CN107297484B - A kind of low-pressure casting method of aluminium alloy - Google Patents
A kind of low-pressure casting method of aluminium alloy Download PDFInfo
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- CN107297484B CN107297484B CN201710762213.1A CN201710762213A CN107297484B CN 107297484 B CN107297484 B CN 107297484B CN 201710762213 A CN201710762213 A CN 201710762213A CN 107297484 B CN107297484 B CN 107297484B
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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
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
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Abstract
The invention discloses a kind of low-pressure casting methods of aluminium alloy, specifically comprise the following steps: prepared by S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, is heated at high temperature aluminium alloy, heating temperature is 700-750 DEG C, enables aluminum alloy to be melted to molten metal；The detection of S2 device and preparation: dismountable mold is used, use the preceding combustion residue with air removal aluminium slag and sand core, then first-class coating is maintained, check the air-tightness for keeping furnace, whether observation cast gate blocks, detection open-close module has dislocation-free sealing problem, keeps the temperature of furnace between 680-730 DEG C；S3 pressurization: molten metal being placed in and is kept in furnace, and to keeping furnace to add a certain amount of aluminium powder, 1-2h is sufficiently stirred, and then to the air pressure or inert gas of leading to 0.01-0.05Mpa bigger than atmospheric pressure in furnace is kept, is realized to the pressurization in furnace；The present invention can simplify duplicate technique in current low-pressure casting method, improve work efficiency.
Description
Technical field
The present invention relates to die-casting and molding technology field more particularly to a kind of low-pressure casting methods of aluminium alloy.
Background technique
At the beginning of the blank of low pressure casting method can trace back to last century, stock utilization possessed by low pressure casting method is utilized
The advantages that note soup high, easy to accomplish automates, centered on automobile component, gradually establishes the main casting of light alloy casting
Secured status；Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machine
It has been widely applied in tool manufacture, ship and chemical industry, the rapid development of industrial economy, the demand to aluminum alloy piping welding structural member
Also increasing；And existing low-pressure casting process is more complicated at present, also ununified specification and standard, therefore causes to give birth to
The casting of production is irregular, and production efficiency is low, and duplicate process increases the labor burden of worker, so that the production of production
The product market competitiveness is not high, and in the holding furnace of hot environment, internal molten metal is easy to aoxidize, thus after making
Characteristic also changes correspondingly in the continuous finished product produced.
Through retrieving, application No. is 201410701840.0 patents, disclose a kind of low-pressure casting process, and feature exists
In, include the following steps: the preparation of 1) tool and material: coat will be sufficiently stirred before, and whether the ventilation of grilled mold device is uniform,
Joint forbids having gas leak phenomenon, and spray gun must first check for leaks, and gasket seal, filter screen, high temperature resistant luboil are ready to；
2) mold prepares；3) molten aluminum prepares and requires: molten aluminum surveys hydrogen density >=2.45g/cm3, and temperature of aluminum liquid is referred to by low pressure production operation
Book requirement control is led, holding furnace adds soup is forward and backward must thoroughly skim, and molten aluminum storage time≤4 hour in holding furnace are more than
It is forbidden to use within 4 hours；4) die sinking temperature requirement reaches 380~450 DEG C, molds samming 3-6 minutes, and die sinking 3PCS pours the product of picking,
With weighing apparatus temperature and improve mold temperature.Using low-pressure casting process simple process of the invention, many repeated processes are eliminated, are mentioned
High working efficiency, although simplifying the technique of repeatability, in condensation process, due to the contraction of volume, in casting thickness
Big position may will form shrinkage cavity or shrinkage porosite, and then influence the processing performance of last casting.
In view of the above-mentioned problems, current low pressure casting can be simplified first it is necessary to design a kind of low-pressure casting method of aluminium alloy
Duplicate technique in method is made, avoids occurring shrinkage cavity or shrinkage porosite phenomenon in casting, improves casting utilization rate, and then improve work
Efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of low-pressure casting method of aluminium alloy, have that method is simple, improves work effect
Rate advantage, solves many techniques repetitions and complexity in current low-pressure casting method, and the thick big position of casting may will form shrinkage cavity
Or the problem of shrinkage porosite.
