CN107081536A - A kind of municipal rail train is with antifatigue high toughness Al-alloy welding wire - Google Patents
A kind of municipal rail train is with antifatigue high toughness Al-alloy welding wire Download PDFInfo
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- CN107081536A CN107081536A CN201710321038.2A CN201710321038A CN107081536A CN 107081536 A CN107081536 A CN 107081536A CN 201710321038 A CN201710321038 A CN 201710321038A CN 107081536 A CN107081536 A CN 107081536A
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- welding wire
- alloy welding
- rail train
- high toughness
- mass fraction
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a kind of municipal rail train with antifatigue high toughness Al-alloy welding wire, its mass fraction includes following components：Mg, Si, Fe, Zn, Mn, Cr, Cu, Ti, Sr, Mo, W, V, Nb, Zr, Sc, Er, Ce, Y, Gd, remaining is Al and inevitable impurity.A kind of municipal rail train proposed by the present invention is with antifatigue high toughness Al-alloy welding wire, and rationally, arc stability is good during welding for its component, appearance of weld is attractive in appearance, with mother metal bond strength height and performance stabilization, welding point has high intensity, high tenacity, and fatigue resistance is excellent.
Description
Technical field
The present invention relates to welding wire technology field, more particularly to a kind of municipal rail train is with antifatigue high toughness Al-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 selection to material is continued to optimize, on the premise of use requirement is met, and steel is substituted with aluminium alloy
Material, mitigates the weight of itself for train, and lowering energy consumption has very great meaning.At present, municipal rail train aluminium alloy car
The material that body is mainly used has Al-Mg, Al-Mg-Si, Al-Zn-Mg system alloy, using common ER5356 and ER5183 welding wires
During welding, its strength of joint often only has the 60%-70% of strength of parent, and toughness and fatigue resistance are poor, and this will be unfavorable at a high speed
The security of train operation.Therefore, being badly in need of a kind of municipal rail train that is used for of development has high intensity, high tenacity, fatigue resistance excellent
Aluminium alloy welding wire.
The content of the invention
The technical problem existed based on background technology, the present invention is proposed a kind of municipal rail train and closed with antifatigue high tenacity aluminium
Gold solder silk, rationally, arc stability is good during welding, and appearance of weld is attractive in appearance for its component, high and performance is stable with mother metal bond strength,
Welding point has high intensity, high tenacity, and fatigue resistance is excellent.
A kind of municipal rail train proposed by the present invention is included with the following group with antifatigue high toughness Al-alloy welding wire, its mass fraction
Point：Mg：0.6-1%, Si：0.5-0.65%, Fe：0.25-0.4%, Zn：0.2-0.3%, Mn：0.5-0.7%, Cr：0.08-
0.15%th, Cu：0.2-0.35%, Ti：0.1-0.15%, Sr：0.03-0.06%, Mo：0.1-0.3%, W：0.1-0.2%, V：
0.4-0.6%, Nb：0.05-0.12%, Zr：0.15-0.35%, Sc：0.1-0.22%, Er：0.06-0.15%, Ce：0.04-
0.08%th, Y：0.02-0.06%, Gd：0.02-0.06%, remaining is Al and inevitable impurity.
In embodiment, Mg mass fraction can also for 0.65%, 0.7%, 0.75%, 0.8%, 0.85%,
0.9%, Si mass fraction can also may be used also for 0.52%, 0.55%, 0.58%, 0.6%, 0.62%, Fe mass fraction
Think 0.28%, 0.3%, 0.33%, 0.36%, 0.38%, Zn mass fraction can also for 0.22%, 0.24%,
0.25%th, 0.26%, 0.28%, Mn mass fraction can also for 0.54%, 0.58%, 0.6%, 0.62%, 0.65%,
0.68%, Cr mass fraction can also may be used also for 0.09%, 0.1%, 0.11%, 0.12%, 0.14%, Cu mass fraction
Think 0.23%, 0.26%, 0.28%, 0.3%, 0.32%, Ti mass fraction can also for 0.11%, 0.12%,
0.13%th, 0.14%, Sr mass fraction can also for 0.035%, 0.04%, 0.045%, 0.05%, 0.055%, Mo
Mass fraction can also for 0.14%, 0.18%, 0.2%, 0.22%, 0.25%, 0.28%, W mass fraction can also be
0.11%th, 0.13%, 0.15%, 0.17%, 0.19%, V mass fraction can also for 0.42%, 0.46%, 0.48%,
0.5%th, 0.52%, 0.56%, Nb mass fraction can also for 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, Zr
Mass fraction can also for 0.18%, 0.2%, 0.24%, 0.28%, 0.32%, Sc mass fraction can also be
0.12%th, 0.14%, 0.16%, 0.18%, 0.2%, Er mass fraction can also for 0.07%, 0.08%, 0.09%,
0.1%th, 0.12%, Ce mass fraction can also for 0.05%, 0.055%, 0.06%, 0.065%, 0.07%, Y quality
Fraction can also be 0.025%, 0.03%, 0.04%, 0.045%, 0.05%, Gd mass fraction can also be 0.03%,
0.035%th, 0.04%, 0.045%, 0.05%, remaining is Al and inevitable impurity.
