High-strength corrosion-resistant stainless steel wire and production method thereof

Abstract

The invention relates to the technical field of stainless steel wire manufacturing, in particular to a high-strength corrosion-resistant stainless steel wire and a production method thereof.The high-strength corrosion-resistant stainless steel wire comprises, by mass, 0.05%-0.15% of carbon (C), 0.5%-1.5% of silicon (Si), 1.0%-2.0% of manganese (Mn), smaller than or equal to 0.03% of phosphorus (P), smaller than or equal to 0.02% of sulfur (S), 16.0%-18.0% of chromium (Cr), 8.0%-10.0% of nickel (Ni), 2.0%-3.0% of molybdenum (Mo), 0.5%-1.5% of copper (Cu), 0.05%-0.15% of nitrogen (N), 0.1%-0.3% of niobium (Nb), 0.05%-0.15% of titanium (Ti) and the balance stainless steel. And the balance of iron (Fe) and impurities. By optimizing the alloy component design, the carbon content is controlled to be 0.05%-0.15%, and corrosion resistance is prevented from being reduced while it is guaranteed that the strength is improved; the chromium content is 16.0%-18.0% to ensure that a compact chromium oxide protective film is formed, the molybdenum content is 2.0%-3.0% to enhance pitting corrosion and crevice corrosion resistance, and nickel, copper and other elements have a synergistic effect, so that the stainless steel wire is free of obvious corrosion after a salt spray test, and the corrosion resistance is excellent.

Description

Technical Field

[0001] This invention relates to the field of stainless steel wire manufacturing technology, specifically to a high-strength corrosion-resistant stainless steel wire and its production method. Background Technology

[0002] In many industrial sectors, such as aerospace, marine engineering, and medical devices, the performance requirements for stainless steel wire are becoming increasingly stringent. On the one hand, stainless steel wire needs to have high strength to withstand high-load working conditions; on the other hand, good corrosion resistance is key to ensuring its long-term stable operation in complex environments.

[0003] Traditional stainless steel wire has limitations in balancing strength and corrosion resistance. Some high-strength stainless steel wires have poor corrosion resistance due to alloy composition and manufacturing processes, making them prone to corrosion in humid, acidic, or alkaline environments, leading to performance degradation or even failure. On the other hand, some high-corrosion-resistant stainless steel wires lack the strength required for applications demanding high strength.

[0004] For example, in the aerospace field, stainless steel wire used to manufacture aircraft structural components needs to withstand enormous mechanical stress while resisting corrosion from the complex atmospheric environment at high altitudes. In marine engineering, stainless steel wire used in the construction of offshore platforms and shipbuilding must endure long-term seawater erosion while possessing sufficient strength to ensure structural stability. Existing stainless steel wire products struggle to simultaneously meet these dual requirements of high strength and high corrosion resistance. Therefore, developing a new type of high-strength, corrosion-resistant stainless steel wire and its production method is of significant practical importance. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength, corrosion-resistant stainless steel wire and its production method, thereby solving the problem that existing stainless steel wires cannot simultaneously achieve high strength and high corrosion resistance. By optimizing the alloy composition design and innovating the production process, the produced stainless steel wire possesses both high strength and excellent corrosion resistance, meeting the stringent requirements of high-end fields such as aerospace, marine engineering, and medical devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength corrosion-resistant stainless steel wire, with the following chemical composition by mass percentage: carbon (C) 0.05%-0.15%, silicon (Si) 0.5%-1.5%, manganese (Mn) 1.0%-2.0%, phosphorus (P) ≤0.03%, sulfur (S) ≤0.02%, chromium (Cr) 16.0%-18.0%, nickel (Ni) 8.0%-10.0%, molybdenum (Mo) 2.0%-3.0%, copper (Cu) 0.5%-1.5%, nitrogen (N) 0.05%-0.15%, niobium (Nb) 0.1%-0.3%, titanium (Ti) 0.05%-0.15%, with the balance being iron (Fe) and impurities.

[0007] Preferably, the tensile strength of the stainless steel wire is 1500MPa-1800MPa.

