CN114378473B - High-temperature-resistant and wear-resistant welding wire and preparation method thereof - Google Patents
High-temperature-resistant and wear-resistant welding wire and preparation method thereof Download PDFInfo
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- CN114378473B CN114378473B CN202111579383.9A CN202111579383A CN114378473B CN 114378473 B CN114378473 B CN 114378473B CN 202111579383 A CN202111579383 A CN 202111579383A CN 114378473 B CN114378473 B CN 114378473B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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Abstract
The invention discloses a high-temperature-resistant and wear-resistant welding wire and a preparation method thereof, and relates to the technical field of welding materials. Firstly, mixing chromium nitride, boron carbide, iron powder, calcium oxide and fluorite to prepare a flux-cored mixture; wrapping the flux-cored mixture by using titanium-silicon-aluminum alloy to prepare a semi-finished product welding wire; finally, melting, reducing and drawing the semi-finished welding wire to prepare a high-temperature-resistant and wear-resistant welding wire; the molten titanium-silicon-aluminum alloy forms compact alumina and silicon oxide films in the high-temperature-resistant and wear-resistant welding wire, forms high-melting-point and high-hardness titanium nitride, titanium carbide and titanium diboride ceramic hard phase particles, and simultaneously consumes a large amount of carbon elements in the flux-cored mixture to avoid intergranular corrosion caused by that excessive carbon elements consume a large amount of chromium elements to form compounds, so that the high-temperature-resistant and wear-resistant welding wire prepared by the invention has good wear resistance, high-temperature resistance and corrosion resistance.
Description
Technical Field
The invention relates to the technical field of welding materials, in particular to a high-temperature-resistant and wear-resistant welding wire and a preparation method thereof.
Background
Wear, corrosion and breakage are three major forms of material and energy consumption. Among them, in the field of metal material application, wear is not ignored as a major failure mode, and the material and energy consumption caused by it is very huge. Not only does wear failure result in a significant waste of resources, but it may also directly or indirectly cause catastrophic accidents. The abrasion phenomenon is commonly existed in mechanical equipment in the industrial field, and is particularly obvious in the aspects of mining machinery, agricultural machinery, engineering machinery, casting machinery and the like. With the rapid development of the economic society in China, the abrasion has become one of the main reasons for restricting the rapid development of the mechanical industry in China. Therefore, improving the wear resistance of materials and extending the service life of materials are important issues facing the current world.
The surface engineering technology such as surface coating, surface modification and surface treatment can prepare a cladding layer with better performance than the substrate material on the surface of the substrate material, thereby obviously improving the surface performance of the substrate material. Therefore, as one of the basic methods of manufacturing and remanufacturing, the surface engineering technology has become an important scientific technology, meets different requirements of a plurality of manufacturers, and obtains more remarkable economic and social benefits. In many surface strengthening technologies, the surfacing layer prepared by the surfacing method is metallurgically bonded with the base material, has higher bonding strength, can repair parts with harsh working environments, and has the advantages of high production rate and multiple applicable material types. Therefore, the surfacing technology is widely applied to the surface modification and repair process of the mechanical parts. Because most industrial environments are severe environments such as high temperature and high corrosion, the surfacing material welding wire is required to have excellent wear resistance and good high temperature resistance and corrosion resistance, and the surfacing material welding wire is also required to have good high temperature resistance and corrosion resistance, so that the surfacing material welding wire is also a technical problem to be solved for optimizing a road by a welding wire preparation technology.
The present invention addresses this problem by preparing a high temperature resistant and wear resistant welding wire.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant and wear-resistant welding wire and a preparation method thereof, so as to solve the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the high temperature resistant and wear resistant welding wire mainly comprises 20-30 parts of titanium-silicon-aluminum alloy and 60-120 parts of flux-cored mixture in parts by weight.
Further, the mass ratio of titanium, silicon and aluminum in the titanium-silicon-aluminum alloy is 4:1:20 to 6:1:30.
further, the flux core mixture is obtained by mixing chromium nitride, boron carbide, iron powder, calcium oxide and fluorite.
Further, the flux-cored mixture mainly comprises, by weight, 13-14 parts of chromium nitride, 2-4 parts of boron carbide, 78-80 parts of iron powder, 0.2-0.4 part of calcium oxide and 0.4-0.6 part of fluorite.
Further, the preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps: preparing a flux-cored mixture, preparing a semi-finished welding wire, and preparing the high-temperature-resistant and wear-resistant welding wire by using a melting reducing wire drawing process.
Further, the preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Mixing and grinding chromium nitride, boron carbide, iron powder, calcium oxide and fluorite at 25-26 ℃, sieving with a 80-100 mesh sieve, washing with ethanol for 3-5 times, putting into a 50-60 ℃ oven for baking for 1-2 hours, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Washing the titanium-silicon-aluminum alloy with ethanol for 3-5 times, airing for 1-2 hours at normal temperature, rolling the titanium-silicon-aluminum alloy into a U-shaped alloy with the diameter of 3.2-3.4 mm at the temperature of 1100-1150 ℃ and the pressure of 2.5-3.4 MPa, filling the flux-cored mixture with the mass of 3-4 times of the titanium-silicon-aluminum alloy into the U-shaped alloy, and rolling the titanium-silicon-aluminum alloy into a 0-shaped alloy with the diameter of 2.6-2.8 mm at the same temperature and the same pressure to prepare the 0-shaped welding wire; rolling and sealing the 3-5 cm positions at the two ends of the 0-shaped welding wire at 1500-1600 ℃ and 5-6 MPa to obtain a semi-finished welding wire;
(3) Under the protection of argon, the semi-finished welding wire is put into a heating furnace, heated and melted for 40-60 min at the temperature of 1-3 ℃/s to 1850-1950 ℃, then put into a wire drawing device, drawn for 5-7 times at the same temperature at 20-30 m/min, annealed for 15-30 min at the temperature of 1100-1150 ℃, cooled and washed for 4-6 times by deionized water at the temperature of 25-26 ℃, and put into a baking oven at the temperature of 50-60 ℃ for baking for 1-2 h, thus obtaining the high-temperature-resistant and wear-resistant welding wire.
Further, the thickness of the titanium-silicon-aluminum alloy in the step (2) is 0.8-1.2 mm.
Further, in the step (3), the aperture of the drawing die in the drawing equipment is 1.1-1.3 mm.
Compared with the prior art, the invention has the following beneficial effects:
when the high-temperature-resistant and wear-resistant welding wire is prepared, firstly, chromium nitride, boron carbide, iron powder, calcium oxide and fluorite are mixed to obtain a flux-cored mixture, then the flux-cored mixture is wrapped by titanium-silicon-aluminum alloy, and finally, the flux-cored mixture is subjected to melting reducing wire drawing to prepare the high-temperature-resistant and wear-resistant welding wire; the high-temperature-resistant and wear-resistant welding wire prepared by the invention has good high-temperature resistance, wear resistance and corrosion resistance.
