CN106271206A - A kind of high alkalinity slag nickel base alloy covered electrode and preparation method thereof - Google Patents
A kind of high alkalinity slag nickel base alloy covered electrode and preparation method thereof Download PDFInfo
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- CN106271206A CN106271206A CN201610806566.2A CN201610806566A CN106271206A CN 106271206 A CN106271206 A CN 106271206A CN 201610806566 A CN201610806566 A CN 201610806566A CN 106271206 A CN106271206 A CN 106271206A
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- high alkalinity
- base alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3066—Fe as the principal constituent with Ni as next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
-
- 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
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/365—Selection of non-metallic compositions of coating 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
- B23K35/404—Coated rods; Coated electrodes
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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 alkalinity slag nickel base alloy covered electrode and preparation method thereof, the slag that the high alkalinity coating welding using multiple carbonate and villiaumite alkalescence slag making material to be formed is formed has good anti-oxidation protection effect to Ni-based molten pool metal；Simultaneously replace part calcium carbonate with brium carbonate, barium fluoride replaces partially fluorinated sodium, can significantly reduce again single calcium carbonate and single calcium fluoride too high amount causes the excessive surface tension of molten slag, have preferable slag and liquid state molten pool is covered uniformity.Use Potassium borofluoride as coating additive, utilize its water absorption to be dispersed in powder to improve the extrusion performance of coating, and close the pore of blocking surface and inside after solidification, thus reach strengthen coating intensity and improve the beneficial effect of electrode coating surface smoothness.
Description
Technical field
The present invention relates to a kind of high alkalinity slag nickel base alloy covered electrode and preparation method thereof, be specifically related to a kind of Inconel
625 type alloy welding high alkalinity slag nickel base alloy covered electrodes, belong to special welding field of material technology.
Background technology
It is harsh that Inconel 625 type nickel-base alloy has superpower low-temperature flexibility, distinctive resisting high-concentration chloride media
The performance that other alloys such as condition corrosion resistance can not be substituted, is widely used in petrochemical industry Process Equipment and the energy, marine industry
The manufacture of LNG storage cryogenic system.
The welding of Inconel 625 type alloy, particularly welding rod arc welding method is by high-temperature heating and coating slag smelting
The impact of gold effect, the Ni-based Weld Performance often making formation is impaired, it is difficult to meet the excellent properties that base metals is had.For
Solve the technical barrier that in this alloy engineer applied, SMAW is faced, be badly in need of developing its supporting welding rod special for special.
Nickel-base welding rod welding easily causes slag to cover the defective workmanships such as molten pool metal is incomplete with weld seam dry slag, slag.
" the nuclear-power nickel-base electrode coating of a kind of lime-titania type and preparation method thereof " of Patent No. 201210282463.2 discloses one
The nickel-base welding rod of lime-titania type.Although solving the appearance of weld problems such as face of weld fineness, but the slag that electrode coating is formed
For acidity, it is impossible to meet nickelic molten pool metal high-temperature oxydation well and obtain super-low sulfur, the requirement of phosphorus Ni-based weld metal.
Chinese invention patent number is " the core level nickel-base welding rod core wire of a kind of basic slag system, the coating of 201210282726.X
And welding rod and preparation method, although disclose the nickel-base welding rod coating composition of a kind of basic slag system, but its cover alkalinity of medicine is main
CaCO by volume3And CaF2Ensured.Although to some extent solving oxidation and the suppression weld seam of nickelic molten pool metal
The problems such as metal sulfurizing, phosphorus, but still not can effectively solve the problem that slag uniform fold molten bath, slag are mutual with nickelic weld metal
The defective workmanships such as bonding.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of high alkalinity slag nickel base alloy covered electrode.
