Preparation method of nickel-based alloy welding wire
Patent Information
- Application Number
- CN202610044738.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-14
- Publication Date
- 2026-02-27
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of welding material preparation, in particular to a preparation method of nickel-based alloy welding wire. BACKGROUND
[0002] The nickel-based alloy welding wire is widely used in the fields of petrochemical industry, energy and power, aerospace, nuclear power equipment and high-end equipment manufacturing, etc. due to its excellent high-temperature strength, corrosion resistance, oxidation resistance and good welding performance, and is especially suitable for the welding and repair of key components under harsh working conditions such as high temperature, high pressure and strong corrosion. At present, the nickel-based alloy welding wire commonly used in engineering is prepared by processes such as vacuum melting, ingot casting, hot working and multi-pass drawing, and the component design and preparation process have a decisive influence on the uniformity of the microstructure, mechanical properties and welding stability of the welding wire.
[0003] In the prior art, some nickel-based alloy welding wires still have deficiencies in component proportioning and preparation process control, such as uneven distribution of alloying elements, difficulty in effectively controlling impurity elements, obvious segregation of cast blank microstructure, which is prone to crack or wire breakage problems in the subsequent hot rolling and drawing process; at the same time, the intermediate annealing and finished product annealing process is unreasonable, which is easy to cause the surface oxidation of the welding wire, insufficient smoothness, thereby affecting the stability of wire feeding and the quality of weld formation. In addition, the process window of some existing preparation methods is narrow, the process stability is poor, it is difficult to balance the strength, plasticity and welding performance of the welding wire, which restricts its further application in high-end fields.
[0004] Therefore, it is urgent to provide a preparation method of nickel-based alloy welding wire with reasonable component design, controllable preparation process, which can effectively improve the alloy microstructure uniformity and processing performance, so as to improve the comprehensive performance and use reliability of the welding wire, and meet the development needs of high-performance welding materials. SUMMARY
[0005] The purpose of the present application is to solve the problems of uneven distribution of alloy components, difficulty in impurity control, easy to produce cracks in the processing process and insufficient welding stability in the prior art, and to provide a preparation method of nickel-based alloy welding wire. Through reasonable alloy component design and controllable vacuum melting, hot working, multi-pass drawing and annealing process, the uniformity of the microstructure of the welding wire and the performance are optimized, so as to obtain a nickel-based alloy welding wire with high strength, high plasticity, excellent corrosion resistance and stable welding performance, which meets the application requirements under high temperature, high pressure and strong corrosion conditions.
[0006] To achieve the above purpose, the technical scheme adopted by the present application is:
[0007] A method for preparing a nickel-based alloy welding wire, wherein the nickel-based alloy welding wire has the following composition by mass: Ni 58.0-62.0 parts, Cr 20.0-23.0 parts, Mo 3.0-5.0 parts, Fe 2.0-5.0 parts, Nb 1.0-2.5 parts, Ti 0.8-1.2 parts, Al 0.3-0.7 parts, C 0.02-0.05 parts, Si 0.2-0.4 parts, Mn 0.3-0.5 parts, P 0.005-0.015 parts, S 0.005-0.015 parts;
[0008] The surface of the nickel-based alloy welding wire is coated with an organic rust inhibitor, the formula of which is as follows: 35 parts oleic acid, 2 parts benzotriazole derivative, 20 parts triethanolamine, 15 parts polyethylene wax, 2 parts fatty alcohol polyoxyethylene ether, and 25 parts isopropanol.
[0009] The structure of the benzotriazole derivative is: N-((3-((dipropylamino)methyl)-6-methoxy-2,3-dihydro-1H-benzo[d][1,2,3]triazol-1-yl)methyl)-N-octyloctylamine;
[0010] The method for preparing the nickel-based alloy welding wire includes the following steps:
[0011] S1. Raw material pretreatment: The raw materials of the formula components are subjected to rust removal and degreasing treatment, and crushed into particles with a particle size of 5-10mm;
[0012] S2. Vacuum Melting: The pretreated raw materials are added to a vacuum induction melting furnace, and a vacuum is drawn until the vacuum degree is ≤5×10⁻⁶. -3 Pa, heat to 1550-1600℃, hold for 30-60 minutes to completely melt the raw materials, stir 2-3 times during the process, each time for 5-10 minutes, and then cast to obtain alloy billet;
[0013] S3. Hot rolling treatment: The alloy billet is heated to 1100-1200℃, held for 40-60 minutes, and then hot rolled. The hot rolling deformation is 60-80%, and hot rolled wire rod with a diameter of 8-12mm is obtained.
