CN104907530A - Powerful casting technology for aluminum alloy wheels - Google Patents
Powerful casting technology for aluminum alloy wheels Download PDFInfo
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- CN104907530A CN104907530A CN201410656120.7A CN201410656120A CN104907530A CN 104907530 A CN104907530 A CN 104907530A CN 201410656120 A CN201410656120 A CN 201410656120A CN 104907530 A CN104907530 A CN 104907530A
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Abstract
The invention discloses a powerful casting technology for aluminum alloy wheels. The powerful casting technology aims at solving the problems that in traditional low-pressure casting and gravity casting of the aluminum alloy wheels, the feeding capacity is weak, the strength of castings is low, and the ductility is low. According to the powerful casting technology for the aluminum alloy wheels, under the condition that materials are not changed, as the casting technology is changed, the application effects of increasing density, strength, the ductility, the material use rate and the production rate are achieved. The powerful casting technology is characterized in that conventional cast aluminum is smelted to be within a casting temperature range, casting is completed in an air-entrapment-free flow guide and speed-control mold filling mode, real-time powerful feeding in the solidification process is carried out on molten aluminum sealed in a cavity through a feeding pressurizing mechanism, a mold temperature control measure point and cooling-channel distribution method is given based on the sequential-solidification and rapid-cooling thought, and necessary conditions are provided for obtaining the castings with the tiny grain size and smoothly implementing powerful feeding.
Description
Technical field
The invention belongs to light-alloy forming technique field, application belongs to aluminum-alloy wheel manufacturing industry.
Background technology
At present, the forming technology of domestic and international aluminum-alloy wheel is mainly based on casting technique, and conventional casting technique comprises low pressure casting and gravitational casting.Low pressure casting process be aluminium liquid level below mould in holding furnace, enter mold cavity by the effect aluminium liquid of low-pressure gas pressure from bottom to top along stalk and complete and fill type, and carry out solidifying under the effect of low-pressure gas pressure and low pressure feeding to the wheel that is shaped.Gravitational casting is the effect by gravity, carries out the top-down type that fills and casts, the Action of Gravity Field of the Action of Gravity Field of cast gate place liquid or the special feeding intracavity liquid arranged also will be leaned on to realize the feeding in process of setting.
Wheel is as the important safety parts of automobile, the quality of wheel directly affects security and the light weight energy-saving effect of automobile, current gravity and low pressure casting two kinds of techniques are all faced with some problems, and the such as common weakness of two kinds of techniques is exactly that feeding pressure is low, feeding capacity is weak, plasticity index is low.Especially the wheel of low pressure casting, the percentage elongation at wheel disc place, center always can not be satisfactory, although the percentage elongation at the wheel disc place, wheel center of gravitational casting is a little more than the product of low pressure casting, but due to the existence of feeding cast gate, cause stock utilization low and there is the problem of going cast gate complex procedures, can not be satisfactory, and roll up gas phenomenon because gravity casting exists, cause cast-internal often to there is the defects such as pore, shrinkage cavity and shrinkage porosite.
Number of patent application: CN201310345280.5 disclosed " the auxiliary pressure gravity casting system of metal mold and casting method ", the method is the mould casting of feed liquid limit, cast gate waste material is larger, the present invention adopts center to cast, center casting ensure that the uniformity of strand circumferencial direction in cavity filling process, the aluminium liquid at cast gate place is injected mold cavity by brute force under the effect of feeding pressure, considerably improves stock utilization; Adopt compressed air feeding in this invention, pressure is 0.15-0.2MPa, and the present invention adopts feeding piston to carry out strong pressurizing feeding to feed liquid, feeding pressure limit 0.1-3.0MPa, and the two feeding pressure is all different from method; From principle, this patent from center feeding pressurization through mold cavity until cast gate place, limit does not form near closed hollow ring, powerful feeding of the present invention is exerted pressure on airtight mold cavity.
