Why ion fan to use tungsten needle?
Tungsten needle, as the name implies, is a product of transition metal tungsten. With its excellent physical and chemical properties, it has become one of the most popular discharge needles in modern times.
Discharge needle is one of the most important parts in ion fan. In addition to the pollution after a long time of work will affect the fan in addition to the electrostatic effect and ion balance, its quality will also directly affect the fan in addition to the electrical performance. At present, the widely used discharge needles are stainless steel needles and tungsten products. Compared with tungsten discharge needle, stainless steel needle has the advantage of low price, but its wear resistance, oxidation resistance and corrosion resistance are far less than tungsten discharge needle.
The working environment of discharge needle is relatively bad. Under normal circumstances, it should be applied 4kV or higher voltage (2-3kV HF AC mode), so the tip of the discharge needle needs to bear a very large energy load, which is the main reason for the product is easy to damage, short service life.
In view of the above problems, now the manufacturer is more willing to choose inorganic metal tungsten as the discharge needle of the ion fan. Tungsten is a kind of refractory metal, melting point between 3390°C and 3430°C, and the needle products made by it not only have good high temperature resistance, wear resistance and chemical stability, but also excellent electrical conductivity, higher strength, greater hardness, no radioactivity and friendly to the ecological environment, etc..
Therefore, compared with the stainless steel needle, the tungsten needle is more suitable for the discharge needle, which can ensure a longer service life, but also make the relevant fan in addition to the electrostatic effect is better, and effectively improve the work efficiency. It is worth mentioning that the production of electroacupuncture materials and metal germanium, nickel, titanium and other materials.
