CN106392361B - A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded and preparation method thereof - Google Patents
A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded and preparation method thereof Download PDFInfo
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- CN106392361B CN106392361B CN201610605420.1A CN201610605420A CN106392361B CN 106392361 B CN106392361 B CN 106392361B CN 201610605420 A CN201610605420 A CN 201610605420A CN 106392361 B CN106392361 B CN 106392361B
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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
-
- 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 silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, and using mild-carbon steel strip as crust, drug core component is by mass percentage：60~75% 80 mesh high carbon ferro-chromes, 12~16% 80 mesh ferrosilicon, 0.5~1% 60 mesh graphite, 1~2% 200 mesh graphite, 1~5% 60 mesh ferro-borons, 1~3% 200 mesh ferro-borons, 1~2% 60 mesh almags, 1~2% 200 mesh almags, 1~2% 60 mesh manganese powders, 1~3% 200 mesh manganese powders, surplus are 80 mesh iron powders.Welding wire provided by the invention ensure that good welding technological properties, and by the way that suitable Si is added in medicine core, promote in the hypereutectic tissue of hardfacing alloy high-chromium cast iron-type (Cr, Fe) by adding varigrained medicine core component7C3Carbide is fined, and has Fe3Si phases are formed, and overlay cladding toughness is obviously improved, and wearability is good, and welding technological properties is good, and deposition efficiency is high, and multilayer welding is not necessarily to scarfing cinder, and welding wire manufacturing cost is cheap.
Description
Technical field
The invention belongs to the welding fields in Materials Processing Engineering, more particularly to a kind of silicon toughening high-chromium cast iron-type self-insurance
Protect flux-cored wire and preparation method thereof.
Background technology
Built-up welding is widely used in the reparation of all kinds of wear parts or remanufactures as a kind of green manufacturing technique.Due at
This is cheap in addition convenient for preparing, with M7C3Type carbide (M=Cr, Fe) is that the rich chromium cast iron hardfacing alloy of wear-resisting skeleton obtains extensively
General application.Coarse M in the hypereutectic tissue of rich chromium cast iron hardfacing alloy7C3On the one hand type carbide has more for improving wearability
On the other hand benifit itself is susceptible to metallurgical imperfection and micro-crack, brittleness is very big, becomes hardfacing alloy during military service
Develop into the macroscopic cracking even major reason of cracking destruction.Therefore, overcome traditional high-chromium cast iron-type hardfacing alloy crack resistance
The defect of difference is a hot subject for developing technique for overlaying in recent years.
Generally use reduces the method for C and alloying element content so that high-chromium cast iron-type hardfacing alloy is by hypereutectic tissue
Change to hypoeutectic structure, to obtain enough toughness；However it reduces C and alloying element content to also result in hardfacing alloy hard
Degree is decreased obviously, and wearability can not also be ensured.
Invention content
Goal of the invention：To solve the technical problems existing in the prior art, the present invention provides a kind of silicon toughening rich chromium cast iron
Type self-protection flux-cored wire and preparation method thereof.
Technology contents：To realize the above-mentioned technical purpose, the present invention proposes a kind of silicon toughening high-chromium cast iron-type self-shield medicine core
Welding wire, including mild-carbon steel strip and medicine core, for flux cored filler in steel band, the drug core component mass percentage range is as follows：
60~75% 80 mesh high carbon ferro-chromes, 12~16% 80 mesh ferrosilicon, 0.5~1% 60 mesh graphite, 1~2% 200 mesh stones
Ink, 1~5% 60 mesh ferro-borons, 1~3% 200 mesh ferro-borons, 1~2% 60 mesh almags, 1~2% 200 mesh magnaliums
Alloy, 1~2% 60 mesh manganese powders, 1~3% 200 mesh manganese powders, surplus are 80 mesh iron powders, medicine core powder is by welding wire gross weight
52-56%.