[0008] A method for producing high-strength corrosion-resistant stainless steel wire includes the following steps:

[0009] S1: Melting: A vacuum induction melting furnace is used, with a vacuum degree of 1×10⁻⁶. -3 -5×10 -3 Under the condition of Pa, the raw materials are melted, and the melting temperature is maintained at 1550℃-1650℃;

[0010] S2: Forging: After the molten steel is cast into steel ingots, it is forged. The gradient temperature forging process is adopted. The initial forging temperature is controlled at 1150℃-1200℃, the final forging temperature is controlled at 1100℃-1150℃, the total forging ratio is controlled at 5-8, and the deformation amount per pass is controlled at 15%-25%.

[0011] S3: Hot rolling: The forged steel billet is hot rolled at a heating temperature of 1050℃-1150℃ to produce wire rod with a diameter of 8mm-12mm, and the rolling speed is controlled at 2m / s-4m / s.

[0012] S4: Solution treatment: The hot-rolled wire is solution treated at 1050℃-1100℃ for 30min-60min, and water cooling is used with a cooling rate of 50℃ / s-100℃ / s.

[0013] S5: Cold drawing: The solution-treated wire is subjected to multiple cold drawing processes to be drawn to the required finished product specifications. The area reduction rate of each pass is controlled at 10%-20%.

[0014] S6: Online brightening treatment: After cold drawing and before aging treatment, the stainless steel wire is subjected to online brightening treatment using electrolytic polishing to reduce the surface roughness to Ra≤0.2μm;

[0015] S7: Aging treatment: The cold-drawn stainless steel wire is aged at 450℃-550℃ for 2h-4h.

[0016] Preferably, in the smelting step, the raw materials are composed of the following mass percentages: carbon (C) 0.05%-0.15%, silicon (Si) 0.5%-1.5%, manganese (Mn) 1.0%-2.0%, phosphorus (P) ≤0.03%, sulfur (S) ≤0.02%, chromium (Cr) 16.0%-18.0%, nickel (Ni) 8.0%-10.0%, molybdenum (Mo) 2.0%-3.0%, copper (Cu) 0.5%-1.5%, nitrogen (N) 0.05%-0.15%, niobium (Nb) 0.1%-0.3%, titanium (Ti) 0.05%-0.15%, hydrogen (H) ≤0.0002%, oxygen (O) ≤0.002%, with the balance being iron (Fe) and impurities.

[0017] Preferably, in the forging step, the gradient temperature forging process involves gradually decreasing the forging temperature from 1150℃-1200℃ to 1100℃-1150℃ as the number of forging passes increases.

[0018] Preferably, the online brightening treatment employs electrolytic polishing to remove oxide scale and minor defects from the surface of the stainless steel wire, reducing the surface roughness to Ra≤0.2μm.

[0019] Preferably, a special lubricant is used during the cold drawing process to reduce drawing force and reduce surface roughness.

[0020] Preferably, during the hot rolling process, the reduction amount is adaptively adjusted according to the billet material and the required wire diameter to ensure the dimensional accuracy of the wire.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This high-strength corrosion-resistant stainless steel wire and its production method, through optimized alloy composition design, control the carbon content at 0.05%-0.15%, ensuring increased strength while avoiding a decrease in corrosion resistance; the chromium content of 16.0%-18.0% ensures the formation of a dense chromium oxide protective film, and the molybdenum content of 2.0%-3.0% enhances resistance to pitting and crevice corrosion. The synergistic effect of elements such as nickel and copper ensures that the stainless steel wire shows no significant corrosion after salt spray testing, exhibiting excellent corrosion resistance. At the same time, with the strengthening effect of silicon and manganese, and the dispersion strengthening effect of niobium and titanium forming carbides, combined with the work hardening of cold drawing and the precipitation of strengthening phases through aging treatment, the tensile strength of the stainless steel wire reaches 1500MPa-1800MPa, meeting the high-strength requirements of high-end fields.