Technical scheme: for solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of high alkalinity slag nickel base alloy covered electrode, including core wire and coating, it is characterised in that, coating include coating powder and
Binding agent, the 20-25% that addition quality is solid constituent quality of binding agent；
Described coating powder includes the raw material of following mass percent: CaCO3: 35-45%、BaCO3: 7-11%、CaF2: 25-
35%、BaF2: 2-8%、Ti-Fe: 4-6%、Mn: 3-5%、Si-Fe: 4-6%、SiO2: 3-6%、Al2O3: 3-4%、K2TiO3:
3-8%、Cr: 3-4%、Ni: 2-6%、KBFO4: 1-3%、CMC: 1-2%。
This coating uses multiple carbonate and villiaumite alkalescence slag making material composition electrode coating, and the high alkalinity that welding is formed melts
Slag has good anti-oxidation protection effect to Ni-based molten pool metal, takes with brium carbonate replacement part calcium carbonate, barium fluoride simultaneously
For partially fluorinated sodium, single calcium carbonate can be significantly reduced again and the too high surface causing molten slag excessive of single calcium fluoride is opened
Power, has preferable slag and liquid state molten pool is covered uniformity.
Described high alkalinity slag nickel base alloy covered electrode, it is characterised in that: the Ti-Fe in coating powder is: Ti:25-
35%、Al≤8.0%、Si≤4.5%、S≤0.03%、P≤0.05%、C≤0.10%、Mn≤2.5%。
Described high alkalinity slag nickel base alloy covered electrode, it is characterised in that: the Si-Fe in coating powder is: Si:40-
47%、Mn≤0.7%、Cr≤0.5%、S≤0.02%、P≤0.04%。
Described high alkalinity slag nickel base alloy covered electrode, it is characterised in that: the satisfied following requirement of described core wire composition: C≤
0.09%、Mn: 6-10%、Fe≤10%、Si≤0.8%、Cu≤0.5%、Ni≥65%、Ti≤1.0%、Cr:14-17%、Nb:2-4%、
S≤0.015%、P≤0.020%。
Preferably, described binding agent be potassium sodium be 41-43 Be than for 1:1, modulus M=3.1, Baume concentration
Potassium-sodium water glass.
The preparation method of above-mentioned high alkalinity slag nickel base alloy covered electrode, comprises the following steps:
1) after each raw material mixes in proportion in coating powder component, mixed powder is made,
2) in mixed powder, then add binding agent, after stirring, make the coating paint with certain viscosity；
3) prepared coating paint is uniformly wrapped in core wire surface on electrode extrusion press, then after drying, baking, i.e.
?.
Preferably, described drying temperature is 100 ~ 120 DEG C, and stoving temperature is 360 ~ 380 DEG C.
Beneficial effect: a kind of high alkalinity slag nickel base alloy covered electrode that the present invention provides, uses multiple carbonate and villiaumite
Alkalescence slag making material composition electrode coating, the high alkalinity slag that welding is formed has good antioxidation to Ni-based molten pool metal to be protected
Protect effect, replace part calcium carbonate, the barium fluoride partially fluorinated sodium of replacement with brium carbonate simultaneously, single calcium carbonate can be significantly reduced again
And the single too high surface tension causing molten slag excessive of calcium fluoride, there is preferable slag liquid state molten pool is covered uniformly
Property.Cause that electrode coating intensity is the highest, the crude defect in surface for solving high alkalinity slag making powder viscosity deficiency in welding rod is suppressed,
Use Potassium borofluoride as coating additive.Utilize its water absorption to be dispersed in powder to improve the extrusion performance of coating.But
The high temperature of 360～380 DEG C behind dries during accompanying, owing to its fusing point is only 350 DEG C it is thus possible at coating inner molten stream
Dynamic, solidification rear enclosed blocking surface and the pore of inside, play the effect of binding agent.Thus can be by tight for other powder in coating
Close bonding reaches strengthen coating intensity and improve the beneficial effect of electrode coating surface smoothness.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1: the high alkalinity slag nickel-base welding rod of this embodiment, coating composition is as follows: CaCO3: 35%、BaCO3:
11%、CaF2: 35%、BaF2: 2%、Ti-Fe: 6%、Mn: 5%、Si-Fe: 4%、SiO2: 3%、Al2O3: 4%、K2TiO3:
8%、Cr: 3%、Ni: 2%、KBFO4: 1%、CMC: 1%。
Being dry mixed by the powder being mixed to get, being subsequently adding potassium sodium is 41-than for 1:1, modulus M=3.1, Baume concentration
The potassium-sodium water glass of 43 Be continues stirring, is fabricated to coating paint.Then by the coating paint after stirring at 25 tons of welding rod oil
It is evenly coated on press on core wire, suppresses the welding rod of diameter 4.0mm with the mould footpath of diameter 6.4mm.Afterwards by compressing weldering
Bar is re-fed into high temperature drying stove after 120 DEG C × 2h oven drying at low temperature to carry out 380 DEG C × 1h and bakees and i.e. obtain the weldering of embodiment 1
Bar.
