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A kind of electron beam welding method of dissimilar metals of titanium alloy and red copper

A technology of electron beam welding and titanium alloy, which is applied in the direction of electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problem of low bonding strength of titanium-copper dissimilar metals, and achieve improved strength and reliability, improved bonding strength, The effect of improving connection reliability

Active Publication Date: 2019-01-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for electron beam welding of titanium-copper dissimilar metals, by realizing the controlled growth of brittle intermetallic compounds, greatly optimizing the weak bonding surface of the joint, so as to solve the problem of low bonding strength of titanium-copper dissimilar metals

Method used

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  • A kind of electron beam welding method of dissimilar metals of titanium alloy and red copper
  • A kind of electron beam welding method of dissimilar metals of titanium alloy and red copper
  • A kind of electron beam welding method of dissimilar metals of titanium alloy and red copper

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Embodiment 1

[0030] In the present embodiment, the electron beam adjacent welding method of titanium alloy TC4 and T2 red copper is carried out according to the following steps:

[0031] Use 280#, 400#, 600# mesh sandpaper to remove the oxide layer on the titanium copper surface to be welded and the surrounding 300mm area, and use acetone to clean the surface oil. Titanium-copper materials are TC4 and T2 red copper respectively, among which, the mass percentage of TC4 titanium alloy is composed of: Ti: 89.12%, Al: 6.42%, V: 4.30%, Fe: 0.05%, C: 0.03%; T2 red copper mass percentage group It becomes: Cu: ≥ 99.9%, O: 0.06%. Assemble the welded test plates, butt them tightly without opening grooves and gaps. Fix the docking test plate at the focal point or the lower focal point of the electron beam spot surface in the vacuum chamber, and the docking surface is parallel to the moving direction of the horizontal guide rail.

[0032] Extract the vacuum, and wait for the gun vacuum and chamber v...

Embodiment 2

[0040] In this embodiment, the electron beam welding method for titanium alloy TC4 and T2 red copper is carried out according to the following steps: use 280#, 400#, 600# mesh sandpaper to remove the titanium copper surface to be welded and the surface oxide layer of the surrounding 300mm area, and use acetone Carry out surface oil cleaning. Titanium-copper materials are TC4 and T2 red copper respectively, among which, the mass percentage of TC4 titanium alloy is composed of: Ti: 89.12%, Al: 6.42%, V: 4.30%, Fe: 0.05%, C: 0.03%; T2 red copper mass percentage group It becomes: Cu: ≥ 99.9%, O: 0.06%. Assemble the welded test plates, butt them tightly without opening grooves and gaps. Fix the docking test plate at the focal point or the lower focal point of the electron beam spot surface in the vacuum chamber, and the docking surface is parallel to the moving direction of the horizontal guide rail.

[0041] Extract the vacuum, and wait for the gun vacuum and chamber vacuum to r...

Embodiment 3

[0047] The electron beam adjacent welding method for titanium alloy TC4 and T2 red copper is carried out in the following steps:

[0048] Use 280#, 400#, 600# mesh sandpaper to remove the oxide layer on the titanium copper surface to be welded and the surrounding 300mm area, and use acetone to clean the surface oil. Titanium-copper materials are TC4 and T2 red copper respectively, among which, the mass percentage of TC4 titanium alloy is composed of: Ti: 89.12%, Al: 6.42%, V: 4.30%, Fe: 0.05%, C: 0.03%; T2 red copper mass percentage group It becomes: Cu: ≥ 99.9%, O: 0.06%. Assemble the welded test plates, butt them tightly without opening grooves and gaps. Fix the docking test plate at the focal point or the lower focal point of the electron beam spot surface in the vacuum chamber, and the docking surface is parallel to the moving direction of the horizontal guide rail.

[0049] Extract the vacuum, and wait for the gun vacuum and chamber vacuum to reach the welding condition...

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Abstract

The invention relates to a method for electron beam welding of titanium copper dissimilar metal, in particular to a method for electron beam welding of TC4 titanium alloy and T2 red copper. The method comprises the steps of first performing preparatory work before welding; finishing primary deflecting copper welding; using small beam to perform back centering welding quickly, and performing root forming intensification; finally on the basis of the primary welding and the secondary welding, using electron beam to perform welding close to one side of the titanium alloy. According to the welding method, the distribution and content of primary harmful orientation intermetallic compounds can be effectively controlled, and the strength and reliability of a welded joint are improved.

Description

technical field [0001] The invention relates to the field of dissimilar metal welding, in particular to a welding method of TC4 titanium alloy and T2 red copper. Background technique [0002] Composite structures of dissimilar metals are widely used in aerospace, shipbuilding, power industry and other fields. Titanium alloys are widely used in aerospace, petrochemical and other fields because of their strong heat resistance, high specific strength, good plasticity, toughness and corrosion resistance. Copper alloys have excellent electrical conductivity, thermal conductivity, and excellent corrosion resistance. Some copper alloys also have high strength and are used in many parts in the aerospace field. [0003] The welding of titanium-copper dissimilar metals can not only combine the material properties of each other to realize the multifunctionality of materials, but also explore high-strength titanium-copper joints as a transitional structure to solve the welding problems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/06
CPCB23K15/0033B23K15/0053B23K15/06B23K2103/18
Inventor 周琦郭顺彭勇罗添元向阳孔见王毅李洪强王希凯尹凡
Owner NANJING UNIV OF SCI & TECH