[0023] 2. The high-strength corrosion-resistant stainless steel wire and its production method adopt a gradient temperature forging process, with an initial temperature of 1150℃-1200℃ and a final temperature of 1100℃-1150℃. Combined with a total forging ratio of 5-8 and a deformation amount of 15%-25% per pass, the grains are effectively refined, avoiding coarse grains. Hot rolling and solution treatment further refine the microstructure. After solution treatment, a single austenitic microstructure is obtained, which improves the plasticity and stability of the material and lays a good foundation for subsequent processing and performance improvement.

[0024] 3. The high-strength corrosion-resistant stainless steel wire and its production method, by adding an online brightening process, reduce the surface roughness to Ra≤0.2μm through electrolytic polishing, remove surface oxide scale and micro-defects, which not only makes it easier for a uniform oxide protective film to form on the surface and enhances corrosion resistance, but also reduces stress concentration points and improves the structural stability of the stainless steel wire during use. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention provides a technical solution: a high-strength corrosion-resistant stainless steel wire. The high-strength corrosion-resistant stainless steel wire of this invention has the following chemical composition by mass percentage: carbon (C) 0.05%-0.15%, silicon (Si) 0.5%-1.5%, manganese (Mn) 1.0%-2.0%, phosphorus (P) ≤0.03%, sulfur (S) ≤0.02%, chromium (Cr) 16.0%-18.0%, nickel (Ni) 8.0%-10.0%, molybdenum (Mo) 2.0%-3.0%, copper (Cu) 0.5%-1.5%, nitrogen (N) 0.05%-0.15%, niobium (Nb) 0.1%-0.3%, titanium (Ti) 0.05%-0.15%, with the balance being iron (Fe) and unavoidable impurities.

[0027] Carbon (C): Carbon has a significant impact on the strength of stainless steel. Appropriate amounts of carbon can improve the strength of stainless steel through solid solution strengthening and carbide formation. However, excessive carbon content will reduce corrosion resistance. This invention controls the carbon content at 0.05%-0.15%, ensuring a certain level of strength improvement without excessively negatively impacting corrosion resistance.

[0028] Silicon (Si): Silicon mainly plays a deoxidizing role in the steelmaking process, while also improving the strength and hardness of steel. In this invention, the silicon content is controlled at 0.5%-1.5%, which helps to enhance the strength of stainless steel wire and has no significant adverse effect on corrosion resistance.

[0029] Manganese (Mn): Manganese is also a deoxidizer, and it can improve the strength and hardenability of steel. In this invention, the manganese content is set at 1.0%-2.0%, which not only improves the strength of stainless steel wire, but also forms manganese sulfide with sulfur, reducing the effect of sulfur on the hot brittleness of steel, thus having a certain positive effect on corrosion resistance.

[0030] Phosphorus (P) and Sulfur (S): Phosphorus and sulfur are harmful impurity elements in steel. Phosphorus causes cold brittleness in steel, reducing its toughness and corrosion resistance; sulfur forms low-melting-point sulfides, leading to hot brittleness during hot working, and also reducing corrosion resistance. Therefore, this invention strictly controls the phosphorus content to ≤0.03% and the sulfur content to ≤0.02% to ensure the comprehensive performance of the stainless steel wire.

[0031] Chromium (Cr): Chromium is a key element in the corrosion resistance of stainless steel. Chromium forms a dense protective chromium oxide film on the surface of stainless steel, preventing oxygen and other corrosive media from contacting the steel substrate, thereby improving corrosion resistance. This invention controls the chromium content to 16.0%-18.0% to ensure that the stainless steel wire has good corrosion resistance.

[0032] Nickel (Ni): Nickel expands the austenite phase region, enabling stainless steel to achieve a single austenitic structure, thereby improving the steel's plasticity, toughness, and corrosion resistance. Simultaneously, nickel works synergistically with chromium to further enhance the stability of the chromium oxide protective film. In this invention, the nickel content is 8.0%-10.0%, which helps to improve the overall performance of the stainless steel wire.

[0033] Molybdenum (Mo): Molybdenum can improve the pitting and crevice corrosion resistance of stainless steel, especially in corrosive media containing chloride ions. It can enhance the stability and density of the oxide film, while also increasing the strength of the steel. This invention sets the molybdenum content at 2.0%-3.0%, effectively improving the corrosion resistance of stainless steel wire in complex corrosive environments.

