Unlock instant, AI-driven research and patent intelligence for your innovation.

Soldering flux for welding magnalium alloy

A magnesium-aluminum alloy and flux technology, which is used in welding media, welding equipment, welding/cutting media/materials, etc., and can solve the problems that affect the brazing effect, the solder cannot be liquidized well, and the flux cannot reach the optimum level. effect and other issues, to achieve the effect of smooth welding surface

Inactive Publication Date: 2013-02-13
虞海香
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in actual production, the brazing flux prepared by using this ratio cannot achieve the best effect in the brazing of magnesium-containing aluminum alloys.
Through analysis, it was found that ALF 3 : CsF=42.0:58.0 (molar ratio), the proportion of flux with a melting temperature of 471°C is mainly for pure aluminum structures or magnesium-free or low-magnesium aluminum alloys, because this ratio of flux is suitable for magnesium-containing aluminum alloys It has a special activity, but for aluminum alloys with high magnesium content, the magnesium will form magnesium fluoride with a high melting point with the fluorine in the flux, resulting in poor liquid phase of the solder, and Affect the effect of brazing

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

[0011] The technical solutions of the present invention are described below through specific embodiments, and the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention.

[0012] A flux for welding magnesium-containing aluminum alloy, its composition includes ALF 3 -CsF series flux, zinc fluoride and tin fluoride; of which ALF 3 :CsF (molar ratio)=42.5:47.5 or 41.5:48.5; the mass percentage of each composition is 97.5-99.5% ALF 3 -CsF, 0.2-2.0% zinc fluoride, 0.1-0.5% tin fluoride.

[0013] The mass ratio of zinc fluoride to tin fluoride is 3:1.

[0014] The manufacturing process of this technical solution is the same as the prior art, and no detailed description is given.

[0015] The solder to be matched with it still uses a common solder with a ratio of zinc to aluminum of 80:20.

[0016] The above embodiments illustrate the technical solutions of the present invention, and those skilled in the art should understand t...

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 soldering flux for welding magnalium alloy. The soldering flux is composed of the following components by mass: 97.5-99.5% of ALF3-CsF series soldering flux, 0.2-2.0% of zinc fluoride and 0.1-0.5% of stannic fluoride, wherein the molar ratio of ALF3 to CsF is 42.5: 47.5 or 41.5: 48.5.

Description

Technical field [0001] The invention belongs to the field of welding materials, and particularly refers to a brazing material for welding aluminum and aluminum alloy brazing. Background technique [0002] Because a stable aluminum oxide film is formed on the surface of aluminum and aluminum alloys, brazing is difficult. At present, there is a lot of attention on the flux of aluminum and aluminum alloy brazing at home and abroad. ALF now recognized 3 -The crystal phase diagram of CsF system flux is considered to guide the principle diagram of aluminum and aluminum alloy fluxes, and ALF is listed in the crystal phase diagram 3 :CsF=42.0:58.0 (molar ratio), the melting temperature is 471℃, which is considered the best choice. Therefore, the current fluxes in aluminum and aluminum alloy fluxes use this ratio. [0003] For example, the Chinese patent application No. CN200710029683 discloses a flux for welding aluminum and aluminum alloys. The technical solution disclosed in this appli...

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): B23K35/362
Inventor 虞海香
Owner 虞海香