CN112621023A - High-corrosion-resistance nickel alloy welding wire and preparation method thereof - Google Patents
High-corrosion-resistance nickel alloy welding wire and preparation method thereof Download PDFInfo
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- CN112621023A CN112621023A CN201910904991.9A CN201910904991A CN112621023A CN 112621023 A CN112621023 A CN 112621023A CN 201910904991 A CN201910904991 A CN 201910904991A CN 112621023 A CN112621023 A CN 112621023A
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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
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
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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
-
- 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
Abstract
The invention discloses a high corrosion-resistant nickel alloy welding wire and a preparation method thereof, wherein the nickel alloy welding wire comprises the following components: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, and the content of Ni is 45-47 wt%. The invention improves the corrosion resistance of the alloy by improving the content of Cr and properly reducing the content of Ni element, ensures the strength of the alloy by controlling the content of C, Si, Mn, P, S, Fe and N added into the alloy and adding a certain amount of rare earth element metal, such as Nb, and ensures that the alloy has good plastic processability and good comprehensive performance.
Description
Technical Field
The invention relates to the technical field of alloys, in particular to a high-corrosion-resistance nickel alloy welding wire and a preparation method thereof.
Background
The welding wire is a metal wire which is melted and filled at the joint of welding workpieces during gas welding or electric welding, and when the welding wire is used for welding, the core metal accounts for a part of the whole weld metal, so the chemical components of the core directly influence the quality of the weld. The welding wire made of the high-chromium-nickel high-temperature alloy is a commonly used welding wire, but the chemical components of the high-chromium-nickel high-temperature alloy are complex, the alloy has different tissue states along with different use conditions, particularly the carbon content and the alloy content are increased, the quality control difficulty of a welding joint is increased, the weld metal of the high-chromium-nickel high-temperature alloy has a larger tendency of crystallization cracks in the welding process, and in addition, the problems of welding seam blowholes and easy corrosion of the welding joint exist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the nickel alloy welding wire with high strength and good corrosion resistance and the preparation method thereof, so as to fundamentally solve the welding problem caused by poor performance of the welding wire.
The invention adopts the specific technical scheme that:
a high corrosion-resistant nickel alloy welding wire comprises the following components: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, and the content of Ni is 45-47 wt%.
Preferably, the nickel alloy welding wire composition consists of: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, the content of Ni is 45-47 wt%, and the content of Nb is 1.8-2.0 wt%.
Preferably, the nickel alloy welding wire composition consists of: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, the content of Ni is 45-47 wt%, the content of Nb is 1.8-2.0 wt%, and the content of N is 0.05-0.1 wt%.
More preferably, the nickel alloy wire composition consists of: less than or equal to 0.08 percent of C, less than or equal to 0.7 percent of Si, less than or equal to 1.5 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, 49-50 percent of Cr, 45-47 percent of Ni, 1.8-2.0 percent of Nb0, less than or equal to 0.5 percent of Fe, 0.05-0.1 percent of N, and less than or equal to 0.5 percent of other inevitable impurity elements.
Correspondingly, the invention also provides a preparation method of the high-corrosion-resistance nickel alloy welding wire, which comprises the following steps:
(1) alloy smelting: proportioning according to the mass percentage of each component of the welding wire, putting the raw materials into a vacuum induction furnace for smelting, and then pouring into an electrode rod;
(2) electroslag remelting: adopting electroslag remelting equipment, polishing the surface of an electrode bar, inserting the electrode bar into slag for remelting, wherein the slag adopts Na2CO3－SiO2－CaCO3Slag system, cutting off power and cooling for 5-10min, removing ingots, and cooling to normal temperature to obtain alloy ingots;
(3) forging: heating the alloy ingot in a heating furnace with the initial temperature of less than or equal to 600 ℃, heating to 1200-1250 ℃, preserving heat for 1 hour, forging into an alloy blank, and cooling to normal temperature;
(4) hot rolling treatment: heating the alloy blank to 1100-1150 ℃ for hot rolling, hot rolling into wire rods, and cooling to normal temperature in air;
(5) acid washing and grinding: pickling the wire rod with a pickling solution, and then finishing and polishing;
(6) cold drawing: and (3) gradually thinning the wire rod by adopting the existing cold drawing process through multi-pass drawing (drawing-annealing-drawing), thus obtaining the nickel alloy welding wire.