Preferably, the high carbon ferro-chrome phosphorus content is 9~10wt%, chrome content is 60~70wt%, remaining is iron；
The ferrosilicon silicon content is 72~80wt%, remaining is iron；The ferro-boron boron content is 19~25wt%, remaining is iron；
The almag aluminum content is 47~53wt%, remaining is magnesium.
Preferably, varigrained graphite in the medicine core：The graphite of the graphite of 60 mesh and 200 mesh, and with mass ratio 0.5
~1：The mode of 1~2 combination is added.
Preferably, varigrained ferro-boron in the medicine core：The ferro-boron of the graphite of 60 mesh and 200 mesh, and with mass ratio 1~
5：The mode of 1~3 combination is added.
Preferably, in the medicine core different-grain diameter almag：The almag of the almag of 60 mesh and 200 mesh,
And with mass ratio 1~2：The mode of 1~2 combination is added.
Preferably, in the medicine core different-grain diameter manganese powder：The manganese powder of the manganese powder of 60 mesh and 200 mesh, and with mass ratio 1~
2：The mode of 1~3 combination is added.
Preferably, in the medicine core, the grain size of high carbon ferro-chrome, ferrosilicon and iron powder component in the medicine core is equal to 80
Mesh.
Preferably, in the medicine core, the mild-carbon steel strip thickness × width is 0.5 × 21mm.
Preferably, in the medicine core, in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of the welding wire
Any one.
The preparation method of above-mentioned silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, includes the following steps：
(1) mild steel steel band is rolled into U-shaped using molding roller, medicine core powder is then pressed by the present invention by dust feeder
The 52-56% of welding wire gross weight is added in U-lag；
(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 main function is as follows in above-mentioned medicine core：
High carbon ferro-chrome：The transition alloy elements Cr into deposited metal, and C element is provided.
Ferrosilicon：Refine M7C3Carbide, and form Fe3Si phases, solution strengthening matrix.
Ferro-boron：Deoxidation reduces weld pool surface tension, improves figuration of bead.
Graphite：C element is provided, deoxidation forms CO, and reduces the partial pressure of oxygen in welding atmosphere and nitrogen partial pressure.
Almag：Deoxidation, fixed nitrogen enhance self-shield effect.
Manganese powder：Deoxidation enhances self-shield effect；Transition alloy elements Mn.
By the effect summary of each component in above-mentioned technical proposal and medicine core it is understood that the present invention in medicine core due to adding
More large content of Si elements may be not present among being gathered in matrix in hardfacing alloy tissue in M7C3In, to M7C3Carbon
Inhibition is played in the growth of compound so that the M in high-chromium cast iron-type hardfacing alloy7C3Carbide becomes tiny and disperse, this will
Being highly advantageous to improves alloy ductility, improves its crack resistance.On the other hand, the Fe due to enough Si in matrix is combined and is formed
Fe3Si phases also function to certain invigoration effect.The first analysis M that built-up welding tissue is distributed by small and dispersed7C3Carbide, M3C carbide,
Fe3The austenite of Si phases, martensite and Si solution strengthening is constituted, which is the base that hardfacing alloy has excellent wear
Plinth.
