CN111618472B - Bottoming layer submerged arc flux-cored wire for repairing zero-section continuous casting roller of continuous casting machine - Google Patents
Bottoming layer submerged arc flux-cored wire for repairing zero-section continuous casting roller of continuous casting machine Download PDFInfo
- Publication number
- CN111618472B CN111618472B CN202010484330.8A CN202010484330A CN111618472B CN 111618472 B CN111618472 B CN 111618472B CN 202010484330 A CN202010484330 A CN 202010484330A CN 111618472 B CN111618472 B CN 111618472B
- Authority
- CN
- China
- Prior art keywords
- powder
- flux
- parts
- carbon
- cored wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a bottoming layer submerged arc flux-cored wire for repairing a zero-section continuous casting roller of a continuous casting machine, which comprises a low-carbon cold-rolled steel strip and powder, wherein the powder comprises the following components in parts by weight: 21-27 parts of micro-carbon ferrochrome powder, 0-1 part of 45 ferrosilicon powder, 0.5-1.5 parts of medium-carbon ferromanganese powder, 1.5-2.5 parts of ferromolybdenum powder, 1.5-2.5 parts of nickel powder, 0-0.7 part of ferrovanadium powder and 10-15 parts of reduced iron powder. The submerged arc flux-cored wire is characterized in that nickel powder is added to the submerged arc flux-cored wire, more nickel elements are transited to a welding layer, the impact toughness and the wear resistance of a bottoming layer are improved, meanwhile, the nickel elements are transited to surface layer surfacing metal when a welding working layer is welded, the surface wear resistance and the low-temperature impact toughness of a continuous casting roller are improved, the service life is prolonged, the flux-cored wire is less in raw material variety, simple in production process and low in comprehensive cost.
Description
Technical Field
The invention belongs to the technical field of metal material surface repair, relates to a flux-cored wire, and particularly relates to a bottoming layer submerged arc flux-cored wire for repairing a zero-section continuous casting roller of a continuous casting machine.
Background
The continuous casting roller is a key part of a continuous casting machine, continuously contacts with a high-temperature plate blank which is not solidified inside, simultaneously bears the repeated action of cooling water, has very harsh working conditions, is easy to generate damage forms such as cold and hot fatigue cracks, oxidation corrosion, abrasion and the like on the roller surface, seriously or even causes the shutdown accident of the broken roller, and has to be repaired or scrapped when the cracks on the roller surface extend to a certain depth. The service life of the continuous casting roll is often a key factor for restricting the production operation rate of a continuous casting machine, so that the continuous casting roll is required to have enough high-temperature strength, high-temperature oxidation and corrosion resistance and high-temperature wear resistance, particularly high cold and thermal fatigue resistance.
The main problem existing in the prior art of resurfacing welding for manufacturing the roller is that the original roller and the resurfacing welding material are easy to generate tiny cracks and the layered tearing and falling off in the using process, so that the development of a priming layer material with good bonding performance and excellent physicochemical performance is urgently needed besides the adjustment of process parameters.
CN 105965174A discloses a continuous casting roller bottom surface surfacing material, which comprises the following components in percentage by weight: 0.03-0.1% of C; p is less than or equal to 0.025 percent; s is less than or equal to 0.03 percent; 0.3-0.5% of Si; mn 1-1.5%; cr 16-20%; ba 1-3%; 0.5-1.2% of MnS; 1.2-1.8% of Nil; w2-3%; v1-2%; nb 7-10%; 0.1 to 0.3 percent of Pt0; zr0.05-0.2%; 20.1-0.5% of TiO20; 20.6-1.2% of CaF20; the balance being Fe. When the surfacing material for the bottom surface of the continuous casting roller provided by the invention is used for surfacing, the surfacing process performance is good, the surfacing layer has small friction coefficient, good impact resistance and intermetallic wear resistance, and can be subjected to multi-layer surfacing without cracks and easy to machine.
