CN104368790B - A kind of metal liquid fluctuates high die casting forging one-step moulding method - Google Patents
A kind of metal liquid fluctuates high die casting forging one-step moulding method Download PDFInfo
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- CN104368790B CN104368790B CN201410632333.6A CN201410632333A CN104368790B CN 104368790 B CN104368790 B CN 104368790B CN 201410632333 A CN201410632333 A CN 201410632333A CN 104368790 B CN104368790 B CN 104368790B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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Abstract
The present invention provides a kind of metal liquid and fluctuates the one-time formed method of high die casting forging, on high die casting forging one-shaper is fluctuated, liquid device is turned using insulation liquid metal is transported to die entrance, liquid metal is inputted using pressure by the casting of mould cavity pressure again, 0.01~2S after liquid metal is full of die cavity, it is instantaneous to complete to forge liquid in die cavity or the fluctuation high pressure of semi-solid-state metal, complete die casting forging one-shot forming, compression casting and fluctuation high pressure forging step are specifically included, strictly controls technological parameter.Using method provided by the invention, compression casting and fluctuation high pressure forging one-shot forming are carried out to liquid or semi-solid-state metal in the same production cycle, the parts prepared significantly reduce compared to traditional die casting in shrinkage cavity quantity, and intensity and elongation percentage are improved significantly.Method provided by the invention is particularly suitable for producing precision optical machinery parts complex-shaped, that intensity requirement is high, and its manufacturing cost is low, and does not influence production efficiency.
Description
Technical field
The invention belongs to metal material liquid condition shaping technical field, specifically the present invention relates to a kind of metal material from liquid
State fluctuates high die casting to the metal liquid of high-performance components forges one-time formed method.
Background technology
Because cost is low, efficiency high can prepare the product of complicated shape, and be widely used for liquid metal pressure casting, but
Melted metal injects mold cavity under high pressure, high speed, easily causes that the gas in die cavity is difficult to exclude and turbulent flow is led
Cause to be formed in casting stomata, shrinkage cavity and it is loose the defects of, particularly die casting is complex-shaped, performance requirement is high precision optical machinery zero
Part yield rate is low, influences its performance, such as automobile using structural member.Therefore, domestic and international researcher studies new casting method one after another
And former.Current existing forming technique such as semisolid is penetrated casting, evacuated die-casting process and squeeze casting technology and arisen at the historic moment.Half is solid
It is big that state penetrates type casting moulding equipment investment, and technology controlling and process is difficult；The system sealing of evacuated die-casting process shaping is complicated, and vacuum is difficult to control,
Vacuum valve easily blocks, and cleaning is frequent；Squeeze cast form filling velocity is too slow, influences production efficiency.Based on above reason, on
State forming method and be difficult to industrialization.
Published patent document (Publication No. CN103834836A) provides a kind of manufacture of die casting reflectal
Method, using die casting and once forging, secondary forging and subsequent heat treatment and mechanical treatment technique, prepare a kind of new die casting aluminium
Alloy.Patent document (Publication No. CN103418771A) discloses a kind of casting and forging molding method of metalwork, makes molten condition
Raw metal cools to form metalwork, then metalwork is forged and pressed again and forming processes, and it is less to possess die cast process,
And time-consuming shorter characteristic.But the above method its forging technology is all carried out afterwards in die casting and shaping, so easily produce
The defects of not familiar pine, shrinkage cavity and stomata, influence the compactness of product.
Based on problem above, patent purpose of the present invention is that providing a kind of metal liquid fluctuates high die casting forging one-shot forming side
Method, it can be achieved to be continuously finished high-pressure casting in same forming process and fluctuation high pressure forge two kinds of functions, while realize to part
The accurate control of function, shape and size, the defects of loose product, shrinkage cavity and stomata is greatly decreased, improve the compactness of product.
In addition, applying fluctuation high pressure hammering in metal liquid solidification process, the large dendritic crystal of inside is smashed, thinning microstructure, is further carried
Rise the performance of product；The product after shaping can be finally heat-treated, lift the mechanical property of casting again；Casting and forging molding exists
Completed simultaneously in very short time, do not influence production efficiency.
