CN109693055A - Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method - Google Patents
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method Download PDFInfo
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- CN109693055A CN109693055A CN201910101496.4A CN201910101496A CN109693055A CN 109693055 A CN109693055 A CN 109693055A CN 201910101496 A CN201910101496 A CN 201910101496A CN 109693055 A CN109693055 A CN 109693055A
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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
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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
- B23K35/40—Making wire or rods for soldering or welding
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, belong to field of welding material.Its each component and shared weight percent are as follows: Ni:55~65%, Cr:20~30%, Mo:7~12%, Nb:2~5%, Re:0.01~0.10%, Si:0.05~0.20%, Mn:0.10~0.50%, Al:0.10~0.60%, Ti:0.10~0.60%, Zr 0.01~0.05%, surplus are Fe and inevitable impurity.Preparation method are as follows: alloy melting-electroslag remelting-hot forging-hot-roll annealing-mechanical descaling-drawing tube reducing-precision layer around.The preparation method of welding wire of the present invention is environmentally protective, and there is no pickling to pollute；Welding arc stablility splashes few, and appearance of weld is beautiful, and welding procedure and excellent in mechanical performance, seam organization is fine and closely woven, can fully meet the welding requirements of oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant.
Description
Technical field
The present invention relates to field of welding material, and in particular to oil-gas pipeline is welded with inner wall overlaying corrosion-and high-temp-resistant nickel alloy
Silk and preparation method.
Technical background
As the whole world is continuously increased petroleum resources demand, more and more acid-soluble oil gas fields are developed, and China is gathered around
There is the oil and gas pipeline increased year by year, has also carried out the famous oil gas Transportation Engineerings such as transfering natural gas from the west to the east, this peracidity oil
Gas field proposes severe challenge for the corrosion resistance and oil-gas pipeline welding material of oil-gas pipeline.Nickel alloy welding wire has resistance to
Activity gas, resistance to caustic medium, the superperformance of reducing resistance acid medium corrosion, using welding method in its ordinary steel inner wall heap
One layer of nickel alloy deposited metal is welded, its overlay cladding is made to have excellent high temperature resistant, corrosion resistance, acquisition has intensity, resistance to height concurrently
Warm corrosion resistance and lower-cost characteristic.
But oil-gas pipeline conveying mileage is long, it on the way can be by large stretch of desert, gobi plateau, sebkha and marshland, earthquake
Active fault and big drop area, some area day and night temperature variations are 30 DEG C reachable, and -34 DEG C of winter minimum temperature, summer earth's surface
Maximum temperature is up to 70-80 DEG C.These harsh region, weather conditions not only cause difficulty to the construction of pipeline, and to heap
It welds performance and proposes requirements at the higher level, presently commercially available nickel alloy welding wire can overcome efficient high-temperature resistant under oil-gas pipeline mal-condition corrosion-resistant
Performance requirement it is fresh few.In addition, the mode that surface scale generallys use pickling in existing nickel alloy welding wire manufacturing process removes,
But a large amount of exhaust gas, waste liquid and solid waste can be generated, surrounding enviroment are seriously polluted, while welding wire surface finish is owed
It is good, and then influence welding process wire feed and arc stability.Therefore, it researches and develops a kind of corrosion-and high-temp-resistant and welding technological properties is excellent
Different nickel alloy welding wire becomes the key that the oil and gas pipeline smoothly produces popularization.
Summary of the invention
The present invention in order to overcome the above-mentioned deficiencies of the prior art, provides oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant
Nickel alloy welding wire and preparation method.Welding wire surface oxide skin is removed using mechanical descaling, production process is environmentally protective, and there is no acid
Wash pollution.Welding arc stablility splashes few, and appearance of weld is beautiful, and welding procedure and excellent in mechanical performance, seam organization is fine and closely woven,
The welding requirements of oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant can be fully met.
To achieve the goals above, the following technical solution is employed by the present invention:
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, which is characterized in that the weldering
Each component and shared weight percent in silk are as follows: Ni:55~65%, Cr:20~30%, Mo:7~12%, Nb:2~5%, Re:
0.01~0.10%, Si:0.05~0.20%, Mn:0.10~0.50%, Al:0.10~0.60%, Ti:0.10~0.60%,
Zr 0.01~0.05%, surplus are Fe and inevitable impurity.
Further, the welding wire chinese raw materials specifically includes that metallic nickel, crome metal, metal molybdenum, metal niobium, rare-earth oxidation
Object, monocrystalline silicon, electrolytic manganese, metallic aluminium, Titanium, zirconium silicon alloy, atomized iron powder.
Further, the Re in the welding wire is Y, Ce, Er, one or more of common rare earth element such as Cs, La.
Further, in the welding wire weight content ratio of Al/Ti between 1~2.
Further, in the welding wire weight content ratio of Re/Zr between 1~3.
Further, in the welding wire weight content ratio of Mn/Si between 3~6.
Further, in the welding wire partial size of each powder between 60~100 mesh.
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, which is characterized in that including with
Lower step:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and power failure cooling time is 5~10min, takes off ingot, is cooled to room temperature, obtains alloy pig；
(3) step (2) described alloy pig hot forging: is put into heating in the heating furnace of initial temperature≤600 DEG C, heating
To 1150~1180 DEG C, 55~75min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1100~1150 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, cold
But to room temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter guarantees that silk material clean surface is smooth until silk material diameter is 1.2~2.4mm, impulse- free robustness, pit, scratch, and sharp bend knots,
Greasy dirt and other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel.
Further, when electroslag remelting, slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be
75~85%, Al2O3Weight percent be 12~18%, CaO weight percent content be 4~6%.
Further, accurate layer around rear welding wire line through tolerance be (+0.01mm, -0.04mm), relaxed diameter 600
~1000mm is stuck up away from for 0~15mm.
Mentality of designing of the invention is: by raising Cr and Ni content, the resistance to corrosion of weld metal is significantly improved, it is right
The ability of anti-spot corrosion and crevice corrosion is especially outstanding；The Al and Ti that joined specific proportion reinforce the deoxidation effect of Resistance of Weld Metal
Fruit, reduce foreign gas so that metal surface color it is bright, without slag；Be added rare earth Re element can be enhanced steel alloy physics,
Chemical property improves following process forging, steel rolling plasticity, refines crystal grain, improves the anti-corrosion of deposited metal produced by welding process
Performance.
The composition characteristic of corrosion-and high-temp-resistant nickel alloy welding wire of the invention is as follows:
Ni: austenite former, high temperature resistant, anti-oxidant, toughness to weld metal transition alloy elements, for weld seam
It plays a positive role, the intensity of weld metal can be improved without significantly reducing its toughness.
Cr: ferrite former adds in oxidation atmosphere on nickel-base alloy surface to weld metal transition alloy elements
Speed forms fine and close Cr2O3Corrosion resistant passivation film, the anti-oxidant of Resistance of Weld Metal, intensity, anti-carburizing can play a decisive role.
Mo: solution strengthening element improves weld metal elevated temperature strength, inhibits Carbon diffusion speed.
Nb: to weld metal transition alloy elements, NbC is precipitated in crystal boundary and effectively improves weld strength, filament crystal circle chromium carbide
Even dispersion distribution, postpones Carbide Coarsening, significantly improves weld metal high temperature resistance.
Re: deoxidization desulfuration element can refine field trash in weld metal, induce ferrite forming core, refine crystal grain, simultaneously
The drawing difficulty in welding wire production preparation process is reduced, weld metal high temperature resistance is improved.
Si: deoxidier improves the mobility of welding pool, and can be mentioned by the protective oxide layer that itself forms Silicon-rich
The high-temperature oxidation resistance of high boiler tube.
Mn: the harm of S, improving welding property can be eliminated with S-shaped at nodularization MnS.
Al: deoxidant element, while forming compound with Ni and improving heat resistance.
Ti: denitrogenation, carbon reduce the quantity of free nitrogen, improve impact flexibility, form TiC in crystal boundary, improve weld seam gold
Belong to intensity, reduce weld metal generate stomata, it is loose the defects of, improve the bright degree of face of weld.
Zr: strong carbon, nitride forming element and Strong oxdiative object formation element can prevent growing up for austenite grain,
ZrO is formed in conjunction with oxygen2Non-metallic inclusion, promotes ferrite forming core, and thinning microstructure improves toughness.
Fe: being added Fe in nickel-base alloy, may play certain passivation.
