CN106141495B - A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof - Google Patents
A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof Download PDFInfo
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- CN106141495B CN106141495B CN201610605419.9A CN201610605419A CN106141495B CN 106141495 B CN106141495 B CN 106141495B CN 201610605419 A CN201610605419 A CN 201610605419A CN 106141495 B CN106141495 B CN 106141495B
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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
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
Abstract
The present invention discloses a kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof, including mild-carbon steel strip and medicine core, medicine core include the component of following mass percent：The high carbon ferro-chrome of 45~55wt%, the B of 6~16wt%4C, the TiB of 3~9wt%2, 3~9wt% ZrB2The graphite of 1~3wt%, the 60 mesh cellulose powders of 0.5~1wt%, the 200 mesh cellulose powders of 0.5~1wt%, the 60 mesh almags of 1~3wt%, the 200 mesh almags of 0.5~2wt%, the 60 mesh silicomangans of 2~7wt%, the 200 mesh silicomangans of 1~4wt%, surplus is iron powder, and the medicine core accounts for 50 54wt% of welding wire gross weight.Welding wire provided by the invention, by adding varigrained medicine core component, it ensure that good welding technological properties, and pass through the addition of polynary boride component, the polynary boride of disperse educt in the welding process has the features such as hardness is high and uniform, and wearability is good, and welding bead surface, substantially without slag, multilayer welding is not necessarily to scarfing cinder.
Description
Technical field
The invention belongs to the welding fields in Materials Processing Engineering, resistance to more particularly to a kind of polynary boride doping vario-property
Grind built-up welding self-protection flux-cored wire and preparation method thereof.
Background technology
The hardfacing flux-cored wire of Bead weld repair at present, generally relies on M7C3Based on chromium carbide silicon carbide object
Its hardness, M are provided7C3Microhardness is 1200-1700HV.Researchers are often through addition carbide Nb, Ti
Etc. further increasing its hardness.On the whole, wear-resistant skeleton function is played in hardfacing alloy tissue by carbide, to improve
The wearability of hardfacing alloy is the general choice of current welding material manufacturer.
Compared with Carbide Phases, boride often has higher hardness, superior resistance to theoretically be capable of providing
Grind performance, such as B4C is most hard one of the three kinds of materials of currently known nature, and microhardness reaches 3500HV or so,
TiB2Microhardness is 2800-3400HV, ZrB2Microhardness and TiB2It is close.However, in traditional welding process, B is added
The brittleness for being easy to cause deposited metal increases, and is primarily due in high-temperature fusant process of setting, B reacts generation with other elements
Dendritic boride is netted, such boride poor toughness easily cracks, limits its wearability significantly.
Invention content
Goal of the invention：Defect existing for flux-cored wire for the doping of boride in the prior art, the present invention provide a kind of
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing, it is a further object of the present invention to provide the systems of the flux-cored wire
Preparation Method.
Technical solution：To achieve the above object, the present invention uses following technical scheme：
The polynary boride doping vario-property self-protecting flux-cored wire for hardfacing of the present invention, including mild-carbon steel strip and medicine core,
For the flux cored filler in steel band, the medicine core includes the component of following mass percent：The high carbon ferro-chrome of 45~55wt%, 6
The B of~16wt%4C, the TiB of 3~9wt%2, 3~9wt% ZrB2, the graphite of 1~3wt%, the 60 mesh fibre of 0.5~1wt%
200 mesh cellulose powders of the plain powder of dimension, 0.5~1wt%, the 60 mesh almags of 1~3wt%, 200 mesh of 0.5~2wt%
Almag, the 60 mesh silicomangans of 2~7wt%, the 200 mesh silicomangans of 1~4wt%, surplus is iron powder, and the medicine core accounts for
The 50-54wt% of welding wire gross weight.
Further, the high carbon ferro-chrome, B4C、TiB2、ZrB2, graphite and iron powder the mesh number of grain size be all higher than or be equal to
80 mesh, i.e. high carbon ferro-chrome, B4C、TiB2、ZrB2, graphite and iron powder grain size be less than or equal to 0.18mm.