[0014] S4. Wire drawing process: The hot-rolled wire rod is subjected to multiple cold drawing passes in sequence, with the deformation amount of each drawing pass controlled at 8-12%. After every 3-5 drawing passes, intermediate annealing is performed at an annealing temperature of 850-950℃ for 30-60 minutes to finally obtain a welding wire rough with a diameter of 0.8-2.0mm.
[0015] S5. Finished product processing: The rough welding wire is subjected to bright annealing at a temperature of 750-850℃ for 20-30 minutes, followed by surface polishing and rust prevention treatment to finally obtain a finished nickel-based alloy welding wire.
[0016] Further, the formula, by weight parts, is as follows: Ni 59.0-61.0 parts, Cr 20.5-22.5 parts, Mo 3.5-4.5 parts, Fe 2.5-4.5 parts, Nb 1.5-2.2 parts, Ti 0.9-1.1 parts, Al 0.4-0.6 parts, C 0.025-0.035 parts, Si 0.25-0.35 parts, Mn 0.35-0.45 parts, P 0.008-0.12 parts, and S 0.08-0.12 parts.
[0017] Furthermore, in S1, the rust removal of the raw material is carried out by sandblasting, with a sandblasting pressure of 0.3-0.5MPa and a sandblasting time of 3-5min; the degreasing is carried out by alkaline degreasing agent, which is soaked at 60-80℃ for 10-20min.
[0018] Furthermore, in step S2, electromagnetic stirring is used during the vacuum melting process, with a stirring rate of 30-50 r / min.
[0019] Furthermore, in step S2, the preheating temperature of the mold for casting is 300-400℃, and the casting speed is 5-8 kg / min.
[0020] Furthermore, in S3, the hot rolling adopts a multi-pass progressive rolling process, and the rolling speed is controlled at 5-10m / s.
[0021] Furthermore, in step S4, the intermediate annealing process is carried out under the protection of an inert gas, which is argon, and the argon flow rate is 5-10 L / min.
[0022] Furthermore, in S5, the bright annealing adopts a hydrogen protective atmosphere with a hydrogen purity of ≥99.99%, and the cooling method after annealing is to cool with the furnace to below 300°C and then air cool.
[0023] Furthermore, in S5, the surface polishing is carried out by mechanical polishing, with a polishing wheel speed of 1500-2000 r / min and a polishing time of 3-5 min.
[0024] Furthermore, in step S5, the rust prevention treatment involves dipping the organic rust inhibitor in for 2-4 minutes, followed by natural air drying.
[0025] Furthermore, the nickel-based alloy welding wire described belongs to welding material products such as those for special steel, new alloys, and special repair applications.
[0026] Compared with the prior art, the beneficial effects of the present invention are:
[0027] 1. Significantly Improved Welded Joint Performance: Through rational alloy composition design, the nickel-based alloy welding wire prepared by this invention exhibits excellent tensile strength and plasticity in the welded joint. The welded joint has higher strength and significantly improved plasticity, better meeting the welding requirements under harsh conditions such as high temperature, high pressure, and strong corrosion, effectively enhancing the reliability and safety of the welded structure.
[0028] 2. Surface Quality and Processing Performance Optimization: This invention optimizes processes such as hot working and wire drawing, effectively reducing the probability of cracks and wire breakage during processing. Simultaneously, the optimized intermediate annealing and finished annealing processes ensure the surface quality and dimensional accuracy of the welding wire after processing, improving wire feeding stability and welding quality, resulting in a smoother surface with no obvious oxide scale, scratches, or rust.
[0029] 3. Enhanced Rust Prevention: This invention employs a unique organic rust inhibitor formula to treat the surface of the welding wire, significantly improving its rust prevention performance. During long-term storage and use, the surface of the welding wire effectively resists rust corrosion, spotting, and other rust-prevention failures, extending the service life of the welding wire, reducing maintenance costs, and further enhancing the overall performance and reliability of the welding wire. Detailed Implementation
[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the inventive content. 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 skilled in the art without creative effort are within the scope of protection of the present invention.