Compared with prior art, the invention has the following advantages:
(1) Cr and Ni content is improved, the resistance to corrosion of alloy is significantly improved, the ability for fighting spot corrosion and crevice corrosion goes out
Color；Rare earth Re element is added and refines crystal grain, improves the plasticity and high temperature resistance of alloy welding wire；Improving Mo and Si content improves conjunction
The high temperature resistance and antioxygenic property of gold；(2) vacuum metling technique is used in alloy melting, is conducive to the drop of gas content
It is low, avoid alloying element oxidization burning loss；(3) welding wire surface oxide skin is removed using mechanical descaling, production process is environmentally protective, no
There are pickling pollution, welding wire surface is bright and clean；(4) welding process wire feed and arc stability splash few, and appearance of weld is beautiful, welding
Processes and mechanical properties are excellent, and seam organization is fine and closely woven, can fully meet the weldering of oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant
Connect requirement.
Specific embodiment
Below by specific embodiment, the invention will be further described, but protection scope of the present invention is not limited to
Following embodiments.In those skilled in the art without deviating from the spirit of the invention, many variations can also be made, this
It is belonged within protection of the invention a bit.
Embodiment 1
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, in the welding wire each component and
Shared weight percent are as follows: Ni:55%, Cr:22%, Mo:10%, Nb:3%, Ce:0.10%, Si:0.10%, Mn:
0.50%, Al:0.20%, Ti:0.10%, Zr:0.05%, surplus are Fe and inevitable impurity.Each powder in the welding wire
The partial size at end is between 60~100 mesh.Specific preparation process is as follows:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 80%,
Al2O3Weight percent be 15%, CaO weight percent content be 5%, power failure cooling time is 5min, takes off ingot, cooling
To room temperature, alloy pig is obtained；
(3) hot forging: step (2) described alloy pig is put into heating in 550 DEG C of initial temperature of heating furnace, is warming up to
1180 DEG C, 75min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1150 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to often
Temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter, until silk material diameter be 1.2mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel, line is through permitting
Perhaps deviation is (+0.01mm, -0.04mm), and relaxed diameter 1000mm is stuck up away from for 0mm.
Embodiment 2
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, in the welding wire each component and
Shared weight percent are as follows: Ni:56%, Cr:20%, Mo:12%, Nb:3%, Y:0.02%, Si:0.15%, Mn:0.50%,
Al:0.50%, Ti:0.50%, Zr:0.02%, surplus are Fe and inevitable impurity.The partial size of each powder in the welding wire
Between 60~100 mesh.Specific preparation process is as follows:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 80%,
Al2O3Weight percent be 15%, CaO weight percent content be 5%, power failure cooling time is 5min, takes off ingot, cooling
To room temperature, alloy pig is obtained；
(3) hot forging: step (2) described alloy pig is put into heating in 550 DEG C of initial temperature of heating furnace, is warming up to
1180 DEG C, 75min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1150 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to often
Temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter, until silk material diameter be 1.4mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel, line is through permitting
Perhaps deviation is (+0.01mm, -0.04mm), and relaxed diameter 1000mm is stuck up away from for 0mm.
Embodiment 3
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, in the welding wire each component and
Shared weight percent are as follows: Ni:55%, Cr:30%, Mo:8%, Nb:2%, La:0.05%, Si:0.10%, Mn:0.50%,
Al:0.20%, Ti:0.10%, Zr:0.05%, surplus are Fe and inevitable impurity.The partial size of each powder in the welding wire
Between 60~100 mesh.Specific preparation process is as follows:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 80%,
Al2O3Weight percent be 15%, CaO weight percent content be 5%, power failure cooling time is 10min, takes off ingot, cooling
To room temperature, alloy pig is obtained；
(3) hot forging: step (2) described alloy pig is put into heating in 550 DEG C of initial temperature of heating furnace, is warming up to
1180 DEG C, 75min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1150 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to often
Temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter, until silk material diameter be 1.6mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel, line is through permitting
Perhaps deviation is (+0.01mm, -0.04mm), and relaxed diameter 1000mm is stuck up away from for 0mm.