In addition, graphite in medicine core, ferro-boron, almag and manganese powder granularity it is equal there are two types of：60 mesh and 200 mesh, with granularity
The mode of difference combination is added.In the whole welding process, the molten drop stage of existing extreme temperatures, and the molten bath for having temperature slightly lower
Stage, whichever are required for effectively avoiding air pollution just that qualified welding deposited metal can be obtained in stage, and seminar passes through
Early period, a large amount of engineer testing was found, the self-shield that welding wire can be obviously improved by varigrained above-mentioned medicine core component is imitated
Fruit.This, which is varigrained powder, has different oxidation activities.The new of chemical metallurgy reactivity is controlled by component particle size
Thinking adds superfine 200 mesh graphite, ferro-boron, almag and manganese powder in medicine core, is carried out in the welding temperature rise period using it
Effective precedent desoxydation, while thicker 60 mesh graphite, almag and manganese powder are added in medicine core, it is allowed to be retained in molten drop height
Thermophase and molten bath stage can also carry out effective deoxidation gas making, to ensure entire welding wire is heated, fusing, formed it is molten
Drop, the droplet transfer, formed molten bath and start solidification Welding Metallurgy whole process be provided with good self-shield effect, to realize
This welding wire remains able to have good welding technological properties and welding in the case of any mineral powder slag former of no addition
Metal surface shapes.Meanwhile the addition of more granularity deoxidiers, ensure under the adding conditional of smaller deoxidier, obtains well certainly
Protecting effect, enough additions that medium high carbon ferrochrome, ferrosilicon etc. are formulated for medicine core create steric requirements.
Advantageous effect：The present invention has effectively refined high chromium casting by being added to more large content of Si elements in medicine core
First analysis M in swage hardfacing alloy7C3Carbide, and form the Fe for playing certain invigoration effect3Si phases.Built-up welding tissue is by tiny
The first analysis M of Dispersed precipitate7C3Carbide, M3C carbide, Fe3The austenite of Si phases, martensite and Si solution strengthening is constituted, the type
Tissue is very advantageous in the wear-resisting property of hardfacing alloy.In addition, also controlling the new of chemical metallurgy reactivity by component particle size
Thinking is respectively combined in medicine core and adds 200 superfine mesh and thicker 60 mesh graphite, ferro-boron, almag and manganese powder, effectively
Ensure entire welding wire is heated, fusing, formed molten drop, the droplet transfer, formed molten bath and start solidification Welding Metallurgy it is whole
Has good self-shield effect, to realize this welding wire in the case of any mineral powder slag former of no addition, still
Can have good welding technological properties and welding bead shaping surface.The flux-cored wire welding procedure performance of the present invention is good, alloy
Structure refinement is apparent, and overlay surface hardness is uniform, and toughness is preferable, and average hardness is in 59~65HRC ranges.Wearability is Q235
30 times or so.
Specific implementation mode
According to following embodiments, the present invention may be better understood.However, specific medicine core component described in embodiment
Proportioning, process conditions and its result are merely to illustrate the present invention, are retouched in detail without that should will not limit in claims
The present invention stated.Wherein, the high carbon ferro-chrome phosphorus content used in following examples be 9~10wt%, chrome content be 60~
70wt%, remaining is iron；The ferrosilicon silicon content is 72~80wt%, remaining is iron；The ferro-boron boron content be 19~
25wt%, remaining is iron；The almag aluminum content is 47~53wt%, remaining is magnesium.
Embodiment 1
A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, including mild-carbon steel strip and medicine core, flux cored filler is in steel band
In, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 75g, the 80 mesh ferrosilicon of 12g, the 60 mesh graphite of 0.5g,
The 200 mesh graphite of 1g, the 60 mesh ferro-borons of 1g, the 200 mesh ferro-borons of 2g, the 60 mesh almags of 1g, the 200 mesh almags of 1g,
The 60 mesh manganese powders of 1.5g, the 200 mesh manganese powders of 1g, the 80 mesh iron powders of 4g.Taken various powder mergings are mixed in powder machine, mix 40 points
Then clock is added mixed-powder in the H08A carbon steel steel band slots of 21 × 0.5mm of U-shaped, filling rate 52%.Again by U-lag
It heals up, makes medicinal powder package wherein.Then make its wire drawing by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm respectively
It is one or more in mould, by road drawing, tube reducing, finally obtain the product of a diameter of 2.8~4.2mm.Welding current be 280~
420A, weldingvoltage are 30~42V, and speed of welding 0.4m/min, interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Heap
Weldering metal hardness and wearability are shown in Table 1.
