CN106041357B - A kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire and preparation method thereof - Google Patents
A kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire and preparation method thereof Download PDFInfo
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- CN106041357B CN106041357B CN201610609326.3A CN201610609326A CN106041357B CN 106041357 B CN106041357 B CN 106041357B CN 201610609326 A CN201610609326 A CN 201610609326A CN 106041357 B CN106041357 B CN 106041357B
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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
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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
- B23K35/36—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
- B23K35/3601—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 with inorganic compounds as principal constituents
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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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
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- 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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Abstract
The present invention discloses a kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, and using mild-carbon steel strip as crust, drug core component is by mass percentage：55~65% high carbon ferro-chrome, 16~24% nickel powder, 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 iron powder, and medicine core powder presses the 50 56% of welding wire gross weight of the present invention.Welding wire provided by the invention, by adding varigrained medicine core component, good welding technological properties is ensure that, and by adding appropriate Ni in medicine core, promotes austenite increasing number in the hypereutectic tissue matrix of hardfacing alloy high-chromium cast iron-type, matrix solid solution strengthening effect is obvious simultaneously, hardfacing alloy is able to effective toughening, and crack resistance greatly enhances, and welding technological properties is good, deposition efficiency is high, and multilayer welding is without scarfing cinder.
Description
Technical field
The invention belongs to the welding field in Materials Processing Engineering, more particularly to a kind of nickel 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 remanufactured as a kind of green manufacturing technique.Due into
Originally it is cheap to be easy to prepare in addition, with M7C3Type carbide (M=Cr, Fe) obtains extensively for the rich chromium cast iron hardfacing alloy of wear-resisting skeleton
General application.Thick M in the hypereutectic tissue of rich chromium cast iron hardfacing alloy7C3Type carbide, on the one hand have for improving wearability more
Benifit, on the other hand itself easily there is metallurgical imperfection and micro-crack, fragility is very big, during turning into hardfacing alloy under arms
Develop into the macroscopic cracking even major reason of cracking destruction.Therefore, traditional high-chromium cast iron-type hardfacing alloy crack resistance is overcome
The defects of poor, it 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；But reduce C and alloying element content to also result in hardfacing alloy hard
Degree is decreased obviously, and wearability can not also be ensured.
The content of the invention
Goal of the invention：To solve technical problem present in prior art, the present invention provides a kind of nickel toughening rich chromium cast iron
Type self protection pile-up welding flux core welding wire and preparation method thereof.
Technology contents：To realize above-mentioned technical purpose, the present invention proposes a kind of nickel toughening high-chromium cast iron-type self-shield built-up welding
Flux-cored wire, including mild-carbon steel strip and medicine core, flux cored filler is in steel band, and described drug core component weight/mass percentage composition scope is such as
Under：55~65% high carbon ferro-chrome, 16~24% nickel powder, 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 iron powder, and medicine core powder presses the 50- of welding wire gross weight of the present invention
56%.
Preferably, described high carbon ferro-chrome phosphorus content is 9~10wt%, and chrome content is 60~70wt%, and remaining is iron；
Described ferro-boron boron content is 19~25wt%, and remaining is iron；Described almag aluminum content is 47~53wt%, and 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 adds.
Preferably, varigrained ferro-boron in the medicine core：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 adds.
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 adds.
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 adds.
Preferably, in the medicine core, the particle diameter of high carbon ferro-chrome, nickel powder 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 nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, comprises the following steps：
(1) mild steel steel band is rolled into U-shaped using molding roller, then by dust feeder by the present invention medicine core powder
It is added to by the 50-56% of welding wire gross weight of the present invention in U-lag；
(2) U-lag is healed up, makes medicine core parcel wherein, by wire drawing die, by road drawing, tube reducing, finally reach 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.
Nickel powder：Expand austenite phase in matrix, and solution strengthening matrix.
Ferro-boron：Deoxidation, weld pool surface tension force is reduced, improve 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, strengthen self-shield effect.