[0031] Preparation Example 1
[0032] Preparation of benzotriazole derivatives:
[0033] ;
[0034] Under a nitrogen atmosphere, 5.00 g of compound 1, 2.40 g of compound 2, 2.38 g of sodium tert-butoxide, 0.34 g of tris(dibenzylacetone)palladium, 0.13 g of tri-tert-butylphosphine, and 70 ml of toluene solution were added to the reaction system. The mixture was stirred thoroughly, heated to 120 °C, and refluxed for 12 h. After the reaction was complete, the reaction solution was allowed to cool naturally to room temperature. 50 ml of deionized water was slowly added to the reaction system for quenching. The mixture was filtered through diatomaceous earth, and the filter cake was washed with a small amount of dichloromethane. The filtrate was then transferred to… The mixture was transferred to a separatory funnel and separated. The aqueous phase was extracted twice with ethyl acetate. The organic phases were combined and washed twice with saturated brine. The mixture was separated, and the organic phase was collected. Anhydrous sodium sulfate was added and the solution was dried. The solution was filtered, and the filtrate was rotary evaporated under reduced pressure to obtain the crude product. The crude product was purified by silica gel column chromatography using a mixed solvent of petroleum ether and ethyl acetate. The eluent was collected, concentrated under reduced pressure to remove the solvent, and 4.15 g of benzotriazole derivative was obtained. The mass spectrometry (MS) of the benzotriazole derivative was: [M+H]. + =518.
[0035] Preparation Example 2
[0036] Preparation of organic rust inhibitors:
[0037] Step 1: Weigh isopropanol and add it to a constant temperature heating and stirring vessel. Start the stirring device and set the stirring speed to 200 r / min. Heat to 60℃ and maintain the constant temperature. Add fatty alcohol polyoxyethylene ether and continue stirring for 20 min until the fatty alcohol polyoxyethylene ether is completely dissolved and a uniform transparent solution is formed.
[0038] Step 2: Add polyethylene wax to the transparent solution, keep the stirring rate constant, raise the temperature inside the vessel to 120°C, and stir at a constant temperature for 30 minutes; observe the dissolution state every 10 minutes until the polyethylene wax is completely melted and uniformly mixed with the solution.
[0039] Step 3: Reduce the temperature inside the reactor to 70°C, add oleic acid first and stir for 15 minutes; then add triethanolamine and continue stirring for 25 minutes to allow the oleic acid and triethanolamine to react fully and form a stable saponification system; finally, add the benzotriazole derivative, increase the stirring speed to 300 r / min, and stir for 30 minutes to ensure that the functional components are evenly dispersed in the system.
[0040] Step 4: Start the homogenizer and homogenize the mixture at a speed of 2500 r / min for 15 min. After homogenization, turn off the heating device and connect the mixing vessel to the constant temperature cooling tank. Cool the mixture to 30°C at a rate of 5°C / min. Maintain a stirring speed of 100 r / min during the cooling process to prevent the components from separating out.
[0041] Step 5: After the system temperature drops to room temperature, stop stirring and filter the material through a vacuum filter to remove any trace impurities or incompletely dissolved particles to obtain an organic rust inhibitor.
[0042] Comparative preparation example 1:
[0043] Following the preparation method in Preparation Example 2, the benzotriazole derivative was replaced with N-octylbenzotriazole, and other operations remained the same as in Preparation Example 2.
[0044] Comparative preparation example 2:
[0045] Following the preparation method in Preparation Example 2, the benzotriazole derivative was replaced with 5-methylbenzotriazole, and other operations remained the same as in Preparation Example 2.
[0046] Example 1
[0047] Preparation of a nickel-based alloy welding wire:
[0048] 1. Raw material components:
[0049] Ni 60.0 parts, Cr 21.5 parts, Mo 4.0 parts, Fe 3.0 parts, Nb 2.0 parts, Ti 1.0 parts, Al 0.5 parts, C 0.03 parts, Si 0.3 parts, Mn 0.4 parts, P 0.01 parts, S 0.01 parts.
