Efficient environment-friendly machining and manufacturing method and machining and manufacturing equipment set for titanium alloy welding wires

Abstract

The invention provides an efficient and environment-friendly machining and manufacturing process and machining and manufacturing equipment set for a titanium alloy welding wire. The efficient and environment-friendly machining and manufacturing process comprises the steps that a titanium alloy strip is sequentially subjected to continuous cold rolling, annealing treatment, continuous fine drawing, mechanical rough grinding, mechanical fine grinding, roller die drawing rounding and precise drawing, and the titanium alloy welding wire is obtained. Therefore, automatic continuous production can be achieved through continuous cold rolling, and the titanium alloy strip machining efficiency is greatly improved. And continuous cold rolling and continuous fine drawing refine grains and a second phase, internal stress is eliminated through annealing, the surface quality and the size precision are improved through rough grinding and fine grinding, it is guaranteed that the diameter is uniform and the roundness is high through roller die drawing rounding, and finally the high-quality welding wire is obtained. In addition, mechanical rough grinding replaces chemical corrosion to remove oxide skin, accurate grinding ensures the dimensional accuracy of the welding wire, the surface quality of the welding wire is more uniform and consistent, the welding manufacturability is better, the production efficiency is improved, the production cost is reduced, and meanwhile, the problem of environmental pollution caused by chemical cleaning is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium alloys, and in particular, to a method for efficiently and environmentally friendly processing and manufacturing of titanium alloy welding wires and a set of processing and manufacturing equipment. Background Art

[0002] Titanium alloy welding wires have excellent comprehensive properties and are widely used. In the aerospace field, they are used for welding aircraft engine components, fuselage frames, etc. to ensure structural strength and lightweight; in medical devices, they can achieve precise welding of titanium alloy implants. Due to their good biocompatibility, they will not cause adverse reactions to the human body; in the chemical industry, they can be used for welding corrosion-resistant equipment to resist the erosion of strong corrosive media such as acids and alkalis and extend the service life of equipment. They are key welding materials in various industrial fields. At present, most titanium alloy welding wire production enterprises still use chemical methods or mechanical abrasive belt grinding and polishing methods to remove the oxide scale on the surface of titanium alloy welding wires. These processes not only cause a certain degree of corrosion on the wire surface, uneven wire surface treatment, poor dimensional accuracy, but also low efficiency and high cost of wire surface treatment. During welding, there are serious splashes, unstable arcs, and unsmooth wire feeding, etc., resulting in poor welding processability and weld quality, affecting the performance of welded joints and the quality of welded parts.

[0003] Therefore, there is an urgent need to provide an efficient and environmentally friendly manufacturing solution. Summary of the Invention

[0004] The main object of the present invention is to provide a method for efficiently and environmentally friendly manufacturing of titanium alloy welding wires and a set of processing and manufacturing equipment, so as to at least solve the problems of uneven wire surface treatment, poor dimensional accuracy, and low surface treatment efficiency existing in the production of titanium alloy welding wires in the prior art.

[0005] To achieve the above object, the present invention provides a method for efficiently and environmentally friendly processing and manufacturing of titanium alloy welding wires, including the following steps:

[0006] S1. Continuous cold rolling: Continuously cold roll the titanium alloy strip to be processed through a three-roll mill, and gradually reduce its diameter in the three-roll mill to obtain a first titanium alloy strip with a first diameter;

[0007] S2. Annealing treatment: Anneal the first titanium alloy strip;

[0008] S3. Continuous precision drawing: Draw the first titanium alloy strip after annealing treatment through a plurality of dies with gradually decreasing diameters in sequence to obtain a second titanium alloy strip with a second diameter, and the second diameter is smaller than the first diameter;

[0009] S4. Mechanical Rough Grinding: The second titanium alloy bar is successively passed through multiple groups of rough grinding tools for rough grinding to remove the oxide scale on the surface of the second titanium alloy bar, obtaining a third titanium alloy bar with a third diameter, and the third diameter is smaller than the second diameter;

[0010] S5. Mechanical Fine Grinding: The third titanium alloy bar is successively passed through multiple groups of fine grinding tools for fine grinding to polish the surface of the third titanium alloy bar, obtaining a fourth titanium alloy bar with a fourth diameter, and the fourth diameter is smaller than the third diameter;

[0011] S6. Roll Die Drawing and Sizing: The fourth titanium alloy bar is successively passed through multiple groups of three-roll Y-type rolling mills for drawing and sizing, obtaining a fifth titanium alloy bar with a fifth diameter, and the fifth diameter is smaller than the fourth diameter;

[0012] S7. Precision Drawing: The fifth titanium alloy bar is drawn through a polycrystalline diamond drawing die to a target diameter, obtaining a titanium alloy welding wire, and the target diameter is smaller than the fifth diameter.

[0013] Optionally, in S1, the single-pass reduction rate is 10% - 30%, and the rolling speed is less than or equal to 5 m / s.

[0014] Optionally, in S2, the annealing temperature is 820°C - 830°C, and the holding time is 120 min - 130 min.

[0015] Optionally, in S3, the die is a diamond-coated die, and calcium-based lubricating powder is used for lubrication during the drawing process.

[0016] Optionally, in S4, the rough grinding speed is 2.0 m / s - 5.0 m / s, and the surface roughness of the third titanium alloy bar is 80 - 100 μm; in S5, the fine grinding speed is 2.0 m / s - 5.0 m / s, and the surface roughness of the fourth titanium alloy bar is 0.25 - 0.35 μm.

[0017] Optionally, in S4, the included angle between adjacent rough grinding tool groups is 30° - 60°.

[0018] Optionally, in S6, the drawing and sizing speed is 2.0 m / s - 5.0 m / s.

[0019] Optionally, in S7, the drawing speed is 1.0 m / s - 4.0 m / s, and the reduction rate is 5% - 20%.

[0020] Optionally, after S7, it further includes:

[0021] Ultrasonic cleaning of the titanium alloy welding wire with clear water, and drying the titanium alloy welding wire after cleaning.

[0022] Optionally, the drying temperature of the titanium alloy welding wire after cleaning is 160°C - 170°C.

