CN110777283A - Titanium alloy for arc fuse additive manufacturing and preparation method thereof - Google Patents
Titanium alloy for arc fuse additive manufacturing and preparation method thereof Download PDFInfo
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- CN110777283A CN110777283A CN201910710926.2A CN201910710926A CN110777283A CN 110777283 A CN110777283 A CN 110777283A CN 201910710926 A CN201910710926 A CN 201910710926A CN 110777283 A CN110777283 A CN 110777283A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
Abstract
The invention relates to a titanium alloy for manufacturing an arc fuse additive and a preparation method thereof, wherein the titanium alloy for manufacturing the arc fuse additive comprises the following components in percentage by mass: 85.2 to 90.9 percent of Ti, 5.25 to 6.73 percent of Al, 3.31 to 4.46 percent of V and 1.0 to 5.0 percent of Ni, wherein the addition of the nickel element can effectively reduce the melting point of the titanium alloy, improve the resistivity of a welding wire, improve the oxidation resistance of the titanium alloy in a welding protective atmosphere and improve the machinability of a printing piece, namely the deformation resistance of the printing piece in later processing; the strength of the prepared nickel-containing TC4 titanium alloy is close to that of TC4 titanium alloy, the plasticity is good, and the welding performance of the processed welding wire is obviously improved compared with that of a TC4 titanium alloy welding wire.
Description
Technical Field
The invention relates to the technical field of titanium alloy materials, in particular to a titanium alloy for manufacturing an arc fuse additive and a preparation method thereof.
Background
The titanium alloy has the advantages of high specific strength, corrosion resistance, high temperature resistance, no toxicity, no magnetism and the like, and can be widely used as a structural material, a corrosion-resistant material and a heat-resistant material to be applied to the fields of aerospace, ship manufacturing, petrochemical industry, ocean engineering, biomedicine and the like. At present, a new round of scientific and technical revolution and an industrial revolution are germinating in the global scope, and the additive manufacturing is taken as a new growth point of future industrial development in various countries in the world, so that the accelerated fusion of an additive manufacturing technology, an information network technology, a new material technology and a new design concept is promoted. The metal additive manufacturing technology becomes the key point of development of high and new fields, wherein the arc fuse additive manufacturing technology takes the arc as an energy-carrying beam, has high heat input and high forming speed, is suitable for low-cost, efficient and rapid near-net forming of large-size complex components, and further becomes a key development direction of the additive manufacturing technology. The TC4 titanium alloy is one of the most common structural materials of high-precision equipment, and must become a metal material for the intensive research and development of the electric arc additive manufacturing technology.
At present, the TC4 titanium alloy with a dual-phase structure has excellent comprehensive performance, the strength is mostly between 860 and 1020MPa, the melting point is in the range of 1538 and 1649 ℃, the welding performance of the TC4 titanium alloy is general due to the high-melting-point and easy-oxidation characteristics, the connectivity at the node is sharply reduced in the printing of a complex multi-contact component, and the welding defect is easy to occur, so that the application of the TC4 titanium alloy in the arc fuse additive manufacturing technology is severely limited. In addition, the TC4 titanium alloy has poor cold working performance, so that the production of qualified TC4 titanium alloy welding wires is difficult. These also affect the application of TC4 titanium alloy to arc fuse additive manufacturing techniques.
Disclosure of Invention
The invention aims to provide a novel titanium alloy with good weldability, good oxidation resistance, excellent comprehensive performance and good processability and a preparation method thereof.
In order to solve the technical problem, the titanium alloy for the additive manufacturing of the arc fuse comprises the following components in percentage by mass [ Ti89.7-91Al5.5-6.8V3.5-4.5]100-xNix (x is 1-5):
further preferably, the nickel-containing TC4 titanium alloy has the following composition:
a preparation method of a titanium alloy for arc fuse additive manufacturing comprises the following steps:
a. smelting alloy raw materials according to the component proportion of the nickel-containing TC4 titanium alloy to obtain an alloy ingot;
b. carrying out solid solution treatment and annealing treatment on the alloy ingot to obtain a solid solution alloy;
c. annealing the solid solution alloy to obtain a nickel-containing TC4 titanium alloy;
d. rolling a titanium alloy containing nickel TC4 → finishing a wire rod → inspecting → performing solution treatment → dipping a lubricating coating → drying → drawing → acid cleaning → finishing → inspecting → performing solution treatment → dipping a lubricating coating → drying → drawing → acid cleaning → performing solution treatment → inspecting → packaging → warehousing, and processing the titanium alloy into a welding wire with the diameter of 0.8-1.6 mm.