Further, phosphorus content is 9.0~9.5wt% in the high carbon ferro-chrome, and chrome content is 62~72wt%, remaining is
Iron；The almag aluminum content is 47~53wt%, remaining is magnesium；The silicomangan silicon content be 47~
53wt%, remaining is manganese.
Further, the cellulose of different-grain diameter：The cellulose powder of the cellulose of 60 mesh and 200 mesh, with mass ratio 1:1
The mode of combination is added.
Further, the almag of different-grain diameter：The almag of the almag of 60 mesh and 200 mesh, with mass ratio
1:0.7~2:The mode of 1 combination is added.
Further, the silicomangan of different-grain diameter：The silicomangan of the silicomangan of 60 mesh and 200 mesh, with mass ratio
7:4~2:The mode of 1 combination is added.
Further, the mild-carbon steel strip thickness × width is 0.5 × 21mm.
Further, any one in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of the welding wire.
Present invention further proposes the preparation methods of above-mentioned flux-cored wire, include the following steps：
(1) mild-carbon steel strip is rolled into U-shaped using molding roller, medicine core powder is then pressed by welding wire gross weight by dust feeder
50-54wt% be added in the U-lag of the mild-carbon steel strip；
(2) U-lag is healed up, makes medicine core package wherein, by wire drawing die, by road drawing, tube reducing, finally reaches its diameter
To 2.8~4.2mm, final products are obtained.
Each component act as in above-mentioned medicine core：
High carbon ferro-chrome：Form Cr7C3, Cr23C6, Cr3The carbide of the chromium such as C；And the transition alloy elements into matrix
Cr, and C element is provided.
B4C、TiB2And ZrB2：Dispersed precipitate provides ideal wear-resisting object phase in hardfacing alloy tissue；Refine heap simultaneously
Soldering payment organization.
Graphite：C element, deoxidation are provided, gas making (CO, C are oxidized to CO with oxygen reactive moieties and cause molten bath micro-boiling) reduces
Stomata sensitivity.
Cellulose：Deoxidation, gas making enhance self-shield effect.
Almag：For deoxidation, fixed nitrogen enhances self-shield effect.
Silicomangan：For deoxidation, wherein Si and Mn combined deoxidations, deoxidation effect more preferably, enhances self-shield effect；Simultaneously
Transition alloy elements Mn and elements Si are provided.
By the effect summary of each component in above-mentioned technical proposal and medicine core it is understood that the present invention due to simultaneously in medicine core
Add polynary high rigidity boride B4C、TiB2And ZrB2, it is precipitated in advance in weld physics metallurgical melt, and Dispersed precipitate.From
And tissue is made to be fined, and the formation that tradition nets dendritic boride is avoided, this can all increase deposited metal obdurability.And
And the B due to being first precipitated4C、TiB2And ZrB2Than (Cr, Fe)7C3Carbide has higher hardness and thermal stability, carries significantly
The hardness and wearability of high deposited metal.The expensive alloying elements such as niobium, vanadium are not added in the medicine core of the present invention, weldering is greatly saved
Silk manufacturing cost realizes a small amount of multielement enhanced original intention, has reached the purpose of the present invention.
In the above-mentioned technical solutions, the addition manner of the boride is multiplexed combination.This is because, on the one hand,
B4C、TiB2And ZrB2High rigidity, high heat stability performance be approximate convergent, this all greatly contributes to hardfacing alloy wearability；
On the other hand, B4C、TiB2And ZrB2The physical and chemical performances such as fusing point, form difference again, this not only improves hard particle and is welding
It connects the wider high-temperature temperature section successive of early solidification and is precipitated and strengthen thinning effect to constitute graded multicomponent, and be conducive to abundant hard
The ingredient of matter phase provides more stable excellent wear effectively to resist the grinding under especially complex working conditions.