[0023] The present application also provides a set of titanium alloy welding wire processing and manufacturing equipment, which is applied to the efficient and environmentally friendly processing and manufacturing method of the titanium alloy welding wire described in the present application. The equipment set includes:

[0024] A continuous cold rolling equipment, which is used to perform multi-pass continuous cold rolling on the titanium alloy bar to be processed to gradually reduce its diameter and obtain a first titanium alloy bar with a first diameter;

[0025] An annealing treatment equipment, which is used to perform annealing treatment on the first titanium alloy bar;

[0026] A continuous precision drawing equipment, which is used to perform drawing with gradually decreasing diameters on the first titanium alloy bar after annealing treatment to obtain a second titanium alloy bar with a second diameter, and the second diameter is smaller than the first diameter;

[0027] A mechanical rough grinding equipment, which is used to perform rough grinding on the second titanium alloy bar passing through it to remove the oxide skin on the surface of the second titanium alloy bar and obtain a third titanium alloy bar with a third diameter, and the third diameter is smaller than the second diameter;

[0028] A mechanical precision grinding equipment, which is used to perform surface polishing on the third titanium alloy bar passing through it to obtain a fourth titanium alloy bar with a fourth diameter, and the fourth diameter is smaller than the third diameter;

[0029] A roll die drawing and sizing equipment, which is used to perform drawing and sizing on the fourth titanium alloy bar passing through it to obtain a fifth titanium alloy bar with a fifth diameter, and the fifth diameter is smaller than the fourth diameter;

[0030] A precision drawing equipment, which is used to draw the fifth titanium alloy bar to a target diameter to obtain a titanium alloy welding wire, and the target diameter is smaller than the fifth diameter.

[0031] An efficient and environmentally friendly processing and manufacturing method and processing and manufacturing equipment group for a titanium alloy welding wire of the technical solution of the present invention include: continuous cold rolling: continuously cold rolling a titanium alloy bar to be processed through a three-roll mill, gradually reducing its diameter in the three-roll mill to obtain a first titanium alloy bar with a first diameter; annealing treatment: performing annealing treatment on the first titanium alloy bar; continuous precision drawing: sequentially drawing the first titanium alloy bar after annealing treatment through a plurality of dies with gradually decreasing diameters to obtain a second titanium alloy bar with a second diameter, and the second diameter is smaller than the first diameter; mechanical rough grinding: sequentially passing the second titanium alloy bar through multiple groups of rough grinding tools for rough grinding to remove the oxide scale on the surface of the second titanium alloy bar to obtain a third titanium alloy bar with a third diameter, and the third diameter is smaller than the second diameter; mechanical fine grinding: sequentially passing the third titanium alloy bar through multiple groups of fine grinding tools for fine grinding to polish the surface of the third titanium alloy bar to obtain a fourth titanium alloy bar with a fourth diameter, and the fourth diameter is smaller than the third diameter; roll die drawing and sizing: sequentially passing the fourth titanium alloy bar through multiple groups of three-roll Y-type rolling mills for drawing and sizing to obtain a fifth titanium alloy bar with a fifth diameter, and the fifth diameter is smaller than the fourth diameter; precision drawing: drawing the fifth titanium alloy bar through a polycrystalline diamond drawing die to a target diameter to obtain a titanium alloy welding wire, and the target diameter is smaller than the fifth diameter. Thus, continuous cold rolling can achieve automated continuous production, greatly improving the processing efficiency of titanium alloy bars, and the efficiency of continuous precision drawing is higher than that of single-pass drawing. Continuous cold rolling and continuous precision drawing refine grains and the second phase, annealing eliminates internal stress, rough grinding removes the surface oxide scale, fine grinding improves the surface quality and dimensional accuracy, roll die drawing and sizing ensures uniform diameter and high roundness, and finally high-quality welding wire is obtained. In addition, mechanical rough grinding replaces chemical corrosion to remove the oxide scale, fine grinding ensures the dimensional accuracy of the welding wire, the surface quality of the welding wire is more uniform, the welding processability is better, the production efficiency is improved, the production cost is reduced, and at the same time, the environmental pollution problem caused by chemical cleaning is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0033] Figure 1 is a flowchart of an efficient and environmentally friendly processing and manufacturing method for a titanium alloy welding wire according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] This application provides an efficient and environmentally friendly processing and manufacturing method for titanium alloy welding wires, including the following steps:

[0036] S1. Continuous cold rolling: Continuously cold roll the titanium alloy bar to be processed through a three-roll mill, and gradually reduce its diameter in the three-roll mill to obtain a first titanium alloy bar with a first diameter;

[0037] S2. Annealing treatment: Anneal the first titanium alloy bar;

[0038] S3. Continuous precision drawing: Draw the first titanium alloy bar after annealing treatment through a plurality of dies with gradually decreasing diameters in sequence to obtain a second titanium alloy bar with a second diameter, and the second diameter is smaller than the first diameter;

[0039] S4. Mechanical rough grinding: Pass the second titanium alloy bar through multiple groups of rough grinding tools in sequence for rough grinding to remove the oxide scale on the surface of the second titanium alloy bar and obtain a third titanium alloy bar with a third diameter, and the third diameter is smaller than the second diameter;

[0040] S5. Mechanical fine grinding: Pass the third titanium alloy bar through multiple groups of fine grinding tools in sequence for fine grinding to polish the surface of the third titanium alloy bar and obtain a fourth titanium alloy bar with a fourth diameter, and the fourth diameter is smaller than the third diameter;

[0041] S6. Roll die drawing and sizing: Pass the fourth titanium alloy bar through multiple groups of three-roll Y-type rolling mills in sequence for drawing and sizing to obtain a fifth titanium alloy bar with a fifth diameter, and the fifth diameter is smaller than the fourth diameter;

[0042] S7. Precision drawing: Draw the fifth titanium alloy bar through a polycrystalline diamond drawing die to a target diameter to obtain a titanium alloy welding wire, and the target diameter is smaller than the fifth diameter.

[0043] Specifically, S1. Continuous cold rolling refers to a processing method in which metal materials are continuously and cyclically rolled and deformed at room temperature through a three-roll mill, and the roll gap of each pass of the rolling mill is gradually reduced. Under the pressure of the rolls, the diameter of the titanium alloy bar gradually decreases and the length continuously increases, enabling automated and continuous production, and a large number of products can be processed in a short time. The titanium alloy bar continuously passes through multiple rolls in a multi-pass cold rolling mill without frequent loading, unloading, and intermediate processing, greatly shortening the production cycle and having high production efficiency. During multi-pass cold rolling, with each pass of rolling, the grains inside the material will break and deform, and as the number of passes increases, the grains are continuously refined. The refined grains can improve the comprehensive properties of the titanium alloy such as strength, toughness, and plasticity. At the same time, multi-pass cold rolling can also make the second-phase particles be more fully broken and evenly distributed, further improving the tissue properties of the material and meeting the performance requirements of titanium alloy welding wires in high-end fields.

