Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Brazing method for aluminum alloy material

A technology of aluminum alloy material and brazing method, which is applied in the field of aluminum alloy welding, and can solve the problems of poor mass production and high flux cost

Inactive Publication Date: 2014-02-12
吴雅萍
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, since the cost of flux containing cesium is very high, there is a disadvantage of poor mass productivity

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A kind of brazing method of aluminum alloy material, uses the method for brazing of non-corrosive fluoride flux in inert gas atmosphere, when the starting flow temperature of solder is set as Tf, the starting flow temperature of flux is set as At Ts, the Tf is less than Ts, the difference is not more than 5 degrees; the brazing material and flux flow at the same time.

[0013] The weight percentage of magnesium in the aluminum alloy is 1.15%-1.35%. This is because when the Mg content is small, there is little reaction with the flux, and brazing can be performed even by conventional brazing methods. In addition, when the magnesium content is too large, it reacts rapidly with fluorine in the flux during brazing heating to form a high-melting point compound such as magnesium fluoride, thereby hindering brazing properties.

[0014] The difference between the solidus temperature and the liquidus temperature of the solder is within 30°C.

[0015] The difference between the ...

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 relates to a brazing method for an aluminum alloy material. According to the method provided by the invention, a non-corrosive fluoride soldering flux is adopted in brazing in an inert gas environment, wherein the initial flow temperature of a brazing filler metal is set as Tf and the initial flow temperature of the soldering flex is set as Ts, the Tf is less than Ts, and the difference of the Tf and the Ts is not more than 5 DEG G; the brazing filler metal and the soldering flex simultaneously flow.

Description

technical field [0001] The invention belongs to the field of aluminum alloy welding, and specifically refers to a non-corrosive brazing method for aluminum alloy materials containing magnesium. Background technique [0002] Since the aluminum alloy contains magnesium, the strength is improved. As a result, weight reduction and thinning of products are achieved. However, in the conventional non-corrosive brazing method, fluorine in the flux reacts with magnesium in the aluminum alloy to form a high melting point compound such as magnesium fluoride (MgF2) on the aluminum surface. It is considered that this reaction reduces the effect of removing the oxide film possessed by the flux, and further hinders the wetting and spreading of the solder, thereby reducing the solderability. [0003] In the method of providing a diffusion barrier layer, since it is necessary to make the barrier layer thicker than the diffusion distance of magnesium during brazing heating, the brazing shee...

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): B23K1/19
CPCB23K1/19B23K1/203B23K35/3605B23K2103/10
Inventor 吴雅萍
Owner 吴雅萍
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com