CN107214432A - A kind of welding point high intensity cracking resistance aluminium alloy welding wire - Google Patents
A kind of welding point high intensity cracking resistance aluminium alloy welding wire Download PDFInfo
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- CN107214432A CN107214432A CN201710329496.0A CN201710329496A CN107214432A CN 107214432 A CN107214432 A CN 107214432A CN 201710329496 A CN201710329496 A CN 201710329496A CN 107214432 A CN107214432 A CN 107214432A
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- welding
- aluminium alloy
- high intensity
- cracking resistance
- welding wire
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Classifications
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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
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
- B23K35/288—Al as the principal constituent with Sn or Zn
Abstract
The invention discloses a kind of welding point high intensity cracking resistance aluminium alloy welding wire, it includes following components by mass fraction：Mg, B, Li, Cu, Si, Ti, Cr, Mn, Fe, V, Sr, Na, Zr, Nb, Mo, Pr, Ce, Nd, remaining is Al and inevitable impurity.A kind of welding point proposed by the present invention high intensity cracking resistance aluminium alloy welding wire, its component is reasonable, splashed during welding small, deposited metal dense structure, pore-free occurs with crackle, welding point has high intensity, splitting resistance good, with mother metal bond strength it is big the advantages of, improve hardware overall performance.
Description
Technical field
The present invention relates to welding wire technology field, more particularly to a kind of welding point high intensity cracking resistance aluminium alloy welding wire.
Background technology
Aluminium alloy has good specific strength, corrosion resistance and electrical and thermal conductivity, while having excellent formability
And weldability, in fields such as space flight and aviation, ship automobile, machine-building, military chemical industry by extensive use.With life and state
People's economy is continued to develop, and the demand to aluminum alloy welding connection member is increasing, and the selection to material is continued to optimize, butt welding silk quality
The requirement of amount is more and more stricter, and the quality of welding quality, the height of welding efficiency are determined by welding material, welding procedure,
Quality inside aluminium alloy welding wire is heavily dependent on the quality of primary aluminum material, and current aluminium alloy welding wire also has component not
Rationally, splash big during welding, stomata easily occurs in deposited metal, and strength of welded joint is small, splitting resistance and corrosion-resistant, influence
The normal of hardware is used.
The content of the invention
The technical problem existed based on background technology, the present invention is proposed a kind of welding point high intensity cracking resistance aluminium and closed
Gold solder silk, its component rationally, is splashed small during welding, and deposited metal dense structure, pore-free occurs with crackle, and welding point has
High intensity, splitting resistance are good, with mother metal bond strength it is big the advantages of, improve hardware overall performance.
The present invention proposes a kind of welding point high intensity cracking resistance aluminium alloy welding wire, and it is included following by mass fraction
Component：Mg：2-3%, B：0.15-0.25%, Li：0.1-0.2%, Cu：0.2-0.35%, Si：0.25-0.4%, Ti：0.2-
0.3%th, Cr：0.12-0.22%, Mn：0.25-0.4%, Fe：0.15-0.25%, V：0.2-0.3%, Sr：0.1-0.2%,
Na：0.15-0.25%, Zr：0.05-0.15%, Nb：0.02-0.1%, Mo：0.15-0.25%, Pr：0.06-0.12%, Ce：
0.15-0.25%, Nd：0.05-0.12%, remaining is Al and inevitable impurity.