There are two types of the granularity of cellulose, almag and silicomangan in medicine core of the present invention is equal：60 mesh and 200 mesh, with
The mode of particle size differences combination is added.In the whole welding process, the molten drop stage of existing extreme temperatures, and have temperature slightly lower
Molten bath stage, whichever are required for effectively avoiding air pollution just that qualified welding deposited metal can be obtained in stage, by preceding
Phase, a large amount of engineer testing was found, the self-shield effect of welding wire can be obviously improved by varigrained above-mentioned medicine core component,
This is because varigrained powder has different oxidation activities.The present invention controls chemical metallurgy reaction by component particle size and lives
The inventive concept of property, superfine 200 mesh celluloses, almag and silicomangan are added in medicine core, is being welded using it
Temperature rise period carries out effective precedent desoxydation, while adding 60 thicker mesh celluloses, almag and silicomanganese in medicine core and closing
Gold is retained in molten drop hot stage and molten bath stage using it, effective deoxidation gas making can be also carried out, to ensure entire
Welding wire is heated, fusing, formed molten drop, the droplet transfer, formed molten bath and start solidification Welding Metallurgy whole process be provided with it is good
Self-shield effect remains able to have good to realize this welding wire in the case of any mineral powder slag former of no addition
Good welding technological properties and welding metal shaping surface.
Advantageous effect：Compared with prior art, the present invention has the following advantages：
(1) present invention in medicine core by adding polynary boride B simultaneously4C、TiB2And ZrB2, during Welding Metallurgy
A large amount of disperse educts are precipitated in advance, provide high rigidity, high thermal stability and thinning microstructure, and by avoiding single multicomponent mixture
Addition manner efficiently uses B4C、TiB2And ZrB2The difference on physical and chemical performance such as fusing point, form, obtain high-temperature temperature section
Successive is precipitated strengthens thinning effect to constitute graded multicomponent, and the ingredient for being also beneficial to abundant hard phase is especially multiple effectively to resist
Grinding under the conditions of general labourer's condition provides more stable excellent wear.
(2) present invention controls the new approaches of chemical metallurgy reactivity by component particle size, is respectively combined and adds in medicine core
Add 200 superfine mesh and thicker 60 mesh celluloses, almag and silicomangan, is effectively ensured heated, molten in entire welding wire
Change, form molten drop, droplet transfer, form molten bath and the Welding Metallurgy whole process for starting to solidify is provided with good self-shield effect,
To realize this welding wire in the case of any mineral powder slag former of no addition, remain able to have good welding procedure
Performance and welding bead shaping surface.
(3) flux-cored wire welding procedure performance of the invention is good, and homogenization degree is high, and overlay surface hardness is equal
Even, average hardness is in 62~66HRC ranges.Wearability is 32~36 times of Q235.
(4) preparation method of flux-cored wire of the present invention is simple and reliable, is easy to produce in batches, prepared welding wire welding procedure
Functional, deposition efficiency is high, and multilayer welding is not necessarily to scarfing cinder.
Specific implementation mode
The present invention is further explained with reference to embodiment.Because of understanding, the described tool of following embodiments
The proportioning of body medicine core component, process conditions and as a result, in order to preferably explain the present invention, the present invention is protected without constituting
The restriction of range.Wherein, the high carbon ferro-chrome phosphorus content used in following examples is 9.0~9.5wt%, chrome content 62
~72wt%, remaining is iron；The almag aluminum content is 47~53wt%, remaining is magnesium；The silicomangan contains
Silicon amount is 47~53wt%, remaining is manganese.
Embodiment 1
A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing, including mild-carbon steel strip and medicine core, medicine core
It is filled in steel band, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 55g, the 80 mesh B of 6g4C, the 80 of 3g
Mesh TiB2, 9g 80 mesh ZrB2, the 80 mesh graphite of 1g, the 60 mesh cellulose powders of 0.5g, the 200 mesh cellulose powders of 0.5g, 1g
60 mesh almags, 0.5g 200 mesh almags, the 60 mesh silicomangans of 2g, the 200 mesh silicomangans of 1g, 20.5g's
80 mesh iron powders.Taken various powder merging is mixed in powder machines, mixes 40 minutes, then mixed-powder be added U-shaped 21 ×
In the H08A carbon steel steel band slots of 0.5mm, filling rate 50%.U-lag is healed up again, makes medicinal powder package wherein.Then make its point
Not by one or more in the wire drawing die of a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, subtract
Diameter finally obtains the product of a diameter of 2.8~4.2mm.Welding current is 260~400A, and weldingvoltage is 30~40V, welding
Speed is 0.4m/min, and interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 2
A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing, including mild-carbon steel strip and medicine core, medicine core
It is filled in steel band, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 45g, the 80 mesh B of 16g4C, the 80 of 9g
Mesh TiB2, 3g 80 mesh ZrB2, the 80 mesh graphite of 3g, the 60 mesh cellulose powders of 1g, the 200 mesh cellulose powders of 1g, the 60 of 3g
200 mesh almags of mesh almag, 2g, the 60 mesh silicomangans of 7g, the 200 mesh silicomangans of 4g, the 80 mesh iron powders of 6g.