Embodiment 2
A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, including mild-carbon steel strip and medicine core, flux cored filler is in steel band
In, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 60g, the 80 mesh ferrosilicon of 16g, the 60 mesh graphite of 1g,
200 mesh magnaliums of the 200 mesh graphite of 1.5g, the 60 mesh ferro-borons of 5g, the 200 mesh ferro-borons of 3g, the 60 mesh almags of 2g, 1.5g close
Gold, the 60 mesh manganese powders of 2g, the 200 mesh manganese powders of 1.5g, the 80 mesh iron powders of 6.5g.Taken various powder mergings are mixed in powder machine, are mixed
It closes 40 minutes, then mixed-powder is added in the H08A carbon steel steel band slots of 21 × 0.5mm of U-shaped, filling rate 56%.Again will
U-lag heals up, and makes medicinal powder package wherein.Then make it respectively by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm
Wire drawing die in it is one or more, by road drawing, tube reducing, finally obtain the product of a diameter of 2.8~4.2mm.Welding current
For 280~420A, weldingvoltage is 30~42V, speed of welding 0.4m/min, and interlayer temperature control is at 150~250 DEG C, heap
3 layers of weldering.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 3
A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, including mild-carbon steel strip and medicine core, flux cored filler is in steel band
In, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 65g, the 80 mesh ferrosilicon of 15g, the 60 mesh graphite of 0.6g,
The 200 mesh graphite of 2g, the 60 mesh ferro-borons of 3g, the 200 mesh ferro-borons of 1.5g, the 60 mesh almags of 1.2g, the 200 mesh magnaliums of 1.8g
Alloy, the 60 mesh manganese powders of 1.6g, the 200 mesh manganese powders of 3g, the 80 mesh iron powders of 5.3g.Taken various powder mergings are mixed in powder machine,
Then mixing 40 minutes is added mixed-powder in the H08A carbon steel steel band slots of 21 × 0.5mm of U-shaped, filling rate 55%.Again
U-lag is healed up, makes medicinal powder package wherein.Then make its respectively by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm,
It is one or more in the wire drawing die of 2.8mm, by road drawing, tube reducing, finally obtain the product of a diameter of 2.8~4.2mm.Welding
Electric current is 280~420A, and weldingvoltage is 30~42V, and speed of welding 0.4m/min, interlayer temperature control is 150~250
DEG C, 3 layers of built-up welding.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 4
A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, including mild-carbon steel strip and medicine core, flux cored filler is in steel band
In, drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 70g, the 80 mesh ferrosilicon of 13g, the 60 mesh graphite of 0.8g,
200 mesh magnaliums of the 200 mesh graphite of 1.8g, the 60 mesh ferro-borons of 2g, the 200 mesh ferro-borons of 1g, the 60 mesh almags of 1.5g, 2g close
Gold, the 60 mesh manganese powders of 1g, the 200 mesh manganese powders of 2g, the 80 mesh iron powders of 4.9g.Taken various powder mergings are mixed in powder machine, mixing
40 minutes, then mixed-powder is added in the H08A carbon steel steel band slots of 21 × 0.5mm of U-shaped, filling rate 53%.Again by U
Shape slot heals up, and makes medicinal powder package wherein.Then make it respectively by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm
It is one or more in wire drawing die, by road drawing, tube reducing, finally obtain the product of a diameter of 2.8~4.2mm.Welding current is
280~420A, weldingvoltage are 30~42V, and speed of welding 0.4m/min, interlayer temperature control is at 150~250 DEG C, built-up welding 3
Layer.Deposited metal hardness and wearability are shown in Table 1.
1 beaten hardness of table uses HR-150A Rockwell apparatuses, load 150Kg to take 5 point hardnesses to each test specimens, counts
Calculate average hardness value.