A kind of low-pressure casting method of aluminium alloy according to an embodiment of the present invention, specifically comprises the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, and high-temperature heating aluminium closes
Gold, heating temperature are 700-750 DEG C, enable aluminum alloy to be melted to molten metal；
The detection of S2 device and preparation: using dismountable mold, surplus using the preceding burning for removing aluminium slag and sand core with air
Excess, then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open mold has
Dislocation-free sealing problem keeps the temperature of furnace between 680-730 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, to keeping furnace to add a certain amount of aluminium powder, 1-2h is sufficiently stirred, then
To the air pressure or inert gas of leading to 0.01-0.05Mpa bigger than atmospheric pressure in furnace is kept, realize to the pressurization in furnace, pressurization
Time is 2-8 minutes, should rapidly be boosted immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is in 350-
Between 450 DEG C, burn close time at 4-6 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, and is cooled to solid-state temperature or less to casting
When, it is removed from the molds casting.
On the basis of above scheme, aluminium alloy in S1 step, including following component in parts by weight: aluminium 80-
85 parts, 2-3 parts of silicon, 4-5 parts of iron, 10-20 parts of copper, 3-9 parts of manganese, 12-18 parts of magnesium, 0.5-2.5 parts of chromium, 1-2 parts of zinc, 1-2 parts of titanium.
On the basis of above scheme, aluminium powder in the S3 step, including following component in parts by weight: aluminium 20-40
Part, 6-8 parts of aluminium oxide, 1-2 parts of carbon, 2-4 parts of lithium.
On the basis of above scheme, in the S3 step, the inert gas is one of nitrogen, argon gas, helium.
On the basis of above scheme, the material of the stalk is made of ceramics.
Compared with the prior art, the invention has the beneficial effects that: aluminium alloy can be completed by five steps of S1-S5
Low pressure casting, method is simple, and the part that will test the installation of device and the maintenance of device and air-tightness is unified before the pressing
It is handled, enormously simplifies duplicate technique in current low-pressure casting method；By adding a certain amount of aluminium into molten metal
Powder is contacted with air and is reacted, and then forms layer oxide film, and the antioxygenic property of casting greatly improves；When filling type to mould
When having top, solid fraction has occupied sizable ratio in liquid metal, should rapidly boost immediately at this time, to overcome weight
The negative interaction of power carries out feeding, ensure that the compactness of casting, avoid the generation that shrinkage cavity or shrinkage porosite phenomenon occurs in casting；It rises
Liquid pipe using made of ceramics, be since ceramics will not react with molten metal, it is relatively firm at high temperature, by holding
In furnace lead to the big 0.01-0.05Mpa of atmospheric pressure air pressure or inert gas, molten metal by gas pressure effect, under
It is full of type chamber along stalk and running gate system on and, has achieved the effect that mold, molten metal is from mould type under such mode
The lower part of chamber slowly starts to fill, and solidifies after keeping the pressure of a period of time, avoids the generation of the bubble in forming process, greatly
The ratio of briquetting of casting is improved greatly；On the whole, the low-pressure casting method of this kind of aluminium alloy can simplify current low pressure casting side
Duplicate technique, improves work efficiency in method, avoids occurring shrinkage cavity or shrinkage porosite phenomenon in casting, the tensile strength of casting with
Yield strength all generally improves, and highest improves 6.6%, and hardness also generally improves, and highest improves 10.8%, and it is swollen to reduce heat
Swollen coefficient, casting utilization rate improve 1%-5%.
Specific embodiment
To further understand the features of the present invention, technological means and concrete function achieved, below with specific implementation
The invention will be described in further detail for mode.
