CN104384745B - A kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire and preparation method thereof - Google Patents
A kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire and preparation method thereof Download PDFInfo
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- CN104384745B CN104384745B CN201410504391.0A CN201410504391A CN104384745B CN 104384745 B CN104384745 B CN 104384745B CN 201410504391 A CN201410504391 A CN 201410504391A CN 104384745 B CN104384745 B CN 104384745B
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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
- B23K35/02—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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire, the core wire of this flux-cored wire includes: alloying component, the first activating agent, the second activating agent, and wherein, the first activating agent is magnesium oxide, Si-Ca-Ba aluminium alloy and calcium fluoride；Second activating agent is the sinter of cerium oxide, Erbia, manganous silicate, Potassium borofluoride, potassium carbonate and KP1；In the deposited metal of this flux-cored wire, the content of Ti, Nb, V is: Ti 1.8～4.0wt%, Nb 0.8～3.0wt%, V 1.0～6.0wt%.Its preparation method includes: (1) prepares core wire raw material, and Task-size Controlling is below 60 mesh；(2) sinter after each component mixing corresponding for the second activating agent, be crushed to below 60 mesh；(3) alloy raw material is loaded in steel band with the first activating agent and the second activating agent mix homogeneously, make flux-cored welding wire for overlaying welding.Hardfacing alloy hardness of the present invention is high, and crystal grain is tiny, high abrasion resistance, good toughness, and crack sensitivity is low, it is possible to the submerged arc overlay welding welding wire promoting high titanium niobium vanadium combined reinforced is widely used.
Description
Technical field
The present invention relates to a kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire and preparation method thereof, belong to solder technology neck
Territory.
Background technology
Ti, Nb, V are that strong carbon, nitride forming element, particularly TiC have a highest fusing point, and firmly
Degree is the highest in MC system carbide, is hardening constituent highly desirable in hardfacing materials.Small and dispersed divides
TiC, NbC, VC of cloth is to hindering crystal grain to grow up and play good effect, and meanwhile, Ti, Nb, V can be with
The nitrogen being dissolved in welding pool forms (Ti, Nb, V) N or (Ti, Nb, V) (N, C).These granules
All can stop the generation of dynamic recrystallization and the growing up of austenite recrystallization crystal grain of deformed austeaite, crystal grain thinning,
Play the effect of refined crystalline strengthening.Therefore Ti, Nb, V become the head of the high-performance resurfacing welding material excellent mechanical property of acquisition
Choosing.
But during submerged arc overlay welding, need solder flux to carry out the protection of molten bath and welding bead, solder flux at high temperature melts,
Molten slag reacts with the weld face crystallized, during until slag solidifies.The product of reaction
To form layer oxide film on the metal surface, this layer of oxide-film under certain condition skull is come off play decisive
Effect.When flux-cored wire exists the elements such as a fairly large number of Cr, Ti, Nb, V, when welding bead temperature is big
In 800 DEG C time, the diffusion coefficient of metal ion is bigger than the diffusion coefficient of oxygen, and oxide-film will be enriched with these elements
Oxide, cause de-slag difficulty.Simultaneously the lattice dimensions of these oxides TiO, NbO generally individually than FeO with
The lattice dimensions of α-Fe is more close, causes removability of slag energy worse.TI, Nb, V high temperature oxidation stability is strong simultaneously, because of
The oxide quantity formed in this weld deposit process is many, causes welding bead molding spreadability and wellability bad.Therefore,
The removability of slag of the bead welding wire how improving high Ti, Nb, V strengthening can become to produce the urgent of high-performance bead welding wire
Demand.
Summary of the invention
For there is high Ti, Nb, V submerged arc overlay welding alloy of excellent mechanical property at present with the removability of slag, mouldability not
The shortcoming that can take into account, it is an object of the invention to provide a kind of high titanium with excellent removability of slag energy and processability
The submerged-arc overlaying welding flux-cored wire of niobium vanadium strengthening.
Another object of the present invention is to provide the preparation method of a kind of described high titanium height niobium submerged-arc overlaying welding flux-cored wire.
For achieving the above object, the present invention is by the following technical solutions:
A kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire, the core wire of this flux-cored wire includes following component: alloying component,
First activating agent, the second activating agent, wherein, the first activating agent is magnesium oxide, Si-Ca-Ba aluminium alloy and calcium fluoride,
Task-size Controlling is below 80 mesh；Second activating agent is cerium oxide, Erbia, manganous silicate, Potassium borofluoride, carbonic acid
Potassium and the sinter of KP1；In the deposited metal of this flux-cored wire, the content of Ti, Nb, V is: Ti
1.8～4.0wt%, Nb 0.8～3.0wt%, V 1.0～6.0wt%.
