CN104384745A - High-titanium high-niobium submerged arc surfacing flux-cored wire and preparation method thereof - Google Patents
High-titanium high-niobium submerged arc surfacing flux-cored wire and preparation method thereof Download PDFInfo
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- CN104384745A CN104384745A CN201410504391.0A CN201410504391A CN104384745A CN 104384745 A CN104384745 A CN 104384745A CN 201410504391 A CN201410504391 A CN 201410504391A CN 104384745 A CN104384745 A CN 104384745A
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- cored wire
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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 high-titanium high-niobium submerged arc surfacing flux-cored wire. A core wire of the flux-cored wire comprises an alloy component, a first active agent and a second active agent, wherein the first active agent is composed of magnesium oxide, silicon calcium barium aluminum alloy and calcium fluoride; the second active agent is composed of cerium oxide, erbium oxide, manganese silicate, potassium fluoborate, potassium carbonate and sinter of potash water glass; the deposited metal of the flux-cored wire contains 1.8-4.0wt% of Ti, 0.8-3.0wt% of Nb and 1.0-6.0wt% of V. A preparation method of the flux-cored wire comprises the following steps: (1) preparing a core wire raw material and controlling the particle size below 60 meshes; (2) mixing and then sintering all the components corresponding to the second active agent and crushing into materials below 60 meshes; (3) uniformly mixing the alloy component, the first active agent and the second active agent and loading into a steel belt, and preparing into the surfacing flux-cored wire. The high-titanium high-niobium submerged arc surfacing flux-cored wire has the advantages of high surfacing alloy hardness, fine grains, excellent abrasive resistance, excellent toughness, low crack sensitivity, and capability of boosting the wide application of the high-titanium niobium vanadium combined enhanced submerged arc surfacing flux-cored wire.
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 welding technology field.
Background technology
Ti, Nb, V are that strong carbon, nitride forming element, particularly TiC has very high fusing point, and hardness is the highest in MC system carbide, is hardening constituent highly desirable in hardfacing materials.TiC, NbC, VC of small and dispersed distribution play good effect to growing up of crystal grain of obstruction, and meanwhile, Ti, Nb, V can form (Ti, Nb, V) N or (Ti, Nb, V) (N, C) with the nitrogen be dissolved in welding pool.These particles all can stop growing up of the generation of the dynamic recrystallization of deformed austeaite and austenite recrystallization crystal grain, and crystal grain thinning, plays the effect of refined crystalline strengthening.Therefore Ti, Nb, V become the first-selection that high-performance resurfacing welding material obtains excellent mechanical property.
But in submerged arc overlay welding process, need solder flux to carry out the protection of molten bath and welding bead, solder flux at high temperature melts, molten slag with just react at the weld face of crystallization, until when slag solidifies.The product of reaction forms layer oxide film on the metal surface, and this layer of oxide-film comes off to skull under certain condition and play conclusive effect.When there is the elements such as a fairly large number of Cr, Ti, Nb, V in flux-cored wire, when welding bead temperature is greater than 800 DEG C, the diffusion coefficient of metal ion is larger than the diffusion coefficient of oxygen, and oxide-film will the oxide of these elements of enrichment, causes de-slag difficulty.The lattice dimensions of these oxides TiO, NbO is general all more close than the lattice dimensions of FeO and α-Fe simultaneously, causes deslag performance poorer.Simultaneously TI, Nb, V high temperature oxidation stability is strong, and the oxide quantity therefore formed in weld deposit process is many, cause the shaping spreadability of welding bead and wellability bad.Therefore, the deslag performance how improving the bead welding wire of high Ti, Nb, V strengthening has become to produce the active demand of high-performance bead welding wire.
Summary of the invention
For the shortcoming that high Ti, Nb, V submerged arc overlay welding alloy and the removability of slag, mouldability at present with excellent mechanical property can not be taken into account, the object of the present invention is to provide a kind of submerged-arc overlaying welding flux-cored wire with the high titanium niobium vanadium strengthening of excellent deslag performance and processability.
Another object of the present invention is to the preparation method that a kind of described high titanium height niobium submerged-arc overlaying welding flux-cored wire is provided.
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 comprises following composition: alloying component, the first activating agent, the second activating agent, and wherein, the first activating agent is magnesia, Si-Ca-Ba aluminium alloy and calcirm-fluoride, and Task-size Controlling is below 80 orders; Second activating agent is the sinter of cerium oxide, erbium oxide, manganous silicate, potassium fluoborate, potash and KP1; In the deposited metal of this flux-cored wire, the content of Ti, Nb, V is: Ti1.8 ~ 4.0wt%, Nb 0.8 ~ 3.0wt%, V 1.0 ~ 6.0wt%.
In high titanium height niobium submerged-arc overlaying welding flux-cored wire of the present invention, select alloying component according to the specific requirement of built-up welding deposited metal composition, mainly comprise chromium, carbon, manganese, silicon, iron, titanium, niobium, vanadium etc.