Embodiment 2: the high alkalinity slag nickel-base welding rod of this embodiment, coating composition is as follows: CaCO3: 40%、BaCO3:
9%、CaF2: 30%、BaF2: 4%、Ti-Fe: 5%、Mn: 4%、Si-Fe: 5%、SiO2: 4.5%、Al2O3: 3.5%、K2TiO3:
5.5%、Cr: 3.5%、Ni: 4%、KBFO4: 1.5%、CMC: 1.5%。
Being dry mixed by the powder being mixed to get, being subsequently adding potassium sodium is 41-than for 1:1, modulus M=3.1, Baume concentration
The potassium-sodium water glass of 43 Be continues stirring, is fabricated to coating paint.Then by the coating paint after stirring at 25 tons of welding rod oil
It is evenly coated on press on core wire, suppresses the welding rod of diameter 4.0mm with the mould footpath of diameter 6.4mm.Afterwards by compressing weldering
Bar is re-fed into high temperature drying stove after 120 DEG C × 2h oven drying at low temperature to carry out 380 DEG C × 1h and bakees and i.e. obtain the weldering of embodiment 2
Bar.
Embodiment 3: the high alkalinity slag nickel-base welding rod of this embodiment, coating composition is as follows: CaCO3: 45%、BaCO3:
7%、CaF2: 25%、BaF2: 8%、Ti-Fe: 4%、Mn: 3%、Si-Fe: 6%、SiO2: 6%、Al2O3: 3%、K2TiO3: 3%、
Cr: 4%、Ni: 6%、KBFO4: 3%、CMC: 2%
Being dry mixed by the powder being mixed to get, being subsequently adding potassium sodium is 41-43 Be than for 1:1, modulus M=3.1, Baume concentration
Potassium-sodium water glass continue stirring, be fabricated to coating paint.Then by the coating paint after stirring on 25 tons of welding rod hydraulic presses
It is evenly coated on core wire, suppresses the welding rod of diameter 4.0mm with the mould footpath of diameter 6.4mm.Afterwards compressing welding rod is passed through
It is re-fed into high temperature drying stove after 120 DEG C × 2h oven drying at low temperature to carry out 380 DEG C × 1h and bakee and i.e. obtain the welding rod of embodiment 3.
Experiment proves: it is uniform that the high alkalinity coating nickel-base welding rod slag of embodiment 1 to embodiment 3 covers liquid state molten pool, weldering
Seam surface light, shows that weld seam oxidation is the most weak.Welding process arc stability, appearance of weld are attractive in appearance simultaneously.Physicochemical property test table
Bright, deposited metal composition and mechanical property meet GB/T13814-2008 " nickel and nickel, base alloy covered electrode " standard-required, comprehensively
Performance reaches top standard.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a high alkalinity slag nickel base alloy covered electrode, including core wire and coating, it is characterised in that coating include coating powder and
Binding agent, the 20-25% that addition quality is solid constituent quality of binding agent；
Described coating powder includes the raw material of following mass percent: CaCO3: 35-45%、BaCO3: 7-11%、CaF2: 25-
35%、BaF2: 2-8%、Ti-Fe: 4-6%、Mn: 3-5%、Si-Fe: 4-6%、SiO2: 3-6%、Al2O3: 3-4%、K2TiO3:
3-8%、Cr: 3-4%、Ni: 2-6%、KBFO4: 1-3%、CMC: 1-2%。
High alkalinity slag nickel base alloy covered electrode the most according to claim 1, it is characterised in that: the Ti-Fe in coating powder
For: Ti:25-35%, Al≤8.0%, Si≤4.5%, S≤0.03%, P≤0.05%, C≤0.10%, Mn≤2.5%.
