Influence of technology rotary forging and drawing on structure and properties of tungsten wires

摘要

Thin tungsten wires are thanks to their mechanical and physical properties still in the focus from the viewpoint of production of high-temperature structural materials used for example in lighting engineering. The input semi-products for production of thin tungsten wires are obtained by powder metallurgy. Mechanical properties of thin tungsten wires depend significantly on purity of the input raw materials (powders) and their processing, as well as on thermo-mechanical conditions for forming, in this case specifically on forging and drawing. In this connection special attention must be paid to forming parameters and to their optimisation aimed at achievement of the reauired mechanical properties of produced wires.