In the high titanium height niobium submerged-arc overlaying welding flux-cored wire of the present invention, according to the composition specific requirement choosing of built-up welding deposited metal
Select alloying component, mainly include chromium, carbon, manganese, silicon, ferrum, titanium, niobium, vanadium etc..
The high titanium height niobium submerged-arc overlaying welding flux-cored wire of the present invention adds activating agent, the wherein addition of the first activating agent
It is mingled with for adjusting the molding of welding bead, wellability and part removal, prevents from generating large number of at weld face
Oxide, it is to avoid slag face of weld produce extension symbiosis minerals.Second activating agent is for adjusting slag
Activity, is beneficial to de-slag, has effects such as improving welding bead molding, wellability simultaneously.
Preferably, in described first activating agent, the weight/mass percentage composition of each component is respectively as follows: magnesium oxide 10～80%,
Si-Ca-Ba aluminium alloy 0～50%, calcium fluoride 10～90%.
Preferably, in the raw materials for sintering of described second activating agent, the proportioning between each component is: potassium carbonate 10～46%,
Manganous silicate 8～60%, cerium oxide 0～37%, Erbia 0～10%, Potassium borofluoride 0～24%, KP1 20～
25%.
The modulus of described KP1 is 3, and ripple magnesium degree is 40 ° of B é.
Preferably, the total amount of described first activating agent and the second activating agent accounts for the 8～36% of whole core wire.
For ensureing the content of Ti, Nb, V in flux-cored wire, the filling that the flux-cored wire of the present invention uses
Coefficient is 30%.
The preparation method of a kind of described high titanium height niobium submerged-arc overlaying welding flux-cored wire, comprises the following steps:
(1) prepare core wire raw material, the Task-size Controlling of alloy raw material below 60 mesh, the granularity control of the first activating agent
System is below 80 mesh；
(2) sintering after each component mixing corresponding for the second activating agent, sintering temperature is 150 DEG C, and sintering time is about
2h, the material after sintering carries out break process, and Task-size Controlling is below 60 mesh；
(3) alloy raw material is loaded in steel band with the first activating agent and the second activating agent mix homogeneously, make heap
Weldering flux-cored wire.
The making of flux-cored wire belongs to industry mature technology, and its principle is: buy the flux-cored wire thin steel of special mild steel
Band, rolls into thin steel strip semi-circular shape with special equipment the most U-shaped etc., is added by alloy powder and form core wire, roll
Sealing, defines the thinnest the longest metal tube being surrounded by core wire, is then passed through rolling or cold drawing, is formed a diameter of
The flux-cored wire finished product of Φ 2.4mm～Φ 4mm.
It is an advantage of the current invention that:
Hardfacing alloy hardness of the present invention is high, and crystal grain is tiny, high abrasion resistance, good toughness, and crack sensitivity is low simultaneously,
The submerged arc overlay welding welding wire that high titanium niobium vanadium can be promoted combined reinforced is widely used.
The welding wire of the present invention has the good removability of slag and mouldability, simultaneously because add large number of in core wire
Titanium niobium vanadium is conducive to crystal grain refinement (crystal grain obtained in the present invention is generally less than 30 μm), and crystal grain refinement is conducive to heap
Wlding material toughness and tenacity and the raising of mechanical property, can be used for the backing roll of major diameter, working roll, hot roll, mill
The Bead weld repair of the first-class product of coal roller, blade, breaker roll, crusher hammer and protecting in advance, can not only be used for cushion also
Can be as working lining.
Detailed description of the invention
By the following examples the present invention is described in further detail, but cited embodiment is not limited to
The present invention.
Embodiment
1, the mixed proportion of the first activating agent
Being mixed in proportion by the material of the first activating agent, Task-size Controlling is below 80 mesh.The wherein content of magnesium oxide
Being 10～80%, the content of Si-Ca-Ba aluminium alloy is 0～50%, and the content of calcium fluoride is 10～90%, typical ratio
As shown in table 1:
The proportionate relationship (gross weight is 1000g) of table 1 first activating agent composition
| Embodiment | Magnesium oxide | Si-Ca-Ba aluminium alloy | Calcium fluoride |
| 1 | 300 | 300 | 400 |
| 2 | 100 | 100 | 800 |
| 3 | 800 | 0 | 200 |
| 4 | 400 | 500 | 100 |
2, the mixed proportion of the second activating agent
Being mixed in proportion by the raw materials for sintering of the second activating agent, wherein the content of potassium carbonate is 10～46%, manganous silicate
Content be 8～60%, the content of cerium oxide is 0～37%, and the content of Erbia is 0～10%, containing of Potassium borofluoride
Amount is 0～24%, and the content of KP1 is 20～25%, and typical ratio is as shown in table 2.
