CN106041361A - Pre-prepared alloy powder type flux-cored wire and self-protection open arc surfacing welding method of high-chromium alloy - Google Patents
Pre-prepared alloy powder type flux-cored wire and self-protection open arc surfacing welding method of high-chromium alloy Download PDFInfo
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- CN106041361A CN106041361A CN201610628017.0A CN201610628017A CN106041361A CN 106041361 A CN106041361 A CN 106041361A CN 201610628017 A CN201610628017 A CN 201610628017A CN 106041361 A CN106041361 A CN 106041361A
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- cored wire
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- chrome
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- 239000000843 powder Substances 0.000 title claims abstract description 194
- 238000003466 welding Methods 0.000 title claims abstract description 117
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 113
- 239000000956 alloy Substances 0.000 title claims abstract description 113
- 229910000599 Cr alloy Inorganic materials 0.000 title claims abstract description 33
- 239000000788 chromium alloy Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 87
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 79
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 44
- 239000011651 chromium Substances 0.000 claims abstract description 42
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 34
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 22
- 239000010439 graphite Substances 0.000 claims abstract description 22
- 239000011324 bead Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 27
- 229910052796 boron Inorganic materials 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 239000010703 silicon Substances 0.000 claims description 14
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 11
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 11
- 229910052720 vanadium Inorganic materials 0.000 claims description 10
- 238000011049 filling Methods 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 16
- 229910052698 phosphorus Inorganic materials 0.000 claims 16
- 239000011574 phosphorus Substances 0.000 claims 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 4
- 229910052748 manganese Inorganic materials 0.000 claims 4
- 239000011572 manganese Substances 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
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- 238000002844 melting Methods 0.000 abstract 1
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- 230000001105 regulatory effect Effects 0.000 abstract 1
- 235000012721 chromium Nutrition 0.000 description 33
- 238000005552 hardfacing Methods 0.000 description 23
- 241001016380 Reseda luteola Species 0.000 description 21
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- 230000000694 effects Effects 0.000 description 15
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- 238000005299 abrasion Methods 0.000 description 7
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- 238000000465 moulding Methods 0.000 description 6
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- 229910001021 Ferroalloy Inorganic materials 0.000 description 5
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- 238000005096 rolling process Methods 0.000 description 5
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- 229910052742 iron Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 3
- 150000001721 carbon Chemical group 0.000 description 3
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- 239000004575 stone Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
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- 239000004568 cement Substances 0.000 description 2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
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- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 102000000584 Calmodulin Human genes 0.000 description 1
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010011376 Crepitations Diseases 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- RZVXOCDCIIFGGH-UHFFFAOYSA-N chromium gold Chemical compound [Cr].[Au] RZVXOCDCIIFGGH-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- FXNGWBDIVIGISM-UHFFFAOYSA-N methylidynechromium Chemical compound [Cr]#[C] FXNGWBDIVIGISM-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- 238000009527 percussion Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Classifications
-
- 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
- B23K35/3601—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
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a pre-prepared alloy powder type flux-cored wire and a self-protection open arc surfacing welding method of a high-chromium alloy. The adopted technical scheme lies in that a cold rolled thin steel strip manufactured through low-carbon steel H08A as an outer coating, high carbon ferro-chrome, ferrosilicon, graphite and other metal powder are blended inside the coating to form a powder core of the flux-cored wire, and high carbon ferro-chrome, ferroboron, ferrosilicon and reduced iron powder are blended to form pre-prepared alloy powder; and before welding, the alloy powder is placed on a welding bead in advance, the surfacing welding current control value is set, a regulating melt mode combined with the mass of the pre-prepared alloy powder type flux-cored wire is set, a nonhomogeneous melt containing liquid high carbon ferro-chrome atom clusters formed through melting high carbon ferro-chrome particles is formed, and the concretionary high-chromium alloy which adopts the liquid high carbon ferro-chrome atom clusters as component donors, nucleates and grows into primary M7C3 abrasion-resistance phases is formed. According to the method, the problems that the source of components of surfacing welding alloys is single and the chromium content of the surfacing welding alloys is not liable to increase are solved, and the method is widely applied to surfacing welding manufacturing and repairing of parts with the requirement of abrasive wear resistance.
Description
Technical field
The present invention relates to a kind of welding bead preset alloy powder type flux-cored wire, particularly to a kind of preset alloy powder type medicine
Core welding wire and the method for self-shield open arc built-up welding high-chromium alloy thereof.
Background technology
Flux-cored wire submerged-arc welding or open arc welding are as a kind of cheap and reliable overlaying method, it is common that at Q235A etc.
Deposition high-chromium wear-resistant alloy on mild steel or low-alloy steel part base solid.But, affected by matrix constituent dilutions such as Q235A, knot
Close the many formation in interface along crystal mesh shape or dendritic hypoeutectic structure.This class loading wearability is general, and crack initiation is easily along net
Shape carbide extends, and causes high chromium hardfacing alloy layer fragmentation to form " peeling off hole ".Secondly, wear-resisting welding wire with flux core bag powder rate is general
Being 43%～52%, its parcel crust steel band specification and composition are fixed, and in order to meet molding and the heap welder thereof of flux-cored wire
Skill performance requirement, need to add other component appropriate, causes hardfacing alloy chromium content to be limited in below 18%Cr, abnormal eutectic (ferrum
Ferritic+carbonization three (ferrum, chromium))/[α-Fe+ (Fe, Cr)3C] quantity is more and to be allowed to fragility bigger.