Preferably, Na2CO3－SiO2－CaCO3Na in slag system2The weight percentage of CO3 is 65-75%, SiO217-23% of CaCO3The content of the components is 8-11% by weight.
Preferably, the acid wash solution is HNO3-mixed solution of HF-HCl, in which HNO3The concentration of (A) is 1-10%, the concentration of HF is 1-10%, and the concentration of HCl is 1-30%.
Ni: the austenite forming element is used for transferring alloy elements to the weld metal, plays a positive role in high temperature resistance, oxidation resistance and toughness of the weld, and can improve the strength of the weld metal without obviously reducing the toughness of the weld metal.
Cr: ferrite forming elements are used for transferring alloy elements to weld metal, a compact Cr2O3 corrosion-resistant passive film is formed on the surface of the nickel-based alloy in an oxidizing atmosphere at an accelerated speed, and the corrosion-resistant passive film plays a decisive role in oxidation resistance, strength and carburizing resistance of the weld metal.
C: the carbon element directly influences the strength, the plasticity, the toughness, the welding performance and the like of the alloy, when the carbon content in the alloy is below 0.8 percent, the strength and the hardness of the alloy are improved along with the increase of the carbon content, and the plasticity and the toughness are reduced; with the increase of the carbon content, the cold brittleness and the aging sensitivity are increased, and the atmospheric rust resistance is reduced. The invention balances the strength and plasticity of the alloy and improves the corrosion resistance of the alloy to a certain extent by controlling the carbon content in the alloy to be less than 0.08 percent.
Si: the deoxidizer improves the fluidity of a welding molten pool and can improve the high-temperature oxidation resistance of the furnace tube by forming a silicon-rich oxidation protection film per se; can promote and improve the tensile strength of the alloy.
Mn: s can be formed into spheroidized MnS, the harm of S is eliminated, and the welding performance is improved.
Fe: fe is a characteristic microalloy element, and can form an alloy system with chromium and nickel, so that the tensile strength, yield limit and heat resistance of the alloy can be improved, and the plasticity of the alloy can be improved.
Nb: the alloy is used for increasing recrystallization temperature (refining crystal grains) and improving strength; meanwhile, niobium can improve welding performance, and the intergranular corrosion phenomenon can be prevented by adding niobium into the austenitic alloy.
The invention has the beneficial effects that: the invention improves the corrosion resistance of the alloy by improving the content of Cr and properly reducing the content of Ni element, ensures the strength of the alloy by controlling the content of C, Si, Mn, P, S, Fe and N added into the alloy and adding a certain amount of rare earth element metal, such as Nb, and ensures that the alloy has good plastic processability and good comprehensive performance. The preparation method adopts Na2CO3－SiO2－CaCO3The slag system can change the form of phosphorus in the alloy, and is convenient for removing the phosphorus by acid cleaning later.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto, and various substitutions and alterations can be made without departing from the technical idea of the present invention as described above, according to the common technical knowledge and the conventional means in the field.
Example 1
A high corrosion-resistant nickel alloy welding wire comprises the following components: 0.08 wt% of C, 0.7 wt% of Si, 1.5 wt% of Mn, 0.015 wt% of P, 0.015 wt% of S, 49 wt% of Cr, 46.09 wt% of Ni46, 2.0 wt% of Nb2, 0.5 wt% of Fe, 0.1 wt% of N, and 0.5 wt% of other inevitable impurity elements.
Example 2
A high corrosion-resistant nickel alloy welding wire comprises the following components: 0.06 wt% of C, 0.5 wt% of Si, 1.2 wt% of Mn1.2 wt% of P, 0.01 wt% of S, 50 wt% of Cr50 wt%, 45.43 wt% of Ni45, 1.9 wt% of Nb1.4 wt% of Fe, 0.09 wt% of N, and 0.4 wt% of other inevitable impurity elements.
Example 3
A high corrosion-resistant nickel alloy welding wire comprises the following components: 0.05 wt% of C, 0.4 wt% of Si, 1.0 wt% of Mn1.0 wt% of P, 0.008 wt% of S, 49.5 wt% of CrC, 46.3 wt% of Ni46, 1.9 wt% of Nb1, 0.3 wt% of Fe0.08 wt% of N, and 0.454 wt% of other inevitable impurity elements.
