CN107297583A - A kind of flux-cored wire of low-porosity good toughness - Google Patents
A kind of flux-cored wire of low-porosity good toughness Download PDFInfo
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- CN107297583A CN107297583A CN201710346732.XA CN201710346732A CN107297583A CN 107297583 A CN107297583 A CN 107297583A CN 201710346732 A CN201710346732 A CN 201710346732A CN 107297583 A CN107297583 A CN 107297583A
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- powder
- fluoride
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- flux
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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
- B23K35/22—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)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a kind of flux-cored wire of low-porosity good toughness, including mild-carbon steel strip crust and medicine core, wherein, the raw materials by weight of the medicine core includes：Graphite 0.4 0.6%, chromium powder 10 14%, manganese dioxide 2 4%, nickel powder 3.5 5.5%, niobium powder 3 5%, zirconium powder 2 4%, silica 0.4 0.6%, rheium oxide 9 10%, magnesium alloy 12 14%, fluoride 6 8%, lithium carbonate 1.5 4.5%, surplus is iron powder.The welding coating porosity of the present invention is low, and coating structure is fine and close, good toughness.
Description
Technical field
The present invention relates to welding wire technology field, more particularly to a kind of flux-cored wire of low-porosity good toughness.
Background technology
Metal parts is often being damaged using process, causes substantial amounts of waste, can be repaired by the method for built-up welding
Damaged part, recycles it, reduces the waste of metal parts.But tend to produce splashing in weld deposit process, make
Obtain in welding coating tissue and there are a large amount of stomatas, so as to reduce the toughness and crack resistance of welding coating.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of flux-cored wire of low-porosity good toughness,
The present invention is cooperated by each material so that the welding coating porosity of the invention is low, and coating structure is fine and close, good toughness.
A kind of flux-cored wire of low-porosity good toughness proposed by the present invention, including mild-carbon steel strip crust and medicine core, wherein,
The raw materials by weight of the medicine core includes：Graphite 0.4-0.6%, chromium powder 10-14%, manganese dioxide 2-4%, nickel powder
3.5-5.5%, niobium powder 3-5%, zirconium powder 2-4%, silica 0.4-0.6%, rheium oxide 9-10%, magnesium alloy 12-14%,
Fluoride 6-8%, lithium carbonate 1.5-4.5%, surplus is iron powder.
Preferably, fluoride is lithium fluoride and calcirm-fluoride.
Preferably, the weight ratio of lithium fluoride and calcirm-fluoride is 2-4：1.
Preferably, the raw material of medicine core must be preprocessed, and the step of it is pre-processed is：Each raw material of medicine core is mixed, granulation,
Through 800-900 DEG C of sintering 20-40min, 100-200 mesh is crushed to.
Preferably, in the medicine core raw material, magnesium alloy, fluoride, the percentage by weight of lithium carbonate meet following relation
Formula：MLithium carbonate≤(MMagnesium alloy-MFluoride)/2, wherein, MLithium carbonateRepresent the percentage by weight of lithium carbonate, MMagnesium alloyRepresent the weight of magnesium alloy
Measure percentage, MFluorideRepresent the percentage by weight of fluoride.
Preferably, in the medicine core raw material, niobium powder, zirconium powder, the percentage by weight of rheium oxide meet relationship below：MNiobium powder+
MZirconium powder+MRheium oxide>=15.2%, wherein, MNiobium powderRepresent the percentage by weight of niobium powder, MZirconium powderRepresent the percentage by weight of zirconium powder, MRheium oxideTable
Show the percentage by weight of rheium oxide.
Preferably, the loading of medicine core is the 44-48% of welding wire gross weight.
The flux-cored wire of low-porosity good toughness of the present invention is carried out according to the conventional flux-cored wire preparation technology in this area
Prepare, each raw material is put into mixer and is well mixed, crust mild-carbon steel strip, using flux-cored wire production equipment, through curling, is drawn
Pull out and obtain.