The proportionate relationship (gross weight is 1000g) of table 2 second activating agent composition
| Embodiment | Potassium carbonate | Manganous silicate | Potassium borofluoride | Cerium oxide | Erbia | KP1 |
| 1 | 100 | 580 | 0 | 20 | 100 | 200 |
| 2 | 320 | 310 | 50 | 80 | 20 | 220 |
| 3 | 460 | 80 | 230 | 0 | 10 | 220 |
| 4 | 200 | 80 | 100 | 370 | 0 | 250 |
Wherein, (modulus is about 3 to KP1；Ripple magnesium degree is 40 ° of B é), stir after mixing according to the ratio in table 2
Sintering after mixing uniformly, sintering temperature is 150 DEG C, sintering time about 2 hours, is then crushed to below 60 mesh.
3, flux-cored wire alloying component and the first activating agent, the relation of the second activating agent
For ensureing Ti:1.8～4.0wt% in flux-cored wire；Nb:0.8～3.0wt%；V:1.0～6.0wt%,
The activity coefficient that flux-cored wire of the present invention uses is 30%, and wherein in ferrotianium, Ti content is 25～30%, ferro-niobium
Middle content of niobium is 60～65%, and in vanadium iron, content of vanadium is 48～53%, by Theoretical Calculation, draws flux-cored wire
Middle ferrotianium, ferro-niobium, the addition of vanadium iron.Take the first activating agent and the second activating agent in proportion simultaneously, wherein, the
The total amount of one activating agent and the second activating agent accounts for the 8～36% of core wire total amount.1000g flux-cored wire alloyed powder is typical
Ratio is shown in Table 3, and other alloy raw material is mainly chromium, carbon, manganese, silicon, ferrum etc., the granularity control of alloy raw material
System is below 60 mesh.
Composition according to the resurfacing welding material shown in table 3 prepares flux-cored wire respectively according to following steps:
(1) corresponding mixture or alloy powder, in proportion mix homogeneously in meal mixer are selected according to table 3,
Obtain cover surface material powder body；
(2) with slitter, the cold-rolled strip slitting that thickness is 0.6mm～1.0mm is become the steel of wide 10mm～16mm
Band, is rolled into cross section by steel band on wire rolling mill and takes the shape of the letter U, dose mixed capping in the U-shaped groove of steel band
Material powder, is rolled into the welding wire base pipe that cross section is O shape Φ 3mm～Φ 5mm subsequently by steel band；
(3) with multi-joint linear drawing machine by welding wire base pipe drawing to finished product welding wire, a size of Φ 2.4mm～Φ 4.0mm,
Divide around index bed coiling with layer winder subsequently.
The flux-cored wire prepared is used in roll evaluates its removability of slag energy, processability and crackle quick
Perception, result is as shown in table 3.Wherein, the standard that the removability of slag can be passed judgment on well: with the roll of 1. 250mm, preheating
It is incubated built-up welding after 300 DEG C, during built-up welding when rotating 3/4 circle, slag and metal welding seam automatic open, use
Power less than 20N is beaten welding slag and can be come off, and deposited metal surface does not remain macroscopic slag, i.e. judges
For removability of slag energy good (first lap is not involved in evaluation).The standard that processability is passed judgment on well: with the roll of 1. 250mm,
Being incubated built-up welding after being preheating to 300 DEG C, welding bead surfacing, without the weld defect such as load mould, pore, in the middle of welding bead
The most convex is ellipse in both sides, Qie Daoyu road, and layer is smooth with layer overlap joint or contact position weld edge, and wellability is good,
And without weld defects such as slag inclusion, undercut, incomplete fusion, pores, i.e. it is judged as that processability is good.Crack sensitivity is low
The standard passed judgment on: with the roll of 1. 250mm, is preheating to after 300 DEG C be incubated built-up welding, built-up welding length about 300mm,
After thickness is the sample of 25mm, after slow cooling to room temperature, through magnetic powder, dye penetrant inspection surface flawless；Through ultrasound wave
The internal flawless of flaw detection, is i.e. judged as that the crack sensitivity of this resurfacing welding material is low.