CN 110539101A discloses an open arc self-shielded flux-cored wire for continuous casting roller surfacing of a fan-shaped section of a continuous casting machine, wherein the powder accounts for 39-42% of the total weight of the wire, and the powder comprises the following components in percentage by mass: 4-6.5% of metallic nickel powder, 1-2.6% of ferromolybdenum, 1-1.2% of ferroniobium, 19.5-26% of micro-carbon ferrochrome, 1-2.6% of chromium nitride, 0.8-1.5% of 45# ferrosilicon, 1.8-3.1% of electrolytic manganese, 0.12-0.26% of sodium fluoroaluminate, 1.0-2.6% of dolomite, 4-8.5% of rutile, 1.5-3.6% of fluorite, 0.2-0.5% of aluminum powder, 0.2-0.4% of magnesium powder and the balance of iron powder. The basic material is a cold-rolled low-carbon steel strip, and the carbon content is 0.05-0.08%. The invention has the beneficial effects that: the welding process of the self-shielded flux-cored wire has the advantages of excellent performance, attractive forming, less splashing, high-temperature strength, oxidation resistance, corrosion resistance and thermal fatigue resistance, and the metal of the overlaying layer is chromium, nickel and molybdenum low-carbon alloy.
Therefore, in the prior art, the continuous casting roller is mostly protected and repaired by the open arc welding wire, but the open arc welding wire has the defects of various raw materials, complex production process, long manufacturing period, high comprehensive production cost and the like.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a submerged arc flux-cored wire for a bottoming layer of a zero-section continuous casting roller, wherein nickel powder is added into the submerged arc flux-cored wire to transit more nickel elements to a welding layer, so that the impact toughness and the wear resistance of the bottoming layer are improved, meanwhile, the nickel elements are transited to a surface layer in a surfacing mode when a working layer is welded, so that the surface wear resistance and the low-temperature impact toughness of the continuous casting roller are improved, the service life is prolonged, the types of raw materials of the flux-cored wire are few, the production process is simple, and the comprehensive cost is low.
In order to achieve the technical effect, the invention adopts the following technical scheme:
the invention provides a bottoming layer submerged arc flux-cored wire for repairing a zero-section continuous casting roller of a continuous casting machine, which comprises a low-carbon cold-rolled steel strip and powder, wherein the powder comprises the following components in parts by weight: 21-27 parts of micro-carbon ferrochrome powder, 0-1 part of 45 ferrosilicon powder, 0.5-1.5 parts of medium-carbon ferromanganese powder, 1.5-2.5 parts of ferromolybdenum powder, 1.5-2.5 parts of nickel powder, 0-0.7 part of ferrovanadium powder and 10-15 parts of reduced iron powder.
Wherein the fine carbon ferrochrome powder may be 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, etc., the 45 silicon iron powder may be 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, etc., the medium carbon ferromanganese powder may be 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1.0 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, etc., the ferromolybdenum powder may be 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, etc., the nickel powder may be 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.1.2 parts, 2.2 parts, 2.3 parts, 2.4 parts, etc., the nickel powder may be 1.6 parts, 1.7 parts, 1.8 parts, 1.9, 2 parts, 2.2, 2, 2.3, 2.4 parts, 13, 12, 5, 3, 13, 3, 5, 3, 13, 5, 3, 13, 3, etc., parts, 14, 3, etc., parts, 3, etc., by weight, 3, 4, 3, etc., of reduced iron, or 5 parts by weight, etc., of iron powder, etc., the weight of the nickel powder may be enumerated as the number of which is not limited to 5 parts by weight of iron powder, other values not listed in the above numerical ranges are also applicable.
In a preferred embodiment of the present invention, the mass ratio of the manganese element to the silicon element in the flux-cored wire is 3 to 3.6:1, for example, 3.1:1, 3.2:1, 3.3:1, 3.4:1, or 3.5:1, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
According to the invention, the low-price micro-carbon ferrochrome powder is added to provide a main Cr element for the welding layer, so that the welding layer meets a 0Cr17 component system; because the deoxidation with silicon or manganese alone is difficult to remove the deoxidation product, in the invention, silicon-manganese combined deoxidation is adopted, the manganese/silicon ratio is controlled to be 3-3.6, and the SiO generated is controlled2Compounding with MnO to form silicate (MnO. SiO)2) Welding defects such as metal pores and slag inclusion of the welding layer can be effectively avoided; molybdenum iron powder and ferrovanadium powder are properly added to back up molybdenum and vanadium elements on the welding layer, so that the strength and the impact toughness of the welding layer are improved.
As a preferable technical scheme of the invention, the content of carbon in the micro-carbon ferrochrome powder is 0.01-0.10 wt%, the content of chromium is 60-70 wt%, preferably the content of carbon is 0.06 wt%, and the content of chromium is 65 wt%.