Preferably, its mass fraction includes following components：Mg：0.7-0.9%, Si：0.55-0.6%, Fe：0.3-
0.35%th, Zn：0.22-0.28%, Mn：0.55-0.65%, Cr：0.1-0.14%, Cu：0.25-0.3%, Ti：0.11-
0.14%th, Sr：0.04-0.05%, Mo：0.15-0.25%, W：0.13-0.17%, V：0.45-0.55%, Nb：0.08-
0.1%th, Zr：0.2-0.3%, Sc：0.12-0.2%, Er：0.08-0.13%, Ce：0.05-0.07%, Y：0.03-0.05%,
Gd：0.03-0.05%, remaining is Al and inevitable impurity.
Preferably, the mass fraction of Mg, Zn in aluminium alloy welding wire meets relationship below：3%≤Mg/Zn≤3.5%.
Preferably, the mass fraction of Zr, Sc, Er in aluminium alloy welding wire meets relationship below：0.38%≤0.5 × Zr
+ Sc+Er≤0.5%.
Preferably, the mass fraction of Ti, Sr in aluminium alloy welding wire meets relationship below：0.16%≤Ti+Sr≤
0.18%.
Preferably, welding condition is as follows：Argon flow amount is 16-17.5L/min, and weldingvoltage is 24-26V, welding
Electric current is 210-220A, and speed of welding is 3-5mm/s.
The present invention is made using conventional fabrication process.
By adjusting the content of Mg, Zn in aluminium alloy welding wire in the present invention, Mg, Zn is set to meet 3%≤Mg/Zn≤3.5%
Functional relation, stress corrosion resistant is the most excellent with splitting resistance, and Mg, Zn generate hardening constituent MgZn in seam organization2With
Al3Mg2, and it is in Dispersed precipitate, promotes the refinement of seam organization, makes seam organization the most tiny, to weld seam thinning effect most
It is good, effectively improve strength of welded joint and toughness；By adjusting Zr, Sc, Er content in aluminium alloy welding wire, and make Zr, Sc, Er full
Foot 0.38%≤0.5 × Zr+Sc+Er≤0.5% functional relation, improve aluminium alloy welding wire postwelding welding point it is micro-
Tissue, Zr, Sc, Er form hardening constituent AlZr in weld seam3、AlSc3、AlEr3, the Dispersed precipitate in seam organization, raising tie again
Brilliant temperature, core is provided for Heterogeneous Nucleation of the α-Al matrixes in crystallization process, significantly refinement as cast condition weld grain tissue, is had
Effect improves precipitation size and the distribution of hardening constituent and secondary phase, interrupts pine-tree structure, improves dislocation density, improves welding point
Tensile strength, yield strength and toughness, improve the anti-fatigue performance of welding point；By adjusting Ti, Sr in aluminium alloy welding wire
Content, the functional relation for making it meet 0.16%≤Ti+Sr≤0.18%, Ti, Sr play synergy as alterant, become
Matter effect substantially, is effectively improved the form and size of hardening constituent and nonmetal inclusion, purifies α-Al in seam organization, refinement weld seam
Dendrite and eutectic silicon, it is to avoid nonequilibrium freezing causes weld seam uneven and non-equilibrium group caused by nonequilibrium freezing organizational effect
Knit and occur with thick precipitated phase, improve the institutional framework in weld seam, tensile strength, the surrender for significantly improving welding point are strong
Degree, anti-impact resistance and temperature tolerance；By adjusting the content of Er, Ce, Y, Gd in aluminium alloy welding wire, enable aluminum alloy to welding wire have it is good
