CN112975206B - Tough flux-cored wire and preparation method thereof - Google Patents
Tough flux-cored wire and preparation method thereof Download PDFInfo
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- CN112975206B CN112975206B CN202110272975.XA CN202110272975A CN112975206B CN 112975206 B CN112975206 B CN 112975206B CN 202110272975 A CN202110272975 A CN 202110272975A CN 112975206 B CN112975206 B CN 112975206B
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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
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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
-
- 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 application relates to the field of welding materials, and particularly discloses a tough type flux-cored wire and a preparation method thereof, the tough type flux-cored wire comprises a wire coating layer and a wire flux-cored composition, a containing cavity which is communicated along the length of the wire coating layer is arranged in the wire coating layer, the containing cavity is internally provided with the wire flux-cored composition, and the wire flux-cored composition comprises the following components in parts by weight: 45-58 parts of ferrochromium, 6-10 parts of ferromanganese, 10-15 parts of ferrosilicon, 6-8 parts of ferromolybdenum, 1-3 parts of graphite and 1-2 parts of additives; the powder structure filled in the flux-cored wire is improved by screening the components in the flux-cored wire and optimizing the proportion among the components, sulfur in the welding alloy is effectively removed by compounding and adding ferrosilicon and ferromanganese, the welding process can be improved by the aid of the powder structure, the carburizing is performed on the surfacing alloy, various alloy carbide hard phases are formed, and the toughness and the wear resistance of a surfacing alloy matrix are strengthened.
Description
Technical Field
The application relates to the field of welding materials, in particular to a tough flux-cored wire and a preparation method thereof.
Background
During welding, the welding manufacturability of the welding material plays a crucial role in the quality of the welded joint. In the welding process of the flux-cored wire, the welding manufacturability is influenced by the components of the powder alloy, and the welding quality is also determined by the factors of the surface smoothness of the wire, the dimension error of the wire, the surface rust resistance, the powder filling uniformity and the like. The welding rod, the solid wire and the flux-cored wire are the longest used materials in surfacing welding.
Compared with the common welding wire, the components of the powder in the metal powder core type flux-cored wire can be freely adjusted, the selection of the powder is different in different types and functions of the flux-cored wires, and usually, the added powder is properly selected according to different flux-cored wire welding methods, protection modes and process requirements. The flux-cored wire has special advantages: compared with a solid welding wire and a self-protection flux-cored welding wire, the welding efficiency is higher, the welding operability is good, the components are easy to adjust, and the variety is complete.
In view of the above-mentioned related technologies, the inventor believes that, in the welding process of the existing flux-cored wire material, the problem of poor toughness performance of the welded joint after welding is likely to occur due to poor matching degree of the combination and proportion of the components.
Disclosure of Invention
In order to overcome the defect that the toughness of the traditional tough type flux-cored wire is insufficient, the application provides a tough type flux-cored wire and a preparation method thereof, and the following technical scheme is adopted:
in a first aspect, the application provides a tough type flux-cored wire, tough type flux-cored wire includes welding wire coating and welding wire flux-cored composition, be equipped with in the welding wire coating along its length through hold the chamber, it is equipped with welding wire flux-cored composition to hold the intracavity, welding wire flux-cored composition includes following parts by weight material: 45-58 parts of ferrochrome, 6-10 parts of ferromanganese, 10-15 parts of ferrosilicon, 6-8 parts of ferromolybdenum, 1-3 parts of graphite and 1-2 parts of additives.
By adopting the technical scheme, the components in the flux-cored wire are screened and the ratio among the components is optimized, so that the structure of the powder filled in the flux-cored wire is improved, the ferrosilicon and ferromanganese are compounded and added, the deoxidization can be effectively carried out when the flux-cored wire is used, and meanwhile, the ferromanganese can effectively remove sulfur in the welding alloy;
on the basis, the added graphite particles can improve the welding process and carburize the surfacing alloy, and the added ferrochrome, ferrotungsten and ferrovanadium can form various carbide hard phases in the surfacing alloy, so that the toughness and the wear resistance of the surfacing alloy matrix are enhanced.
