The production of pure tungsten wire involves several key steps. Here's a simplified overview of the process:

Raw material selection: The process begins with selecting high-purity metal tungsten, which is usually obtained by removing impurities through a series of chemical and metallurgical refining processes. Powder preparation: Purified tungsten is converted into powder form by methods such as hydrogen reduction or other powder metallurgy techniques. Wire drawing: Tungsten powder is compacted and sintered to form a solid blank, which is then hot or cold drawn into the required wire diameter. Heat Treatment: Drawn tungsten wire undergoes a heat treatment process to improve its mechanical properties and eliminate any residual stress. Surface Preparation: Surface cleaning and treatment procedures are performed to remove oxides and impurities, ensuring high purity and optimal surface properties. Final Inspection: Finished tungsten wire undergoes strict quality control measures to evaluate dimensional accuracy, purity and mechanical properties.

Overall, pure tungsten wire production methods require strict adherence to quality standards and precision machining techniques to achieve the required high-temperature performance and reliability.