CN111112876A - Flux-cored wire - Google Patents
Flux-cored wire Download PDFInfo
- Publication number
- CN111112876A CN111112876A CN201911191538.4A CN201911191538A CN111112876A CN 111112876 A CN111112876 A CN 111112876A CN 201911191538 A CN201911191538 A CN 201911191538A CN 111112876 A CN111112876 A CN 111112876A
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- CN
- China
- Prior art keywords
- flux
- percent
- welding
- 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.)
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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
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
Abstract
The invention discloses a flux-cored wire, and belongs to the technical field of flux-cored wires. The flux-cored wire comprises a sheath and a flux core filled in the sheath, wherein the flux core comprises the following components in percentage by weight: 4.5 to 6.5 percent of chromium, 1.2 to 1.8 percent of molybdenum, 0.8 to 1.0 percent of nickel, 3.5 to 4.5 percent of niobium, 1.5 to 2.0 percent of manganese, 0.5 to 0.8 percent of titanium, 1.5 to 2.0 percent of silicon, and the balance of iron and inevitable impurities. The flux-cored wire provided by the invention has the advantages of wide application range, heat resistance, wear resistance, high hardness and good impact resistance, and can meet the requirements of wear-resistant wire materials in actual production.
Description
Technical Field
The invention belongs to the technical field of flux-cored wires, and particularly relates to a flux-cored wire.
Background
The method utilizes a wear-resistant, heat-resistant and impact-resistant surfacing material, matches with a proper submerged arc welding agent, and utilizes a submerged arc surfacing process to repair various decommissioned metallurgical rollers, is a process which is very wide in the world roller repair application at present, and belongs to the field of green remanufacturing. Especially, the steel rolling cost is greatly reduced by applying the repair of the section steel hole type roller, and a large amount of noble metals such as chromium, molybdenum, vanadium and the like are saved.
In the repairing and remanufacturing process, the applicability of a surfacing welding material is crucial, the service life of a repaired roller is determined, the conventional repairing is generally performed by using welding materials such as 3Cr13, 6Cr13, 25Cr3Mo2MnVA or 30CrMnSi, the rolling amount of the repaired roller can be increased by 30-60% compared with that of a base material, but the repaired roller cannot meet the production requirement, particularly when low-temperature steel or alloy steel with special requirements is rolled, the rolling material has higher hardness and higher requirements on a rolling groove, and the welding materials cannot meet the production requirement.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a surfacing welding material which is wear-resistant, heat-resistant, impact-resistant and wide in applicability so as to meet the production requirement.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the flux-cored wire comprises a sheath and a flux core filled in the sheath, wherein the flux core comprises the following components in percentage by weight: 4.5 to 6.5 percent of chromium, 1.2 to 1.8 percent of molybdenum, 0.8 to 1.0 percent of nickel, 3.5 to 4.5 percent of niobium, 1.5 to 2.0 percent of manganese, 0.5 to 0.8 percent of titanium, 1.5 to 2.0 percent of silicon, and the balance of iron and inevitable impurities.
The technical scheme of the invention is further improved as follows: the sheath of the flux-cored wire is carbon steel.
The technical scheme of the invention is further improved as follows: the flux core of the flux-cored wire is alloy powder.
The technical scheme of the invention is further improved as follows: the diameter of the flux-cored wire is 3.6-4.0 mm.
