CN109454217A - A kind of preparation method of copper-aluminum composite board - Google Patents
A kind of preparation method of copper-aluminum composite board Download PDFInfo
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- CN109454217A CN109454217A CN201811300175.9A CN201811300175A CN109454217A CN 109454217 A CN109454217 A CN 109454217A CN 201811300175 A CN201811300175 A CN 201811300175A CN 109454217 A CN109454217 A CN 109454217A
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- copper
- composite board
- cylinder
- aluminum composite
- carbon fiber
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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
- B22D19/00—Casting in, on, or around objects which form part of the product
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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
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
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- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The present invention relates to a kind of preparation methods of copper-aluminum composite board, casting mould is heated to 980~1020 DEG C, the slightly below melting temperature of copper, the hardness of cylinder is lower at this time, the porous carbon fiber stick for being fixed on cylinder inboard wall will be partially submerged into the inner wall of cylinder under the action of centrifuge, the molten aluminum that volume accounts for cylinder volume 30%~75% is poured into cylinder, molten aluminum will fit in the inner wall of cylinder under the action of centrifuge, it will be in hollow form after molten aluminum cooled and solidified, obtaining internal layer is aluminium sheet, outer layer is the tubular copper-aluminum composite board of copper sheet, it diffuses into one another and connect with copper sheet during cooled and solidified of the molten aluminum under apocarpy, simultaneously in a part insertion copper sheet of porous carbon fiber stick, in aluminium sheet after another part insertion solidification of porous carbon fiber stick, the stable connection at Copper-Aluminum compound interface is substantially improved.
Description
Technical field
The present invention relates to metallic composite field more particularly to a kind of copper-aluminum composite board preparation methods.
Background technique
Copper-aluminum composite board is a kind of novel composite material, has not only had the high thermal conductivity and electric conductivity of copper, but also tool
There is the cheap isometric place of the light of aluminium, price, be commonly used to electronics, electric power, metallurgical equipment, machinery, automobile and other industries, meets pair
Its function and economic demand.Since traditional copper-aluminum composite board is mainly by the side such as explosive welding, soldering, friction welding (FW), flash welding
Method production, technique is backward, yield rate is low and Copper-Aluminum compound interface is easy cracking.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of copper-aluminum composite board system of Copper-Aluminum compound interface stable connection
Preparation Method.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of preparation method of copper-aluminum composite board, comprising the following steps:
S1, metal copper plate is processed into outer diameter cylinder compatible with the intracavitary diameter of the type of casting mould, and by the cylinder
It is embedded in the type chamber of the casting mould；
S2, the inner wall that three or more porous carbon fiber sticks are uniformly fixed on to cylinder along the circumferential direction of cylinder, and will casting
Mold is heated to 980~1020 DEG C；
S3, the molten aluminum that volume is accounted for cylinder volume 30%~75% pour into cylinder, and by the upper end of the casting mould
Casting mould, is placed on centrifuge carries out centrifugal treating later, while the temperature of casting mould is reduced to room by opening sealing
Temperature closes the centrifuge later, obtains tubular copper-aluminum composite board.
The beneficial effects of the present invention are: casting mould is heated to 980~1020 DEG C, the slightly below melting temperature of copper,
The hardness of cylinder is lower at this time, and the porous carbon fiber stick for being fixed on cylinder inboard wall will be partially submerged into cylinder under the action of centrifuge
Inner wall, the molten aluminum that volume accounts for cylinder volume 30%~75% is poured into cylinder, under the action of centrifuge molten aluminum will be bonded
It will be in hollow form after the inner wall of cylinder, molten aluminum cooled and solidified, and obtain the tubular Copper-Aluminum compound that internal layer is aluminium sheet, outer layer is copper sheet
Plate, cooled and solidified of the molten aluminum under apocarpy during diffuses into one another with copper sheet to be connect, while one of porous carbon fiber stick
Divide in insertion copper sheet, in the aluminium sheet after another part insertion solidification of porous carbon fiber stick, keeps the connection at Copper-Aluminum compound interface steady
Solidity is substantially improved.
