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High-strength composite aluminum alloy multi-strand stranded welding wire and stranded structure thereof

A technology of multi-strand stranded welding wire and aluminum alloy, applied in welding equipment, welding medium, metal processing equipment, etc., can solve the problems of difficulty in melting welding and lack of 7 series aluminum alloy, and achieve good wire feeding stability and increase Yield, effect of refining recrystallized grains

Pending Publication Date: 2022-08-09
HARBIN WELDING INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a high-strength composite aluminum alloy multi-strand welding wire and its stranding structure to solve the technical problem that the current lack of matching welding materials for the 7-series aluminum alloy makes it difficult to achieve fusion welding of the 7-series aluminum alloy

Method used

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  • High-strength composite aluminum alloy multi-strand stranded welding wire and stranded structure thereof
  • High-strength composite aluminum alloy multi-strand stranded welding wire and stranded structure thereof
  • High-strength composite aluminum alloy multi-strand stranded welding wire and stranded structure thereof

Examples

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Embodiment 1

[0037] Example 1 (see Figure 1-4 ): a high-strength composite aluminum alloy multi-strand stranded welding wire in this embodiment is a 1+3-strand stranded structure, and the structure is as follows figure 1 As shown, the 1+3 stranded structure is formed by twisting one welding wire in the center and three welding wires in the outer ring, the four welding wires are tangent to each other, and the one welding wire in the center is pure Zn Welding wire, the three welding wires in the outer ring are ER1100 welding wire, ER5083 welding wire and ER2319 welding wire, wherein the ratio of the diameter of pure Zn welding wire to ER1100 welding wire, ER5083 welding wire and ER2319 welding wire is 1:6.464:6.464:6.464;

[0038] The chemical composition and mass percentage of the 1+3 strand stranded structure high-strength composite aluminum alloy multi-strand stranded welding wire are shown in Table 1;

[0039] The above 1+3 stranded structure high-strength composite aluminum alloy mult...

Embodiment 2

[0042] Example 2 (see Figure 5-8 ): a high-strength composite aluminum alloy multi-strand stranded welding wire in this embodiment is a 1+3+3-strand stranded structure, the structure is as follows Figure 5As shown in the figure, the 1+3+3 stranded structure consists of 1 welding wire in the center, 3 welding wires in the second circle and 3 welding wires in the third circle, and the 3 welding wires in the second circle are stranded. The 1 welding wire in the center is wrapped, and the 4 welding wires are tangent to each other, and the 3 welding wires of the third circle are respectively circumscribed to the adjacent two of the 3 welding wires of the second circle, so The three welding wires in the third circle have the same diameter as the one in the center, the one in the center is pure Zn welding wire, the three welding wires in the second circle are all ER1100 welding wires, and the three welding wires in the third circle are ER1100 welding wires. The welding wires are p...

Embodiment 3

[0047] Example 3 (see Figure 9-12 ): a high-strength composite aluminum alloy multi-strand stranded welding wire in this embodiment is a 4×1+6-strand stranded structure, the structure is as follows Figure 9 As shown in the figure, the 4×1+6 stranded structure is formed by twisting 6 welding wires of the outer ring and 4 welding wires of the inner ring, and two adjacent ones of the 6 welding wires of the outer ring are tangent to each other , the adjacent 2 of the 4 welding wires of the inner ring are tangent to each other, the circumscribed circles of the 4 welding wires of the inner ring coincide with the inscribed circles of the 6 welding wires of the outer ring, and the 4 welding wires of the inner ring They are 2 pure Zn welding wires, 1 AZ91 Mg wire, and 1 pure Cu welding wire. The 6 welding wires in the outer ring are all ER1100 welding wires, of which 2 pure Zn welding wires are not adjacent. ER1100 welding wire and pure Zn welding wire, The diameter ratio of AZ91 Mg...

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Abstract

The invention discloses a high-strength composite aluminum alloy multi-strand stranded welding wire and a stranded structure thereof. The invention belongs to the field of welding materials. The technical problem that fusion welding of the 7-series aluminum alloy is difficult to achieve due to the fact that no welding material matched with the 7-series aluminum alloy exists at present is solved. The high-strength composite aluminum alloy multi-strand stranded welding wire comprises the following chemical components in percentage by mass: 5.8%-6.9% of Zn, 2.7%-3.2% of Mg, 1.8%-2.6% of Cu, 0.34%-0.52% of Cr, less than or equal to 0.8% of Fe, less than or equal to 0.7% of Si, less than or equal to 0.8% of Mn, less than or equal to 0.4% of Ti and the balance of Al. The stranded structure of the high-strength composite aluminum alloy multi-strand stranded welding wire is a 1 + 3 strand stranded structure, a 1 + 3 + 3 strand stranded structure or a 4 * 1 + 6 strand stranded structure. According to the novel Al-Zn-Mg-Cu multi-strand stranded welding wire for 7-series aluminum alloy welding, the defect that Al-Zn-Mg-Cu series superhard aluminum is difficult to draw into wires is overcome, development of the welding wire for Al-Zn-Mg-Cu welding is achieved through the design of a welding wire formula and a stranded structure, high-quality welding of the 7-series aluminum alloy is achieved, and a new thought is provided for preparation of the Al-Zn-Mg-Cu series superhard aluminum welding wire.

Description

technical field [0001] The invention belongs to the field of welding materials, and particularly relates to a high-strength composite aluminum alloy multi-strand stranded welding wire and its stranded structure. Background technique [0002] Lightweight is an important development direction in the fields of aerospace and rail transportation. Aluminum alloys are widely used due to their high specific strength and good machinability. 7 series aluminum alloys (such as 7050, 7075, 7475, 7085, etc.) belong to the Al-Zn-Mg-Cu series superhard aluminum alloys, which have the highest strength among the common aluminum alloys, so they are also one of the most widely used aluminum alloys. Although the 7-series aluminum alloy has high strength, its plasticity is poor. The traditional method of preparing welding wire by drawing processing cannot be smoothly processed into a special wire material for welding. Therefore, it is difficult for the 7-series aluminum alloy to achieve fusion we...

Claims

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Application Information

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IPC IPC(8): B23K35/40C22C21/10
CPCB23K35/40C22C21/10
Inventor 徐锴武鹏博黄瑞生方乃文郭枭李小宇徐玉君吕晓春李振华徐亦楠
Owner HARBIN WELDING INST LTD
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