Manganese powder：Deoxidation, strengthen 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 Ni elements, among it is gathered in matrix in hardfacing alloy tissue, its as a kind of austenite former,
Austenite thing phase will be effectively increased, this, which will be highly advantageous to, improves alloy ductility, improves its crack resistance.On the other hand, Ni is present in
Solution strengthening effect is played in matrix, also functions to certain reinforcing effect.Built-up welding tissue is by first analysing M7C3Carbide, M3C is carbonized
The austenite of thing, martensite and Ni solution strengthening is formed, and the microstructure is the basis that hardfacing alloy has excellent wear.
In addition, graphite in medicine core, ferro-boron, the granularity of almag and manganese powder have two kinds：60 mesh and 200 mesh, with granularity
The mode of difference combination is added.In whole welding process, in the molten drop stage of existing extreme temperatures, there is the slightly lower molten bath of temperature again
In the stage, whichever is required for effectively avoiding air pollution from just obtaining qualified welding deposited metal in the stage, and seminar passes through
Early stage, substantial amounts 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 is that varigrained powder has different oxidation activities.The new of chemical metallurgy reactivity is controlled by component particle size
Thinking, superfine 200 mesh graphite, ferro-boron, almag and manganese powder are added in medicine core, carried out using it in the welding temperature rise period
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, so as to ensure whole 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, it is achieved thereby that
This welding wire remains able to possess good welding technological properties and welding in the case of no any mineral powder slag former of addition
Metal surface shapes.Meanwhile the addition of more granularity deoxidiers, ensure under the adding conditional of smaller deoxidier, obtain well certainly
Protecting effect, enough additions that medium high carbon ferrochrome, nickel powder etc. are formulated for medicine core create steric requirements.
Beneficial effect：The present invention in medicine core by with the addition of more large content of Ni elements, and it is in hardfacing alloy tissue
It is gathered among matrix, it will be effectively increased austenite thing phase, this improvement that will be highly advantageous to as a kind of austenite former
Alloy ductility, improve its crack resistance.On the other hand, Ni, which is present in matrix, plays solution strengthening effect, also functions to certain strong
Change effect.In addition, also controlling the new approaches of chemical metallurgy reactivity by component particle size, addition pole is respectively combined in medicine core
200 thin mesh and thicker 60 mesh graphite, ferro-boron, almag and manganese powder, be effectively ensured whole welding wire is heated, fusing, shape
Into molten drop, droplet transfer, form molten bath and start the Welding Metallurgy whole process of solidification and be provided with good self-shield effect, so as to real
Showed this welding wire in the case of any mineral powder slag former of no addition, remain able to possess 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 toughening is obvious, and overlay cladding toughness is preferable,
Average hardness is in 58~63HRC scopes.Wearability is 30 times or so of Q235.
Embodiment
According to following embodiments, the present invention may be better understood.However, the specific medicine core component described by embodiment
Proportioning, process conditions and its result are merely to illustrate the present invention, without that also should be retouched 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 is 60~
70wt%, remaining is iron；Described ferrosilicon silicon content is 72~80wt%, and remaining is iron；Described ferro-boron boron content be 19~
25wt%, remaining is iron；Described almag aluminum content is 47~53wt%, and remaining is magnesium.
