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Moderately strong aluminum alloy welding material and application thereof

A welding material and aluminum alloy technology, which is applied in the direction of welding/cutting medium/material, welding equipment, welding medium, etc., can solve problems such as shortage, and achieve the goal of promoting the precipitation of strengthening phases, ensuring plasticity, and improving yield strength and tensile strength Effect

Inactive Publication Date: 2018-09-18
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Considering the lack of good welding consumables to obtain higher strength weldments today, a new aluminum alloy welding consumable has become a demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The medium-strength aluminum alloy welding material is prepared according to a specific process, specifically to prepare welding wire. The chemical composition of the medium-strength aluminum alloy welding material is recorded according to mass percentage: Mg: 5.12, Mn: 0.61, Zn: 0.32, Cu: 0.15, Fe: 0.18, Si: 0.18, Cr: 0.16, Zr: 0.12, Ti: 0.17, Be: 0.0002, Na: 0.0002, hydrogen content: 0.03ml / 100g Al, the rest is Al and some unavoidable impurity elements, among them, a single impurity ≤0.05, total impurity content ≤0.15.

[0020] The tensile strength of the welding wire of this embodiment is 361Mpa, and the elongation is 25%.

Embodiment 2

[0022] The medium-strength aluminum alloy welding material is prepared according to a specific process, specifically as welding wire. The chemical composition of the medium-strength aluminum alloy welding material is recorded by mass percentage: Mg: 6.45, Mn: 1.27, Zn: 0.88, Cu: 0.18, Fe: 0.26, Si: 0.28, Cr: 0.22, Zr: 0.22, Ti: 0.25, Be: 0.0004, Na: 0.0004, hydrogen content: 0.07ml / 100g Al, the rest is Al and some unavoidable impurity elements, among them, a single impurity ≤0.05, total impurity content ≤0.15.

[0023] The tensile strength of the welding wire of this embodiment is 368Mpa, and the elongation is 24%.

Embodiment 3

[0025] The medium-strength aluminum alloy welding material is prepared according to a specific process, specifically to prepare welding wire. The chemical composition of the medium-strength aluminum alloy welding material is recorded by mass percentage: Mg: 5.0, Mn: 1.10, Zn: 0.30, Cu: 0.10, Fe: 0.22, Si: 0.22, Cr: 0.22, Zr: 0.12, Ti: 0.10, Be: 0.0002, Na: 0.0002, hydrogen content: 0.01ml / 100g Al, the rest is Al and some unavoidable impurity elements, among them, a single impurity ≤0.05, total impurity content ≤0.15.

[0026] The welding wire of this embodiment has a tensile strength of 365Mpa and an elongation of 26%.

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Abstract

The invention discloses a moderately strong aluminum alloy welding material. The welding material comprises chemical components including 5.0-6.50 of Mg, 0.60-1.30 of Mn, smaller than or equal to 0.90of Zn, smaller than or equal to 0.20 of Cu, smaller than or equal to 0.30 of Fe, smaller than or equal to 0.30 of Si, smaller than or equal to 0.30 of Cr, smaller than or equal to 0.25 of Zr, smallerthan or equal to 0.25 of Ti, smaller than or equal to 0.0004 of Be, smaller than or equal to 0.0005% of Na, smaller than or equal to 0.08 ml / 100 g of hydrogen, Al and some inevitable impurity elements, wherein the single impurity is smaller than or equal to 0.05, and the total impurity content is smaller than or equal to 0.15. According to the welding material, the component content is controlledreasonably and strictly, by means of reasonable and scientific component matching and content fitting, the yield strength and the tensile strength of welded deposited metal are improved, the yield strength of the welded deposited metal can reach -165 MPa, the tensile strength can reach -335 MPa, meanwhile, plasticity can be ensured, and the welding material is particularly suitable for welding aluminum alloy sections in the fields of ship ocean engineering, rail traffic, cars and aerospace, and assists in increasing the speed of ships, G-series high-speed trains, cars and the aerospace vehicles.

Description

technical field [0001] The invention relates to the technical field of welding materials, in particular to a medium-strength aluminum alloy welding material and its application. Background technique [0002] With the continuous development of my country's transportation industry, the lightweight of marine engineering, rail transit, automobiles, aviation and other fields has become a trend and requirement. It is imperative to replace steel with lighter aluminum alloys. In the above fields, Al-Mg / Al-Mg-Si / Al-Mg-Zn series aluminum alloy materials are widely used because of their light weight, good strength, and easy forming. The interconnection of aluminum alloy materials often uses welding. When selecting welding materials, factors such as mechanical properties, corrosion resistance and bending properties should be fully considered. Therefore, when selecting welding wires, 5xxx aluminum alloy welding materials are usually used, such as ER5087, ER5356 and ER5183. Welding, usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28
CPCB23K35/286B23K35/288
Inventor 何建贤赵启忠杨鸿驰朱希一黄亮邓桂英覃珊
Owner 广西南南铝加工有限公司