The carbon content may be 0.02 wt%, 0.03 wt%, 0.04 wt%, 0.05 wt%, 0.06 wt%, 0.07 wt%, 0.08 wt%, or 0.09 wt%, and the chromium content may be 61 wt%, 62 wt%, 63 wt%, 64 wt%, 65 wt%, 66 wt%, 67 wt%, 68 wt%, or 69 wt%, but is not limited to the values listed, and other values not listed in the above-mentioned ranges of values are also applicable.
As a preferable technical scheme of the invention, the carbon content of the medium-carbon manganese iron powder is 1.0-2.0 wt%, the manganese content is 75-80 wt%, preferably the carbon content is 1.5 wt%, and the manganese content is 78 wt%.
The carbon content may be 1.1 wt%, 1.2 wt%, 1.3 wt%, 1.4 wt%, 1.5 wt%, 1.6 wt%, 1.7 wt%, 1.8 wt%, or 1.9 wt%, but is not limited to the recited values, and other values not recited in the above-mentioned numerical ranges are also applicable.
As a preferable technical scheme of the invention, the content of silicon in the 45-silicon iron powder is 45 wt%.
In a preferred embodiment of the present invention, the content of molybdenum in the roughcast iron powder is 50 to 60 wt%, such as 51 wt%, 52 wt%, 53 wt%, 54 wt%, 55 wt%, 56 wt%, 57 wt%, 58 wt% or 59 wt%, but not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable, and the content of molybdenum is preferably 55 wt%.
In a preferred embodiment of the present invention, the vanadium content in the ferrovanadium powder is 45 to 55 wt%, such as 46 wt%, 47 wt%, 48 wt%, 49 wt%, 50 wt%, 51 wt%, 52 wt%, 53 wt% or 54 wt%, but not limited to the recited values, and other values within the range are also applicable, and preferably 50 wt%.
As a preferred technical scheme of the invention, the particle size of the medicinal powder is 60-200 meshes, such as 80 meshes, 100 meshes, 120 meshes, 150 meshes or 180 meshes, etc., and the particle size of 160-200 meshes is not more than 15%, such as 1%, 2%, 5%, 8%, 10% or 12%, etc., but is not limited to the enumerated values, and other unrecited values in the numerical ranges are also applicable.
In a preferred embodiment of the present invention, the filling rate of the powder is 38 to 45%, such as 39%, 40%, 41%, 42%, 43% or 44%, but not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
Preferably, the diameter Φ of the flux-cored wire is 2.8 to 4.0mm, such as 2.9mm, 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, or 3.9mm, but is not limited to the recited values, and other values not recited in the range of the values are also applicable.
In a preferred embodiment of the present invention, the flux used in combination with the flux-cored wire includes SJ201 and/or SJ 414.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the invention provides a submerged arc flux-cored wire for repairing a zero-section continuous casting roller of a continuous casting machine, which is used for repairing a bottom layer, wherein the carbon content of the flux-cored wire is low, the total carbon content is controlled to be below 0.05%, the plasticity, the toughness and the welding performance of weld metal can be effectively improved, alloy elements are properly added, the fusion property between base metal and surfacing layer metal is improved, and the bonding strength of a welding layer is improved;
(2) the invention provides a bottoming layer submerged arc flux-cored wire for repairing a zero-section continuous casting roller of a continuous casting machine, wherein the flux-cored wire is not added with non-metallic mineral elements, the utilization rate of the flux-cored wire is high, and the welding manufacturability is good;
(3) the invention provides a bottoming layer submerged arc flux-cored wire for repairing a zero-section continuous casting roller of a continuous casting machine, wherein pure metal raw materials are not added into the flux-cored wire, so that the raw material cost is low and is about 40-60% of the cost of similar welding wire products;
(4) the invention provides a submerged arc flux-cored wire for repairing a bottoming layer of a zero-section continuous casting roller of a continuous casting machine, which is applied to the zero-section continuous casting roller of a 3# wire and a 2# wire continuous casting machine in a saddle steel steelmaking main factory and has a good online use state.
