CN104550824B - Rheology and thixotroping integrally casting shaping machine - Google Patents
Rheology and thixotroping integrally casting shaping machine Download PDFInfo
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- CN104550824B CN104550824B CN201510027688.7A CN201510027688A CN104550824B CN 104550824 B CN104550824 B CN 104550824B CN 201510027688 A CN201510027688 A CN 201510027688A CN 104550824 B CN104550824 B CN 104550824B
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- lathe
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Abstract
The present invention provides a kind of rheology and thixotroping integrally casting shaping machine, including engine base, lathe head plate, plate in lathe, lathe tailgate, formed product model, clamping apparatus, material injecting device and forging hammer device, lathe head plate, plate and lathe tailgate are vertically sequentially arranged above engine base in lathe, lathe head plate, plate and lathe tailgate are run through by brother's woods column respectively in lathe, formed product model includes fixed half and moving half, cover half is installed in lathe head plate, dynamic model is installed in lathe on plate, clamping apparatus includes Mode-locking oil cylinder and locking piston bar, the locking piston bar is located in Mode-locking oil cylinder and is connected with plate in lathe, forging hammer device includes forging and stamping booster-type accumulator and piston forging hammer, forging and stamping booster-type accumulator is arranged in lathe on plate, piston forging hammer is connected with forging and stamping booster-type accumulator.The present invention workable alloy material scope in production is wide, and mould sticking to mould tendency is small, and product qualification rate is high.
Description
Technical field
The present invention relates to casting technology field, in particular to a kind of rheology and thixotroping integrally casting shaping machine.
Background technology
Casting is that through cooled and solidified, Metal Melting is leveled processing into meeting necessarily required liquid and pouring into casting mold
The technical process of the casting of predetermined shape, size and performance is obtained afterwards.
The casting methods such as known gravitational casting, extrusion casint and Hpdc all there are it is objective the shortcomings that：
The defects of gravitational casting is low production efficiency, appearance unsightly, product size low precision；The defects of extrusion casint is
The product of casting has stomata, and crossing T6, (T6 is a kind of heat treatment process of wrought aluminium alloy, is " solution treatment+artificial aging "
Process) handle, interiors of products has gas enclosure bubbling；The defects of Hpdc shaped article is that alloy material use is restricted, internal
Institutional framework stomata is more, it is impossible to does T6 processing, anodic oxidation is unable to anode true qualities.
The content of the invention
It is an object of the invention to provide a kind of rheology and thixotroping integrally casting shaping machine, to overcome on of the prior art
State defect.
The present invention proposes plate, machine in a kind of rheology and thixotroping integrally casting shaping machine, including engine base, lathe head plate, lathe
Bed tail plate, formed product model, clamping apparatus, material injecting device and forging hammer device, plate and institute in the lathe head plate, the lathe
State lathe tailgate to be vertically sequentially arranged above the engine base, plate and the machine in the lathe head plate, the lathe
Bed tail plate is run through by brother's woods column respectively, and the formed product model includes fixed half and moving half, and the cover half is installed on the lathe
In head plate, the dynamic model is installed in the lathe on plate, and the clamping apparatus includes Mode-locking oil cylinder and locking piston bar, the lock
Mould piston rod is located in the Mode-locking oil cylinder and is connected with plate in the lathe, and the forging hammer device includes forging and stamping booster-type accumulator
And forging hammer, the forging and stamping booster-type accumulator are arranged in the lathe on plate, the forging hammer and the forging and stamping booster-type accumulator phase
Even.
Rheoforging, be molten metal pressure feed method, from the direct injection of storing pipe to product model in directly into
Type.Molten metal, is exactly made embryo material with product equivalent approximate shape by thixotroping shaping, then when being molded, is first heated embryo material,
After reaching the certain temperature of thixotroping shaping, shaping (namely forging molding method) in product model is put into.