Embodiment 1
The low-pressure casting method for present embodiments providing a kind of aluminium alloy, specifically comprises the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, and high-temperature heating aluminium closes
Gold, heating temperature are 700-750 DEG C, enable aluminum alloy to be melted to molten metal；
The detection of S2 device and preparation: using dismountable mold, surplus using the preceding burning for removing aluminium slag and sand core with air
Excess, then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open mold has
Dislocation-free sealing problem keeps the temperature of furnace between 680 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, and to keeping furnace to add a certain amount of aluminium powder, 1h is sufficiently stirred, then to
The air pressure or inert gas of leading to 0.01Mpa bigger than atmospheric pressure in furnace are kept, is realized to the pressurization in furnace, pressing time 2
Minute, it should rapidly boost immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is 350
Between DEG C, burn close time at 4 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, and is cooled to solid-state temperature or less to casting
When, it is removed from the molds casting.
Aluminium alloy, including following component in parts by weight: 80 parts of aluminium, 2 parts of silicon, 4 parts of iron, 10 parts of copper, 3 parts of manganese, magnesium
12 parts, 0.5 part of chromium, 1 part of zinc, 1 part of titanium.
Aluminium powder, including following component in parts by weight: 20 parts of aluminium, 6 parts of aluminium oxide, 1 part of carbon, 2 parts of lithium.
Inert gas is nitrogen.
The material of stalk is made of ceramics.
Embodiment 2
The low-pressure casting method for present embodiments providing a kind of aluminium alloy, specifically comprises the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, and high-temperature heating aluminium closes
Gold, heating temperature are 700-750 DEG C, enable aluminum alloy to be melted to molten metal；
The detection of S2 device and preparation: using dismountable mold, surplus using the preceding burning for removing aluminium slag and sand core with air
Excess, then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open mold has
Dislocation-free sealing problem keeps the temperature of furnace between 692.5 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, to keeping furnace to add a certain amount of aluminium powder, 1.25h is sufficiently stirred, then
To the air pressure or inert gas of leading to 0.02Mpa bigger than atmospheric pressure in furnace is kept, realize that pressing time is to the pressurization in furnace
It 3.5 minutes, should rapidly boost immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is 375
Between DEG C, burn close time at 4.5 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, and is cooled to solid-state temperature or less to casting
When, it is removed from the molds casting.
Aluminium alloy, including following component in parts by weight: 81.25 parts of aluminium, 2.25 parts of silicon, 4.25 parts of iron, copper 12.5
Part, 4.5 parts of manganese, 13.5 parts of magnesium, 1 part of chromium, 1.25 parts of zinc, 1.25 parts of titanium.
Aluminium powder, including following component in parts by weight: 25 parts of aluminium, 6.5 parts of aluminium oxide, 1.25 parts of carbon, 2.5 parts of lithium.
Inert gas is argon gas.
The material of stalk is made of ceramics.
Embodiment 3
The low-pressure casting method for present embodiments providing a kind of aluminium alloy, specifically comprises the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, and high-temperature heating aluminium closes
Gold, heating temperature are 700-750 DEG C, enable aluminum alloy to be melted to molten metal；
The detection of S2 device and preparation: using dismountable mold, surplus using the preceding burning for removing aluminium slag and sand core with air
Excess, then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open mold has
Dislocation-free sealing problem keeps the temperature of furnace between 705 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, to keeping furnace to add a certain amount of aluminium powder, 1.5h is sufficiently stirred, then
To the air pressure or inert gas of leading to 0.03Mpa bigger than atmospheric pressure in furnace is kept, realize that pressing time is to the pressurization in furnace
It 5 minutes, should rapidly boost immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is 400
Between DEG C, burn close time at 5 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, and is cooled to solid-state temperature or less to casting
When, it is removed from the molds casting.
Aluminium alloy, including following component in parts by weight: 83.5 parts of aluminium, 2.5 parts of silicon, 4.5 parts of iron, 15 parts of copper, manganese 6
Part, 15 parts of magnesium, 1.5 parts of chromium, 1.5 parts of zinc, 1.5 parts of titanium.
Aluminium powder, including following component in parts by weight: 30 parts of aluminium, 7 parts of aluminium oxide, 1.5 parts of carbon, 3 parts of lithium.
Inert gas is one of helium.
The material of stalk is made of ceramics.