Embodiment 1
A kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicine core, flux cored filler in
In steel band, drug core component is prepared by following quality：55g 80 mesh high carbon ferro-chromes, 24g 80 mesh nickel powders, 0.5g 60 mesh
Graphite, 1.5g 200 mesh graphite, 1g 60 mesh ferro-borons, 2g 200 mesh ferro-borons, 1g 60 mesh almags, 1g 200 mesh aluminium
Magnesium alloy, 2g 60 mesh manganese powders, 1g 200 mesh manganese powders, 11g iron powder.Taken various powder are inserted in mixed powder machine, mixing 40
Minute, in the H08A carbon steel steel band grooves for the 21 × 0.5mm for then mixed-powder being added U-shaped, filling rate 50%.Again by U-shaped
Groove heals up, and makes medicinal powder parcel wherein.Then its drawing by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm respectively is made
One or more in silk mould, by road drawing, tube reducing, finally obtain a diameter of 2.8~4.2mm product.Welding current is 280
~420A, weldingvoltage are 30~42V, speed of welding 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 nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicine core, flux cored filler in
In steel band, drug core component is prepared by following quality：65g 80 mesh high carbon ferro-chromes, 16g 80 mesh nickel powders, 1g 60 mesh stones
Ink, 1g 200 mesh graphite, 5g 60 mesh ferro-borons, 1g 200 mesh ferro-borons, 2g 60 mesh almags, 1.5g 200 mesh magnaliums
Alloy, 1.5g 60 mesh manganese powders, 2g 200 mesh manganese powders, 4g iron powder.Taken various powder are inserted in mixed powder machine, mixing 40
Minute, in the H08A carbon steel steel band grooves for the 21 × 0.5mm for then mixed-powder being added U-shaped, filling rate 56%.Again by U-shaped
Groove heals up, and makes medicinal powder parcel wherein.Then its drawing by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm respectively is made
One or more in silk mould, by road drawing, tube reducing, finally obtain a diameter of 2.8~4.2mm product.Welding current is 280
~420A, weldingvoltage are 30~42V, speed of welding 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 3
A kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicine core, flux cored filler in
In steel band, drug core component is prepared by following quality：58g 80 mesh high carbon ferro-chromes, 19g 80 mesh nickel powders, 0.6g 60 mesh
Graphite, 2g 200 mesh graphite, 2g 60 mesh ferro-borons, 3g 200 mesh ferro-borons, 1.4g 60 mesh almags, 1g 200 mesh aluminium
Magnesium alloy, 1g 60 mesh manganese powders, 3g 200 mesh manganese powders, 9g iron powder.Taken various powder are inserted in mixed powder machine, mixing 40
Minute, in the H08A carbon steel steel band grooves for the 21 × 0.5mm for then mixed-powder being added U-shaped, filling rate 52%.Again by U-shaped
Groove heals up, and makes medicinal powder parcel wherein.Then its drawing by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm respectively is made
One or more in silk mould, by road drawing, tube reducing, finally obtain a diameter of 2.8~4.2mm product.Welding current is 280
~420A, weldingvoltage are 30~42V, speed of welding 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 4
A kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicine core, flux cored filler in
In steel band, drug core component is prepared by following quality：60g 80 mesh high carbon ferro-chromes, 21g 80 mesh nickel powders, 1g 60 mesh stones
Ink, 1g 200 mesh graphite, 3g 60 mesh ferro-borons, 2g 200 mesh ferro-borons, 1g 60 mesh almags, 2g 200 mesh magnaliums close
Gold, 1g 60 mesh manganese powders, 2g 200 mesh manganese powders, 6g iron powder.Taken various powder are inserted in mixed powder machine, mixed 40 minutes,
Then mixed-powder is added in the 21 × 0.5mm H08A carbon steel steel band grooves of U-shaped, filling rate 53%.U-lag is closed again
Mouthful, make medicinal powder parcel wherein.Then its wire drawing die by a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm respectively is made
In one or more, by road drawing, tube reducing, finally obtain a diameter of 2.8~4.2mm product.Welding current be 280~
420A, weldingvoltage are 30~42V, speed of welding 0.4m/min, and 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.
Table 1 beats hardness and uses HR-150A Rockwell apparatuses, load 150Kg, each test specimens is taken with 5 point hardnesses, meter
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 is cut into 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 anti-wear performance of deposited metal is with just
The weight loss of formula abrasion is weighed.It is clear in ultrasonic wave in testing forward and backward every time by sample and inserting and fill the beaker of acetone soln
Wash in instrument and clean 3~5 minutes, record of being weighed after dry.Experiment Q235 steel sample as a comparison, contrast piece weight loss and measuring piece
The relative wear resistance ε for being used for built-up welding sample of weight loss.