In specific embodiment, Mg mass fraction can also for 2.1%, 2.3%, 2.5%, 2.6%, 2.8%, B matter
Amount fraction can also be 0.17%, 0.19%, 0.2%, 0.22%, 0.24%, Li mass fraction can also be 0.11%,
0.13%th, 0.15%, 0.17%, 0.19%, Cu mass fraction can also for 0.22%, 0.25%, 0.28%, 0.3%,
0.32%, Si mass fraction can also may be used also for 0.28%, 0.3%, 0.32%, 0.35%, 0.38%, Ti mass fraction
Think 0.22%, 0.24%, 0.25%, 0.26%, 0.28%, Cr mass fraction can also for 0.14%, 0.16%,
0.18%th, 0.2%, Mn mass fraction can also for 0.28%, 0.3%, 0.32%, 0.35%, 0.38%, Fe quality point
Number can also be 0.17%, 0.19%, 0.2%, 0.22%, 0.24%, V mass fraction can also be 0.21%, 0.23%,
0.25%th, 0.27%, 0.29%, Sr mass fraction can also be 0.12%, 0.14%, 0.15%, 0.16%, 0.18%,
Na mass fraction can also for 0.17%, 0.19%, 0.2%, 0.22%, 0.24%, Zr mass fraction can also be
0.06%th, 0.08%, 0.1%, 0.12%, 0.14%, Nb mass fraction can also for 0.03%, 0.04%, 0.06%,
0.07%th, 0.09%, Mo mass fraction can also for 0.17%, 0.19%, 0.2%, 0.22%, 0.24%, Pr quality
Fraction can also be 0.07%, 0.08%, 0.09%, 0.1%, 0.11%, Ce mass fraction can also be 0.17%,
0.19%th, 0.2%, 0.22%, 0.24%, Nd mass fraction can also for 0.07%, 0.08%, 0.09%, 0.1%,
0.11%, remaining is Al and inevitable impurity.
Preferably, the mass fraction of B, Li, Ti in aluminium alloy welding wire meets relationship below：1.4%≤(B+Li)/Ti
≤ 2%.
Preferably, Sr, Na weight ratio are 1:1.5-2.
Preferably, the mass fraction of Cu, Cr, Mn, V, Mo in aluminium alloy welding wire meets relationship below：0.8%≤Cr+
Mn+V+Mo≤1.1%.
Preferably, it includes following components by mass fraction：Mg：2.2-2.8%, B：0.18-0.22%, Li：0.12-
0.18%th, Cu：0.25-0.3%, Si：0.3-0.35%, Ti：0.22-0.28%, Cr：0.14-0.2%, Mn：0.3-
0.35%th, Fe：0.18-0.22%, V：0.22-0.28%, Sr：0.12-0.18%, Na：0.18-0.22%, Zr：0.08-
0.12%th, Nb：0.04-0.08%, Mo：0.18-0.22%, Pr：0.08-0.1%, Ce：0.18-0.22%, Nd：0.08-
0.1%, remaining is Al and inevitable impurity.
Preferably, welding condition is as follows：Gas flow is 17-18.5L/min, and weldingvoltage is 22-25V, welding
Electric current is 190-210A, and wire feed rate is 11-12.5m/min, and speed of welding is 0.65-0.8m/min.
Preferably, welding condition is as follows：Gas flow is 17.5-18L/min, and weldingvoltage is 23-24V, welding
Electric current is 195-205A, and wire feed rate is 11.5-12m/min, and speed of welding is 0.7-0.75m/min.
The present invention is made using conventional fabrication process.
Have well for deposited metal by adjusting the content of Cu, Cr, Mn, V and Mo in aluminium alloy welding wire in the present invention
The mechanical properties such as tensile strength, yield strength, hardness and toughness are laid a good foundation, while improving the weldability of aluminium alloy welding wire
Energy；By adjusting B, Li, Ti content, because the density of B, Li, Ti three are different, the diffusion velocity in welding fluid is different, by
The difference of oxidational losses situation, to ensure deposited metal by quick effective and permanent modification effect, it is to avoid Li, B are rotten easy
Decline, it is to avoid the longer shortcoming of Ti deterioration latency stages is used alone, controls B, Li, Ti content, makes to meet function between three
Relational expression：1.4%≤(B+Li)/Ti≤2%, B, Li, Ti three coordinate, and deteriorating time is long, and modification effect substantially, promotes heterogeneous
The formation of forming core core, prevents the growth and aggregation of tiny crystal grains, promotes cenotype nucleation, makes the overall crystal grain refinement of deposited metal,
And the hardening constituent Al of generation3Ti、Al3Li、TiB2It is evenly distributed in α-Al matrixes, as forming core substrate in α-Al matrixes, shows