Number of patent application: CN200710027352.6C disclosed " gas pressure casting device for aluminum alloy wheel and casting method thereof " and number of patent application: 201320016053.3 disclosed " wheel hub antigravity feeding casting moulds ", in two patents, feeding medium is compressed air, and the present invention adopts the feeding piston of matched in clearance to carry out strong pressurizing feeding to feed liquid, the former is gas feeding, and the latter is mechanical means feeding; Up-small and down-big truncated cone-shaped is for the die cavity of feeding pressurization in two patents, what obtain is the foundry goods of half high truncated cone cast gate with pit, still need to remove cast gate further, feeding compression chamber described in this patent is the through hole with the uniform internal diameter of pressurizing piston matched in clearance, and effective pressurization feeding volume is 6 ~ 8% of mold cavity, when pressurization feeding completes, effective feeding volume is injected to mold cavity, therefore can obtain without cast gate foundry goods, naturally eliminate cast gate operation; Feeding compression chamber of the present invention is with the warm heater of benefit, and can ensure the mobility of aluminium liquid in replenish shrink process, above-mentioned two patents are not mentioned; Cast for all centers and the common problem of gas occurs at the bottom of ubiquity aluminium liquid drop large impact wall to roll up for many years, water conservancy diversion casting system is provided with in the present invention, can realize filling type without the casting of volume gas and control speed, established necessary basic condition for obtaining high-quality foundry goods, above-mentioned two patents are not mentioned fills type content without volume conductance stream and control speed.
Number of patent application: 201210328935.3 disclosed " aluminum-alloy wheel gravity compression castings ", side opening casting centered by the casting position of this invention, different from casting position of the present invention, this patent is other waters remaining cannot the discharging smoothly lower than interior aluminium liquid of taking turns bilabial degree of pipeline, is unfavorable for batch production; Be provided with water conservancy diversion casting system in the present invention, can realize filling type without the casting of volume gas and control speed, this patent does not relate to the content of this respect; The medium that the mold cools down of this patent adopts is compressed air, has no concrete cooling control principle, and this patent adopts water and wind as cooling medium, and gives cooling duct location mode and Die temperature control point layout method.
Summary of the invention
The present invention discloses the powerful casting technique of a kind of aluminum-alloy wheel casting technique-aluminum-alloy wheel, its unique distinction is: 1) invented powerful feeding mould structure: based on routine top, the end, limit mould, has set up feeding compression chamber (1-4) and the feeding pressurizing piston (1-3) that can move up and down at compression chamber (1-4) and water conservancy diversion piston (1-5) at patrix (1-8) lumen centers place; 2) based on this mould structure, invention integrates without the powerful casting technique of aluminum-alloy wheel of rolling up conductance stream casting feature, control speed fills type feature, automatic makeup wyntet's sign, powerful feeding feature, rapid sequential solidify cooling duct layout and Die temperature control measuring point position, technique of the present invention coordinates with corresponding powerful Casting Equipment, the wheel product of producing has the remarkable result that density is high, intensity is high and percentage elongation is high, and has higher production efficiency and stock utilization.
The powerful casting mould structure of aluminum-alloy wheel of the present invention is characterized by: with routine only by pushing up, the end, the mould of limit mould composition is different, the present invention is on this basis, feeding compression chamber (1-4) and the feeding pressurizing piston (1-3) that can move up and down in feeding compression chamber (1-4) and water conservancy diversion piston (1-5) has been set up in patrix (1-8) center, the cylindrical member of to be an internal diameter be in feeding compression chamber (1-4) D, the spider of its lower end and patrix (1-8) is connected, automatic makeup temperature device (1-7) is provided with outside it, its internal diameter D is by patrix centre bore and die cavity UNICOM, feeding pressurizing piston (1-3) and water conservancy diversion piston (1-5) are matched in clearance with feeding compression chamber (1-4) internal diameter, fit clearance is at 0.08-0.15mm, when water conservancy diversion piston (1-5) walks to bottom certain position, the endoporus of feeding compression chamber (1-4) and the die cavity of mould are UNICOMs, the foundation of the internal diameter D of compression chamber (1-4) and the determination of height H is: the ratio shunk according to aluminum alloy solidification, effective feeding volume C of compression chamber (1-4) should be not less than 6% of mold cavity volume, the determination of the height H of compression chamber (1-4) should meet the requirement of feeding volume C, the liquid level meeting after whole liquid pours into feeding compression chamber (1-4) again should a little more than interior peak of taking turns lip, determine the height H of feeding compression chamber (1-4), just can be that definite value determines that the general span of feeding compression chamber (1-4) internal diameter D(is at 50-80mm according to feeding volume C).
