CN106001993A - Self-fluxing alloy powder doped modified self-shield surfacing welding flux-cored wire and preparation method thereof - Google Patents
Self-fluxing alloy powder doped modified self-shield surfacing welding flux-cored wire and preparation method thereof Download PDFInfo
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- CN106001993A CN106001993A CN201610606654.8A CN201610606654A CN106001993A CN 106001993 A CN106001993 A CN 106001993A CN 201610606654 A CN201610606654 A CN 201610606654A CN 106001993 A CN106001993 A CN 106001993A
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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
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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
- B23K35/02—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 invention discloses a self-fluxing alloy powder doped modified self-shield surfacing welding flux-cored wire. A low-carbon steel strip is used as a cover. A flux core is prepared from, by mass, 50-60% of high carbon ferro-chrome, 30-38% of self-fluxing alloy powder, 1-3% of 60-mesh graphite, 1-5% of 200-mesh graphite, 1-2% of 60-mesh aluminum magnesium alloy, 1-2% of 200-mesh aluminum magnesium alloy, 1-2% of 60-mesh manganese powder, 1-3% of 200-mesh manganese powder and the balance of ferrous powder, wherein the self-fluxing alloy powder is the mixture of ferroboron and silicon iron with the mass ratio being 1:2, and the flux core powder accounts for 50-55% of the total weight of the welding wire. According to the self-fluxing alloy powder doped modified self-shield surfacing welding flux-cored wire, by adding the flux core components with different granularities, good welding technological performance is ensured; by adding B, Si and other self-fluxing alloy elements in the flux core, the surface tension of a surfacing welding pass is effectively reduced, the surfacing welding pass forming is effectively improved, the surfacing welding efficiency is effectively improved, and the welding technological window is effectively expanded.
Description
Technical field
The invention belongs to the welding field in Materials Processing Engineering, change more particularly to a kind of self-fluxing alloyed powder doping
Property self protection pile-up welding flux core welding wire and preparation method thereof.
Background technology
Built-up welding, as a kind of green manufacturing technique, is widely used in the reparation of all kinds of wear parts or remanufactures.Heap seam
The anti-wear performance of gold depends greatly on the ratio that the addition of alloy powder, i.e. alloy powder are shared in medicated core.
In order to increase the loadings of alloy powder in flux-cored wire, seminar has developed a series of heap welding agent of self-shield without slag in recent years
Core welding wire, almost without adding any mineral powder in the medicated core of such novel welding wire so that the loadings of alloy obtains maximum journey
The increase of degree, and the activity coefficient adding flux-cored wire with this, effectively increase the carbide quantity in hardfacing alloy and
Hardness, becomes one of the most potential material with prospect in built-up welding field.
But, owing to alloy amount is too much in medicated core, frequently resulting in hardfacing alloy surface tension excessive, mobility is poor, weldering
Road height is narrow, have impact on the welding technological properties of hardfacing alloy, limits the application range of non-slag self-protection build up.
Summary of the invention
Goal of the invention: for solving technical problem present in prior art, the present invention provides a kind of self-fluxing alloyed powder
Doping vario-property self protection pile-up welding flux core welding wire and preparation method thereof.
Technology contents: for realizing above-mentioned technical purpose, the present invention proposes a kind of self-fluxing alloyed powder doping vario-property self-insurance
Protect flux-cored wire, including mild-carbon steel strip and medicated core, flux cored filler in steel band, described drug core component weight/mass percentage composition
Scope is as follows: 50～the high carbon ferro-chrome of 60%, 30～the self-fluxing alloyed powder of 38%, 1～the 60 mesh graphite of 3%, 1～5%
200 mesh graphite, 1～the 60 mesh almags of 2%, 1～the 200 mesh almags of 2%, 1～the 60 mesh manganese powders of 2%, 1～
The 200 mesh manganese powders of 3%, surplus is iron powder, and wherein self-fluxing alloyed powder is the mixture of ferro-boron and ferrosilicon, its mass ratio: boron
Ferrum: ferrosilicon=1～2, medicated core powder accounts for the 50-55% of welding wire gross weight.
