Film layer preparation method applied to various alloy products

Abstract

The invention relates to the technical field of communication devices, in particular to a film layer preparation method applied to various alloy products, according to the technical scheme, a workpiece is included, and a multi-layer nanoscale composite hard film coating is prepared and generated on the surface of the workpiece through a PVD coating technology; the PVD coating technology preparation and the anodic oxidation technology are combined, the production cost is reduced, and the yield is increased. According to the invention, a dry film coating method for evaporating (ionizing) a film coating material in a certain manner in a vacuum environment through a PVD vacuum film coating technology and depositing and forming a film on a substrate has the characteristics of environmental protection and energy conservation; the composite nano film layer is good in uniformity, conductivity and acid and alkali resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of communication devices, and in particular to a method for preparing a film layer applied to various alloy products. Background Art

[0002] The die-casting cost of various alloy parts is much lower than that of machining, and it is green and environmentally friendly, so it is becoming the first choice of various molding factories.

[0003] In order to improve the effect of die-casting, magnetron sputtering (PVD) technology is used to prepare multi-layer nano-scale composite film layers on its surface, which not only makes processing and molding simpler but also has lower costs than machining. At present, there is no such process in the domestic market. This will bring development trends to the technological development of this industry.

[0004] The prior art also has the following defects during use:

[0005] The surface coloring treatment of die castings in the prior art is mostly electrochemical treatment or painting technology. Since the reaction solution of electrochemical treatment generally contains hexavalent chromium that is harmful to the human body, it does not meet the EU RoSH standard; in addition, the decorative film prepared by painting technology is mostly organic and has a low yield, which affects the performance and appearance of the die castings.

[0006] In view of this, we propose a film preparation method that can be applied to a variety of alloy products to solve the existing problems. Summary of the invention

[0007] The object of the present invention is to provide a method for preparing a film layer applied to various alloy products, so as to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: a method for preparing a film layer applied to various alloy products, comprising a workpiece, wherein a multi-layer nano-scale composite hard film coating is prepared on the surface of the workpiece by PVD coating technology;

[0009] The PVD coating technology preparation is combined with the anodizing process to reduce production costs and improve yield.

[0010] Preferably, the workpieces are all made of easily oxidizable alloys.

[0011] Preferably, the workpiece may be a shape piece of various shapes.

[0012] Preferably, a method for preparing a film layer applied to various alloy products comprises the following specific steps:

[0013] 1. Cleaning before coating: The die-cast products are cleaned in an ultrasonic cleaning line to remove dirt and oil from the surface;

[0014] 2. Polishing: Design suitable tooling and fixtures for the product according to its appearance and shape to polish the product surface;

[0015] 3. Cleaning: Use ultrasonic waves to clean the workpiece again to make the product surface clean;

[0016] 4. Film deposition:

[0017] A. Place the product on the coating jig and put it into the vacuum coating machine to evacuate and heat;

[0018] B. Activate the product surface after reaching a certain vacuum;

[0019] C. After the surface is activated, coating begins according to the process;

[0020] D. Cool down after coating, and release the pressure to take out the product after reaching a certain temperature;

[0021] 5. Packaging: The coated products are vacuum packed.

[0022] Preferably, the composite nano-film layer has good uniformity, good conductivity, and good acid and alkali resistance.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention uses a dry coating method in which the coating material is evaporated (ionized) and deposited on a substrate to form a film under a vacuum environment using PVD vacuum coating technology, which has the characteristics of being green, environmentally friendly and energy-saving.

[0025] 2. The composite nano-film layer of the present invention has good uniformity, good conductivity, and good acid and alkali resistance.

[0026] 3. The nanocomposite film layer of the present invention combined with anodizing has excellent acid and alkali resistance.

[0027] 4. The application of the present invention can use die casting instead of CNC processing to greatly reduce costs, and also solve the problem of low paint yield. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with specific embodiments.