The rheology and thixotroping integrally casting shaping machine of the present invention is integrated by rheoforging and thixotroping shaping, and the present invention is in life
Workable alloy material scope is wide during production, and mould sticking to mould tendency is small, and product qualification rate is high；Splash is not susceptible to during production, is produced
Product do not have cold shut, shrinkage cavity and wrap up in gas, improve the air-tightness of casting；Die life extends 40-50%, product quality than Hpdc
Stablize.
The product produced with the rheology and thixotroping integrally casting shaping mechanism of the present invention has the following advantages：Product quality
Height, Tissue distribution uniformly, body shrink and reduce, without hot cracking tendency, be inclined to without shrinkage porosite, mechanical property increases substantially, more can be with
Do T6 intensive treatments；Product solidification shrinkage is small, and dimensional accuracy is high, and allowance is small；Most of product is not required to follow-up machine and adds, significantly
Product development end batch production operation cost is saved；There is no gross segregation, thick, the thin and each position mechanical performance of product
Unanimously；Stress is remarkably decreased, and is shaped beneficial to thin-wall part.
Present invention further propose that the material injecting device is horizontal material injecting device.
Present invention further propose that the horizontal material injecting device includes filling tube, the filling tube with respect to the horizontal plane inclines
Oblique 8 to 13 degree, liquid metal can fill the casting cavity of the formed product model under the effect of gravity along the filling tube.It is special
Not preferably, the filling tube is inclined relative to horizontal 10 degree.
Present invention further propose that the quantity of the Mode-locking oil cylinder is two, it is separately positioned among the lathe tailgate
Both sides.
Present invention further propose that the forging and stamping booster-type accumulator is hydraulic accumulation energy pressurized cylinder, the hydraulic accumulation energy pressurized cylinder
It is located in the lathe on plate among plane.
Present invention further propose that further including product liftout attachment, which is located in the lathe head plate.
Present invention further propose that the product liftout attachment is single cylinder liftout attachment or double cylinder ejector devices.
Present invention further propose that the lathe head plate is rectangle, the material injecting device is located at the lathe head plate
Long side.
Present invention further propose that further including control system, the forging hammer device is controlled to be forged by the control system
Make.
The rheology and thixotroping integrally casting shaping machine of the present invention is by rheocasting and thixotroping casting integratedization, with existing height
Pressure die casting, extrusion casint, gravity casting are compared, and the present invention has the following advantages：The product cast out, appearance are better than forging and again
Power cast member；Product tensile strength, hardness, elongation percentage, mechanical performance and air-tightness etc. can match in excellence or beauty with forging；Product size precision
It is more much higher than forging, up to the requirement of accurate die casting；Production efficiency is higher than gravitational casting, low pressure casting and forging etc.；Casting
The aluminium alloy castings gone out can be T6 strengthen heat treatment, not blistering, materials'use, unlimited material alloys component, as long as aluminium alloy
Material；Casting is fine and close, crystal grain is tiny, beautiful, air-tightness is good, particularly does sandblasting non-scale in communication part filter cavity,
Without cold shut, sand hole；Using continuous casting continuous forging method, the alloy product cast out can also do anodic oxidation true qualities, bright-colored, equal
It is even.
The continuous casting continuous forging carried out using the present invention may replace existing gravitation casting method (without sand core product is put), low pressure is cast
Make the casting methods such as method, high pressure casting, forging method and liquid forging.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 be the present invention rheology and thixotroping integrally casting shaping machine preferred embodiment front view；
Fig. 2 be the present invention rheology and thixotroping integrally casting shaping machine preferred embodiment left view；
Fig. 3 is the sectional view along the line A-A in Fig. 2.