Example 4
A high corrosion-resistant nickel alloy welding wire comprises the following components: 0.04 wt% of C, 0.3 wt% of Si, 0.5 wt% of Mn, 0.005 wt% of P, 0.005 wt% of S, 49.7 wt% of Cr49, 78 wt% of Ni47 wt%, 1.8 wt% of Nb1, 0.3 wt% of Fe, 0.05 wt% of N, and 0.3 wt% of other inevitable impurity elements.
The preparation steps of the high corrosion-resistant nickel alloy welding wire of each embodiment are as follows:
(1) alloy smelting: proportioning according to the mass percentage of each component of the welding wire, putting the raw materials into a vacuum induction furnace for smelting, and then pouring into an electrode rod;
(2) electroslag remelting: adopting electroslag remelting equipment, polishing the surface of an electrode bar, inserting the electrode bar into slag for remelting, wherein the slag adopts Na2CO3－SiO2－CaCO3Slag system, cutting off power and cooling for 5-10min, removing ingots, and cooling to normal temperature to obtain alloy ingots; na (Na)2CO3－SiO2－CaCO3Na in slag system270% by weight of CO3, SiO220% by weight of CaCO3The content of (B) is 10% by weight;
(3) forging: heating the alloy ingot in a heating furnace with the initial temperature of less than or equal to 600 ℃, heating to 1200-1250 ℃, preserving heat for 1 hour, forging into an alloy blank, and cooling to normal temperature;
(4) hot rolling treatment: heating the alloy blank to 1100-1150 ℃ for hot rolling, hot rolling into wire rods, and cooling to normal temperature in air;
(5) acid washing and grinding: pickling the wire rod with a pickling solution, and then finishing and polishing; the acid washing solution is HNO3-mixed solution of HF-HCl, in which HNO3The concentration of (A) is 5%, the concentration of HF is 5%, and the concentration of HCl is 20%;
(6) cold drawing: and (3) gradually thinning the wire rod by adopting the existing cold drawing process through multi-pass drawing (drawing-annealing-drawing), thus obtaining the nickel alloy welding wire.
The tensile strength and the yield strength of the high-corrosion-resistance nickel alloy welding wires of the embodiments 1 to 4 are detected by using a conventional method in the field under the condition that the temperature is T =20 ℃, wherein the yield strength is not less than 590MPa, and the tensile strength is not less than 830 MPa.
The corrosion resistance test of the high corrosion resistance nickel alloy welding wires of the examples 1 to 4 is carried out by adopting the method of ASTM G28-A, the test time is 120 hours, and the corrosion rate is less than or equal to 0.08 mm/a.
Claims (7)
1. A high corrosion-resistant nickel alloy welding wire is characterized by comprising the following components: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, and the content of Ni is 45-47 wt%.
2. The high corrosion resistant nickel alloy welding wire of claim 1, wherein the nickel alloy welding wire comprises the following components: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, the content of Ni is 45-47 wt%, and the content of Nb is 1.8-2.0 wt%.
3. The high corrosion resistant nickel alloy welding wire of claim 1, wherein the nickel alloy welding wire comprises the following components: C. si, Mn, P, S, Cr, Ni, Nb, Fe, N, and other unavoidable impurity elements; wherein, the content of Cr is 49-50 wt%, the content of Ni is 45-47 wt%, the content of Nb is 1.8-2.0 wt%, and the content of N is 0.05-0.1 wt%.
4. The high corrosion resistant nickel alloy welding wire of claim 1, wherein the nickel alloy welding wire comprises the following components: less than or equal to 0.08 percent of C, less than or equal to 0.7 percent of Si, less than or equal to 1.5 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, 49-50 percent of Cr, 45-47 percent of Ni, 1.8-2.0 percent of Nb0, less than or equal to 0.5 percent of Fe, 0.05-0.1 percent of N, and less than or equal to 0.5 percent of other inevitable impurity elements.
