Patent Application
20210308750
The present invention relates to a bi-metal assembling method and a bi-metal assembled structure.
The present invention relates to a bi-metal assembling method and a bi-metal assembled structure.
The casing/shell of the electronic devices may include a plurality of structural elements. For example, the laptop computer may include display and main body. The display may include upper cover and display main body, while the main body may include keyboard cover and bottom structure. The above mentioned main body and keyboard cover may contain any suitable material.
The casing/shell of the electronic devices, such as casing of portable electronic devices, may be in frequent contact with other objects such as table, user hand, ground, magnesium alloy object such that the casing/shell of the electronic devices may have deformation. The casing/shell may be damaged, the cover paint of the casing/shell may be worn out and the protection layer may be broken due to collision or rub. The metallic object on casing/shell of the electronic devices may be rust-eaten such that it cannot provide protection function and is not appealing for consumer for appearance.
The shell generally adopts magnesium alloy with metallic gross, and the magnesium alloy is formed by electro-plating metal on the magnesium alloy surface to provide alloy with metallic gross. However, the magnesium in the magnesium alloy has high activity to render difficulty to the surface plating process. Therefore, the surface of the magnesium alloy is passivated to reduce activity and the process thereof is complicated.
It is an object of the present invention to provide a bi-metal assembling method and a bi-metal assembled structure.
According to the first aspect of the present invention, a bi-metal assembling method is disclosed and includes providing a machine-shaped aluminum piece. The aluminum piece is placed in die-cast mold, encapsulated by magnesium liquid to fix the machine-shaped aluminum piece, and then die cast is performed such that the magnesium liquid forms a magnesium metal piece. After the bi-metal product (the magnesium metal piece assembled with the machine-shaped aluminum piece) is finished, the bi-metal product is coated for protection. Then the machine-shaped aluminum piece is further processed to form a structure (the structure is aperture or suitable for high gross treated), and then subject to CNC high-gross treatment and anodizing treatment. The coating can be achieved by lacquer coating or oxide layer coating. The magnesium alloy piece is hooked with the machine-shaped aluminum piece. The smooth surface of the product can reduce the time for polishing, the surface shrinkage and the generation of blowholes.
The magnesium liquid encapsulates the machine-shaped aluminum piece and then the magnesium liquid is hardened to form magnesium metal piece or magnesium alloy piece to fix the machine-shaped aluminum piece for die casting.
According to the first aspect of the present invention, a bi-metal assembled structure is disclosed and includes a machine-shaped aluminum piece encapsulated by a magnesium metal piece. The bi-metal product (the magnesium metal piece assembled with the machine-shaped aluminum piece) is coated for protection after assembling. The machine-shaped aluminum piece is processed to form a structure therein and the structure is subject to CNC high-gross treatment and anodizing treatment.
According to the second aspect of the present invention, a bi-metal assembling method is disclosed and includes providing a machine-shaped aluminum piece. The machine-shaped aluminum piece is pre-heated by a heater and then placed into die-cast mold, encapsulated by magnesium liquid to fix the aluminum piece, and then die cast is performed such that the magnesium liquid forms a magnesium metal piece, the magnesium metal piece is directly assembled with the aluminum piece. After the bi-metal product (the magnesium metal piece assembled with the machine-shaped aluminum piece) is finished, the bi-metal product is coated for protection. Then the machine-shaped aluminum piece is formed with a structure therein (the structure is aperture or a structure suitable for high gross treatment) and the structure is subject to CNC high-gross treatment and anodizing treatment. The coating can be achieved by lacquer coating or oxide layer coating. The magnesium alloy piece is directly assembled with the machine-shaped aluminum piece. The smooth surface of the product can reduce the time for polishing, the surface shrinkage and the generation of blowholes. The machine-shaped aluminum piece in this embodiment does not have projection on two sides thereof.
The magnesium/aluminum metal has diffusion assembling (similar to welding) in high temperature, where the heating temperature for aluminum piece is around 450˜500 centigrade. The aluminum metal piece is kept with high temperature in mold such that the magnesium metal piece can be directly assembled with the aluminum metal piece during casting.
The pre-heating temperature for the heater (before placing the machine-shaped aluminum piece into die-cast mold) is 450˜500 centigrade.