The present invention is by limiting " MLithium carbonate≤(MMagnesium alloy-MFluorideThe relational expression of)/2 ", regulation magnesium alloy, fluoride, carbonic acid
The proportioning of lithium, makes three cooperate, and gasifying in welding arc area to form a floor dynamic gas cage and cover on wire segment portion, with electric arc
Movement and it is mobile play a part of air-isolation, and reduce the surface tension of molten drop, promote molten drop refinement, so as to drop significantly
The porosity of low welding coating, increases the compactness of coating structure, so as to greatly increase the toughness of coating；And closed by magnalium
Gold and fluoride, limit lithium carbonate in appropriate level, make it while molten drop surface tension, air-isolation is reduced, it is to avoid weldering
Connect a large amount of carburetting of coating and avoiding excessive gas discharged in welding process and cause a large amount of splashings, and then substantially reduce the porosity,
Increase coating structure toughness；And lithium carbonate can also play a part of denitrogenation；From suitable fluoride, can further it drop
Low coating's air hole ratio, increases toughness；By limiting " MNiobium powder+MZirconium powder+MRheium oxide>=15.2% " relational expression, regulation niobium powder, zirconium powder, oxygen
Change the proportioning of rhenium, three cooperates, coating structure can be refined with crystal grain thinning, prevent Austenite Grain Growth, and can strengthen
Solid solution, forms new hardening constituent, so as to greatly increase the toughness of coating structure；, can be with and magnesium alloy, cerium oxide cooperate
Welding coating is purified, objectionable impurities in steel is substantially reduced, so as to further increase the toughness and intensity of the present invention；Nickel powder, niobium powder
Mutual cooperation can form small and dispersed phase, refine coating structure, increase toughness；Medicine core raw material is preprocessed, can make medicine core
Epigranular, good fluidity so that welding wire filling rate is stable；Above-mentioned each material cooperates so that welding coating of the invention
The porosity is low, and coating structure is fine and close, good toughness.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of flux-cored wire of low-porosity good toughness, including mild-carbon steel strip crust and medicine core, wherein, the original of the medicine core
Material includes by weight percentage：Graphite 0.5%, chromium powder 12%, manganese dioxide 3%, nickel powder 4.5%, niobium powder 4%, zirconium powder 3%,
Silica 0.5%, rheium oxide 9.5%, magnesium alloy 13%, fluoride 7%, lithium carbonate 3%, surplus is iron powder.
Embodiment 2
A kind of flux-cored wire of low-porosity good toughness, including mild-carbon steel strip crust and medicine core, wherein, the original of the medicine core
Material includes by weight percentage：Graphite 0.4%, chromium powder 14%, manganese dioxide 2%, nickel powder 5.5%, niobium powder 3%, zirconium powder 4%,
Silica 0.4%, rheium oxide 10%, magnesium alloy 12%, fluoride 8%, lithium carbonate 1.5%, surplus is iron powder；
Wherein, fluoride is lithium fluoride and calcirm-fluoride, wherein, the weight ratio of lithium fluoride and calcirm-fluoride is 4：1；
The raw material of medicine core must be preprocessed, and the step of it is pre-processed is：Each raw material of medicine core is mixed, granulation, through 800 DEG C
40min is sintered, 100 mesh are crushed to；
The loading of medicine core is the 48% of welding wire gross weight.
Embodiment 3
A kind of flux-cored wire of low-porosity good toughness, including mild-carbon steel strip crust and medicine core, wherein, the original of the medicine core
Material includes by weight percentage：Graphite 0.6%, chromium powder 10%, manganese dioxide 4%, nickel powder 3.5%, niobium powder 5%, zirconium powder 2%,
Silica 0.6%, rheium oxide 9%, magnesium alloy 14%, fluoride 6%, lithium carbonate 4%, surplus is iron powder；
Wherein, fluoride is lithium fluoride and calcirm-fluoride, wherein, the weight ratio of lithium fluoride and calcirm-fluoride is 2：1；
The raw material of medicine core must be preprocessed, and the step of it is pre-processed is：Each raw material of medicine core is mixed, granulation, through 900 DEG C
20min is sintered, 200 mesh are crushed to；
The loading of medicine core is the 44% of welding wire gross weight.