Embodiment 4
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, in the welding wire each component and
Shared weight percent are as follows: Ni:58%, Cr:24%, Mo:7%, Nb:5%, Ce:0.01%, Y:0.01%；Si:0.10%,
Mn:0.30%, Al:0.60%, Ti:0.60%, Zr:0.01%, surplus are Fe and inevitable impurity.It is each in the welding wire
The partial size of powder is between 60~100 mesh.Specific preparation process is as follows:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 80%,
Al2O3Weight percent be 15%, CaO weight percent content be 5%, power failure cooling time is 10min, takes off ingot, cooling
To room temperature, alloy pig is obtained；
(3) hot forging: step (2) described alloy pig is put into heating in 550 DEG C of initial temperature of heating furnace, is warming up to
1160 DEG C, 60min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1100 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to often
Temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter, until silk material diameter be 2.0mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel, line is through permitting
Perhaps deviation is (+0.01mm, -0.04mm), and relaxed diameter 1000mm is stuck up away from for 0mm.
Embodiment 5
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, in the welding wire each component and
Shared weight percent are as follows: Ni:62%, Cr:22%, Mo:8%, Nb:2%, Cs:0.05%, Y:0.05%；Si:0.05%,
Mn:0.30%, Al:0.10%, Ti:0.10%, Zr:0.05%, surplus are Fe and inevitable impurity.It is each in the welding wire
The partial size of powder is between 60~100 mesh.Specific preparation process is as follows:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 80%,
Al2O3Weight percent be 15%, CaO weight percent content be 5%, power failure cooling time is 10min, takes off ingot, cooling
To room temperature, alloy pig is obtained；
(3) hot forging: step (2) described alloy pig is put into heating in 540 DEG C of initial temperature of heating furnace, is warming up to
1150 DEG C, 60min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1100 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to often
Temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter, until silk material diameter be 2.4mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel, line is through permitting
Perhaps deviation is (+0.01mm, -0.04mm), and relaxed diameter 1000mm is stuck up away from for 0mm.
Embodiment 6
Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, in the welding wire each component and
Shared weight percent are as follows: Ni:65%, Cr:20%, Mo:7%, Nb:2%, Er:0.10%, Si:0.05%, Mn:0.20%,
Al:0.50%, Ti:0.50%, Zr:0.04%, surplus are Fe and inevitable impurity.The partial size of each powder in the welding wire
Between 60~100 mesh.Specific preparation process is as follows:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa with
On, and pour into electrode bar；
(2) electroslag remelting: electroslag remelting equipment is used, by conduct after the surface grinding process of step (1) electrode bar
Electrode is inserted into remelting in slag, and slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 80%,
Al2O3Weight percent be 15%, CaO weight percent content be 5%, power failure cooling time is 10min, takes off ingot, cooling
To room temperature, alloy pig is obtained；
(3) hot forging: step (2) described alloy pig is put into heating in 540 DEG C of initial temperature of heating furnace, is warming up to
1160 DEG C, 75min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1150 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to often
Temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling
Processing removes surface scale, obtains bright disk circle silk material；
(6) drawing tube reducing: using existing cold-drawing process, and by the circle of bright disk described in step (5) silk material, gradually drawing subtracts
Diameter, until silk material diameter be 2.0mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel, line is through permitting
Perhaps deviation is (+0.01mm, -0.04mm), and relaxed diameter 1000mm is stuck up away from for 0mm.
Welding wire in Examples 1 to 6 and commercially available comparison welding wire 1~2 are subjected to soldering test, welding condition is shown in Table 1.According to
According to 228 metal material tensile testing at ambient temperature of GB/T, the room temperature tensile intensity of test welding deposited metal test plate (panel), surrender are strong
Degree and elongation percentage；According to 4338 Metal Materials At High Temperature tension test of GB/T, under 1050 DEG C and 25MPa experimental condition, test weldering
Connector high temperature endurance performance, test result are shown in Table 2.Welding technological properties comparison is shown in Table 3.According to table 2~3 as can be seen that originally
The welding wire of invention has excellent room temperature and mechanical behavior under high temperature, room temperature tensile intensity minimum 700MPa, Testing Tensile Strength at Elevated Temperature
Minimum 620MPa, rupture time resistant to high temperatures are all larger than 100h and fracture in matrix location；Wire feed and arc stability are welded, is splashed
Few, appearance of weld is beautiful, and corrosion resistance is good, and welding technological properties is excellent, can fully meet the resistance to height of oil-gas pipeline inner wall overlaying
The corrosion resistant welding requirements of temperature.
