Aluminum and silicon-based brazing filler metal

A brazing material, aluminum-silicon technology, applied in welding/cutting medium/material, welding medium, metal processing equipment, etc., can solve the problem of aluminum alloy brazing and other problems, and achieve high cost performance, good performance and low melting temperature. Effect

Inactive Publication Date: 2014-05-14
SHINAN BRANCH OF QINGDAO BLUEPRINT CULTURE COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the liquidus of this type of brazing filler metal is about 577°C, which is close to the solidus line of most

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0006] The present invention will be further explained below in conjunction with examples:

[0007] An aluminum-silicon-based solder, characterized in that, in terms of weight percentage (unit: wt%), each combination of the solder is: Si3.5, Cu20, Zn25, Mn0.3, and the balance is Al; The melting temperature is 480~500℃, which is a high-temperature brazing filler metal for aluminum brazing; the Si can reduce the melting point of Al and increase the strength of the weld, and because Si can be modified, the weld has good toughness. The bending performance is strong; the Cu can reduce the melting point of Al, improve the fluidity of the solder, and Cu can form a solid solution with Al, so that the alloy can be solid solution strengthened, and the strength of the weld is improved; the Zn will be in the grain The edge of Mn forms Al-Zn solid solution to form a solid solution bond between the brazing filler metal and the base metal, thereby improving the ability of the brazing filler met...

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PUM

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Abstract

The invention relates to brazing filler metal, in particular to aluminum and silicon-based brazing filler metal. The aluminum and silicon-based brazing filler metal comprises Al, Si, Cu, Zn and Mn. The aluminum and silicon-based brazing filler metal has the advantages of low melting temperature, excellent wettability, flowability, plating property, machinability and performance, low manufacturing cost, high welded joint strength, corrosion resistance and cost performance and good toughness.

Description

technical field [0001] The invention relates to a brazing solder, especially an aluminum-silicon-based solder. Background technique [0002] Al-Si series solder has excellent brazing properties, color consistency with the base metal, coating and corrosion resistance, especially this series of solder can be modified, which greatly increases the solderability of the solder and the weld. Toughness and bending properties, combined with low cost, make it widely used. However, the liquidus of this series of brazing filler metals is about 577°C, which is close to the solidus of most aluminum alloys, and it cannot be brazed to aluminum alloys whose overburning temperature is lower than about 610°C. Contents of the invention [0003] The present invention aims to solve the above problems, and provides an aluminum-silicon-based solder, which adds copper, zinc and manganese elements on the basis of a simple aluminum-silicon-based solder, overcomes the high melting temperature of ord...

Claims

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Application Information

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IPC IPC(8): B23K35/28
CPCB23K35/288
Inventor 郇文杰田海红王秀珍
Owner SHINAN BRANCH OF QINGDAO BLUEPRINT CULTURE COMM
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