Ultrasonic auxiliary vacuum electron beam welding method of aluminum and aluminum alloy

A vacuum electron beam and welding method technology, which is applied in the field of aluminum and aluminum alloys, can solve problems such as poor weld formation, reduced performance of welded joints, and burn-through, and achieve the effects of flexible introduction positions, improved welding quality, and high production efficiency

Inactive Publication Date: 2010-04-07
CHONGQING UNIV OF TECH
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. Large linear expansion coefficient: The linear expansion coefficient of aluminum is about twice that of steel, and the crystallization shrinkage rate during solidification is also very large. It is easy to produce welding deformation and internal stress during the welding process. Therefore, when welding aluminum alloys with high rigidity Cracks are prone to occur in the structure
[0008] 5. Low strength and plasticity at high temperature: At high temperature, the strength and plasticity of aluminum are so low that it cannot support the liquid metal and the weld is poorly formed, sometimes causing the weld metal to collapse or burn through
[0009] 6. Evaporation and burning loss of alloying elements: Some aluminum alloys contai...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic auxiliary vacuum electron beam welding method of aluminum and aluminum alloy
  • Ultrasonic auxiliary vacuum electron beam welding method of aluminum and aluminum alloy
  • Ultrasonic auxiliary vacuum electron beam welding method of aluminum and aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: as figure 2 and image 3 As shown, the aluminum alloy weldment 11 to be welded is the butt joint of two flat plate structures with a thickness of 10 mm. Clamp the two pieces of weldment 11 on the workbench and transmission system 12 in the vacuum welding chamber 3 through the clamp, apply the coupling agent 10 on the pressing surface of the ultrasonic introduction device 9, and then put the ultrasonic introduction device 9 through the pressure of the spring The mechanism is pressed onto the surface of a weld bead of one of the workpieces to be welded. Connect the signal wire 8 of the ultrasonic introduction device 9 to the vacuum sealing structure 7 of the lead wire, so that the ultrasonic vibration system inside and outside the vacuum chamber 3 is electrically connected, and the stabilized power supply 5 provides power for the ultrasonic generator 6 . Then close the vacuum welding chamber 3, pump the electron gun to a vacuum degree of 2.3×10 -3 Pa, va...

Embodiment 2

[0043] Embodiment 2: as figure 2 and Figure 4 shown, with image 3 Compared with the process flow shown, Figure 4 The process flow adds the electron beam remelting process assisted by ultrasonic waves. The aluminum alloy weldment 11 is a fillet joint between a horizontal plate with a thickness of 10mm and a vertical plate with a thickness of 10mm. Clamp the two pieces of weldment on the workbench and the transmission system 12 through the fixture, apply the coupling agent 10 on the pressing surface of the ultrasonic introduction device 9, and then press the ultrasonic introduction device 9 to the workpiece to be welded by the spring pressure mechanism The weld bead surface on one side of the transverse plate. Connect the signal wire 8 of the ultrasonic introduction device 9 to the lead-out vacuum sealing structure 7, so that the ultrasonic vibration generator 6 inside and outside the vacuum welding chamber 3 is electrically connected. Close the vacuum welding chamber 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an ultrasonic auxiliary vacuum electron beam welding method applied to aluminum and an aluminum alloy, which can solve the technical problem that the aluminum, the aluminum alloy and especially cast aluminum alloy generate cavity type defects such as air hole, cold laps and the like in the process of welding a vacuum electron beam so as to improve mechanical properties of welding joints. In the technology, structural load ultrasonic energy with certain frequency and certain amplitude is applied in the process of welding the vacuum electron beam, the ultrasonic frequency is between 15 and 50 kHz, and the amplitude is between 10 and 50 mu m. A molten pool and adjacent areas thereof generated by welding the vacuum electron beam are continuously oscillated to a certain extent, so that the cavity type defects such as the air hole, the cold laps and the like can be effectively eliminated in the process of welding to obtain high quality welding joints.

Description

technical field [0001] The invention relates to an ultrasonic-assisted vacuum electron beam welding method for aluminum alloys, which is suitable for welding aluminum and aluminum alloys, especially cast aluminum alloys. Background technique [0002] Aluminum and aluminum alloys are widely used in aviation, aerospace, automobiles, Locomotives, machinery manufacturing, shipbuilding, chemical industry, national defense and military and other fields have extremely important application value and broad application prospects. [0003] There are many methods that can be applied to aluminum and aluminum alloy welding, including gas welding, TIG welding, MIG welding, plasma arc welding, electron beam welding, laser welding, resistance welding, friction welding, diffusion welding, brazing and composite heat source welding, etc. Various methods have their different application occasions. Due to the unique physical and chemical properties of aluminum and aluminum alloys, such as easy ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B23K15/06B23K37/00B23K15/04B23K103/10
Inventor 罗怡杜长华许惠斌李春天伍光凤
Owner CHONGQING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap