CN112935613B - Matched flux-cored wire for welding iron-nickel alloy plates for ships - Google Patents
Matched flux-cored wire for welding iron-nickel alloy plates for ships Download PDFInfo
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- CN112935613B CN112935613B CN202110109072.XA CN202110109072A CN112935613B CN 112935613 B CN112935613 B CN 112935613B CN 202110109072 A CN202110109072 A CN 202110109072A CN 112935613 B CN112935613 B CN 112935613B
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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
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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
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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
- B23K35/36—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
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the field of welding materials, and relates to a matched flux-cored wire for welding an iron-nickel alloy plate for a ship, which comprises a sheath and a flux core, wherein the flux core comprises the following chemical components: 0.15-0.20% of nano hollow cage-shaped carbon-ruthenium composite microspheres, 6.2-7.5% of nano lanthanum zirconate, 32-38% of nano nickel powder, 2.2-3.2% of manganese powder, 0.21-0.30% of vanadium powder, 2.0-2.8% of FLM4 aluminum magnesium alloy powder, 3.2-4.0% of calcium fluoride powder, 3.5-4.5% of rutile powder, 3.6-4.2% of marble powder and the balance of FHT 100.25 reduced iron powder. The deposited metal has high tensile strength (621-692MPa), proper yield strength (242-255MPa), extremely high toughness (elongation after fracture is not less than 39.5 percent) and low yield ratio (not more than 0.39), and the corrosion resistance meets the use requirement.
Description
Technical Field
The invention belongs to the technical field of welding materials, and particularly relates to a matched flux-cored wire for welding an iron-nickel alloy plate for ships.
Background
With the rapid development of national defense, shipbuilding, industry and fishery, the application of the iron-nickel alloy plate for the ship is wider and wider, and the standard CB 1330 of the department of general ship industry corporation of China, the specification of the iron-nickel alloy plate for the ship, provides detailed technical requirements for the iron-nickel alloy plate. The main technology of the component member of the iron-nickel alloy plate for the ships is welding technology, and in order to be matched with the iron-nickel alloy plate for the ships, the requirement of a welding joint for depositing metal is met: firstly, the elongation after fracture is not less than 35 percent; tensile strength is not less than 520MPa, yield strength is not less than 220MPa, and yield ratio is not more than 0.42; and good corrosion resistance. Due to the particularity of the use, the plate needs to adopt a matched special welding material. In order to achieve the purpose of use, flux-cored wires with excellent performance are generally adopted for welding, and no literature report related to matched flux-cored wires for welding iron-nickel alloy plates for ships is found at present.
Chinese patent CN109304464A discloses a hollow cage-shaped carbon/Ru composite microsphere for hydrogen production by water electrolysis and a preparation method thereof, the hollow cage-shaped carbon/Ru composite microsphere is prepared by a hydrothermal method, but the hollow cage-shaped carbon/Ru composite microsphere is only applied to hydrogen production by water electrolysis, and relevant literature reports of the hollow cage-shaped carbon/Ru composite microsphere applied to the field of preparation of high-performance flux-cored wires are not found.
The development of the matched flux-cored wire for welding the iron-nickel alloy plate for the ship is a technical problem to be solved urgently at present.
Disclosure of Invention
The invention provides a matched flux-cored wire for welding an iron-nickel alloy plate for ships, which solves the following technical problems: firstly, the elongation after fracture of deposited metal is not less than 35 percent; the tensile strength of the deposited metal is not less than 520MPa, the yield strength is not less than 220MPa, and the yield ratio is not more than 0.42; and the corrosion resistance of the deposited metal is good.
The invention adopts the following technical scheme:
a matched flux-cored wire for welding an iron-nickel alloy plate for a ship comprises a sheath and a flux core, wherein the flux core comprises the following chemical components in percentage by mass: 0.15-0.20% of nano hollow cage-shaped carbon-ruthenium composite microspheres, 6.2-7.5% of nano lanthanum zirconate, 32-38% of nano nickel powder, 2.2-3.2% of manganese powder, 0.21-0.30% of vanadium powder, 2.0-2.8% of FLM4 aluminum magnesium alloy powder, 3.2-4.0% of calcium fluoride powder, 3.5-4.5% of rutile powder, 3.6-4.2% of marble powder and the balance of FHT 100.25 reduced iron powder.
