CN110936054A - Abrasion-resistant surfacing multi-strand stranded welding wire - Google Patents
Abrasion-resistant surfacing multi-strand stranded welding wire Download PDFInfo
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- CN110936054A CN110936054A CN201911169344.4A CN201911169344A CN110936054A CN 110936054 A CN110936054 A CN 110936054A CN 201911169344 A CN201911169344 A CN 201911169344A CN 110936054 A CN110936054 A CN 110936054A
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- welding
- hardfacing
- wire
- flux core
- stranded
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Classifications
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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
-
- 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
Abstract
The invention discloses a hardfacing multi-strand stranded welding wire which comprises a sheath and a flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 24-36% of high-carbon ferrochrome, 10-14% of low-carbon ferronickel, 9-10.5% of cobalt iron, 2-2.8% of rare earth ferrosilicon, 0.5-1.6% of nano titanium dioxide, 1-3% of ferromanganese, 0.5-1.2% of cryolite, 1-2% of zirconite, 1.5-3.2% of silica fume, 1-1.8% of potassium carbonate, 1-4% of ferroboron, 0.5-1.6% of ferroniobium, 0.5-1.5% of ferromolybdenum, 0.2-1% of ferrovanadium and the balance of iron powder. The invention has strong welding crack resistance, good welding process performance, high deposition efficiency, high impact toughness and good high-temperature wear resistance, can be used for all-position welding.
Description
Technical Field
The invention relates to the technical field of welding wires, in particular to a hardfacing stranded welding wire.
Background
The wear-resistant plate is widely used for producing wear-resistant substrates, sieve plates and other parts of various pipelines and mechanical equipment in industrial material conveying systems. Mechanical wear is generally caused by contact between various materials and metal parts made of alloy steel, which, if the entire part is replaced due to a partial wear failure, would be extremely wasteful and would greatly increase production costs.
The general wear-resistant surfacing material used at present has high carbon and alloy elements, and mainly utilizes carbon and chromium, titanium, vanadium, niobium and the like to form carbide hard particles to improve the hardness of metal of a surfacing layer so as to improve the wear resistance of the surfacing layer.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a hardfacing stranded welding wire.
A hardfacing stranded wire comprises a flux core and a sheath coated on the outer side of the flux core; the flux core comprises the following raw materials in percentage by mass: 24-36% of high-carbon ferrochrome, 10-14% of low-carbon ferronickel, 9-10.5% of cobalt iron, 2-2.8% of rare earth ferrosilicon, 0.5-1.6% of nano titanium dioxide, 1-3% of ferromanganese, 0.5-1.2% of cryolite, 1-2% of zirconite, 1.5-3.2% of silica fume, 1-1.8% of potassium carbonate, 1-4% of ferroboron, 0.5-1.6% of ferroniobium, 0.5-1.5% of ferromolybdenum, 0.2-1% of ferrovanadium and the balance of iron powder.
Preferably, the outer skin is a H08A steel strip.
Preferably, the diameter of the hardfacing multi-strand stranded wire is 1-1.4mm, and the filling rate of the flux core is 32-36%.
Preferably, the mass ratio of the cryolite to the rare earth ferrosilicon is 0.6-1: 2.2-2.6.
Preferably, the mass ratio of the low-carbon ferronickel to the ferrovanadium is 11-13: 0.4-0.8.
Preferably, the flux core raw materials comprise the following components in percentage by mass: 28-32% of high-carbon ferrochrome, 11-13% of low-carbon ferronickel, 9.5-10% of cobalt iron, 2.2-2.6% of rare earth ferrosilicon, 0.8-1.4% of nano titanium dioxide, 1.5-2.5% of ferromanganese, 0.6-1% of cryolite, 1.2-1.8% of zircon, 1.8-3% of silica fume, 1.2-1.6% of potassium carbonate, 2-3% of ferroboron, 0.8-1.4% of ferroniobium, 0.8-1.2% of ferromolybdenum, 0.4-0.8% of ferrovanadium and the balance of iron powder.
According to the welding method of the hardfacing stranded welding wire, the welding wire is baked at the baking temperature T ℃ for T min, and T and T meet the following relation: t ═ K1+K2t, wherein t is more than or equal to 120 and less than or equal to 240, and K is more than or equal to 2951≤305，0.6≤K2Less than or equal to 0.8; then, overlaying welding is adopted, the welding current is 400-450A, and the welding voltage is 32-34V.