Detailed Description
For the purpose of facilitating an understanding of the present invention, the present invention will now be described by way of examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides a zero section continuous casting roller of conticaster restores with bottoming layer submerged arc flux-cored wire, flux-cored wire includes low carbon cold rolling steel band and powder, according to parts by weight, the composition of powder includes: 21 parts of micro-carbon ferrochrome powder, 0.6 part of 45 ferrosilicon powder, 1.2 parts of medium-carbon ferromanganese powder, 1.5 parts of ferromolybdenum powder, 2.1 parts of nickel powder, 0.2 part of ferrovanadium powder and 13 parts of reduced iron powder;
the wire diameter of the welding wire is phi 3.2mm, and the filling coefficient is 39.6 percent.
Wherein the carbon content of the micro-carbon ferrochrome powder is 0.06%, and the chromium content is 65 wt%; the content of carbon in the medium-carbon manganese iron powder is 1.5 wt%, and the content of manganese is 78 wt%; the content of silicon in the 45-silicon iron powder is 45 wt%, the content of molybdenum in the molybdenum iron powder is 55 wt%, and the content of vanadium in the vanadium iron powder is 50 wt%.
The hardness is HV288 after double-layer surfacing.
The welding wire of the embodiment is matched with a 1Cr13 system continuous casting roller working layer surfacing welding wire, a first priming layer and two working layer welding wires are surfacing welded on a 42CrMo base metal, the post-welding hardness can reach HRC47 +/-2.5, the bonding strength of the welding layer is high, and the phenomena of peeling, large block peeling and the like do not occur after the welding wire is used on line.
Example 2
The embodiment provides a zero section continuous casting roller of conticaster restores with bottoming layer submerged arc flux-cored wire, flux-cored wire includes low carbon cold rolling steel band and powder, according to parts by weight, the composition of powder includes: 23 parts of micro-carbon ferrochrome powder, 0.5 part of 45 ferrosilicon powder, 0.9 part of medium-carbon ferromanganese powder, 2.2 parts of ferromolybdenum powder, 2.4 parts of nickel powder, 0.1 part of ferrovanadium powder and 12 parts of reduced iron powder.
The wire diameter of the welding wire is phi 3.2mm, and the filling coefficient is 41.1 percent.
Wherein the carbon content of the micro-carbon ferrochrome powder is 0.06%, and the chromium content is 65 wt%; the content of carbon in the medium-carbon manganese iron powder is 1.5 wt%, and the content of manganese is 78 wt%; the content of silicon in the 45-silicon iron powder is 45 wt%, the content of molybdenum in the molybdenum iron powder is 55 wt%, and the content of vanadium in the vanadium iron powder is 50 wt%.
And the hardness is HV302 after double layers are deposited.
The welding wire of the embodiment is matched with a surfacing welding wire of a working layer of a 2Cr13 system continuous casting roller, the hardness of the welding wire of one layer of the priming coat and two layers of the working layer can reach HRC49 +/-1.5 after welding, the bonding strength of the welding layer is high, and the welding wire does not have the phenomena of peeling, large block peeling and the like after being used on line.
Example 3
The embodiment provides a zero section continuous casting roller of conticaster restores with bottoming layer submerged arc flux-cored wire, flux-cored wire includes low carbon cold rolling steel band and powder, according to parts by weight, the composition of powder includes: 25 parts of micro-carbon ferrochrome powder, 0.6 part of 45 ferrosilicon powder, 1.2 parts of medium-carbon ferromanganese powder, 2 parts of ferromolybdenum powder, 2 parts of nickel powder, 0.1 part of ferrovanadium powder and 10 parts of reduced iron powder.
The wire diameter of the welding wire is phi 2.8mm, and the filling coefficient is 42%.
Wherein the carbon content of the micro-carbon ferrochrome powder is 0.06%, and the chromium content is 65 wt%; the content of carbon in the medium-carbon manganese iron powder is 1.5 wt%, and the content of manganese is 78 wt%; the content of silicon in the 45-silicon iron powder is 45 wt%, the content of molybdenum in the molybdenum iron powder is 55 wt%, and the content of vanadium in the vanadium iron powder is 50 wt%.
The hardness is HV298 after surfacing of the double layers.
The welding wire of the embodiment is matched with a surfacing welding wire of a working layer of a 1Cr13 system continuous casting roller, the hardness of the welding wire of one layer of the priming coat and two layers of the working layer can reach HRC46 +/-1.2 after welding, the bonding strength of the welding layer is high, and the welding wire does not have the phenomena of peeling, large block peeling and the like after being used on line.