The outer diameter of the nano hollow cage-shaped carbon-ruthenium composite microsphere is 300nm-360nm, the inner diameter is 220nm-280nm, the diameter of a mesoporous is 30nm-40nm, the particle size of ruthenium is 2.5nm-3.5nm, ruthenium is loaded on both the inner wall and the outer wall of the hollow cage-shaped carbon microsphere of the nano hollow cage-shaped carbon-ruthenium composite microsphere, and the mass fraction of ruthenium is 22% -28% of the mass of the nano hollow cage-shaped carbon-ruthenium composite microsphere.
Further, the particle size of the nano lanthanum zirconate is 20nm-30 nm.
Furthermore, the particle size of the nano nickel powder is 40nm-60 nm.
Due to the small size effect, the melting point of the nano nickel powder is greatly reduced and is far less than the melting point (1453 ℃) of micron nickel when the particle size is 40nm-60nm, and the nano nickel powder can be completely melted and uniformly distributed in a welding pool.
Further, the 100-mesh passing rates of the manganese powder, the vanadium powder, the calcium fluoride powder, the rutile powder, the marble powder and the FHT 100.25 reduced iron powder are all 100%.
The filling rate of the medicine core is 26-30%.
The outer skin is made of low-carbon cold-rolled steel strips, and the thickness of the steel strips is 0.5mm-1.2 mm.
Further, the low-carbon cold-rolled steel strip comprises the following chemical components in percentage by mass: 0.001-0.003% of carbon, 0.25-0.35% of manganese, 0.001-0.015% of silicon, 0-0.001% of sulfur, 0-0.001% of phosphorus and the balance of iron; the tensile strength of the steel strip is 400MPa-430MPa, and the elongation after fracture is not less than 40%.
The diameter of the flux-cored wire is 3.2mm-8.0mm, preferably 5.0mm-7.2 mm.
The matched flux-cored wire for welding the iron-nickel alloy plate for the ship comprises the following preparation steps:
1) selecting materials: selecting the raw materials of the chemical components for quality purity control;
2) treating the medicinal powder: putting the medicinal powder into an open quartz container, and then putting the medicinal powder into a drying oven for drying at 55 +/-5 ℃ for 2.5-3.2 h;
3) powder sieving: sieving the dried manganese powder, vanadium powder, calcium fluoride powder, rutile powder, marble powder and FHT 100.25 reduced iron powder with 100-mesh sieve respectively, storing the fine powder after sieving, and removing impurities;
4) powder preparation and mixing: weighing the medicinal powder according to a certain proportion, adding into a powder mixing machine, stirring and mixing to obtain mixed medicinal powder;
5) rolling a steel belt and packaging medicinal powder: placing the low-carbon cold-rolled steel strip on a strip placing device of a flux-cored wire forming machine, manufacturing the low-carbon cold-rolled steel strip into a U-shaped groove through the forming machine, adding the mixed powder obtained in the step 4) into the U-shaped groove, rolling and closing the U-shaped groove through the forming machine to form an O shape, wrapping the powder in the groove, drawing and reducing the diameter of the groove by channels through a wire drawing machine, drawing the diameter of the groove to 3.2-8.0 mm to obtain a flux-cored wire, coiling the flux-cored wire into a disc, and sealing and packaging.
The invention has the following beneficial technical effects:
1. the invention adopts the nano lanthanum zirconate powder, has a high-density short-distance diffusion path due to the nano size effect, has faster diffusion speed and more uniform distribution, and zirconium and lanthanum generated by the decomposition of the lanthanum zirconate powder are more uniformly distributed in deposited metal under the action of arc heat input; because the electric arc is a moving heat source, a small part of the nano lanthanum zirconate powder cannot be decomposed in time, but can be used as a mass point without spontaneous nucleation when the deposited metal is solidified, so that the crystal grains of the deposited metal are effectively refined, and the toughness of the deposited metal is improved (including improving the elongation after fracture and reducing the yield ratio).