[0044] The titanium alloy wire rod with the initial diameter is processed by a multi-pass cold rolling mill. The roll diameters and clearances of each pass of the rolling mill are gradually reduced to ensure that the diameter of the titanium alloy bar is uniformly reduced to the first diameter. During the rolling process, special lubricants such as special rolling oil for titanium alloy and a cooling system are used to reduce frictional heat and material deformation. After each pass of rolling, a laser diameter gauge is used to on-line detect the diameter and surface quality of the titanium alloy bar to ensure dimensional accuracy.

[0045] S2. A vacuum annealing furnace or a protective atmosphere annealing furnace, such as argon protection, is used to avoid oxidation of the surface of the titanium alloy bar. Through the annealing treatment, the internal stress generated during the cold rolling process is eliminated, the grains are refined, and the plasticity and toughness of the material are improved. After annealing, hardness testing and metallographic analysis are carried out on the titanium alloy bar to ensure tissue uniformity.

[0046] S3. After annealing restores the plasticity of the titanium alloy bar and eliminates the internal stress, continuous precision drawing can further refine the grains, make the structure more compact, and can continue to improve the strength and hardness of the material to a certain extent. The diameter of the titanium alloy bar is further reduced to the second diameter, making it close to the target size, and improving the surface finish and dimensional accuracy of the titanium alloy bar. Precision drawing can more precisely control the size of the annealed titanium alloy wire rod and produce products with higher dimensional accuracy. At the same time, the drawing process can improve the surface quality of the wire rod and make the surface smoother. The titanium alloy bar passes through multiple dies with decreasing diameters in sequence. The diameter reduction rate of each pass of drawing is gradually reduced. Each time of continuous precision drawing passes through 3 to 5 dies at the same time. The total compression ratio Q of each cold continuous drawing can reach a maximum of 60%. During the drawing process, lubricants and a cooling system are used to reduce friction and material damage. Continuous precision drawing replaces single-pass drawing, and the efficiency is 3 to 5 times higher than that of single-pass drawing where only one die is passed through each time.

[0047] S4. The titanium alloy bar passes through multiple sets of rough grinding tools in sequence. During the rough grinding process, a coolant and a dust removal system are used to reduce heat and dust. The surface roughness of the third titanium alloy bar obtained after rough grinding is 80 to 100 μm. The oxide scale and defects on the surface of the titanium alloy bar are removed by rough grinding to provide a good surface basis for subsequent fine grinding. The diameter of the third titanium alloy bar obtained after rough grinding is the third diameter. The rough grinding tools are made of high-hardness materials such as diamond grinding wheels or steel brushes. The number of sets of rough grinding tools is not limited, and 10 sets, 12 sets or other numbers of sets are all acceptable.

[0048] S5. The titanium alloy bar passes through multiple groups of precision grinding tools in sequence. During the grinding process, a coolant and a dust removal system are used to ensure the surface quality. The diameter of the fourth titanium alloy bar obtained after grinding is the fourth diameter, and the surface roughness of the fourth titanium alloy bar is 0.25 - 0.35 μm. Through mechanical precision grinding, the surface finish of the titanium alloy bar is improved, and the dimensional accuracy is further enhanced, providing high-quality materials for subsequent processes. Among them, the precision grinding tools adopt ultra-fine grain materials, such as high-mesh sand belts. The high-mesh sand belts are symmetrically arranged. The symmetrical arrangement is beneficial to applying uniform pressure and friction force to the titanium alloy bar during the polishing process, ensuring that all parts of the surface of the titanium alloy bar can be evenly polished, and avoiding the situation of excessive or insufficient local polishing. Using high-mesh sand belts for polishing can make the surface of the titanium alloy welding wire obtain higher finish and accuracy, reduce surface micro-defects and roughness, and make the surface of the welding wire smoother and flatter.

[0049] S6. Since the roundness of the titanium alloy welding wire is poor after rough grinding and precision grinding, it is necessary to adjust the roundness of the welding wire. The main function of this step is not to reduce the diameter, but to adjust the roundness of the welding wire to meet the use requirements. The roundness of the roller die drawing gauge is achieved by drawing and rounding the titanium alloy bar through multiple groups of three-roll Y-type rolling mills, making its diameter more uniform and the roundness higher. During the operation, the titanium alloy bar passes through multiple groups of three-roll Y-type rolling mills in sequence, and the reduction ratio of each pass is gradually reduced. During the rolling process, lubricants and a cooling system are also used to reduce friction and material damage. The multiple groups of three-roll Y-type rolling mills are distributed at 120° to each other, and the number of groups of three-roll Y-type rolling mills is 3 - 12 groups.

[0050] S7. The purpose of precision drawing is to further improve the roundness and surface quality of the titanium alloy bar while meeting the use requirements, making the surface of the welding wire beautiful and bright. The titanium alloy bar passes through a polycrystalline diamond drawing die. The aperture accuracy of the drawing die is high, and finally the diameter of the titanium alloy bar is rounded to the target size, obtaining high-quality titanium alloy welding wire.

[0051] This application adopts continuous cold rolling, which can be automatically and continuously produced, greatly improving the processing efficiency of titanium alloy welding wire. The continuous precision drawing is 3 - 5 times more efficient than single-pass drawing. Continuous cold rolling and continuous precision drawing refine the grains and the second phase, annealing eliminates internal stress, rough grinding and precision grinding improve the surface quality and dimensional accuracy, and roller die drawing and rounding ensure uniform diameter and high roundness, finally obtaining high-quality welding wire. In addition, mechanical rough grinding replaces chemical corrosion to remove the oxide scale, precision grinding ensures the dimensional accuracy of the welding wire, the surface quality of the welding wire is more uniform, the welding processability is better, the production efficiency is improved, the production cost is reduced, and at the same time, the environmental pollution problem caused by chemical cleaning is avoided.

[0052] In a possible implementation manner, in S1, the single-pass compression ratio is 10% - 30%, and the rolling speed is less than or equal to 5 m / s.