Embodiment 4
A kind of flux-cored wire of low-porosity good toughness, including mild-carbon steel strip crust and medicine core, wherein, the original of the medicine core
Material includes by weight percentage：Graphite 0.45%, chromium powder 13%, manganese dioxide 2.5%, nickel powder 5%, niobium powder 3.5%, zirconium powder
3.5%, silica 0.45%, rheium oxide 9.8%, magnesium alloy 12.5%, fluoride 7.5%, lithium carbonate 2.5%, surplus
For iron powder；
Wherein, fluoride is lithium fluoride and calcirm-fluoride, wherein, the weight ratio of lithium fluoride and calcirm-fluoride is 3.5：1；
The raw material of medicine core must be preprocessed, and the step of it is pre-processed is：Each raw material of medicine core is mixed, granulation, through 830 DEG C
35min is sintered, 130 mesh are crushed to；
The loading of medicine core is the 47% of welding wire gross weight.
Embodiment 5
A kind of flux-cored wire of low-porosity good toughness, including mild-carbon steel strip crust and medicine core, wherein, the original of the medicine core
Material includes by weight percentage：Graphite 0.55%, chromium powder 11%, manganese dioxide 3.5%, nickel powder 4%, niobium powder 4.5%, zirconium powder
2.5%, silica 0.55%, rheium oxide 9.2%, magnesium alloy 13.5%, fluoride 6.5%, lithium carbonate 3.5%, surplus
For iron powder；
Wherein, fluoride is lithium fluoride and calcirm-fluoride, wherein, the weight ratio of lithium fluoride and calcirm-fluoride is 2.5：1；
The raw material of medicine core must be preprocessed, and the step of it is pre-processed is：Each raw material of medicine core is mixed, granulation, through 870 DEG C
25min is sintered, 170 mesh are crushed to；
The loading of medicine core is the 45% of welding wire gross weight.
Example 1-5, carries out built-up welding to Q235 steel plates, obtains the coating of same thickness, and carries out performance test to it,
As a result it is as follows：
The welding coating good toughness that the present invention is formed as can be seen from the above table, the porosity is low.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of flux-cored wire of low-porosity good toughness, it is characterised in that including mild-carbon steel strip crust and medicine core, wherein, institute
Stating the raw materials by weight of medicine core includes：Graphite 0.4-0.6%, chromium powder 10-14%, manganese dioxide 2-4%, nickel powder 3.5-
5.5%, niobium powder 3-5%, zirconium powder 2-4%, silica 0.4-0.6%, rheium oxide 9-10%, magnesium alloy 12-14%, fluorination
Thing 6-8%, lithium carbonate 1.5-4.5%, surplus is iron powder.
2. the flux-cored wire of low-porosity good toughness according to claim 1, it is characterised in that fluoride is lithium fluoride and fluorine
Change calcium.
3. the flux-cored wire of low-porosity good toughness according to claim 2, it is characterised in that the weight of lithium fluoride and calcirm-fluoride
Amount is than being 2-4：1.
4. according to the flux-cored wire of any one of the claim 1-3 low-porosity good toughness, it is characterised in that the raw material of medicine core
Must be preprocessed, the step of it is pre-processed is：Each raw material of medicine core is mixed, granulation, through 800-900 DEG C of sintering 20-40min,
It is crushed to 100-200 mesh.
5. according to the flux-cored wire of any one of the claim 1-4 low-porosity good toughness, it is characterised in that the medicine core is former
In material, magnesium alloy, fluoride, the percentage by weight of lithium carbonate meet relationship below：MLithium carbonate≤(MMagnesium alloy-MFluoride)/2, its
In, MLithium carbonateRepresent the percentage by weight of lithium carbonate, MMagnesium alloyRepresent the percentage by weight of magnesium alloy, MFluorideRepresent fluoride
Percentage by weight.