In the process of melting reducing wire drawing, molten titanium-silicon-aluminum alloy is fused with the flux core, aluminum, silicon and oxygen react to form compact aluminum oxide and silicon oxide films, further diffusion of oxygen atoms is prevented, and the corrosion resistance of the high-temperature-resistant and wear-resistant welding wire is enhanced; titanium reacts with boron carbide and chromium nitride to form titanium nitride, titanium carbide and titanium diboride ceramic hard phase particles with high melting point and high hardness, so that the high temperature resistance of the high temperature resistant and wear resistant welding wire is improved; the hard phase particles of titanium nitride, titanium carbide and titanium diboride ceramic become the core of heterogeneous nucleation, so that the grains in the welding wire are thinned, the strength and toughness of the high-temperature-resistant and wear-resistant welding wire are improved, and the situation that the wear resistance of the high-temperature-resistant and wear-resistant welding wire is reduced due to overlarge brittleness of the surfacing alloy caused by the introduction of silicon is avoided; in addition, the titanium element has stronger activity, can consume a large amount of carbon in the boron carbide, avoid excessive carbon from diffusing in the grain boundary of the welding wire to form a compound between crystals and chromium, reduce the chromium content near the grain boundary, generate intergranular corrosion and further enhance the corrosion resistance of the high-temperature-resistant and wear-resistant welding wire; the boron carbide and metals such as chromium, iron, titanium and the like form high-hardness metal boride and metal carbide, so that the wear resistance of the high-temperature-resistant wear-resistant welding wire is enhanced; because the solid solution amount of boron in the iron matrix is smaller, boron in boron carbide generally gathers near the grain boundary, can play a role in strengthening the grain boundary, can refine matrix tissues and carbide grains, and further improves the wear resistance of the high-temperature-resistant and wear-resistant welding wire.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to more clearly illustrate the method provided by the invention, the following examples are used for describing the detailed description, and the method for testing each index of the high-temperature-resistant and wear-resistant welding wire prepared in the following examples is as follows:
abrasion resistance: the Rockwell hardness of the high-temperature-resistant and wear-resistant welding wires prepared by the examples and the comparative examples with the same length is measured according to the GB/T230.1 standard method to measure the wear resistance.
Corrosion resistance: the corrosion resistance of the high-temperature-resistant and wear-resistant welding wires prepared by the examples and the comparative examples with the same length is measured according to the GB/T4334 standard method.
High temperature resistance: the high-temperature resistance of the high-temperature resistant and wear-resistant welding wire is measured by measuring the breaking shrinkage rate of the high-temperature resistant and wear-resistant welding wire at high temperature by taking the high-temperature resistant and wear-resistant welding wires prepared by the examples and the comparative examples with the same length, and the sectional area of the high-temperature resistant and wear-resistant welding wire is firstly measured and recorded as A 0 Heating the high-temperature-resistant and wear-resistant welding wire to 980 ℃ at 10 ℃/s, heating to 1030 ℃ at 5 ℃/s, keeping the temperature for 30s, cooling to 1000 ℃ at 2 ℃/s, keeping the temperature for 30s, and then heating to 5×10 -3 The strain rate of/s is used for breaking the sample, and the sectional area of the high-temperature-resistant and wear-resistant welding wire after the breaking is measured and recorded as A 1 Shrinkage at break= (a 0 -A 1 )*100％/A 0 。
Example 1
The high-temperature-resistant and wear-resistant welding wire mainly comprises 20 parts of titanium-silicon-aluminum alloy and 60 parts of flux-cored mixture in parts by weight.
The preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Chromium nitride, boron carbide, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 13:2:78:0.2:0.4, mixing and grinding, sieving with an 80-mesh sieve, washing with ethanol for 3 times, putting into a 50 ℃ oven for baking for 1h, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Washing 0.8 mm-thick titanium-silicon-aluminum alloy with ethanol for 3 times, airing for 1h at normal temperature, rolling the titanium-silicon-aluminum alloy into a U-shaped with the diameter of 3.2mm at 1100 ℃ and 2.5MPa, filling a flux-cored mixture with the mass 3 times of that of the titanium-silicon-aluminum alloy into the U-shaped, and rolling the titanium-silicon-aluminum alloy into a 0-shaped with the diameter of 2.6mm at the same temperature and pressure to prepare the 0-shaped welding wire; rolling and sealing the 3cm positions at the two ends of the 0-shaped welding wire at 1500 ℃ and 5MPa to obtain a semi-finished welding wire;
(3) Under the protection of argon, placing the semi-finished welding wire into a heating furnace, heating and melting for 40min at the temperature of 1 ℃/s to 1850 ℃, then placing the semi-finished welding wire into a drawing device with the aperture of 1.1mm of a drawing die, drawing for 5 times at the same temperature at 20m/min, annealing the middle of the welding wire at 1100 ℃ for 15min, cooling and washing the welding wire for 4 times with deionized water at 25 ℃, and placing the welding wire into a baking oven at 50 ℃ for baking for 1h to obtain the high-temperature-resistant and wear-resistant welding wire.