Reference numeral collects：
Engine base 7；Lathe head plate 6；Plate 4 in lathe；Lathe tailgate 2；Brother woods column 3；Brother's woods column clamp nut 1；Formed product
Model 5；Cover half 51；Dynamic model 52；Mode-locking oil cylinder 18；Locking piston bar 17；Forge and press booster-type accumulator 16；Piston forging hammer 19；Ejection
Oil cylinder 8；Ejection cylinder fixed plate 28；Product mandril 22；Filling tube 12；Feed rod connector 14；Material feeding oil cylinder 15；Feed rod
13；Filling tube return oil cylinder 11；Filling tube lifting cylinder 10；Fastening screw 20；Material injecting device base 9；Product size precision control
Cylinder 24 processed；Forge and press accumulator fixed plate 25.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention implementation being usually described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.Therefore, the reality of the invention to providing in the accompanying drawings below
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, belongs to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can mechanically connect or be electrically connected；It can be directly connected, can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
Embodiment 1, referring to figs. 1 to the rheology and the preferred embodiment of thixotroping integrally casting shaping machine that 3, Fig. 1 is the present invention
Front view, Fig. 2 be the present invention rheology and thixotroping integrally casting shaping machine preferred embodiment left view, Fig. 3 is along Fig. 2
In line A-A sectional view.
As shown in Figures 1 to 3, the rheology and thixotroping integrally casting shaping machine are vertical rheology and thixotroping integrally casting shaping
Plate 4 in machine, including engine base 7, lathe head plate 6, lathe, lathe tailgate 2, formed product model 5, clamping apparatus, material injecting device and
Forging hammer device.
Plate 4, lathe tailgate 2 are vertically sequentially arranged above engine base 7 in lathe head plate 6, lathe, lathe head plate 6,
Plate 4 and lathe tailgate 2 are run through by four brother woods columns 3 respectively in lathe, solid with brother's woods column clamp nut 1 above lathe tailgate 2
Fixed, plate 4 and lathe tailgate 2 are preferably rectangular slab in lathe head plate 6, lathe.
Formed product model 5 is provided between plate 4 and lathe head plate 6 in lathe, formed product model 5 includes cover half 51
With dynamic model 52, cover half 51 is installed in lathe head plate 6, and dynamic model 52 is installed in lathe on plate 4.
Clamping apparatus includes Mode-locking oil cylinder 18, is preferably set up two Mode-locking oil cylinders 18, which distinguishes
The upper plane both ends of lathe tailgate 2 are fixed on, are provided with locking piston bar 17 in Mode-locking oil cylinder 18, locking piston bar 17 uses it
Plate 4 is connected with screw rod and fastened in the flanged plate and lathe on head.In work, dynamic model 52 is under the promotion of locking piston bar 17 along brother
Woods column 3 is moved towards 51 direction of cover half so that dynamic model 52 forms the casting cavity of a closing after being molded with cover half 51.
The forging hammer device includes forging and stamping booster-type accumulator 16, and forging and stamping booster-type accumulator 16 is preferably hydraulic accumulation energy supercharging
Cylinder, sets piston forging hammer 19 in the hydraulic accumulation energy pressurized cylinder.Booster-type accumulator 16 is forged and pressed by forging and pressing accumulator fixed plate 25
It is fixed in lathe on plate 4, in work, piston forging hammer 19 is under the driving of forging and stamping booster-type accumulator 16 to formed product model 5
In product forged.The hydraulic accumulation energy pressurized cylinder is located in lathe on plate 4 among plane.
The casting forming machine preferably further includes the control system not shown in figure, can be automatically controlled by the control system
Forging hammer device is forged.
Preferably, product liftout attachment is further included, which is located at the lathe head of the lower section of formed product model 5
In plate 6, which includes ejection cylinder 8, ejection cylinder fixed plate 28 and product mandril 22, and ejection cylinder 8 is fixed
In ejection cylinder fixed plate 28, ejection cylinder fixed plate 28 is fixed on 6 downside of lathe head plate, product mandril 22 and ejection
Piston in oil cylinder 8 is connected, and product mandril 22 can be by the product in formed product model 5 under the driving of hydraulic oil in oil cylinder 8
Ejection, the quantity of ejection cylinder 8 can be one or two.
