Aluminum alloy seal structure local flame heating ultrasonic braze welding method

A sealing structure and flame heating technology, which is applied in metal processing, metal processing equipment, electric heating devices, etc., can solve the problems of unfavorable engineering application, complicated process, high cost, etc., and achieve high welding efficiency, simple process and good sealing performance.

Active Publication Date: 2015-05-20
SOUTHWEST JIAOTONG UNIV
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnetron sputtering to coat a layer of Cu on the surface of aluminum alloy is complex, costly, and time-consuming, which is not conducive to engineering applications.

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
  • Aluminum alloy seal structure local flame heating ultrasonic braze welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as figure 1 As shown, the embodiment of the present invention is carried out according to the following steps: a, before brazing, polish the surface of the aluminum alloy cover plate 3 and the surface of the box body 1 to be brazed with sandpaper, and wipe and clean it with acetone; b, the low-temperature Sn-based brazing The material 5 is placed on the side of the lapped end of the aluminum alloy sealing surface; c, the brazing material 5 is locally reciprocally heated with the gas flame 2 to melt and maintain the liquid state, but the base metal is not heated; d, applying ultrasonic vibration , wherein the ultrasonic vibration frequency is 18-25KHz, the amplitude is 4-20 μm, the ultrasonic introduction position is on the upper plate of the sealed structure, and the ultrasonic wave is applied to each position for 0.1-60s, and the ultrasonic head 4 is moved to make the solder on the joint surface of the entire structure realize joint filling; e , After the ultrason...

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 aluminum alloy seal structure local flame heating ultrasonic braze welding method which is used for conducting sealing and braze welding encapsulation on aluminum alloy cavities of built-in electronic components. The aluminum alloy seal structure local flame heating ultrasonic braze welding method comprises the first step of polishing and clearing an aluminum alloy surface of a joint to be brazed through abrasive paper; the second step of placing low-temperature Sn-based brazing filler metal on one side of the lap joint end of an aluminum alloy sealing surface; the third step of conducting local reciprocating heating on the brazing filler metal through gas flame flow to make the brazing filler metal melt and maintain a liquid state, and no heating on parent metal; the fourth step of applying ultrasonic vibration on a cavity of the aluminum alloy to be welded; the fifth step of finishing sealing the test piece through natural cooing after the ultrasonic vibration is finished. According to the aluminum alloy seal structure local flame heating ultrasonic braze welding method, overall heating is not conducted when the aluminum alloy seal structure is welded, local heating is conducted only on the brazing filler metal area, heating on a sealing element is extremely small, and the electronic components in the sealing element are not affected by heat. The aluminum alloy seal structure local flame heating ultrasonic braze welding method has the advantages of being simple in technology, high in welding efficiency, and suitable for the engineering application.

Description

technical field [0001] The invention relates to a brazing process for an aluminum alloy sealing structure, in particular to a local flame heating ultrasonic brazing method for an aluminum alloy sealing structure. Background technique [0002] In the equipment of electronics, communication and other industries, some electronic components are required to be used in a specific environment, so these electronic components need to be sealed to avoid contamination of the device by dust in the air and pollution of harmful atmosphere in the environment, thus ensure its reliability. [0003] The aluminum alloy structural parts have the characteristics of high strength, low density and good corrosion resistance, so they are used in the sealing structure of electronic components. For example, high-frequency components such as aluminum waveguides, aluminum shielding boxes, and aluminum microstrip boxes are sealed by brazing processes. The first few steps of the brazing process of these...

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): B23K1/20B23K1/06B23K1/00
CPCB23K1/0016B23K1/06B23K1/19B23K1/206B23K3/043B23K2101/36B23K2103/10
Inventor 李远星朱宗涛陈辉杨涛何永攀
Owner SOUTHWEST JIAOTONG UNIV
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