CN107127478B - Flux-cored wire - Google Patents
Flux-cored wire Download PDFInfo
- Publication number
- CN107127478B CN107127478B CN201710346765.4A CN201710346765A CN107127478B CN 107127478 B CN107127478 B CN 107127478B CN 201710346765 A CN201710346765 A CN 201710346765A CN 107127478 B CN107127478 B CN 107127478B
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- Prior art keywords
- powder
- flux
- cored wire
- oxidant
- reducing agent
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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
- B23K35/22—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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a flux-cored wire, which comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1-2% of graphite, 15-17% of chromium powder, 1-2% of manganese powder, 4-6% of nickel powder, 4-6% of niobium powder, 1-3% of vanadium powder, 1-1.5% of titanium dioxide, 0.5-1% of silicon dioxide, 4-5% of rhenium oxide, 4-5% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance being iron powder. According to the invention, through the mutual matching of all the substances, the problem of welding spatter can be greatly reduced, so that the porosity of the welding coating is low, the coating structure is compact, the toughness is good, and the strength is high.
Description
Technical Field
The invention relates to the technical field of welding wires, in particular to a flux-cored wire.
Background
The flux-cored welding wire is used for surfacing and repairing the damaged metal part, the damaged metal part can be recycled, the waste of the part is reduced, and splashing is easily generated in the surfacing process, so that air holes exist in a welding coating, and the coating is easy to crack.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the flux-cored wire, and the problem of welding spatter can be greatly reduced by matching various substances, so that the porosity of a welding coating is low, the coating structure is compact, the toughness is good, and the strength is high.
The invention provides a flux-cored wire, which comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1-2% of graphite, 15-17% of chromium powder, 1-2% of manganese powder, 4-6% of nickel powder, 4-6% of niobium powder, 1-3% of vanadium powder, 1-1.5% of titanium dioxide, 0.5-1% of silicon dioxide, 4-5% of rhenium oxide, 4-5% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance of iron powder; wherein, the weight ratio of the cerium oxide to the slag former to the oxidant to the reducing agent is 4-5: 6-7: 13-15: 2-4.
Preferably, the slagging agent is calcium fluoride and sodium fluorozirconate.
Preferably, the weight ratio of the calcium fluoride to the sodium fluorozirconate is 7-8: 1.
preferably, the reducing agent is magnesite.
Preferably, the oxidizing agent is lithium carbonate and ferric oxide.
Preferably, the weight ratio of the lithium carbonate to the ferric oxide is 4-6: 1.
the flux-cored wire is prepared according to the conventional flux-cored wire preparation process in the field, the raw materials are put into a stirrer to be uniformly mixed, the outer skin of the flux-cored wire is made of low-carbon steel strips, and flux-cored wire production equipment is adopted to be curled and drawn to obtain the flux-cored wire.