Embodiment 4
The low-pressure casting method for present embodiments providing a kind of aluminium alloy, specifically comprises the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, and high-temperature heating aluminium closes
Gold, heating temperature are 700-750 DEG C, enable aluminum alloy to be melted to molten metal；
The detection of S2 device and preparation: using dismountable mold, surplus using the preceding burning for removing aluminium slag and sand core with air
Excess, then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open mold has
Dislocation-free sealing problem keeps the temperature of furnace between 717.5 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, to keeping furnace to add a certain amount of aluminium powder, 1.75h is sufficiently stirred, then
To the air pressure or inert gas of leading to 0.04Mpa bigger than atmospheric pressure in furnace is kept, realize that pressing time is to the pressurization in furnace
It 6.5 minutes, should rapidly boost immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is 425
Between DEG C, burn close time at 5.5 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, and is cooled to solid-state temperature or less to casting
When, it is removed from the molds casting.
Aluminium alloy, including following component in parts by weight: 84.75 parts of aluminium, 2.75 parts of silicon, 4.75 parts of iron, copper 17.5
Part, 7.5 parts of manganese, 16.5 parts of magnesium, 2 parts of chromium, 1.75 parts of zinc, 1.75 parts of titanium.
Aluminium powder, including following component in parts by weight: 35 parts of aluminium, 7.5 parts of aluminium oxide, 1.75 parts of carbon, 3.5 parts of lithium.
Inert gas is nitrogen, argon gas.
The material of stalk is made of ceramics.
Embodiment 5
The low-pressure casting method for present embodiments providing a kind of aluminium alloy, specifically comprises the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, and high-temperature heating aluminium closes
Gold, heating temperature are 700-750 DEG C, enable aluminum alloy to be melted to molten metal；
The detection of S2 device and preparation: using dismountable mold, surplus using the preceding burning for removing aluminium slag and sand core with air
Excess, then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open mold has
Dislocation-free sealing problem keeps the temperature of furnace between 730 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, and to keeping furnace to add a certain amount of aluminium powder, 2h is sufficiently stirred, then to
The air pressure or inert gas of leading to 0.05Mpa bigger than atmospheric pressure in furnace are kept, is realized to the pressurization in furnace, pressing time 8
Minute, it should rapidly boost immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is 450
Between DEG C, burn close time at 6 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, and is cooled to solid-state temperature or less to casting
When, it is removed from the molds casting.
Aluminium alloy, including following component in parts by weight: 85 parts of aluminium, 3 parts of silicon, 5 parts of iron, 20 parts of copper, 9 parts of manganese, magnesium
18 parts, 2.5 parts of chromium, 2 parts of zinc, 2 parts of titanium.
Aluminium powder, including following component in parts by weight: 40 parts of aluminium, 8 parts of aluminium oxide, 2 parts of carbon, 4 parts of lithium.
Inert gas is nitrogen, argon gas, helium.
The material of stalk is made of ceramics.
Test case
According to the difference of casting technique, pass through machinery, physical property and the casting benefit of aluminium alloy after to casting
Calculated with rate, then analysis of control example and embodiment as a result, reference examples using current low pressure aluminium alloy casting
Method.
Test result see the table below:
According to upper table it can be concluded that, using the low-pressure casting method of aluminium alloy of the invention, the tensile strength of last casting
It is all generally improved with yield strength, highest improves 6.6%, and hardness is also generally higher than reference examples, and highest improves 10.8%, heat
The coefficient of expansion is slightly below reference examples, and casting utilization value is calculated and is also all higher than reference examples 1%-5%, illustrates the aluminium alloy
Low-pressure casting method shrinkage cavity or shrinkage porosite phenomenon are avoided while simplifying complicated technology, improve the machinery and object of casting
Rationality energy increases casting utilization rate.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of low-pressure casting method of aluminium alloy, it is characterised in that: specifically includes the following steps:
The preparation of S1 molten metal: heating furnace is placed under vacuum environment, and aluminium alloy is placed in heating furnace, is heated at high temperature aluminium alloy, is added
Hot temperature is 700-750 DEG C, enables aluminum alloy to be melted to molten metal；
S2 device detection and prepare: use dismountable mold, using it is preceding with air removal aluminium slag and sand core combustion residue,
Then first-class coating is maintained, and checks the air-tightness for keeping furnace, and whether observation cast gate blocks, and detection open-close module has dislocation-free
Sealing problem keeps the temperature of furnace between 680-730 DEG C；
S3 pressurization: molten metal being placed in and is kept in furnace, to keeping furnace to add a certain amount of aluminium powder, 1-2h is sufficiently stirred, then to guarantor
The air or inert gas for leading to 0.01-0.05Mpa bigger than atmospheric pressure in furnace are held, is realized to the pressurization in furnace, pressing time 2-8
Minute, it should rapidly boost immediately when filling type to die tip；
S4 solidification forming: molten metal under pressure, is pressed into mold by stalk, and the temperature of die sinking is in 350-450
Between DEG C, burn close time at 4-6 minutes,
S5 cools down pickup: after molding, pressurization, solidification, the shape of casting is formed, when casting is cooled to solid-state temperature or less,
It is removed from the molds casting.