Example 4
The embodiment provides a zero section continuous casting roller of conticaster restores with bottoming layer submerged arc flux-cored wire, flux-cored wire includes low carbon cold rolling steel band and powder, according to parts by weight, the composition of powder includes: 22 parts of micro-carbon ferrochrome powder, 0.7 part of 45 ferrosilicon powder, 1.3 parts of medium-carbon ferromanganese powder, 1.7 parts of ferromolybdenum powder, 2.2 parts of nickel powder, 0.5 part of ferrovanadium powder and 16.5 parts of reduced iron powder.
The wire diameter of the welding wire is phi 4.0mm, and the filling coefficient is 44.9 percent.
Wherein the carbon content of the micro-carbon ferrochrome powder is 0.06%, and the chromium content is 65 wt%; the content of carbon in the medium-carbon manganese iron powder is 1.5 wt%, and the content of manganese is 78 wt%; the content of silicon in the 45-silicon iron powder is 45 wt%, the content of molybdenum in the molybdenum iron powder is 55 wt%, and the content of vanadium in the vanadium iron powder is 50 wt%.
Hardness HV305 after double-layer surfacing
The welding wire of the embodiment is matched with a surfacing welding wire of a working layer of a 2Cr13 system continuous casting roller, the hardness of the welding wire of one layer of the priming coat and two layers of the working layer can reach HRC49.9 +/-0.7 after welding, the bonding strength of the welding layer is high, and the welding wire has no phenomena of peeling, large block peeling and the like after being used on line.
Example 5
The embodiment provides a zero section continuous casting roller of conticaster restores with bottoming layer submerged arc flux-cored wire, flux-cored wire includes low carbon cold rolling steel band and powder, according to parts by weight, the composition of powder includes: 27 parts of micro-carbon ferrochromium powder, 0.3 part of 45 ferrosilicon powder, 0.6 part of medium-carbon ferromanganese powder, 2.2 parts of ferromolybdenum powder, 1.7 parts of nickel powder, 0.5 part of ferrovanadium powder and 11.3 parts of reduced iron powder.
The wire diameter of the welding wire is phi 4.0mm, and the filling coefficient is 43.6 percent.
Wherein the carbon content of the micro-carbon ferrochrome powder is 0.06%, and the chromium content is 65 wt%; the content of carbon in the medium-carbon manganese iron powder is 1.5 wt%, and the content of manganese is 78 wt%; the content of silicon in the 45-silicon iron powder is 45 wt%, the content of molybdenum in the molybdenum iron powder is 55 wt%, and the content of vanadium in the vanadium iron powder is 50 wt%.
And after double layers are deposited, the hardness is HV 285.
The welding wire of the embodiment is matched with a surfacing welding wire of a working layer of a 2Cr13 system continuous casting roller, the hardness of the welding wire of one layer of the priming coat and two layers of the working layer can reach HRC49.2 +/-0.8 after welding, the bonding strength of the welding layer is high, and the welding wire has no phenomena of peeling, large block peeling and the like after being used on line.
Comparative example 1
The comparative example is the same as example 1 except that the nickel powder is replaced by the equal-mass micro-carbon ferrochrome powder.
Hardness HV289 after double-layer surfacing
The welding wire of the embodiment is matched with a surfacing welding wire of a working layer of a 1Cr13 system continuous casting roller, the hardness state of the roller surface after welding is good due to one layer of priming coat and two layers of working layer welding wires, but after online use, microcracks and delamination phenomena occur in the comparative welding wire and the working layer welding wire.
Comparative example 2
The comparative example was carried out under the same conditions as in example 1 except that the amount of 45 parts by mass of the ferrosilicon powder was changed to 0.2 parts by mass and the amount of the medium-carbon ferromanganese powder was changed to 1.6 parts by mass.
The manganese/silicon ratio added in the comparative example exceeds 10, the optimal ratio range of silicon-manganese combined deoxidation is broken, the welding quality is poor, the welding surface is uneven, and the surfacing layer lacks metallic luster.
Comparative example 3
The comparative example was carried out under the same conditions as in example 1 except that the amount of 45 parts by mass of the ferrosilicon powder was changed to 1.2 parts by mass and the amount of the medium-carbon ferromanganese powder was changed to 0.6 part by mass.
The manganese/silicon ratio added in the comparative example is less than 1, the optimal ratio range of silicon-manganese combined deoxidation is broken, the welding quality is poor, the welding surface is uneven, a surfacing layer lacks of metallic luster, a slag crust is not easy to fall off, and the slag is adhered to the inside of the surfacing layer.