Further, the flux-cored composition of the welding wire further comprises 3-5 parts of a vanadium-titanium modifier, wherein the molar ratio of vanadium elements to titanium elements in the vanadium-titanium modifier is 3: 8.
by adopting the technical scheme, because this application is through adding vanadium and titanium element in the material, compound through the preparation can effectively form good dispersion filling's effect, prevent the material because simple mixture adds the not good problem of material homogeneity after leading to adding, simultaneously, because the vanadium element that adds can form the VC stereoplasm phase with graphite in the use, and the high temperature behavior of VC stereoplasm phase is stable, non-deformable and fracture under the wearing and tearing condition, the wearability that has improved the build-up welding metal increases, and titanium is the element that a strong carbide formed, form ceramic stereoplasm phase granule, refine the crystalline grain in the welding seam, still can improve the intensity and the toughness of build-up welding deposit metal simultaneously, thereby can further play the reinforcement of toughness and wearability to the alloy matrix of build-up welding.
Further, the vanadium-titanium modifier is prepared by adopting the following scheme: (1) respectively weighing 45-50 parts by weight of absolute ethyl alcohol, 6-8 parts by weight of butyl titanate, 10-15 parts by weight of countless ethyl alcohol, 6-8 parts by weight of 5% acetic acid solution and 10-15 parts by weight of deionized water, placing the mixture in a stirring device, stirring and mixing the mixture, and collecting the mixture to obtain mixed sol solution; (2) adding an ammonium metavanadate solution with the mass fraction of 15% into the mixed sol solution according to the molar ratio of the vanadium element to the titanium element, stirring, mixing, standing for 6-8 h, collecting and standing the mixed solution, naturally drying in the air, grinding, then carrying out heat preservation treatment at 125-150 ℃ for 6-8 h, standing, cooling to room temperature, grinding and sieving to obtain the vanadium-titanium modifier.
By adopting the technical scheme, the preparation steps of the vanadium-titanium modifier material are optimized, the vanadium-titanium is organically combined and forms a good dispersion system through a gel sol method, the defect of poor dispersion performance after the modified material is added is overcome, the vanadium particles are coated by the titanium dioxide sol, and the core-shell structure additive material is prepared, so that the toughness and the wear resistance of the alloy matrix for build-up welding after the vanadium-titanium modifier material is used are further improved.
Furthermore, the particle size of the vanadium-titanium modifier is 150-300 μm.
By adopting the technical scheme, the added particle size of the vanadium-titanium modifier is optimized, and the optimized vanadium-titanium modifier has a good dispersion size effect and can be effectively and uniformly dispersed and filled into a welding wire flux-cored composition of a flux-cored wire, so that the toughness and the wear resistance of a surfacing alloy matrix after the vanadium-titanium modifier material is used are further improved in the actual use process.
Further, the filling rate of the welding wire flux-cored composition is 40-45%.
By adopting the technical scheme, because the filling rate of the flux-cored composition material is optimized, the filling rate after the optimization can effectively ensure that the distribution is kept uniform in the length direction of the welding wire, and the powder is not expanded or mixed in the welding wire tube, so that the filling rate after the optimization of the technical scheme can effectively avoid the phenomenon of 'empty tube' of the welding wire caused by the undersize filling rate, prevent the welding wire from being easily broken when in wire feeding, and prevent the arc from being broken and generating air holes in the welding line, thereby strengthening the toughness and the wear resistance of the surfacing alloy substrate.
Furthermore, the material of the welding wire coating layer is any one of 5356# aluminum alloy doped with Ce element or 5356# aluminum alloy doped with Be element.
By adopting the technical scheme, the 5356 aluminum alloy is preferably selected and doped with the rare earth element for modification treatment, because the 5356 aluminum alloy has relatively high alpha phase strength and toughness, and the beta phase in the eutectic structure is a hard brittle phase, the plasticity and strength of the as-cast lead alloy are reduced and the elongation is reduced, the relatively ideal microstructure is relatively more, fine and uniformly distributed primary crystal alpha phase, and by adding the rare earth element, a compound formed by the rare earth element and an aluminum matrix can be used as a nucleation point, so that the crystallization core during solidification of molten metal is increased, the number of nucleation is increased, and the mechanical property and the toughness strength of the aluminum alloy material are further improved.