The calcium fluoride and the sodium fluorozirconate are matched with each other, and are gasified in a welding arc area to form a dynamic gas hood which is covered on the welding wire section part and moves along with the movement of an arc to play a role in isolating air, the surface tension of molten drops can be reduced, the refinement of the molten drops is promoted, and therefore the porosity of a welding coating is greatly reduced; on one hand, the magnesia can isolate air and reduce the surface tension of molten drops, and on the other hand, the magnesia can control the oxygen content in the final welding coating through earlier deoxidation, molten drop and precipitation deoxidation at a molten pool stage and reduce the brittleness of the coating; the lithium carbonate and the ferric oxide are matched with each other, so that on one hand, gas can be released by heat, and the electric arc blowing force is improved, so that the problem of insufficient fusion depth caused by excessive deoxidation of the magnesia is avoided, and the fusion depth is increased; on the other hand, the surface tension of the molten drop can be reduced, the refinement of the molten drop is promoted, the transition of the molten drop is more stable, and the nitrogen fixation effect can be achieved; the slag former, the oxidant and the reductant are matched with each other in a proper proportion, so that welding spatter can be greatly reduced, the porosity is reduced, and the brittleness of a coating is reduced; graphite and chromium powder can form carbide and grow perpendicular to the surface of the substrate, so that the strength of the coating and the bonding strength of the coating and the substrate are increased; manganese powder, nickel powder, niobium powder, vanadium powder, titanium dioxide, silicon dioxide, rhenium oxide and cerium oxide are matched with each other to form a fine dispersed phase and a new solid solution strengthening phase, so that the welded coating is fine and uniform in structure, and the strength and toughness of the coating are greatly improved; moreover, the magnesite, the rhenium oxide and the cerium oxide are matched with each other, so that a welding coating can be purified, and harmful impurities in steel are greatly reduced, thereby further improving the toughness and the strength of the invention; the substances are matched with each other, so that the problem of welding spatter can be greatly reduced, and the welding coating has low porosity, compact coating structure, good toughness and high strength.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
The flux-cored wire comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1.5% of graphite, 16% of chromium powder, 1.5% of manganese powder, 5% of nickel powder, 5% of niobium powder, 2% of vanadium powder, 1.2% of titanium dioxide, 0.7% of silicon dioxide, 4.5% of rhenium oxide, 4.5% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance being iron powder.
Example 2
The flux-cored wire comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1% of graphite, 17% of chromium powder, 1% of manganese powder, 6% of nickel powder, 4% of niobium powder, 3% of vanadium powder, 1% of titanium dioxide, 1% of silicon dioxide, 4% of rhenium oxide, 5% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance of iron powder;
wherein, the weight ratio of the cerium oxide to the slag former to the oxidant to the reducing agent is 5: 6: 15: 2;
the slagging agent is calcium fluoride and sodium fluorozirconate, wherein the weight ratio of the calcium fluoride to the sodium fluorozirconate is 8: 1;
the reducing agent is magnesia;
the oxidant is lithium carbonate and ferric oxide; the weight ratio of the lithium carbonate to the ferric oxide is 6: 1.
example 3
The flux-cored wire comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 2% of graphite, 15% of chromium powder, 2% of manganese powder, 4% of nickel powder, 6% of niobium powder, 1% of vanadium powder, 1.5% of titanium dioxide, 0.5% of silicon dioxide, 5% of rhenium oxide, 4% of cerium oxide, a slagging agent, an oxidant and a reducer, and the balance of iron powder;
wherein, the weight ratio of the cerium oxide to the slag former to the oxidant to the reducing agent is 4: 7: 13: 4;
the slagging agent is calcium fluoride and sodium fluorozirconate, wherein the weight ratio of the calcium fluoride to the sodium fluorozirconate is 7: 1;
the reducing agent is magnesia;
the oxidant is lithium carbonate and ferric oxide; the weight ratio of the lithium carbonate to the ferric oxide is 4: 1.
example 4
The flux-cored wire comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1.2% of graphite, 16.5% of chromium powder, 1.3% of manganese powder, 5.5% of nickel powder, 4.5% of niobium powder, 2.5% of vanadium powder, 1.1% of titanium dioxide, 0.8% of silicon dioxide, 4.3% of rhenium oxide, 4.7% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance of iron powder;
wherein, the weight ratio of the cerium oxide to the slag former to the oxidant to the reducing agent is 4.7: 6.2: 14.5: 2.5;
the slagging agent is calcium fluoride and sodium fluorozirconate, wherein the weight ratio of the calcium fluoride to the sodium fluorozirconate is 7.8: 1;
the reducing agent is magnesia;
the oxidant is lithium carbonate and ferric oxide; the weight ratio of the lithium carbonate to the ferric oxide is 5.5: 1.
