A corrosion-resistant and wear-resistant treatment process and micro-texture design for continuously variable transmission parts

Abstract

The present invention discloses a surface anti-corrosion and wear-resistant treatment process for continuously variable transmission parts. On the surface of a steel plate material after rolling, stamping and other processes, a Ni-W-P coating is first prepared on its surface by a chemical plating method, and then a Cr base layer and a CrNiMoN coating are prepared using a closed-field unbalanced magnetron sputtering ion plating technology. The continuously variable transmission parts of the present invention have a surface treatment layer mainly composed of a Ni-W-P layer, a Cr base layer and an outermost CrNiMoN layer. The side of the part is also designed with a micro-texture in the form of inclined grooves. This design can further reduce the friction loss of the continuously variable transmission parts. Compared with parts without deposited coatings, the surface hardness of the parts after the surface modification treatment by the above process is much greater than 700HV, and the wear resistance and corrosion resistance are also significantly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of corrosion-resistant and wear-resistant surface treatment technology, and in particular to a corrosion-resistant and wear-resistant surface treatment process and micro-texture design of continuously variable transmission parts. Background Art

[0002] In the process of industrial development, materials with high hardness, high wear resistance and corrosion resistance can meet the needs of use in some specific environments, so they have great application prospects.

[0003] As an important component of the metal belt in the continuously variable transmission, the two sides of this part will directly come into friction contact with the two pulleys during the operation of the continuously variable transmission, and will also be subjected to the thrust of the adjacent second part. Therefore, during the long-term operation of the continuously variable transmission, this part will produce friction loss or even breakage. Therefore, the performance of this part directly affects the use of the continuously variable transmission.

[0004] Due to the operating environment of continuously variable transmission parts, the surface of the parts needs to have high hardness and wear resistance, while the core also needs to have a certain degree of toughness. Therefore, the selection of the base material is very important. Steel is selected as the base material. This material has high strength and good fatigue resistance, impact resistance and corrosion resistance, as well as good stamping performance and heat treatment performance. The traditional manufacturing process of continuously variable transmission parts mainly improves the performance of the material through processes such as heat treatment and nitriding. However, heat treatment and nitriding processes are often complex, and the production cycle of nitriding is long, which leads to high costs.

[0005] Surface modification can not only significantly improve the performance of the material, but also has a simple process and low cost to meet the needs of large-scale production. Compared with some traditional processes, improving the performance of materials by surface modification is undoubtedly a very effective and promising method. In order to meet the high hardness and wear resistance requirements of some metal materials, the present invention first uses an electroless plating process to prepare a high-hardness Ni-WP coating on the surface of the metal substrate, and then obtains a CrNiMoN coating by closed-field unbalanced magnetron sputtering ion plating technology to further improve the surface hardness and wear resistance of the substrate.

[0006] Chemical plating is a process in which the main salt ions and the reducing agent undergo an oxidation-reduction reaction on the surface of a catalytically active substrate without external energy input, thereby forming a uniform metal alloy protective layer on the surface of the substrate. Chemical plating has the characteristics of simple process, low cost, energy saving and environmental protection. The coating prepared by chemical plating usually has excellent wear resistance and corrosion resistance. In addition, for workpieces with complex shapes, a uniform and dense coating can also be obtained by chemical plating, and the coating has good bonding with the substrate. Compared with traditional binary alloy chemical plating coatings, the present invention adopts a ternary alloy chemical plating coating with better performance. Compared with Ni-P binary alloy coatings, Ni-WP ternary alloy coatings have higher hardness and better wear resistance, so the present invention adopts Ni-WP coating as the intermediate layer of the metal substrate.

[0007] Physical vapor deposition (PVD) is a commonly used method for surface modification, offering advantages such as simplicity, environmental friendliness, and high-quality film formation. This technology has been widely applied in various fields, producing high-hardness, corrosion-resistant films. PVD includes vacuum evaporation, magnetron sputtering, and multi-arc ion plating. Magnetron sputtering offers high deposition efficiency and repeatability, making it easy to automate production. Transition metal nitrides prepared by magnetron sputtering typically exhibit high hardness and wear resistance.