Detailed description of the invention
Fig. 1 show a kind of flow diagram of copper-aluminum composite board preparation method of the invention.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The most critical design of the present invention is: casting mould is heated to 980~1020 DEG C, it is fixed on the more of cylinder inboard wall
Hole carbon fiber rod will be partially submerged into the inner wall of cylinder under the action of centrifuge, and volume is accounted for the aluminium of cylinder volume 30%~75%
Liquid pours into cylinder, and molten aluminum will fit in the inner wall of cylinder, a part insertion of porous carbon fiber stick under the action of centrifuge
In copper sheet, in the aluminium sheet after another part insertion solidification of porous carbon fiber stick, keep the stable connection at Copper-Aluminum compound interface big
Width is promoted.
It please refers to shown in Fig. 1, a kind of preparation method of copper-aluminum composite board provided by the invention, comprising the following steps:
S1, metal copper plate is processed into outer diameter cylinder compatible with the intracavitary diameter of the type of casting mould, and by the cylinder
It is embedded in the type chamber of the casting mould；
S2, the inner wall that three or more porous carbon fiber sticks are uniformly fixed on to cylinder along the circumferential direction of cylinder, and will casting
Mold is heated to 980~1020 DEG C；
S3, the molten aluminum that volume is accounted for cylinder volume 30%~75% pour into cylinder, and by the upper end of the casting mould
Casting mould, is placed on centrifuge carries out centrifugal treating later, while the temperature of casting mould is reduced to room by opening sealing
Temperature closes the centrifuge later, obtains tubular copper-aluminum composite board.
As can be seen from the above description, casting mould is heated to 980~1020 DEG C, the slightly below melting temperature of copper, cylinder at this time
The hardness of body is lower, and the porous carbon fiber stick for being fixed on cylinder inboard wall will be partially submerged into cylinder under the action of centrifuge
Wall pours into the molten aluminum that volume accounts for cylinder volume 30%~75% in cylinder, and molten aluminum will fit in cylinder under the action of centrifuge
The inner wall of body will be in hollow form after molten aluminum cooled and solidified, obtain the tubular copper-aluminum composite board that internal layer is aluminium sheet, outer layer is copper sheet,
It diffuses into one another and connect with copper sheet during cooled and solidified of the molten aluminum under apocarpy, while porous carbon fiber stick is a part of embedding
Enter in copper sheet, in the aluminium sheet after another part insertion solidification of porous carbon fiber stick, makes the stable connection at Copper-Aluminum compound interface
It is substantially improved.
Further, after S3 further include:
S4, the barrel cutting of the tubular copper-aluminum composite board is opened, obtains sheet copper-aluminum composite board.
Further, after S4 further include:
S5, the sheet copper-aluminum composite board is subjected to rolloff processing, keeps the thickness of the sheet copper-aluminum composite board thinning.
As can be seen from the above description, the sheet copper-aluminum composite board carries out rolloff processing, make the sheet copper-aluminum composite board
While thickness is thinning, the bonding strength at Copper-Aluminum compound interface can be further promoted.
Further, after S5 further include:
S6, the sheet copper-aluminum composite board is placed in progress Hot pressing diffusion processing in hot pressing die.
As can be seen from the above description, Hot pressing diffusion processing makes the copper phase at Copper-Aluminum compound interface and aluminium mutually further diffusion connection.
Further, S401, the sheet copper-aluminum composite board is placed in hot pressing die, hot pressing die is placed in very later
In empty sintering furnace；
S402, vacuumize process is carried out to the vacuum sintering furnace, the temperature in vacuum sintering furnace is increased to 520 later
~560 DEG C, and 8~10MPa is forced into hot pressing die；
S403, the sheet copper-aluminum composite board is kept the temperature 30~60 minutes at 520~560 DEG C.
Further, porous carbon fiber stick surface is deposited with metal nickel layer in S2.
As can be seen from the above description, the nickle atom in metal nickel layer will diffuse into copper phase and aluminium phase, in porous carbon fiber stick
Surrounding forms copper aluminum nickel compound phase, and the bonding strength at Copper-Aluminum compound interface is substantially improved.
