Magnesium alloy appearance structure

Abstract

The utility model discloses a magnesium alloy appearance structure which comprises a magnesium alloy base material, an aluminum alloy frame arranged on the periphery of the magnesium alloy base material, a coating layer arranged between the magnesium alloy base material and the aluminum alloy frame, a paint spraying layer arranged on the surface of the magnesium alloy base material and an electrophoresis layer arranged on the surface of the aluminum alloy frame. According to the magnesium alloy appearance structure provided by the utility model, the highlight effect of a product can be improved, and the competitiveness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic product shells, in particular to a magnesium alloy appearance structure. Background Art

[0002] Magnesium alloys have many excellent properties such as low specific gravity, high specific stiffness, good casting performance, machining performance and damping performance. Therefore, they are widely used in automobiles and motorcycles, 3C (computers, communications and consumer electronics), construction hardware, power tools, machinery, aviation, shipbuilding, instruments, toys and other industries.

[0003] In the prior art, magnesium alloy die-casting products are used in products in 3C fields such as electronics and communications. Since the magnesium alloy die-casting structure cannot have a high-gloss appearance, high-temperature powder coating is required and the appearance is relatively simple. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to provide a magnesium alloy appearance structure to optimize the highlight effect of the product.

[0005] Based on the above problems, the technical solution provided by the utility model is:

[0006] A magnesium alloy appearance structure comprises a magnesium alloy substrate, an aluminum alloy frame arranged on the periphery of the magnesium alloy substrate, a coating layer arranged between the magnesium alloy substrate and the aluminum alloy frame, a paint layer arranged on the surface of the magnesium alloy substrate, and an electrophoretic layer arranged on the surface of the aluminum alloy frame.

[0007] In some embodiments, the coating layer is a magnesium alloy coating layer.

[0008] In some embodiments, the coating layer has a thickness of 100 to 160 μm.

[0009] In some embodiments, the thickness of the spray paint layer is 60-100 μm.

[0010] In some embodiments, the electrophoretic layer is a transparent protective layer.

[0011] In some embodiments, the thickness of the electrophoretic layer is 40 to 80 μm.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] The aluminum alloy frame with a coating layer is die-casted into magnesium alloy in a die-casting mold to combine the aluminum alloy frame and the magnesium alloy substrate together. At the same time, a transparent electrophoretic layer is provided on the surface of the aluminum alloy frame to improve the high-gloss appearance of the magnesium alloy product. A paint layer can also be provided on the surface of the magnesium alloy substrate to give the magnesium alloy product a diversified appearance and improve product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of a magnesium alloy appearance structure of the utility model;

[0016] in:

[0017] 1. Magnesium alloy substrate;

[0018] 2. Coating layer;

[0019] 3. Aluminum alloy frame;

[0020] 4. Paint layer;

[0021] 5. Electrophoretic layer. DETAILED DESCRIPTION

[0022] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model and are not limited to the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0023] like Figure 1 As shown, it is a structural schematic diagram of an embodiment of the utility model, which provides a magnesium alloy appearance structure, including a magnesium alloy substrate 1, an aluminum alloy frame 3 arranged on the periphery of the magnesium alloy substrate 1, a coating layer 2 arranged between the magnesium alloy substrate 1 and the aluminum alloy frame 3, a paint layer 4 arranged on the surface of the magnesium alloy substrate 1 and an electrophoretic layer 5 arranged on the surface of the aluminum alloy frame 3.

[0024] The magnesium alloy substrate 1 is a structure obtained by die-casting of the magnesium alloy. The aluminum alloy frame 3 is obtained by extruding the aluminum alloy and is connected to the magnesium alloy substrate 1 through the coating layer 2.