[0008] Therefore, the present invention uses a CrNiMoN coating as the outermost layer of continuously variable transmission components. This coating features high-hardness CrN and Mo2N phases. The addition of Ni improves the coating's toughness and prevents excessive brittleness. The applicant's literature search has not revealed any application of a composite Ni-WP / CrNiMoN coating for surface modification of continuously variable transmission components. Summary of the Invention

[0009] In order to address the shortcomings of the existing technology, the present invention provides an anti-corrosion and wear-resistant treatment process for continuously variable transmission parts. The anti-corrosion and wear-resistant coating is prepared on the surface of the continuously variable transmission parts after rolling and stamping using chemical plating and magnetron sputtering processes. The preparation process mainly includes two steps: first, a Ni-WP coating is prepared by chemical plating, and then a CrNiMoN coating is prepared by closed-field unbalanced magnetron sputtering ion plating. At the same time, the present invention also provides a Cr primer layer between the outermost CrNiMoN layer and the Ni-WP intermediate layer to improve the bonding strength between the coatings.

[0010] The technical solution of the present invention is:

[0011] A process for treating the surface of a continuously variable transmission component to provide corrosion resistance and wear resistance, comprising sequentially performing chemical plating and magnetron sputtering steps, wherein the chemical plating step forms a Ni-WP intermediate layer on the component surface, and the magnetron sputtering step forms a CrNiMoN layer on the surface of the Ni-WP intermediate layer. The specific steps of the magnetron sputtering are as follows:

[0012] (1) Ultrasonic cleaning: The Ni-WP coated substrate was ultrasonically cleaned in acetone, alcohol, and deionized water for 10-15 min, and then dried;

[0013] (2) Vacuuming: The ultrasonically cleaned substrate was placed in a stainless steel chamber equipped with a high-purity Cr target, a high-purity Mo target, and a Ni-Cr alloy target (80 Ni at.% + 20 Cr at.%). The chamber was evacuated to a vacuum of 2.2 × 10 -5 Torr, thin film deposition in high vacuum;

[0014] (3) Plasma cleaning: High-purity argon gas is introduced into the chamber, and a high bias voltage and a small current are set to perform plasma cleaning on the substrate surface and etching on the target surface. The specific parameters are: Ar flow rate 30-40 sccm, Cr target current 0.3-0.5A, Mo target current 0.3-0.5A, Ni-Cr alloy target current 0.3-0.5A, bias value -400 to -500 V, rotation speed 3-5 rpm, and cleaning time 20-30 min;

[0015] (4) Deposition of CrNiMoN layer: The final CrNiMoN layer was deposited by introducing high-purity nitrogen gas while increasing the current of the Mo target and the Ni-Cr alloy target, wherein the N2 flow rate was 15-30 sccm, the Mo target current was 1-3 A, and the Ni-Cr alloy target current was 1-3 A, for 1.5-2 h;

[0016] (5) Cooling: After all steps are completed, turn off the equipment and leave the CVT parts in the magnetron sputtering equipment and cool for more than 4 hours.

[0017] Preferably, in the surface anti-corrosion and wear-resistant treatment process of the continuously variable transmission, a Cr base layer deposition step is further provided between the plasma cleaning step and the CrNiMoN layer deposition step, specifically: the Cr pure metal layer is deposited by increasing the current of the Cr target while reducing the bias value, wherein the bias voltage is -70V to -80V, the Cr target current is 4-6A, and the current of the Mo target and the Ni-Cr alloy target is kept unchanged for 15-30min.

[0018] Preferably, in the process of treating the surface of continuously variable transmission parts for corrosion resistance and wear resistance, the specific steps of chemical plating are as follows:

[0019] (1) Cleaning: First, the stamped CVT parts were ultrasonically cleaned with acetone, alcohol, and deionized water for 10-15 minutes to remove contaminants on the substrate surface, and then dried in a dust-free environment;

[0020] (2) Alkaline cleaning and degreasing: Place the ultrasonically cleaned parts into the prepared alkaline cleaning solution to remove the unwashed oil stains on the surface of the substrate. The alkaline cleaning time is 25-30 minutes and the temperature is 80-85°C.