5. The method for preparing the high corrosion-resistant nickel alloy welding wire according to any one of claims 1 to 4, comprising the steps of:
(1) alloy smelting: proportioning according to the mass percentage of each component of the welding wire, putting the raw materials into a vacuum induction furnace for smelting, and then pouring into an electrode rod;
(2) electroslag remelting: adopting electroslag remelting equipment, polishing the surface of an electrode bar, inserting the electrode bar into slag for remelting, wherein the slag adopts Na2CO3－SiO2－CaCO3Slag system, cutting off power and cooling for 5-10min, removing ingots, and cooling to normal temperature to obtain alloy ingots;
(3) forging: heating the alloy ingot in a heating furnace with the initial temperature of less than or equal to 600 ℃, heating to 1200-1250 ℃, preserving heat for 1 hour, forging into an alloy blank, and cooling to normal temperature;
(4) hot rolling treatment: heating the alloy blank to 1100-1150 ℃ for hot rolling, hot rolling into wire rods, and cooling to normal temperature in air;
(5) acid washing and grinding: pickling the wire rod with a pickling solution, and then finishing and polishing;
(6) cold drawing: and (3) gradually thinning the wire rod by adopting the existing cold drawing process through multi-pass drawing (drawing-annealing-drawing), thus obtaining the nickel alloy welding wire.
6. The method for preparing the high corrosion-resistant nickel alloy welding wire according to claim 5, wherein Na is added2CO3－SiO2－CaCO3Na in slag system2The weight percentage of CO3 is 65-75%, SiO217-23% of CaCO3The content of the components is 8-11% by weight.
7. The method for preparing the nickel alloy welding wire with high corrosion resistance according to claim 5, wherein the nickel alloy welding wire is prepared by a method comprising a step of preparing a nickel alloy welding wire with high corrosion resistance according to the methodCharacterized in that the pickling solution is HNO3-mixed solution of HF-HCl, in which HNO3The concentration of (A) is 1-10%, the concentration of HF is 1-10%, and the concentration of HCl is 1-30%.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293992A (en) * | 1988-05-20 | 1989-11-27 | Nippon Steel Corp | High-ni alloy welding wire |
| JP2004276035A (en) * | 2003-03-12 | 2004-10-07 | Daido Steel Co Ltd | Welded joint excellent in resistance to caulking of metallic composite pipe |
| CN105108376A (en) * | 2015-08-13 | 2015-12-02 | 江苏新航合金科技有限公司 | Nickel alloy high-temperature-resistant welding wire |
| CN107042370A (en) * | 2017-03-16 | 2017-08-15 | 南京航空航天大学 | A kind of high-Cr Ni-base high-temperature alloy welding wire and preparation technology |
| CN108793170A (en) * | 2018-06-23 | 2018-11-13 | 新疆中诚硅材料有限公司 | A kind of ventilation slag making of industrial silicon is smelted combine pretreatment after acid cleaning process |
| CN109693055A (en) * | 2019-01-31 | 2019-04-30 | 江苏新航合金科技有限公司 | Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method |
-
2019
- 2019-09-24 CN CN201910904991.9A patent/CN112621023A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293992A (en) * | 1988-05-20 | 1989-11-27 | Nippon Steel Corp | High-ni alloy welding wire |
| JP2004276035A (en) * | 2003-03-12 | 2004-10-07 | Daido Steel Co Ltd | Welded joint excellent in resistance to caulking of metallic composite pipe |
| CN105108376A (en) * | 2015-08-13 | 2015-12-02 | 江苏新航合金科技有限公司 | Nickel alloy high-temperature-resistant welding wire |
| CN107042370A (en) * | 2017-03-16 | 2017-08-15 | 南京航空航天大学 | A kind of high-Cr Ni-base high-temperature alloy welding wire and preparation technology |
| CN108793170A (en) * | 2018-06-23 | 2018-11-13 | 新疆中诚硅材料有限公司 | A kind of ventilation slag making of industrial silicon is smelted combine pretreatment after acid cleaning process |
| CN109693055A (en) * | 2019-01-31 | 2019-04-30 | 江苏新航合金科技有限公司 | Oil-gas pipeline inner wall overlaying corrosion-and high-temp-resistant nickel alloy welding wire and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 陈裕川 等: "《焊接工艺评定手册》", 31 January 2000, 机械工业出版社 * |
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