CN106141495A - 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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- CN106141495A CN106141495A CN201610605419.9A CN201610605419A CN106141495A CN 106141495 A CN106141495 A CN 106141495A CN 201610605419 A CN201610605419 A CN 201610605419A CN 106141495 A CN106141495 A CN 106141495A
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention discloses a kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof, and including mild-carbon steel strip and medicated core, medicated core comprises the component of following mass percent: the high carbon ferro-chrome of 45～55wt%, the B of 6～16wt%4The TiB of C, 3～9wt%2, 3～the ZrB of 9wt%2The graphite of 1～3wt%, the 200 mesh cellulose powders of 60 mesh cellulose powders, 0.5～the 1wt% of 0.5～1wt%, the 200 mesh almags of 60 mesh almags, 0.5～the 2wt% of 1～3wt%, the 200 mesh silicomangans of 60 mesh silicomangans, 1～the 4wt% of 2～7wt%, surplus is iron powder, and described medicated core accounts for 50 54wt% of welding wire gross weight.The welding wire that the present invention provides, by adding varigrained medicated core component, ensure that good welding technological properties, and by the interpolation of polynary boride component, the polynary boride of disperse educt in welding process, has hardness high and uniform, the features such as wearability is good, and welding bead surface is substantially without slag, multilayer welding is without scarfing cinder.
Description
Technical field
The invention belongs to the welding field in Materials Processing Engineering, resistance to more particularly to a kind of polynary boride doping vario-property
Mill built-up welding self-protection flux-cored wire and preparation method thereof.
Background technology
The hardfacing flux-cored wire of Bead weld repair, generally relies on M at present7C3It it is main chromium carbide silicon carbide thing
Its hardness, M are provided7C3Microhardness is 1200-1700HV.Researchers are often through adding carbide Nb, Ti
Deng its hardness of raising further.On the whole, carbide is relied on to play wear-resistant skeleton function in hardfacing alloy tissue, to improve
The wearability of hardfacing alloy is the general choice of current welding material manufacturer.
Comparing with Carbide Phases, boride often has higher hardness, thus can provide more excellent resistance in theory
Mill performance, such as B4C is one of the hardest three kinds of materials of currently known nature, and its microhardness reaches about 3500HV,
TiB2Microhardness is 2800-3400HV, ZrB2Microhardness and TiB2Close.But, in traditional welding process, add B
The fragility being easily caused deposited metal increases, and is primarily due in high-temperature fusant process of setting, and B generates with other element reactions
Net dendritic boride, such boride poor toughness, easily crack, significantly limit its wearability.
Summary of the invention
Goal of the invention: the defect existed for the flux-cored wire of boride doping in prior art, the present invention provides 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 system of this flux-cored wire
Preparation Method.
Technical scheme: for achieving the above object, the present invention by the following technical solutions:
The polynary boride doping vario-property self-protecting flux-cored wire for hardfacing of the present invention, including mild-carbon steel strip and medicated core,
Described flux cored filler is in steel band, and described medicated core comprises the component of following mass percent: the high carbon ferro-chrome of 45～55wt%, and 6
～the B of 16wt%4The TiB of C, 3～9wt%2, 3～the ZrB of 9wt%2, the graphite of 1～3wt%, 60 mesh of 0.5～1wt% are fine
Dimension element powder, 0.5～the 200 mesh cellulose powders of 1wt%, 200 mesh of 60 mesh almags, 0.5～the 2wt% of 1～3wt%
Almag, the 200 mesh silicomangans of 60 mesh silicomangans, 1～the 4wt% of 2～7wt%, surplus is iron powder, and described medicated core accounts for
The 50-54wt% of welding wire gross weight.
Further, described high carbon ferro-chrome, B4C、TiB2、ZrB2, the mesh number of particle diameter of graphite and iron powder is all higher than or is equal to
80 mesh, i.e. high carbon ferro-chrome, B4C、TiB2、ZrB2, graphite and iron powder particle diameter less than or equal to 0.18mm.
Further, in described high carbon ferro-chrome, phosphorus content is 9.0～9.5wt%, and chrome content is 62～72wt%, and remaining is
Ferrum；Described almag aluminum content is 47～53wt%, and remaining is magnesium；Described silicomangan silicon content be 47～
53wt%, remaining is manganese.
Further, the cellulose of different-grain diameter: the cellulose of 60 mesh and the cellulose powder of 200 mesh, with mass ratio 1:1
The mode of combination adds.
Further, the almag of different-grain diameter: the almag of 60 mesh and the almag of 200 mesh, with mass ratio
The mode of 1:0.7～2:1 combination adds.
Further, the silicomangan of different-grain diameter: the silicomangan of 60 mesh and the silicomangan of 200 mesh, with mass ratio
The mode of 7:4～2:1 combination adds.