Comparative example 4
The comparative example is the same as example 1 except that ferromolybdenum powder is replaced by equal-mass micro-carbon ferrochromium powder.
After the double layers are overlaid, the hardness HV256 is reduced, the hardness and the strength of the welding layer are reduced, and the wear resistance is reduced.
The applicant states that the present invention is illustrated by the above examples to show the detailed process equipment and process flow of the present invention, but the present invention is not limited to the above detailed process equipment and process flow, i.e. it does not mean that the present invention must rely on the above detailed process equipment and process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (14)
1. The bottom layer submerged arc flux-cored wire for repairing the zero-section continuous casting roller of the continuous casting machine is characterized by comprising a low-carbon cold-rolled steel strip and powder, wherein the powder comprises the following components in parts by weight: 21-27 parts of micro-carbon ferrochrome powder, 0-1 part of 45 ferrosilicon powder, 0.5-1.5 parts of medium-carbon ferromanganese powder, 1.5-2.5 parts of ferromolybdenum powder, 1.5-2.5 parts of nickel powder, 0-0.7 part of ferrovanadium powder and 10-15 parts of reduced iron powder;
the mass ratio of manganese element to silicon element in the flux-cored wire is 3-3.6: 1.
2. The flux-cored wire of claim 1, wherein the micro-carbon ferrochrome contains 0.01 to 0.10 wt% of carbon and 60 to 70 wt% of chromium.
3. The flux-cored wire of claim 2, wherein the micro-carbon ferrochrome has a carbon content of 0.06 wt% and a chromium content of 65 wt%.
4. The flux-cored wire of claim 1, wherein the carbon content of the medium-carbon ferromanganese powder is 1.0-2.0 wt%, and the manganese content is 75-80 wt%.
5. The flux-cored welding wire of claim 4, wherein the medium-carbon ferromanganese powder comprises 1.5 wt% carbon and 78 wt% manganese.
6. The flux-cored welding wire of claim 1, wherein the silicon content in the 45-silicon iron powder is 45 wt%.
7. The flux-cored wire of claim 1, wherein the content of molybdenum in the ferromolybdenum powder is 50-60 wt%.
8. The flux-cored welding wire of claim 7, wherein the ferromolybdenum wire has a molybdenum content of 55 wt%.
9. The flux-cored wire of claim 1, wherein the vanadium content in the ferrovanadium powder is 45-55 wt%.
10. The flux-cored wire of claim 9, wherein the ferrovanadium powder comprises vanadium in an amount of 50 wt%.
11. The flux-cored wire of claim 1, wherein the powder has a particle size of 60-200 mesh, and the particle size of 160-200 mesh is not more than 15%.
12. The flux-cored wire of claim 1, wherein a filling rate of the powder is 38-45%.
13. The flux-cored wire of claim 1, wherein the diameter Φ of the flux-cored wire is 2.8-4.0 mm.
14. The flux cored welding wire of claim 1, wherein the flux used in conjunction with the use of the flux cored welding wire comprises SJ201 and/or SJ 414.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010484330.8A CN111618472B (en) | 2020-06-01 | 2020-06-01 | Bottoming layer submerged arc flux-cored wire for repairing zero-section continuous casting roller of continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010484330.8A CN111618472B (en) | 2020-06-01 | 2020-06-01 | Bottoming layer submerged arc flux-cored wire for repairing zero-section continuous casting roller of continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111618472A CN111618472A (en) | 2020-09-04 |
| CN111618472B true CN111618472B (en) | 2022-02-18 |
Family
ID=72256272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010484330.8A Active CN111618472B (en) | 2020-06-01 | 2020-06-01 | Bottoming layer submerged arc flux-cored wire for repairing zero-section continuous casting roller of continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111618472B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE819608A (en) * | 1974-09-06 | 1974-12-31 | FURNISHED WIRES FOR ELECTROGAS WELDING. | |
| CN102029482B (en) * | 2010-11-19 | 2012-10-03 | 天津市永昌焊丝有限公司 | Gas-shielded overlaying flux cored soldering wire for repairing hot-forging mould |
| CN102744533B (en) * | 2012-07-05 | 2016-01-20 | 武汉宇宙科技有限公司 | A kind of pinch roll flux-cored wire |