2. According to the invention, hollow cage-shaped carbon microspheres with the nanometer-scale outer diameter are used as a carbon source, the carbon microspheres with the nanometer-scale outer diameter are easier to diffuse in a metal melt than carbon sources such as graphite, the carbon microspheres are uniformly distributed during welding, atoms such as nickel, manganese, vanadium and iron can enter the empty cage through mesopores to burst the empty cage, so that the carbon distribution is more uniform, and further deposited metal with uniformly distributed carbides is obtained, the strength and toughness of the deposited metal can be effectively improved under the condition of smaller carbon source content, and the smaller carbon source content is very beneficial to improving the elongation after fracture of the deposited metal; the inner wall and the outer wall of the hollow cage-shaped carbon microsphere are both loaded with nano ruthenium particles which are uniformly dispersed in deposited metal, and the corrosion resistance of the deposited metal is greatly improved by utilizing the strong corrosion resistance of ruthenium; the addition of chromium-free elements in the flux core (a small amount of chromium is mixed in the base metal during welding) effectively reduces the tendency of generating chromium carbide, weakens the hazards of brittleness increase and poor corrosion resistance caused by the adhesion of the chromium carbide on the edge of a crystal boundary, and ensures that the deposited metal has high elongation after fracture and low yield ratio and excellent corrosion resistance.
3. The deposited metal has high strength (the tensile strength is 621MPa-692MPa, the yield strength is 242MPa-255 MPa), extremely high toughness (the elongation after fracture is not less than 39.5 percent), low yield ratio (not more than 0.39), and corrosion resistance which completely meets the use requirement.
Detailed Description
The principles and features of the present invention are described below in conjunction with examples and comparative examples, which are set forth to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1:
a matched flux-cored wire for welding an iron-nickel alloy plate for ships comprises a sheath and a flux core, wherein the flux core comprises the following chemical components in percentage by mass: 0.15% of nano hollow cage-shaped carbon-ruthenium composite microspheres, 6.2% of nano lanthanum zirconate, 32% of nano nickel powder, 2.2% of manganese powder, 0.21% of vanadium powder, 2.0% of FLM4 aluminum magnesium alloy powder, 3.2% -4.0% of calcium fluoride powder, 3.5% of rutile powder, 3.6% of marble powder and the balance of FHT 100.25 reduced iron powder.
The outer diameter of the nano hollow cage-shaped carbon-ruthenium composite microsphere is 300nm-360nm, the inner diameter is 220nm-280nm, the diameter of a mesoporous is 30nm-40nm, the particle size of ruthenium is 2.5nm-3.5nm, ruthenium is loaded on the inner wall and the outer wall of the hollow cage-shaped carbon microsphere of the nano hollow cage-shaped carbon-ruthenium composite microsphere, and the mass fraction of ruthenium is 22% of the mass of the nano hollow cage-shaped carbon-ruthenium composite microsphere.
The grain size of the nano lanthanum zirconate is 20nm-30 nm.
The particle size of the nano nickel powder is 40nm-60 nm.
The 100-mesh passing rates of the manganese powder, the vanadium powder, the calcium fluoride powder, the rutile powder, the marble powder and the FHT 100.25 reduced iron powder are all 100 percent.
The filling rate of the drug core is 26%.
The outer skin is made of low-carbon cold-rolled steel strips, and the thickness of the steel strips is 0.5 mm.
The flux-cored wire is prepared according to the method of the invention, and the diameter of the flux-cored wire is 3.2 mm.