According to the invention, cryolite is adopted to reduce the content of diffusible hydrogen in the welding seam and improve the crack resistance of the welding seam, and the rare earth ferrosilicon has the effects of refining crystal grains and promoting dispersion and precipitation of high-stability hard phases, so that the toughness and the high-temperature wear resistance are obviously improved; the low-carbon ferronickel and ferrovanadium are compounded, alloy elements are transferred into a welding seam, a high-toughness matrix structure and a large number of wear-resistant hard phases which are uniformly distributed and have good high-temperature stability are formed, and the welding seam metal is increased by matching with the action of iron powder, so that the deposition efficiency is improved.
Researches find that the effective way for enhancing the surface strength and improving the wear resistance of the material is to improve the surface hardness and the toughness of the material, and the ideal tissue structure is that particles with high melting point, high hardness and good stability are uniformly distributed on a tough and continuous matrix. The applicant finds that the welding wire is subjected to the heat baking treatment before welding through a large amount of previous process experiments, and T is equal to K1+K2t, wherein t is more than or equal to 120 and less than or equal to 240, and K is more than or equal to 2951≤305，0.6≤K2Less than or equal to 0.8; the flux-cored wire has good welding process performance, the flux-cored components can obviously increase austenite phase, the toughness of the alloy is improved, the toughening of the alloy structure is obvious, the toughness of the overlaying layer is better, the crack resistance of the overlaying layer is improved, meanwhile, the nanometer titanium dioxide can effectively refine deposited metal grains, increase the joint strength, improve the forming performance, reduce the welding dilution rate of the wear-resistant plate, the internal structure is uniform, the solidified metal grains of the welding line are fine, strengthening phase is separated out from the grains, and the wear resistance is excellent.
The invention has strong welding crack resistance, reduces the dust generation amount by more than 34 percent compared with the commercial flux-cored wire according to the test method of national standard GB1225-76, has good welding process performance, can carry out all-position welding, has very high deposition efficiency, high impact toughness and good high temperature abrasion resistance, has the hardness of a welded wear-resisting plate of HRC63, the abrasive wear resistance is 30 times of that of Q235 steel, the 30-degree angle erosion wear resistance is 12 times of that of the Q235 steel, the bonding strength is 60-67MPa, and is particularly suitable for being used under the working condition of resisting the high temperature abrasion of more than 750 ℃.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
A hardfacing multi-strand stranded welding wire comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 24% of high-carbon ferrochrome, 14% of low-carbon ferronickel, 9% of cobalt iron, 2.8% of rare earth ferrosilicon, 0.5% of nano titanium dioxide, 3% of ferromanganese, 0.5% of cryolite, 2% of zirconite, 1.5% of silica fume, 1.8% of potassium carbonate, 1% of ferroboron, 1.6% of ferroniobium, 0.5% of ferromolybdenum, 1% of ferrovanadium and the balance of iron powder.
The diameter of the hardfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 32%.
According to the welding method of the hardfacing stranded welding wire, the welding wire is baked at the temperature of 377 ℃ for 120 min; and then, overlaying welding is adopted, the welding current is 400A, and the welding voltage is 34V.
Example 2
A hardfacing multi-strand stranded welding wire comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 36% of high-carbon ferrochrome, 10% of low-carbon ferronickel, 10.5% of cobalt iron, 2% of rare earth ferrosilicon, 1.6% of nano titanium dioxide, 1% of ferromanganese, 1.2% of cryolite, 1% of zirconite, 3.2% of silica fume, 1% of potassium carbonate, 4% of ferroboron, 0.5% of ferroniobium, 1.5% of ferromolybdenum, 0.2% of ferrovanadium and the balance of iron powder.
The diameter of the hardfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 36%.
According to the welding method of the hardfacing stranded welding wire, the welding wire is baked at 487 ℃ for 240 min; and then, overlaying welding is adopted, the welding current is 450A, and the welding voltage is 32V.
Example 3
A hardfacing multi-strand stranded welding wire comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 28% of high-carbon ferrochrome, 13% of low-carbon ferronickel, 9.5% of cobalt iron, 2.6% of rare earth ferrosilicon, 0.8% of nano titanium dioxide, 2.5% of ferromanganese, 0.6% of cryolite, 1.8% of zirconite, 1.8% of silica fume, 1.6% of potassium carbonate, 2% of ferroboron, 1.4% of ferroniobium, 0.8% of ferromolybdenum, 0.8% of ferrovanadium and the balance of iron powder.
The diameter of the hardfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 33%.
According to the welding method of the hardfacing stranded welding wire, the welding wire is baked at the baking temperature of 400 ℃ for 150 min; then, overlaying welding is adopted, the welding current is 440A, and the welding voltage is 32.5V.