Further preferably, in the step a, the alloy raw material includes titanium, nickel, vanadium, aluminum, TC4 titanium alloy; the smelting adopts an electric arc smelting process of a non-consumable vacuum arc smelting furnace, and the smelting is carried out under the protection of inert atmosphere, wherein the inert atmosphere is argon, and the pressure is 0.05 MPa.
Further preferably, in the step b, the temperature of the solution treatment is 740-840 ℃, the time of the solution treatment is 0.5-2h, or a TC4 titanium alloy solution treatment process is adopted.
Further preferably, in the step c, the temperature of the annealing treatment is 450-550 ℃, the time of the annealing treatment is 2-4h, or a TC4 titanium alloy solution treatment process is adopted.
The invention has the beneficial effects that: the invention relates to a titanium alloy for manufacturing an arc fuse additive, which comprises the following components in percentage by mass: 85.2 to 90.9 percent of Ti, 5.25 to 6.73 percent of Al, 3.31 to 4.46 percent of V and 1.0 to 5.0 percent of Ni, wherein the addition of the nickel element can effectively reduce the melting point of the titanium alloy, improve the resistivity of a welding wire, improve the oxidation resistance of the titanium alloy in a welding protective atmosphere and improve the machinability of a printing piece, namely the deformation resistance of the printing piece in later processing; the strength of the prepared nickel-containing TC4 titanium alloy is close to that of TC4 titanium alloy, the prepared nickel-containing TC4 titanium alloy has good plasticity, the welding performance of the processed welding wire is obviously improved compared with that of a TC4 titanium alloy welding wire, and aiming at the technical characteristics of electric arc fuse additive manufacturing, the new titanium alloy needs to solve the following problems: a) the melting point is reduced, so that the viscosity and the surface tension of a metal molten pool during welding are reduced, good adhesion is realized, and the printing quality is improved; b) the resistivity of the welding wire is improved, the electric arc capacity during printing is increased, and the welding quality is improved; c) the oxidation resistance of the welding wire is improved, namely the oxidation resistance of a metal melting pool is improved under the welding protective atmosphere; d) the processing performance (high strength and low plasticity) of the printed piece is improved, namely the deformation resistance of subsequent processing is improved.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention provides a titanium alloy for manufacturing an arc fuse additive, which comprises the following components in percentage by mass [ Ti89.7-91Al5.5-6.8V3.5-4.5]100-xNix (x is 1-5):
in the present invention, all raw material components are titanium, aluminum, vanadium, TC4 titanium alloy and high purity nickel which are well known to those skilled in the art.
According to the mass percentage, the nickel-containing TC4 titanium alloy contains 85.2-90.9% of Ti, and preferably 86-90%.
According to the mass percentage, the nickel-containing TC4 titanium alloy contains 5.25-6.73% of Al, and preferably 5.5-6.0%.
According to the mass percentage, the nickel-containing TC4 titanium alloy contains 3.31-4.46% of V, and preferably 3.5-4.0%.
The nickel-containing TC4 titanium alloy contains 1.0-5.0% of Ni, preferably 1.5-3.0% by mass.
According to the invention, the nickel element has the characteristics of high strength, high toughness, good hardenability, high resistance, high corrosion resistance and the like, the addition of the nickel element can effectively reduce the melting point of the TC4 titanium alloy, improve the resistance rate of a welding wire, improve the oxidation resistance (under welding protective atmosphere) of the titanium alloy, and simultaneously improve the processability of a printed part, namely the deformation resistance during later processing of the printed part, and the strength of the prepared nickel-containing TC4 titanium alloy is close to that of the TC4 titanium alloy and has better plasticity. The welding performance of the processed welding wire is obviously improved compared with that of the TC4 titanium alloy welding wire.