Preferably, described high carbon ferro-chrome phosphorus content is 9～10wt%, and chrome content is 60～70wt%, and remaining is ferrum；
Described ferrosilicon silicon content is 72～80wt%, and remaining is ferrum；Described ferro-boron boron content is 19～25wt%, and remaining is ferrum；
Described almag aluminum content is 47～53wt%, and remaining is magnesium.
Preferably, varigrained graphite in described medicated core: the graphite of 60 mesh and the graphite of 200 mesh, and with mass ratio 1～
The mode of 3:1～5 combination adds.
Preferably, the almag of different-grain diameter in described medicated core: the almag of 60 mesh and the almag of 200 mesh,
And add in the way of mass ratio 1～2:1～2 combination.
Preferably, the manganese powder of different-grain diameter in described medicated core: the manganese powder of 60 mesh and the manganese powder of 200 mesh, and with mass ratio 1～
The mode of 2:1～3 combination adds.
Preferably, in described medicated core, the particle diameter of high carbon ferro-chrome, ferrosilicon, ferro-boron and iron powder component in described medicated core is impartial
In 80 mesh.
Preferably, in described medicated core, described mild-carbon steel strip thickness × width is 0.5 × 21mm.
Preferably, in described medicated core, in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of described welding wire
Any one.
The preparation method of above-mentioned self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, comprises the steps:
(1) utilize molding roller that mild steel steel band is rolled into U-shaped, then by dust feeder, medicated core powder is pressed welding wire total
The 50-55% of weight joins in U-lag；
(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.
In above-mentioned medicated core, each component Main Function is as follows:
High carbon ferro-chrome: transition alloy elements Cr in deposited metal, and C element is provided.
Ferro-boron and ferrosilicon: as self-melting alloy element, effectively reduce welding wire fusing point, reduce weld pool surface tension force, improve
Molten bath mobility, optimizes figuration of bead.
Graphite: provide C element, deoxidation forms CO, and reduces the partial pressure of oxygen in welding atmosphere and nitrogen partial pressure.
Almag: deoxidation, fixed nitrogen, strengthen self-shield effect.
Manganese powder: deoxidation, strengthens self-shield effect；Transition alloy elements Mn.
Sketched it is understood that due to the fact that by medicated core by the effect of component each in technique scheme and medicated core
It is simultaneously introduced the self-melting alloy elements such as B, Si, not only enhances the self-shield effect of welding wire, and effectively reduce bead welding
Surface tension, is effectively improved bead welding and shapes, be effectively improved built-up welding efficiency, effectively expand welding parameter.Experimental study
Show, in this flux for flux-cored wire components system, add 80 mesh self-fluxing alloyed powders (ferro-boron and ferrosilicon mixed of 30～38%
Compound), and its mass ratio: ferro-boron: ferrosilicon=1～when 2, built-up welding resultant effect is preferable.If self-melting alloy element addition
Very few, it is impossible to effectively to reduce welding wire fusing point, improve figuration of bead quality, if self-melting alloy element addition is too much, then heap
The tearing tendency of solder alloy increases.If quality is than ferro-boron in mixture: ferrosilicon > 2, then overlay cladding crack resistance is not enough, mass ratio
Ferro-boron: ferrosilicon < 1, then hardfacing alloy rough surface, matt.