[0050] 2. Preparation method:
[0051] S1. Raw material pretreatment: Weigh each raw material component. First, remove rust from the raw materials by sandblasting at a pressure of 0.4 MPa for 4 minutes to ensure complete removal of scale, rust, and other impurities from the surface. Then, degrease the raw materials using an alkaline degreaser. Immerse the rust-removed raw materials in the alkaline degreaser at 65°C for 15 minutes to thoroughly remove oil, dust, and other contaminants from the surface. Finally, crush the rust-removed and degreased raw materials into particles with a diameter of 8 mm for later use.
[0052] S2. Vacuum Melting: Add the pretreated raw materials into the vacuum induction melting furnace, close the furnace door, start the vacuum system, and evacuate until the vacuum degree reaches 3×10⁻⁶. -3Pa; then the heating device was started, raising the furnace temperature to 1580℃ and holding it for 45 minutes to completely melt the raw materials and form a uniform alloy melt; during the melting process, electromagnetic stirring was used, controlling the stirring rate at 40 r / min, stirring twice, each time for 8 minutes, to promote uniform distribution of alloy elements and reduce component segregation; at the same time, the casting mold was preheated to 350℃, and after the alloy melt was held at the temperature, the melt was poured into the preheated mold at a casting speed of 6 kg / min, and after cooling, the alloy billet was obtained:
[0053] S3. Hot rolling treatment: The alloy billet is fed into a heating furnace and heated to 1150℃. It is held for 50 minutes to make the internal temperature of the billet uniform. Then, it is hot rolled using a multi-pass progressive rolling method, with the rolling speed controlled at 8m / s and the hot rolling deformation at 70%, finally obtaining a hot rolled wire rod with a diameter of 10mm.
[0054] S4. Wire drawing process: The hot-rolled wire rod is fed into the wire drawing equipment and subjected to multiple cold drawing processes in sequence. The deformation amount of each drawing process is controlled within 10%. After every 4 drawing processes, the wire rod is subjected to intermediate annealing. The intermediate annealing is carried out in an argon protective atmosphere, with the argon flow rate controlled at 8L / min, the annealing temperature at 900℃, and the holding time at 45min. After multiple cold drawing and intermediate annealing processes, a welding wire rough product with a diameter of 1.2mm is finally obtained.
[0055] S5. Finished Product Processing: The rough welding wire is subjected to bright annealing in a hydrogen protective atmosphere at a temperature of 800°C for 25 minutes. After annealing, it is cooled in the furnace to below 300°C and then air-cooled to room temperature. Subsequently, the surface is polished using mechanical polishing at a wheel speed of 1800 r / min to remove oxide film, scratches, and other defects from the surface of the welding wire. Finally, rust prevention is performed by immersing the polished welding wire in the organic rust inhibitor prepared in Preparation Example 2 for 3 minutes. After removal, it is air-dried to obtain the finished nickel-based alloy welding wire.
[0056] Example 2
[0057] The preparation of a nickel-based alloy welding wire is carried out by referring to the preparation method of Example 1, except that the mass fraction of Ni in the raw material is changed to 62 parts, and other operations are kept the same as in Example 1.
[0058] Example 3
[0059] The preparation of a nickel-based alloy welding wire is carried out by referring to the preparation method of Example 1, except that the mass fraction of Cr in the raw material is changed to 23 parts, and other operations are kept the same as in Example 1.
[0060] Comparative Example 1
[0061] The preparation of a nickel-based alloy welding wire is carried out by referring to the preparation method of Example 1, except that the mass fraction of Cr in the raw material is replaced with 10 parts, and other operations are kept the same as in Example 1.
[0062] Comparative Example 2
[0063] The preparation of a nickel-based alloy welding wire is carried out by referring to the preparation method of Example 1, except that the mass fraction of Fe in the raw material is replaced with 10 parts, and other operations are kept the same as in Example 1.
[0064] Comparative Example 3
[0065] The preparation of a nickel-based alloy welding wire is carried out according to the preparation method of Example 1, except that the organic rust inhibitor prepared in Preparation Example 2 is replaced with the organic rust inhibitor prepared in Comparative Preparation Example 1, and other operations are the same as in Example 1.