The powerful foundry technology process of aluminum-alloy wheel of the present invention is characterized by: by temperature 695-710 DEG C of quantitative aluminium liquid inject outlet with screen pack (1-20) there is quantitative weighing function water cup (1-2), the entrance that feeding compression chamber (1-4) is aimed in cup (1-2) outlet will be watered after matched moulds, opening the speed set according to programming without volume gas guiding device while watering cup (1-2) gate out switch drives water conservancy diversion piston (1-5) to move downward reposefully, aluminium liquid enters feeding compression chamber (1-4) under the guiding of water conservancy diversion piston (1-5), and carry out control speed by the aperture of the position control feeding compression chamber (1-4) of water conservancy diversion piston (1-5) and the passway of mold cavity and fill type, remove after mold cavity is full of and water cup (1-2), feeding pressurizing piston (1-3) enters feeding compression chamber (1-4) and carries out powerful feeding, in this process, compression chamber (1-4) automatic makeup temperature system and rapid sequential solidify cooling temperature control system and coordinate in real time, solidify feeding pressurizing piston (1-3) after terminating to return, die sinking goes out part, the Foundry Production beat of this explained hereafter different size wheel is adopted to be 160-220s/ part.
The powerful casting technique of aluminum-alloy wheel of the present invention has without volume conductance stream casting function, it is characterized in that: according to vacuum suction water conservancy diversion principle, the water conservancy diversion piston (1-5) of matched in clearance is with it provided with at circular feeding compression chamber (1-4) inwall, during casting, aluminium liquid moves down according to the speed pre-seted along with water conservancy diversion piston (1-5), be full of compression chamber (1-4) reposefully, eliminate aluminium liquid flings bottom generation volume gas phenomenon because drop is comparatively large.
The control speed of the powerful casting technique of aluminum-alloy wheel of the present invention is filled type and is characterised in that: aluminium liquid is toward the aperture of the passway between exporting under the filling velocity of mold cavity depends on the shunting profile of water conservancy diversion piston (1-5) upper end and feeding compression chamber (1-4), the present invention is by driving the mobile control realized access portal aperture of water conservancy diversion piston (1-5), and then flow-control when realizing filling type to wheel different parts, gas purging in mold cavity when this contributes to filling type.
The powerful feeding of the powerful casting technique of aluminum-alloy wheel of the present invention is characterised in that: by mold cavity, feeding compression chamber (1-4) and feeding pressurizing piston (1-3) form airtight die cavity, if solidifying of the aluminium liquid in die cavity is from outward appearance to inner essence, consecutive solidification by the wheel rim away from feeding compression chamber (1-4) to core wheel and even feeding compression chamber (1-4), so, when feeding pressurizing piston (1-3) moves down and executes stressed time, not solidified aluminium liquid can be deferred to Pascal's law and be transmitted to each side in the mode of isostatic pressed by the pressure in feeding pressurizing piston (1-3), until far-end freezing point, aluminium liquid in feeding compression chamber (1-4) is under pressure durations effect, injected mold cavity in real time, according to the volume ratio that aluminum alloy solidification shrinks, the aluminium liquid of being injected in mold cavity by feeding compression chamber (1-4) amasss and should be 6 ~ 8% of mold cavity volume, so-called " powerful feeding " refers to that feeding pressure limit is 0.1-3.0MPa, far above the feeding pressure of gravity and low pressure casting, maximum pressure is 30 times of low pressure casting feeding pressure, because liquid solidifies at a higher pressure, therefore better feeding effect and more fine and close foundry goods can be obtained.