Additionally, in medicated core, the granularity of graphite, almag and manganese powder all has two kinds: 60 mesh and 200 mesh, with particle size differences group
The mode closed is added.In whole welding process, in the molten drop stage of existing extreme temperatures, there is again the molten bath stage that temperature is slightly lower,
Whichever is required for being prevented effectively from air pollution and just can obtain qualified welding deposited metal in stage, and seminar is big by early stage
The engineer testing of amount finds, can be obviously improved the self-shield effect of welding wire by varigrained above-mentioned medicated core component.This is
Varigrained powder has different oxidation activities.The new approaches of chemical metallurgy reactivity are controlled by component particle size,
Medicated core adds superfine 200 mesh graphite, almag and manganese powder, utilizes it to carry out effectively taking off in advance in the welding temperature rise period
Oxygen, adds thicker 60 mesh graphite, almag and manganese powder in medicated core simultaneously, utilizes and is retained in molten drop hot stage and molten bath
Stage, it is also possible to carry out effective deoxidation gas making, thus ensure to be heated at whole welding wire, melt, formed molten drop, the 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 having
In the case of adding any mineral powder slag former, remain able to possess good welding technological properties and welding metal surface becomes
Shape.Meanwhile, the interpolation of many granularities deoxidizer, it is ensured that under the adding conditional of less deoxidizer, obtains good self-shield effect, for
Medicated core formula medium high carbon ferrochrome, enough interpolations of self-fluxing alloyed powder create steric requirements.
Beneficial effect: the present invention, by being simultaneously introduced the self-melting alloy elements such as B, Si in medicated core, not only enhances weldering
The self-shield effect of silk, and effectively reduce bead welding surface tension, it is effectively improved bead welding and shapes, be effectively improved built-up welding
Deposition efficiency, effectively expands welding parameter.Additionally, control the new think of of chemical metallurgy reactivity also by component particle size
Road, is respectively combined 200 superfine mesh of interpolation and thicker 60 mesh graphite, almag and manganese powder in medicated core, is effectively ensured
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
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 tool
Standby good welding technological properties.The flux-cored wire welding technological properties of the present invention is good, welding condition window width, built-up welding effect
Rate is high, figuration of bead is attractive in appearance, overlay surface hardness is uniform, and wearability is good.
Detailed description of the invention
According to following embodiment, the present invention be may be better understood.But, the concrete medicated core component described by embodiment
Proportioning, process conditions and result thereof are merely to illustrate the present invention, and should also not retouch in detail without limitation in claims
The present invention stated.Wherein, the high carbon ferro-chrome phosphorus content used in following examples is 9～10wt%, chrome content be 60～
70wt%, remaining is ferrum；Described ferrosilicon silicon content is 72～80wt%, and remaining is ferrum；Described ferro-boron boron content be 19～
25wt%, remaining is ferrum；Described almag aluminum content is 47～53wt%, and remaining is magnesium.
Embodiment 1
A kind of self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicated core, medicated core
Being filled in steel band, drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, flux cored filler in steel band,
Drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, and flux cored filler is in steel band, and drug core component is by following
Quality is prepared: the 80 mesh high carbon ferro-chromes of 60g, the 80 mesh self-fluxing alloyed powders of 32g, the 60 mesh graphite of 1g, 200 mesh of 2g
Graphite, the 60 mesh almags of 1g, the 200 mesh almags of 1g, the 60 mesh manganese powders of 1g, the 200 mesh manganese powders of 1g, the 80 mesh ferrum of 1g
Powder, wherein self-fluxing alloyed powder is the mixture of ferro-boron and ferrosilicon, its mass ratio: ferro-boron: ferrosilicon=1.By taken various powder
End is inserted in mixed powder machine, mixes 40 minutes, in the H08A carbon steel steel band groove of the 21 × 0.5mm then mixed-powder being added U-shaped,
Filling rate is 55%.Again U-lag is healed up, make medicated powder wrap up wherein.Then make its respectively by a diameter of 4.2mm, 3.8mm,
One or more in the wire drawing die of 3.5mm, 3.2mm, 2.8mm, by road drawing, tube reducing, finally obtain a diameter of 2.8～
The product of 4.2mm.Welding current is 280～420A, and weldingvoltage is 30～42V, and speed of welding is 0.4m/min, interlayer temperature
Control at 150～250 DEG C, built-up welding 3 layers.Overlaying shaping, hardness and wearability are shown in Table 1.