[0053] Specifically, if the single-pass compression ratio exceeds 10% - 30%, it is too large and likely to cause a sharp increase in internal stress of the titanium alloy, resulting in defects such as cracks. Controlling it within 10% - 30% can ensure the integrity of the product. This compression ratio range, combined with a rolling speed less than or equal to 5 m / s, can evenly refine the grains inside the material, improving comprehensive properties such as strength, toughness, and plasticity. At the same time, it is convenient to precisely control the uniform reduction of the diameter of the titanium alloy bar. Combined with a laser diameter gauge, the dimensional accuracy can be ensured. In terms of production stability, a moderate compression ratio and a low rolling speed reduce the load on the rolling mill, reduce equipment failures and wear, ensure continuous and stable production, and improve the consistency of product quality.

[0054] In a possible implementation manner, in S2, the annealing temperature is 820°C - 830°C, and the holding time is 120 min - 130 min.

[0055] Specifically, setting the annealing temperature to 820°C - 830°C and the holding time to 120 min - 130 min, with the preferred annealing temperature being 825°C and the holding time being 125 min, can enable atoms to fully migrate and rearrange, effectively eliminating more than 80% of the internal stress in the titanium alloy bar after continuous cold rolling, and improving dimensional stability. It can also promote grain recrystallization, reduce the average grain size, increase the elongation, refine the grains, homogenize the structure, and improve plasticity and toughness. If the annealing temperature is too high, the activity of titanium alloy atoms intensifies, leading to abnormal grain growth, a decrease in the strength, hardness, and toughness of the material, an increase in surface oxidation, affecting appearance, corrosion resistance, and welding performance, and at the same time increasing energy consumption and equipment costs. If the annealing temperature is too low, the activity of atoms is weak, the internal stress is not completely eliminated, it is prone to deformation and cracking subsequently, and the recrystallization is insufficient, resulting in poor grain refinement and structure homogenization effects, and unable to effectively improve plasticity and toughness. If the holding time is too long, it will cause excessive grain growth, increased energy consumption, and reduced production efficiency. If the holding time is too short, the atomic diffusion is insufficient, the internal stress elimination and structure improvement do not meet the standards, affecting the material properties.

[0056] In a possible implementation manner, in S3, the die is a diamond-coated die, and calcium-based lubricating powder is used for lubrication during the drawing process.

[0057] Specifically, the matrix of the diamond-plated mold is cemented carbide, which has high hardness, high strength and good wear resistance. Diamond is the hardest substance known in nature. After the diamond coating is plated on the surface of the cemented carbide mold, the hardness of the mold is further improved. Its Vickers hardness can reach about 10,000 HV, which is several times or even dozens of times higher than the wear resistance of the uncoated cemented carbide mold. During the drawing process, it can withstand the intense friction between the titanium alloy strip and the mold, effectively reduce the wear of the mold, greatly extend the service life of the mold, and reduce production costs. At the same time, the diamond coating has an extremely low friction coefficient, generally between 0.05 and 0.1, which greatly reduces the friction between the titanium alloy wire and the mold during drawing, reduces the pulling force, thereby improving the drawing efficiency, and helps to improve the surface quality of the titanium alloy wire, reducing surface scratches and cracks and other defects. Calcium-based lubricating powder is made of fatty acid calcium soap as a thickener and thickened mineral oil. During the drawing process, the calcium-based lubricating powder can form a continuous and stable lubricating film between the titanium alloy strip and the diamond-plated mold. This lubricating film has good pressure resistance and adsorption properties, which can effectively isolate the direct contact between the wire and the mold, further reduce the friction coefficient, reduce the drawing force and mold wear. Moreover, the calcium-based lubricating powder has a certain heat resistance. In the high temperature environment caused by friction during the drawing process, it can still maintain good lubrication performance, prevent adhesion and bite between the titanium alloy strip and the mold surface due to high temperature, and ensure the smooth progress of the drawing process. In addition, the cost of calcium-based lubricating powder is relatively low and easy to use, which helps to improve the economic benefits of production. The combination of diamond-plated molds and calcium-based lubricating powder makes the titanium alloy strip more uniformly stressed and more stable in deformation during the drawing process, which can improve the dimensional accuracy and shape accuracy of the titanium alloy strip, so that its diameter tolerance is controlled within a very small range and the roundness is more accurate. At the same time, good lubrication and low friction reduce the damage to the surface of the titanium alloy strip and improve its surface finish.

[0058] In a possible implementation, in S4, the rough grinding speed is 2.0 m / s to 5.0 m / s, and the surface roughness of the third titanium alloy strip is 80 to 100 μm; in S5, the fine grinding speed is 2.0 m / s to 5.0 m / s, and the surface roughness of the fourth titanium alloy strip is 0.25 to 0.35 μm.

[0059] Specifically, rough grinding is used to remove oxide scale and defects on the surface of titanium alloy strips. If the speed exceeds 5.0m / s, the grinding force and heat generated will increase significantly, which may cause defects such as burns and cracks on the surface of the titanium alloy strips, affecting subsequent processing. If the speed is lower than 2.0m / s, the efficiency is too low and local roughness differences may occur due to uneven grinding. Controlling it at 2.0m / s`5.0m / s can ensure the grinding efficiency while making the surface roughness reach the appropriate range, providing a good foundation for subsequent fine grinding.

[0060] Fine grinding is used to improve surface finish and dimensional accuracy. This speed range can ensure that high - mesh abrasive belts can finely polish titanium alloy bars. If the speed is too fast, the contact time between the abrasive belt and the titanium alloy bar will be too short, making it difficult to achieve the ideal surface finish. If the speed is too slow, the efficiency will be low. After fine grinding at this speed, the surface roughness value is smaller and the surface is smoother and flatter.

[0061] In a possible implementation, in S4, the included angle between adjacent rough grinding tool groups is 30° - 60°.

[0062] Specifically, multiple groups of rough grinding tools are pairwise opposite to form grinding tool pairs, and the included angle between adjacent grinding tool pairs is 30° - 60°. Such a layout enables the welding wire to be affected by the steel brushes at various angles during the process of passing through the steel brush pairs, and can remove the surface scale more comprehensively and evenly.

[0063] In a possible implementation, in S6, the speed of drawing the gauge circle is 2.0 m / s - 5.0 m / s.

