CN112935622A - NiCu-7 nickel-based welding wire and preparation method and application thereof - Google Patents
NiCu-7 nickel-based welding wire and preparation method and application thereof Download PDFInfo
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- CN112935622A CN112935622A CN202110136074.8A CN202110136074A CN112935622A CN 112935622 A CN112935622 A CN 112935622A CN 202110136074 A CN202110136074 A CN 202110136074A CN 112935622 A CN112935622 A CN 112935622A
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- nickel
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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
- B23K35/02—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a NiCu-7 nickel-based welding wire and a preparation method and application thereof, belonging to the technical field of welding materials. The NiCu-7 nickel-based welding wire comprises, by mass, not more than 0.10% of C, 2.5-4.0% of Mn, not more than 1.0% of Fe, not more than 0.8% of Si, not more than 0.02% of P, not more than 0.01% of S, 28.5-32.0% of Cu, not more than 0.5% of Al, 2.0-3.0% of Ti and the balance of Ni. The welding wire takes Cu as a main additive element on the basis of Ni, and simultaneously adds a proper amount of trace element Ti to optimize components, so that the nickel-based welding wire can meet the service performance requirements of high-temperature-resistant and corrosion-resistant equipment after being welded; the content of harmful elements is reduced, so that the fluidity of the cladding metal can be improved, and the flatness of a welding bead is improved.
Description
Technical Field
The invention relates to the technical field of welding materials, in particular to a NiCu-7 nickel-based welding wire and a preparation method and application thereof.
Background
The NiCu-7 nickel-based welding wire is mainly used for nickel-copper alloy welding, composite steel nickel-copper composite surface welding or steel surface surfacing. The existing NiCu-7 nickel-based welding wire is difficult to meet the use performance requirements of high-temperature-resistant and corrosion-resistant equipment after welding, and the formed cladding metal has poor fluidity, so that the welding bead has the phenomena of accumulation, bending and the like, and the welding quality is influenced.
Disclosure of Invention
The invention aims to provide a NiCu-7 nickel-based welding wire and a preparation method and application thereof, and the NiCu-7 nickel-based welding wire can meet the service performance requirements of high-temperature-resistant and corrosion-resistant equipment after being welded, and a formed welding bead is smooth and high in quality.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a NiCu-7 nickel-based welding wire which comprises, by mass, not more than 0.10% of C, 2.5-4.0% of Mn, not more than 1.0% of Fe, not more than 0.8% of Si, not more than 0.02% of P, not more than 0.01% of S, 28.5-32.0% of Cu, not more than 0.5% of Al, 2.0-3.0% of Ti and the balance of Ni.
The invention provides a preparation method of the NiCu-7 nickel-based welding wire, which comprises the following steps:
preparing materials corresponding to the composition of the NiCu-7 nickel-based welding wire in the scheme;
carrying out vacuum smelting and electroslag remelting on the raw materials to obtain a billet;
rolling the billet into a wire rod;
tempering the wire rod to obtain a tempered wire rod;
and drawing and reducing the tempered wire rod to obtain the NiCu-7 nickel-based welding wire.
Preferably, the tempering temperature is 780-820 ℃, and the heat preservation time is 2-3 hours; the tempering treatment is performed in an air atmosphere.
Preferably, the wire rod has a diameter of 6.5 mm.
Preferably, the drawing reducing comprises: and drawing and reducing the diameter of the wire rod from 6.5mm to 4.5mm, 1.5mm and 1.2mm in sequence.
Preferably, when the drawing diameter is reduced to 4.5mm and 1.5mm, the method further comprises the step of carrying out online heat treatment on the wire rod obtained after the drawing diameter reduction.
Preferably, the temperature of the online heat treatment is 1020-1050 ℃; when the diameter of the wire is 4.5mm, the heat preservation time of the online heat treatment is 30-50 s; when the diameter of the wire is 1.5mm, the heat preservation time of the online heat treatment is 15-30 s.
Preferably, the in-line heat treatment is performed under an ammonia decomposition air atmosphere.
Preferably, the diameter of the NiCu-7 nickel-based welding wire is 0.8-1.2 mm.
The invention provides application of the NiCu-7 nickel-based welding wire prepared by the NiCu-7 nickel-based welding wire or the NiCu-7 nickel-based welding wire prepared by the preparation method in nickel-copper alloy welding, composite steel nickel-copper composite surface welding or steel surface surfacing.