[0025] The coating layer 2 is a magnesium alloy coating layer with a thickness of 100 to 160 μm, which is deposited on the surface of the aluminum alloy frame 3 by a PVD process. The coated aluminum alloy frame 3 is placed in a magnesium alloy mold for magnesium alloy in-mold forming. During magnesium alloy die-casting, the semi-molten magnesium particles will melt and bond with the coating layer on the aluminum alloy frame 3, thereby firmly bonding the magnesium alloy substrate 1 to the aluminum alloy frame 3.

[0026] The function of the spray paint layer 4 is to form a desired appearance effect on the surface of the product, and the thickness is 60-100 μm, for example, forming a high gloss, leather and other effects.

[0027] A transparent electrophoretic layer 5 is formed on the surface of the aluminum alloy frame 3 , and the thickness is 40-80 μm. The transparent electrophoretic layer 5 enables the aluminum alloy frame 3 to have a better highlighting effect than the magnesium alloy after highlighting.

[0028] The manufacturing process of the above-mentioned magnesium alloy appearance structure comprises the following steps:

[0029] S1. Aluminum alloy extrusion raw material: a dense aluminum alloy frame is obtained by extrusion;

[0030] S2. Aluminum alloy frame CNC: The aluminum alloy frame is preliminarily processed by CNC to make it easier to place into the corresponding magnesium alloy die-casting mold, which is convenient for subsequent process operations;

[0031] S3, PVD coating: coating is performed at the position where the aluminum alloy frame needs to be combined with the magnesium alloy, and the coating material is magnesium alloy;

[0032] S4, magnesium alloy die-casting: the coated aluminum alloy frame is placed in a magnesium alloy mold for magnesium alloy in-mold molding. Since the bonding position has been coated with a magnesium alloy coating layer by coating, the semi-molten magnesium particles during magnesium alloy die-casting will be melt-bonded with the coating layer on the aluminum alloy frame, thereby firmly bonding the magnesium alloy substrate to the aluminum alloy frame.

[0033] S5, CNC: Process the combined magnesium alloy substrate + aluminum alloy frame product by CNC;

[0034] S6, Chemical Formation: Chemically treat the product to produce a protective film on the surface of the product, which can effectively improve the strength of the product;

[0035] S7, painting: spray paint the product as the overall appearance of the product, such as high gloss, leather and other effects;

[0036] S8, Highlight cutting: Perform high-gloss cutting on the aluminum alloy frame of the product to make the local appearance of the product present a high-gloss effect;

[0037] S9. Electrophoresis: The entire product is subjected to transparent electrophoresis. Since only the high-gloss cut aluminum alloy frame is exposed, the painted surface of the rest of the area is not conductive and will not be affected by the electrophoresis, and the painted appearance will be maintained. After the electrophoresis process, a transparent protective layer will be generated on the high-gloss surface of the aluminum alloy frame, thereby ensuring that the high-gloss surface has a significantly higher brightness effect than conventional magnesium alloys.

[0038] In summary, the magnesium alloy appearance structure has a high-gloss effect around it, and the surface can present a variety of appearance effects, thereby improving product competitiveness.

[0039] The above examples are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A magnesium alloy appearance structure, characterized in that: The invention comprises a magnesium alloy substrate, an aluminum alloy frame arranged on the periphery of the magnesium alloy substrate, a coating layer arranged between the magnesium alloy substrate and the aluminum alloy frame, a paint layer arranged on the surface of the magnesium alloy substrate and an electrophoretic layer arranged on the surface of the aluminum alloy frame.

2. The magnesium alloy appearance structure according to claim 1, characterized in that: The coating layer is a magnesium alloy coating layer.

3. The magnesium alloy appearance structure according to claim 2, characterized in that: The thickness of the coating layer is 100-160 μm.

4. The magnesium alloy appearance structure according to claim 1, characterized in that: The thickness of the spray paint layer is 60-100 μm.

5. The magnesium alloy appearance structure according to claim 1, characterized in that: The electrophoretic layer is a transparent protective layer.

6. The magnesium alloy appearance structure according to claim 5, characterized in that: The thickness of the electrophoretic layer is 40-80 μm.

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