[0066] Comparative Example 4
[0067] The preparation of a nickel-based alloy welding wire is carried out according to the preparation method of Example 1, except that the organic rust inhibitor prepared in Preparation Example 2 is replaced with the organic rust inhibitor prepared in Comparative Preparation Example 2, and other operations are the same as in Example 1.
[0068] Performance testing:
[0069] 1. Tensile test of welded joint: According to GB / T 19869.1-2005 standard, nickel-based alloy plates with a thickness ≥12mm were selected and processed into butt joint test plates according to national standard requirements. Automatic argon arc welding was used for welding, with the following parameters: welding current 80-120A, arc voltage 10-14V, welding speed 3-5mm / s, and argon gas (flow rate 15-20L / min) to ensure good weld formation and no obvious defects. Tensile specimens were cut from the welded test plate, with the specimen axis parallel to the weld centerline and the weld center located at the center of the specimen gauge length.
[0070] The room temperature tensile test was performed according to the requirements of GB / T 228.1-2010, and the tensile strength of the welded joint was recorded. The results are shown in the table below.
[0071] 2. Welded Joint Bending Test: Four bending specimens (two face bends and two back bends) were cut from the above-mentioned welded test plate. The specimen width was 30 mm, the thickness was the same as the base metal thickness, and the specimen edges were free of burrs. A bending mandrel diameter of 3 times the specimen thickness was selected, and the bending angle was 180°. The bending was performed slowly using a press to ensure uniform stress on the specimen and no impact load. After bending, the bending surface of the specimen (weld and heat-affected zone) was observed for cracks or fissures.
[0072] Results evaluation: After bending, the sample surface had no cracks with a length ≥3mm, and the welded joint was judged to be of qualified plasticity. The results are shown in the table below.
[0073] 3. Surface Quality Test: In accordance with GB / T 1031-2009 and GB / T 13948-2016 standards, a roughness tester was used to select three test points evenly along the circumference of the welding wire and measure the Ra value. The surface condition of the welding wire was observed using a magnifying glass (10x magnification) to check for defects such as oxide scale, scratches, and rust. The results are shown in the table below.
[0074] 4. Rust prevention performance test of welding wire: According to GB / T 10125-2021 standard, three sections of finished welding wire, each 50mm in length, were cut and subjected to a neutral salt spray test (NSS). The salt solution concentration was 5%, the solution pH was 7.0, the test temperature was 35℃, and the salt spray deposition was 1mL / (80cm). 2 The test time was set to 240 hours. After the test, the surface of the sample was observed to check for rust, spots, peeling and other rust prevention failures.
[0075] Table 1. Performance Test Results
[0076] Tensile strength of welded joint (MPa) Bending test result of welded joint Surface roughness (μm) Surface quality Rust prevention of welding wire Example 1 750 Pass 0.6 No scale, scratch and rust, surface smooth No rust, spot, peeling Example 2 760 Pass 0.6 No scale, scratch and rust, surface smooth No rust, spot, peeling Example 3 755 Pass 0.7 No scale, scratch and rust, surface smooth No rust, spot, peeling Comparative Example 1 670 Fail 1.2 Slight scale, fine scratch in part No rust, spot, peeling Comparative Example 2 680 Fail 1.1 Obvious scale, scratch in many places No rust, spot, peeling Comparative Example 3 740 Pass 0.8 No scale, scratch and rust, surface smoothness low Slight rust, small amount of spot, no peeling Comparative Example 4 735 Pass 0.7 No scale, scratch and rust, surface smoothness low Slight rust, small amount of spot, no peeling
[0077] Table 1 shows that the nickel-based alloy welding wire prepared using the formulation and process of this invention exhibits stable and excellent overall performance in terms of weld joint strength, plasticity, and surface quality. The performance differences between the various examples are small, and all maintain good bending performance and high welding reliability. In contrast, the comparative examples show significant deterioration in the mechanical properties and surface condition of the weld joints due to unreasonable alloy composition or rust-preventive systems, with some samples exhibiting deficiencies in plasticity and surface quality. It can also be seen that a reasonable alloy element ratio helps improve the overall performance of the weld joint, while the optimized organic rust-preventive system significantly improves the surface condition and long-term rust-preventive stability of the welding wire, demonstrating the overall advantage of this invention's technical solution in synergistic performance optimization.
