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Silver brazing flux and preparation method thereof

A technology for silver brazing and silver ingots is applied in the field of silver brazing material and its preparation, which can solve problems such as high cost, and achieve the effects of low cost, low cost and high production efficiency.

Inactive Publication Date: 2016-10-12
SUQIAN POWER SUPPLY COMPANY OF JIANGSU PROVINCE POWER +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide silver brazing material and its preparation method in view of the above disadvantages, and solve the high cost problem existing in the prior art that eutectic silver copper is used as solder material for electric vacuum devices, solar equipment, electronic components, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing silver brazing material, comprising the steps of:

[0023] 1. Put the silver ingot with a proportion of 41% by weight into a vacuum melting furnace. Under vacuum conditions, the heating temperature is 1000-1100 degrees, and the silver ingot is melted to obtain a silver melt. The purity of silver ingots is above 99.9%;

[0024] 2. Put the copper ingots with a weight percentage ratio of 31% and the weight percentage ratio of 28% zinc ingots into the vacuum furnace according to the ratio. Under vacuum conditions, the heating temperature is 1100-1300 degrees to melt the copper ingots and zinc ingots , obtain copper-zinc alloy molten liquid, after degassing, cast into copper-zinc alloy ingot for standby; The purity of described copper ingot is more than 99.9%; The purity of described zinc ingot is more than 99.9%;

[0025] 3. Put the above-prepared silver ingots and copper-zinc alloy ingots into a vacuum furnace. Under vacuum conditions, the heating t...

Embodiment 2

[0029] A method for preparing silver brazing material, comprising the steps of:

[0030] 1. Put the silver ingot with a distribution ratio of 47% by weight into a vacuum melting furnace. Under vacuum conditions, the heating temperature is 1000-1100 degrees, and the silver ingot is melted to obtain a silver melt. The purity of silver ingots is above 99.9%;

[0031] 2. Put copper ingots with a weight percentage of 29% and nickel ingots with a weight percentage of 24% into a vacuum furnace according to the ratio. Under vacuum conditions, the heating temperature is 1100-1300 degrees to melt the copper and zinc ingots , obtain copper-zinc alloy molten liquid, after degassing, cast into copper-zinc alloy ingot for standby; The purity of described copper ingot is more than 99.9%; The purity of described zinc ingot is more than 99.9%;

[0032] 3. Put the silver ingots and copper-zinc alloy ingots prepared above into a vacuum furnace. Under vacuum conditions, the heating temperature i...

Embodiment 3

[0036] A method for preparing silver brazing material, comprising the steps of:

[0037] 1. Put the silver ingot with a proportion of 44% by weight into a vacuum melting furnace. Under vacuum conditions, the heating temperature is 1000-1100 degrees, and the silver ingot is melted to obtain a silver melt. The purity of silver ingots is above 99.9%;

[0038] 2. Put the copper ingots with a weight percentage ratio of 30% and the weight percentage ratio of 26% zinc ingots into the vacuum furnace according to the ratio. Under vacuum conditions, the heating temperature is 1100-1300 degrees to melt the copper ingots and zinc ingots , obtain copper-zinc alloy molten liquid, after degassing, cast into copper-zinc alloy ingot for standby; The purity of described copper ingot is more than 99.9%; The purity of described zinc ingot is more than 99.9%;

[0039] 3. Put the silver ingots and copper-zinc alloy ingots prepared above into a vacuum furnace. Under vacuum conditions, the heating t...

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Abstract

The invention relates to a silver brazing flux and a preparation method thereof, in particular to a silver brazing flux applicable to vacuum electronic devices, solar equipment, electronic components, and the like, and a preparation method of the silver brazing flux. The silver brazing flux comprises the following chemical components 41-47wt% of silver, 29-31wt% of copper and 24-28wt% of nickel. The preparation method of the silver brazing flux comprises the following steps that (1) a silver ingot is put in a vacuum melting furnace according to a matching ratio and is heated and molten on a vacuum condition to form silver molten liquid, and after degassing, the silver molten liquid is cast into a silver ingot for use; (2) a copper ingot and a zinc ingot are put in the vacuum melting furnace according to a matching ratio and are heated and molten on the vacuum condition to form copper-zinc alloy molten liquid, and after degassing, the copper-zinc alloy molten liquid is cast into a copper-zinc alloy ingot for use; (3) the prepared silver ingot and the copper-zinc alloy ingot are put in the vacuum melting furnace and are heated and molten on the vacuum condition to form silver-copper-zinc alloy molten liquid, and after degassing, the silver-copper-zinc alloy molten liquid is cast into a silver-copper-zinc alloy ingot for use; and (4) the silver-copper-zinc alloy ingot is rolled to form a band-shaped silver brazing flux or is drawn to form a wire-shaped silver brazing flux.

Description

technical field [0001] The invention relates to a silver brazing material and a preparation method thereof, belonging to the technical field of alloy solders, in particular to a silver brazing material suitable for electric vacuum devices, solar equipment, electronic components and the like and a preparation method thereof. Background technique [0002] At present, in the welding of various components such as electric vacuum devices, solar equipment, and electronic components, most of them use eutectic silver-copper as solder. Eutectic silver copper (AgCu28), the solder has low resistivity, excellent thermal conductivity and vacuum sealing performance, and is used in the production of anodes in electric vacuum devices such as magnetrons, traveling wave tubes, high-power emission tubes, and X-ray tubes. Brazing materials for components such as antennas, blades, and exhaust pipes can produce excellent electrical conductivity, thermal conductivity, and processability. The elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/3006
Inventor 陈科苑超山王洪寅戢李刚车玉兰张爱琪贾敏姚士贵徐晓明
Owner SUQIAN POWER SUPPLY COMPANY OF JIANGSU PROVINCE POWER