2. a kind of low-pressure casting method of aluminium alloy according to claim 1, it is characterised in that: the aluminium in S1 step closes
Gold, including following component in parts by weight: 80-85 parts of aluminium, 2-3 parts of silicon, 4-5 parts of iron, 10-20 parts of copper, 3-9 parts of manganese, magnesium
12-18 parts, 0.5-2.5 parts of chromium, 1-2 parts of zinc, 1-2 parts of titanium.
3. a kind of low-pressure casting method of aluminium alloy according to claim 1, it is characterised in that: aluminium in the S3 step
Powder, including following component in parts by weight: 20-40 parts of aluminium, 6-8 parts of aluminium oxide, 1-2 parts of carbon, 2-4 parts of lithium.
4. a kind of low-pressure casting method of aluminium alloy according to claim 1, it is characterised in that: in the S3 step, described
Inert gas is one of nitrogen, argon gas, helium.
5. a kind of low-pressure casting method of aluminium alloy according to claim 1, it is characterised in that: the material of the stalk
It is made of ceramics.
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|---|---|---|---|---|
| DE4332760A1 (en) * | 1993-09-25 | 1995-03-30 | Klaus Doehrer | Method for the operation of a low-pressure metal-casting apparatus and a low-pressure metal-casting apparatus for this purpose |
| CN101497121A (en) * | 2008-01-31 | 2009-08-05 | 上海爱仕达汽车零部件有限公司 | Diesel motor aluminium alloy cylinder metal mould low-pressure casting method |
| JP2012176424A (en) * | 2011-02-25 | 2012-09-13 | Waseda Univ | Low temperature mold and low pressure casting method |
| CN104874766A (en) * | 2015-05-21 | 2015-09-02 | 凤冈县凤鸣农用机械制造有限公司 | Low-pressure casting method of thin-wall aluminum alloy part |
| CN206356564U (en) * | 2017-01-10 | 2017-07-28 | 内蒙古华唐伟业再生资源有限公司 | A kind of low-pressure casting apparatus of aluminium alloy wheel hub |
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2017
- 2017-08-30 CN CN201710762213.1A patent/CN107297484B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4332760A1 (en) * | 1993-09-25 | 1995-03-30 | Klaus Doehrer | Method for the operation of a low-pressure metal-casting apparatus and a low-pressure metal-casting apparatus for this purpose |
| CN101497121A (en) * | 2008-01-31 | 2009-08-05 | 上海爱仕达汽车零部件有限公司 | Diesel motor aluminium alloy cylinder metal mould low-pressure casting method |
| JP2012176424A (en) * | 2011-02-25 | 2012-09-13 | Waseda Univ | Low temperature mold and low pressure casting method |
| CN104874766A (en) * | 2015-05-21 | 2015-09-02 | 凤冈县凤鸣农用机械制造有限公司 | Low-pressure casting method of thin-wall aluminum alloy part |
| CN206356564U (en) * | 2017-01-10 | 2017-07-28 | 内蒙古华唐伟业再生资源有限公司 | A kind of low-pressure casting apparatus of aluminium alloy wheel hub |
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