveying system (23), conveying pipeline (22), material muzzle (21) and communicates, and the barrel (14) that barrel heat-insulation layer (13) are installed is connected with die (9) and communicates.
7. a kind of mold closing according to claim 6 is poured into a mould the device of direct extrusion casint, it is characterized in that: be equipped with in said punch (8), the die (9) and charge into the venting plug (19) and gas pipeline (20) that inert gas and throttling exhaust are used.
8. a kind of mold closing according to claim 6 is poured into a mould the device of direct extrusion casint; It is characterized in that: the thickness of the spacing cushion block of said punch (12); Enclosure space size according to preparatory mould assembly is set, and requisite space is big more, the thicker of the spacing cushion block of punch (12).
9. a kind of mold closing according to claim 6 is poured into a mould the device of direct extrusion casint, it is characterized in that: said conveying system (23) is selected electromagnetic pump conveying system or vapour-pressure type conveying system or mechanical piston formula conveying system for use.
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| CN2012101948680A CN102717049A (en) | 2012-06-13 | 2012-06-13 | Method and device for realizing direct extrusion casting by utilizing closed mould pouring |
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| CN102921921A (en) * | 2012-10-17 | 2013-02-13 | 华南理工大学 | Floating type direct extrusion casting mold and implementing method thereof |
| CN102921921B (en) * | 2012-10-17 | 2014-12-03 | 华南理工大学 | Floating type direct extrusion casting mold and implementing method thereof |
| CN105798263A (en) * | 2016-05-01 | 2016-07-27 | 中信戴卡股份有限公司 | Gas exhausting device for low-pressure casting die for aluminum alloy vehicle wheel |
| US10010934B2 (en) * | 2016-05-01 | 2018-07-03 | Citic Dicastal Co., Ltd | Exhausting device of low-pressure aluminum alloy wheel casting mold |
| CN105772692A (en) * | 2016-05-17 | 2016-07-20 | 洛阳秦汉精工股份有限公司 | Forming method and device for metal parts |
| CN105772692B (en) * | 2016-05-17 | 2018-01-02 | 洛阳秦汉精工股份有限公司 | The manufacturing process and building mortion of a kind of metal parts |
| TWI655040B (en) * | 2017-01-31 | 2019-04-01 | 日商豐田自動車股份有限公司 | Casting device and casting method |
| CN109047703A (en) * | 2018-11-02 | 2018-12-21 | 文春领 | Middle pressure antigravity casting technique |
| CN113042703A (en) * | 2021-01-12 | 2021-06-29 | 深圳市宏泰丰盛科技有限公司 | Machining process for reducing air holes generated in shell die casting |
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