Colored brushes are made of copper, lead, tin, graphite and other powders, mixed with phenolic resin as binder, and processed by hot pressing. However, since they are produced by mixing metal and non-metal powders, the phenomenon of powder segregation is more serious. Brushes have poor performance uniformity, short service life, poor commutation ability, low operating temperature, low application height, and shortcomings of moisture, mildew, and salt spray "three prevention" capabilities.
The production process of black aviation brushes is completely different from non-ferrous aviation brushes. It uses non-metal powders (ie carbon materials) such as coke, carbon black, graphite, etc. and undergoes processes such as roller, grinding, pressing, roasting, dipping, graphitization , First made into semi-finished products, and then take some auxiliary measures to meet the high-altitude performance requirements of aviation motors.
Even the most wear-resistant brushes under normal temperature and pressure, once they work in the high-altitude conditions of lack of water and oxygen, once the brushes are worn out in tens of minutes or even a few minutes, it will wear out. This is because ordinary brushes are Under high-altitude conditions, a lubricating film cannot be formed, and sharp dusty wear occurs.
The new type of brush is made of ordinary copper graphite brushes by adding lead powder and tin powder. The lead and tin in the brush can form a tin-lead solid melt at a lower temperature and penetrate into the rectifier during motor operation. The sub-surface layer forms a solid melt protective film, so that the brush can work normally without water vapor and air. This is the high-altitude lubrication mechanism of the earliest colored aviation brushes.
UK Recessed Tabletop Socket be with Britain type plug,could be selected to be with USB ports,Internet ports,Phone ports,overload protection and with or without switch.
UK Recessed Tabletop Socket can be set into furniture and office furniture like table,cabinet and so on.It will be easily to use the charging for Phone and home appliance.
Specifically, We have our own design and production team for USB Circuit Board design and produce.
UK Recessed Tabletop Socket
Switch Port,UK Recessed Tabletop Socket,UK HidDEn Mounted Power Outlets,UK Flush Mount Socket
Dongguan baiyou electronic co.,ltd , https://www.dgbaiyou.com