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Welding wire for welding aircraft aluminum-lithium alloy fuselage panels

A technology of aluminum-lithium alloy and fuselage wall plate, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of weak weld alloy strengthening effect and inability to suppress thermal cracks well, and achieve Small spatter, good welding process performance, beautiful shape effect

Active Publication Date: 2018-09-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the existing welding wire has a weak alloy strengthening effect on the weld seam and cannot suppress hot crack defects well, and provides a welding wire used for welding aircraft aluminum-lithium alloy fuselage panels

Method used

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  • Welding wire for welding aircraft aluminum-lithium alloy fuselage panels
  • Welding wire for welding aircraft aluminum-lithium alloy fuselage panels
  • Welding wire for welding aircraft aluminum-lithium alloy fuselage panels

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specific Embodiment approach 1

[0015] Specific Embodiment 1: The welding wire used in this embodiment for welding aircraft aluminum-lithium alloy fuselage panels is composed of 6.35% to 7.20% Cu, 5.30% to 5.60% Si, 0.13% to 0.17% Ti, and 0.001% by weight. ~0.010% B, 0.10%~0.18% Zr, 0.12%~0.15% Fe and the rest Al.

specific Embodiment approach 2

[0016] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the welding wire used for welding aircraft aluminum-lithium alloy fuselage panels is composed of 6.4% to 7.10% Cu and 5.31% to 5.59% Si according to the weight percentage. , 0.14% Ti, 0.002% B, 0.11% Zr, 0.12% Fe and the balance of Al. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Specific embodiment three: the difference between this embodiment and one of the specific embodiments one or two is that the welding wire used for welding the aluminum-lithium alloy fuselage panel of the aircraft is composed of 6.5% to 7.05% Cu, 5.35% by weight. ~5.55% Si, 0.15% Ti, 0.003% B, 0.12% Zr, 0.13% Fe and the balance Al. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a welding wire used for welding plane aluminum-lithium alloy body wall boards and belongs to the field of welding materials. The wire used for welding the plane aluminum-lithium alloy body wall boards is made from, by weight, 6.35%-7.20% of Cu, 5.30%-5.60% of Si, 0.13%-0.17% of Ti, 0.001%-0.010% of B, 0.10%-0.18% of Zr, 0.12%-0.15% of Fe, and the balance Al. According to the wire used for welding the plane aluminum-lithium alloy body wall boards, the quality is stable, when a T-shaped structure of a 2060 / 2099 aluminum-lithium alloy body wall board is subjected to bilateral laser synchronous welding, the transverse tensile strength of seam metal is 400-436 MPa, the transverse shearing strength of the seam metal is 120-126 MPa, the longitudinal compressive strength of the seam metal is 262-272MPa, and all the strength can meet the strength requirement of the plane body wall boards and is superior to the strength level of wall boards welded through an ER4047 welding wire.

Description

technical field [0001] The invention relates to a welding wire used for welding aircraft aluminum-lithium alloy fuselage wall plates, belonging to the field of welding materials. Background technique [0002] There are a large number of T-shaped structures in the fuselage panels of aircraft, which were mainly connected by traditional riveting methods before. However, due to the low production efficiency of riveting, which greatly increases the weight of the fuselage and reduces the fuel economy of the aircraft, it is increasingly unable to meet the higher performance requirements for future aircraft. At present, double-sided laser simultaneous welding technology is one of the most ideal technologies to replace riveting. Airbus has successfully applied this technology to the manufacture of its A318, A380 and other models. Compared with the riveting process, the double-sided laser simultaneous welding not only improves production efficiency, but also greatly reduces the weigh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28
CPCB23K35/286B23K2103/10
Inventor 陈彦宾韩冰陶汪王伟明珠包仁东
Owner HARBIN INST OF TECH
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