Taken various powder mergings are mixed in powder machine, mixes 40 minutes, then mixed-powder is added the H08A of 21 × 0.5mm of U-shaped
In carbon steel steel band slot, filling rate 52%.U-lag is healed up again, makes medicinal powder package wherein.Then make it respectively by a diameter of
It is one or more in the wire drawing die of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, tube reducing, finally obtain straight
Diameter is the product of 2.8~4.2mm.Welding current is 260~400A, and weldingvoltage is 30~40V, speed of welding 0.4m/
Min, interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 3
A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing, including mild-carbon steel strip and medicine core, medicine core
It is filled in steel band, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 50g, the 80 mesh B of 10g4C, the 80 of 6g
Mesh TiB2, 5g 80 mesh ZrB2, the 80 mesh graphite of 2g, the 60 mesh cellulose powders of 0.8g, the 200 mesh cellulose powders of 0.8g, 2g
60 mesh almags, 1.4g 200 mesh almags, the 60 mesh silicomangans of 4g, the 200 mesh silicomangans of 2g, the 80 of 16g
Mesh iron powder.Taken various powder mergings are mixed in powder machine, mixes 40 minutes, then mixed-powder is added 21 × 0.5mm of U-shaped
H08A carbon steel steel band slots in, filling rate 54%.U-lag is healed up again, makes medicinal powder package wherein.Then it is made to pass through respectively
It is one or more in the wire drawing die of a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, tube reducing, finally
Obtain the product of a diameter of 2.8~4.2mm.Welding current is 260~400A, and weldingvoltage is 30~40V, and speed of welding is
0.4m/min, interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Deposited metal hardness and wearability are shown in Table 1.
Hardness test uses HR-150A Rockwell apparatuses, load 150Kg to take 5 point hardnesses to each test specimens in table 1,
Its average hardness value is calculated, wear test uses MLS-225 type wet type rubber foot wheel abrasion testers.
It is 57 × 25 × 6mm Wear specimens that the overlay cladding of each embodiment, which is cut five sizes,.Wear test parameter is as follows：
Rubber wheel diameter：178mm, rubber wheel speed：240 revs/min, rubber wheel hardness：70 (Shao Er hardness), load：10Kg, rubber wheel
Revolution：1000 turns of pre-grinding, formal test turn 1000 turns, abrasive material：The quartz sand of 40~70 mesh.The wear-resisting property of deposited metal is with just
The weight loss of formula abrasion is weighed.Test every time it is forward and backward sample merging is filled into the beaker of acetone soln, it is in ultrasonic wave clear
It washes in instrument and cleans 3~5 minutes, record of weighing after dry.Experiment Q235 steel sample as a comparison, contrast piece weight loss and measuring piece
Relative wear resistance ε of the ratio between the weight loss as built-up welding sample.
