Abstract: A method for producing an outer shell includes steps of a) stacking a second plate on a first plate, the second plate having an accommodation space that is recessed toward the first plate; b) disposing a filling material in the accommodation space; c) stacking a third plate on the second plate so as to cover the filling material and to form a composite structure; and d) stamping the composite structure such that a peripheral portion of the composite structure is bent, thereby forming an outer shell. In step b), a weight of the filling material is lower than that of the first plate, that of the second plate, and that of the third plate, or rigidity of the filling material is higher than that of the first plate, that of the second plate, and that of the third plate.

Abstract: A method for forming a two-color coating layer includes steps of: a) conducting a coating process by applying a coating layer on a workpiece having a stepped surface, so that the coating layer having a first color is formed on the stepped surface, the stepped surface having a lower region, an upper region, and a middle shoulder region; b) forming an ink layer that has a second color and that covers the coating layer; c) soft baking the ink layer; d) exposing to light a first area of the ink layer so that the first area undergoes a crosslinking reaction; e) developing the ink layer so that a second area of the ink layer is removed; and f) hard baking the ink layer, wherein the stepped surface has the second color formed on the lower and middle shoulder regions, and the first color formed on the upper region.

Abstract: A method for combining heterogeneous metal parts includes steps of: a) disposing a first metal part in a mold cavity of a lower mold, the first metal part including a bottom portion, a vertical portion, and an extension portion; b) disposing a first upper mold on the upper surface of the extension portion of the first metal part; c) before or after step a), providing a bonding adhesive on the bottom portion of the first metal part; and d) after steps a), b), and c), pressing a second metal part downwardly to force a lower surface of second metal part to press against the bonding adhesive.

Abstract: A method for combining heterogeneous metal parts includes steps of: a) disposing a first metal part and a second metal part in a lower mold cavity of a lower mold, the lower mold cavity having a lower portion and an upper portion, the lower mold including a channel that communicates with an external environment; b) combining an upper mold and the lower mold with an upper mold cavity of the upper mold facing the lower mold cavity, the upper mold cavity being defined by an inner base surface and an inner surrounding surface; and c) injecting a bonding adhesive into the channel so as to fill the lower portion of the lower mold cavity and a gap between the first metal part and the second metal part with the bonding adhesive.

Abstract: A method for molding a composite component, which includes step (a) of providing a forming mold and a preformed substrate, in which the forming mold includes a lower mold and an upper mold matched with each other; step (b) of disposing the preformed substrate into an accommodating space, and clamping the upper mold against the lower mold such that a mold cavity is formed between the preformed substrate and the upper mold; step (c) of injecting a polymer material into the mold cavity from a sprue of the upper mold under an injecting pressure, while pushing the preformed substrate by the polymer material which is formed by the injecting pressure, thereby forming a first deformed portion; and step (d) of further clamping the upper mold against the lower mold using a molding pressure, while pushing the polymer material and the first deformed portion, thereby obtaining a semi-finished product.

Abstract: A method for manufacturing a composite structure having first and second structural members includes the steps of: (A) placing a plate in a forming mold having a first molding member, and a second molding member with an injection hole; (B) moving the first molding member toward the second molding member to stamp and deform the plate; (C) injecting a molten substrate onto the plate via the injection hole to stamp and deform again the plate so as to form the first structural member; (D) removing an assembly of the first structural member and a solidified substrate from the first molding member; and (E) removing an excess part of the solidified substrate to form the second structural member.

Abstract: A method for coating a substrate includes the steps of: forming a conductive coating layer on a surface of a substrate so as to form a semi-product; submerging a conductive sheet and the semi-product into an electrophoresis medium that includes charged colloid particles; and applying a voltage on the conductive sheet or the semi-product to form an electric field among the conductive sheet, the semi-product, and the electrophoresis medium, so that the colloid particles move along the electric field toward the semi-product and an electrophoretic covering layer formed by the charged colloid particles is thus deposited on the electrophoretic covering layer.