The invention provides a NiCu-7 nickel-based welding wire which comprises, by mass, not more than 0.10% of C, 2.5-4.0% of Mn, not more than 1.0% of Fe, not more than 0.8% of Si, not more than 0.02% of P, not more than 0.01% of S, 28.5-32.0% of Cu, not more than 0.5% of Al, 2.0-3.0% of Ti and the balance of Ni. The welding wire takes Cu as a main additive element on the basis of Ni, and simultaneously adds a proper amount of trace element Ti to optimize components, so that the nickel-based welding wire can meet the service performance requirements of high-temperature-resistant and corrosion-resistant equipment after being welded; the content of harmful elements is reduced, so that the fluidity of the cladding metal can be improved, and the flatness of a welding bead is improved.
Drawings
FIG. 1 is a graph showing the effect of NiCu-7 nickel-based welding wires prepared in example 1 and comparative example 1 on MIG welding of stainless steel.
Detailed Description
The invention provides a NiCu-7 nickel-based welding wire which comprises, by mass, not more than 0.10% of C, 2.5-4.0% of Mn, not more than 1.0% of Fe, not more than 0.8% of Si, not more than 0.02% of P, not more than 0.01% of S, 28.5-32.0% of Cu, not more than 0.5% of Al, 2.0-3.0% of Ti and the balance of Ni.
The NiCu-7 nickel-based welding wire comprises, by mass, not more than 0.10% of C, preferably not more than 0.08% of C, and more preferably not more than 0.05%.
The NiCu-7 nickel-based welding wire comprises, by mass, 2.5-4.0% of Mn, preferably 2.8-3.7% of Mn, and more preferably 3.0-3.5% of Mn.
The NiCu-7 nickel-based welding wire comprises, by mass, Fe which is less than or equal to 1.0%, preferably less than or equal to 0.8%, and more preferably less than or equal to 0.5%.
The NiCu-7 nickel-based welding wire comprises, by mass, not more than 0.8% of Si, preferably not more than 0.6%, and more preferably not more than 0.5%.
The NiCu-7 nickel-based welding wire comprises, by mass, P which is less than or equal to 0.02%, preferably less than or equal to 0.01%, and more preferably less than or equal to 0.001%.
The NiCu-7 nickel-based welding wire comprises, by mass, not more than 0.01% of S, preferably not more than 0.005% of S, and more preferably not more than 0.001% of S.
The NiCu-7 nickel-based welding wire comprises, by mass, 28.5-32.0% of Cu, preferably 29.0-31.0% and more preferably 29.5-30.5%.
The NiCu-7 nickel-based welding wire comprises, by mass, not more than 0.5% of Al, preferably not more than 0.3% of Al, and more preferably not more than 0.1% of Al.
In the invention, the C, the Fe, the Si, the P, the S and the Al are used as impurity elements, the upper limit of the elements is limited, the purity of the nickel-based welding wire is favorably improved, and the fluidity and the comprehensive performance of the cladding metal are improved.
The NiCu-7 nickel-based welding wire comprises 2.0-3.0% of Ti, preferably 2.2-2.8%, and more preferably 2.4-2.6% in percentage by mass. By adding a proper amount of trace element Ti, the nickel-based welding wire can meet the service performance requirements of high-temperature-resistant and corrosion-resistant equipment after being welded.
The NiCu-7 nickel-based welding wire provided by the invention comprises the balance of Ni.
The invention provides a preparation method of the NiCu-7 nickel-based welding wire in the scheme, which comprises the following steps:
preparing materials corresponding to the composition of the NiCu-7 nickel-based welding wire in the scheme;
carrying out vacuum smelting and electroslag remelting on the raw materials to obtain a billet;
rolling the billet into a wire rod;
tempering the wire rod to obtain a tempered wire rod;
and drawing and reducing the tempered wire rod to obtain the NiCu-7 nickel-based welding wire.
The invention is prepared according to the composition of the NiCu-7 nickel-based welding wire in the scheme. The invention has no special requirements on the batching process, and the batching process known in the field can be adopted.
After the batching is finished, the invention carries out vacuum smelting and electroslag remelting on all raw materials to obtain a billet.