[0034] Copper (Cu): Copper can improve the corrosion resistance of stainless steel in certain media, such as sulfuric acid and acetic acid. Simultaneously, copper can also increase the strength of steel through age hardening. In this invention, the copper content is 0.5%-1.5%, which positively contributes to both the strength and corrosion resistance of the stainless steel wire.

[0035] Nitrogen (N): Nitrogen can dissolve in austenite, providing solid solution strengthening and increasing the strength of stainless steel. Simultaneously, nitrogen can form nitrides with chromium, enhancing the stability of the oxide film and improving corrosion resistance. This invention controls the nitrogen content at 0.05%-0.15%, achieving a dual improvement in both strength and corrosion resistance.

[0036] Niobium (Nb) and titanium (Ti): This is one of the innovations of this invention. Niobium and titanium preferentially combine with carbon to form stable carbides, avoiding the consumption of chromium caused by carbon combining with chromium. This ensures a sufficient chromium content during oxide film formation, further improving corrosion resistance. Simultaneously, the precipitation of these carbides plays a role in dispersion strengthening, enhancing the strength of the stainless steel wire. By controlling the niobium content at 0.1%-0.3% and the titanium content at 0.05%-0.15%, a synergistic improvement in corrosion resistance and strength is achieved.

[0037] Precise control of impurity elements: In addition to conventionally controlled phosphorus and sulfur, this invention also strictly controls other impurity elements such as hydrogen (H) and oxygen (O), with hydrogen content ≤0.0002% and oxygen content ≤0.002%. This is another innovation. Excessive hydrogen content can lead to hydrogen embrittlement, affecting the mechanical properties of stainless steel wire; excessive oxygen content can form oxide inclusions, reducing corrosion resistance and mechanical properties. By precisely controlling these trace impurities, the overall performance of stainless steel wire is further improved.

[0038] A method for producing high-strength corrosion-resistant stainless steel wire:

[0039] S1: Melting: Melting is carried out using a vacuum induction melting furnace. The proportioned raw materials are added into the furnace, and melting is performed under a vacuum of 1×10⁻⁶. -3 -5×10 -3 Melting is carried out under controlled conditions to ensure full fusion of alloying elements and reduce the introduction of impurities. During the melting process, the temperature is precisely controlled and maintained at 1550℃-1650℃ to ensure that various alloying elements are uniformly dissolved in the molten steel, forming a molten steel with a homogeneous composition.

[0040] S2: Forging: The molten steel is poured into ingots, which are then forged. A gradient temperature forging process is used, with the initial forging temperature controlled at 1150℃-1200℃. As the number of forging passes increases, the temperature gradually decreases, ultimately controlling the forging temperature at 1100℃-1150℃. The total forging ratio is controlled at 5-8, and the deformation per pass is controlled at 15%-25%. Gradient temperature forging can better refine the grains, avoiding coarse grains caused by excessively high temperatures, while also reducing energy consumption during forging, improving forging efficiency and the mechanical properties of the steel.

[0041] S3: Hot Rolling: The forged steel billet undergoes hot rolling. The hot rolling temperature is 1050℃-1150℃, rolling the billet into wire rod with a diameter of 8mm-12mm. During the hot rolling process, the microstructure of the wire rod is further refined by controlling the rolling speed and reduction, while eliminating residual stress generated during forging. The rolling speed is controlled at 2m / s-4m / s, and the reduction is adjusted according to actual conditions to ensure the dimensional accuracy and quality of the wire rod.

[0042] S4: Solution Treatment: The hot-rolled wire is solution treated. The solution treatment temperature is 1050℃-1100℃, and the holding time is 30min-60min. During the solution treatment process, the alloying elements are fully dissolved in the austenite, followed by rapid cooling to obtain a single austenitic structure, improving the corrosion resistance and plasticity of the stainless steel wire. Water cooling is used, with the cooling rate controlled at 50℃ / s-100℃ / s to ensure rapid cooling of the wire and prevent the precipitation of alloying elements.