Embodiment 2
A kind of self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicated core, medicated core
Being filled in steel band, drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, flux cored filler in steel band,
Drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, and flux cored filler is in steel band, and drug core component is by following
Quality is prepared: the 80 mesh high carbon ferro-chromes of 50g, the 80 mesh self-fluxing alloyed powders of 38g, the 60 mesh graphite of 3g, 200 mesh of 1g
Graphite, the 60 mesh almags of 2g, the 200 mesh almags of 2g, the 60 mesh manganese powders of 2g, 200 mesh manganese powder, the wherein self-fluxing natures of 2g
Alloy powder is the mixture of ferro-boron and ferrosilicon, its mass ratio: ferro-boron: ferrosilicon=2.Taken various powder are inserted mixed powder machine
In, mixing 40 minutes, in the H08A carbon steel steel band groove of the 21 × 0.5mm then mixed-powder being added U-shaped, filling rate is
50%.Again U-lag is healed up, make medicated powder wrap up wherein.Then make its respectively by a diameter of 4.2mm, 3.8mm, 3.5mm,
One or more in the wire drawing die of 3.2mm, 2.8mm, by road drawing, tube reducing, finally obtain the product of a diameter of 2.8～4.2mm
Product.Welding current is 280～420A, and weldingvoltage is 30～42V, and speed of welding is 0.4m/min, and interlayer temperature controls 150
～250 DEG C, built-up welding 3 layers.Overlaying shaping, hardness and wearability are shown in Table 1.
Embodiment 3
A kind of self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicated core, medicated core
Being filled in steel band, drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, flux cored filler in steel band,
Drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, and flux cored filler is in steel band, and drug core component is by following
Quality is prepared: the 80 mesh high carbon ferro-chromes of 52g, the 80 mesh self-fluxing alloyed powders of 34g, the 60 mesh graphite of 2g, 200 mesh of 5g
Graphite, the 60 mesh almags of 1.5g, the 200 mesh almags of 1.5g, the 60 mesh manganese powders of 1.5g, the 200 mesh manganese powders of 2g, 0.5g
80 mesh iron powders, wherein self-fluxing alloyed powder is the mixture of ferro-boron and ferrosilicon, its mass ratio: ferro-boron: ferrosilicon=1.5.Will
Taken various powder and inserted in mixed powder machine, mix 40 minutes, then mixed-powder is added the H08A carbon of 21 × 0.5mm of U-shaped
In 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 280～420A, and weldingvoltage is 30～42V, and speed of welding is 0.4m/
Min, interlayer temperature controls at 150～250 DEG C, built-up welding 3 layers.Overlaying shaping, hardness and wearability are shown in Table 1.
Embodiment 4
A kind of self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicated core, medicated core
Being filled in steel band, drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, flux cored filler in steel band,
Drug core component is prepared by following quality: include mild-carbon steel strip and medicated core, and flux cored filler is in steel band, and drug core component is by following
Quality is prepared: the 80 mesh high carbon ferro-chromes of 55g, the 80 mesh self-fluxing alloyed powders of 30g, the 60 mesh graphite of 1g, 200 mesh of 3g
Graphite, the 60 mesh almags of 1g, the 200 mesh almags of 1.5g, the 60 mesh manganese powders of 1.5g, the 200 mesh manganese powders of 3g, the 80 of 4g
Mesh iron powder, wherein self-fluxing alloyed powder is the mixture of ferro-boron and ferrosilicon, its mass ratio: ferro-boron: ferrosilicon=1.5.To be taken
Various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder are added the H08A carbon steel steel of 21 × 0.5mm of U-shaped
In trough of belt, filling rate is 54%.Again U-lag is healed up, make medicated powder wrap up wherein.Then make its respectively by a diameter of 4.2mm,
One or more in the wire drawing die of 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, tube reducing, finally obtain a diameter of 2.8
～the product of 4.2mm.Welding current is 280～420A, and weldingvoltage is 30～42V, and speed of welding is 0.4m/min, interlayer temperature
Degree controls at 150～250 DEG C, built-up welding 3 layers.Overlaying shaping, hardness and wearability are shown in Table 1.
