CN111347192A - Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll - Google Patents
Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll Download PDFInfo
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- CN111347192A CN111347192A CN201811561310.5A CN201811561310A CN111347192A CN 111347192 A CN111347192 A CN 111347192A CN 201811561310 A CN201811561310 A CN 201811561310A CN 111347192 A CN111347192 A CN 111347192A
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- cored wire
- flux
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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
- 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
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
A submerged arc flux-cored wire for surfacing of a transition layer for repairing a cold-rolled back-up roll relates to the technical field of welding materials, and particularly relates to a submerged arc flux-cored wire for surfacing of a transition layer for repairing a cold-rolled back-up roll. The low-carbon cold-rolled steel wire comprises a sheath and a flux core filled in the sheath, wherein the sheath is a low-carbon cold-rolled steel strip, and the flux core consists of the following raw materials in parts by weight: 15-30 parts of metal chromium powder, 2-8 parts of high-silicon ferrosilicon, 6-16 parts of electrolytic manganese powder, 8-15 parts of metal nickel powder, 5-12 parts of ferrovanadium, 2-6 parts of aluminum-magnesium alloy, 4-15 parts of sodium fluosilicate, 4-10 parts of ferromolybdenum and 20-35 parts of reduced iron powder. The invention has the beneficial effects that: the submerged arc flux-cored wire with high ductility and toughness and certain alloy content is used for repairing transition layers of various metallurgy roller base metals, the base metal components on the surface of a metallurgy roller are diluted, the ductility and toughness of a surfacing welding bonding layer is improved, cracks in the welding process are avoided, and the phenomena of stripping and chipping in the using process are greatly reduced. Greatly prolongs the service life of various metallurgical rolls.
Description
Technical Field
The invention relates to the technical field of welding materials, in particular to a transition layer surfacing submerged arc flux-cored wire for repairing a cold-rolled backup roll.
Background
Flux-cored wires, also known as flux-cored wires and tubular welding wires, are classified into two major categories, gas-shielded protection and non-gas-shielded protection. The surface of the flux-cored wire is made of low-carbon steel or low-alloy steel with better plasticity like a solid-core welding wire. The manufacturing method comprises rolling steel strip into U-shaped section, adding welding powder into the U-shaped steel strip, rolling with a rolling mill, and drawing to obtain flux-cored wires with different specifications.
When carrying out wearing parts build-up welding restoration such as all kinds of metallurgical rolls of steel rolling, because the base metal itself is mostly medium, high carbon alloy steel, the weldability is relatively poor, defects such as crackle appear easily in the welding process, and build-up welding layer thickness receives base metal alloy volume restriction greatly, and phenomena such as the use is easily appeared peeling off, falling the piece. The service life and the times of various wear-resistant parts such as metallurgical rolls are greatly reduced.
Disclosure of Invention
The invention aims to provide a transition layer surfacing submerged arc flux-cored wire for repairing a cold-rolled backup roll, which aims to overcome the defects and shortcomings of the prior art, avoids the occurrence of cracks in the welding process, reduces the phenomena of stripping and chipping in the use process, and prolongs the service life of various metallurgical rolls.
In order to achieve the purpose, the invention adopts the following technical scheme: the low-carbon cold-rolled steel wire comprises a sheath and a flux core filled in the sheath, wherein the sheath is a low-carbon cold-rolled steel strip, and the flux core consists of the following raw materials in parts by weight: 15-30 parts of metal chromium powder, 2-8 parts of high-silicon ferrosilicon, 6-16 parts of electrolytic manganese powder, 8-15 parts of metal nickel powder, 5-12 parts of ferrovanadium, 2-6 parts of aluminum-magnesium alloy, 4-15 parts of sodium fluosilicate, 4-10 parts of ferromolybdenum and 20-35 parts of reduced iron powder.
Further, the chromium content of the metal chromium powder is more than or equal to 99%, the silicon content of the high-silicon ferrosilicon is 70-75%, the manganese content of the electrolytic manganese powder is more than or equal to 99%, the nickel content of the metal nickel powder is more than or equal to 99%, the content of the sodium fluosilicate is more than or equal to 98%, and the iron content of the reduced iron powder is more than 98%.