The content of the invention
The present invention proposes a kind of metal liquid and fluctuates the one-time formed method of high die casting forging, especially by following technique side
Case is realized：
High die casting forging one-shaper is fluctuated, its principle is that fluctuation high pressure forging work(is added on the basis of pressure casting machine
Can, two big stroke oil cylinder completes matched moulds and rear mold motion；Forge and press oil cylinder and small stroke nitrogen cylinder completes liquid or semisolid mould
Forging；Conveying blank oil cylinder inputs liquid metal to filling die cavity, completes compression casting and the high die casting forging one-shot forming of fluctuation.Adopt
Included with the structure of pressurization forging mold outside the front and rear mould similar with die casting, framed, core rod, sliding block and runner, in addition to
The drift that can be forged.It is liquid metal injection to mould type that metal liquid, which fluctuates high die casting, which forges one-time formed technological process,
Chamber, compression casting and fluctuation high pressure forging one-shot forming.
A kind of metal liquid fluctuates high die casting forging one-step moulding method concrete technology and comprised the following steps：
A, compression casting step
On high die casting forging one-shaper is fluctuated, after metal after 500-800 DEG C dissolves completely, turn liquid dress using insulation
Put and melt is transported to die entrance, with 8-40Mpa pressure, melt is input to die cavity by 0.01-10m/s filling speed
It is interior, complete compression casting.The control of above die-casting technological parameter directly affects whether molten metal liquid can fill up whole mould
Die cavity, and the porosity of metallic article.
B, high pressure forging step is fluctuated
Compression casting 0.01-2s after melt is full of die cavity, instantaneously completes the fluctuation to the liquid or semi-solid-state metal
High pressure is forged, and the forging pressure for controlling the fluctuation high pressure to forge is 5-40Mpa, and the temperature of forging mold is 200-400 DEG C, forging
Hurried number is 1-5 times, and adjacent forging time twice is at intervals of 0.01-1s.
It is hydraulic pressure or baric systerm, or both combination to fluctuate high pressure forging power, can free switching at any time, air pressure system
Opposing hydraulic system Forging Equipment Speed of uniting is fast.Controlled forge process pressure is 5-40Mpa, the direct shadow of speed and pressure of forging pressure system
The heterogeneous microstructure of parts is rung, so as to influence the quality of parts.
The temperature of controlled forge process mould is 200-400 DEG C, and mould uses electrical heating, and mold temperature directly affects parts
The life-span of quality and mould.
The time that controlled forge process starts is the 0.01-2s after liquid metal fills up whole mold cavity, forges the time started
The solid-liquid ratio in melt is directly affected, the forging time started is too short, does not form dendrite in melt also, hammering does not act on effect
Fruit；The forging time started is oversize, and dendrite has been fully cured in melt, hammering crushing effect unobvious.
Controlled forge process number is 1-5 times, and forging times directly affect the quality and energy consumption of parts, and forging times are few, zero
The performance of part does not reach optimum value；Forging times are excessive, and the performance boost to parts does not work, and increase energy consumption.
Adjacent forging time twice is controlled to forge interlude length twice at intervals of 0.01-5s and directly affect liquid
The solidification process of metal, so as to influence forging effect.
A kind of metal liquid provided by the invention, which fluctuates high die casting, forges one-time formed method has compared with prior art
Advantages below：
High die casting is fluctuated using a kind of metal liquid proposed by the present invention and forges one-time formed method, in the same production cycle
In compression casting and fluctuation high pressure forging one-shot forming are carried out to liquid or semi-solid-state metal, the parts prepared are compared to pressure
Casting significantly reduces in shrinkage cavity quantity, and intensity and elongation percentage can effectively improve, and is particularly suitable for producing complex-shaped, intensity requirement
High precision optical machinery parts, manufacturing cost is low, and does not influence production efficiency.
Brief description of the drawings
Embodiments of the present invention is further illustrated referring to the drawings, wherein：
Fig. 1 is the process chart that a kind of metal liquid of the present invention fluctuates high die casting forging one-step moulding method.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The invention provides a kind of metal liquid to fluctuate high die casting forging one-step moulding method, fluctuate high die casting forging once into
On type machine, liquid metal is inputted using pressure by the casting of mould cavity pressure and fluctuation high pressure forging one-shot forming, cast using pressure
The 0.01-2s after melt is full of die cavity is made, it is instantaneous to complete to forge the liquid or the fluctuation high pressure of semi-solid-state metal.Fluctuation is high
Die casting forging one-shaper manufactures and designs on the basis of common die casting machine, and most of structure and accessory are identical with die casting machine,
Only increase forging and stamping oil cylinder and the component of correlation.