The beaten hardness of table 1 uses HR-150A Rockwell apparatus, load 150Kg, and each test specimens takes 5 point hardnesses, meter
Calculate 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, by being simultaneously introduced the self-melting alloy elements such as B, Si in medicated core, not only enhances the self-shield of welding wire
Effect, and effectively reduce bead welding surface tension, it is effectively improved bead welding and shapes, be effectively improved built-up welding deposition efficiency,
Effectively expand welding parameter.Additionally, control the new approaches of chemical metallurgy reactivity also by component particle size, in medicated core
It is respectively combined 200 superfine mesh of interpolation and thicker 60 mesh graphite, almag and manganese powder, is effectively ensured and is subject at whole welding wire
Heat, melt, is formed molten drop, droplet transfer, formation molten bath and start solidify Welding Metallurgy whole process 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 weldering
Connect processing performance.The flux-cored wire welding technological properties of the present invention is good, and welding condition window width, built-up welding efficiency are high, welding bead
Shaping attractive in appearance, overlay surface hardness uniform, wearability is good.
Claims (9)
1. a self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicated core, medicated core is filled out
Fill in steel band, it is characterised in that described drug core component weight/mass percentage composition scope is as follows: 50～the high carbon ferro-chrome of 60%,
30～the self-fluxing alloyed powder of 38%, 1～the 60 mesh graphite of 3%, 1～the 200 mesh graphite of 5%, 1～the 60 mesh magnaliums of 2%
Alloy, 1～the 200 mesh almags of 2%, 1～the 60 mesh manganese powders of 2%, 1～the 200 mesh manganese powders of 3%, surplus is iron powder, wherein
Self-fluxing alloyed powder is the mixture of ferro-boron and ferrosilicon, its mass ratio: ferro-boron: ferrosilicon=1～2, and it is total that medicated core powder accounts for welding wire
The 50-55% of weight.
Self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire the most according to claim 1, it is characterised in that
Described high carbon ferro-chrome phosphorus content is 9～10wt%, and chrome content is 60～70wt%, and remaining is ferrum；Described ferrosilicon silicon content
Being 72～80wt%, remaining is ferrum；Described ferro-boron boron content is 19～25wt%, and remaining is ferrum；Described almag contains
Aluminum amount is 47～53wt%, and remaining is magnesium.
The most according to claim 1 containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, its feature
It is varigrained graphite: the graphite of 60 mesh and the graphite of 200 mesh, and by mass ratio (1～3): in the way of (1～5) combine
Add.
The most according to claim 1 containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, its feature
It is the almag of different-grain diameter: the almag of 60 mesh and the almag of 200 mesh, and with mass ratio 1～2:1～2 groups
The mode closed adds.
The most according to claim 1 containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, its feature
It is the manganese powder of different-grain diameter: the manganese powder of 60 mesh and the manganese powder of 200 mesh, and adds in the way of mass ratio 1～2:1～3 combination.
The most according to claim 1 containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, its feature
Being, the particle diameter of high carbon ferro-chrome, ferro-boron, ferrosilicon and iron powder component in described medicated core is equal to 80 mesh.
The most according to claim 1 containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, its feature
Being, described mild-carbon steel strip thickness × width is 0.5 × 21mm.
The most according to claim 1 containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire, its feature
It is, any one in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of described welding wire.
9. the preparation method containing self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire described in claim 1,
It is characterized in that, comprise the steps:
(1) utilize molding roller that mild steel steel band is rolled into U-shaped, then by dust feeder, medicated core powder is pressed welding wire gross weight
50-55% joins in U-lag；
(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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| CN201610606654.8A CN106001993B (en) | 2016-07-28 | 2016-07-28 | A kind of self-fluxing alloyed powder doping vario-property self protection pile-up welding flux core welding wire and preparation method thereof |
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| TW201318758A (en) * | 2011-11-01 | 2013-05-16 | Sorex Welding Co Ltd | Self-shielded flux cored welding wire |
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| CN106001993B (en) | 2018-05-22 |
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