example 5
The flux-cored wire comprises a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1.8% of graphite, 15.5% of chromium powder, 1.7% of manganese powder, 4.5% of nickel powder, 5.5% of niobium powder, 1.5% of vanadium powder, 1.3% of titanium dioxide, 0.6% of silicon dioxide, 4.7% of rhenium oxide, 4.3% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance of iron powder;
wherein, the weight ratio of the cerium oxide to the slag former to the oxidant to the reducing agent is 4.3: 6.8: 13.5: 3.5;
the slagging agent is calcium fluoride and sodium fluorozirconate, wherein the weight ratio of the calcium fluoride to the sodium fluorozirconate is 7.2: 1;
the reducing agent is magnesia;
the oxidant is lithium carbonate and ferric oxide; the weight ratio of the lithium carbonate to the ferric oxide is 4.5: 1.
taking examples 1-5, carrying out surfacing welding on a Q235 steel plate to obtain a coating with the same thickness, and carrying out performance test on the coating, wherein the results are as follows:
the table shows that the invention has little splashing during welding and the formed welding coating has good toughness.
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 (3)
1. The flux-cored wire is characterized by comprising a low-carbon steel belt sheath and a flux core, wherein the flux core comprises the following raw materials in percentage by weight: 1-2% of graphite, 15-17% of chromium powder, 1-2% of manganese powder, 4-6% of nickel powder, 4-6% of niobium powder, 1-3% of vanadium powder, 1-1.5% of titanium dioxide, 0.5-1% of silicon dioxide, 4-5% of rhenium oxide, 4-5% of cerium oxide, a slagging agent, an oxidant and a reducing agent, and the balance of iron powder;
wherein, the weight ratio of the cerium oxide to the slag former to the oxidant to the reducing agent is 4-5: 6-7: 13-15: 2-4;
wherein, the slagging agent is calcium fluoride and sodium fluorozirconate; the reducing agent is magnesia; the oxidant is lithium carbonate and ferric oxide.
2. The flux-cored wire of claim 1, wherein the weight ratio of calcium fluoride to sodium fluorozirconate is 7-8: 1.
3. the flux-cored wire of claim 1, wherein the weight ratio of lithium carbonate to ferric oxide is 4-6: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346765.4A CN107127478B (en) | 2017-05-17 | 2017-05-17 | Flux-cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346765.4A CN107127478B (en) | 2017-05-17 | 2017-05-17 | Flux-cored wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107127478A CN107127478A (en) | 2017-09-05 |
| CN107127478B true CN107127478B (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710346765.4A Active CN107127478B (en) | 2017-05-17 | 2017-05-17 | Flux-cored wire |
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| Country | Link |
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| CN (1) | CN107127478B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570910A (en) * | 2017-10-18 | 2018-01-12 | 柳州凯通新材料科技有限公司 | A kind of highly wear-resisting alloy steel welding wire medicine core |
| CN110026708B (en) * | 2019-05-16 | 2021-06-11 | 江苏师范大学 | Welding method of dual-phase steel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060144836A1 (en) * | 2005-01-03 | 2006-07-06 | Lincoln Global, Inc. | Cored electrode for reducing diffusible hydrogen |
| US7829820B2 (en) * | 2005-04-05 | 2010-11-09 | Lincoln Global, Inc. | Flux cored electrode with fluorine |
| CN104551437B (en) * | 2014-11-13 | 2016-08-17 | 上海施威重工成套有限公司 | A kind of submerged-arc welding tubulose medicated core vermicelli production technique |
| CN106141485A (en) * | 2016-07-29 | 2016-11-23 | 安徽飞狐焊业股份有限公司 | A kind of high-performance flux-cored wire |
| CN106112311B (en) * | 2016-08-05 | 2019-05-21 | 天长市通联焊业有限公司 | A kind of flux-cored wire with excellent toughness |
| CN106514047A (en) * | 2016-12-09 | 2017-03-22 | 天长市通联焊业有限公司 | Wear-resistant flux-cored wire for stainless steel |
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- 2017-05-17 CN CN201710346765.4A patent/CN107127478B/en active Active
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| CN107127478A (en) | 2017-09-05 |
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