[0064] Specifically, if the speed exceeds 5.0 m / s, the titanium alloy bar passes quickly through the three - roll Y - type rolling mill. The pressure and deformation force applied by the rolls act for too short a time, making it difficult to fully uniformize the diameter and improve the roundness. The roundness error may exceed ±0.03 mm. If the speed is lower than 2.0 m / s, the processing efficiency is low. In the range of 2.0 m / s - 5.0 m / s, the rolls can fully act on the titanium alloy bar, controlling the roundness error within ±0.01 mm and the diameter tolerance within ±0.02 mm, effectively ensuring the shape and dimensional accuracy of the product. In addition, too fast a speed will cause uneven stress distribution inside the material, reducing properties such as the strength and toughness of the material. Too slow a speed may make the processing cycle longer and increase the risk of the material being affected by external factors. Drawing the gauge circle within this speed range can evenly release the internal stress of the material and ensure the stability of the material properties.

[0065] In a possible implementation, in S7, the drawing speed is 1.0 m / s - 4.0 m / s, and the reduction ratio is 5% - 20%.

[0066] Specifically, if the drawing speed is higher than 4.0 m / s, when the titanium alloy bar passes through the polycrystalline diamond drawing die, due to the too fast speed, the drawing force changes greatly instantaneously, and it is difficult to accurately control the size. If the speed is lower than 1.0 m / s, although the dimensional accuracy is easy to guarantee, the production efficiency is extremely low. Controlling the speed between 1.0 m / s and 4.0 m / s can make the titanium alloy bar pass through the drawing die smoothly and accurately control the diameter. If the reduction ratio exceeds 20%, the single deformation amount is too large, which easily causes uneven deformation of the titanium alloy bar and affects the dimensional accuracy; if the reduction ratio is lower than 5%, multiple drawing operations are required to reach the target size, resulting in low efficiency and possible dimensional cumulative error. At a reduction ratio of 5% - 20%, the deformation amount of each drawing is moderate, and the titanium alloy bar can be gradually and accurately drawn to the target size, ensuring the consistency and accuracy of the diameter.

[0067] In a possible implementation manner, after S7, it further includes:

[0068] Performing ultrasonic cleaning of the titanium alloy welding wire with clear water, and drying the titanium alloy welding wire after the cleaning is completed.

[0069] Specifically, after obtaining the titanium alloy welding wire, ultrasonic cleaning of the titanium alloy welding wire with clear water is performed. The ultrasonic cleaning with clear water utilizes the cavitation effect generated by ultrasonic waves in the liquid, which can penetrate into the tiny pores and grooves on the surface of the titanium alloy welding wire, effectively removing impurities such as calcium-based lubricating powder, metal debris, and oil stains remaining during the drawing process. The ultrasonic technology in this application adopts the multi-frequency ultrasonic cleaning technology, that is, ultrasonic waves with different frequencies act on the surface of the titanium alloy welding wire simultaneously to ensure that impurities of different sizes can be effectively removed. Compared with ordinary cleaning methods, ultrasonic cleaning has a higher cleanliness, and can reduce the impurity residue rate on the surface of the welding wire to less than 0.1%, ensuring the purity of the surface of the welding wire.

[0070] Drying the titanium alloy welding wire after cleaning can quickly remove the moisture on the surface of the welding wire and prevent the titanium alloy from undergoing oxidation corrosion in a humid environment. The presence of moisture will accelerate the reaction between the titanium alloy and oxygen in the air, forming an oxide film and reducing the corrosion resistance of the welding wire. After drying, the moisture content on the surface of the welding wire can be reduced to less than 0.01%, greatly extending the storage period of the welding wire, reducing quality problems caused by corrosion, and ensuring the performance stability of the welding wire during storage and use.

[0071] The dried titanium alloy welding wire is wound. The wound welding wire is easy to classify, label, and inventory. It can be neatly arranged according to information such as the specifications, models, and batches of the welding wire, facilitating the staff to quickly find and retrieve the required welding wire.

[0072] In a possible implementation manner, the drying temperature of the titanium alloy welding wire after cleaning is 160°C - 170°C.

[0073] Specifically, the drying temperature of the titanium alloy welding wire after ultrasonic cleaning is controlled at 160°C to 170°C, and the preferred drying temperature is 165°C. The appropriate drying temperature enables the drying process to proceed quickly and stably, without causing the drying time to be too long due to too low a temperature, which affects the production progress, nor will it cause problems such as equipment failures due to too high a temperature. In large-scale production, it can ensure the smooth progress of the production process and improve the overall production efficiency.

[0074] The present application also provides a set of high-efficiency and environmentally friendly processing and manufacturing equipment for titanium alloy welding wires, which is applied to the high-efficiency and environmentally friendly processing and manufacturing method of the titanium alloy welding wires described in the present application. The equipment set includes:

[0075] A continuous cold rolling equipment, which is used to perform multi-pass continuous cold rolling on the titanium alloy bar to be processed to gradually reduce its diameter to obtain a first titanium alloy bar with a first diameter;

[0076] An annealing treatment equipment, which is used to perform annealing treatment on the first titanium alloy bar;

[0077] A continuous precision drawing equipment, which is used to perform drawing on the first titanium alloy bar after annealing treatment in sequence with gradually decreasing diameters to obtain a second titanium alloy bar with a second diameter, and the second diameter is smaller than the first diameter;

[0078] A mechanical rough grinding equipment, which is used to perform rough grinding on the second titanium alloy bar passing through it to remove the oxide skin on the surface of the second titanium alloy bar to obtain a third titanium alloy bar with a third diameter, and the third diameter is smaller than the second diameter;

[0079] A mechanical precision grinding equipment, which is used to perform surface polishing on the third titanium alloy bar passing through it to obtain a fourth titanium alloy bar with a fourth diameter, and the fourth diameter is smaller than the third diameter;

[0080] A roll die drawing and sizing equipment, which is used to perform drawing and sizing on the fourth titanium alloy bar passing through it to obtain a fifth titanium alloy bar with a fifth diameter, and the fifth diameter is smaller than the fourth diameter;

[0081] A precision drawing equipment, which is used to draw the fifth titanium alloy bar to a target diameter to obtain a titanium alloy welding wire, and the target diameter is smaller than the fifth diameter.