Example 2:
a matched flux-cored wire for welding an iron-nickel alloy plate for ships comprises a sheath and a flux core, wherein the flux core comprises the following chemical components in percentage by mass: 0.17 percent of nano hollow cage-shaped carbon-ruthenium composite microsphere and 6 percent of nano lanthanum zirconate. 9 percent of nano nickel powder, 35 percent of nano nickel powder, 2.7 percent of manganese powder, 0.26 percent of vanadium powder, 2.4 percent of FLM4 aluminum magnesium alloy powder, 3.6 percent of calcium fluoride powder, 4.0 percent of rutile powder, 3.9 percent of marble powder and the balance of FHT 100.25 reduced iron powder.
The outer diameter of the nano hollow cage-shaped carbon-ruthenium composite microsphere is 300nm-360nm, the inner diameter is 220nm-280nm, the diameter of a mesoporous is 30nm-40nm, the particle size of ruthenium is 2.5nm-3.5nm, ruthenium is loaded on the inner wall and the outer wall of the hollow cage-shaped carbon microsphere of the nano hollow cage-shaped carbon-ruthenium composite microsphere, and the mass fraction of ruthenium is 25% of the mass of the nano hollow cage-shaped carbon-ruthenium composite microsphere.
The grain size of the nano lanthanum zirconate is 20nm-30 nm.
The particle size of the nano nickel powder is 40nm-60 nm.
The 100-mesh passing rates of the manganese powder, the vanadium powder, the calcium fluoride powder, the rutile powder, the marble powder and the FHT 100.25 reduced iron powder are all 100 percent.
The filling rate of the drug core is 28%.
The outer skin is made of low-carbon cold-rolled steel strips, and the thickness of the steel strips is 1.2 mm.
The flux-cored wire is prepared according to the method of the invention, and the diameter of the flux-cored wire is 8.0 mm.
Example 3:
a matched flux-cored wire for welding an iron-nickel alloy plate for ships comprises a sheath and a flux core, wherein the flux core comprises the following chemical components in percentage by mass: 0.20% of nano hollow cage-shaped carbon-ruthenium composite microspheres, 7.5% of nano lanthanum zirconate, 38% of nano nickel powder, 3.2% of manganese powder, 0.30% of vanadium powder, 2.8% of FLM4 aluminum magnesium alloy powder, 4.0% of calcium fluoride powder, 4.5% of rutile powder, 4.2% of marble powder and the balance of FHT 100.25 reduced iron powder.
The outer diameter of the nano hollow cage-shaped carbon-ruthenium composite microsphere is 300nm-360nm, the inner diameter is 220nm-280nm, the diameter of a mesoporous is 30nm-40nm, the particle size of ruthenium is 2.5nm-3.5nm, ruthenium is loaded on the inner wall and the outer wall of the hollow cage-shaped carbon microsphere of the nano hollow cage-shaped carbon-ruthenium composite microsphere, and the mass fraction of ruthenium is 24% of the mass of the nano hollow cage-shaped carbon-ruthenium composite microsphere.
The grain size of the nano lanthanum zirconate is 20nm-30 nm.
The particle size of the nano nickel powder is 40nm-60 nm.
The 100-mesh passing rates of the manganese powder, the vanadium powder, the calcium fluoride powder, the rutile powder, the marble powder and the FHT 100.25 reduced iron powder are all 100 percent.
The filling rate of the drug core is 28%.
The outer skin is made of low-carbon cold-rolled steel strips, and the thickness of the steel strips is 0.8 mm.
The flux-cored wire is prepared according to the method of the invention, and the diameter of the flux-cored wire is 5.0 mm.
Comparative example 1:
essentially the same as example 3, except that the core chemistry is devoid of nano lanthanum zirconate.
Comparative example 2:
essentially the same as example 3, except that the nano lanthanum zirconate is replaced by micro lanthanum zirconate of corresponding mass in the chemical composition of the flux core. Comparative example 3:
basically the same as example 3, except that the nano lanthanum zirconate in the chemical composition of the flux core is replaced by nano zirconium.
Comparative example 4:
basically the same as example 3, except that the nano lanthanum zirconate in the chemical composition of the flux core is changed into nano lanthanum.