Material injecting device is horizontal material injecting device, which is arranged on the side of engine base 7, is preferably disposed at lathe head
The long side of plate 6, can be injected liquid metal in casting cavity by the filling system.
Material injecting device includes filling tube 12, and filling tube 12 is inclined relative to horizontal 8 to 13 degree, preferably tilts 10 degree,
Liquid metal can fill the casting cavity of formed product model 5 under the effect of gravity along filling tube 12.
Material injecting device further includes material feeding oil cylinder 15, feed rod 13, filling tube return oil cylinder 11 and filling tube lifting cylinder
10.Feed rod 13 is connected by feed rod connector 14 with material feeding oil cylinder 15, and filling tube return oil cylinder 11 passes through fastening screw 20
It is fixed in lathe head plate 6, filling tube lifting cylinder 10 is installed on material injecting device base 9, passes through filling tube lifting cylinder 10
It can carry out the descending operation of filling tube 12.
The casting forming machine further further includes product size precision controlling cylinder 24, product size precision controlling cylinder
24 quantity is preferably two, and is symmetrically arranged in lathe on plate 4, passes through 24 energy of product size precision controlling cylinder
Adjust the dimensional accuracy of the molding product in formed product model 5.
The rheology and the course of work of thixotroping integrally casting shaping machine are：
After inputting relevant operating parameter in the controls, start to work, Mode-locking oil cylinder 18 is downward by locking piston bar 17
Release, promote dynamic model 52 to be moved along brother woods column 3 towards 51 direction of cover half so that dynamic model 52 forms one after being molded with cover half 51
The casting cavity of closing, then start it is quantitative automatic take soup machine, molten metal is poured into filling tube 12, molten metal is along 12 note of filling tube
Enter to cast in cavity, molten metal fills the casting cavity, after material feeding terminates, control system with natural speed under the effect of gravity
The forging and stamping booster-type accumulator 16 of control drives piston forging hammer 19 to be forged and pressed, and formed product model 5 is protected after forging and stamping
Pressure.
Rheoforging, be molten metal pressure feed method, from the direct injection of storing pipe to product model in directly into
Type.Molten metal, is exactly made embryo material with product equivalent approximate shape by thixotroping shaping, then when being molded, is first heated embryo material,
After reaching the certain temperature of thixotroping shaping, shaping (namely forging molding method) in product model is put into.
In the present invention, during molten metal filling product forming model, molten metal is to be obtained by the inclination of filling tube from upper past
Under center of gravity power fill formed product model.Here it is the fundamental difference of the invention with traditional filling model method, passing
In the casting of system, molten metal is all to fill model with pressure injection device into formed product model.
The rheology and thixotroping integrally casting shaping machine of the present embodiment exist rheoforging and thixotroping shaping integration, the present invention
Workable alloy material scope is wide during production, and it is that applied metal liquid essence is natural from top to bottom that molten metal of the present invention, which enters model,
Gravity, to fill model, mould sticking to mould tendency is small during the product depanning of such forming, and product qualification rate is high；It is not easy during production
Generation splash, product do not have cold shut, shrinkage cavity and wrap up in gas, improve the air-tightness of casting；Die life extends 40- than Hpdc
50%, product quality is stablized.
The rheology and thixotroping integrally casting shaping machine of the present embodiment are particularly suitable for the casting of aluminium alloy.
When carrying out aluminium alloy shaping with the rheology and thixotroping integrally casting shaping machine of the present embodiment, include the following steps：
(A) filling tube 12 is poured into using the quantitative automatic molten aluminum for taking soup machine taking-out temperature to be 630-700 DEG C, molten aluminum is in gravity
Flowed under effect with natural speed in formed product model 5；
(B) after material feeding, the forging and stamping booster-type accumulator 16 for enabling control system control at once drives piston forging hammer to carry out
Forging and stamping；
(C) after forging and pressing, pressurize, dwell time 5-8 second are carried out.