Example 2
The high temperature resistant and wear resistant welding wire mainly comprises, by weight, 25 parts of titanium-silicon-aluminum alloy and 90 parts of flux-cored mixture.
The preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Chromium nitride, boron carbide, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 13.5 at 25.5 ℃:3:79:0.3:0.5, mixing and grinding, sieving with a 90-mesh sieve, washing with ethanol for 4 times, putting into a 55 ℃ oven for baking for 1.5 hours, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Washing 1mm thick titanium-silicon-aluminum alloy with ethanol for 4 times, airing for 1.5 hours at normal temperature, rolling the titanium-silicon-aluminum alloy into a U-shaped with the diameter of 3.3mm at 1125 ℃ and 2.9MPa, filling a flux-cored mixture with the mass of 3.5 times of that of the titanium-silicon-aluminum alloy into the U-shaped, and rolling the titanium-silicon-aluminum alloy into a 0-shaped with the diameter of 2.7mm at the same temperature and pressure to prepare a 0-shaped welding wire; rolling and sealing 4cm positions at two ends of a 0-shaped welding wire at 1550 ℃ and 5.5MPa to obtain a semi-finished welding wire;
(3) Under the protection of argon, placing the semi-finished welding wire into a heating furnace, heating and melting for 50min at the temperature of 2 ℃/s to 1900 ℃, then placing into a drawing device with the aperture of a drawing die of 1.2mm, drawing for 6 times at the same temperature at 25m/min, annealing for 22.5min at 1125 ℃ in the middle of the welding wire, cooling and washing for 5 times with deionized water at 25.5 ℃, and placing into a 55 ℃ oven for baking for 1.5h to obtain the high-temperature-resistant and wear-resistant welding wire.
Example 3
The high-temperature-resistant and wear-resistant welding wire mainly comprises, by weight, 30 parts of titanium-silicon-aluminum alloy and 120 parts of flux-cored mixture.
The preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Chromium nitride, boron carbide, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 14:4:80:0.4:0.6, mixing and grinding, sieving with a 100-mesh sieve, washing with ethanol for 5 times, putting into a 60 ℃ oven for baking for 2 hours, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Washing a titanium-silicon-aluminum alloy with the thickness of 1.2mm with ethanol for 5 times, airing for 2 hours at normal temperature, rolling the titanium-silicon-aluminum alloy into a U-shaped with the diameter of 3.4mm at 1150 ℃ and 3.4MPa, filling a flux-cored mixture with the mass of 4 times of that of the titanium-silicon-aluminum alloy into the U-shaped, and rolling the titanium-silicon-aluminum alloy into a 0-shaped with the diameter of 2.8mm at the same temperature and pressure to prepare a 0-shaped welding wire; rolling and sealing 5cm positions at two ends of a 0-shaped welding wire at 1600 ℃ and under 6MPa to obtain a semi-finished welding wire;
(3) Under the protection of argon, placing the semi-finished welding wire into a heating furnace, heating and melting for 60min at the temperature of 3 ℃/s to 1950 ℃, then placing the semi-finished welding wire into a drawing device with the aperture of 1.3mm of a drawing die, drawing for 7 times at the same temperature at 30m/min, annealing the middle of the welding wire at 1150 ℃ for 30min, cooling and washing for 6 times with deionized water at 26 ℃, and placing the welding wire into a 60 ℃ oven for baking for 2h to obtain the high-temperature-resistant and wear-resistant welding wire.