[0082] Specifically, the continuous cold rolling equipment is a three-roll mill. The rolls of the three-roll mill in this application are made of chromium molybdenum alloy steel added with rare earth elements. Among them, the types and contents of rare earth elements are: two rare earth elements, cerium with a mass fraction of 0.3%-0.5% and yttrium with a mass fraction of 0.1%-0.3%. The wear resistance of the roll surface is high. The rare earth elements cerium and yttrium refine the grain structure of the alloy, making the microstructure of the roll surface more uniform and fine. The uniform structure reduces the microscopic protrusions and depressions on the surface, reduces the local stress concentration when the roll contacts the titanium alloy strip, makes the friction force distribution more uniform, avoids the rolling instability caused by the sudden change of friction force, and further reduces the defects such as scratches on the surface of the titanium alloy strip due to uneven stress.

[0083] Annealing treatment equipment. The annealing treatment equipment is a vacuum annealing furnace or a protective atmosphere annealing furnace, and the protective atmosphere is such as argon to avoid the oxidation of the surface of the titanium alloy strip.

[0084] Continuous precision drawing equipment. The continuous precision drawing equipment includes multiple sets of dies with different drawing diameters, and the material of the dies is polycrystalline diamond. The diameter of each set of dies is different. When in use, the titanium alloy strip is drawn successively through the dies from the largest diameter to the smallest diameter. The surface of the die in the continuous precision drawing equipment that contacts the titanium alloy strip has been treated with a super-smooth surface, and the plasma treatment technology is adopted. The high-energy particles in the plasma are used to bombard and etch the surface of the polycrystalline diamond of the continuous precision drawing equipment. The ions and free radicals in the plasma have sufficient energy to break the chemical bonds on the diamond surface and remove the microscopic protrusions and impurities on the surface. At the same time, the plasma treatment can also improve the chemical properties of the diamond surface, making it more uniform and stable. For example, in an argon plasma environment, high-energy argon ions bombard the diamond surface, removing the tiny defects and pollutants on the surface and making the surface smoother and flatter. The super-smooth surface can significantly reduce the friction force between the titanium alloy strip and the drawing die during the drawing process. When the surface roughness is reduced to the nanometer level, the actual contact area between the titanium alloy strip and the die surface is greatly reduced, and the friction coefficient can be reduced to half or even lower than the original. It not only reduces the requirement for drawing force, reduces energy consumption, but also can increase the drawing speed, thereby improving production efficiency.

[0085] Mechanical rough grinding equipment. The mechanical rough grinding equipment includes multiple sets of rough grinding tools, and the rough grinding tools are made of high-hardness materials, such as diamond grinding wheels or steel brushes. The surface roughness of the titanium alloy strip after rough grinding is 80-100 μm.

[0086] Mechanical fine grinding equipment. The mechanical rough grinding equipment includes symmetrically arranged fine grinding tools, and the fine grinding tools are made of ultra-fine grain materials, such as high-mesh sand belts. Using high-mesh sand belts for polishing can make the surface of the titanium alloy wire obtain higher smoothness and precision, reduce surface micro-defects and roughness, and make the wire surface smoother and flatter. The surface roughness of the titanium alloy bar after fine grinding is 0.25 - 0.35 μm.

[0087] Roll die drawing and sizing equipment. The roll die drawing and sizing equipment includes multiple groups of three-roll Y-type rolling mills. The rolls of the three-roll Y-type rolling mills are made of high-performance tungsten carbide hard alloy. Tungsten carbide hard alloy has extremely high hardness and wear resistance, can maintain a stable shape during long-term drawing, and reduce the decline in roundness adjustment accuracy caused by wear. High-precision rolling bearings are respectively installed at both ends of each roll. The bearings have the characteristics of low friction coefficient and high rotation accuracy, can ensure the stability of the roll during high-speed rotation, and reduce the influence of vibration on the roundness adjustment of the wire.

[0088] Precision drawing equipment. The precision drawing equipment is a polycrystalline diamond drawing die. The dimensional tolerance of the inner hole of the polycrystalline diamond drawing die is within ±0.001 mm, and the surface roughness Ra is below 0.02 μm, which can ensure that the titanium alloy bar can obtain uniform deformation and good surface quality during the drawing process.

[0089] The present application is further illustrated by the following embodiments.

[0090] Using the solution in the present application, TC4 titanium alloy wires with diameters of φ1.6 mm and φ1.2 mm are respectively prepared, and the quality of the wires is evaluated according to GB / T30562 - 2014 Quality Classification of Titanium and Titanium Alloy Wires. Table 1 shows the wire quality grade indicators.

[0091] Table 1 Wire quality grade indicators

[0092]

[0093] Example 1

[0094] 1. Prepare a TC4 titanium alloy wire with a diameter of φ1.9 mm

[0095] 1.1. Continuous cold rolling: The TC4 titanium alloy thick wire blank with a diameter of 6 mm is rolled to 3.46 mm through a three-roll rolling mill once, and the rolling speed is 3 m / s. The surface of the wire is smooth and uniform, and the roundness of the wire is less than 0.04 mm. The actual size of the semi-finished product is φ3.42 mm;

[0096] 1.2. Heat treatment: Heat treatment is carried out in a conventional annealing furnace, the annealing temperature is 830 °C, and the holding time is 2 hours;

[0097] 1.3. Continuous precision drawing: The φ3.42 mm TC4 titanium alloy wire is cold continuously drawn to φ2.29 mm through dies of 3.15 mm, 2.90 mm, 2.68 mm, 2.47 mm, and 2.28 mm on a continuous drawing equipment. Calcium-based lubricating powder is used for lubrication. The die is a diamond-coated die. The continuous precision drawing speed is 2.5 m / s. After drawing, the surface of the wire is smooth and uniform, without burrs, pits and other defects. The roundness of the wire is less than 0.01 mm. The actual size of the semi-finished product is φ2.29 mm;

[0098] 1.4. Mechanical rough grinding: The TC4 titanium alloy welding wire with a diameter of 2.29 mm is successively passed through 12 groups of rough grinding steel brush pairs distributed at 60° to remove the oxide scale on the surface of the welding wire. The grinding speed for rough grinding to remove the oxide scale is 4.0 m / s. After rough grinding, there is no residual oxide scale and no oil stain on the surface of the wire. The roundness of the wire is less than 0.05 mm. The actual size of the semi-finished product is φ2.14 mm, and the surface roughness is 80 - 100 μm;

