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Aluminum alloy welding wire for automobile fuel tank and preparation method of aluminum alloy welding wire

A technology of aluminum alloy welding wire and automobile fuel tank, which is applied in the direction of welding equipment, metal processing equipment, welding medium, etc., and can solve the problems of damage to the weld, impact resistance of the weld of the fuel tank, low fatigue resistance, oil leakage, etc.

Inactive Publication Date: 2017-12-01
安徽飞弧焊业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the automobile industry, people have higher and higher requirements for the lightness of automobiles. Replacing steel fuel tanks with aluminum alloy fuel tanks can reduce the weight of automobiles. However, due to the low impact resistance and fatigue resistance of the fuel tank welds, Long-term turbulence and the impact of oil solvents will often cause damage to the welding joints, resulting in oil leakage and potential safety hazards

Method used

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  • Aluminum alloy welding wire for automobile fuel tank and preparation method of aluminum alloy welding wire

Examples

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Effect test

Embodiment 1

[0015] An aluminum alloy welding wire for an automobile fuel tank, the raw materials of which include by weight percentage: Mg: 6.5%, Mn: 0.65%, Ti: 0.17%, Be: 0.003%, Fe: 0.3%, B: 0.045%, Cr: 0.235% , Si: 0.35%, Zr: 0.2%, V: 0.175%, Sc: 0.25%, Cu≤0.1%, Zn≤0.2%, individual content of other impurity elements≤0.05%, total content of other impurity elements≤0.1%, and other The amount is Al.

[0016] The above-mentioned method for preparing aluminum alloy welding wire for automobile fuel tanks comprises the following steps: melting the aluminum ingot, adding the remaining raw materials for smelting, refining, and casting to obtain a round ingot satisfying the above-mentioned composition range; homogenizing, extruding, and Annealing and drawing treatment are used to obtain aluminum alloy welding wire for automobile fuel tanks.

Embodiment 2

[0018] An aluminum alloy welding wire for an automobile fuel tank, the raw materials of which include by weight percentage: Mg: 6.3%, Mn: 0.8%, Ti: 0.16%, Be: 0.005%, Fe: 0.2%, B: 0.08%, Cr: 0.22% , Si: 0.4%, Zr: 0.16%, V: 0.2%, Sc: 0.2%, Cu≤0.1%, Zn≤0.2%, the single content of other impurity elements≤0.05%, the total content of other impurity elements≤0.1%, the rest The amount is Al.

[0019] The above-mentioned method for preparing aluminum alloy welding wire for automobile fuel tanks comprises the following steps: melting the aluminum ingot, adding the remaining raw materials for smelting, refining, and casting to obtain a round ingot satisfying the above-mentioned composition range; homogenizing, extruding, and The aluminum alloy welding wire for automobile fuel tank was obtained by annealing and drawing. The homogenization temperature was 475°C, the homogenization temperature was 24h, the extrusion temperature was 440°C, the extrusion ratio was 40, the annealing temperatu...

Embodiment 3

[0021] An aluminum alloy welding wire for an automobile fuel tank, the raw materials of which include by weight percentage: Mg: 6.7%, Mn: 0.5%, Ti: 0.18%, Be: 0.0001%, Fe: 0.4%, B: 0.01%, Cr: 0.25% , Si: 0.3%, Zr: 0.25%, V: 0.15%, Sc: 0.3%, Cu≤0.1%, Zn≤0.2%, the single content of other impurity elements≤0.05%, the total content of other impurity elements≤0.1%, the rest The amount is Al.

[0022] The above-mentioned method for preparing aluminum alloy welding wire for automobile fuel tanks comprises the following steps: melting the aluminum ingot, adding the remaining raw materials for smelting, refining, and casting to obtain a round ingot satisfying the above-mentioned composition range; homogenizing, extruding, and The aluminum alloy welding wire for automobile fuel tank was obtained by annealing and drawing. The homogenization temperature was 455°C, the homogenization temperature was 36h, the extrusion temperature was 430°C, the extrusion ratio was 45, the annealing tempera...

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Abstract

The invention discloses an aluminum alloy welding wire for an automobile fuel tank. The raw materials of the aluminum alloy welding wire comprise, by weight, 6.3-6.7% of Mg, 0.5-0.8% of Mn, 0.16-0.18% of Ti, 0.0001-0.005% of Be, 0.2-0.4% of Fe, 0.01-0.08% of B, 0.22-0.25% of Cr, 0.3-0.4% of Si, 0.16-0.25% of Zr, 0.15-0.2% of V, 0.2-0.3% of Sc, less than or equal to 0.1% of Cu, less than or equal to 0.2% of Zn, less than or equal to 0.05% of the single content of other impurity elements, less than or equal to 0.1% of the total content of other impurity elements and the balance Al. The invention further discloses a preparation method of the aluminum alloy welding wire for the automobile fuel tank. The aluminum alloy welding wire for the automobile fuel tank is compact in welding joint tissue, good in impact resistance, toughness and tension strength, good in crack resistance, and good in fatigue resistant property.

Description

technical field [0001] The invention relates to the field of welding wire technology, in particular to an aluminum alloy welding wire for an automobile fuel tank and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, people have higher and higher requirements for the lightness of automobiles. Replacing steel fuel tanks with aluminum alloy fuel tanks can reduce the weight of automobiles. However, due to the low impact resistance and fatigue resistance of the fuel tank welds, Long-term turbulence and the impact of oil solvents often cause damage to the welding joints, resulting in oil leakage and potential safety hazards. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes an aluminum alloy welding wire for automobile fuel tanks and a preparation method thereof. The present invention has fine weld structure, good impact resistan...

Claims

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Application Information

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IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/0261B23K35/288B23K35/40
Inventor 卢齐元
Owner 安徽飞弧焊业股份有限公司
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