Nascent M7C3Being the wear-resisting phase of master of high-chromium alloy mutually, M comprises the elements such as Fe, Cr, typically by homogeneous melt through energy
The effect forming cores such as volt, undulating composition and structure fluctuating are grown up and are formed, and this needs high carbon component addition.Hardfacing alloy carbon component
Source has: graphite, copmbined-carbon and the ferroalloy of solid solution carbon, and wherein graphite is the pass making flux-cored wire possess good drawing property
Key component, but also cause built-up welding melt carbon atom to be distributed excessively disperse and cause fragility metamorphosis eutectic [α-Fe+ (Fe, Cr)3C]
Many.
In order to improve deposition efficiency, the current value of 500～more than 600A during flux-cored wire self-shield open arc welding, is used to carry out
Built-up welding operation, burning loss of alloy amount is big and makes oxidation residua many.The most do not carry out stress relief annealing process due to workpiece postwelding, cause
Making weld seam residual thermal stress big, crackle is more.Although cracking releasable portion residual stress, but these crackles are at plus load
Easily extend under periodic shock effect and cause overlay cladding bulk to peel off, even extend to matrix and be allowed to lose efficacy, serious shadow
Ring the service life of wear-resisting workpiece.
Summary of the invention
For above-mentioned situation, it is an object of the invention to provide a kind of existing superior abrasion resistance, have again higher deposition efficiency
Preset alloy powder type flux-cored wire with higher toughness.
For achieving the above object, a kind of preset alloy powder type flux-cored wire, including flux-cored wire powder core and preset alloy
Powder, the weight/mass percentage composition of its component is respectively as follows:
Flux-cored wire powder core
Preset alloy powder
For further optimisation technique effect, flux-cored wire powder core and the more excellent of preset alloy powder consist of:
Flux-cored wire powder core
Preset alloy powder
For further optimisation technique effect, flux-cored wire powder core and the more excellent of preset alloy powder consist of:
Flux-cored wire powder core
Preset alloy powder
For further optimisation technique effect, flux-cored wire powder core and the more excellent of preset alloy powder consist of:
Flux-cored wire powder core
Preset alloy powder
A further object of the present invention is that providing a kind of uses various ways increase chromium content and promote the preferential of wear-resisting phase
Formed, reach to substantially reduce the quantity of fragility metamorphosis eutectic, and then reduce weld seam thermal deformation and residual stress；More excellent combining can be obtained
The method closing the abrasive wear resistance self-shield open arc built-up welding high-chromium alloy of performance.
For achieving the above object, a kind of method of self-shield open arc built-up welding high-chromium alloy, before weldering, first that alloy powder is preset
On welding bead, it is equipped with welding current controlling value simultaneously, and the tune combined with preset alloy powder type flux-cored wire quality is set
Control melt pattern so that it is formation comprises high carbon ferro-chrome particles fuse and forms the heterogeneous body melt of liquid high carbon and chromium elementide,
Realize directly with liquid high carbon and chromium elementide for composition donor forming core length greatly come into being M7C3The high chromium of wear-resisting phase solidification closes
Gold.
For further optimisation technique effect, in open arc self-shield built-up welding, flux for flux-cored wire adds mass percent is 6
～8% vanadium iron, 2～3% of vanadium content 50% add mass percent containing the molybdenum-iron component of molybdenum amount 50% and preset alloy powder
Silicon content 40 no less than 24%～the ferrosilicon of 47%.
For further optimisation technique effect, open arc self protection pile-up welding flux core welding wire flux-cored wire adds mass percent and is
2～the TiC granule of 3%.
For further optimisation technique effect, flux for flux-cored wire component and preset alloy powder whole mistake 60 mesh sieve.
For further optimisation technique effect, welding current controlling value is: 440～460A.
For further optimisation technique effect, during built-up welding unit length weld seam, needed for preset alloy powder quality is built-up welding
The 40%～60% of flux-cored wire quality.
A kind of preset alloy powder type flux-cored wire and the method for self-shield open arc built-up welding high-chromium alloy thereof, including use with
The cold rolling thin steel strip of mild steel H08A is outer layer foreskin, is equipped with high carbon ferro-chrome, ferrosilicon, graphite and other metal dust group in foreskin
Divide and constitute flux-cored wire powder core, be also equipped with and formed preset alloy powder by high carbon ferro-chrome, ferro-boron, ferrosilicon, reduced iron powder component；Weldering
Before, first alloy powder is preset on welding bead, is equipped with welding current controlling value simultaneously, and arranges and preset alloy powder type medicated core
The regulation and control melt pattern that Quality of Final Welding Wire combines so that it is formation comprises high carbon ferro-chrome particles fuse and forms liquid high carbon and chromium atom
The heterogeneous body melt of cluster, it is achieved directly forming core length is greatly come into being M with liquid high carbon and chromium elementide for composition donor7C3
The technical scheme of the high-chromium alloy of wear-resisting phase solidification；Overcome existing flux-cored wire submerged-arc welding and open arc welding etc. to obtain with traditional approach
Take with nascent M7C3It is the wear-resisting phase of master of high-chromium alloy mutually, and because of excessively Dispersed precipitate carbon atom in built-up welding melt, initiation
Fragility metamorphosis eutectic [α-Fe+ (Fe, Cr)3C] increase, and then cause high chromium hardfacing alloy layer fragmentation and form " peeling off hole " etc. and lack
Fall into；The chromium content of hardfacing alloy ingredient origin unification that its solution is fast and hardfacing alloy is difficult to the difficult problem improved.