The crystal grain in refinement seam organization is write, recrystallization temperature in deposited metal is improved, dislocation movement by slip is hindered, effectively mitigates the danger of impurity
Evil, makes Copper component in deposited metal less and more tiny, while the thick gill shape β phases of appearance are prevented effectively from, so as to improve welding
The corrosion resistance and tensile strength of joint, coordinate with Sr, Na, and Sr, Na weight ratio meet 1:1.5-2, further enhance molten
The modification effect of metallisation, improves tissue morphology in welding point, reduces the generation of primary silicon and Eutectic Silicon in Al-Si Cast Alloys in deposited metal, makes
Tissue in weld seam is presented hypoeutectic state, and pin hole rate reaches minimum in weld seam, and Tissue distribution is more uniform in welding point,
There is segregation phenomena in suppression, and the toughness of welding point is also significantly improved while strength of welded joint and hardness is improved, is resisted
Creep properties, corrosion resistance, effectively prevent that welding point is cracking, metaboly.A kind of welding point proposed by the present invention is used
High intensity cracking resistance aluminium alloy welding wire, its component rationally, is splashed small during welding, deposited metal dense structure, pore-free and crackle
Occur, welding point has high intensity, splitting resistance good, with mother metal bond strength it is big the advantages of, improve the entirety of hardware
Performance.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of welding point proposed by the present invention high intensity cracking resistance aluminium alloy welding wire, it is included following by mass fraction
Component：Mg：2%th, B：0.25%th, Li：0.1%th, Cu：0.35%th, Si：0.25%th, Ti：0.3%th, Cr：0.12%th, Mn：
0.4%th, Fe：0.15%th, V：0.3%th, Sr：0.1%th, Na：0.25%th, Zr：0.05%th, Nb：0.1%th, Mo：0.15%th, Pr：
0.12%th, Ce：0.15%th, Nd：0.12%, remaining is Al and inevitable impurity.
Embodiment 2
A kind of welding point proposed by the present invention high intensity cracking resistance aluminium alloy welding wire, it is included following by mass fraction
Component：Mg：3%th, B：0.15%th, Li：0.2%th, Cu：0.2%th, Si：0.4%th, Ti：0.2%th, Cr：0.22%th, Mn：0.25%th,
Fe：0.25%th, V：0.2%th, Sr：0.2%th, Na：0.15%th, Zr：0.15%th, Nb：0.02%th, Mo：0.25%th, Pr：0.06%th,
Ce：0.25%th, Nd：0.05%, remaining is Al and inevitable impurity.
Embodiment 3
A kind of welding point proposed by the present invention high intensity cracking resistance aluminium alloy welding wire, it is included following by mass fraction
Component：Mg：2.5%th, B：0.2%th, Li：0.15%th, Cu：0.28%th, Si：0.32%th, Ti：0.25%th, Cr：0.16%th, Mn：
0.32%th, Fe：0.2%th, V：0.25%th, Sr：0.15%th, Na：0.2%th, Zr：0.1%th, Nb：0.06%th, Mo：0.2%th, Pr：
0.09%th, Ce：0.2%th, Nd：0.09%, remaining is Al and inevitable impurity.
Wherein, welding condition is as follows：Gas flow is 18L/min, and weldingvoltage is 24V, and welding current is 200A,
Wire feed rate is 12m/min, and speed of welding is 0.75m/min.
Embodiment 4
A kind of welding point proposed by the present invention high intensity cracking resistance aluminium alloy welding wire, it is included following by mass fraction
Component：Mg：2.2%th, B：0.22%th, Li：0.12%th, Cu：0.3%th, Si：0.3%th, Ti：0.28%th, Cr：0.14%th, Mn：
0.35%th, Fe：0.18%th, V：0.28%th, Sr：0.12%th, Na：0.22%th, Zr：0.08%th, Nb：0.08%th, Mo：0.18%th,
Pr：0.1%th, Ce：0.18%th, Nd：0.1%, remaining is Al and inevitable impurity.
Wherein, welding condition is as follows：Gas flow is 17L/min, and weldingvoltage is 22V, and welding current is 210A,
Wire feed rate is 11m/min, and speed of welding is 0.65m/min.