According to the second aspect of the present invention, a bi-metal assembled structure is disclosed and includes a machine-shaped aluminum piece encapsulated by a magnesium metal piece, where the magnesium metal piece and the machine-shaped aluminum piece are diffusion assembled in high temperature. The bi-metal product (the magnesium metal piece assembled with the machine-shaped aluminum piece) is coated for protection after assembling. The machine-shaped aluminum piece is processed to form a structure therein (the structure is aperture or a structure suitable for high gross treatment) and the structure is subject to CNC high-gross treatment and anodizing treatment.
The magnesium/aluminum metal has diffusion assembling (similar to welding) in high temperature, where the heating temperature for aluminum piece is around 450˜500 centigrade. The aluminum metal piece is kept with high temperature in mold such that the magnesium metal piece can be directly assembled with the aluminum metal piece during casting.
According to the third aspect of the present invention, a bi-metal assembling method is disclosed and includes providing an aluminum metal piece and a magnesium metal piece. The aluminum metal piece and the magnesium metal piece are separately formed and are subject to nano-treatment on surfaces thereof to form nanostructure on surface thereof. The aluminum metal piece and the magnesium metal piece are placed in the die-cast mold at the same time. Plastic is injected between the aluminum metal piece and the magnesium metal piece to form medium therebetween to assemble the two metal pieces. After the bi-metal product (the magnesium metal piece assembled with the machine-shaped aluminum piece) is finished, the bi-metal product is coated for protection. Then the machine-shaped aluminum piece is formed with a structure therein (the structure is aperture or a structure suitable for high gross treatment) and the structure is subject to CNC high-gross treatment and anodizing treatment. The smooth surface can reduce the time for polishing, the surface shrinkage and the generation of blowholes.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
According to the third aspect of the present invention, a bi-metal assembled structure is disclosed and includes an aluminum metal piece and a magnesium metal piece, where both of the aluminum metal piece and the magnesium metal piece have nano-structure on surface thereof. The aluminum metal piece and the magnesium metal piece have plastic therebetween to function as medium therebetween to assemble the aluminum metal piece and the magnesium metal piece. The aluminum metal piece has a structure therein (the structure is aperture or a structure suitable for high gross treatment) and the structure is subject to CNC high-gross treatment and anodizing treatment.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
According to the fourth aspect of the present invention, a bi-metal assembling method is disclosed and includes providing a machine-shaped aluminum piece. The machine-shaped aluminum piece is subject to nano-treatment on surfaces thereof to form nanostructure on surface thereof. The aluminum piece is placed in a die-cast mold and encapsulated by magnesium liquid to fix the aluminum piece, and then the magnesium liquid is die cast such that the magnesium liquid forms a magnesium metal piece, the magnesium metal piece is directly assembled with the aluminum piece and the nano-structure on the surface of the machine-shaped aluminum piece can increase surface contact area and enhance combining force. After the bi-metal product (the magnesium metal piece assembled with the machine-shaped aluminum piece) is finished, the bi-metal product is coated for protection. The aluminum metal piece has a structure therein (the structure is aperture or a structure suitable for high gross treatment) and the structure is subject to CNC high-gross treatment and anodizing treatment. The smooth surface can reduce the time for polishing, the surface shrinkage and the generation of blowholes.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The nano microstructure has binding force with metal (similar to hook-loop effect) after it is injected.
According to the fourth aspect of the present invention, a bi-metal assembled structure is disclosed and includes an aluminum metal piece and a magnesium metal piece, where the aluminum metal piece has nano-structure on surface thereof. The aluminum metal piece is encapsulated by the magnesium metal piece. The aluminum metal piece and the magnesium metal piece are assembled by the nano-structure on surface of the aluminum metal piece. The aluminum metal piece 41 has a structure (the structure is aperture or a structure suitable for high gross treatment) and the structure is subject to CNC high-gross treatment and anodizing treatment.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
In above embodiments, the material for the aluminum metal alloy and magnesium metal alloy includes aluminum, magnesium, machine-shaped aluminum, aluminum piece, magnesium piece, aluminum metal piece, magnesium metal piece.
In the present invention, the inner wall of the structure of the aluminum metal piece can be subject to CNC high-gross treatment. The two metals can be combined with smooth surface, and the smooth surface can reduce the time for polishing, the surface shrinkage and the generation of blowholes. Besides, the invention also uses plastic, surface with nano-structure or directly assembling two metals to achieve the assembling of the two metals to form bi-metal assembling structure.
Reference will now be made to the drawing Figures to describe the present disclosure in detail. It will be understood that the drawing Figures and exemplified example of present disclosure are not limited to the details thereof.