[0099] 1.5. Mechanical fine grinding: The TC4 titanium alloy welding wire with a diameter of 2.14 mm is successively passed through 20 groups of symmetrically arranged high-mesh sand belts for surface polishing. The fine grinding speed is 3.0 m / s. After fine grinding, the surface of the wire has a bright metallic luster, no oil stain, no burr defects. The roundness of the wire is less than 0.04 mm. The actual size of the semi-finished product is φ2.0 mm, and the surface roughness is 0.25 - 0.35 μm;

[0100] 1.6. Roll die drawing: The TC4 titanium alloy welding wire with a diameter of φ2.0 mm is successively passed through 6 groups of three-roll die sets distributed at 120° to adjust the roundness of the welding wire. The speed of the roll die drawing for sizing is 5.0 m / s. After drawing, the diameter of the wire is 1.65 mm, the roundness after roll die drawing is 0.02 mm, and the surface roughness is 0.2 - 0.3 μm;

[0101] 1.7. Precision drawing: The TC4 wire with a diameter of 1.65 mm is drawn to 1.60 mm through a polycrystalline diamond drawing die. The drawing speed is 2.0 m / s, and the surface roughness is 0.15 - 0.25 μm;

[0102] 1.8. Ultrasonic cleaning and drying: The TC4 titanium alloy wire with a diameter of 1.60 mm is ultrasonically cleaned with clean water online, which can achieve no acid-base discharge. After cleaning, it is dried and wound online. The drying temperature is 160 °C;

[0103] 1.9. Layer winding and packaging.

[0104] 2. Quality inspection of φ1.6 mm TC4 titanium alloy welding wire

[0105] The finished product quality of the TC4 titanium alloy welding wire with a diameter of φ1.6mm is shown in Table 2 and Table 3. The welding equipment uses an Austrian Fronius TPS400i semi-automatic welding machine; the base metal of the welding test plate is made of TC4 titanium alloy plate with a thickness of 10mm, with a Y-shaped groove (70°) opened, and after degreasing and removing the oxide film treatment, a drag shield is used to protect the weld; the diameter of the titanium alloy welding wire is φ1.6mm, the welding current is 270 - 290A, the welding voltage is 30V, the welding speed is 0.9cm / s, and the flow rate of argon (purity 99.99%) is: 22L / min for the welding torch, 25 - 30L / min for the drag shield, and 30 - 40L / min for the back side.

[0106] Table 2 External Quality Inspection of Titanium Alloy Welding Wire

[0107]

[0108] Table 3 Internal Quality Inspection Items of Titanium Alloy Welding Wire

[0109]

[0110] Result Evaluation:

[0111] The external quality (score) is 97 (≥95), the average qualified rate of each root is 100% (≥95%), and the appearance shape is uniform, neat, bright, and beautiful; after the internal quality inspection, the chemical composition analysis is in line, the mechanical properties of the welding wire meet the use requirements, the coil diameter of the welding wire is 2200mm (≥D + 20), and the warp distance of the welding wire is 13mm (≤30mm). Therefore, it can be determined that the TC4 titanium alloy welding wire with a diameter of φ1.6mm is of excellent quality.

[0112] Example 2

[0113] 1. Prepare the TC4 titanium alloy welding wire with a diameter of φ1.2mm

[0114] 1.1 Continuous cold rolling: The TC4 titanium alloy thick wire blank with a diameter of 6mm is rolled to 2.90mm at one time by a three-roll mill, and the rolling speed is 3m / s. The surface of the wire is smooth and uniform, and the roundness of the wire is less than 0.04mm. The actual size of the semi-finished product is φ2.85mm;

[0115] 1.2 Heat treatment: Heat treatment is carried out in a conventional annealing furnace, the annealing temperature is 830°C, and the holding time is 2 hours;

[0116] 1.3. Continuous precision drawing: The φ2.85mm TC4 titanium alloy wire is continuously precision drawn to φ1.90mm through dies of 2.63mm, 2.42mm, 2.23mm, 2.06mm, and 1.90mm on a continuous drawing equipment. Calcium-based lubricating powder is used for lubrication. The die is a diamond-coated die. The continuous precision drawing speed is 2.5m / s. After drawing, the surface of the wire is smooth and uniform, without burrs, pits and other defects. The roundness of the wire is less than 0.01mm. The actual size of the semi-finished product is φ1.89mm;

[0117] 1.4. Mechanical rough grinding: The TC4 titanium alloy welding wire with a diameter of 1.89mm is successively passed through 12 groups of rough grinding steel brushes distributed at 60° to remove the oxide scale on the surface of the welding wire. The grinding speed for rough grinding to remove the oxide scale is 4.0m / s. After rough grinding, there is no residual oxide scale and no oil stain on the surface of the wire. The roundness of the wire is less than 0.05mm. The actual size of the semi-finished product is φ1.74mm, and the surface roughness is 80 - 100μm;

[0118] 1.5. Mechanical fine grinding: The TC4 titanium alloy welding wire with a diameter of 1.74mm is successively passed through 20 groups of symmetrically arranged high-mesh sand belts for surface polishing. The fine grinding speed is 3.0m / s. After fine grinding, the surface of the wire has a bright metallic luster, no oil stain, no burr defects. The roundness of the wire is less than 0.04mm. The actual size of the semi-finished product is φ1.60mm, and the surface roughness is 0.25 - 0.35μm;

[0119] 1.6. Roll die drawing: The TC4 titanium alloy welding wire with a size of φ1.60mm is successively passed through 6 groups of three-roll dies distributed at 120° to adjust the roundness of the welding wire. The speed of the roll die drawing for sizing is 5.0m / s. After drawing, the diameter of the wire is 1.25mm, the roundness after roll die drawing is 0.02mm, and the surface roughness is 0.2 - 0.3μm;

[0120] 1.7. Precision drawing: The TC4 wire with a diameter of 1.65mm is drawn to 1.20mm through a polycrystalline diamond drawing die. The drawing speed is 2.5m / s, and the surface roughness is 0.15 - 0.25μm;

[0121] 1.8. Ultrasonic cleaning and drying: The TC4 titanium alloy wire with a diameter of 1.20mm is ultrasonically cleaned with clean water online, which can achieve no acid-base discharge. After cleaning, it is dried and wound online. The drying temperature is 160°C;

[0122] 1.9. Layer winding and packaging.