| CN102744496B (en) * | 2012-07-05 | 2014-08-13 | 武汉宇宙科技有限公司 | Surface overlaying and processing method for pinch roller manufacturing and repairing |
| CN105345313B (en) * | 2015-12-23 | 2017-06-16 | 山东大学 | A kind of high-strength flux-cored wire for increasing fusion penetration and preparation method and application |
| CN107030413B (en) * | 2017-04-12 | 2019-04-12 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of flux-cored wire suitable for slab high-strength steel narrow-clearance submerged arc welding |
| CN108015447B (en) * | 2017-11-02 | 2019-12-03 | 中冶建筑研究总院有限公司 | Continuous Casting Rolls submerged arc overlay welding precipitation hardening type stainless flux-cored wire and preparation method thereof |
| CN110216399B (en) * | 2019-06-19 | 2021-08-03 | 鞍钢未来钢铁研究院有限公司 | Flux-cored wire for laminar flow roller arc spraying and preparation method |
| CN114571136A (en) * | 2019-12-17 | 2022-06-03 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
-
2020
- 2020-06-01 CN CN202010484330.8A patent/CN111618472B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111618472A (en) | 2020-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7383718B2 (en) | Method for manufacturing strong parts such as thin-walled steel welds with aluminum or aluminum alloy plating layer | |
| CA2550454C (en) | Hardfacing electrode | |
| CN101157169B (en) | Filling soldering flux wire for titania gas coverage arc welding | |
| CN101428376B (en) | High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire | |
| CN105057926A (en) | Special flux-cored wire for hot-working die repairing surfacing | |
| CN100467194C (en) | Abrasive surface electrode of efficient high-hardness | |
| CN102974956B (en) | Surfacing welding flux-cored wire | |
| CN101623799B (en) | Flux-cored wire for titanic oxide gas shielded arc welding | |
| CN111438463B (en) | Argon-filling-free priming welding rod for nickel-based alloy | |
| CN105081610B (en) | It is exclusively used in the metal powder core solder wire of hot-work die reparation | |
| CN100478116C (en) | Highly abrasion-proof columbium carbide-chromium carbide composite surfacing welding rod | |
| CN110883446A (en) | Flux-cored wire for roller repair and preparation method | |
| CN105081611A (en) | Special fine-diameter flux-cored wire for hot-working die repairing surfacing | |
| CN112975196B (en) | Flux-cored wire for efficient welding hot forging die surfacing transition layer | |
| CN111618472B (en) | Bottoming layer submerged arc flux-cored wire for repairing zero-section continuous casting roller of continuous casting machine | |
| JP4259887B2 (en) | Flux-cored wire for gas shielded arc welding for corrosion resistant steel | |
| CN114473288B (en) | Welding wire for low-dilution nickel-based surfacing layer and method for preparing CMT surfacing layer | |
| CN101837522B (en) | Vanadium-reinforced wear-resistant submerged-arc surfacing flux-cored welding wire | |
| CN109226995A (en) | A kind of self-shield flux-cored welding wire for overlaying welding | |
| CN112975198B (en) | Flux-cored wire for surfacing and priming of efficient welding hot forging die | |
| CN101412169B (en) | Explosive core of heat-resisting wear-resistant flux-cored wire | |
| KR100411477B1 (en) | Metal cored wire for welding of austenitic stainless steel | |
| CN102962604B (en) | Welding stick | |
| CN112276416A (en) | Flux-cored wire powder flux-cored wire, preparation method and application thereof, and ultrahigh-strength steel welding process | |
| CN110936054A (en) | Abrasion-resistant surfacing multi-strand stranded welding wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Qianshan Zhen Shan Yin Zi Cun, Qianshan District, Anshan City, Liaoning Province Patentee after: Anshan No.3 Steelmaking branch of Anshan Metallurgical Group Industry Co.,Ltd. Address before: 114041 No. 228, Qianshan East Road, Qianshan District, Anshan City, Liaoning Province Patentee before: Angang No.3 steel making and Repairing Plant |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230512 Address after: 114000 Chuangye Street, Tiexi District, Anshan City, Liaoning Province Patentee after: Anshan Metallurgical Group Steelmaking Service Co.,Ltd. Address before: Qianshan Zhen Shan Yin Zi Cun, Qianshan District, Anshan City, Liaoning Province Patentee before: Anshan No.3 Steelmaking branch of Anshan Metallurgical Group Industry Co.,Ltd. |