The present invention has definition for certain processing terms as follows:
CNC Machine
Computer Numerical Control (CNC) machine is an automatic machine with program control system. The control system logically processes program with controlling code or other symbolic command to decode them into coded digits and input the coded digits into numerically-controlled device. The numerically-controlled device processes the coded digits to control manufacturing machine and processes the components automatically according to the designed shape and size. CNC machine can solve the problem of manufacturing components such as complexity, preciseness, small amount and large variety and so on. The CNC machine is a flexible and high-performance automatic machine and is a development trend for modern controlled machine as well as electromechanical integration technology.
High-Gross Machine
The machine is named after the processed product thereof. The appearance of the high-gross machine is similar to the engraving machine (or high-preciseness engraving machine). The spindle of the high-gross machine uses air floating spindle with 100000 RPM to achieve mirror face effect for the machined product thereof, while the knife patterns (HD-400G, HD-540G) are invisible. The current high-gross machine has some alias such as beveling machine, brim-shining machine or chamfer high-grossing machine. The high-gross machine has high demand for technology and has more demanding components then the ordinary engraving machine.
CNC high-gross machine can be used to machine various material such as acrylic, metal hardware, aluminum piece, aluminum material, copper piece and so on, and is suitable for mobile phone frame, mobile phone shell, television shell, high-gross camera focusing hardware, mobile phone button, mobile phone camera, mobile phone middle frame, ring, pendant, speaker, digital camera, 3D complicate metal hardware, metal decoration piece and so on. The high-gross machine can be used to machine can be used to process above products.
The CNC high-gross machine uses specialized knife, suitable cutting parameters and arts to realize shining machined surface arranged on the high-precision CNC equipment.
The magnesium liquid encapsulates the machine-shaped aluminum piece and then the magnesium liquid is hardened to form magnesium metal piece or magnesium alloy piece to fix the machine-shaped aluminum piece for die casting.
The structure is aperture or a structure suitable for high gross treatment.
The machine-shaped aluminum piece has two projections respectively on two lateral sides thereof.
The structure is aperture or a structure suitable for high gross treatment.
The magnesium/aluminum metal has diffusion assembling (similar to welding) in high temperature, where the heating temperature for aluminum piece is around 450˜500 centigrade. The aluminum metal piece is kept with high temperature in mold such that the magnesium metal piece can be directly assembled with the aluminum metal piece during casting.
The structure is aperture or a structure suitable for high gross treatment.
The pre-heating temperature for the heater (before placing the machine-shaped aluminum piece into die-cast mold) is 450˜500 centigrade.
The magnesium/aluminum metal has diffusion assembling (similar to welding) in high temperature, where the heating temperature for aluminum piece is around 450˜500 centigrade. The aluminum metal piece is kept with high temperature in mold such that the magnesium metal piece can be directly assembled with the aluminum metal piece during casting.
The structure is aperture or a structure suitable for high gross treatment.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
The structure is aperture or a structure suitable for high gross treatment.
The plastic is, for example, poly(phenylene sulfide) (PPS), polybutylene terephthalate (PBT), polyamides (PA) or other engineering plastic suitable for injection molding.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
The structure is aperture or a structure suitable for high gross treatment.
The plastic is, for example, poly(phenylene sulfide) (PPS), polybutylene terephthalate (PBT), polyamides (PA) or other engineering plastic suitable for injection molding.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
The structure is aperture or a structure suitable for high gross treatment.
The nano-treatment can be performed by chemical etching or electro-chemistry film forming to form nano microstructure on the surface of the magnesium/aluminum metal piece. The plastic has binding force with metal (similar to hook-loop effect) after it is injected.
The structure is aperture or a structure suitable for high gross treatment.
In above embodiments, the material for the aluminum metal alloy and magnesium metal alloy includes aluminum, magnesium, machine-shaped aluminum, aluminum piece, magnesium piece, aluminum metal piece, magnesium metal piece.
In the present invention, the inner wall of the structure of the aluminum metal piece can be subject to CNC high-gross treatment. The two metals can be combined with smooth surface, and the smooth surface can reduce the time for polishing, the surface shrinkage and the generation of blowholes. Besides, the invention also uses plastic, surface with nano-structure or directly assembling two metals to achieve the assembling of the two metals to form bi-metal assembling structure.
Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the present invention is not limited to the details thereof. Various substitutions and modifications have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the present invention as defined in the appended claims.