Further, described 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 described welding wire.
Present invention further proposes the preparation method of above-mentioned flux-cored wire, comprise the following steps:
(1) utilize molding roller that mild-carbon steel strip is rolled into U-shaped, then by dust feeder, medicated core powder is pressed welding wire gross weight
50-54wt% join in the U-lag of described mild-carbon steel strip；
(2) U-lag is healed up, make medicated core wrap up wherein, by wire drawing die, by road drawing, tube reducing, finally make its diameter
To 2.8～4.2mm, obtain final products.
The acting as of each component in above-mentioned medicated core:
High carbon ferro-chrome: form Cr7C3, Cr23C6, Cr3The carbide of the chromium such as C；And in matrix transition alloy elements
Cr, and C element is provided.
B4C、TiB2And ZrB2: Dispersed precipitate is in hardfacing alloy tissue, it is provided that preferable wear-resisting thing phase；Refine heap simultaneously
Solder alloy tissue.
Graphite: C element, deoxidation, gas making (CO, C and oxygen reactive moieties are oxidized to CO and cause the micro-boiling in molten bath) are provided, reduce
Stomata sensitivity.
Cellulose: deoxidation, gas making, strengthen self-shield effect.
Almag: for deoxidation, fixed nitrogen, strengthen self-shield effect.
Silicomangan: for deoxidation, wherein Si and Mn combined deoxidation, deoxidation effect more preferably, strengthens self-shield effect；Simultaneously
Transition alloy elements Mn and elements Si are provided.
Sketched by the effect of component each in technique scheme and medicated core it is understood that due to the fact that simultaneously in medicated core
Add polynary high rigidity boride B4C、TiB2And ZrB2, separate out in advance in weld physics metallurgical melt, and Dispersed precipitate.From
And make tissue fined, and avoid the formation of the tradition dendritic boride of net, this all can increase deposited metal obdurability.And
And, due to the B first separated out4C、TiB2And ZrB2Than (Cr, Fe)7C3Carbide has higher hardness and heat stability, significantly carries
The hardness of high deposited metal and wearability.The medicated core of the present invention is not added with the expensive alloying elements such as niobium, vanadium, is greatly saved weldering
Silk manufacturing cost, it is achieved that the most multielement enhanced original intention, has reached the purpose of the present invention.
In technique scheme, the addition manner of described boride is multiplexed combination.This is because, on the one hand,
B4C、TiB2And ZrB2High rigidity, high heat stability performance be approximation convergent, this most greatly contributes to hardfacing alloy wearability；
On the other hand, B4C、TiB2And ZrB2Fusing point, the physical and chemical performance the most difference such as form, this not only improves hard particle in weldering
Connect the wider high-temperature temperature interval successive of early solidification to separate out to constitute graded multicomponent strengthening thinning effect, be conducive to again abundant hard
The composition of matter phase is effectively to resist the grinding under particularly complex working conditions, it is provided that more stable excellent wear.
The granularity of cellulose, almag and silicomangan in medicated core of the present invention all has two kinds: 60 mesh and 200 mesh, with
The mode of particle size differences combination is added.In whole welding process, in the molten drop stage of existing extreme temperatures, there is again temperature slightly lower
In the molten bath stage, whichever is required for being prevented effectively from air pollution and just can obtain qualified welding deposited metal, by front in stage
Phase substantial amounts of engineer testing finds, can be obviously improved the self-shield effect of welding wire by varigrained above-mentioned medicated core component,
This is because varigrained powder has different oxidation activities.The present invention controls chemical metallurgy reaction by component particle size and lives
Property inventive concept, medicated core adds superfine 200 mesh celluloses, almag and silicomangan, utilize its welding
Temperature rise period carries out effective precedent desoxydation, adds thicker 60 mesh celluloses, almag and silicomanganese simultaneously and close in medicated core
Gold, utilizes it to be retained in molten drop hot stage and molten bath stage, it is also possible to carry out effective deoxidation gas making, thus ensure whole
Welding wire is heated, melt, form molten drop, droplet transfer, formation molten bath and start the Welding Metallurgy whole process of solidification and be provided with good
Self-shield effect, it is achieved thereby that this welding wire is not in the case of adding any mineral powder slag former, remains able to possess good
Good welding technological properties and welding metal surface shape.
