Ultrasonic vibration-assisted heterogeneous metal rotary friction welding device and ultrasonic vibration-assisted heterogeneous metal rotary friction welding method

A rotary friction welding and rotary friction welding technology, applied in welding equipment, metal processing equipment, non-electric welding equipment, etc., can solve the uneven microstructure and performance, affect the service performance of heterogeneous metal composite structural parts, and the thickness of intermetallic compounds. The problem of uneven distribution along the radial direction can achieve the effect of uniform thickness distribution, uniform width and reducing rheological resistance.

Active Publication Date: 2019-08-02
DALIAN UNIV OF TECH
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the thickness of the intermetallic compound in the dissimilar metal rotary friction welded joint is unevenly distributed along the radial direction, which seriously affects the service performance of the heterogeneous metal composite structural parts. An effective solution to the problem of non-uniform performance

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 vibration-assisted heterogeneous metal rotary friction welding device and ultrasonic vibration-assisted heterogeneous metal rotary friction welding method
  • Ultrasonic vibration-assisted heterogeneous metal rotary friction welding device and ultrasonic vibration-assisted heterogeneous metal rotary friction welding method
  • Ultrasonic vibration-assisted heterogeneous metal rotary friction welding device and ultrasonic vibration-assisted heterogeneous metal rotary friction welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Ultrasonic-assisted rotational friction welding process of 5052 aluminum alloy and 304 stainless steel.

[0033] This embodiment is a process for ultrasonic-assisted rotary friction welding of 5052 aluminum alloy and 304 stainless steel, the welding process mainly includes the following steps:

[0034] Step 1, machining the welded workpiece of 5052 aluminum alloy and 304 stainless steel with a diameter of 25mm, and machining a welding end step of φ23×20mm on the surface side of the 304 stainless steel to be welded, and the surface roughness to be welded is Ra<1.6;

[0035] Step 2, clean the welding end face of 304 stainless steel: use #400, #800, #1200, #1500, #2000 sandpaper to polish the surface, immerse the polished workpiece surface in acetone and ultrasonically clean it for 5 minutes, and then dry it with cold air;

[0036] Step 3, fix the 304 stainless steel on the rotating part, the length beyond the rotating part is 20mm. The 5052 aluminum alloy is fixed on the...

Embodiment 2

[0043] Ultrasonic-assisted rotational friction welding process of 1060 pure aluminum and T2 copper.

[0044] Step 1, machining 1060 pure aluminum and T2 red copper welding workpiece with a diameter of 25mm, and processing it into a step of φ24×20mm on the side of the T2 red copper surface to be welded, and the roughness of the surface to be welded is Ra<1.6;

[0045] Step 2, clean the T2 red copper welding end face: use #400, #800, #1200, #1500, #2000 sandpaper to polish the surface, immerse the polished workpiece surface in acetone and ultrasonically clean it for 5 minutes, and then dry it with cold air;

[0046] Step 3, fix the T2 red copper on the rotating part, and the length beyond the rotating part is 20mm. The 1060 pure aluminum is fixed on the moving part, and the length beyond the moving part is 40mm. In addition, it is necessary to ensure that the central axis of the 1060 pure aluminum rod is consistent with that of the T2 copper rod;

[0047] Step 4, place the too...

Embodiment 3

[0053] Ultrasonic-assisted rotational friction welding process of TC4 titanium alloy and 1Cr18Ni9Ti stainless steel.

[0054] Step 1, machining a TC4 titanium alloy with a diameter of 16mm and a 1Cr18Ni9Ti stainless steel welding workpiece, and the surface roughness to be welded is Ra<1.6;

[0055] Step 2, clean the welding end face of 1Cr18Ni9Ti stainless steel: use #400, #800, #1200, #1500, #2000 sandpaper to polish the surface, immerse the polished workpiece in acetone and ultrasonically clean it for 5 minutes, and then dry it with cold air;

[0056] Step 3, fix the 1Cr18Ni9Ti stainless steel on the rotating part, and the length beyond the rotating part is 20mm. The TC4 titanium alloy is fixed on the moving part, and the length beyond the moving part is 30mm. In addition, it is necessary to ensure that the central axis of the TC4 titanium alloy rod is consistent with that of the 1Cr18Ni9Ti stainless steel rod;

[0057] Step 4, place the tool head of the ultrasonic generat...

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

PropertyMeasurementUnit
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a method of improving microstructure and performance of heterogeneous metal rotary friction welding head. An ultrasonic generator is fixed to a moving part of conventional rotary friction welding, and a plastic metal in an interface layer is driven by high frequency mechanical vibrating energy of ultrasonic waves to vibrate radially at high frequency, so that the radial rheologic resistance of the plastic metal is reduced, and the flowing ability of the plastic metal is enhanced. A circular motion is turned into a compound circumferential and linear motion in the rotaryfriction welding. The ultrasonic vibration-assisted rotary friction welding can increase strain and strain rate of soft metals near a welding interface, so that the grains on two sides of the interface are refined, and therefore, the residual stress in the welding process is released favorably and the mechanical property of a joint is improved.

Description

technical field [0001] The invention relates to a material connection technology, in particular to a process method for improving the microstructure and performance of a rotary friction welding joint of heterogeneous metals assisted by ultrasonic vibration. Background technique [0002] Compared with traditional fusion welding, rotary friction welding has the advantages of low heat input, high efficiency and energy saving, and can effectively control the formation of intermetallic compounds at the welding interface. It is especially suitable for welding dissimilar metals, such as: titanium / steel, aluminum / steel, aluminum / copper, Aluminum / magnesium etc. According to the change of friction torque with time, the rotary friction welding can be divided into three stages: heating stage, quasi-steady state stage and upsetting stage. In the heating stage of friction welding, the contact surface changes from elastic contact to viscoplastic contact, and the plastic ring begins to spr...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/12B23K20/26
Inventor 李鹏董红刚李艳光王帅
Owner DALIAN 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