Regionalized configuration method for surface wear resistance protection of magnesium alloy electronic device cabinet

Abstract

The present application belongs to the technical field of electronic equipment, and particularly relates to a regional configuration method for surface wear-resistant protection of a magnesium alloy electronic equipment cabinet. The present application comprises the following steps: S1: cabinet contact interface analysis and region division: according to the properties of the contact object, the relative motion form and the mechanical load characteristics, the contact object is divided into at least three types of functional regions: A type region, B type region and C type region; S2: differential protection strategy matching: for each type of functional region divided in step S1, a preset basic protection strategy and an optimal material form are matched; S3: definition of the cooperativity rules of overall configuration: when the differential strategy in step S2 is applied to the same cabinet, the system-level rules to be followed are defined. The present application provides a regional configuration method for surface wear-resistant protection of a magnesium alloy electronic equipment cabinet, and through establishment of clear region division rules and protection strategy matching rules, optimal configuration of protection resources is achieved.

Description

Technical Field

[0001] This invention belongs to the field of electronic equipment technology, and specifically relates to a method for regionalized configuration of wear-resistant protection on the surface of magnesium alloy electronic equipment chassis. Background Technology

[0002] Magnesium alloys are widely used in electronic equipment enclosures due to their low density, high specific strength, and excellent electromagnetic shielding properties. To ensure their corrosion resistance, protective coatings are formed on the enclosure surface through methods such as micro-arc oxidation, electrophoresis, and painting. However, during actual assembly, transportation, and use, the enclosure coating faces multiple wear risks from various mechanical contact interfaces, mainly including: scratching wear from module insertion and removal on the inner wall of the slot, fretting wear at the bottom caused by equipment vibration, and local compressive stress and scratching wear generated by fastener installation. Coating wear is unavoidable. Where the coating wears, the substrate is exposed, and magnesium alloys have poor corrosion resistance, leading to large-scale corrosion.

[0003] In existing technologies, wear-resistant protection for computer chassis often employs relatively simple or empirical methods, such as universally applying protective tape to easily worn areas or installing general-purpose anti-slip pads. This approach has significant drawbacks: 1. Lack of specificity: The design fails to take into account the differences in wear types, frequencies, and mechanical characteristics experienced by different areas of the chassis. For example, using flexible tape to deal with high-frequency plug-in wear has a limited wear resistance life; using ordinary shims to deal with vibration has poor damping effect.

[0004] 2. Lack of systematic configuration logic: Multiple protective measures may be used simultaneously, but there is a lack of configuration rules based on functional matching between them. This can easily lead to a mismatch between protective measures and wear patterns. For example, using soft materials at points that need to disperse stress or using rigid materials on surfaces that need to absorb vibration can result in poor protective effects or even introduce new problems (such as affecting heat dissipation, grounding, or assembly accuracy).

[0005] 3. Design relies on experience: The selection of protection solutions is highly dependent on the personal experience of designers, making it difficult to form a standardized and reusable design process. This results in unstable protection quality of similar chassis and low design iteration efficiency. Summary of the Invention

[0006] To address the aforementioned problems in the existing technology, the present invention aims to provide a regionalized configuration method for wear-resistant protection of the surface of magnesium alloy electronic device chassis. By establishing clear regional division rules and protection strategy matching rules, the optimal allocation of protection resources can be achieved.

[0007] The technical solution adopted in this invention is as follows: A method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis includes the following steps: S1: Chassis Contact Interface Analysis and Area Division: Analyze all surfaces of the chassis that may have mechanical contact during its service life. Based on the nature of the contact objects, the form of relative motion, and the characteristics of mechanical loads, divide them into at least three functional areas: Area A, Area B, and Area C. Among them, Area A is the dynamic precision fit area, Area B is the system-level load bearing area, and Area C is the discrete point installation and stress concentration area. S2: Differentiated Protection Strategy Matching: For each functional area divided in step S1, match a preset basic protection strategy with a preferred material form. For Class A regions, the matching strategy is to provide an ultra-thin, soft, and self-lubricating insulating and wear-resistant layer; For Class B regions, the matching strategy is to provide an isolation layer with a high damping loss factor, elastic recovery capability, and high wear resistance; For Class C regions, the matching strategy is to provide an interface pad with a certain rigidity to distribute pressure and a wear-resistant surface. S3: Overall Configuration Coordination Rule Definition: Defines the system-level rules that must be followed when applying the differentiated strategies in step S2 to the same chassis, including: installation sequence priority rules, functional interlock rules, and material compatibility basic rules.