Beneficial effect: compared with prior art, the invention have the advantages that
(1) present invention is by adding polynary boride B simultaneously in medicated core4C、TiB2And ZrB2, during Welding Metallurgy
Separate out a large amount of disperse educt in advance, it is provided that high rigidity, high thermal stability thinning microstructure, and by avoiding single multicomponent mixture
Addition manner effectively utilizes B4C、TiB2And ZrB2Fusing point, the difference on physical and chemical performance such as form, it is thus achieved that high-temperature temperature is interval
Successive separates out to constitute graded multicomponent strengthening thinning effect, and the composition being also beneficial to abundant hard phase is the most multiple effectively to resist
Grinding under the conditions of general labourer's condition, it is provided that 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 medicated core
Add 200 superfine mesh and thicker 60 mesh celluloses, almag and silicomangan, be effectively ensured be heated at whole welding wire, molten
Change, formation molten drop, droplet transfer, formation molten bath the Welding Metallurgy whole process starting to solidify are provided with good self-shield effect,
It is achieved thereby that this welding wire is not in the case of adding any mineral powder slag former, remain able to possess good welding procedure
Performance and welding bead shaping surface.
(3) the flux-cored wire welding technological properties of the present invention is good, and homogenization degree is high, and overlay surface hardness is equal
Even, average hardness is in 62～66HRC scopes.Wearability is 32～36 times of Q235.
(4) preparation method of flux-cored wire of the present invention is simple and reliable, it is easy to batch production, prepared welding wire welding procedure
Functional, deposition efficiency is high, and multilayer welding is without scarfing cinder.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further explained.Because being understood by, the tool described by following embodiment
Proportioning, process conditions and the result thereof of body medicated core component is to preferably explain the present invention, and does not constitute and protect the present invention
The restriction of scope.Wherein, the high carbon ferro-chrome phosphorus content used in following examples is 9.0～9.5wt%, and chrome content is 62
～72wt%, remaining is ferrum；Described almag aluminum content is 47～53wt%, and remaining is magnesium；Described silicomangan contains
Silicon amount is 47～53wt%, and 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 medicated core, medicated core
Being 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 6g4The 80 of C, 3g
Mesh TiB2, the 80 mesh ZrB of 9g2, 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, the 200 mesh almags of 0.5g, the 60 mesh silicomangans of 2g, the 200 mesh silicomangans of 1g, 20.5g's
80 mesh iron powders.Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder add U-shaped 21 ×
In the H08A carbon steel steel band groove of 0.5mm, filling rate is 50%.Again U-lag is healed up, make medicated powder wrap up wherein.Then its point is made
Not Tong Guo 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
Footpath, 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 controls at 150～250 DEG C, built-up welding 3 layers.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 medicated core, medicated core
Being 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 16g4The 80 of C, 9g
Mesh TiB2, the 80 mesh ZrB of 3g2, the 80 mesh graphite of 3g, the 60 mesh cellulose powders of 1g, the 200 mesh cellulose powders of 1g, the 60 of 3g
Mesh almag, the 200 mesh almags of 2g, the 60 mesh silicomangans of 7g, the 200 mesh silicomangans of 4g, the 80 mesh iron powders of 6g.
Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder is added the H08A of 21 × 0.5mm of U-shaped
In carbon steel steel band groove, filling rate is 52%.Again U-lag is healed up, make medicated powder wrap up wherein.Then make it respectively by a diameter of
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
Footpath is the product 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 controls at 150～250 DEG C, built-up welding 3 layers.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 medicated core, medicated core
Being 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 10g4The 80 of C, 6g
Mesh TiB2, the 80 mesh ZrB of 5g2, 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, the 200 mesh almags of 1.4g, the 60 mesh silicomangans of 4g, the 200 mesh silicomangans of 2g, the 80 of 16g
Mesh iron powder.Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder is added 21 × 0.5mm of U-shaped
H08A carbon steel steel band groove in, filling rate is 54%.Again U-lag is healed up, make medicated powder wrap up wherein.Then it is made to pass through respectively
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 controls at 150～250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are shown in Table 1.
In table 1, hardness test uses HR-150A Rockwell apparatus, load 150Kg, and each test specimens is taken 5 point hardnesses,
Calculating its average hardness value, wear test uses MLS-225 type wet type rubber wheel abrasion tester.
The overlay cladding of each embodiment is cut five a size of 57 × 25 × 6mm Wear specimens.Wear test parameter is as follows:
Rubber wheel diameter: 178mm, rubber wheel rotating speed: 240 revs/min, rubber wheel hardness: 70 (Shao Er hardness), load: 10Kg, rubber wheel
Revolution: pre-grinding 1000 turns, formal test turns 1000 turns, abrasive material: the quartz sand of 40～70 mesh.The anti-wear performance of deposited metal is with just
The weight loss of formula abrasion is weighed.Sample is inserted in the beaker filling acetone soln every time experiment is forward and backward, clear at ultrasound wave
Wash in instrument and clean 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 being used for built-up welding sample of weight loss.