[0021] (3) Water washing: Rinse the substrate after alkali washing with deionized water for 30-40 seconds to remove the residual alkali washing solution on the surface of the substrate;

[0022] (4) Pickling activation: The washed substrate is placed in an 8%-10% sulfuric acid solution to remove the oxide film on the substrate surface to obtain an activated surface. The pickling time is 25-30 seconds at room temperature.

[0023] (5) Water washing: Rinse the pickled substrate with deionized water for 30-40 seconds to remove the pickling solution on the surface of the substrate;

[0024] (6) Plating: Plating the activated substrate into the prepared plating solution to obtain the Ni-WP coating;

[0025] (7) Post-plating cleaning: Clean the plated substrate with deionized water and then dry it in a dust-free environment for later use.

[0026] Preferably, in the alkaline washing and oil removal step, the specific formula of the alkaline washing solution is: sodium hypophosphite: 7-8 g / L, sodium hydroxide: 35-40 g / L, sodium carbonate: 20-25 g / L, and sodium silicate: 8-10 g / L.

[0027] Preferably, in the plating step, the specific formula of the plating solution is sodium citrate (complexing agent): 18-20g / L, nickel sulfate hexahydrate (main salt): 18-20g / L, sodium tungstate dihydrate (main salt): 14-16g / L, sodium acetate (buffer): 7-8g / L, thiourea (stabilizer): 1-2mg / L, sodium dodecylbenzenesulfonate (surfactant): 15-20mg / L, sodium hypophosphite (reducing agent): 20-24g / L, the plating temperature is 80-82°C, the pH is 8-8.5, and the plating time is 1.5-2h. The functions of the various chemicals are mainly as follows: the complexing agent prevents precipitation in the plating solution and prolongs the plating solution life; the main salt provides the metal cations required for deposition; the buffer prevents excessive pH changes during the plating process; the stabilizer inhibits spontaneous decomposition of the plating solution; the surfactant accelerates gas escape; and the reducing agent reduces the main salt ions so that they are deposited on the substrate surface. During the plating bath preparation process, the addition of chemicals must be strictly followed in a specific order. All solid chemicals must be completely dissolved before being slowly added to the bath. The specific addition order is to first add the two main salts to the complexing agent, followed by the buffer, stabilizer, surfactant, and finally the reducing agent. The main salts and reducing agent should not be directly mixed during the preparation process, otherwise precipitation may occur or even cause the bath to decompose.

[0028] Preferably, in the surface anti-corrosion and wear-resistant treatment process of continuously variable transmission parts, the steps of cutting the plate, rolling, annealing, blanking, stamping, and deburring are further performed in sequence before the chemical plating step and the magnetron sputtering step, specifically:

[0029] S1 cutting the plate: cutting the plate into several sections for rolling;

[0030] S2 rolling: The cut steel plate is rolled using a high-precision rolling mill to obtain the required thickness. At the same time, the grains are refined through rolling, and the defects of the microstructure are eliminated to make the plate structure denser.

[0031] S3 annealing: The rolled plate is heated to 700-720℃ and then cooled in the furnace to eliminate the internal stress after rolling through annealing treatment;

[0032] S4 blanking: cutting the sheet into strips of required size according to the size of the CVT parts;

[0033] S5 stamping: put the strip into the designed mold for stamping;

[0034] S6 Deburring: Clean the burrs that may be produced after stamping.

[0035] Preferably, in the stamping step, a micro-texture is formed on the side of the part, and the micro-texture is a groove structure obliquely arranged on the side of the part.

[0036] Preferably, the micro-texture is a groove structure, which is composed of a plurality of mutually parallel long strip grooves, and the inclination angle between the long strip grooves and the mounting plane of the part is 10-40°.