[0008] This invention provides a systematic method for scientifically guiding the design of wear-resistant protection for the surface of magnesium alloy electronic device chassis. This method enables simple and mature protective materials to be applied precisely and efficiently to the most suitable locations, thereby achieving optimal overall protection and reliability at the lowest cost.

[0009] As a preferred embodiment of the present invention, the type A region refers to the region that is in direct contact with the metal connecting parts of the pluggable module and is subject to repeated relative sliding. Its characteristic wear mode is sliding or scraping wear with high frequency and low to medium stress amplitude, such as the inner contact surface of various standardized slots.

[0010] As a preferred embodiment of the present invention, the B-type area refers to the area that is in contact with the fixed installation platform or cabinet rail, mainly bearing the weight of the equipment and transmitting external vibrations. Its characteristic wear mode is continuous or periodic surface pressure and fretting wear caused by vibration, typically such as the bottom mounting surface of the chassis.

[0011] As a preferred embodiment of the present invention, the C-type area refers to the area connected to other components through discrete fastening points (such as screws and clips), and its characteristic wear mode is compression wear caused by high local compressive stress, low frequency disassembly and assembly operations, and tool scraping, typically such as the area around screw mounting holes.

[0012] As a preferred embodiment of the present invention, in step S2, for the A-type area, the matching strategy is to provide an ultra-thin, soft, and self-lubricating insulating and wear-resistant layer to directly isolate the sliding contact; the preferred embodiment is a polytetrafluoroethylene or high-performance polyester film liner precisely cut according to the shape of the contact surface.

[0013] As a preferred embodiment of the present invention, in step S2, for the B-type region, the matching strategy is to provide an isolation layer with a high damping loss factor and elastic recovery capability, and high wear resistance, so as to absorb vibration energy and compensate for the unevenness of the contact surface and avoid wear of the bottom coating; the preferred embodiment is a sheet-like silicone rubber or polyurethane elastomer damping pad.

[0014] As a preferred embodiment of the present invention, in step S2, for the C-type region, the matching strategy is to provide an interface pad with a certain rigidity to disperse pressure and a wear-resistant surface; the preferred embodiment is a flat washer or a shaped washer made of nylon, polyoxymethylene or polytetrafluoroethylene.

[0015] As a preferred embodiment of the present invention, in step S3, the installation sequence priority rule is as follows: the installation order is A-type area protective parts, C-type area protective parts, and B-type area protective parts. A-type area protective parts should be pasted on the corresponding parts before the formal assembly of the parts of this type. B-type area protective parts are installed in the last step of the whole machine assembly. B-type area protective parts are most prone to wear after formal delivery. Placing them in the last step does not affect the assembly of other parts. If they are damaged, they can be replaced with minimal assembly cost.

[0016] As a preferred embodiment of the present invention, in step S3, the functional interlocking rule is as follows: the thickness and hardness of the damping pads selected in the B-type area need to be checked in conjunction with the overall rigidity of the chassis. The magnitude of the force transmitted to the slots in the A-type area during transportation, mechanical testing, and actual operation should be minimized to reduce wear on the protective components in the A-type area without affecting the effective locking of the fasteners in the C-type area. If necessary, the thickness of the pads in the A-type area or the stiffness of the gaskets in the C-type area should be adjusted adaptively.