The powerful casting technique of aluminum-alloy wheel of the present invention, set pressurization feeding room has automatic makeup temperature casting feature, described automatic makeup temperature water feature be achieved in that feeding compression chamber (1-4) outside be provided with mend warm device (1-7), when the temperature of point for measuring temperature is lower than setting value, automatic connection is mended warm device and is added compression chamber (1-4) and feed liquid and vulcanize temperature and automatically disconnect to design temperature, makes the feed liquid in feeding compression chamber (1-4) have good mobility filling in type and replenish shrink process.
The powerful casting technique of aluminum-alloy wheel according to claim 1, described mold temperature controls measuring point and cooling duct location mode, propose based on consecutive solidification, fast cooling thought, that the cooling duct location mode described in patent claims 1 refers in order to coordinate the die temperature control system of powerful Casting Equipment to design: the multiple field patrix being cooling medium with water or wind cooling distribution, polycycle counterdie cooling distribution and multipoint mode limit mould cooling distribution.Described multiple field patrix cooling distribution refers to: at the annular cooling channel of the top-down arranging multiplayer of the inner chamber of patrix, described polycycle counterdie cooling distribution refers to and has multiple annular cooling channel in counterdie bottom surface, and described multipoint mode limit mould cooling distribution refers to and is provided with point cooling passage at the outside wheel rim of limit mould and each spoke intersection; The point for measuring temperature layout for mold temperature control described in the claims in the present invention 1 refers to: using mould measuring point temperature as target variable, in order to the approximate representation for the such continuous media temperature field of mould, for bed die just in spoke, domestic and abroad layout maximum 3 set temperature sensors (Fig. 2, T
m1, T
m2, T
m3), in upper lower rim corresponding position, temperature sensor (Fig. 2, T are arranged at 2 at most for limit mould
m4, T
m5), variable T
m1, T
m2 ... T
m5 as control variables in order to characterize the state of mold temperature field; Be provided with cooling medium inlet/outlet temperature sensor (Fig. 2, T in addition
w1, T
w2 ... T
w7) as reference variable; Mold cools down TT&C system is formed together with the flow velocity valve that provides as the temperature sensor and the corresponding powerful casting machine that measure control variables (in Fig. 2 q1, to q7), flow sensor (in Fig. 2 Q1 to Q7), electromagnetic switch (in Fig. 2 K1 to K7) and PLC.By changing the flow velocity q of every road cooling medium
i, i=1,2 ... ntotal flow Q
i, i=1,2 ... n,with start-up time t
i, i=1,2 ... nthree class basic variables carry out the adjustment of mold temperature, the temperature value T of measuring point
m iin order to the target as three class basic variable adjustment, this using water or wind be cooling medium, flow velocity, flow and start-up time be as basic variable, with the mold temperature monitoring system that mould control point temperature is control variables, for processing parameter setting and adjustment provide numerical basis and digitlization control measures.
Compared with existing aluminum-alloy wheel casting technique, powerful its useful technique effect of casting technique of aluminum-alloy wheel of the present invention is used to be:
(1) to solve in gravitational casting and problem that low pressure casting feeding pressure is little, solve that casting volume gas that gravitational casting exists, dead head are large, filling velocity is difficult to control and easily occur the problems such as casting flaw;
(2) powerful feeding combines with flash set technology, shorten the die casting time, improve production efficiency, improves density, refinement casting blank crystal grains degree;
(3) the wheel strand obtained, without cast gate, is compared gravitational casting blank weight saving 10%, is not only increased stock utilization, and decreases and follow-up go cast gate operation;
(4) use this technique, wheel disc both sides all obtain half deep centre taper hole, eliminate pre-machined sequence when casting is revolved, and waste heat directly can be with to enter spinning machine and carry out heat and revolve;
(5) adopt the wheel product mechanical property of this explained hereafter good: strength ratio low pressure casting significantly improves, percentage elongation can reach 5-8%; The casting strength due to this process strengthening, and then can thinning wheel rim and spoke thickness, bring the lightweight energy-saving effect of product.
Accompanying drawing explanation
The powerful casting mould structure schematic diagram of Fig. 1.
Fig. 2 mold cools down temperature control system schematic diagram.
