CN105522296A - Nickel base 625 welding wire of single-surface welding and double-surface molding argon arc backing welding without argon filling on back surface - Google Patents

Nickel base 625 welding wire of single-surface welding and double-surface molding argon arc backing welding without argon filling on back surface Download PDF

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Publication number
CN105522296A
CN105522296A CN201610089615.5A CN201610089615A CN105522296A CN 105522296 A CN105522296 A CN 105522296A CN 201610089615 A CN201610089615 A CN 201610089615A CN 105522296 A CN105522296 A CN 105522296A
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welding
welding wires
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nickel
sio
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栗卓新
王恒
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Beijing University of Technology
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Beijing University of Technology
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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
    • B23K35/3033—Ni as the principal 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
    • B23K35/40—Making wire or rods for soldering or welding
    • B23K35/406—Filled tubular wire or rods

Abstract

The invention discloses a nickel base 625 welding wire of single-surface welding and double-surface molding argon arc backing welding without argon filling on a back surface, and belongs to the technical field of material processing engineering. A nickel strip 625 skin is adopted; a flux-cored wire comprises the following components in percentage by weight: 3-12% of TiO2, 1-6% of SiO2, 0.1-3% of ZrO2, 0.1-3% of MnO2, 0.1-5% of Al2O3, 0.1-2% of MgO, 2-6% of NbO, 2-4% of Fe2O3, 15-30% of Cr, 5-15% of Mo, 3-8% of Nb, 1-6% of MoFe, 0.1-2% of Co, 0-1% of Ce, and the balance of nickel powder; and the flux-cored filling rate is 15-40%. The welding wire is used for welding a nickel base alloy pipe, is excellent in high-temperature fluidity of welding slag and welding line deposited metal, can realize single-surface welding and double-surface molding without needing argon filling on the back surface, excellent in back surface protection of welding slag and beautiful in molding of welding lines on frontal and back surfaces.