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 has effectively refined high-chromium cast iron-type heap soldering by being added to more large content of Si elements in medicine core
First analysis M in gold7C3Carbide, and form the Fe for playing certain invigoration effect3Si phases.Built-up welding tissue is distributed by small and dispersed
First analyse M7C3Carbide, M3C carbide, Fe3The austenite of Si phases, martensite and Si solution strengthening is constituted, which extremely has
Conducive to the wear-resisting property of hardfacing alloy.In addition, the new approaches of chemical metallurgy reactivity are also controlled by component particle size, in medicine core
In be respectively combined and add 200 superfine mesh and thicker 60 mesh graphite, ferro-boron, almag and manganese powder, be effectively ensured 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 bead shaping surface.The flux-cored wire welding procedure performance of the present invention is good, and alloy structure refinement is bright
Aobvious, overlay surface hardness is uniform, and toughness is preferable, and for average hardness in 59~65HRC ranges, wearability is 30 times of left sides of Q235
It is right.
Claims (10)
1. a kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, including mild-carbon steel strip and medicine core, flux cored filler in steel band,
It is characterized in that, the drug core component mass percentage range is as follows：60~75% 80 mesh high carbon ferro-chromes, 12~16%
80 mesh ferrosilicon, 0.5~1% 60 mesh graphite, 1~2% 200 mesh graphite, 1~5% 60 mesh ferro-borons, the 200 of 1~3%
Mesh ferro-boron, 1~2% 60 mesh almags, 1~2% 200 mesh almags, 1~2% 60 mesh manganese powders, 1~3%
200 mesh manganese powders, surplus are 80 mesh iron powders, and medicine core powder presses the 52-56% of welding wire gross weight.
2. silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded according to claim 1, which is characterized in that the high-carbon
Ferrochrome phosphorus content is 9~10wt%, and chrome content is 60~70wt%, remaining is iron；The ferrosilicon silicon content be 72~
80wt%, remaining is iron；The ferro-boron boron content is 19~25wt%, remaining is iron；The almag aluminum content is
47~53wt%, remaining is magnesium.
3. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, it is characterised in that different grains
The graphite of degree：The graphite of the graphite of 60 mesh and 200 mesh, and with mass ratio 0.5~1：The mode of 1~2 combination is added.
4. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, it is characterised in that different grains
The ferro-boron of degree：The ferro-boron of the ferro-boron of 60 mesh and 200 mesh, and with mass ratio 1~5：The mode of 1~3 combination is added.
5. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, it is characterised in that different grains
The almag of diameter：The almag of the almag of 60 mesh and 200 mesh, and with mass ratio 1~2：The mode of 1~2 combination adds
Enter.
6. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, it is characterised in that different grains
The manganese powder of diameter：The manganese powder of the manganese powder of 60 mesh and 200 mesh, and with mass ratio 1~2：The mode of 1~3 combination is added.
7. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, which is characterized in that the medicine
The grain size of high carbon ferro-chrome, ferrosilicon and iron powder component in core is equal to 80 mesh.
8. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, which is characterized in that described low
Carbon steel tape thickness × width is 0.5 × 21mm.
9. according to claim 1 contain silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, which is characterized in that the weldering
Silk a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm in any one.
10. the preparation method described in claim 1 containing silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded, feature exist
In including the following steps：
(1) mild steel steel band is rolled into U-shaped using molding roller, medicine core powder is then pressed by welding wire gross weight by dust feeder
52-56% is added in U-lag；
(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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| CN201610605420.1A CN106392361B (en) | 2016-07-28 | 2016-07-28 | A kind of silicon toughening High-chromium Cast Iron Flux Cored Wire For Self-shielded and preparation method thereof |
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| TiC对高铬堆焊合金层显微组织及耐磨性的影响;路德斌;《中国优秀硕士学位论文全文数据库工程科技I辑》;20140415(第4期);第35-37页 * |
| 刘大双等.Effects of titanium additive on microstructure and wear performance of iron-based slag-free self-shielded flux-cored wire.《Surface & Coatings Technology》.2012,第207卷 * |
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