Example 4
A hardfacing multi-strand stranded welding wire comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 32% of high-carbon ferrochrome, 11% of low-carbon ferronickel, 10% of cobalt iron, 2.2% of rare earth ferrosilicon, 1.4% of nano titanium dioxide, 1.5% of ferromanganese, 1% of cryolite, 1.2% of zirconite, 3% of silica fume, 1.2% of potassium carbonate, 3% of ferroboron, 0.8% of ferroniobium, 1.2% of ferromolybdenum, 0.4% of ferrovanadium and the balance of iron powder.
The diameter of the hardfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 35%.
According to the welding method of the hardfacing stranded welding wire, the welding wire is baked at the baking temperature of 455 ℃ for 210 min; then, overlaying welding is adopted, the welding current is 420A, and the welding voltage is 33.5V.
Example 5
A hardfacing multi-strand stranded welding wire comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 30% of high-carbon ferrochrome, 12% of low-carbon ferronickel, 9.8% of cobalt iron, 2.4% of rare earth ferrosilicon, 1.1% of nano titanium dioxide, 2% of ferromanganese, 0.8% of cryolite, 1.5% of zirconite, 2.4% of silica fume, 1.4% of potassium carbonate, 2.5% of ferroboron, 1.1% of ferroniobium, 1% of ferromolybdenum, 0.6% of ferrovanadium and the balance of iron powder.
The diameter of the hardfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 34%.
According to the welding method of the hardfacing stranded welding wire, the welding wire is baked at 426 ℃ for 180 min; and then, overlaying welding is adopted, the welding current is 430A, and the welding voltage is 33V.
The dust content of the wire is reduced by 38% compared with the commercial flux-cored wire, the hardness of a wear-resisting plate after welding is HRC63, the abrasive wear performance is 30 times of that of Q235 steel, the 30-degree angle erosion wear performance is 12 times of that of Q235 steel, and the bonding strength is 67 MPa.
Comparative example 1
A multi-strand stranded welding wire for surfacing comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 30% of high-carbon ferrochrome, 12% of low-carbon ferronickel, 9.8% of cobalt iron, 2.4% of rare earth ferrosilicon, 1.1% of nano titanium dioxide, 2% of ferromanganese, 1.5% of zirconite, 2.4% of silica fume, 1.4% of potassium carbonate, 2.5% of ferroboron, 1.1% of ferroniobium, 1% of ferromolybdenum, 0.6% of ferrovanadium and the balance of iron powder.
The diameter of the surfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 34%.
According to the welding method for surfacing the stranded welding wires, the welding wires are baked at 426 ℃ for 180 min; and then, overlaying welding is adopted, the welding current is 430A, and the welding voltage is 33V.
The dust content of the comparative example is reduced by 26 percent compared with the commercial flux-cored wire, the hardness of a wear-resisting plate after welding is HRC60, the abrasive wear resistance is 12 times of that of Q235 steel, the 30-degree angle erosion wear resistance is 4 times of that of Q235 steel, and the bonding strength is 45 MPa.
Comparative example 2
A multi-strand stranded welding wire for surfacing comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 30% of high-carbon ferrochrome, 12% of low-carbon ferronickel, 9.8% of cobalt iron, 1.1% of nano titanium dioxide, 2% of ferromanganese, 0.8% of cryolite, 1.5% of zirconite, 2.4% of silica fume, 1.4% of potassium carbonate, 2.5% of ferroboron, 1.1% of ferroniobium, 1% of ferromolybdenum, 0.6% of ferrovanadium and the balance of iron powder.
The diameter of the surfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 34%.
According to the welding method for surfacing the stranded welding wires, the welding wires are baked at 426 ℃ for 180 min; and then, overlaying welding is adopted, the welding current is 430A, and the welding voltage is 33V.
The dust content of the comparative example is reduced by 24 percent compared with the commercial flux-cored wire, the hardness of the wear-resisting plate after welding is HRC57, the abrasive wear resistance is 5 times of that of Q235 steel, the 30-degree angle erosion wear resistance is 6 times of that of Q235 steel, and the bonding strength is 36 MPa.
Comparative example 3
A multi-strand stranded welding wire for surfacing comprises a flux core and a sheath coated on the outer side of the flux core, wherein the sheath is an H08A steel strip; the flux core comprises the following raw materials in percentage by mass: 30% of high-carbon ferrochrome, 12% of low-carbon ferronickel, 9.8% of cobalt iron, 2.4% of rare earth ferrosilicon, 1.1% of nano titanium dioxide, 2% of ferromanganese, 0.8% of cryolite, 1.5% of zirconite, 2.4% of silica fume, 1.4% of potassium carbonate, 2.5% of ferroboron, 1.1% of ferroniobium, 1% of ferromolybdenum, 0.6% of ferrovanadium and the balance of iron powder.