[0017] As a preferred embodiment of the present invention, in step S3, the basic rules of material compatibility are as follows: all protective materials (including their adhesives) that come into direct contact with the magnesium alloy coating must be electrochemically inert materials and must not produce harmful precipitates under long-term use in order to avoid inducing or accelerating contact corrosion, and must be able to withstand environmental adaptability tests such as salt spray, mold, damp heat, mechanical and thermal conditions throughout the entire life cycle of electronic equipment.

[0018] The beneficial effects of this invention are as follows: 1. This invention establishes a scientific and systematic protective design logic: It abandons the rudimentary, experience-based approach of "protecting wherever wear is likely," and innovatively proposes a complete design process encompassing "interface analysis, region division, strategy matching, and rule coordination." This method elevates the wear resistance protection of chassis surfaces from a "material selection problem" to a "systems engineering problem," providing designers with clear and actionable technical guidelines, significantly improving design efficiency and the scientific rigor of the solutions.

[0019] 2. This invention maximizes protective effectiveness and optimizes cost: by precisely matching different types of wear mechanisms with the most suitable protective material properties, each protective material can operate within its performance advantage range. For example, ultra-thin, flexible PTFE membranes are specifically designed to handle fine scratches, offering far superior effectiveness and cost compared to using heavy rubber pads in this area, while also ensuring better assembly precision; while high-damping rubber pads are used to absorb vibrations, with far superior effectiveness compared to rigid plastic pads. This "specialized material for specific purposes" configuration achieves the highest protective effectiveness at the lowest overall cost, avoiding both insufficient and excessive protection.

[0020] 3. This invention achieves inherent synergy between components through configuration rules: The synergy rules defined in this invention ensure that when multiple protective measures are applied on the same chassis, they can form a harmonious and efficient whole, rather than being a collection of independent components. Timing priority rules minimize assembly or replacement costs; functional interlocking rules ensure that the protection of different areas does not interfere with each other, and even supports each other (for example, effective bottom vibration damping can improve the lifespan of slot pads); material compatibility rules guarantee the long-term reliability of the system from the root cause of corrosion prevention. These rules enable the separately implemented protective measures to generate a value-added effect of "system integration".

[0021] 4. This invention improves the manufacturability and maintainability of the product: The protective structure configured based on this method uses standard or easily processed mature materials, and the installation process is simple and clear. The clear rules also standardize the production and assembly process, making quality control easier. During maintenance, because the protection of each area is relatively independent and the reasons for its configuration are clear, problems can be quickly diagnosed and failed components can be replaced accordingly, resulting in high maintenance convenience. Attached Figure Description

[0022] Figure 1 This is a flowchart of the regional configuration method of the present invention; Figure 2 This is a schematic diagram of the protective structure of a magnesium alloy electronic device chassis according to an embodiment of the method of the present invention; Figure 3 yes Figure 2 A schematic diagram of the cutting and attachment of the Class A area protective pad in the embodiment.

[0023] In the diagram: 1-Magnesium alloy electronic device chassis; 2-Electronic module; 3-Standardized slot; 4-Bottom mounting surface; 5-Screw mounting hole; 6-Ultra-thin soft wear-resistant film; 7-Elastic damping anti-wear pad; 8-Rigid / semi-rigid stress dispersion pad; 9-Chassis parts. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the invention can be combined with each other.

[0026] The core process of the method of this invention is as follows: Figure 1 As shown, the process begins with analyzing the chassis contact interface to identify all wear risk points. Then, based on defined standards, these risk points are categorized into three areas: A, B, and C. Next, preset protection strategies and material types are matched to each area. Finally, collaborative rules are applied to verify and optimize the overall configuration.

[0027] Figure 2 An embodiment of a magnesium alloy electronic device chassis applying the method of the present invention is shown. The magnesium alloy electronic device chassis 1 has a surface coating of micro-arc oxidation, electrophoresis, and paint, and houses four electronic modules 2.

[0028] Analysis of the magnesium alloy electronic device chassis 1 revealed the following: Area A: The inner walls and guide grooves of multiple slots, used for repeated insertion and removal of the internal electronic module 2.

