Ball Valves of Polycrystalline Silicon
With the vigorous development of the photovoltaic industry and the lithium battery industry, polysilicon as a very important raw material, its demand is also greatly increased.
What are the properties of polysilicon?
1. High purity: The purity of polysilicon is very high and almost contains no impurities. This high purity is one of the reasons why polysilicon is widely used in the semiconductor industry, as impurities can affect the performance of semiconductor devices.
2. High hardness: The hardness of polysilicon is very high, about 7.0. This makes polysilicon have good wear resistance and scratch resistance, and is often used to make hard coatings and scratch resistant materials.
3.Low thermal expansion coefficient: the thermal expansion coefficient of polysilicon is low, so in high temperature environment, polysilicon material is relatively stable, not easy to occur dimensional deformation and thermal stress.
4. High electrical conductivity: polysilicon has high electrical conductivity and can be used as a conductive material in electronic devices. In addition, polysilicon also has a high light conductivity, which is suitable for the production of optoelectronic devices.
5. High temperature resistance: polysilicon has high temperature resistance and can remain stable for a long time in a high temperature environment without melting or deformation. This makes polysilicon widely used in high temperature processes and high temperature equipment.
6. Biocompatibility: polysilicon has excellent biocompatibility with biological tissues and body fluids, and can be used in biomedical fields, such as biosensors and implantable medical devices.
In the process of producing lithium batteries, polysilicon is in powder form, and because of its high hardness, the processed pipeline equipment usually uses hard sealed ball valves. It is also known as metal to metal seated ball valve. In order to prevent polysilicon powder from sticking to the surface of the ball and causing the ball and seat to jam, our metal seat acts as a scraper to effectively scrape the polysilicon powder attached to the surface of the ball, which is designed to extend the service life of the ball valve.