Comparative example 1
The recipe of comparative example 1 was the same as in example 2. The preparation method of the high-temperature-resistant and wear-resistant welding wire is different from that of the embodiment 2 only in the step (1), and the step (1) is modified as follows: at 25.5 ℃, chromium powder, boron carbide, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 13.5:3:79:0.3:0.5, sieving with a 90-mesh sieve, washing with ethanol for 4 times, baking in a 55 ℃ oven for 1.5h, and naturally cooling to room temperature to obtain the drug core mixture. The remaining preparation steps were the same as in example 2.
Comparative example 2
The recipe of comparative example 1 was the same as in example 2. The preparation method of the high-temperature-resistant and wear-resistant welding wire is different from that of the embodiment 2 only in the step (1), and the step (1) is modified as follows: chromium nitride, graphite, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 13.5 at 25.5 ℃:0.3:79:0.3:0.5, sieving with a 90-mesh sieve, washing with ethanol for 4 times, baking in a 55 ℃ oven for 1.5h, and naturally cooling to room temperature to obtain the drug core mixture. The remaining preparation steps were the same as in example 2.
Comparative example 3
A high-temperature-resistant and wear-resistant welding wire mainly comprises 90 parts of flux-cored mixture in parts by weight.
The preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Chromium nitride, boron carbide, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 13.5 at 25.5 ℃:3:79:0.3:0.5, mixing and grinding, sieving with a 90-mesh sieve, washing with ethanol for 4 times, putting into a 55 ℃ oven for baking for 1.5 hours, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Under the protection of argon, the flux-cored mixture is put into a heating furnace, heated and melted for 50min at the temperature of 2 ℃/s to 1900 ℃ to obtain a flux-cored metal ingot with the diameter of 3.3 mm; and then the flux-cored metal ingot is put into a drawing device with the aperture of 1.2mm of a drawing die, is drawn for 6 times at the same temperature and 25m/min, the middle of the welding wire is annealed for 22.5min at 1125 ℃, is cooled and washed for 5 times by deionized water at 25.5 ℃, and is put into a 55 ℃ oven for baking for 1.5h, so that the high-temperature-resistant and wear-resistant welding wire is obtained.
Comparative example 4
The high temperature resistant and wear resistant welding wire mainly comprises, by weight, 25 parts of titanium-silicon-aluminum alloy and 90 parts of flux-cored mixture.
The preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Chromium nitride, boron carbide, iron powder, calcium oxide and fluorite are mixed according to the mass ratio of 13.5 at 25.5 ℃:3:79:0.3:0.5, mixing and grinding, sieving with a 90-mesh sieve, washing with ethanol for 4 times, putting into a 55 ℃ oven for baking for 1.5 hours, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Washing 1mm thick titanium-silicon-aluminum alloy with ethanol for 4 times, airing for 1.5 hours at normal temperature, rolling the titanium-silicon-aluminum alloy into a U-shaped with the diameter of 3.3mm at 1125 ℃ and 2.9MPa, filling a flux-cored mixture with the mass of 3.5 times of that of the titanium-silicon-aluminum alloy into the U-shaped, and rolling the titanium-silicon-aluminum alloy into a 0-shaped with the diameter of 2.7mm at the same temperature and pressure to prepare a 0-shaped welding wire; and (3) rolling and sealing 4cm positions at the two ends of the 0-shaped welding wire at 1550 ℃ and 5.5MPa to obtain a semi-finished welding wire.
Effect example
The following table 1 shows the analysis results of the abrasion resistance, high temperature resistance and corrosion resistance of the high temperature resistant abrasion resistant welding wires prepared by using examples 1 to 3 and comparative examples 1 to 4 of the present invention.
