Tungsten wire is the raw material for making light source materials, high temperature heaters and high temperature resistant components. The traditional production method of tungsten wire is to prepare doped tungsten oxide by adding silicon, aluminium, potassium and other elements into tungsten oxide. The doped tungsten oxide is reduced twice or once by hydrogen at 500-950 ℃, and then doped tungsten powder is obtained by hydrochloric acid, hydrofluoric acid pickling (or not pickling). The doped tungsten powder is pressed by steel mould or isostatic pressing. The doped tungsten bars were obtained by vertical sintering after moulding, and the doped tungsten bars were manufactured by rotary forging and wire drawing.

In recent years, lead-containing materials are being gradually eliminated due to their high pollution, high toxicity, low strength and low efficiency. It is hoped that high-energy polymer composites with good processability will be developed to expand the application of metal materials.

With the continuous consumption of petroleum resources, the environment for oil exploitation is getting worse and worse, and the requirements for corrosion resistance and friction resistance of petroleum equipment are getting higher and higher. At present, the phenomenon of eccentric wear and corrosion is serious in the field of petroleum machinery. No satisfactory surface treatment technology can be applied to the surface treatment of petroleum machinery, which can simultaneously possess anti-corrosion, wear resistance and low cost.

As a traditional material, nickel-tungsten alloy has attracted much attention because of its many superior properties and some potential applications. Tungsten-nickel alloy electroplating has compact structure, high heat resistance, comparable to ceramics, wear resistance and oxidation resistance at high temperature, and good self-lubrication and corrosion resistance.