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Aluminum welding powder and preparation method thereof

A technology for aluminum welding and aluminum powder, applied in the field of aluminum welding powder and its preparation, can solve the problems of easy occurrence of tin beads, leakage or short circuit of components, unsatisfactory anti-oxidation effect, etc., and achieve stable oxidation resistance and corrosion resistance, The effect of stabilizing adhesion

Inactive Publication Date: 2018-03-13
广西塔锡科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing solder powders are tin-based alloy solder powders, the anti-oxidation effect is not ideal, and the solder powder with high oxygen content can cause the viscosity of the solder paste to be unstable, and tin beads are prone to appear during welding, resulting in leakage or short circuit between components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of aluminum welding powder of the present embodiment, comprises the raw material of following weight part: 20 parts of barite, 2 parts of silicon dioxide, 4 parts of copper oxide, 4 parts of vanadium pentoxide, 2 parts of lithium sulfate, 2 parts of calcium fluoride , 1 part of sodium nitrate, 50 parts of aluminum powder.

[0018] The aluminum solder powder of this embodiment has stable oxidation resistance, corrosion resistance and adhesiveness without collapse.

[0019] The mesh number of the aluminum powder in this embodiment is 200 mesh.

[0020] The content of barium sulfate in the barite of this embodiment is higher than 95%, and the content of silicon oxide is less than 2%.

[0021] The preparation method of aluminum welding powder of the present embodiment comprises the following steps:

[0022] (1) Take the above-mentioned raw materials by weight and put them into a ball mill, add steel balls with a diameter of 30mm according to the ball-to-material ra...

Embodiment 2

[0027] A kind of aluminum welding powder of the present embodiment, comprises the raw material of following weight part: 28 parts of barite, 3 parts of silicon dioxide, 7 parts of copper oxide, 7 parts of vanadium pentoxide, 3 parts of lithium sulfate, 4 parts of calcium fluoride , 3 parts of sodium nitrate, 60 parts of aluminum powder.

[0028] The aluminum solder powder of this embodiment has stable oxidation resistance, corrosion resistance and adhesiveness without collapse.

[0029] The mesh number of the aluminum powder in this embodiment is 250 mesh.

[0030] The content of barium sulfate in the barite of this embodiment is higher than 95%, and the content of silicon oxide is less than 2%.

[0031] The preparation method of aluminum welding powder of the present embodiment comprises the following steps:

[0032] (1) Take the above-mentioned raw materials by weight and put them into a ball mill, add steel balls with a diameter of 30mm according to the ball-to-material r...

Embodiment 3

[0037] A kind of aluminum welding powder of the present embodiment, comprises the raw material of following weight part: 35 parts of barite, 5 parts of silicon dioxide, 10 parts of copper oxide, 10 parts of vanadium pentoxide, 5 parts of lithium sulfate, 6 parts of calcium fluoride , 5 parts of sodium nitrate, 70 parts of aluminum powder.

[0038] The aluminum solder powder of this embodiment has stable oxidation resistance, corrosion resistance and adhesiveness without collapse.

[0039] The aluminum powder in this embodiment has a mesh number of 300 mesh.

[0040] The content of barium sulfate in the barite of this embodiment is higher than 95%, and the content of silicon oxide is less than 2%.

[0041] The preparation method of aluminum welding powder of the present embodiment comprises the following steps:

[0042] (1) Take the above-mentioned raw materials by weight and put them into a ball mill, add steel balls with a diameter of 30mm according to the ball-to-material ...

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Abstract

The invention relates to aluminum welding powder and a preparation method thereof. The aluminum welding powder comprises the following raw materials of, by weight, 20-35 parts of barite, 2-5 parts ofsilicon dioxide, 4-10 parts of copper oxide, 4-10 parts of vanadium oxide, 2-5 parts of lithium sulfate, 2-6 parts of calcium fluoride, 1-5 parts of sodium nitrate and 50-70 parts of aluminum powder.The aluminum welding powder has stable oxidation resistance, corrosion resistance and adhesiveness and is free of collapse.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to an aluminum welding powder and a preparation method thereof. Background technique [0002] Solder powder is mainly obtained by pulverizing solder alloys, and the general processing methods are chemical reduction, electrolytic deposition, mechanical pulverization, and atomization powder production. Although there are many powder preparation methods, from the essence of the process, the existing powder making methods are generally divided into mechanical methods and physical and chemical methods. Most of the existing solder powders are tin-based alloy solder powders, which have unsatisfactory anti-oxidation effects, and solder powders with high oxygen content can cause the viscosity of the solder paste to be unstable, and solder beads are prone to appear during soldering, resulting in leakage or short circuits between components. Contents of the invention [0003] The tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/286B23K35/40
Inventor 徐庆富
Owner 广西塔锡科技有限公司
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