Core wire component ratio (total amount is 1000g) in table 3 flux-cored wire
Claims (7)
1. one kind high titanium height niobium submerged-arc overlaying welding flux-cored wire, it is characterised in that the core wire of this flux-cored wire include with
Lower composition: alloying component, the first activating agent, the second activating agent, wherein, the first activating agent is magnesium oxide, silico-calcium
Barium aluminium alloy and calcium fluoride, Task-size Controlling is below 80 mesh；Second activating agent is cerium oxide, Erbia, silicic acid
Manganese, Potassium borofluoride, potassium carbonate and the sinter of KP1；Ti, Nb, V in the deposited metal of this flux-cored wire
Content be: Ti 1.8～4.0wt%, Nb 0.8～3.0wt%, V 1.0～6.0wt%.
High titanium height niobium submerged-arc overlaying welding flux-cored wire the most according to claim 1, it is characterised in that described
In one activating agent, the weight/mass percentage composition of each component is respectively as follows: magnesium oxide 10～80%, Si-Ca-Ba aluminium alloy 0～50%,
Calcium fluoride 10～90%.
High titanium height niobium submerged-arc overlaying welding flux-cored wire the most according to claim 1, it is characterised in that described
In the raw materials for sintering of two activating agents, the quality proportioning between each component is: potassium carbonate 10～46%, manganous silicate 8～60%,
Cerium oxide 0～37%, Erbia 0～10%, Potassium borofluoride 0～24%, KP1 20～25%.
High titanium height niobium submerged-arc overlaying welding flux-cored wire the most according to claim 1, it is characterised in that described potassium
The modulus of waterglass is 3, and ripple magnesium degree is 40 ° of B é.
High titanium height niobium submerged-arc overlaying welding flux-cored wire the most according to claim 1, it is characterised in that described
The total amount of one activating agent and the second activating agent accounts for the 8～36% of whole core wire quality.
High titanium height niobium submerged-arc overlaying welding flux-cored wire the most according to claim 1, it is characterised in that described height
The activity coefficient of titanium height niobium submerged-arc overlaying welding flux-cored wire is 30%.
7. a preparation method for the high titanium height niobium submerged-arc overlaying welding flux-cored wire described in claim 1, its feature exists
In, comprise the following steps:
(1) prepare core wire raw material, the Task-size Controlling of alloy raw material below 60 mesh, the granularity control of the first activating agent
System is below 80 mesh；
(2) sintering after each component mixing corresponding for the second activating agent, sintering temperature is 150 DEG C, and sintering time is about
2h, the material after sintering carries out break process, and Task-size Controlling is below 60 mesh；
(3) alloy raw material is loaded in steel band with the first activating agent and the second activating agent mix homogeneously, make heap
Weldering flux-cored wire.
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| CN201410504391.0A CN104384745B (en) | 2014-09-26 | 2014-09-26 | A kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire and preparation method thereof |
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| CN201410504391.0A CN104384745B (en) | 2014-09-26 | 2014-09-26 | A kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire and preparation method thereof |
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| CN114571136A (en) * | 2019-12-17 | 2022-06-03 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
| US20230097681A1 (en) * | 2021-09-27 | 2023-03-30 | Scm Metal Products, Inc. | Composite Cored Wire Cladding |
| CN113770591B (en) * | 2021-10-13 | 2023-01-31 | 北京金威焊材有限公司 | Flux-cored wire for welding stainless steel used in high-temperature environment |
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| JPS6390388A (en) * | 1986-10-01 | 1988-04-21 | Kobe Steel Ltd | Flux cored wire for welding multiple tube and its manufacture |
| CN100357058C (en) * | 2005-06-10 | 2007-12-26 | 北京工业大学 | Pile up welding cored electrode for shield tool bit cutting edge |
| US8124007B2 (en) * | 2006-02-16 | 2012-02-28 | Stoody Company | Stainless steel weld overlays with enhanced wear resistance |
| CN100462188C (en) * | 2007-07-16 | 2009-02-18 | 李淑华 | Self-protecting flux-cored wire for overlaying welding and use thereof |
| CN103418940B (en) * | 2012-05-23 | 2015-05-27 | 中冶焊接科技有限公司 | Flux-cored wire for titanium- or niobium-contained austenitic stainless steel welding |
| CN103240539B (en) * | 2013-05-13 | 2015-09-09 | 王井丽 | A kind of flux-cored wire and application thereof with high-wearing feature |
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Address after: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee after: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group Patentee after: LIAONING MINSHENG RUBBER AND PLASTIC MACHINERY Co.,Ltd. Address before: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee before: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group Patentee before: LIAONING MINSHENG HEAVY INDUSTRY Co.,Ltd. |