Super arc MIG+ laser double-sided composite high-speed welding method for titanium and aluminum

A welding method and super arc technology, used in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problem of high equipment requirements, achieve excellent mechanical properties, reduce equipment requirements, and interface with reliable effects.

Pending Publication Date: 2022-02-18
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some researchers try to use laser penetration welding to weld titanium and aluminum, but this requires the use of high-power lasers for high-speed welding, which requires high equipment

Method used

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  • Super arc MIG+ laser double-sided composite high-speed welding method for titanium and aluminum
  • Super arc MIG+ laser double-sided composite high-speed welding method for titanium and aluminum
  • Super arc MIG+ laser double-sided composite high-speed welding method for titanium and aluminum

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Effect test

Embodiment 1

[0030] Embodiment 1: High-speed welding of pure titanium and pure aluminum

[0031] The industrial pure titanium (TA2) plate with a thickness of 2.5mm is butt welded with the industrial pure aluminum (1060) plate with a thickness of 2.5mm. The length of the welded titanium plate and the aluminum plate are both 150mm and the width is 100mm.

[0032] The specific welding process steps are as follows:

[0033] 1) Before welding, use an angle grinder to make a 35°V-shaped groove on the side of the titanium plate, and the blunt side is about 0.2mm;

[0034] 2) Finely grind the surface of the titanium plate to be welded with a wire brush until the metallic luster is completely exposed, then soak it with an aqueous solution of 40% nitric acid and 5% hydrofluoric acid for 3 minutes, and finally rinse it with anhydrous acetone and dry it in the air. First soak the aluminum plate and welding wire with an aqueous solution of 10% sodium hydroxide at 60°C for 3 minutes; after taking it ou...

Embodiment 2

[0039] Embodiment 2: High-speed welding of pure titanium and pure aluminum

[0040] The titanium alloy (TC4) plate with a thickness of 3mm is butt welded with the antirust aluminum alloy (5A06) plate with a thickness of 3mm. The length of the welded titanium plate and the aluminum plate are both 150mm and the width is 100mm.

[0041] The specific welding process steps are as follows:

[0042] 1) Before welding, use an angle grinder to open a 35°V-shaped groove on the side of the titanium plate, and the height of the blunt edge is about 0.3mm;

[0043] 2) Finely grind the surface of the titanium plate to be welded with a wire brush until the metallic luster is completely exposed, then soak it with an aqueous solution of 40% nitric acid and 5% hydrofluoric acid for 3 minutes, and finally rinse it with anhydrous acetone and dry it in the air. First soak the aluminum plate and welding wire with an aqueous solution of 10% sodium hydroxide at 60°C for 3 minutes; after taking it out...

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Abstract

The invention discloses a super arc MIG+ laser double-sided composite high-speed welding method for titanium and aluminum. A V-shaped groove is formed in the side edge of a titanium plate through an angle grinder before welding, then oil stains and oxidation films on the surfaces of the titanium plate, an aluminum plate and a welding wire are removed, and to-be-welded surface is smooth, dry and free of impurities; the titanium plate and the aluminum plate are fixed in a butt joint mode through a tool clamp, and double-face composite high-speed welding is conducted; after welding is finished, the welded workpiece is cooled to the room temperature under the natural condition; and after cooling, the tool clamp is opened, and the workpiece is taken down. Welding is conducted on the front face through automatic wire feeding super-wire arc MIG welding, and welding is conducted on the back face through laser welding synchronously, so that the welding efficiency is improved, the structure property difference in the workpiece thickness direction is reduced, and a titanium / aluminum welding joint with the excellent mechanical property is obtained.

Description

technical field [0001] The invention relates to a high-speed and high-efficiency welding method for dissimilar metals, in particular to a super-power arc MIG+laser double-sided composite high-speed welding method for titanium and aluminum, which belongs to the technical field of composite welding of metal materials. Background technique [0002] Both titanium and aluminum are lightweight, high-strength, corrosion-resistant metal materials, and are widely used in aerospace and high-end automotive industries. Titanium / aluminum lightweight welded structures have broad application prospects. However, due to the metallurgical incompatibility of titanium and aluminum and the problem of brittle intermetallic compounds, it is difficult to weld titanium and aluminum using traditional fusion welding technology. People try to weld titanium and aluminum together by friction stir welding, laser welding, etc., and obtain joints with better mechanical properties, but they face problems suc...

Claims

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Application Information

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IPC IPC(8): B23K26/348B23K26/60B23K26/70
CPCB23K26/348B23K26/60B23K26/70
Inventor 魏守征饶文姬宋琳玲刘李宾李志勇张英乔李玉新王建宏张发端
Owner ZHONGBEI UNIV
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