The invention has no special requirements on the processes of vacuum smelting and electroslag remelting, and the vacuum smelting and electroslag remelting processes well known in the field can be adopted.
After the billet is obtained, the billet is rolled into a wire rod by the invention. The rolling process of the present invention has no special requirements, and the rolling process known in the art can be adopted. In the present invention, the diameter of the wire rod is preferably 6.5 mm.
After the wire rod is obtained, the invention carries out tempering treatment on the wire rod to obtain the tempered wire rod. In the invention, the tempering temperature is preferably 780-820 ℃, and more preferably 790-810 ℃. In the invention, the heat preservation time of the tempering treatment is preferably 2-3 hours, and more preferably 2.5 hours. In the present invention, the tempering treatment is preferably performed in an air atmosphere. The invention utilizes tempering treatment to facilitate the processing of welding wires.
After the tempered wire rod is obtained, the tempered wire rod is subjected to drawing and reducing to obtain the NiCu-7 nickel-based welding wire.
In the present invention, the drawing reducing preferably includes: drawing and reducing the diameter of the wire rod from 6.5mm to 4.5mm, 1.5mm and 1.2mm in sequence; when the diameter of the welding wire is less than 1.2mm, the invention preferably further comprises the step of continuously drawing and reducing the diameter of the wire with the diameter of 1.2mm to a target diameter. In the invention, the diameter of the NiCu-7 nickel-based welding wire is preferably 0.8-1.2 mm, and more preferably 0.8mm, 1.0mm or 1.2 mm.
The present invention preferably performs an on-line heat treatment on the wire rod obtained after the drawing reduction when the drawing reduction is performed to 4.5mm and 1.5 mm.
In the invention, the temperature of the online heat treatment is independently preferably 1020-1050 ℃, and more preferably 1030-1040 ℃. The invention selects proper heat preservation time according to the diameter of the wire rod obtained after drawing and reducing. In the invention, when the diameter of the wire is 4.5mm, the heat preservation time of the online heat treatment is preferably 30-50 s, and more preferably 35-45 s; when the diameter of the wire is 1.5mm, the heat preservation time of the online heat treatment is preferably 15-30 s, and more preferably 20-25 s. The present invention preferably performs the on-line heat treatment in an ammonia decomposition air atmosphere. The invention is beneficial to reducing drawing through on-line heat treatment, and prevents the welding wire from breaking or cracking in the drawing process.
The invention provides application of the NiCu-7 nickel-based welding wire prepared by the NiCu-7 nickel-based welding wire or the NiCu-7 nickel-based welding wire prepared by the preparation method in nickel-copper alloy welding, composite steel nickel-copper composite surface welding or steel surface surfacing.
The welding conditions of the present invention are not particularly limited, and welding conditions well known in the art may be used. In an embodiment of the invention, when the NiCu-7 nickel-based welding wire is used for surfacing of steel surfaces, particularly for MIG welding of stainless steel, the welding conditions are as follows: the protective gas is pure Ar, the gas flow is 22mL/min, and the welding current is 190A.
The following examples are provided to illustrate the NiCu-7 Ni-based welding wire and the preparation method and application thereof in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
In this embodiment, the NiCu-7 nickel-based welding wire comprises, by mass: 0.02% of C, 3.10% of Mn, 0.62% of Fe, 0.42% of Si, 0.011% of P, 0.006% of S, Cu 29.94%, 0.11% of Al, 2.37% of Ti and the balance of Ni.
(1) Preparing chemical components according to a formula;
(2) carrying out vacuum smelting and electroslag remelting on the chemical components in the step (1) to obtain a billet; rolling the billet into a wire rod, wherein the diameter of the wire rod is 6.5 mm;
(3) the rolled wire rod is subjected to tempering heat treatment and then to reducing drawing,
the first stage is as follows: carrying out tempering heat treatment on the wire rod from phi 6.5mm at the temperature of 800 ℃ for 2.5 hours, and then carrying out drawing reducing from phi 6.50mm to phi 4.50 mm;
and a second stage: carrying out on-line heat treatment on a wire rod with the diameter of phi 4.5mm in an ammonia decomposition air atmosphere, carrying out on-line heat treatment at 1035 ℃ for 42s, and then continuously carrying out drawing and reducing to the diameter of phi 1.5mm from the diameter of phi 4.5 mm;
and a third stage: and (3) carrying out online heat treatment on the wire rod with the diameter of 1.5mm in an ammonia decomposition air atmosphere, carrying out online heat treatment at 1030 ℃ for 22s, and then continuously carrying out drawing and reducing to obtain the NiCu-7 nickel-based welding wire from the drawing and reducing of the diameter of 1.5mm to the diameter of 1.2 mm.