[0043] S5: Cold Drawing: The solution-treated wire undergoes cold drawing to achieve the desired finished specifications. The cold drawing process employs a multi-pass drawing technique, with each pass reducing the surface area by 10%-20%. Cold drawing further enhances the strength of the stainless steel wire while improving its surface quality. During the drawing process, a specialized lubricant is used to lubricate the wire, reducing drawing force, lowering surface roughness, and improving drawing efficiency and product quality.

[0044] S6: Online Brightening Treatment: After cold drawing and before aging treatment, an online brightening treatment process is added. Electrolytic polishing is used to treat the surface of the stainless steel wire, removing oxide scale and minor defects, reducing the surface roughness to Ra≤0.2μm. The brightened surface allows for a more uniform formation of the protective oxide film, improving corrosion resistance, enhancing the appearance quality of the stainless steel wire, and reducing stress concentration points during subsequent use.

[0045] S7: Aging Treatment: Cold-drawn stainless steel wire undergoes aging treatment. The aging treatment temperature is 450℃-550℃, and the holding time is 2h-4h. Aging treatment causes alloying elements dissolved in austenite to precipitate, forming fine and dispersed strengthening phases, further improving the strength of the stainless steel wire. After aging treatment, the microstructure of the stainless steel wire is more stable, and its overall performance is significantly improved.

[0046] Example 1

[0047] Smelting: In a vacuum induction melting furnace, 0.10% carbon (C), 1.0% silicon (Si), 1.5% manganese (Mn), 0.02% phosphorus (P), 0.01% sulfur (S), 17.0% chromium (Cr), 9.0% nickel (Ni), 2.5% molybdenum (Mo), 1.0% copper (Cu), 0.10% nitrogen (N), 0.2% niobium (Nb), 0.1% titanium (Ti), with a hydrogen content of 0.00015% and an oxygen content of 0.0015%, and the balance iron (Fe) are added to the furnace under a vacuum of 3×10⁻³ P. a The steel was smelted under the following conditions, with the smelting temperature controlled at 1600℃, to obtain a molten steel with uniform composition.

[0048] Forging: The molten steel is poured into ingots, which are then forged. Gradient temperature forging is used, with an initial temperature of 1180℃, gradually decreasing as forging progresses, and a final forging temperature of 1120℃. The total forging ratio is 6, and the deformation per pass is controlled at 20%. After forging, the grains of the steel ingot are refined, and the microstructure is more compact.

[0049] Hot rolling: The forged steel billet undergoes hot rolling. The hot rolling temperature is 1100℃, and the billet is rolled into wire with a diameter of 10mm. The rolling speed is controlled at 3m / s. By reasonably controlling the reduction, the microstructure of the wire is further refined, and residual stress is effectively eliminated.

[0050] Solution treatment: The hot-rolled wire rod is subjected to solution treatment. The solution treatment temperature is 1070℃, the holding time is 45min, and then it is rapidly water-cooled at a cooling rate of 70℃ / s to obtain a single austenitic structure, which improves the corrosion resistance and plasticity of the wire rod.

[0051] Cold drawing: The solution-treated wire undergoes multiple cold drawing processes to achieve a finished diameter of 2mm. The surface area reduction rate for each pass is controlled at 15%. During the drawing process, a special lubricant is used to lubricate the wire, reducing drawing force, lowering surface roughness, and improving drawing efficiency and product quality.

[0052] Online brightening treatment: The cold-drawn stainless steel wire undergoes online brightening treatment using electrolytic polishing to achieve a surface roughness of Ra0.15μm.

[0053] Aging treatment: The bright-treated stainless steel wire is aged at 500℃ for 3 hours, causing alloying elements to precipitate and form strengthening phases, further improving the strength of the stainless steel wire. Testing showed that the tensile strength of this stainless steel wire reached 1650 MPa, and it showed no significant corrosion after 1000 hours of salt spray testing, demonstrating excellent overall performance.