[0029] Embodiment 1

[0030] The present invention proposes a method for preparing a film layer applied to various alloy products, including a workpiece, wherein the surface of the workpiece is prepared by PVD coating technology to generate a multi-layer nano-scale composite hard film coating;

[0031] The film layer preparation method of the present invention is mainly used in the film layer preparation method of alloy products such as magnesium alloy, magnesium-aluminum alloy, die-cast aluminum, magnesium-lithium alloy and the like.

[0032] The preparation process of multi-layer nano-scale composite hard film coating mainly includes vapor deposition technology. Through physical vapor deposition (PVD), the thickness of each layer of material is made at the nanometer level, and the composition and structure of the coating are artificially designed and controlled.

[0033] The combination of PVD coating technology and anodizing process can reduce production costs and improve yield.

[0034] PVD coating technology is used to produce a thin film with high hardness on the surface to improve the wear resistance of the product. The anodizing process is used to form a dense oxide film to avoid corrosion. The combination of the two can improve the overall acid and alkali resistance.

[0035] Furthermore, the workpieces are all made of easily oxidizable alloy parts, which are used to form a dense oxide film through anodizing treatment to improve the overall corrosion resistance.

[0036] Furthermore, the workpiece may be a shape piece of various shapes, and the film preparation method of the present invention is applicable to shape pieces of various shapes.

[0037] Embodiment 2

[0038] The present invention proposes a method for preparing a film layer applied to various alloy products, and the specific steps are as follows:

[0039] 1. Cleaning before coating: The die-cast products are cleaned in an ultrasonic cleaning line to remove dirt and oil from the surface;

[0040] 2. Polishing: Design suitable tooling and fixtures for the product according to its appearance and shape to polish the product surface;

[0041] 3. Cleaning: Use ultrasonic waves to clean the workpiece again to make the product surface clean;

[0042] 4. Film deposition:

[0043] A. Place the product on the coating jig and put it into the vacuum coating machine to evacuate and heat;

[0044] B. Activate the product surface after reaching a certain vacuum;

[0045] C. After the surface is activated, coating begins according to the process;

[0046] D. Cool down after coating, and release the pressure to take out the product after reaching a certain temperature;

[0047] 5. Packaging: The coated products are vacuum packed.

[0048] Furthermore, the composite nano-film layer has good uniformity, good conductivity, and good acid and alkali resistance. The PVD coating technology is used in the preparation process. By precisely controlling process parameters such as temperature, pressure, and time, the uniform deposition of the film layer can be ensured, and the dense film layer can reduce the scattering and obstruction of electron transmission, thereby improving the conductivity. The nano-composite film layer combined with the oxide film formed by anodizing has excellent acid and alkali resistance.

[0049] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A method for preparing a film layer applied to various alloy products, comprising a workpiece, characterized in that: The workpiece surface is prepared by PVD coating technology to generate a multi-layer nano-scale composite hard film coating; The PVD coating technology preparation is combined with the anodizing process to reduce production costs and improve yield.

2. The method for preparing a film layer applied to various alloy products according to claim 1, characterized in that: The workpieces are all made of easily oxidizable alloys.

3. The method for preparing a film layer applied to various alloy products according to claim 1, characterized in that: The workpiece can be a shape piece of various shapes.

4. According to claim 1, a method for preparing a film layer applied to various alloy products, the specific steps are as follows:

1. Cleaning before coating: The die-cast products are placed in an ultrasonic cleaning line for surface decontamination and degreasing.

2. Polishing: Design suitable tooling and fixtures for the product according to its appearance and shape to polish the product surface; 3. Cleaning: Use ultrasonic waves to clean the workpiece again to make the product surface clean; 4. Film deposition: A. Place the product on the coating jig and put it into the vacuum coating machine to evacuate and heat; B. Activate the product surface after reaching a certain vacuum; C. After the surface is activated, coating begins according to the process; D. Cool down after coating, and release the pressure to take out the product after reaching a certain temperature; 5. Packaging: The coated products are vacuum packed.

5. The method for preparing a film layer applied to various alloy products according to claim 1, characterized in that: The composite nano-film layer has good uniformity, good conductivity and good acid and alkali resistance.