High alkalinity slag nickel base alloy covered electrode the most according to claim 1, it is characterised in that: the Si-Fe in coating powder
For: Si:40-47%, Mn≤0.7%, Cr≤0.5%, S≤0.02%, P≤0.04%.
High alkalinity slag nickel base alloy covered electrode the most according to claim 1, it is characterised in that: described core wire composition meets such as
Lower requirement: C≤0.09%, Mn:6-10%, Fe≤10%, Si≤0.8%, Cu≤0.5%, Ni >=65%, Ti≤1.0%, Cr:14-
17%、Nb:2-4%、S≤0.015%、P≤0.020%。
High alkalinity slag nickel base alloy covered electrode the most according to claim 1, it is characterised in that: described binding agent is potassium sodium
The potassium-sodium water glass that ratio is 1:1, modulus M=3.1, Baume concentration are 41-43 Be.
6. according to the preparation method of the high alkalinity slag nickel base alloy covered electrode described in any one of claim 1-5, including following step
Rapid:
1) after each raw material mixes in proportion in coating powder component, mixed powder is made,
2) in mixed powder, then add binding agent, after stirring, make the coating paint with certain viscosity；
3) prepared coating paint is uniformly wrapped in core wire surface on electrode extrusion press, then after drying, baking, i.e.
?.
The preparation method of high alkalinity slag nickel base alloy covered electrode the most according to claim 6, it is characterised in that: described baking
Dry temperature is 100 ~ 120 DEG C, and stoving temperature is 360 ~ 380 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106808113A (en) * | 2017-03-03 | 2017-06-09 | 四川大西洋焊接材料股份有限公司 | Ultra supercritical material C supporting welding rod of B2 steel suitable for Long-term Service under High Temperature and preparation method thereof |
| CN108568614A (en) * | 2018-04-17 | 2018-09-25 | 南京工程学院 | A kind of rubescent cracking nickel base alloy covered electrode of anti-coating and preparation method thereof |
| CN110153586A (en) * | 2019-05-27 | 2019-08-23 | 洛阳双瑞特种合金材料有限公司 | A kind of core wire is ultralow-hydrogen low, the welding rod of resistance to moisture absorption the and the preparation method of seamless flux-cored wire |
| CN113414519A (en) * | 2021-08-06 | 2021-09-21 | 四川大西洋焊接材料股份有限公司 | ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof |
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| CN106808113B (en) * | 2017-03-03 | 2019-08-06 | 四川大西洋焊接材料股份有限公司 | The mating welding rod of ultra supercritical material C B2 steel and preparation method thereof suitable for Long-term Service under High Temperature |
| CN108568614A (en) * | 2018-04-17 | 2018-09-25 | 南京工程学院 | A kind of rubescent cracking nickel base alloy covered electrode of anti-coating and preparation method thereof |
| CN110153586A (en) * | 2019-05-27 | 2019-08-23 | 洛阳双瑞特种合金材料有限公司 | A kind of core wire is ultralow-hydrogen low, the welding rod of resistance to moisture absorption the and the preparation method of seamless flux-cored wire |
| CN110153586B (en) * | 2019-05-27 | 2021-07-02 | 中国船舶重工集团公司第七二五研究所 | Ultralow-hydrogen moisture-absorption-resistant welding electrode with seamless flux-cored wire as core wire and preparation method thereof |
| CN113414519A (en) * | 2021-08-06 | 2021-09-21 | 四川大西洋焊接材料股份有限公司 | ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof |
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| CN106271206B (en) | 2018-06-12 |
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