The diameter of the surfacing multi-strand stranded welding wire is 1-1.4mm, and the filling rate of the flux core is 34%.
According to the welding method for surfacing the stranded welding wires, the welding wires are baked at the baking temperature of 400 ℃ for 180 min; and then, overlaying welding is adopted, the welding current is 430A, and the welding voltage is 33V.
The dust content of the comparative example is reduced by 22 percent compared with the commercial flux-cored wire, the hardness of a wear-resisting plate after welding is HRC60, the abrasive wear resistance is 10 times of that of Q235 steel, the erosion wear resistance at an angle of 30 degrees is 3 times of that of Q235 steel, and the bonding strength is 41 MPa.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A hardfacing stranded welding wire is characterized by comprising a flux core and a sheath coated on the outer side of the flux core; the flux core comprises the following raw materials in percentage by mass: 24-36% of high-carbon ferrochrome, 10-14% of low-carbon ferronickel, 9-10.5% of cobalt iron, 2-2.8% of rare earth ferrosilicon, 0.5-1.6% of nano titanium dioxide, 1-3% of ferromanganese, 0.5-1.2% of cryolite, 1-2% of zirconite, 1.5-3.2% of silica fume, 1-1.8% of potassium carbonate, 1-4% of ferroboron, 0.5-1.6% of ferroniobium, 0.5-1.5% of ferromolybdenum, 0.2-1% of ferrovanadium and the balance of iron powder.
2. The hardfacing stranded welding wire of claim 1, wherein the sheath is a H08A steel strip.
3. The hardfacing stranded wire of claim 1, wherein the hardfacing stranded wire has a diameter of 1-1.4mm and the fill rate of the flux core is 32-36%.
4. The hardfacing stranded wire of claim 1, wherein the cryolite to rare earth ferrosilicon mass ratio is 0.6-1: 2.2-2.6.
5. The hardfacing stranded wire of claim 1, wherein the mass ratio of low carbon nickel iron to vanadium iron is 11-13: 0.4-0.8.
6. The hardfacing stranded wire of claim 1, wherein the flux-cored raw materials comprise, in mass percent: 28-32% of high-carbon ferrochrome, 11-13% of low-carbon ferronickel, 9.5-10% of cobalt iron, 2.2-2.6% of rare earth ferrosilicon, 0.8-1.4% of nano titanium dioxide, 1.5-2.5% of ferromanganese, 0.6-1% of cryolite, 1.2-1.8% of zircon, 1.8-3% of silica fume, 1.2-1.6% of potassium carbonate, 2-3% of ferroboron, 0.8-1.4% of ferroniobium, 0.8-1.2% of ferromolybdenum, 0.4-0.8% of ferrovanadium and the balance of iron powder.
7. A method of welding a hardfacing stranded welding wire according to any of claims 1-6, wherein the wire is baked at a temperature T ° and for a time T min, wherein T and T are in accordance with the following relationship: t ═ K1+K2t, wherein t is more than or equal to 120 and less than or equal to 240, and K is more than or equal to 2951≤305，0.6≤K2Less than or equal to 0.8; then, overlaying welding is adopted, the welding current is 400-450A, and the welding voltage is 32-34V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169344.4A CN110936054A (en) | 2019-11-26 | 2019-11-26 | Abrasion-resistant surfacing multi-strand stranded welding wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169344.4A CN110936054A (en) | 2019-11-26 | 2019-11-26 | Abrasion-resistant surfacing multi-strand stranded welding wire |
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| Publication Number | Publication Date |
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| CN110936054A true CN110936054A (en) | 2020-03-31 |
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| CN201911169344.4A Withdrawn CN110936054A (en) | 2019-11-26 | 2019-11-26 | Abrasion-resistant surfacing multi-strand stranded welding wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113547252A (en) * | 2021-06-29 | 2021-10-26 | 广东省科学院中乌焊接研究所 | High-toughness and high-wear-resistance wire for additive manufacturing of hot working die and preparation method thereof |
-
2019
- 2019-11-26 CN CN201911169344.4A patent/CN110936054A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113547252A (en) * | 2021-06-29 | 2021-10-26 | 广东省科学院中乌焊接研究所 | High-toughness and high-wear-resistance wire for additive manufacturing of hot working die and preparation method thereof |
| CN113547252B (en) * | 2021-06-29 | 2022-02-22 | 广东省科学院中乌焊接研究所 | High-toughness and high-wear-resistance wire for additive manufacturing of hot working die and preparation method thereof |
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