Comparative example 5:
basically the same as example 3, except that the nano lanthanum zirconate in the chemical composition of the flux core is changed into nano zirconium and nano lanthanum with corresponding mass.
Comparative example 6:
the method is basically the same as the example 3, and is different from the method in that the nano hollow cage-shaped carbon-ruthenium composite microspheres in the chemical components of the drug core are replaced by nano hollow cage-shaped carbon microspheres with corresponding contained mass.
Comparative example 7:
the difference is that the nano hollow cage-shaped carbon-ruthenium composite microspheres in the chemical components of the drug core are replaced by ruthenium with corresponding mass as in example 3.
Comparative example 8:
basically the same as example 3, except that the nano hollow cage-shaped carbon-ruthenium composite microspheres in the chemical components of the drug core are replaced by nano hollow cage-shaped carbon microspheres and ruthenium with corresponding contained mass.
Comparative example 9:
basically the same as example 3, except that the chemical composition of the drug core does not contain nano hollow cage-shaped carbon-ruthenium composite microspheres.
Comparative example 10:
basically the same as example 3, except that the nano-nickel in the chemical composition of the flux core is replaced by micron-sized nickel.
Flux-cored wires prepared in examples 1, 2 and 3 and comparative examples 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 were butt-welded to an FN-2 steel plate, and mechanical properties and corrosion resistance were measured according to GB/T2652 + 2008 "weld joint and deposited metal tensile test method" and GB/T10125-2012 "salt spray test for Artificial atmosphere Corrosion test", and the results are shown in Table 1.
TABLE 1
| Item | Yield strength/MPa | Tensile strength/MPa | Yield ratio | Elongation after break/% | Corrosion resistance/(g/m)2) |
| Example 1 | 242 | 621 | 0.39 | 39.5 | 37.2 |
| Example 2 | 251 | 648 | 0.39 | 40.6 | 36.6 |
| Example 3 | 255 | 692 | 0.37 | 42.5 | 36.3 |
| Comparative example 1 | 355 | 561 | 0.63 | 32.6 | 39.5 |
| Comparative example 2 | 332 | 598 | 0.56 | 34.0 | 39.1 |
| Comparative example 3 | 342 | 579 | 0.59 | 33.2 | 39.2 |
| Comparative example 4 | 340 | 562 | 0.60 | 32.8 | 39.1 |
| Comparative example 5 | 296 | 550 | 0.54 | 34.2 | 39.5 |
| Comparative example 6 | 259 | 685 | 0.38 | 42.2 | 46.2 |
| Comparative example 7 | 352 | 518 | 0.68 | 32.9 | 37.7 |
| Comparative example 8 | 253 | 649 | 0.39 | 40.1 | 41.5 |
| Comparative example 9 | 257 | 572 | 0.45 | 31.6 | 43.2 |
| Comparative example 10 | 298 | 647 | 0.46 | 36.9 | 42.7 |
Note: the guaranteed value of the yield strength is not less than 220 MPa; the guaranteed value of the tensile strength is not less than 520 MPa; the guaranteed value of the yield ratio is not more than 0.42; the guaranteed value of the elongation after fracture is not less than 35 percent; the guaranteed value of the corrosion resistance is not more than 40g/m2。
(1) Examples 1, 2, 3 show that: the flux-cored wire prepared by the technical scheme of the invention meets the requirements on yield strength, tensile strength, yield ratio and corrosion resistance of deposited metal.
(2) As can be seen from comparative example 1: when the chemical components of the flux core are free of nano lanthanum zirconate, the yield strength and the tensile strength meet the requirements, but the yield ratio and the elongation after fracture do not meet the requirements, because the effect of refining grains is poor, but the corrosion resistance is better.
(3) As can be seen from comparative example 2: the nanometer lanthanum zirconate in the chemical components of the flux core is changed into micron-sized lanthanum zirconate with corresponding mass, and because a small part of undecomposed micron-sized lanthanum zirconate can not be used as a mass point of secondary nucleation, the effect of grain refinement is weakened, a cracking phenomenon exists, and the yield ratio and the elongation after fracture do not meet the requirements.