TABLE 1
| Rockwell hardness/(HRC) | Corrosion resistance (%) | High temperature resistance (%) | |
| Example 1 | 67 | 0.79 | 63.25 |
| Example 2 | 68 | 0.78 | 63.30 |
| Example 3 | 66 | 0.80 | 63.28 |
| Comparative example 1 | 67 | 0.77 | 60.32 |
| Comparative example 2 | 58 | 0.80 | 55.25 |
| Comparative example 3 | 57 | 2.32 | 48.65 |
| Comparative example 4 | 56 | 0.79 | 47.52 |
From table 1, it can be found that the high temperature resistant and wear resistant welding wires prepared in examples 1, 2 and 3 have good wear resistance, high temperature resistance and corrosion resistance; from comparison of experimental data of examples 1, 2 and 3 and comparative example 1, it can be found that the high-temperature-resistant and wear-resistant welding wire is prepared by using the flux-cored mixture containing chromium nitride, titanium in the chromium nitride and the titanium-silicon-aluminum alloy forms high-temperature-resistant titanium nitride, and the obtained high-temperature-resistant and wear-resistant welding wire has stronger high-temperature resistance; from comparison of experimental data of examples 1, 2 and 3 and comparative example 2, it can be found that the high-temperature-resistant and wear-resistant welding wire is prepared by using the flux-cored mixture containing boron carbide, titanium in the boron carbide and the titanium-silicon-aluminum alloy forms titanium carbide and titanium diboride ceramic hard phase particles, and the obtained high-temperature-resistant and wear-resistant welding wire has stronger high-temperature resistance and wear resistance; from the experimental data of examples 1, 2, 3 and comparative example 3, it can be found that the high temperature resistant and wear resistant welding wire is prepared only by using the flux-cored mixture, a dense alumina and silicon oxide film cannot be formed, titanium nitride, titanium carbide and titanium diboride ceramic hard phase particles cannot be formed, excessive carbon and chromium in the flux-cored mixture form a compound to generate intergranular corrosion, and the high temperature resistance, corrosion resistance and wear resistance of the prepared high temperature resistant and wear resistant welding wire are weak; from the experimental data of examples 1, 2, 3 and comparative example 4, it can be found that the flux-cored mixture is only wrapped by the titanium-silicon-aluminum alloy, so that the hard phase particles of titanium nitride, titanium carbide and titanium diboride ceramics cannot be formed, and the high temperature resistance and the wear resistance of the high temperature resistant and wear resistant welding wire are weak.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The preparation method of the high-temperature-resistant and wear-resistant welding wire is characterized by mainly comprising, by weight, 20-30 parts of titanium-silicon-aluminum alloy and 60-120 parts of flux-cored mixture; the mass ratio of titanium, silicon and aluminum in the titanium-silicon-aluminum alloy is 4:1:20 to 6:1:30; the flux-cored mixture is obtained by mixing chromium nitride, boron carbide, iron powder, calcium oxide and fluorite; the flux-cored mixture is prepared from 13-14 parts by weight of chromium nitride, 2-4 parts by weight of boron carbide, 78-80 parts by weight of iron powder, 0.2-0.4 part by weight of calcium oxide and 0.4-0.6 part by weight of fluorite;
the preparation method of the high-temperature-resistant and wear-resistant welding wire mainly comprises the following preparation steps:
(1) Mixing and grinding chromium nitride, boron carbide, iron powder, calcium oxide and fluorite at 25-26 ℃, sieving with a 80-100 mesh sieve, washing with ethanol for 3-5 times, putting into a 50-60 ℃ oven for baking for 1-2 hours, and naturally cooling to room temperature to obtain a flux-cored mixture;
(2) Washing the titanium-silicon-aluminum alloy with ethanol for 3-5 times, airing for 1-2 hours at normal temperature, rolling the titanium-silicon-aluminum alloy into a U-shaped alloy with the diameter of 3.2-3.4 mm at the temperature of 1100-1150 ℃ and the pressure of 2.5-3.4 MPa, filling the flux-cored mixture with the mass of 3-4 times of the titanium-silicon-aluminum alloy into the U-shaped alloy, and rolling the titanium-silicon-aluminum alloy into a 0-shaped alloy with the diameter of 2.6-2.8 mm at the same temperature and the same pressure to prepare the 0-shaped welding wire; rolling and sealing the 3-5 cm positions at the two ends of the 0-shaped welding wire at 1500-1600 ℃ and 5-6 MPa to obtain a semi-finished welding wire;
(3) Under the protection of argon, the semi-finished welding wire is put into a heating furnace, heated and melted for 40-60 min at the temperature of 1-3 ℃/s to 1850-1950 ℃, then put into a wire drawing device, drawn for 5-7 times at the same temperature at 20-30 m/min, annealed for 15-30 min at the temperature of 1100-1150 ℃, cooled and washed for 4-6 times by deionized water at the temperature of 25-26 ℃, and put into a baking oven at the temperature of 50-60 ℃ for baking for 1-2 h, thus obtaining the high-temperature-resistant and wear-resistant welding wire.