[0037] Based on the above process, the present invention manufactures a continuously variable transmission part having a surface coating structure of a Ni-WP intermediate layer and a CrNiMoN layer, and further arranges a Cr base layer between the Ni-WP intermediate layer and the CrNiMoN layer. At the same time, the part also prepares a surface micro-texture on the side during the stamping process.

[0038] The present invention uses electroless plating to prepare a Ni-WP alloy coating, which can also obtain a dense and uniform coating on irregular areas of the metal substrate surface (such as bosses and grooves), thereby greatly improving the material's hardness, wear resistance, and corrosion resistance, while also enhancing the bonding strength between the coatings. Subsequently, a magnetron sputtering method is used to prepare a harder CrNiMoN coating on the Ni-WP-plated surface, further improving the substrate's hardness and wear resistance.

[0039] The present invention has the beneficial effect of modifying the surface of continuously variable transmission components after conventional rolling and stamping processes. Specifically, chemical plating and magnetron sputtering techniques are used in the conventional CVT component manufacturing process to apply a composite coating to the stamped components, thereby improving their performance. Furthermore, the design of the inclined side grooves further reduces friction losses during CVT operation.

[0040] The above-mentioned method of depositing a coating on the surface of a metal substrate using chemical plating technology and magnetron sputtering technology is also applicable to some other metal substrates besides continuously variable transmission parts, so as to improve the hardness, wear resistance and corrosion resistance of the metal substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the working principle of a continuously variable transmission;

[0042] Figure 2 A schematic diagram of the structure of the continuously variable transmission parts and the metal belt, as well as a partial enlarged view of the groove on the side of the part;

[0043] Figure 3 Prepare process flow chart for CVT parts;

[0044] Figure 4 Schematic diagram of the coating deposition process;

[0045] Figure 5 This is a coating structure diagram of a continuously variable transmission part;

[0046] Figure 6 This is a comparison chart of the hardness of the continuously variable transmission component substrate, Ni-WP coating, and Ni-WP / CrNiMoN coating;

[0047] Figure 7 Surface morphology of Ni-WP coating and Ni-WP / CrNiMoN coating;

[0048] Explanation of the numbers in the accompanying drawings: 1-driving wheel, 2-metal belt, 3-driven wheel, 4-continuously variable transmission parts, 5-steel ring, 6-plate, 7-Ni-WP intermediate layer, 8-Cr base layer, 9-CrNiMoN layer. DETAILED DESCRIPTION

[0049] The specific implementation method of the present invention is further described below with reference to the accompanying drawings:

[0050] like Figure 1 and Figure 2As shown, the main principle of a continuously variable transmission (CVT) is to transmit power between a driving pulley and a driven pulley with a variable working diameter via a metal belt, thereby achieving a continuously variable transmission ratio. The metal belt primarily consists of several hundred CVT components and a dozen flexible steel rings secured to the shaft shoulder of the component. During operation, the lateral movement of the driving pulley controls the transmission ratio between the driving and driven pulleys, thus achieving a continuously variable transmission. The lateral movement of the driving pulley causes friction against the side surfaces of the component, so CVT components must have high surface hardness and wear resistance, while the core must have a certain degree of toughness to prevent fracture during lateral movement of the driving shaft.

[0051] Preferably, in the present invention, the micro-texture (groove) on the side of the continuously variable transmission part is designed to be inclined, wherein the inclination angle is 20°, the width of the groove is 0.12 mm, and the spacing between the grooves is 0.06 mm. Through the design of this inclined groove, more lubricating oil can be stored in the groove, thereby reducing the friction loss between the metal belt and the pulley of the continuously variable transmission, and at the same time avoiding the occurrence of jamming during the speed change process of the continuously variable transmission.

[0052] like Figure 3 As shown, the following are the specific process steps for manufacturing continuously variable transmission parts:

[0053] S1 cutting the plate: cutting the plate into several sections for rolling;

[0054] S2 rolling: The cut steel plate is rolled using a high-precision rolling mill to obtain the required thickness. At the same time, rolling can refine the grains, eliminate microstructural defects and make the plate structure denser.