[0054] Example 2

[0055] Smelting: In a vacuum induction melting furnace, raw materials are added according to the following proportions: 0.08% carbon (C), 0.8% silicon (Si), 1.2% manganese (Mn), 0.025% phosphorus (P), 0.015% sulfur (S), 16.5% chromium (Cr), 8.5% nickel (Ni), 2.2% molybdenum (Mo), 0.8% copper (Cu), 0.08% nitrogen (N), 0.15% niobium (Nb), 0.08% titanium (Ti), hydrogen content 0.00018%, oxygen content 0.0018%, and balance iron (Fe). The process is carried out under a vacuum of 2 × 10⁻³ P. a The steel was then smelted at a temperature of 1580℃ to obtain a uniformly composed molten steel.

[0056] Forging: Molten steel is poured into ingots, which are then forged. Gradient temperature forging is used, with an initial temperature of 1160℃ and a final forging temperature of 1110℃. The total forging ratio is 5, and the deformation per pass is 18%. Forging improves the microstructure of the steel.

[0057] Hot rolling: The forged steel billet is heated to 1080℃ and hot rolled to produce wire rod with a diameter of 9mm. The rolling speed is 2.5m / s, and the reduction is controlled to ensure good wire rod quality.

[0058] Solution treatment: The hot-rolled wire is heated to 1060℃, held for 40 minutes and then water-cooled at a rate of 60℃ / s to obtain a single austenitic structure.

[0059] Cold drawing: The solution-treated wire is cold-drawn to a finished diameter of 3mm. The area reduction rate per pass is 12%, and lubricant is used to ensure the drawing effect.

[0060] Online brightening treatment: Electrolytic polishing is used for online brightening treatment, and the surface roughness reaches Ra0.18μm.

[0061] Aging treatment: The bright-treated stainless steel wire was aged at 480℃ for 2.5 hours to improve its strength. Testing showed that the tensile strength of the stainless steel wire was 1600 MPa, and it showed no significant corrosion after 1000 hours of salt spray testing, meeting the requirements for high strength and corrosion resistance.

[0062]

[0063]

[0064]

[0065] Based on a comprehensive analysis of various parameters, the stainless steel wire prepared in Example 1 is of superior quality. A detailed comparison is as follows:

[0066] Tensile strength: The tensile strength of Example 1 is 1650 MPa, which is higher than that of Example 2 (1600 MPa). This is mainly due to the higher content of alloying elements (such as silicon, manganese, nickel, molybdenum, etc.) in Example 1, and the cold drawing reduction ratio (15%) is greater than that in Example 2 (12%), which improves the strength through more sufficient work hardening.

[0067] Corrosion resistance:

[0068] The chromium content (17.0%) in Example 1 is slightly higher than that in Example 2 (16.5%), and the niobium (0.2%) and titanium (0.1%) contents are also higher, which can more effectively fix carbon elements, reduce chromium consumption, and enhance the stability of the oxide film.

[0069] The hydrogen (0.00015%) and oxygen (0.0015%) content in Example 1 is lower than that in Example 2, which reduces the risk of hydrogen embrittlement and oxide inclusions, and further ensures corrosion resistance.

[0070] Neither salt spray test showed significant corrosion, but the composition design of Example 1 was more conducive to long-term corrosion resistance.

[0071] Surface quality: The surface roughness of Example 1 after online brightening treatment is Ra0.15μm, which is better than Ra0.18μm of Example 2. A smoother surface can reduce the adhesion of corrosive media, reduce stress concentration, and improve overall performance stability.

[0072] Process compatibility: The parameters of the forging ratio (6) and solution heat treatment time (45 min) in Example 1 are better, which can refine the grains and dissolve the alloying elements more fully, laying a better foundation for subsequent processing and performance improvement.