Abstract: The present invention provides a surface treatment method for magnesium alloy object, the method comprising: providing a magnesium alloy object; preprocessing the magnesium alloy object; performing micro-arc oxidation (MAO) treatment on the magnesium alloy object to form a micro-arc oxidation layer; Sputtering at least one metal layer or at least one non-metal layer on a surface of the micro-arc oxidation layer, the metal layer or non-metal layer which is sputtered on the micro-arc oxidation layer has different angles by using surface roughness of the micro-arc oxidation layer when a light source is projected on the metal layer or non-metal layer; and Sputtering a paint layer on the metal layer or non-metal layer to make the surface metallic lustrous and corrosion-resistant. The present invention further provides a surface structure of a magnesium alloy object.

Abstract: A method for coating a substrate includes the steps of: forming a conductive coating layer on a surface of a substrate so as to form a semi-product; submerging a conductive sheet and the semi-product into an electrophoresis medium that includes charged colloid particles; and applying a voltage on the conductive sheet or the semi-product to form an electric field among the conductive sheet, the semi-product, and the electrophoresis medium, so that the colloid particles move along the electric field toward the semi-product and an electrophoretic covering layer formed by the charged colloid particles is thus deposited on the electrophoretic covering layer.

Abstract: A method for manufacturing a composite structure having first and second structural members includes the steps of: (A) placing a plate in a forming mold having a first molding member, and a second molding member with an injection hole; (B) moving the first molding member toward the second molding member to stamp and deform the plate; (C) injecting a molten substrate onto the plate via the injection hole to stamp and deform again the plate so as to form the first structural member; (D) removing an assembly of the first structural member and a solidified substrate from the first molding member; and (E) removing an excess part of the solidified substrate to form the second structural member.

Abstract: A composite structure includes a passivated substrate, a sealing layer, a conductive layer, and a coating layer. The passivated substrate includes a substrate body made of a metallic material that is magnesium or magnesium alloy, and a porous passivation layer which is disposed on the substrate body, and which is made of an oxide of the metallic material. The sealing layer is disposed on the porous passivation layer, and is made of a sealing material. The conductive layer is disposed on the sealing layer, and is made of an electrically conductive material. The coating layer covers the conductive layer, and includes an electrophoretic material and/or a metal. A method of making the composite structure is also disclosed.

Abstract: The present invention provides a surface treatment method for magnesium alloy object, the method comprising: providing a magnesium alloy object; preprocessing the magnesium alloy object; performing micro-arc oxidation (MAO) treatment on the magnesium alloy object to form a micro-arc oxidation layer; Sputtering at least one metal layer or at least one non-metal layer on a surface of the micro-arc oxidation layer, the metal layer or non-metal layer which is sputtered on the micro-arc oxidation layer has different angles by using surface roughness of the micro-arc oxidation layer when a light source is projected on the metal layer or non-metal layer; and Sputtering a paint layer on the metal layer or non-metal layer to make the surface metallic lustrous and corrosion-resistant. The present invention further provides a surface structure of a magnesium alloy object.

Abstract: The present invention provides a bi-metal assembling method. The method provides a machine-shaped aluminum piece and places the machine-shaped aluminum piece into a die-cast mold. The machine-shaped aluminum piece is encapsulated with a magnesium metal liquid and die cast is performed. The assembled bi-metal structure is coated for protection and CNC high-gross treatment and anodizing treatment is performed in the machine-shaped aluminum piece. The magnesium alloy piece is hooked with the machine-shaped aluminum piece for assembling. The bi-metal structure has smooth surface to reduce the time for polishing, surface shrinkage and generation of blowholes. The present invention also provides a bi-metal assembled structure.

Abstract: A high-gross manufacturing method for magnesium alloy object includes providing a magnesium alloy object; performing micro-arc oxidation or conversion coating treatment on the magnesium alloy object to form oxide film on a surface of the magnesium alloy object; spraying a paint layer on MAO-treated or conversion coating-treated surface of the magnesium alloy object to protect the magnesium alloy object; performing CNC high gross cutting to cut away part of paint layer and part of the oxide film to expose metallic main body; using specific conversion coating solution to passivate the magnesium alloy object; and spraying UV curable paint on the surface of the magnesium alloy object to provide corrosion protection. The present invention also provides a high-gross magnesium alloy structure.