In the invention, the alloy raw material is pretreated before the non-consumable vacuum arc smelting furnace smelting, the treatment comprises the steps of firstly carrying out sand blasting and polishing on the surfaces of titanium, aluminum and TC4 titanium alloy to eliminate impurities such as an oxide layer, then cleaning and polishing the surfaces by using alcohol, then carrying out drying treatment, and then carrying out batching, charging and smelting. The present invention does not have any particular limitation on the above-mentioned process, and a process known to those skilled in the art may be used.
In the invention, the smelting temperature of the non-consumable vacuum arc smelting furnace is preferably 2200 ℃ to 2500 ℃, and the smelting process can be well known by those skilled in the art.
In the invention, the smelting is preferably carried out under the protection of inert atmosphere, the invention adopts high-purity argon protection smelting, firstly, the furnace body is vacuumized and washed with gas until the vacuum degree reaches 2 x 10 < -3 > Pa, then 3000-4500Pa high-purity argon is filled, the washing process is repeated for 3-4 times, then 0.05MPa argon is filled, and then the smelting is started.
In the invention, the number of times of smelting is preferably 3-5, the time of each smelting is preferably 10-20 minutes, the specific method for smelting is not particularly limited, and the smelting can be carried out by adopting a method for smelting the Qinzhi alloy, which is well known to those skilled in the art.
In the invention, the temperature of the solution treatment is 740-840 ℃, the time of the solution treatment is 0.5-2h, the TC4 titanium alloy solution treatment process can be adopted, and the method can be well known by the technical personnel in the field.
In the invention, the temperature of the annealing treatment is 450-550 ℃, the time of the annealing treatment is 2-4h, and a TC4 titanium alloy solution treatment process can be adopted, and the method can be well known by those skilled in the art.
After the annealing is finished, the annealing product is preferably cooled, polished, cleaned and air-dried to obtain the nickel-containing TC4 titanium alloy. The cooling process is not particularly limited, and the alloy is cooled to room temperature by a cooling process known to those skilled in the art, and the cooling process can be specifically selected as furnace cooling in the invention.
In the present invention, the new TC4 titanium alloy after annealing is processed into a solder wire having a diameter of 0.8 to 1.6mm by the processes of rolling → rod finishing → inspection → solution treatment → dipping lubrication coating → drying → drawing → acid washing → solution treatment, etc., and the processes of rolling, drawing, etc. used may be those known to those skilled in the art.
The nickel-containing TC4 titanium alloy and the preparation method thereof according to the present invention will be described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The nominal composition of a titanium alloy ingot is designed to be Ti90.44Al5.25V3.31Ni1 (mass), 2000g of pretreated raw materials are put into a water-cooled copper orange pot in a non-consumable vacuum arc smelting furnace according to the proportion, then 3 times of gas washing (firstly vacuumizing to the vacuum degree of 2 x 10 < -3 > Pa, and then filling 3000Pa of high-purity argon), non-consumable vacuum smelting is carried out under the argon atmosphere with the pressure of 0.05MPa, the smelting temperature is 2500 ℃, the arc is stopped after smelting for 10 minutes, the arc is started again after the smelted body is solidified, and the alloy ingot is obtained by repeating the smelting process for 4 times. And carrying out solution treatment on the alloy ingot at 840 ℃ for 0.5 hour, and then cooling to room temperature along with the furnace. Annealing the solid solution alloy in an argon atmosphere at 550 ℃ for 2 hours, and cooling the alloy to room temperature along with the furnace. And (3) processing the alloy ingot after the annealing into a welding wire material with the diameter of 0.8-1.6mm by the processes of rolling → finishing of wire rod → inspection → solid solution treatment → dipping lubrication coating → drying → drawing → acid cleaning → solid solution treatment and the like, wherein the processes of rolling, drawing and the like can be adopted by the processes known by the technical personnel in the field. The results of the physical, comprehensive and electrical property analysis tests on the filaments are shown in Table 1. As can be seen from the table, the yield strength and the tensile strength of the titanium alloy are reduced compared with TC4(Ti90Al6V4), but the amplitude is not large, the density and the elongation rate are slightly improved, the melting point is reduced by 33 ℃ along with the introduction of nickel, the resistivity is obviously increased (6%), and the result indicates that the welding performance of the titanium alloy is improved.