[0073] In summary, the stainless steel wire of Example 1 is superior to that of Example 2 in terms of strength, corrosion resistance potential, and surface quality, and has better overall quality.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength, corrosion-resistant stainless steel wire, characterized in that, The chemical composition by mass percentage is as follows: carbon (C) 0.05%-0.15%, silicon (Si) 0.5%-1.5%, manganese (Mn) 1.0%-2.0%, phosphorus (P) ≤0.03%, sulfur (S) ≤0.02%, chromium (Cr) 16.0%-18.0%, nickel (Ni) 8.0%-10.0%, molybdenum (Mo) 2.0%-3.0%, copper (Cu) 0.5%-1.5%, nitrogen (N) 0.05%-0.15%, niobium (Nb) 0.1%-0.3%, titanium (Ti) 0.05%-0.15%, with the balance being iron (Fe) and impurities.

2. The high-strength corrosion-resistant stainless steel wire according to claim 1, characterized in that: The tensile strength of the stainless steel wire is 1500MPa-1800MPa.

3. A method for producing a high-strength corrosion-resistant stainless steel wire according to any one of claims 1-2, characterized in that, Includes the following steps: S1: Melting: A vacuum induction melting furnace is used, with a vacuum degree of 1×10⁻⁶. -3 -5×10 -3 Under the condition of Pa, the raw materials are melted, and the melting temperature is maintained at 1550℃-1650℃; S2: Forging: After the molten steel is cast into steel ingots, it is forged. The gradient temperature forging process is adopted. The initial forging temperature is controlled at 1150℃-1200℃, the final forging temperature is controlled at 1100℃-1150℃, the total forging ratio is controlled at 5-8, and the deformation amount per pass is controlled at 15%-25%. S3: Hot rolling: The forged steel billet is hot rolled at a heating temperature of 1050℃-1150℃ to produce wire rod with a diameter of 8mm-12mm, and the rolling speed is controlled at 2m / s-4m / s. S4: Solution treatment: The hot-rolled wire is solution treated at 1050℃-1100℃ for 30min-60min, and water cooling is used with a cooling rate of 50℃ / s-100℃ / s. S5: Cold drawing: The solution-treated wire is subjected to multiple cold drawing processes to be drawn to the required finished product specifications. The area reduction rate of each pass is controlled at 10%-20%. S6: Online brightening treatment: After cold drawing and before aging treatment, the stainless steel wire is subjected to online brightening treatment using electrolytic polishing to reduce the surface roughness to Ra≤0.2μm; S7: Aging treatment: The cold-drawn stainless steel wire is aged at 450℃-550℃ for 2h-4h.

4. The method for producing a high-strength corrosion-resistant stainless steel wire according to claim 3, characterized in that: In the smelting step, the raw materials are composed of the following mass percentages: carbon (C) 0.05%-0.15%, silicon (Si) 0.5%-1.5%, manganese (Mn) 1.0%-2.0%, phosphorus (P) ≤0.03%, sulfur (S) ≤0.02%, chromium (Cr) 16.0%-18.0%, nickel (Ni) 8.0%-10.0%, molybdenum (Mo) 2.0%-3.0%, copper (Cu) 0.5%-1.5%, nitrogen (N) 0.05%-0.15%, niobium (Nb) 0.1%-0.3%, titanium (Ti) 0.05%-0.15%, hydrogen (H) ≤0.0002%, oxygen (O) ≤0.002%, with the balance being iron (Fe) and impurities.

5. The method for producing a high-strength corrosion-resistant stainless steel wire according to claim 3, characterized in that: In the forging process, the gradient temperature forging process involves gradually decreasing the forging temperature from 1150℃-1200℃ to 1100℃-1150℃ as the number of forging passes increases.

6. The method for producing a high-strength corrosion-resistant stainless steel wire according to claim 3, characterized in that: The online brightening process uses electrolytic polishing to remove oxide scale and minor defects from the surface of the stainless steel wire, reducing the surface roughness to Ra≤0.2μm.

7. The method for producing a high-strength corrosion-resistant stainless steel wire according to claim 3, characterized in that: A special lubricant is used during the cold drawing process to reduce drawing force and lower surface roughness.

8. The method for producing a high-strength corrosion-resistant stainless steel wire according to claim 3, characterized in that: During the hot rolling process, the reduction amount is adaptively adjusted according to the billet material and the required wire diameter to ensure the dimensional accuracy of the wire.

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