Description

Ni-based 625 welding wires of a kind of back side not single face welding and double face shaping argon arc backing weld of argon filling
Technical field
The invention belongs to Materials Processing Engineering technical field, be specifically related to Ni-based 625 welding wires of a kind of back side not single face welding and double face shaping argon arc backing weld of argon filling.
Technical background
International nickel industry research organization (INSG) and World Bureau of Metal Statistics (WBMS) report display, the nickel in the whole world produces and disappears than reducing gradually, and the demand of countries in the world to nickel increases year by year.Nickel-based alloy pipe, because of mechanical behavior under high temperature, the resistance to high temperature corrosion ability of its excellence, is widely used in the industries such as nuclear power, offshore oil production, shipbuilding metallurgy.Inconel625 (Ni-Cr-Mo-Nb) compo pipe is a kind of nickel base superalloy with excellent anticorrosive, has the manufacture certification of wall temperature at the pressure vessel of ﹣ 196 ~ 450 DEG C, is that the world today uses one of the widest a kind of nickel-base alloy.
The welding of nickel-based alloy pipe is the difficult point in Nickel-based Alloy Welding.China is poor nickel country, and the buying of Ni-based pipeline is very difficult, needs a large amount of import and price is very expensive, adds and is imported material, and surplus of not constructing, therefore, the welding of nickel-based alloy pipe must ensure that 100% is once qualified.At present, Ni-based 625 compo pipes generally adopt argon tungsten-arc welding (TIG) bottoming to add back side argon filling technique in welding process, but it is large, expensive to there is argon gas consumption, the air displacement in pipe thoroughly time very easily cause the unstable and argon filling of welding quality problem such as performance difficulty under some particular surroundings.Therefore, develop the excellent and back side can reach one side welding with back formation effect without the need to argon filling Ni-based 625 welding wires of a kind of welding technological properties to have great importance.
The present invention is exclusively used in Ni-based 625 welding wires of the back side not single face welding and double face shaping of argon filling under have developed the protective gas condition of a kind of pure Ar; it is applicable to Ni-based 625 compo pipes, plate single welding or bottoming welding; meet the requirement of ENiCrMo3T in AWSA5.34; welding procedure is excellent; welding slag mobility is splendid, and the welding process back side can reach one side welding with back formation effect without the need to argon filling and appearance of weld is attractive in appearance.
Summary of the invention
The object of the invention is to solve prior art problem, provide a kind of and be applicable to nickel-based alloy pipe, plate welds, the back side can reach one side welding with back formation effect without the need to argon filling and Ni-based 625 welding wires of the all-position welding that appearance of weld is attractive in appearance, welding procedure is excellent.
Ni-based 625 welding wires of a kind of back side not single face welding and double face shaping argon arc backing weld of argon filling, it is characterized in that, when adopting nickel strap 625 as clad, the preferred width of nickel strap is: 8-12mm, the thickness of nickel strap is 0.2-0.9mm, and concrete component requirements is with reference to national standard " GB/T2072-2007 Ni-based ultrafine powder band "; The component of medicine core and percentage by weight thereof are: TiO 2: 3-12%, SiO 2: 1-6%, ZrO 2: 0.1-3%, MnO 2: 0.1-3%, Al 2o 3: 0.1-5%, MgO:0.1-2%, NbO:2-6%; Fe 2o 3: 2-4%, Cr:15-30%, Mo:5-15%, Nb:3-8%, MoFe:1-6%, Co:0-2%, Ce:0-1%, surplus is nickel powder and inevitable impurity, and the filling rate in flux-cored wire is 15-40%.
Further, TiO in medicinal powder 2content be less than 10%, SiO 2content be greater than 2%, ZrO 2between 0.5-2.8%, MnO 2between 0.5-2.8%, the content of Ce is between 0-0.8%.
Further, TiO 2/ ZrO 2mass ratio between 2.3-3.3, SiO 2/ ZrO 2mass ratio between 0.9-1.5, (TiO 2+ SiO 2+ ZrO 2)/MnO 2mass ratio between 5-13, NbO/Fe 2o 3mass ratio between 0.9-1.6.
Further, in welding wire, the content of impurity S controls below 0.005%, and the content of P controls below 0.015%, and the quality of S+P is between 0.005-0.02%, and the content of Fe controls below 2.5%.
Further, TiO 2with ZrO 2mass ratio control between 2.3-3.3, SiO 2with ZrO 2mass ratio control between 0.9-1.5, (TiO 2+ SiO 2+ ZrO 2) and MnO 2mass ratio control between 5-13, slag has good back-protective, and sealing run be shaped attractive in appearance.
Further, NbO/Fe 2o 3mass ratio control between 0.9-1.6, the weld metal removability of slag is good.
Further, add 3-7% element nb, the surface tension of weld seam slag is little, and weld seam molten bath temperature flowing is good.
Further, in deposited metal Al quality control in 0.01-1%, Ti quality control between 0.01-2%, the forming of weld metal front.
Further, add 0-0.8% rare earth element ce, and in deposited metal, the mass ratio of Ce/ (S+P) controls between 0.1-6, improves weld metal liquid fluidity, reduce fire check sensitiveness.
Wherein, described TiO 2add with the form of rutile or titanium dioxide; Described SiO 2add with the form of quartz or feldspar; Described ZrO 2add with zircon sand or chemical pure form; Described MnO 2add with the form of chemical pure or manganese ore; Described NbO adds with chemical pure form; Described Mo adds with the form of simple metal and molybdenum-iron, and described Co adds with the form of simple metal, and described Ce adds (with CeO with the form of compound 2form add).
Ni-based 625 welding wires as above, wherein said nickel strap is preferably containing the higher nickel strap 625 of molybdenum amount, and welding wire of the present invention adopts conventional welding wire technology of preparing to obtain.
The preparation method of Ni-based 625 welding wires as mentioned above, is characterized in that, comprise the following steps:
Width is selected to be 8 ~ 12mm, thickness is the crust of nickel strap 625 as welding wire of 0.2 ~ 0.9mm, and be rolled into U-type groove and insert above-mentioned medicinal powder, medicinal powder weight is the 15-40% of welding wire weight, after U-type groove is healed up, successively by the wire drawing die of different-diameter, by road drawing, tube reducing, and cleaning is carried out to the surface of welding wire obtain welding wire finished product, its diameter is 2.0-2.4mm.
The component of described welding wire medicine core is as follows:
Ni: stable and promotion austenite former, can improve the elevated temperature strength of nickel-base alloy, creep-resistant property and high-temperature behavior.
Cr: stable carbide forming element, Main Function is the non-oxidizability and the corrosion resistance that improve steel.
Mo: solution strengthening element, improves weld metal elevated temperature strength.Meanwhile, Mo also has the effect reducing alloy thermal coefficient of expansion.
Nb: solution strengthening element, improves the croop property of weld metal.Meanwhile, Nb can substitute Ti, thus improves weld seam molten bath mobility.
TiO 2: slag making, improves appearance of weld.But Ti element is too much, weld seam molten bath mobility is caused to be deteriorated.
SiO 2: stabilising arc, slag making, gas making, improve arc stability.
ZrO 2: stabilising arc, slag making, reduce and splash, improve arc stability.
NbO: the removability of slag improving weld metal.
Fe 2o 3: the removability of slag improving weld metal.
Mn: stable and promotion austenitic formation, can improve the intensity of deposited metal, can increase the solubility of nitrogen in deposited metal, thus play the effect of stable austenite.Meanwhile, manganese also has deoxidation and thiopectic effect, and manganese and sulphur form the high MnS of fusing point, can prevent the formation of FeS, thus reduces nickel-base alloy fire check sensitiveness.Course of reaction is: MnO 2→ Mn+O 2, Si+O 2→ SiO 2, Mn+S → MnS.
Al: strong deoxidation, nitrogen killer, in welding process, the deoxidation fixed nitrogen of aluminium reacts the oxygen can eliminated in air, nitrogen to the infringement in molten drop molten bath, effectively eliminates pore.
Mg: improve phase stability, suppresses the generation of the low-melting compounds such as P, S, Si, and reduce fire check sensitiveness, mechanism of action is Mg+S → MgS.
Co: crystal grain thinning, reduces overheated tendentiousness, has certain decarbonization.
Ce: rare earth element, crystal grain thinning, suppresses the generation of the low-melting compounds such as S, P, improves weld metal heat resistanceheat resistant anti-thread breakage.
Ni-based 625 welding wires of a kind of nickel-based alloy pipe of the present invention's development, plate single welding or bottoming welding, are applicable to the welding of high temperature under the protective gas condition of pure Ar, strong corrosive environment.The back side can reach one side welding with back formation effect without the need to argon filling and appearance of weld is attractive in appearance, welding procedure is excellent.
Detailed description of the invention
Below by detailed description of the invention, the invention will be further described, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 10 × 0.4mm to be crust (composition is as shown in table 1), filling rate 22.5%, gage of wire 2.0mm.The chemical composition (% by weight) of medicine core is: TiO 2: 3.0%, SiO 2: 2.0%, ZrO 2: 1.7%, MnO 2: 0.9%, Al 2o 3: 2.2%, MgO:0.3%, NbO:2.0%; Fe 2o 3: 4.0%, Cr:21.4%, Mo:8.2%, Nb:1.9%, MoFe:3.0%, Co:0.4%, Ce:0.3%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 90-110A.
Embodiment 2
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 12 × 0.5mm to be crust (composition is as shown in table 1), filling rate 30%, gage of wire 2.4mm.The chemical composition (% by weight) of medicine core is: TiO 2: 4.2%, SiO 2: 0.9%, ZrO 2: 1.5%, MnO 2: 0.9%, Al 2o 3: 3.0%, MgO:0.3%, NbO:2.4%; Fe 2o 3: 4.0%, Cr:20.5%, Mo:8.2%, Nb:2.3%, MoFe:2.7%, Co:0.5%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 120-150A.
Embodiment 3
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 8 × 0.3mm to be crust (composition is as shown in table 1), filling rate 18%, gage of wire 2.0mm.The chemical composition (% by weight) of medicine core is: TiO 2: 2.6%, SiO 2: 1.1%, ZrO 2: 1.0%, MnO 2: 1.1%, Al 2o 3: 0.3%, MgO:0.5%, NbO:2.8%; Fe 2o 3: 3.5%, Cr:20.4%, Mo:7.7%, Nb:6.6%, MoFe:3.0%, Co:0.5%, Ce:0.4%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 90-110A.
Embodiment 4
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 12 × 0.5mm to be crust (composition is as shown in table 1), filling rate 28%, gage of wire 2.4mm.The chemical composition (% by weight) of medicine core is: TiO 2: 4.0%, SiO 2: 1.9%, ZrO 2: 1.6%, MnO 2: 0.6%, Al 2o 3: 0.3%, MgO:0.2%, NbO:2.5%; Fe 2o 3: 2.5%, Cr:21.0%, Mo:8.0%, Nb:5.0%, MoFe:3.3%, Co:0.4%, Ce:0.2%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 120-150A.
Embodiment 5
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 12 × 0.3mm to be crust (composition is as shown in table 1), filling rate 25%, gage of wire 2.0mm.The chemical composition (% by weight) of medicine core is: TiO 2: 7.0%, SiO 2: 3.0%, ZrO 2: 2.5%, MnO 2: 1.2%, Al 2o 3: 0.2%, MgO:0.5%, NbO:4.2%; Fe 2o 3: 3.5%, Cr:19.1%, Mo:7.5%, Nb:3.0%, MoFe:2.0%, Co:0.6%, Ce:0.1%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 90-110A.
Embodiment 6
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 10 × 0.6mm to be crust (composition is as shown in table 1), filling rate 15%, gage of wire 2.4mm.The chemical composition (% by weight) of medicine core is: TiO 2: 3.0%, SiO 2: 1.3%, ZrO 2: 1.0%, MnO 2: 0.7%, Al 2o 3: 0.2%, MgO:0.2%, NbO:3.3%; Fe 2o 3: 2.2%, Cr:22.3%, Mo:8.7%, Nb:4.4%, MoFe:3.0%, Co:0.5%, Ce:0.2%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 120-150A.
Embodiment 7
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 8 × 0.2mm to be crust (composition is as shown in table 1), filling rate 35%, gage of wire 2.0mm.The chemical composition (% by weight) of medicine core is: TiO 2: 5.8%, SiO 2: 2.0%, ZrO 2: 1.5%, MnO 2: 0.9%, Al 2o 3: 2.2%, MgO:0.4%, NbO:3.0%; Fe 2o 3: 2.5%, Cr:19.5%, Mo:8.0%, Nb:2.4%, MoFe:2.8%, Co:0.5%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 90-110A.
Embodiment 8
Ni-based 625 welding wires of ENiCrMo3T for nickel-based alloy pipe welding adopt the nickel strap 625 of 12 × 0.7mm to be crust (composition is as shown in table 1), filling rate 40%, gage of wire 2.4mm.The chemical composition (% by weight) of medicine core is: TiO 2: 4.2%, SiO 2: 2.8%, ZrO 2: 1.5%, MnO 2: 0.9%, MgO:0.3%, NbO:4.2%; Fe 2o 3: 2.1%, Cr:18.8%, Mo:7.3%, Nb:7.4%, MoFe:2.0%, Co:0.4%, Ce:0.5%, surplus is nickel powder.Front adopts pure Ar as protective gas, gas flow 15-20L/min, adopts DC reverse connection method, welding current 120-150A.
The chemical composition (% by weight) of nickel strap 625 of table 1 for using in embodiment 1-8
The contrast of table 2 each embodiment medicine core composition and processing performance is as follows:
Note: k=(TiO 2+ SiO 2+ ZrO 2)/MnO 2;
◎ represents excellent, and zero represents good, and △ represents general, × represent defective.
Postwelding carries out deposited metal composition and Mechanics Performance Testing.Deposited metal composition and weld properties test result are in table 3.
The deposited metal composition of table 3 welding wire and weld properties test result:

Claims (10)

1. Ni-based 625 welding wires for the back side not single face welding and double face shaping argon arc backing weld of argon filling, is characterized in that, adopt nickel strap 625 as clad; The component of medicine core and percentage by weight thereof are: TiO 2: 3-12%, SiO 2: 1-6%, ZrO 2: 0.1-3%, MnO 2: 0.1-3%, Al 2o 3: 0.1-5%, MgO:0.1-2%, NbO:2-6%; Fe 2o 3: 2-4%, Cr:15-30%, Mo:5-15%, Nb:3-8%, MoFe:1-6%, Co:0-2%, Ce:0-1%, surplus is nickel powder and inevitable impurity, and the filling rate in flux-cored wire is 15-40%.
2., according to Ni-based 625 welding wires according to claim 1, it is characterized in that, TiO in medicinal powder 2content be less than 10%, SiO 2content be greater than 2%, ZrO 2between 0.5-2.8%, MnO 2between 0.5-2.8%, the content of Ce is between 0-0.8%.
3., according to Ni-based 625 welding wires described in claim 1 or 2, it is characterized in that, TiO 2/ ZrO 2mass ratio between 2.3-3.3; SiO 2/ ZrO 2mass ratio between 0.9-1.5; TiO 2+ SiO 2+ ZrO 2/ MnO 2mass ratio between 5-13.
4. according to Ni-based 625 welding wires according to claim 3, it is characterized in that, in welding wire, the content of impurity S controls below 0.005%, and the content of P controls below 0.015%, and the quality of S+P is between 0.005-0.02%, and the content of Fe controls below 2.5%.
5., according to Ni-based 625 welding wires described in claim 1 or 2, it is characterized in that, NbO/Fe 2o 3mass ratio between 0.9-1.6.
6., according to Ni-based 625 welding wires described in claim 1 or 2, it is characterized in that, Nb:3-7%.
7., according to Ni-based 625 welding wires described in claim 1 or 2, it is characterized in that, in deposited metal Al quality control in 0.01-1%, Ti quality control between 0.01-2%.
8. according to Ni-based 625 welding wires described in claim 1 or 2, it is characterized in that, in deposited metal, the mass ratio of Ce/ (S+P) controls between 0.1-6.
9., according to Ni-based 625 welding wires described in claim 1 or 2, it is characterized in that, described TiO 2add with the form of rutile or titanium dioxide; Described SiO 2add with the form of quartz or feldspar; Described ZrO 2add with zircon sand or chemical pure form; Described MnO 2add with the form of chemical pure or manganese ore; Described NbO adds with chemical pure form; Described Mo adds with the form of simple metal and molybdenum-iron, and described Co adds with the form of simple metal, and described Ce is with Compound C eO 2form add.
10. Ni-based 625 welding wires described in claim 1 or 2 are used for the back side not argon filling single face welding and double face shaping.
CN201610089615.5A 2016-02-17 2016-02-17 Nickel base 625 welding wire of single-surface welding and double-surface molding argon arc backing welding without argon filling on back surface Pending CN105522296A (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN106583965A (en) * 2016-12-15 2017-04-26 昆山京群焊材科技有限公司 High-strength and high-toughness flux-cored wire with low tempering parameter and used for 2.25Cr-1Mo steel
CN106736027A (en) * 2016-12-15 2017-05-31 昆山京群焊材科技有限公司 A kind of 1Cr 0.5Mo V power stations steel-casting repair welding flux-cored wire of extremely low carbon high-purity
CN110508968A (en) * 2019-09-05 2019-11-29 昆山京群焊材科技有限公司 650 DEG C of ultra supercritical coal-fired unit martensite heat-resistant steel welding rods of argon filling single face welding and double face shaping are exempted from a kind of back side
CN110773905A (en) * 2019-10-17 2020-02-11 北京奥邦新材料有限公司 Steel welding flux-cored wire for high heat input welding, preparation method and welding method thereof
CN113732560A (en) * 2021-08-23 2021-12-03 西安理工大学 Nickel-chromium-based welding wire capable of effectively controlling thermal cracking, method and groove form
CN114535859A (en) * 2022-01-11 2022-05-27 西安理工大学 Nickel-steel composite material arc 3D printing welding wire and preparation and additive manufacturing method
CN114905181A (en) * 2021-02-08 2022-08-16 株式会社神户制钢所 Flux-cored wire for gas-shielded arc welding