The invention provides and a kind of brand-new obtain nascent M from homogenizing high chrome melts7C3The method of wear-resisting phase, greatly changes
It is apt to the wearability of alloy, has improve deposition efficiency, reduced weld residual stress, particularly add preset alloyed powder before weldering
The introducing mechanism at end, it is achieved that hardfacing alloy ingredient origin variation, improves the combination property of high-chromium alloy overlaying, pole comprehensively
Tool penetration and promotion application prospect；Surfacing manufacturing and the reparation requiring abrasive wear resistance parts can be widely used in, as cement is vertical
Grinding roller etc..
Compared with prior art, the method have the advantages that
() built-up welding deposition efficiency is different: welding unit length weld seam, preset is equivalent to required flux-cored wire hardfacing alloy matter
The alloying powder of amount 40%～60%, can improve built-up welding deposition efficiency under conditions of not increasing with welding energy consumption
36%～55%, there is significant energy conservation and consumption reduction effects, and make weld seam thermal deformation and residual stress be obviously reduced.
() hardfacing alloy ingredient origin is different: use flux-cored wire and preset alloy powder two ways supply Gao Ge
Composition needed for hardfacing alloy, adds hardfacing alloy chromium content.
() is come into being M7C3Separate out mode mutually different: be equivalent to required flux-cored wire hardfacing alloy quality by welding bead is preset
The alloying powder of 40%～60%, defines high chromium ferrochrome particles fuse and forms liquid high carbon and chromium elementide, directly with
This elementide be composition donor and forming core length is greatly come into being M7C3Mutually rather than by homogeneous melt through undulating composition, fluctuation of energy
Act on structure fluctuating etc. and being formed, reduce nucleation barrier, promote nascent M7C3Wear-resisting preferentially forming of phase and significantly reduce fragility
Abnormal eutectic ((α-Fe+M3(C, B)) quantity.
Tissue morphology at () hardfacing alloy combination interface is different: preset alloy powder reduces the component diluent of mother metal
Effect, forms a large amount of graininess and comes into being M7C3Wear-resisting phase, it is to avoid this calmodulin binding domain CaM forms the fragility such as hypoeutectic and eutectic and wear-resisting type
Poor tissue.
The macrohardness of () fore-put powder type flux-cored wire built-up welding high-chromium alloy reaches 59～61HRC, abrasive wear resistance
Performance is substantially better than same flux-cored wire hardfacing alloy；This open arc built-up welding two-layer does not cracks, and has higher toughness.
() high-chromium wear-resistant alloy preparation cost is low, and method is easy, and preset alloy powder built-up welding is equivalent to decrease equivalent
The welding job amount of quality flux-cored wire, and material, preparation cost the most substantially reduce.
The present invention is widely used in surfacing manufacturing and the reparation of requirement abrasive wear resistance parts；It is particularly suitable for wear-resisting
The parts that grain wear requirements is higher, such as surfacing manufacturing and the reparation of cement vertical grinding roller.
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the tissue morphology figure on fore-put powder type flux-cored wire open arc built-up welding high-chromium alloy top layer.
Fig. 2 is the phase composition figure on the open arc built-up welding high-chromium alloy of fore-put powder type flux-cored wire shown in Fig. 1 top layer.
Fig. 3 is the tissue morphology figure on flux-cored wire open arc built-up welding high-chromium alloy top layer.
Fig. 4 is the phase composition figure on the top layer of flux-cored wire open arc built-up welding high-chromium alloy shown in Fig. 3.
Fig. 5 is the tissue morphology figure at fore-put powder type flux-cored wire open arc built-up welding high-chromium alloy and Q235A basal body interface.
Fig. 6 is the tissue morphology figure at flux-cored wire open arc built-up welding high-chromium alloy and Q235A basal body interface.
Fig. 7 is the wear morphology figure of the open arc built-up welding high-chromium alloy of fore-put powder type flux-cored wire shown in Fig. 1.
Fig. 8 is the wear morphology figure of flux-cored wire open arc built-up welding high-chromium alloy shown in Fig. 3.