(4) From comparative example 3 it can be seen that: the nanometer lanthanum zirconate in the chemical components of the flux core is changed into nanometer zirconium, the effect of lanthanum is avoided, and the yield ratio and the elongation after fracture do not meet the requirements.
(5) From comparative example 4 it can be seen that: the nano lanthanum zirconate in the chemical components of the flux core is changed into the nano lanthanum, the effect of zirconium is avoided, and the yield ratio and the elongation after fracture do not meet the requirements.
(6) From comparative example 5 it can be seen that: the nano lanthanum zirconate in the chemical components of the flux core is replaced by nano zirconium and nano lanthanum with corresponding mass, the dispersion uniformity of the nano lanthanum zirconate is poorer than that of the embodiment, the yield ratio and the elongation after fracture are improved to a certain extent compared with the comparative examples 2 and 3, but the nano lanthanum zirconate still does not meet the requirement.
(7) From comparative example 6 it can be seen that: the nano hollow cage-shaped carbon-ruthenium composite microspheres in the chemical components of the flux core are replaced by nano hollow cage-shaped carbon microspheres with corresponding contained mass, and although the yield strength, the tensile strength and the yield ratio of deposited metal meet the requirements, the corrosion resistance does not meet the requirements because ruthenium which is an element with extremely strong corrosion resistance is lacked.
(8) From comparative example 7 it can be seen that: the nano hollow cage-shaped carbon-ruthenium composite microspheres in the chemical components of the drug core are replaced by ruthenium with corresponding contained mass, and due to the lack of a carbon source, the tensile strength is not satisfactory and the yield ratio is too high.
(9) From comparative example 8 it can be seen that: the nano hollow cage-shaped carbon-ruthenium composite microspheres in the chemical components of the drug core are replaced by nano hollow cage-shaped carbon microspheres and ruthenium with corresponding contained mass, but the dispersion uniformity of the nano hollow cage-shaped carbon-ruthenium composite microspheres is poorer than that of the nano hollow cage-shaped carbon-ruthenium composite microspheres, the yield strength, the tensile strength, the yield ratio and the elongation after fracture meet the requirements, but the effect is not friendly, and the corrosion resistance does not meet the requirements.
(10) From comparative example 9 it can be seen that: the chemical components of the drug core are free of nano hollow cage-shaped carbon-ruthenium composite microspheres, the tensile strength is low without carbon source, the yield ratio is high, and the corrosion resistance is poor without ruthenium.
(11) As can be seen from comparative example 10: the nanometer nickel in the chemical components of the flux core is changed into micron nickel, the melting point of the nickel is higher than that of the nanometer nickel, the nickel cannot be completely melted under the action of an electric arc which is a moving heat source, the distribution is not uniform, the yield ratio and the elongation after fracture do not meet the requirements, and the distribution uniformity of the nickel also influences the corrosion resistance and does not meet the requirements.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The matched flux-cored wire for welding the iron-nickel alloy plate for the ship comprises a sheath and a flux core, and is characterized in that the flux core comprises the following chemical components in percentage by mass: 0.15-0.20% of nano hollow cage-shaped carbon-ruthenium composite microspheres, 6.2-7.5% of nano lanthanum zirconate, 32-38% of nano nickel powder, 2.2-3.2% of manganese powder, 0.21-0.30% of vanadium powder, 2.0-2.8% of FLM4 aluminum magnesium alloy powder, 3.2-4.0% of calcium fluoride powder, 3.5-4.5% of rutile powder, 3.6-4.2% of marble powder and the balance of FHT 100.25 reduced iron powder.