Powerful casting mould structure shown in Fig. 1 mainly comprises: casting machine slide block (1-1), water cup (1-2), feeding pressurizing piston (1-3), feeding compression chamber (1-4), water conservancy diversion piston (1-5), patrix cooling medium outlet (1-6), mend warm heater (1-7), patrix (1-8), limit mould (1-9), bed die cooling medium outlet (1-10), bed die (1-11), die bottom plate (1-12), water conservancy diversion oil cylinder (1-13), casting machine workbench (1-14), bed die ring-type cooling duct (1-15), bed die cooling medium entrance (1-16), limit mould cooling tube (1-17), patrix layering cooling duct (1-18), patrix cooling medium entrance (1-19), feed liquid screen pack (1-20), connecting struts (1-21).
Fig. 2 mold cools down temperature control system schematic diagram formation mainly comprises: mould temperature transducer (T
m1, T
m2, T
m3, T
m4, T
m5), cooling medium inlet temperature sensor (T0), cooling medium outlet temperature sensor (T
w1 to T
w7), warm heater K8, pressure chamber temperature sensor T8 mend in flow rate regulating valve (q1 to q7), flow sensor (Q1 to Q7), electromagnetic switch (K1 to K7), compression chamber.
Detailed description of the invention
(the present embodiment further illustrates of the present invention, instead of to any restriction that the present invention makes) is described in detail with regard to detailed description of the invention below in conjunction with accompanying drawing.
1 pair of detailed rules for the implementation is described by reference to the accompanying drawings, for a 16X6.5 cun aluminum-alloy wheel, adopts the casting process of this technique to be:
(1) first mould is carried out preheating, mold preheating temperature is 280 DEG C, aluminum alloy materials is A356, the heating-up temperature of aluminium liquid is 700 DEG C, as shown in Figure 1, be first mounted on casting machine by casting mould before work, the parts such as upper mould (1-8) and top board are connected with casting machine slide block (1-1) by connecting struts (1-21), bed die (1-11) is mounted to casting machine workbench (1-14) upside by die bottom plate (1-12), and limit mould (1-9) is connected with the limit mould oil cylinder of casting machine;
(2) will water in cup (1-2) and load quantitative liquid material, liquid material volume equals mold cavity volume and feeding volume sum, wherein feeding volume calculates according to the 6-8% of total material liquid volume, cup (1-2) will be watered move to feed entrance point and be connected with feeding compression chamber (1-4), now die casting machine water conservancy diversion oil cylinder (1-13) drives up the moving to of water conservancy diversion piston (1-5) to water cup (1-2) below, then the output switch watering cup (1-2) is opened, the aluminium liquid watered in cup flows in feeding compression chamber (1-4) thereupon, meanwhile water conservancy diversion piston (1-5) is descending, feed liquid is slowly caused in mold cavity stably, mould die cavity is filled by setting speed, remove aluminium liquid after filling type and water cup (1-2),
(3) the feeding pressurizing piston (1-3) of die casting machine is descending, to in feeding compression chamber (1-4), liquid level is pressurizeed, the pressure of powerful feeding is 0.1-3.0MPa, now the cooling water of patrix (1-8), bed die (1-11) and limit mould (1-9) is opened according to the cooling order of setting, thus realize foundry goods carry out powerful feeding in consecutive solidification process, watering liquid, filling in type and replenish shrink process, the heater (1-7) in outside, feeding compression chamber (1-4) can give liquid material concurrent heating at any time, ensure that the mobility of liquid material;
(4) layering dividing plate is provided with in patrix (1-8), layering dividing plate and patrix (1-8) die cavity form patrix layering cooling zone (1-18), patrix cooling entrance (1-19) and patrix coolant outlet (1-6) pass into each cooling layer respectively, realize the cooling to patrix (1-8), mold cools down temperature control system schematic diagram as shown in Figure 2, as preferably, this money wheel adopts water to be cooling medium, the patrix (1-8) of mould is divided into three layers, be connected with respectively three tunnels can thermometric, control the inlet channel of flow and opening and closing, and three tunnels can the water return pipeline of thermometric; Mold bottom die (1-11) inside is also provided with bed die ring-type