In a second aspect, the present application provides a method for preparing a tough-type flux-cored wire, wherein the method for preparing the tough-type flux-cored wire comprises the following steps: s1, preparing a welding wire coating layer: firstly, placing an aluminum alloy in an argon environment for melting and refining, adding a Ce element or a Be element, slagging off, standing, cooling to room temperature, and then rolling and forming to prepare a welding wire coating layer; s2, preparing a welding wire flux-cored composition; mixing ferrochrome, ferromanganese, ferrosilicon, ferromolybdenum, graphite, an additive and a vanadium-titanium modifier according to a formula, and filling the mixture into a welding wire coating layer to prepare a prefilled welding wire; s3, preparing welding wires: and rolling and forming the pre-filled welding wire seam, finely drawing and reducing the diameter again, and barreling or winding to prepare the tough flux-cored wire.
By adopting the technical scheme, the preparation method of the welding wire has the advantages that the welding wire alloy is firstly treated, the toughness strength and the mechanical property of the welding wire coating layer are improved by melting refining and adding the rare earth elements, meanwhile, the welding wire flux-cored composition is effectively filled into the welding wire coating layer by optimizing the proportion of the welding wire flux-cored composition, and after rolling forming, the diameter is reduced by fine drawing, the scheme of the integral preparation is simple and convenient, and the preparation efficiency is effectively improved.
Further, the additive in the step S2 comprises the following components in a mass ratio of 1-2: 2-3: 3-5 parts of a mixture of quartz sand, zircon sand and rutile.
By adopting the technical scheme, the additive has the advantages that the components of the additive are optimized, the uniform and stable slag removing agent is effectively formed through the quartz sand, the zircon sand and the rutile which are combined in a multi-component mode, the phenomena of splashing and the like in the welding process are effectively prevented, and accordingly formed welding seams have good toughness strength and mechanical properties.
In summary, the present application includes at least one of the following beneficial technical effects:
firstly, the components in the flux-cored wire are screened, the ratio among the components is optimized, and the structure of the powder filled in the flux-cored wire is improved. On the basis, the added ferrochrome, ferrotungsten and ferrovanadium can form various alloy carbide hard phases in the surfacing alloy, and the toughness and the wear resistance of the surfacing alloy matrix are enhanced.
Secondly, this application is through adding vanadium and titanium element in the material, can effectively form good dispersion filling's effect through the complex of preparation, prevent the material because simple mixture adds the not good problem of material homogeneity after leading to adding, simultaneously, because the vanadium element that adds can form the VC stereoplasm phase with graphite in the use, and the high temperature performance of VC stereoplasm phase is stable, non-deformable and fracture under the wearing and tearing condition, the wearability that has improved build-up welding metal increases, and titanium is the element that a strong carbide formed, form ceramic stereoplasm phase granule, refine the crystalline grain in the welding seam, still can improve the intensity and the toughness of deposit metal simultaneously, thereby can further play the reinforcement of toughness and wearability to the alloy matrix of build-up welding.
And thirdly, preferably, the 5356 aluminum alloy is doped with rare earth elements for modification treatment, because the 5356 aluminum alloy has relatively high strength and toughness of alpha phase, and the beta phase in the eutectic structure is hard and brittle phase, the existence of the hard and brittle phase can reduce the plasticity and strength of the cast lead alloy, and the elongation is reduced, so that the more ideal microstructure is relatively more, fine and uniformly distributed primary crystal alpha phase, and by adding the rare earth elements, a compound formed by the rare earth elements and an aluminum matrix can be used as nucleation points, so that the crystallization core during the solidification of molten metal is increased, the nucleation number is increased, and the mechanical property and the toughness strength of the aluminum alloy material are further improved.
Fourthly, according to the preparation method, the welding wire alloy is firstly processed, the toughness strength and the mechanical property of the welding wire coating layer are improved by melting refining and adding rare earth elements, meanwhile, the welding wire flux-cored composition is effectively filled into the welding wire coating layer by optimizing the proportion of the welding wire flux-cored composition in the technical scheme, and is subjected to rolling forming and then fine drawing and reducing, the scheme for integral preparation is simple and convenient, and the preparation efficiency is effectively improved.
Detailed Description
The present application will be described in further detail with reference to examples.
In the examples of the present application, the raw materials and the equipment used are as follows, but not limited thereto:
in the application, all raw materials and instruments and equipment can be obtained by market, and the specific models are as follows:
a grinding machine, a Shanghai Wei Te force WTL inversion type direct current argon arc welding machine, a welding semi-automatic wire feeder, a GNT 200 type electronic universal testing machine and a JB-30B type impact testing machine.