Further, the metal nickel layer deposition the following steps are included:
It is cleaned with surface of the alcohol to porous carbon fiber stick, porous carbon fiber stick is put into physical vapour deposition (PVD) later
The nickel carried out 1~3 hour in furnace to the surface of porous carbon fiber stick deposits.
As can be seen from the above description, porous carbon fiber stick is put into progress nickel deposition, obtained gold in physical vapour deposition (PVD) furnace
Category nickel layer thickness is uniform, and the copper aluminum nickel compound phase made is uniformly distributed in around porous carbon fiber stick.
Further, three or more porous carbon fiber sticks are uniformly fixed on to the inner wall of cylinder in S2 along the circumferential direction of cylinder
It include: that cylinder is uniformly fixed on by circumferential direction of the pin by three or more porous carbon fiber sticks along cylinder that material is aluminium alloy
Inner wall.
As can be seen from the above description, the pin that material is aluminium alloy plays the role of being fixed temporarily, by portion after molten aluminum pours into
Divide and is melted in molten aluminum.
Further, S3 includes:
S301, the molten aluminum that volume is accounted for cylinder volume 30%~75% pour into cylinder, and by the upper of the casting mould
End opening sealing；
S302, casting mould is placed on centrifuge to 20~35 points of centrifugal treating for carrying out revolving speed as 1200~1600rpm
Clock, while the temperature of casting mould is reduced to room temperature；
S303, the centrifuge is closed, obtains tubular copper-aluminum composite board.
Further, the molten aluminum is alumel liquid.
It please refers to shown in Fig. 1, the embodiment of the present invention one are as follows:
A kind of preparation method of copper-aluminum composite board, comprising the following steps:
S1, metal copper plate is processed into outer diameter cylinder compatible with the intracavitary diameter of the type of casting mould, and by the cylinder
It is embedded in the type chamber of the casting mould；
S2, the inner wall that three or more porous carbon fiber sticks are uniformly fixed on to cylinder along the circumferential direction of cylinder, and will casting
Mold is heated to 980 DEG C；
Wherein, porous carbon fiber stick surface is deposited with metal nickel layer in S2；
Specifically, the metal nickel layer deposition the following steps are included:
It is cleaned with surface of the alcohol to porous carbon fiber stick, porous carbon fiber stick is put into physical vapour deposition (PVD) later
The nickel carried out 2 hours in furnace to the surface of porous carbon fiber stick deposits；
Specifically, three or more porous carbon fiber sticks are uniformly fixed on to the inner wall packet of cylinder in S2 along the circumferential direction of cylinder
It includes: cylinder is uniformly fixed on by circumferential direction of the pin by three or more porous carbon fiber sticks along cylinder that material is aluminium alloy
Inner wall；
S3, the molten aluminum that volume is accounted for cylinder volume 75% pour into cylinder, and the upper end opening of the casting mould is close
Casting mould, is placed on centrifuge carries out centrifugal treating later, while the temperature of casting mould is reduced to room temperature, later by envelope
The centrifuge is closed, tubular copper-aluminum composite board is obtained；
Wherein, S3 includes:
S301, the molten aluminum that volume is accounted for cylinder volume 75% pour into cylinder, and by the upper end opening of the casting mould
Sealing；
S302, casting mould is placed on centrifuge to centrifugal treating 30 minutes for carrying out revolving speed as 1200rpm, while will casting
The temperature of modeling tool is reduced to room temperature；
S303, the centrifuge is closed, obtains tubular copper-aluminum composite board；
S4, the barrel cutting of the tubular copper-aluminum composite board is opened, obtains sheet copper-aluminum composite board；
S5, the sheet copper-aluminum composite board is subjected to rolloff processing, keeps the thickness of the sheet copper-aluminum composite board thinning；
S6, the sheet copper-aluminum composite board is placed in progress Hot pressing diffusion processing in hot pressing die；
Wherein, S6 includes:
S601, the sheet copper-aluminum composite board is placed in hot pressing die, hot pressing die is placed in vacuum sintering furnace later
It is interior；
S602, vacuumize process is carried out to the vacuum sintering furnace, the temperature in vacuum sintering furnace is increased to 560 later
DEG C, and 8MPa is forced into hot pressing die；
S603, the sheet copper-aluminum composite board is kept the temperature 60 minutes at 560 DEG C.