Activating agent is added in high titanium height niobium submerged-arc overlaying welding flux-cored wire of the present invention, wherein add shaping, wellability for adjusting welding bead and the part of the first activating agent are removed and are mingled with, prevent the oxide generating One's name is legion at weld face, avoid slag to produce the minerals of extension symbiosis at face of weld.Second activating agent, for adjusting the activity of slag, is beneficial to de-slag, has effects such as improving welding bead is shaping, wellability simultaneously.
Preferably, in described first activating agent, the mass percentage of each component is respectively: magnesia 10 ~ 80%, Si-Ca-Ba aluminium alloy 0 ~ 50%, calcirm-fluoride 10 ~ 90%.
Preferably, the proportioning in the raw materials for sintering of described second activating agent between each component is: potash 10 ~ 46%, manganous silicate 8 ~ 60%, cerium oxide 0 ~ 37%, erbium oxide 0 ~ 10%, potassium fluoborate 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 8 ~ 36% of whole core wire.
For ensureing the content of Ti, Nb, V in flux-cored wire, the activity coefficient that flux-cored wire of the present invention adopts is 30%.
A preparation method for 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 is below 60 orders, and the Task-size Controlling of the first activating agent is below 80 orders;
(2) by sintering after each component mixing corresponding for the second activating agent, sintering temperature is 150 DEG C, and sintering time is about 2h, and the material after sintering carries out break process, and Task-size Controlling is below 60 orders;
(3) alloy raw material is mixed with the first activating agent and the second activating agent load in steel band, make flux-cored welding wire for overlaying welding.
The making of flux-cored wire belongs to industrial mature technology, its principle is: buy the thin steel band of the special mild steel of flux-cored wire, thin steel band rolled into semi-circular shape as U-shaped etc. with special equipment, alloy powder is added formation core wire, rolling is sealed, define the very long very thin metal tube being surrounded by core wire, then through rolling or cold drawing, form the flux-cored wire finished product that diameter is Φ 2.4mm ~ Φ 4mm.
The invention has the advantages 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, and the combined reinforced submerged arc overlay welding welding wire of high titanium niobium vanadium can be impelled to be widely used.
Welding wire of the present invention has the good removability of slag and mouldability; simultaneously because the titanium niobium vanadium adding One's name is legion in core wire is conducive to grain refinement (crystal grain obtained in the present invention is generally less than 30 μm); grain refinement is conducive to the raising of resurfacing welding material toughness and tenacity and mechanical property; can be used for large diameter backing roll, working roll, hot roll, coal-grinding roller, blade, breaker roll, the first-class product of crusher hammer Bead weld repair and protect in advance, both can be used as cushion and also can be used 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
Mixed in proportion by the material of the first activating agent, Task-size Controlling is below 80 orders.Wherein magnesian content is 10 ~ 80%, and the content of Si-Ca-Ba aluminium alloy is 0 ~ 50%, and the content of calcirm-fluoride is 10 ~ 90%, and typical ratio is as shown in table 1:
The proportionate relationship (gross weight is 1000g) of table 1 first activating agent composition
| Embodiment | Magnesia | Si-Ca-Ba aluminium alloy | Calcirm-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
The raw materials for sintering of the second activating agent is mixed in proportion, wherein the content of potash is 10 ~ 46%, the content of manganous silicate is 8 ~ 60%, the content of cerium oxide is 0 ~ 37%, the content of erbium oxide is 0 ~ 10%, the content of potassium fluoborate 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 | Potash | Manganous silicate | Potassium fluoborate | Cerium oxide | Erbium oxide | 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), sinter after stirring after the ratio mixing in table 2, sintering temperature is 150 DEG C, and sintering time about 2 hours, is then crushed to below 60 orders.
3, the relation of flux-cored wire alloying component and the first activating agent, 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 adopts is 30%, wherein in ferrotianium, Ti content is 25 ~ 30%, in ferro-niobium, content of niobium is 60 ~ 65%, in vanadium iron, content of vanadium is 48 ~ 53%, by theory calculate, draw the addition of ferrotianium in flux-cored wire, ferro-niobium, vanadium iron.Get the first activating agent and the second activating agent in proportion, wherein, the total amount of the first activating agent and the second activating agent accounts for 8 ~ 36% of core wire total amount simultaneously.The typical ratio of 1000g flux-cored wire alloyed powder is shown in Table 3, and other alloy raw material is mainly chromium, carbon, manganese, silicon, iron etc., and the Task-size Controlling of alloy raw material is below 60 orders.