[0029] Category B area: Mounting edges on both sides of the bottom of the chassis, used to fix it to the external platform and withstand the main vibrations.

[0030] Area C: Screw mounting holes used for assembling chassis components.

[0031] According to the protection strategy matching rules: For Class A areas (standardized slot 3), the matching strategy is an "ultra-thin, flexible, insulating, and wear-resistant layer." During implementation, a 0.1mm thick flexible PTFE film is selected. For example... Figure 3 As shown, based on the precise three-dimensional contour of the contact surface within the standardized slot 3, the film is cut into individual strips and adhered to the corresponding positions in the standardized slot 3 using epoxy adhesive DG-3. These ultra-thin, flexible, and wear-resistant films 6 can perfectly conform to complex curved surfaces, providing excellent sliding wear resistance and electrical insulation.

[0032] For area B (bottom mounting surface 4), the matching strategy is an "elastic damping isolation layer". During implementation, a 2mm thick silicone rubber sheet with a Shore A hardness of 50 is selected, cut into strips matching the shape of the mounting edge, and fixed with bottom mounting screws. This pad effectively isolates vibrations transmitted from the mounting platform and compensates for unevenness of the mounting surface.

[0033] For area C (screw mounting hole 5), the matching strategy is a "rigid wear-resistant interface layer". In implementation, a nylon flat washer with an outer diameter of 9.2mm, an inner diameter of 4.3mm, and a thickness of 0.5mm is used as a washer and placed under each screw.

[0034] Based on the rules of synergy: Following rule R1 (installation sequence priority), the operation sequence on the production line is as follows: Before formal assembly, precisely attach the PTFE film of the A-type area to the chassis part 9 with slots. Then, during the assembly process, when installing screws, place the nylon washer of the C-type area under the screw flat washer and complete the pre-tightening of all structural screws. In the last step of assembly, install the rubber washer of the B-type area. This minimizes the assembly cost.

[0035] Following rule R2 (functional interlocking), simulation verification shows that under input mechanical excitation, a 2mm thick silicone rubber sheet with a Shore A hardness of 50 can simultaneously meet the requirements of low magnitude of force transmitted to the protective components in the A region and effective locking of the fasteners in the C region.

[0036] In accordance with Rule R3 (Material Compatibility), all silicone rubber sheets, polytetrafluoroethylene films, nylon gaskets, and epoxy adhesive DG-3 that come into direct contact with the magnesium alloy coating are electrochemically inert materials. They do not produce harmful leaching under long-term use and can withstand environmental adaptability tests such as salt spray, mold, damp heat, mechanical and thermal tests throughout the entire life cycle of electronic equipment.

[0037] To verify the superiority of this method, comparative tests were conducted.

[0038] Control group: The traditional experience-based approach was adopted, which involved uniformly applying the same 0.15mm thick polyester protective film to all possible contact areas (slots, bottom, and around screw holes).

[0039] Experimental group (this invention): adopts the differentiated configuration scheme of the above embodiments.

[0040] Test conditions: Comprehensive environmental stress testing was conducted, including: 1000 module insertion / removal cycles; frequency 15-2000Hz, acceleration spectral density 0.04g. 2 Random vibration test at / Hz for 1 hour; 3 temperature cycles (-55℃ to +70℃).

[0041] Test results: Control group: After the above test, the bottom protective film was worn through in multiple places due to fretting wear, and the protective film around some screw holes was cracked due to stress concentration, exposing the coating in many places.

[0042] Experimental group: The bottom elastic damping anti-wear pad 7 showed no visible wear, effectively protecting the coating; the coating under the nylon gasket (rigid / semi-rigid stress dispersion gasket 8) at the screw holes was intact; although the PTFE film inside the slot showed normal signs of use, it did not curl or detach, and remained fully protective. The overall integrity rate of the chassis coating was 100%.

[0043] Example 1: Portable ruggedized magnesium alloy chassis: This embodiment addresses a portable, ruggedized computer chassis that requires frequent outdoor transport and operation. During its service life, the chassis must withstand transportation vibrations, drop impacts, and repeated module insertion and removal.