In the present embodiment, during molten aluminum filling product forming model, molten aluminum is obtained from top to bottom by the inclination of filling tube
Center of gravity power fill formed product model.Here it is the fundamental difference of the invention with traditional filling model method, in tradition
Casting in, molten aluminum is all to fill model with pressure injection device into formed product model.
Aluminium alloy shaping is carried out with the rheology and thixotroping integrally casting shaping machine of the present embodiment, it is and of the prior art common
The high pressure feeding method of die casting is compared, and it is to apply molten aluminum essence natural gravity from top to bottom that molten aluminum of the present invention, which enters model, to fill out
Mold filling type, the product depanning glutinous model not easy to stick of such forming, saves the energy, reduces production cost, productivity improves, in life
Mold parting surface molten aluminum is not easy splash and wraps up in gas during production, improves the air-tightness of alloy product.
The rheology and thixotroping integrally casting shaping machine of the present embodiment are applicable in the production of various Aluminium Alloys in Common Use.Using the present invention
The casting that embodiment is produced, which can also carry out solution heat treatment (T4 or T6 etc.), further strengthens mechanical property, from
And obtain the second best in quality casting and higher mechanical property.
The specific component content of wherein molten aluminum is as shown in table 1 below：
The specific component list of 1 molten aluminum of table
The product produced with the rheology and thixotroping integrally casting shaping mechanism of the present embodiment has the following advantages：Product quality
Height, Tissue distribution uniformly, body shrink and reduce, without hot cracking tendency, be inclined to without shrinkage porosite, mechanical property increases substantially, more can be with
Do T6 intensive treatments；Product solidification shrinkage is small, and dimensional accuracy is high, and allowance is small；Most of product is not required to follow-up machine and adds, significantly
Product development end batch production operation cost is saved；There is no gross segregation, thick, the thin and each position mechanical performance of product
Unanimously；Stress is remarkably decreased, and is shaped beneficial to thin-wall part.
The rheology and thixotroping integrally casting shaping machine of the present invention can also be horizontal in addition to vertical type described above
Type, the structure of horizontal type are rotated by 90 ° relative to the structure level of vertical type.
The rheology and thixotroping integrally casting shaping machine of the present invention is particularly suitable for the casting of aluminium alloy.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of rheology and thixotroping integrally casting shaping machine, it is characterised in that including plate, lathe in engine base, lathe head plate, lathe
Tailgate, formed product model, clamping apparatus, material injecting device and forging hammer device, plate and described in the lathe head plate, the lathe
Lathe tailgate is vertically sequentially arranged above the engine base, plate and the lathe in the lathe head plate, the lathe
Tailgate is run through by brother's woods column respectively, and the formed product model includes fixed half and moving half, and the cover half is installed on the lathe head
On plate, the dynamic model is installed in the lathe on plate, and the clamping apparatus includes Mode-locking oil cylinder and locking piston bar, the locked mode
Piston rod is located in the Mode-locking oil cylinder and is connected with plate in the lathe, the forging hammer device include forging and stamping booster-type accumulator and
Forging hammer, the forging and stamping booster-type accumulator are arranged in the lathe on plate, and the forging hammer is connected with the forging and stamping booster-type accumulator；
The material injecting device is horizontal material injecting device；The horizontal material injecting device includes filling tube, and the filling tube is with respect to the horizontal plane
8 to 13 degree are tilted, liquid metal can fill the casting cavity of the formed product model under the effect of gravity along the filling tube；
The rheology and thixotroping integrally casting shaping machine further include product size precision controlling cylinder, the product size precision control
Cylinder processed is arranged to two, and two product size precision controlling cylinder axises are symmetrically disposed on plate in the lathe, described
Product size precision controlling cylinder can adjust the dimensional accuracy of molding product in the formed product model.
2. rheology according to claim 1 and thixotroping integrally casting shaping machine, it is characterised in that the filling tube relative to
Horizontal plane tilts 10 degree.