Example 2
The nominal composition of a titanium alloy ingot is designed to be Ti89.1Al5.94V3.96Ni1 (mass), 1980g of pretreated TC4 titanium alloy (Ti90Al6V4, mass percent) and 20g of high-purity nickel particles are placed in a water-cooled cuprammonium pot in a non-consumable vacuum arc smelting furnace, then gas washing is carried out for 3 times (firstly, the titanium alloy is vacuumized to the vacuum degree of 2 x 10 < -3 > Pa, and then, 3000Pa of high-purity argon gas is charged), non-consumable vacuum smelting is carried out under the argon atmosphere with the pressure of 0.05MPa, the smelting temperature is 2400 ℃, the arc is stopped after 15 minutes of smelting, the arc is started again to be smelted after a smelted body is solidified, and the smelting process is repeated for 4 times to obtain an alloy ingot. And carrying out solution treatment on the alloy ingot at 820 ℃ for 0.8 hour, and then cooling the alloy ingot to room temperature along with the furnace. Annealing the solid solution alloy in an argon atmosphere at 520 ℃ for 2 hours, and cooling the alloy to room temperature along with the furnace. And (3) processing the alloy ingot after the annealing into a welding wire with the diameter of 0.8-1.6mm by the processes of rolling → finishing of a wire rod → inspection → solution treatment → dipping lubrication coating → drying → drawing → acid cleaning → solution treatment and the like, wherein the processes of rolling, drawing and the like which are well known by the technicians in the field can be adopted. The results of the physical, comprehensive and electrical property analysis tests on the filaments are shown in Table 1. As can be seen from the table, the yield strength and the tensile strength of the titanium alloy are further reduced compared with TC4(Ti90Al6V4), but the amplitude is still not large, the density and the elongation rate are further improved, the melting point is reduced by 22 ℃ along with the introduction of nickel, the resistivity is increased by about 10%, and the welding performance is further improved.
Example 3
The nominal composition of a titanium alloy ingot is designed to be Ti87Al6V4Ni3 (mass), 2000g of pretreated raw materials are put into a water-cooled copper orange pan in a non-consumable vacuum arc smelting furnace according to the mixture ratio, then gas washing is carried out for 4 times (firstly, the vacuum degree is vacuumized to be 2 x 10 < -3 > Pa, high-purity argon of 3000Pa is filled), non-consumable vacuum smelting is carried out under the argon atmosphere with the pressure of 0.05MPa, the smelting temperature is 2300 ℃, the arc is stopped after smelting for 20 minutes, the arc is restarted and the smelting is carried out again after a smelted body is solidified, and the alloy ingot casting is obtained by repeating the smelting process for 4 times. And carrying out solution treatment on the alloy ingot at 800 ℃ for 1 hour, and then cooling the alloy ingot to room temperature along with the furnace. Annealing the solid solution alloy in an argon atmosphere at the annealing temperature of 500 ℃ for 2.5 hours, and cooling the alloy to room temperature along with the furnace. And (3) processing the alloy ingot after the annealing into a welding wire with the diameter of 0.8-1.6mm by the processes of rolling → finishing of wire rod → inspection → solution treatment → dipping lubrication coating → drying → drawing → acid cleaning → solution treatment and the like, wherein the processes of rolling, drawing and the like can be adopted by the processes known by the technicians in the field. The results of physical, comprehensive and electrical property analysis tests on the filaments are shown in Table 1. As can be seen from the table, the yield strength and the tensile strength of the titanium alloy are further reduced compared with TC4(Ti90Al6V4), the density and the elongation are further improved along with the increase of the nickel content, the melting point is reduced by 59 ℃, the resistivity is increased by about 15%, and the welding performance is further optimized.