[0044] Detailed zoning: Area A: In addition to the inner walls of the standardized PCI / PCIe slots, this area also includes the guide keyways on the chassis side walls for mating with rugged I / O connectors. The wear pattern in this area is high-frequency, low-stress sliding, and it is sensitive to clearance (requiring a single-sided clearance ≤0.05mm). Area B: The mounting surfaces of the four rubber vibration-damping feet on the chassis bottom, and the contact surfaces of the locking mechanism for fixing to the vehicle mount. This area bears the weight of the device (approximately 5kg) and a random vibration spectrum of 6.06g RMS. Area C: The M2.5 countersunk screw holes at the chassis shell joints, and the mounting holes for internal board clamping strips. This area has a low disassembly / assembly frequency (approximately 5 times / year), but a relatively high locking torque (0.6N•m).

[0045] Specific implementation of the protection strategy: Area A: Utilizing an ultra-thin 0.05mm polyimide film (PI film), which is more suitable for precision guide keyways due to its higher rigidity and temperature resistance compared to PTFE film. Using precision laser cutting equipment, film gaskets with positioning holes are directly cut from the 3D model and bonded using pressure-sensitive adhesive (acrylate-based). Area B: Selecting a 3mm thick silicone foam pad with a Shore A hardness of 40, whose damping loss factor is greater than 0.3. This pad is die-cut using a mold, and a non-permanent silicone gel is applied to the side in contact with the chassis for replacement after the damping pad ages. Area C: Using injection-molded nylon 66 washers containing molybdenum disulfide, which combine rigidity (tensile strength > 80MPa) and self-lubrication to effectively prevent screw loosening and localized crushing.

[0046] Collaboration Rule Verification: Sequence Rule: First, attach the Type A PI film, then assemble the internal circuit boards and Type C gaskets, and finally place the chassis on the silicone foam pad and lock the external bracket. Interlocking Rule: Finite element simulation calculations confirmed that the static compression of the 3mm thick silicone foam pad under a 5kg load is 0.6mm, and the dynamic compression does not exceed 1.2mm, preventing rigid collision between the chassis bottom and the mounting platform. This compression also does not affect the alignment of insertion and removal in the Type A area. Material Compatibility: The selected PI film, silicone foam, nylon 66, and their adhesives are all free of free halogens, have a neutral pH, and after aging for 1000 hours at 85℃ / 85%RH, no corrosion products are generated at the interface with the magnesium alloy micro-arc oxidation coating.

[0047] Example 2: High-density server chassis: This embodiment relates to a high-density computing server chassis for use in data centers. This chassis operates under constant vibration, and its hard drives, power modules, and other components support hot-swapping.

[0048] Detailed zoning: Area A: SAS / SATA hard drive backplane connector slots and power module slots. Wear pattern: high-frequency (several times daily), low-stress scratching. Area B: Side rails on both sides of the chassis that mate with the rack rails. Withstands continuous surface pressure (chassis full load weight approximately 25kg) and broadband random vibration transmitted by the rack fans. Area C: Front and rear panels of the chassis with mounting holes for handles, indicator light PCBs, and internal fan mounting screw holes.

[0049] Specific implementation of the protection strategy: Area A: 0.125mm thick polyethylene terephthalate (PET) film is used, die-cut and secured with double-sided tape. PET film is more cost-effective and suitable for mass production. Area B: Guide rail sliders are injection-molded from thermoplastic polyurethane (TPU) elastomer. These sliders have high abrasion resistance (wear loss <30mm³) and high elastic recovery rate (>95%), directly replacing the original metal-plastic sliding pairs. Area C: Glass fiber reinforced polyetheretherketone (PEEK) gaskets are used to meet the stringent requirements of high operating temperature (long-term 60℃) and flame retardant rating (UL94 V-0).