The technical scheme of the invention is further improved as follows: the welding method of the flux-cored wire adopts a submerged arc surfacing process, and is matched with HJ107 flux, the welding voltage is 30-34V, the welding current is 280-350A, and the welding speed is 500-650 min/min.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the flux-cored wire provided by the invention has the advantages that the sheath made of carbon steel has good plasticity and is moisture-proof, the processing hardening can be avoided, the wire clamping and breaking of the welding wire during welding can be avoided, the process performance and the mechanical property are good, and the welding line has stronger corrosion resistance than the base metal. The flux-cored welding wire has the advantages of good flux-cored welding quality, no slag, high efficiency and convenient adjustment of alloy components, has the advantages of low welding hardness (less than HRC45), good machining performance, high aging hardness (more than HRC55), good wear resistance and the like, solves the problem of difficult rolling of certain high-alloy solid-core welding wires, overcomes the contradiction of high hardness, poor machining performance or low hardness, good machining performance and poor wear resistance of the existing surfacing materials, can overcome the softening phenomenon between welding beads, ensures that the surfacing surface hardness is more uniform, and has important significance for surfacing of finishing rolls.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
the flux-cored wire comprises a sheath and a flux core filled in the sheath, wherein the flux core comprises the following components in percentage by weight: 4.5 to 6.5 percent of chromium, 1.2 to 1.8 percent of molybdenum, 0.8 to 1.0 percent of nickel, 3.5 to 4.5 percent of niobium, 1.5 to 2.0 percent of manganese, 0.5 to 0.8 percent of titanium, 1.5 to 2.0 percent of silicon, and the balance of iron and inevitable impurities.
In the embodiment provided by the invention, the sheath of the flux-cored wire is made of carbon steel, and the sheath made of carbon steel has good plasticity and moisture resistance, can avoid processing hardening, solves the problems of wire clamping and wire breaking during welding, and has good technological properties and mechanical properties.
Furthermore, the flux core of the flux-cored wire is alloy powder, the flux-cored wire has good welding quality, no slag and high efficiency by using the alloy powder, and the alloy components can be conveniently adjusted, so that the flux-cored wire also has the advantages of low welding hardness (less than HRC45), good machining performance, high aging hardness (more than HRC55), good wear resistance and the like, and the problem of difficult rolling of certain high-alloy solid-core welding wires is solved.
Further, the diameter of the flux-cored wire is 3.6-4.0 mm.
Specifically, in the embodiment provided by the invention, the invention also discloses a welding method using the flux-cored wire, a submerged arc surfacing process is adopted, a HJ107 welding flux is matched, the voltage is 30-34V, the current is 280-350A, and the welding speed is 500-650 min/min, so that the aging-state hardness of the welding spot reaches HRC 58-64; the steel passing amount of the grooved roller repaired by applying the process and the flux-cored wire bead welding provided by the invention reaches more than 2 times of that of parent metals of 65CrNiMo and 60 CrNiMo.
The flux-cored wire provided by the invention has the advantages that the sheath made of carbon steel has good plasticity and is moisture-proof, the processing hardening can be avoided, the wire clamping and breaking of the welding wire during welding can be avoided, the process performance and the mechanical property are good, and the welding line has stronger corrosion resistance than the base metal. The flux-cored welding wire has the advantages of good welding quality, no slag, high efficiency and convenient adjustment of alloy components, has the advantages of low welding hardness, good machining performance, high aging hardness, good wear resistance and the like, solves the problem of difficult rolling of certain high-alloy solid-cored welding wires, overcomes the contradiction of high hardness, poor machining performance or low hardness, good machining performance and poor wear resistance of the existing surfacing welding materials, can overcome the softening phenomenon among welding beads, and ensures that the surfacing welding surface has more uniform hardness.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (5)
1. A flux-cored wire, characterized by: comprises a skin and a medicine core filled in the skin; the flux core comprises the following components in percentage by weight: 4.5 to 6.5 percent of chromium, 1.2 to 1.8 percent of molybdenum, 0.8 to 1.0 percent of nickel, 3.5 to 4.5 percent of niobium, 1.5 to 2.0 percent of manganese, 0.5 to 0.8 percent of titanium, 1.5 to 2.0 percent of silicon, and the balance of iron and inevitable impurities.