cooling zone (1-15), bed die cooling medium entrance (1-16) and outlet (1-10) lay respectively at die bottom plate (1-12) both sides, die bottom plate (1-12) inside is provided with cooling duct and cooling pipe can be communicated with bed die ring-type cooling zone (1-15), as preferably, mold bottom die (1-11) is divided into tricyclic structure, be connected with respectively three tunnels can thermometric, control the cooling pipe of flow and opening and closing, and three tunnels can the cooling circuit pipeline of thermometric; Limit mould (1-9) has Cooling Holes on the position of spoke spoke, and limit mould cooling tube (1-17) is installed in limit mould (1-9) Cooling Holes, accesses respectively in limit mould cooling tube (1-17) into and out of cooling water pipe, realizes the multiple spot cooling of opposite side mould.Match with the control system of equipment in temperature control cooling duct, according to the calorie value that temperature and every road of mould point for measuring temperature are taken away, by opening flow velocity, Flow-rate adjustment and cooling, SECO combines, and controls to be that the mould temperature regulate and control method of target implements regulation and control setting with consecutive solidification cooling;
(5) after slab cooling, feeding pressurizing piston (1-3) promotes, and limit mould oil cylinder pulls limit mould (1-9) to open, and casting machine slide block (1-1) driven mold patrix (1-8) promotes subsequently, and strand discharging is to unloading position, and so far whole wheel cast process is complete.
Claims (8)
1. the present invention discloses the powerful casting technique of aluminum-alloy wheel, its unique distinction is: 1) invented certain moduli lamps structure: based on Yi Ding, the end, limit mould, has set up feeding compression chamber (1-4) and the feeding pressurizing piston (1-3) that can move up and down at compression chamber (1-4) and water conservancy diversion piston (1-5) at patrix (1-8) lumen centers place; 2) based on this mould structure, invention integrates without volume conductance stream casting feature, controls the powerful casting technique of aluminum-alloy wheel that speed fills type feature, automatic makeup wyntet's sign, powerful feeding characteristic sum mold temperature regulation and control measuring point and cooling duct location mode, coordinate with powerful Casting Equipment, the wheel product of producing has the remarkable result that density is high, intensity is high and percentage elongation is high, and has higher production efficiency and stock utilization.
2. the powerful casting technique of aluminum-alloy wheel according to claim 1, its mould structure is characterized by: with routine only by pushing up, the end, the mould of limit mould composition is different, the present invention is on this basis, feeding compression chamber (1-4) and the feeding pressurizing piston (1-3) that can move up and down in feeding compression chamber (1-4) and water conservancy diversion piston (1-5) has been set up in patrix (1-8) center, the cylindrical member of to be an internal diameter be in feeding compression chamber (1-4) D, the spider of its lower end and patrix (1-8) is connected, automatic makeup temperature device (1-7) is provided with outside it, its internal diameter D is by patrix centre bore and die cavity UNICOM, feeding pressurizing piston (1-3) and water conservancy diversion piston (1-5) are matched in clearance with feeding compression chamber (1-4) internal diameter, fit clearance is at 0.08-0.15mm, when water conservancy diversion piston (1-5) walks to bottom certain position, the endoporus of feeding compression chamber (1-4) and the die cavity of mould are UNICOMs, the foundation of the internal diameter D of compression chamber (1-4) and the determination of height H is: the ratio shunk according to aluminum alloy solidification, effective feeding volume C of compression chamber (1-4) should be not less than 6% of mold cavity volume, the determination of the height H of compression chamber (1-4) should meet the requirement of feeding volume C, the liquid level meeting after whole liquid pours into feeding compression chamber (1-4) again should a little more than interior peak of taking turns lip, determine the height H of feeding compression chamber (1-4), just can be that definite value determines that the general span of feeding compression chamber (1-4) internal diameter D(is at 50-80mm according to feeding volume C).