2. The matched flux-cored wire for welding the iron-nickel alloy plate for the ship according to claim 1, wherein the outer diameter of the nano hollow cage-shaped carbon-ruthenium composite microsphere is 300nm to 360nm, the inner diameter is 220nm to 280nm, the diameter of a mesoporous is 30nm to 40nm, the particle size of ruthenium is 2.5nm to 3.5nm, ruthenium is loaded on the inner wall and the outer wall of the hollow cage-shaped carbon microsphere of the nano hollow cage-shaped carbon-ruthenium composite microsphere, and the mass fraction of ruthenium is 22% to 28% of the mass of the nano hollow cage-shaped carbon-ruthenium composite microsphere.
3. The matched flux-cored wire for welding the iron-nickel alloy plate for the ship according to claim 1, wherein the particle size of the nano lanthanum zirconate is 20nm to 30 nm.
4. The matched flux-cored wire for welding the iron-nickel alloy plate for the ship according to claim 1, wherein the particle size of the nano nickel powder is 40nm-60 nm.
5. The matched flux-cored wire for welding the iron-nickel alloy plate for the ship according to claim 1, wherein the 100-mesh passing rates of the manganese powder, the vanadium powder, the calcium fluoride powder, the rutile powder, the marble powder and the FHT 100.25 reduced iron powder are all 100%.
6. The matched flux-cored wire for welding the iron-nickel alloy plate for the ship as claimed in claim 1, wherein the filling rate of the flux core is 26-30%.
7. The matched flux-cored wire for welding the iron-nickel alloy plates for the ships according to claim 1, wherein the outer skin is made of low-carbon cold-rolled steel strips, and the thickness of the steel strips is 0.5mm-1.2 mm.
8. The matched flux-cored wire for welding the iron-nickel alloy plates for the ships according to claim 1, wherein the diameter of the flux-cored wire is 3.2mm-8.0 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3466422A (en) * | 1966-11-21 | 1969-09-09 | Int Nickel Co | Welding material for austenitic ductile iron |
| CN101716707A (en) * | 2009-11-26 | 2010-06-02 | 深圳市亿铖达工业有限公司 | Nano reinforced lead-free composite soldering material |
| CN102719778A (en) * | 2012-06-27 | 2012-10-10 | 中国地质大学（武汉） | Nanostructured cerium-doped lanthanum zirconate spherical powder for thermal spraying and preparation method thereof |
| CN103495817A (en) * | 2013-10-16 | 2014-01-08 | 宁波隆兴焊割科技股份有限公司 | Alkaline welding flux cored wire protected by CO2 gas or 80Ar + CO2 gas |
| CN108788516A (en) * | 2018-07-02 | 2018-11-13 | 北京金威焊材有限公司 | The Ni-based flux-cored wire of Ni-Cr-Mo tungsten system |
| CN110293332A (en) * | 2019-06-03 | 2019-10-01 | 中冶建筑研究总院有限公司 | Alkaline flux-cored wire is used in a kind of high-strength weathering, refractory steel welding |
-
2021
- 2021-01-27 CN CN202110109072.XA patent/CN112935613B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3466422A (en) * | 1966-11-21 | 1969-09-09 | Int Nickel Co | Welding material for austenitic ductile iron |
| CN101716707A (en) * | 2009-11-26 | 2010-06-02 | 深圳市亿铖达工业有限公司 | Nano reinforced lead-free composite soldering material |
| CN102719778A (en) * | 2012-06-27 | 2012-10-10 | 中国地质大学（武汉） | Nanostructured cerium-doped lanthanum zirconate spherical powder for thermal spraying and preparation method thereof |
| CN103495817A (en) * | 2013-10-16 | 2014-01-08 | 宁波隆兴焊割科技股份有限公司 | Alkaline welding flux cored wire protected by CO2 gas or 80Ar + CO2 gas |
| CN108788516A (en) * | 2018-07-02 | 2018-11-13 | 北京金威焊材有限公司 | The Ni-based flux-cored wire of Ni-Cr-Mo tungsten system |
| CN110293332A (en) * | 2019-06-03 | 2019-10-01 | 中冶建筑研究总院有限公司 | Alkaline flux-cored wire is used in a kind of high-strength weathering, refractory steel welding |
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