[0055] S3 annealing: The rolled plate is heated to 700-720℃ and then cooled in the furnace to eliminate the internal stress after rolling through annealing treatment;

[0056] S4 blanking: cutting the sheet into strips of required size according to the size of the CVT parts;

[0057] S5 stamping: put the strip into the designed mold for stamping;

[0058] S6 Deburring: Clean the burrs that may be produced after stamping.

[0059] Preferably, in the stamping step, the groove on the side of the continuously variable transmission part is designed to be inclined.

[0060] The present invention adds chemical plating and magnetron sputtering steps after the stamping and deburring processes. The specific operation method of the chemical plating step is as follows:

[0061] (1) Cleaning: First, the stamped CVT parts were ultrasonically cleaned for 15 min using acetone, alcohol, and deionized water to remove impurities and contaminants on the substrate surface, and then dried in air;

[0062] (2) Alkaline cleaning and degreasing: Place the ultrasonically cleaned substrate into the prepared alkaline cleaning solution to remove the remaining oil stains on the substrate surface. The alkaline cleaning time is 30 minutes and the temperature is 85°C. The specific formula of the alkaline cleaning solution is sodium hypophosphite: 7g / L, sodium hydroxide: 40g / L, sodium carbonate: 25g / L, sodium silicate: 10g / L;

[0063] (3) Water washing: The substrate after alkali washing was rinsed with deionized water for 40 seconds to remove the residual alkali washing solution on the surface of the substrate;

[0064] (4) Pickling activation: The washed substrate is placed in a 10% sulfuric acid solution to remove the surface oxide film to obtain an activated surface. The pickling time is 30 seconds at room temperature.

[0065] (5) Water washing: The acid-washed substrate was rinsed with deionized water for 40 seconds to remove the residual alkaline solution on the substrate surface;

[0066] (6) Plating: The washed substrate is placed in a prepared plating solution for plating for 2 hours to obtain a Ni-WP coating. The specific formula of the plating solution is sodium citrate: 20 g / L, nickel sulfate hexahydrate: 20 g / L, sodium tungstate: 16 g / L, sodium acetate: 8 g / L, thiourea: 2 mg / L, sodium dodecylbenzenesulfonate: 20 mg / L, sodium hypophosphite: 24 g / L, the temperature is 80°C, and the pH is 8.

[0067] (7) Post-plating cleaning: Rinse the plated substrate with deionized water and then dry it in the air for later use.

[0068] The specific steps of the magnetron sputtering are:

[0069] (1) Ultrasonic cleaning: The Ni-WP coated substrate was ultrasonically cleaned in acetone, alcohol, and deionized water for 15 min, and then dried.

[0070] (2) Vacuuming: The ultrasonically cleaned substrate was placed in a stainless steel chamber equipped with a high-purity Cr target, a high-purity Mo target, and a Ni-Cr alloy target (80 Ni at.% + 20 Cr at.%). The chamber was evacuated to a vacuum of 2.2 × 10 -5 Torr;

[0071] (3) Plasma cleaning: High-purity argon gas is introduced into the chamber, and a high voltage and low current are set to perform plasma cleaning on the substrate surface and etching on the target surface. Specific parameters are: Ar flow rate of 40 sccm, Cr target current of 0.3 A, Mo target current of 0.3 A, Ni-Cr alloy target current of 0.3 A, bias value of -500 V, rotation speed of 4 rpm, and cleaning time of 30 min.

[0072] (4) Deposition of Cr base layer: The Cr base layer was deposited by increasing the current of the Cr target while decreasing the bias voltage. The bias voltage was -80 V, the Cr target current was 5 A, and the currents of the Mo target and Ni-Cr alloy target were kept constant for 30 min.

[0073] (5) Deposition of CrNiMoN layer: The final CrNiMoN layer was deposited by introducing high-purity nitrogen gas while increasing the current of the Mo target and the Ni-Cr alloy target. The N2 flow rate was 20 sccm, the Mo target current was 2 A, the Ni-Cr alloy target current was 2 A, and the time was 2 h.