Detailed description of the invention
In conjunction with accompanying drawing, the present invention preset alloy powder type flux-cored wire and the side of self-shield open arc built-up welding high-chromium alloy thereof
Method, its formation mechenism and following structural features:
(i) introduce and include that preset alloy powder and flux-cored wire powder core are bonded high chromium hardfacing alloy source, and in medicated core
Welding wire powder in-core adds and adds mass percent in mass percent 8～10% silicon content 40～the ferrosilicon of 47% and fore-put powder
No less than 24% silicon content 40～the ferrosilicon of 47%, utilize the silicon repulsive interaction to carbon, reverse increase high carbon and chromium elementide
Stability, reduce its unstability formed fragility eutectic ((α-Fe+M3(C, B)) probability；
(ii) add mass percent 2～3% high-melting-point titanium carbide/TiC in flux-cored wire powder in-core, be allowed to high as high-carbon
The heterogeneous nucleation core of chromium atom cluster and reduce its forming core energy, promote to preferentially form nascent with high carbon and chromium elementide
M7C3Phase；
(iii) when built-up welding unit length weld seam, the preset alloy being equivalent to built-up welding consumed flux-cored wire quality 40%～60%
Powder, to control melt characteristic and organizational structure, and can make built-up welding deposition efficiency under conditions of welding energy consumption does not increases
Improve 36%～55%；
(iv), under conditions of welding energy does not increases, the fusing of preset alloying powder consumes a part of arc energy, subtracts
Little bath superheat degree, reduces the residual thermal stress of weld seam and discharges stress without passing through cracking；
(v) under conditions of welding energy does not increases, preset built-up welding the consumed flux-cored wire quality 40%～60% of being equivalent to
Alloy powder significantly reduces the diluting effect of matrix constituent, forms hypereutectic structure organization, carry at hardfacing alloy combination interface
High hardfacing alloy global tissue uniformity；
(vi) it is equipped with welding current controlling value 440～460A, arranges and combine with preset alloy powder type flux-cored wire quality
Regulation and control melt pattern so that it is formed comprise high carbon ferro-chrome particles fuse form liquid high carbon and chromium elementide heterogeneous body melt
Body, it is achieved directly forming core length is greatly come into being M with liquid high carbon and chromium elementide for composition donor7C3The height of wear-resisting phase solidification
Evanohm.
See accompanying drawing, the present invention preset alloy powder type flux-cored wire and the side of self-shield open arc built-up welding high-chromium alloy thereof
Method, is achieved in that
This type flux-cored wire diameter of phi 3.2, is made up of powder core and external portion two parts, and wherein powder core is by all kinds powder
Powder material forms, such as high carbon ferro-chrome, ferrosilicon, graphite and vanadium iron etc.；External portion selects H08A thin steel strip.
High carbon ferro-chrome, ferrosilicon, ferro-boron and the reduced iron powder constituent that the preset alloy powder of welding bead is combined by different grain size.Weldering
Before, with the every 1000mm of welding bead2The mode of preset 12.5g alloy powder, is first preset in the alloy powder of mix homogeneously on welding bead,
Form the powder bed of width 16mm, and make fore-put powder height everywhere keep consistent, then with MZ-1000 welding machine by flux-cored wire
Self-shield open arc welding on Q235A steel plate, melts preset alloy powder, forms width about 20mm ground floor weld seam.Treat that weld seam is empty
It is cooled to less than 100 DEG C, then according to the ground floor preset alloy powder of welding bead configuration requirement on ground floor weld seam, then uses medicated core
Welding wire open arc self-shield built-up welding, melts preset alloy powder simultaneously, forms second layer weld seam, postwelding air cooling.
Add a large amount of graphite in flux-cored wire, during weldering, be oxidized to carbon monoxide and carbon dioxide, the most spontaneous enough
Protective gas to cover molten bath, coordinate appropriate ferrosilicon, ferro-boron and ferromanganese with strengthen melt purify weld seam from deoxidation.
During flux-cored wire self-shield open arc welding, electric arc one end fusing flux-cored wire forms droplet transfer built-up welding molten bath；Another
End melts preset alloy powder and heated molten bath, owing to this end electric arc dissipates than flux-cored wire end electric arc, causes preset alloy
Change powder fully to melt, and under the blow force of arc percussion to molten bath, the preset alloy powder at welding bead two ends is involved in molten
Pond, reduces the mobility of melt and weakens its blow force of arc stirring action, define and be not completely melt or semi-molten alloy group
Dividing the heterogeneous body melt of granule mixing, wherein comprise high carbon ferro-chrome particles fuse and form liquid high carbon and chromium elementide, this is
Nascent M7C3Phase forming core provides " undulating composition " and " structure fluctuating " effect, and the cooling of open arc bead-on-plate weld provides again this phase soon
" fluctuation of energy " needed for forming core, thus with this high carbon and chromium elementide for composition donor, can rapid crystallization be nascent M7C3
Phase.
Based on this, above-mentioned nascent M7C3The precipitation mode of phase is that in this area and expected from acquirement, technology is imitated for the first time
Really.
First, by electric current controlling value 440～460A and preset alloy powder controlling of quality bath properties, it is allowed to form bag
The heterogeneous body melt of the high carbon ferro-chrome elementide containing high carbon ferro-chrome particles fuse；Secondly, the alloys such as appropriate V, Mo are added
Component, is allowed to be solid-solution in high carbon and chromium elementide, utilizes affinity that V, Mo and carbon are good and to increase these high carbon and chromiums former
The stability of sub-cluster；Meanwhile, add a large amount of silicon components, make silicon atom be distributed in high carbon and chromium elementide surrounding, the row of being formed
Scold the resistance that carbon atom spreads, the reverse stability increasing these high carbon and chromium elementides；Additionally, add appropriate TiC granule,
There is provided heterogeneous nucleation core for the crystallization of high carbon and chromium elementide, reduce its forming core energy, promote nascent M7C3It is more easy to mutually separate out.