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EP2343149A1 (en) * 2010-01-09 2011-07-13 Kabushiki Kaisha Kobe Seiko Sho Flux-cored nickel-based alloy wire
CN105081620A (en) * 2015-09-15 2015-11-25 北京工业大学 Nickel-base 625 flux-cored wire suitable for full-position welding

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JP2000117488A (en) * 1998-08-10 2000-04-25 Kobe Steel Ltd Ni-BASED ALLOY FLUX-CORED WIRE
JP2008246507A (en) * 2007-03-29 2008-10-16 Kobe Steel Ltd Ni-based alloy flux-cored wire
EP2343149A1 (en) * 2010-01-09 2011-07-13 Kabushiki Kaisha Kobe Seiko Sho Flux-cored nickel-based alloy wire
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106583965A (en) * 2016-12-15 2017-04-26 昆山京群焊材科技有限公司 High-strength and high-toughness flux-cored wire with low tempering parameter and used for 2.25Cr-1Mo steel
CN106736027A (en) * 2016-12-15 2017-05-31 昆山京群焊材科技有限公司 A kind of 1Cr 0.5Mo V power stations steel-casting repair welding flux-cored wire of extremely low carbon high-purity
CN110508968A (en) * 2019-09-05 2019-11-29 昆山京群焊材科技有限公司 650 DEG C of ultra supercritical coal-fired unit martensite heat-resistant steel welding rods of argon filling single face welding and double face shaping are exempted from a kind of back side
CN110773905A (en) * 2019-10-17 2020-02-11 北京奥邦新材料有限公司 Steel welding flux-cored wire for high heat input welding, preparation method and welding method thereof
CN114905181A (en) * 2021-02-08 2022-08-16 株式会社神户制钢所 Flux-cored wire for gas-shielded arc welding
CN113732560A (en) * 2021-08-23 2021-12-03 西安理工大学 Nickel-chromium-based welding wire capable of effectively controlling thermal cracking, method and groove form
CN113732560B (en) * 2021-08-23 2023-03-14 西安理工大学 Nickel-chromium-based welding wire capable of effectively controlling heat cracking, method and groove form
CN114535859A (en) * 2022-01-11 2022-05-27 西安理工大学 Nickel-steel composite material arc 3D printing welding wire and preparation and additive manufacturing method
CN114535859B (en) * 2022-01-11 2023-08-08 康硕(山西)低应力制造系统技术研究院有限公司 Nickel-steel composite material arc 3D printing welding wire and preparation and additive manufacturing method

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Application publication date: 20160427