2. The flux cored welding wire of claim 1, wherein: the sheath of the flux-cored wire is carbon steel.
3. The flux cored welding wire of claim 1, wherein: the flux core of the flux-cored wire is alloy powder.
4. The flux cored welding wire of claim 1, wherein: the diameter of the flux-cored wire is 3.6-4.0 mm.
5. The flux cored welding wire of claim 1, wherein: the welding method of the flux-cored wire adopts a submerged arc surfacing process, and is matched with HJ107 flux, the welding voltage is 30-34V, the welding current is 280-350A, and the welding speed is 500-650 mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191538.4A CN111112876B (en) | 2019-11-28 | 2019-11-28 | Flux-cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191538.4A CN111112876B (en) | 2019-11-28 | 2019-11-28 | Flux-cored wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111112876A true CN111112876A (en) | 2020-05-08 |
| CN111112876B CN111112876B (en) | 2021-10-12 |
Family
ID=70496928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911191538.4A Active CN111112876B (en) | 2019-11-28 | 2019-11-28 | Flux-cored wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111112876B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182731A (en) * | 2021-05-08 | 2021-07-30 | 广西辉煌耐磨技术股份有限公司 | High-performance hard-face surfacing flux-cored wire |
| US20220281037A1 (en) * | 2019-11-26 | 2022-09-08 | Esab Seah Corp. | Stainless steel flux cored wire for manufacturing lng tank |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739907A (en) * | 2005-09-15 | 2006-03-01 | 姜春 | High hardness submerged arc welding wire |
| CN101062533A (en) * | 2006-04-28 | 2007-10-31 | 北京中煤大田耐磨材料有限公司 | Abrasion-proof pile-up welding flux-cored wire for roll squeezer |
| CN101406999A (en) * | 2007-10-10 | 2009-04-15 | 中冶集团建筑研究总院 | Flux-cored wire for welding rotary cutter edge and method thereof |
| JP2009248175A (en) * | 2008-04-10 | 2009-10-29 | Nippon Steel Corp | Tig welding method of high-strength steel using flux-containing wire |
| CN101722383A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled work roll by same |
| CN101722384A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled back-up roll by same |
| CN103612024A (en) * | 2013-11-18 | 2014-03-05 | 武汉铁锚焊接材料股份有限公司 | Submerged arc flux-cored wire for Cr13 series universal type build up welding, preparation for submerged arc flux-cored wire and application for submerged arc flux-cored wire |
| CN106624425A (en) * | 2016-12-13 | 2017-05-10 | 天长市通联焊业有限公司 | Attrition-resistant flux-cored wire for welding deposit repairing |
| CN109226994A (en) * | 2018-10-31 | 2019-01-18 | 首钢集团有限公司 | A kind of hard-face overlaying welding flux-cored wire |
-
2019
- 2019-11-28 CN CN201911191538.4A patent/CN111112876B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739907A (en) * | 2005-09-15 | 2006-03-01 | 姜春 | High hardness submerged arc welding wire |
| CN101062533A (en) * | 2006-04-28 | 2007-10-31 | 北京中煤大田耐磨材料有限公司 | Abrasion-proof pile-up welding flux-cored wire for roll squeezer |
| CN101406999A (en) * | 2007-10-10 | 2009-04-15 | 中冶集团建筑研究总院 | Flux-cored wire for welding rotary cutter edge and method thereof |
| JP2009248175A (en) * | 2008-04-10 | 2009-10-29 | Nippon Steel Corp | Tig welding method of high-strength steel using flux-containing wire |
| CN101722383A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled work roll by same |
| CN101722384A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled back-up roll by same |
| CN103612024A (en) * | 2013-11-18 | 2014-03-05 | 武汉铁锚焊接材料股份有限公司 | Submerged arc flux-cored wire for Cr13 series universal type build up welding, preparation for submerged arc flux-cored wire and application for submerged arc flux-cored wire |
| CN106624425A (en) * | 2016-12-13 | 2017-05-10 | 天长市通联焊业有限公司 | Attrition-resistant flux-cored wire for welding deposit repairing |
| CN109226994A (en) * | 2018-10-31 | 2019-01-18 | 首钢集团有限公司 | A kind of hard-face overlaying welding flux-cored wire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220281037A1 (en) * | 2019-11-26 | 2022-09-08 | Esab Seah Corp. | Stainless steel flux cored wire for manufacturing lng tank |
| CN113182731A (en) * | 2021-05-08 | 2021-07-30 | 广西辉煌耐磨技术股份有限公司 | High-performance hard-face surfacing flux-cored wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111112876B (en) | 2021-10-12 |
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