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Brazing material and preparing method thereof

A technology of brazing materials and flux paste, applied in the direction of welding/cutting media/materials, welding equipment, welding media, etc., can solve problems such as difficult connection, stable chemical properties, and lower brazing temperature

Inactive Publication Date: 2016-08-24
GUANGDONG REAL FAITH LIGHTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a kind of brazing material, which can realize the connection of materials such as metal aluminum alloy composite material / composite ceramics and / or glass, as a kind of lead-free brazing material than existing Some brazing materials have a low melting point, which reduces the brazing temperature and solves the technical difficulties that such materials are difficult to connect due to their stable chemical properties

Method used

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  • Brazing material and preparing method thereof

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Effect test

Embodiment 1

[0032] Brazing materials include the following materials:

[0033] 80 parts by weight of metal alloy powder and 20 parts by weight of solder paste;

[0034] Wherein the metal alloy powder consists of the following materials: 1 part by weight of metal bismuth Bi, 1 part by weight of metal silver Ag and 98 parts by weight of metal tin Sn;

[0035] The purity of the above-mentioned metal bismuth is 99.99%;

[0036] The purity of the above-mentioned metallic silver is 99.99%;

[0037] The purity of the above-mentioned metallic tin is 99.99%;

[0038] The parts by weight of each material in the soldering paste are: 4.8 parts by weight of polymerized rosin, 4.8 parts by weight of polydimethylsiloxane, 9.6 parts by weight of tetraethoxysilane, 0.95 parts by weight of triethanolamine, and 0.48 parts by weight of phytic acid, SiO24.37 parts by weight.

[0039] Method of preparing brazing material:

[0040] Step 1, preparation of Sn-Bi alloy intermediate

[0041] Weigh 2 parts by ...

Embodiment 2

[0052] Brazing materials include the following materials:

[0053] 90 parts by weight of metal alloy powder, 10 parts by weight of solder paste;

[0054] Wherein the metal alloy powder consists of the following materials: 20 parts by weight of Bi, 0.1 parts by weight of Ag and Sn79.9 of parts by weight;

[0055] The purity of the above-mentioned metal bismuth is 99.99%;

[0056] The purity of the above-mentioned metallic silver is 99.99%;

[0057] The purity of the above-mentioned metallic tin is 99.99%;

[0058] The parts by weight of the materials in the soldering paste are: 3.85 parts by weight of polymerized rosin, 3.85 parts by weight of phenylmethylsiloxane homopolymer, 0.38 parts by weight of triethanolamine, and 1.92 parts by weight of Al2O3.

[0059] Method for preparing brazing material:

[0060] Step 1, preparation of Sn-Bi alloy intermediate

[0061] Sn and Bi weigh 30 parts by weight of Sn and 20 parts by weight of Bi according to the weight ratio of 1.5:1, a...

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Abstract

A brazing material comprises 80-90 parts by weight of metallic alloy powder and 10-20 parts by weight of a soldering paste, wherein the metallic alloy powder comprises the following materials: 1-20 parts by weight of Bi, 0.1-1 part by weight of Ag and 79-99 parts by weight of Sn; and the soldering paste consists of one or a plurality of rosin and a derivative thereof, tetraethoxysilane, a surfactant, an antioxidant and an inorganic filler. The brazing material can connect materials, such as metallic aluminum alloy composites, composite ceramic and glass, is lower in melting point as a lead-free brazing material in comparison with the existing brazing material, lowers brazing temperature, and at the same time, solves the technical problem that the class of materials are difficult to connect due to respective stable chemical properties.

Description

technical field [0001] The invention belongs to the field of brazing, and in particular relates to a brazing material and a preparation method thereof. Background technique [0002] Brazing is to use a metal material with a lower melting point than the base metal as the solder, heat the weldment and the solder to a temperature higher than the melting point of the solder and lower than the melting temperature of the base metal, use liquid solder to wet the base metal, fill the gap between the joints and The method of interdiffusion with the base metal to realize the connection of the weldment. The brazing deformation is small, and the joint is smooth and beautiful. It is suitable for welding precision, complex and components composed of different materials, such as honeycomb structure plates, turbine blades, hard alloy tools and printed circuit boards. [0003] The brazing of inorganic non-metallic materials such as glass ceramics is different from the brazing between tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/362
CPCB23K35/3006B23K35/3613B23K35/362B23K2103/18
Inventor 程康丁天昊丁萍
Owner GUANGDONG REAL FAITH LIGHTING TECH
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