Table 1 each embodiment deposited metal hardness and wear resistance
The present invention is by with the addition of polynary boride B in medicated core4C、TiB2And ZrB2, in weld physics metallurgical melt
Separate out in advance, and Dispersed precipitate, so that organizing fined, and avoiding traditional formation netting dendritic boride, significantly carrying
The hardness of high deposited metal and wearability, increase deposited metal obdurability.Additionally, it is anti-to control chemical metallurgy also by component particle size
Answer the new approaches of activity, medicated core is respectively combined 200 superfine mesh of interpolation and thicker 60 mesh celluloses, almag and silicon
Manganese alloy, be effectively ensured be heated at whole welding wire, melt, formed molten drop, droplet transfer, formation molten bath and start solidification welding
Metallurgical whole process is provided with good self-shield effect, it is achieved thereby that this welding wire is in the feelings not adding any mineral powder slag former
Under condition, remain able to possess good welding technological properties and welding bead shaping surface.The flux-cored wire welding usability of the present invention
Can be good, homogenization degree is high, and overlay surface hardness is uniform, and average hardness is in 62～66HRC scopes.Wearability is Q235
32～36 times.
Above example is that description example effect is played in the design of the technology to the present invention, can not limit the present invention with this
Protection domain, those skilled in the art, without departing from the spirit and scope of technical solution of the present invention, modify and are equal to
Replace, all should fall within the scope and spirit of the invention.
Claims (9)
1. a polynary boride doping vario-property self-protecting flux-cored wire for hardfacing, including mild-carbon steel strip and medicated core, described medicine
Core is filled in steel band, it is characterised in that: described medicated core comprises the component of following mass percent: the high carbon chromium of 45～55wt%
Ferrum, the B of 6～16wt%4The TiB of C, 3～9wt%2, 3～the ZrB of 9wt%2, the graphite of 1～3wt%, the 60 of 0.5～1wt%
The 200 mesh cellulose powders of mesh cellulose powder, 0.5～1wt%, 60 mesh almags, 0.5～the 2wt%'s of 1～3wt%
200 mesh almags, the 200 mesh silicomangans of 60 mesh silicomangans, 1～the 4wt% of 2～7wt%, surplus is iron powder, described
Medicated core accounts for the 50-54wt% of welding wire gross weight.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most according to claim 1, it is characterised in that:
Described high carbon ferro-chrome, B4C、TiB2、ZrB2, the mesh number of granularity of graphite and iron powder is all higher than or equal to 80 mesh.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most according to claim 1, it is characterised in that:
In described high carbon ferro-chrome, phosphorus content is 9.0～9.5wt%, and chrome content is 62～72wt%, and remaining is ferrum；Described almag
Aluminum content is 47～53wt%, and remaining is magnesium；Described silicomangan silicon content is 47～53wt%, and remaining is manganese.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most according to claim 1, it is characterised in that:
The cellulose of different-grain diameter: the cellulose of 60 mesh and the cellulose powder of 200 mesh, adds in the way of mass ratio 1:1 combination.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most according to claim 1, it is characterised in that:
The almag of different-grain diameter: the almag of 60 mesh and the almag of 200 mesh, with the side of mass ratio 1:0.7～2:1 combination
Formula adds.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most according to claim 1, it is characterised in that:
The silicomangan of different-grain diameter: the silicomangan of 60 mesh and the silicomangan of 200 mesh, in the way of mass ratio 7:4～2:1 combination
Add.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most according to claim 1, it is characterised in that:
Described mild-carbon steel strip thickness × width is 0.5 × 21mm.
Polynary boride doping vario-property self-protecting flux-cored wire for hardfacing the most 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 described welding wire.
9. the polynary boride doping vario-property self-protecting flux-cored wire for hardfacing as described in any one of claim 1-8
Preparation method, it is characterised in that: comprise the following steps:
(1) utilize molding roller that mild-carbon steel strip is rolled into U-shaped, then by dust feeder, medicated core powder is pressed welding wire gross weight
50-54wt% joins in the U-lag of described mild-carbon steel strip；
(2) U-lag is healed up, make medicated core wrap up wherein, by wire drawing die, by road drawing, tube reducing, finally make its diameter reach
2.8～4.2mm, obtain 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624426A (en) * | 2016-11-29 | 2017-05-10 | 辽宁大学 | Self-reaction flux-cored wire for wear-resisting coating and preparation and application of self-reaction flux-cored wire |
| 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 |
| CN111940948A (en) * | 2020-07-24 | 2020-11-17 | 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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| CN111940948A (en) * | 2020-07-24 | 2020-11-17 | 天津沃盾耐磨材料有限公司 | Environment-friendly high-wear-resistance flux-cored wire and preparation method thereof |
| 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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