Embodiment 5
A kind of welding point proposed by the present invention high intensity cracking resistance aluminium alloy welding wire, it is included following by mass fraction
Component：Mg：2.8%th, B：0.18%th, Li：0.18%th, Cu：0.25%th, Si：0.35%th, Ti：0.22%th, Cr：0.2%th, Mn：
0.3%th, Fe：0.22%th, V：0.22%th, Sr：0.18%th, Na：0.18%th, Zr：0.12%th, Nb：0.04%th, Mo：0.22%th,
Pr：0.08%th, Ce：0.22%th, Nd：0.08%, remaining is Al and inevitable impurity.
Wherein, welding condition is as follows：Gas flow is 18.5L/min, and weldingvoltage is 25V, and welding current is
190A, wire feed rate is 12.5m/min, and speed of welding is 0.8m/min.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of welding point high intensity cracking resistance aluminium alloy welding wire, it is characterised in that it is included with the following group by mass fraction
Point：Mg：2-3%, B：0.15-0.25%, Li：0.1-0.2%, Cu：0.2-0.35%, Si：0.25-0.4%, Ti：0.2-
0.3%th, Cr：0.12-0.22%, Mn：0.25-0.4%, Fe：0.15-0.25%, V：0.2-0.3%, Sr：0.1-0.2%,
Na：0.15-0.25%, Zr：0.05-0.15%, Nb：0.02-0.1%, Mo：0.15-0.25%, Pr：0.06-0.12%, Ce：
0.15-0.25%, Nd：0.05-0.12%, remaining is Al and inevitable impurity.
2. welding point high intensity cracking resistance aluminium alloy welding wire according to claim 1, it is characterised in that B, Li, Ti exist
Mass fraction in aluminium alloy welding wire meets relationship below：1.4%≤(B+Li)/Ti≤2%.
3. welding point high intensity cracking resistance aluminium alloy welding wire according to claim 1, it is characterised in that Sr, Na weight
Amount is than being 1:1.5-2.
4. welding point high intensity cracking resistance aluminium alloy welding wire according to claim 1, it is characterised in that Cu, Cr, Mn,
The mass fraction of V, Mo in aluminium alloy welding wire meets relationship below：0.8%≤Cr+Mn+V+Mo≤1.1%.
5. welding point high intensity cracking resistance aluminium alloy welding wire according to claim 1, it is characterised in that it is by quality point
Number includes following components：Mg：2.2-2.8%, B：0.18-0.22%, Li：0.12-0.18%, Cu：0.25-0.3%, Si：
0.3-0.35%, Ti：0.22-0.28%, Cr：0.14-0.2%, Mn：0.3-0.35%, Fe：0.18-0.22%, V：0.22-
0.28%th, Sr：0.12-0.18%, Na：0.18-0.22%, Zr：0.08-0.12%, Nb：0.04-0.08%, Mo：0.18-
0.22%th, Pr：0.08-0.1%, Ce：0.18-0.22%, Nd：0.08-0.1%, remaining is Al and inevitable impurity.
6. the welding point high intensity cracking resistance aluminium alloy welding wire according to any one of claim 1 or 2-5, its feature exists
In welding condition is as follows：Gas flow is 17-18.5L/min, and weldingvoltage is 22-25V, and welding current is 190-
210A, wire feed rate is 11-12.5m/min, and speed of welding is 0.65-0.8m/min.
7. welding point high intensity cracking resistance aluminium alloy welding wire according to claim 6, it is characterised in that welding procedure is joined
Number is as follows：Gas flow is 17.5-18L/min, and weldingvoltage is 23-24V, and welding current is 195-205A, and wire feed rate is
11.5-12m/min, speed of welding is 0.7-0.75m/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110181192A (en) * | 2019-06-14 | 2019-08-30 | 新乡市和光科技有限公司 | A kind of arc-welding increasing material manufacturing Al alloy powder core filaments |
| US11958140B2 (en) | 2019-05-10 | 2024-04-16 | General Cable Technologies Corporation | Aluminum welding alloys with improved performance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11958140B2 (en) | 2019-05-10 | 2024-04-16 | General Cable Technologies Corporation | Aluminum welding alloys with improved performance |
| CN110181192A (en) * | 2019-06-14 | 2019-08-30 | 新乡市和光科技有限公司 | A kind of arc-welding increasing material manufacturing Al alloy powder core filaments |
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Application publication date: 20170929 |