[0074] (6) Cooling: After all steps are completed, turn off the equipment and leave the CVT parts in the magnetron sputtering equipment and cool for 4 hours.

[0075] like Figure 4 、 Figure 5 As shown, the present invention combines chemical plating technology and magnetron sputtering technology to deposit a Ni-WP / CrNiMoN multilayer coating on the surface of the continuously variable transmission part after stamping, so that the part has higher hardness and better corrosion resistance.

[0076] Performance comparison: Generally, hardness value is positively correlated with wear resistance. Under the same working environment, the higher the hardness of the material, the better its wear resistance. Therefore, the Vickers hardness test (load 1.962N) was performed on the raw materials of the continuously variable transmission parts, the parts after chemical plating and the parts after magnetron sputtering and compared. In order to ensure the accuracy of the test results, each sample was measured three times and the average value was taken. The test results are as follows: Figure 6 As shown in the figure, the hardness of the CVT part without surface modification is 180HV. After electroless Ni-WP plating, the hardness of the part increases significantly to 685HV, but still does not reach 700HV. After electroless plating and magnetron sputtering, the hardness of the CVT part reaches 1027HV, which fully meets the use requirements of the part. Figure 7 As shown in the figure, after adding CrNiMoN coating on Ni-WP coating, the surface is dense and the appearance is beautiful.

[0077] In summary, the present invention is prepared through chemical plating process and closed-field unbalanced magnetron sputtering ion plating process and applied to the surface modification treatment of continuously variable transmission parts. The continuously variable transmission parts treated by this method have higher hardness and wear resistance, and can better meet the requirements of long-term use of the continuously variable transmission.

[0078] It should be noted that the above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Equivalent modifications made based on the above embodiments fall within the scope of protection of the present invention.

Claims

1. A process for treating the surface of continuously variable transmission parts to prevent corrosion and resist wear, characterized in that: The process includes chemical plating and magnetron sputtering steps performed sequentially, wherein the chemical plating step forms a Ni-WP intermediate layer on the surface of the part, and the magnetron sputtering step forms a CrNiMoN layer on the surface of the Ni-WP intermediate layer. The specific steps of the magnetron sputtering are as follows: (1) Ultrasonic cleaning: The Ni-WP coated substrate was ultrasonically cleaned in acetone, alcohol, and deionized water for 10-15 min, and then dried; (2) Vacuuming: The ultrasonically cleaned substrate was placed in a stainless steel chamber equipped with a high-purity Cr target, a high-purity Mo target, and a Ni-Cr alloy target. The chamber was evacuated to a vacuum degree of 2.2×10 -5 Torr; (3) Plasma cleaning: High-purity argon gas is introduced into the chamber, and a high bias voltage and a small current are set to perform plasma cleaning on the substrate surface and etching on the target surface. The specific parameters are Ar flow rate of 30-40 sccm, Cr target current of 0.3-0.5A, Mo target current of 0.3-0.5A, Ni-Cr target current of 0.3-0.5A, bias value of -400 to -500V, rotation speed of 3-5rpm, and cleaning time of 20-30min; (4) Deposition of CrNiMoN layer: The final CrNiMoN layer was deposited by introducing high-purity nitrogen gas while increasing the current of the Mo target and the Ni-Cr alloy target, wherein the N2 flow rate was 15-30 sccm, the Mo target current was 1-3 A, and the Ni-Cr alloy target current was 1-3 A, for 1.5-2 h; (5) Cooling: After all steps are completed, turn off the equipment and leave the CVT parts in the magnetron sputtering equipment and cool for more than 4 hours.

2. The process for treating the surface of a continuously variable transmission component for corrosion and wear resistance according to claim 1, characterized in that: A Cr base layer deposition step is also provided between the plasma cleaning step and the CrNiMoN layer deposition step, specifically: a Cr pure metal layer is deposited by increasing the current of the Cr target while reducing the bias value, wherein the bias voltage is -70V to -80V, the Cr target current is 4-6A, and the current of the Mo target and the Ni-Cr alloy target is kept constant for 15-30 minutes.