1. welding condition of table
The mechanical property of the deposited metal of welding wire and commercially available comparison welding wire in 2. Examples 1 to 6 of table
The welding technological properties of welding wire and commercially available comparison welding wire in 3. Examples 1 to 6 of table
Claims (10)
1. oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method, which is characterized in that the welding wire
Middle each component and shared weight percent are as follows: Ni:55~65%, Cr:20~30%, Mo:7~12%, Nb:2~5%, Re:0.01~
0.10%, Si:0.05~0.20%, Mn:0.10~0.50%, Al:0.10~0.60%, Ti:0.10~0.60%, Zr 0.01~
0.05%, surplus is Fe and inevitable impurity.
2. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, the welding wire chinese raw materials specifically includes that metallic nickel, crome metal, metal molybdenum, metal niobium, rare earth oxide, monocrystalline
Silicon, electrolytic manganese, metallic aluminium, Titanium, zirconium silicon alloy, atomized iron powder.
3. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, the Re in the welding wire is Y, Ce, Er, one or more of common rare earth element such as Cs, La.
4. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, the weight content ratio of Al/Ti is between 1~2 in the welding wire.
5. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, the weight content ratio of Re/Zr is between 1~3 in the welding wire.
6. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, the weight content ratio of Mn/Si is between 3~6 in the welding wire.
7. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, the partial size of each powder is between 60~100 mesh in the welding wire.
8. oil-gas pipeline as described in claim 1 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, comprising the following steps:
(1) alloy melting: raw material is put into vacuum induction melting according to the proportion, vacuum degree need to reach 6.5 × 10-2Pa or more,
And pour into electrode bar；
(2) electroslag remelting: using electroslag remelting equipment, and electrode will be used as after the surface grinding process of step (1) electrode bar
It is inserted into remelting in slag, power failure cooling time is 5~10min, takes off ingot, is cooled to room temperature, obtains alloy pig；
(3) hot forging: step (2) described alloy pig is put into heating in the heating furnace of initial temperature≤600 DEG C, is warming up to
1150~1180 DEG C, 55~75min is kept the temperature, alloy preform is forged into, is cooled to room temperature；
(4) hot-roll annealing: being heated to 1100~1150 DEG C for alloy preform described in step (3), is rolled into disk circle silk material, is cooled to
Room temperature；
(5) mechanical descaling: using mechanical descaling equipment, and the circle of disk described in step (4) silk material surface is carried out mechanical descaling processing,
Surface scale is removed, bright disk circle silk material is obtained；
(6) drawing tube reducing: bright disk described in step (5) is justified silk material gradually drawing tube reducing, directly by the existing cold-drawing process of use
To silk material diameter be 1.2~2.4mm, guarantee silk material clean surface it is smooth, impulse- free robustness, pit, scratch, sharp bend, knot, greasy dirt and
Other impurities etc.；
(7) accurate layer around: using accurate layer around equipment, by silk material layer described in step (6) on wire reel.
9. oil-gas pipeline as claimed in claim 8 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
It is characterized in that, when electroslag remelting, slag uses CaF2-Al2O3- CaO slag system, CaF in slag system2Weight percent be 75~
85%, Al2O3Weight percent be 12~18%, CaO weight percent content be 4~6%.
10. oil-gas pipeline as claimed in claim 8 inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method,
Be characterized in that, accurate layer around rear welding wire line through tolerance be (+0.01mm, -0.04mm), relaxed diameter be 600~
1000mm is stuck up away from for 0~15mm.
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| CN111318834A (en) * | 2020-03-26 | 2020-06-23 | 江苏博航合金科技有限公司 | Nickel alloy welding wire for welding cast iron pipe and preparation method thereof |
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| CN113088761A (en) * | 2021-02-21 | 2021-07-09 | 江苏汉青特种合金有限公司 | Ultrahigh-strength corrosion-resistant alloy and manufacturing method thereof |
| CN113523719A (en) * | 2021-07-10 | 2021-10-22 | 上海泽超实业有限公司 | Machining process of helical blade |
| CN113732562A (en) * | 2021-08-19 | 2021-12-03 | 江苏新航合金科技有限公司 | High-temperature-resistant corrosion-resistant nickel-based alloy welding material for pressure container |
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| CN114769933A (en) * | 2022-04-07 | 2022-07-22 | 江西恒大高新技术股份有限公司 | Inconel 625 modified alloy surfacing welding wire and preparation method thereof |
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