Further, the low-carbon cold-rolled steel strip is 12-16mm in width and 0.40-0.80mm in thickness, and consists of the following raw materials in parts by weight: less than or equal to 0.06 part of carbon, 0.20 to 0.26 part of manganese, less than or equal to 0.10 part of silicon, less than or equal to 0.02 part of sulfur and less than or equal to 0.02 part of phosphorus.
Further, the flux-cored wire deposited metal is composed of the following raw materials in parts by weight: 0.04-0.06 part of carbon, 1.01-1.26 parts of manganese, 0.68-1.02 part of silicon, 0.005-0.010 part of sulfur, 0.011-0.014 part of phosphorus, 2.8-3.4 parts of chromium, 1-1.23 parts of nickel, 1.01-1.03 parts of molybdenum, 0.05-1.14 parts of vanadium and the balance of iron.
Preferably, the medicine core is composed of the following raw materials in parts by weight: 22 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 10 parts of electrolytic manganese powder, 10 parts of metal nickel powder, 8 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 10 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 22 parts of reduced iron powder.
Preferably, the medicine core is composed of the following raw materials in parts by weight: 26 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 8 parts of electrolytic manganese powder, 8 parts of metal nickel powder, 8 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 10 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 22 parts of reduced iron powder.
Preferably, the medicine core is composed of the following raw materials in parts by weight: 28 parts of metal chromium powder, 8 parts of high-silicon ferrosilicon, 13 parts of electrolytic manganese powder, 10 parts of metal nickel powder, 6 parts of ferrovanadium, 4 parts of aluminum-magnesium alloy, 8 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 23 parts of reduced iron powder.
Preferably, the medicine core is composed of the following raw materials in parts by weight: 24 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 12 parts of electrolytic manganese powder, 8 parts of metal nickel powder, 6 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 8 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 24 parts of reduced iron powder.
The use mechanism of the invention is as follows: in order to improve the performances of wear resistance, corrosion resistance and the like of the metallurgical roller, the metallurgical roller is mainly made of medium-carbon alloy steel and high-carbon alloy steel, some wear-resistant and corrosion-resistant alloy is added, the surface of the metallurgical roller is integrally cast, after the metallurgical roller is used for a certain time, the defects of fatigue cracks, block falling and the like can appear on the surface, surfacing repair is needed, the original size is recovered, a high-alloy system is also adopted for surfacing welding wires, the medium-carbon and high-carbon alloy system of a base material is adopted during surfacing, the carbon equivalent of the base material is high, the weldability of the base material is poor, particularly, when a first layer is surfaced, the influence of the carbon content of the base material on a surfacing layer. Because of the appearance of cracks, when rolled steel is stressed greatly, the phenomenon of block falling or integral peeling is easy to occur, so that the metallurgical roller surfacing welding is strictly prohibited from the appearance of cracks. And one or more layers of transition surfacing welding are carried out by adopting the submerged arc flux-cored wire with low carbon content and certain alloy content, so that the components of the base metal can be greatly diluted, the carbon content is reduced, the weldability is improved, the hardness requirement is not reduced, and the probability of cracks during roller surfacing welding is reduced. The impact resistance of the surfacing metal can be improved through component transition, and the anti-stripping and anti-stripping capabilities of the metallurgical roller in the using process are greatly improved.
After the technical scheme is adopted, the invention has the beneficial effects that: the electric arc is covered by the welding flux during welding, the process performance is good, and workers are better protected from arc light radiation; the carbon content of the parent metal is diluted, and the electric arc stability is good; welding flux protection is carried out, and the welding flux has high defect resistance such as air holes; the submerged arc flux-cored wire with high ductility and toughness and certain alloy content is adopted to repair transition layers of various metallurgy roller base metals, the base metal components on the surface of a metallurgy roller are diluted, the ductility and toughness of a surfacing welding bonding layer is improved, cracks in the welding process are avoided, and the phenomena of stripping and chipping in the using process are greatly reduced. Greatly prolongs the service life of various metallurgical rolls.