3. The process for treating the surface of a continuously variable transmission component for corrosion and wear resistance according to claim 1, characterized in that: The specific steps of chemical plating are as follows: (1) Cleaning: First, the stamped CVT parts were ultrasonically cleaned with acetone, alcohol, and deionized water for 10-15 minutes to remove contaminants on the substrate surface, and then dried in a dust-free environment; (2) Alkaline cleaning and degreasing: Place the ultrasonically cleaned parts in the prepared alkaline cleaning solution to remove the unwashed oil stains on the surface of the substrate at a temperature of 80-85°C for 25-30 minutes; (3) Water washing: Rinse the substrate after alkali washing with deionized water for 30-40 seconds to remove the residual alkali washing solution on the surface of the substrate; (4) Pickling activation: Place the washed substrate in 8%-10% sulfuric acid solution to remove the surface oxide film to obtain an activated surface. The pickling time is 25-30 seconds at room temperature. (5) Water washing: Rinse the pickled substrate with deionized water for 30-40 seconds to remove the pickling solution on the surface of the substrate; (6) Plating: Plating the activated substrate into the prepared plating solution to obtain the Ni-WP coating; (7) Post-plating cleaning: Clean the plated substrate with deionized water and then dry it in a dust-free environment for later use.

4. The process for treating the surface of a continuously variable transmission component for corrosion and wear resistance according to claim 3, characterized in that: In the alkaline washing and oil removal step, the specific formula of the alkaline washing solution is: sodium hypophosphite: 7-8 g / L, sodium hydroxide: 35-40 g / L, sodium carbonate: 20-25 g / L, and sodium silicate: 8-10 g / L.

5. The process for treating the surface of a continuously variable transmission component for corrosion and wear resistance according to claim 3, characterized in that: In the plating step, the specific formula of the plating solution is sodium citrate: 18-20 g / L, nickel sulfate hexahydrate: 18-20 g / L, sodium tungstate dihydrate: 14-16 g / L, sodium acetate: 7-8 g / L, thiourea: 1-2 mg / L, sodium dodecylbenzenesulfonate: 15-20 mg / L, sodium hypophosphite: 20-24 g / L, the plating temperature is 80-82°C, the pH is 8-8.5, and the plating time is 1.5-2 hours.

6. The process for treating the surface of a continuously variable transmission component for corrosion resistance and wear resistance according to claim 1, characterized in that: Before the chemical plating step and the magnetron sputtering step, the steps of cutting the plate, rolling, annealing, blanking, stamping, and deburring are also included in sequence, specifically: S1 cutting the plate: cutting the plate into several sections for rolling; S2 rolling: The cut steel plate is rolled using a high-precision rolling mill to obtain the required thickness. At the same time, the grains are refined through rolling, and the defects of the microstructure are eliminated to make the plate structure denser. S3 annealing: The rolled plate is heated to 700-720℃ and then cooled in the furnace to eliminate the internal stress after rolling through annealing treatment; S4 blanking: cutting the sheet into strips of required size according to the size of the part; S5 stamping: put the strip into the designed mold for stamping; S6 Deburring: Clean the burrs that may be produced after stamping.

7. The process for treating the surface of a continuously variable transmission component for corrosion resistance and wear resistance according to claim 6, characterized in that: During the stamping step, a micro-texture is formed on the side of the part, and the micro-texture is a groove structure obliquely arranged on the side of the part.

8. The process for treating the surface of a continuously variable transmission component for corrosion resistance and wear resistance according to claim 7, characterized in that: The micro-texture is a groove structure, which is composed of a plurality of mutually parallel long strip grooves, and the inclination angle between the long strip grooves and the mounting plane of the part is 10-40°.

9. A continuously variable transmission component, characterized in that: The part has a surface coating structure produced by the treatment process according to any one of claims 1-6.

10. A continuously variable transmission component, characterized in that: The part has a surface micro-texture produced by the treatment process described in claim 7 or 8.

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