2. The method for preparing a high-temperature-resistant and wear-resistant welding wire according to claim 1, wherein the aperture of the drawing die in the drawing equipment in the step (3) is 1.1-1.3 mm.
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| CN202111579383.9A CN114378473B (en) | 2021-12-22 | 2021-12-22 | High-temperature-resistant and wear-resistant welding wire and preparation method thereof |
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| CN202111579383.9A CN114378473B (en) | 2021-12-22 | 2021-12-22 | High-temperature-resistant and wear-resistant welding wire and preparation method thereof |
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| CN114378473A CN114378473A (en) | 2022-04-22 |
| CN114378473B true CN114378473B (en) | 2023-05-23 |
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| CN202111579383.9A Active CN114378473B (en) | 2021-12-22 | 2021-12-22 | High-temperature-resistant and wear-resistant welding wire and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101402161B (en) * | 2008-11-07 | 2010-10-13 | 山东大学 | Abrasive wear resistant weld deposit flux-cored wire |
| CN101829861B (en) * | 2010-05-14 | 2012-02-01 | 河海大学常州校区 | Submerged arc hardfacing flux-cored wire with high crack resistance |
| CN202963800U (en) * | 2012-12-10 | 2013-06-05 | 郑州机械研究所 | Metal particle reinforcing flux-cored aluminum welding wire |
| CN103551757B (en) * | 2013-10-31 | 2015-11-11 | 北京工业大学 | Soldering alusil alloy seamless flux-cored wire, preparations and applicatio |
| CN106624426B (en) * | 2016-11-29 | 2018-09-21 | 辽宁大学 | A kind of abrasion-resistant coatings autoreaction flux-cored wire and its preparation and application |
| MX2020003016A (en) * | 2019-03-19 | 2022-07-07 | Hobart Brothers Llc | Systems and methods for additive manufacturing using aluminum metal-cored wire. |
| CN110052739B (en) * | 2019-05-15 | 2022-06-28 | 天津市永昌焊丝有限公司 | High-strength high-toughness transverse submerged arc welding flux and preparation method and application thereof |
| CN110181192A (en) * | 2019-06-14 | 2019-08-30 | 新乡市和光科技有限公司 | A kind of arc-welding increasing material manufacturing Al alloy powder core filaments |
| CN110560957B (en) * | 2019-09-03 | 2021-07-30 | 北京工业大学 | Micro-nano particle reinforced aluminum alloy flux-cored filling wire for welding 7075 aluminum alloy |
| CN110711969A (en) * | 2019-10-09 | 2020-01-21 | 鞍钢集团北京研究院有限公司 | Arc spraying flux-cored wire for heat-insulating coating and preparation method thereof |
| CN111015012A (en) * | 2019-12-19 | 2020-04-17 | 北京工业大学 | Micro-nano particle reinforced aluminum alloy flux-cored filling wire for 7075 aluminum alloy TIG welding |
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