Example 4
Designing a titanium alloy ingot with the nominal composition of Ti86.4Al5.76V3.84Ni4 (mass), putting 1920g of pretreated TC4 titanium alloy (Ti90Al6V4, mass percent) and 80g of high-purity nickel particles into a water-cooled cuprammonium pot in a non-consumable vacuum arc smelting furnace, then carrying out gas washing for 3 times (firstly vacuumizing to the vacuum degree of 2 x 10 < -3 > Pa, then filling 3000Pa of high-purity argon), filling argon atmosphere with the pressure of 0.05MPa for non-consumable vacuum smelting, wherein the smelting temperature is 2200 ℃, stopping arc after smelting for 10 minutes, re-starting arc for re-smelting after a smelted body is solidified, and repeating the smelting process for 5 times to obtain an alloy ingot. And carrying out solution treatment on the alloy ingot at 780 ℃ for 1.5 hours, and then cooling to room temperature along with the furnace. Annealing the solid solution alloy in an argon atmosphere at 480 ℃ for 3 hours, and cooling the alloy to room temperature along with the furnace. And (3) processing the alloy ingot after the annealing into a welding wire with the diameter of 0.8-1.6mm by the processes of rolling → finishing of a wire rod → inspection → solution treatment → dipping lubrication coating → drying → drawing → acid cleaning → solution treatment and the like, wherein the processes of rolling, drawing and the like which are well known by the technicians in the field can be adopted. The results of the physical, comprehensive and electrical property analysis tests on the filaments are shown in Table 1. As can be seen from the table, the yield strength and the tensile strength of the titanium alloy are respectively reduced to 873MPa and 956MPa compared with TC4(Ti90Al6V4), the density and the elongation are further improved along with the increase of the nickel content, the melting point is reduced by 118 ℃, the resistivity is increased by about 26%, and the welding performance is further optimized.
Example 5
The nominal composition of a titanium alloy ingot is designed to be Ti88Al5.5V4Ni2.5 (mass), 2000g of pretreated raw materials are put into a water-cooled copper orange pot in a non-consumable vacuum arc smelting furnace according to the mixture ratio, then gas washing is carried out for 4 times (firstly, the vacuum degree is vacuumized to be 2 multiplied by 10 < -3 > Pa, and high-purity argon gas of 3000Pa is charged), non-consumable vacuum smelting is carried out under the argon atmosphere with the pressure of 0.05MPa, the smelting temperature is 2400 ℃, the arc is stopped after smelting for 10 minutes, the arc is restarted and the alloy ingot is smelted again after the smelted body is solidified, and the alloy ingot is obtained by repeating the smelting process for 5 times. And carrying out solution treatment on the alloy ingot at 820 ℃ for 1 hour, and then cooling the alloy ingot to room temperature along with the furnace. Annealing the solid solution alloy in an argon atmosphere at 520 ℃ for 2.5 hours, and cooling the alloy to room temperature along with the furnace. And (3) processing the alloy ingot after the annealing into a welding wire with the diameter of 0.8-1.6mm by the processes of rolling → finishing of wire rod → inspection → solution treatment → dipping lubrication coating → drying → drawing → acid cleaning → solution treatment → the like, wherein the processes of rolling, drawing and the like can be adopted by the processes known by the technicians in the field. The results of the physical, comprehensive and electrical property analysis tests on the filaments are shown in Table 1. The results are between examples 2 and 3, and correspond to the trend of the relevant changes.