3. the powerful casting technique of aluminum-alloy wheel according to claim 1, its technical process is characterized by: by temperature 695-710 DEG C of quantitative aluminium liquid inject outlet with screen pack (1-20) there is quantitative weighing function water cup (1-2), the entrance that feeding compression chamber (1-4) is aimed in cup (1-2) outlet will be watered after matched moulds, opening the speed set according to programming without volume gas guiding device while watering cup (1-2) gate out switch drives water conservancy diversion piston (1-5) to move downward reposefully, aluminium liquid enters feeding compression chamber (1-4) reposefully under the guiding of water conservancy diversion piston (1-5), and carry out control speed by the aperture of the position control feeding compression chamber (1-4) of water conservancy diversion piston (1-5) and the passway of mold cavity and fill type, remove after mold cavity is full of and water cup (1-2), feeding pressurizing piston (1-3) enters feeding compression chamber (1-4) and carries out powerful feeding, in this process, compression chamber (1-4) automatic makeup temperature system and rapid sequential solidify cooling temperature control system and coordinate in real time, solidify feeding pressurizing piston (1-3) after terminating to return, die sinking goes out part, the Foundry Production beat of this explained hereafter different size wheel is adopted to be 160-220s/ part.
4. the powerful casting technique of aluminum-alloy wheel according to claim 1, it is characterised in that without volume conductance stream: according to vacuum suction water conservancy diversion principle, the water conservancy diversion piston (1-5) of matched in clearance is with it provided with at circular feeding compression chamber (1-4) inwall, during casting, aluminium liquid is followed water conservancy diversion piston (1-5) and is moved down according to the speed pre-seted, be full of compression chamber (1-4) reposefully, eliminate aluminium liquid flings bottom generation volume gas phenomenon because drop is comparatively large.
5. the powerful casting technique of aluminum-alloy wheel according to claim 1, its control speed is filled type and is characterised in that: the aperture of the passway between the filling velocity of aluminium liquid exports under depending on the shunting profile of water conservancy diversion piston (1-5) upper end and feeding compression chamber (1-4), the present invention is by driving the mobile control realized access portal aperture of water conservancy diversion piston (1-5), and then flow-control when realizing filling type to wheel different parts, gas purging in mold cavity when this contributes to filling type.
6. the powerful casting technique of aluminum-alloy wheel according to claim 1, its powerful feeding is characterised in that: by mold cavity, feeding compression chamber (1-4) and feeding pressurizing piston (1-3) form airtight die cavity, if solidifying of aluminium liquid is from outward appearance to inner essence in die cavity, consecutive solidification by the wheel rim away from feeding compression chamber (1-4) to core wheel and even feeding compression chamber (1-4), so, when feeding pressurizing piston (1-3) moves down and executes stressed time, not solidified aluminium liquid can be deferred to Pascal's law and be transmitted to each side in the mode of isostatic pressed by the pressure in feeding pressurizing piston (1-3), until far-end freezing point, aluminium liquid in feeding compression chamber (1-4) is under pressure durations effect, injected mold cavity in real time, according to the volume ratio that aluminum alloy solidification shrinks, the aluminium liquid of being injected in mold cavity by feeding compression chamber (1-4) amasss and should be 6 ~ 8% of mold cavity volume, so-called " powerful feeding " refers to the highest 3MPa that can be of feeding pressure, far above the feeding pressure of gravity and low pressure casting, it is 30 times of low pressure casting feeding pressure, because liquid solidifies at a higher pressure, therefore better feeding effect and more fine and close foundry goods can be obtained.
7. the powerful casting technique of aluminum-alloy wheel according to claim 1, the casting of described benefit temperature is characterised in that: be provided with in feeding compression chamber (1-4) outside and mend warm device (1-7), when the temperature of point for measuring temperature is lower than setting value, automatic connection is mended warm device and is added compression chamber (1-4) and feed liquid and vulcanize temperature and automatically disconnect to design temperature, makes the feed liquid in feeding compression chamber (1-4) have good mobility filling in type and replenish shrink process.