In conjunction with accompanying drawing, above-mentioned factor synergism, add the stability of liquid high carbon and chromium elementide, promote to come into being
M7C3Preferentially form mutually, such as the nascent M of accompanying drawing 17C3The volume fraction of phase and amounts of particles substantially make a farfetched comparison Fig. 3 to be increased；Meanwhile, subtract
Lack high carbon and chromium unstability probability, reduce the generation of fragility eutectic, as shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, accompanying drawing 4；Secondly,
Eliminate the adverse effect of matrix constituent dilution, at hardfacing alloy combination interface, define hypereutectic structure organization, such as accompanying drawing 5 and attached
Shown in Fig. 6.
In conjunction with accompanying drawing, so far, this high-chromium alloy overlaying mode is: optimize flux-cored wire component and preset alloy powder group
Point, by current value and fore-put powder controlling of quality melt characteristic, it is allowed to form the height comprising high carbon ferro-chrome particles fuse
The heterogeneous body melt of the liquid high carbon and chromium elementide of stability, quickly forms nascent M as crystallization donor7C3Wear-resisting
Phase, thus reduce the formation probability of fragility eutectic, it is thus achieved that the high chromium hardfacing alloy of excellent in abrasion resistance, such as accompanying drawing 7 and accompanying drawing 8 institute
Show.
Embodiment 1
In conjunction with accompanying drawing, during making, weigh high carbon ferro-chrome, ferrosilicon, graphite, vanadium by the composition and ratio requirement of flux-cored wire powder core
Ferrum and other alloy powder, all powder whole mistake 60 mesh sieve.The YHZ-1 flux-cored wire that flux-cored wire manufactures in certain company limited
Shaping mechanism is for molding.This flux-cored wire outer layer foreskin is H08A cold-rolled strip (width 16mm × thickness 0.36mm, as follows),
Being equipped with ferroalloy, graphite, carbide and metal dust in foreskin and constitute powder core, its powder core composition mass percent is: high carbon chromium
Ferrum 65%, ferrosilicon 9%, crystalline flake graphite 8%, vanadium iron 8%, mid-carbon fe-mn 4%, molybdenum-iron 2%, TiC 2%, reduced iron powder 2%, institute
Stating powder core filling rate is 45%.After each component of powder core stirs, rolling is Φ 4.4 flux-cored wire, with each tube reducing 0.2mm,
Drawing tube reducing is Φ 3.2 welding wire successively.
Preset alloy powder consists of: high carbon ferro-chrome 55%, ferrosilicon 24%, ferro-boron 16%, reduced iron powder 5%, all powder
60 mesh sieves are crossed at end, and preset alloy powder stirs after weighing according to its composition and ratio.Before weldering, with every 1000mm2Preset 12.5g
The mode of alloy powder, is preset in alloy powder on welding bead, forms the bisque of wide 16mm, and makes bisque everywhere highly consistent,
Then at the test plate (panel) (Q235A steel) of 120mm × 80mm × 16mm by flux-cored wire welding machine MZ-1000 self-shield open arc welding, heap
Weldering electric current controlling value 460A, other technological parameter is as shown in table 1, and melts preset alloy powder, forms wide 20mm ground floor
Weld seam；Then, with every 1000mm2The mode of preset 12.5g alloy powder, preset alloyed powder last layer on ground floor weld seam,
Bisque width 16mm, flux-cored wire self-shield open arc welding, and melt fore-put powder, form second layer weld seam.Postwelding weld seam flawless
With the defects such as pore, only trace residue.
Table 1: flux-cored wire self-shield open arc bead-welding technology parameter
In conjunction with accompanying drawing, the processing of bead weld specimen line cutting technology is prepared as 57mm × 25.5mm × 6mm wearability sample,
And test its case hardness with HR-150 Rockwell apparatus.
Abrasion test uses the MLS-225B type wheeled abrasion tester of damp sand rubber, and experimental condition is as follows: rubber wheel is straight
Footpath 178mm, hardness are 60 Shao Er, and added counterweight weighs 2.5 kilograms, rubber wheel rotating speed 240 revs/min, and mortar ratio was 60 mesh
1500 grams of quartz sands of sieve join 1000 grams of tap waters.Sample elder generation pre-grinding 1000 turns, rinses well, dries up, and claims initial weight M0, the most just
Formula is cleaned after testing 1000 turns and is dried up, and weigh M1, quality Δ M=M is definitely lost in sample abrasion0-M1.With comparative example 1 bead weld specimen it is
Standard specimen 1#, relative wear coefficient ε=standard specimen definitely loses quality/sample and definitely loses quality, and result of the test is shown in Table 2.