Preparation example
Preparation of vanadium-titanium modifier
Preparation example 1
Respectively weighing 4.5kg of absolute ethyl alcohol, 0.6kg of butyl titanate, 1kg of countless ethyl alcohol, 0.6kg of acetic acid solution with the mass fraction of 5% and 1kg of deionized water, placing the materials in a stirring device, stirring, mixing and collecting to obtain mixed sol solution, wherein the molar ratio of vanadium elements to titanium elements is 3: 8, adding an ammonium metavanadate solution with the mass fraction of 15% into 6kg of mixed sol solution, stirring, mixing, standing for 6 hours, collecting and standing the mixed solution, naturally drying in the air, grinding, then carrying out heat preservation treatment at 125 ℃ for 6 hours, standing, cooling to room temperature, grinding and sieving to prepare the 150-micron vanadium-titanium modifier 1.
Preparation example 2
Respectively weighing 4.7kg of absolute ethyl alcohol, 0.7kg of butyl titanate, 1.2kg of countless ethyl alcohol, 0.7kg of acetic acid solution with the mass fraction of 5% and 1.2kg of deionized water, placing the materials in a stirring device, stirring, mixing and collecting to obtain mixed sol liquid, wherein the molar ratio of vanadium elements to titanium elements is 3: 8, adding an ammonium metavanadate solution with the mass fraction of 15% into 7kg of mixed sol solution, stirring, mixing, standing for 7 hours, collecting and standing the mixed solution, naturally drying in the air, grinding, then carrying out heat preservation treatment at 134 ℃ for 7 hours, standing, cooling to room temperature, grinding and sieving to prepare the 225-micron vanadium-titanium modifier 1.
Preparation example 3
Respectively weighing 5.0kg of absolute ethyl alcohol, 0.8kg of butyl titanate, 1.5kg of countless ethyl alcohol, 0.8kg of acetic acid solution with the mass fraction of 5% and 1.5kg of deionized water, placing the materials in a stirring device, stirring, mixing and collecting to obtain mixed sol liquid, wherein the molar ratio of vanadium elements to titanium elements is 3: 8, adding an ammonium metavanadate solution with the mass fraction of 15% into 8kg of mixed sol solution, stirring, mixing, standing for 8 hours, collecting and standing the mixed solution, naturally drying in the air, grinding, then carrying out heat preservation treatment at 150 ℃ for 8 hours, standing, cooling to room temperature, grinding and sieving to prepare the 300-micron vanadium-titanium modifier 1.
Preparation of welding wire coating layer
Preparation example 4
And melting and refining the aluminum alloy in an argon environment, adding Ce, slagging off, standing, cooling to room temperature, and rolling for forming to obtain the welding wire coating layer 1.
Preparation example 5
And melting and refining the aluminum alloy in an argon environment, adding Be element, slagging off, standing, cooling to room temperature, and rolling and forming to obtain the welding wire coating layer 2.
Preparation of the additive
Preparation example 6
1kg of quartz sand, 2kg of zircon sand and 3kg of rutile are mixed to prepare the additive 1.
Preparation example 7
4.5kg of quartz sand, 2.5kg of zircon sand and 4kg of rutile are mixed to prepare the additive 2.
Preparation example 8
2kg of quartz sand, 3kg of zircon sand and 5kg of rutile are mixed to prepare the additive 3.
Examples
Example 1
Preparing a welding wire flux-cored composition: respectively weighing 4.5kg of ferrochrome, 0.6kg of ferromanganese, 1.0kg of ferrosilicon, 0.6kg of ferromolybdenum, 0.1kg of graphite, 0.3kg of vanadium-titanium modifier 1 and 0.1kg of additive 1, mixing, filling into the welding wire coating layer 1 according to the filling rate of the welding wire flux-cored composition being 40%, and preparing the pre-filled welding wire;
preparing a welding wire: and rolling and forming the pre-filled welding wire seam, finely drawing and reducing the diameter again, and barreling or winding to prepare the tough flux-cored wire.
Examples 2 to 7
Examples 2 to 7: the difference between the tough type flux-cored wire and the embodiment 1 is that the raw material proportion and the preparation parameters are shown in the table 1, and the other preparation steps and the preparation environment are the same as those in the embodiment 1.