6. according to the flux-cored wire of any one of the claim 1-5 low-porosity good toughness, it is characterised in that the medicine core is former
In material, niobium powder, zirconium powder, the percentage by weight of rheium oxide meet relationship below：MNiobium powder+MZirconium powder+MRheium oxide>=15.2%, wherein, MNiobium powder
Represent the percentage by weight of niobium powder, MZirconium powderRepresent the percentage by weight of zirconium powder, MRheium oxideRepresent the percentage by weight of rheium oxide.
7. according to the flux-cored wire of any one of the claim 1-6 low-porosity good toughness, it is characterised in that the filling of medicine core
Measure as the 44-48% of welding wire gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346732.XA CN107297583A (en) | 2017-05-17 | 2017-05-17 | A kind of flux-cored wire of low-porosity good toughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346732.XA CN107297583A (en) | 2017-05-17 | 2017-05-17 | A kind of flux-cored wire of low-porosity good toughness |
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| Publication Number | Publication Date |
|---|---|
| CN107297583A true CN107297583A (en) | 2017-10-27 |
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ID=60137439
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710346732.XA Withdrawn CN107297583A (en) | 2017-05-17 | 2017-05-17 | A kind of flux-cored wire of low-porosity good toughness |
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| Country | Link |
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| CN (1) | CN107297583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111203674A (en) * | 2020-01-13 | 2020-05-29 | 武汉铁锚焊接材料股份有限公司 | Metal powder flux-cored wire suitable for high-speed welding of medium plate without groove |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279409A (en) * | 2007-04-05 | 2008-10-08 | 天津市三英焊业有限责任公司 | Self-protecting flux-cored wire containing polyvinylidene resin |
| CN102785041A (en) * | 2011-05-17 | 2012-11-21 | 天津雷公焊接材料有限公司 | All-position flux-cored wire for alkaline gas protection |
| CN105364337A (en) * | 2014-08-28 | 2016-03-02 | 上海博腾焊接材料有限公司 | Flux-cored wire for build up welding and preparation method of flux-cored wire |
| CN105473277A (en) * | 2013-07-12 | 2016-04-06 | 株式会社神户制钢所 | Flux-cored wire for build-up welding |
| JP2016147273A (en) * | 2015-02-10 | 2016-08-18 | 日鐵住金溶接工業株式会社 | FLUX-CORED WIRE FOR 9% Ni STEEL WELDING |
| CN106514045A (en) * | 2016-12-09 | 2017-03-22 | 天长市通联焊业有限公司 | Environment-friendly low-hydrogen flux-cored wire and preparation method thereof |
-
2017
- 2017-05-17 CN CN201710346732.XA patent/CN107297583A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279409A (en) * | 2007-04-05 | 2008-10-08 | 天津市三英焊业有限责任公司 | Self-protecting flux-cored wire containing polyvinylidene resin |
| CN102785041A (en) * | 2011-05-17 | 2012-11-21 | 天津雷公焊接材料有限公司 | All-position flux-cored wire for alkaline gas protection |
| CN105473277A (en) * | 2013-07-12 | 2016-04-06 | 株式会社神户制钢所 | Flux-cored wire for build-up welding |
| CN105364337A (en) * | 2014-08-28 | 2016-03-02 | 上海博腾焊接材料有限公司 | Flux-cored wire for build up welding and preparation method of flux-cored wire |
| JP2016147273A (en) * | 2015-02-10 | 2016-08-18 | 日鐵住金溶接工業株式会社 | FLUX-CORED WIRE FOR 9% Ni STEEL WELDING |
| CN106514045A (en) * | 2016-12-09 | 2017-03-22 | 天长市通联焊业有限公司 | Environment-friendly low-hydrogen flux-cored wire and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111203674A (en) * | 2020-01-13 | 2020-05-29 | 武汉铁锚焊接材料股份有限公司 | Metal powder flux-cored wire suitable for high-speed welding of medium plate without groove |
| CN111203674B (en) * | 2020-01-13 | 2021-12-28 | 武汉铁锚焊接材料股份有限公司 | Metal powder flux-cored wire suitable for high-speed welding of medium plate without groove |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171027 |
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| WW01 | Invention patent application withdrawn after publication |