The embodiment of the present invention two are as follows:
A kind of preparation method of copper-aluminum composite board, comprising the following steps:
S1, metal copper plate is processed into outer diameter cylinder compatible with the intracavitary diameter of the type of casting mould, and by the cylinder
It is embedded in the type chamber of the casting mould；
S2, the inner wall that three or more porous carbon fiber sticks are uniformly fixed on to cylinder along the circumferential direction of cylinder, and will casting
Mold is heated to 1020 DEG C；
Wherein, porous carbon fiber stick surface is deposited with metal nickel layer in S2；
Specifically, the metal nickel layer deposition the following steps are included:
It is cleaned with surface of the alcohol to porous carbon fiber stick, porous carbon fiber stick is put into physical vapour deposition (PVD) later
The nickel carried out 1 hour in furnace to the surface of porous carbon fiber stick deposits；
Specifically, three or more porous carbon fiber sticks are uniformly fixed on to the inner wall packet of cylinder in S2 along the circumferential direction of cylinder
It includes: cylinder is uniformly fixed on by circumferential direction of the pin by three or more porous carbon fiber sticks along cylinder that material is aluminium alloy
Inner wall；
S3, the molten aluminum that volume is accounted for cylinder volume 50% pour into cylinder, and the upper end opening of the casting mould is close
Casting mould, is placed on centrifuge carries out centrifugal treating later, while the temperature of casting mould is reduced to room temperature, later by envelope
The centrifuge is closed, tubular copper-aluminum composite board is obtained；
Wherein, S3 includes:
S301, the molten aluminum that volume is accounted for cylinder volume 50% pour into cylinder, and by the upper end opening of the casting mould
Sealing；
S302, casting mould is placed on centrifuge to centrifugal treating 20 minutes for carrying out revolving speed as 1600rpm, while will casting
The temperature of modeling tool is reduced to room temperature；
S303, the centrifuge is closed, obtains tubular copper-aluminum composite board；
S4, the barrel cutting of the tubular copper-aluminum composite board is opened, obtains sheet copper-aluminum composite board；
S5, the sheet copper-aluminum composite board is subjected to rolloff processing, keeps the thickness of the sheet copper-aluminum composite board thinning；
S6, the sheet copper-aluminum composite board is placed in progress Hot pressing diffusion processing in hot pressing die；
Wherein, S6 includes:
S601, the sheet copper-aluminum composite board is placed in hot pressing die, hot pressing die is placed in vacuum sintering furnace later
It is interior；
S602, vacuumize process is carried out to the vacuum sintering furnace, the temperature in vacuum sintering furnace is increased to 540 later
DEG C, and 10MPa is forced into hot pressing die；
S603, the sheet copper-aluminum composite board is kept the temperature 45 minutes at 540 DEG C.