Good deoxidation ability of dehydrogenation, is effectively improved the form of field trash and distribution in deposited metal, and stomata and seminess occurs in reduction,
The welding performance of aluminium alloy welding wire is improved, arc stability is good during welding, splashed small, appearance of weld is attractive in appearance, the removability of slag can be good.This
A kind of antifatigue high toughness Al-alloy welding wire of municipal rail train that invention is proposed, its component is reasonable, and arc stability is good during welding,
Appearance of weld is attractive in appearance, and with mother metal bond strength height and performance stabilization, welding point has high intensity, high tenacity, and fatigue resistance
It is excellent.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of municipal rail train proposed by the present invention is included with the following group with antifatigue high toughness Al-alloy welding wire, its mass fraction
Point：Mg：0.6%th, Si：0.65%th, Fe：0.25%th, Zn：0.3%th, Mn：0.5%th, Cr：0.15%th, Cu：0.2%th, Ti：
0.15%th, Sr：0.03%th, Mo：0.3%th, W：0.1%th, V：0.6%th, Nb：0.05%th, Zr：0.35%th, Sc：0.1%th, Er：
0.15%th, Ce：0.04%th, Y：0.06%th, Gd：0.02%, remaining is Al and inevitable impurity.
Embodiment 2
A kind of municipal rail train proposed by the present invention is included with the following group with antifatigue high toughness Al-alloy welding wire, its mass fraction
Point：Mg：1%th, Si：0.5%th, Fe：0.4%th, Zn：0.2%th, Mn：0.7%th, Cr：0.08%th, Cu：0.35%th, Ti：0.1%th,
Sr：0.06%th, Mo：0.1%th, W：0.2%th, V：0.4%th, Nb：0.12%th, Zr：0.15%th, Sc：0.22%th, Er：0.06%th,
Ce：0.08%th, Y：0.02%th, Gd：0.06%, remaining is Al and inevitable impurity.
Embodiment 3
A kind of municipal rail train proposed by the present invention is included with the following group with antifatigue high toughness Al-alloy welding wire, its mass fraction
Point：Mg：0.8%th, Si：0.58%th, Fe：0.32%th, Zn：0.25%th, Mn：0.6%th, Cr：0.12%th, Cu：0.28%th, Ti：
0.12%th, Sr：0.04%th, Mo：0.2%th, W：0.15%th, V：0.5%th, Nb：0.09%th, Zr：0.25%th, Sc：0.16%th, Er：
0.1%th, Ce：0.06%th, Y：0.04%th, Gd：0.04%, remaining is Al and inevitable impurity.
Wherein, welding condition is as follows：Argon flow amount is 16.5L/min, and weldingvoltage is 25V, and welding current is
215A, speed of welding is 4mm/s.
Embodiment 4
A kind of municipal rail train proposed by the present invention is included with the following group with antifatigue high toughness Al-alloy welding wire, its mass fraction
Point：Mg：0.7%th, Si：0.6%th, Fe：0.3%th, Zn：0.22%th, Mn：0.55%th, Cr：0.14%th, Cu：0.25%th, Ti：
0.14%th, Sr：0.04%th, Mo：0.25%th, W：0.13%th, V：0.55%th, Nb：0.08%th, Zr：0.3%th, Sc：0.12%th, Er：
0.13%th, Ce：0.05%th, Y：0.05%th, Gd：0.03%, remaining is Al and inevitable impurity.
Wherein, welding condition is as follows：Argon flow amount is 16L/min, and weldingvoltage is 24V, and welding current is 210A,
Speed of welding is 3mm/s.
Embodiment 5
A kind of municipal rail train proposed by the present invention is included with the following group with antifatigue high toughness Al-alloy welding wire, its mass fraction
Point：Mg：0.9%th, Si：0.55%th, Fe：0.35%th, Zn：0.28%th, Mn：0.65%th, Cr：0.1%th, Cu：0.3%th, Ti：
0.11%th, Sr：0.05%th, Mo：0.15%th, W：0.17%th, V：0.45%th, Nb：0.1%th, Zr：0.2%th, Sc：0.2%th, Er：
0.08%th, Ce：0.07%th, Y：0.03%th, Gd：0.05%, remaining is Al and inevitable impurity.