TABLE 1 ingredient ratio table for each raw material of examples 1 to 7
Example 8: a tough-type flux-cored wire differs from example 1 in that example 8 employs a wire coating layer 2 to coat a flux-cored composition.
Example 9: a tough-type flux-cored wire differs from example 1 in that the filling rate of the flux-cored composition of the wire used in example 9 is 42%, and the remaining manufacturing steps and manufacturing environment are the same as those of example 1.
Example 10: the difference between the tough type flux-cored wire and the embodiment 1 is that the filling rate of the flux-cored composition of the welding wire adopted in the embodiment 10 is 45 percent, and the rest of the preparation steps and the preparation environment are the same as the embodiment 1.
Comparative example
Comparative example 1: the difference between the tough flux-cored wire and the embodiment 1 is that the comparative example 1 adopts H08A high-quality carbon steel as a coating layer of the wire to prepare, and the rest preparation steps and preparation environment are the same as those of the embodiment 1.
Comparative example 2: the difference between the tough-type flux-cored wire and the embodiment 1 is that in a comparative example 2, Ce element doped in high-quality H08A carbon steel is used as a welding wire coating layer to prepare the tough-type flux-cored wire, and the rest of preparation steps and preparation environment are the same as those in the embodiment 1.
Comparative example 3: compared with the embodiment 1, the tough flux-cored wire is prepared in a comparative example 3 by doping Be element in H08A high-quality carbon steel as a wire coating layer, and the rest preparation steps and preparation environment are the same as those in the embodiment 1.
Comparative example 4: the difference between the tough flux-cored wire and the embodiment 1 is that 0.4kg of nano titanium dioxide particles are adopted in a comparative example 4 to replace the vanadium-titanium modifier added in the embodiment 1, and the rest of preparation steps and preparation environment are the same as those in the embodiment 1.
Comparative example 5: the difference between the tough flux-cored wire and the embodiment 1 is that 0.4kg of vanadium tetraoxide is adopted to replace the vanadium-titanium modifier added in the embodiment 1 in the comparative example 5, and the other preparation steps and the preparation environment are the same as those in the embodiment 1.
Comparative example 6: the difference between the tough type flux-cored wire and the embodiment 1 is that the filling rate of the flux-cored composition of the welding wire in the comparative example 6 is 35 percent, and the rest of the preparation steps and the preparation environment are the same as those in the embodiment 1.
Comparative example 7: the difference between the tough type flux-cored wire and the embodiment 1 is that the filling rate of the flux-cored composition of the welding wire in the comparative example 7 is 50%, and the rest of the preparation steps and the preparation environment are the same as those in the embodiment 1.
Comparative examples
Comparative example 1
The difference between the tough flux-cored wire and the embodiment 1 is that the vanadium-titanium modifier is not added in the comparative embodiment 1, and the other preparation conditions and the component proportion are the same as the embodiment 1.
Performance test
Mechanical property tests are respectively carried out on the tough type flux-cored wires prepared in examples 1 to 8, comparative examples 1 to 7 and comparative example 1.
Detection method/test method
The detection method comprises the following steps: (1) before welding, a 60-degree V-shaped groove is formed in a base metal through a planer, the height of a truncated edge is 1mm, and the two sides of the groove are polished by an angular polisher within the range of 30-50 mm to expose metallic luster;
(2) removing oil stains on two sides of the groove by using acetone, repeatedly wiping the prepared flux-cored wire by using a clean cloth, removing wire drawing powder remained on the surface, butting two test plates on a welding fixture, fixing the periphery and two sides of the groove by using bolts to prevent a steel plate from upwarping deformation during welding, reserving deformation amount during clamping of a base metal to prevent transverse shrinkage deformation of a welding seam, wherein the initial welding end is 1mm, and the final welding end is 3 mm;
(3) during welding, argon tungsten-arc welding is adopted, a semi-automatic welding wire feeder is used for feeding wires to ensure that the wire feeding speed is the same in each test process, the welding is carried out at a flat welding position, 5 layers of 7 welding processes are carried out, and the protective gas is pure Ar gas. And naturally cooling the welded test board along with air.