3. rheology according to claim 1 and thixotroping integrally casting shaping machine, it is characterised in that the number of the Mode-locking oil cylinder
Measure the both sides for two, being separately positioned among the lathe tailgate.
4. rheology and thixotroping integrally casting shaping machine according to claims 1 to 3 any one, it is characterised in that described
Forging and stamping booster-type accumulator is hydraulic accumulation energy pressurized cylinder, which is located in the lathe on plate among plane.
5. rheology and thixotroping integrally casting shaping machine according to claims 1 to 3 any one, it is characterised in that also wrap
Product liftout attachment is included, which is located in the lathe head plate.
6. rheology according to claim 5 and thixotroping integrally casting shaping machine, it is characterised in that the product liftout attachment
For single cylinder liftout attachment or double cylinder ejector devices.
7. rheology and thixotroping integrally casting shaping machine according to claims 1 to 3 any one, it is characterised in that described
Lathe head plate is rectangle, and the material injecting device is located at the long side of the lathe head plate.
8. rheology and thixotroping integrally casting shaping machine according to claims 1 to 3 any one, it is characterised in that also wrap
Control system is included, which controls the forging hammer device to be forged.
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| CN201510027688.7A CN104550824B (en) | 2015-01-19 | 2015-01-19 | Rheology and thixotroping integrally casting shaping machine |
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|---|---|---|---|
| CN201510027688.7A CN104550824B (en) | 2015-01-19 | 2015-01-19 | Rheology and thixotroping integrally casting shaping machine |
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| Publication Number | Publication Date |
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| CN104550824A CN104550824A (en) | 2015-04-29 |
| CN104550824B true CN104550824B (en) | 2018-04-27 |
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| CN110560619A (en) * | 2019-09-10 | 2019-12-13 | 苏州三基铸造装备股份有限公司 | Three-station extrusion forging forming equipment working in cooperation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554628A (en) * | 2012-01-20 | 2012-07-11 | 广州有色金属研究院 | Casting-forging hydropress and method for casting and forging product thereof |
| CN103273039A (en) * | 2013-05-14 | 2013-09-04 | 广州有色金属集团有限公司 | Hydraulic spotting mould clamping type liquid forging squeeze casting machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201950191U (en) * | 2011-01-06 | 2011-08-31 | 苏州三基铸造装备股份有限公司 | Horizontal type squeeze casting machine |
| CN102218520B (en) * | 2011-05-26 | 2013-04-24 | 哈尔滨工业大学 | Light-alloy die-casting, filling, forging and compacting integrated forming device |
| CN102274943B (en) * | 2011-08-10 | 2013-04-17 | 浙江一锻重型设备制造有限公司 | Automatic die-casting machine for reverser |
| CN203711803U (en) * | 2014-01-26 | 2014-07-16 | 东莞市益格机电有限公司 | Energy-saving die casting machine |
| CN204396830U (en) * | 2015-01-19 | 2015-06-17 | 张卫红 | Stream becomes and thixotroping integrally casting forming machine |
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- 2015-01-19 CN CN201510027688.7A patent/CN104550824B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554628A (en) * | 2012-01-20 | 2012-07-11 | 广州有色金属研究院 | Casting-forging hydropress and method for casting and forging product thereof |
| CN103273039A (en) * | 2013-05-14 | 2013-09-04 | 广州有色金属集团有限公司 | Hydraulic spotting mould clamping type liquid forging squeeze casting machine |
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Effective date of registration: 20160908 Address after: 1, building 511700, building E, 12 East Fourth Street, East Main Road, Sha Tau community, Changan Town, Dongguan, Guangdong Applicant after: Dongguan Hongying Mechanical Technology Co. Ltd. Address before: 419600 Yuanling County of Hunan province Yuanling town Mafang No. 2 building 104 room 4 circles Applicant before: Zhang Weihong |
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