1 each embodiment deposited metal hardness and wear resistance of table
The present invention in medicine core by being added to polynary boride B4C、TiB2And ZrB2, in weld physics metallurgical melt
It is precipitated in advance, and Dispersed precipitate, to make tissue be fined, and avoids the formation that tradition nets dendritic boride, carry significantly
The hardness and wearability of high deposited metal increase deposited metal obdurability.In addition, it is anti-also to control chemical metallurgy by component particle size
Active new approaches are answered, is respectively combined in medicine core and adds 200 superfine mesh and thicker 60 mesh celluloses, almag and silicon
Manganese alloy, be effectively ensured entire welding wire it is heated, fusing, form molten drop, droplet transfer, the welding for forming molten bath and starting solidification
Metallurgical whole process is provided with good self-shield effect, to realize this welding wire in no feelings for adding any mineral powder slag former
Under condition, remain able to have good welding technological properties and welding bead shaping surface.The flux-cored wire welding procedure of the present invention
Can be good, homogenization degree is high, and overlay surface hardness is uniform, and average hardness is in 62~66HRC ranges.Wearability is Q235
32~36 times.
Above example is to play the role of illustrating example to the technical concept of the present invention, can not limit the present invention with this
Protection domain, those skilled in the art modify and are equal in the spirit and scope for not departing from technical solution of the present invention
It replaces, should all fall within the scope and spirit of the invention.
Claims (9)
1. a kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing, including mild-carbon steel strip and medicine core, the medicine
Core is filled in steel band, it is characterised in that：The medicine core includes the component of following mass percent：The high carbon chromium of 45~55wt%
Iron, the B of 6~16wt%4C, the TiB of 3~9wt%2, 3~9wt% ZrB2, the graphite of 1~3wt%, the 60 of 0.5~1wt%
200 mesh cellulose powders of mesh cellulose powder, 0.5~1wt%, the 60 mesh almags of 1~3wt%, 0.5~2wt%
200 mesh almags, the 60 mesh silicomangans of 2~7wt%, the 200 mesh silicomangans of 1~4wt%, surplus is iron powder, described
Medicine core accounts for the 50-54wt% of welding wire gross weight.
2. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
The high carbon ferro-chrome, B4C、TiB2、ZrB2, graphite and iron powder granularity mesh number be all higher than or be equal to 80 mesh.
3. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
Phosphorus content is 9.0~9.5wt% in the high carbon ferro-chrome, and chrome content is 62~72wt%, remaining is iron；The almag
Aluminum content is 47~53wt%, remaining is magnesium；The silicomangan silicon content is 47~53wt%, remaining is manganese.
4. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
The cellulose of different-grain diameter：The cellulose powder of the cellulose of 60 mesh and 200 mesh, with mass ratio 1:The mode of 1 combination is added.
5. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
The almag of different-grain diameter：The almag of the almag of 60 mesh and 200 mesh, with mass ratio 1:0.7~2:The side of 1 combination
Formula is added.
6. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
The silicomangan of different-grain diameter：The silicomangan of the silicomangan of 60 mesh and 200 mesh, with mass ratio 7:4~2:The mode of 1 combination
It is added.
7. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
Mild-carbon steel strip thickness × the width is 0.5 × 21mm.
8. polynary boride doping vario-property self-protecting flux-cored wire for hardfacing according to claim 1, it is characterised in that：
Any one in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of the welding wire.
9. a kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing such as claim 1-8 any one of them
Preparation method, it is characterised in that：Include the following steps：
(1) mild-carbon steel strip is rolled into U-shaped using molding roller, medicine core powder is then pressed by welding wire gross weight by dust feeder
50-54wt% is added in the U-lag of the mild-carbon steel strip；
(2) U-lag is healed up, makes medicine core package wherein, by wire drawing die, by road drawing, tube reducing, finally reaches its diameter
2.8~4.2mm obtains final products.
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| CN201610605419.9A CN106141495B (en) | 2016-07-28 | 2016-07-28 | A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof |
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| CN201610605419.9A CN106141495B (en) | 2016-07-28 | 2016-07-28 | A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof |
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| CN106624426B (en) * | 2016-11-29 | 2018-09-21 | 辽宁大学 | A kind of abrasion-resistant coatings autoreaction flux-cored wire and its preparation and application |
| CN107262964A (en) * | 2017-05-12 | 2017-10-20 | 天长市通联焊业有限公司 | A kind of high-toughness wear-resistant flux-cored wire |
| CN111940948B (en) * | 2020-07-24 | 2021-03-19 | 天津沃盾耐磨材料有限公司 | Environment-friendly high-wear-resistance flux-cored wire and preparation method thereof |
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