Each embodiment deposited metal hardness and wear resistance of table 1
For the present invention by with the addition of more large content of Ni elements in medicine core, it is gathered in matrix in hardfacing alloy tissue
Among, it will be effectively increased austenite thing phase as a kind of austenite former, and this, which will be highly advantageous to, improves alloy ductility,
Improve its crack resistance.On the other hand, Ni, which is present in matrix, plays solution strengthening effect, also functions to certain reinforcing effect.This
Outside, the new approaches of chemical metallurgy reactivity are also controlled by component particle size, is respectively combined in medicine core and adds 200 superfine mesh
Thicker 60 mesh graphite, ferro-boron, almag and manganese powder, it is effectively ensured whole welding wire is heated, fusing, forms molten drop, molten
Drop transition, the Welding Metallurgy whole process for forming molten bath and starting to solidify are provided with good self-shield effect, it is achieved thereby that this weldering
Silk remains able to possess good welding technological properties and welding bead surface in the case of no any mineral powder slag former of addition
Shaping.The flux-cored wire welding procedure performance of the present invention is good, and alloy structure toughening is obvious, and overlay cladding toughness is preferable, average hardness
In 58~63HRC scopes.Wearability is 30 times or so of Q235.
Claims (10)
1. a kind of nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire, including mild-carbon steel strip and medicine core, flux cored filler is in steel
In band, it is characterised in that described drug core component weight/mass percentage composition scope is as follows：55~65% high carbon ferro-chrome, 16~24%
Nickel powder, 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
For iron powder, medicine core powder presses the 50-56% of welding wire gross weight.
2. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire 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 iron；Described ferro-boron boron content be 19~
25wt%, remaining is iron；Described almag aluminum content is 47~53wt%, and remaining is magnesium.
3. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, it is characterised in that different grains
The graphite of degree：The graphite of the graphite of 60 mesh and 200 mesh, with mass ratio 0.5 ~ 1：The mode of 1 ~ 2 combination adds.
4. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, 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, with mass ratio 1 ~ 5：The mode of 1 ~ 3 combination adds.
5. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, it is characterised in that different grains
The almag in footpath：The almag of the almag of 60 mesh and 200 mesh, with mass ratio 1 ~ 2：The mode of 1 ~ 2 combination adds.
6. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, it is characterised in that different grains
The manganese powder in footpath：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 adds.
7. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, it is characterised in that the medicine
The particle diameter of high carbon ferro-chrome, nickel powder and iron powder component in core is equal to 80 mesh.
8. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, it is characterised in that described low
Carbon steel tape thickness × width is 0.5 × 21 mm.
9. nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire according to claim 1, it is characterised in that the weldering
Any one in a diameter of 2.8 mm of silk, 3.2 mm, 3.5 mm, 3.8 mm and 4.2mm.
10. the preparation method of the nickel toughening high-chromium cast iron-type self protection pile-up welding flux core welding wire described in claim 1, its feature exist
In comprising 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
50-56% is added in U-lag；
（2）U-lag is healed up, makes medicine core parcel wherein, by wire drawing die, by road drawing, tube reducing, finally reaches its diameter
2.8~4.2 mm, obtain final products.
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| CN107363431B (en) * | 2017-08-28 | 2019-03-12 | 湘潭大学 | A kind of self-shield open arc built-up welding austenitic matrix flux-cored wire and its application method |
| CN115121992B (en) * | 2022-06-17 | 2024-01-19 | 中国船舶重工集团公司第七二五研究所 | AC/DC efficient welding rod for welding high-manganese austenitic low-temperature steel and preparation method thereof |
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| CN101306493B (en) * | 2008-07-01 | 2010-11-03 | 山东大学 | Flux-cored steel belt for build-up welding and preparation method thereof |
| CN101497152B (en) * | 2009-02-26 | 2011-04-27 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN101524789B (en) * | 2009-04-22 | 2011-06-08 | 北京佳倍德工程技术有限公司 | Sleeve-friendly wear-resistant strip flux-cored wire |
| CN102416534B (en) * | 2011-04-27 | 2013-06-26 | 杜荣臻 | Gas-protected surfacing flux-cored welding wire for surfacing |
| CN104308390B (en) * | 2014-09-02 | 2017-07-21 | 湘潭大学 | The flux-cored wire and preparation method of fabricated in situ WC particle enhancing iron-based composite coating |
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2016
- 2016-07-28 CN CN201610609326.3A patent/CN106041357B/en active Active
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