Comparative example 1
The difference from the embodiment 1 is that the NiCu-7 nickel-based welding wire comprises the following components: 0.11% of C, 2.12% of Mn2, 1.97% of Fe, 0.92% of Si, 0.018% of P, 0.010% of S, 28.37% of Cu, 0.42% of Al, 1.67% of Ti and the balance of Ni.
And (3) performance testing:
the NiCu-7 nickel-based welding wires prepared in example 1 and comparative example 1 were used for MIG welding of stainless steel using pure Ar as a shielding gas, a gas flow rate of 22mL/min, a welding current of 190A, and the welding results are shown in FIG. 1. Two welding seams on the right side of the drawing 1 are the welding seams formed in the embodiment 1, and the rest welding seams are the welding seams formed by the welding wires in the comparative example 1, and the drawing 1 shows that the welding wire cladding metal welding seam adopting the embodiment 1 is smooth and flat, has natural transition and good molten iron fluidity; the weld bead formed by the welding wire of comparative example 1 was high in pile, bent, and poor in fluidity.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The NiCu-7 nickel-based welding wire is characterized by comprising, by mass, not more than 0.10% of C, 2.5-4.0% of Mn, not more than 1.0% of Fe, not more than 0.8% of Si, not more than 0.02% of P, not more than 0.01% of S, 28.5-32.0% of Cu, not more than 0.5% of Al, 2.0-3.0% of Ti and the balance of Ni.
2. The method for preparing the NiCu-7 nickel-based welding wire of claim 1, comprising the steps of:
batching according to the composition of the NiCu-7 nickel-based welding wire of claim 1;
carrying out vacuum smelting and electroslag remelting on the raw materials to obtain a billet;
rolling the billet into a wire rod;
tempering the wire rod to obtain a tempered wire rod;
and drawing and reducing the tempered wire rod to obtain the NiCu-7 nickel-based welding wire.
3. The preparation method according to claim 2, wherein the tempering temperature is 780-820 ℃ and the holding time is 2-3 hours; the tempering treatment is performed in an air atmosphere.
4. The method of claim 2, wherein the wire rod has a diameter of 6.5 mm.
5. The method of manufacturing according to claim 4, wherein the drawing reducing includes: and drawing and reducing the diameter of the wire rod from 6.5mm to 4.5mm, 1.5mm and 1.2mm in sequence.
6. The production method according to claim 5, wherein when the drawing reduction is performed to 4.5mm and 1.5mm, the method further comprises performing an in-line heat treatment on the wire rod obtained after the drawing reduction.
7. The preparation method according to claim 6, wherein the temperature of the in-line heat treatment is 1020-1050 ℃; when the diameter of the wire is 4.5mm, the heat preservation time of the online heat treatment is 30-50 s; when the diameter of the wire is 1.5mm, the heat preservation time of the online heat treatment is 15-30 s.
8. The method of claim 7, wherein the in-line heat treatment is performed under an ammonia decomposition air atmosphere.
9. The method for preparing the NiCu-7 nickel-based welding wire according to claim 2, wherein the NiCu-7 nickel-based welding wire has a diameter of 0.8-1.2 mm.
10. The NiCu-7 nickel-based welding wire prepared by the preparation method of claim 1 or any one of claims 2 to 9 is applied to nickel-copper alloy welding, composite steel nickel-copper composite surface welding or steel surface surfacing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110136074.8A CN112935622A (en) | 2021-02-01 | 2021-02-01 | NiCu-7 nickel-based welding wire and preparation method and application thereof |
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| CN202110136074.8A CN112935622A (en) | 2021-02-01 | 2021-02-01 | NiCu-7 nickel-based welding wire and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953716A (en) * | 2021-11-01 | 2022-01-21 | 江苏九洲新材料科技有限公司 | Preparation method of nickel-based alloy welding wire |
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Application publication date: 20210611 |