The process chart that a kind of metal liquid that Fig. 1 is the present invention fluctuates high die casting forging one-step moulding method is referred to,
Specific technological parameter and step are as follows：
A, compression casting
On high die casting forging one-shaper is fluctuated, after metal after 500-800 DEG C dissolves completely, turn liquid dress using insulation
Put and melt is transported to die entrance, with 8-40Mpa pressure, 0.01-10m/s filling speed is by melt injection to mould type
Intracavitary, complete compression casting.The control of above die-casting technological parameter directly affects whether molten metal melt can fill up entirely
Mold cavity, and the porosity of final metallic article.
B, high pressure forging step is fluctuated
1) high pressure forging dynamical system pressure is fluctuated
Fluctuation high pressure forging power is hydraulic pressure or baric systerm, both can free switching at any time, baric systerm is with respect to liquid
Pressure system Forging Equipment Speed is fast.Controlled forge process pressure is 5-40Mpa, and the speed and pressure of forging pressure system directly affect parts
Heterogeneous microstructure, so as to influence the quality of parts.
2) temperature of high pressure forging mold is fluctuated
The temperature of controlled forge process mould is 200-400 DEG C, and mould uses electrical heating, and mold temperature directly affects parts
The life-span of quality and mould.
3) the high pressure forging time started is fluctuated
The time that controlled forge process starts is the 0.01-2s after liquid metal fills up whole mold cavity, forges the time started
Directly affect the solid-liquid ratio in melt.The forging time started is too short, does not form dendrite in melt also, hammering does not act on effect
Fruit；The forging time started is oversize, and dendrite has been fully cured in melt, hammering DeGrain.
4) high pressure forging times are fluctuated
Controlled forge process number is 1-5 times, and forging times directly affect the quality and energy consumption of parts, and forging times are few, zero
The performance of part does not reach optimum value；Forging times are excessive, and the performance boost to parts does not work, and increase energy consumption.
5) adjacent forging time interval of pressurizeing twice
Adjacent forging time twice is controlled to forge interlude length twice at intervals of 0.01-5s and directly affect liquid
The solidification process of metal, so as to influence forging effect
Methods described further comprises being heat-treated the module after fluctuation high pressure forging, can lift the module again
Mechanical property.
Specific embodiment one：A kind of metal liquid fluctuates high die casting forging one-step moulding method and prepares auto parts and components.
Using high die casting forging one-shaper is fluctuated, its principle is that fluctuation forging work(is added on the basis of pressure casting machine
Can, its structure is that two big stroke oil cylinder completes matched moulds and rear mold motion；Forge and press oil cylinder and small stroke nitrogen cylinder complete liquid or
Semisolid die forging；Convey blank oil cylinder：Liquid metal is inputted to filling die cavity.
Structure using pressurization forging mold includes the front and rear mould similar with die casting, framed, core rod, sliding block and runner
Outside, in addition to the drift that can forge.
It is as follows that metal liquid fluctuates the technique that high die casting forging one-step moulding method prepares auto parts and components：
A, compression casting
Using fluctuating on high die casting forging one-shaper, for metal after 690 DEG C dissolve completely, turning liquid device using insulation will
Melt is transported to die entrance, and with 8-14Mpa pressure, liquid metal is input in mold cavity by 4m/s filling speed,
Until filling finishes, compression casting shaping is completed.
B, high pressure forging is fluctuated
It is 14Mpa to fluctuate high pressure forging power and nitrogen pressure system or hydraulic system, controlled forge process pressure may be selected；
The temperature of controlled forge process mould is 250 DEG C, and mould heating uses electrically heated mode；
The time that controlled forge process starts is the 0.01s after liquid metal fills up whole mold cavity；
Controlled forge process number is 3 times；
Adjacent forging time twice is controlled at intervals of 1.7s；
The defects of loose product, shrinkage cavity and stomata is greatly reduced in the auto parts and components prepared by process above method,
Product compactness is good, is significantly reduced than traditional die casting in shrinkage cavity quantity, and intensity and elongation percentage improve more than 20%.
The embodiment of present invention described above, is not intended to limit the scope of the present invention..Any basis
The various other corresponding changes and deformation that the technical concept of the present invention is made, should be included in the guarantor of the claims in the present invention
In the range of shield.