Embodiment 2
In conjunction with accompanying drawing, during making, weigh high carbon ferro-chrome, ferrosilicon, graphite, vanadium by the composition and ratio requirement of flux-cored wire powder core
Ferrum and other alloy powder, all powder whole mistake 60 mesh sieve.The YHZ-1 flux-cored wire that flux-cored wire manufactures in certain company limited
Shaping mechanism is for molding.This flux-cored wire outer layer foreskin is H08A cold-rolled strip (16mm × 0.36mm), is equipped with ferrum and closes in foreskin
Gold, graphite, carbide and metal dust constitute powder core, and the composition (mass percent) of this powder core is: high carbon ferro-chrome 60%, ferrosilicon
10%, crystalline flake graphite 7%, vanadium iron 6%, mid-carbon fe-mn 3%, molybdenum-iron 3%, TiC 3%, reduced iron powder 8%, described powder core is filled
Rate is 47%.After each component of powder core stirs, rolling is Φ 4.4 flux-cored wire, and with each tube reducing 0.2mm, drawing subtracts successively
Footpath is Φ 3.2 welding wire.
Fore-put powder consists of: high carbon ferro-chrome 45%, ferrosilicon 36%, ferro-boron 16%, reduced iron powder 3%, and fore-put powder is advised
Model and implementation step content are with embodiment 1, and during built-up welding, electric current controlling value is 440A, and other content is with embodiment 1.
Embodiment 3
In conjunction with accompanying drawing, during making, weigh high carbon ferro-chrome, ferrosilicon, stone by the composition and ratio requirement of flux-cored wire powder core
Ink, vanadium iron and other alloy powder, all powder whole mistake 60 mesh sieve.The YHZ-1 medicine that flux-cored wire manufactures in certain company limited
Core welding wire shaping mechanism is for molding.This flux-cored wire outer layer foreskin is H08A cold-rolled strip (16mm × 0.36mm), joins in foreskin
Being constituted powder core with ferroalloy, graphite, carbide and metal dust, the composition (mass percent) of this powder core is: high carbon ferro-chrome
63%, ferrosilicon 8%, crystalline flake graphite 9%, vanadium iron 7%, mid-carbon fe-mn 5%, molybdenum-iron 3%, TiC 2%, reduced iron powder 3%, described
Powder core filling rate is 46%.After each component of powder core stirs, rolling is Φ 4.4 flux-cored wire, with each tube reducing 0.2mm, depends on
Secondary drawing tube reducing is Φ 3.2 welding wire.
Preset powder constituent of putting is: high carbon ferro-chrome 50%, ferrosilicon 30%, ferro-boron 18%, reduced iron powder 2%, fore-put powder
Specification and implementation step content are with embodiment 1, and during built-up welding, electric current controlling value is 450A, and other content is with embodiment 1.
Embodiment 4
In conjunction with accompanying drawing, during making, weigh high carbon ferro-chrome, ferrosilicon, stone by the composition and ratio requirement of flux-cored wire powder core
Ink, vanadium iron and other alloy powder, all powder whole mistake 60 mesh sieve.The YHZ-1 medicine that flux-cored wire manufactures in certain company limited
Core welding wire shaping mechanism is for molding.This flux-cored wire outer layer foreskin is H08A cold-rolled strip (16mm × 0.36mm), joins in foreskin
Being constituted powder core with ferroalloy, graphite, carbide and metal dust, the composition (mass percent) of this powder core is: high carbon ferro-chrome
61.5%, ferrosilicon 10%, crystalline flake graphite 7%, vanadium iron 6%, mid-carbon fe-mn 3%, molybdenum-iron 3%, TiC 2.5%, reduced iron powder
7%, described powder core filling rate is 46.5%.After each component of powder core stirs, rolling is Φ 4.4 flux-cored wire, to subtract every time
Footpath 0.2mm, drawing tube reducing is Φ 3.2 welding wire successively.
Preset powder constituent of putting is: high carbon ferro-chrome 48%, ferrosilicon 32%, ferro-boron 16%, reduced iron powder 4%, fore-put powder
Specification and implementation step content are with embodiment 1, and during built-up welding, electric current controlling value is 445A, and other content is with embodiment 1.
Embodiment 5
In conjunction with accompanying drawing, during making, weigh high carbon ferro-chrome, ferrosilicon, stone by the composition and ratio requirement of flux-cored wire powder core
Ink, vanadium iron and other alloy powder, all powder whole mistake 60 mesh sieve.The YHZ-1 medicine that flux-cored wire manufactures in certain company limited
Core welding wire shaping mechanism is for molding.This flux-cored wire outer layer foreskin is H08A cold-rolled strip (16mm × 0.36mm), joins in foreskin
Being constituted powder core with ferroalloy, graphite, carbide and metal dust, the composition (mass percent) of this powder core is: high carbon ferro-chrome
64%, ferrosilicon 8%, crystalline flake graphite 8.5%, vanadium iron 8%, mid-carbon fe-mn 4%, molybdenum-iron 3%, TiC 2.5%, reduced iron powder 2%,
Described powder core filling rate is 45.5%.After each component of powder core stirs, rolling is Φ 4.4 flux-cored wire, with each tube reducing
0.2mm, drawing tube reducing is Φ 3.2 welding wire successively.
Preset powder constituent of putting is: high carbon ferro-chrome 53%, ferrosilicon 28%, ferro-boron 16%, reduced iron powder 3%, fore-put powder
Specification and implementation step content are with embodiment 1, and during built-up welding, electric current controlling value is 455A, and other content is with embodiment 1.