Example 6
The nominal composition of a titanium alloy ingot is designed to be Ti85.2Al6.3V3.5Ni5 (mass), 2000g of pretreated raw materials are put into a water-cooled copper orange pot in a non-consumable vacuum arc smelting furnace according to the mixture ratio, 4950g of pretreated TC4 titanium alloy (Ti90Al6V4, mass percent) and 50g of high-purity nickel particles are put into the water-cooled copper orange pot in the non-consumable vacuum arc smelting furnace, then 3 times of gas washing (firstly vacuumizing to the vacuum degree of 2 x 10 < -3 > Pa, then filling 3000Pa high-purity argon gas) are carried out, non-2200 vacuum smelting is carried out in the atmosphere with the pressure of 0.05MPa, the smelting argon temperature is argon, the arc is stopped after smelting for 20 minutes, the arc is restarted after the smelted body is solidified, and the smelting process is repeated for 4 times to obtain the alloy ingot. And carrying out solution treatment on the alloy ingot at 750 ℃ for 2 hours, and then cooling the alloy ingot to room temperature along with the furnace. Annealing the solid solution alloy in an argon atmosphere at 450 ℃ for 4 hours, and cooling the alloy to room temperature along with the furnace. And (3) processing the annealed alloy ingot into a welding wire with the diameter of 0.8-1.6mm by the processes of rolling → finishing of a wire rod → inspection → solution treatment → dipping lubrication coating → drying → acid cleaning → finishing → inspection → solution treatment → dipping lubrication coating → drying → drawing → acid cleaning → solution treatment and the like, wherein the processes of rolling, drawing and the like adopted can be known by the technical personnel in the field. The results of the physical, comprehensive and electrical property analysis tests on the filaments are shown in Table 1. As can be seen from the table, the yield strength and tensile strength of the titanium alloy are respectively reduced to 868MPa and 951MPa compared with TC4(Ti90Al6V4), the density is increased to 4.59g/cm3, the elongation is maintained at 7-10%, the melting point is reduced by 156 ℃, and the resistivity is increased by about 30%.
In order to verify the optimization effect of the welding performance, a printing welding test is respectively carried out on a 1.0mm traditional TC4 titanium alloy welding wire and a 1.0mm nickel-containing TC4 titanium alloy welding wire in the embodiment 4, the same printing welding parameters are adopted, the welding quality of the nickel-containing TC4 titanium alloy is obviously improved compared with that of the TC4 titanium alloy, the quality of a T-shaped joint is obviously improved, and the welding performance of the nickel-containing TC4 titanium alloy is obviously improved.
Physical properties of the nickel-containing TC4 titanium alloys of the examples in Table 1
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (6)
1. A titanium alloy for manufacturing an arc fuse additive is characterized in that: the composition comprises [ Ti89.7-91Al5.5-6.8V3.5-4.5]100-xNix (x is 1-5) in percentage by mass, and comprises the following components:
2. the titanium alloy for the additive manufacturing of the arc fuse as claimed in claim 1, wherein:
the nickel-containing TC4 titanium alloy comprises the following components:
3. the method for preparing the titanium alloy for the additive manufacturing of the arc fuse, which is applied to the alloy, is characterized in that: the method comprises the following steps:
a. smelting alloy raw materials according to the component proportion of the nickel-containing TC4 titanium alloy to obtain an alloy ingot;
b. carrying out solid solution treatment and annealing treatment on the alloy ingot to obtain a solid solution alloy;
c. annealing the solid solution alloy to obtain a nickel-containing TC4 titanium alloy;
d. rolling a titanium alloy containing nickel TC4 → finishing a wire rod → inspecting → performing solution treatment → dipping a lubricating coating → drying → drawing → pickling → finishing → inspecting → performing solution treatment → dipping a lubricating coating → drying → drawing → pickling → performing solution treatment → inspecting → packaging → warehousing, and processing the titanium alloy into a welding wire with the diameter of 0.8-1.6 mm.
4. The titanium alloy for the additive manufacturing of the arc fuse and the preparation method thereof according to claim 3 are characterized in that: in the step a, the alloy raw material comprises titanium, nickel, vanadium, aluminum and TC4 titanium alloy; the smelting adopts an electric arc smelting process of a non-consumable vacuum arc smelting furnace, and the smelting is carried out under the protection of inert atmosphere, wherein the inert atmosphere is argon, and the pressure is 0.05 MPa.
5. The titanium alloy for the additive manufacturing of the arc fuse and the preparation method thereof according to claim 3 are characterized in that: in the step b, the temperature of the solution treatment is 740-840 ℃, the time of the solution treatment is 0.5-2h, or a TC4 titanium alloy solution treatment process is adopted.
6. The titanium alloy for the additive manufacturing of the arc fuse and the preparation method thereof according to claim 3 are characterized in that: in the step c, the temperature of the annealing treatment is 450-550 ℃, the time of the annealing treatment is 2-4h, or a TC4 titanium alloy solution treatment process is adopted.
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