And (3) detection test: (1) taking and sampling a sample, and carrying out a tensile test on an electronic universal testing machine according to the GB/T2652-2008 'tensile test method for welding seams and deposited metals';
(2) the impact test is carried out on a JB-30B type impact tester according to the GB/T2650-2008 'weld joint impact test method', and the specific detection results are shown in the following table 2:
table 2 table for testing mechanical properties of tough type flux-cored wire
Performance analysis was performed from table 2 above:
(1) the composition ratios of the components in the embodiments 1-10 are combined with table 2, and it can be found that the tough flux-cored wire prepared by the method has good toughness strength and mechanical properties, which shows that the technical scheme of the method improves the structure of the powder filled in the flux-cored wire by screening the components in the flux-cored wire and optimizing the ratio among the components. The ferrosilicon and ferromanganese are compounded and added, deoxidation can be effectively carried out when the flux-cored wire is used, meanwhile, ferromanganese can effectively remove sulfur in the welding alloy, on the basis, the graphite particles are added, the welding process can be improved, the carbon is added for the surfacing alloy, the added ferrochrome, ferrotungsten and ferrovanadium can form various alloy carbide hard phases in the surfacing alloy, and the toughness and the wear resistance of the surfacing alloy matrix are enhanced.
(2) Comparing the performance of the example 1 with the comparative examples 1 to 3, it can be seen from the table 2 that the materials of the welding wire coating layers are adjusted in the comparative examples 1 to 3, the mechanical property and the toughness strength of the prepared welding wire material are reduced, which shows that the 5356# aluminum alloy is preferably selected and doped with rare earth elements for modification treatment in the technical scheme of the application, because the alpha phase strength and the toughness of the 5356# aluminum alloy are relatively high, and the beta phase in the eutectic structure is a hard brittle phase, the existence of the beta phase causes the plasticity and the strength of the cast lead alloy to be reduced, the elongation to be reduced, therefore, the ideal microstructure is relatively more, fine and uniformly distributed primary crystal alpha phase, and by adding the rare earth element, a compound formed by the rare earth element and an aluminum matrix can be used as nucleation particles, so that the crystallization core of molten metal during solidification is increased, the nucleation number is increased, and the mechanical property and the toughness strength of the aluminum alloy material are further improved.
(3) Compared with comparative examples 4-5, comparative example 1 and example 1, the composition of the vanadium-titanium modifier is changed in the welding wire material in the comparative examples 4-5, and as can be seen from table 2, the toughness strength is reduced, which shows that the technical scheme of the application adds vanadium and titanium elements to the material, the uniformity of the added material is not good due to simple mixing addition, the prepared composite can effectively form a good dispersed filling effect, meanwhile, the added vanadium element and graphite can form a VC hard phase in the using process, and simultaneously, the VC is stable in high-temperature performance, is not easy to deform and crack under the abrasion condition, the abrasion resistance of the surfacing metal is improved, while titanium is an element formed by strong carbide, forms ceramic hard phase particles, refines grains in a welding line, and simultaneously can improve the strength and toughness of the surfacing metal deposited, thereby further strengthening the toughness and the wear resistance of the surfacing alloy matrix.
(4) Compared with the comparative examples 6 to 7, the examples 1 and 9 to 10, the filling rate of the flux-cored composition of the welding wire is adjusted in the comparative examples 6 to 7, and as can be seen from the table 2, the toughness performance of the welding wire is slightly reduced, which shows that the filling rate of the flux-cored composition material is optimized by the technical scheme of the application, because the optimized filling rate of the application can effectively ensure that the welding wire is uniformly distributed in the length direction of the welding wire, and the powder is not expanded or mixed in the welding wire tube, the optimized filling rate of the technical scheme of the application can effectively avoid that the welding wire is easily subjected to a hollow tube phenomenon due to the excessively small filling rate, the welding wire is prevented from being easily broken during welding wire feeding, arcs are broken during welding, and air holes are generated in a welding line, so that the toughness and the wear resistance of the surfacing alloy substrate are enhanced.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (6)
1. The utility model provides a tough type flux-cored wire which characterized in that, tough type flux-cored wire includes welding wire coating and welding wire flux-cored composition, be equipped with in the welding wire coating along its length through's the chamber that holds, it is equipped with welding wire flux-cored composition to hold the intracavity, welding wire flux-cored composition includes following parts by weight material:
45-58 parts of ferrochrome;
6-10 parts of ferromanganese;
10-15 parts of ferrosilicon;
6-8 parts of ferromolybdenum;
1-3 parts of graphite;
1-2 parts of an additive; the welding wire flux-cored composition further comprises 3-5 parts of a vanadium-titanium modifier, wherein the molar ratio of vanadium elements to titanium elements in the vanadium-titanium modifier is 3: 8; the vanadium-titanium modifier is prepared by adopting the following scheme:
(1) respectively weighing 45-50 parts by weight of absolute ethyl alcohol, 6-8 parts by weight of butyl titanate, 10-15 parts by weight of absolute ethyl alcohol, 6-8 parts by weight of 5% acetic acid solution and 10-15 parts by weight of deionized water, placing the materials in a stirring device, stirring, mixing and collecting to obtain a mixed sol solution;
(2) adding an ammonium metavanadate solution with the mass fraction of 15% into the mixed sol solution according to the molar ratio of the vanadium element to the titanium element, stirring, mixing, standing for 6-8 h, collecting and standing the mixed solution, naturally drying in the air, grinding, then carrying out heat preservation treatment at 125-150 ℃ for 6-8 h, standing, cooling to room temperature, grinding and sieving to obtain the vanadium-titanium modifier.