The embodiment of the present invention three are as follows:
A kind of preparation method of copper-aluminum composite board, comprising the following steps:
S1, metal copper plate is processed into outer diameter cylinder compatible with the intracavitary diameter of the type of casting mould, and by the cylinder
It is embedded in the type chamber of the casting mould；
S2, the inner wall that three or more porous carbon fiber sticks are uniformly fixed on to cylinder along the circumferential direction of cylinder, and will casting
Mold is heated to 1000 DEG C；
Wherein, porous carbon fiber stick surface is deposited with metal nickel layer in S2；
Specifically, the metal nickel layer deposition the following steps are included:
It is cleaned with surface of the alcohol to porous carbon fiber stick, porous carbon fiber stick is put into physical vapour deposition (PVD) later
The nickel carried out 3 hours in furnace to the surface of porous carbon fiber stick deposits；
Specifically, three or more porous carbon fiber sticks are uniformly fixed on to the inner wall packet of cylinder in S2 along the circumferential direction of cylinder
It includes: cylinder is uniformly fixed on by circumferential direction of the pin by three or more porous carbon fiber sticks along cylinder that material is aluminium alloy
Inner wall；
S3, the molten aluminum that volume is accounted for cylinder volume 30% pour into cylinder, and the upper end opening of the casting mould is close
Casting mould, is placed on centrifuge carries out centrifugal treating later, while the temperature of casting mould is reduced to room temperature, later by envelope
The centrifuge is closed, tubular copper-aluminum composite board is obtained；
Wherein, S3 includes:
S301, the molten aluminum that volume is accounted for cylinder volume 30% pour into cylinder, and by the upper end opening of the casting mould
Sealing；
S302, casting mould is placed on centrifuge to centrifugal treating 35 minutes for carrying out revolving speed as 1400rpm, while will casting
The temperature of modeling tool is reduced to room temperature；
S303, the centrifuge is closed, obtains tubular copper-aluminum composite board；
S4, the barrel cutting of the tubular copper-aluminum composite board is opened, obtains sheet copper-aluminum composite board；
S5, the sheet copper-aluminum composite board is subjected to rolloff processing, keeps the thickness of the sheet copper-aluminum composite board thinning；
S6, the sheet copper-aluminum composite board is placed in progress Hot pressing diffusion processing in hot pressing die；
Wherein, S6 includes:
S601, the sheet copper-aluminum composite board is placed in hot pressing die, hot pressing die is placed in vacuum sintering furnace later
It is interior；
S602, vacuumize process is carried out to the vacuum sintering furnace, the temperature in vacuum sintering furnace is increased to 520 later
DEG C, and 9MPa is forced into hot pressing die；
S603, the sheet copper-aluminum composite board is kept the temperature 60 minutes at 520 DEG C.
In conclusion a kind of preparation method of copper-aluminum composite board provided by the invention, casting mould is heated to 980~
1020 DEG C, the slightly below melting temperature of copper, the hardness of cylinder is lower at this time, be fixed on the porous carbon fiber stick of cylinder inboard wall from
It will be partially submerged into the inner wall of cylinder under the action of scheming, the molten aluminum that volume accounts for cylinder volume 30%~75% is poured into cylinder,
Molten aluminum will fit in the inner wall of cylinder under the action of centrifuge, will be in hollow form after molten aluminum cooled and solidified, obtaining internal layer is aluminium
Plate, the tubular copper-aluminum composite board that outer layer is copper sheet, cooled and solidified of the molten aluminum under apocarpy during, diffuse into one another with copper sheet
Connection, while the aluminium in a part insertion copper sheet of porous carbon fiber stick, after another part insertion solidification of porous carbon fiber stick
In plate, the stable connection at Copper-Aluminum compound interface is substantially improved.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (10)
1. a kind of preparation method of copper-aluminum composite board, which comprises the following steps:
S1, metal copper plate is processed into outer diameter cylinder compatible with the intracavitary diameter of the type of casting mould, and the cylinder is embedded in
In the type chamber of the casting mould；
S2, the inner wall that three or more porous carbon fiber sticks are uniformly fixed on to cylinder along the circumferential direction of cylinder, and by casting mould
It is heated to 980~1020 DEG C；
S3, the molten aluminum that volume is accounted for cylinder volume 30%~75% pour into cylinder, and by the upper end opening of the casting mould
Casting mould, is placed on centrifuge carries out centrifugal treating later, while the temperature of casting mould is reduced to room temperature by sealing, it
After close the centrifuge, obtain tubular copper-aluminum composite board.
2. the preparation method of copper-aluminum composite board according to claim 1, which is characterized in that after S3 further include:
S4, the barrel cutting of the tubular copper-aluminum composite board is opened, obtains sheet copper-aluminum composite board.
3. the preparation method of copper-aluminum composite board according to claim 2, which is characterized in that after S4 further include:
S5, the sheet copper-aluminum composite board is subjected to rolloff processing, keeps the thickness of the sheet copper-aluminum composite board thinning.