Detailed Description
The technical scheme adopted by the specific implementation mode is as follows:
example 1
22 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 10 parts of electrolytic manganese powder, 10 parts of metal nickel powder, 8 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 10 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 22 parts of reduced iron powder are respectively sieved by a 60-mesh sieve and then uniformly mixed, the mixture is put into a powder adding device of a flux-cored wire forming machine, the powder is uniformly added to a steel strip which is gradually rolled into a U shape, the steel strip is lapped and sealed by rolling, and the flux-cored wire is drawn into a flux-cored wire with the diameter of 3.2 mm by a wire drawing machine.
Example 2
The method comprises the following steps of taking 26 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 8 parts of electrolytic manganese powder, 8 parts of metal nickel powder, 8 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 10 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 22 parts of reduced iron powder according to parts by weight, respectively sieving the materials with a 60-mesh sieve, uniformly mixing the materials, putting the materials into a powder adding device of a flux-cored wire forming machine, uniformly adding medicinal powder into a steel strip which is gradually rolled into a U shape, rolling the steel strip to perform lap joint sealing, and drawing the welding wire into the flux-cored wire with the diameter of 3.2 mm by a.
Example 3
The method comprises the following steps of taking 28 parts of metal chromium powder, 8 parts of high-silicon ferrosilicon, 13 parts of electrolytic manganese powder, 10 parts of metal nickel powder, 6 parts of ferrovanadium, 4 parts of aluminum-magnesium alloy, 8 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 23 parts of reduced iron powder according to parts by weight, respectively sieving the materials by a 60-mesh sieve, uniformly mixing the materials, putting the materials into a powder adding device of a flux-cored wire forming machine, uniformly adding medicinal powder into a steel strip which is gradually rolled into a U shape, rolling the steel strip to perform lap joint sealing, and drawing the welding wire into the flux-cored wire with the diameter of 3.2 mm by a.
Example 4
The method comprises the following steps of taking 24 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 12 parts of electrolytic manganese powder, 8 parts of metal nickel powder, 6 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 8 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 24 parts of reduced iron powder according to parts by weight, respectively sieving the materials by a 60-mesh sieve, uniformly mixing the materials, putting the materials into a powder adding device of a flux-cored wire forming machine, uniformly adding medicinal powder into a steel strip which is gradually rolled into a U shape, rolling the steel strip to perform lap joint sealing, and drawing the welding wire into the flux-cored wire with the diameter of 3.2 mm by a.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A submerged arc flux-cored wire for surfacing welding of a transition layer for repairing a cold-rolled supporting roller is characterized in that: the low-carbon cold-rolled steel wire comprises a sheath and a flux core filled in the sheath, wherein the sheath is a low-carbon cold-rolled steel strip, and the flux core consists of the following raw materials in parts by weight: 15-30 parts of metal chromium powder, 2-8 parts of high-silicon ferrosilicon, 6-16 parts of electrolytic manganese powder, 8-15 parts of metal nickel powder, 5-12 parts of ferrovanadium, 2-6 parts of aluminum-magnesium alloy, 4-15 parts of sodium fluosilicate, 4-10 parts of ferromolybdenum and 20-35 parts of reduced iron powder.
2. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the chromium content of the metal chromium powder is more than or equal to 99 percent, the silicon content of the high-silicon ferrosilicon is 70-75 percent, the manganese content of the electrolytic manganese powder is more than or equal to 99 percent, the nickel content of the metal nickel powder is more than or equal to 99 percent, the content of the sodium fluosilicate is more than or equal to 98 percent, and the iron content of the reduced iron powder is more than 98 percent.
3. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the low-carbon cold-rolled steel strip is 12-16mm in width and 0.40-0.80mm in thickness and comprises the following raw materials in parts by weight: less than or equal to 0.06 part of carbon, 0.20 to 0.26 part of manganese, less than or equal to 0.10 part of silicon, less than or equal to 0.02 part of sulfur and less than or equal to 0.02 part of phosphorus.
4. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the flux-cored wire deposited metal is composed of the following raw materials in parts by weight: 0.04-0.06 part of carbon, 1.01-1.26 parts of manganese, 0.68-1.02 part of silicon, 0.005-0.010 part of sulfur, 0.011-0.014 part of phosphorus, 2.8-3.4 parts of chromium, 1-1.23 parts of nickel, 1.01-1.03 parts of molybdenum, 0.05-1.14 parts of vanadium and the balance of iron.
5. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the medicine core is composed of the following raw materials in parts by weight: 22 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 10 parts of electrolytic manganese powder, 10 parts of metal nickel powder, 8 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 10 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 22 parts of reduced iron powder.
6. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the medicine core is composed of the following raw materials in parts by weight: 26 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 8 parts of electrolytic manganese powder, 8 parts of metal nickel powder, 8 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 10 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 22 parts of reduced iron powder.
7. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the medicine core is composed of the following raw materials in parts by weight: 28 parts of metal chromium powder, 8 parts of high-silicon ferrosilicon, 13 parts of electrolytic manganese powder, 10 parts of metal nickel powder, 6 parts of ferrovanadium, 4 parts of aluminum-magnesium alloy, 8 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 23 parts of reduced iron powder.
8. The transition layer surfacing submerged arc flux-cored wire for repairing the cold-rolled supporting roller according to claim 1, which is characterized in that: the medicine core is composed of the following raw materials in parts by weight: 24 parts of metal chromium powder, 6 parts of high-silicon ferrosilicon, 12 parts of electrolytic manganese powder, 8 parts of metal nickel powder, 6 parts of ferrovanadium, 6 parts of aluminum-magnesium alloy, 8 parts of sodium fluosilicate, 6 parts of ferromolybdenum and 24 parts of reduced iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811561310.5A CN111347192A (en) | 2018-12-20 | 2018-12-20 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811561310.5A CN111347192A (en) | 2018-12-20 | 2018-12-20 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
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| Publication Number | Publication Date |
|---|---|
| CN111347192A true CN111347192A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811561310.5A Pending CN111347192A (en) | 2018-12-20 | 2018-12-20 | Transition layer surfacing submerged arc flux-cored wire for repairing cold-rolled backing roll |
Country Status (1)
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| CN (1) | CN111347192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115922143A (en) * | 2022-12-09 | 2023-04-07 | 山东聚力焊接材料有限公司 | Flux-cored wire for backing BD roller repair and preparation method thereof |
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| CN101407002A (en) * | 2008-11-28 | 2009-04-15 | 中国电力科学研究院 | Back slag self-protecting flux-cored wire for T92/P92 steel tungsten electrode argon arc backing weld |
| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN103862194A (en) * | 2014-03-20 | 2014-06-18 | 北京工业大学 | Surfacing flux-cored wire used for repairing hot-forging die |
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| CN105665959A (en) * | 2016-03-30 | 2016-06-15 | 北京工业大学 | Overlaying flux-cored wire for welding and repairing die-casting dies |
| CN107877035A (en) * | 2017-11-30 | 2018-04-06 | 桂林航天工业学院 | Stainless flux-cored wire and its production method |
| CN108994425A (en) * | 2018-07-16 | 2018-12-14 | 中冶建筑研究总院有限公司 | A kind of compound (again) manufactures Continuous Casting Rolls self-protection flux-cored wire and technique |
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| CN1814396A (en) * | 2005-02-06 | 2006-08-09 | 中国船舶重工集团公司第七二五研究所 | High-toughness verylow hydrogen basic Co2 Cored welding wire |
| CN101407002A (en) * | 2008-11-28 | 2009-04-15 | 中国电力科学研究院 | Back slag self-protecting flux-cored wire for T92/P92 steel tungsten electrode argon arc backing weld |
| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN103862194A (en) * | 2014-03-20 | 2014-06-18 | 北京工业大学 | Surfacing flux-cored wire used for repairing hot-forging die |
| CN104588907A (en) * | 2014-12-09 | 2015-05-06 | 天津大桥金属焊丝有限公司 | Stainless steel open arc flux-cored wire for transition layer overlaying |
| CN104646856A (en) * | 2015-01-12 | 2015-05-27 | 北京工业大学 | Build-up welding flux-cored wire for restoring forging die of press |
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| CN105665959A (en) * | 2016-03-30 | 2016-06-15 | 北京工业大学 | Overlaying flux-cored wire for welding and repairing die-casting dies |
| CN107877035A (en) * | 2017-11-30 | 2018-04-06 | 桂林航天工业学院 | Stainless flux-cored wire and its production method |
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| CN115922143A (en) * | 2022-12-09 | 2023-04-07 | 山东聚力焊接材料有限公司 | Flux-cored wire for backing BD roller repair and preparation method thereof |
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