Table 2: comparison example and the Abrasive Resistance of Stubble-cleaning of each embodiment hardfacing alloy
Comparison example 1
Use commercially available rich chromium cast iron flux-cored wire (Φ 3.2) at the test plate (panel) (Q235A steel) of 120mm × 80mm × 16mm
On, by welding machine MZ-1000 self-shield open arc built-up welding two-layer, welding current 550A, other technological parameter is as shown in table 1.Monolayer heap
Postwelding remained on surface has a small amount of slag, and the 8～12mm transversal cracks being spaced occurs, and double-deck heap postwelding face of weld also occurs few
Amount longitudinal crack.
The processing of wearability sample, hardness test and abrasion test content are with embodiment 1.
Comparison example 2
Use the present invention high chromium flux-cored wire (Φ 3.2) on the test plate (panel) (Q235A steel) of 120mm × 80mm × 16mm,
The most preset alloy powder, with welding machine MZ-1000 self-shield open arc built-up welding two-layer, welding current 450A, other technological parameter such as table 1
Shown in.Built-up welding rear surface remains trace slag, the defect such as flawless and pore.
The processing of wearability sample, hardness test and abrasion test content are with embodiment 1.
From table 2 it can be seen that the relative wear coefficient ε of welding bead fore-put powder type flux-cored wire built-up welding high-chromium alloy of the present invention
It is 3.19～3.61 times of commercially available rich chromium cast iron flux-cored wire hardfacing alloy, wherein closes without fore-put powder flux-cored wire built-up welding height chromium
Gold is 2.06 times of commercially available rich chromium cast iron flux-cored wire hardfacing alloy.Fore-put powder type flux-cored wire built-up welding high-chromium alloy wear-resisting
Property than adding 1.13～1.55 times without the relative wear coefficient ε of fore-put powder flux-cored wire, wearability be improved significantly.In advance
Put powder flux-cored wire open arc built-up welding two-layer not ftracture, there is higher toughness.The preset alloy powder of welding bead not only improves built-up welding
Deposition efficiency, and improve the wearability of hardfacing alloy, and reduce material cost and preparation cost.
Claims (10)
1. a preset alloy powder type flux-cored wire, including flux-cored wire powder core and preset alloy powder, the quality of its component
Percentage composition is respectively as follows:
Flux-cored wire powder core
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 60～65%
Silicon content is the ferrosilicon/FeSi45 8～10% of 40～47%
Phosphorus content is not less than the crystalline flake graphite/C 7～9% of 98%
Vanadium content is the vanadium iron/FeV50-A 6～8% of 50%
Manganese content be 78～85%, phosphorus content be 1.5% mid-carbon fe-mn/FeMn80C1.5 3～5%
Containing molybdenum-iron/FeMo50-A 2～3% that molybdenum amount is 50%
Titanium carbide/TiC 2～3%
Iron-holder is not less than the reduced iron powder/Fe surplus of 98%
Described flux-cored wire powder core filling rate is 45～47%；
Preset alloy powder
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 45～55%
Silicon content is the ferrosilicon/FeSi45 24～36% of 40～47%
Boron content is the ferro-boron/FeB18C0.5 16～20% of 18%
Iron-holder is not less than the reduced iron powder/Fe surplus of 98%.
Preset alloy powder type flux-cored wire the most according to claim 1, it is characterised in that flux-cored wire powder core and preset
The more excellent of alloy powder consists of:
Flux-cored wire powder core
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 65%
Silicon content is the ferrosilicon/FeSi45 9% of 40～47%
Phosphorus content is not less than the crystalline flake graphite/C 8% of 98%
Vanadium content is the vanadium iron/FeV50-A 8% of 50%
Manganese content be 78～85%, phosphorus content be 1.5% mid-carbon fe-mn/FeMn80C1.5 4%
Containing molybdenum-iron/FeMo50-A 2% that molybdenum amount is 50%
Titanium carbide/TiC 2%
Iron-holder is not less than the reduced iron powder/Fe 2% of 98%
Described flux-cored wire powder core filling rate is 45%；
Preset alloy powder
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 55%
Silicon content is the ferrosilicon/FeSi45 24% of 40～47%
Boron content is the ferro-boron/FeB18C0.5 16% of 18%
Iron-holder is not less than the reduced iron powder/Fe 5% of 98%.
Preset alloy powder type flux-cored wire the most according to claim 1, it is characterised in that flux-cored wire powder core and preset
The more excellent of alloy powder consists of:
Flux-cored wire powder core
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 60%
The silicon content 40～ferrosilicon/FeSi45 10% of 47%
Phosphorus content is not less than the crystalline flake graphite/C 7% of 98%
Vanadium content is the vanadium iron/FeV50-A 6% of 50%
Manganese content 78～85%, the mid-carbon fe-mn/FeMn80C1.5 3% of phosphorus content 1.5%
Containing molybdenum-iron/FeMo50-A 3% that molybdenum amount is 50%
Titanium carbide/TiC 3%
Iron-holder is not less than the reduced iron powder/Fe 8% of 98%
Described flux-cored wire powder core filling rate is 47%；
Preset alloy powder
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 45%
The silicon content 40～ferrosilicon/FeSi45 36% of 47%
Boron content is the ferro-boron/FeB18C0.5 16% of 18%
Iron-holder is not less than the reduced iron powder/Fe 3% of 98%.