4. the preparation method of copper-aluminum composite board according to claim 3, which is characterized in that after S5 further include:
S6, the sheet copper-aluminum composite board is placed in progress Hot pressing diffusion processing in hot pressing die.
5. the preparation method of copper-aluminum composite board according to claim 4, which is characterized in that S6 includes:
S601, the sheet copper-aluminum composite board is placed in hot pressing die, hot pressing die is placed in vacuum sintering furnace later；
S602, vacuumize process is carried out to the vacuum sintering furnace, the temperature in vacuum sintering furnace is increased to 520 later~
560 DEG C, and 8~10MPa is forced into hot pressing die；
S603, the sheet copper-aluminum composite board is kept the temperature 30~60 minutes at 520~560 DEG C.
6. the preparation method of copper-aluminum composite board according to claim 1, which is characterized in that porous carbon fiber stick surface in S2
It is deposited with metal nickel layer.
7. the preparation method of copper-aluminum composite board according to claim 6, which is characterized in that the deposition packet of the metal nickel layer
Include following steps:
It is cleaned with surface of the alcohol to porous carbon fiber stick, porous carbon fiber stick is put into physical vapour deposition (PVD) furnace later
1~3 hour nickel deposition is carried out to the surface of porous carbon fiber stick.
8. the preparation method of copper-aluminum composite board according to claim 1, which is characterized in that porous by three or more in S2
Carbon fiber rod along the inner wall that the circumferential direction of cylinder is uniformly fixed on cylinder include: by material be aluminium alloy pin by three or more
Porous carbon fiber stick the inner wall of cylinder is uniformly fixed on along the circumferential direction of cylinder.
9. the preparation method of copper-aluminum composite board according to claim 1, which is characterized in that S3 includes:
S301, the molten aluminum that volume is accounted for cylinder volume 30%~75% pour into cylinder, and the upper end of the casting mould are opened
Mouth sealing；
S302, casting mould is placed on centrifuge to centrifugal treating 20~35 minutes for carrying out revolving speed as 1200~1600rpm, together
When the temperature of casting mould is reduced to room temperature；
S303, the centrifuge is closed, obtains tubular copper-aluminum composite board.
10. the preparation method of copper-aluminum composite board according to claim 1, which is characterized in that the molten aluminum is alumel
Liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811300175.9A CN109454217B (en) | 2018-11-02 | 2018-11-02 | Preparation method of copper-aluminum composite board |
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| CN201811300175.9A CN109454217B (en) | 2018-11-02 | 2018-11-02 | Preparation method of copper-aluminum composite board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182505A (en) * | 2021-04-26 | 2021-07-30 | 中国兵器工业第五九研究所 | Multi-region alloying strengthening preparation method of aluminum alloy casting |
| CN113333709A (en) * | 2021-04-28 | 2021-09-03 | 芜湖磁轮传动技术有限公司 | Centrifugal casting method of conductor rotor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141362A (en) * | 1983-12-29 | 1985-07-26 | Isuzu Motors Ltd | Formation of reinforcing layer of base metal |
| CN105478725A (en) * | 2015-12-23 | 2016-04-13 | 上海交通大学 | Method for preparing bi-metal composite through solid copper solid-liquid composite and extrusion combination |
-
2018
- 2018-11-02 CN CN201811300175.9A patent/CN109454217B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141362A (en) * | 1983-12-29 | 1985-07-26 | Isuzu Motors Ltd | Formation of reinforcing layer of base metal |
| CN105478725A (en) * | 2015-12-23 | 2016-04-13 | 上海交通大学 | Method for preparing bi-metal composite through solid copper solid-liquid composite and extrusion combination |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182505A (en) * | 2021-04-26 | 2021-07-30 | 中国兵器工业第五九研究所 | Multi-region alloying strengthening preparation method of aluminum alloy casting |
| CN113333709A (en) * | 2021-04-28 | 2021-09-03 | 芜湖磁轮传动技术有限公司 | Centrifugal casting method of conductor rotor |
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| CN109454217B (en) | 2020-09-29 |
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