[0050] Collaboration Rule Verification: Timing Rule: A-type PET film is pre-attached to the backplate guide groove; internal components are assembled and the C-type PEEK gaskets are locked; finally, the entire chassis is pushed into the cabinet, ensuring the B-type TPU guide rail slider contacts the cabinet guide rail. Interlocking Rule: The impact of TPU materials with different hardnesses (Shore hardness 85A to 60D) on vibration transmission rate is tested. TPU with a Shore hardness of 95A is ultimately selected to ensure effective vibration reduction while avoiding excessive resistance during chassis removal due to excessive elastic deformation. Material Compatibility: All materials are UL environmentally certified, and PEEK and TPU do not release corrosive gases (such as acetic acid and chloride ions) under long-term high temperatures, meeting the high reliability requirements of data centers.

[0051] This embodiment fully demonstrates the effectiveness of the regionalized configuration method provided by this invention. Through scientific analysis, precise matching, and systematic rules, three common protective materials are combined into a highly efficient, reliable, and economical overall protection system, significantly improving the wear resistance of magnesium alloy electronic device chassis and enhancing its durability in harsh operating environments. This method has universal guiding significance and can be extended to the design of various precision metal structures requiring surface protection.

[0052] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.

Claims

1. A method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis, characterized in that: Includes the following steps: S1: Chassis Contact Interface Analysis and Area Division: Analyze all surfaces of the chassis that may have mechanical contact during its service life. Based on the nature of the contact objects, the form of relative motion, and the characteristics of mechanical loads, divide them into at least three functional areas: Area A, Area B, and Area C. Among them, Area A is the dynamic precision fit area, Area B is the system-level load bearing area, and Area C is the discrete point installation and stress concentration area. S2: Differentiated Protection Strategy Matching: For each functional area divided in step S1, match a preset basic protection strategy with a preferred material form. For Class A regions, the matching strategy is to provide an ultra-thin, soft, and self-lubricating insulating and wear-resistant layer; For Class B regions, the matching strategy is to provide an isolation layer with a high damping loss factor, elastic recovery capability, and high wear resistance; For Class C regions, the matching strategy is to provide an interface pad with a certain rigidity to distribute pressure and a wear-resistant surface. S3: Overall Configuration Coordination Rule Definition: Defines the system-level rules that must be followed when applying the differentiated strategies in step S2 to the same chassis, including: installation sequence priority rules, functional interlock rules, and material compatibility basic rules.

2. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: The Class A area refers to the area that is in direct contact with the metal connecting parts of the pluggable module and involves repeated relative sliding. Its characteristic wear mode is sliding or scraping wear with high frequency and low to medium stress amplitude.

3. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: The Class B area refers to the area that comes into contact with the fixed installation platform or cabinet rails, and primarily bears the weight of the equipment and transmits external vibrations. Its characteristic wear mode is continuous or periodic surface pressure and fretting wear caused by vibration.

4. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: The C-type region refers to the area connected to other components via discrete fastening points. Its characteristic wear mode is compression wear caused by high local compressive stress, low frequency disassembly and assembly operations, and tool scraping.

5. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: In step S2, for type A areas, the implementation is a polytetrafluoroethylene or high-performance polyester film gasket precisely cut according to the shape of the contact surface.

6. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: In step S2, for the B-type area, a sheet-like silicone rubber or polyurethane elastomer damping pad is implemented.

7. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: In step S2, for the C-type area, the implementation is a flat gasket or a shaped gasket made of nylon, polyoxymethylene or polytetrafluoroethylene.

8. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: In step S3, the installation sequence priority rule is as follows: the installation order is Class A area protection components, Class C area protection components, and Class B area protection components.

9. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: In step S3, the functional interlocking rule is that the thickness and hardness of the damping pads selected in the B-type area must be checked in conjunction with the overall rigidity of the chassis.

10. The method for regionalized configuration of wear-resistant protection on the surface of a magnesium alloy electronic device chassis according to claim 1, characterized in that: In step S3, the basic rule for material compatibility is: all protective materials that come into direct contact with the magnesium alloy coating must be electrochemically inert and must not produce harmful precipitates under long-term use.

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