Electric brush for motor of electric tool and preparation method for electric brush
A technology for electric tools and electric brushes, which is applied in the manufacture of brushes, circuits, and current collectors. It can solve problems such as mechanical sparks, poor performance of brushes, and increased wear of brushes, and achieve excellent machining performance and anti-interference. Strong, spark suppression effect
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[0051] Example 1
[0052] 1. Prepare materials according to the following weight ratio (kg):
[0053]
[0054] Among them, graphite includes natural graphite and artificial graphite, the weight ratio of natural graphite and artificial graphite is 50:25; the lubricant includes tungsten disulfide and aluminum phosphate, and the weight ratio of tungsten disulfide to aluminum phosphate is 0.2:0.4;
[0055] 2) Put the raw material graphite, lubricant, zinc stearate, aluminum oxide, and paraffin in the kneading pot, turn on the heating device of the kneading pot, heat up to 160℃, and mix for 40 minutes at 160℃. Add all the asphalt, continue to mix evenly, stop heating after mixing for 1 hour, wait until the material is cooled to ≤40°C to prepare a premix;
[0056] 3) Place the premix in a mill (Shanghai Zhuoya Mining Machinery Co., Ltd.) for pulverization. After pulverizing for 3 hours, the pulverized material is passed through an 80-mesh sieve to obtain the premix powder. 80 mesh;
[0057]...
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[0061] Example 2
[0062] 1. Prepare materials according to the following weight ratio (kg):
[0063]
[0064]
[0065] Among them, graphite includes natural graphite and artificial graphite, the weight ratio of natural graphite to artificial graphite is 20:40; the lubricant includes tungsten disulfide and aluminum phosphate, and the weight ratio of tungsten disulfide to aluminum phosphate is 0.2:0.2;
[0066] 2) Put the raw material graphite, lubricant, zinc stearate, aluminum oxide, and paraffin in the kneading pot, turn on the heating device of the kneading pot, heat up to 150℃, and mix at 150℃ for 60 minutes. Add all the asphalt, continue to mix evenly, stop heating after mixing for 1 hour, wait until the material is cooled to ≤40°C to prepare a premix;
[0067] 3) Place the premix in a mill for pulverization. After 3 hours of pulverization, the pulverized material is passed through an 80-mesh sieve to obtain a premix powder. The particle size of the premix powder is ≤80 mesh;
[0...
Example Embodiment
[0072] Example 3
[0073] 1. Prepare materials according to the following weight ratio (kg):
[0074]
[0075] Among them, graphite includes natural graphite and artificial graphite, the weight ratio of natural graphite and artificial graphite is 20:50; the lubricant includes tungsten disulfide and aluminum phosphate, and the weight ratio of tungsten disulfide to aluminum phosphate is 0.2:0.4;
[0076] 2) Put the raw material graphite, lubricant, zinc stearate, aluminum oxide, and paraffin in the kneading pot, turn on the heating device of the kneading pot, heat it to 170°C, and mix for 40 minutes at 170°C. Add all the asphalt, continue to mix evenly, stop heating after 1.5h of mixing, and wait until the material is cooled to ≤40°C to prepare a premix;
[0077] 3) Place the premix in a mill for pulverization. After pulverizing for 3 hours, the pulverized material is passed through an 80-mesh sieve to obtain premix powder. The particle size of the premix powder is ≤80 mesh;
[0078] 4) ...
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