[0123] 2. Quality inspection of φ1.2mm TC4 titanium alloy welding wire

[0124] The finished product quality of the TC4 titanium alloy welding wire with a diameter of φ1.2mm is shown in Table 2 and Table 3. The welding equipment used is the Austrian Fronius TPS400i semi-automatic welding machine; the base metal of the welding test plate is TC4 titanium alloy plate with a thickness of 10mm, a Y-shaped groove (70°) is opened, and after degreasing and removing the oxide film treatment, a trailing shield is used to protect the weld; the diameter of the titanium alloy welding wire is φ1.2mm, the welding current is 235 - 255A, the welding voltage is 28V, the welding speed is 0.7cm / s, and the flow rate of argon (purity 99.99%) is: 22L / min for the welding torch, 25 - 30L / min for the trailing shield, and 30 - 40L / min for the back side.

[0125] Table 2 External Quality Inspection of Titanium Alloy Welding Wire

[0126]

[0127] Table 3 Internal Quality Inspection Items of Titanium Alloy Welding Wire

[0128]

[0129]

[0130] Result Evaluation:

[0131] The external quality (score) is 97 (≥95), the average qualified rate per root is 100% (≥95%), and the appearance shape is uniform, neat, bright, and beautiful; after the internal quality inspection, the chemical composition analysis is in line, the mechanical properties of the welding wire meet the use requirements, the coil diameter of the welding wire is 2500 (≥D + 20), and the warp distance of the welding wire is 18mm (≤30mm). Therefore, it can be determined that the TC4 titanium alloy welding wire with a diameter of φ1.2mm is of excellent quality.

[0132] In summary, for the TC4 titanium alloy welding wires with diameters of φ1.6mm and φ1.2mm prepared in Example 1 and Example 2, the product quality has reached the excellent product standard. The two examples verify the high efficiency, stability, and scalability of this process, which is applicable to the production of titanium alloy welding wires of different specifications.

[0133] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A highly efficient and environmentally friendly processing and manufacturing method for titanium alloy welding wire, characterized in that: The following steps are involved: S1, continuous cold rolling: continuously cold rolling the titanium alloy strip to be processed through a three-roll rolling mill, gradually reducing its diameter in the three-roll rolling mill to obtain a first titanium alloy strip with a first diameter; S2, annealing: annealing the first titanium alloy strip; S3, continuous fine drawing: drawing the first titanium alloy strip after annealing through a plurality of dies with decreasing diameters in sequence to obtain a second titanium alloy strip with a second diameter, wherein the second diameter is smaller than the first diameter; S4, mechanical rough grinding: sequentially inserting the second titanium alloy strip into a plurality of groups of rough grinding tools for rough grinding to remove oxide scale on the surface of the second titanium alloy strip, thereby obtaining a third titanium alloy strip having a third diameter, wherein the third diameter is smaller than the second diameter; S5, mechanical fine grinding: sequentially inserting the third titanium alloy strip into a plurality of groups of fine grinding tools for fine grinding, so as to perform surface polishing on the third titanium alloy strip to obtain a fourth titanium alloy strip having a fourth diameter, wherein the fourth diameter is smaller than the third diameter; S6, roller die drawing and rounding: sequentially passing the fourth titanium alloy strip through a plurality of three-roller Y-type rolling mills for drawing and rounding to obtain a fifth titanium alloy strip with a fifth diameter, wherein the fifth diameter is smaller than the fourth diameter; S7, precision drawing: drawing the fifth titanium alloy strip through a polycrystalline diamond drawing die to a target diameter to obtain a titanium alloy welding wire, wherein the target diameter is smaller than the fifth diameter.

2. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In S1, the single-pass compression rate is 10% to 30%, and the rolling speed is less than or equal to 5 m / s.

3. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In S2, the annealing temperature is 820°C to 830°C, and the holding time is 120min to 130min.

4. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In S3, the die is a diamond-plated die, and calcium-based lubricating powder is used for lubrication during the drawing process.

5. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In S4, the rough grinding speed is 2.0m / s-5.0m / s, and the surface roughness of the third titanium alloy strip is 80-100μm; in S5, the fine grinding speed is 2.0m / s-5.0m / s, and the surface roughness of the fourth titanium alloy strip is 0.25-0.35μm.

6. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In the above S4, the angle between adjacent rough grinding tool groups is 30° to 60°.

7. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In S6, the speed of drawing the gauge circle is 2.0 m / s to 5.0 m / s.

8. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1 is characterized in that: In the above S7, the drawing speed is 1.0 m / s to 4.0 m / s, and the compression rate is 5% to 20%.

9. The high-efficiency and environmentally friendly processing and manufacturing method of titanium alloy welding wire according to claim 1, characterized in that: After S7, the method further includes: The titanium alloy welding wire is cleaned with ultrasonic water, and the cleaned titanium alloy welding wire is dried at a temperature of 160° C. to 170° C.

10. A high-efficiency and environmentally friendly processing and manufacturing equipment set for titanium alloy welding wire, characterized in that: The high-efficiency and environmentally friendly processing and manufacturing method for the titanium alloy welding wire according to any one of claims 1 to 9, wherein the equipment group comprises: Continuous cold rolling equipment, the continuous cold rolling equipment is used to perform multiple passes of continuous cold rolling on the titanium alloy strip to be processed to gradually reduce its diameter to obtain a first titanium alloy strip with a first diameter; An annealing treatment device, wherein the annealing equipment is used to perform an annealing treatment on the first titanium alloy strip; A continuous fine drawing device, wherein the continuous fine drawing device is used to sequentially draw the first titanium alloy strip after annealing with decreasing diameters to obtain a second titanium alloy strip with a second diameter, wherein the second diameter is smaller than the first diameter; A mechanical rough grinding device, wherein the mechanical grinding device is used to perform rough grinding on the second titanium alloy strip inserted therein to remove oxide scale on the surface of the second titanium alloy strip to obtain a third titanium alloy strip having a third diameter, wherein the third diameter is smaller than the second diameter; A mechanical fine grinding device, wherein the mechanical fine grinding device is used to perform surface polishing on the third titanium alloy strip inserted therein to obtain a fourth titanium alloy strip having a fourth diameter, wherein the fourth diameter is smaller than the third diameter; A roller die drawing and rounding device, wherein the roller die drawing and rounding device is used to draw and round the fourth titanium alloy strip inserted therein to obtain a fifth titanium alloy strip having a fifth diameter, wherein the fifth diameter is smaller than the fourth diameter; Precision drawing equipment is used to draw the fifth titanium alloy strip to a target diameter to obtain a titanium alloy welding wire, and the target diameter is smaller than the fifth diameter.

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