2. The strong and tough flux-cored wire of claim 1, wherein the particle size of the vanadium-titanium modifier is 150-300 μm.
3. The strong and tough flux-cored wire of claim 2, wherein the filling rate of the flux-cored composition of the wire is 40-45%.
4. The strong and tough flux-cored wire of claim 2, wherein the material of the cladding layer of the wire is any one of 5356# aluminum alloy doped with Ce element or 5356# aluminum alloy doped with Be element.
5. The method for preparing the tough type flux-cored wire according to any one of claims 1 to 4, wherein the preparation step of the tough type flux-cored wire comprises the following steps:
s1, preparing a welding wire coating layer: firstly, placing an aluminum alloy in an argon environment for melting and refining, adding a Ce element or a Be element, slagging off, standing, cooling to room temperature, and then rolling and forming to prepare a welding wire coating layer;
s2, preparing a welding wire flux-cored composition; mixing ferrochrome, ferromanganese, ferrosilicon, ferromolybdenum, graphite, an additive and a vanadium-titanium modifier according to a formula, and filling the mixture into a welding wire coating layer to prepare a prefilled welding wire;
s3, preparing a welding wire: and rolling and forming the pre-filled welding wire seam, finely drawing and reducing the diameter again, and barreling or winding to prepare the tough flux-cored wire.
6. The preparation method of the tough type flux-cored wire according to claim 5, wherein the additive in the step S2 comprises the following components in a mass ratio of 1-2: 2-3: 3-5 parts of a mixture of quartz sand, zircon sand and rutile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN1923435A (en) * | 2006-09-08 | 2007-03-07 | 攀钢集团攀枝花钢铁研究院 | Pile-up welding flux-cored wire for restoring cold rolling intermediate roller operational layer and method for manufacturing same |
| JP4722811B2 (en) * | 2006-10-23 | 2011-07-13 | 日鐵住金溶接工業株式会社 | Flux-cored wire for submerged arc welding for high-strength steel. |
| CN101185997A (en) * | 2006-11-16 | 2008-05-28 | 上海斯米克威尔柯焊材有限公司 | Method for manufacturing aluminum alloy seamless flux-cored wire |
| CN100496865C (en) * | 2007-12-17 | 2009-06-10 | 徐龙江 | High-wearing high performance-cost ratio flux-cored wire |
| CN101602150B (en) * | 2009-07-15 | 2011-08-17 | 中天仕名科技集团有限公司 | Impact abrasion resistant flux-cored wire used for hammer head of hammer crusher |
| JP5387192B2 (en) * | 2009-07-16 | 2014-01-15 | 新日鐵住金株式会社 | Flux-cored wire for gas shield welding |
| CN103551757B (en) * | 2013-10-31 | 2015-11-11 | 北京工业大学 | Soldering alusil alloy seamless flux-cored wire, preparations and applicatio |
| CN103769770B (en) * | 2014-01-23 | 2016-03-30 | 江苏科技大学 | The hardfacing of a kind of vanadium titanium niobium complex intensifying is used without slag self-protection flux-cored wire |
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