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Lead-free environment-friendly tin wire suitable for aluminum soft brazing and preparation method thereof

A technology of solder wire and aluminum solder, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of substrate corrosion and high energy consumption

Inactive Publication Date: 2017-05-10
广东中实金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary aluminum brazing temperature is above 600°C, which consumes a lot of energy. The flux used is mainly metal salt, and the welding residue will corrode the substrate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh a certain amount of ethylenediamine and aminoethylethanolamine respectively, add succinic acid to ethylenediamine until the solution pH=7, slowly add salicylic acid to aminoethylethanolamine until the solution pH=7 7;

[0029] (2) Weigh 300g of the above-mentioned ethylenediamine succinic acid solution into a beaker, then weigh 300g of the aminoethylethanolamine salicylic acid solution into the beaker, heat the mixed solution to 140°C, add 80g of zinc fluoride, and stir. Until the zinc fluoride is completely dissolved;

[0030] (3) Weigh 20g of benzotriazole and 300g of gum rosin into a beaker, stir until the chemicals are completely dissolved, and the flux is cooked;

[0031] (4) Add the boiled flux into the rosin barrel of the hydraulic press, add lead-free solder, and go through hydraulic pressure, rolling, wire drawing, and winding to obtain the lead-free environmentally friendly solder wire required by the present invention.

Embodiment 2

[0033] (1) Weigh a certain amount of triethylenetetramine and diethanolamine, slowly add fluoboric acid to triethylenetetramine until the solution pH=7, slowly add stearic acid to diethanolamine until the solution pH=7;

[0034] (2) Weigh 460g of the above-mentioned triethylenetetraamine fluoroboric acid solution and pour it into a beaker, then weigh 230g of the diethanolamine stearic acid solution and add it to the beaker, heat the mixed solution to 1350°C, add 90g of zinc fluoroborate, and stir until the fluorine Zinc borate is completely dissolved;

[0035] (3) Weigh 20g of benzotriazole and 200g of hydrogenated rosin into a beaker, stir until the chemicals are completely dissolved, and the flux is cooked;

[0036] (4) Add the boiled flux into the rosin barrel of the hydraulic press, add lead-free solder, and go through hydraulic pressure, rolling, wire drawing, and winding to obtain the lead-free environmentally friendly solder wire required by the present invention.

Embodiment 3

[0038] (1) Weigh a certain amount of aminoethylethanolamine, slowly add fluoboric acid to aminoethylethanolamine until the solution pH=7;

[0039] (2) Weigh 800g of the above-mentioned aminoethylethanolamine fluoroboric acid solution into a beaker, heat the solution to 130°C, add 80g of zinc oxide, and stir until the zinc oxide is completely dissolved;

[0040] (3) Weigh 20g of benzotriazole and 100g of hydrogenated rosin into a beaker, stir until all the chemicals are dissolved, and the flux is cooked;

[0041] (4) Add the boiled flux into the rosin barrel of the hydraulic press, add lead-free solder, and go through hydraulic pressure, rolling, wire drawing, and winding to obtain the lead-free environmentally friendly solder wire required by the present invention.

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PUM

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Abstract

The invention discloses a lead-free environment-friendly tin wire suitable for aluminum soft brazing. The tin wire comprises the following raw materials in percentage of 100% by mass: 96.5-98.5% of lead-free solder, and 1.5-3.5% of flux. An aluminum substrate material can be quickly welded; the welding temperature is 380-420 DEG C; and the tin wire is suitable for manual soldering iron welding, flame spray welding and the like, largely reduces the energy consumption, saves the cost, and protects the environment. The flux used in the tin wire adopts main components of organic matters, so that the requirements of the aluminum substrate on the welding performance can be satisfied, meanwhile, few residues after welding can be guaranteed, and the substrate is basically not corroded. The invention further discloses a preparation method of the lead-free environment-friendly tin wire suitable for aluminum soft brazing.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a lead-free environment-friendly solder wire suitable for aluminum soldering and a preparation method thereof. Background technique [0002] In recent years, energy saving and environmental protection have become the common pursuit of everyone, and the same is true for the welding field. The base material of traditional welding is mainly copper, but with the sharp rise in the price of copper materials, and people's increasing pursuit of light weight and portability of products, aluminum and aluminum alloys have entered the field of vision of material people. [0003] Aluminum and aluminum alloys have some incomparable advantages over copper materials. First of all, the content of aluminum in the earth's crust is much higher than that of copper, and the extraction method is simple and easy, so the price of aluminum metal in the market is much lower than that of copper. Secondly...

Claims

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Application Information

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IPC IPC(8): B23K35/24B23K35/363B23K35/40
CPCB23K35/24B23K35/3612B23K35/362B23K35/40
Inventor 方翰楷范欢方翰宽方喜波梁静珊
Owner 广东中实金属有限公司