[0078] 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 method for preparing a nickel-based alloy welding wire, characterized in that, The formulation of the nickel-based alloy welding wire, by weight, is as follows: Ni 58.0-62.0 parts, Cr 20.0-23.0 parts, Mo 3.0-5.0 parts, Fe 2.0-5.0 parts, Nb 1.0-2.5 parts, Ti 0.8-1.2 parts, Al 0.3-0.7 parts, C 0.02-0.05 parts, Si 0.2-0.4 parts, Mn 0.3-0.5 parts, P 0.005-0.015 parts, S 0.005-0.015 parts; The surface of the nickel-based alloy welding wire is coated with an organic rust inhibitor, the formula of which is as follows: 35 parts oleic acid, 2 parts benzotriazole derivative, 20 parts triethanolamine, 15 parts polyethylene wax, 2 parts fatty alcohol polyoxyethylene ether, and 25 parts isopropanol. The structure of the benzotriazole derivative is: N-((3-((dipropylamino)methyl)-6-methoxy-2,3-dihydro-1H-benzo[d][1,2,3]triazol-1-yl)methyl)-N-octyloctylamine; The method for preparing the nickel-based alloy welding wire includes the following steps: S1. Raw material pretreatment: The raw materials of the formula components are subjected to rust removal and degreasing treatment, and crushed into particles with a particle size of 5-10mm; S2. Vacuum Melting: The pretreated raw materials are added to a vacuum induction melting furnace, and a vacuum is drawn until the vacuum degree is ≤5×10⁻⁶. -3 Pa, heat to 1550-1600℃, hold for 30-60 minutes to completely melt the raw materials, stir 2-3 times during the process, each time for 5-10 minutes, and then cast to obtain alloy billet; S3. Hot rolling treatment: The alloy billet is heated to 1100-1200℃, held for 40-60 minutes, and then hot rolled. The hot rolling deformation is 60-80%, and hot rolled wire rod with a diameter of 8-12mm is obtained. S4. Wire drawing process: The hot-rolled wire rod is subjected to multiple cold drawing passes in sequence, with the deformation amount of each drawing pass controlled at 8-12%. After every 3-5 drawing passes, intermediate annealing is performed at an annealing temperature of 850-950℃ for 30-60 minutes to finally obtain a welding wire rough with a diameter of 0.8-2.0mm. S5. Finished product processing: The rough welding wire is subjected to bright annealing at a temperature of 750-850℃ for 20-30 minutes, followed by surface polishing and rust prevention treatment to finally obtain a finished nickel-based alloy welding wire.
2. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, The formula, by weight, is as follows: Ni 59.0-61.0 parts, Cr 20.5-22.5 parts, Mo 3.5-4.5 parts, Fe 2.5-4.5 parts, Nb 1.5-2.2 parts, Ti 0.9-1.1 parts, Al 0.4-0.6 parts, C 0.025-0.035 parts, Si 0.25-0.35 parts, Mn 0.35-0.45 parts, P 0.008-0.12 parts, and S 0.08-0.12 parts.
3. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In S1, the raw material is derusted by sandblasting at a pressure of 0.3-0.5 MPa for 3-5 minutes; the degreasing is done by an alkaline degreasing agent, which is soaked at 60-80°C for 10-20 minutes.
4. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In S2, electromagnetic stirring is used during the vacuum melting process, and the stirring rate is 30-50 r / min.
5. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In S2, the preheating temperature of the mold for casting is 300-400℃, and the casting speed is 5-8 kg / min.
6. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In S3, hot rolling adopts multi-pass progressive rolling, and the rolling speed is controlled at 5-10m / s.
7. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In step S4, the intermediate annealing process is carried out under the protection of an inert gas, which is argon, and the argon flow rate is 5-10 L / min.
8. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In S5, bright annealing is performed in a hydrogen protective atmosphere with a hydrogen purity of ≥99.99%. After annealing, the cooling method is to cool the furnace to below 300°C and then air cool.
9. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In S5, surface polishing is performed using mechanical polishing with a polishing wheel speed of 1500-2000 r / min.
10. The method for preparing a nickel-based alloy welding wire according to claim 1, characterized in that, In step S5, the rust prevention treatment involves dipping the organic rust inhibitor in for 2-4 minutes, followed by natural air drying.