Composition according to the resurfacing welding material shown in table 3 prepares flux-cored wire respectively according to following steps:
(1) select corresponding mixture or alloy powder according to table 3, mix in meal mixer in proportion, obtain cover surface material powder;
(2) steel band of wide 10mm ~ 16mm is become with the cold-rolled strip slitting that thickness is 0.6mm ~ 1.0mm by slitter, steel band is rolled into cross section by wire rolling mill take the shape of the letter U, in the U-shaped groove of steel band, dose mixed cover surface material powder, subsequently steel band is rolled into the welding wire base pipe that cross section is O shape Φ 3mm ~ Φ 5mm;
(3) with multi-joint linear drawing machine by welding wire base pipe drawing to finished product welding wire, be of a size of Φ 2.4mm ~ Φ 4.0mm, divide around index bed coiling with layer winder subsequently.
Be used for evaluating its deslag performance, processability and crack sensitivity in roll by the flux-cored wire prepared, result is as shown in table 3.Wherein, the standard that deslag performance is passed judgment on well: with the roll of 1. 250mm, built-up welding is incubated after being preheating to 300 DEG C, during built-up welding when rotation 3/4 is enclosed, slag and metal welding seam automatic open, adopt the power being less than 20N to beat welding slag can come off, and the not residual macroscopic slag in deposited metal surface, be namely judged as deslag performance good (first lap does not participate in evaluation).The standard that processability is passed judgment on well: with the roll of 1. 250mm, built-up welding is incubated after being preheating to 300 DEG C, welding bead surfacing, without the weld defect such as load mould, pore, slightly convex in the middle of welding bead is ellipse in both sides, Qie Daoyu road, layer with layer overlap or contact position weld edge smooth, wellability is good, and without weld defects such as slag inclusion, undercut, incomplete fusion, pores, is namely judged as that processability is good.The standard of the low judge of crack sensitivity: with the roll of 1. 250mm, be incubated built-up welding after being preheating to 300 DEG C, built-up welding length is about 300mm, and thickness is after the sample of 25mm, after slow cooling to room temperature, through magnetic, dye penetrant inspection surface flawless; Through the inner flawless of ultrasonic examination, be namely 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 characterized in that, the core wire of this flux-cored wire comprises following composition: alloying component, the first activating agent, the second activating agent, wherein, first activating agent is magnesia, Si-Ca-Ba aluminium alloy and calcirm-fluoride, and Task-size Controlling is below 80 orders; Second activating agent is the sinter of cerium oxide, erbium oxide, manganous silicate, potassium fluoborate, potash 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%.
2. high titanium height niobium submerged-arc overlaying welding flux-cored wire according to claim 1, it is characterized in that, in described first activating agent, the mass percentage of each component is respectively: magnesia 10 ~ 80%, Si-Ca-Ba aluminium alloy 0 ~ 50%, calcirm-fluoride 10 ~ 90%.
3. high titanium height niobium submerged-arc overlaying welding flux-cored wire according to claim 1, it is characterized in that, proportioning in the raw materials for sintering of described second activating agent between each component is: potash 10 ~ 46%, manganous silicate 8 ~ 60%, cerium oxide 0 ~ 37%, erbium oxide 0 ~ 10%, potassium fluoborate 0 ~ 24%, KP1 20 ~ 25%.
4. high titanium height niobium submerged-arc overlaying welding flux-cored wire according to claim 1, it is characterized in that, the modulus of described KP1 is 3, and ripple magnesium degree is 40 ° of B é.
5. high titanium height niobium submerged-arc overlaying welding flux-cored wire according to claim 1, it is characterized in that, the total amount of described first activating agent and the second activating agent accounts for 8 ~ 36% of whole core wire.
6. high titanium height niobium submerged-arc overlaying welding flux-cored wire according to claim 1, is characterized in that, the activity coefficient of described high titanium height niobium submerged-arc overlaying welding flux-cored wire is 30%.
7. a preparation method for high titanium height niobium submerged-arc overlaying welding flux-cored wire according to claim 1, is characterized in that, comprise the following steps:
(1) prepare core wire raw material, the Task-size Controlling of alloy raw material is below 60 orders, and the Task-size Controlling of the first activating agent is below 80 orders;
(2) by sintering after each component mixing corresponding for the second activating agent, sintering temperature is 150 DEG C, and sintering time is about 2h, and the material after sintering carries out break process, and Task-size Controlling is below 60 orders;
(3) alloy raw material is mixed with the first activating agent and the second activating agent load in steel band, make flux-cored welding wire for overlaying welding.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883446A (en) * | 2019-12-17 | 2020-03-17 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
| CN113770591A (en) * | 2021-10-13 | 2021-12-10 | 北京金威焊材有限公司 | Flux-cored wire for welding stainless steel used in high-temperature environment |
| US20230097681A1 (en) * | 2021-09-27 | 2023-03-30 | Scm Metal Products, Inc. | Composite Cored Wire Cladding |
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| CN113770591A (en) * | 2021-10-13 | 2021-12-10 | 北京金威焊材有限公司 | Flux-cored wire for welding stainless steel used in high-temperature environment |
| 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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| CN104384745B (en) | 2016-08-24 |
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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. |
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