8. the powerful casting technique of aluminum-alloy wheel according to claim 1, described mold temperature regulation and control measuring point and cooling duct location mode, its feature part is: with water or wind for cooling medium, propose multiple field patrix cooling distribution, polycycle counterdie cooling distribution and multipoint mode limit mould cooling distribution, give the mould temperature measuring point position method controlled for mold temperature, for implementing powerful feeding smoothly and the foundry goods obtaining small grains degree provides measuring point information interface with the interface of equipment room and mold temperature state.
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| CN108526412A (en) * | 2018-06-07 | 2018-09-14 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting mould with a plurality of running channel |
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| CN108746566A (en) * | 2018-06-07 | 2018-11-06 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting method that can reinforce ear intensity on wheel hub |
| CN109420750A (en) * | 2017-12-29 | 2019-03-05 | 湖北航特装备制造股份有限公司 | A kind of aluminium alloy car fore sub frame metal-mold low-pressure casting mold |
| CN115846623A (en) * | 2022-12-22 | 2023-03-28 | 广东鸿兴精密科技股份有限公司 | Novel low pressure casting system |
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| CN106237680A (en) * | 2016-08-31 | 2016-12-21 | 重庆剑涛铝业有限公司 | The funneling defecator of secondary aluminium alloy double glazing fiber |
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| CN107552764A (en) * | 2017-08-15 | 2018-01-09 | 北京交通大学 | A kind of rheology forging rotation production method of rail wheel |
| CN107552764B (en) * | 2017-08-15 | 2019-08-23 | 北京交通大学 | A kind of rheology forging rotation production method of rail wheel |
| CN109420750A (en) * | 2017-12-29 | 2019-03-05 | 湖北航特装备制造股份有限公司 | A kind of aluminium alloy car fore sub frame metal-mold low-pressure casting mold |
| US10919083B2 (en) | 2018-03-19 | 2021-02-16 | Citic Dicastal Co., Ltd. | Process for manufacturing aluminum alloy wheel |
| CN108500234A (en) * | 2018-03-19 | 2018-09-07 | 中信戴卡股份有限公司 | A kind of manufacturing process of aluminum-alloy wheel |
| CN108500234B (en) * | 2018-03-19 | 2020-01-31 | 中信戴卡股份有限公司 | Manufacturing process of aluminum alloy wheels |
| CN108526427A (en) * | 2018-03-29 | 2018-09-14 | 泗阳敏于行精密机械有限公司 | A kind of aluminium alloy wheel hub casting lathe turner's skill of low energy consumption |
| CN108746566A (en) * | 2018-06-07 | 2018-11-06 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting method that can reinforce ear intensity on wheel hub |
| CN108526412A (en) * | 2018-06-07 | 2018-09-14 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting mould with a plurality of running channel |
| CN108526444A (en) * | 2018-06-07 | 2018-09-14 | 贵州华煜丰车轮制造有限公司 | A kind of high pressure hub casting method |
| CN108746566B (en) * | 2018-06-07 | 2019-10-18 | 田平康 | A kind of wheel hub casting method that can reinforce ear intensity on wheel hub |
| CN108526444B (en) * | 2018-06-07 | 2019-11-15 | 田平康 | A kind of high pressure hub casting method |
| CN108543915A (en) * | 2018-06-07 | 2018-09-18 | 贵州华煜丰车轮制造有限公司 | A kind of wheel hub casting mould and its casting method |
| CN108543914A (en) * | 2018-06-07 | 2018-09-18 | 贵州华煜丰车轮制造有限公司 | A kind of high pressure hub casting mould and its casting method |
| CN108543915B (en) * | 2018-06-07 | 2024-02-13 | 田平康 | Hub casting mold and casting method thereof |
| CN108543914B (en) * | 2018-06-07 | 2024-03-29 | 田平康 | High-pressure hub casting mold and casting method thereof |
| CN115846623A (en) * | 2022-12-22 | 2023-03-28 | 广东鸿兴精密科技股份有限公司 | Novel low pressure casting system |
| CN115846623B (en) * | 2022-12-22 | 2023-08-11 | 广东鸿兴精密科技股份有限公司 | Low pressure casting system |
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