Preset alloy powder type flux-cored wire the most according to claim 1, it is characterised in that flux-cored wire powder core and preset
The more excellent of alloy powder consists of:
Flux-cored wire powder core
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 63%
Silicon content is the ferrosilicon/FeSi45 8% of 40～47%
Phosphorus content is not less than the crystalline flake graphite/C 9% of 98%
Vanadium content is the vanadium iron/FeV50-A 7% of 50%
Manganese content be 78～85%, phosphorus content be 1.5% mid-carbon fe-mn/FeMn80C1.5 5%
Containing molybdenum-iron/FeMo50-A 3% that molybdenum amount is 50%
Titanium carbide/TiC 2%
Iron-holder is not less than the reduced iron powder/Fe 3% of 98%
Described flux-cored wire powder core filling rate is 46%；
Preset alloy powder
Chrome content be 68～72%, phosphorus content be 8% high carbon ferro-chrome/FeCr70C8.0 50%
Silicon content is the ferrosilicon/FeSi45 30% of 40～47%
Boron content is the ferro-boron/FeB18C0.5 18% of 18%
Iron-holder is not less than the reduced iron powder/Fe 2% of 98%.
5. the method for a self-shield open arc built-up welding high-chromium alloy, it is characterised in that before weldering, first alloy powder is preset in welding bead
On, it is equipped with welding current controlling value simultaneously, and the regulation and control melt combined with preset alloy powder type flux-cored wire quality is set
Pattern so that it is formation comprises high carbon ferro-chrome particles fuse and forms the heterogeneous body melt of liquid high carbon and chromium elementide, it is achieved straight
Connect the forming core length with liquid high carbon and chromium elementide for composition donor greatly to come into being M7C3The high-chromium alloy of wear-resisting phase solidification.
6. according to the preset alloy powder type flux-cored wire described in claim 1,5 and self-shield open arc built-up welding high-chromium alloy thereof
Method, it is characterised in that it is 6～8% vanadium iron and 2～3% amount Han molybdenum of vanadium content 50% that flux for flux-cored wire adds mass percent
The molybdenum-iron component of 50% and preset alloy powder add the mass percent silicon content 40 no less than 24%～the ferrosilicon of 47%.
7. according to the preset alloy powder type flux-cored wire described in claim 1,5 and self-shield open arc built-up welding high-chromium alloy thereof
Method, it is characterised in that add mass percent 2～3%TiC granule in flux-cored wire open arc self-shield built-up welding.
8. according to the preset alloy powder type flux-cored wire described in claim 1,5 and self-shield open arc built-up welding high-chromium alloy thereof
Method, it is characterised in that flux-cored wire powder core and preset alloy powder component whole mistake 60 mesh sieve.
9. according to the preset alloy powder type flux-cored wire described in claim 1,5 and self-shield open arc built-up welding high-chromium alloy thereof
Method, it is characterised in that welding current controlling value is: 440～460A.
10. according to the preset alloy powder type flux-cored wire described in claim 1,5 and self-shield open arc built-up welding high-chromium alloy thereof
Method, it is characterised in that during built-up welding unit length weld seam, preset alloy powder quality is flux-cored wire quality needed for built-up welding
40%～60%.
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| CN106041359A (en) * | 2016-07-28 | 2016-10-26 | 江苏科技大学 | In-situ reaction composite hard phase echelon enhanced abrasion-resisting surfacing flux-cored wire and preparing method thereof |
| CN107363431A (en) * | 2017-08-28 | 2017-11-21 | 湘潭大学 | A kind of self-shield open arc built-up welding austenitic matrix flux-cored wire and its application process |
| CN108620763A (en) * | 2018-05-03 | 2018-10-09 | 湘潭大学 | A kind of high boron flux-cored wire of self-shield open arc |
| CN109290698A (en) * | 2018-11-20 | 2019-02-01 | 湘潭大学 | The method for preparing high boron alloy as resurfacing welding material using Composite particle and solid welding wire |
| CN109365957A (en) * | 2018-12-24 | 2019-02-22 | 湘潭大学 | A kind of method of MULTILAYER COMPOSITE powder and self-shield open arc built-up welding high-chromium alloy |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041359A (en) * | 2016-07-28 | 2016-10-26 | 江苏科技大学 | In-situ reaction composite hard phase echelon enhanced abrasion-resisting surfacing flux-cored wire and preparing method thereof |
| CN107363431A (en) * | 2017-08-28 | 2017-11-21 | 湘潭大学 | A kind of self-shield open arc built-up welding austenitic matrix flux-cored wire and its application process |
| 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 |
| CN108620763A (en) * | 2018-05-03 | 2018-10-09 | 湘潭大学 | A kind of high boron flux-cored wire of self-shield open arc |
| CN109290698A (en) * | 2018-11-20 | 2019-02-01 | 湘潭大学 | The method for preparing high boron alloy as resurfacing welding material using Composite particle and solid welding wire |
| CN109365957A (en) * | 2018-12-24 | 2019-02-22 | 湘潭大学 | A kind of method of MULTILAYER COMPOSITE powder and self-shield open arc built-up welding high-chromium alloy |
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| CN106041361B (en) | 2018-09-25 |
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