Wherein, welding condition is as follows：Argon flow amount is 17.5L/min, and weldingvoltage is 26V, and welding current is
220A, speed of welding is 3-5mm/s.
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 (6)
1. a kind of municipal rail train is with antifatigue high toughness Al-alloy welding wire, it is characterised in that its mass fraction includes following components：
Mg：0.6-1%, Si：0.5-0.65%, Fe：0.25-0.4%, Zn：0.2-0.3%, Mn：0.5-0.7%, Cr：0.08-
0.15%th, Cu：0.2-0.35%, Ti：0.1-0.15%, Sr：0.03-0.06%, Mo：0.1-0.3%, W：0.1-0.2%, V：
0.4-0.6%, Nb：0.05-0.12%, Zr：0.15-0.35%, Sc：0.1-0.22%, Er：0.06-0.15%, Ce：0.04-
0.08%th, Y：0.02-0.06%, Gd：0.02-0.06%, remaining is Al and inevitable impurity.
2. municipal rail train is with antifatigue high toughness Al-alloy welding wire according to claim 1, it is characterised in that its mass fraction
Including following components：Mg：0.7-0.9%, Si：0.55-0.6%, Fe：0.3-0.35%, Zn：0.22-0.28%, Mn：0.55-
0.65%th, Cr：0.1-0.14%, Cu：0.25-0.3%, Ti：0.11-0.14%, Sr：0.04-0.05%, Mo：0.15-
0.25%th, W：0.13-0.17%, V：0.45-0.55%, Nb：0.08-0.1%, Zr：0.2-0.3%, Sc：0.12-0.2%,
Er：0.08-0.13%, Ce：0.05-0.07%, Y：0.03-0.05%, Gd：0.03-0.05%, remaining is Al and inevitable
Impurity.
3. municipal rail train according to claim 1 or claim 2 is with antifatigue high toughness Al-alloy welding wire, it is characterised in that Mg, Zn exist
Mass fraction in aluminium alloy welding wire meets relationship below：3%≤Mg/Zn≤3.5%.
4. municipal rail train according to claim 1 or claim 2 is with antifatigue high toughness Al-alloy welding wire, it is characterised in that Zr, Sc,
Mass fractions of the Er in aluminium alloy welding wire meets relationship below：0.38%≤0.5 × Zr+Sc+Er≤0.5%.
5. municipal rail train according to claim 1 or claim 2 is with antifatigue high toughness Al-alloy welding wire, it is characterised in that Ti, Sr exist
Mass fraction in aluminium alloy welding wire meets relationship below：0.16%≤Ti+Sr≤0.18%.
6. municipal rail train according to claim 1 or claim 2 is with antifatigue high toughness Al-alloy welding wire, it is characterised in that Welder
Skill parameter is as follows：Argon flow amount is 16-17.5L/min, and weldingvoltage is 24-26V, and welding current is 210-220A, welding speed
Spend for 3-5mm/s.
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| CN201710321038.2A CN107081536A (en) | 2017-05-09 | 2017-05-09 | A kind of municipal rail train is with antifatigue high toughness Al-alloy welding wire |
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Cited By (6)
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| CN109207815A (en) * | 2018-09-30 | 2019-01-15 | 天长市正牧铝业科技有限公司 | A kind of baseball bat corrosion-resistant shock resistance aluminium alloy extrusions and preparation method thereof |
| CN109295358A (en) * | 2018-09-30 | 2019-02-01 | 天长市正牧铝业科技有限公司 | A kind of baseball bat high-tenacity and shock-resistance aluminium alloy extrusions and preparation method thereof |
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| CN111906470A (en) * | 2019-05-10 | 2020-11-10 | 通用线缆技术公司 | Aluminum welding alloy with improved properties |
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| RU2828805C1 (en) * | 2023-12-28 | 2024-10-21 | Общество с ограниченной ответственностью "Институт легких материалов и технологий" | Aluminium alloy and wire aluminium material |
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| CN109207815A (en) * | 2018-09-30 | 2019-01-15 | 天长市正牧铝业科技有限公司 | A kind of baseball bat corrosion-resistant shock resistance aluminium alloy extrusions and preparation method thereof |
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Application publication date: 20170822 |
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