Claims (2)
1. a kind of metal liquid fluctuates high die casting forging one-step moulding method, on high die casting forging one-shaper is fluctuated, using guarantor
Temperature turns liquid device and liquid metal is transported into die entrance, then liquid metal is inputted the casting of mould cavity pressure using pressure, its
It is characterised by, 0.01~2S after liquid metal is full of die cavity, instantaneously completes the fluctuation to liquid in die cavity or semi-solid-state metal
High pressure is forged, and is completed die casting forging one-shot forming, is specifically included following steps：
A, compression casting step
On high die casting forging one-shaper is fluctuated, liquid device is turned by delivery of molten metal to die entrance using insulation, then adopt
With pressure high-pressure casting is carried out in liquid metal input die cavity, it is 500-800 DEG C to control the melted metal temperature, casting
It is 8-40Mpa, filling speed 0.01-10m/s to make pressure；
B, high pressure forging step is fluctuated
Compression casting 0.01~2S after liquid metal is full of die cavity, is instantaneously completed to liquid in die cavity or the ripple of semi-solid-state metal
Dynamic high pressure forging, the fluctuation high pressure are forged to hydraulic system forging, baric systerm forging or both combination, control the ripple
The forging pressure of dynamic high pressure forging is 5-40Mpa, and the temperature of forging mold is 200-400 DEG C, and forging times are 3-5 times, adjacent
Forging time is at intervals of 0.01-5s twice；
Methods described further comprises being heat-treated the casting after fluctuation high pressure forging, lifts the mechanical property of the casting
Energy.
2. a kind of metal liquid according to claim 1 fluctuates high die casting forging one-step moulding method, it is characterised in that described
It is 0.01-2s to fluctuate the high pressure forging time started, and the fluctuation high pressure forging time started is the compression casting metal bath
Fill up after whole die cavity to first time pressurization forging start between time interval.
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| CN105344974A (en) * | 2015-12-15 | 2016-02-24 | 哈尔滨工业大学 | Method for applying fluctuating pressure in low-pressure casting process |
| CN105458629B (en) * | 2015-12-15 | 2018-06-08 | 铜陵铜官府文化创意股份公司 | Copper walnut and its production method |
| CN108251715A (en) * | 2018-02-08 | 2018-07-06 | 山东弗泽瑞金属科技有限公司 | Suitable for the aluminum alloy materials of vacuum low speed pressure casting method |
| CN108568505A (en) * | 2018-04-17 | 2018-09-25 | 广东鸿图南通压铸有限公司 | A kind of process improving pack alloy accumulator holder burst pressure |
| RU2764620C2 (en) * | 2018-07-10 | 2022-01-18 | Общество С Ограниченной Ответственностью "Бетарут" | Method and device for liquid forging of double action |
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| FR2654660B1 (en) * | 1989-11-23 | 1994-07-08 | Renault | LIQUID FORGING PROCESS. |
| CN100544858C (en) * | 2004-12-03 | 2009-09-30 | 嘉瑞国际控股有限公司 | The one-time formed method of two controls is forged in metal liquid die casting |
| CN2759644Y (en) * | 2004-12-24 | 2006-02-22 | 李远发 | Dual-control one-shot die for moulding of liquid metal with compression casting and forging |
| CN2788958Y (en) * | 2005-04-22 | 2006-06-21 | 李远发 | Metal hydraulic die casting & forging double-controlling one-time forming pressure casting and forging machine |
| CN201249347Y (en) * | 2008-09-09 | 2009-06-03 | 李远发 | Metal fluid die-casting forging horizontal double-control forming machine |
| CN103990775B (en) * | 2014-06-06 | 2017-07-07 | 支前明 | Extruding metal autoform method and its product |
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Effective date of registration: 20190108 Address after: 516083 Jiarui Industrial Park, Longhai Third Road, Daya Bay West District, Huizhou City, Guangdong Province Patentee after: Richwood Industrial Science and Technology (Huizhou) Co., Ltd. Address before: 518111 Jiarui Science and Technology Industrial Park, Fenghuang Avenue, Pinghu Street, Longgang District, Shenzhen City, Guangdong Province, 1 building A1, A2, B1, B2, C1, C2 Patentee before: Chong Jin Technology (Shenzhen) Co., Ltd. |
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